Electric toothbrush vibration structure and electric toothbrush

Abstract

The utility model discloses an electric toothbrush vibration structure and an electric toothbrush. The electric toothbrush vibration structure comprises an inner bracket, a micro motor and a connecting shaft, the inner bracket comprises a lower bracket part and an upper bracket part, the upper bracket part is provided with a mounting position, and the upper bracket part and the lower bracket part are connected through a connecting part; a connecting shaft is fixed to the upper support part, and the connecting position of the upper support part and the connecting shaft is connected with the handle through damping soft rubber. The connecting shaft penetrates through the damping soft rubber and extends out of the handle to be connected with the brush head, and vibration force of the micro motor is transmitted to the brush head through the upper support part and the connecting shaft. A connecting shaft is fixed with an upper support part, penetrates through damping soft rubber, extends out of a handle and is connected with a brush head; the brush head is driven to vibrate through the connecting shaft under the action of the micro motor, so that the vibration transmission process is simplified, and the vibration transmission efficiency is improved; the upper support part and the lower support part are connected through the connecting part, vibration transmitted to the handle is effectively reduced, and the problem that the handle serves as a vibration part, and a user holds the handle to feel numb is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, and more specifically to an electric toothbrush vibration structure and an electric toothbrush. Background Art

[0002] The electric toothbrushes on the market that use hollow cup motors as vibration sources all work on the principle that the hollow cup motor vibrates, and the vibration is transmitted to the handle and the connecting shaft or plastic shaft on the handle through the rigid contact between the bracket wrapped around the motor and the handle, and then the vibration of the connecting shaft or plastic shaft drives the brush head to vibrate. This structure has a complex vibration transmission process and low vibration transmission efficiency. At the same time, the handle also serves as a vibration part, which affects the user experience. In the prior art, for example, Chinese Patent No.: 201210237305.5 discloses a vibration reduction structure of a sonic toothbrush, including a hand The handle, the toothbrush head body and the micro motor, a bracket is fixed inside the handle, the bracket has an upper swing arm and a lower control panel, the micro motor is fixed to the upper swing arm, the handle has an upper transmission rod and a rear body, the upper transmission rod and the rear body are flexibly connected by a second vibration-damping rib; although this prior art can prevent the vibration of the micro motor from being transmitted to the rear body when it resonates, thereby reducing the vibration of the handle, the upper transmission rod and the handle are connected by the second vibration-damping rib and are a whole, the micro motor is located in the inner cavity of the upper transmission rod, protruding from the handle, resulting in a thicker brush head as a whole.

[0003] Therefore, the applicant improves the prior art. Utility Model Content

[0004] In view of this, the utility model provides an electric toothbrush vibration structure and an electric toothbrush.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the utility model discloses a vibration structure of an electric toothbrush, which is installed on the handle of the electric toothbrush and drives the brush head of the electric toothbrush to vibrate, including: an inner bracket, a micro motor and a connecting shaft; the inner bracket includes: a lower bracket part and an upper bracket part, the upper bracket part is provided with a mounting position for assembling the micro motor, and the upper bracket part and the lower bracket part are connected by an elastic connecting part; the upper bracket part is fixed with a connecting shaft, and the connection between the upper bracket part and the connecting shaft is connected to the handle through a vibration-damping soft rubber; the connecting shaft passes through the vibration-damping soft rubber and extends out of the handle to be connected to the brush head, and the vibration force of the micro motor is transmitted to the brush head through the upper bracket part and the connecting shaft.

[0006] The utility model provides a connecting shaft on the upper bracket part, the connecting shaft is fixed to the upper bracket part, the connecting shaft passes through the vibration-damping soft rubber and extends out of the handle to be connected to the brush head; when the micro motor is in operation, the brush head is driven to vibrate through the upper bracket part and the connecting shaft, which simplifies the vibration transmission process and improves the vibration transmission efficiency; the upper bracket part and the lower bracket part are connected by the connecting part, which effectively reduces the vibration transmission to the handle and solves the problem that the handle also serves as the vibration part and the user's hands become numb when holding the handle; the inner bracket and the micro motor are both installed inside the handle, and the brush head is only connected to the connecting shaft, so the entire brush head structure is simpler, the volume is smaller, and the replacement is faster, and the brush head can be directly pulled out and replaced.

[0007] As a preferred solution of the utility model, the upper bracket part is provided with a mounting part, the mounting part is provided with a first hole, the vibration-damping soft rubber is coated on the outside of the mounting part, the vibration-damping soft rubber is provided with a second hole, the first hole and the second hole correspond to each other, one end of the connecting shaft passes through the second hole and is inserted into the first hole; the utility model fills the gap between the mounting part and the inner wall of the handle with the vibration-damping soft rubber, which plays a supporting role and achieves the purpose of vibration reduction, effectively reducing the transmission of vibration to the handle; the vibration-damping soft rubber has a simple structure and is easy to install.

[0008] As a preferred solution of the utility model, the outer wall of the connecting shaft is provided with a convex rib, the inner wall of the first hole is provided with a groove, and the convex rib cooperates with the groove; or

[0009] The outer wall of the connecting shaft is provided with a groove, and the inner wall of the first hole is provided with a convex rib, and the groove cooperates with the convex rib; the connecting shaft and the connecting part of the utility model adopt the method of matching the groove and the convex rib, the connection is more stable, and the connecting shaft is effectively prevented from being pulled out of the upper bracket part when the brush head is replaced.

[0010] As a preferred solution of the utility model, the handle is provided with an opening, the connecting shaft passes through the opening and extends out of the handle, and the vibration-damping soft rubber seals the opening of the handle;

[0011] The outer wall of the vibration-damping soft rubber is provided with tendons, and the inner part of the handle is provided with tendon grooves, and the tendons cooperate with the tendon grooves; or

[0012] The outer wall of the vibration-damping soft rubber is provided with rib grooves, and ribs are provided inside the handle, and the ribs cooperate with the rib grooves. Through the cooperation of the ribs and the rib grooves, the utility model has a more compact installation structure, is not easy to separate, and can prevent liquid from entering the handle from the opening at the top of the handle.

[0013] As a preferred solution of the utility model, the shape of the connecting part is any one of a straight line, an S shape, and a C shape. In the utility model, the connecting part mainly connects the upper bracket part and the lower bracket part, plays a supporting role, and reduces the contact area between the upper bracket part and the lower bracket part, effectively reducing the upper bracket part from transmitting vibration to the lower bracket part, thereby reducing the vibration transmitted to the handle.

[0014] As a preferred solution of the utility model, the upper bracket part, the lower bracket part and the connecting part are integrally formed, and the connecting part is connected to the bottom of the upper bracket part and the top of the lower bracket part;

[0015] The mounting position is a C-shaped groove, the micro motor is mounted in the C-shaped groove, the upper bracket part is provided with a support part, and the support part supports the micro motor; the inner bracket in the utility model adopts an integrated molding method, the production process is simple, and the assembly steps are reduced; the C-shaped groove formed on the upper bracket part can clamp the micro motor, and the bottom of the micro motor is supported by the support part, which is more stable and can be installed, and the connecting shaft can be effectively driven to vibrate when the micro motor is running.

[0016] The second aspect of the utility model provides an electric toothbrush, comprising: a handle and a brush head, and also comprising the electric toothbrush vibration structure.

[0017] As a preferred solution of the utility model, the inner bracket is installed in the handle, and the lower bracket is installed with a battery and a counterweight block, and the counterweight block is located at the end of the handle away from the brush head; the battery in the utility model is a storage battery, and the counterweight block is mainly used to increase the weight at the end of the handle to move the center of gravity of the electric toothbrush downward to prevent the problem that the head is heavy and the tail is light, the electric toothbrush is not easy to stand upright, and is easy to tip over.

[0018] As a preferred solution of the utility model, the brush head is installed at the first end of the handle, and the tail cover is installed at the second end of the handle, and the tail cover is provided with a waterproof breathable membrane and a sealing ring; the waterproof breathable membrane can effectively prevent water vapor from entering the interior of the handle, and at the same time, the gas generated by battery charging can be discharged through the waterproof breathable membrane to prevent gas accumulation and explosion.

[0019] Other beneficial technical effects of the utility model are embodied in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 An exploded view of the electric toothbrush in the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the electric toothbrush in the utility model;

[0023] Figure 3 This is a schematic diagram of the combination of the inner bracket, the connecting shaft and the micro motor in the utility model;

[0024] Figure 4 This is a schematic diagram of the first structure of the connecting part in the utility model;

[0025] Figure 5 This is a schematic diagram of the second structure of the connecting part in the utility model;

[0026] Figure 6 This is a third structural schematic diagram of the connecting part in the utility model.

[0027] Description of reference numerals:

[0028] Brush head 100; connecting shaft 110; handle 200; tendon 201; tail cover 210; waterproof breathable membrane 220; sealing ring 230; inner bracket 300; upper bracket part 310; C-shaped groove 311; support part 312; lower bracket part 320; connecting part 330; mounting part 340; supporting ring body 341; micro motor 400; circuit board 510; battery 520; counterweight block 530; vibration-damping soft rubber 600; tendon groove 601. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0030] Embodiment 1:

[0031] Electric toothbrush vibration structure, please refer to Figure 1-3 As shown, the electric toothbrush has a brush head 100 and a handle 200 , and the vibration structure of the electric toothbrush includes: an inner bracket 300 , a micro motor 400 and a connecting shaft 110 , the inner bracket 300 and the micro motor 400 are installed in the handle 200 , and the connecting shaft 110 is fixed to the inner bracket 300 and extends out of the handle 200 to connect with the brush head 100 .

[0032] The handle 200 is designed to be in a stick shape for easy gripping by the user and may be made of plastic. A cavity is formed inside the handle 200, in which components such as the inner bracket 300 may be installed. A waterproof structure is provided at the top opening and the bottom opening of the handle 200 to prevent water from entering and damaging the internal components of the handle 200.

[0033] The brush head 100 is detachably plugged into the top of the handle 200. The brush head 100 is provided with bristles for cleaning teeth. After a period of use, the brush head 100 is replaced and the handle 200 is retained, thereby saving costs and reducing waste of resources.

[0034] The inner bracket 300 includes a lower bracket portion 320 and an upper bracket portion 310 . The upper bracket portion 310 is provided with an installation position for assembling the micro motor 400 . The upper bracket portion 310 and the lower bracket portion 320 are connected via an elastic connecting portion 330 .

[0035] The inner bracket 300 mainly acts as a carrier. The components inside the handle 200, such as the micro motor 400, the circuit board 510, the battery, etc., can be installed on the inner bracket 300. The inner bracket 300 is used as a support inside the handle 200 to facilitate the layout and installation of the components.

[0036] The micro motor 400 is installed on the upper bracket part 310, and the upper bracket part 310 is fixed with a connecting shaft 110. The connection between the upper bracket part 310 and the connecting shaft 110 is connected to the handle 200 through the vibration-damping soft rubber 600. After the connecting shaft 110 passes through the vibration-damping soft rubber 600 and extends upward from the handle 200, it is connected to the brush head 100; when the micro motor 400 is running, it transmits vibration to the upper bracket part 310, and then from the upper bracket part 310 to the connecting shaft 110, and then to the brush head 100, which simplifies the vibration transmission process, improves the vibration transmission efficiency, and achieves the purpose of efficient vibration of the electric toothbrush.

[0037] In order to reduce the vibration of the handle 200, the connection between the upper bracket part 310 and the connecting shaft 110 is connected to the handle 200 through the vibration-damping soft rubber 600. When the vibration of the upper bracket part 310 is transmitted to the vibration-damping soft rubber 600, it is absorbed by the vibration-damping soft rubber 600, thereby effectively reducing the vibration transmitted to the handle 200.

[0038] like Figure 2 As shown, the inner bracket 300 is installed inside the handle 200, and the upper bracket part 310 is close to the top of the handle 200 and close to the brush head 100, which can reduce the required length of the connecting shaft 110. One end of the connecting shaft 110 is inserted into the upper bracket part 310, and the other end is inserted into the brush head 100 through the vibration-damping soft rubber 600 and the opening at the top of the handle 200. When the micro motor 400 is running, the vibration is transmitted to the brush head 100 through the upper bracket part 310 and the connecting shaft 110.

[0039] The upper bracket portion 310 and the inner wall of the handle 200 are connected by the vibration-damping soft rubber 600, so that the upper bracket portion 310 is supported by the vibration-damping soft rubber 600 and the vibration transmitted to the handle 200 is reduced, thereby reducing the vibration of the handle 200; a connecting portion 330 is set between the bottom of the upper bracket portion 310 and the top of the lower bracket portion 320. The connecting portion 330 mainly serves to connect the upper bracket portion 310 and the lower bracket portion 320, but can also reduce the micro motor 400 from transmitting vibration to the lower bracket portion 320, thereby reducing the vibration transmitted to the handle 200 through the lower bracket portion 320.

[0040] In this embodiment, the upper bracket portion 310 , the micro motor 400 , and the vibration-damping soft rubber 600 are all disposed inside the handle 200 , and only the upper end of the connecting shaft 110 is inserted into the brush head 100 , thereby effectively reducing the volume of the brush head 100 .

[0041] The connecting shaft 110 may be a metal shaft, which has high hardness and is not easily deformed, and can effectively transmit vibration to the brush head 100 .

[0042] In one embodiment, the upper bracket portion 310 is provided with a mounting portion 340 at one end close to the brush head 100, and the mounting portion 340 is provided with a first hole position. The vibration-damping soft rubber 600 is covered on the outside of the mounting portion 340, and the vibration-damping soft rubber 600 is provided with a second hole position. The positions of the first hole position and the second hole position correspond to each other, and one end of the connecting shaft 110 passes through the second hole position and is inserted into the first hole position; the connecting shaft 110 is fixedly connected to the mounting portion 340.

[0043] like Figure 1 and Figure 3 As shown, the mounting portion 340 is columnar, and a supporting ring body 341 is provided at the bottom of the mounting portion 340. The outer diameter of the supporting ring body 341 is larger than the bottom hole diameter of the vibration-damping soft rubber 600, so that the vibration-damping soft rubber 600 can be supported on the supporting ring body 341 to prevent the vibration-damping soft rubber 600 from being pushed downward and separated from the mounting portion 340; a groove can be provided on the peripheral wall of the mounting portion 340, and a convex portion can be provided on the inner hole wall of the vibration-damping soft rubber 600. Through the cooperation of the groove and the convex portion, the vibration-damping soft rubber 600 and the mounting portion 340 are more tightly connected, thereby enhancing the internal waterproof performance of the handle 200.

[0044] Furthermore, the outer wall of the connecting shaft 110 is provided with a convex rib, and the inner wall of the first hole is provided with a groove, and the convex rib cooperates with the groove; or the outer wall of the connecting shaft 110 is provided with a groove, and the inner wall of the first hole is provided with a convex rib, and the groove cooperates with the convex rib, so that the connecting shaft 110 is more tightly installed in the first hole.

[0045] like Figure 1-2 As shown, the connecting shaft 110 and the upper bracket part 310 are fixedly connected. If the upper bracket part 310 is made of plastic material, the lower end of the connecting shaft 110 and the mounting part 340 can be injection molded into one body, which reduces the installation steps and effectively prevents the connecting shaft 110 from being pulled out;

[0046] Alternatively, the connecting shaft 110 is inserted into the mounting portion 340 , and after the insertion, the connecting shaft 110 and the mounting portion 340 cooperate with each other through ribs and grooves, which effectively prevents the connecting shaft 110 from automatically withdrawing from the first hole position due to vibration.

[0047] In one embodiment, the vibration-damping soft rubber 600 seals the opening of the handle 200; ribs are arranged on the outer wall of the vibration-damping soft rubber 600, and rib grooves are arranged inside the handle 200, and the ribs cooperate with each other; or rib grooves are arranged on the outer wall of the vibration-damping soft rubber 600, and ribs are arranged inside the handle 200, and the ribs cooperate with each other.

[0048] Specifically, Figure 2 As shown, a rib 201 is arranged downward around the opening at the top of the handle 200 inside the handle 200, and the vibration-damping soft rubber 600 is provided with a rib groove 601 with an opening facing upward, and the rib 201 is inserted into the rib groove 601 to better play a waterproof and sealing role.

[0049] In one embodiment, if Figure 4-6 As shown, the shape of the connecting portion 330 is any one of a straight line, an S shape, and a C shape;

[0050] One end of the connecting portion 330 is connected to the bottom of the upper bracket portion 310 , and the other end is connected to the top of the lower bracket portion 320 , so as to connect the upper bracket portion 310 and the lower bracket portion 320 ;

[0051] like Figure 3 As shown, the width of the connecting portion 330 from left to right is smaller than the width of the upper bracket portion 310 and the lower bracket portion 320, and the contact area between the connecting portion 330 and the upper bracket portion 310 and the lower bracket portion 320 is relatively small, which can reduce vibration transmission more than the traditional large-area connection, thereby reducing the vibration transmission of the micro motor 400 to the lower bracket portion 320, and further reducing the vibration transmission to the handle 200 through the lower bracket portion 320.

[0052] Furthermore, the upper bracket portion 310, the lower bracket portion 320 and the connecting portion 330 are integrally formed, thereby reducing the number of assembly steps.

[0053] The upper bracket part 310 is not in direct contact with the inner wall of the handle 200 . The bottom of the upper bracket part 310 is connected to the lower bracket part 320 via the connecting part 330 , and the top of the upper bracket part 310 is indirectly connected to the handle 200 via the vibration-damping soft rubber 600 , which effectively reduces the transmission of vibration to the handle 200 .

[0054] Furthermore, the installation position is a C-shaped groove 311, and the micro motor 400 is installed in the C-shaped groove 311. Figure 1 As shown, a support portion 312 is provided below the C-shaped groove 311 , and the support portion 312 supports the bottom of the micro motor 400 , so that the micro motor 400 can be stably installed on the upper bracket portion 310 . After installation, the power shaft of the micro motor 400 faces the installation portion 340 .

[0055] Embodiment 2:

[0056] An electric toothbrush comprises a handle 200 and a brush head 100. The vibration structure of Example 1 is installed in the handle 200.

[0057] Furthermore, the inner bracket 300 is installed in the handle 200, and the lower bracket part 320 is installed with a battery 520 and a counterweight 530, and the counterweight 530 is located at one end of the handle 200 away from the brush head 100, such as Figure 1 As shown, the counterweight 530 is close to the lower end of the handle 200, which can move the center of gravity of the entire electric toothbrush downward, making the electric toothbrush more stable when standing upright and not easy to fall over; the battery 520 and the circuit board 510 are electrically connected to supply power to the entire electric toothbrush.

[0058] A brush head 100 is installed at the first end (i.e., the top) of the handle 200, and a tail cover 210 is provided at the second end (i.e., the bottom) of the handle 200. The tail cover 210 is provided with a waterproof breathable membrane 220 and a sealing ring 230; the sealing ring 230 seals the tail cover 210 and the bottom of the handle 200; the tail cover 210 is provided with an opening for installing the waterproof breathable membrane 220, and the waterproof breathable membrane 220 can prevent water vapor from entering the interior of the handle 200, and can effectively discharge the gas generated during battery charging to prevent gas accumulation and explosion.

[0059] When in use, the connecting shaft 110 is inserted into the brush head 100, and the micro motor 400 is controlled to operate through the switch on the handle 200. The vibration of the micro motor 400 is transmitted to the upper bracket part 310 and the connecting shaft 110, and finally to the brush head 100, driving the brush head 100 to vibrate at high frequency, thereby simplifying the vibration transmission process and improving the vibration transmission efficiency.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric toothbrush vibration structure, which is installed on the handle of the electric toothbrush and drives the brush head of the electric toothbrush to vibrate, and is characterized by: include: Inner bracket, micro motor and connecting shaft; The inner bracket comprises: a lower bracket part and an upper bracket part, the upper bracket part is provided with an installation position for assembling the micro motor, and the upper bracket part and the lower bracket part are connected by an elastic connecting part; The upper bracket part is fixed with a connecting shaft, and the connection between the upper bracket part and the connecting shaft is connected to the handle through a vibration-damping soft rubber; The connecting shaft passes through the vibration-damping soft rubber and extends out of the handle to be connected to the brush head. The vibration force of the micro motor is transmitted to the brush head through the upper bracket part and the connecting shaft.

2. The electric toothbrush vibration structure according to claim 1, characterized in that: The upper bracket part is provided with a mounting part, the mounting part is provided with a first hole, the vibration-damping soft rubber is covered on the outside of the mounting part, the vibration-damping soft rubber is provided with a second hole, the first hole and the second hole correspond to each other, one end of the connecting shaft passes through the second hole and is inserted into the first hole.

3. The electric toothbrush vibration structure according to claim 2, characterized in that: The outer wall of the connecting shaft is provided with a convex rib, the inner wall of the first hole is provided with a groove, and the convex rib cooperates with the groove; or The outer wall of the connecting shaft is provided with a groove, the inner wall of the first hole is provided with a convex rib, and the groove cooperates with the convex rib.

4. The electric toothbrush vibration structure according to claim 1, characterized in that: The handle is provided with an opening, the connecting shaft passes through the opening and extends out of the handle, and the vibration-damping soft rubber seals the opening of the handle; The outer wall of the vibration-damping soft rubber is provided with tendons, and the inner part of the handle is provided with tendon grooves, and the tendons cooperate with the tendon grooves; or The outer wall of the vibration-damping soft rubber is provided with tendon grooves, and tendons are provided inside the handle, and the tendons are matched with the tendon grooves.

5. The electric toothbrush vibration structure according to claim 1, characterized in that: The shape of the connecting portion is any one of a straight line, an S shape, and a C shape.

6. The electric toothbrush vibration structure according to any one of claims 1 to 4, characterized in that: The upper bracket part, the lower bracket part and the connecting part are integrally formed, and the connecting part is connected to the bottom of the upper bracket part and the top of the lower bracket part; The installation position is a C-shaped groove, the micro motor is installed in the C-shaped groove, and the upper bracket part is provided with a supporting part, which supports the micro motor.

7. Electric toothbrush, including: The handle and brush head are characterized by comprising the electric toothbrush vibration structure according to any one of claims 1 to 5.

8. The electric toothbrush according to claim 7, characterized in that: The inner bracket is installed in the handle, and the lower bracket part is installed with a battery and a counterweight block, and the counterweight block is located at an end of the handle away from the brush head.

9. The electric toothbrush according to claim 7, characterized in that: The brush head is installed at the first end of the handle, and a tail cover is installed at the second end of the handle. The tail cover is provided with a waterproof and breathable membrane and a sealing ring.

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