Electric toothbrush

Abstract

The utility model provides an electric toothbrush which comprises a brush head assembly and a handle assembly which are combined with each other, the handle assembly comprises a main shell, an inner support and a driving assembly, at least one part of the inner support is arranged in the main shell, and the inner support is used for supporting the driving assembly; the driving assembly comprises a battery and a motor, a battery mounting part is arranged on the inner support, and the battery mounting part is used for mounting and fixing the battery; the battery mounting part comprises at least one side edge fixing part and at least one middle fixing part, the side edge fixing part is used for fixing the side edge of the battery in the longitudinal direction of the battery, and the middle fixing part is in contact with the circumferential surface of the battery in the circumferential direction of the battery to fix the battery; at least one elastic piece is arranged on the motor, and the elastic piece is a second elastic piece; a motor sleeve is further arranged on the motor, the second elastic piece is arranged between the motor and the motor sleeve, and the second elastic piece and the motor sleeve are jointly used for buffering vibration of the motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of oral cavity cleaning devices, in particular to a kind of shock-absorbing electric toothbrush. BACKGROUND

[0002] The existing electric toothbrush is mainly divided into rotary type and acoustic type two types, and the acoustic electric toothbrush is to break dental plaque by the acoustic wave generated by high-speed vibration, to achieve the effect of deep cleaning.

[0003] However, the existing electric toothbrush generally has strong vibration, and the vibration is generated by the motor acting on the brush head, so as to effectively clean the teeth and oral cavity. High-intensity vibration can cause certain irritation to the teeth and gums, and may cause bleeding, tooth knocking and other situations. Long-term use may also cause chronic tooth damage, wear teeth and gums, and slowly aggravate existing dental diseases. SUMMARY

[0004] In view of the above situation, the utility model provides an electric toothbrush, which improves the use of vibration, reduces noise and enhances waterproof effect by improving the existing electric toothbrush. The technical scheme adopted by the utility model is as follows:

[0005] The utility model provides an electric toothbrush, which comprises a brush head assembly and a handle assembly combined with each other. The handle assembly comprises a main housing, an inner support and a drive assembly. The inner support is arranged at least partially in the main housing and is used to support the drive assembly. The drive assembly comprises a battery and a motor. The inner support is provided with a battery mounting portion for mounting and fixing the battery. The battery mounting portion comprises at least one side edge fixing portion and at least one middle portion fixing portion. Along the longitudinal direction of the battery, the side edge fixing portion is used to fix the side edge of the battery. Along the circumferential direction of the battery, the middle portion fixing portion is in contact with the circumferential surface of the battery to fix the battery. The motor is provided with at least one elastic member, which is a second elastic member. The motor is also provided with a motor sleeve. The second elastic member is arranged between the motor and the motor sleeve, and the second elastic member and the motor sleeve are used together to buffer the vibration of the motor.

[0006] Along the longitudinal direction of the battery mounting portion, a reserved space is formed between the battery and the bottom wall of the battery mounting portion. A first elastic member is arranged at the reserved space. The first elastic member is arranged in the reserved space and positions the battery along the longitudinal direction. The first elastic member is arranged as a conductive spring.

[0007] The inner support is also provided with a motor support portion for supporting the motor. A fourth elastic member is arranged between the motor and the motor support portion, and the fourth elastic member is used to reduce the vibration conduction of the motor to the inner support.

[0008] The main shell is provided with a tapered portion, the motor is provided with a motor cover, the motor cover is combined with the motor sleeve and is used for protecting the motor, the motor cover comprises an extension portion which extends to the side where the brush head assembly is located, the extension portion is used for protecting the vibration arm connected with the motor, and the extension portion is provided with a third elastic piece which is used for interference fit with the tapered portion of the main shell. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the overall view of the electric toothbrush of the utility model.

[0010] Figure 2 It is the schematic view of the electric toothbrush of the utility model after hiding the main shell and the brush head assembly.

[0011] Figure 3 It is the schematic view of the electric toothbrush of the utility model after hiding the main shell and the brush head assembly from another angle.

[0012] Figure 4 It is the schematic view of the internal structure of the electric toothbrush of the utility model after hiding the battery and the motor sleeve. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in combination with the drawings.

[0014] Figure 1 It is the overall view of the electric toothbrush of the utility model; Figure 2 It is the schematic view of the electric toothbrush of the utility model after hiding the main shell and the brush head assembly; Figure 3 It is the schematic view of the electric toothbrush of the utility model after hiding the main shell and the brush head assembly from another angle; Figure 4 It is the schematic view of the internal structure of the electric toothbrush of the utility model after hiding the battery and the motor sleeve.

[0015] The utility model provides a kind of electric toothbrush 100, the electric toothbrush 100 includes brush head assembly 10 and handle assembly 20 combined with each other, the handle assembly 20 includes main shell 30, control assembly 40, inner support 50 and drive assembly 60, the control assembly 40 includes switch 41, function key etc. Operating element, user can carry out the switching of brushing mode, speed adjustment etc. Operation by these elements.The at least a part of inner support 50 is arranged in main shell 30, and inner support 50 is used to support control assembly 40 and drive assembly 60.The drive assembly 60 is used to provide driving force for electric toothbrush 100.

[0016] The driving assembly 60 comprises a battery 61, the inner support 50 comprises a battery mounting portion 51, and the battery 61 is mounted on the battery mounting portion 51. The battery mounting portion 51 comprises at least one side fixing portion 52 and at least one middle fixing portion 53. The side fixing portion 52 is used for fixing the side of the battery 61 along the longitudinal direction of the battery 61. In this embodiment, two side fixing portions 52 are arranged on the longitudinal side of any side of the battery mounting portion 51. The middle fixing portion 53 is in a ring structure and is in contact with the circumferential surface of the battery 61 along the circumferential direction of the battery 61 to fix the battery 61. A reserved space 54 is formed between the battery 61 and the bottom wall of the battery mounting portion 51 along the longitudinal direction of the battery mounting portion 51. The reserved space is used for facilitating the mounting and dismounting of the battery 61. However, the vibration of the battery 61 may be intensified due to the reserved space 54. In order to solve this problem, a first elastic member 55 is arranged at the reserved space 54. The first elastic member 55 does not hinder the mounting and dismounting of the battery 61 and positions the battery 61 along the longitudinal direction. The first elastic member 55 is arranged between the bottom wall of the battery 61 and the bottom wall of the battery mounting portion 51. In this embodiment, the first elastic member 55 is arranged as a conductive spring.

[0017] Further, the driving assembly 60 further comprises a motor 62, and the motor 62 is electrically connected with the battery 61. At least one second elastic member 63 is arranged on the motor 62, and a motor sleeve 64 is further sleeved outside the motor 62. The second elastic member 63 is arranged between the motor 62 and the motor sleeve 64, and the motor sleeve 64 wraps at least a part of the circumferential surface of the motor 62. The second elastic member 63 and the motor sleeve 64 are used for buffering the working vibration of the motor 62 and reducing the working noise of the electric toothbrush 100. In this embodiment, the inner support 50 further comprises a motor supporting portion 56, and the motor supporting portion 56 is used for supporting the motor 62. A fourth elastic member 68 is arranged between the motor 62 and the motor supporting portion 56 to reduce the vibration conduction of the motor 62 to the inner support 50.

[0018] A tapered portion 31 is arranged on the side of the main shell 30 combined with the brush head assembly 10, and the tapered portion 31 plays a role of transition connection. A motor cover 65 is arranged on the motor 62, and the motor cover 65 is combined with the motor sleeve 64 to protect the motor 62. The motor cover 65 comprises an extension portion 66 which extends to the side of the brush head assembly 10 to form and protect the vibration arm connected with the motor 62.

[0019] Further, the extension 66 is provided with a third elastic member 67, which surrounds at least a portion of the extension 66. The third elastic member 67 is used to interfere fit with the tapered portion 31 of the main housing 30, thereby preventing liquid from penetrating into the main housing 30 from the outside. The third elastic member 67 comprises a first fitting portion 671 and a second fitting portion 672, which are in a stepped shape. The first fitting portion 671 and the second fitting portion 672 are respectively interfered with the tapered portion 31, thereby forming two interference fit positions, which can enhance the waterproof effect.

[0020] The third elastic member 67 can also be provided as a suction member (such as a sponge), at this time, even if a small amount of liquid enters the inside of the tapered portion 31, the suction member can absorb it, preventing the liquid from flowing to other electronic components.

[0021] The utility model provides a kind of electric toothbrush, by multiple technical improvements, the electric toothbrush has improved use vibration, reduced working noise, enhanced waterproof effect, can make user obtain better use experience.

Claims

1. An electric toothbrush comprising a brush head assembly and a handle assembly joined together, characterized in that, The handle assembly includes a main housing, an inner support, and a drive assembly: An inner support, at least a portion of which is housed within the main housing, is used to support the drive assembly. The drive assembly includes a battery and a motor, and the inner bracket is provided with a battery mounting part for mounting and fixing the battery; A battery mounting portion includes at least one side fixing portion and at least one center fixing portion. Along the longitudinal direction of the battery, the side fixing portion is used to fix the side of the battery. Along the circumferential direction of the battery, the center fixing portion contacts the circumferential surface of the battery to fix the battery. The motor is provided with at least one elastic element, which is a second elastic element; the motor is also provided with a motor sleeve, and the second elastic element is disposed between the motor and the motor sleeve. The second elastic element and the motor sleeve work together to buffer the vibration of the motor.

2. The electric toothbrush according to claim 1, characterized in that, Along the longitudinal direction of the battery mounting part, a reserved space is formed between the battery and the bottom wall of the battery mounting part. A first elastic member is provided in the reserved space. The first elastic member is positioned in the reserved space along the longitudinal direction.

3. The electric toothbrush according to claim 2, characterized in that, The first elastic element is configured as a conductive spring.

4. The electric toothbrush according to claim 1, characterized in that, The inner support is also provided with a motor support part, which is used to support the motor. A fourth elastic element is provided between the motor and the motor support part, which is used to reduce the vibration transmission of the motor to the inner support.

5. The electric toothbrush according to any one of claims 1-4, characterized in that, The main housing is provided with a tapered portion, and the motor is provided with a motor cover. The motor cover is combined with the motor sleeve to protect the motor. The motor cover includes an extension portion that extends towards the side where the brush head assembly is located. The extension portion is used to protect the vibrating arm connected to the motor. The extension portion is provided with a third elastic element that is interference-fitted with the tapered portion of the main housing.

6. The electric toothbrush according to claim 5, characterized in that, The third elastic element includes a first mating part and a second mating part, and the first mating part and the second mating part are stepped.

7. The electric toothbrush according to claim 6, characterized in that, The first and second mating parts are respectively interference-fitted with the tapered part.

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