CN104203148A - Electric toothbrush - Google Patents

Abstract

Provided is an economical electric toothbrush that can reliably vibrate a head part while ensuring teeth-cleaning operability in the mouth, and in which a smaller size and lighter weight are achieved, and portability is improved. This electric toothbrush (10) comprises a head part (13), a neck part (12), and an operating part (11), wherein the head part (13) has a coin-shaped vibrating motor (17) on the bottom surface side of the head part, and a detachable brush plate (22) on the upper surface side of the head part; a battery and switch part are stored in the operating part (11); and the toothbrush is vibrated by the vibrating motor that is operated by electricity supplied from the battery.

Description

electric toothbrush

technical field

The present invention relates to an electric toothbrush excellent in portability.

This application claims priority based on Japanese Patent Application No. 2012-068043 for which it applied in Japan on March 23, 2012, and uses the content here.

Background technique

In recent years, not only in the home, but also in places such as workplaces or places of travel, there are many cases where teeth are brushed. Therefore, portability is required for the toothbrush, but in the case of an electric toothbrush, the problem of poor portability arises due to the overall size increase.

As electric toothbrushes, there are known a rotary type in which a head with a plurality of brushes is attached and rotates, and a vibration type in which a head with a plurality of brushes is attached and vibrates. The vibration type uses the eccentric hammer on the output shaft of the motor to vibrate the whole brush. Since there are fewer structural parts, the overall size of the electric toothbrush can be miniaturized compared with the rotary type.

As a vibrating electric toothbrush, for example, there is an electric toothbrush 1 shown in FIG. 6 .

The electric toothbrush 1 has: an operation part 2 for the user to hold and operate; a neck 3 mounted on the operation part 2;

In the inside of the operation part 2, there are, for example: a power supply 5 such as a No. 7 battery; a motor 6 driven by the power supply of the power supply 5; an eccentric weight 7 mounted on the output shaft 6a of the motor 6; The switch 8 and the like to be turned on/off are driven. The motor 6 and the eccentric weight 7 constitute a vibration generating mechanism that imparts vibration to the head 4 through the neck 3 .

The neck 3 and the head 4 are integrated, and the neck 3 is detachable from the operation part 2 .

In this way, since the electric toothbrush must be equipped with at least a motor such as a motor and a power source such as a battery on the operating part, it is still not enough in terms of miniaturization, and there is a problem that it is inconvenient to carry.

Therefore, various proposals have been made in order to provide a small and portable electric toothbrush. For example, it is typical to store the two toothbrush bodies together with the operation part in the state where the two toothbrush bodies in which the head and the neck of the brush are integrated are removed from the operation part having the driving part and the like. An electric toothbrush in one case (Patent Document 1); an electric toothbrush in which a cylindrical toothbrush case is used to cover a toothbrush body mounted on an operation part (Patent Document 2); and a motor is placed at the base of the neck to achieve miniaturization electric toothbrush (Patent Documents 3, 4) and the like.

Alternatively, there have been proposed electric toothbrushes in which a so-called linear motor is embedded in the head (Patent Documents 5 and 6), or electric toothbrushes in which a replacement part includes a drive unit and a brush unit (Patent Document 7).

Patent Document 1: Japanese Patent Laid-Open No. 8-80220

Patent Document 2: Japanese Patent No. 4681079

Patent Document 3: Japanese Patent Laid-Open No. 2003-93415

Patent Document 4: Japanese Patent No. 4748267

Patent Document 5: Japanese Patent Laid-Open No. 2009-106355

Patent Document 6: Japanese Patent Laid-Open No. 2009-45202

Patent Document 7: Japanese Patent Laid-Open No. 2011-143057

The problem to be solved by the invention

However, for example, for the electric toothbrush described in Patent Document 1 that stores two toothbrush bodies together with the operating part in a box, the toothbrush body must be installed on the drive shaft of the operating part when it must be used, and the drive shaft will be driven from the drive shaft when not in use. Take off the toothbrush body, can produce the problem that assembly and disassembly operations are loaded down with trivial details. And, in the lavatory etc. of the limited narrow space of workplace, during the period of brushing teeth, also produce such problem: worry about the placement place of the box that accommodates another toothbrush body.

For Patent Document 2, which uses a toothbrush case to cover the toothbrush body installed on the operation part, since the specific size relationship is not clearly stated, the actual size is estimated, at least the overall size is the same as the family size without considering the portability It is roughly the same, but it has not been made into a structure that enhances portability.

In Patent Documents 3 and 4, in which the motor is placed at the base of the neck to achieve miniaturization, the base of the neck is extremely thick, and if the length of the tip of the neck is not ensured to a certain extent, the operability of the toothbrush will be hindered. The problem. And, as the technique disclosed in Patent Document 3, when the motor is fixed inside the neck part integrated with the brush body, when it is time to replace the toothbrush body due to the wear and tear of the toothbrush body, the neck part including the motor must be replaced. As a whole, there is a problem of high cost.

In addition, in Patent Document 5 in which a so-called drive unit (linear motor) is embedded in the head, it is difficult to reduce the size of the linear motor, so the head becomes large and heavy, and usability is impaired. In addition, with the linear motor, it is difficult to obtain a good cleaning effect only by vibrating the bristles of the brush in the direction in which they extend. In addition, since the linear motor consumes a lot of power, it is necessary to frequently replace the power supply or increase the power supply. If the power supply is enlarged, the operation unit cannot be miniaturized.

In addition, in Patent Document 6 in which a drive unit (linear motor) is mounted on the head, the head having the linear motor must be replaced together with the brush when replacing the brush, which is uneconomical.

In addition, in Patent Document 7, which has a drive unit (linear motor) mounted on the head, it is a specification in which a support body including a linear motor can be inserted into the hollow head, and it is a specification that can freely customize the head and the motor. electric toothbrush. However, since the support including the motor with the eccentric weight is inserted into the hollow brush head, the brush becomes thin and unstable in terms of strength. In order to ensure strength, it can also be thickened, but the neck becomes thicker and the operability in the oral cavity is poor.

As another means for downsizing the vibrating electric toothbrush, there are methods of shortening the neck and reducing the size of the battery (button battery, etc.). However, if only the neck is shortened, in order to reach the inner teeth, the neck must be put into the mouth until the rough operation part, and operability is impaired. In addition, in order to shorten the operation part, if the battery is used as a battery equivalent to a button battery, there will be problems such as insufficient motor torque, frequent replacement of the battery, and frequent charging.

Contents of the invention

Therefore, the object of the present invention is to provide an electric toothbrush that mounts a drive unit (coin-type vibrating motor) on the head and adopts a box type that can only replace the hair-planting part (hair-planting plate, bristles). This makes it possible to ensure the strength of the neck without discarding the driving part, and to provide excellent operability in the oral cavity. Another object of the present invention is to provide an electric toothbrush that is small in size and excellent in portability, and can reliably impart vibration to the head without impairing usability.

means to solve the problem

In order to achieve the above object, the first aspect of the electric toothbrush of the present invention is,

[1] An electric toothbrush consisting of a head, a neck, and an operating portion. The electric toothbrush is characterized in that a coin-type vibrating motor is provided on the bottom surface side of the head, and a coin-type vibration motor is provided on the upper surface side of the head. In the detachable hair-planting board, the operation unit accommodates a battery and a switch unit, and the toothbrush is vibrated by the coin-type vibration motor operated by power supply from the battery.

The electric toothbrush with such a structure can secure brushing operability in the oral cavity, can reliably vibrate the head, can realize miniaturization and weight reduction, can improve portability, and is economical.

Moreover, the 2nd aspect of the electric toothbrush of this invention is that

[2] The electric toothbrush according to [1], wherein a member for blocking vibration is interposed between the neck.

The electric toothbrush with such a structure can alleviate the vibration transmitted to the operation part, and can reduce the discomfort of the vibration transmitted to the hand of the user holding the operation part.

Moreover, the 3rd aspect of the electric toothbrush of this invention is that

[3] The electric toothbrush according to [1], which has a mechanism for extending the handle in a sliding/drawing/folding/cap-replacing manner during use of the electric toothbrush.

The electric toothbrush with such a structure can ensure operability in use, and can further improve compactness when not in use.

Moreover, the 4th aspect of the electric toothbrush of this invention is that

[4] The electric toothbrush according to [1], which has a vibration transmission part on the upper surface of the coin type vibration motor.

The electric toothbrush adopting such a structure can increase the number of vibrations, can set the directionality of the vibrations to be specific, and can change the amplitude, thereby improving the cleanliness in the oral cavity. As a member that increases the number of vibrations, for example, there is a member that combines fiber orientation of fiber-reinforced plastics and the like with the vibration direction of a coin motor. In addition, as a member that controls the directionality of vibration, there is a member that combines the fiber orientation of fiber-reinforced plastics and the like in a certain direction to amplify the vibration in the direction parallel to the fiber direction and attenuate the vibration in the perpendicular direction. . In addition, it is also possible to change the gain by giving weight.

The effect of the invention

The electric toothbrush of the present invention mounts the drive unit (coin-type vibrating motor) on the head, and adopts a cassette type in which only the hair-planting part (hair-planting plate, bristles) can be replaced, so that the driving part does not need to be discarded, and the neck can be secured. strength while providing excellent operability in the oral cavity. In addition, it is compact and excellent in portability without impairing usability, and can reliably impart vibration to the head.

Description of drawings

Fig. 1A shows an electric toothbrush according to one embodiment of the present invention, and is a cross-sectional view of the electric toothbrush.

Fig. 1B shows an electric toothbrush according to one embodiment of the present invention, and is a rear view of main parts of the electric toothbrush.

Fig. 1C shows an electric toothbrush according to an embodiment of the present invention, and is an enlarged view of a modified example of the cross-sectional view of the electric toothbrush head.

Fig. 1D shows an electric toothbrush according to an embodiment of the present invention, and is an enlarged view of a modified example of the cross-sectional view of the electric toothbrush head.

Fig. 1E shows an electric toothbrush according to one embodiment of the present invention, and is an enlarged view of a modified example of the cross-sectional view of the electric toothbrush head.

FIG. 1F shows an electric toothbrush according to an embodiment of the present invention, and is an enlarged view of a modified example of the cross-sectional view of the electric toothbrush head.

Fig. 1G shows an electric toothbrush according to an embodiment of the present invention, and is an enlarged view of a modified example of the cross-sectional view of the electric toothbrush head.

Fig. 2A shows Modification 1 of the electric toothbrush according to the embodiment of the present invention, and is a cross-sectional view of the electric toothbrush when it is not in use.

Fig. 2B shows Modification 1 of the electric toothbrush according to the embodiment of the present invention, and is a cross-sectional view of the electric toothbrush in use.

Fig. 3A shows Modification 2 of the electric toothbrush according to the embodiment of the present invention, and is a side view of the electric toothbrush when it is not in use.

Fig. 3B shows Modification 2 of the electric toothbrush according to the embodiment of the present invention, and is a side view of the electric toothbrush in use.

Fig. 4A shows Modification 3 of the electric toothbrush according to the embodiment of the present invention, and is a side view of the electric toothbrush when it is not in use.

Fig. 4B shows Modification 3 of the electric toothbrush according to the embodiment of the present invention, and is a side view of the electric toothbrush in use.

Fig. 5A shows Modification 4 of the electric toothbrush according to the embodiment of the present invention, and is a side view of the electric toothbrush when it is not in use.

Fig. 5B shows Modification 4 of the electric toothbrush according to the embodiment of the present invention, and is a side view of the electric toothbrush in use.

Fig. 6 is an explanatory diagram of a conventional electric toothbrush.

Symbol Description

10 electric toothbrushes

11 Operation Department

12 neck

12a Neck (root side)

12b Neck (top side)

13 head

13a base portion of head 13

13b convex portion of head 13d

13c The recess of the head 13e

13d head (upper surface side)

13e Head (bottom side)

14 handles

15 power supply

16 switch part

17 vibration motor

18 Wiring

19 Wiring

20 Vibration absorber (vibration absorber)

21 brushes

22 Hair planting board

23 liner

24 cover

90 Vibration Transmission Department

Detailed ways

Hereinafter, an electric toothbrush according to an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, the embodiments shown below are preferred specific examples of the electric toothbrush of the present invention, and sometimes have various limitations that are technically preferable, and the technical scope of the present invention shall not be limited unless the description of the present invention is specifically limited. It is limited to these embodiments. In addition, the constituent elements in the embodiments described below may be appropriately substituted with existing constituent elements, and various changes including combinations with other existing constituent elements may be made. Therefore, the content of the invention described in the claims should not be limited by the description of the embodiments described below.

1A to G show an electric toothbrush according to an embodiment of the present invention. FIG. 1A is a cross-sectional view of the electric toothbrush, FIG. 1B is a rear view of main parts, and FIGS. 1C to G are enlarged views of modifications of the head cross-sectional view.

Fig. 1C is that the vibration transmission part 90 is directly contacted with the vibration motor 17 using, for example, a known insert molding method, and the vibration transmission part 90 is convexly arranged on the head in such a way that the flocking plate 22 is pushed toward the brush 21 side. 13d on. Then, the head portion 13e is bonded. Since the vibration transmission part 90 is in contact with the motor 17, the vibration of the vibration motor can be efficiently transmitted. Moreover, the fitting strength of the head part 13d and the hair-planting board 22 can be ensured reliably.

Fig. 1 D is that the vibration transmission part 90 is arranged on the head 13d in such a way that the vibration transmission part 90 utilizes, for example, a known insertion method to directly contact the vibration motor 17. side prominence. Since the vibration transmission part 90 is in contact with the motor 17, the vibration of the vibration motor can be efficiently transmitted.

In the case of FIGS. 1C and 1D, except that the vibration transmission part 90 is provided in contact with the vibration motor 17 by a known insert molding method, the head with the vibration transmission part 90 may also be molded by a known insert molding method. After the part 13d, the vibrating motor 17 is housed in each concave part of the shaped head 13d and the head 13e and bonded by machine. In addition, in this case, after the head part 13e including the vibration motor 17 is molded by a known insert molding method, it may be adhered to the head part 13d including the vibration transmission part 90 .

FIG. 1E is a state in which the vibrating motor 17 is sandwiched between the head portion 13d and the head portion 13e and bonded so that moisture does not enter. The vibration transmitting part 90 may be preliminarily provided on the head part 13d by, for example, a known insert molding method. At this time, by protruding the vibration transmission part 90 so that the hair-planting plate 22 is pushed toward the brush 21 side, the vibration transmission part 90 can be efficiently transmitted, and the fitting of the head 13d and the hair-planting plate 22 can be efficiently transmitted. Strong and reliable.

FIG. 1F is a state in which the vibrating motor 17 is sandwiched between the head portion 13d and the head portion 13e and bonded so that moisture does not enter. The vibration transmission part 90 may be preliminarily provided on the head part 13d by, for example, a known insert molding method, and the vibration transmission part 90 may be provided so as not to protrude from the head part 13d toward the brush 21 side. Since the vibration transmission part 90 is close to the motor 17, the vibration of the vibration motor can be efficiently transmitted.

Fig. 1G is a state in which the vibrating motor 17 is sandwiched between the head portion 13d and the head portion 13e and bonded so that moisture does not enter. At this time, on the head 13d side of the vibration motor 17, the vibration of the vibration motor can be efficiently transmitted by providing a protruding convex portion (corresponding to a vibration transmission portion) to push the flocking plate 22 to the brush 21 side. , so that the fitting strength of the head 13d and the hair-planting plate 22 is reliable.

As shown in FIGS. 1A-G , an electric toothbrush 10 has: an operation part 11 for the user to hold and operate; a neck 12 mounted on the operation part 11 ;

The operating part 11 has: a cylindrical handle 14 made of resin; a battery disposed inside the handle 14, such as a replaceable No. 7 battery (also a No. 5 battery or No. 8 battery (Japanese single-type 5 battery)) or A power source 15 of a rechargeable battery; and a switch unit 16 for operating the drive of the power source 15 . In addition, when a rechargeable battery is used as the power supply 15, a known charging unit is provided at the rear end. Therefore, as described in the prior art, since the operation part 11 is not provided with a motor and an eccentric weight (including a transmission mechanism), it can contribute to the miniaturization of the operation part 11 (diameter shortening and length reduction). shortening) to improve portability. At this time, although the operation part 11 is shown in detail, for example, the handle 14 can be made into an inner and outer double-layer structure that can be slid relative to the axial direction, and the outer side can be used as an extension to slide toward the rear end of the operation part 11. displacement, the length of the operating portion 11 can be made variable. In addition, the switch part 16 can also be linked with this extension part, and the switch can be turned ON/OFF simultaneously with the variable operation of the long/short time of the handle 14. The material of the operation part 11 is generally used for an electric toothbrush, such as ABS resin, but is not limited thereto.

The neck 12 is made of the same material as the handle 14 , and is formed as a constriction toward the tip side, that is, toward the head 13 . At this time, it is optional to make the constriction coaxial with the diameter center of the handle 14 or to displace it. In addition, the material and color tone may be different from the handle 14 .

A head 13 is formed at the tip of the neck 12, and a coin type vibration motor (hereinafter, sometimes simply referred to as a vibration motor) 17 is provided on the bottom side of the head. In addition, wiring 18 and 19 electrically connecting the power supply 15 and the vibration motor 17 are arranged inside the neck 12 . The wirings 18 and 19 may be wiring wires or plate-shaped wirings that are insert-molded when the neck 12 is injection-molded, or they may be used in combination. That is, the structure is not particularly limited as long as the power supply from the power supply 15 to the vibration motor 17 can be ensured. Therefore, the neck portion 12 may be, for example, a cylindrical hollow body through which wiring wires are passed, or at least the constricted part of the head portion 13 may be made into a solid body (not a hollow body). In addition, the neck portion 12 itself may be formed from an elastic body so that the entire neck portion 12 may also serve as a vibration absorbing portion. In this embodiment, the vibration absorber 20 is interposed in the middle part of the neck part 12, and the neck part 12 is divided and formed by this. Therefore, the neck 12a on the handle 14 side (root side) of the vibration absorber 20 is made of a hollow body, the wires 18 and 19 are wires, and the neck 12b on the head 13 side (tip side) of the vibration absorber 20 is made of a hollow body. Constructed as a solid body, the wiring 18, 19 is insert molded.

The vibration absorber 20 is not particularly limited as long as it has vibration absorbing properties such that at least the vibration of the vibration motor 17 is hardly transmitted to the operation portion 11 between the neck 12 and the operation portion 11 . The waterproofness of the neck 12 is ensured so that saliva or the like does not enter the neck 12 a on the root side from the vibration absorber 20 . In addition, the wirings 18 and 19 connected to the vibration motor 17 from the power supply 15 through the inside of the neck 12 penetrate the vibration absorber 20 , but it is preferable to adopt a contact structure to secure an electrical connection. In this embodiment, the vibration absorber 20 can use elastic bodies (for example, olefins, styrenes), silicones (including silica gel), or the like.

The head 13 is composed of two parts, the part constituting one head upper surface side where the hair-planting plate is formed is referred to as head 13d, and the part constituting the other head bottom surface side is referred to as head 13e. The upper surface side refers to the direction of the brush on which the head is implanted, and the bottom surface side refers to the direction of the base part (13a) side of the head.

On the upper surface side of the head portion 13d, that is, on the side of the head portion 13d facing the hair-planting plate 22, a convex portion 13b to be fitted with the hair-planting plate 22 is formed. The thickness of the hair-planting board 22 facing the convex part 13b is 1.5 mm or more and 3.0 mm or less, preferably 2.0 mm or more and 2.5 mm or less.

A recess 13c for disposing the vibration motor 17 is formed on the head 13e, a recess is also formed at a position corresponding to the head 13d, and the vibration motor 17 is housed and fixed. The parts 13d and 13e are bonded and integrated. The convex part 13b which fits in the head part 13d of the hair-planting board 22 is formed so that the vibration motor may be arrange|positioned. Moreover, the vibration transmission part 90 is provided in the head part 13d, and is arrange|positioned on the convex part 13b of the head part 13d.

As shown in FIGS. 1C and 1D , the vibration transmission part 90 may also be brought into contact with the vibration motor 17 by, for example, a known insert molding method. In addition, as shown in FIG. 1E and FIG. 1F , the vibration transmission part 90 can also be provided on the head part 13d by, for example, a known insert molding method, and the vibration motor 17 can be arranged in a state where the vibration transmission part 90 does not contact. Moreover, as shown in FIG. 1G, a convex-shaped part may be provided as a vibration transmission part by pushing the hair-planting board 22 to the brush 21 side.

In the case of FIGS. 1C and 1D , after forming the head portion 13d including the vibration transmission portion 90 and the vibration motor 17 , the head portion 13e is bonded. Since the vibration transmission part 90 is in contact with the motor 17, the vibration of the vibration motor can be efficiently transmitted.

Alternatively, the vibration motor 17 may be housed in the respective recesses of the head 13d and the head 13e and bonded after the head 13d having the vibration transmission portion 90 is formed by a known insert molding method.

In addition, in this case, after the head part 13e including the vibration motor 17 is molded by a known insert molding method, it may be adhered to the head part 13d including the vibration transmission part 90 .

In the case of FIG. 1E and FIG. 1F , the vibration motor 17 is sandwiched between the head portion 13 d and the head portion 13 e including the vibration transmission portion 90 and bonded so that moisture does not enter.

In the case of FIG. 1G, the vibrating motor is sandwiched between the head portion 13d and the head portion 13e and bonded so that moisture does not enter.

In Fig. 1C and Fig. 1E, it is also possible to set the vibration transmission part 90 into a convex shape so that the hair-planting plate 22 is pushed toward the brush 21 side. In this case, the fitting strength between the head 13d and the hair-planting plate 22 can be improved. reliable.

On the hair-planting board 22, there is a brush 21 for brushing teeth with appropriate hardness and thickness. The material of the hair-planting plate 22 is preferably POM, PBT and PTT with high strength, so as to ensure the hair-planting strength. In addition, the hair-planting board 22 and the brush 21 are called a hair-planting part.

Flocking plate 22 both can be fixed by sliding, also available groove is fixed.

The material of the head 13 is generally used in electric toothbrushes, such as POM resin, but not limited thereto.

The bristles planted on the hair-planting board are not particularly limited, but for example polyamide (for example: 6-12 nylon, 6-10 nylon), polyester (for example: polyethylene terephthalate, polyethylene terephthalate) can be used. Synthetic resin materials such as butylene dicarboxylate, polytrimethylene terephthalate), polyolefins (eg polypropylene), elastomers (eg olefins, styrenes), etc.

In addition, the shape of the tip of the bristles can be made into various shapes as follows: the tip of the bristle is round; Open tail and other shapes.

The bristle length of the bristles is preferably 8mm or more and 13mm or less for adults, and 6mm or more and 9mm or less for children. Look, the length of the bristles is better. In addition, a plurality of bristles with different thicknesses may be arbitrarily combined in consideration of usability, brushing feeling, cleaning effect, durability, and the like. In addition, there is no restriction on the shape of the hair tips.

The switch portion 16 may be of a known sliding type disposed on the side of the operating portion 11 in addition to the known rotary type disposed on the rear end of the operating portion 11 . In addition, in the case of a sliding type, a locking mechanism may be provided so that the on state cannot be achieved due to accidental sliding displacement.

Vibration motor 17 is so-called eccentric motor, and following eccentric motor can be enumerated: in the container of coin type, there is a semicircular rotor on the rotating shaft of the driving part and the driving part, when the rotating shaft is rotated, Vibration occurs as a whole due to the shift of the center of gravity of the vibration motor 17 . The vibrating motor 17, for example, has a size of 1.5 mm or more and 3.0 mm or less, preferably 2.0 mm or more and 2.5 mm or less in thickness, and a diameter of φ8.0 mm or more and 12.0 mm or less, preferably φ10 mm or more and 12 mm or less. .

By using such a vibration motor 17, the electric toothbrush 10 can be made compact and lightweight, and usability can be improved. In addition, since the vibration motor 17 can vibrate the brush 21 in its radial direction, the movable area of the brush 21 can be increased, and the brushing effect can be further improved.

In addition, since the power consumption of the vibrating motor 17 is smaller than that of a linear motor, it can be fully driven by a small AAA-AAA battery, and the battery does not need to be replaced frequently. Therefore, it is suitable for downsizing the operation part.

In addition, the size of the vibration motor 17 may be smaller than that described above if, for example, the frequency of vibration can be secured at 7,500 rpm/min or more and 20,000 rpm/min or less.

The vibration transmission part 90 is provided on the head part 13d, and is arrange|positioned on the convex part 13b of the head part 13d.

As shown in Figure 1C and Figure 1D, the vibration transmission part 90 can be in contact with the vibration motor 17 by, for example, a known insert molding method, or it can be provided on the vibration motor 17 by using, for example, a known insert molding method as shown in Figure 1E and Figure 1F. The head 13d does not come into contact with the vibration motor 17 . Moreover, as shown in FIG. 1G, the hair-planting board 2 may be pressed toward the brush 21 side by providing a convex-shaped part as a vibration transmission part.

In the vibration transmission part 90, the vibration number can be enlarged, the directivity of the vibration can be set to be specific, and the structure of the increase can be changed. In order to avoid vibration loss, the protrusion protruding to the upper part of the vibration motor 17 arrangement position of the head 13d in the direction of the brush 21 is provided as an integral structure with the head 13d, so that the fitting state is reliable and the vibration loss is reduced. The material of the vibration transmission part 90 is not particularly limited as long as the number of vibrations is increased, the directivity of the vibrations can be controlled, and the amplitude can be changed.

In addition, as shown in FIG. 1B , the vibration motor 17 is a vibration motor with a smaller diameter than the width of the head 13 (for example, 8.5 mm or more and 13.0 mm or less), and it is preferable not to protrude from the head 13 .

Examples of the commercially available vibration motor 17 include LE10EOH (φ10 mm, thickness 2.0 mm, mass=approximately 1 g, rotational speed 9000 rpm, manufactured by Linkin Japan Co., Ltd.).

The vibration motor 17 is embedded or buried in the head 13, so that the head 13 can be directly vibrated without transmitting the vibration of the vibration motor 17 through a transmission mechanism or the like. Therefore, when the tooth brushing operation is performed in the oral cavity, since the vibration is directly transmitted, a reliable tooth brushing effect by the vibration can be ensured. In addition, since the vibration is directly transmitted, the applicable vibration motor 17 can be an inexpensive member that is downsized or rotates less. In addition, since the vibration motor 17 is placed in the oral cavity during use, it is preferable to use a sealed structure of ultrasonic bonding, ensure waterproofness by gaskets, etc., and perform insert molding and waterproof coating treatment on the outer surface of the vibration motor 17. Known means such as welding are used to ensure waterproofness or airtightness.

The head part 13d and the head part 13e are pasted together so that the vibration motor 17 is built in, so that the vibration motor 17 can be prevented from being exposed. The head portion 13e has a recess 13c where the vibration motor 17 is arranged, and a recess 13d is also formed at a corresponding position to house and fix the vibration motor 17 . Each head portion 13d and head portion 13e are integrally bonded together in a watertight manner by, for example, ultrasonic welding. The material of the head 13d and the head 13e is preferably POM, PBT and PP with high strength, so as to be resistant to vibration.

As a fixing method of the vibration motor 17, an elastic material for filling the gap can be used to eliminate motor looseness. In addition, protrusions may be provided at several places to fix the vibration motor 17 .

As the elastic material, among silica gel, epoxy resin, and acrylic resin, silica gel is preferable.

However, in the above embodiment, by arranging the vibration motor 17 on the bottom side of the head 13, the operation part 11 and the neck 12 can be compacted, and not only the diameter of the operation part 11 can be reduced, but also the length can be shortened. However, since the length for the user to hold and operate becomes short during use, the specifications shown in the following examples are made.

(Example 1)

The electric toothbrush of the above-mentioned form in which the coin type vibrating motor is provided on the head is adopted.

2A and 2B show Modification 1 for improving the operability and compactness of the electric toothbrush. FIG. 2A is a cross-sectional view of the electric toothbrush when not in use, and FIG. 2B is a cross-sectional view of the electric toothbrush when in use. In addition, in FIG. 2A and FIG. 2B, about the structure similar to the said embodiment, a part of illustration is abbreviate|omitted, and the same code|symbol is attached|subjected, and the description is abbreviate|omitted.

As shown in Fig. 2A and Fig. 2B, at the rear end of the operation part 11, a bottomed cylindrical cover 24 which is detachable in a recessed manner is provided as an extension part, and the cover 24 is inserted into the operation part 11 when not in use. The top end side of the cover 13 can cover the head 13 and the neck 12, and the length of the operation part 11 can be extended by inserting the cover 24 into the rear end side of the operation part 11 during use. That is, the extension part of the present embodiment is the cover 24, and the cover 24 is engaged with the distal end side of the operation part 11 in a state covering the neck 12 and the head 13 when not in use, and is made to be connected to the operation part 11 when in use. The rear end side snaps together. According to the electric toothbrush constructed in this way, the hygiene of the head brush can be ensured when not in use, and it can be used as a part of the operation part regardless of the placement place when used.

In addition, considering the fitting and covering function of the cover 24 on the operation part 11, the constriction of the neck 12 is displaced to one side (back side of the head) than the center of the operation part 11.

Here, the extension part is the full length of the electric toothbrush 10. When not in use, that is, the form of FIG. In addition, the extension part can be made to be 170 mm or more and 180 mm or less as the overall length of the electric toothbrush 10 in use, that is, the form of FIG. 2B , so that operability can be ensured. At this time, the overlap margin D4 of the cover 24 and the operation part 11 is 5 mm or more and 50 mm or less.

Therefore, in the case where the cover 24 is used as an extension, if the overlap margin D1 between the front end side and the rear end side of the operation part 11 and the cover 24 is made to be 5 mm or more and 10 mm or less, the total length D2 of the cover 24 is It is more than 65mm and less than 80mm, and the length D3 of the neck 12 and the head 13 is made more than 60mm and less than 70mm on the basis of considering the length D2 of the cover 24 and the overlap margin D1, so that the operation can be ensured. The length of the part 11 is more than 50mm and less than 70mm, and the storage space for the power supply 15 (AAA battery: length 30.02mm, AAA battery: length 44.5mm, AA battery: length 50.5mm) and the switch section 16 can be easily ensured.

(Example 2)

The electric toothbrush of the above-mentioned form in which the coin type vibrating motor is provided on the head is adopted.

3A and 3B show modification 2 for improving the compactness. FIG. 3A is a side view of the electric toothbrush when not in use, and FIG. 3B is a side view of the electric toothbrush when in use. In addition, in FIG. 3A and FIG. 3B , for the same configuration as that of the above-mentioned embodiment, some illustrations are omitted, and the same reference numerals are used to omit the description thereof.

As shown in Fig. 3A and Fig. 3B, operating part 31 is made longer than above-mentioned operating part 11, and when not in use, that is, in the form of Fig. 3A, the hidden length of neck 12 and head 13 is more than 120 mm and less than 155 mm. . In addition, the operation part 31 can accommodate the neck 12 and the head 13 on the distal side of the power supply 15 , and has a space 12 c that can accommodate the distal side of the power supply 15 in the neck 12 a on the base side. In addition, a knob 32 for slide operation is provided on the operation part 31 so that the neck 12 can enter and exit the operation part 31 integrally with the head 13 . When using the form of Fig. 3B, if the operating part 31 can be made more than 170mm and less than 180mm, it can ensure the length of easy brushing operation when it is used, and can accommodate the neck 12 and the head 13 when not in use. Conducive to compactness. At this time, the overlap margin D5 between the operation portion 31 and the neck portion 12 is not less than 5 mm and not more than 50 mm.

(Example 3)

The electric toothbrush of the above-mentioned form in which the coin type vibrating motor is provided on the head is adopted.

4A and 4B show modification 3 for improving the compactness. FIG. 4A is a side view of the electric toothbrush when not in use, and FIG. 4B is a side view of the electric toothbrush when in use. In addition, in FIG. 4A and FIG. 4B , for the same configuration as the above-mentioned embodiment, some illustrations are omitted, and the same reference numerals are used to omit the description thereof.

As shown in Figure 4A and Figure 4B, operating part 41 is done longer than above-mentioned operating part 11, namely the form of Figure 4A when not in use, the length that neck 12 and head 13 are hidden is more than 65mm and less than 80mm. In addition, the operation portion 41 can accommodate the neck 12 and the head 13 on the distal side of the power supply 15 , and has a space 12 c that can accommodate the distal side of the power supply 15 in the neck 12 a on the base side. In addition, the operation part 41 is divided into a proximal side operation part 43 and a distal side operation part 42 in such a manner that the neck 12 can protrude integrally with the head 13 from the operation part 41, and the proximal side operation part 43 and A knob 44 for rotational operation is provided between the distal end side operation parts 42 , so that the neck 12 and the head 13 can enter and exit the operation part 41 integrally. As the mechanism for moving in and out in this case, for example, the neck 12 is supported so that it does not rotate relative to the proximal side operation part 43, and the neck 12 is engaged with the top end side operation part 42 through a spiral groove or a spiral protrusion. The above-mentioned insertion and withdrawal can be performed by rotating the distal-side operation portion 42 and the knob 44 after the proximal-side operation portion 43 is gripped and fixed. When in use, that is, in the form of FIG. 4B , as long as the operating part 41 can be made more than 170 mm and less than 180 mm, it can ensure the length for easy brushing operation when it is used, and can accommodate the neck 12 and head 13 when not in use. It is conducive to compactness. At this time, the overlap margin D6 of the operation part 41 and the neck part 12 is 5 mm or more and 50 mm or less.

(Example 4)

The electric toothbrush of the above-mentioned form in which the coin type vibrating motor is provided on the head is adopted.

5A and 5B show modification 4 for improving the compactness. FIG. 5A is a side view of the electric toothbrush when not in use, and FIG. 5B is a side view of the electric toothbrush when in use. In addition, in FIG. 5A and FIG. 5B , for the same configuration as the above-mentioned embodiment, some illustrations are omitted, and the same reference numerals are used to omit the description thereof.

As shown in Fig. 5A and Fig. 5B, operating portion 51 is done longer than above-mentioned operating portion 11, and in the form of Fig. 5A when not in use, make neck 12 and head 13 by centering on pin 52, Thus, the hidden length of the neck 12 and the head 13 is more than 100 mm and less than 120 mm. In addition, the cross section of the operation part 51 is formed in a substantially U-shape so that the power supply 15 and the switch 16 are arranged and the neck 12 and the head 13 can be accommodated. In addition, in the form of FIG. 5 when in use, as long as the operating portion 51 can be made more than 170mm and less than 180mm, it can ensure the length for easy brushing operation when it is used, and can accommodate the neck 12 and the head when not in use. Part 13 contributes to compactness.

Thus, for the electric toothbrush 10 of the present invention, it is an electric toothbrush composed of a head, a neck and an operating part, and is characterized in that a coin-type vibrating motor is provided on the bottom surface side of the head, and There is a detachable hair-planting plate on the upper surface side, the operation part accommodates a battery and a switch part, and the toothbrush is vibrated by the coin-type vibration motor operated by power supply from the battery. The electric toothbrush with such a structure can ensure the brushing operation in the oral cavity and can reliably vibrate the head, and can realize miniaturization and weight reduction, can improve portability, and is economical.

Also, since the coin-type vibration motor is used, the brush 21 can be vibrated in the radial direction of the coin-type vibration motor, and the brushing effect can be improved.

In addition, since the power consumption of the coin type vibrating motor is small, it can be fully driven by a small battery of size 5-8, and it is not necessary to replace the battery frequently.

In addition, for the electric toothbrush 10 of the present invention, since there is a vibration absorber 20 between the head 13 and the operating portion, the vibration absorbing body 20 transmits the vibration generated by the driving of the vibration motor 17 to the operating portion 11. Therefore, the vibration transmitted to the operation part 11 can be alleviated, and the discomfort of the vibration transmitted to the hand of the user holding the operation part can be reduced.

In addition, since the electric toothbrush 10 of the present invention has an extension part (for example, the cover 24), the extension part shortens the total length of the operation part 11 when not in use and lengthens when it is used, so that it is possible to ensure the safety of the operation part 11 during use. Operability can be further improved and the compactness when not in use can be improved. At this time, if the extended part is made to engage with the front end side of the operation part 11 in a state covering the neck 12 and the head 13 when not in use, and to engage with the rear end side of the operation part 11 when in use, Then, the hygiene of the brush 21 of the head 13 can be ensured when not in use, and it can be used as a part of the operation part 11 regardless of the placement place when in use.

In addition, in the electric toothbrush 10 of the present invention, since the diameter of the vibration motor 17 is a small diameter smaller than the width of the head 13, it can contribute to the compactness of the head 13 and improve the brushing operability in the oral cavity.

Moreover, in the electric toothbrush 10 of this invention, the vibration transmission part 90 is provided in the head part 13d.

Vibration transmission part 90 as shown in Figure 1C and Figure 1D, both can utilize such as known insert molding method to be connected with vibration motor 17, also can utilize such as known insert molding method as shown in Figure 1E and Figure 1F to be located at. on the head 13d. Moreover, as shown in FIG. 1G, the hair-planting board 22 may be pressed to the brush 21 side by providing a convex-shaped part as a vibration transmission part.

In the vibration transmitting part 90, as long as the vibration number can be enlarged, the directionality of vibration can be set to be specific, the amplitude can be changed, and the expansion of the vibration number and the directionality of vibration can be controlled. A member capable of changing the amplitude is sufficient, and its material is not particularly limited.

In addition, the vibration transmission part 90, in order to reduce the vibration loss of the fitting structure of the flocking plate 22 and the head, can also be made into a convex part protruding toward the brush 21 direction on the upper part of the vibration motor 17 arrangement position of the head 13d. The integral structure with the head 13d ensures a reliable fitting state and reduces vibration loss.

In addition, for the electric toothbrush 10 of the present invention, by making the driving part, that is, a coin-type motor, mounted on the head, only the hair-planting part (hair-planting plate) can be replaced, thereby providing a drive part that does not need to be discarded, and can An electric toothbrush that ensures the strength of the neck and has excellent operability in the oral cavity.

In the above-mentioned embodiment, the vibration absorber is provided close to the neck on the root side, but the present invention is not limited thereto, and the vibration absorber may be provided at any position between the position where the user holds it.

In addition, the vibration absorber may be a covering body in which a part of the neck portion is covered with an elastic body by secondary molding.

In the above-mentioned embodiment, the vibrating motor is arranged by attaching the heads 13d and 13e, but the present invention is not limited thereto, and may be configured in such a way that an opening recess is formed on the back of the base portion of the head, A vibration motor was inserted into the recess from the back side of the base, and the opening of the recess was watertightly sealed with a lid. As a structure for watertightly sealing the opening surface of the recess, a conventionally known structure such as providing a rubber packing around the periphery of the cover can be employed.

(comparative example 1)

Use the following electric toothbrush (Dante System Sonic Auxiliary Brush, Lion Co., Ltd., Japanese: dentar sistema sound wave アシストブラシ, Lion Co., Ltd.): the installation position of the motor is located in the operation part, and the total length is about 180mm.

(comparative example 2)

Use the following electric toothbrush (Pocket Drutz, Panasonic Co., Ltd., Japanese: ポケットドルツ, Panasonic Co., Ltd.): the installation position of the motor is located on the brush installation shaft of the operation part, and the total length is about 160mm.

(Evaluation method)

Sixteen women who brushed their teeth when going out carried the electric toothbrushes of Example 1 and Comparative Examples 1 to 2, and evaluated the usability and usability thereof.

[Table 1]

A: 12 to 16 people who answered well

B: 7 to 11 people who answered well

C: 0 to 6 people who answered well

As shown in Table 1, Example 1 to which the present invention is applied has good size when carried, good size when used, good vibration transmitted to the head, no discomfort transmitted to the hand and intraoral operation Sex is all "A".

On the other hand, since the electric toothbrush of Comparative Example 1 has a narrow neck, it is excellent in operability in the oral cavity and goodness of size during use. However, the size of the electric toothbrush is not small, so it is inconvenient to carry.

Although the electric toothbrush of Comparative Example 2 is a size that can barely be stored in a women's cosmetic bag, there are many opinions that it cannot be placed unless it is placed at an angle, and it is more compact. In addition, the neck is thick and the operability in the oral cavity is poor.

Industrial Applicability

The electric toothbrush of the present invention, owing to being made to carry driving part (coin type motor) on the head, can only change the cassette type of hair-planting part (hair-planting plate, bristle), therefore, can provide a kind of needn't throw away driving part, and can An electric toothbrush that secures the strength of the neck and has excellent operability in the oral cavity. In addition, it is compact and excellent in portability without impairing usability, and can reliably impart vibrations to the head.

Claims (4)

1. an electric toothbrush, consists of head, cervical region and operating portion, and this electric toothbrush is characterised in that,

Bottom surface side at described head has monetary apparatus vibrating motor, the upper surface side of described head have mounting or dismounting freely plant hair plates,

Described operating portion has been taken in battery and switch portion, and toothbrush utilizes described monetary apparatus vibrating motor and vibrates, and described monetary apparatus vibrating motor moves by the power supply from described battery.

2. electric toothbrush as claimed in claim 1, is characterized in that, clamps the parts that cut off vibration on cervical region.

3. electric toothbrush as claimed in claim 1, is characterized in that, has the mechanism that extends handle when the use of described electric toothbrush with the method for slidingtype/advancement-type/collapsible/lid universal type.

4. electric toothbrush as claimed in claim 1, is characterized in that, at the upper surface of described monetary apparatus vibrating motor, has transfer of vibration portion.