Electric toothbrush

Abstract

The utility model discloses an electric toothbrush which comprises a handle shell, and a button is arranged on the handle shell. The bracket comprises a motor fixing part and a battery fixing part; the position of the first abutting part on the support corresponds to the battery fixing part, the position of the second abutting part on the support corresponds to the motor fixing part, and the first abutting part and the second abutting part both abut against the handle shell; the circuit board can trigger the feedback area on the circuit board when the key is stressed; the hardness of the first abutting part is smaller than that of the second abutting part; or the first abutting part is in elastic contact with the handle shell, and the second abutting part is in rigid contact with the handle shell. Therefore, through the arrangement of the electric toothbrush, the motor and the handle shell can generate an indirect connection relation with relatively high hardness, so that the position accuracy and the supporting stability of related structures between the motor and the handle shell are ensured, and on the other hand, the battery and the handle shell can generate an indirect connection relation with relatively low hardness; therefore, the vibration energy transmitted by the motor is effectively absorbed.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, and in particular to an electric toothbrush. Background Technology

[0002] Electric toothbrushes, as household appliances for oral care, work by being driven by a motor, which in turn moves the brush head to clean the mouth. To ensure a certain angle of oscillation and vibration frequency, a powerful motor is required, especially during cleaning movements exceeding 10°.

[0003] In related technologies, electric toothbrushes have circuit boards mounted on the motor bracket. The vibration of the motor causes slight deformation of both the circuit board and the handle shell of the electric toothbrush. This can cause interference and uncertainty to the button trigger circuit board, often resulting in the button function failing to be triggered, thus causing the electric toothbrush to have unresponsive buttons. Therefore, this technology needs to be improved. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an electric toothbrush that allows for a relatively rigid indirect connection between the motor and the handle housing, thereby ensuring the positional accuracy and support stability of the related structures between them. Simultaneously, it allows for a relatively rigid indirect connection between the battery and the handle housing, thereby effectively absorbing the vibrational energy transmitted from the motor.

[0005] An electric toothbrush according to a first aspect of the present invention includes: a handle housing with a button; a bracket disposed inside the handle housing, the bracket including a motor fixing part for fixing a motor and a battery fixing part for fixing a battery; the bracket further includes a first abutting part and a second abutting part, the first abutting part being positioned corresponding to the battery fixing part and the second abutting part being positioned corresponding to the motor fixing part, both the first abutting part and the second abutting part abutting against the handle housing; a circuit board disposed on the bracket, the circuit board having a feedback area; the button being able to trigger the feedback area when subjected to force to control the electric toothbrush; the hardness of the first abutting part being less than the hardness of the second abutting part; or the first abutting part being in elastic contact with the handle housing and the second abutting part being in rigid contact with the handle housing.

[0006] Therefore, by designing this electric toothbrush, on the one hand, the motor and the handle shell can be connected in a relatively rigid indirect connection, thereby ensuring the positional accuracy and support stability of the related structures between them. On the other hand, the battery and the handle shell can be connected in a relatively rigid indirect connection, thereby effectively absorbing the vibration energy transmitted from the motor.

[0007] In some examples of this utility model, the bracket includes: a bracket body, the bracket body including a motor fixing part and a battery fixing part; a first vibration damping member, the first vibration damping member being disposed on the battery fixing part; wherein, the first vibration damping member is provided with a first abutting part, the bracket body is provided with a second abutting part, and the hardness of the first vibration damping member is less than the hardness of the bracket body.

[0008] This arrangement allows the first abutment, with its lower hardness, to effectively absorb vibration energy through its deformable properties, thus reducing the vibration transmitted from the motor to the user's hand. The second abutment, with its higher mechanical strength and hardness, provides stable support and fixation between the bracket and the handle shell, ensuring the positional accuracy and stability of the related structures. When the electric toothbrush is working, although the motor vibrates, the second abutment ensures that the bracket corresponding to the motor makes relatively hard contact with the handle shell. The bracket, corresponding to the motor, and the handle shell undergo slight displacement in near-synchronous motion, causing the buttons on the handle to vibrate in near-synchronous motion with the circuit board. This ensures that the buttons deform relative to the circuit board whenever they are pressed, providing sensitive feedback whether the electric toothbrush is stopped or in operation, improving the accuracy and stability of the button function and benefiting the use of the electric toothbrush. Furthermore, the first abutment makes flexible contact with the handle shell, balancing the vibration at the handle and improving the stability of button triggering and user comfort.

[0009] In some examples of this utility model, a first damping member is provided on the side of the motor fixing part away from the handle housing. The first damping member extends from the inner side of the motor fixing part away from the handle housing to the side of the battery fixing part near the handle housing. The first damping member on the side of the motor fixing part away from the handle housing is used to contact the motor. The first damping member on the side of the battery fixing part near the handle housing is used to contact the handle housing.

[0010] This arrangement serves two purposes: firstly, it allows the portion of the first damping component near the motor mounting part to create a buffering and vibration-damping effect between the motor and the main support body, absorbing the vibration energy transmitted from the motor to the motor mounting part, thereby further reducing the overall vibration of the electric toothbrush and improving user comfort; secondly, it allows the portion of the first damping component near the battery mounting part to abut against the battery mounting part and the handle housing, facilitating the absorption of vibrations transmitted to the handle housing; and thirdly, the first damping component extends from the inside out, from the motor mounting part to the battery mounting part, forming a large-area, multi-angle damping effect, which further reduces the interference of motor vibration on the handle.

[0011] In some examples of this utility model, the main body of the bracket is a rigid plastic part, and the first damping part is a soft rubber part or a silicone part. The first damping part is integrally injection molded with the main body of the bracket.

[0012] With this arrangement, the main body of the bracket is made of rigid plastic, which on the one hand prevents the insulation of current, and on the other hand provides a stable support structure for related structures, capable of withstanding large mechanical stress, ensuring the positional stability and reliability of related structures installed on the main body of the bracket. The first damping component can undergo large elastic deformation when subjected to external force, effectively absorbing and weakening vibration energy, thereby reducing vibration transmission and improving user comfort.

[0013] In some examples of this utility model, the first damping member is respectively disposed on opposite sides of the support body, and each side of the first damping member is provided with at least two first abutting portions arranged along the axial direction of the support; and / or the opposite sides of the support body are respectively provided with at least two second abutting portions arranged along the axial direction of the support.

[0014] With this arrangement, at least two first abutment parts on each side can effectively abut the handle shell in the circumferential direction of the electric toothbrush, so that the bracket and the handle shell support each other in the width direction of the electric toothbrush. Regardless of the posture, the handle shell and the bracket can be relatively stable, which is conducive to the triggering of the button and further improves the stability of the button function. At least two second abutment parts on both sides can further buffer and dampen vibration in the circumferential direction, reduce the vibration transmitted to the handle shell, and balance the stability of button triggering and the comfort brought by vibration damping.

[0015] In some examples of this utility model, the electric toothbrush further includes: a pressure-sensitive module located in the feedback area and electrically connected to the circuit board and disposed opposite to the button; and a button soft rubber disposed between the pressure-sensitive module and the button to transmit the touch action of the button to the pressure-sensitive module.

[0016] With this arrangement, the pressure-sensitive module can improve the stability and sensitivity of the button functions, and can smoothly control the electric toothbrush cleaning action to turn on or off.

[0017] In some examples of this utility model, the circuit board and the button are bonded and fixed with soft adhesive.

[0018] With this arrangement, the soft rubber button is located between the circuit board and the handle shell. The bonding and fixation between the soft rubber button and the circuit board ensures that when the motor vibrates, the handle shell, the soft rubber button, and the circuit board deform in a basically synchronous manner. The soft rubber button fills the space between the handle shell and the circuit board, further improving the sensitivity and accuracy of button triggering.

[0019] In some examples of this utility model, the electric toothbrush further includes: a fixing frame, which is disposed on the circuit board and surrounds the pressure-sensitive module, and the fixing frame and the button are bonded and fixed with soft adhesive.

[0020] This arrangement allows the mounting bracket to forcibly fix the position of the button rubber, preventing the button rubber from shifting slightly under long-term exposure to frequent vibrations from the motor. This ensures that the button and the pressure-sensitive module always remain in their initial corresponding positions, thereby guaranteeing the button's sensitivity.

[0021] In some examples of this utility model, the button soft rubber includes a fixing part and a supporting part. The fixing part is fixed relative to the circuit board or bracket, and the supporting part protrudes from the fixing part and is close to the handle shell relative to the fixing part. The contact area between the supporting part and the handle shell is smaller than the area of ​​the fixing part.

[0022] With this arrangement, the motor vibration will be transmitted to the support part. Since the contact area between the support part and the handle shell is relatively smaller, the pressure of the motor vibration transmitted to the handle shell through the support part is smaller, thereby reducing the relative action between the bracket and the handle shell, that is, reducing the relative deformation between the handle shell and the bracket, reducing the interference of vibration on button triggering, and helping to solve the problem of the switch being difficult to trigger due to motor vibration.

[0023] In some examples of this utility model, a light-transmitting area is formed at the button; the electric toothbrush also includes: a light-emitting element, which is disposed on the circuit board and offset from the light-transmitting area so that the light emitted by the light-emitting element enters the light-transmitting area after being reflected by the handle housing.

[0024] With this arrangement, the light-emitting element will not directly illuminate the light-transmitting area, thus avoiding the generation of obvious light spots. Instead, the light reflected from the handle shell after the light-emitting element illuminates the handle passes through the light-transmitting area, making the light softer and providing a more comfortable visual experience for the user.

[0025] In some examples of this utility model, there are multiple light-emitting elements, which are located on opposite sides of the key rubber along the width direction of the circuit board and emit light in a direction away from the key rubber.

[0026] This arrangement reveals the precise location of the buttons, and the light on both sides of the buttons is more even, which improves the user's visual comfort.

[0027] In some examples of this utility model, a light-transmitting area is formed at the button; the electric toothbrush also includes: a light-emitting element, which is disposed on the circuit board; wherein, the light-emitting element is covered by a soft rubber cover on the button, and the light emitted by the light-emitting element is scattered to the light-transmitting area.

[0028] This arrangement reduces the light flux through the light-transmitting area and makes the light emission more uniform through the scattering of the soft rubber on the buttons. It also prevents the strong light emitted by the light source from shining directly on the buttons, thus ensuring that the light passes through the buttons evenly. This achieves a uniform and soft visual effect of the light ring around the buttons, reducing the stimulation of the light on the human eye.

[0029] In some examples of this utility model, a light processing element is also included, which is disposed inside the handle housing. The light emitted by the light-emitting element is scattered by the light processing element and then passes through the light-transmitting area. The light processing element is at least one of optical fiber and microlens array.

[0030] This arrangement ensures a smooth and even distribution of light, providing users with a soft visual experience.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a schematic diagram of the structure of an electric toothbrush according to an embodiment of the present utility model;

[0034] Figure 2 This is an exploded view of an electric toothbrush according to an embodiment of the present utility model;

[0035] Figure 3 This is a partial structural schematic diagram of an electric toothbrush according to an embodiment of the present utility model;

[0036] Figure 4 This is a schematic diagram of another part of the structure of the electric toothbrush according to an embodiment of the present utility model;

[0037] Figure 5 This is an exploded view of a portion of the structure of an electric toothbrush according to an embodiment of the present utility model;

[0038] Figure 6 This is an exploded view of another part of the structure of the electric toothbrush according to an embodiment of the present utility model;

[0039] Figure 7 yes Figure 6 Enlarged view of region A in the middle;

[0040] Figure 8 This is a cross-sectional view of an electric toothbrush according to an embodiment of the present utility model.

[0041] Figure label:

[0042] 100. Electric toothbrush;

[0043] 1. Handle shell;

[0044] 2. Bracket; 21. Motor mounting part; 22. Battery mounting part; 23. First abutment part; 24. Second abutment part; 25. Bracket body; 26. First vibration damping component;

[0045] 3. Circuit board; 4. Pressure-sensitive module; 5. Button soft rubber; 51. Fixing part; 52. Supporting part; 6. Light-emitting component; 61. Fixing frame; 62. Light processing element; 7. Battery; 8. Motor. Detailed Implementation

[0046] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0047] The following is for reference. Figures 1-8 The electric toothbrush 100 according to an embodiment of the present invention can make the motor 8 and the handle housing 1 have a relatively high rigidity indirect connection relationship, thereby ensuring the positional accuracy and support stability of the related structures between the two, and can also make the battery 7 and the handle housing 1 have a relatively low rigidity indirect connection relationship, thereby effectively absorbing the vibration energy transmitted from the motor 8.

[0048] Combination Figures 1-8 As shown, the electric toothbrush 100 according to the first aspect of this utility model includes a handle housing 1, a bracket 2, and a circuit board 3. The handle housing 1 forms the main external outline of the electric toothbrush 100 and protects the internal structure. The bracket 2 is fixed inside the handle housing 1 and provides support and mounting conditions for the internal structure (such as the circuit board 2, motor 8, and battery 7). The circuit board 3 connects electronic components into a specific functional electronic circuit according to circuit principles. The handle housing 1 is provided with buttons for controlling the electric toothbrush 100 to perform cleaning actions.

[0049] The handle housing 1 is equipped with buttons for the user to trigger, thereby controlling the electric toothbrush 100. In this embodiment, the buttons are touch buttons, meaning that a portion of the handle housing 1 is available for touch and pressing; it is understood that in other embodiments, the buttons may also be physical buttons, and there is no specific limitation, as long as the buttons can perform the control function.

[0050] Specifically, the bracket 2 is located inside the handle housing 1. The bracket 2 includes a motor fixing part 21 for fixing the motor 8 and a battery fixing part 22 for fixing the battery 7. This arrangement allows the motor 8 and the battery 7 to be stably mounted on the bracket 2, thereby ensuring the positional stability of the motor 8 and the battery 7 inside the handle housing 1. Furthermore, concentrating the motor 8 and the battery 7 on one bracket 2 can simplify the assembly process and reduce manufacturing costs.

[0051] Specifically, the bracket 2 is also provided with a first abutting part 23 and a second abutting part 24. The position of the first abutting part 23 corresponds to the battery fixing part 22, and the position of the second abutting part 24 corresponds to the motor fixing part 21. Both the first abutting part 23 and the second abutting part 24 abut against the handle housing 1.

[0052] The first abutment portion 23 and the second abutment portion 24 on the bracket 2 abut against the inner wall of the handle housing 1, and the first abutment portion 23 and the second abutment portion 24 correspond to the positions of the battery fixing portion 22 and the motor fixing portion 21, respectively. This allows the bracket 2 to form a force-bearing contact surface that contacts the inner wall of the handle housing 1 along the length direction of the handle housing 1, thereby enhancing the connection stability between the bracket 2 and the handle housing 1, improving the uniformity of force between the bracket 2 and the handle housing 1, avoiding local stress concentration problems, and improving the structural stability and service life of the bracket 2.

[0053] Furthermore, circuit board 3 is mounted on bracket 2, and circuit board 3 has a feedback area; when the button is pressed, the feedback area is triggered to control the electric toothbrush 100. The bracket 2 provides support for the circuit board 3, and when the button is pressed, it transmits the force to the feedback area on circuit board 3. The feedback area is triggered, and the electric toothbrush 100 performs specified actions (such as power on / off, and adjusting vibration levels) according to the triggered control program.

[0054] Alternatively, the hardness of the first abutment portion 23 is less than that of the second abutment portion 24. This arrangement allows the battery 7 to be connected to the handle housing 1 by a first abutment portion 23 with lower hardness (i.e., more flexible and easily deformable under force). The handle housing 1 corresponding to the battery 7 is typically located in the gripping area of ​​the human hand (the middle to rear part of the electric toothbrush 100). When the user uses the electric toothbrush 100, the motor 8 transmits a portion of the vibration energy to the battery 7 and battery fixing portion 22 through the motor fixing portion 21. The first abutment portion 23, with its lower hardness, can effectively absorb the vibration energy through its easily deformable characteristics. The vibration energy is absorbed, thereby reducing the vibration transmitted from the motor 8 to the user's hand. The position of the handle shell 1 corresponding to the motor 8 is the operation area (such as the button). When the user uses the electric toothbrush 100, the motor 8 transmits another part of the vibration energy to the handle shell 1 through the motor fixing part 21 and the second abutting part 24 in sequence. The second abutting part 24, which has a higher mechanical strength and hardness, can provide stable support and fixation between the bracket 2 and the handle shell 1, thereby ensuring the positional accuracy and stability of the relevant structure at this location and avoiding the risk of buttons and other components shifting and becoming insensitive during long-term use.

[0055] Alternatively, the first abutment portion 23 makes elastic contact with the handle housing 1, and the second abutment portion 24 makes rigid contact with the handle housing 1. The elastic contact effectively absorbs impact and vibration, reducing pressure on the contact surface, while the rigid contact offers high rigidity and stability, making it less prone to deformation or loosening.

[0056] As arranged as described above, the first abutting part 23 can effectively absorb the vibration energy transmitted by the motor 8 through elastic deformation, thereby reducing the vibration transmitted from the electric toothbrush 100 to the user's hand. The second abutting part 24 can make the motor fixing part 21 and the handle shell 1 form a rigid whole in a relatively large area. Compared with the traditional arrangement of fixing the motor to the outer periphery with soft glue (because the button noise cannot be completely and effectively filtered, and the vibration of the motor is transmitted to the button soft glue through the soft glue, at this time the vibration of the motor 8 and the vibration of the button soft glue 5 are close, so the basic noise of the button deformation and the basic noise brought by the motor vibration resonate at the same frequency, causing the button to make a small displacement and making the button insensitive, making it increasingly difficult for the user to press, especially the pressure-sensitive button, which is composed of small deformation, and the longer the motor works, the more data accumulates, the less effectively the pressure-sensitive module can distinguish and identify it. Long-term use will cause the button to make a small displacement compared to the original installation position), the embodiment in this case can ensure the positional accuracy and stability of the button, thereby ensuring the sensitivity and reliability of the button during long-term use, and thus improving the user experience.

[0057] Therefore, by setting the electric toothbrush 100, on the one hand, the motor 8 and the handle shell 1 can be connected in a relatively rigid indirect connection, thereby ensuring the positional accuracy and support stability of the related structures between them. On the other hand, the battery 7 and the handle shell 1 can be connected in a relatively rigid indirect connection, thereby effectively absorbing the vibration energy transmitted from the motor 8.

[0058] According to some optional embodiments of the present invention, combined with Figure 2 and Figure 3 As shown, the bracket 2 includes a bracket body 25 and a first vibration damping member 26. The bracket body 25 includes a motor fixing part 21 and a battery fixing part 22. The first vibration damping member 26 is disposed on the battery fixing part 22.

[0059] The bracket body 25 has a motor fixing part 21 and a battery fixing part 22 arranged sequentially along the length of the electric toothbrush 100. The first vibration damping member 26 is used to absorb and weaken vibration, thereby reducing the vibration transmitted from the electric toothbrush 100 to the user's hand and improving the user's comfort.

[0060] In detail, combined Figure 2 and Figure 3As shown, the first damping member 26 is provided with a first abutting part 23, and the bracket body 25 is provided with a second abutting part 24. The hardness of the first damping member 26 is less than that of the bracket body 25. With this arrangement, the first abutting part 23 with lower hardness on the first damping member 26 can effectively absorb vibration energy through its own deformable characteristics, thereby reducing the vibration transmitted from the motor 8 to the user's hand. The second abutting part 24 with higher hardness has higher mechanical strength and hardness, so it can provide stable support and fixation between the bracket 2 and the handle housing 1, thereby ensuring the positional accuracy and stability of the relevant structure.

[0061] When the electric toothbrush 100 is working, although the motor 8 will vibrate, the second abutment part 24 causes the bracket 2 corresponding to the motor 8 to make relatively hard contact with the handle shell 1. The bracket 2 and the handle shell 1 will make a slight displacement in a basically synchronous manner, so that the button on the handle shell 1 and the circuit board 3 will vibrate in a basically synchronous manner. This ensures that the button can deform relative to the circuit board 3 whenever it is pressed. Therefore, whether the electric toothbrush 100 is in a stopped state or a working state, the button can provide sensitive feedback, improve the accuracy and stability of the button function, and benefit the use of the electric toothbrush 100. In addition, the first abutment part 23 makes flexible contact with the handle shell 1, which balances the vibration at the handle and improves the stability of button triggering and user comfort.

[0062] Specifically, in combination Figure 2 and Figure 3 As shown, a first damping member 26 is provided on the side of the motor fixing part 21 away from the handle housing 1. The first damping member 26 extends from the inner side of the motor fixing part 21 away from the handle housing 1 to the side of the battery fixing part 22 near the handle housing 1. In this way, on the one hand, the part of the first damping member 26 near the motor fixing part 21 can form a buffering and damping effect between the motor 8 and the bracket body 25, that is, absorb the vibration energy transmitted from the motor 8 to the motor fixing part 21, thereby further reducing the overall vibration of the electric toothbrush 100 and improving the user's comfort. On the other hand, the part of the first damping member 26 near the battery fixing part 22 can abut against the battery 7 and the handle housing 1, so as to absorb the vibration energy transmitted from the motor 8 to the battery 7.

[0063] Furthermore, combined Figure 2 and Figure 3As shown, the first damping member 26 on the side of the motor fixing part 21 away from the handle housing 1 is used to contact the motor 8; the first damping member 26 on the side of the battery fixing part 22 near the handle housing 1 is used to contact the handle housing 1. This arrangement makes it easy for the first damping member 26 at the motor fixing part 21 to abut against the motor 8 and the handle housing 1, thereby effectively absorbing the vibration energy of the motor 8, reducing the vibration transmitted from the motor 8 to the handle housing 1, and thus improving the comfort of using the electric toothbrush 100.

[0064] In summary, the first damping component 26 extends from the inside out, from the motor fixing part 21 to the battery fixing part 22 (roughly spanning the entire length of the bracket 22), forming a large-area, multi-angle damping effect, which is more conducive to reducing the interference of motor 8 vibration on the handle.

[0065] In detail, the main body 25 of the support frame is a rigid plastic component, and the first damping component 26 is a soft rubber component or a silicone component. The rigid plastic component has high hardness and strength as well as electrical conductivity and insulation properties, such as polycarbonate (PC) and ABS (acrylonitrile-butadiene-styrene copolymer); while the soft rubber component or silicone component has lower hardness and good elasticity as well as electrical conductivity and insulation properties, such as natural rubber, synthetic rubber, and silicone.

[0066] The bracket body 25 is made of rigid plastic, which can insulate the current on the one hand, and provide a stable support structure for related structures on the other hand (able to withstand large mechanical stress), ensuring the positional stability and reliability of related structures installed on the bracket body 25. The first damping element 26, due to its low hardness, can undergo large elastic deformation relative to the bracket body 25 when subjected to external force, which can effectively absorb and weaken vibration energy, thereby reducing vibration transmission and improving user comfort.

[0067] Optionally, combined Figure 2 and Figure 3 As shown, the first damping component 26 and the support body 25 are integrally injection molded. The first damping component 26 and the support body 25 can be directly integrally injection molded. Compared with separate assembly, this can increase the overall consistency and structural stability of the first damping component 26 and the support body 25, thereby improving its working reliability. It can also reduce production processes, simplify assembly links, improve manufacturing efficiency, and thus save costs.

[0068] The handheld part of the electric toothbrush 100 is located at the middle and rear end. The vibration energy generated by the motor 8 is transmitted to the hand through the handle shell 1. The first damping component 26 is integrally injection molded with the bracket body 25. Its front end wraps around the motor 8 and can play a circumferential damping role for the motor 8. Its rear end extends to both sides of the bracket 2 and can play an overall damping role for the handle shell 1.

[0069] Specifically, in combination Figure 2 and Figure 3 As shown, the first damping member 26 is respectively disposed on opposite sides of the support body 25, and each side of the first damping member 26 is provided with at least two first abutting parts 23 arranged along the axial direction of the support 2.

[0070] As arranged as described above, at least two first abutting parts 23 on each side can better abut the handle housing 1 in the circumferential direction of the electric toothbrush 100, so that the bracket 2 and the handle housing 1 can better support each other in the circumferential direction of the electric toothbrush 100. No matter what posture they are in, the handle housing 1 and the bracket 2 can maintain a relatively stable position, which is conducive to the correct triggering of the button and further improves the stability of the button function.

[0071] For example, the first damping component 26 is designed to transmit vibration from a point to a surface. Through the local protrusion overpressure design, it plays a fixed connection role. When the motor 8 is working, the vibration will be transmitted and dispersed to the handle housing 1 through the point, thereby playing a vibration reduction role.

[0072] Optionally, combined Figure 2 and Figure 3 As shown, at least two second abutment portions 24 are respectively provided on opposite sides of the support body 25 along the axial direction of the support 2.

[0073] In other words, multiple second abutment portions 24 are provided at intervals along the axial direction (or length direction) of the bracket 2 on both sides of the bracket body 25. This increases the force contact area of ​​the second abutment portions 24 in the length and circumferential directions of the bracket 2, thereby further buffering and damping the vibration in the circumferential direction of the handle shell 1, reducing the vibration transmitted to the user's hand, and balancing the stability of button triggering and the comfort brought by vibration damping.

[0074] According to some optional embodiments of the present invention, combined with Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the handle housing 1 is provided with a button; the electric toothbrush 100 also includes a pressure-sensitive module 4 and a button soft rubber 5. The pressure-sensitive module 4 is located in the feedback area and is electrically connected to the circuit board 3. The pressure-sensitive module 4 is arranged opposite to the button, and the button soft rubber 5 is disposed between the pressure-sensitive module 4 and the button to transmit the touch action of the button to the pressure-sensitive module 4.

[0075] The pressure-sensitive module 4 enhances the stability and sensitivity of the button function. The circuit board 3 is connected to the pressure-sensitive module 4 via an electrical signal. When the user presses the button, the button transmits the pressing force to the pressure-sensitive module 4 through the button soft rubber 5. The circuit board 3 then transmits the action command of the pressure-sensitive module 4 to the motor 8 via an electrical signal. The motor 8 executes the corresponding action according to the control command transmitted by the electrical signal, thereby completing the conversion from electrical signal to action signal and successfully achieving the effect of controlling the cleaning action of the electric toothbrush 100 to be turned on or off.

[0076] Furthermore, the soft rubber 5 for the buttons is typically made of silicone or other polymer materials, possessing elasticity and toughness. It adheres tightly to the button surface, effectively preventing button wear. It also prevents dust and water from entering the electric toothbrush 100 through the gap between the button and the handle housing 1, ensuring the cleanliness and dryness of the interior. Additionally, it absorbs and disperses the sound generated by button clicks during use, thus reducing noise.

[0077] Specifically, in combination Figure 7 As shown, the electric toothbrush 100 also includes adhesive, which is bonded between the circuit board 3 and the button rubber 5. The adhesive connects the circuit board 3 and the button rubber 5 into a strong whole, ensuring the reliability of the connection between them. It also ensures that when the motor 8 vibrates, the handle housing 1, the button rubber 5, and the circuit board 3 deform synchronously. The button rubber 5 fills the space between the handle housing 1 and the circuit board 3, further improving the sensitivity and accuracy of button triggering. Furthermore, this connection method has good insulation, pressure resistance, bonding strength, and waterproof and dustproof properties, and is not easily detached under impact and vibration.

[0078] Furthermore, combined Figure 5 and Figure 7 As shown, the electric toothbrush 100 also includes a mounting bracket 61, which is disposed on the circuit board 3 and surrounds the pressure-sensitive module 4. Adhesive is bonded between the mounting bracket 61 and the button soft rubber 5.

[0079] Understandably, since the circuit board 3, the mounting bracket 61 and the key rubber 5 are connected as a whole, the mounting bracket 61 can forcibly fix the position of the key rubber 5, preventing the key rubber 5 from the risk of slight displacement under the long-term frequent vibration from the motor 8, thereby ensuring that the key and the pressure-sensitive module 4 always remain in the initial corresponding position, thus ensuring the sensitivity of the key.

[0080] Specifically, in combination Figure 2 , Figure 5 and Figure 7As shown, the button soft rubber 5 includes a fixing part 51 and a supporting part 52. The fixing part 51 is fixed relative to the circuit board 3 or the bracket 2. The supporting part 52 protrudes from the fixing part 51 and is close to the handle housing 1 relative to the fixing part 51. The contact area between the supporting part 52 and the handle housing 1 is smaller than the area of ​​the fixing part 51.

[0081] In other words, the fixing part 51 can firmly fix the button soft rubber 5 to a designated position on the circuit board 3 or the bracket 2, and the supporting part 52 protrudes towards the handle housing 1, which facilitates the user to press the supporting part 52. The contact area between the supporting part 52 and the handle housing 1 is small, which reduces its force-bearing area and increases the pressure applied by the user, thus reducing the force required when pressing the button. The fixing part 51 has a larger area, which increases the connection contact area between the button soft rubber 5 and the circuit board 3 or the bracket 2, thereby improving the overall connection strength and the positional stability of the button soft rubber 5.

[0082] For example, the vibration of motor 8 will be transmitted to the support part 52. Since the contact area between the support part 52 and the handle housing 1 is relatively smaller, the pressure transmitted from the vibration of motor 1 to the handle housing 1 through the support part 52 will be smaller, thereby reducing the relative action between the bracket 2 and the handle housing 1, that is, reducing the relative deformation between the handle housing 1 and the bracket 2, reducing the interference of vibration on button triggering, and helping to solve the problem of the switch being difficult to trigger due to the vibration of motor 1.

[0083] Optionally, in the above embodiments of this case, the pressure-sensitive module 4 can be bonded and fixed separately to the handle housing 1, so that the pressure-sensitive module 4 is separated from the mechanism. In this way, it is not affected by the mechanism (since the PCB and motor are mounted on the mechanism), and the pressure-sensitive module 4 can be better transmitted when the handle housing 1 is pressed and slightly deformed.

[0084] Furthermore, the supporting part 52 has a small protrusion on the side facing the handle housing 1. The small protrusion contacts the handle housing 1. When the motor 8 vibrates and causes the handle housing 1 to vibrate, the small contact area between the small protrusion and the handle housing 1 is small. This makes the overall vibration of the handle housing 1 less of an interference to the supporting part 52. In other words, the overall pressure on the small protrusion is small, which helps to solve the problem of the switch being difficult to trigger due to the vibration of the motor 8. When the pressure-sensitive button area of ​​the handle housing 1 is pressed by the user, it can also be smoothly transmitted through the small protrusion, and the switch can be correctly triggered (the switch on the pressure-sensitive module 4 requires a force of 2N to 10N to trigger).

[0085] Optionally, the pressure-sensitive module 4 identifies the switch of the electric toothbrush 100 by generating data through sensing micro-deformations. Micro-deformations are not only caused by pressing the button, but also by various factors, such as gripping the handle or changes in the pushing force during brushing. In this case, accidental touches need to be considered. Therefore, a solution can be adopted where the pressure-sensitive module 4 and the capacitive touch respond simultaneously to trigger the button. The capacitor is made of black silicone 50-80 degree material and has a resistor PB-160, 1-5 ohms. To trigger the button, the conductor must first contact the silicone button area before the button can be pressed to realize the function.

[0086] Furthermore, combined Figure 5 and Figure 7 As shown, a light-transmitting area is formed at the button; the electric toothbrush 100 also includes a light-emitting element 6, which is disposed on the circuit board 3. The light-emitting element 6 is offset relative to the light-transmitting area so that the light emitted by the light-emitting element 6 enters the light-transmitting area after being reflected by the handle housing 1.

[0087] Understandably, the light-emitting element 6 is used to emit light, which makes it easier for users to observe the button positions in dark environments. Furthermore, the light-emitting element 6 is offset from the light-transmitting area, so that the light-emitting element 6 does not directly illuminate the light-transmitting area, thus avoiding the production of obvious glaring light spots. Instead, the light emitted by the light-emitting element 6 is reflected by the handle shell 1 (absorbing some of the light) before being reflected back to the light-transmitting area, making the light passing through the light-transmitting area softer and improving the user's visual comfort.

[0088] In summary, since the light beam emitted by LED rings is relatively strong, direct illumination of the light-transmitting area in conventional keypads can easily produce light spots. However, the embodiment in this case can avoid direct illumination, thereby making the light softer and effectively improving the user's visual experience.

[0089] Specifically, in combination Figure 5 and Figure 7 As shown, there are multiple light-emitting elements 6, which are located on opposite sides of the button rubber 5 along the width direction of the circuit board 3, and the multiple light-emitting elements 6 emit light in a direction away from the button rubber 5.

[0090] In other words, the use of multiple light-emitting elements 6 avoids the risk of missing illumination due to the failure of a single light-emitting element 6, thus improving the reliability of the illumination effect. Along the width of the circuit board 3, the multiple light-emitting elements 6 are positioned on opposite sides of the key rubber 5 and emit light in a direction away from the key rubber 5. This allows light to easily pass through the light-transmitting areas on both sides of the key, thus revealing the precise position of the key. Furthermore, the scattering effect of the key rubber 5 makes the light emission more uniform, thereby improving the user's visual comfort. For example, the emission angle of the multiple light-emitting elements 6 can be 120°.

[0091] For example, the handle shell 11 is a semi-transparent uniform light substrate formed by transparent plastic white diffusion powder. By shining side-emitting light at a 120° angle onto both sides of the handle shell 1, and then uniformly reflecting it onto the laser-emitting area, the area within 120° of the light source is a strong light area, while the area reflected onto the laser-emitting area is a weak light area. This can reduce the light flux through the light-transmitting area and prevent the strong light emitted by the light source from shining directly, thereby ensuring that the light passes through the light-transmitting component uniformly, achieving a uniform and soft visual effect of the light ring around the button, and reducing the stimulation of the light to the human eye.

[0092] Furthermore, combined Figure 5 and Figure 7 As shown, a light-transmitting area is formed at the button; the electric toothbrush 100 also includes a light-emitting element 6 and a button soft rubber 5. The light-emitting element 6 is disposed on the circuit board 3, and the button soft rubber 5 covers the light-emitting element 6 and scatters the light emitted by the light-emitting element 6 to the light-transmitting area.

[0093] It is understandable that the light-emitting element 6 is connected to the circuit board 3 via electrical signals. The motor 8 can provide power to the light-emitting element 6 through the circuit board 3. The button soft rubber 5 is covered on the light-emitting element 6. When the light-emitting element 6 emits light outward, the button soft rubber 5 can scatter the light emitted by the light-emitting element 6 to the outer light-transmitting area, making the button position easier for the user to observe, thereby improving the user experience in poor lighting environments.

[0094] Specifically, in combination Figure 2 and Figure 8 As shown, the electric toothbrush 100 also includes a light processing element 62 disposed within the handle housing 1. Light emitted from the light-emitting element 6 is scattered by the light processing element 62 and then passes through the light-transmitting area. The light processing element 62 is at least one of optical fiber and microlens array. Since the light processing element 62 is located between the light-emitting element 6 and the light-transmitting area, it facilitates the light processing element 62 in guiding the direction and range of the light emitted from the light-emitting element 6, thereby improving the illumination prompting effect.

[0095] For example, if the silicone button is a semi-transparent substrate, and the light-emitting element 6 shines directly on the surface of the silicone button, it will illuminate the entire button surface and form a strong light area. After the light is scattered by the light processing element 62, it is transmitted to the laser of the handle shell 1 to present the light-emitting area. This can reduce the light flux of the light-transmitting area and prevent the strong light emitted by the light source from shining directly on it, thereby ensuring that the light passes through the button evenly and achieving a uniform and soft visual effect of the light ring around the button, reducing the stimulation of the light to the human eye.

[0096] The optical fiber mainly consists of a core and a cladding. The core conducts light, while the cladding reflects light and prevents light leakage. It can achieve low-loss light transmission over long distances and is unaffected by electromagnetic interference. Moreover, the small diameter and flexibility of the optical fiber make it easy to bend and install, suitable for compact design and flexible wiring. The microlens array consists of multiple tiny lenses (each with a diameter typically in the micrometer range). The microlens array can efficiently focus incident light onto a specific area, improving light intensity and resolution. It can also achieve uniform light distribution, avoiding local over-brightness or under-brightness, thus providing a softer and more uniform lighting effect. When the two are used in combination, the optical fiber can be responsible for transmitting light signals from one place to another, while the microlens array is responsible for efficiently focusing these light signals onto specific target areas or components, thereby achieving efficient light transmission and focusing, reducing light loss, and improving the button position indication effect of the light-emitting element 6.

[0097] Therefore, due to the efficient light guiding properties of optical fibers, they can evenly guide the light from the light source. By arranging optical fibers below the fingerprint button, the light from the light source can be effectively and evenly distributed on the surface of the handle shell 1, thereby improving the overall brightness and solving the problem of uneven brightness. Furthermore, the microlens array technology can refract and diffuse the light from the light source multiple times by setting a microlens array inside or on the surface of the handle shell 1, thereby reducing the brightness of the light passing through the handle shell 1 and making the light distribution more uniform.

[0098] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0099] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0101] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric toothbrush (100), characterized in that, include: Handle housing (1), wherein the handle housing (1) is provided with buttons; A bracket (2) is disposed inside the handle housing (1). The bracket (2) includes a motor fixing part (21) for fixing the motor (8) and a battery fixing part (22) for fixing the battery (7). The bracket (2) is also provided with a first abutting part (23) and a second abutting part (24). The position of the first abutting part (23) corresponds to the position of the battery fixing part (22), and the position of the second abutting part (24) corresponds to the position of the motor fixing part (21). Both the first abutting part (23) and the second abutting part (24) abut against the handle housing (1). Circuit board (3), the circuit board (3) is disposed on the bracket (2), and the circuit board (3) is provided with a feedback area; the button can trigger the feedback area when force is applied to control the electric toothbrush (100); The hardness of the first abutment (23) is less than that of the second abutment (24); or the first abutment (23) is in elastic contact with the handle housing (1), and the second abutment is in rigid contact with the handle housing (1).

2. The electric toothbrush (100) according to claim 1, characterized in that, The support (2) includes: The bracket body (25) includes the motor fixing part (21) and the battery fixing part (22). The first vibration damping member (26) is disposed on the battery fixing part (22); The first damping member (26) is provided with the first abutting part (23), and the bracket body (25) is provided with the second abutting part (24). The hardness of the first damping member (26) is less than the hardness of the bracket body (25).

3. The electric toothbrush (100) according to claim 2, characterized in that, A first damping member (26) is provided on the side of the motor fixing part (21) away from the handle housing (1). The first damping member (26) extends from the inner side of the motor fixing part (21) away from the handle housing (1) to the side of the battery fixing part (22) close to the handle housing (1). The first damping member (26) of the motor fixing part (21) on the side away from the handle housing (1) is used to contact the motor (8); the first damping member (26) of the battery fixing part (22) on the side close to the handle housing (1) is used to contact the handle housing (1).

4. The electric toothbrush (100) according to claim 2 or 3, characterized in that, The main body (25) of the bracket is a rigid plastic part, and the first damping part (26) is a soft rubber part or a silicone part. The first damping part (26) and the main body (25) of the bracket are integrally injection molded.

5. The electric toothbrush (100) according to claim 2, characterized in that, The first damping members (26) are respectively disposed on opposite sides of the support body (25), and each side of the first damping member (26) is provided with at least two first abutment portions (23) arranged along the axial direction of the support (2); and / or At least two second abutment portions (24) are respectively provided on the opposite sides of the support body (25) and arranged along the axial direction of the support (2).

6. The electric toothbrush (100) according to any one of claims 1-5, characterized in that, The electric toothbrush (100) also includes: Pressure-sensitive module (4), the pressure-sensitive module (4) is located in the feedback area, and is electrically connected to the circuit board (3) and is arranged opposite to the button; Button soft rubber (5) is disposed between the pressure-sensitive module (4) and the button to transmit the touch action of the button to the pressure-sensitive module (4).

7. The electric toothbrush (100) according to claim 6, characterized in that, Also includes: The circuit board (3) and the keypad adhesive (5) are bonded and fixed together.

8. The electric toothbrush (100) according to claim 7, characterized in that, Also includes: A fixing bracket (61) is disposed on the circuit board (3) and surrounding the pressure-sensitive module (4). The fixing bracket (61) and the button soft glue (5) are bonded and fixed.

9. The electric toothbrush (100) according to claim 6, characterized in that, The button soft rubber (5) includes a fixing part (51) and a supporting part (52). The fixing part (51) is fixed relative to the circuit board (3) or the bracket (2). The supporting part (52) protrudes from the fixing part (51) and is close to the handle shell (1) relative to the fixing part (51). The contact area between the supporting part (52) and the handle shell (1) is smaller than the area of ​​the fixing part (51).

10. The electric toothbrush (100) according to claim 6, characterized in that, The button has a light-transmitting area; The electric toothbrush (100) also includes: Light-emitting element (6) is disposed on the circuit board (3). The light-emitting element (6) is offset relative to the light-transmitting area so that the light emitted by the light-emitting element (6) enters the light-transmitting area after being reflected by the handle housing (1).

11. The electric toothbrush (100) according to claim 10, characterized in that, There are multiple light-emitting elements (6), which are located on opposite sides of the key rubber (5) along the width direction of the circuit board (3) and emit light in a direction away from the key rubber (5).

12. The electric toothbrush (100) according to claim 6, characterized in that, A light-transmitting area is formed at the button; The electric toothbrush (100) also includes: Light-emitting element (6), the light-emitting element (6) is disposed on the circuit board (3); The button soft rubber (5) covers the light-emitting element (6) and scatters the light emitted by the light-emitting element (6) into the light-transmitting area.

13. The electric toothbrush (100) according to claim 6, characterized in that, A light-transmitting area is formed at the button; The electric toothbrush (100) also includes: Light-emitting element (6), the light-emitting element (6) is disposed on the circuit board (3); The light processing element (62) is disposed inside the handle housing (1). The light emitted by the light-emitting element (6) is scattered by the light processing element (62) and passes through the light-transmitting area. The light processing element (62) is at least one of optical fiber and microlens array.

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