Motor support, motor module and electric toothbrush

Abstract

The embodiment of the application discloses a motor support, a motor module and an electric toothbrush, wherein the motor support is arranged on the motor module, the motor support has a first surface facing the motor module, the motor support comprises a rigid main body which is a hard rubber piece, and a damping structure which is a soft rubber piece, the damping structure is integrally injection molded with the rigid main body, the damping structure comprises a connecting part and a plurality of damping protrusions arranged on the connecting part, the connecting part is connected with the rigid main body, the plurality of damping protrusions are arranged at intervals, and the damping protrusions protrude from the first surface. In this way, the assembly process can be reduced and the assembly difficulty can be reduced while ensuring good damping effect.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a motor bracket, a motor module, and an electric toothbrush. Background Technology

[0002] In related technology development, motor brackets are usually a single-piece structure made of a single material, serving only to support and fix the motor. The motor bracket itself has poor vibration damping performance, thus requiring the use of additional vibration damping pads, which increases the assembly process and difficulty. At the same time, with the increase of usage time, the vibration damping pads are prone to falling off the motor bracket due to vibration, resulting in a decrease in vibration damping effect. Summary of the Invention

[0003] The main purpose of this application is to propose a motor bracket, a motor module, and an electric toothbrush, which aims to solve the technical problems of multiple assembly processes and high assembly difficulty in traditional motors while ensuring good shock absorption.

[0004] To achieve the above objectives, this application proposes a motor bracket for mounting on a motor module, the motor bracket having a first surface facing the motor module, the motor bracket comprising:

[0005] A rigid body, wherein the rigid body is a hard plastic component; and,

[0006] The shock-absorbing structure is a soft rubber part, which is integrally injection molded with the rigid body. The shock-absorbing structure includes a joint and a plurality of shock-absorbing protrusions disposed on the joint. The joint is connected to the rigid body, and the plurality of shock-absorbing protrusions are spaced apart and protrude from the first surface.

[0007] Optionally, the first surface is provided with an adhesive groove, and the joint portion is embedded in the adhesive groove.

[0008] Optionally, the side of the joint opposite to the adhesive groove is flush with the first surface.

[0009] Optionally, the rigid body is cylindrical and has an injection hole at one end. The first surface is the inner wall surface of the rigid body. The adhesive receiving groove includes a first groove. The first groove extends along the axial direction of the rigid body. One end of the first groove communicates with the injection hole. The width of the first groove gradually increases in the direction away from the injection hole.

[0010] Optionally, the bottom of the adhesive container is further provided with a limiting groove, and a portion of the joint is embedded in the limiting groove.

[0011] Optionally, the rigid body has a first end face and a second end face that are opposite to each other, the first surface connects the first end face and the second end face, the first end face is provided with an injection hole, the injection hole communicates with the adhesive receiving groove; the limiting groove passes through the second end face.

[0012] Optionally, the rigid body is cylindrical, the first surface is the inner wall surface of the rigid body, the glue-receiving groove includes a first groove and a second groove, the first groove extends along the axial direction of the rigid body, one end of the first groove communicates with the glue injection hole, the other end of the first groove communicates with the second groove, and the second groove extends along the circumferential direction of the rigid body.

[0013] The limiting groove is disposed in the second groove, and the length of the limiting groove along the circumference of the rigid body is equal to the length of the second groove along the circumference of the rigid body.

[0014] Optionally, the rigid body is cylindrical, and the damping structure is disposed on the peripheral wall of the rigid body; the damping structure includes multiple damping sections, which are distributed at intervals along the circumference of the rigid body, and extend along the axial direction of the rigid body, with multiple damping protrusions provided in each damping section.

[0015] Optionally, the damping structure further includes a connecting section that extends circumferentially along the rigid body and connects multiple damping sections.

[0016] Optionally, the rigid body is provided with a plurality of glue injection holes, which are distributed at intervals along the circumference of the rigid body. Each glue injection hole corresponds to a damping section, one end of which is located inside the glue injection hole, and the other end of which is connected to the connecting section.

[0017] Optionally, the damping structure includes a plurality of connecting segments, which are distributed circumferentially along the rigid body, and each connecting segment connects to different plurality of damping segments.

[0018] Optionally, the plurality of damping sections are evenly distributed along the circumference of the rigid body, and each damping section is provided with a plurality of damping protrusions, and the plurality of damping protrusions located in the same damping section are evenly distributed along the axial direction of the rigid body.

[0019] This application also proposes a motor module, including:

[0020] A motor module, comprising a motor housing, a stator, and a rotor, wherein the motor housing has a receiving cavity, and the stator and the rotor are disposed within the receiving cavity; and,

[0021] A motor bracket is provided on the outside of the motor housing. The rigid body is fixed to the motor housing, and the shock-absorbing protrusion faces the outer surface of the motor housing.

[0022] Optionally, the shock-absorbing protrusion abuts against the outer surface of the motor housing; or,

[0023] The motor module also includes a shock-absorbing sleeve. The motor housing, the shock-absorbing sleeve, and the motor bracket are arranged in an inner and outer manner, and the shock-absorbing sleeve abuts against the motor housing and the shock-absorbing protrusion respectively.

[0024] This application also proposes an electric toothbrush, comprising:

[0025] The handle includes a housing having a mounting cavity; and,

[0026] A motor module is disposed within the mounting cavity, and the motor bracket is fixed to the outer casing.

[0027] The technical solution of this application integrates the rigid body and the damping structure through integral injection molding, resulting in a high degree of bonding. This not only effectively dampens vibrations but also ensures the damping structure will not detach from the rigid body after long-term use. Furthermore, the integral injection molding process is convenient, eliminating the assembly process. Direct injection molding ensures high precision, a simple and compact structure, and avoids vibrations caused by assembly errors, further reducing noise. Moreover, the overall structure has high assembly efficiency, further reducing costs. In addition, by forming damping protrusions on the damping structure, these protrusions extend from the surface of the rigid body and point towards the vibration source (e.g., a motor module), allowing them to contact the vibration source while preventing direct contact between the source and the rigid body. This avoids the vibration generated by the source being directly transmitted to the rigid body, preventing it from vibrating along with the body. Adjacent damping protrusions are spaced apart, providing space for deformation. When a damping protrusion is compressed by vibration from the source, it deforms towards the space, absorbing and mitigating most of the vibration. Simultaneously, this space can also serve as a sound-absorbing cavity, absorbing some noise. Therefore, forming multiple damping protrusions results in a better damping effect compared to a single planar damping method. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the motor bracket in an embodiment of this application;

[0030] Figure 2 for Figure 1 A cross-sectional view of the motor bracket;

[0031] Figure 3 for Figure 1 Exploded view of the motor support;

[0032] Figure 4 for Figure 1 Schematic diagram of the rigid main body;

[0033] Figure 5 for Figure 1 Another cross-sectional view of the motor bracket;

[0034] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0035] Figure 7 for Figure 1 A cross-sectional schematic diagram of the rigid main body;

[0036] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0037] Figure 9 for Figure 4 A plan view of the rigid body;

[0038] Figure 10 This is a schematic diagram of the motor module structure in an embodiment of this application;

[0039] Figure 11 for Figure 10 A cross-sectional view of the motor module;

[0040] Figure 12 for Figure 11 Enlarged view of point C in the middle;

[0041] Figure 13 This is a partially enlarged schematic diagram of the motor module in another embodiment of this application;

[0042] Figure 14 for Figure 10 Schematic diagram of the structure of the motor housing;

[0043] Figure 15 This is a schematic diagram of the structure of the electric toothbrush in the embodiments of this application;

[0044] Figure 16 for Figure 15 A partial cross-sectional diagram of a medium-sized electric toothbrush.

[0045] Explanation of icon numbers:

[0046] 100 motor module 117 Anti-spinning 22 Shaft Hole 10 Motor bracket 118 First large section 23 Second large section 11 rigid body 119 First small tube segment 24 Second small section 111 First surface 12 Vibration damping structure 31 stator 112 Glue tank 121 Joint 32 rotor 1121 First groove 1221 shock absorber section 40 shock absorber sleeve 1122 Second groove 1222 Connecting segment 50 motor shaft 113 Injection hole 122 Shock-absorbing bump 200 handle 114 Limiting groove 123 Limiting protrusion 201 shell 115 First end face 20 motor housing 300 brush head 116 Second end face 21 Containment cavity 400 Buffer structure Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that in the description of this application, if the terms "first" or "second" appear, they are only used for the convenience of describing different components or names, and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, if the word "and / or" appears throughout the text, it means that it includes three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B.

[0049] Please refer to the reference. Figures 1 to 3 This application provides a motor bracket 10, which is used to mount a motor module to fix the motor module to other structures and prevent the motor module from shaking arbitrarily. The motor bracket 10 has a first surface 111 facing the motor module. The motor bracket 10 includes a rigid body 11 and a shock-absorbing structure 12. The rigid body 11 is a hard plastic part; the shock-absorbing structure 12 is a soft plastic part. The shock-absorbing structure 12 and the rigid body 11 are integrally injection molded. The shock-absorbing structure 12 includes a connecting portion 121 and a plurality of shock-absorbing protrusions 122 disposed on the connecting portion 121. The connecting portion 121 is connected to the rigid body 11. The plurality of shock-absorbing protrusions 122 are spaced apart and protrude from the connecting portion 121 and the first surface 111 of the rigid body 11.

[0050] In this embodiment, the rigid body 11 and the damping structure 12 are integrally injection molded together, resulting in a high degree of integration. This not only effectively dampens vibrations but also ensures that the damping structure 12 will not detach from the rigid body 11 after long-term use. Furthermore, the integral injection molding method is convenient, eliminating the assembly process. Direct injection molding results in high precision, a simple and compact structure, and avoids vibrations caused by assembly errors, further reducing noise. Moreover, the overall structure has high assembly efficiency, further reducing costs. Furthermore, by forming damping protrusions 122 on the damping structure 12, these protrusions extend from the surface of the rigid body 11 and point towards the vibration source (e.g., the motor housing 20), allowing them to contact the vibration source. This prevents direct contact between the vibration source and the rigid body 11, thus avoiding direct transmission of vibrations generated by the vibration source to the rigid body 11 and causing it to vibrate. Furthermore, the adjacent damping protrusions 122 are spaced apart, which provides space for the deformation of the damping protrusions 122. When the damping protrusions 122 are subjected to vibration and compression from a vibration source (such as the motor housing 20), the damping protrusions 122 deform towards the space to absorb and mitigate most of the vibration; at the same time, the space can also be used as a sound-absorbing cavity to absorb some noise. Therefore, forming multiple damping protrusions 122 results in better damping effect compared to a single planar damping method.

[0051] Both the rigid body 11 and the shock-absorbing structure 12 are made of plastic. The rigid body 11 has greater rigidity and strength than the shock-absorbing structure 12. As the main component, the rigid body 11 plays a supporting and fixing role. The shock-absorbing structure 12 has lower rigidity, is more flexible, has better elasticity, and plays a better shock-absorbing role.

[0052] Optionally, the rigid body 11 can be made of materials such as ABS (acrylonitrile-butadiene-styrene), PC (polycarbonate), and PA (polyamide). The damping structure 12 can be made of TPU (thermoplastic polyurethane) or silicone. In some specific embodiments, considering the molding temperature and sequence, the rigid body 11 is injection molded first, and then the damping structure 12 is integrally injection molded on the rigid body 11. Therefore, the damping structure 12 can be made of TPU with a lower melting point to avoid the rigid body 11 melting due to excessively high melting point temperature of the damping structure 12.

[0053] Please refer to the reference. Figure 3 and Figure 4To further improve the adhesion of the damping structure 12 to the rigid body 11 and reduce the risk of detachment, in some embodiments, the rigid body 11 has a first surface 111 with an adhesive groove 112. A connecting portion 121 is disposed within the adhesive groove 112, and a damping protrusion 122 protrudes from the first surface 111. Therefore, the connecting portion 121 is embedded in the adhesive groove 112, filling it completely, forming a mutually interlocking structure. This increases the contact area (connection area) between the connecting portion 121 and the rigid body 11, resulting in a better connection and more stable adhesion of the connecting portion 121 to the rigid body 11.

[0054] Optionally, the side of the joint 121 facing away from the adhesive groove 112 is flush with the first surface 111. Since the joint 121 does not protrude beyond the first surface 111, this reduces the risk of the joint 121 detaching from the rigid body 11 due to collisions with other structures. The side of the joint 121 facing away from the adhesive groove 112 refers to the side of the joint 121 facing the groove opening.

[0055] The shape of the adhesive reservoir 112 matches the shape of the damping structure 12. It is designed according to the shape of the damping structure 12 to be formed. Therefore, when the damping structure 12 is designed as a long strip, the adhesive reservoir 112 is also designed as a long strip; when the damping structure 12 is designed as an annular shape, the adhesive reservoir 112 is also designed as a long strip. A specific shape of the adhesive reservoir 112 (including the first groove 1121 and the second groove 1122) will be described in detail in later embodiments.

[0056] In some embodiments, the rigid body 11 is cylindrical and has an injection hole 113 at one end. The first surface 111 is the inner wall surface of the rigid body 11. The adhesive receiving groove 112 includes a first groove 1121, which extends axially along the rigid body 11. One end of the first groove 1121 communicates with the injection hole 113. Therefore, the shock-absorbing structure 12 filled into the first groove 1121 is an elongated strip extending axially along the rigid body 11. When adhesive is injected from the injection hole 113, the adhesive flows along the length of the first groove 1121 without turning, resulting in good flow performance. Optionally, the width D1 of the first groove 1121 gradually increases in the direction away from the injection hole 113, thus guiding the adhesive along the flow direction and facilitating its flow to the far end of the injection hole 113, allowing the adhesive to fill the first groove 1121 more quickly. The width of the first groove 1121 refers to its width along the circumference of the rigid body 11.

[0057] In some embodiments, the adhesive receiving groove 112 further includes a second groove 1122. One end of the first groove 1121 communicates with the adhesive injection hole 113, and the other end of the first groove 1121 communicates with the second groove 1122. The second groove 1122 extends circumferentially along the rigid body 11, so the second groove 1122 is located at the end away from the adhesive injection hole 113. Each second groove 1122 is connected to multiple first grooves 1121. In the shock-absorbing structure 12 formed by the first grooves 1121 and the second grooves 1122, multiple shock-absorbing segments 1221 are simultaneously connected to a connecting segment 1222. The connecting segment 1222 connects the multiple shock-absorbing segments 1221 to form an integral structure. This not only creates mutual restraining limiting forces between the multiple shock-absorbing segments 1221 and between the shock-absorbing segments 1221 and the connecting segment 1222, reducing the risk of the shock-absorbing structure 12 falling off the rigid body 11, but also allows the adhesive to flow from the multiple first grooves 1121 and converge into the second groove 1122. The adhesive is buffered in the second groove 1122 and will not accumulate at the bottom of the first groove 1121, causing excessive wall thickness. Furthermore, the second groove 1122 serves as a confluence groove for the adhesive material flowing down from the multiple first grooves 1121. The adhesive material flowing down from the first grooves 1121 naturally flows into the second groove 1122 and gradually splits to both sides in the circumferential direction. Basically, there is no need for excessively large and abrupt changes in direction, which is also conducive to the smooth flow of the adhesive material.

[0058] Optionally, the width D2 of the second groove 1122 is consistent at all points, so the width of the resulting connecting segment 1222 is also consistent at all points. In this embodiment, the width of the second groove 1122 refers to the width along the axial direction of the rigid body 11.

[0059] Please refer to the reference. Figures 5 to 8 Furthermore, the bottom of the adhesive-containing groove 112 is also provided with a limiting groove 114, and a portion of the connecting part 121 is embedded in the limiting groove 114. In this embodiment, the adhesive-containing groove 112 has a groove opening on the first surface 111, and the bottom of the adhesive-containing groove 112 refers to the side facing the groove opening. When the limiting groove 114 is provided, the adhesive-containing groove 112 and the limiting groove 114 are superimposed in the groove opening direction, resulting in a larger depth; when only the adhesive-containing groove 112 is provided, the adhesive-containing groove 112 has a smaller depth. The connecting part 121 fills both the adhesive-containing groove 112 and the limiting groove 114, forming an interlocking structure. The portion of the connecting part 121 within the limiting groove 114 serves as a limiting protrusion 123, which is equivalent to a rivet, anchoring the shock-absorbing structure 12 and the rigid body 11, thereby enhancing the stability of their fit.

[0060] The number of limiting grooves 114 can be set to one or more, and the shape of the limiting grooves 114 can be a small round groove, a small square hole, a long strip groove, an arc groove, etc. The limiting grooves 114 can be distributed at various positions in the glue-containing groove 112, such as positions near the glue injection hole 113 and positions away from the glue injection hole 113.

[0061] In some embodiments, the rigid body 11 has a first end face 115 and a second end face 116 disposed opposite to each other. The first surface 111 connects the first end face 115 and the second end face 116. The first end face 115 is provided with an injection hole 113, which communicates with a glue-receiving groove 112. A limiting groove 114 penetrates the second end face 116. When the damping structure 12 is integrally injection molded on the rigid body 11, the glue material forming the damping structure 12 is injected from the injection hole 113. The glue material flows along the first surface 111. Alternatively, when a glue-receiving groove 112 is provided on the first surface 111, the glue material flows along the glue-receiving groove 112 on the first surface 111. After the glue material cools, the damping structure 12 is finally formed.

[0062] In this embodiment, the glue-receiving groove 112 extends from the first end face 115 to the second end face 116, and the limiting groove 114 penetrates through the second end face 116. Therefore, the limiting groove 114 is located away from the glue-injection hole 113, and the limiting groove 114 forms a notch. Thus, the limiting groove 114 can also be used as a sealing groove, serving as the parting surface between the fixed mold and the moving mold. When the shock-absorbing structure 12 is embedded in the limiting groove 114, the shock-absorbing structure 12 forms a limiting protrusion 123, similar to a hook, which can hook onto the groove wall of the limiting groove 114, restricting the movement of the shock-absorbing structure 12 from the second end face 116 towards the first end face 115.

[0063] Optionally, the limiting groove 114 is disposed in the second groove 1122, and the length of the limiting groove 114 along the circumference of the rigid body 11 is equal to the length of the second groove 1122 along the circumference of the rigid body 11. The two ends of the limiting groove 114 along the circumference of the rigid body 11 are aligned with the two ends of the second groove 1122 along the circumference of the rigid body 11. With this arrangement, the adhesive flowing out from the side of the second groove 1122 away from the first groove 1121 can directly enter the sealing groove without changing direction, which is beneficial to the flow of adhesive, reduces the risk of burrs, and allows the side of the connecting section 1222 away from the shock-absorbing section 1221 to be used as a parting surface. Of course, the length of the limiting groove 114 can also be less than the length of the second groove 1122. In other embodiments, the limiting groove 114 is disposed in the first groove 1121. In this embodiment, the length of the rigid body 11 along the circumference refers to the length of the connecting section 1222 along the circumference. Figure 1 As shown, the chord length L represents the length of the connecting segment 1222 in the circumferential direction.

[0064] When the rigid body 11 is cylindrical, an annular groove can be provided on the inner peripheral wall of the rigid body 11. A part of the annular groove forms a second groove 1122, which facilitates processing.

[0065] In this embodiment, the rigid body 11 can be cylindrical, annular, disc-shaped, sheet-shaped, or plate-shaped, and can be specifically designed according to the shape of the motor housing 20, the position of the motor bracket 10 on the motor housing 20, or the required vibration damping area. In some embodiments, the rigid body 11 is cylindrical, and the vibration damping structure 12 is disposed on the peripheral wall of the rigid body 11. For example, depending on the relative position of the rigid body 11 and the motor housing 20, the vibration damping structure 12 can be disposed on the inner or outer peripheral wall of the rigid body 11.

[0066] Please refer to the reference again. Figures 1 to 3 In some embodiments, the damping structure 12 includes multiple damping segments 1221, which are spaced apart circumferentially along the rigid body 11 and extend axially along the rigid body 11. Each damping segment 1221 has multiple damping protrusions 122. If the entire inner circumferential wall of the rigid body 11 is covered by the damping structure 12, the flow range of the adhesive is too large, resulting in poor adhesive flow and making it difficult to form a uniformly thick joint 121. This can even lead to uneven adhesive distribution or lack of adhesive filling in areas far from the injection hole 113. In this embodiment, the damping structure 12 is divided into multiple spaced damping segments 1221, so that the damping structure 12 does not completely cover the circumferential wall of the rigid body 11. The flow range of the adhesive is relatively small, resulting in better flow performance. Meanwhile, multiple damping sections 1221 are distributed at intervals along the circumference of the rigid body 11, so they can provide good damping effect on the motor housing 20 at different positions in the circumference, effectively preventing the vibration of the motor housing 20 from being transmitted outward.

[0067] Furthermore, the damping structure 12 also includes a connecting section 1222, which extends circumferentially along the rigid body 11 and connects multiple damping sections 1221, thereby enabling multiple damping sections 1221 to be connected to form a whole, which is beneficial for fixing the damping sections 1221.

[0068] Optionally, the damping structure 12 includes multiple connecting segments 1222, which are distributed circumferentially along the rigid body 11. Each connecting segment 1222 connects to different damping segments 1221. Therefore, two adjacent connecting segments 1222 are essentially cut off, which can shorten the flow path of the rubber material and facilitate the formation of a regular damping structure 12.

[0069] In some specific embodiments, the damping structure 12 includes two connecting sections 1222 and four damping sections 1221, wherein two damping sections 1221 are connected to the same connecting section 1222, and the other two damping sections 1221 are connected to another connecting section 1222.

[0070] Please refer to the reference. Figure 9 In some embodiments, the rigid body 11 is provided with multiple injection holes 113, which are distributed circumferentially along the rigid body 11. Each injection hole 113 corresponds to a damping section 1221, with one end of the damping section 1221 located inside the injection hole 113 and the other end connected to the connecting section 1222. Therefore, the damping sections 1221 do not share injection holes 113, and the flow path of the adhesive entering from a single injection hole 113 is relatively short, resulting in a short overall molding time. This helps maintain a relatively uniform temperature of the adhesive throughout, thus forming a well-formed damping structure 12. Furthermore, since the injection hole 113 is located at one end of the length of the damping section 1221, the adhesive entering from the injection hole 113 flows directly along the length of the damping section 1221 without changing its flow direction.

[0071] In some embodiments, multiple damping sections 1221 are evenly distributed circumferentially along the rigid body 11, and each damping section 1221 is provided with multiple damping protrusions 122. The multiple damping protrusions 122 located in the same damping section 1221 are evenly distributed axially along the rigid body 11. Therefore, the damping protrusions 122 are evenly distributed circumferentially and axially along the rigid body 11. The damping protrusions 122 can exert a stable and uniform force on the motor housing 20, so that the motor housing 20 is subjected to uniform force, keeping the motor housing 20 in a predetermined position and reducing the risk of the motor housing 20 deviating from the predetermined position.

[0072] Taking the four damping sections 1221 as an example, the included angle between any two adjacent damping sections 1221 is 90°, so the four damping sections 1221 are evenly distributed around the rigid body 11.

[0073] The shock-absorbing protrusion 122 can be hemispherical, cylindrical, conical, etc., and its shape is not limited.

[0074] Please refer to the reference. Figures 10 to 14 This application embodiment also provides a motor module 100, which includes a motor module and a motor bracket 10. The motor module includes a motor housing 20, a stator 31 and a rotor 32. The motor housing 20 has a receiving cavity 21. The stator 31 and the rotor 32 are disposed in the receiving cavity 21. The motor bracket 10 is disposed on the outside of the motor housing 20. A rigid body 11 is fixed to the motor housing 20. The shock-absorbing protrusion 122 faces the outer surface of the motor housing 20.

[0075] When the coils of stator 31 are energized, they generate a magnetic field that drives rotor 32 to rotate. Rotation of rotor 32 easily generates vibration, which in turn causes vibration in other surrounding structures. Since rotor 32 is housed inside motor housing 20, motor housing 20 effectively becomes a vibration source. Therefore, by providing a motor support 10 outside motor housing 20, with damping protrusions 122 facing the outer surface of motor housing 20, the motor housing 20 is separated from the rigid body 11, reducing the transmission of vibration from motor housing 20 to motor support 10.

[0076] like Figure 12 As shown, in some embodiments, the shock-absorbing protrusion 122 directly abuts against the outer surface of the motor housing 20 to limit the contact between the outer surface of the motor housing 20 and the rigid body 11.

[0077] Or, such as Figure 13 As shown, in some embodiments, the motor module 100 further includes a shock-absorbing sleeve 40. The motor housing 20, the shock-absorbing sleeve 40, and the motor bracket 10 are sequentially arranged in an inner and outer configuration. The shock-absorbing sleeve 40 abuts against the motor housing 20 and the shock-absorbing protrusion 122, respectively. Specifically, the vibration of the motor housing 20 is first transmitted to the shock-absorbing sleeve 40. After being damped by the shock-absorbing sleeve 40, the remaining vibration and noise are transmitted to the shock-absorbing structure 12 and are buffered and absorbed by the shock-absorbing structure 12. The simultaneous arrangement of the shock-absorbing sleeve 40 and the shock-absorbing structure 12 provides a dual damping effect, effectively preventing the transmission of vibration.

[0078] The shock-absorbing sleeve 40 can be made of materials with good shock absorption effects, such as silicone, rubber, or TPU.

[0079] Please refer to the reference. Figure 15 and Figure 16 This application also provides an electric toothbrush, which includes a handle 200 and a brush head 300 connected to one end of the handle 200. The handle 200 is for users to hold and is usually long and narrow, and its overall shape can be cylindrical or flat.

[0080] The handle 200 includes a housing 201, which has a mounting cavity. The motor module 100 is disposed within the mounting cavity, and the motor bracket 10 is fixed to the housing 201. For the specific structure of the motor module 100, please refer to the above embodiment; it will not be repeated here.

[0081] The rigid body 11 of the motor bracket 10 serves to fix the motor housing 20 to the outer shell 201, preventing the motor housing 20 from moving relative to the outer shell 201, thereby keeping the motor shaft 50 passing through the motor housing 20 at a predetermined position on the brush head 300.

[0082] Optionally, the rigid body 11 is fixed to the motor housing 20 by means of screws or clips.

[0083] Furthermore, the rigid body 11 is provided with anti-rotation ribs 117, and the inner surface of the outer shell 201 or the buffer structure 400 ( Figure 16 An anti-rotation groove (not shown) is provided, and an anti-rotation rib 117 is inserted into the anti-rotation groove to prevent the rigid body 11 from rotating relative to the outer shell 201, thus fixing the motor bracket 10 relative to the outer shell 201. In addition, one end of the motor module 100 abuts against the inner surface of the outer shell 201, and the other end of the motor module 100 abuts against the outer shell 201 through the motor bracket 10. The other end of the motor module 100 is also restricted from rotation by the cooperation of the anti-rotation rib and the anti-rotation groove, thereby fixing the motor bracket 10 to the outer shell 201.

[0084] Furthermore, the motor module 100 also includes a motor shaft 50, which is fixed to the rotor 32 and can rotate together with the rotor 32. The motor housing 20 is provided with a shaft hole 22. The motor shaft 50 passes through the shaft hole 22 and is connected to the brush head 300, thereby driving the brush head 300 to rotate or swing.

[0085] Please refer to the reference again. Figure 3 , Figure 14 and 16 In some embodiments, the rigid body 11 and the motor housing 20 are respectively stepped cylindrical. The rigid body 11 includes a first large cylindrical section 118 and a first small cylindrical section 119, with the length of the first large cylindrical section 118 being greater than the length of the first small cylindrical section 119. The motor housing 20 includes a second large cylindrical section 23 and a second small cylindrical section 24. The first large cylindrical section 118 is fitted outside the second large cylindrical section 23, and the first small cylindrical section 119 is fitted outside the second small cylindrical section 24. The first small cylindrical section 119 abuts against the outer shell 201 through a buffer structure 400, and a shock-absorbing structure 12 is disposed on the first large cylindrical section 118. In this embodiment, one end of the motor bracket 10 abuts against the outer shell 201 through the buffer structure 400. Therefore, even if the vibration of the motor housing 20 is transmitted from the second small cylindrical section 24, it can be absorbed by the buffer structure 400 there, preventing the vibration from being transmitted to the outer shell 201. The shock-absorbing structure 12 is disposed in other areas not covered by the buffer structure 400, which can absorb the vibration transmitted from the second large cylindrical section 23. Furthermore, by placing the damping structure 12 in a region with a long length and a large diameter, and by surrounding the second large cylindrical section 23, the transmission of vibrations in this region can be significantly reduced.

[0086] In the above, the first end face 115 connects the first large cylindrical section 118 and the first small cylindrical section 119.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A motor bracket for mounting on a motor module, the motor bracket having a first surface facing the motor module, characterized in that, The motor bracket includes: A rigid body, wherein the rigid body is made of hard plastic; and, The shock-absorbing structure is a soft rubber part, which is integrally injection molded with the rigid body. The shock-absorbing structure includes a joint and a plurality of shock-absorbing protrusions disposed on the joint. The joint is connected to the rigid body, and the plurality of shock-absorbing protrusions are spaced apart and protrude from the first surface. The first surface is provided with an adhesive groove, and the joint portion is embedded in the adhesive groove; The rigid body is cylindrical and has an injection hole at one end. The first surface is the inner wall surface of the rigid body. The adhesive receiving groove includes a first groove. The first groove extends along the axial direction of the rigid body. One end of the first groove communicates with the injection hole. The width of the first groove gradually increases in the direction away from the injection hole.

2. The motor bracket as described in claim 1, characterized in that, The side of the joint that is away from the adhesive groove is flush with the first surface.

3. The motor bracket as described in claim 1, characterized in that, The bottom of the adhesive container is also provided with a limiting groove, and a part of the joint is embedded in the limiting groove.

4. The motor bracket as described in claim 3, characterized in that, The rigid body has a first end face and a second end face that are opposite to each other. The first end face connects the first end face and the second end face. The first end face is provided with an injection hole, which communicates with the glue-receiving groove. The limiting groove passes through the second end face.

5. The motor bracket as described in claim 4, characterized in that, The rigid body is cylindrical, the first surface is the inner wall surface of the rigid body, the glue-containing groove includes a first groove and a second groove, the first groove extends along the axial direction of the rigid body, one end of the first groove communicates with the glue injection hole, the other end of the first groove communicates with the second groove, and the second groove extends along the circumferential direction of the rigid body. The limiting groove is disposed in the second groove, and the length of the limiting groove along the circumference of the rigid body is equal to the length of the second groove along the circumference of the rigid body.

6. The motor bracket as described in any one of claims 1 to 5, characterized in that, The rigid body is cylindrical, and the damping structure is disposed on the peripheral wall of the rigid body; the damping structure includes multiple damping sections, which are distributed at intervals along the circumference of the rigid body, and the damping sections extend along the axial direction of the rigid body, and each damping section is provided with multiple damping protrusions.

7. The motor bracket as described in claim 6, characterized in that, The damping structure also includes a connecting section that extends circumferentially along the rigid body and connects multiple damping sections.

8. The motor bracket as described in claim 7, characterized in that, The rigid body is provided with a plurality of glue injection holes, which are distributed at intervals along the circumference of the rigid body. Each glue injection hole corresponds to a damping section. One end of the damping section is located in the glue injection hole, and the other end of the damping section is connected to the connecting section.

9. The motor bracket as described in claim 7, characterized in that, The damping structure includes multiple connecting segments, which are distributed circumferentially along the rigid body, and each connecting segment connects to different multiple damping segments.

10. The motor bracket as described in claim 6, characterized in that, Multiple damping sections are evenly distributed along the circumference of the rigid body, and each damping section is provided with multiple damping protrusions. The multiple damping protrusions located in the same damping section are evenly distributed along the axial direction of the rigid body.

11. A motor module, characterized in that, include: A motor module, comprising a motor housing, a stator, and a rotor, wherein the motor housing has a receiving cavity, and the stator and the rotor are disposed within the receiving cavity; as well as, The motor bracket as described in any one of claims 1 to 10, wherein the motor bracket is disposed on the outside of the motor housing, the rigid body is fixed to the motor housing, and the shock-absorbing protrusion faces the outer surface of the motor housing.

12. The motor module as described in claim 11, characterized in that, The shock-absorbing protrusion abuts against the outer surface of the motor housing; or... The motor module also includes a shock-absorbing sleeve. The motor housing, the shock-absorbing sleeve, and the motor bracket are arranged in an inner and outer manner, and the shock-absorbing sleeve abuts against the motor housing and the shock-absorbing protrusion respectively.

13. An electric toothbrush, characterized in that, include: A handle, the handle including a housing having a mounting cavity; as well as, The motor module as described in claim 11 or 12 is disposed within the mounting cavity, and the motor bracket is fixed to the housing.

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