Noise-reduction shaft contact seat

Abstract

The invention provides a noise reduction shaft contact seat, and belongs to the technical field of window lifting motors. The bearing is arranged in the cylinder cavity of the open end of the contact seat body to be connected with the motor shaft, and the rubber ring is arranged on the end face and the side wall of the end, away from the open end, of the contact seat body and abuts against the cavity wall of the inner cavity of the machine shell, so that the rubber ring can serve as a structure of the shaft contact seat to make contact with the machine shell. The rubber ring is arranged on the shaft contact seat, so that force acting on the shaft contact seat during rotation of the motor shaft can be weakened through soft contact between the rubber ring and the casing, noise reduction and shock absorption are realized by taking the rubber ring as a collision buffer structure between the shaft contact seat and the casing, and in addition, the rubber ring and the contact seat body are of an integrated injection molding structure, so that the process is simple, the processing is convenient, and the cost is low. The connection strength of the rubber ring and the contact seat body can be enhanced, the problems of poor overall precision caused by later assembly and abrasion caused by relative movement after use can be reduced, the service life is longer, and the noise reduction and shock absorption effects are better.

Description

Technical Field

[0001] The invention relates to the technical field of window-lifting motors, and in particular to a noise-reducing shaft contact seat. Background Art

[0002] With the development of automobile electrification and intelligence, there are more and more electric structures in automobiles, including window regulator motors. The windows are raised and lowered by the forward and reverse rotation of the window regulator motors, thereby meeting the needs of electric window lifting and lowering.

[0003] At present, the existing window-lifting motors on the market, such as a kind of automobile window-lifting motor bearing sleeve end gap adjustment buffer assembly disclosed in patent CN203027060U, include a buffer block, a shaft end top block, a bearing sleeve, a steel ball and a bearing, a buffer block connected to one end of the bearing sleeve, a shaft end top block is embedded between the bearing sleeve and the buffer block, a steel ball is embedded at the other end of the bearing sleeve, and the steel ball is adapted to be installed with a bearing. During installation, one end of the motor shaft is inserted into the bearing and pressed against the steel ball, and the shaft end top block and the buffer block are squeezed by the steel ball. At this time, the entire structure is installed in the casing, and the buffer block is pressed against the casing to achieve buffering of the motor shaft end. Although the above structure can meet the buffering requirements of the motor shaft, it has many structural components, and needs to be installed one by one when wearing, and the disassembly and assembly process is relatively cumbersome. In addition, since multiple structural components need to be assembled, due to the influence of the processing accuracy of different structural parts and the assembly clearance and other problems, the overall accuracy of the assembled buffer assembly will be deteriorated, affecting the use effect. In addition, the buffer assembly composed of multiple structural components is prone to relative movement and has many movement points during subsequent long-term use, which may lead to problems such as wear and tear, causing the gap between the structural parts to gradually increase, which will also affect the use effect. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a noise-reducing shaft contact seat, so that the shaft contact seat is arranged in the inner cavity of the casing, and the end and side of the contact seat body of the shaft contact seat are provided with rubber rings, and the rubber rings are secondary injection molded on the contact seat body, so that the contact seat body abuts against the inner wall of the inner cavity of the casing through the rubber ring, and a circle of soft shock-absorbing structure is wrapped around the periphery of the contact seat body by the rubber ring, so as to effectively buffer the collision between the shaft contact seat and the casing, thereby achieving noise reduction and shock absorption, and the rubber ring is directly injection molded on the contact seat body, so as to avoid the cumbersome later assembly process and the problem of relative movement after use, thereby ensuring the structural accuracy and stability, and ensuring the use effect.

[0005] The specific technical solutions are as follows: A noise-reducing shaft contact seat is installed in the inner cavity of a casing and has the following characteristics: a contact seat body, a bearing and a rubber ring. One end of the contact seat body is an open end, and the open end of the contact seat body is provided with a cylindrical cavity, in which a bearing is installed. The end of the motor shaft is inserted into the bearing from the open end of the contact seat body. The end of the other end of the contact seat body and the outer side wall are provided with a rubber ring. The contact seat body and the rubber ring are an integrated injection molding structure, and the rubber ring protrudes from the outer surface of the contact seat body and contacts the inner wall of the inner cavity of the casing.

[0006] The above-mentioned noise-reducing shaft contact seat, wherein the rubber ring includes a bottom ring and a plurality of side strips, the bottom ring and the plurality of side strips are an integrated structure, the bottom ring is an annular structure and is sleeved on the end surface of the contact seat body at one end away from the outlet end, the plurality of side strips are arranged along the axial direction of the motor shaft and are spaced apart from each other on the side wall of the contact seat body, and at the same time, one end of each side strip is connected to the bottom ring.

[0007] The above-mentioned noise-reducing shaft contact seat, wherein a circle of annular end groove is opened on the outer edge of the end surface of the contact seat body away from the outlet end, the bottom ring is embedded in the end groove, and one side of the bottom ring protrudes out of the end groove along the axial direction of the motor shaft, and a plurality of side grooves are opened on the side wall of the contact seat body and along the axial direction of the motor shaft, each side groove is connected to the end groove, and a side strip is embedded in each side groove, and one side of the side strip protrudes out of the corresponding side groove.

[0008] In the above-mentioned noise-reducing shaft contact seat, at least one glue injection hole is provided on the end surface of the contact seat body and located at one end of the open end thereof, and the glue injection hole is communicated with the side groove.

[0009] In the above-mentioned noise-reducing shaft contact seat, the side strips and the groove walls of the corresponding side grooves are arranged separately.

[0010] The above-mentioned noise-reducing shaft contact seat, wherein a plurality of telescopic holes are provided on the bottom ring of the rubber ring and on the end face of the end away from the contact seat body, each telescopic hole corresponds to a side strip, and the telescopic holes are arranged along the axial direction of the motor shaft. At the same time, a push rod is inserted into each telescopic hole, and the end of the push rod abuts against the corresponding side strip on one end connected to the bottom ring.

[0011] The above-mentioned noise-reducing shaft contact seat has a deformable rod embedded in each side strip along its length direction, and a avoidance hole corresponding to each deformable rod is opened on the bottom ring, and one end of each deformable rod extends into the corresponding avoidance hole.

[0012] The above-mentioned noise-reducing shaft contact seat, wherein the deformable rod includes a straight portion and a curved portion, both ends of the curved portion are connected with a straight portion, and the two straight portions are coaxially arranged, the curved portion protrudes outwardly of the side groove, and one end of the straight portion extends into the corresponding avoidance hole.

[0013] In the above-mentioned noise-reducing shaft contact seat, the length of the straight portion of the deformable rod extending into the avoidance hole is greater than the length of the other straight portion.

[0014] In the above-mentioned noise-reducing shaft contact seat, a deformation notch is provided at the connection between the bottom ring of the rubber ring and the side strip, and the deformation notch is located on both sides of the side strip.

[0015] The positive effects of the above technical solution are: The above-mentioned noise-reducing shaft contact seat is provided with rubber rings on the ends and sides of the contact seat body of the shaft contact seat, and the rubber rings abut against the cavity wall of the inner cavity of the casing, so that the rubber rings can serve as the noise reduction and shock absorption structure of the shaft contact seat, effectively buffering the collision between the shaft contact seat and the casing, and the rubber rings are directly injection molded on the contact seat body by an integrated injection molding method, without the need for cumbersome assembly processes, and are more convenient for disassembly and assembly. At the same time, the rubber rings can be more stably connected to the contact seat body, thereby effectively avoiding the problem of relative movement between structural parts after long-term use in the later stage, ensuring the accuracy and stability of the product itself, and further improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an embodiment of a noise-reducing shaft contact seat of the present invention; Figure 2 An exploded view of an embodiment of a noise-reducing shaft contact seat of the present invention; Figure 3 It is an assembly diagram of a noise-reducing shaft contact seat, a motor shaft and a housing of the present invention; Figure 4 It is a structural diagram of a contact seat body of a noise-reducing shaft contact seat of the present invention; Figure 5 A structural diagram of a rubber ring of a noise-reducing shaft contact seat of the present invention; Figure 6 A structural diagram of another rubber ring of a noise-reducing shaft contact seat of the present invention; Figure 7 A structural diagram of another rubber ring of a noise-reducing shaft contact seat of the present invention; Figure 8 for Figure 7 A cross-sectional view of a side strip of a rubber ring of a noise-reducing shaft contact seat.

[0017] In the accompanying drawings: 1. housing; 2. contact seat body; 21. end groove; 22. side groove; 23. glue injection hole; 24. cylinder cavity; 3. bearing; 4. rubber ring; 41. bottom ring; 42. side strip; 411. telescopic hole; 412. avoidance hole; 413. deformation notch; 5. motor shaft; 6. push rod; 7. deformation rod; 71. straight part; 72. curved part. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 8 The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0019] Figure 1 It is a structural diagram of an embodiment of a noise-reducing shaft contact seat of the present invention; Figure 2 An exploded view of an embodiment of a noise-reducing shaft contact seat of the present invention; Figure 3 This is an assembly diagram of a noise-reducing shaft contact seat, a motor shaft and a housing of the present invention. Figure 1 , Figure 2 as well as Figure 3 As shown, the noise-reducing shaft contact seat provided in this embodiment is installed in the inner cavity of the casing 1. At this time, the noise-reducing shaft contact seat includes: a contact seat body 2, a bearing 3 and a rubber ring 4. The bearing 3 is installed on the contact seat body 2, and the contact seat body 2 is provided with a rubber ring 4. The rubber ring 4 abuts against the inner wall of the inner cavity of the casing 1, and the end of the motor shaft 5 is inserted into the bearing 3.

[0020] Figure 4 It is a structural diagram of a contact seat body of a noise-reducing shaft contact seat of the present invention; Figure 5 This is a structural diagram of a rubber ring of a noise-reducing shaft contact seat of the present invention. Figures 1 to 5As shown, one end of the contact seat body 2 is an open end, which is convenient for the end of the motor shaft 5 to be inserted. At the same time, a cylindrical cavity 24 is provided at the open end of the contact seat body 2, and the bearing 3 is installed in the cylindrical cavity 24, that is, the installation of the bearing 3 on the contact seat body 2 is realized, and at the same time, it also provides conditions for the subsequent end of the motor shaft 5 to be inserted from the open end of the contact seat body 2 into the bearing 3 in the cylindrical cavity 24. During installation, the end of the motor shaft 5 is inserted into the bearing 3 from the open end of the contact seat body 2. At the same time, a rubber ring 4 is provided on the end and outer side wall of the other end of the contact seat body 2. The rubber ring 4 forms a soft shock-absorbing structure on the end and outer side wall of the contact seat body 2, which provides conditions for the subsequent buffering of the collision between the contact seat and the housing 1. In addition, the contact seat body 2 and the rubber ring 4 are an integrated injection molding structure, that is, after the contact seat body 2 is injection molded, the rubber ring 4 is directly injection molded on the contact seat body 2 by secondary injection molding, thereby realizing a stable and reliable connection of the rubber ring 4 on the contact seat body 2, without the need for cumbersome assembly processes, and improving the convenience of disassembly and assembly. In addition, the integrity of the contact seat body 2 and the rubber ring 4 can be maintained, reducing the problem of assembly gaps affecting the overall accuracy caused by multi-component assembly, and can also effectively avoid the problem of relative movement between structural parts after long-term use, thereby preventing the problem of excessive structural wear and uneven distribution of wear positions caused by relative movement between structural parts, thereby ensuring the accuracy and stability of the product itself and improving the use effect. In addition, the rubber ring 4 is arranged to protrude from the outer surface of the contact seat body 2 and contact the inner wall of the inner cavity of the housing 1, so that the contact seat body 2 abuts against the housing 1 through the rubber ring 4, so that the rubber ring 4 serves as a noise reduction and shock absorption structure of the shaft contact seat, effectively buffering the collision between the shaft contact seat and the housing 1, and the structural design is more reasonable.

[0021] More specifically, the rubber ring 4 injection-molded on the contact seat body 2 includes a bottom ring 41 and a plurality of side strips 42. Preferably, the bottom ring 41 and the plurality of side strips 42 are an integrated structure, which can meet the requirements of integrated injection molding. In addition, the bottom ring 41 is an annular structure and is sleeved on the end face of the contact seat body 2 that is away from the outlet end, that is, the bottom ring 41 is provided on the end face of the contact seat body 2 that contacts the housing 1, and the end noise reduction and shock absorption are achieved through the bottom ring 41. At the same time, a plurality of side strips 42 are arranged along the axial direction of the motor shaft 5 and are spaced apart from each other on the side wall of the contact seat body 2, so that a plurality of side strips 42 are provided on the outer side face of the side contact housing 1 of the contact seat body 2, and the side noise reduction and shock absorption are achieved through the side strips 42. At the same time, one end of each side strip 42 is connected to the bottom ring 41, so that the side strips 42 and the bottom ring 41 form an integral structure, which meets the requirements of integrated injection molding and facilitates processing.

[0022] More specifically, a circle of annular end grooves 21 are provided on the outer edge of the end surface of the contact seat body 2 away from the outlet end. During injection molding, the bottom ring 41 of the rubber ring 4 is embedded in the end groove 21. At the same time, one side of the bottom ring 41 protrudes out of the end groove 21 along the axial direction of the motor shaft 5, so that the structure of the end of the shaft contact seat contacting the housing 1 is preferentially the bottom ring 41, meeting the requirements of noise reduction and vibration reduction. In addition, a plurality of side grooves 22 are provided on the side wall of the contact seat body 2 and along the axial direction of the motor shaft 5. At this time, each side groove 22 is connected to the end groove 21, so that during subsequent injection molding, the rubber in the side cavity can flow into the end groove 21, thereby realizing one-time injection molding of the bottom ring 41 and a plurality of side strips 42, which is convenient for processing. In addition, a side strip 42 is embedded in each side groove 22, and one side of the side strip 42 protrudes out of the corresponding side groove 22, so that the side of the shaft contact seat that contacts the housing 1 is preferably the side strip 42, which also meets the requirements of noise reduction and vibration reduction.

[0023] More specifically, at least one glue injection hole 23 is provided on the end face of the contact seat body 2 and located at one end of the open end thereof, and the glue injection hole 23 is connected with the side groove 22, so that when the rubber ring 4 is injection molded on the contact seat body 2, the rubber can be directly injected through the glue injection hole 23 at the end of the contact seat body 2, that is, the extension of the side groove 22 is directly achieved through the glue injection hole 23, so that the side groove 22 can serve as a channel for the glue injection hole 23 to connect to the bottom groove, thereby reducing the processing length of the glue injection hole 23, saving processing volume, and facilitating production and manufacturing.

[0024] This embodiment also provides another rubber ring structure. In this case, Figure 6 FIG. 1 is a structural diagram of another rubber ring of a noise-reducing shaft contact seat of the present invention. Figures 1 to 4 as well as Figure 6 As shown, the side strip 42 and the corresponding groove wall of the side groove 22 are arranged separately, that is, the side strip 42 can slide in the side groove 22, so that when the side strip 42 is subsequently compressed, the side strip 42 can be squeezed and deformed in the side groove 22, so that the side strip 42 can further expand outward from the side groove 22, thereby achieving further tightening with the casing 1, thereby improving the abutment stability between the side of the shaft contact seat and the casing 1, and further improving the noise reduction and vibration reduction requirements. Preferably, during injection molding, an anti-stick coating is provided on the groove wall of the side groove 22. The anti-stick coating includes but is not limited to coating materials available on the market that are sprayed on the mold surface during injection molding, such as a polytetrafluoroethylene coating. This can prevent the side strip 42 from being fixed in the side groove 22 when the rubber ring 4 is injection molded on the contact seat body 2, so that the side strip 42 can be deformed when squeezed and further protrude outside the side groove 22, thereby squeezing the cavity wall of the inner cavity of the casing 1, thereby improving the contact stability between the shaft contact seat and the casing 1 during shock absorption, and the fit is better, further enhancing the noise reduction and shock absorption effect.

[0025] More specifically, a plurality of telescopic holes 411 are provided on the bottom ring 41 of the rubber ring 4 and on the end surface of the end facing away from the contact seat body 2. At this time, each telescopic hole 411 corresponds to a side strip 42, so that each side strip 42 can be squeezed and deformed by the push of the top rod 6 in the telescopic hole 411. Furthermore, the telescopic holes 411 are arranged along the axial direction of the motor shaft 5. At the same time, a push rod 6 is inserted into each telescopic hole 411, and the push rod 6 can slide in the telescopic hole 411. At this time, the end of the push rod 6 is abutted against one end of the corresponding side strip 42 connected to the bottom ring 41, so that when the motor shaft 5 axially squeezes the shaft contact seat, the rubber ring 4 on the shaft contact seat is squeezed first, thereby achieving the first-time noise reduction and vibration reduction. At the same time, the push rod 6 is squeezed and compressed toward the telescopic hole 411, so that the push rod 6 can directly guide the squeezing force to the corresponding side strip 42, so that the corresponding side strip 42 is quickly squeezed and deformed and expands to the outside of the side groove to press the housing 1, so that the side wall of the shaft contact seat can also quickly and stably contact the housing 1, combined with the bottom ring 4 The end noise reduction and shock absorption effect achieved by 1 realizes soft contact between the end face and the side face of the shaft contact seat and the casing 1, and the contact is stable, thereby avoiding the generation of a large collision sound, playing the role of noise reduction and buffering. At the same time, it can further prevent the relative movement wear problem caused by insufficient mutual pressure after use, prolong the service life, and can eliminate the movement amplitude of the shaft contact seat during the noise reduction and shock absorption process, further ensuring the noise reduction effect. In addition, when assembling the shaft contact seat into the casing 1, an assembly gap can be appropriately reserved for easy disassembly and assembly, and the extrusion deformation of the side strip 42 during the shock absorption process can still meet the use requirements of the shaft contact seat stably abutting the casing 1, that is, the noise reduction and shock absorption effect can still be guaranteed under the condition of convenient disassembly and assembly, and the structural design is more reasonable.

[0026] In addition, this embodiment also provides a rubber ring with side strips different from the above two types. Figure 7 A structural diagram of another rubber ring of a noise-reducing shaft contact seat of the present invention; Figure 8 for Figure 7 A cross-sectional view of a side strip of a rubber ring of a noise-reducing shaft contact seat. Figures 1 to 4 as well as Figure 7 and Figure 8As shown, a deformation rod 7 is embedded in each side strip 42 of the rubber ring 4 along its length direction, realizing the integral injection molding of the deformation rod 7 and the rubber ring 4, that is, when the rubber ring 4 is injection molded on the contact seat body 2, the deformation rod 7 can be simultaneously injection molded on the rubber ring 4, further facilitating the processing. In addition, a avoidance hole 412 corresponding to each deformation rod 7 is opened on the bottom ring 41, and one end of each deformation rod 7 extends into the corresponding avoidance hole 412, so that when the bottom ring 41 is compressed later, the housing 1 can also push the deformation rod 7 synchronously, so that the deformation rod 7 transmits the force to the corresponding side strip 42, thereby forcing the side strip 42 to be squeezed and deformed and expand to the outside of the side strip 42, meeting the use requirements of the shaft contact seat stabilization method to abut the housing 1, and can also achieve the effect embodied by the above-mentioned structure with the top rod 6, meeting the requirements of noise reduction and vibration reduction.

[0027] More specifically, the deformable rod 7 in each side strip 42 includes a straight portion 71 and a curved portion 72 , and both ends of the curved portion 72 are connected to a straight portion 71 , so that the curved portion 72 is located between the two straight portions 71 . When the locking cam 72 is in the unlocking state, the two locking cams 71 are in the unlocking state, so that the two locking cams 71 are locked and the locking cams 71 are locked.

[0028] More specifically, the length of the straight portion 71 of the deformation rod 7 extending into the avoidance hole 412 is set to be greater than the length of the other straight portion 71, so that the bent portion 72 is located at the end away from the bottom ring 41, that is, the portion where the side strip 42 is deformed and protrudes outward can be located at the end away from the bottom ring 41, so that when the bottom ring 41 and the side strip 42 are jointly abutted on the casing 1, the distance between the abutting portions of the bottom ring 41 and the side strip 42 can be larger, thereby improving the abutment stability and enhancing the noise reduction and shock absorption effects.

[0029] More specifically, deformation notches 413 are also provided at the connection between the bottom ring 41 and the side strip 42 of the rubber ring 4. At this time, the deformation notches 413 are located on both sides of the side strip 42. The deformation notches 413 reduce the structural strength of the connection between the side strip 42 and the bottom ring 41, making the connection easier to deform and elongate, so that the side strip 42 can be squeezed and deformed under the action of the top rod 6 or the deformation rod 7, and the structural design is more reasonable. It is worth pointing out that a protrusion protruding into the side groove 22 is provided on the contact seat body 2 and at the connection between the side groove 22 and the bottom groove. The protrusion provides conditions for forming the deformation notch 413 at the connection between the side strip 42 and the bottom ring 41 during injection molding.

[0030] The noise-reducing shaft contact seat provided in the present embodiment includes a contact seat body 2, a bearing 3 and a rubber ring 4; the motor shaft 5 is connected by arranging the bearing 3 in the cylindrical cavity 24 at the open end of the contact seat body 2, and the rubber ring 4 is arranged on the end face and side wall of the contact seat body 2 away from the open end, and the contact seat body 2 is pressed against the cavity wall of the inner cavity of the casing 1 through the rubber ring 4 on its end face and side wall, so that the rubber ring 4 can serve as a structure for the shaft contact seat to contact the casing 1, so that the force acting on the shaft contact seat by the motor shaft 5 during rotation can be weakened by the soft contact between the rubber ring 4 and the casing 1, and the rubber ring 4 is used as a collision buffer structure between the shaft contact seat and the casing 1 to achieve noise reduction and vibration reduction. In addition, the rubber ring 4 and the contact seat body 2 are an integrated injection molding structure, which is not only simple in process and convenient in processing, but also can enhance the connection strength between the rubber ring 4 and the contact seat body 2, which can reduce the overall precision difference caused by later assembly and the wear caused by relative movement after use, and has a longer service life and better noise reduction and vibration reduction effects.

[0031] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A noise-reducing shaft contact seat, installed in the inner cavity of a housing, characterized in that: include: A contact seat body, a bearing and a rubber ring, wherein one end of the contact seat body is an open end, and the open end of the contact seat body is provided with a cylindrical cavity, the bearing is installed in the cylindrical cavity, the end of the motor shaft is inserted into the bearing from the open end of the contact seat body, the rubber ring is provided on the end and the outer side wall of the other end of the contact seat body, the contact seat body and the rubber ring are an integral injection molding structure, and the rubber ring protrudes from the outer surface of the contact seat body and contacts the inner wall of the inner cavity of the casing.

2. The noise-reducing shaft contact seat according to claim 1, characterized in that: The rubber ring includes a bottom ring and a plurality of side strips, the bottom ring and the plurality of side strips are an integral structure, the bottom ring is an annular structure and is sleeved on the end surface of the contact seat body at one end away from the open end, the plurality of side strips are arranged along the axial direction of the motor shaft and are spaced apart from each other on the side wall of the contact seat body, and at the same time, one end of each of the side strips is connected to the bottom ring.

3. The noise-reducing shaft contact seat according to claim 2, characterized in that: A circle of annular end groove is provided on the outer edge of the end surface of one end of the contact seat body away from the open end, the bottom ring is embedded in the end groove, and one side of the bottom ring protrudes out of the end groove along the axial direction of the motor shaft, and a plurality of side grooves are provided on the side wall of the contact seat body and along the axial direction of the motor shaft, each of the side grooves is connected to the end groove, and a side strip is embedded in each of the side grooves, and one side of the side strip protrudes out of the corresponding side groove.

4. The noise-reducing shaft contact seat according to claim 3, characterized in that: At least one glue injection hole is provided on the end surface of the contact seat body and located at one end of the open end thereof, and the glue injection hole is communicated with the side groove.

5. The noise-reducing shaft contact seat according to claim 3, characterized in that: The side strips and the corresponding groove walls of the side grooves are arranged separately.

6. The noise-reducing shaft contact seat according to claim 5, characterized in that: A plurality of telescopic holes are provided on the bottom ring of the rubber ring and on the end surface of the end away from the contact seat body, each of the telescopic holes corresponds to one of the side strips, and the telescopic holes are arranged along the axial direction of the motor shaft. At the same time, a push rod is inserted into each of the telescopic holes, and the end of the push rod abuts against the end of the corresponding side strip connected to the bottom ring.

7. The noise-reducing shaft contact seat according to claim 5, characterized in that: A deformable rod is embedded in each of the side strips along its length direction, and a avoidance hole corresponding to each of the deformable rods is opened on the bottom ring, and one end of each of the deformable rods extends into the corresponding avoidance hole.

8. The noise-reducing shaft contact seat according to claim 7, characterized in that: The deformable rod includes a straight portion and a curved portion, both ends of the curved portion are connected to a straight portion, and the two straight portions are coaxially arranged, the curved portion protrudes outward from the side groove, and one end of a straight portion extends into the corresponding avoidance hole.

9. The noise-reducing shaft contact seat according to claim 8, characterized in that: The length of the straight portion of the deformable rod extending into the avoidance hole is greater than the length of the other straight portion.

10. The noise-reducing shaft contact seat according to claim 6 or 7, characterized in that: A deformation notch is provided at the connection between the bottom ring of the rubber ring and the side strip, and the deformation notch is located on both sides of the side strip.

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