Shock absorber and vehicle

Abstract

The utility model discloses a shock absorber and a vehicle, the shock absorber comprises a body, the body is provided with an actuating cavity and a push rod, and the push rod is movably arranged in the actuating cavity; the elastic piece is arranged on the push rod in a sleeving mode and located in the actuating cavity; and the guide assembly is arranged at at least one end of the elastic piece and arranged on the push rod in a sleeving mode so as to provide guidance when the elastic piece is compressed or stretched. The elastic piece is arranged outside the push rod in a sleeving mode to buffer and reduce vibration, and the guide assemblies are arranged at the two ends of the elastic piece to guide the telescopic direction generated in the buffering process of the elastic piece, so that the stability of the internal structure of the shock absorber is improved; and the guide assembly can guide the telescopic direction of the elastic piece, so that the vibration reduction direction of the elastic piece is consistent with the vibration direction, and the vibration reduction effect is further improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle chassis, and particularly to a shock absorber and a vehicle. Background Art

[0002] In related technologies, shock absorbers are commonly used in the suspension systems of vehicle chassis. In a conventional shock absorber, an elastic member is disposed inside the working chamber. The elastic member is usually a shock-absorbing spring, an air spring, etc., so as to improve the lateral support of the vehicle through the elastic member. However, during the movement of the elastic member inside the working chamber of the shock absorber, there is a lack of guidance or limitation, resulting in its possible unstable movement inside the working chamber, thereby affecting the service life, shock-absorbing effect of the shock absorber, or causing a series of negative effects such as an increase in the noise generated by the shock absorber. Summary of the Utility Model

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the present application is to provide a shock absorber in which the shock-absorbing structure inside the shock absorber has good stability.

[0004] Another object of the present application is to provide a vehicle.

[0005] A shock absorber according to an embodiment of the present application includes: a body having a working chamber and a push rod, the push rod being movably disposed in the working chamber; an elastic member sleeved on the push rod and located inside the working chamber; and a guiding assembly disposed at at least one end of the elastic member and sleeved on the push rod to provide guidance when the elastic member is compressed or extended.

[0006] In the shock absorber according to the present application, an elastic member is sleeved on the push rod to buffer and absorb shock, and guiding assemblies are disposed at both ends of the elastic member to guide the telescopic direction generated by the elastic member during the buffering process, thereby improving the stability of the internal structure of the shock absorber. Moreover, the guiding assemblies can guide the telescopic direction of the elastic member to enable the shock-absorbing direction of the elastic member to be consistent with the vibration direction to further improve the shock-absorbing effect.

[0007] According to some embodiments of the present application, the guiding assembly includes a first pad and a second pad respectively located at both ends of the elastic member, the first pad or the second pad being fixed to the push rod; at least one of the first pad and the second pad is in sliding fit with the inner wall surface of the working chamber.

[0008] Further, the first pad includes a first connection section, a first limiting section, and a first through hole penetrating the first connection section and the first limiting section; the first connection section extends into the elastic member, the first limiting section is located at one end of the first connection section away from the elastic member, and axially abuts against the elastic member along the shock absorber.

[0009] Further, the first pad further includes: a first limiting convex portion formed on the side of the first connecting section facing the elastic member and adapted to be fitted to the end of the elastic member.

[0010] In some embodiments, the second pad includes a first sub-pad, and the first sub-pad includes: a second connecting section, a second limiting section, and a second through hole penetrating the second connecting section and the second limiting section; the second connecting section extends into the elastic member, the second limiting section is located at one end of the second connecting section away from the elastic member, and axially abuts against the elastic member along the shock absorber.

[0011] Further, the first sub-pad further includes: a second limiting convex portion formed on the side of the second connecting section facing the elastic member and adapted to be fitted to the end of the elastic member.

[0012] Further, the second pad further includes: a second sub-pad located on the side of the first sub-pad away from the elastic member, one or more flow channels are provided on the outer periphery of the second sub-pad, and the second sub-pad is configured to be elastically deformed under pressure.

[0013] Further, the second pad further includes: a third sub-pad located on the side of the second sub-pad away from the elastic member, and the first sub-pad and the third sub-pad sandwich the second sub-pad, and the third sub-pad is connected to the push rod.

[0014] According to some embodiments of the present application, the elastic member is a spring; the cross-sectional profile of the spring is rectangular, and an elastic coating layer is provided on the outside.

[0015] A vehicle according to an embodiment of the present application includes: the shock absorber described in the above embodiment.

[0016] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a cross-sectional view of a shock absorber according to an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of an elastic member and a guiding assembly of a shock absorber according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of the structure of the first pad of a shock absorber according to an embodiment of the present application;

[0021] Figure 4 is a cross-sectional view of the second pad of a shock absorber according to an embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of the second sub-pad structure of a shock absorber section according to an embodiment of the present application.

[0023] Reference numerals:

[0024] 100 - Body;

[0025] 110 - First cylinder, 120 - Second cylinder, 130 - Sealing gasket, 140 - Dust cover, 150 - Actuating chamber, 160 - Push rod;

[0026] 200 - Guide assembly;

[0027] 210 - First pad, 211 - First connecting section, 212 - First limiting section, 213 - First through hole, 214 - First limiting convex part, 220 - Second pad, 221 - First sub-pad, 2211 - Second connecting section, 2212 - Second limiting section, 2213 - Second through hole, 2214 - Second limiting convex part, 222 - Second sub-pad, 2231 - Flow-through groove, 223 - Third sub-pad;

[0028] 300 - Elastic member;

[0029] 400 - Lock ring. Detailed implementation manners

[0030] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0031] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0032] In the description of the embodiments of the present application, the "first feature" and "second feature" may include one or more of such features.

[0033] In the description of the embodiments of the present application, the meaning of "a plurality" is two or more.

[0034] In the description of the embodiments of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0035] In the description of the embodiments of the present application, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0036] In the description of the embodiments of the present application, "understanding with reference to the exemplary structure shown in FIG. N" or "referring to FIG. N", etc. means that the corresponding drawings can be referred to rather than being limited to the specific structure corresponding to the drawings, so as to better understand some embodiments that may cover the specific example in combination with the specific example, rather than limiting all embodiments of the present application to the scope defined by the specific example.

[0037] Next, refer to Figures 1 - 5 Describe a shock absorber and a vehicle according to an embodiment of the present application.

[0038] A shock absorber according to an embodiment of the present application includes: a body 100, the body 100 having an actuating chamber 150 and a push rod 160, the push rod 160 being movably disposed in the actuating chamber 150. The push rod 160 is at least partially disposed in the actuating chamber 150, and the region where the actuating chamber 150 is connected to the push rod 160 restricts the degree of freedom of the push rod 160, and the push rod 160 moves in the actuating chamber 150 along its degree-of-freedom direction. It can be understood that in some scenarios, the push rod 160 is connected to a device or component that generates vibrations, while the actuating chamber 150 remains relatively stable.

[0039] Exemplarily, reference can be made to Figure 1 the exemplary structure shown, and the body 100 may include a first cylinder 110 and a second cylinder 120, or a first cylinder 110 and a gasket 130. The actuating chamber 150 is formed inside the first cylinder 110, the second cylinder 120 is sleeved outside the first cylinder 110, or the actuating chamber 150 is defined between the first cylinder 110 and the gasket 130. The push rod 160 passes through the first cylinder 110 or the gasket 130 and extends into the actuating chamber 150, and the portion of the push rod 160 extending outside the actuating chamber 150 is connected to the vehicle, and the shock absorber functions as a shock-absorbing part of the suspension.

[0040] The shock absorber further includes an elastic member 300 and a guiding assembly 200. The elastic member 300 is sleeved on the push rod 160 and is located in the actuating cavity 150. The guiding assembly 200 is disposed at at least one end of the elastic member 300 and is sleeved on the push rod 160 to provide guidance when the elastic member 300 is compressed or extended. The elastic member 300 is disposed in the actuating cavity 150, while the push rod 160 can extend outside the actuating cavity 150. In some scenarios, when the push rod 160 is externally connected to the equipment to be shock-absorbed, the push rod 160 can be forced to move in the actuating cavity 150 and drive the elastic member 300 to expand and contract in the actuating cavity 150, thereby reducing vibration.

[0041] For better understanding, reference can be made to Figure 1 , and the case where both ends of the push rod 160 extend outside the actuating cavity 150 and guiding assemblies 200 are provided at both ends of the elastic member 300 will be described. The elastic member 300 is disposed in the actuating cavity 150, so the portion of the push rod 160 in the actuating cavity 150 is sleeved with the elastic member 300. When the guiding assembly 200 is fixed to the push rod 160, the movement of the push rod 160 will drive the elastic member 300 to move in the actuating cavity 150. The elastic member 300 is restricted within the space of the actuating cavity 150 and is thus squeezed in a first direction during movement to generate elastic deformation to buffer vibration. The aforementioned first direction is the direction of the vibration received by the push rod 160. Specifically, the first direction can be along the axial direction of the push rod 160 or the circumferential direction of the push rod 160, etc., and it should not be limited to a specific direction. The guiding assembly 200 guides the elastic member 300 to move within a preset range, thereby improving the stability of the shock absorber.

[0042] Exemplarily, the push rod 160 passes through the first cylinder 110 or the gasket 130 and extends into the actuating cavity 150. The push rod 160 externally connects to the component or equipment to be shock-absorbed. After the push rod 160 is forced to vibrate, it drives the elastic member 300 to move along the actuating cavity 150 in the actuating cavity 150. When the guiding assembly 200 connected to one end of the elastic member 300 abuts against the edge of the actuating cavity 150, the push rod 160 drives the elastic member 300 to continue moving and squeeze and contract. The elastic member 300 is squeezed to offset the vibration generated in the first direction. The principle of the stretching process is roughly the same and will not be elaborated here. It is worth mentioning that different elastic members 300 can also eliminate vibrations other than those in the first direction in different examples. For example, the elastic member 300 in the form of an airbag, specifically, an air spring.

[0043] For the shock absorber according to an embodiment of the present application, an elastic member 300 is sleeved outside the push rod 160 to buffer and damp vibration, and guiding assemblies 200 are arranged at both ends of the elastic member 300 to guide the telescopic direction generated by the elastic member 300 during the buffering process, thereby improving the stability of the internal structure of the shock absorber, and the guiding assemblies 200 can guide the telescopic direction of the elastic member 300 so that the damping direction of the elastic member 300 is consistent with the vibration direction to further improve the damping effect.

[0044] In a further example, it can be understood in combination with Figure 2 the exemplary structure shown. The guiding assembly 200 includes a first pad 210 and a second pad 220 located at both ends of the elastic member 300. The first pad 210 or the second pad 220 is fixed to the push rod 160, and at least one of the first pad 210 and the second pad 220 is slidably engaged with the inner wall surface of the actuating cavity 150.

[0045] Specifically, the elastic member 300 is fixed to the guiding assembly 200, or only in some states during the movement of the elastic member 300, the elastic member 300 cooperates with the guiding assembly 200. For example, when the elastic member 300 moves in the actuating cavity 150 and abuts against the first pad 210 or the second pad 200 in the guiding assembly 200, it cooperates therewith. If one of the first pad 210 and the second pad 220 is fixed to the push rod 160, then the push rod 160 is actually fixedly connected to the elastic member 300 through the first pad 210 or the second pad 220, so that when the push rod 160 moves, it drives the elastic member 300 to move in the actuating cavity 150. After at least one of the first pad 210 and the second pad 220 is slidably engaged with the inner wall surface of the actuating cavity 150, the first pad 210 or the second pad 220 is restricted by the wall surface of the actuating cavity 150 and will slide along the wall surface direction of the actuating cavity 150, thereby exerting a guiding effect on the elastic member 300.

[0046] Exemplarily, the first pad 210 is fixed to the push rod 160, and the push rod 160 is movably passed through the central portion of the first pad 210; the push rod 160 is fixed to the second pad 220, and the elastic member 300 is driven to move in the actuating cavity 150 through the second pad 220. When the elastic member 300 moves to abut against the first pad 210 and forces the first pad 210 to move to the edge of the actuating cavity 150, the first pad 210 will abut against the edge of the actuating cavity 150 and prevent the elastic member 300 from continuing to move, forcing the elastic member 300 to generate elastic deformation to damp vibration. In the example, both the first pad 210 and the second pad 220 are slidably engaged with the inner wall surface of the actuating cavity 150. Specifically, it can be that the outer contour of the first pad 210 and the second pad 220 fits to the inner wall of the actuating cavity 150, or the outer contour of one of the second pad 220 and the second pad 220 fits to the inner wall of the actuating cavity 150. It can be understood that the first pad 210 and the second pad 220 guide the damping direction of the elastic member 300 to improve the stability of the shock absorber.

[0047] In other examples, when the first pad 210 is fixed to the push rod 160, the second pad 220 is movably disposed within the push rod 160. Those skilled in the art of the working process and principle can obtain it after reading the above examples, so it will not be elaborated here.

[0048] Exemplarily, for reference Figure 1 To assist in understanding, the actuating cavity 150 is a tubular structure, and both ends of the actuating cavity 150 are closed. Thus, in this example, the first pad 210 can contact the closed end of the actuating cavity 150, and the second pad 220 can contact the other closed end of the actuating cavity 150. When the elastic member 300 moves along the inner wall of the actuating cavity 150 within the actuating cavity 150, the first pad 210 and the second pad 220 respectively contact the corresponding closed ends and then compress the spring to produce a vibration damping effect.

[0049] It can be understood that the shock absorber can be disposed between the wheel and the vehicle body, as a structural member for transmitting road excitation to the vehicle body and buffering or reducing road excitation. When the shock absorber bears road excitation, the elastic member 300 can undergo elastic deformation to suppress the vehicle body from bouncing, and can improve the lateral support of the vehicle and reduce the limit noise when the shock absorber rebounds or stretches during the vehicle's downward jump. The first pad 210 and the second pad 220 slide along the inner wall of the actuating cavity 150, providing an installation position for the elastic member 300 and guiding the compression and restoration of the elastic member 300.

[0050] In a further example, reference can be made to Figure 3 Understand that the first pad 210 includes a first connection section 211, a first limiting section 212, and a first through hole 213 that penetrates the first connection section 211 and the first limiting section 212; the first connection section 211 extends into the elastic member 300, the first limiting section 212 is disposed at one end of the first connection section 211 away from the elastic member 300, and the first connection section 211 axially abuts against the elastic member 300 along the shock absorber.

[0051] Exemplarily, the first through hole 213 penetrates the push rod 160. After the first connection section 211 extends into the elastic member 300, it abuts against the elastic member 300. Specifically, a clearance fit can be formed between the first connection section 211 and the inner peripheral wall of the elastic member 300, and the elastic member 300 can be compressed under the action of the push rod 160. During the process of the elastic member 300 being gradually compressed, the first connection section 211 can gradually extend into the end of the elastic member 300. When the elastic member 300 is in a released state, the first connection section 211 can be separated from the elastic member 300. Of course, the first connection section 211 and the elastic member 300 can be in a fixed connection relationship. For example, in some other examples, the first connection section 211 and the elastic member 300 can also be directly fixed by an interference fit with the inner peripheral wall.

[0052] Exemplarily, the first limiting section 212 is a ring structure. A first connecting section 211 extends from the plane of the first limiting section 212 on the side close to the elastic member 300. The first connecting section 211 is also a ring body, and the outer diameter of the first connecting section 211 is smaller than the outer diameter of the first limiting section 212.

[0053] In a further example, with continued reference to Figure 3 as shown, the first pad 210 further includes: a first limiting convex portion 214, which is formed on the outer wall of the first connecting section 211 and is adapted to axially push against the elastic member 300 along the shock absorber. The first limiting convex portion 214 can be adapted to the end of the elastic member 300, so as to cooperate and be fixed with the end of the elastic member 300. In different examples, the first limiting convex portion 214 can also be directly fixedly connected to the end of the elastic member 300.

[0054] Exemplarily, when the elastic member 300 is a spring, the first limiting convex portion 214 is formed as a spiral frustum, and the spiral frustum cooperates with the spiral structure at the end of the spring. In one example, the spiral structure at the end of the spring is directly fixed to the first limiting convex portion 214. In another example, the first limiting convex portion 214 is used to abut against the spiral structure at the end of the spring. For another example, a part of the spring is sleeved on the first connecting section 211, and the wall surface of the first connecting section 211 along the circumference of the shock absorber is fixedly fitted with the inner wall of the spring. Specifically, the first connecting section 211 and the inner wall of the spring are fixedly fitted by interference fit.

[0055] In a further example, reference can be made to Figure 4 to understand that the second pad 220 includes a first sub-pad 221, and the first sub-pad 221 includes: a second connecting section 2211, a second limiting section 2212, and a second through hole 2213 that penetrates the second connecting section 2211 and the second limiting section 2212; the second connecting section 2211 extends into the elastic member 300, the second limiting section 2212 is located at one end of the second connecting section 2211 away from the elastic member 300, and axially pushes against the elastic member 300 along the shock absorber. Similar to the first pad 210, the first sub-pad 221 also includes a second limiting convex portion 2214.

[0056] In one example, the first sub-pad 221 and the first pad 210 are oppositely arranged at both ends of the elastic member 300. In a further example, the first sub-pad 221 further includes: a second limiting convex portion 2214, which is formed on the outer wall of the second connecting section 2211 and is adapted to axially push against the elastic member 300 along the shock absorber. The structure of the first sub-pad 221 in this example is basically the same as that of the first pad 210, and will not be elaborated here.

[0057] In a further example, reference can be made to Figure 5For better understanding with the specific examples shown, the second cushion 220 further includes: a second sub-cushion 222. The second sub-cushion 222 is located on the side of the first sub-cushion 221 away from the elastic member 300. When the elastic member 300 is driven to contact the edge of the actuating cavity 150, the second sub-cushion 222 spaces the first sub-cushion 221 apart from the wall surface of the actuating cavity 150, and the second sub-cushion 222 functions as a buffer. One or more flow channels 2231 are provided on the outer periphery of the second sub-cushion 222, and the second sub-cushion 222 is configured to be elastically deformed under pressure, and a clearance space is left between the wall of the flow channel 2231 and the inner wall of the actuating cavity 150.

[0058] Exemplarily, when the second sub-cushion 222 is in an uncompressed state, there is a clearance between the outer wall of the second sub-cushion 222 and the inner wall of the actuating cavity 150. When the second sub-cushion 222 is elastically deformed under pressure, the outer wall of the second sub-cushion 222 fits against the inner wall of the actuating cavity 150. In this example, the elastic member 300 moves along the axis direction of the actuating cavity 150. The second sub-cushion 222 is subjected to a pressure in the direction of the push of the elastic member 300, and is also squeezed between the first sub-cushion 221 above and the contact plane below. The second sub-cushion 222 will expand and deform in a direction perpendicular to the axis of the actuating cavity 150 and then fit against the inner wall of the actuating cavity 150.

[0059] In some scenarios, the first actuating cavity 150 is filled with damping fluid, and an oil passage communicating with the actuating cavity 150 is further provided around the actuating cavity 150. The second sub-cushion 222 contacts the outer wall of the actuating cavity 150, but the damping fluid can pass through the flow channels 2231, and then the damping fluid flows through the flow channels 2231 into the oil passage. For example, when the second sub-cushion 222 is not expanded, the clearance between the second sub-cushion 222 and the inner wall of the actuating cavity 150 allows the damping fluid to flow through; when the second sub-cushion 222 is elastically deformed under pressure to expand in a direction perpendicular to the axis of the actuating cavity 150, only the flow channels 2231 can allow the damping fluid to flow into the oil passage, so as to increase the damping force when the shock absorber is stretched after the second sub-cushion 222 is elastically deformed under pressure. Exemplarily, the second sub-cushion 222 is made of a rubber or polyurethane material with a lower hardness.

[0060] It can be understood that by the deformation or non-deformation of the second sub-cushion 222 in different states, the resistance to the flow of the damping fluid in the actuating cavity 150 is changed. When the elastic member 300 is squeezed, the pressure exerted on the second sub-cushion 222 will gradually increase, and the second sub-cushion 222 will gradually expand to contact the inner wall of the actuating cavity 150. Then, when the elastic member 300 rebounds and when the elastic member 300 is squeezed, the second sub-cushion 222 will increase the damping force of the movement of the elastic member 300 in the shock absorber and improve the shock absorption effect.

[0061] In a further example, the second pad 220 further includes: a third sub-pad 223, the third sub-pad 223 is located on the side of the second sub-pad 222 away from the elastic member 300, and the first sub-pad 221 and the third sub-pad 223 sandwich the second sub-pad 222, and the third sub-pad 223 is connected to the push rod 160.

[0062] In a specific example, as Figures 1 - 2 shown, the elastic member 300 is a spring, the cross-sectional profile of the spring is rectangular, and an elastic coating layer is provided on the outer periphery. Specifically, the elastic coating layer is rubber or nylon. Wrapping the elastic coating layer outside the spring can increase the contact area of the coil to increase the service life and reduce the contact noise.

[0063] In the example, the upper and lower ends of the spring are respectively connected to the first pad 210 and the second pad 220, and the body 100 includes a dust cover 140, a second cylinder 120, and a first cylinder 110 arranged in sequence from outside to inside. Among them, an actuating cavity 150 is formed inside the first cylinder 110, a sealing pad 130 is provided above the first cylinder 110, a part of the sealing pad 130 extends outside the first cylinder 110 and is fixedly connected to the second cylinder 120, and the dust cover 140 is fixedly arranged above the second sleeve. The push rod 160 is sequentially inserted through the dust cover 140, the sealing pad 130, and the first cylinder 110, and the push rod 160 is also sleeved with a spring, a first pad 210, and a second pad 220. In this example, taking the clearance fit between the first pad 210 and the push rod 160 as an example, the first pad 210 and the push rod 160 can move relative to each other so that the first pad 210 can slide on the push rod 160, and a part of the second pad 220 is fixedly connected to the push rod 160.

[0064] Specifically, further combining Figures 3 - 5 shown to understand this example, the first sub-pad 221 in the second pad 220 is fixedly connected to the end of the spring, and the second sub-pad 222 and the third sub-pad 223 are sequentially arranged below the first sub-pad 221.

[0065] Continuing to combine Figure 1 shown in the structure, the third sub-pad 223 is directly connected to the push rod 160, or a connecting member 400 (such as: configured as a hoop) is further provided on the axial side of the third sub-pad 223 away from the second sub-pad 222, the connecting member 400 is connected to or integrally formed with the push rod 160, and the connecting member 400 is connected to the third sub-pad 223.

[0066] In other words, the planar side of the connecting member 400 is fixedly connected to the third sub-pad 223. The connecting member 400 and the third sub-pad 223 can be fixedly connected by adhesion. When the connecting member 400 is a hoop, the ring body of the hoop is fixedly connected to the push rod 160, so that the third sub-pad 223 and the push rod 160 are relatively fixed. It can be understood that the third pad is fixed to the push rod 160, so that the push rod 160 can drive the elastic member 300 to move in the actuation cavity 150.

[0067] As Figure 3 shown, the first sub-pad 221 includes a second connecting section 2211 and a second limiting section 2212. In this example, the second limiting section 2212 is a ring body, and the second connecting section 2211 extends from the ring opening of the second limiting section 2212. The second connecting section 2211 is also a ring body. A second limiting protrusion 2214 extends on the plane of the side where the second limiting section 2212 extends out of the second connecting section 2211. In this example, an interference fit is achieved between the second connecting section 2211 and the inner ring of the spring to realize clamping. The second limiting protrusion 2214 matches the end of the spring and limits the rotation direction of the spring end, so as to cooperate with the movement of the spring. The first pad 210 in this example has the same structure as the first sub-pad 221 and will not be elaborated here.

[0068] As Figure 4 shown, a second sub-pad 222 is sandwiched between the first sub-pad 221 and the third sub-pad 223, and the outer diameter of the second sub-pad 222 is greater than the outer diameters of the first sub-pad 221 and the second sub-pad 222. Specifically, the second sub-pad 222 can be fixedly integrated with the first sub-pad 221 and the third sub-pad 223 using glue or other adhesives. The first sub-pad 221 is made of high-hardness nylon / rubber, the third sub-pad 223 is made of high-hardness nylon / rubber, and its structure is a flat pad; the second sub-pad 222 is composed of a rubber or polyurethane material with a lower hardness.

[0069] As Figure 5 shown, three flow channels 2231 are evenly spaced on the outer side wall of the third sub-pad 223, and the groove body of the flow channel 2231 is an arc-shaped groove body. When either the first sub-pad 221 or the third sub-pad 223 is squeezed or both are squeezed simultaneously, the second sub-pad 222 expands outward and fits against the inner wall of the actuation cavity 150. The greater the pressure it receives, the greater the degree of expansion, making the gap between the flow channel 2231 and the actuation cavity 150 smaller. The smaller the gap, the greater the resistance to the damping fluid flowing through.

[0070] In this example, the damping fluid is a hydraulic fluid.

[0071] According to the vehicle of the embodiment of the present application, a shock absorber described in the foregoing example is provided. Specifically, the shock absorber is provided as a component of the suspension in the vehicle chassis.

[0072] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0073] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that: include: A body (100), the body (100) having an actuating chamber (150) and a push rod (160), the push rod (160) being movably disposed in the actuating chamber (150); An elastic member (300), the elastic member (300) being sleeved on the push rod (160) and located in the actuating chamber (150); a guide assembly (200), the guide assembly (200) being arranged at at least one end of the elastic member (300) and sleeved on the push rod (160) to provide guidance when the elastic member (300) is compressed or stretched; The guide assembly (200) comprises a first pad (210) and a second pad (220) respectively located at two ends of the elastic member, the first pad (210) comprising a first connecting section (211), a first limiting section (212), and a first through hole (213) passing through the first connecting section (211) and the first limiting section (212); the first connecting section (211) extends into the elastic member (300), the first limiting section (212) is located at an end of the first connecting section (211) away from the elastic member, and is pushed against the elastic member (300) along the axial direction of the shock absorber; The first pad (210) further comprises: a first limiting protrusion (214), the first limiting protrusion (214) being formed on a side of the first connecting section (211) facing the elastic member (300) and being suitable for fitting to an end portion of the elastic member (300).

2. The shock absorber according to claim 1, characterized in that The first pad (210) or the second pad (220) is fixed to the push rod (160); At least one of the first pad (210) and the second pad (220) is slidably matched with the inner wall surface of the actuating chamber (150).

3. The shock absorber according to claim 1, characterized in that: The second pad (220) comprises a first sub-pad (221), the first sub-pad (221) comprising: a second connecting section (2211), a second limiting section (2212), and a second through hole (2213) passing through the second connecting section (2211) and the second limiting section (2212); the second connecting section (2211) extends into the elastic member (300), the second limiting section (2212) is located at an end of the second connecting section (2211) away from the elastic member (300), and is pushed against the elastic member along the axial direction of the shock absorber.

4. The shock absorber according to claim 3, characterized in that The first sub-pad (221) further comprises: a second limiting protrusion (2214), the second limiting protrusion (2214) being formed on a side of the second connecting section (2211) facing the elastic member (300) and being suitable for fitting to an end of the elastic member (300).

5. The shock absorber according to claim 3, characterized in that: The second pad (220) further comprises: a second sub-pad (222), the second sub-pad (222) being located on a side of the first sub-pad (221) away from the elastic member (300), one or more flow grooves (2231) being provided on the periphery of the second sub-pad (222), and the second sub-pad (222) being configured to be suitable for elastic deformation under pressure.

6. The shock absorber according to claim 5, characterized in that The second pad (220) further comprises: a third sub-pad (223), the third sub-pad (223) being located on a side of the second sub-pad (222) away from the elastic member (300), and the first sub-pad (221) and the third sub-pad (223) sandwiching the second sub-pad (222), and the third sub-pad (223) being connected to the push rod (160).

7. The vibration absorber according to claim 1, characterized in that: The elastic member (300) is a spring, the cross-sectional profile of the spring is rectangular, and an elastic coating layer is arranged on the outer periphery.

8. A vehicle, characterized in that: include: A vibration damper as claimed in any one of claims 1 to 7.

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