JP2018183454A - Voltage application apparatus - Google Patents

Abstract

Kind Code: A1 A voltage application device for applying a voltage from an electrode to a human body is capable of sensing a deterioration in the insulation property of an insulating portion that insulates a lead connected to the electrode from the outside and improving noise resistance. to provide Kind Code: A1 In a voltage application device, an application electrode outputs an application voltage to be applied to a human body. The control section 40 is housed in the body section 10 , and the power supply section 20 is housed in the body section 10 and connected to the control section 40 . The lead portions 38 and 39 electrically connect the application electrode 30 and the control portion 40 . The sensing electrode 80 is connected to the ground terminal 40 a of the control section 40 . The insulating part 70 covers the lead parts 38, 39 and the sensing electrode 80 to insulate the lead parts 38, 39 and the sensing electrode 80 from the outside. The control unit 40 senses that the sensing electrode 80 and at least one of the human body 2 and the application electrode 30 are energized, and senses that the insulating property of the insulating unit 70 is lowered. [Selection drawing] Fig. 8

Description

  The present invention relates to a voltage application device.

  Conventionally, muscle contraction is promoted by applying voltage to the human body and applying electrical stimulation to the muscle, or obtaining body fat percentage, heart rate, etc. from the electrical resistance value obtained by applying voltage to the human body. Yes. For example, it is used for the purpose of muscle strengthening in the medical and sports fields. Specifically, a muscle stimulation method is used in which electricity is applied through an electrode attached to a human body, and the muscle is tensioned and relaxed based on an electrical signal.

  In Patent Document 1, as a voltage application device for stimulating muscles using an electric signal, a power source is incorporated in a main body portion having an operation portion, and a sheet-like base material extended from the main body portion. There are disclosed a plurality of electrodes, which are configured to apply an electrical pulse to a human body to give muscle stimulation by attaching the electrodes to the human body. Each electrode is connected to a power source via a lead portion, and a gel-like pad having adhesiveness and conductivity is attached. The electrode and the main body are attached to the human body using the adhesiveness of the pad, and the electrode and the human body can be energized using the conductivity of the pad.

JP, 2006-202796, A

  In the voltage application device disclosed in Patent Document 1, an insulating part is formed on the lead part by a coating made of an insulating material, and the lead part is insulated from the outside. As a result, no direct current flows between the lead portion and the skin surface. However, if the insulation part deteriorates with long-term use, or if the insulation of the insulation part decreases due to impact from the outside, the insulation of the lead part decreases and the insulation part There is a possibility that a current flows directly between the lead portion and the skin surface through the portion where the property is lowered. In such a case, excessive irritation occurs on the skin surface in contact with the part where the insulating property is lowered, and the user feels uncomfortable or the desired electrical stimulation cannot be applied to the muscle from the electrode. There is a risk of lowering the experience. In order to avoid such a situation, it is desired to sense that the insulating property of the insulating portion has decreased. However, the configuration of Patent Document 1 does not have a special configuration for detecting a decrease in insulation of the insulating portion. Moreover, in the structure of patent document 1, the main-body part is provided with the control circuit for outputting an electrical pulse, etc., and there exists a possibility of receiving the influence of the electromagnetic noise from the outside.

  The present invention has been made in view of such a background, and in a voltage application device that applies a voltage from an electrode to a human body, senses a decrease in insulation of an insulating part that insulates a lead connected to the electrode from the outside. At the same time, it is an object of the present invention to provide a voltage application device capable of improving noise resistance.

One aspect of the present invention is a voltage applying device that applies a voltage to a human body in order to apply electrical stimulation to the human body or to acquire electrical information of the human body,
The main body,
A control unit housed in the main body,
A power supply unit housed in the main body unit and connected to the control unit;
An application electrode configured to output an applied voltage applied to the human body;
A lead part electrically connecting the application electrode and the control part;
A sensing electrode connected to the ground terminal of the control unit;
An insulating part that covers the lead part and the sensing electrode and insulates the lead part and the sensing electrode from the outside;
With
The control unit is configured to detect that the sensing electrode is energized with at least one of the human body and the application electrode, and sense that the insulating property of the insulating unit is reduced. It is in.

  In the voltage application device, the sensing electrode provided separately from the application electrode for applying the voltage is covered with the insulating portion together with the lead portion. The sensing electrode is connected to the ground terminal of the control unit. Therefore, when the insulating property of the insulating portion is lowered and the sensing electrode is energized with at least one of the human body and the applied electrode, the current output from the applied electrode flows to the ground via the sensing electrode, so the applied voltage at the applied electrode Falls. As a result, the control unit can detect that the sensing electrode is energized with at least one of the human body and the applied electrode, and can sense that the insulating property of the insulating unit has decreased. For this reason, if the insulation of the insulating part that insulates the lead part is lowered, the control part can detect this, so that measures for preventing the user's feeling from being lowered can be taken.

  Furthermore, since the sensing electrode is connected to the ground terminal of the control unit, electromagnetic noise from the outside can be shielded or confined. As a result, the influence of external electromagnetic noise on the control unit or the like can be reduced, and the noise resistance of the voltage application device can be improved. In addition, an improvement in noise characteristics in the voltage application device can be expected.

  As described above, according to the present invention, in the voltage application device in which electrical stimulation is output from the electrode, a decrease in the insulation of the insulating portion that insulates the lead connected to the electrode from the outside is detected and noise resistance is improved. It is possible to provide a voltage applying device capable of performing the above.

1 is a front view of a voltage application device in Embodiment 1. FIG. FIG. 3 is a rear view of the voltage application device according to the first embodiment. FIG. 3 is a side view of the voltage application device according to the first embodiment. (A) is the IVa-IVa line position partial expanded view in FIG. 1, (b) is the IVb-IVb line position partial expanded view in FIG. FIG. 3 is a partially exploded perspective view of the first embodiment. FIG. 4 is a schematic cross-sectional view taken along line IVa-IVa in FIG. 1. The conceptual diagram explaining the normal electricity supply state of the voltage application apparatus in Example 1. FIG. FIG. 8A and FIG. 8B are conceptual diagrams for explaining an energized state when the insulating property of the insulating portion in the voltage application device of Example 1 is lowered. The conceptual diagram explaining the electricity supply state at the time of the insulation fall of the insulation part in the voltage application apparatus of a comparative example. The rear view of the base material in Example 1. FIG. The front view of the insulating sheet in Example 1. FIG. The rear view of the state which removed the 2nd case in Example 1. FIG. FIG. 2 is a schematic diagram illustrating a usage mode of the voltage application device in the first embodiment. 1 is a block diagram illustrating a configuration of a voltage application device in Embodiment 1. FIG. FIG. 3 is a circuit diagram illustrating a part of the circuit configuration of the voltage application device according to the first embodiment. FIG. 3 is a diagram illustrating basic waveforms stored in the voltage application device according to the first embodiment. The figure which shows the burst wave output from the voltage application apparatus in Example 1. FIG. The conceptual diagram which shows the relationship between the pulse signal output from the voltage application apparatus of the normal electricity supply state in Example 1, the voltage value of an applied voltage, and a pressure | voltage rise period. The other conceptual diagram which shows the relationship between the pulse signal output from the voltage application apparatus of the normal electricity supply state in Example 1, the voltage value of applied voltage, and a pressure | voltage rise period. The conceptual diagram which shows the relationship between the pulse signal output from the voltage application apparatus of the energization state at the time of insulation fall in Example 1, and the voltage value of an applied voltage. The flowchart showing the control aspect for detecting the insulation fall in Example 1. FIG. The flowchart showing the control aspect for detecting the insulation fall in Example 1. FIG. The front view of the voltage application apparatus in Example 2. FIG. The rear view of the voltage application apparatus in Example 2. FIG. The front view of the voltage application apparatus in Example 3. FIG. The rear view of the voltage application apparatus in Example 3. FIG. XXVII-XXVII line position sectional drawing in FIG.

  The control unit is set by a target voltage setting unit that sets a target voltage value of the applied voltage, an applied voltage acquisition unit that acquires a voltage value of the applied voltage output from the application electrode, and the target voltage setting unit. A comparison unit that compares the target voltage value and the acquired voltage value acquired by the applied voltage acquisition unit, and the comparison result of the comparison unit indicates that the ratio of the acquired voltage value to the target voltage value is a predetermined value or less. Sometimes, it is preferable to include a determination unit that determines that the insulation of the insulating unit has deteriorated. In a normal energization state in which the insulation of the insulating part is maintained, the voltage value of the applied voltage applied from the application electrode to the human body is approximately the same as the target voltage value. However, when the insulating part is damaged due to damage or the like in the insulating part, when the sensing electrode is energized with the human body, a current is generated between the two and the resistance increases. When energized, the energization amount between the applied electrode and the human body decreases. As a result, in both cases, the applied voltage at the applied electrode is lower than the target voltage value. In the above configuration, the determination unit is configured to detect a decrease in insulation of the insulating unit when a ratio of the acquired special voltage, which is an applied voltage from the application electrode to the human body, with respect to the target voltage value is equal to or less than a predetermined value. Has been. Therefore, it is possible to detect the deterioration of the insulation with high accuracy.

  The control unit includes an application frequency setting unit that sets an application frequency of the application voltage, and a reference value storage in which a plurality of reference voltage maintenance rates associated with the set frequencies set by the application frequency setting unit are stored in advance. And a reference value extraction unit that extracts a reference value from the reference value storage unit based on the set frequency, and the determination unit is configured such that a ratio of the acquired voltage value to the target voltage value is the reference value. When the value is equal to or less than the reference value extracted by the value extracting unit, it is preferable to determine that the insulating property of the insulating unit has decreased. In this case, since the determination unit performs the above determination based on the reference value corresponding to the applied frequency of the applied voltage, even if the applied frequency of the applied voltage is changed, the insulation of the insulating unit can be accurately performed. Can be sensed.

  In the reference value storage unit, it is preferable that a higher reference value is associated with an increase in the set frequency. In this case, based on the correspondence between the reference value and the set frequency, the determination unit can detect that the insulating property of the insulating unit has decreased with higher accuracy.

  It is preferable that the control unit is configured to stop or reduce the output of the power supply unit when detecting the decrease in insulation. In this case, when the insulating property of the insulating portion is reduced, it is possible to prevent an excessive voltage from being applied to the human body from the portion where the insulating property is reduced, so that unintended energization can be prevented, It is possible to prevent a decrease in the user's experience.

  The control unit includes a boosting unit that boosts the output voltage output from the power supply unit to the application electrode to the target voltage value, and the boosting unit has the target voltage value less than a predetermined threshold value. Boosts the output voltage to the target voltage value for each application cycle corresponding to the applied frequency, and when the target voltage value is equal to or greater than a predetermined threshold, the application voltage is applied over a predetermined period from the start of application of the applied voltage. It is preferable to be configured to boost the output voltage. When the target voltage value is relatively low, the output voltage of the power supply unit can be quickly boosted to the target voltage by the boosting unit. Therefore, by boosting the voltage every application cycle corresponding to the applied frequency, it is possible to provide a period during which the booster circuit does not operate during the period during which the applied voltage is applied, thereby reducing power consumption. it can. On the other hand, when the target voltage is relatively high, it takes a relatively long time for the booster to boost the output voltage of the power supply unit to the target voltage value. Therefore, as described above, by boosting the output voltage over a predetermined period from the start of application of the applied voltage, the output voltage of the power supply unit is boosted to a target voltage value by boosting the output voltage over a plurality of application periods. It is possible.

  The voltage application device has a sheet-like base material extended from the main body, the application electrode and the lead part are formed on the surface of the base material, and the insulating part is the lead part. A first insulating layer laminated on the base material so as to cover the substrate, and a second insulating layer laminated on the first insulating layer, and the sensing electrode includes the first insulating layer and the first insulating layer. It is preferable to be provided between two insulating layers. In this case, since the application electrode and the lead part are formed on the surface of the sheet-like substrate and the insulating part has the first insulating layer and the second insulating layer, the voltage applying device can be made thin. At the same time, in such a thin voltage application device, it is easy to detect a decrease in the insulating property of the insulating portion through the sensing electrode before the insulating property of the lead portion is impaired. In addition, while the voltage application device is thin, the insulating portion has two layers of the first insulating layer and the second insulating layer, so that it is easy to improve the insulation of the lead portion.

  The sensing electrode is preferably formed at a position overlapping the lead portion in the stacking direction of the first insulating layer and the second insulating layer. In this case, before the insulation of the lead portion is impaired, it becomes easier to sense the deterioration of the insulation of the insulation portion through the sensing electrode.

Example 1
Examples of the voltage applying device will be described with reference to FIGS.
As shown in FIG. 13, the voltage application device 1 of the present embodiment is for applying electrical stimulation to the muscle 4 of the abdomen 3 of the human body 2. As shown in FIGS. 1 and 2, the voltage application device 1 includes a main body portion 10, an application electrode 30, and lead portions 38 and 39, and as shown in FIGS. 4A and 4B, a power supply unit. 20, a control unit 40, and an insulating unit 70 and a sensing electrode 80 as shown in FIG. As shown in FIGS. 4A and 4B, the control unit 40 is housed in the main body unit 10. The power supply unit 20 is housed in the main body unit 10 and is connected to the control unit 40. The application electrode 30 is configured to output an applied voltage applied to the human body 2. As shown in FIG. 14, the lead portions 38 and 39 electrically connect the application electrode 30 and the control unit 40. The sensing electrode 80 is connected to the ground terminal 40 a of the control unit 40. The insulating part 70 covers the lead parts 38 and 39 and the sensing electrode 80 and insulates the lead parts 38 and 39 and the sensing electrode 80 from the outside. The control unit 40 is configured to detect that the sensing electrode 80 and at least one of the human body 2 and the application electrode 30 are energized, and sense that the insulating property of the insulating unit 70 has decreased.

Hereinafter, the voltage application device 1 will be described in detail.
As shown in FIG. 13, the voltage application device 1 of this example is used by being attached to the abdomen 3 of the human body 2. In this example, the height direction of the human body 2 is the height direction Y. The direction from the central axis 2a of the human body 2 facing the front of the human body 2 and passing through the navel 3a parallel to the height direction Y to the right hand 5a side of the human body 2 is the right direction X1, and The direction toward the left hand 5b side is defined as a left direction X2. The right direction X1 and the left direction X2 are collectively referred to as the left-right direction X.

  As shown in FIG. 1, a main body 10 is provided at the center of the voltage application device 1. As shown in FIG.1 and FIG.3, the main-body part 10 has comprised the substantially disk shape. As shown in FIGS. 4A and 4B, the main body 10 includes a case 11 that houses a power supply unit 20 and a control unit 40 described later, and an outer shell of the voltage application device 1 that is attached to the case 11. And an outer shell forming body 12 which forms

  As shown in FIG. 4, the outer shell forming body 12 has a back side surface 12b on the side where a base material 33 described later is provided, and a front side surface 12a on the opposite side. The outer shell forming body 12 is made of an elastomer and is made of black silicon in this example. An electrode support portion 121 extending outward is provided on the outer edge of the outer shell forming body 12. As shown in FIG. 5, the base material 33 is attached to the back side surface 121 a of the electrode support portion 121 via a first double-sided adhesive tape 75. On the back side surface 33a of the base material 33, application electrodes 30 (311-313, 321-323) described later are formed. Further, as shown in FIG. 1, a colored region 122 is formed on the front side surface 121 b of the electrode support portion 121. The colored region 122 has a linear shape substantially along outer edges of application electrodes 311 to 313 and 321 to 323 described later. . In this example, the coloring part 122 is colored orange.

  As shown in FIGS. 4A and 4B, the case 11 is attached to the first case 111 having a concave shape and the first case 111, and the control unit 40 is accommodated between the first case 111 and the case 11. And a second case 112 that forms the storage portion 13 to be formed. Both the first case 111 and the second case 112 are made of ABS. The ribs 112 a erected along the outer edge of the second case 112 are fitted inside the outer edge 111 a of the first case 111 so that the second case 112 is joined to the first case 111.

  As shown in FIGS. 1 and 4B, the first case 111 is formed with a first cantilever 51 a and a second cantilever 51 b that form a part of an operation unit 50 described later. The first cantilever 51 a and the second cantilever 51 b are formed in a cantilevered state by hollowing out a part of the wall of the first case 111. The first cantilever 51a and the second cantilever 51b are arranged in this order from the upper side to the lower side in the height direction Y.

  As shown in FIGS. 1 and 4B, both cantilevers 51 a and 51 b are covered with the outer shell forming body 12. In the outer shell forming body 12, a symbol “+” protrudes immediately above the first cantilever 51 a, and a symbol “−” protrudes immediately above the second cantilever 51 b. An operation surface 54 that forms part of the portion 50 is formed. Due to the arrangement of both cantilevers 51a and 51b, “+” is on the upper side in the height direction Y, and “−” is on the lower side in the height direction Y, making it easy for the user to operate ergonomically.

  As shown in FIGS. 4A and 4B, the storage unit 13 formed between the first case 111 and the second case 112 has a control unit 40 (see FIG. 14). A substrate 41 is accommodated. The control board 41 is a printed board, and a control circuit is formed on the control board 41 by providing a wiring pattern (not shown), an electronic component 42, and the like. The control board 41 is fixed to the first case 111 via four bosses 116 and screws 115 formed to protrude from the inner surface of the first case 111. A small surface-mounted buzzer 43 is electrically connected to the control board 41. A booster circuit that forms the booster 404 shown in FIG. 14 is formed on the control substrate 41. The power of the battery 21 is boosted to a predetermined voltage (for example, 40 V) by the booster 404 and supplied to the application electrode 30.

  As shown in FIG. 12, the control board 41 as the control unit 40 includes a first terminal 451, a second terminal 452, a third terminal 453, and a fourth terminal 454. As shown in FIG. 4B, the first terminal 451, the second terminal 452, and the fourth terminal 454 are formed at positions facing the boss 116 on the control board 41. Although not shown, the third terminal 453 is similarly formed at a position facing the boss 116 on the control board 41. Then, as will be described later, the first terminal 451 is connected to the tip of the first control unit connection unit 380, the second terminal 452 is connected to the tip of the second control unit connection unit 390, and the third terminal 453 is connected to the first terminal 451. Is connected to the tip of the third controller connection portion 82, and the fourth terminal 454 is connected to the tip of the fourth controller connection portion 83.

  As shown in FIG. 4B, the storage unit 13 also stores a switch mechanism 52 that forms the operation unit 50. The switch mechanism 52 is a tact switch and includes a switch unit 53 that can be pressed. The switch mechanism 52 is electrically connected to the control unit 40. The switch mechanism 52 is disposed directly below the first cantilever 51a and the second cantilever 51b (see FIG. 1) formed in the first case 111, respectively. As a result, when the first cantilever 51a is pressed from the outside via the operation surface 54 of the outer shell forming body 12 covering the first case 111, the first cantilever 51a in the cantilever state is bent, so that the switch mechanism 52 The switch unit 53 is pressed. When the pressing on the operation surface 54 is released, the first cantilever 51a returns to the original position by the restoring force of the first cantilever 51a in the cantilever state. Similarly, the second cantilever 51b is configured to be pressed and released.

  As shown in FIGS. 4A and 4B, the second case 112 is formed with a battery holding part 14 that holds the battery 21 that constitutes the power supply part 20. As a result, the power supply unit 20 is built in the main body unit 10. The battery 21 is replaceable, and can be, for example, a coin battery or a button battery. In this example, a small and thin coin battery (lithium ion battery CR2032, nominal voltage 3.0 V) is adopted as the battery 21. In addition, it may replace with the said battery 21 and may employ | adopt the battery whose nominal voltage is 3.0-5.0V.

  A lid 15 that prevents the battery 21 from falling off is detachably attached to the battery holding portion 14 that holds the battery 21. The lid 15 has a disk shape that is slightly larger than the battery 21, and an O-ring 16 that seals between the lid 15 and the second case 112 is fitted on the outer periphery thereof. The battery 21 is electrically connected to the control unit 40 via a lead (not shown). As shown in FIG. 2, a plurality of linear grooves 113 extending radially from the outer periphery of the lid 15 are formed in the second case 112 at equal intervals. As shown in FIGS. 4A and 4B, the second case 112 is formed with a flange portion 112b that protrudes outside the rib 112a. Between the flange portion 112b and the outer edge portion 111a of the first case 111, the sheet-like composite body 7 (see FIG. 5) including the base material 33 is sandwiched. And as shown in FIG. 2, the sheet-like composite body 7 is extended from the main-body part 10 in the sheet form.

  As shown in FIGS. 5 and 6, the sheet-like composite 7 includes a first double-sided pressure-sensitive adhesive tape 75, a base material 33, a second double-sided pressure-sensitive adhesive tape 71, and an insulating sheet 72, and the outer shell forming body 12 in this order. It is laminated on the electrode support part 121 extending from. The base material 33 is affixed to the electrode support part 121 by the first double-sided adhesive tape 75. The insulating sheet 72 is affixed to the base material 33 by the second double-sided adhesive tape 71. The outer shapes of the first double-sided pressure-sensitive adhesive tape 75, the base material 33, the second double-sided pressure-sensitive adhesive tape 71, and the insulating sheet 72 are all the same as the outer shape of the electrode support part 121, and the outer shape of the main body part 10 is at the center. A substantially circular hole is formed. As a result, as shown in FIGS. 1, 3, and 5, the front side surface 33 b of the base material 33 that is the surface on which the operation surface 54 is exposed is covered with the first double-sided adhesive tape 75 and the electrode support portion 121. Yes.

  As shown in FIG. 10, the application electrode 30 and the lead portions 38 and 39 are provided on the back side surface 33 a of the base material 33. As described above, the application electrode 30 and the lead portions 38 and 39 are formed integrally with the main body portion 10 by attaching the base material 33 to the main body portion 10. The application electrode 30 and the lead portions 38 and 39 may be formed so as to be embedded in the base material 33. In this example, the application electrode 30 and the lead portions 38 and 39 are formed by printing a conductive ink containing a silver paste on the back side surface 33 a of the substrate 33.

  As shown in FIGS. 2 and 10, the application electrode 30 includes a first application electrode group 31 and a second application electrode group 32. The first application electrode group 31 extends from the main body portion 10 to the G1 region in the right direction X1, and the second application electrode group 32 extends from the main body portion 10 to the G2 region in the left direction X2. The number of application electrodes 30 included in the first application electrode group 31 and the second application electrode group 32 is not particularly limited. In this example, as shown in FIG. 2, the first application electrode group 31 and the second application electrode group 32 are used. Includes three application electrodes 311 to 313 and 321 to 323, respectively. That is, the first application electrode group 31 includes a first right application electrode 311, a second right application electrode 312, and a third right application electrode 313, and the second application electrode group 32 includes a first left application electrode 321. , A second left application electrode 322 and a third left application electrode 323 are provided. Then, in the base material 33, the portions where the first right application electrode 311, the second right application electrode 312 and the third right application electrode 313 are formed are respectively the first right base 331, the second right base 332 and the third right application. A portion where the first left applied electrode 321, the second left applied electrode 322, and the third left applied electrode 323 are formed is a first left base 341, a second left base 342, and a third left base 343, respectively. To do. As shown in FIG. 1, a cut portion 17 cut toward the main body portion 10 is provided between each of the first to third right base portions 331 to 333 and the first to third left base portions 341 to 343. Thus, the most cut portion of the cut portion 17 is the deepest portion 17a.

  As shown in FIG. 2, the first application electrode group 31 and the second application electrode group 32 are positioned symmetrically with respect to the center line 10a when the voltage application device 1 is attached to the abdomen 3 (see FIG. 13). Is configured to do. That is, the first right application electrode 311 and the first left application electrode 321 are positioned symmetrically with respect to the center line 10a when attached to the abdominal part 3, and the second right application electrode 312 and the second left application electrode 322 are positioned in line symmetry. Are arranged in line symmetry, and the third right application electrode 313 and the third left application electrode 323 are arranged in line symmetry.

  As shown in FIG. 2, each of the application electrodes 311 to 313 and 321 to 323 is formed in a substantially rectangular shape with rounded corners. The longitudinal direction of each of the application electrodes 311 to 313 and 321 to 323 (for example, the direction indicated by the symbol w in the third right application electrode 313 shown in FIG. 2) is generally along the left-right direction X. In this example, the application electrodes 311 to 313 and 321 to 323 all have the same shape. The shape of each of the application electrodes 311 to 313 and 321 to 323 is such that, for example, when the length in the longitudinal direction is w and the length in the short direction is h, h / w is 0.40 to 0.95, preferably In this example, h / w is set to 0.55.

  As shown in FIGS. 2 and 10, a plurality of non-electrode forming portions 34 having a predetermined hexagonal shape are formed at predetermined intervals inside each of the application electrodes 311 to 313 and 321 to 323. The first right application electrode 311, the second right application electrode 312, and the third right application electrode 313 are connected to the first lead part 38 as a lead part, and the first left application electrode 321 and the second left application electrode 313 are connected. A second lead portion 39 as a lead portion is connected to the application electrode 322 and the third left side application electrode 323.

  As shown in FIG. 10, the first lead part 38 includes a first control part connection part 380, a first terminal connection part 383, and a first electrode connection part group 384. The first control unit connection unit 380 protrudes inside the central hole of the base material 33 (that is, the main body unit 10 side). The first electrode connection portion group 384 includes a plurality of electrode connection portions (first electrode connection portion 385, second electrode connection portion 386, and third electrode connection portion 387) connected to the application electrodes 311 to 313. In this example, the first electrode connection portion 385, the second electrode connection portion 386, and the third electrode connection portion 387 are all formed in a linear shape. The first terminal connection portion 383 connects the first control portion connection portion 380 and the first electrode connection portion group 384, and is formed in a semicircular arc shape along the outer edge of the center hole of the base material 33. .

  Further, as shown in FIG. 10, the second lead portion 39 includes a second control portion connection portion 390, a second terminal connection portion 393, and a second electrode connection portion group 394, similar to the first lead portion 38. Have The second control unit connection unit 390 protrudes inward of the central hole of the base material 33 (that is, the main body unit 10 side). The second electrode connection portion group 394 includes a plurality of electrode connection portions (fourth electrode connection portion 395, fifth electrode connection portion 396, and sixth electrode connection portion 397) connected to the application electrodes 321 to 323. In this example, the fourth electrode connecting portion 395, the fifth electrode connecting portion 396, and the sixth electrode connecting portion 397 are all formed in a linear shape. The second terminal connection portion 393 connects the second control portion connection portion 390 and the second electrode connection portion group 394 and is formed in a semicircular arc shape along the outer edge of the central hole of the base material 33. .

  As shown in FIGS. 5 and 11, the insulating sheet 72 has a cutout portion 721 formed at a position overlapping the application electrode 30 and a sensing electrode 80. Similarly to the base material 33, a circular hole is formed in the center of the insulating sheet 72 that is slightly smaller than the outer edge 10 c of the main body 10 and can pass the control board 41. The insulating sheet 72 is made of PET.

  As shown in FIGS. 5 and 11, the sensing electrode 80 is formed by printing a conductive silver paste on the front side surface 72 b of the insulating sheet 72. The sensing electrode 80 includes a lead covering part 81, a third control part connection part 82, and a fourth control part connection part 83. As shown in FIG. 12, the lead covering portion 81 includes the first terminal connecting portion 383 and the first electrode of the first lead portion 38 in the stacking direction of the sheet composite 7 (that is, the thickness direction Z shown in FIG. 7). It is formed at a position that overlaps the connection portion group 384 and a position that overlaps the second terminal connection portion 393 and the second electrode connection portion group 394 of the second lead portion 39. The lead covering portion 81 is formed along the extending direction of the lead portions 38 and 39.

  As shown in FIGS. 5 and 12, the width of the lead covering portion 81 is larger than the width of the lead portions 38 and 39. As shown in FIGS. 11 and 12, the end portion 811 facing the cutout portion 721 in the lead covering portion 81 (that is, the vicinity of the portion connected to the application electrode 30 in the lead portions 38 and 39) is connected to the cutout portion 721. The end portion 811 and the cutout portion 721 are separated by about 2 mm. On the other hand, the inner edge portion 812 of the lead covering portion 81 is formed up to the inner edge of the central hole of the insulating sheet 72 (that is, the main body portion 10 side). The third control unit connection unit 82 and the fourth control unit connection unit 83 protrude inward of the central hole of the base material 33 (that is, the main body unit 10 side).

  As shown in FIG. 5, the application electrode 30 is formed on the back surface side 33 a of the base material 33, and the sensing electrode 80 is formed on the front side surface 72 b of the insulating sheet 72. Therefore, as shown in FIGS. 5 and 6, the application electrode 30 and the sensing electrode 80 overlap with each other with the second double-sided adhesive sheet 71 facing each other. And as shown in FIG. 12, the 1st control part connection part 380, the 2nd control part connection part 390, the 3rd control part connection part 82, and the 4th control which protruded into the center hole of the base material 33 and the sensing electrode 80. The part connection part 83 protrudes inward of the central hole of the base material 33 and the insulating sheet 72, and is connected to the first terminal 451, the second terminal 452, the third terminal 453, and the fourth terminal 454 of the control board 41. Each is connected.

  Specifically, as shown in FIG. 4B, the first control unit connection unit 380 is bent in the thickness direction along the inner wall of the first case 111, and the tip thereof is bent in parallel with the control board 41. Between the boss 116 and the control board 41. Thereby, the tip of the first control unit connection unit 380 is connected to the first terminal 451. Similarly, the tip of the second control unit connection unit 390 is connected to the second terminal 452, and the tip of the fourth control unit connection unit 83 is connected to the fourth terminal 454. Although not shown, the tip of the third control unit connection unit 82 is similarly connected to the third terminal 453.

  As shown in FIG. 6, the lead portions 38 and 39 are formed on the back side surface 33 a of the base material 33 and are insulated from the outside by being covered with a sheet-like second double-sided adhesive tape 71. A sheet-like insulating sheet 72 is laminated on the second double-sided adhesive tape 71, and the lead portions 38 and 39 are also insulated from the outside by the insulating sheet 72. The insulating sheet 72 has a front side surface 72 b (see FIG. 11) on which the sensing electrode 80 is provided attached to the second double-sided adhesive tape 71. Thereby, the insulating part 70 is an insulating sheet as a 2nd double-sided adhesive tape 71 as a 1st insulating layer which covers the lead parts 38 and 39, and a 2nd insulating layer which covers a 1st insulating layer (2nd double-sided adhesive tape 71). 72. The sensing electrode 80 is provided between the first insulating layer 71 and the second insulating layer 72 and is positioned closer to the outer surface 72 a of the second insulating layer 72 than the lead portions 38 and 39. In the normal state, the sensing electrode 80 is not exposed to the outside and is insulated from the outside. As a result, as shown in FIG. 7, direct current is prevented from flowing between the lead portions 38 and 39 and the sensing electrode 80 and the skin surface 60.

  On the other hand, as shown in FIG. 5, the application electrode 30 is covered with both of the second double-sided pressure-sensitive adhesive tape 71 and the insulating sheet 72 because the cut-out portions 711 and 721 are provided. Absent. A gel pad 35 (“Technogel (registered trademark)” manufactured by Sekisui Plastics Co., Ltd., model number SR-RA240 / 100) is attached to each of the application electrodes 311 to 313 and 321 to 323. The gel pad 35 has conductivity, and the application electrodes 311 to 313 and 321 to 323 can energize the abdomen 3 (see FIG. 13) via the gel pad 35. Moreover, the gel pad 35 has high adhesiveness, and the voltage application device 1 is attached to the abdomen 3 through the gel pad 35.

  As shown in FIG. 2, the gel pad 35 has a shape that is slightly larger than the application electrodes 311 to 313 and 321 to 323, and individually covers the application electrodes 311 to 313 and 321 to 323. Since the gel pad 35 is replaceable, the gel pad 35 can be replaced as appropriate when the adhesive force decreases, breaks, or becomes conspicuous with use. Alternatively, the used gel pad 35 may be replaced with a new one every predetermined period (for example, one month, two months, etc.).

  Next, the structure of the voltage application apparatus 1 of this example is demonstrated using the block diagram shown in FIG. As shown in FIG. 14, the voltage application device 1 includes a power supply unit 20, a control unit 40, and an operation unit 50 inside the main body unit 10. The control unit 40 includes a target voltage setting unit 401, an output mode storage unit 402, an applied frequency setting unit 403, a boosting unit 404, an EMS output unit 405, an applied voltage acquisition unit 406, a reference value storage unit 407, and a reference value extraction unit. 408, a comparison unit 409, a determination unit 410, a skin detection unit 411, a battery voltage detection unit 412, a discharge circuit unit 413, a power-off counter 414, and a timer 415.

  The target voltage setting unit 401 sets a target voltage value that is a target value of the applied voltage output from the application electrode 30. The target voltage value can be appropriately set by the user through the operation unit 50. In this embodiment, the target voltage value has 15 levels from level 1 to level 15. The target voltage value can be set in the range of 10 to 40V. When the level is 15, the maximum value of the setting range is set, and the voltage at 100% output decreases by 2.0V every time the level is lowered by 1. .

  The output mode storage unit 402 stores basic waveforms B1 to B5 of five burst wave patterns shown in FIG. Each basic waveform B1 to B5 includes a pulse group output period P and a pulse group output interruption period R1 to R5. That is, in each of the basic waveforms B1 to B5, the pulse group output period P is common, but the lengths of the pulse group output interruption periods R1 to R5 are different from each other.

  As shown in FIG. 16, in the pulse group output period P, a plurality of rectangular wave pulse signals S1 to S5 are output with output stop times N1 to N5 interposed therebetween. In this example, five rectangular wave pulse signals S1 to S5 are output. That is, the pulse group output period P includes the first rectangular wave pulse signal S1, the first output stop time N1, the second rectangular wave pulse signal S2, the second output stop time N2, and the third rectangular wave pulse signal. S3, third output stop time N3, fourth rectangular wave pulse signal S4, fourth output stop time N4, fifth rectangular wave pulse signal S5, and fifth output stop time N5 are executed in this order.

  In this example, the pulse widths and pulse voltages of the rectangular wave pulse signals S1 to S5 are constant, and the durations of the output stop times N1 to N5 are also constant. In this example, the pulse width of each of the rectangular wave pulse signals S1 to S5 is 100 μs, the pulse voltage (that is, the applied voltage value) is ± 40 V at 100% output, and the duration of the output stop time N1 to N5 is 100 μs. Therefore, the duration of the pulse group output period P is 1 ms. And the voltage polarity in each rectangular wave pulse signal S1-S5 is changed alternately by the order of output. That is, the first rectangular wave pulse signal S1, the third rectangular wave pulse signal S3, and the fifth rectangular wave pulse signal S5 have a positive polarity, and the second rectangular wave pulse signal S2 and the fourth rectangular wave. The pulse signal S4 has a negative polarity.

  As described above, the pulse width of each rectangular wave pulse signal S1 to S5 and the duration of each output stop time N1 to N5 in the pulse group output period P are 100 μs. Therefore, the pulse period of each rectangular wave pulse signal S1 to S5 in the pulse group output period P is 200 μs, which is sufficiently short. Therefore, the user recognizes these rectangular wave pulse signals S1 to S5 as one electrical stimulus. In addition, the frequency of each rectangular wave pulse signal S1-S5 in the pulse group output period P is 5,000 Hz.

  As shown in FIG. 16, in each of the basic waveforms B1 to B5, no pulse signal is output during the pulse group output interruption periods R1 to R5. The duration of the pulse group output interruption period R1 to R5 is longer than the duration of the pulse group output period P. In this example, as shown in FIG. 16, the duration of the pulse group output period P is 1 ms, and the durations of the pulse group output interruption periods R1 to R5 are 499 ms, 249 ms, 124 ms, 61.5 ms, respectively. 49 ms. Thus, the pulse group output interruption periods R1 to R5 have a very long duration compared to the output stop time in the pulse group output period P.

Therefore, as shown in FIG. 16, the basic waveform B1 includes a pulse group output period P of 1 ms and a pulse group output interruption period R1 of 499 ms. Then, as shown in FIG. 17A, by repeatedly outputting the basic waveform B1, the first burst wave (2 Hz) that is output at the applied frequency of 2 Hz in the pulse group output period P is output.
As shown in FIG. 17B, the basic waveform B2 is composed of a pulse group output period P of 1 ms and a pulse group output interruption period R2 of 249 ms. Then, as shown in FIG. 17B, by repeatedly outputting the basic waveform B2, the second burst wave (4 Hz) in which the pulse group output period P is output at the applied frequency of 4 Hz is output.
As shown in FIG. 16, the basic waveform B3 includes a pulse group output period P of 1 ms and a pulse group output interruption period R3 of 124 ms. And as shown in FIG.17 (c), by outputting the basic waveform B3 repeatedly, the 3rd burst wave (8 Hz) with which the pulse group output period P is output with the applied frequency of 8 Hz is output.
As shown in FIG. 16, the basic waveform B4 includes a pulse group output period P of 1 ms and a pulse group output interruption period R4 of 61.5 ms. And as shown in FIG.17 (d), the 4th burst wave (16Hz) with which pulse group output period P is output with the applied frequency of 16 Hz is output by repeatedly outputting basic waveform B4.
As shown in FIG. 16, the basic waveform B5 includes a 1 ms pulse group output period P and a 49 ms pulse group output interruption period R5. Then, as shown in FIG. 17 (e), by repeatedly outputting the basic waveform B5, a fifth burst wave (20 Hz) in which the pulse group output period P is output at an applied frequency of 20 Hz is output.
The basic waveforms B1 to B4 can be repeatedly output for a predetermined period in a predetermined combination.

  As described above, since the user recognizes the plurality of rectangular wave pulse signals S1 to S5 in the pulse group output period P as one electrical stimulus, the first burst wave shown in FIG. The electrical stimulation is output. Similarly, in the second burst wave shown in FIG. 17B, an electrical stimulus having a frequency of 4 Hz is output, and in the third burst wave shown in FIG. 17C, an electrical stimulus having a frequency of 8 Hz is output. In the fourth burst wave shown in d), an electrical stimulus having a frequency of 16 Hz is output, and in the fifth burst wave shown in FIG. 17E, an electrical stimulus having a frequency of 20 Hz is output.

  In the present embodiment, the output mode storage unit 402 stores in advance a plurality of output modes obtained by appropriately combining the first to fifth burst waves and the non-output period. In the present embodiment, the first output mode, the second output mode, and the third output mode are stored.

First, the first output mode is a warm-up mode configured to sequentially perform the following first status to fourth status. The conditions for each status are as follows.
(1) In the first status, 100% output is performed with the first burst wave (2 Hz) for 20 seconds. Note that a so-called soft start is performed in which the output voltage is gradually increased from 0% to 100% for the first 5 seconds in the first status.
(2) In the second status, 100% output is performed for 20 seconds with the second burst wave (4 Hz).
(3) In the third status, 100% output is performed with the third burst wave (8 Hz) for 10 seconds.
(4) In the fourth status, 100% output is performed for 10 seconds with the fourth burst wave (16 Hz).
The duration of the first output mode (that is, the total duration of the first status to the fourth status) is 1 minute. In the first output mode, since the burst wave frequency is configured to increase stepwise from 2 Hz to 16 Hz, the first output mode is called a warm-up mode.

The second output mode is a training mode configured to sequentially perform the following first status to fourth status.
(1) In the first status, after 100% output is performed for 3 seconds with the fifth burst wave (20 Hz), the non-output period is maintained for 2 seconds. Repeat for 5 minutes.
(2) In the second status, 100% output is performed with the fifth burst wave (20 Hz) for 3 seconds, and then 100% output is performed with the second burst wave (4 Hz) for 2 seconds. Repeat for 5 minutes.
(3) In the third status, 100% output is performed with the fifth burst wave (20 Hz) for 4 seconds, and then 100% output is performed with the second burst wave (4 Hz) for 2 seconds. Repeat for 5 minutes.
(4) In the fourth status, 100% output is performed with the fifth burst wave (20 Hz) for 5 seconds, and then 100% output is performed with the second burst wave (4 Hz) for 2 seconds. Repeat for 5 minutes.
In the second output mode, so-called soft start is performed in which the output voltage is gradually increased from 0% to 100% for 5 seconds in each of the first status to the fourth status.
The duration of the second output mode is 20 minutes. In the second output mode, the fifth burst wave with a frequency of 20 Hz is maintained for a predetermined period, and then no output or the second burst wave with a frequency of 4 Hz is maintained for a predetermined period, so that it is excellent for stimulating muscles effectively. . Therefore, the second output mode is called a training mode.

Next, the third output mode is a cool-down mode configured to sequentially perform the following first status to fourth status. The conditions for each status are as follows.
(1) In the first status, the fourth burst wave (16 Hz) is output for 10 seconds.
(2) In the second status, the third burst wave (8 Hz) is output for 10 seconds.
(3) In the third status, the second burst wave (4 Hz) is output for 20 seconds.
(4) In the fourth status, the first burst wave (2 Hz) is output for 20 seconds.
In the third output mode, the output in each status is gradually reduced to 100% at the start of the first status and 50% at the end of the fourth status.
The duration of the third output mode is 1 minute. In the third output mode, the burst wave frequency is configured to gradually decrease from 16 Hz to 2 Hz. Therefore, the third output mode is called a cool-down mode.

  The applied frequency setting unit 403 illustrated in FIG. 14 appropriately selects an output mode from the first to third output modes stored in the output mode storage unit 402 and sets the applied frequency of the applied voltage. Setting of the applied frequency in the applied frequency setting unit 403 can be performed by the user from the operation unit 50. In this example, the applied frequency of the applied voltage set by the applied frequency setting unit 403 is one of 2 Hz, 4 Hz, 8 Hz, 16 Hz, and 20 Hz, which is the frequency of the burst wave.

  A booster 404 shown in FIG. 14 boosts the output voltage of the power supply unit 20 to the target voltage value set by the target voltage setting unit 401. In this embodiment, the booster 404 has a boost chopper circuit (not shown). For example, when the target voltage value Vt of the applied voltage is less than or equal to a predetermined value, as shown in FIG. 18, the boost flag is set every time the pulse group output period P starts after the application flag is turned on. The boosting operation of the boosting unit 404 is started, and when the target voltage value Vt is reached, the boosting flag is turned off and the boosting operation of the boosting unit 404 is stopped. Thus, the booster 404 is configured to boost the output voltage of the power supply unit 20 to the target voltage value at each application cycle corresponding to the applied frequency when the target voltage value Vt of the applied voltage is equal to or less than a predetermined value. Has been.

  On the other hand, when the target voltage value Vt of the applied voltage is larger than the predetermined value, as shown in FIG. 19, the boosting flag is turned on after the application flag is turned on, and the boosting operation of the boosting unit 404 is started. . The boosting operation of the boosting unit 404 is performed regardless of the timing at which the pulse group output period P is started, and monitors the acquired voltage value (Feedback voltage value) acquired at a predetermined interval by the applied voltage acquiring unit 406 described later. While boosting to the target voltage value Vt. The interval at which the acquired voltage value is acquired by the applied voltage acquisition unit 406 can be appropriately set based on the count by the timer 415.

  The predetermined value for the target voltage value Vt of the applied voltage can be determined in consideration of the time required for boosting to the target voltage value Vt in the boosting unit 404. That is, when the target voltage value Vt is relatively high, it takes a relatively long time to boost the output voltage of the power supply unit 20 to the target voltage value Vt. In this case, if the boosting operation of the boosting unit 404 is performed at each timing when the pulse group output period P is started, the voltage cannot be boosted to the target voltage value Vt by the timing when the next pulse group output period P is started. May occur. Therefore, when the target voltage value Vt of the applied voltage is higher than the predetermined value, instead of performing the boosting operation of the boosting unit 404 at each timing when the pulse group output period P is started, the applied voltage is set as described above. The boosting operation of the boosting unit 404 is started at the application start timing, and the boosting operation is continued until the target voltage value Vt is reached regardless of the timing at which the pulse group output period P is started. This solves the above problem.

  As shown in FIGS. 18 and 19, the acquired voltage value (Feedback voltage value) acquired at a predetermined interval by the applied voltage acquisition unit 406 is a peak voltage value that is a peak value immediately after the end of the boosting operation by the boosting unit 404. After that, it gradually decreases, although slightly, due to slight discharge from the application electrode 30 to the skin surface 60 or the like. Since the boosting operation by the boosting unit 404 is stopped after reaching the target voltage value Vt, the peak voltage value Vp is larger than the target voltage value Vt.

  The EMS output unit 405 illustrated in FIG. 14 outputs a pulse signal to the application electrode 30 at a voltage boosted by the boosting unit 404 at the application frequency set by the application frequency setting unit 403. The EMS output unit 405 includes an EMS output bridge circuit 405 a illustrated in FIG. 15 and is electrically connected to the application electrode groups 31 and 32.

  The applied voltage acquisition unit 406 illustrated in FIG. 14 is configured to acquire the voltage value of the applied voltage output from the application electrode 30. In the present embodiment, the applied voltage acquisition unit 406 is formed as a part of a booster circuit that acquires the Feedback voltage value in the booster 404.

  In the reference value storage unit 407 illustrated in FIG. 14, the reference value of the ratio of the acquired voltage value to the target voltage value Vt is stored in advance in association with each set frequency set by the applied frequency setting unit 403. The reference value can be logically derived from the voltage drop of the discharge voltage or can be an actually measured value obtained by performing a voltage drop test in the boosting unit 404. In this embodiment, the reference value is 20% when the set frequency is 2 Hz, 50% when 4 Hz, 60% when 8 Hz, 70% when 16 Hz, and 80% when 20 Hz. The higher the set frequency, the higher the reference value.

  The reference value extraction unit 408 illustrated in FIG. 14 extracts the reference value from the reference value storage unit 407 based on the set frequency set by the applied frequency setting unit 403.

  A comparison unit 409 illustrated in FIG. 14 compares the target voltage value set by the target voltage setting unit 401 with the acquired voltage value acquired by the applied voltage acquisition unit 406. Then, the comparison unit 409 calculates the ratio of the acquired voltage value to the target voltage value Vt. Hereinafter, in this specification, the ratio of the acquired voltage value to the target voltage value Vt is also referred to as “voltage maintenance rate”.

  In the determination unit 410 illustrated in FIG. 14, when the comparison result of the comparison unit 409 indicates that the ratio of the acquired voltage value to the target voltage value Vt (voltage maintenance rate) is equal to or less than a predetermined value, the insulation of the insulating unit 70 has decreased. Is determined. And the determination part 410 is comprised so that it may determine that the insulation of the insulation part 70 fell, when the ratio of the acquisition voltage value with respect to the target voltage value Vt is below the reference value extracted by the reference value extraction part 408. Has been. For example, as shown in FIG. 8A, when a crack B1 reaching the sensing electrode 80 is formed at a position overlapping the first lead portion 38 in the insulating sheet 72, a conductive substance such as sweat enters. As a result, when the sensing electrode 80 and the skin surface 60 are energized through the crack B1, the applied voltage rapidly decreases as shown in FIG. When the ratio of the acquired voltage value with respect to the target voltage value Vt is equal to or less than the reference value extracted by the reference value extraction unit 408 at T1 that is the applied voltage acquisition timing, the determination unit 410 determines the insulating property of the insulating unit 70. Is determined to have decreased.

  The skin detection unit 411 detects whether or not the application electrode 30 is in contact with the skin. In detail, the skin detection part 411 is comprised by the skin detection circuit 411a electrically connected to the application electrode 30, as shown in FIG. The skin detection circuit 411a acquires the voltage value of the applied voltage in the first applied electrode group 31 and the second applied electrode group 32 and detects the resistance value between them. Then, the detected value is compared with a preset threshold value, and when the detected value is larger than the threshold value, it is detected that the first application electrode group 31 and the second application electrode group 32 are in contact with the skin. To do. In addition, since the skin detection part 411 acquires the voltage value of an applied voltage by the skin detection circuit 411a, it can be made to function as an applied voltage acquisition part.

  The battery voltage detection unit 412 detects the voltage of the battery 21 in the power supply unit 20 and determines whether or not the detected battery voltage V of the battery 21 in the power supply unit 20 is lower than a predetermined threshold value Vm. In this example, the nominal voltage V of the battery 21 is 3.0V, and the threshold value Vm is 2.1V.

  When it is determined by the determination unit 410 that the insulation has deteriorated, the control unit 40 controls ON / OFF of the microcomputer mounted on the control board 41 and stops the power supply from the power supply unit 20 to the application electrode 30. Or reduce. When power supply to the application electrode 30 is stopped, the voltage application device 1 automatically stops.

  In this example, a discharge circuit unit 413 that releases the power accumulated in the capacitor constituting a part of the boosting unit 404 to the outside is provided. Then, the control unit 40 stops or reduces the power supply to the application electrode 30 based on the sensing of the decrease in the insulation of the insulating unit 70 through the sensing electrode 80, and then accumulates in the capacitor through the discharge circuit unit 413. Open the power to the outside. Specifically, the power accumulated in the capacitor is discharged by a resistor (not shown) included in the discharge circuit unit 413. Thereby, even when the voltage application device 1 is restarted, an unexpected high voltage current is prevented from flowing to the application electrode 30 due to the electric power accumulated in the capacitor of the booster 404.

  The above-described control when the controller 40 senses a decrease in the insulation of the insulating unit 70 is replaced with the power supply stoppage or reduction, or together with these, the buzzer 43 detects a decrease in the insulation of the insulating unit 70. A sound such as a buzzer sound for notification may be output. Further, instead of or together with these, a predetermined display unit may be provided in the main body unit 10 and a predetermined display for notifying the display unit that a decrease in the insulation of the insulating unit 70 is detected may be performed. Good. In addition, a light emitting device such as an LED may be provided in the main body unit 10 so that the light emitting device emits light in a predetermined light emitting mode in order to notify that a decrease in insulation of the insulating unit 70 is detected. Further, a predetermined vibration generating device such as a vibrator may be provided in the main body unit 10 to generate a predetermined mode of vibration from the vibration generating device in order to notify that the insulation unit 70 has sensed a decrease in insulation. Good. Further, the control unit may include a fuse configured to cut the closed circuit L1 when a current of a predetermined amount or more flows when a decrease in the insulating property of the insulating unit 70 is detected. Further, the voltage application device 1 is provided with a communication unit for performing wireless communication or wired communication with a portable terminal such as a smartphone, and the predetermined display is performed on the terminal screen via the communication unit, or from the terminal A voice for the notification may be output, or the predetermined mode of vibration may be generated from the vibration generation device of the terminal.

Next, how the voltage application device 1 is used will be described.
As shown in FIG. 13, the voltage application device 1 is attached to the abdomen 3 of the human body 2. The pasting position is a position where each application electrode 30 overlaps each section 4a of the rectus abdominis muscle 4 when the voltage application device 1 is viewed from the front side, and the voltage application device 1 is the rectus abdominis muscle 4 in the abdomen 3. Is the position to wrap in the left-right direction. As a result, as shown in FIG. 7, the application electrode 30 and the skin surface 60 of the abdomen 3 can be energized via the gel pad 35. Thereby, the application electrode 30, the human body 2, the control unit 40, and the power supply unit 20 are electrically connected, and the closed circuit L1 in the normal state is formed. Then, an applied voltage is output from the applied electrode 30 in a predetermined application pattern set by the applied frequency setting unit 403 shown in FIG. The application pattern of the applied voltage output from the application electrode 30 can be appropriately changed based on a predetermined timing based on the count by the timer 415 and an operation input to the operation unit 50.

  Then, as shown in FIG. 8A, by any chance, a crack B1 reaching the sensing electrode 80 is formed at a position overlapping the first lead portion 38 in the insulating sheet 72, and the insulating property of the insulating portion 70 is lowered. If the conductive material such as sweat enters the crack B1, which is a portion where the insulating property is reduced, the sensing electrode 80 and the skin surface 60 can be energized through the crack B1. Become. As a result, the sensing electrode 80, the crack B1, the human body 2, the application electrode 30, the ground terminal 40a of the control unit 40, and the power supply unit 20 are electrically connected, and the closed circuit L2 is formed.

And the control part 40 senses that the insulation of the insulation part 70 fell based on the flow shown in FIG.
First, in step S <b> 1 shown in FIG. 21, the target voltage setting unit 401 sets the target table voltage value of the applied voltage applied from the application electrode 30 in accordance with the output level set from the operation unit 50. Further, according to the output mode selected by the operation unit 50, the set frequency which is the applied frequency of the applied voltage is set by the applied frequency setting unit 403. Thereafter, in step S2, the control unit 40 determines whether or not it is the timing immediately before the transmission of the EMS pulse signal. For example, in FIG. 18, it is determined whether or not the current time is the timing T1 immediately before the transmission of the EMS pulse signal. When the present time is not T1, it progresses to No of step S2 and repeats step S2 again. On the other hand, if the current time point is T1, the process proceeds to Yes in step S2, and in step S3, the applied voltage acquisition unit 406 acquires the current output voltage from the feedback voltage of the boosting unit 404. Note that the voltage acquisition by the applied voltage acquisition unit 406 may be performed constantly or at intervals.

  Thereafter, in step S4, the control unit 40 determines whether or not the current time is the no-output period in the first status of the second output mode described above. If the current time is the no-output period, the process proceeds to Yes in step S4. In step S5, the comparison unit 409 compares the acquired voltage value acquired in step S3 with the set voltage value set in step S1. In step S5, the determination unit 410 determines whether the comparison result of the comparison unit 409 is that the acquired voltage value is 50% or less of the set voltage value.

  If it is determined in step S5 that the acquired voltage value is 50% or less of the set voltage value, the process proceeds to Yes in step S5. In step S <b> 6, the determination unit 410 determines that the insulation of the insulating unit 70 has deteriorated. Thereafter, in step S7, the control unit 40 stops the output of the power supply unit 20 and ends this control.

  On the other hand, if it is determined in step S5 that the acquired voltage value is not 50% or less of the set voltage value, the process proceeds to No in step S5. In step S8, it is determined whether the output level set by the operation unit 50 is 12 or less. The output level 12 corresponds to an applied voltage value of 35V. When it is determined that the output level is 12 or less, the process proceeds to step S20 described later.

  On the other hand, if the output level is not 12 or less, the process proceeds to No in step S8. In step S9, it is determined whether the output level set by the operation unit 50 is 14 or less. When it is determined that the output level is not 14 or less, the process proceeds to No in step S9, and in step S10, the acquired voltage value acquired in step S3 is compared with the set voltage value set in step S1. In step S10, the determination unit 410 determines whether the comparison result of the comparison unit 409 is that the acquired voltage value is 78% or less of the set voltage value.

  If it is determined in step S10 that the acquired voltage value is 78% or less of the set voltage value, the process proceeds to Yes in step S10. In step S <b> 6, the determination unit 410 determines that the insulation of the insulating unit 70 has deteriorated. Thereafter, in step S7, the control unit 40 stops the output of the power supply unit 20 and ends this control. On the other hand, if it is determined in step S10 that the acquired voltage value is not 78% or less of the set voltage value, the process proceeds to No in step S10. And it returns to step S2 again.

  When it is determined in step S9 that the output level is 14 or less, the process proceeds to Yes in step S9, and in step S11, the acquired voltage value acquired in step S3 and the set voltage value set in step S1 Compare In step S11, the determination unit 410 determines whether the comparison result of the comparison unit 409 is that the acquired voltage value is 80% or less of the set voltage value.

  If it is determined in step S11 that the acquired voltage value is 80% or less of the set voltage value, the process proceeds to Yes in step S10. In step S <b> 6, the determination unit 410 determines that the insulation of the insulating unit 70 has deteriorated. Thereafter, in step S7, the control unit 40 stops the output of the power supply unit 20 and ends this control. On the other hand, if it is determined in step S11 that the acquired voltage value is not 80% or less of the set voltage value, the process proceeds to No in step S11. And it returns to step S2 again.

  If it is determined in step S8 that the output level is 12 or less, the process proceeds to step S20 shown in FIG. In step S20, it is determined which value the applied frequency (set frequency) set by the applied frequency setting unit 403 is.

  If the set frequency is 2 Hz, the process proceeds to step S21. In step S21, the reference value extraction unit 408 extracts 20% as the first reference value from the reference value storage unit 407 based on the set frequency (2 Hz). In step S21, the comparison unit 409 compares the acquired voltage value with the target voltage value, and the determination unit 410 determines whether the ratio of the acquired voltage value to the target voltage value is 20% or less. In step S21, when it is determined that the acquired voltage value is 20% or less of the target voltage value, the process proceeds to Yes in step S21, and the process proceeds to step S6 illustrated in FIG. In step S6, the determination unit 410 determines that the insulation of the insulating unit 70 has deteriorated, and then in step S7, the control unit 40 stops the output of the power supply unit 20 and ends this control. In step S7, after the output of the power supply unit 20 is stopped, the discharge circuit unit 413 may be controlled to release the power accumulated in the capacitor of the boosting unit 404 to the outside. In step S7, the output of the power supply unit 20 may be reduced instead of stopping the output of the power supply unit 20.

  On the other hand, if it is determined in step S21 that the acquired voltage value is not less than 20% of the target voltage value, the process proceeds to No in step S21, and in step S22, the reference value storage unit 407 is based on the set frequency (2 Hz). 30% is extracted as the second reference value. In step S22, the comparison unit 409 compares the acquired voltage value with the peak voltage value, and the determination unit 410 determines whether the ratio of the acquired voltage value to the peak voltage value is 30% or less. If it is determined in step S22 that the acquired voltage value is 30% or less of the peak voltage value, the process proceeds to Yes in step S22, and the process proceeds to step S6 illustrated in FIG. In step S6, it is determined by the determination unit 410 that the insulation of the insulating unit 70 has decreased, and in step S7, the control unit 40 stops the output of the power supply unit 20 and ends this control. On the other hand, when it is determined in step S22 that the acquired voltage value is not 30% or less of the peak voltage value, the process proceeds to No in step S22 and returns to step S2 illustrated in FIG.

  Moreover, in step S20 shown in FIG. 22, when the set frequency is 4 Hz, steps S23 and S24 are performed in the same manner as steps S21 and S22 described above. However, in step S23, the reference value extraction unit 408 extracts 50% as the first reference value from the reference value storage unit 407 based on the set frequency (4 Hz). In step S24, the reference value extraction unit 408 extracts 60% as the second reference value from the reference value storage unit 407 based on the set frequency (4 Hz).

  In step S20, even when the set frequency is 8 Hz, steps S25 and S26 are performed in the same manner as steps S21 and S22 described above. However, in step S25, the reference value extraction unit 408 extracts 60% as the first reference value from the reference value storage unit 407 based on the set frequency (8 Hz). In step S26, the reference value extraction unit 408 extracts 70% as the second reference value from the reference value storage unit 407 based on the set frequency (8 Hz).

  In step S20, even when the set frequency is 16 Hz, steps S27 and S28 are performed in the same manner as steps S21 and S22 described above. However, in step S27, the reference value extraction unit 408 extracts 70% as the first reference value from the reference value storage unit 407 based on the set frequency (16 Hz). In step S28, the reference value extraction unit 408 extracts 85% as the second reference value from the reference value storage unit 407 based on the set frequency (16 Hz).

  In step S20, even when the set frequency is 20 Hz, steps S29 and S30 are performed in the same manner as steps S21 and S22 described above. However, in step S29, the reference value extraction unit 408 extracts 80% as the first reference value from the reference value storage unit 407 based on the set frequency (20 Hz). In step S30, the reference value extraction unit 408 extracts 88% as the second reference value from the reference value storage unit 407 based on the set frequency (20 Hz).

  As described above, the voltage application device 1 is configured to detect that the sensing electrode 80 is energized with the human body 2 and to sense that the insulating property of the insulating unit 70 has decreased. Although not shown, the control by the control unit 40 is similarly performed when a crack B <b> 1 is formed at a position overlapping the second lead portion 39 in the insulating sheet 72.

  In this example, as shown in FIG. 8B, a crack B2 reaching the first application electrode group 31 is formed at a position overlapping the second lead portion 38 in the first insulating layer 71, so that the insulating layer 71 is insulated. Even when the insulation of the unit 70 is lowered, the control by the control unit 40 is performed. That is, the sensing electrode 80, the crack B2, which is a portion with reduced insulation, the application electrode group 30, the control unit 40, and the power supply unit 20 are electrically connected, and a closed circuit (not shown) is formed. In this case, the skin detection unit 411 can be used as the applied voltage detection unit, and the output voltage detected by the skin detection unit 411 can be used as the acquired voltage value by the application voltage detection unit. Although not shown, the control by the control unit 40 is similarly performed when the crack B <b> 2 is formed in the first insulating layer 71 at a position overlapping the second lead portion 39.

  On the other hand, as a comparative example, as shown in FIG. 9, a coating layer 901 made of silicon resin that covers only the lead portions 38 and 39 and insulates the lead portions 38 and 39 from the outside instead of the insulating layer 70 in this embodiment is provided. The case of the structure provided is demonstrated. In the comparative example, as shown in FIG. 9, when the crack B3 occurs in the coating layer 901 and the insulation of the coating layer 901 decreases, the application electrode 30 and the skin surface 60 can be energized through the crack B3. A current flows directly between the lead portions 38 and 39 and the skin surface 60 through the crack B3. And excessive irritation | stimulation arises in the skin surface 60 which contact | connects the crack B3, and a user feels discomfort, or a desired electrical stimulation cannot be given to a muscle from the application electrode 30, and a user's bodily sensation is reduced. There is a fear.

The effects of the voltage application device 1 of this example will be described in detail below.
In the voltage application device 1, a sensing electrode 80 provided separately from the application electrode 30 for applying a voltage is covered with an insulating portion together with the lead portions 38 and 39. The sensing electrode 80 is connected to the ground terminal 40 a of the control unit 40. Therefore, when the insulating property of the insulating portion 70 is reduced and the sensing electrode 80 is energized with at least one of the human body 2 and the application electrode 30, the current output from the application electrode 30 flows to the ground via the detection electrode 80. The applied voltage at the applied electrode 30 drops. As a result, the control unit 40 can detect that the sensing electrode 30 is energized with at least one of the human body 2 and the application electrode 30 and sense that the insulating property of the insulating unit 70 has decreased. Therefore, in the unlikely event that the insulation of the insulating part 70 that insulates the lead parts 38 and 39 is reduced, this can be detected by the control part 40, and therefore measures for preventing the user's feeling from being lowered are taken. Can be taken.

  Furthermore, since the sensing electrode 80 is connected to the ground terminal 40a of the control unit 40, electromagnetic noise from the outside can be shielded or confined. As a result, the influence of external electromagnetic noise on the control unit 40 and the like can be reduced, and the noise resistance of the voltage application device 1 can be improved. In addition, an improvement in noise characteristics in the voltage application device 1 can be expected.

  In this example, the control unit 40 includes a target voltage setting unit 401 that sets a target voltage value of the applied voltage, an applied voltage acquisition unit 406 that acquires a voltage value of the applied voltage output from the application electrode 30, and a target. The comparison unit 409 that compares the target voltage value set by the voltage setting unit 401 with the acquired voltage value acquired by the applied voltage acquisition unit 406, and the comparison result of the comparison unit 409 indicates the ratio of the acquired voltage value to the target voltage value. And a determination unit 410 that determines that the insulation of the insulating unit 70 has decreased when the value is equal to or less than a predetermined value. In a state where the insulation of the insulating portion 70 is maintained, the voltage value of the applied voltage applied from the application electrode 30 to the human body 2 is approximately the same as the target voltage value. However, when the insulating portion 70 is damaged and the insulating property of the insulating portion 70 is lowered, when the sensing electrode 80 is energized with the human body 2, a current is generated between the two and the load increases. When 80 is energized with the application electrode 30, the energization amount between the application electrode 30 and the human body 2 decreases. As a result, the applied voltage at the applied electrode 30 is lower than the target voltage value. In the above configuration, the determination unit 410 senses a decrease in the insulation of the insulating unit 70 when the ratio of the acquired special voltage, which is the voltage applied from the application electrode 30 to the human body 2, with respect to the target voltage value is equal to or less than a predetermined value. Is configured to do. Therefore, it is possible to detect the deterioration of the insulation with high accuracy.

  In this example, the control unit 40 stores in advance an application frequency setting unit 403 that sets the application frequency of the application voltage, and a plurality of reference values associated with the set frequencies set by the application frequency setting unit 403. The reference value storage unit 407 and a reference value extraction unit 408 that extracts a reference value from the reference value storage unit 407 based on the set frequency. The determination unit 410 has a ratio of the acquired voltage value to the target voltage value. When the reference value is less than or equal to the reference value extracted by the reference value extraction unit 408, it is determined that the insulating property of the insulating unit 70 has decreased. Accordingly, since the determination unit 410 performs the above determination based on the reference value corresponding to the applied frequency of the applied voltage, the insulation of the insulating unit 70 can be accurately performed even when the applied frequency of the applied voltage is changed. Sexual decline can be detected.

  In this embodiment, the reference value storage unit 407 stores a first reference value for the target voltage value Vt and a second reference value for the peak voltage value Vp as reference values. And the determination part 410 is comprised so that an acquired voltage value can be determined by comparing with two reference values, a 1st reference value and a 2nd reference value. Thereby, the detection precision of the insulation fall of the insulation part 70 is raised further.

  In this example, in the reference value storage unit 407, the higher the set frequency, the higher the reference value is associated with. Thereby, based on the correspondence between the reference value and the set frequency, the determination unit 410 can detect that the insulating property of the insulating unit 70 has decreased with higher accuracy.

  In this example, the control unit 40 is configured to stop or reduce the power supply to the application electrode 30 when a decrease in insulation is detected. Thereby, when the insulating property of the insulating part 70 is lowered, it is possible to prevent an excessive voltage from being applied to the human body 2 from the portion where the insulating property is lowered, thereby preventing a decrease in the user's sensation. it can.

  In this example, the control unit 70 includes a boosting unit 404 that boosts the output voltage output from the power supply unit 20 to the application electrode 30 to a target voltage value. The boosting unit 404 has a target voltage value of a predetermined value. When the voltage is less than the threshold value, the output voltage is boosted to the target voltage value for each application cycle corresponding to the applied frequency. The output voltage is boosted. When the target voltage value is relatively low, the booster 404 can boost the output voltage of the power supply unit 20 to the target voltage value at an early stage. Therefore, by boosting the voltage every application cycle corresponding to the applied frequency, it is possible to provide a period during which the booster circuit does not operate during the period during which the applied voltage is applied, thereby reducing power consumption. it can. On the other hand, when the target voltage value is relatively high, it takes a relatively long time for the boosting unit 404 to boost the output voltage of the power supply unit 20 to the target voltage value. Therefore, as described above, by boosting the output voltage over a predetermined period from the start of application of the applied voltage, it is possible to boost the output voltage of the power supply unit 20 to a target voltage value by boosting the output voltage over a plurality of application periods. It is said.

  In this example, the sensing electrode 80 is formed along the extending direction of the lead portions 38 and 39. As a result, the sensing electrode 80 can easily detect a decrease in the insulating property of the insulating portion 70 before the insulating properties of the lead portions 38 and 39 are impaired.

  In this example, the sensing electrode 80 is provided at a position closer to the outer surface 72a of the insulating part 70 than the lead parts 38 and 39. As a result, when the outer surface 72a of the insulating portion 70 is damaged due to external impact or the like, the control portion 40 is insulated via the sensing electrode 80 before the insulating properties of the lead portions 38 and 39 are impaired. It is possible to sense a decrease in insulation of the portion 70 (second insulating layer 72).

  Further, the voltage application device 1 of this example has a sheet-like base material 33 extending from the main body 10, and the application electrode 30 and the lead parts 38 and 39 are formed on the surface 33 a of the base material 33. The insulating part 70 includes a first insulating layer 71 laminated on the base material 33 so as to cover the lead parts 38 and 39, and a second insulating layer 72 laminated on the first insulating layer 71. The sensing electrode 80 is provided between the first insulating layer 71 and the second insulating layer 72. Thus, the application electrode 30 and the lead portions 38 and 39 are formed on the surface 33a of the sheet-like base material 33, and the insulating portion 70 includes the first insulating layer 71 and the second insulating layer 72. Can be made thin. At the same time, in such a thin voltage application device 1, it becomes easy to sense a decrease in the insulation of the insulating part 70 through the sensing electrode 80 before the insulation of the lead parts 38 and 39 is impaired. In addition, while the voltage application device 1 is thin, the insulating portion 70 is formed of two layers of the first insulating layer 71 and the second insulating layer 72, so that it is easy to improve the insulating properties of the lead portions 38 and 39. .

  In this example, the sensing electrode 80 is formed at a position overlapping the lead portions 38 and 39 in the stacking direction Z of the first insulating layer 71 and the second insulating layer 72. This makes it easier to sense a decrease in the insulating property of the insulating portion 70 via the sensing electrode 80 before the insulating properties of the lead portions 38 and 39 are impaired. Further, in this example, the sensing electrode 80 is formed wider than the lead portions 38 and 39 when viewed from the stacking direction Z. Thereby, before the insulation of the lead parts 38 and 39 is impaired, it becomes much easier to sense the deterioration of the insulation of the insulating part 70 (second insulating layer 72).

  Further, in this example, the control unit 40 is configured to stop or reduce the power supply to the application electrode 30 when the sensing electrode 80 senses a decrease in insulation of the insulating unit 70. Thereby, when the insulation of the insulation part 70 falls, since it can prevent that an excessive electrical stimulus is given to the human body 2 from the part (crack B1) where the insulation fell, the fall of a user's bodily sensation is reduced. Can be prevented.

  In this example, the control unit 40 is configured to release the power accumulated in the capacitor of the boosting unit 404 to the outside after stopping or reducing the power supply to the application electrode 30. This prevents the electric power accumulated in the capacitor of the boosting unit 404 from being inadvertently applied to the human body 2 from the application electrode 30 after sensing a decrease in the insulation of the insulating unit 70. It is possible to prevent a person's experience from being lowered.

  In this example, the lead portions 38 and 39 are formed by printing on the sheet-like base material 33. However, the present invention is not limited to this, and the lead portions 38 and 39 may be made of conductive wires. . The wire shape of the lead portions 38 and 39 may be a single wire or a stranded wire. In this case, the first insulating portion 71 is formed into a tube shape that covers the wire, a sensing electrode 80 made of a conductive wire is provided along the outer surface of the first insulating portion 71, and the tube-shaped first portion is further formed. Two insulating parts 72 can be covered. Even when such a configuration is employed, the same effects as those of the present application can be achieved.

  As described above, according to this example, in the voltage application device 1 in which electrical stimulation is output from the application electrode 30, the insulation of the insulation unit 70 that insulates the lead portions 38 and 39 connected to the application electrode 30 from the outside. Can be sensed.

  Further, the battery 21 provided in the power supply unit 20 can be a button battery or a coin battery, and in this example, is a coin battery. Thereby, since the battery 21 becomes small, it contributes to size reduction of the voltage application apparatus 1. FIG. And since weight reduction can be achieved with the size reduction of the voltage application apparatus 1, the application electrode 30 becomes difficult to peel and drop | omit from a user's body, usability improves, and portability also improves. Furthermore, since the battery 21 is also thin, it contributes to the thinning of the voltage application device 1. And since the voltage application apparatus 1 becomes thin, the user can wear clothes from the top with the voltage application apparatus 1 attached. For this reason, the voltage application device 1 can be used in various other situations during commuting, attending school, working such as housework or work. In addition, since the button battery and the coin battery have stable discharge characteristics at a high operating voltage compared to other dry batteries, the voltage application device 1 can be stably operated over a relatively long time.

  In addition, a battery having a nominal voltage of 3.0 to 5.0 V can be used as the battery 21, and a 3.0 V battery 21 is used in this example. Since the drive voltages of the electronic component 42 and the buzzer 43 provided in the voltage applying device 1 are the same, it is not necessary to separately provide a step-down circuit or a step-up circuit for driving these electronic components 42 and 43. Thereby, it can contribute to size reduction.

  The power supply unit 20 may incorporate a rechargeable battery instead of the replaceable battery 21 described above. As a charging means for such a battery, a power supply terminal that can be connected to an external power source may be provided, or a non-contact power supply unit that uses electromagnetic induction may be provided. In this case, since the battery can be used repeatedly, consumables can be reduced compared to the case of using a non-rechargeable battery.

  In this example, the base material 33 on which the application electrode 30 is formed extends from the main body portion 10 and is bonded to the electrode support portion 121 extended from the outer shell forming body 12, thereby The electrode 30 and the main body 10 are integrally formed. Instead of this, the base member 33 and the main body portion 10 are separated from each other, and the electrode support portion 121 and the outer shell forming body 12 are formed as separate bodies. You may comprise so that it can mutually isolate | separate at the time of use. In this case, the application electrode 30 can be separated from the main body 10 and replaced with another form of application electrode. Moreover, since the application electrode 30 does not have an electronic component, the application electrode 30 can be easily washed by separating.

  Moreover, the voltage application apparatus 1 may have a wireless communication part. For example, you may control operation | movement of the voltage application apparatus 1 by operating the control part 40 from the outside via a wireless communication part. In this case, the power supply to the application electrodes 311 to 313 and 321 to 323 may be individually controllable. In addition, the usage history of the voltage application device 1, the current operating state, the remaining battery level, and the like may be transmitted to the outside via the wireless communication unit so that these can be confirmed. The external receiving device is not particularly limited, and a portable terminal such as a smartphone or a personal computer can be used.

(Example 2)
In the voltage application device 1 of Example 2, as shown in FIGS. 23 and 24, G3 and G4 can be applied to the muscles of the flank in addition to the rectus abdominis 4 (see FIG. 13). A third application electrode group 314 and a fourth application electrode group 324 are provided in the region. In addition, in this example, the same code | symbol is attached | subjected to the element equivalent to Example 1, and the description is abbreviate | omitted.

  As shown in FIG. 23, the electrode support portion 121 further extends in the right direction X1 from the second right base portion 332 to form a fourth right base portion 334. A belt attachment portion 125 for attaching a belt (not shown) is provided at an end portion of the third right base portion 334 in the right direction X1. A third application electrode group 314 is formed on the back side surface of the fourth right base 334 as shown in FIG. The third application electrode group 314 includes a fourth right application electrode 315 and a fifth right application electrode 316. The fourth right application electrode 315 is connected to the control unit 40 via the third lead portion 381. On the other hand, the fifth right application electrode 316 is connected to the control unit 40 via the fourth lead portion 391. Then, the same gel pads 35 as those in the first embodiment are attached to the fourth right application electrode 315 and the fifth right application electrode 316, respectively.

  Similarly, as shown in FIG. 23, the electrode support portion 121 further extends in the left direction X2 from the second left base portion 342 to form a fourth left base portion 344. A belt attachment portion 125 for attaching a belt (not shown) is provided at an end portion of the fourth left base portion 344 in the left direction X2. A fourth application electrode group 324 is formed on the rear side surface of the fourth left base 334 as shown in FIG. The fourth application electrode group 324 includes a fourth left application electrode 325 and a fifth left application electrode 326. The fourth left applied electrode 325 is connected to the control unit 40 via the third lead 381. On the other hand, the fifth left application electrode 326 is connected to the control unit 40 via the fourth lead portion 391. A gel pad 35 similar to that in the first embodiment is attached to the fourth left application electrode 325 and the fifth right application electrode 326, respectively.

  As shown in FIG. 24, the first lead portion 38 and the second lead portion 39 are formed in this example as well as in the first embodiment, and are covered with the sensing electrode 80 in the stacking direction Z (see FIG. 6). Yes. Further, in this example, the third lead portion 381 and the fourth lead portion 391 are also covered with the sensing electrode 80 in the stacking direction Z. The first application electrode group 31 and the second application electrode group 32 are both collectively covered with a large gel pad 350.

  And when using the voltage application apparatus 1 of this example, while sticking the 1st application electrode group 31 and the 2nd application electrode group 32 to the abdominal part 3 (refer FIG. 13) similarly to the case of Example 1. FIG. The third application electrode group 314 is attached to the right flank, and the fourth application electrode group 324 is attached to the left flank. And it can be used in the state wound around the human body 2 (refer FIG. 13) via the belt which is not illustrated. Thereby, the voltage application apparatus 1 can give electrical stimulation to the abdominal part 3 similarly to the case of Example 1. FIG. Further, a closed circuit can be formed through the fourth right application electrode 315, the fifth right application electrode 316, and the human body 2 to apply electrical stimulation to the right flank, and the fourth left application electrode 325 and the fifth left application A closed circuit can be formed through the electrode 326 and the human body 2 to apply electrical stimulation to the left flank.

  The voltage application device 1 of this example also has the same effects as those of the first embodiment. In this example, the third lead portion 381 and the fourth lead portion 391 are formed longer than the first lead portion 38 and the second lead portion 39 and are formed at positions close to the outer edge of the electrode support portion 121. ing. For this reason, the third lead portion 381 and the fourth lead portion 391 are likely to receive impact from the outside, and the insulating property of the insulating portion 70 that insulates the third lead portion 381 and the fourth lead portion 391 may be easily lowered. However, since the sensing electrode 80 is formed as described above, even if the insulation of the insulating part 70 that insulates the third lead part 381 and the fourth lead part 391 is deteriorated, this can be reliably detected. It is possible to prevent a decrease in the user's experience.

(Example 3)
In the voltage application device 1 according to the third embodiment, as shown in FIGS. 25 to 27, the application electrode 30 has the same configuration as the application electrodes 311 and 321 according to the first embodiment, but the application electrodes 311 and 321 that are slightly larger. Two are provided. In addition, as shown in FIG. 25, the notch part 175 cut | disconnected toward the notch part 17 along the main body part 10 in the boundary part with the main body part 10 in the 1st right side base part 331 and the 1st left side base part 341. Is formed. The most cut portion of the cut portion 175 is the deepest portion 17a.

  As shown in FIG. 26, the sensing electrodes 801, 802, 803 do not overlap the lead portions 38, 39 when viewed from the back side of the voltage application device 1, but the lead portions 38, 39 are in the vicinity of the lead portions 38, 39. It extends along the extending direction. As shown in FIG. 27, the sensing electrodes 801 and 802 are formed on the back side surface 33a of the substrate 33 in the same manner as the lead portion 80 and the application electrode 30 (see FIG. 26). An insulating part 700, which is a coating made of silicon resin, covers the sensing electrodes 801 and 802, the lead part 80, and the application electrode 30 all together.

  As shown in FIG. 27, in a cross section perpendicular to the base material 33 and intersecting with the lead portion 38 in the extending direction, the sensing electrode 801 includes the lead portion 38 and one outer edge 701 of the insulating portion 700. Located between. Further, the sensing electrode 802 is located between the lead portion 38 and the other outer edge 702 of the insulating portion 700.

  According to the voltage application device 1 of this example, for example, in the cut portion 170 shown in FIG. 27, the outer edge 701 of the sheet-like insulating portion 700 (in this example, the deepest portion 170a of the cut portion 170) or the outer edge 702 (that is, In this example, when the insulating part 700 and the base material 33 are cracked from the deepest part 175 a) of the cut part 175 toward the lead part 38, the crack is detected before the sensing electrode 801 reaches the lead part 38. , 802 and the sensing electrodes 801 and 802 are exposed by the crack, and the insulation of the insulating portion 700 is lowered. Therefore, the control unit 40 can detect a decrease in the insulation of the insulating unit 700 via the sensing electrodes 801 and 802 before the insulation of the lead unit 38 is impaired. Similarly, in the lead part 39 shown in FIG. 26, before the insulation property is impaired, a decrease in insulation property of the insulation part 700 can be sensed through the sensing electrodes 801 and 802.

In this example, as shown in FIG. 27, the lead portion 38 is located between the two sensing electrodes 801 and 802 in a cross section perpendicular to the base material 33 and intersecting the lead portion 38. As a result, a crack is generated from either of the outer edges 701 and 702 (the deepest portions 170a and 175a in this example) of the insulating portion 700 in a direction parallel to the base material 33 in a cross section perpendicular to the base material 33 toward the lead portion 38. Even if the control unit 40 enters, the control unit 40 can detect a decrease in the insulating property of the insulating unit 700 through the sensing electrode 80 before the insulating property of the lead unit 38 is impaired. The two sensing electrodes 801 and 802 may be formed by branching two sensing electrodes having the same potential.
In addition, about the structure which is common in Example 1, 2, there exists an equivalent effect in this example.

  In this example, the lead portions 38 and 39 and the sensing electrodes 801 and 802 are formed by printing on the sheet-like base material 33. However, the present invention is not limited thereto, and as a modification, the lead portions 38 and 39 are conductive wires. In addition, the sensing electrode 800 may be provided in an insulating portion that holds the lead portions 38 and 39 collectively. Also in this case, in the same way as in this example, when a crack or the like occurs from the end or edge of the insulating part, the insulating part is insulated via the sensing electrodes 801 and 802 before the insulation of the lead parts 38 and 39 is impaired. It is possible to sense a decrease in insulation of the part. In addition, the structure of the said insulation part is not specifically limited, For example, in order to make the application electrode 30 contact the human body 2, it can be set as the belt-shaped member which can be wound around the trunk | drum part, limbs, etc. of the human body 2. FIG. In addition, as the material of the insulating portion, a known material having insulating properties can be appropriately adopted. For example, a strip-like cloth having insulating properties is used as an insulating portion, and a wire-like lead portion is assembled to the cloth and sensed. An electrode may be assembled, and the lead portion and the sensing electrode may be covered with the cloth.

  In the first to third embodiments, the voltage application device 1 is a muscle electrical stimulation device that applies electrical stimulation to muscles. However, the present invention is not limited to this, and the electrical information of the human body 2 is measured by passing an electric current through the human body 2. It can also be a body composition meter. For example, the voltage application device 1 may be a body composition meter that can measure at least one of pulse, heartbeat, blood pressure, blood flow rate, body fat percentage, and the like. Further, the voltage application device 1 may be a wearable terminal device such as a smart watch that is a wristwatch having a function as a body composition meter, or a smart glasses that is glasses having a function as a body composition meter. Even in these cases, the control unit can detect a decrease in the insulating property of the insulating unit, and the same effects as those of the first to third embodiments can be obtained.

  The present invention is not limited to the above embodiments, and can be applied to various embodiments without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 1 Voltage application apparatus 10 Main-body part 20 Power supply part 30 Application electrode 33 Base material 38, 39, 381, 391 Lead part 40 Control part 40a Ground terminal 401 Target voltage value setting part 403 Applied frequency setting part 404 Boosting part 406 Applied voltage acquisition part 407 Reference value storage unit 408 Reference value extraction unit 409 Comparison unit 410 Determination unit 70, 700 Insulation unit 71 First insulation layer 72 Second insulation layer 80, 801, 802 Sensing electrode

Claims (8)

A voltage applying device for applying a voltage to a human body in order to apply electrical stimulation to the human body or to acquire electrical information of the human body,
The main body,
A control unit housed in the main body,
A power supply unit housed in the main body unit and connected to the control unit;
An application electrode configured to output an applied voltage applied to the human body;
A lead part electrically connecting the application electrode and the control part;
A sensing electrode connected to the ground terminal of the control unit;
An insulating part that covers the lead part and the sensing electrode and insulates the lead part and the sensing electrode from the outside;
With
The voltage application device, wherein the control unit is configured to detect that the sensing electrode is energized with the human body or the application electrode, and sense that the insulating property of the insulating unit is reduced. The control unit includes a target voltage setting unit that sets a target voltage value of the applied voltage,
An applied voltage acquisition unit for acquiring a voltage value of the applied voltage output from the application electrode;
A comparison unit that compares the target voltage value set by the target voltage setting unit with the acquired voltage value acquired by the applied voltage acquisition unit;
A determination unit that determines that the insulating property of the insulating unit has deteriorated when the comparison result of the comparing unit indicates that the ratio of the acquired voltage value to the target voltage value is equal to or less than a predetermined value;
The voltage application apparatus according to claim 1, comprising: The control unit includes an application frequency setting unit that sets an application frequency of the application voltage,
A reference value storage unit in which a reference value of the ratio of the acquired voltage value to the target voltage value is stored in advance in association with each set frequency set by the applied frequency setting unit;
A reference value extraction unit that extracts the reference value from the reference value storage unit based on the set frequency,
The said determination part determines with the insulation of the said insulation part having fallen, when the ratio of the said acquired voltage value with respect to the said target voltage value is below the reference value extracted by the said reference value extraction part. The voltage application apparatus described in 1.   The voltage application apparatus according to claim 3, wherein in the reference value storage unit, a higher reference value is associated with an increase in the set frequency.   The voltage application apparatus according to any one of claims 1 to 4, wherein the control unit is configured to stop or reduce the output of the power supply unit when detecting the decrease in insulation. The control unit includes a boosting unit that boosts the output voltage output from the power supply unit to the application electrode to the target voltage value,
When the target voltage value is less than a predetermined threshold, the boosting unit performs a boosting operation for boosting the output voltage to the target voltage value for each application cycle corresponding to the applied frequency, and the target voltage value is 4. The voltage application according to claim 3, wherein when the threshold voltage is equal to or higher than a predetermined threshold value, the voltage application is configured to boost the output voltage to the target voltage value over a predetermined period from the start of application of the applied voltage. apparatus. Having a sheet-like base material extended from the main body,
The application electrode and the lead portion are formed on the surface of the base material,
The insulating part has a first insulating layer laminated on the base material so as to cover the lead part, and a second insulating layer laminated on the first insulating layer,
The sensing electrode is provided between the first insulating layer and the second insulating layer;
The voltage application apparatus as described in any one of Claims 1-6.   The voltage application device according to claim 7, wherein the sensing electrode is formed at a position overlapping the lead portion in a stacking direction of the first insulating layer and the second insulating layer.

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