JP2008018148A - Heart rate meter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a finger-mounted heart rate meter which gives a user good mounting feeling, has the increased flexibility of the design and enables the user to measure and check a hear rate while doing exercises. <P>SOLUTION: The heart rate meter 1 is provided with a fitting part 2 which has a main opening part 9 through which an index finger is put and a main body part 3 which has a function to display a result of measuring the heart rate near the root of an index finger which is put through the main opening part 9. The fitting part 2 has a containing part 5 and a cover body part 6 fitted turnably to the containing part. The containing part 5 is provided with a first opening part having a center at a position deviating from a turning axis of the cover body 6. The cover body 6 is provided with a second opening part which has its center at a position deviating from the turning axis of the cover body 6. By turning the cover body part 6 around the turning axis, an amount of overlap of the first opening part 11 and second opening part 12 changes, size of the main opening part 9 changes accordingly, and the heart rate meter can be fitted to the index finger whether the index finger is thick or thin. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heart rate monitor that is attached to a part of a living body, for example, a finger and measures a heart rate.

  2. Description of the Related Art Conventionally, an apparatus for measuring heart rate and blood pressure based on a change in light transmittance due to blood flow at the fingertip or base of a finger has been proposed. For example, a sensor for detecting a finger vein near the root of the leaf spring by attaching the leaf spring root formed by extending a tongue piece further inwardly bent to the tip of a substantially U-shaped bent plate. There is known a heart rate monitor characterized by having attached (for example, see Patent Document 1).

  And a light emitting element and a light receiving element provided on an inner peripheral surface side of the mounting part, wherein the light emitting element emits light emitted toward the finger. A biological signal detection device that detects a biological signal by receiving light at a ring-type, characterized in that it is provided with an adjustment mechanism that reduces the overall diameter of the inner peripheral surface of the mounting portion. A biological signal detection device is known (see, for example, Patent Document 2). Further, in a pulse measuring device provided with a pulse sensor mounting band for fixing the pulse sensor to a state in which the pulse sensor can be sandwiched between the finger of the hand and the finger of the hand by being wrapped around the finger of the subject's hand. A pulse measuring device is known in which the pulse sensor mounting band is configured such that a tightening force at a position closer to the fingertip than a position where the pulse sensor is fixed can be adjusted to a specific range. (For example, refer to Patent Document 3).

  In addition, a pair of sandwiching members are arranged above and below, and a light emitting element and a light receiving element are provided opposite to each other on the opposing surfaces of the sandwiching members, and the pair of sandwiching members are pressures that can adjust the contact pressure to the blood flow detection object. A blood flow signal detecting device characterized by being connected via an adjusting screw and a spring is known (for example, see Patent Document 4). A sphygmomanometer body that forms a finger insertion hole on a side surface; a cuff that is arranged in a crescent shape along a peripheral wall of the finger insertion hole; and a slide that is slid to the upper side of the sphygmomanometer body, A slide knob that adjusts the winding force around the finger, and a fastening belt that is interposed between the slide knob and the finger cuff and reads the winding of the finger cuff around the finger by the movement of the slide knob. A finger sphygmomanometer that moves a slide knob before pressurization and winds a finger cuff around a finger, wherein the tightening belt is wound once along the inner and outer walls of a cylinder that forms the finger insertion hole. A finger sphygmomanometer is known which is arranged in a spiral shape more than half (see, for example, Patent Document 5).

JP-A-57-142239 JP-A-11-332840 JP 2006-87516 A Japanese Utility Model Publication No. 60-86302 JP-A-5-129

  However, the heart rate monitor disclosed in Patent Document 1 has a configuration in which a fingertip is sandwiched from above and below by a base and a tongue piece of a leaf spring made of a substantially U-shaped curved plate. Therefore, there is a problem that there is a feeling of pressure and a feeling of wearing is bad. Moreover, since it is about the size of a palm, there is a problem that it is not suitable for the purpose of measuring a heartbeat while exercising. In addition, there is a problem in that the degree of freedom in design is poor because the fingertip must be inserted between the base of the leaf spring and the tongue piece while supporting the heart rate monitor with four fingers excluding the index finger. There is a point.

  The biological signal detection device disclosed in Patent Document 2 is attached to a finger only by tightening the finger with an annular attachment portion. Therefore, there is a problem that the stability of the sensor main body is poor at the time of mounting. Therefore, there is a problem that it is not suitable for measuring biological signals while exercising.

  The pulse measuring device disclosed in Patent Document 3 is configured to obtain an appropriate tightening force by winding the pulse sensor mounting band around a finger while pulling it. It is not easy to actually perform the operation of winding the band around the finger of the other hand while pulling the band with one hand. That is, there is a problem that the wearability is poor. Moreover, since it is a simple band provided with a double-sided fastener, there is a problem that the degree of freedom in design is poor.

  The blood flow signal detection device disclosed in Patent Document 4 has a configuration in which a fingertip is sandwiched from above and below by a pair of clamping members, and thus there is a problem that there is a feeling of pressure and a feeling of wearing is poor. In addition, there is a problem in that the degree of freedom in design is poor because a lever is provided to increase the distance between the pair of clamping members.

  Moreover, since neither of the above-mentioned patent documents 3 and 4 is provided with a mechanism for displaying the measurement result, the pulse is measured while exercising, and the exercise load is adjusted while checking the measurement result. There is a problem that it is not suitable for use. When the display device for integrally displaying the measurement result is used, depending on the size and weight of the display device, the tightening force due to the tension of the band (in the case of Patent Document 3) or the elastic restoring force of the spring ( In the case of Patent Document 4, it is not sufficient, and there is a problem that the display device cannot be supported stably.

  Since the finger sphygmomanometer disclosed in Patent Document 5 incorporates an electric pump for supplying air to the finger cuff, its size is approximately the size of the palm. Therefore, when such a configuration having a finger cuff and an electric pump is applied to a device for measuring a heart rate, there is a problem that it is not suitable for use in measuring a heart rate while exercising.

  An object of the present invention is to provide a heart rate monitor of a type that can be worn on a finger, for example, having a good wearing feeling and a high degree of design freedom in order to eliminate the above-described problems caused by the prior art. Another object of the present invention is to provide a heart rate monitor that can measure a heart rate while exercising by wearing it on a finger and confirming the measurement result.

  In order to solve the above-described problems and achieve the object, the heart rate monitor according to the invention of claim 1 has a mounting portion, and a heart rate for measuring a heart rate of the living body by mounting the mounting portion on a part of the living body. In the meter, the mounting portion is composed of a housing portion and a lid body portion that is pivotably stacked on the housing portion around a rotation shaft, and the housing portion is provided with a first opening, The lid portion is provided with a second opening, and the first opening and the second opening are arranged around the rotation axis with respect to the housing portion. It is characterized in that the amount of overlap between the first opening and the second opening is changed by turning.

  According to the first aspect of the present invention, since the size of the main opening of the mounting portion is changed by turning the lid portion around the rotation axis, the mounted portion on which the heart rate monitor is mounted is thick. A heart rate monitor can be worn even if it is thin. Moreover, as long as the part to be attached to the living body can be passed through the main opening, any other shape, material, etc. can be used, so that the degree of freedom in design is high.

  The heart rate monitor according to a second aspect of the present invention is the heartbeat monitor according to the first aspect, wherein the first opening has a center at a position eccentric from the rotation center of the accommodating portion, The second opening has a center at a position eccentric from the rotation center of the lid body. According to the second aspect of the present invention, the amount of overlap between the first opening and the second opening is changed by turning the lid body around the rotation axis.

  According to a third aspect of the present invention, there is provided a heart rate monitor according to the first or second aspect of the present invention, wherein the housing portion is integrated with the lid body portion as the lid body portion rotates. A moving internal drum portion is provided. According to the third aspect of the present invention, the inner drum portion is in surface contact with the mounted portion of the living body, so that the feeling of mounting is excellent.

  According to a fourth aspect of the present invention, there is provided a heart rate monitor according to the third aspect, wherein the internal drum portion is provided with a rib. According to the fourth aspect of the present invention, the rib increases the frictional resistance between the living body wearing portion and the contact surface of the internal drum portion. It is possible to prevent the meter from turning.

  In addition, in the heart rate monitor according to the invention of claim 5, in the invention according to any one of claims 1 to 4, the lid body portion has a protruding portion to put a finger on when turning the lid body portion. It is provided. According to the fifth aspect of the present invention, the lid portion and the internal drum portion can be easily rotated by placing a finger on the protrusion.

  According to a sixth aspect of the present invention, there is provided a heart rate monitor according to any one of the first to fifth aspects, wherein a body portion having a function of displaying a measured heart rate is integrated with the mounting portion. It is attached. According to the invention of claim 6, the measured heart rate is displayed, and the wearer can confirm the display.

  Further, the heart rate monitor according to the invention of claim 7 is the heartbeat monitor according to claim 6, wherein the main body portion is projected to the back side and middle finger side of the index finger when attached to the base of the index finger. It has a ledge that can be supported by the bone of the joint at the base. According to the seventh aspect of the present invention, since the protruding portion is supported by the bones of the joints at the bases of the index finger and the middle finger from the back side at the time of mounting, the main body portion is stabilized at the time of mounting. Further, since the protruding portion is supported by the joint bone at the base of the middle finger when the lid portion is rotated, it is possible to prevent the heart rate monitor from rotating together with the lid portion.

  Further, the heart rate monitor according to the invention of claim 8 is worn according to the invention of claim 7, when the measurement result of the heart rate is in a state where the fingertip of the hand on the wearing side is directed obliquely forward in front of the body. It is displayed on the main body so as to face the person. According to the eighth aspect of the present invention, when exercising such as jogging or walking, the wearing of the living body is performed in a state where the arm is swung naturally without unnaturally changing the swing direction of the arm. When the line of sight is directed to the part, the number is displayed in a state of facing the wearer in the display window part of the main body part, so that the visibility is excellent.

  The heart rate monitor according to the present invention has an effect that the feeling of wearing is good and the degree of freedom in design is high. In addition, there is an effect that the heart rate is measured while exercising and the measurement result can be confirmed.

  Exemplary embodiments of a heart rate monitor according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is an external view showing an example of wearing a heart rate monitor according to an embodiment of the present invention. As shown in FIG. 1, the heart rate monitor 1 is used by being worn near the base of the index finger F1 of the left hand H, for example. The heart rate monitor 1 has a configuration in which an annular mounting portion 2 through which the index finger F1 is passed and a main body portion 3 having an arithmetic device and a display device are integrated. The arithmetic unit obtains the heart rate, calorie consumption, and the like based on the detection signal of the heart rate sensor not shown in the figure. The display device displays the heart rate and the like. In the illustrated example, the display window on the front side of the main body 3 displays the heart rate, the elapsed time by the stopwatch function (or the remaining time by the countdown timer function), and the percentage of calories consumed relative to the set value.

  The main body 3 is provided so as to protrude to the back side of the hand and the middle finger F2 side when it is mounted on the index finger F1 by the mounting unit 2. The main body 3 has a predetermined lateral direction C-C of the main body 3 with respect to the direction AA (direction perpendicular to the direction BB in which the index finger F1 extends) across the index finger F1 passing through the mounting portion 2. It is provided on the mounting portion 2 so as to be inclined at an angle θ. Here, when the heart rate monitor 1 is attached to the index finger F1 of an average physique, the angle θ is determined by the joint bones at the bases of the index finger F1 and the middle finger F2 of the main body part 3, the back side and the middle finger of the body part 3, respectively. The angle just hits the back side of the protruding portion 4 toward the F2 side.

  2 and 3 are a perspective view and a front view, respectively, showing the state when the main opening through which the index finger of the heart rate monitor according to the embodiment of the present invention is passed is most closed. 4 and 5 are a perspective view and a front view, respectively, showing a state when the main opening through which the index finger of the heart rate monitor according to the embodiment of the present invention is passed is opened most.

  As shown in FIGS. 2 to 5, the mounting portion 2 includes a substantially cylindrical housing portion 5 that is formed integrally with or integrally with the main body portion 3, and a substantially pivotally attached to the front surface of the housing portion 5. Fixed to the front surface of the housing portion 5 between the annular lid body portion 6, the internal drum portion 7 housed in the housing portion 5 and moved together with the lid body portion 6, and the housing portion 5 and the lid body portion 6. A substantially crescent-shaped inner panel 8 is provided. As shown by white circles in FIGS. 3 and 5, the rotation axis GG of the lid 6 is parallel to the direction in which the index finger F <b> 1 extends when worn and passes through the center of the housing 5. The inner panel 8 is hidden behind the lid 6 in FIGS. 4 and 5 and is not visible.

  The mounting portion 2 has a main opening 9 for passing the index finger F1. The size of the main opening 9 is increased or decreased by turning the lid 6 about the rotation axis GG. For example, the main opening 9 of the mounting portion 2 is enlarged by rotating the lid portion 6 clockwise around the rotation axis GG as viewed from the lid portion 6 side, that is, the fingertip side during mounting. . The lid part 6 is provided with a protrusion 10 for putting a finger on it when turning. For example, the lid portion 6 and the internal drum portion 7 are biased by a spring or the like so that the main opening 9 is returned to the most closed state. Or you may become a structure which stops at the position which the cover body part 6 rotated only the arbitrary angles by the ratchet mechanism etc.

  FIG. 6 is a perspective view showing a state in which the internal panel is attached to the housing portion in the heart rate monitor according to the embodiment of the present invention. As shown in FIG. 6, in the accommodating portion 5 of the mounting portion 2, a substantially circular shape partially indicated by a virtual line (two-dot chain line) by the lower half of the accommodating portion 5 and the lower edge of the internal panel 8. The first opening 11 is formed. The size of the first opening 11 is slightly larger than the assumed thickness of the index finger F1. Since the inner panel 8 has a substantially crescent shape, the axis DD passing through the center of the first opening 11 is mounted from the axis passing through the center of the housing 5, that is, the rotation axis GG of the lid 6. It is shifted to the middle finger F2 side.

  FIG. 7 is a perspective view showing a state in which the internal drum portion is attached to the lid body portion in the heart rate monitor according to the embodiment of the present invention. As shown in FIG. 7, the lid portion 6 of the mounting portion 2 has a substantially circular second opening portion 12 partially indicated by a hidden line (broken line). The size of the second opening 12 is the same as the size of the first opening 11. An axis EE passing through the center of the second opening 12 is deviated from the rotation axis GG of the lid 6.

  An axis passing through the center of the second opening 12 by turning the lid 6 around the rotation axis GG in a state where the housing 5, the internal drum 7, the internal panel 8, and the lid 6 are assembled. By changing the deviation of the axis DD passing through the center of EE and the first opening 11, the amount of overlap between the first opening 11 and the second opening 12 changes, as described above. The size of the main opening 9 of the mounting portion 2 changes. The state shown in FIG. 5 is when the axis EE coincides with the axis DD. The state shown in FIG. 3 is when the axis EE and the axis DD are shifted most. In FIGS. 3 and 5, the axis DD and the axis EE are indicated by dots.

  The internal drum portion 7 is made of a cushion material such as foamed urethane rubber. The contact surface 13 of the inner drum portion 7 that comes into surface contact with the index finger F1 is bent along a part of the edge of the second opening portion 12 so that the cross-sectional shape thereof is substantially crescent. The contact surface 13 is provided with a convex rib 14 for increasing the frictional resistance with the index finger F1. Further, the internal drum portion 7 is provided with a window portion 15 through which light for detecting a heartbeat is detected by a heartbeat sensor (not shown). The heart rate sensor is mounted on the back side of the internal drum portion 7 so as to face the window portion 15.

  The lid portion 6 has a support portion 16 that protrudes into the housing portion 5. The support portion 16 has a substantially arc-shaped cross-sectional shape and supports the internal drum portion 7. The support portion 16 includes a retaining groove 17 for preventing the lid body portion 6 attached to the housing portion 5 from falling off the housing portion 5 and a groove 18 for passing a signal line extending from the heart rate sensor. Is provided. The configuration for preventing the lid body portion 6 from falling off from the housing portion 5 will be described later. Further, between the lid part 6 and the internal drum part 7, when the lid part 6 is rotated in order to enlarge the main opening 9 of the mounting part 2, the internal panel 8 is connected to the lid part 6 and the internal drum part. A notch 19 is provided to avoid interference with 7.

  FIG. 8 is a perspective view showing a state in which the internal drum portion and the internal panel are attached to the housing portion in the heart rate monitor according to the embodiment of the present invention. As shown in FIG. 8, the internal drum portion 7 is located on the thumb side at the time of mounting when the main opening 9 of the mounting portion 2 is in the most open state (see also FIGS. 4 and 5) and is most closed. It is located below the thumb when worn (see also FIGS. 2 and 3). In any case, the internal drum portion 7 does not come to the middle finger side when worn. The thin portion of the mounting portion 2 is always located on the middle finger side when the device is mounted.

  Further, the inner panel 8 is attached to the accommodating portion 5 by, for example, a screw member not shown. In FIG. 8, reference numeral 20 denotes a screw hole through which a screw member for attaching the inner panel 8 is passed.

  FIG. 9 and FIG. 10 are cross-sectional views showing the cross-sectional configuration of the mounting portion when the main opening through which the index finger of the heart rate monitor according to the embodiment of the present invention passes is most closed and when it is most opened. As shown in FIG. 9 and FIG. 10, the movement range of the internal drum portion 7 is a first range in which the tip 21 of the internal drum portion 7 is provided at one end of the bulging portion 22 from which the accommodating portion 5 bulges. 9 to the position where the rear end 24 of the internal drum portion 7 abuts against the second step portion 25 provided at the other end of the bulging portion 22 (FIG. 10).

  The structure which prevents the cover part 6 from falling off from the accommodating part 5 is as follows. 11 to 13 are exploded perspective views of the heart rate monitor according to the embodiment of the present invention as seen from different angles. As shown in these drawings, the retaining groove 17 is provided on the surface of the support portion 16 of the lid portion 6 that faces the inner surface of the housing portion 5. The housing part 5 is provided with a through hole 26.

  The internal drum portion 7, the heart rate sensor 27 and the internal panel 8 are attached to the storage portion 5, and the pin 6 is put on the through hole 26 of the storage portion 5 from the outside of the storage portion 5 with the lid body 6 covered. 28 is driven. The tip of the retaining pin 28 protrudes inside the housing part 5 and enters the retaining groove 17 of the lid body part 6. As a result, the lid 6 cannot be removed from the housing 5. In FIG. 12 and FIG. 13, the heart rate sensor 27 and the retaining pin 28 are omitted.

  In addition, as shown in FIG. 12, operation buttons and the like are provided on the side surface of the main body 3. The start / stop button 29 is positioned on the thumb side of the base of the index finger F1 when worn (see FIG. 1). This position is a position that can be easily found by groping without being visually recognized by the wearer, and is the position that is most easily pressed. At the time of wearing, a lid 30 of the battery storage unit is provided at the base position of the middle finger F2 (see FIG. 1). Between the start / stop button 29 and the lid 30 of the battery storage unit, there are provided a select button 31 for selecting an operation mode and a set button 32 for performing various settings.

  As described above, according to the embodiment, the size of the main opening 9 of the mounting portion 2 is changed by turning the lid portion 6 about the rotation axis GG, so that the index finger F1 is thick. The heart rate monitor 1 can be worn even if it is thin. When turning the lid part 6, the lid part 6 and the internal drum part 7 can be easily turned by placing a finger on the protrusion 10 of the lid part 6. At this time, since the protruding portion 4 of the main body 3 is supported by the joint bone at the base of the middle finger F <b> 2, it is possible to prevent the heart rate monitor 1 from rotating together with the lid body 6. Therefore, it can be easily worn regardless of the thickness of the index finger F1.

  In addition, according to the embodiment, the inner drum portion 7 having cushioning properties is in surface contact with the index finger F1, so that the feeling of wearing is excellent. Moreover, even if the index finger F1 is thick or thin, the portion without the internal drum portion 7 of the mounting portion 2, that is, the thin portion is positioned on the middle finger side when mounting, so that the mounting feeling is excellent. Further, according to the embodiment, as long as the index finger F1 can be passed through the main opening 9 of the mounting portion 2, any other shape, material, etc. can be used, so that the degree of freedom in design is high.

  Furthermore, according to the embodiment, when the heart rate monitor 1 is attached to the index finger F1, the protruding portion 4 of the main body part 3 toward the back side of the hand and the middle finger F2 side has the index finger F1 and the middle finger F2 from the back side. Therefore, when the heart rate monitor 1 is worn, the main body 3 is stabilized. Further, the rib 14 of the internal drum portion 7 increases the frictional resistance between the index finger F1 and the contact surface 13 of the internal drum portion 7, so that the heart rate monitor 1 is rotated when the heart rate monitor 1 is properly attached to the index finger F1. Can be prevented. Therefore, it is suitable for the purpose of measuring the heart rate while exercising.

  Furthermore, according to the embodiment, when exercising such as jogging or walking, the index finger F1 of the left hand can be used with the arm swinging naturally without changing the direction of swinging the arm unnaturally. When the line of sight is directed near the base of the body, the number is displayed on the display window of the main body 3 in a state of facing the wearer, so that the visibility is excellent. Therefore, the heart rate can be measured while exercising, and the measurement result can be easily confirmed.

  As described above, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the configuration is not limited to the above-described configuration as long as the size of the main opening 9 of the mounting portion 2 is changed by rotating the lid portion 6. The above-described example is of the type that is worn on the left index finger F1, but a heart rate monitor that is worn on the right index finger can be obtained by reversing the left and right of each component.

  As described above, the heart rate monitor according to the present invention is useful for a portable heart rate monitor, and is particularly suitable for a heart rate monitor that measures a heart rate while jogging, walking, or performing other exercises.

It is an external view which shows the example of mounting | wearing of the heart rate monitor concerning embodiment of this invention. It is a perspective view which shows a state when the main opening part of the heart rate monitor concerning embodiment of this invention is closed most. It is a front view which shows a state when the main opening part of the heart rate monitor concerning embodiment of this invention is closed most. It is a perspective view which shows a state when the main opening part of the heart rate monitor concerning embodiment of this invention is opened most. It is a front view which shows a state when the main opening part of the heart rate monitor concerning embodiment of this invention is opened most. It is a perspective view which shows the state which attached the internal panel to the accommodating part of the heart rate monitor concerning embodiment of this invention. It is a perspective view which shows the state which attached the internal drum part to the cover body part of the heart rate monitor concerning embodiment of this invention. It is a perspective view which shows the state which attached the internal drum part and the internal panel to the accommodating part of the heart rate monitor concerning embodiment of this invention. It is sectional drawing which shows the cross-sectional structure of a mounting part when the main opening part of the heart rate monitor concerning embodiment of this invention is most closed. It is sectional drawing which shows the cross-sectional structure of a mounting part when the main opening part of the heart rate monitor concerning embodiment of this invention is opened most. 1 is an exploded perspective view showing a heart rate monitor according to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing a heart rate monitor according to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing a heart rate monitor according to an embodiment of the present invention. FIG.

Explanation of symbols

D axis passing through the center of the first opening E axis passing through the center of the second opening G rotating shaft F1 index finger F2 middle finger 1 heart rate monitor 2 mounting part 3 main body part 4 protruding part 5 accommodating part 6 lid part 7 Internal drum portion 9 Main opening portion 10 Projection portion 11 First opening portion 12 Second opening portion 13 Contact surface with index finger 14 Rib

Claims (8)

In a heart rate monitor that has a mounting part and measures the heartbeat of a living body by mounting the mounting part on a part of the living body,
The mounting portion is composed of a housing portion and a lid body portion that is overlapped with the housing portion so as to be rotatable around a rotation axis.
The accommodating portion is provided with a first opening,
The lid portion is provided with a second opening,
The first opening and the second opening are formed by turning the lid portion around the rotation shaft with respect to the housing portion. A heart rate monitor characterized by being provided so that the amount of overlap varies. The first opening has a center at a position eccentric from the rotation center of the accommodating portion,
The heart rate monitor according to claim 1, wherein the second opening has a center at a position eccentric from the rotation center of the lid.   3. The heartbeat according to claim 1, wherein an inner drum portion that moves integrally with the lid body portion as the lid body portion rotates is provided inside the housing portion. Total.   The heart rate monitor according to claim 3, wherein a rib is provided on the internal drum portion.   The heart rate monitor according to any one of claims 1 to 4, wherein the lid body portion is provided with a projection portion to which a finger is put when the lid body portion is rotated.   The heart rate monitor according to claim 1, wherein a body portion having a function of displaying a measured heart rate is integrally attached to the wearing portion.   The said main-body part has a protruding part which protrudes to the back side and middle finger side of the hand when attached to the base of the index finger and can be supported by the bones of joints at the base of the index finger and the middle finger, respectively. Heart rate monitor as described in. The measurement result of the heartbeat is displayed on the main body so as to face the wearer when the fingertip of the hand on the wearing side is directed obliquely forward in front of the body. Item 8. The heart rate monitor according to Item 7.

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