WO2021233368A1 - 一种电动牙刷 - Google Patents

一种电动牙刷 Download PDF

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Publication number
WO2021233368A1
WO2021233368A1 PCT/CN2021/094808 CN2021094808W WO2021233368A1 WO 2021233368 A1 WO2021233368 A1 WO 2021233368A1 CN 2021094808 W CN2021094808 W CN 2021094808W WO 2021233368 A1 WO2021233368 A1 WO 2021233368A1
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WO
WIPO (PCT)
Prior art keywords
electric toothbrush
motor
motor shaft
assembly
brush head
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PCT/CN2021/094808
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English (en)
French (fr)
Inventor
廖嘉业
姚志坚
陈思远
李双双
黄李祥
Original Assignee
美家智能科技(广州)有限公司
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Application filed by 美家智能科技(广州)有限公司 filed Critical 美家智能科技(广州)有限公司
Publication of WO2021233368A1 publication Critical patent/WO2021233368A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like

Definitions

  • This application relates to the technical field of cleaning products, specifically, to an electric toothbrush.
  • electric toothbrushes use the rapid rotation or vibration of the motor core to generate high-frequency vibrations in the brush head, which instantly decomposes toothpaste into fine foam to clean the teeth deeply.
  • the vibration of the bristles can promote the blood circulation in the oral cavity. Gum tissue has a massage effect.
  • the motor core and the brush head in the electric toothbrush have problems such as not tight assembly and tight sealing.
  • the brush head When the motor core is driven and the brush head generates high-frequency vibration, the brush head is easy to loosen and shake, and it is easy to cause the brush. Water enters the gap between the head and the motor; in addition, the vibration of the motor is easily transmitted to other parts of the toothbrush, thereby reducing the vibration efficiency of the brush head part.
  • the embodiment of the present application provides an electric toothbrush, which can realize the technical effect of fastening installation and improving the efficiency of brushing teeth.
  • the embodiment of the application provides an electric toothbrush, which may include a brush head, a brush head lining, a motor assembly, and a battery assembly;
  • the brush head and the brush head lining can be clamped to each other through interference fitting;
  • the motor assembly may include a motor and a motor shaft, the motor may drive the motor shaft, the motor shaft may be provided with a motor shaft insertion surface and a motor shaft clamping slot, and the brush head lining may be provided with The inner lining ribs and the inner lining fool-proof ribs, the motor shaft clamping groove and the inner lining ribs are fastened to each other, and the motor shaft inserting surface can be assembled with the inner lining fool-proof ribs;
  • the battery assembly may be flexibly connected to the motor assembly and configured to supply power to the motor assembly.
  • the brush head and the brush head lining are assembled through interference clamping, and the motor assembly is fastened and assembled through the motor shaft slot on the motor shaft and the lining rib on the brush head lining.
  • the shaft is provided with a motor shaft insertion surface, corresponding to the lining of the brush head lining, which is assembled with the lining anti-slip ribs, which can prevent the brush head from being reversed, reduce the probability of incorrect installation, and improve the installation efficiency;
  • the above installation structure can The brush head is clamped to achieve a tight installation; at the same time, the battery assembly and the motor assembly are flexibly connected, which can effectively reduce the transmission of the vibration of the motor assembly to the battery assembly, ensure that more vibration is transmitted to the brush head, and improve the efficiency of brushing.
  • the motor shaft clamping slot may be arranged below the motor shaft insertion surface.
  • the motor shaft can be arranged below the insertion surface of the motor shaft, which can optimize the installation steps of each part of the motor assembly and facilitate installation.
  • the electric toothbrush may further include a housing and a bottom cover, the battery assembly and the motor assembly may be arranged inside the housing, the brush head may be arranged at one end of the housing, and the bottom The cover may be provided at the other end of the housing.
  • the shell can be used to make the electric toothbrush into a whole, the motor assembly and the battery assembly are installed inside, the bottom cover and the brush head can be respectively arranged at both ends of the shell, and the shell makes the electric toothbrush easy to grasp. Practicality can be improved.
  • the electric toothbrush may further include a head seal, the head seal may be provided at the connection between the housing and the brush head, and the head seal may be between the housing and the housing. Interference assembly.
  • the head of the toothbrush housing is sealed with a head seal, which can effectively prevent liquid from penetrating into the electric toothbrush housing when the electric toothbrush is used for brushing; at the same time, the head seal and the housing Interference assembly is used to prevent liquid from entering the inside of the housing from the radial position of the head seal and the housing, thereby improving the sealing performance of the electric toothbrush.
  • a sealing rib may be provided on the housing, and the sealing rib may be interference-fitted with the head seal.
  • a sealing rib can be provided on the shell, and an interference fit can be used between the sealing rib and the head seal, which can effectively prevent the liquid from entering the interior through the radial interference position in the axial position, and improve the The sealing performance of the electric toothbrush improves the reliability of the electric toothbrush.
  • the electric toothbrush may further include a clamping spring
  • the head seal may be provided with a clamping ring surface
  • the clamping spring may be assembled on the clamping ring surface of the head seal
  • the motor shaft and the head seal can be interference-fitted, and the motor shaft can be provided with a motor shaft recessed groove.
  • the motor shaft and the head seal use an interference fit, which can effectively prevent the outside liquid from entering the electric toothbrush from the motor shaft;
  • the head seal and the motor shaft can be fixed by clamping the spring. It is tightly assembled in the radial direction and can prevent the axial sliding of the head seal;
  • the clamping spring is assembled on the clamping ring surface of the head seal; at the same time, the motor shaft is provided with a recessed groove in the motor shaft, which can further Improve and ensure the sealing of the motor shaft.
  • the electric toothbrush may further include a sealing ring, and the sealing ring may be disposed between the bottom cover and the housing.
  • the sealing ring can make the bottom cover and the shell more tightly combined, prevent liquid from entering the inside of the shell through the gap between the bottom cover and the shell, causing short circuit or damage to the battery assembly, and improving the reliability of the electric toothbrush.
  • the electric toothbrush may further include a supporting spring and a connecting piece;
  • the support spring may be arranged between the motor assembly and the battery assembly;
  • One end of the connecting member may be arranged above the support spring and may be connected to the battery assembly, and the other end of the connecting member may be arranged on the motor shaft and connected to the motor assembly.
  • the motor assembly and the battery assembly are connected flexibly through the support spring, that is, the support spring is used for assembly between the two, which can effectively reduce the transmission of the vibration of the motor assembly to the battery assembly;
  • the entire motor assembly is in a suspended state, that is, suspended inside the shell, without direct contact with the shell, which can prevent the motor vibration from being transmitted to the shell, but also ensure that most of the vibration is transmitted to the brush head, thereby improving the efficiency of brushing.
  • shock-absorbing sponges are provided on both sides in the radial direction of the motor assembly.
  • the electric toothbrush may further include a motor head cover, and the motor head cover may be arranged on the motor shaft.
  • the motor head cover can effectively reduce the transmission of the vibration of the motor assembly to the connecting piece, ensure that more vibration is transmitted to the brush head, and improve the efficiency of brushing.
  • one side of the battery assembly may be provided with a shock-absorbing sponge, and the other side of the battery assembly may be provided with a shock-absorbing pad.
  • a shock-absorbing pad is arranged on one side of the battery assembly, and a shock-absorbing sponge is arranged on the other side.
  • Figure 1a is a schematic structural diagram of an electric toothbrush provided by an embodiment of the application.
  • Figure 1b is a schematic structural diagram of a housing and a brush head provided by an embodiment of the application;
  • Figure 2a is a schematic left side view of an electric toothbrush provided by an embodiment of the application.
  • Figure 2b is a schematic cross-sectional view of an electric toothbrush provided by an embodiment of the application.
  • Fig. 3 is a partial enlarged view of a motor shaft provided by an embodiment of the application.
  • FIG. 4 is another partial enlarged view of a motor shaft provided by an embodiment of the application.
  • the terms “installed”, “set”, “provided”, “connected”, and “connected” should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or a point connection; it can be directly connected, or indirectly connected through an intermediary, or between two devices, elements or components.
  • the internal communication between For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.
  • first means two or more.
  • the electric toothbrush provided by the embodiment of the present application can be applied to the field of daily life; in the electric toothbrush, the brush head and the brush head lining are assembled by interference clamping, and the motor assembly is connected to the motor shaft clamping groove on the motor shaft.
  • the inner lining ribs on the brush head lining are fastened and assembled, and the motor shaft inserting surface is provided on the motor shaft.
  • the inner lining of the brush head lining is equipped with anti-fogging ribs to prevent the brush head from being installed.
  • the above installation structure can clamp the brush head and realize a tight installation; at the same time, the battery assembly and the motor assembly are flexibly connected, which can effectively reduce the vibration of the motor assembly from being transmitted to the battery assembly , To ensure that more vibration is transmitted to the brush head and improve the efficiency of brushing.
  • Figure 1a is a schematic structural diagram of an electric toothbrush provided by an embodiment of the application
  • Figure 1b is a schematic structure of a housing and a brush head provided by an embodiment of the application
  • Fig. 2a is a schematic left side view of an electric toothbrush provided by an embodiment of the application
  • Fig. 2b is a schematic cross-sectional view of an electric toothbrush provided by an embodiment of the application.
  • the electric toothbrush includes a brush head 100 and a brush head The inner liner 200, the motor assembly 300, and the battery assembly 400.
  • section of the sectional view of the electric toothbrush shown in Fig. 2b is the section A-A of the electric toothbrush shown in Fig. 1a.
  • the purpose of the embodiments of the present application is to provide an electric toothbrush, which can realize the technical effect of tightening installation and improving the efficiency of brushing teeth.
  • the brush head 100 and the brush head liner 200 can be clamped to each other by interference fitting.
  • Interference fit is to use the elasticity of the material to expand and deform the hole and sleeve it on the shaft. When restoring, a tightening force on the shaft is generated to connect the two parts.
  • the tolerance zone diagram of interference fit the tolerance zone of the hole is below the tolerance zone of the shaft.
  • An interference fit can be formed according to the different relative positional relationship of the combined hole and shaft tolerance zone. in. A fit with an interference (including the minimum interference equal to zero) is called an interference fit.
  • the tolerance zone of the hole is below the tolerance zone of the shaft, and the algebraic difference obtained by subtracting the size of the shaft from the size of the hole is negative.
  • the characteristics of the interference fit connection are simple structure, good centering, large carrying capacity, small weakening of the shaft and hub strength, and good impact resistance.
  • the motor assembly 300 may include a motor 310 and a motor shaft 320, the motor 310 may drive the motor shaft 320, the motor shaft 320 may be provided with a motor shaft insertion surface and a motor shaft clamping slot, and the brush head lining 200 may be provided There are inner lining ribs and inner lining fool-proof ribs, the motor shaft slot and inner lining ribs are fastened to each other, and the motor shaft inserting surface is assembled with the inner lining fool-proof ribs;
  • the battery assembly 400 may be flexibly connected to the motor assembly 300 for powering the motor assembly 300.
  • the battery assembly 400 may use a nickel-hydrogen battery or a lithium battery. It should be understood that this is only an example and not a limitation, and the battery assembly 400 may also use other types of batteries.
  • the electric toothbrush can be used in the field of daily life; the brush head 100 and the brush head lining 200 of the electric toothbrush can be assembled by interference clamping, and the motor assembly 300 is clamped by the motor shaft on the motor shaft 320
  • the groove 322 is fastened and assembled with the inner lining rib 210 on the brush head lining 200.
  • the motor shaft 320 may be provided with a motor shaft inserting surface 321, and correspondingly, the brush head lining 200 is provided with an inner lining to be assembled with it.
  • the foolproof rib 220 can prevent the brush head 100 from being installed upside down, reduce the chance of incorrect installation, and improve the installation efficiency; the above-mentioned installation structure can clamp the brush head 100 to achieve a tight installation; at the same time, the battery assembly 400 and the motor assembly 300 are flexible The connection can effectively reduce the transmission of vibration of the motor assembly 300 to the battery assembly 400, thereby ensuring that more vibration is transmitted to the brush head 100 and improving the efficiency of brushing teeth.
  • FIG. 3 is a partial enlarged view of a motor shaft provided by an embodiment of the application.
  • the motor assembly 300 may include a motor 310 and a motor shaft 320, the motor 310 may drive the motor shaft 320, the motor shaft 320 may be provided with a motor shaft insertion surface 321 and a motor shaft clamping slot 322, and the brush head lining 200
  • the inner lining rib 210 and the inner lining fool-proof rib 220 may be provided, the motor shaft clamping groove 322 and the inner lining rib 210 are fastened to each other, and the motor shaft inserting surface 321 can be assembled with the inner lining fool-proof rib 220.
  • the motor shaft clamping slot 322 may be disposed under the motor shaft insertion surface 321.
  • the motor shaft clamping slot 322 may be provided below the motor shaft insertion surface 321, which can optimize the installation steps of the various parts of the motor assembly 300 and facilitate installation.
  • the electric toothbrush may further include a housing 510 and a bottom cover 520.
  • the battery assembly 400 and the motor assembly 300 may be arranged inside the housing 510, the brush head 100 may be arranged at one end of the housing 510, and the bottom cover 520 may be arranged on the housing 510. On the other end.
  • the housing 510 can be used to make the electric toothbrush into a whole, the motor assembly 300 and the battery assembly 400 are installed inside, the bottom cover 520 and the brush head 100 can be respectively arranged at both ends of the housing 510, and the housing 510 can make the electric toothbrush The toothbrush is easy to grip and practicality is improved.
  • the electric toothbrush may further include a head seal 330.
  • the head seal 330 may be arranged at the connection between the housing 510 and the brush head 100, and the head seal 330 and the housing 510 may be interference-fitted. .
  • the head of the toothbrush housing 510 is sealed with a head seal 330, which can effectively prevent liquid from penetrating into the electric toothbrush housing 510 when the electric toothbrush is used for brushing; at the same time, the head seal 330 and The use of interference assembly between the housing 510 can prevent liquid from entering the inside of the housing 510 from the radial position of the head seal 330 and the housing 510, thereby improving the sealing performance of the electric toothbrush.
  • a sealing rib may be provided on the housing 510, and the sealing rib and the head seal 330 may be interference-fitted.
  • a sealing rib may be provided on the housing 510, and an interference fit can be used between the sealing rib and the head seal 330, which can effectively prevent the liquid from entering the interior through the radial interference position in the axial position, and improve the The sealing performance of the electric toothbrush improves the reliability of the electric toothbrush.
  • FIG. 4 is another partial enlarged view of a motor shaft provided by an embodiment of the application.
  • the electric toothbrush may further include a clamping spring 340
  • the head seal 330 may be provided with a clamping ring surface 331
  • the clamping spring 340 may be assembled on the clamping ring surface 331 of the head seal 330
  • the motor shaft 320 and the head seal 330 can be interference-fitted
  • the motor shaft 320 can be provided with a motor shaft recessed groove 323.
  • the motor shaft 320 and the head seal 330 use an interference fit, which can effectively prevent outside liquid from entering the electric toothbrush from the motor shaft 320;
  • the head seal 330 can be fixed by the clamping spring 340. It is tightly assembled with the motor shaft 320 in the radial direction and can prevent the axial sliding of the head seal 330;
  • the clamping spring 340 is assembled on the clamping ring surface 331 of the head seal 330; at the same time, it is opened on the motor shaft 320
  • There is a recessed groove 323 in the motor shaft which can further improve and ensure the sealing performance of the motor shaft 320.
  • the electric toothbrush may further include a sealing ring 530, and the sealing ring 530 may be disposed between the bottom cover 520 and the housing 510.
  • the sealing ring 530 can make the bottom cover 520 and the shell 510 more tightly combined, prevent liquid from entering the inside of the shell 510 from the gap between the bottom cover 520 and the shell 510, causing short circuit or damage to the battery assembly, and improving the electric toothbrush Reliability in use.
  • the electric toothbrush may further include a supporting spring 600 and a connecting piece 700; wherein the supporting spring 600 may be arranged between the motor assembly 300 and the battery assembly 400; one end of the connecting piece 700 may be arranged above the supporting spring 600 , Connected to the battery assembly 400, the other end of the connecting member 700 can be arranged on the motor shaft 320 to connect to the motor assembly 300.
  • a flexible connection is achieved between the motor assembly and the battery assembly through the support spring 600, that is, the support spring 600 is used for assembly between the motor assembly and the battery assembly, which can effectively reduce the transmission of the vibration of the motor assembly 300 to the battery assembly 400;
  • damping sponges are arranged on both radial sides of the motor assembly 300, which can reduce the vibration transmission between the motor assembly 300 and the housing 510; in order to ensure the axial coaxiality of the motor assembly, a connector 700 is used for connection ;
  • the connecting piece 700 Through the connecting piece 700, the entire motor assembly 300 is in a suspended state, that is, suspended inside the housing 510, and has no direct contact with the housing 510, which can prevent the motor vibration from being transmitted to the housing 510 and ensure that most of the vibration is transmitted to The brush head 100 improves the efficiency of brushing teeth.
  • the electric toothbrush may further include a motor head cover 350, and the motor head cover 350 may be disposed on the motor shaft 320.
  • the motor head cover 350 can effectively reduce the transmission of the vibration of the motor assembly 300 to the connector 700, ensure that more vibration is transmitted to the brush head, and improve the efficiency of brushing.
  • one side of the battery assembly 400 may be provided with a shock-absorbing sponge 410, and the other side of the battery assembly may be provided with a shock-absorbing pad 420.
  • a shock-absorbing pad 420 is provided on one side of the battery assembly 400, and a shock-absorbing pad 420 is provided on the other side. Shock sponge 410.
  • the application provides an electric toothbrush, the brush head of the electric toothbrush and the brush head lining are assembled by interference clamping, and the motor assembly passes through the motor shaft clamping groove on the motor shaft and the lining rib on the brush head lining
  • the motor assembly passes through the motor shaft clamping groove on the motor shaft and the lining rib on the brush head lining
  • the above-mentioned installation structure can make the brush head clamped to achieve a tight installation
  • the battery assembly and the motor assembly are flexibly connected, which can effectively reduce the vibration of the motor assembly from being transmitted to the battery assembly, and ensure that more vibration is transmitted to the brush head , Improve the efficiency of brushing.
  • the brush head, brush head lining, battery assembly, motor assembly, etc. of the present application are reproducible and can be used in various industrial applications.
  • the brush head, the brush head lining, and the motor assembly of the present application can be applied to electric toothbrushes that need to improve the efficiency of brushing.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

一种电动牙刷，涉及清洁用品技术领域。电动牙刷包括刷头（100）、刷头内衬（200）、电机组件（300）、电池组件（400）；刷头（100）和刷头内衬（200）通过过盈装配相互卡紧；电机组件（300）包括电机（310）和电机轴（320），电机（310）驱动电机轴（320），电机轴（320）上设置有电机轴插接面（321）和电机轴卡槽（322），刷头内衬（200）上设置有内衬卡筋（210）和内衬防呆筋（220），电机轴卡槽（322）与内衬卡筋（210）相互扣紧，电机轴插接面（321）与内衬防呆筋（220）装配；电池组件（400）与电机组件（300）柔性连接，用于给电机组件（300）供电。电动牙刷可以实现紧固安装，以及提高刷牙效率的技术效果。

Description

一种电动牙刷
相关申请的交叉引用
本申请要求于2020年5月22日提交中国专利局的申请号为2020104460372、名称为“一种电动牙刷”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及清洁用品技术领域，具体而言，涉及一种电动牙刷。
背景技术
目前，电动牙刷是通过电动机芯的快速旋转或震动，使刷头产生高频震动，瞬间将牙膏分解成细微泡沫，深入清洁牙缝，与此同时，刷毛的颤动能促进口腔的血液循环，对牙龈组织有按摩效果。
现有技术中，电动牙刷中的电动机芯和刷头存在装配不紧、密封不严等问题，在电动机芯驱动并使刷头产生高频震动时，刷头容易松动、晃动，且容易导致刷头和电机连接缝隙处进水等；此外，电动机震动容易传递到牙刷的其他零件上，从而降低刷头部分的震动效率。
发明内容
本申请实施例提供了一种电动牙刷，其可以实现紧固安装，以及提高刷牙效率的技术效果。
本申请实施例提供了一种电动牙刷，其可以包括刷头、刷头内衬、电机组件、电池组件；
所述刷头和所述刷头内衬可以通过过盈装配相互卡紧；
所述电机组件可以包括电机和电机轴，所述电机可以驱动所述电机轴，所述电机轴上可以设置有电机轴插接面和电机轴卡槽，所述刷头内衬上可以设置有内衬卡筋和内衬防呆筋，所述电机轴卡槽与所述内衬卡筋相互扣紧，所述电机轴插接面可以与所述内衬防呆筋装配；
所述电池组件可以与所述电机组件柔性连接，配置成给所述电机组件供电。
在上述实现过程中，刷头与刷头内衬通过过盈卡紧进行装配，电机组件通过电机轴上的电机轴卡槽与刷头内衬上的内衬卡筋进行扣紧装配，在电机轴上设有电机轴插接面，对应在刷头内衬上设置与之装配的内衬防呆筋，可以防止刷头装反，降低错误安装的几率，从而提高安装效率；上述安装结构可以使刷头卡紧，实现紧固安装；同时，电池组件与电机组件柔性连接，能有效减少电机组件的震动传递到电池组件上，保证更多的震动传递到刷头，提高刷牙效率。
可选地，所述电机轴卡槽可以设置于所述电机轴插接面的下方。
在上述实现过程中，电机轴可以设置于电机轴插接面的下方，可优化电机组件各个零件的安装步骤，方便安装。
可选地，所述电动牙刷还可以包括外壳和底盖，所述电池组件和所述电机组件可以设置于所述外壳的内部，所述刷头可以设置于所述外壳的一端，所述底盖可以设置于所述外壳的另一端。
在上述实现过程中，外壳可以用于使电动牙刷成为一个整体，将电机组件和电池组件安装在内部，底盖和刷头可以分别设置于外壳的两端，且外壳使电动牙刷方便抓握，实用性得以提高。
可选地，所述电动牙刷还可以包括头部密封件，所述头部密封件可以设置于所述外壳与所述刷头的连接处，且所述头部密封件可以与所述外壳之间过盈装配。
在上述实现过程中，牙刷外壳的头部使用头部密封件进行密封，可有效防止在使用该电动牙刷 进行刷牙时，液体渗入到该电动牙刷的外壳内部；同时，头部密封件与外壳之间使用过盈装配，可防止液体从头部密封件与外壳的径向位置进入外壳内部，从而提高该电动牙刷的密封性能。
可选地，所述外壳上可以设置有密封筋，所述密封筋可以与所述头部密封件之间过盈装配。
在上述实现过程中，外壳上可以设置有密封筋，密封筋与头部密封件之间可以使用过盈配合，可有效防止在轴向位置上液体透过径向过盈位置进入内部，提高该电动牙刷的密封性能，从而提高该电动牙刷的可靠性。
可选地，所述电动牙刷还可以包括卡紧弹簧，所述头部密封件可以设置有卡紧环面，所述卡紧弹簧可以装配在所述头部密封件的卡紧环面上，所述电机轴与所述头部密封件之间可以过盈装配，所述电机轴上可以设置有电机轴内陷槽。
在上述实现过程中，电机轴与头部密封件使用了过盈配合，可有效防止外侧液体从电机轴进入该电动牙刷的内部；通过卡紧弹簧进行固定，可使头部密封件与电机轴在径向上紧密装配，并能够防止头部密封件的轴向滑动；卡紧弹簧装配在头部密封件的卡紧环面上；同时，在电机轴上开有电机轴内陷槽，可进一步提高并保证电机轴的密封性。
可选地，所述电动牙刷还可以包括密封圈，所述密封圈可以设置于所述底盖和所述外壳之间。
在上述实现过程中，密封圈可以使底盖和外壳结合更加紧密，防止液体从底盖和外壳的缝隙处进入外壳的内部，造成电池组件的短路或损坏，提高该电动牙刷的使用可靠性。
可选地，所述电动牙刷还可以包括支撑弹簧和连接件；
所述支撑弹簧可以设置于所述电机组件和电池组件之间；
所述连接件的一端可以设置于所述支撑弹簧的上方，可以连接在所述电池组件上，所述连接件的另一端可以设置于所述电机轴上，连接所述电机组件。
在上述实现过程中，电机组件与电池组件之间通过支撑弹簧，实现柔性连接，即两者之间使用了支撑弹簧进行装配，从而能有效减少电机组件的震动传递到电池组件上；通过连接件，整个电机组件处于悬浮状态下，即悬浮于外壳的内部，与外壳无直接接触，既能防止电机震动传递到外壳上，也能保证大部分的震动传递到刷头，从而提高刷牙效率。
可选地，在所述电机组件的径向两侧设置有减震海绵。
可选地，所述电动牙刷还可以包括电机头套，所述电机头套可以设置于所述电机轴上。
在上述实现过程中，电机头套可有效减少电机组件的震动传递到连接件上，保证更多的震动传递到刷头，提高刷牙效率。
可选地，所述电池组件的一侧可以设置有减震海绵，所述电池组件的另一侧可以设置有减震垫。
在上述实现过程中，为防止电池组件的震动传递到外壳上，以及在该电动牙刷意外跌落时保护电池组件，在电池组件的一侧设置有减震垫，另一侧设置有减震海绵。通过上述结构，可以使得电池组件和外壳之间实现缓冲，从而防止电池组件的震动传递到外壳上，保证更多的震动传递到刷头，提高刷头的震动效率，进而提高刷牙效率；此外，还可以在在该电动牙刷意外跌落或撞击时保护电池组件不被损坏，提高可靠性。
本公开的其他特征和优点将在随后的说明书中阐述，或者，部分特征和优点可以从说明书推知或毫无疑义地确定，或者通过实施本公开的上述技术即可得知。
为使本申请的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1a为本申请实施例提供的一种电动牙刷的示意性结构图；
图1b为本申请实施例提供的外壳和刷头的示意性结构图；
图2a为本申请实施例提供的一种电动牙刷的示意性左视图；
图2b为本申请实施例提供的一种电动牙刷的示意性剖面图；
图3为本申请实施例提供的一种电机轴的局部放大图；
图4为本申请实施例提供的一种电机轴的另一局部放大图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请中，术语“上”、“下”、“左”、“右”、“前”、“后”、“顶”、“底”、“内”、“外”、“中”、“竖直”、“水平”、“横向”、“纵向”等指示的方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本申请及其实施例，并非用于限定所指示的装置、元件或组成部分必须具有特定方位，或以特定方位进行构造和操作。
并且，上述部分术语除了可以用于表示方位或位置关系以外，还可能用于表示其他含义，例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言，可以根据具体情况理解这些术语在本申请中的具体含义。
此外，术语“安装”、“设置”、“设有”、“连接”、“相连”应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或点连接；可以是直接相连，或者是通过中间媒介间接相连，又或者是两个装置、元件或组成部分之间内部的联通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
此外，术语“第一”、“第二”等主要是用于区分不同的装置、元件或组成部分(具体的种类和构造可能相同也可能不同)，并非用于表明或暗示所指示装置、元件或组成部分的相对重要性和数量。 除非另有说明，“多个”的含义为两个或两个以上。
本申请实施例提供的一种电动牙刷，可以应用于日常生活领域；该电动牙刷中，刷头与刷头内衬通过过盈卡紧进行装配，电机组件通过电机轴上的电机轴卡槽与刷头内衬上的内衬卡筋进行扣紧装配，在电机轴上设有电机轴插接面，对应在刷头内衬上设置与之装配的内衬防呆筋，可以防止刷头装反，降低错误安装的几率，从而提高安装效率；上述安装结构可以使刷头卡紧，实现紧固安装；同时，电池组件与电机组件柔性连接，能有效减少电机组件的震动传递到电池组件上，保证更多的震动传递到刷头，提高刷牙效率。
请参见图1a、图1b和图2a、图2b，图1a为本申请实施例提供的一种电动牙刷的示意性结构图，图1b为本申请实施例提供的外壳和刷头的示意性结构图，图2a为本申请实施例提供的一种电动牙刷的示意性左视图，图2b为本申请实施例提供的一种电动牙刷的示意性剖面图，该电动牙刷包括刷头100、刷头内衬200、电机组件300和电池组件400。
应理解，图2b所示电动牙刷剖视图的剖面，为图1a中所示电动牙刷的剖面A-A。
本申请实施例的目的在于提供一种电动牙刷，该电动牙刷可以实现紧固安装，以及提高刷牙效率的技术效果。
示例性地，刷头100和刷头内衬200可以通过过盈装配相互卡紧。
示例性地，在机械安装过程中，有许多零件间需要紧密配合，用以防止连接脱落或传递大的扭矩，过盈配合就是利用材料的弹性使孔扩大、变形而套在轴上，当孔复原时产生对轴的箍紧力，使两零件连接。在过盈配合公差带图中，孔的公差带在轴的公差带之下。根据相互结合的孔、轴公差带不同的相对位置关系，可形成过盈配合。其中。具有过盈(包括最小过盈等于零)的配合称为过盈配合。此时，孔的公差带在轴的公差带之下，孔的尺寸减去轴的尺寸所得的代数差为负。过盈配合连接的特点是结构简单、对中性好、承载能力大、对轴及轮毂的强度削弱小、耐冲击性好。
示例性地，电机组件300可以包括电机310和电机轴320，电机310可以驱动电机轴320，电机轴320上可以设置有电机轴插接面和电机轴卡槽，刷头内衬200上可以设置有内衬卡筋和内衬防呆筋，电机轴卡槽与内衬卡筋相互扣紧，电机轴插接面与内衬防呆筋装配；
示例性地，电池组件400可以与电机组件300柔性连接，用于给电机组件300供电。
在一些实施方式中，电池组件400可以使用镍氢电池或锂电池。应理解，此处仅作为示例而非限定，电池组件400也可以使用其他类型的电池。
在一些实施场景中，该电动牙刷可以应用于日常生活领域；该电动牙刷的刷头100与刷头内衬200可以通过过盈卡紧进行装配，电机组件300通过电机轴320上的电机轴卡槽322与刷头内衬200上的内衬卡筋210进行扣紧装配，在电机轴320上可以设有电机轴插接面321，对应在刷头内衬200上设置与之装配的内衬防呆筋220，可以防止刷头100装反，降低错误安装的几率，从而提高安装效率；上述安装结构可以使刷头100卡紧，实现紧固安装；同时，电池组件400与电机组件300柔性连接，能有效减少电机组件300的震动传递到电池组件400上，从而保证更多的震动传递到刷头100，提高刷牙效率。
请参见图3，图3为本申请实施例提供的一种电机轴的局部放大图。
示例性地，电机组件300可以包括电机310和电机轴320，电机310可以驱动电机轴320，电机轴320上可以设置有电机轴插接面321和电机轴卡槽322，刷头内衬200上可以设置有内衬卡筋210和内衬防呆筋220，电机轴卡槽322与内衬卡筋210相互扣紧，电机轴插接面321可以与内衬防呆筋220装配。
在一些实施方式中，电机轴卡槽322可以设置于电机轴插接面321的下方。
示例性地，电机轴卡槽322可以设置于电机轴插接面321的下方，可优化电机组件300各个零件的安装步骤，方便安装。
可选地，电动牙刷还可以包括外壳510和底盖520，电池组件400和电机组件300可以设置于外壳510的内部，刷头100可以设置于外壳510的一端，底盖520可以设置于外壳510的另一端。
示例性地，外壳510可以用于使电动牙刷成为一个整体，将电机组件300和电池组件400安装在内部，底盖520和刷头100可以分别设置于外壳510的两端，且外壳510使电动牙刷方便抓握，实用性得以提高。
在一些实施方式中，电动牙刷还可以包括头部密封件330，头部密封件330可以设置于外壳510与刷头100的连接处，且头部密封件330与外壳510之间可以过盈装配。
示例性地，牙刷外壳510的头部使用头部密封件330进行密封，可有效防止在使用该电动牙刷进行刷牙时，液体渗入到该电动牙刷的外壳510内部；同时，头部密封件330与外壳510之间使用过盈装配，可防止液体从头部密封件330与外壳510的径向位置进入外壳510内部，从而提高该电动牙刷的密封性能。
在一些实施方式中，外壳510上可以设置有密封筋，密封筋与头部密封件330之间可以过盈装配。
示例性地，外壳510上可以设置有密封筋，密封筋与头部密封件330之间可以使用过盈配合，可有效防止在轴向位置上液体透过径向过盈位置进入内部，提高该电动牙刷的密封性能，从而提高该电动牙刷的可靠性。
请参见图4，图4为本申请实施例提供的一种电机轴的另一局部放大图。
示例性地，电动牙刷还可以包括卡紧弹簧340，头部密封件330可以设置有卡紧环面331，卡紧弹簧340可以装配在头部密封件330的卡紧环面331上，电机轴320与头部密封件330之间可以过盈装配，电机轴320上可以设置有电机轴内陷槽323。
示例性地，电机轴320与头部密封件330使用了过盈配合，可有效防止外侧液体从电机轴320进入该电动牙刷的内部；通过卡紧弹簧340进行固定，可使头部密封件330与电机轴320在径向上紧密装配，并能够防止头部密封件330的轴向滑动；卡紧弹簧340装配在头部密封件330的卡紧环面331上；同时，在电机轴320上开有电机轴内陷槽323，可进一步提高并保证电机轴320的密封性。
在一些实施方式中，电动牙刷还可以包括密封圈530，密封圈530可以设置于底盖520和外壳 510之间。
示例性地，密封圈530可以使底盖520和外壳510结合更加紧密，防止液体从底盖520和外壳510的缝隙处进入外壳510的内部，造成电池组件的短路或损坏，提高该电动牙刷的使用可靠性。
在一些实施方式中，电动牙刷还可以包括支撑弹簧600和连接件700；其中，支撑弹簧600可以设置于电机组件300和电池组件400之间；连接件700的一端可以设置于支撑弹簧600的上方，连接在电池组件400上，连接件700的另一端可以设置于电机轴320上，连接电机组件300。
示例性地，电机组件与电池组件之间通过支撑弹簧600，实现柔性连接，即两者之间使用了支撑弹簧600进行装配，从而能有效减少电机组件300的震动传递到电池组件400上；可选地，在电机组件300的径向两侧设置有减震海绵，能够减少电机组件300与外壳510之间的震动传递；为保证电机组件的轴向同轴性，使用了连接件700进行连接；通过连接件700，整个电机组件300处于悬浮状态下，即悬浮于外壳510的内部，与外壳510无直接接触，既能防止电机震动传递到外壳510上，也能保证大部分的震动传递到刷头100，从而提高刷牙效率。
在一些实施方式中，电动牙刷还可以包括电机头套350，电机头套350可以设置于电机轴320上。
示例性地，电机头套350可有效减少电机组件300的震动传递到连接件700上，保证更多的震动传递到刷头，提高刷牙效率。
在一些实施方式中，电池组件400的一侧可以设置有减震海绵410，电池组件的另一侧可以设置有减震垫420。
示例性地，为防止电池组件400的震动传递到外壳510上，以及在该电动牙刷意外跌落时保护电池组件400，在电池组件400的一侧设置有减震垫420，另一侧设置有减震海绵410。通过上述结构，可以使得电池组件400和外壳510之间实现缓冲，从而防止电池组件400的震动传递到外壳510上，保证更多的震动传递到刷头100，提高刷头100的震动效率，进而提高刷牙效率；此外，还可以在在该电动牙刷意外跌落或撞击时保护电池组件400不被损坏，提高可靠性。
在本申请所有实施例中，“大”、“小”是相对而言的，“多”、“少”是相对而言的，“上”、“下”是相对而言的，对此类相对用语的表述方式，本申请实施例不再多加赘述。
应理解，说明书通篇中提到的“在本实施例中”、“本申请实施例中”或“作为一种可选的实施方式”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各处出现的“在本实施例中”、“本申请实施例中”或“作为一种可选的实施方式”未必一定指相同的实施例。此外，这些特定特征、结构或特性可以以任意适合的方式结合在一个或多个实施例中。本领域技术人员也应该知悉，说明书中所描述的实施例均属于可选实施例，所涉及的动作和模块并不一定是本申请所必须的。
在本申请的各种实施例中，应理解，上述各过程的序号的大小并不意味着执行顺序的必然先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术 领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应与权利要求的保护范围为准。
工业实用性
本申请提供了一种电动牙刷，该电动牙刷的刷头与刷头内衬通过过盈卡紧进行装配，电机组件通过电机轴上的电机轴卡槽与刷头内衬上的内衬卡筋进行扣紧装配，在电机轴上设有电机轴插接面，对应在刷头内衬上设置与之装配的内衬防呆筋，可以防止刷头装反，降低错误安装的几率，从而提高安装效率；上述安装结构可以使刷头卡紧，实现紧固安装；同时，电池组件与电机组件柔性连接，能有效减少电机组件的震动传递到电池组件上，保证更多的震动传递到刷头，提高刷牙效率。
此外，可以理解的是，本申请的刷头、刷头内衬、电池组件、电机组件等是可以重现的，并且可以应用在多种工业应用中。例如，本申请的刷头、刷头内衬、电机组件可以应用于需要提高刷牙效率的电动牙刷中。

Claims (12)

  1. 一种电动牙刷，其特征在于，包括刷头、刷头内衬、电机组件、电池组件；
    所述刷头和所述刷头内衬通过过盈装配相互卡紧；
    所述电机组件包括电机和电机轴，所述电机驱动所述电机轴，所述电机轴上设置有电机轴插接面和电机轴卡槽，所述刷头内衬上设置有内衬卡筋和内衬防呆筋，所述电机轴卡槽与所述内衬卡筋相互扣紧，所述电机轴插接面与所述内衬防呆筋装配；
    所述电池组件与所述电机组件柔性连接，配置成给所述电机组件供电。
  2. 根据权利要求1所述的电动牙刷，其特征在于，所述电机轴卡槽设置于所述电机轴插接面的下方。
  3. 根据权利要求1或2所述的电动牙刷，其特征在于，所述电动牙刷还包括外壳和底盖，所述电池组件和所述电机组件设置于所述外壳的内部，所述刷头设置于所述外壳的一端，所述底盖设置于所述外壳的另一端。
  4. 根据权利要求3所述的电动牙刷，其特征在于，所述电动牙刷还包括头部密封件，所述头部密封件设置于所述外壳与所述刷头的连接处，且所述头部密封件与所述外壳之间过盈装配。
  5. 根据权利要求4所述的电动牙刷，其特征在于，所述外壳上设置有密封筋，所述密封筋与所述头部密封件之间过盈装配。
  6. 根据权利要求4所述的电动牙刷，其特征在于，所述电动牙刷还包括卡紧弹簧，所述头部密封件设置有卡紧环面，所述卡紧弹簧装配在所述头部密封件的卡紧环面上，所述电机轴与所述头部密封件之间过盈装配，所述电机轴上设置有电机轴内陷槽。
  7. 根据权利要求3所述的电动牙刷，其特征在于，所述电动牙刷还包括密封圈，所述密封圈设置于所述底盖和所述外壳之间。
  8. 根据权利要求3所述的电动牙刷，其特征在于，所述电动牙刷还包括支撑弹簧和连接件；
    所述支撑弹簧设置于所述电机组件和电池组件之间；
    所述连接件的一端设置于所述支撑弹簧的上方，连接在所述电池组件上，所述连接件的另一端设置于所述电机轴上，连接所述电机组件。
  9. 根据权利要求3所述的电动牙刷，其特征在于，在所述电机组件的径向两侧设置有减震海绵。
  10. 根据权利要求8所述的电动牙刷，其特征在于，通过所述连接件，整个所述电机组件悬浮于所述外壳的内部并且与所述外壳无直接接触。
  11. 根据权利要求8所述的电动牙刷，其特征在于，所述电动牙刷还包括电机头套，所述电机头套设置于所述电机轴上。
  12. 根据权利要求1至7中的任一项所述的电动牙刷，其特征在于，所述电池组件的一侧设置有减震海绵，所述电池组件的另一侧设置有减震垫。
PCT/CN2021/094808 2020-05-22 2021-05-20 一种电动牙刷 WO2021233368A1 (zh)

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CN111481311A (zh) * 2020-05-22 2020-08-04 美家智能科技(广州)有限公司 一种电动牙刷

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CN111481311A (zh) * 2020-05-22 2020-08-04 美家智能科技(广州)有限公司 一种电动牙刷
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WO1999020202A1 (de) * 1997-10-17 1999-04-29 Braun Gmbh Bürstenteil für eine elektrische zahnbürste
CN103648434A (zh) * 2011-07-12 2014-03-19 高露洁-棕榄公司 牙刷和牙刷柄部
WO2017050612A1 (de) * 2015-09-22 2017-03-30 Curaden Ag Bürstenkopf
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