CN211500249U

CN211500249U - Damper and damping adjustment mechanism

Info

Publication number: CN211500249U
Application number: CN201922454417.6U
Authority: CN
Inventors: 陆汉文
Original assignee: Guangdong Dongjian Automobile Technology Co Ltd
Current assignee: Guangdong Dongjian Automobile Technology Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-15
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a attenuator and damping adjustment mechanism, damping adjustment mechanism includes: the elastic part comprises a spline seat, a pressing part, an elastic part and a fixed seat, wherein a mounting cavity is arranged inside the spline seat, a spline part for a spline rod to pass through is arranged in the mounting cavity, the pressing part extends into the mounting cavity and is sleeved outside the spline part, the fixed seat is sleeved outside the spline seat and is abutted against the spline seat, a fixed part is arranged on the fixed seat and extends into the mounting cavity and is movably matched with the pressing part, the fixed part can be fixed with the pressing part, the elastic part is sleeved outside the spline part, one end of the elastic part is abutted against the pressing part, the other end of the elastic part is abutted against the fixed part, and the elastic part is abutted against the side part of the spline seat. The damping adjusting mechanism is more convenient to adjust.

Description

Damper and damping adjustment mechanism

Technical Field

The utility model relates to a technical field of automobile manufacturing especially relates to a attenuator and damping adjustment mechanism.

Background

With the continuous improvement of the functions of the automobile, electric or pneumatic switching modules for the automobile are often used, such as: dampers are additionally arranged on electric support rods of a trunk door and an engine cover of the automobile. The damper can realize the balance of the output force and the reaction force of the electric stay bar spring assembly. However, when the conventional damper needs to adjust the damping, the torsion spring or both ends of the spring need to be twisted and caught in different slots of the damper housing. Therefore, the conventional damper is very inconvenient in adjusting the damping.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a damper and a damping adjustment mechanism that can facilitate adjustment of damping.

The technical scheme is as follows:

a damping adjustment mechanism comprising: the elastic part comprises a spline seat, a pressing part, an elastic part and a fixed seat, wherein a mounting cavity is arranged inside the spline seat, a spline part for a spline rod to pass through is arranged in the mounting cavity, the pressing part extends into the mounting cavity and is sleeved outside the spline part, the fixed seat is sleeved outside the spline seat and is abutted against the spline seat, a fixed part is arranged on the fixed seat and extends into the mounting cavity and is movably matched with the pressing part, the fixed part can be fixed with the pressing part, the elastic part is sleeved outside the spline part, one end of the elastic part is abutted against the pressing part, the other end of the elastic part is abutted against the fixed part, and the elastic part is abutted against the side part of the spline seat.

When the damping adjusting mechanism is used, firstly, an elastic part with a proper elastic coefficient is selected according to the damping requirement of the damping adjusting mechanism, and then the size of the pressing part is determined according to the size of the spline part and the inner space of the mounting cavity. After the pressing piece is sleeved outside the spline portion, the elastic piece is also placed into the mounting cavity, and at the moment, one end of the elastic piece can be abutted against the pressing piece. The fixing seat is sleeved outside the spline seat, the fixing part can extend into the mounting cavity and is fixed after being movably matched with the pressing part, at the moment, the other end of the elastic part can be abutted against the fixing part, and the elastic part is abutted against and pressed between the pressing part and the fixing part. Compared with the traditional mode (the torsion spring or two ends of the spring need to be twisted and clamped in different slots of the damper shell). The damping adjusting mechanism can change the abutting force of the elastic piece on the spline seat (namely, the damping is changed) by changing the interval between the fixing part and the pressing part (the interval adjustment can be realized through the relative movement of the fixing part and the pressing part), and the adjustment is more convenient.

A damper comprising the damping adjustment mechanism, further comprising: and the screw rod piece is inserted into the spline part and matched with the damping adjusting mechanism.

When the damper is used, the screw rod piece is inserted into the damping adjusting mechanism, and the preset damping of the damper is determined through the damping adjusting mechanism. When the damping needs to be adjusted again, compared with the traditional damper (the torsion spring or two ends of the spring need to be twisted and clamped in different slots of the damper shell). The damping adjusting mechanism can change the abutting force of the elastic piece on the spline seat (namely, the damping is changed) by changing the interval between the fixing part and the pressing part (the interval adjustment can be realized through the relative movement of the fixing part and the pressing part), and the damping adjustment is more convenient.

The technical solution is further explained below:

the spline seat is including the conflict cover body and mounting disc, the mounting disc is installed the tip of the conflict cover body, the mounting disc with the conflict cover body is in the conflict cover body is inside encloses into the installation cavity, be equipped with first spline mouth on the mounting disc, spline portion installs in the installation cavity, just first spline mouth with spline portion is corresponding.

One end of the spline part is connected with the mounting disc, and the other end of the spline part protrudes out of the abutting sleeve body.

The pressing part comprises a pressing plate and a pressing sleeve, the pressing plate is arranged at the end of the pressing sleeve, an adaptive opening is formed in the pressing plate and communicated with the inside of the pressing sleeve, the pressing plate and the pressing sleeve are all sleeved outside the spline part, the edge of the pressing plate is abutted against the side part of the abutting sleeve body, and a moving gap for the fixed part to stretch into is reserved between the pressing sleeve and the spline part.

The fixing base includes the installation cover body, the fixed part includes fixed plate and fixed sleeve, the installation cover body cover is established the outside of the conflict cover body, the fixed plate is installed the one end of the installation cover body, offer on the fixed plate and be used for the second spline mouth that spline portion wore out, fixed sleeve dress is established on the fixed plate, fixed sleeve with second spline mouth is linked together, fixed sleeve cover is established spline portion is outside, just fixed sleeve stretches into remove the clearance with support and press the sleeve removal cooperation.

Support press the sleeve with leave the first installation clearance that is used for the elastic component to stretch into between the cover body lateral part of contradicting, fixed sleeve with leave the second installation clearance that is used for the elasticity point to stretch into between the cover body lateral part of contradicting, first installation clearance with the second installation clearance is linked together, the elastic component is in first installation clearance with in the second installation clearance with the lateral part elasticity of the cover body of contradicting is contradicted.

The pressing sleeve is provided with a first thread, and the fixing sleeve is provided with a second thread matched with the first thread.

The damping adjustment mechanism further comprises an installation shell, a fixed lug is arranged on the fixed seat, the installation shell is sleeved outside the fixed seat, and the side portion of the installation shell is abutted to the fixed lug.

The damping adjustment mechanism further comprises a wear-resistant layer, the wear-resistant layer is attached to the inner side of the spline seat, and the wear-resistant layer is used for abutting against the elastic piece.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a damping adjustment mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a spline housing according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a damper and a damping adjustment mechanism according to an embodiment of the present invention.

Description of reference numerals:

100. the mounting structure comprises a spline seat, 110, a mounting cavity, 120, a spline part, 130, a butting sleeve body, 140, a mounting disc, 141, a first spline opening, 200, a pressing part, 210, a pressing plate, 211, an adapting opening, 220, a pressing sleeve, 230, a moving gap, 300, an elastic part, 400, a fixing seat, 410, a fixing part, 411, a fixing plate, 412, a fixing sleeve, 420, a mounting sleeve body, 430, a fixing lug, 500, a first mounting gap, 600, a second mounting gap, 700, a mounting shell, 800 and a wire rod piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

As shown in fig. 1-3, in one embodiment, a damping adjustment mechanism includes: the spline seat 100, the pressing piece 200, the elastic piece 300 and the fixing seat 400, the spline seat 100 is internally provided with a mounting cavity 110, the installation cavity 110 is provided with a spline portion 120 for a spline rod to pass through, the pressing member 200 extends into the installation cavity 110 and is sleeved outside the spline portion 120, the fixing seat 400 is sleeved outside the spline seat 100, the fixing seat 400 is abutted against the spline seat 100, the fixing seat 400 is provided with a fixing part 410, the fixing portion 410 extends into the mounting cavity 110 to be movably engaged with the pressing member 200, and the fixing portion 410 can be mutually fixed with the pressing member 200, the elastic member 300 is sleeved on the outer portion of the spline portion 120, one end of the elastic member 300 abuts against the pressing member 200, the other end of the elastic member 300 abuts against the fixing portion 410, and the elastic member 300 abuts against the side portion of the spline housing 100.

When the damping adjusting mechanism is used, firstly, the elastic member 300 with a proper elastic coefficient is selected according to a preset damping requirement, and then the size of the pressing member 200 is determined according to the size of the spline portion 120 and the inner space of the mounting cavity 110. After the pressing member 200 is sleeved outside the spline portion 120, the elastic member 300 is also placed into the mounting cavity 110, and at this time, one end of the elastic member 300 will be pressed against the pressing member 200. The fixing seat 400 is sleeved outside the spline seat 100, the fixing portion 410 extends into the mounting cavity 110 and is fixed after being movably matched with the pressing member 200, at this time, the other end of the elastic member 300 is pressed against the fixing portion 410, and the elastic member 300 is pressed between the pressing member 200 and the fixing portion 410. Compared with the traditional mode (the torsion spring or two ends of the spring need to be twisted and clamped in different slots of the damper shell). The damping adjusting mechanism can change the contact force of the elastic member 300 to the spline housing 100 (i.e. change the damping) by changing the interval between the fixing portion 410 and the pressing member 200 (the interval adjustment can be realized by the relative movement of the fixing portion 410 and the pressing member 200), and the adjustment is more convenient.

In one embodiment, when assembling the damping adjustment mechanism, the pressing member 200 may be first placed inside the mounting cavity 110, while the pressing member 200 is sleeved outside the spline portion 120, and then the elastic member 300 is placed in the mounting cavity 110, one end of the elastic member 300 abuts against the pressing member 200, and the other end of the elastic member 300 faces the opening of the mounting cavity 110. The fixing seat 400 is sleeved outside the spline seat 100, at this time, the side portion of the fixing seat 400 is abutted against the side portion of the spline seat 100, and the spline seat 100 can rotate relative to the fixing seat 400. The fixing portion 410 is inserted into the mounting cavity 110 along with the movement of the fixing base 400, and the fixing portion 410 is movably engaged with the pressing member 200, at this time, two ends of the elastic member 300 respectively contact with the pressing member 200 and the fixing portion 410, and the elastic member 300 is correspondingly contracted by the relative movement of the pressing member 200 and the fixing portion 410. For example: when the elastic member 300 contracts, the elastic member 300 can generate radial deformation (referring to the radial direction of the elastic member 300) towards the side portion of the spline housing 100, that is, different radial deformation degrees can apply different resisting forces to the side portion of the spline housing 100, so that the damping between the spline housing 100 and the fixed seat 400 is changed.

As shown in fig. 1 and fig. 2, in an embodiment, the spline housing 100 includes a collision sleeve body 130 and a mounting plate 140, the mounting plate 140 is mounted at an end of the collision sleeve body 130, the mounting plate 140 and the collision sleeve body 130 enclose the mounting cavity 110 inside the collision sleeve body 130, the mounting plate 140 is provided with a first spline opening 141, the spline portion 120 is mounted in the mounting cavity 110, and the first spline opening 141 corresponds to the spline portion 120. One end of the spline portion 120 is connected to the mounting plate 140, and the other end of the spline portion 120 protrudes out of the abutting sleeve body 130. Specifically, the spline portion 120 determines the shape of the spline portion 120 according to a spline rod or lead screw, and the spline portion 120 may be a cylinder or a prism. In this embodiment, the spline portion 120 is a cylinder, that is, after the spline portion 120 is installed in the installation cavity 110, the installation cavity 110 is divided into an annular cavity. Further, in order to ensure the sealing performance of the integral structure of the spline housing 100, the interference sleeve body 130, the mounting plate 140 and the spline portion 120 are integrally formed. Further, consider that elastic component 300 can take place deformation in installation cavity 110, the tip protrusion of spline portion 120 in conflict cover body 130 has realized promptly that spline portion 120 wholly runs through conflict cover body 130 avoids elastic component 300 to produce unexpected conflict with the lead screw when warping in installation cavity 110, has guaranteed damping adjustment mechanism's result of use.

In one embodiment, one end of the elastic member 300 abuts against the pressing member 200, the other end of the elastic member 300 abuts against the fixing portion 410, and the elastic member 300 is sleeved outside the spline portion 120. Further, the length of the spline portion 120 can be lengthened, that is, after the fixing seat 400 is sleeved outside the spline seat 100, the spline portion 120 can penetrate out of the fixing seat 400, so that a gap between the spline portion 120 and the fixing portion 410 is avoided, the sealing performance of the space where the elastic member 300 is located is ensured, and the use effect of the damping adjusting mechanism is improved.

As shown in fig. 1, in one embodiment, the pressing element 200 includes a pressing plate 210 and a pressing sleeve 220. The pressing plate 210 is mounted at the end of the pressing sleeve 220, the pressing plate 210 is provided with an adaptation port 211, the adaptation port 211 is communicated with the inside of the pressing sleeve 220, the pressing plate 210 and the pressing sleeve 220 are sleeved outside the spline portion 120, the plate edge of the pressing plate 210 is abutted against the side of the abutting sleeve body 130, and a moving gap 230 for the fixing portion 410 to extend into is reserved between the pressing sleeve 220 and the spline portion 120.

Specifically, the pressure plate 210 is designed according to the cavity shape of the mounting cavity 110 of the spline housing 100 and the diameter of the spline portion 120 (e.g., the cylindrical spline portion 120). For example: when the mounting cavity 110 is an annular cavity, the spline portion 120 is a cylindrical spline portion 120, the pressing plate 210 is a circular plate, the aperture of the adapting opening 211 on the pressing plate 210 is consistent with the diameter of the spline portion 120, that is, after the pressing plate 210 is sleeved outside the spline portion 120, the inner annular edge of the pressing plate 210 is abutted against the spline portion 120, and the outer annular edge of the pressing plate 210 is abutted against the inner side of the spline base 100. Such an embodiment can ensure that the pressing plate 210 can move up and down in the mounting cavity 110 along the height direction of the spline portion 120 (i.e. the direction extending from one end of the spline portion 120 to the other end) or the depth direction of the spline housing 100, and at this time, can ensure that the pressing member 200 compresses the elastic member 300 more uniformly. Further, the fixing portion 410 extends into the moving gap 230, and in the process, one side of the fixing portion 410 abuts against the spline portion 120, and the other side of the fixing portion 410 movably fixes with the abutting sleeve body 130. Such an embodiment described above makes the installation of the damping adjustment mechanism more compact.

As shown in fig. 1, in an embodiment, the fixing base 400 includes a mounting sleeve body 420, the fixing portion 410 includes a fixing plate 411 and a fixing sleeve 412, the mounting sleeve body 420 is sleeved outside the abutting sleeve body 130, the fixing plate 411 is installed at one end of the mounting sleeve body 420, a second spline opening for the spline portion 120 to penetrate out is provided on the fixing plate 411, the fixing sleeve 412 is installed on the fixing plate 411, the fixing sleeve 412 is communicated with the second spline opening, the fixing sleeve 412 is sleeved outside the spline portion 120, and the fixing sleeve 412 extends into the moving gap 230 and the abutting sleeve 220 to be movably matched. Specifically, the mounting sleeve 420, the fixing plate 411 and the fixing sleeve 412 are integrally formed. When the mounting sleeve body 420 is sleeved outside the abutting sleeve body 130, the end of the spline portion 120 passes through the second spline opening and penetrates out of the fixing plate 411, and meanwhile, the mounting cavity 110 in the spline seat 100 can be sealed through the fixing plate 411. In addition, since the spline portion 120 is fixed to the mounting plate 140 only by the end portion, sometimes an installation error occurs in the spline portion 120 in the mounting cavity 110 due to the influence of a machining error, and at this time, the fixing sleeve 412 is sleeved outside the spline portion 120, so that the installation error of the spline portion 120 can be effectively eliminated, and the installation effect of inserting the spline rod into the spline base 100 is improved.

As shown in fig. 1, in an embodiment, a first installation gap 500 is left between the pressing sleeve 220 and the side portion of the collision sleeve body 130 for the elastic element 300 to extend into, a second installation gap 600 is left between the fixing sleeve 412 and the side portion of the collision sleeve body 130 for the elastic element 300 to extend into, the first installation gap 500 is communicated with the second installation gap 600, and the elastic element 300 elastically collides with the side portion of the collision sleeve body 130 in the first installation gap 500 and the second installation gap 600. Specifically, in the first and

second installation gaps

500 and 600, the distance between the pressing sleeve 220 and the interference sleeve body 130 is smaller than the distance between the fixing sleeve 412 and the interference sleeve body 130. Further, after the elastic element 300 enters the first installation gap 500, the pressing sleeve 220 and the abutting sleeve body 130 respectively abut against two sides of the elastic element 300, and a certain gap is left between the fixing sleeve 412 and the abutting sleeve body 130 of the elastic element 300 in the second installation gap 600. That is, the above-mentioned embodiment can firstly ensure the pressing effect of the pressing member 200 on the elastic member 300 (to limit the elastic member 300 from being accidentally separated from the first installation gap 500), and secondly provide a deformation space for the radial deformation of the elastic member 300, so that the deformation force of the elastic member 300 can effectively act on the interference sleeve body 130.

In one embodiment, the pressing sleeve 220 is provided with a first thread, and the fixing sleeve 412 is provided with a second thread adapted to the first thread. Specifically, the thread fit between the pressing sleeve 220 and the fixing sleeve 412 is realized through the first thread and the second thread, and in the above embodiment, on one hand, the relative adjustment between the pressing sleeve 220 and the fixing sleeve 412 can be realized, and on the other hand, the fixing of the pressing sleeve 220 and the fixing sleeve 412 at the preset position can also be realized, so that the installation and the adjustment of the damping adjustment mechanism are more convenient.

As shown in fig. 3, in one embodiment, the damping adjustment mechanism further includes a mounting housing 700. The fixing seat 400 is provided with a fixing bump 430, the mounting shell 700 is sleeved outside the fixing seat 400, and the side part of the mounting shell 700 is abutted to the fixing bump 430. Specifically, the mounting shell 700 protects the fixing seat 400 and the internal components (e.g., the spline seat 100, the spline portion 120, the elastic member 300, etc.). Meanwhile, the fixing protrusion 430 may be an elastic block, that is, after the housing is sleeved outside the fixing base 400, the housing is fixed to the fixing base 400 by elastic deformation of the fixing protrusion 430. This is just one example of an embodiment, for example: a fixing groove corresponding to the fixing protrusion 430 may be formed in the mounting shell 700, and the fixing protrusion 430 is inserted into the fixing groove to fix the mounting shell 700 to the fish fixing seat 400.

In one embodiment, the damping adjustment mechanism further comprises a wear layer. The wear-resistant layer is attached to the inner side of the spline housing 100, and the wear-resistant layer is used for abutting against the elastic member 300. Specifically, the wear-resistant layer is wear-resistant ceramic or wear-resistant rubber. At this moment, the spline housing 100 collides with the elastic member 300 through the wear layer, and the elastic member 300 generates resistance when rubbing with the inside of the spline housing 100 according to the above embodiment, so that the spline rod (lead screw) moves more stably after being inserted into the spline housing 100.

As shown in fig. 1 to 3, in an embodiment, a damper includes the damping adjustment mechanism according to any one of the above embodiments, and further includes: and the wire rod piece 800 is inserted into the spline part 120 to be matched with the damping adjusting mechanism.

When the damper is used, the wire rod member 800 is inserted into the damping adjustment mechanism, and the preset damping of the damper is determined by the damping adjustment mechanism. When the damping needs to be adjusted again, compared to the conventional damper (both ends of the torsion spring or the spring need to be twisted and caught in different slots of the damper mounting case 700). The damping adjusting mechanism can change the contact force of the elastic member 300 to the spline housing 100 (i.e. change the damping) by changing the interval between the fixing portion 410 and the pressing member 200 (the interval adjustment can be realized by the relative movement of the fixing portion 410 and the pressing member 200), and the damping adjustment is more convenient.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A damping adjustment mechanism, comprising: the elastic part comprises a spline seat, a pressing part, an elastic part and a fixed seat, wherein a mounting cavity is arranged inside the spline seat, a spline part for a spline rod to pass through is arranged in the mounting cavity, the pressing part extends into the mounting cavity and is sleeved outside the spline part, the fixed seat is sleeved outside the spline seat and is abutted against the spline seat, a fixed part is arranged on the fixed seat and extends into the mounting cavity and is movably matched with the pressing part, the fixed part can be fixed with the pressing part, the elastic part is sleeved outside the spline part, one end of the elastic part is abutted against the pressing part, the other end of the elastic part is abutted against the fixed part, and the elastic part is abutted against the side part of the spline seat.

2. The damping adjustment mechanism of claim 1, wherein the spline seat comprises a collision sleeve body and a mounting plate, the mounting plate is mounted at an end of the collision sleeve body, the mounting plate and the collision sleeve body enclose the mounting cavity inside the collision sleeve body, the mounting plate is provided with a first spline opening, the spline portion is mounted in the mounting cavity, and the first spline opening corresponds to the spline portion.

3. The damping adjustment mechanism of claim 2, wherein one end of the spline portion is connected to the mounting plate, and the other end of the spline portion protrudes from the interference sleeve.

4. The damping adjustment mechanism according to claim 3, wherein the pressing member includes a pressing plate and a pressing sleeve, the pressing plate is mounted at an end of the pressing sleeve, the pressing plate is provided with an adapter port, the adapter port is communicated with an inside of the pressing sleeve, the pressing plate and the pressing sleeve are both sleeved outside the spline portion, a plate edge of the pressing plate abuts against a side portion of the pressing sleeve body, and a moving gap for the fixing portion to extend into is left between the pressing sleeve and the spline portion.

5. The damping adjustment mechanism according to claim 4, wherein the fixing base includes a mounting sleeve, the fixing portion includes a fixing plate and a fixing sleeve, the mounting sleeve is disposed outside the abutting sleeve, the fixing plate is disposed at one end of the mounting sleeve, a second spline opening for the spline portion to penetrate out is disposed on the fixing plate, the fixing sleeve is communicated with the second spline opening, the fixing sleeve is disposed outside the spline portion, and the fixing sleeve extends into the moving gap to be movably engaged with the abutting sleeve.

6. The damping adjustment mechanism of claim 5, wherein a first installation gap for an elastic member to extend into is left between the pressing sleeve and the side portion of the abutting sleeve body, a second installation gap for an elastic tip to extend into is left between the fixing sleeve and the side portion of the abutting sleeve body, the first installation gap is communicated with the second installation gap, and the elastic member elastically abuts against the side portion of the abutting sleeve body in the first installation gap and the second installation gap.

7. The damping adjustment mechanism of claim 5, wherein the pressing sleeve is provided with a first thread, and the fixing sleeve is provided with a second thread adapted to the first thread.

8. The damping adjustment mechanism of claim 1, further comprising a mounting shell, wherein the fixing base is provided with a fixing protrusion, the mounting shell is sleeved outside the fixing base, and a side portion of the mounting shell abuts against the fixing protrusion.

9. The damping adjustment mechanism of claim 8, further comprising a wear layer affixed to an inner side of the spline housing, the wear layer configured to abut the elastic member.

10. A damper comprising the damping adjustment mechanism according to any one of claims 1 to 9, characterized by further comprising: and the screw rod piece is inserted into the spline part and matched with the damping adjusting mechanism.