JP2014140776A - Electric toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric toothbrush with improved assemblability.SOLUTION: An electric toothbrush 1 comprises: a body case 2 including a vibration generation device containing a motor M and a battery housing part 22; a grip case 4 to be attached to the body case 2; a toothbrush 5 to be attached to the body case 2; and a cap 6 to be attached to the body case 2. The body case 2 comprises: an inner case 20 which has the motor M attached to one end thereof and the battery housing part 22 at the other end; and an outer case 10 having the toothbrush 5 attached thereto, the one end of the inner case 20 being inserted in the outer case 10.

Description

  The present invention relates to an electric toothbrush.

  Conventionally, various electric toothbrushes have been proposed in which the motor is vibrated by rotating an eccentric weight by the motor, the vibration is transmitted to the toothbrush bristles of the toothbrush, and the plaque removal performance is improved compared with hand brushing ( For example, Patent Document 1). A portable electric toothbrush with a cap has also been proposed (for example, Patent Document 2).

Japanese Patent Laid-Open No. 9-168554 Utility Model Registration No. 3134115

  The electric toothbrush of patent document 2 is comprised by assembling the main body 1, the main body cover body 2, the toothbrush case body 3, and the toothbrush body 4. FIG. However, it is not easy to mount the motor inside the main body 1, and there is room for improvement in terms of assembly.

  An object of the present invention is to provide an electric toothbrush with improved assemblability.

  An electric toothbrush according to an aspect of the present invention includes a main body case having a vibration generator and a battery housing portion, a gripping case attached to the main body case, a toothbrush attached to the main body case, and a cap attached to the main body case. The main body case includes an inner case having the vibration generating device attached to one end side and the battery housing portion on the other end side, and an outer case to which the toothbrush is attached, and one end side of the inner case is The outer case is internally provided.

  According to the present invention, the assemblability of the portable electric toothbrush can be improved.

The side view of the electric toothbrush of embodiment. The side view which shows the state from which the toothbrush was removed from the main body case of FIG. The side view which shows the state in which the cap was attached to the main body case of FIG. The front view of the electric toothbrush of FIG. Sectional drawing of the electric toothbrush of FIG. FIG. 6 is an enlarged view of a part of FIG. 5. Sectional drawing of the electric toothbrush of a modification.

(An example of a form that an electric toothbrush can take)
An electric toothbrush according to an aspect of the present invention includes a main body case having a vibration generator and a battery housing portion, a gripping case attached to the main body case, a toothbrush attached to the main body case, and a cap attached to the main body case. The main body case includes an inner case having the vibration generating device attached to one end side and the battery housing portion on the other end side, and an outer case to which the toothbrush is attached, and one end side of the inner case is The inner case is integrally formed with the outer case.

  According to this electric toothbrush, the main body case is divided into an inner case and an outer case, and one end side of the inner case to which the vibration generator is attached is housed in the outer case, so that the assembly of the electric toothbrush can be improved.

(Embodiment)
As shown in FIG. 1, the electric toothbrush 1 includes a main body case 2, a gripping case 4 that is externally fitted to the base end side of the main body case 2, a toothbrush 5 that is externally fitted to the distal end side of the main body case 2, As shown in FIG. 3, it has the cap 6 externally fitted by the main body case 2 to which the toothbrush 5 was mounted | worn.

  As shown in FIGS. 5 and 6, the main body case 2 has an outer case 10 and an inner case 20. The outer case 10 accommodates the inner case 20, and the inner case 20 is configured to accommodate electrical components for applying vibration to the toothbrush 5.

  The outer case 10 is a case with a chamfered covered rectangular cylinder made of ABS resin, and the brush mounting shaft cylinder 11 is formed by reducing the diameter of the upper part thereof. The brush mounting shaft cylinder 11 is a cylindrical cylinder with a lid, and a cylindrical space S1 (see FIG. 6) therein communicates with a rectangular cylindrical space S2 (see FIG. 6) of the outer case 10. Yes. Further, as shown in FIG. 2, the brush mounting shaft cylinder 11 is formed on the upper surface of the outer case 10 so that the central axis C <b> 1 is biased toward the rear surface 10 a side of the outer case 10 with respect to the central axis C <b> 2 of the outer case 10. Has been.

  A through hole 12 is formed through the front surface 10 b of the outer case 10, and the through hole 12 is closed by a flexible switch member 13. The switch member 13 is made of an elastomer resin and is fused to the opening edge of the through-hole 12. Accordingly, the switch member 13 that closes the through-hole 12 with the finger can be pushed into the space S2.

  An inner case 20 is accommodated in the spaces S <b> 1 and S <b> 2 of the outer case 10. The inner case 20 is made of ABS resin, and is formed with a square cylindrical body 21 chamfered at a substantially central position. The outer shape of the trunk portion 21 is the same shape as the inner peripheral surface of the outer case 10, and the upper half of the trunk portion 21 is housed in the space S <b> 2 of the outer case 10.

  A battery housing portion 22 is formed at the lower portion of the body portion 21 so as to extend in half by dividing the bottomed cylindrical body and opening the rear side. The battery housing part 22 is exposed downward from the lower side of the outer case 10 when a substantially upper half of the body part 21 is housed in the space S <b> 2 of the outer case 10. The battery housing part 22 is provided with an anode terminal fitting 23 at the bottom and a cathode terminal spring 24 extending from the body part 21 at the top. When the AAA battery B is accommodated in the battery accommodating portion 22, the battery B is accommodated and held in the battery accommodating portion 22 while being electrically connected to the anode terminal fitting 23 and the cathode terminal spring 24. The

  On the upper side of the body portion 21, a substrate fixing portion 25 is formed to extend. The board fixing part 25 is arranged at a position opposite to the switch member 13 provided in the outer case 10 when a substantially upper half of the body part 21 is housed in the space S2 of the outer case 10. A printed wiring board 26 is fixed to the board fixing unit 25. A switch SW that is electrically connected to the anode terminal fitting 23 and the cathode terminal spring 24 is mounted on the printed wiring board 26. The switch SW mounted on the printed wiring board 26 is mounted at a position facing the switch member 13 provided on the outer case 10. Therefore, when the switch member 13 is pushed with a finger, the switch SW is turned on / off by the pushed switch member 13.

  On the upper side of the substrate fixing portion 25, a motor housing portion 27 is formed to extend so as to halve the covered cylinder and open the rear side. The motor housing portion 27 is arranged in the space S1 of the brush mounting shaft cylinder 11 when the body portion 21 is installed in the space S2 of the outer case 10. When the motor housing portion 27 is housed in the space S <b> 1 of the brush mounting shaft cylinder 11, the outer peripheral surface of the motor housing portion 27 comes into close contact with the inner peripheral surface of the brush mounting shaft tube 11.

  A motor M is accommodated in the motor accommodating portion 27. The motor M accommodated in the motor accommodating portion 27 is configured such that when the motor accommodating portion 27 is housed in the space S1 of the brush mounting shaft cylinder 11, the outer peripheral surface of the portion opened from the motor accommodating portion 27 is brushed via the spacer 28. The inner cylinder 11 comes into contact with the inner peripheral surface of the mounting shaft cylinder 11. The rotating shaft of the motor M is protruded from the upper surface into the space S1 in the motor accommodating portion 27, and an eccentric weight 29 is fixed to the protruding rotating shaft.

  When the switch M mounted on the printed wiring board 26 is turned on, the motor M rotates by being applied with the voltage of the battery B. When the motor M rotates, the eccentric weight 29 fixed to the rotating shaft rotates eccentrically around the rotating shaft, and the rotating shaft is shaken by the eccentric rotation, and the motor M itself housed and held in the motor housing portion 27 vibrates. . The vibration of the motor M is propagated through the motor housing portion 27 to the brush mounting shaft cylinder 11 that is in close contact with the motor housing portion 27.

  As for the outer peripheral surface of the trunk | drum 21 of the inner case 20, the upper half inside the outer case 10 is diameter-reduced from the lower half which is not built in the outer case 10. FIG. As a result, when the upper half of the body portion 21 of the inner case 20 and the board fixing portion 25 of the inner case 20 are installed in the space S2, the outer peripheral surface of the lower half of the body portion 21 becomes the inner peripheral surface of the outer case 10. Engage and restrict further entry of the inner case 20. That is, in the inner case 20, the upper half of the body portion 21 is housed in the outer case 10, and the lower half of the body portion 21 and the battery housing portion 22 are exposed from the outer case 10.

  An upper annular groove 30 is formed on the outer peripheral surface of the upper half of the body portion 21, and a seal ring R <b> 1 as a second elastic member is fitted into the upper annular groove 30. The seal ring R <b> 1 is made of a rubber O-ring, and the outer portion of the seal ring R <b> 1 protrudes from the outer peripheral surface of the trunk portion 21 in a state of being fitted in the upper annular groove 30. Therefore, when the inner case 20 (body portion 21) is housed in the outer case 10, the seal ring R1 of the upper annular groove 30 is elastically deformed on the inner peripheral surface of the outer case 10, and the inner case 20 (body portion 21). ) And the outer case 10 are watertight and elastically supported.

  A lower annular groove 31 is formed on the outer peripheral surface of the lower half of the body portion 21, and an elastic ring R <b> 2 as an elastic member is fitted into the lower annular groove 31. The elastic ring R2 is a ring made of synthetic resin having elasticity, and in this embodiment, a rubber O-ring used as a sealing material is used. The elastic ring R <b> 2 is configured such that an outer portion of the elastic ring R <b> 2 protrudes from the outer peripheral surface of the trunk portion 21 in a state where the elastic ring R <b> 2 is fitted in the lower annular groove 31.

The main body case 2 formed in this way has a gripping part case 4 attached to the lower side and a toothbrush 5 attached to the upper side.
The gripping part case 4 is a case with a chamfered bottomed rectangular tube made of ABS resin, and the battery housing part 22 of the inner case 20 constituting the main body case 2 is mounted in the internal space from the upper opening. The inner peripheral surface shape of the upper opening of the gripping part case 4 is the same shape as the outer peripheral surface shape of the lower half of the body part 21, and the lower half of the body part 21 is housed in the gripping part case 4. ing.

  At this time, the outer case 10 is not housed in the gripping part case 4, and the opening end face 15 of the outer case 10 comes into contact with the opening end face 41 of the gripping part case 4. The outer diameter of the grip part case 4 is formed larger than the outer diameter of the outer case 10. Therefore, when the opening end surface 15 of the outer case 10 and the opening end surface 41 of the gripping case 4 are combined, the outer peripheral surface of the gripping case 4 protrudes outward from the outer peripheral surface of the outer case 10. And the opening part end surface 41 of the holding | grip part case 4 exposed outside becomes the level | step difference surface 41a.

  Further, when the inner case 20 (body portion 21) is housed in the grip portion case 4, the elastic ring R2 of the lower annular groove 31 is elastically deformed on the inner surface of the upper opening portion of the grip portion case 4, and the inner case 20 Between the (body part 21) and the holding part case 4, it is watertight and elastically supported. Then, by attaching the main body case 2 to the grip portion case 4, the grip portion of the electric toothbrush 1 is formed by the grip portion case 4, and the battery B accommodated and held in the battery housing portion 22 is held by the grip portion case 4. It is sealed and stored.

  The toothbrush 5 mounted on the upper side of the main body case 2 has a holding part 51, and brush bristles 52 are implanted at the tip of the holding part 51. The holding portion 51 has an outer shape at the base end that is the same as the outer shape of the outer case 10, and a fitting hole 54 is formed in the lower end surface 53 of the base end. In the fitting hole 54, the brush mounting shaft cylinder 11 formed in the outer case 10 is press-fitted and detachably fitted. The inner peripheral surface of the fitting hole 54 is in close contact with the outer peripheral surface of the brush mounting shaft tube 11 when the brush mounting shaft tube 11 is fitted. Therefore, the vibration of the motor M propagated to the brush mounting shaft cylinder 11 via the motor housing portion 27 is propagated to the brush bristles 52 at the tip portion via the holding portion 51 of the toothbrush 5.

  The holding | maintenance part 51 is formed so that it may become thin toward the front-end | tip part from the base end. More specifically, the holding portion 51 is formed so that the front surface is on the rear surface side and the left and right side surfaces are close to each other. That is, the front end portion of the holding portion 51 is disposed and planted so that the rear surface 51a of the front end portion is located behind the center axis C1 of the brush mounting shaft cylinder 11 and ahead of the rear surface 10a of the outer case 10. The bristles of the brush hairs 52 are prevented from protruding from the front surface 10 b of the outer case 10. Further, since the front surface of the holding portion 51 is moved backward so that the front end portion of the holding portion 51 is arranged at the rear position, when the teeth are brushed, the front surface of the holding portion 51 protrudes, Prevents it from hitting the overhanging part and becoming difficult to polish.

  Further, the vibration source motor M is housed in the brush mounting shaft cylinder 11, and the holding portion 51 of the toothbrush 5 is press-fitted into the brush mounting shaft cylinder 11, so that the length of the brush mounting shaft cylinder 11 (the brush It is possible to make the front end of the holder 51 close to (shrink) the main body case 2 side. As a result, the entire length of the electric toothbrush 1 can be shortened, and the electric toothbrush 1 can easily enter a pouch or a pocket and has excellent portability.

  The toothbrush 5 attached to the main body case 2 is accommodated in the cap 6. The cap 6 is a case with a chamfered covered rectangular tube made of ABS resin, and the toothbrush 5 and the main body case 2 are inserted into the internal space from the lower opening. The inner peripheral surface shape of the lower opening of the cap 6 is the same shape as the outer peripheral surface shape of the main body case 2, and the lower end surface 61 of the cap 6 is the grip portion case 4 when the cap 6 is attached to the main body case 2. This is in contact with the opening end surface 41 (step surface 41a) and restricts further entry.

  The outer shape of the cap 6 is the same as the outer shape of the gripper case 4. When the cap 6 is attached to the main body case 2, as shown in FIGS. 3 and 4, the outer peripheral surface of the cap 6 and the gripper The outer peripheral surface of the case 4 is flush with the outer peripheral surface. Thereby, the outer peripheral surface of the electric toothbrush 1 becomes a smooth surface, and when the electric toothbrush 1 is stored in a pouch or a pocket, there is no possibility that the surrounding thing is caught or the cap 6 is removed.

  Further, when the cap 6 is attached to the main body case 2, the switch member 13 provided in the main body case 2 is included in the cap 6. Therefore, when the electric toothbrush 1 is stored in the pouch or pocket, the switch member 13 is not erroneously turned on.

According to the electric toothbrush 1, for example, the following effects can be obtained.
(1) According to the electric toothbrush 1, the brush mounting shaft for detachably attaching the toothbrush 5 (holding portion 51) to the tip of the body case 2 is a cylindrical brush mounting shaft 11, and the brush mounting shaft 11 A motor M having an eccentric weight 29 that generates vibrations is disposed in the inner space S1. Therefore, the tip of the toothbrush 5 can be brought closer to the main body case 2 side by the length of the brush mounting shaft cylinder 11. As a result, the electric toothbrush 1 can be shortened in its entire length, and can easily enter a pouch or a pocket and has excellent portability.

  (2) According to the electric toothbrush 1, the toothbrush 5 (holding portion 51) is attached to the brush mounting shaft cylinder 11 in which the motor M having the eccentric weight 29 that generates vibration is attached. Therefore, the brush bristles 52 implanted at the tip of the toothbrush 5 can be brought closer to the motor M. As a result, the vibration of the motor M is difficult to attenuate and is efficiently transmitted to the brush bristles 52, so that the tooth scrubbing performance can be further improved.

  (3) According to the electric toothbrush 1, the motor M that generates vibration arranged in the brush mounting shaft cylinder 11 is located at a position farther from the gripping case 4 that is held and fixed by hand. The movement of the part can be increased, and the tooth cleaning performance can be further improved.

  (4) According to the electric toothbrush 1, the brush mounting shaft cylinder 11 is biased toward the rear surface 10 a side of the main body case 2, and the front surface of the base end portion of the holding portion 51 that holds the brush bristles 52 is moved backward. I did it. And the holding part 51 was formed in the toothbrush 5 so that it might become thin toward the front-end | tip part from the base end, and also the front surface of the holding part 51 might approach the back side. As a result, when brushing the teeth, the holding part 51 of the toothbrush 5 does not protrude to the front, and the teeth do not become difficult to brush by hitting the protruding part.

  (5) According to the electric toothbrush 1, the main body case 2, the outer case 10 having the brush mounting shaft cylinder 11, the motor housing portion 27 that houses the motor M at one end, and the battery that houses the battery B at the other end. The inner case 20 has a housing portion 22. Therefore, the motor housing portion 27 can be press-fitted and fitted into the brush mounting shaft cylinder 11 of the outer case 10 while the motor M is housed only by housing the inner case 20 in the outer case 10. 11 can be easily assembled.

  (6) According to the electric toothbrush 1, the elastic ring R <b> 2 is interposed between the main body case 2, that is, the body portion 21 of the inner case 20 and the grip portion case 4. When the inner case 20 (body portion 21) is housed in the gripping part case 4, the elastic ring R2 is elastically deformed at the inner surface of the upper opening of the gripping part case 4 so that the inner case 20 and the gripping part case 4 The gap was watertight and elastically supported.

  Therefore, the vibration of the motor M accommodated in the motor accommodating portion 27 of the inner case 20 is difficult to be transmitted to the grip portion case 4 by the elastic ring R2, and is concentrated and transmitted to the toothbrush 5 side. As a result, the tooth scrubbing performance can be further improved, and vibrations to the hand gripping the gripping part case 4 can be reduced and the teeth can be brushed comfortably.

  Moreover, since the elastic ring R2 has a sealing property, it is possible to prevent water from entering the main body case 2 through the gap between the gripping case 4 and the inner case 20 when washed with water.

  (7) According to the electric toothbrush 1, the seal ring R <b> 1 is interposed between the outer case 10 of the main body case 2 and the body portion 21 of the inner case 20. When the electric toothbrush 1 is washed with water, it is possible to prevent water from entering the main body case 2 through the space between the outer case 10 and the inner case 20.

  In addition, the vibration of the motor M housed in the motor housing portion 27 of the inner case 20 becomes difficult to be transmitted to the outer case 10 by the seal ring R1, and is concentrated and transmitted to the toothbrush 5 side. As a result, the tooth scavenging performance can be further improved, and vibrations to the hand holding the outer case 10 can be reduced and the teeth can be brushed comfortably.

  (8) According to the electric toothbrush 1, the toothbrush 5 attached to the main body case 2 is stored in the cap 6 when not in use. When the electric toothbrush 1 is carried, the toothbrush 5 (brush bristles 52) is difficult to touch the surroundings, so that the toothbrush 5 is not soiled and the pouch and the pocket are not sanitized, and the hygiene is maintained. 52 can be protected without being deformed, and high scavenging performance can be maintained. Further, the switch member 13 is not erroneously operated by the surroundings.

  Moreover, the outer shape of the cap 6 is set so that the outer peripheral surface of the cap 6 and the outer peripheral surface of the gripper case 4 are flush with each other when the cap case 6 is mounted. As a result, the outer peripheral surface of the electric toothbrush 1 becomes a smooth surface, and when the electric toothbrush 1 is stored in a pouch or pocket, it is possible to prevent the surroundings from being caught or the cap 6 from coming off. Can do.

(Modification)
The description regarding the embodiment is an exemplification of the form that the electric toothbrush of the present invention can take, and is not intended to limit the form. The electric toothbrush of this invention can take the modification of embodiment shown below other than embodiment, for example.

  In the embodiment, the main body case 2 is formed of two members, the outer case 10 and the inner case 20. This may be implemented as the main body case 2 in which the outer case 10 and the inner case 20 are integrated. By doing so, it is possible to reduce the number of parts and the seal ring R1.

  In the embodiment, the elastic ring R <b> 2 is interposed between the body portion 21 of the inner case 20 and the grip portion case 4. This may be carried out by arranging an elastic member at a predetermined interval in the circumferential direction instead of the ring-shaped one.

  -In embodiment, the elastic ring R2 interposed between the trunk | drum 21 and the holding | grip part case 4 of the inner case 20 used the O-ring which has elasticity and the sealing property with respect to water. This may be performed using an elastic member that is elastic only and does not have a sealing property against water.

  In the embodiment, the elastic ring R <b> 2 is interposed between the grip part case 4 and the inner case 20 of the main body case 2. As shown in FIG. 7, the lower portion of the outer case 10 of the main body case 2 is inserted into the grip part case 4, and the elasticity corresponding to the elastic ring R <b> 2 is provided between the grip part case 4 and the outer case 10. The member R3 may be interposed.

(Additional note regarding means for solving the problem)
[Appendix A1]: Vibration generating device including a motor with an eccentric weight, a motor accommodating portion for accommodating the motor, a main body case including a battery accommodating portion for accommodating a battery for driving the motor, and a tip of the main body case A toothbrush that can be attached to a part and removable from the distal end of the main body case, a base end part of the main body case is inserted, and a holding part case that accommodates the battery accommodating part, and an open end surface thereof A cap that accommodates the toothbrush that is in contact with the opening end surface of the gripping case and is attached to the tip of the main body case; and an elastic member that is disposed between the gripping case and the main body case. An electric toothbrush in which an outer peripheral surface of a part case projects outward from an outer peripheral surface of the main body case.

  [Appendix A2]: The main body case includes an inner case having the motor housing portion at one end and the battery housing portion at the other end, and an opening end surface side of the gripper case so as to cover the motor housing portion. The electric toothbrush according to [Appendix A1], wherein the outer peripheral surface of the gripper case protrudes outward from the outer peripheral surface of the outer case which is the outer peripheral surface of the main body case.

  [Appendix A3]: The outer case includes a brush mounting shaft cylinder to which the toothbrush can be attached and the toothbrush can be removed. The inner case has the motor housing portion press-fitted into the brush mounting shaft cylinder. The electric toothbrush according to [Appendix A2], which is accommodated in the outer case so as to be worn, and the elastic member is disposed between the grip portion case and the battery accommodating portion of the inner case.

[Appendix A4]: The electric toothbrush according to [Appendix A2] or [Appendix A3] in which a second elastic member is disposed between the outer case and the inner case.
[Appendix A5]: The electric toothbrush according to [Appendix A4], in which the second elastic member is an O-ring having a sealing function.

[Appendix A6]: The electric toothbrush according to any one of [Appendix A1] to [Appendix A5], in which the elastic member is an O-ring having a sealing function.
[Appendix A7]: The electric toothbrush according to any one of [Appendix A1] to [Appendix A6], in which the outer shape of the cap is the same as the outer shape of the gripping part case.

  [Appendix B1]: Vibration generator including a motor with an eccentric weight, a motor housing portion that houses the motor, a main body case that includes a battery housing portion that houses a battery for driving the motor, and a tip of the main body case A toothbrush that can be attached to a part and removable from the distal end of the main body case, a base end part of the main body case is inserted, and a holding part case that accommodates the battery accommodating part, and an open end surface thereof A cap that accommodates the toothbrush attached to the distal end portion of the main body case, and an elastic member disposed between the gripping case and the main body case. The main body case is provided with a brush mounting shaft cylinder capable of attaching the toothbrush and removing the toothbrush at the tip of the portion protruding from the gripping part case. For example, the motor housing portion, an electric toothbrush, which is accommodated in said brush mounting shaft within the cylinder.

  [Appendix B2]: The main body case has a portion thicker than the brush mounting shaft cylinder between the brush mounting shaft cylinder and the gripping section case in a portion protruding from the gripping section case [Appendix B1]. The electric toothbrush described in 1.

  [Appendix B3]: The main body case includes an outer case including the brush mounting shaft cylinder, and an inner case including the motor housing portion at one end and the battery housing portion at the other end [Appendix B1] or The electric toothbrush according to [Appendix B2].

  [Appendix B4]: A vibration generator including a motor with an eccentric weight, a motor accommodating portion for accommodating the motor at a distal end side thereof, and a battery accommodating portion for accommodating a driving battery for the motor at a proximal end side. A main body case, a toothbrush that can be attached to and removed from the front end of the main body case, and a grip that contains the base end of the main body case and houses the battery housing A portion case, a cap whose opening end surface is in contact with the opening end surface of the gripping case, and that houses the toothbrush attached to the tip of the main body case, and is disposed between the gripping portion case and the main body case An outer case including a brush mounting shaft cylinder capable of attaching the toothbrush and detaching the toothbrush; An inner case including the motor housing portion at one end and the battery housing portion at the other end, and the inner housing is press-fitted into the brush mounting shaft cylinder of the outer case. The electric toothbrush is housed in the outer case, and the elastic member is disposed between the grip part case and the battery housing part of the inner case.

[Appendix B5]: The electric toothbrush according to [Appendix B3] or [Appendix B4] in which a second elastic member is disposed between the outer case and the inner case.
[Appendix B6]: The electric toothbrush according to [Appendix B5], in which the second elastic member is an O-ring having a sealing function.

[Appendix B7]: The electric toothbrush according to any one of [Appendix B1] to [Appendix B6], in which the elastic member is an O-ring having a sealing function.
[Appendix B8] The electric toothbrush according to any one of [Appendix B1] to [Appendix B7], wherein the outer shape of the cap is the same as the outer shape of the gripping case.

  According to the electric toothbrush of [Appendix A1], since the elastic member is disposed between the grip part case and the main body case, the vibration of the motor housed in the motor housing part is not easily transmitted to the grip part case. For this reason, the vibration of the motor is easily transmitted to the toothbrush side. For this reason, the tooth scavenging performance is improved, vibrations are hardly transmitted to the hand holding the gripping part case, and the teeth can be easily brushed comfortably.

  According to the electric toothbrush of [Appendix A4], since the second elastic member is disposed between the outer case and the inner case, the vibration of the motor is hardly transmitted to the outer case. For this reason, the vibration of the motor concentrates on the toothbrush side and is easily transmitted, and the tooth cleaning performance is improved.

According to the electric toothbrush of [Appendix A5], when the electric toothbrush is washed with water, it is difficult for water to enter the main body case from between the outer case and the inner case.
According to the electric toothbrush of [Appendix A6], when the electric toothbrush is washed with water, it is difficult for water to enter the main body case from between the gripping case and the main body case.

  According to the electric toothbrush of [Appendix A7], when the cap is attached to the main body case, the outer peripheral surface of the cap and the outer peripheral surface of the gripper case form a flush relationship. For this reason, the outer peripheral surface of the electric toothbrush forms a smooth surface. For this reason, when the electric toothbrush is accommodated in a pouch or a pocket, a possibility that a surrounding object is caught on the electric toothbrush or a possibility that the cap is detached from the main body case is reduced.

DESCRIPTION OF SYMBOLS 1: Electric toothbrush 2: Main body case 4: Gripping part case 5: Toothbrush 6: Cap 10: Outer case 20: Inner case 22: Battery accommodating part M: Motor (vibration generator)

Claims (1)

A body case having a vibration generator and a battery housing;
A gripper case attached to the main body case;
A toothbrush attached to the body case;
A cap attached to the body case;
The main body case includes an inner case having the vibration generating device attached to one end side and the battery housing portion on the other end side, and an outer case to which the toothbrush is attached, and one end side of the inner case is attached to the outer case. Electric toothbrush to be installed.