Shock absorber

Abstract

The invention discloses a shock absorber which comprises a first main body, a second main body, a third main body and a fourth main body, the second main body is provided with a second sliding surface opposite to the first sliding surface; the shock absorber generates coulomb damping through sliding friction formed between the first sliding face and the second sliding face. According to the shock absorber, aging of elastic materials is avoided, the service life of the shock absorber is guaranteed, the environment adaptability is improved, and it is guaranteed that the number of types of materials is small, the structure is simple and compact, manufacturing and mounting are convenient and fast, and limitation during setting is small.

Description

Technical Field

[0001] The present invention relates to the field of vibration reduction technology, in particular to a vibration reducer. Background Art

[0002] As society pays more and more attention to the stability of the performance of various products in vibration environments, the anti-vibration ability of various products has gradually become one of the core elements of the products. Especially in the military, nuclear power and railway industries, users have always had clear anti-vibration requirements for products in the aforementioned industries.

[0003] More specifically, products often need to meet the following two aspects in a vibration environment. The first aspect is the need to maintain structural integrity, that is, the parts and components that make up the product must not fall off or deform; the second aspect is the need to maintain functional integrity, that is, signal transmission is normal and the output accuracy can meet the requirements.

[0004] In order to meet the above two aspects, the mainstream shock absorbers in the prior art adopt the following three types of settings. The first type of shock absorber is a spring rubber shock absorber, which is formed by connecting a spring and a rubber in parallel, fixing one end of the shock absorber longitudinally on the equipment that needs to be damped, and fixing the other end of the shock absorber longitudinally on the external bracket. This type of shock absorber can also be called a material damping shock absorber; the second type of shock absorber is a spring fluid shock absorber, which is formed by connecting a spring and a cylinder or an oil cylinder in parallel, fixing one end of the shock absorber longitudinally on the equipment that needs to be damped, and fixing the other end of the shock absorber longitudinally on the external bracket. This type of shock absorber can also be called a fluid damping shock absorber; the third type of shock absorber is a spring steel plate shock absorber, which is usually made of only one material, and is formed by stacking and arranging multiple steel plates of different lengths, fixing one end of the shock absorber longitudinally on the equipment that needs to be damped, and fixing the other end of the shock absorber vertically on the external bracket. This setting method is very common especially on the chassis of old trucks.

[0005] However, for spring rubber shock absorbers or material damping shock absorbers, there is the problem of easy aging of elastic materials, which leads to a limited service life of the shock absorber and is not suitable for high temperature environments; for spring fluid shock absorbers or fluid damping shock absorbers, there are basic problems such as large space occupation and complex structure, easy leakage of fluid, and unsuitability for high temperature environments. Furthermore, spring fluid shock absorbers or fluid damping shock absorbers can only be installed longitudinally, which has great limitations, and the air cylinder and oil cylinder need to be precisely manufactured, which leads to high manufacturing costs; for spring steel plate shock absorbers, since multiple pieces need to be stacked, their main disadvantage is also that they occupy a large space and can only be installed longitudinally.

[0006] In view of the problems existing in the aforementioned prior art, it can be seen that there is a demand in the market for a shock absorber that can avoid aging of elastic materials and ensure the service life of the shock absorber, has a small number of material types, a simple and compact structure, is easy to manufacture and install, and has fewer restrictions during setting. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a shock absorber to avoid aging of elastic materials and ensure the service life of the shock absorber, improve environmental adaptability, ensure a simple and compact structure, a small number of material types, easy manufacturing and installation, and fewer restrictions during setting.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] A vibration absorber, comprising:

[0010] A first main body, on which a first sliding surface is disposed; and

[0011] A second main body, the second main body being provided with a second sliding surface opposite to the first sliding surface;

[0012] The shock absorber utilizes the sliding friction formed between the first sliding surface and the second sliding surface to generate Coulomb damping.

[0013] In this solution, both the first body and the second body are important components of the shock absorber. Among them, the first body is provided with a first sliding surface, and the second body is provided with a second sliding surface relative to the first sliding surface, and the first sliding surface and the second sliding surface form Coulomb damping through sliding friction. In other words, compared with the material damping shock absorber, fluid damping shock absorber and spring steel plate shock absorber in the prior art, the shock absorber in this solution can achieve the vibration reduction effect by only using the Coulomb friction force generated when sliding between the first sliding surface and the second sliding surface without using the elasticity of the elastic material, which can fundamentally eliminate the use of elastic materials in the shock absorber, fundamentally avoid the problem of aging of elastic materials and ensure the service life of the shock absorber.

[0014] Secondly, the shock absorber in this scheme adopts a setting mode that the first body and the second body are connected by sliding to generate the Coulomb friction force for vibration reduction. The number of parts used is small overall, so the structure is simple and compact and the manufacturing level has the convenience brought by the small number of parts. Furthermore, in view of the small number of parts of the shock absorber in this scheme, it is also simple in installation, that is, by arranging the first body and the second body respectively between the external structure that needs vibration reduction and slidingly connecting the first sliding surface with the second sliding surface, the generated Coulomb friction force can be used to achieve vibration reduction, so that it can enter the working state without being restricted by longitudinal installation or horizontal installation during installation. This is different from the longitudinal installation that must be adopted by the material damping shock absorber, fluid damping shock absorber and spring steel plate shock absorber in the prior art, and the restrictions when setting the shock absorber are less.

[0015] Preferably, the first body and the second body are spaced apart from each other, and the first body is provided with at least one first extension portion extending toward the second body, the first extension portion at least partially occupies the space separated by the first body and the second body, and the first sliding surface is located on the first extension portion; the second body is provided with at least one second extension portion extending toward the first body, the second extension portion at least partially occupies the space separated by the first body and the second body, and the second sliding surface is located on the second extension portion.

[0016] In this solution, the shock absorber is provided with a first main body and a second main body, and the first main body further extends a first extension portion toward the second main body; similarly, the second main body further extends a second extension portion toward the first main body, and both the first extension portion and the second extension portion at least partially occupy the space separated by the first main body and the second main body, and the first sliding surface provided on the first extension portion and the second sliding surface provided on the second extension portion generate a Coulomb friction force for vibration reduction through sliding engagement. By providing the first extension portion and the second extension portion, the area on the first main body where the first sliding surface can be provided and the area on the second main body where the second sliding surface can be provided can be further increased, and the larger area of ​​the first sliding surface and the second sliding surface make the sliding engagement more sufficient, thereby making the Coulomb friction force generated by the sliding engagement more fully achieve the vibration reduction effect.

[0017] Preferably, at least one limiting unit extending toward the first body is disposed on the second body, the limiting unit at least partially occupies the space separated by the first body and the second body, and the limiting unit is located on one side or both sides of the first extension portion.

[0018] In this solution, the limiting unit at least partially occupies the space separated by the first body and the second body and is located on one side or both sides of the first extension part, so as to prevent the first body from moving relative to the second body in an undesired direction by limiting the first extension part. Specifically, the first body and the second body can make sliding engagement in a specified sliding direction using the first sliding surface and the second sliding surface. However, based on the characteristics of the planar engagement, at this time, the first sliding surface and the second sliding surface may still be offset in directions other than the sliding direction. Therefore, the limiting unit arranged on one side or both sides of the first extension part can further eliminate other possible offsets in one direction or in two directions, respectively, or can provide a maximum offset limit for possible offsets in one direction or in two directions, respectively, so that the first body and the second body on the shock absorber will not be accidentally separated from each other due to the aforementioned offset.

[0019] Preferably, the second extension portion is fixed between two adjacent limiting units, and the interval between the two adjacent limiting units at least partially exposes the second sliding surface and encloses the exposed second sliding surface to form a sliding groove.

[0020] In this solution, the interval between two adjacent limiting units at least partially exposes the second sliding surface, and then the surfaces of the two limiting units facing each other and engaging with the second sliding surface are used to enclose the second sliding surface to form a sliding groove, that is, the two limiting units are respectively located on both sides of the first extension part, thereby limiting the first extension part in the sliding groove, eliminating the aforementioned other possible offsets in both directions or providing the maximum offset limits in both directions from both sides for the possible offsets, further ensuring that there will be no accidental separation between the first body and the second body. In addition, by forming the sliding groove, the spatial structure of the shock absorber is fully utilized, so that the sliding engagement between the first sliding surface and the second sliding surface can be supplemented with sufficient limiting guarantees, further optimizing and ensuring the simplicity and compactness of the structure.

[0021] Preferably, at least two first extension parts are provided on the first body, and at least one limiting unit extending toward the first body is provided on the second body. The limiting unit at least partially occupies the space separated by the first body and the second body, and a space for accommodating the limiting unit is formed between two adjacent first extension parts.

[0022] In this solution, unlike the above-mentioned method of using two limiting units and the second sliding surface to enclose the sliding groove, this solution uses the facing surfaces between the two first extensions to form a matching limit with the limiting unit. Thus, it is also possible to eliminate the above-mentioned other possible deviations in both directions or provide the maximum deviation limit in both directions from both sides for the possible deviation, further ensuring that the first body and the second body will not accidentally separate.

[0023] Preferably, the first extension portion is formed by folding the first body toward the second body, or the first extension portion is formed independently of the first body and installed to the first body; and / or, the second extension portion is formed by folding the second body toward the first body, or the second extension portion is formed independently of the second body and installed to the second body.

[0024] In this solution, two methods for manufacturing the first extension part and the second extension part are provided. Specifically, the first extension part and the second extension part can be formed directly on the first body and the second body by stamping or folding a whole sheet of material, or the first extension part and the second extension part can also be obtained by other manufacturing steps in an independent manner, and then installed on the first body and the second body in a subsequent installation step. In this way, two simple and convenient methods for preparing the first extension part and the second extension part are provided for the shock absorber in this solution.

[0025] Preferably, a pair of first sliding surfaces is provided on the first body, and a pair of second sliding surfaces is provided on the second body.

[0026] In this solution, the shock absorber adopts a pair of first sliding surfaces and second sliding surfaces. The pair of first sliding surfaces and second sliding surfaces can further reduce the degrees of freedom when relative movement occurs between the first body and the second body and prevent overturning, thereby further optimizing the stability of the shock absorber during operation.

[0027] Preferably, a support structure is provided between the two first sliding surfaces; and / or a support structure is provided between the two second sliding surfaces.

[0028] In this solution, by arranging a support structure between the two first sliding surfaces and / or the two second sliding surfaces, the overall structure of the shock absorber can be made more stable and balanced, and the stability of the shock absorber during operation is further optimized.

[0029] Preferably, at least one elastic member is disposed between the first body and the second body, and the at least one elastic member provides a force between the first body and the second body to move the first body and the second body away from each other.

[0030] Preferably, an elastic member is provided between the first body and the second body for changing the frequency of vibration.

[0031] Preferably, the first sliding surface, the second sliding surface and the limiting grooves are all arranged in pairs and symmetrically.

[0032] In this solution, by setting an elastic member between the first body and the second body, the first body and the second body can be biased in a direction away from each other, thereby restoring the first body and the second body that have slid in the specified sliding direction to the initial state before sliding, preparing for the next sliding.

[0033] Preferably, the elastic member is fixed to the first body and / or the second body.

[0034] Preferably, all components in this solution are made of metal material.

[0035] In this solution, the elastic member is in a fixed relationship with the first body and / or the second body, thereby ensuring that the elastic member does not accidentally move between the first body and the second body, further optimizing the stability of the shock absorber during operation.

[0036] The positive progressive effects of the present invention are that the shock absorber in the present invention avoids aging of elastic materials and ensures the service life of the shock absorber, improves environmental adaptability, ensures a simple and compact structure, a small number of material types, easy manufacturing and installation, and fewer restrictions during setting, which is a significant improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of a shock absorber according to an embodiment of the present invention;

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of the first main body of the shock absorber according to one embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the three-dimensional structure of the second body of the shock absorber according to an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] Shock absorber 100

[0042] First body 10

[0043] The first extension portion 11

[0044] The first sliding surface 110

[0045] Second subject 20

[0046] The second extension portion 21

[0047] Second sliding surface 210

[0048] Limit unit 30

[0049] Slide slot 40

[0050] Support structure 50

[0051] Elastic member 60

[0052] Fastener 70 DETAILED DESCRIPTION

[0053] The present invention is further described below by way of examples, but the present invention is not limited to the scope of these examples.

[0054] like Figure 1-3 As shown, a shock absorber 100 includes:

[0055] A first main body 10 having a first sliding surface 110 disposed thereon; and

[0056] A second main body 20, wherein a second sliding surface 210 is provided on the second main body 20 and is opposite to the first sliding surface 110;

[0057] The shock absorber 100 utilizes the sliding friction between the first sliding surface 110 and the second sliding surface 210 to generate Coulomb damping.

[0058] In specific implementation, the first body 10 and the second body 20 are both important components of the shock absorber 100. Among them, the first body 10 is provided with a first sliding surface 110, and the second body 20 is provided with a second sliding surface 210 relative to the first sliding surface 110, and the first sliding surface 110 and the second sliding surface 210 form a coulomb damping through sliding friction. In other words, compared with the material damping shock absorber, fluid damping shock absorber and spring steel plate shock absorber in the prior art, the shock absorber 100 in the present solution can achieve the vibration reduction effect by only using the coulomb friction force generated when sliding between the first sliding surface 110 and the second sliding surface 210 without using the elasticity of the elastic material, which can fundamentally avoid the use of elastic material in the shock absorber 100, fundamentally avoid the problem of aging of the elastic material and ensure the service life of the shock absorber 100.

[0059] Secondly, the shock absorber 100 in the present solution adopts a setting mode that the first body 10 and the second body 20 are connected by sliding to generate the Coulomb friction force for vibration reduction. The number of parts used as a whole is small, so the structure is simple and compact and the manufacturing level has the convenience brought by the small number of parts. Furthermore, in view of the small number of parts of the shock absorber 100 in the present solution, it is also simple in installation, that is, by respectively arranging the first body 10 and the second body 20 between the external structure that needs vibration reduction and slidingly connecting the first sliding surface 110 and the second sliding surface 210, the generated Coulomb friction force can be used to achieve vibration reduction, so that it can enter the working state without being restricted by longitudinal installation or horizontal installation during installation. Therefore, it is different from the longitudinal installation that must be adopted by the material damping shock absorber, fluid damping shock absorber and spring steel plate shock absorber 100 in the prior art, and the setting of the shock absorber 100 is less restricted.

[0060] It should be noted that the first sliding surface 110 and the second sliding surface 210 used in this embodiment are both planes, thereby providing a simplest way to set the sliding surface. However, in practical applications, those skilled in the art should also be able to think of making appropriate adjustments to the first sliding surface 110 and the second sliding surface 210, such as adjusting the two to curved surfaces with matching shapes, without hindering the first sliding surface 110 and the second sliding surface 210 from generating Coulomb friction through sliding engagement, and this embodiment does not limit this.

[0061] Furthermore, the first body 10 and the second body 20 used in this embodiment are both in the shape of straight strips, thereby providing a simplest way to set the body. However, in practical applications, those skilled in the art should also be able to adjust the specific shapes of the first body 10 and the second body 20, such as adding a certain curvature to the overall shape of the first body 10 and the second body 20, or directly setting the first body 10 and the second body 20 to a complex shape with multiple curved surfaces or multiple corners, so that the shock absorber 100 can properly fit the outer contour of various external structures, and this embodiment does not limit this.

[0062] Furthermore, the first sliding surfaces 110 in the present embodiment are uniformly arranged inwardly and the second sliding surfaces 210 in the present embodiment are uniformly arranged outwardly, thereby providing a setting mode in which the first sliding surface 110 is slidably engaged with the second sliding surface 210 from the outside to the inside. However, in practical applications, those skilled in the art should also be able to adjust the setting mode of the first sliding surface 110 and the second sliding surface 210 according to actual needs, for example, the first sliding surface 110 is uniformly arranged outwardly and the second sliding surface 210 is uniformly arranged inwardly accordingly, and the present embodiment does not limit this. In addition, when a plurality of first sliding surfaces 110 and a plurality of second sliding surfaces 210 are provided, those skilled in the art should also be able to think that some of the first sliding surfaces 110 can be arranged inwardly and the second sliding surfaces 210 at the corresponding positions can be arranged outwardly accordingly, and the other first sliding surfaces 110 can be arranged outwardly and the second sliding surfaces 210 at the corresponding positions can be arranged inwardly accordingly, and the present embodiment does not limit this.

[0063] like Figure 1-3 As shown, the first body 10 and the second body 20 are spaced apart from each other, and the first body 10 is provided with two first extension parts 11 extending toward the second body 20, and the first extension parts 11 occupy the space separated by the first body 10 and the second body 20. More specifically, the first body 10 and the second body 20 surround a space for accommodating the first extension parts 11 through their own shape characteristics, and the first sliding surface 110 is located on the first extension parts 11; the second body 20 is provided with two second extension parts 21 extending toward the first body 10, and the second extension parts 21 occupy the space separated by the first body 10 and the second body 20, and the second sliding surface 210 is located on the second extension parts 21.

[0064] In a specific implementation, the shock absorber 100 is provided with a first main body 10 and a second main body 20, and the first main body 10 further extends a first extension portion 11 toward the second main body 20; similarly, the second main body 20 further extends a second extension portion 21 toward the first main body 10, and the first extension portion 11 and the second extension portion 21 both occupy the space separated by the first main body 10 and the second main body 20, and the first sliding surface 110 provided on the first extension portion 11 and the second sliding surface 210 provided on the second extension portion 21 generate the Coulomb friction force for vibration reduction through sliding engagement. By providing the first extension portion 11 and the second extension portion 21, the area on which the first sliding surface 110 can be provided on the first main body 10 and the area on which the second sliding surface 210 can be provided on the second main body 20 can be further increased, and the larger area of ​​the first sliding surface 110 and the second sliding surface 210 makes the sliding engagement more sufficient, and thus the Coulomb friction force generated by the sliding engagement can more fully achieve the vibration reduction effect.

[0065] like Figure 1-3 As shown, three limiting units 30 extending toward the first main body 10 are provided on the second main body 20, and are respectively located on both sides and the middle section of the second main body 20. The limiting units 30 occupy the space separated by the first main body 10 and the second main body 20, and the limiting units 30 are located on both sides of the first extension portion 11.

[0066] In specific implementation, the limiting unit 30 occupies the space separated by the first body 10 and the second body 20 and is located on both sides of the first extension portion 11, so as to prevent the first body 10 from moving relative to the second body 20 in an undesired direction by limiting the first extension portion 11. Specifically, the first body 10 and the second body 20 can make sliding engagement in a specified sliding direction using the first sliding surface 110 and the second sliding surface 210. However, based on the characteristics of planar engagement, at this time, the first sliding surface 110 and the second sliding surface 210 may still be offset in directions other than the sliding direction. Therefore, the limiting unit 30 attached to both sides of the first extension portion 11 in this embodiment can eliminate other possible offsets in both directions, thereby preventing the first body 10 and the second body 20 on the shock absorber 100 from accidentally detaching due to the aforementioned offset.

[0067] In addition, those skilled in the art should also be able to conceive of providing an appropriate space between the limit unit 30 and the first extension portion 11, thereby allowing the first body 10 and the second body 20 to use the aforementioned gap in both directions to provide a maximum deflection limit for possible displacement, thereby providing additional degrees of freedom for vibration reduction, which is not limited in this embodiment.

[0068] like Figure 1-3 As shown, the second extension portion 21 is fixed between two adjacent limiting units 30 , and the second sliding surface 210 is exposed at a distance between the two adjacent limiting units 30 and is surrounded by the exposed second sliding surface 210 to form a sliding groove 40 .

[0069] In the specific implementation, the interval between two adjacent limiting units 30 exposes the second sliding surface 210, and then the surfaces facing each other and engaged with the second sliding surface 210 are used to enclose the second sliding surface 210 to form a sliding groove 40, that is, the two limiting units 30 are respectively located on both sides of the first extension 11, so that the first extension 11 is restricted in the sliding groove 40, eliminating the aforementioned other possible deviations in both directions or providing the maximum deflection limits from both sides in both directions for the possible deviations, further ensuring that there will be no accidental separation between the first body 10 and the second body 20. In addition, by forming the sliding groove 40, the spatial structure of the shock absorber 100 is fully utilized, so that the sliding engagement between the first sliding surface 110 and the second sliding surface 210 can be supplemented with sufficient limiting protection, further optimizing and ensuring the simplicity and compactness of the structure.

[0070] like Figure 1-3 As shown, referring to the middle position of the shock absorber 100 of this embodiment, two first extension portions 11 are provided on the first body 10, and a limiting unit 30 extending toward the first body 10 and located in the middle section of the second body 20 is provided on the second body 20. The limiting unit 30 occupies the space separated by the first body 10 and the second body 20, and a space for accommodating the limiting unit 30 is formed between the two adjacent first extension portions 11.

[0071] In specific implementation, unlike the above-mentioned method of using two limiting units 30 and the second sliding surface 210 to enclose the sliding groove 40, this solution uses the facing surfaces between the two first extensions 11 to form a matching limit with the limiting unit 30. Therefore, it is also possible to eliminate the above-mentioned other possible deviations in both directions or provide the maximum deflection limit from both sides in both directions for the possible deviation, further ensuring that the first body 10 and the second body 20 will not accidentally separate.

[0072] like Figure 1-3 As shown, the first extension portion 11 is formed by folding the first body 10 toward the second body 20 ; the second extension portion 21 is formed independently of the second body 20 and mounted to the second body 20 .

[0073] In specific implementation, the first extension portion 11 is directly formed on the first body 10 by stamping and folding a whole sheet of material, and the second extension portion 21 is independently manufactured through other manufacturing steps and installed on the second body 20 in a subsequent installation step.

[0074] like Figure 1-3 As shown, a pair of first sliding surfaces 110 are disposed on the first body 10 , and a pair of second sliding surfaces 210 are disposed on the second body 20 .

[0075] In a specific implementation, the shock absorber 100 adopts a pair of first sliding surfaces 110 and second sliding surfaces 210. The pair of first sliding surfaces 110 and second sliding surfaces 210 can further reduce the degrees of freedom during relative movement between the first body 10 and the second body 20 and prevent overturning, thereby further optimizing the stability of the shock absorber 100 during operation.

[0076] like Figure 1-3 As shown, a support structure 50 is disposed between the two second sliding surfaces 210 .

[0077] In specific implementation, by setting the support structure 50 between the two second sliding surfaces 210, the overall structure of the shock absorber 100 can be made more stable and balanced, and the stability of the shock absorber 100 during operation is further optimized. It should be noted that, although in this embodiment, only an arched support structure 50 is set between the two second sliding surfaces 210, in order to achieve the support between the second sliding surfaces 210 in the simplest way, those skilled in the art should also be able to further think of setting the support structure 50 between the first sliding surfaces 110, and this embodiment does not limit this. In addition, those skilled in the art should also be able to think of using the common support methods in the field to optimize the structure of the support structure 50 itself, such as using a truss structure or reinforcing ribs between the two first sliding surfaces 110 or the two second sliding surfaces 210, and this embodiment does not limit this.

[0078] like Figure 1-3 As shown, two elastic members 60 are disposed between the first body 10 and the second body 20 , and the two elastic members 60 provide a force between the first body 10 and the second body 20 to make the first body 10 and the second body 20 move away from each other.

[0079] In a specific implementation, by setting an elastic member 60 between the first body 10 and the second body 20, the first body 10 and the second body 20 can be biased in a direction away from each other, thereby restoring the first body 10 and the second body 20 that have slid in the specified sliding direction to the initial state before sliding, so as to prepare for the next sliding. It should be noted that although the elastic member 60 set between the first body 10 and the second body 20 can indeed play a part in the effect of vibration reduction, the shock absorber 100 in this embodiment is still intended to mainly use Coulomb friction to achieve vibration reduction. The main significance of setting the elastic member 60 is to restore the first body 10 and the second body 20 that have slid to the initial state before sliding, that is, to enable the shock absorber 100 to provide multiple vibration reductions.

[0080] More specifically, the elastic member 60 used in this embodiment is a spring. As an alternative to the spring, those skilled in the art should also be able to conceive of using other elastic members 60 with deformation or deformation capabilities commonly used in the art, such as elastic rubber, hydraulic pipes, etc., and this embodiment does not limit this.

[0081] like Figure 1-3 As shown, the elastic member 60 is fixed to the first body 10 and the second body 20 .

[0082] In a specific implementation, the elastic member 60 is in a fixed relationship with the first body 10 and the second body 20, thereby ensuring that the elastic member 60 will not accidentally move between the first body 10 and the second body 20, further optimizing the stability of the shock absorber 100 during operation. In this embodiment, the elastic member 60 is connected in series between the first body 10 and the second body 20 by threaded fastening provided by the fastener 70. However, as an alternative embodiment, those skilled in the art should also be able to think of a setting method in which only the elastic member 60 is fixed to one of the first body 10 or the second body 20. On the basis of being able to ensure that the elastic member 60 will not accidentally move between the first body 10 and the second body 20, this embodiment does not limit this.

[0083] More specifically, as an alternative implementation method to threaded fastening, those skilled in the art should also be able to conceive of using common fixing methods in the art such as snap-on or plug-in, and this embodiment does not limit this.

[0084] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A shock absorber, characterized in that: The shock absorber comprises: A first main body, wherein a first sliding surface is provided on the first main body; and a second body, the second body being provided with a second sliding surface opposite to the first sliding surface; The shock absorber generates Coulomb damping by using the sliding friction between the first sliding surface and the second sliding surface.

2. The shock absorber according to claim 1, characterized in that The first body and the second body are arranged to be spaced apart from each other, and the first body is provided with at least one first extension portion extending toward the second body, the first extension portion at least partially occupies the space separated by the first body and the second body, and the first sliding surface is located on the first extension portion; the second body is provided with at least one second extension portion extending toward the first body, the second extension portion at least partially occupies the space separated by the first body and the second body, and the second sliding surface is located on the second extension portion.

3. The shock absorber according to claim 2, characterized in that The second body is provided with at least one limiting unit extending toward the first body, the limiting unit at least partially occupies the space separated by the first body and the second body, and the limiting unit is located on one side or both sides of the first extension portion.

4. The shock absorber according to claim 3, characterized in that The second extension portion is fixed between two adjacent limiting units, and the interval between the two adjacent limiting units at least partially exposes the second sliding surface and forms a sliding groove together with the exposed second sliding surface.

5. The vibration absorber according to claim 2, characterized in that: At least two first extension parts are arranged on the first main body, and at least one limiting unit extending toward the first main body is arranged on the second main body. The limiting unit at least partially occupies the space separated by the first main body and the second main body, and a space for accommodating the limiting unit is formed between two adjacent first extension parts.

6. The shock absorber according to claim 2, characterized in that The first extension portion is formed by folding the first body toward the second body, or the first extension portion is formed independently of the first body and installed to the first body; and / or, the second extension portion is formed by folding the second body toward the first body, or the second extension portion is formed independently of the second body and installed to the second body.

7. The shock absorber according to claim 1, characterized in that The first body is provided with a pair of the first sliding surfaces, and the second body is provided with a pair of the second sliding surfaces.

8. The vibration absorber according to claim 7, characterized in that A supporting structure is provided between the two first sliding surfaces; and / or a supporting structure is provided between the two second sliding surfaces.

9. The vibration absorber according to any one of claims 1 to 8, characterized in that: At least one elastic member is disposed between the first body and the second body, and the at least one elastic member provides a force between the first body and the second body to make the first body and the second body move away from each other.

10. The vibration absorber according to claim 9, characterized in that The elastic member is fixed to the first body and / or the second body.

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