Shock absorber assembly and vehicle equipped with same

Abstract

The shock absorber assembly (2) includes a cylinder (201), a piston (202), and a piston rod (203), the base of the cylinder (201) is configured to connect the piston (202) to an axle or a wheel, the piston (202) is located within the cylinder (201) and defines an upper chamber (2011) and a lower chamber (2012) together with the cylinder (201), the piston rod (203) is provided on the piston (202) and configured to be connected to a vehicle body, an oil passage (204) is provided within the piston rod (203), an oil passage hole is provided at an upper end of the oil passage (204) and configured to communicate with the outside, the oil passage (204) communicates with the lower chamber (2012), and the oil in the lower chamber (2012) communicates with the outside via the oil passage (204), thereby making it possible to adjust the position of the piston rod and the height of the vehicle body and improve the operating stability of the vehicle. The present invention further relates to a vehicle.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application is based on and claims priority from a Chinese patent application bearing application number 202123448219.2, filed with the State Intellectual Property Office of the People's Republic of China on December 30, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of vehicles, and more particularly to shock absorber assemblies and vehicles equipped therewith. [Background technology]

[0003] A suspension is a device that transmits the interaction force between the body and the axle. It is one of the four main components of a vehicle and plays an important role in affecting the vehicle's driving performance. The suspension transmits the force and torque fed back from the road surface, damping wheel vibrations and mitigating impacts, improving the driver's driving experience and enabling the vehicle to achieve ideal dynamic characteristics and stable driving performance. Most suspensions in related technology are composed of springs, guide mechanisms, shock absorbers, etc., and the damping coefficient of the shock absorber and the stiffness of the spring are both constant, making it difficult to achieve both comfort and driving stability. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application seeks to solve at least to some extent one of the technical problems in the related art.

[0005] Therefore, one object of the present application is to provide a shock absorber assembly that can adjust the position of the piston rod and the height of the vehicle body to improve the handling stability of the vehicle. [Means for solving the problem]

[0006] The present application further provides a vehicle having the above shock absorber assembly.

[0007] A shock absorber assembly according to an embodiment of the present application includes a cylinder, a piston, and a piston rod, the base of the cylinder being configured to be connected to an axle or a wheel, the piston being located within the cylinder and defining an upper chamber and a lower chamber together with the cylinder, the piston rod being attached to the piston and configured to be connected to a vehicle body, an oil passage being provided within the piston rod, an oil passage hole being provided at an upper end of the oil passage and configured to communicate with the outside, the oil passage being connected to the lower chamber, and the lower chamber being connected to the piston rod. Ba The oil passage communicates with the outside.

[0008] The shock absorber assembly according to the present invention can reduce weight and costs by providing an oil passage in the piston rod. Furthermore, the oil passage communicates with the lower chamber, allowing oil to flow in and out of the lower chamber. This allows the position of the piston rod and the height of the vehicle body to be adjusted, improving vehicle handling stability without compromising vehicle comfort, and effectively resolving the trade-off between vehicle comfort and handling stability. Furthermore, the stable connection of the oil flow path can prevent wear and tear at the connection points due to vibration, minimizing oil leakage at the connection points.

[0009] In some embodiments of the present application, a first connection port is further formed in the side wall of the cylinder, the first connection port being located near the upper end of the cylinder and communicating with the upper chamber.

[0010] In some embodiments of the present application, a second connection port is further formed in the side wall of the cylinder, the second connection port being located near the bottom end of the cylinder and communicating with the lower chamber.

[0011] In some embodiments of the present application, the shock absorber assembly further includes a buffer body, wherein an upper end of the piston rod extends from the cylinder, the buffer body is fitted onto the piston rod and configured to connect to a vehicle body, and the upper end of the piston rod extends from the buffer body and is configured to be spaced apart from the vehicle body.

[0012] In some embodiments of the present application, the shock absorber assembly further includes a cover, and the buffer is configured to connect to a vehicle body via the cover.

[0013] Preferably, the cover is a wheel cover.

[0014] In some embodiments of the present application, the shock absorber assembly further includes a coupling, the coupling communicating with an upper end of the oil passage and communicating with the outside.

[0015] Preferably, a cavity is formed within the joint, and a third connection port and a fourth connection port are formed in the joint, the third connection port and the fourth connection port are both connected to the cavity, the extension direction of the third connection port is set perpendicular to the extension direction of the fourth connection port, the third connection port is connected to the upper end of the oil passage, and the fourth connection port is configured to be connected to the outside.

[0016] In some embodiments of the present application, the shock absorber assembly further includes a spring, the spring abutting between the buffer and the cylinder.

[0017] In some embodiments of the present application, the cylinder is provided with a support member, and the spring abuts between the buffer body and the support member.

[0018] A vehicle according to an embodiment of the present application includes a shock absorber assembly according to any one of the above embodiments of the present application.

[0019] In the vehicle according to the embodiment of the present application, the height of the vehicle body can be adjusted, improving the vehicle's operational stability without compromising vehicle comfort, thereby effectively resolving the trade-off between vehicle comfort and operational stability. Furthermore, the use of a hollow piston rod not only reduces weight, but also allows the position of the piston rod to be adjusted by utilizing the oil passage limited by the hollow piston rod to allow oil to flow in or out, resulting in a simple adjustment method, high reliability, low cost, and fast response. Furthermore, the connection of the oil passage can be stabilized, preventing wear at the connection points due to vibration and minimizing oil leakage at the connection points.

[0020] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of a shock absorber assembly according to an embodiment of the present application. [Figure 2] FIG. 2 is a cross-sectional view of the shock absorber assembly shown in FIG. 1. [Figure 3] FIG. 1 is a schematic diagram of a shock absorber assembly according to some embodiments of the present application. [Figure 4] FIG. 2 is a schematic diagram of a shock absorber assembly according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, the embodiments of the present application will be described in detail, and examples of the embodiments are shown in the drawings, and the same or similar reference numerals throughout indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are merely illustrative and are intended to interpret the present application, but should not be understood as limiting the present application.

[0023] A shock absorber assembly 2 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4. The shock absorber assembly 2 is used in a vehicle and connects the axle of the vehicle to the vehicle body.

[0024] A shock absorber assembly 2 according to an embodiment of the present application includes a cylinder 201, a piston 202, and a piston rod 203, and the base of the cylinder 201 is configured to connect to an axle or a wheel. In some examples of the present application, as shown in FIGS. 1 to 3 , a fixing hole 2015 is provided in the base of the cylinder 201, and an axle passes through the fixing hole 2015 to connect the cylinder 201 and the axle.

[0025] The piston 202 is located in the cylinder 201 and defines an upper chamber 2011 and a lower chamber 2012 together with the cylinder 201. The piston rod 203 is provided on the piston 202 and configured to be connected to the vehicle body. An oil passage 204 is provided in the piston rod 203. An oil passage hole is provided at the upper end of the oil passage 204, and the oil passage 204 communicates with the lower chamber 2012.

[0026] The oil passage hole is configured to communicate with the outside, and the oil in the lower chamber 2012 communicates with the outside via the oil passage 204.

[0027] Specifically, the vehicle includes a hydraulic suspension system having an oil storage device, and oil in the oil storage device may enter the oil passage 204 through the oil passage hole, or oil in the lower chamber 2012 may enter the oil storage device through the oil passage hole.

[0028] Specifically, the piston rod 203 is formed as a hollow structure and defines an oil passage 204, and oil passes through the oil passage 204 into the lower chamber 2012 and pushes the piston 202 upward, and the piston 202 moves and pushes the piston rod 203 upward.

[0029] When the piston rod 203 moves downward under external pressure, the oil in the lower chamber 2012 flows out of the oil passage 204 and into the hydraulic oil passage.

[0030] As can be seen, a vehicle will encounter various road conditions while traveling, and once the suspension system of a vehicle in the related art is selected, it cannot be adjusted while the vehicle is traveling. Therefore, the conventional suspension can only ensure that the vehicle achieves optimal matching of performance under specific road and speed conditions, and can only passively bear the forces acting on the vehicle body from the ground. It cannot change the suspension parameters according to differences in road and vehicle speed, and cannot actively control the forces acting on the vehicle body from the ground.

[0031] When the shock absorber assembly 2 according to the embodiment of the present application is applied to a vehicle, if it is necessary to raise the height of the vehicle body, oil from the hydraulic oil passage flows into the lower chamber 2012, moving the piston rod 203 upward to raise the vehicle body. When the vehicle body receives an external impact force, the piston rod 203 moves downward to buffer the impact force.

[0032] As can be understood, when a vehicle is running, the axle generates vibrations such as shaking relative to the vehicle body. When the shock absorber assembly 2 according to the embodiment of the present application is installed on a vehicle, the cylinder 201 is attached to the axle or wheel, and the piston rod 203 is connected to the vehicle body. As can be seen from this, the tip of the piston rod 203 is stationary relative to the vehicle body, and the cylinder 201 can move relative to the piston rod 203 together with the axle. Because the oil passage 204 of the piston rod 203 communicates with the outside through the oil flow path, the impact of axle vibration on the connection point of the oil flow path is reduced, the connection of the oil flow path is stabilized, and wear at the connection point between the oil flow path and an external oil storage device that stores oil is reduced, thereby reducing wear at the connection point between the oil flow path and the piston rod 203.

[0033] The shock absorber assembly 2 according to the embodiment of the present application can reduce weight and costs by providing an oil passage 204 in the piston rod 203. Furthermore, since the oil passage 204 is connected to the lower chamber 2012, oil can flow in and out of the lower chamber 2012. This allows the position of the piston rod 203 and the height of the vehicle body to be adjusted, improving the vehicle's operational stability without compromising vehicle comfort, and effectively resolving the trade-off between vehicle comfort and operational stability. Furthermore, the connection of the oil flow path is stabilized, preventing wear at the connection points due to vibration and minimizing oil leakage at the connection points.

[0034] 3 and 4, in some embodiments of the present application, a first connection port 2013 is further formed on the side wall of the cylinder 201, and the first connection port 2013 is located close to the upper end of the cylinder 201 and communicates with the upper chamber 2011. Thus, since the first connection port 2013 is provided and communicates with the outside, when the piston rod 203 moves, the oil in the upper chamber 2011 flows into or out of the upper chamber 2011 through the first connection port 2013, and the oil can adjust the position of the piston rod 203 to achieve the purpose of adjusting the height of the vehicle body.

[0035] 3 and 4, in some embodiments of the present application, a second connection port 2014 is further formed on the side wall of the cylinder 201, and the second connection port 2014 is located close to the bottom end of the cylinder 201 and communicates with the lower chamber 2012. Thus, since the second connection port 2014 is provided and communicates with the outside, when the piston rod 203 moves, the oil in the lower chamber 2012 flows into or out of the lower chamber 2012 through the second connection port 2014, and the oil can adjust the position of the piston rod 203 to achieve the purpose of adjusting the height of the vehicle body.

[0036] 1 to 4 , in some embodiments of the present application, shock absorber assembly 2 further includes buffer 206, wherein an upper end of piston rod 203 extends from cylinder 201, buffer 206 is fitted onto piston rod 203 and connected to the vehicle body, and the upper end of piston rod 203 extends from buffer 206 and is spaced apart from the vehicle body. That is, when shock absorber assembly 2 of the present application is installed on a vehicle, buffer 206 is installed on the vehicle body and the upper end of piston rod 203 is spaced apart from the vehicle body, so that buffer 206 can serve to buffer vibrations, and since the upper end of piston rod 203 extends from buffer 206, the impact of axle vibrations on the upper end of piston rod 203 can be further reduced, thereby further avoiding situations such as wear due to vibration at the connection points and minimizing fluid leakage at the connection points.

[0037] In some embodiments of the present application, as shown in Figures 3 and 4, the shock absorber assembly 2 further includes a cover 207, and the buffer 206 is configured to be connected to the vehicle body via the cover 207. That is, the cover 207 is connected to the vehicle body, and the buffer 206 is provided between the cover 207 and the cylinder 201, thereby improving the connection reliability between the shock absorber assembly 2 and the vehicle body. Preferably, the cover 207 is a wheel cover. As can be understood, a wheel cover refers to a fender or mudguard on a vehicle, that is, an existing part of the vehicle can be used as the cover 207, thereby reducing costs.

[0038] 3, the shock absorber assembly 2 further includes a joint 208, which communicates with the upper end of the oil passage 204 and with the outside. Thus, the provision of the joint 208 makes it easy to connect the shock absorber assembly 2 to the outside.

[0039] 3, preferably, a cavity is formed within the coupling 208, and a third connection port 2081 and a fourth connection port 2082 are formed in the coupling 208, both of which communicate with the cavity, the extension direction of the third connection port 2081 is set perpendicular to the extension direction of the fourth connection port 2082, the third connection port 2081 communicates with the upper end of the oil passage 204, and the fourth connection port 2082 communicates with the outside. Thus, by providing the third connection port 2081 and the fourth connection port 2082, the flow direction of the oil flowing out of the oil passage 204 can be changed, and the location of the oil storage device and the location of the shock absorber assembly 2 are not limited.

[0040] 1 to 4, in some embodiments of the present application, the shock absorber assembly 2 further includes a spring 205, which is in contact between the buffer 206 and the cylinder 201. Thus, by providing the spring 205, the vibration reduction effect of the shock absorber assembly 2 is further improved.

[0041] Preferably, a support member 209 is provided on the cylinder 201, and the spring 205 abuts between the buffer body 206 and the support member 209. Thus, by providing the support member 209 to support the spring 205, assembly of the spring 205 becomes easy. In some examples of the present application, the support member 209 may be fitted onto the outer peripheral wall of the cylinder 201, and the support member 209 and the cylinder 201 may be connected by interference fit or welding to ensure that the support member 209 is securely fixed.

[0042] By providing the first and second connection ports, it is possible to realize interconnection between left and right shock absorbers or between front and rear shock absorbers, thereby realizing anti-roll and anti-pitch functions.

[0043] In some embodiments of the present application, the first connection port of the left front shock absorber assembly communicates with the second connection port of the right front shock absorber assembly, thereby realizing communication between the upper chamber of the left front shock absorber assembly and the lower chamber of the right front shock absorber assembly, and the second connection port of the left front shock absorber assembly communicates with the first connection port of the right front shock absorber assembly, thereby realizing communication between the lower chamber of the left front shock absorber assembly and the upper chamber of the right front shock absorber assembly.

[0044] Similarly, the first connection port of the left rear shock absorber assembly communicates with the second connection port of the right rear shock absorber assembly, thereby establishing communication between the upper chamber of the left rear shock absorber assembly and the lower chamber of the right rear shock absorber assembly, and the second connection port of the left rear shock absorber assembly communicates with the first connection port of the right rear shock absorber assembly, thereby establishing communication between the lower chamber of the left rear shock absorber assembly and the upper chamber of the right rear shock absorber assembly.This establishes communication between the left and right shock absorbers and also provides anti-roll function.

[0045] Specifically, when the vehicle has a tendency to roll, the shock absorbers on one side are in a compressed state, for example, the left front shock absorber assembly and the left rear shock absorber assembly are compressed. In this case, the oil in the lower chamber of the left front shock absorber assembly flows into the upper chamber of the right front shock absorber assembly, and the oil in the lower chamber of the left rear shock absorber assembly flows into the upper chamber of the right rear shock absorber assembly, thereby lowering the right front shock absorber assembly and the right rear shock absorber assembly and aligning the left and right shock absorber assemblies.

[0046] In some embodiments of the present application, the first connecting port of the left front shock absorber assembly communicates with the second connecting port of the left rear shock absorber assembly, and the second connecting port of the left front shock absorber assembly communicates with the first connecting port of the left rear shock absorber assembly, thereby achieving communication between the upper chamber of the left front shock absorber assembly and the lower chamber of the left rear shock absorber assembly, the lower chamber of the left front shock absorber assembly communicates with the upper chamber of the left rear shock absorber assembly, the upper chamber of the right front shock absorber assembly communicates with the lower chamber of the right rear shock absorber assembly, and the lower chamber of the right front shock absorber assembly communicates with the upper chamber of the right rear shock absorber assembly, thereby achieving communication between the front and rear axle shock absorbers and further achieving an anti-pitch function.

[0047] Specifically, when the vehicle has a pitch tendency, one of the front and rear shock absorbers is compressed, for example, the piston rods of the left front shock absorber assembly and the right front shock absorber assembly are compressed, causing the oil in the lower chamber of the left front shock absorber assembly to flow into the upper chamber of the left rear shock absorber assembly, and the oil in the lower chamber of the right front shock absorber assembly to flow into the upper chamber of the right rear shock absorber assembly, thereby lowering the piston rods of the left rear shock absorber assembly and the right rear shock absorber assembly, and aligning the front and rear shock absorber assemblies.

[0048] A vehicle according to an embodiment of the present application includes a shock absorber assembly 2 according to any of the above embodiments of the present application.

[0049] The vehicle according to the embodiment of the present application can adjust the height of the vehicle body according to road conditions, etc. For example, when passing through a relatively steep mountain road, the vehicle can enter a raising mode to raise the center of gravity of the vehicle and improve the stability of the vehicle. When it is necessary to reduce the impact on the vehicle's running speed, the vehicle can enter a lowering mode to lower the center of gravity of the vehicle. Of course, it should be understood that the above is merely an exemplary description, and the height of the vehicle body can be adjusted according to actual needs during running.

[0050] In the vehicle according to the embodiment of the present application, the height of the vehicle body can be adjusted, improving the vehicle's operational stability without compromising vehicle comfort, thereby effectively resolving the trade-off between vehicle comfort and operational stability. Furthermore, the use of a hollow piston rod 203 not only reduces weight, but also allows the position of the piston rod 203 to be adjusted by utilizing the oil passage 204 defined by the hollow piston rod 203 to allow oil to flow in or out, resulting in a simple adjustment method, high reliability, low cost, and fast response. Furthermore, the connection of the oil passage can be stabilized, preventing wear at the connection points due to vibration and minimizing oil leakage at the connection points.

[0051] In the description of this application, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of this application. They do not indicate or suggest that the devices or parts shown must have a specific orientation and be configured and operated in a specific orientation, and therefore should not be understood as limiting the application.

[0052] Additionally, the terms "first" and "second" are for descriptive purposes only and should not be understood to denote or suggest relative importance or to implicitly indicate the number of technical features depicted. Thus, a feature qualified with "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, "plurality" means two or more unless explicitly and specifically limited.

[0053] In this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," "connected," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, a communication between two components, or an interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

[0054] In this application, unless otherwise clearly specified or limited, a first feature being "above" or "below" a second feature may include direct contact between the first and second features, or indirect contact between the first and second features via an intermediate medium. Furthermore, a first feature being "above," "above," or "on the upper surface" of a second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," or "on the lower surface" of a second feature may include the first feature being directly below or diagonally below the second feature, or may simply mean that the horizontal height of the first feature is lower than that of the second feature.

[0055] In the description herein, references to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the description herein, the exemplary expressions of the above terms are not necessarily limited to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be appropriately combined in any one or more embodiments or examples. Furthermore, if not mutually inconsistent, a person skilled in the art may combine or combine different embodiments or examples described herein and features of different embodiments or examples.

[0056] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and should not be construed as limiting the present application, and that those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application. [Explanation of symbols]

[0057] 2 shock absorber assemblies 200 shock absorber 201 cylinder 2011 Upper Chamber 2012 Lower Chamber 2013 First connection port 2014 Second connection port 202 Piston 203 Piston rod 204 Oil passage 205 Spring 206 Buffer 207 Cover 208 Joint 2081 Third connection port 2082 4th connection port 209 Support member 2015 Fixed hole

Claims

1. A cylinder, a piston, and a piston rod are included. the base of the cylinder is configured to connect to an axle or wheel; the piston is located within the cylinder and cooperates with the cylinder to define an upper chamber and a lower chamber; the piston rod is provided on the piston and configured to be connected to a vehicle body, an oil passage is provided within the piston rod, an oil passage hole is provided at an upper end of the oil passage, the oil passage hole is configured to communicate with the outside, the oil passage communicates with the lower chamber, and the lower chamber communicates with the outside via the oil passage, The shock absorber assembly further comprises a first connection port formed in a side wall of the cylinder, the first connection port being located adjacent to an upper end of the cylinder and communicating with the upper chamber.

2. 2. The shock absorber assembly according to claim 1, wherein a second connection port is further formed in the side wall of the cylinder, the second connection port being located adjacent to a bottom end of the cylinder and communicating with the lower chamber.

3. 2. The shock absorber assembly according to claim 1, further comprising a buffer body, wherein an upper end of the piston rod extends from the cylinder, the buffer body is fitted onto the piston rod and is configured to be connected to a vehicle body, and the upper end of the piston rod extends from the buffer body and is configured to be spaced apart from the vehicle body.

4. The shock absorber assembly of claim 3 , further comprising a cover, wherein the cushion is configured to connect to a vehicle body through the cover.

5. 5. The shock absorber assembly of claim 4, wherein the cover is a wheel cover.

6. 4. The shock absorber assembly according to claim 3, further comprising a coupling, said coupling communicating with the upper end of said oil passage and communicating with the outside.

7. 7. The shock absorber assembly according to claim 6, wherein a cavity is formed within the coupling, and a third connection port and a fourth connection port are formed in the coupling, the third connection port and the fourth connection port are both connected to the cavity, the extension direction of the third connection port is set perpendicular to the extension direction of the fourth connection port, the third connection port is connected to an upper end of the oil passage, and the fourth connection port is configured to be connected to the outside.

8. The shock absorber assembly of claim 3 further comprising a spring, said spring bearing between said buffer and said cylinder.

9. 9. The shock absorber assembly according to claim 8, wherein the cylinder is provided with a support member, and the spring abuts between the buffer body and the support member.

10. A vehicle comprising a shock absorber assembly according to any one of claims 1 to 9.

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