Electric toothbrush capable of polishing teeth

Abstract

The utility model discloses an electric toothbrush capable of polishing teeth, which comprises a toothbrush main body and a toothbrush head, the toothbrush main body comprises a main shell and a driving motor, and the toothbrush head comprises a brush head shell, a round-head brush holder and bristles; the toothbrush body further comprises an inner shell and a waterproof rubber sleeve, a first end cover is integrally formed at one end of the inner shell, a second end cover is integrally formed at the end, close to the first end cover, of the main shell, one end of an output shaft of the driving motor sequentially penetrates through the first end cover and the second end cover, and the waterproof rubber sleeve is installed on the first end cover and / or the second end cover. And the waterproof rubber sleeve is sleeved on the output shaft of the driving motor. The toothbrush body is provided with the inner shell and the waterproof rubber sleeve, the driving motor is located in the inner shell, the waterproof rubber sleeve is connected to the output shaft of the driving motor in a sleeved mode, waterproof sealing of the output shaft of the driving motor is achieved, and external water can be effectively prevented from driving the interior of the motor to damage the motor.

Description

Technical Field

[0001] This utility model belongs to the field of toothbrushes, and more specifically, relates to an electric toothbrush that can polish teeth. Background Technology

[0002] Electric toothbrushes enhance cleaning through high-frequency vibration or rotation, reducing plaque, massaging gums, and improving brushing efficiency. The electric motor drives the brush head to generate high-frequency vibrations (far higher than those of manual toothbrushes), allowing it to reach deep into hard-to-reach areas such as between teeth and the gum line, removing more plaque and food debris. Experiments have shown that its cleaning power is more than 30% higher than that of a manual toothbrush, especially effective on areas prone to dental problems such as the back of the teeth and the roots.

[0003] The brush head of an electric toothbrush needs to be replaced regularly. It is usually detachably installed on the toothbrush body, and there will be some gaps between the two. Especially for electric toothbrushes that have been used for a long time, the brush head and the toothbrush body may become loose and the gaps may be larger. Electric toothbrushes inevitably come into contact with water during use. If water enters the electric toothbrush and flows into the drive motor along the shaft, it will damage the drive motor and render the entire electric toothbrush unusable. Utility Model Content

[0004] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides an electric toothbrush that can grind teeth. The toothbrush body has an inner shell and a waterproof sleeve. The waterproof sleeve can effectively prevent water from flowing into the drive motor from the output shaft of the drive motor and damaging the drive motor, and can play a good waterproof protection role for the drive motor.

[0005] To achieve the above objectives, according to this utility model, an electric toothbrush capable of grinding teeth is provided, comprising a toothbrush body and a toothbrush head detachably connected to the toothbrush body, wherein the toothbrush body includes a main housing and a drive motor disposed inside the main housing, characterized in that...

[0006] The toothbrush head includes a brush head housing, a round brush holder, and bristles. The brush head housing is detachably mounted on the main housing, and the round brush holder is rotatably mounted on the brush head housing. The bristles are distributed on the round brush holder. One end of the output shaft of the drive motor extends out of the main housing and is connected to the round brush holder through a transmission mechanism to drive the round brush holder to rotate.

[0007] The toothbrush body also includes an inner shell and a waterproof sleeve. The drive motor is located inside the inner shell and is fixedly mounted on the inner shell. The inner shell is located inside the main shell and is fixedly mounted on the main shell. A first end cap is integrally formed on the end of the inner shell near the toothbrush head. A second end cap is integrally formed on the end of the main shell near the toothbrush head. One end of the output shaft of the drive motor passes through the first end cap and the second end cap in sequence. The waterproof sleeve is installed on the first end cap and / or the second end cap, and the waterproof sleeve is fitted onto the output shaft of the drive motor to achieve a waterproof seal for the output shaft of the drive motor.

[0008] Preferably, the end of the output shaft of the drive motor extending out of the main housing is provided with a first flat section;

[0009] The transmission mechanism includes a transmission shaft, which is rotatably mounted on the brush head housing. One end of the transmission shaft is provided with a connecting hole, which has a second flat part for engaging with the first flat part. The transmission shaft is inserted into the output shaft of the drive motor to drive the transmission shaft to rotate 360°.

[0010] Preferably, the transmission mechanism further includes a bevel gear mechanism, which includes a driving bevel gear and a driven bevel gear meshing with each other. The driving bevel gear is installed at the end of the transmission shaft away from the second flat position, and the driven bevel gear is rotatably installed on the brush head housing and coaxially connected to the round brush holder to drive the round brush holder to rotate 360°.

[0011] Preferably, the transmission mechanism further includes a dental insert mechanism, which includes an active dental insert and a driven dental insert arranged coaxially and meshing with each other. The active dental insert is installed at the end of the transmission shaft away from the second flat position, and the active dental insert is coaxially arranged with the transmission shaft. The driven dental insert is rotatably installed on the brush head housing and coaxially connected to the round brush holder to drive the round brush holder to rotate 360°.

[0012] Preferably, a support sleeve is fixedly installed on the inner wall of the brush head housing, the drive shaft passes through the support sleeve, the drive shaft has multiple shoulders, and the inner wall of the support sleeve contacts each shoulder of the drive shaft respectively.

[0013] Preferably, the waterproof sleeve is made of silicone or rubber.

[0014] Preferably, the waterproof sleeve includes a sleeve body and an annular protrusion disposed on the inner wall of the sleeve body. The annular protrusion contacts the output shaft of the drive motor. The cross-section of the annular protrusion is arc-shaped on the side near the output shaft of the drive motor, so that the annular protrusion and the output shaft of the drive motor are in line contact.

[0015] Preferably, the first end cap has an annular retaining platform on the side near the second end cap, and the waterproof sleeve has an annular retaining groove. The annular retaining platform is engaged with the annular retaining groove, thereby installing the waterproof sleeve on the first end cap.

[0016] Preferably, the second end cap has a blind hole on the side near the first end cap, and the waterproof sleeve has an annular boss on the side near the second end cap. The annular boss extends into the blind hole, and the wall of the blind hole cooperates with the output shaft of the drive motor to clamp the annular boss.

[0017] Preferably, the toothbrush body further includes an Internet of Things (IoT) module connected to a smart device.

[0018] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0019] 1) The electric toothbrush of this utility model can polish teeth. The toothbrush body has an inner shell and a waterproof sleeve. The drive motor is located inside the inner shell. The waterproof sleeve is sleeved on the output shaft of the drive motor to achieve a waterproof seal on the output shaft of the drive motor, which can effectively prevent external water from entering the drive motor and damaging the motor.

[0020] 2) The electric toothbrush of this utility model that can grind teeth has a first end cap and a second end cap respectively on the inner shell and the main shell, and a waterproof sleeve is installed on the first end cap and / or the second end cap, so that waterproofing begins from the end and can effectively prevent external water from entering the drive motor.

[0021] 3) The electric toothbrush of this utility model that can polish teeth has a transmission mechanism using a bevel gear mechanism, which converts the rotation of the output shaft of the drive motor into a 360° rotation of the round brush holder, thereby making it convenient to polish teeth. Through polishing, stains on the surface of teeth can be removed, making teeth look brighter.

[0022] 4) The electric toothbrush of this utility model that can polish teeth adopts a tooth-clamping mechanism in its transmission mechanism, which converts the rotation of the output shaft of the drive motor into a 360° rotation of the round brush holder, thereby making it convenient to polish teeth. Through polishing, stains on the surface of teeth can be removed, making teeth look brighter. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a schematic diagram of the toothbrush body after the main shell has been removed in this utility model;

[0027] Figure 5 This is a schematic diagram of the dental insert mechanism in this utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] Reference Figures 1-4 An electric toothbrush for polishing teeth includes a toothbrush body 1 and a toothbrush head 2 detachably connected to the toothbrush body 1. The toothbrush body 1 includes a main housing 11 and a drive motor 12 disposed inside the main housing 11. The drive motor 12 is preferably a brushless motor, which drives the toothbrush head 2 to work. In addition, the toothbrush body 1 also includes a power switch, a circuit board, and other structures, which will not be described in detail here.

[0030] The toothbrush head 2 includes a brush head housing 21, a round brush holder 22, and bristles 23. The brush head housing 21, the round brush holder 22, and the bristles 23 are all structurally consistent with existing toothbrush heads 2. The brush head housing 21 is detachably mounted on the main housing 11, typically using a plug-and-play method for installation and removal. The round brush holder 22 is rotatably mounted on the brush head housing 21. The bristles 23 are distributed on the round brush holder 22 in a circular pattern. One end of the output shaft 120 of the drive motor 12 extends out of the main housing 11 and is connected to the round brush holder 22 via a transmission mechanism to drive the round brush holder 22 to rotate. The transmission mechanism can drive the round brush holder 22 to rotate 360°.

[0031] The toothbrush body 1 also includes an inner shell 13 and a waterproof sleeve 14. The drive motor 12 is located inside the inner shell 13 and is fixedly mounted on the inner shell 13. The inner shell 13 encloses the drive motor 12. The inner shell 13 is located inside the main shell 11 and is fixedly mounted on the main shell 11. The main shell 11 includes the inner shell 13. A first end cap 15 is integrally formed at one end of the inner shell 13 near the toothbrush head 2. A second end cap 16 is integrally formed at one end of the main shell 11 near the toothbrush head 2. One end of the output shaft 120 of the drive motor 12... Passing sequentially through the first end cap 15 and the second end cap 16, and exposed outside the main housing 11 and the second end cap 16, the waterproof sleeve 14 is installed on the first end cap 15 and / or the second end cap 16, and is fitted onto the output shaft 120 of the drive motor 12 to achieve a waterproof seal on the output shaft 120 of the drive motor 12. Due to the presence of the waterproof sleeve 14, external water cannot enter the drive motor 12 from the output shaft 120 and damage the drive motor 12, thus providing a good waterproof isolation effect for the drive motor 12. The waterproof sleeve 14 is made of a soft, elastic material, preferably silicone or rubber.

[0032] Furthermore, the output shaft 120 of the drive motor 12 extends out of the main housing 11 and is provided with a first flat section 121;

[0033] The transmission mechanism includes a transmission shaft 25, which is rotatably mounted on the brush head housing 25. One end of the transmission shaft 25 has a connecting hole with a second flat part for engaging with the first flat part 121. The transmission shaft 25 is inserted into the output shaft 120 of the drive motor 12 to drive the transmission shaft 25 to rotate 360°. Through the engagement of the first flat part 121 and the second flat part, the transmission shaft 25 can be positioned by moving along the axial direction of the output shaft 120 of the drive motor 12, and the output shaft 120 of the drive motor 12 can drive the transmission shaft 25 to rotate. Preferably, there are two first flat parts 121 arranged opposite to each other, and correspondingly, there are also two second flat parts, enabling a reliable connection and engagement between the transmission shaft 25 and the output shaft 120 of the drive motor 12.

[0034] As a preferred embodiment, the transmission mechanism further includes a bevel gear mechanism 241, which comprises a driving bevel gear 241 and a driven bevel gear 242 meshing with each other. The driving bevel gear 241 is mounted on the end of the transmission shaft 25 away from the second flat position, and the driven bevel gear 242 is rotatably mounted on the brush head housing 21 and connected to the round brush holder 22 to drive the round brush holder to rotate 360°. Since the axes of the driving bevel gear 241 and the driven bevel gear 242 are perpendicular to each other, the round brush holder 22 and the bristles 23 thereon can be arranged on the side of the brush head housing 21.

[0035] As another preferred option, refer to Figure 5 The transmission mechanism further includes a tooth-clamping mechanism 27, which includes an active tooth-clamping disc 271 and a driven tooth-clamping disc 272 arranged coaxially and meshing with each other. Both the active tooth-clamping disc 271 and the driven tooth-clamping disc 272 have teeth distributed on their end faces. The active tooth-clamping disc 271 is installed at the end of the transmission shaft 25 away from the second flat position, and the active tooth-clamping disc 271 is coaxially arranged with the transmission shaft 25. The driven tooth-clamping disc 272 is rotatably installed on the brush head housing 21 and coaxially connected to the round head brush holder 22 to drive the round head brush holder 22 to rotate 360°. Since the drive shaft 25, the active tooth insert 271, the driven tooth insert 272, and the round brush holder are coaxially arranged, the round brush holder 22 and the bristles 23 on it can be arranged at the end of the brush head housing 21 for easy tooth polishing. (Note: If a tooth insert mechanism 27 is used, the installation position of the round brush holder 22 and the bristles 23 is relative to...) Figure 1 , Figure 2 The installation position needs to be rotated 90°.

[0036] The jaw clutch mechanism is widely used in jaw clutches, and its specific structure will not be described in detail here.

[0037] The teeth on the active tooth disc 271 and driven tooth disc 272 of this invention are preferably serrated teeth. The serrated tooth structure is compact, capable of withstanding high torque transmission, and has a large contact area and high coefficient of friction between the teeth, effectively improving power output. Furthermore, the serrated tooth structure has superior fitting performance, is stable and reliable, and is not prone to tilting or falling off, ensuring stable operation of the mechanical transmission system. The serrated tooth structure has wide applicability and can be applied to mechanical transmissions under harsh conditions such as high speed, high load, high frequency, high temperature, and low temperature.

[0038] Furthermore, a support sleeve 26 is fixedly installed on the inner wall of the brush head housing. The drive shaft 25 passes through the support sleeve 26, and the drive shaft 25 has multiple shoulders. The inner wall of the support sleeve 26 contacts each shoulder of the drive shaft 25. Since the drive shaft 25 rotates frequently, the support sleeve 26 is provided to support it. The support sleeve 26 can be replaced after wear. The shoulders on the drive shaft 25 also help to reduce the contact area between the drive shaft 25 and the support sleeve 26, thereby reducing friction.

[0039] Furthermore, the waterproof sleeve 14 includes a sleeve body and an annular protrusion 141 disposed on the inner wall of the sleeve body. The annular protrusion 141 contacts the output shaft 120 of the drive motor 12. The cross-section of the annular protrusion 141 is arc-shaped on the side near the output shaft 120 of the drive motor 12, thereby making the annular protrusion 141 and the output shaft 120 of the drive motor 12 line contact (circumferential line contact). The soft sleeve is on the motor shaft, and the two are in circumferential line contact, so that the rotating shaft is waterproof. Multiple annular protrusions 143 can be arranged along the axial direction of the output shaft 120 of the drive motor 12, with multiple layers of contact waterproofing and the middle part suspended, to achieve a multi-layer waterproofing effect. Due to the small contact area, the friction area can be effectively reduced, and energy consumption can be reduced.

[0040] Furthermore, an annular locking platform 142 is provided on the side of the first end cap 15 near the second end cap 16, and an annular locking groove 131 is provided on the waterproof sleeve 14. The annular locking platform 142 is inserted into the annular locking groove 131, thereby installing the waterproof sleeve 14 on the first end cap 15, which facilitates the installation of the waterproof sleeve 14.

[0041] Furthermore, the second end cap 16 is provided with a blind hole on the side near the first end cap 15, and the waterproof sleeve 14 is provided with an annular boss 143 on the side near the second end cap 16. The annular boss 143 extends into the blind hole, and the hole wall of the blind hole cooperates with the output shaft 120 of the drive motor 12 to clamp the annular boss 143. Thus, the waterproof sleeve 14 starts to waterproof from the position of the second end cap 16, further effectively isolating external water.

[0042] Furthermore, the toothbrush body 1 also includes an Internet of Things (IoT) module for connecting to smart devices. This invention supports connection to a mobile app, allowing users to further expand the functionality of the electric toothbrush. For example, the app provides more care advice and health knowledge, generates personalized brushing plans based on individual brushing records, and allows users to share their experiences and insights with other users. In addition, the mobile app can remotely control some functions of the electric toothbrush, such as setting the working mode (brushing mode, polishing mode, etc.) in advance while out and about, so it can be used directly upon returning home.

[0043] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric toothbrush capable of polishing teeth, comprising a toothbrush body and a toothbrush head detachably connected to the toothbrush body, the toothbrush body comprising a main housing and a drive motor disposed inside the main housing, characterized in that, The toothbrush head includes a brush head housing, a round brush holder, and bristles. The brush head housing is detachably mounted on the main housing, and the round brush holder is rotatably mounted on the brush head housing. The bristles are distributed on the round brush holder. One end of the output shaft of the drive motor extends out of the main housing and is connected to the round brush holder through a transmission mechanism to drive the round brush holder to rotate. The toothbrush body also includes an inner shell and a waterproof sleeve. The drive motor is located inside the inner shell and is fixedly mounted on the inner shell. The inner shell is located inside the main shell and is fixedly mounted on the main shell. A first end cap is integrally formed on the end of the inner shell near the toothbrush head. A second end cap is integrally formed on the end of the main shell near the toothbrush head. One end of the output shaft of the drive motor passes through the first end cap and the second end cap in sequence. The waterproof sleeve is installed on the first end cap and / or the second end cap and is sleeved on the output shaft of the drive motor to achieve a waterproof seal for the output shaft of the drive motor.

2. The electric toothbrush capable of polishing teeth according to claim 1, characterized in that, The output shaft of the drive motor has a first flat section at one end extending out of the main housing. The transmission mechanism includes a transmission shaft, which is rotatably mounted on the brush head housing. One end of the transmission shaft is provided with a connecting hole, which has a second flat part for engaging with the first flat part. The transmission shaft is inserted into the output shaft of the drive motor to drive the transmission shaft to rotate 360°.

3. An electric toothbrush capable of polishing teeth according to claim 2, characterized in that, The transmission mechanism also includes a bevel gear mechanism, which includes a driving bevel gear and a driven bevel gear that mesh with each other. The driving bevel gear is installed at the end of the transmission shaft away from the second flat position. The driven bevel gear is rotatably installed on the brush head housing and coaxially connected to the round brush holder to drive the round brush holder to rotate 360°.

4. An electric toothbrush capable of polishing teeth according to claim 2, characterized in that, The transmission mechanism further includes a dental insert mechanism, which includes an active dental insert and a driven dental insert arranged coaxially and meshing with each other. The active dental insert is installed at the end of the transmission shaft away from the second flat position, and the active dental insert is coaxially arranged with the transmission shaft. The driven dental insert is rotatably installed on the brush head housing and coaxially connected to the round brush holder to drive the round brush holder to rotate 360°.

5. An electric toothbrush capable of polishing teeth according to claim 2, characterized in that, A support sleeve is fixedly installed on the inner wall of the brush head housing. The drive shaft passes through the support sleeve and has multiple shoulders. The inner wall of the support sleeve contacts each shoulder of the drive shaft.

6. An electric toothbrush capable of polishing teeth according to claim 1, characterized in that, The waterproof sleeve is made of silicone or rubber.

7. An electric toothbrush capable of polishing teeth according to claim 1, characterized in that, The waterproof sleeve includes a sleeve body and an annular protrusion disposed on the inner wall of the sleeve body. The annular protrusion contacts the output shaft of the drive motor. The cross-section of the annular protrusion is arc-shaped on the side near the output shaft of the drive motor, so that the annular protrusion and the output shaft of the drive motor are in line contact.

8. An electric toothbrush capable of polishing teeth according to claim 1, characterized in that, An annular locking platform is provided on the side of the first end cap near the second end cap, and an annular locking groove is provided on the waterproof sleeve. The annular locking platform is inserted into the annular locking groove, thereby installing the waterproof sleeve on the first end cap.

9. An electric toothbrush capable of polishing teeth according to claim 1, characterized in that, The second end cap has a blind hole on the side near the first end cap, and the waterproof sleeve has an annular boss on the side near the second end cap. The annular boss extends into the blind hole, and the wall of the blind hole cooperates with the output shaft of the drive motor to clamp the annular boss.

10. An electric toothbrush capable of polishing teeth according to claim 1, characterized in that, The toothbrush body also includes an Internet of Things (IoT) module that connects to smart devices.

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