Electric toothbrush
By adding an elastic first clamping block to the socket of the electric toothbrush, the problem of pulling out the socket when changing the brush header is solved, the fixing force between the socket and the transmission shaft is enhanced, and the stability of vibration transmission is ensured. sex.
Patent Information
- Application Number
- CN202420939036.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When replacing the brush header, existing electric toothbrushes can easily lead to the socket being pulled out together, causing the transmission shaft and socket to loosen, affecting vibration transmission.
The first clamping block with elasticity is added to the socket. When replacing the brush head member, the brush head member prys the first clamping block to tighten toward the transmission shaft, thereby enhancing the fixing force between the sleeve and the transmission shaft.
It effectively prevents the socket from being pulled out together when changing the brush head piece, enhances the fixing force between the socket and the transmission shaft, and ensures the stability of vibration transmission.
Smart Images
Figure CN222444400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush. Background Art
[0002] The sweeping vibration electric toothbrush drives the brush head to vibrate by the high-speed back-and-forth rotation of the transmission shaft on the handle to achieve the effect of cleaning teeth. The electric toothbrush usually consists of a brush handle and a brush head detachably connected to the brush handle. The general electric toothbrush structure is that a motor is set in the brush handle, and the output shaft of the motor is connected to the brush head to drive the brush head to vibrate.
[0003] The brush head component, as the power output component of the electric toothbrush, needs to be able to properly transmit power and be easily disassembled and replaced. Generally speaking, the brush head component is assembled by snapping, that is, the brush head component is directly sleeved on the socket connected to the drive shaft to form a snap connection. The socket is not replaced, and the brush head component is disassembled by directly pulling it out with force. This disassembly method will have certain problems. Due to production tolerance issues, the clamping force between the brush head component and the socket is different. When the brush head component is pulled out, the socket is easily pulled out together with the brush head component that is clamped too tightly. At this time, two situations will occur; the first is that the brush head component and the socket component can still be disassembled, and then after the socket component is installed back again, the drive shaft and the socket component will be loose, which is not conducive to the subsequent vibration transmission; the second is that the socket component cannot be removed from the brush head component, resulting in the entire electric toothbrush being unusable.
[0004] Therefore, it is necessary to provide an electric toothbrush to increase the fixing force between the sleeve and the transmission shaft to prevent the brush head from being pulled out together with the sleeve when the brush head is replaced. Utility Model Content
[0005] In order to solve the above problem, the utility model provides an electric toothbrush to increase the fixing force between the sleeve and the transmission shaft to prevent the brush head from being pulled out together with the sleeve when replacing the brush head.
[0006] The utility model is realized by the following technical solutions:
[0007] The utility model proposes an electric toothbrush, comprising an electric handle, a socket part, and a brush head part, wherein a transmission shaft is provided at one end of the electric handle, the transmission shaft is inserted into the socket part and fixedly connected to the socket part, one end of the brush head part is sleeved on the socket part and forms a detachable connection with the socket part, a first clamping block is provided on one side of the bottom end of the socket part, one end of the first clamping block is elastically connected to the bottom end of the socket part, the inner side of the first clamping block faces one side of the transmission shaft, and when the brush head part is pulled out to disengage from the socket part, the brush head part pries the first clamping block toward the transmission shaft to tighten it, so as to enhance the fixing force between the socket part and the transmission shaft.
[0008] Furthermore, a first arc-shaped clamping boss is provided on the sleeve, a second arc-shaped clamping boss is provided on the outer side of the first clamping block, the first arc-shaped clamping boss and the second arc-shaped clamping boss are surrounded to form a clamping ring, and an annular clamping groove is provided on the inner side wall of one end of the brush head component, and the annular clamping groove is clamped and connected with the clamping ring.
[0009] Furthermore, an arc surface is provided on the inner side of the first clamping block, and the arc surface faces one side of the transmission shaft.
[0010] Furthermore, a first anti-slip panel is provided on the arc surface, and a gap exists between the first anti-slip panel and the transmission shaft.
[0011] Furthermore, the first anti-slip panel is provided with a plurality of anti-slip protrusion structures, and the plurality of anti-slip protrusion structures are arranged in sequence.
[0012] Furthermore, one end of the first clamping block is provided with an elastic connecting end, and the elastic connecting end is fixedly connected to the bottom end of the sleeve.
[0013] Furthermore, a second clamping block is provided on the socket, and the second clamping block is aligned with the first clamping block up and down, one end of the second clamping block is elastically connected to one side of the socket, and the other end of the second clamping block extends toward the first clamping block, and the brush head member presses the outer side of the second clamping block so that the second clamping block is tightened toward the transmission shaft.
[0014] Furthermore, a pressing block is provided on the inner side wall of one end of the brush head component, and the pressing block abuts against the outer side of the second clamping block.
[0015] Furthermore, a second anti-slip panel is provided on the inner side of the second clamping block, and the second anti-slip panel is tightly connected to the transmission shaft.
[0016] Furthermore, the sweeping angle range of the brush head is -20° to +20°, and the vibration frequency of the electric handle is 18,000-24,000 revolutions per minute.
[0017] Beneficial effects of the utility model:
[0018] The utility model adopts a socket part connected to the transmission shaft at one end of the electric handle, and a first elastic clamping block is added to the socket part. When replacing the brush head part, the brush head part is pulled out to separate from the socket part, and the brush head part will pry the first clamping block to bend inward, and then tighten toward the transmission shaft to enhance the fixing force between the socket part and the transmission shaft to prevent the socket part from being pulled out together. In summary, the electric toothbrush can increase the fixing force between the socket part and the transmission shaft to prevent the brush head part from being pulled out together with the socket part when replacing. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is an exploded view of the electric toothbrush of the present utility model;
[0020] Figure 2 It is a partial cross-sectional view of the electric toothbrush of the utility model;
[0021] Figure 3 for Figure 2 A partial enlarged schematic diagram of the label A;
[0022] Figure 4 It is a schematic diagram of the socket connector of the electric toothbrush of the utility model;
[0023] Figure 5 It is a schematic diagram of the socket connector of the electric toothbrush of the utility model from another angle;
[0024] Figure 6 It is a schematic diagram of the brush head of the electric toothbrush of the present utility model.
[0025] The reference numerals are as follows:
[0026] 1. Electric handle; 11. Transmission shaft;
[0027] 2. socket; 21. first clamping member; 211. second arc-shaped clamping boss; 212. arc surface; 2121. first anti-skid panel; 21211. anti-skid protrusion structure; 22. first arc-shaped clamping boss; 201. clamping ring 2; 23. second clamping block; 231. second anti-skid panel; 213. elastic connection end;
[0028] 3. Brush head; 31. Annular groove; 32. Pressing block. DETAILED DESCRIPTION
[0029] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.
[0030] Please refer to Figure 1-Figure 6The utility model proposes an electric toothbrush, comprising an electric handle 1, a socket 2, and a brush head 3. A transmission shaft 11 is provided at one end of the electric handle 1. The transmission shaft 11 is the output shaft of a rotary motor inside the electric handle 1. The rotary motor rotates back and forth, that is, the rotation angle range of the transmission shaft 11 is -20° to +20°, so that the sweeping angle range of the brush head 3 is -20° to +20°. When in use, the brush head 3 automatically brushes the teeth. A vibration motor is also provided in the electric handle 1. The vibration frequency of the vibration motor is 18000-24000 revolutions per minute, which transmits the vibration to the electric handle 1 and then to the brush head 3, so that the brush head 3 vibrates while sweeping, which is convenient for cleaning teeth. The transmission shaft 11 is inserted in the socket 2 and connected to the socket 2 Fixed connection, the socket 2 is made of plastic, one end of the brush head part 3 is sleeved on the socket 2 and forms a detachable connection with the socket 2, this detachable connection is a snap connection, that is, the brush head part 3 is directly sleeved on the socket 2 with force, and a "snap" sound is heard, then the snap connection is completed, a switch is provided on the electric handle 1, after the switch is turned on, the transmission shaft 11 rotates back and forth to drive the brush head part 3 to sweep and vibrate, and a first clamping block 21 is provided on one side of the bottom end of the socket 2, one end of the first clamping block 21 is elastically connected to the bottom end of the socket 2, and the inner side of the first clamping block 21 faces one side of the transmission shaft 11, when the brush head part 3 is pulled out to disengage from the socket 2, the brush head part 3 pries the first clamping block 21 toward the transmission shaft 11 to tighten, so as to enhance the fixing force between the socket 2 and the transmission shaft 11.
[0031] In this embodiment, when assembling at the factory, the worker connects the socket 2 to the transmission shaft 11 at one end of the electric handle 1. At this time, the socket 2 does not need to be replaced, and the brush head 3 can be replaced alone. When designing the socket 2, a first elastic clamping block 21 is added to the socket 2. When replacing the brush head 3, the brush head 3 is pulled out to separate from the socket 2, and the brush head 3 pries the first clamping block 21 to bend inward, so that the first clamping block 21 is tightened toward the surface of the transmission shaft 11, so as to enhance the fixing force between the socket 2 and the transmission shaft 11, and prevent the socket 2 from being pulled out together;
[0032] In summary, the electric toothbrush can increase the fixing force between the sleeve and the transmission shaft to prevent the brush head from being pulled out together with the sleeve when the brush head is replaced.
[0033] In this embodiment, a first arc-shaped snap-fitting boss 22 is provided on the sleeve 2, and a second arc-shaped snap-fitting boss 211 is provided on the outer side of the first clamping block 21. The first arc-shaped snap-fitting boss 22 and the second arc-shaped snap-fitting boss 211 surround a snap-fitting ring 201. An annular snap-fitting groove 31 is provided on the inner side wall of one end of the brush head 3, and the annular snap-fitting groove 31 is snap-fitted and connected with the snap-fitting ring 201; when the brush head 3 and the sleeve 2 are snap-fitted and connected, the snap-fitting connection is carried out by relying on the elastic restoring force of the material of the brush head 3, that is, this process The middle annular groove 31 will be expanded, and will recover after the fully formed snap-fit connection. Similarly, since the first arc-shaped snap-fit boss 22 and the second arc-shaped snap-fit boss 211 are not continuous, the snap-fit ring 201 will be compressed, causing the first clamping block 21 to bend inward and deform, and will recover after the fully formed snap-fit connection. Therefore, the clamping force between the brush head component 3 and the sleeve component 2 is not too tight, but can maintain the normal use of the brush head component 3. When snapping, the snap-fit ring 201 is accommodated in the annular groove 31.
[0034] In this embodiment, an arc surface 212 is provided on the inner side of the first clamping block 21, and the arc surface 212 faces one side of the transmission shaft 11. When the first clamping block 21 bends inward, the arc surface 212 will fit the side of the transmission shaft 11. A first anti-slip panel 2121 is provided on the arc surface 212. The first anti-slip panel 2121 is made of a soft material, such as rubber, silicone, etc. There is a gap between the first anti-slip panel 2121 and the transmission shaft 11. The first anti-slip panel 2121 is used to increase the friction force of the arc surface 212 so that the first clamping block 21 can be tightly attached to the side of the transmission shaft 11 after bending inward. A plurality of anti-slip protrusion structures 21211 are provided on the first anti-slip panel 2121. The plurality of anti-slip protrusion structures 21211 are arranged in sequence, and the anti-slip protrusion structures 21211 are used to increase the fitting force of the first anti-slip panel 2121.
[0035] In this embodiment, an elastic connecting end 213 is provided at one end of the first clamping block 21, and the elastic connecting end 213 is fixedly connected to the bottom end of the socket 2. Due to the plastic, when the thickness of the elastic connecting end 213 is smaller than that of the first clamping block 21, the elastic connecting end 213 has a certain elastic force. When the first clamping block 21 is pressed and released, it is the elastic connecting end 213 that provides the elastic restoring force.
[0036] In this embodiment, a second clamping block 23 is also provided on the socket 2, and the second clamping block 23 is aligned with the first clamping block 21 up and down, one end of the second clamping block 23 is elastically connected to one side of the socket 2, and the other end of the second clamping block 23 extends toward the first clamping block 21, and the brush head part 3 presses the outer side of the second clamping block 23, so that the second clamping block 23 is tightened toward the transmission shaft 11; in order to increase the fixing force of the socket 2 and the transmission shaft 11, when the brush head part 3 and the socket 2 form a snap connection, the brush head part 3 will also press the outer side of the second clamping block 23, so that the second clamping block 23 is bent toward the side of the transmission shaft 11, thereby tightening the transmission shaft 11, and when the brush head part 3 is pulled out, when the brush head part 3 has not been completely pulled out, the second clamping block 23 will still tighten the transmission shaft 11, thereby increasing the fixing force of the socket 2 and the transmission shaft 11.
[0037] In this embodiment, a pressing block 32 is provided on the inner wall of one end of the brush head member 3, and the pressing block 32 abuts against the outer side of the second clamping block 23. When the brush head member 3 and the socket member 2 form a snap connection, the pressing block 32 has a sufficient height to press the outer side of the second clamping block 23, so that the inner side of the second clamping block 23 is tightened and fixed to the transmission shaft 11.
[0038] In this embodiment, a second anti-slip panel 231 is provided on the inner side of the second clamping block 23. The second anti-slip panel 231 is made of soft material, such as rubber, silicone, etc. The second anti-slip panel 231 is tightly connected to the transmission shaft 11. When the second clamping block 23 bends inward, the second anti-slip panel 231 is tightly attached to the side of the transmission shaft 11, thereby improving the fixing force between the socket 2 and the transmission shaft 11.
[0039] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.
Claims
1. An electric toothbrush, characterized in that: The invention comprises an electric handle (1), a socket (2), and a brush head (3), wherein one end of the electric handle (1) is provided with a transmission shaft (11), the transmission shaft (11) is inserted into the socket (2) and fixedly connected to the socket (2), one end of the brush head (3) is sleeved on the socket (2) and forms a detachable connection with the socket (2), a first clamping block is provided on one side of the bottom end of the socket (2), one end of the first clamping block is elastically connected to the bottom end of the socket (2), the inner side of the first clamping block faces one side of the transmission shaft (11), and when the brush head (3) is pulled out to be separated from the socket (2), the brush head (3) pries the first clamping block toward the transmission shaft (11) to be tightened, so as to enhance the fixing force between the socket (2) and the transmission shaft (11).
2. The electric toothbrush according to claim 1, characterized in that: The sleeve (2) is provided with a first arc-shaped clamping boss (22), the outer side of the first clamping block is provided with a second arc-shaped clamping boss (211), the first arc-shaped clamping boss (22) and the second arc-shaped clamping boss (211) are surrounded to form a clamping ring, and an annular clamping groove (31) is provided on the inner side wall of one end of the brush head (3), and the annular clamping groove (31) is clamped and connected with the clamping ring.
3. The electric toothbrush according to claim 1, characterized in that: An arc surface (212) is provided on the inner side of the first clamping block, and the arc surface (212) faces one side of the transmission shaft (11).
4. The electric toothbrush according to claim 3, characterized in that: A first anti-slip panel (2121) is provided on the arc surface (212), and a gap exists between the first anti-slip panel (2121) and the transmission shaft (11).
5. The electric toothbrush according to claim 4, characterized in that: The first anti-slip panel (2121) is provided with a plurality of anti-slip protrusion structures (21211), and the plurality of anti-slip protrusion structures (21211) are arranged in sequence.
6. The electric toothbrush according to claim 1, characterized in that: One end of the first clamping block is provided with an elastic connection end (213), and the elastic connection end (213) is fixedly connected to the bottom end of the sleeve (2).
7. The electric toothbrush according to claim 1, characterized in that: The sleeve (2) is also provided with a second clamping block (23), the second clamping block (23) is aligned with the first clamping block in upper and lower positions, one end of the second clamping block (23) is elastically connected to one side of the sleeve (2), and the other end of the second clamping block (23) extends toward the first clamping block, and the brush head (3) presses the outer side of the second clamping block (23) so that the second clamping block (23) is tightened toward the transmission shaft (11).
8. The electric toothbrush according to claim 7, characterized in that: A pressing block (32) is provided on the inner side wall of one end of the brush head member (3), and the pressing block (32) abuts against the outer side of the second clamping block (23).
9. The electric toothbrush according to claim 7, characterized in that: A second anti-slip panel (231) is provided on the inner side of the second clamping block (23), and the second anti-slip panel (231) is tightly connected to the transmission shaft (11).
10. The electric toothbrush according to claim 1, characterized in that: The sweeping angle range of the brush head (3) is -20° to +20°, and the vibration frequency of the electric handle (1) is 18,000-24,000 revolutions per minute.