Piston retainer ring, shock absorber assembly and vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicle parts, and discloses a piston check ring, a shock absorber assembly and a vehicle. The piston check ring comprises a check ring body, a first limiting piece and a second limiting piece, the first limiting piece is located on the side, facing a piston cylinder, of the check ring body, and the first limiting piece is used for limiting circumferential movement of the piston cylinder; the second limiting piece is located on the side, facing the shock absorber body, of the check ring body and used for limiting circumferential movement of the shock absorber body. By means of the technical scheme, abnormal sounds generated in the matching area of the air spring and the shock absorber can be reduced, and the driving feeling is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicle parts, and in particular to a piston retaining ring, a shock absorber assembly and a vehicle. Background Art

[0002] With the development of automobile technology, users' requirements for comfort have increased. As a high-end configuration for improving automobile comfort, the popularity of air suspension has also increased. The structure of air suspension is more complex than that of ordinary suspension, and its mechanical structure is mainly composed of air springs and shock absorbers. At present, the front suspension of vehicles equipped with air suspension on the market generally adopts strut-type air spring shock absorbers, which integrates the air spring and shock absorber as an assembly. When driving on roads that cause large torsion, or in other situations that may cause large-angle steering, vehicles with this assembly structure are prone to abnormal noise in the matching area of ​​​​the air spring and shock absorber, thereby affecting the NVH performance (Noise, Vibration, Harshness) of the vehicle. Utility Model Content

[0003] In view of this, the embodiments of the present application provide a piston retaining ring, a shock absorber assembly and a vehicle, which can reduce abnormal noise generated in the matching area between the air spring and the shock absorber.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides a piston retaining ring, comprising a retaining ring body, a first limit member and a second limit member, wherein the first limit member is arranged on one side of the retaining ring body and faces the piston cylinder, and is used to cooperate with the piston cylinder to limit its circumferential movement; the second limit member is arranged on the other side of the retaining ring body and faces the shock absorber body, and is used to cooperate with the shock absorber body to limit its circumferential movement.

[0006] The piston retaining ring provided in the embodiment of the present application has an abnormal noise problem in the matching area between the piston cylinder and the shock absorber body when the vehicle is twisted. After analyzing the abnormal noise problem, it is found that the abnormal noise problem is caused by the relative rotation between the piston cylinder and the shock absorber body, and the piston retaining ring can solve the problem of relative rotation between the two. Through the setting of the piston retaining ring in the embodiment of the present application, the piston cylinder, shock absorber and piston retaining ring can form a circumferential limit at the connection after the three are assembled. When external factors drive the shock absorber or the piston cylinder to have a tendency to rotate relative to each other, the first limiter and the second limiter of the piston retaining ring can limit their relative rotation, thereby solving the problem of abnormal noise caused by friction.

[0007] In a possible implementation of the present application, the piston retaining ring further includes a third position-limiting member disposed on the outer edge of the retaining ring body, and the third position-limiting member is used to abut against the outer peripheral wall of the piston cylinder.

[0008] In a possible implementation of the present application, the third limiter is connected to the first limiter, and the third limiter extends out of the first limiter in the circumferential direction of the retaining ring body; and / or the third limiter extends out of the first limiter in the axial direction of the retaining ring body.

[0009] In a possible implementation of the present application, the retaining ring body also includes an extension cylinder, which is located on the side of the retaining ring body facing the piston cylinder and extends axially, the interior of the extension cylinder is used for the shock absorber body to pass through, the inner wall of the extension cylinder is used to abut the shock absorber body, and the outer wall of the extension cylinder is used to abut the inner wall of the piston cylinder.

[0010] In a possible implementation of the present application, the retaining ring body further includes at least one fourth position-limiting member, which is disposed on the outer wall of the extension tube and is used to abut against the inner wall of the piston tube.

[0011] In a possible implementation of the present application, at least one fifth limiter is provided on the inner wall of the extension tube; the interior of the extension tube is used for the shock absorber body to pass through, and the fifth limiter is used to abut against the outer wall of the shock absorber body.

[0012] In the second aspect, the embodiments of the present application also provide a shock absorber assembly, including a piston cylinder, a shock absorber body and a piston retaining ring provided by any embodiment of the above-mentioned first aspect, wherein a first limiting groove is provided at one end of the piston cylinder, and the opening of the first limiting groove is arranged along the axial direction of the piston cylinder; a second limiting groove is provided on the outer wall of the shock absorber body, and the opening of the second limiting groove is arranged along the axial direction of the piston cylinder; the piston retaining ring is used to connect the piston cylinder and the shock absorber body, the first limiting piece extends into the first limiting groove, and the second limiting piece extends into the second limiting groove.

[0013] In a shock absorber assembly provided by an embodiment of the present application, a first limiter extends into a first limiter groove to limit the circumferential movement of a piston cylinder; a second limiter extends into a second limiter groove to limit the circumferential movement of a shock absorber body; that is, the shock absorber assembly overcomes the problem of relative rotation between the piston cylinder and the shock absorber body, thereby solving the problem of abnormal noise in the shock absorber assembly. In addition, since the shock absorber assembly includes the piston retaining ring provided by any embodiment of the above-mentioned first aspect, the shock absorber assembly also has the same technical effect as the above-mentioned piston retaining ring.

[0014] In a possible implementation of the present application, the shock absorber body further includes an abutment member, the abutment member is connected to an outer side wall of the shock absorber body, and the second limiting groove is provided on the abutment member;

[0015] and / or,

[0016] The first limiting member abuts against the inner wall of the first limiting groove at two sides along the circumference of the retaining ring body, and / or the second limiting member abuts against the inner wall of the second limiting groove at two sides along the circumference of the retaining ring body.

[0017] On the third aspect, the embodiment of the present application also provides another shock absorber assembly, including a piston cylinder and a shock absorber body, the shock absorber body extends into the piston cylinder, and a first limit piece is provided at one of the end of the piston cylinder facing the shock absorber body and the end of the shock absorber body facing the piston cylinder, and a first limit groove is provided at the other of the end of the piston cylinder facing the shock absorber body and the end of the shock absorber body facing the piston cylinder, the opening of the first limit groove is arranged along the axial direction of the piston cylinder, and the first limit piece extends into the first limit groove.

[0018] The embodiment of the present application provides a shock absorber assembly, wherein the piston cylinder is directly assembled with the shock absorber. Since one of the end of the piston cylinder facing the shock absorber body and the end of the shock absorber body facing the piston cylinder is provided with a first limiter, and the other is provided with a first limiter groove, and the opening direction of the first limiter groove is arranged along the axial direction of the piston cylinder, the first limiter extending into the first limiter groove can limit the circumferential relative movement between the piston cylinder and the shock absorber body. Since it is found that the abnormal noise problem is caused by the relative movement between the piston cylinder and the shock absorber body, when the circumferential relative movement between the piston cylinder and the shock absorber body is limited, the abnormal noise problem is also solved.

[0019] In a fourth aspect, an embodiment of the present application further provides a vehicle, comprising the shock absorber assembly provided by any embodiment of the second or third aspect above.

[0020] A vehicle provided in an embodiment of the present application includes the shock absorber assembly provided in any of the second and third embodiments above, and therefore has the same technical effect, that is, it can reduce the abnormal noise of the shock absorber assembly to improve the driving experience of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a piston retaining ring provided in an embodiment of the present application;

[0022] Figure 2 A schematic structural diagram of a piston retaining ring from another perspective provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of the piston cylinder provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of the shock absorber body provided in an embodiment of the present application;

[0025] Figure 5A schematic diagram of the partial structure of the shock absorber assembly provided in an embodiment of the present application.

[0026] Reference numerals:

[0027] 1-piston retaining ring; 11-first limiting member; 12-second limiting member; 13-retaining ring body; 131-fourth limiting member; 132-extension tube; 1321-fifth limiting member; 14-third limiting member; 2-piston cylinder; 21-first limiting groove; 211-first opening; 3-shock absorber body; 31-second limiting groove; 311-second opening; 32-abutment member. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0029] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0030] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0031] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0032] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0033] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0034] The embodiment of the present application provides a vehicle. It should be noted that the vehicle in the present application may refer to a large car, a small car, a special-purpose car, etc. For example, according to the vehicle model, the vehicle in the present application may be a sedan model, an off-road model, a multi-purpose vehicle (MPV) model or other models. For a vehicle, the suspension system is an important part of the vehicle. It connects the wheels and the body, plays a role in supporting the vehicle and buffering, and can enhance the driving experience of the vehicle. In modern cars, air suspension, as an advanced suspension technology, is increasingly favored due to its excellent performance and high adjustability. The air suspension structure mainly includes an airbag, a piston, a sealing system (including a piston retaining ring and other seals), a shock absorber and a control unit. Specifically, the airbag and the piston work together to adjust the height of the vehicle and the stiffness of the air spring by changing the internal air pressure; the sealing system ensures the stability of the air pressure inside the airbag and prevents air leakage; the shock absorber reduces the vibration when the air spring is extended and retracted through damping, thereby improving ride comfort; the control unit automatically adjusts the airbag pressure and the damping force of the shock absorber according to the real-time status of the vehicle and the driver's needs to achieve optimal driving performance.

[0035] The embodiment of the present application provides a shock absorber assembly. It should be noted that the shock absorber assembly in the present application is one of the components of the air suspension system, which is integrated with an air spring and a shock absorber. Figure 5 The shock absorber assembly in the present application includes a shock absorber body 3 and a piston barrel 2, wherein the shock absorber body 3 is a cylinder barrel, and the piston barrel 2 is one of the components of the air spring.

[0036] The embodiment of the present application also provides a piston retaining ring 1. It should be noted that the general piston retaining ring 1 has sealing properties to ensure the air tightness of the air spring; the piston retaining ring 1 also has a connecting function, which is used to connect two parts that need to be assembled. For example, in the present application, the opposite sides of the piston retaining ring 1 are used to connect the piston cylinder 2 and the shock absorber body 3 respectively.

[0037] At present, the strut-type air spring shock absorber is generally used in the market. This structure integrates the air spring and shock absorber as an assembly. When a vehicle with this configuration is driving on a large torsional road or turning at a large angle, abnormal noise is easily generated in the matching area between the air spring and the shock absorber, which affects the driving experience and causes customer complaints. After analyzing the abnormal noise problem, it was found that the root cause of the abnormal noise is that the air spring and the shock absorber are generally limited by interference fit, without other limiting structures; when the car passes through a torsional road or turns at a large angle, the front spring has a large swing angle, and the friction force generated by the interference fit cannot withstand the torsional force generated by the suspension, causing the air spring and the shock absorber to rotate relative to each other, thereby generating friction abnormal noise.

[0038] On this basis, the embodiment of the present application provides a piston retaining ring 1, such as Figure 1 and 2 As shown, the piston retaining ring 1 includes a retaining ring body 13, a first stopper 11 and a second stopper 12, wherein the first stopper 11 is arranged on one side of the retaining ring body 1 and faces the piston cylinder 2, and is used to cooperate with the piston cylinder 2 to limit its circumferential movement; the second stopper 12 is arranged on the other side of the retaining ring body 1 and faces the shock absorber body 3, and is used to cooperate with the shock absorber body 3 to limit its circumferential movement. During assembly, the two opposite sides of the retaining ring body 13 are respectively used to connect the piston cylinder 2 and the shock absorber, so that the piston cylinder 2 and the first stopper 11, the shock absorber body 3 and the second stopper 12 form a stopper effect at their respective connections, thereby limiting the circumferential relative rotation between the piston cylinder 2 and the retaining ring body 13, and between the shock absorber body 3 and the retaining ring body 13, and further limiting the circumferential relative rotation between the piston cylinder 2 and the shock absorber body 3. Therefore, the piston retaining ring 1 can reduce the friction noise generated in the matching area between the piston cylinder 2 and the shock absorber body 3.

[0039] For example, Figure 3 and 4In one embodiment of the present application, a first limiting groove 21 is provided at one end of the piston cylinder 2, and the opening of the first limiting groove 21 is arranged along the axial direction of the piston cylinder 2; a second limiting groove 31 is provided on the outer wall of the shock absorber body 3, and the opening of the second limiting groove 31 is arranged along the axial direction of the piston cylinder 2; the piston retaining ring 1 is used to connect the piston cylinder 2 and the shock absorber body 3, the first limiting member 11 extends into the first limiting groove 21, and the second limiting member 12 extends into the second limiting groove 31. That is, by setting a first limiting groove 21 at one end of the piston cylinder 2 and a second limiting groove 31 on the outer wall of the shock absorber body 3, and since the openings of the first limiting groove 21 and the second limiting groove 31 are set along the axial direction of the piston cylinder 2, when the piston cylinder 2, the piston retaining ring 1 and the shock absorber body 3 are connected in sequence, the first limiting member 11 can extend into the first limiting groove 21 and the second limiting member 12 can extend into the second limiting groove 31, thereby forming a structure with a limiting function, which limits the relative rotation of the piston cylinder 2 and the shock absorber body 3.

[0040] Further, in some embodiments, Figure 4 The shock absorber body 3 also includes an abutment 32, which is connected to the outer wall of the shock absorber body 3, and the second limiting groove 31 is provided on the abutment 32. This arrangement provides a connection method that makes the connection between the shock absorber body 3 and the retaining ring body 13 more flexible. That is, by arranging the abutment 32 at different positions in the length direction of the shock absorber body 3, different connection requirements can be met. Exemplarily, the abutment 32 is circumferentially arranged around the outer wall of the shock absorber body 3, and the abutment 32 can be set as an annular plate, so as to increase the contact area between the shock absorber body 3 and the retaining ring body 13 and improve the stability of the connection between the two.

[0041] Furthermore, if Figure 1-4In some embodiments, the first limiting member 11 and the second limiting member 12 may be raised portions on the retaining ring body 13, and the raised portions may be cylindrical projections or rectangular projections. The first limiting groove 21 and the second limiting groove 31 may be cylindrical grooves or rectangular grooves. Exemplarily, the first limiting groove 21 is formed by a first opening 211, and the first opening 211 penetrates the end of the piston cylinder 2 along the wall thickness direction of the piston cylinder 2; when the second limiting groove 31 is provided on the abutment 32, the second limiting groove 31 is formed by a second opening 311, and the second opening 311 penetrates the contour edge of the abutment 32 along the axial direction of the abutment 32. Such a configuration facilitates the processing of the first limiting groove 21 and the second limiting groove 31. In addition, it can be understood that the embodiments of the present application do not limit the specific forms of the first limiting member 11, the second limiting member 12, the first limiting groove 21 and the second limiting groove 31, as long as the first limiting member 11 cooperates with the first limiting groove 21, and the second limiting member 12 cooperates with the second limiting groove 31, a limiting effect can be formed. In some embodiments, the first limiting member 11 abuts against the inner wall of the first limiting groove 21 on both sides of the circumference of the retaining ring body 13, and / or the second limiting member 12 abuts against the inner wall of the second limiting groove 31 on both sides of the circumference of the retaining ring body 13. That is, the circumferential length of the first limiting groove 21 and / or the second limiting groove 31 is limited, so as to reduce the possibility of the first limiting member 11 moving in the first limiting groove 21 along the circumferential direction of the retaining ring body 13, and / or the possibility of the second limiting member 12 moving in the second limiting groove 31 along the circumferential direction of the retaining ring body 13, thereby improving the connection stability of the piston cylinder 2 and the shock absorber body 3 in the circumferential direction.

[0042] It should be noted that, in the embodiments of the present application, there is no restriction on the number of the first limit members 11 and the second limit members 12 and their circumferential distribution positions. The first limit members 11 / the second limit members 12 can be symmetrically arranged around the axis, and the first limit members 11 / the second limit members 12 can also be evenly distributed in the circumference of the retaining ring body 13 in multiple numbers; correspondingly, the first limit groove 21 and the second limit groove 31 can be arranged accordingly according to the corresponding first limit members 11 and the second limit members 12.

[0043] Furthermore, in some embodiments of the present application, the piston retaining ring 1 further includes a third stopper 14 disposed on the outer edge of the retaining ring body 1, and the third stopper 14 is used to abut against the outer peripheral wall of the piston cylinder 2. Since there is a risk of partial warping at one end of the piston cylinder 2 close to the retaining ring body 13, the third stopper 14 is provided to limit the radial direction of the piston cylinder 2 to improve the stability of the connection between the piston cylinder 2 and the piston retaining ring 1. Exemplarily, the third stopper 14 is connected to the first stopper 11, and the third stopper 14 extends out of the first stopper 11 in the circumferential direction of the retaining ring body 1; and / or, the third stopper 14 extends out of the first stopper 11 in the axial direction of the retaining ring body 1.

[0044] In some embodiments, the retaining ring body 1 further includes an extension tube 132, which is located on the side of the retaining ring body 1 facing the piston cylinder 2 and extends axially, the interior of the extension tube 132 is used for the shock absorber body 3 to pass through, the inner side wall of the extension tube 132 is used to abut the shock absorber body 3, and the outer side wall of the extension tube 132 is used to abut the inner wall of the piston cylinder 2. Such a configuration is equivalent to extending the length of the retaining ring body 13 in the axial direction of the retaining ring body 13, increasing the contact area between the retaining ring body 13 and the piston cylinder 2 and the shock absorber body 3, and further improving the assembly stability among the three. In addition, since the extension tube 132 is located on the side of the retaining ring body 13 facing the piston cylinder 2, it can also guide the installation of the piston cylinder 2 on the fourth limiter 131 and the first limiter 11.

[0045] Furthermore, the retaining ring body 13 further includes at least one fourth stopper 131, which is arranged on the outer wall of the extension cylinder and is used to abut against the inner wall of the piston cylinder. With such arrangement, the piston cylinder 2 can form an interference fit with the fourth stopper 131 while the first stopper 11 forms a stopper, so that the connection between the piston cylinder 2 and the retaining ring body 13 is more stable. It can be understood that the present application does not limit the number of the fourth stopper 131, as long as it can provide sufficient fastening force.

[0046] Furthermore, the retaining ring body 13 also includes an extension tube 132, which is located on the side of the retaining ring body 13 facing the piston cylinder 2; the outer wall of the extension tube 132 abuts the first limiter 11 and the fourth limiter 131. Such a configuration is equivalent to extending the length of the retaining ring body 13 in the axial direction, increasing the contact area between the retaining ring body 13 and the piston cylinder 2 and the shock absorber body 3, and further improving the assembly stability among the three. In addition, since the extension tube 132 is located on the side of the retaining ring body 13 facing the piston cylinder 2, it can also guide the installation of the piston cylinder 2 on the fourth limiter 131 and the first limiter 11.

[0047] Further, in some embodiments, at least one fifth stopper 1321 is provided on the inner wall of the extension tube 132; the interior of the extension tube 132 is used for the shock absorber body 3 to pass through, and the fifth stopper 1321 is used to abut against the shock absorber body 3. Such a configuration can improve the alignment between the extension tube 132 and the shock absorber body 3. It can be understood that the inner wall of the extension tube 132 can be provided with a plurality of fifth stoppers 1321 arranged along the circumference of the extension tube 132.

[0048] It should be noted that, in one embodiment, the piston retaining ring 1 may include the third limiting member 14 , the fourth limiting member 131 , the fifth limiting member 1321 , and the extension tube 132 at the same time.

[0049] On the basis of the above, the shock absorber assembly provided in the embodiment of the present application includes the piston retaining ring 1 in any of the above embodiments. Since the shock absorber assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0050] In addition, the embodiment of the present application further provides a shock absorber assembly, including a piston cylinder 2 and a shock absorber body 3, the shock absorber body 3 extends into the piston cylinder 2, one of the end of the piston cylinder 2 facing the shock absorber body 3 and the end of the shock absorber body 3 facing the piston cylinder 2 is provided with a first stopper 11, and the other of the end of the piston cylinder 2 facing the shock absorber body 3 and the end of the shock absorber body 3 facing the piston cylinder 2 is provided with a first stopper groove 21, the opening of the first stopper groove 21 is arranged along the axial direction of the piston cylinder 2, and the first stopper 11 extends into the first stopper groove 21. That is, in this embodiment, the piston cylinder 2 and the shock absorber body 3 in the shock absorber assembly can be directly assembled without being connected through the piston retaining ring 1 in the aforementioned embodiment. It can be understood that the first stopper 11 can be arranged at the end of the piston cylinder 2 facing the shock absorber body 3, and can also be arranged at the end of the shock absorber body 3 facing the piston cylinder 2, and this embodiment does not limit this. Correspondingly, when the first limiter 11 is arranged at one end of the piston cylinder 2 facing the shock absorber body 3, the first limiter groove 21 is arranged at one end of the shock absorber body 3 facing the piston cylinder 2; conversely, when the first limiter 11 is arranged at one end of the shock absorber body 3 facing the piston cylinder 2, the first limiter groove 21 is arranged at one end of the piston cylinder 2 facing the shock absorber body 3. In other words, a corresponding relationship can be formed between the first limiter 11 and the first limiter groove 21. Furthermore, in combination with the opening direction of the first limiter groove 21 being arranged along the axial direction of the piston cylinder 2, the first limiter 11 can smoothly extend into the first limiter groove 21, thereby limiting the circumferential relative movement between the piston cylinder 2 and the shock absorber body 3.

[0051] The vehicle provided in the embodiment of the present application includes the shock absorber assembly in any of the aforementioned embodiments, and therefore also has at least all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, which will not be described one by one here.

[0052] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A piston retaining ring (1), characterized in that: include: Retaining ring body (13); A first limiting member (11) is arranged on one side of the retaining ring body (13) and faces the piston cylinder (2), and is used for being connected with the piston cylinder (2) to limit its circumferential movement; The second limiting member (12) is arranged on the other side of the retaining ring body (13) and faces the shock absorber body (3), and is used for being connected with the shock absorber body (3) to limit its circumferential movement.

2. The piston retaining ring (1) according to claim 1, characterized in that: It also comprises a third limiting member (14) arranged on the outer edge of the retaining ring body (13), and the third limiting member (14) is used to abut against the outer peripheral wall of the piston cylinder (2).

3. The piston retaining ring (1) according to claim 2, characterized in that: The third limiting member (14) is connected to the first limiting member (11), and the third limiting member (14) extends out of the first limiting member (11) in the circumferential direction of the retaining ring body (13); and / or the third limiting member (14) extends out of the first limiting member (11) in the axial direction of the retaining ring body (13).

4. The piston retaining ring (1) according to claim 3, characterized in that: The retaining ring body (13) also includes an extension tube (132), which is located on the side of the retaining ring body (13) facing the piston tube (2) and extends axially, the interior of the extension tube (132) is used for the shock absorber body (3) to pass through, the inner wall of the extension tube (132) is used to abut the shock absorber body (3), and the outer wall of the extension tube (132) is used to abut the inner wall of the piston tube (2).

5. The piston retaining ring (1) according to claim 4, characterized in that: The retaining ring body (13) further comprises at least one fourth position-limiting member (131), which is arranged on the outer wall of the extension tube (132) and is used for abutting against the inner wall of the piston tube (2).

6. The piston retaining ring (1) according to claim 4, characterized in that: The inner wall of the extension tube (132) is provided with at least one fifth position-limiting member (1321); the fifth position-limiting member (1321) is used to abut against the outer wall of the shock absorber body (3).

7. A shock absorber assembly, characterized in that: include: A piston cylinder (2), wherein one end of the piston cylinder (2) is provided with a first limiting groove (21), and an opening of the first limiting groove (21) is arranged along the axial direction of the piston cylinder (2); A shock absorber body (3), wherein the outer side wall of the shock absorber body (3) is provided with a second limiting groove (31), and the opening of the second limiting groove (31) is arranged along the axial direction of the piston cylinder (2); The piston retaining ring (1) according to any one of claims 1 to 6, wherein the piston retaining ring (1) is used to connect the piston cylinder (2) and the shock absorber body (3), the first limiting member (11) extends into the first limiting groove (21), and the second limiting member (12) extends into the second limiting groove (31).

8. The shock absorber assembly according to claim 7, characterized in that: The shock absorber body (3) further comprises an abutment member (32), the abutment member (32) being connected to an outer side wall of the shock absorber body (3), and the second limiting groove (31) being arranged on the abutment member (32); and / or, The first limiting member (11) abuts against the inner wall of the first limiting groove (21) on both sides along the circumference of the retaining ring body (13), and / or the second limiting member (12) abuts against the inner wall of the second limiting groove (31) on both sides along the circumference of the retaining ring body (13).

9. A shock absorber assembly, characterized in that: The invention comprises a piston cylinder (2) and a shock absorber body (3), wherein the shock absorber body (3) extends into the piston cylinder (2), and a first limiting member (11) is provided at one of the ends of the piston cylinder (2) facing the shock absorber body (3) and the ends of the shock absorber body (3) facing the piston cylinder (2), and a first limiting groove (21) is provided at the other of the ends of the piston cylinder (2) facing the shock absorber body (3) and the ends of the shock absorber body (3) facing the piston cylinder (2), wherein the opening of the first limiting groove (21) is arranged along the axial direction of the piston cylinder (2), and the first limiting member (11) extends into the first limiting groove (21).

10. A vehicle, characterized in that: Comprising a shock absorber assembly as described in any one of claims 7 to 9.

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