Patent Application
20240217293
The present disclosure relates to the field of vehicles, and more particularly, to a shock absorber assembly and a vehicle having the same.
A suspension transmits an interaction force between a vehicle body and an axle, which is one of four major components of an automobile and a key component that affects driving performance of the automobile. The suspension may transmit an acting force and torque fed back by a road surface, reduce vibration of wheels, alleviate the impact, and improve driving experience of a driver, so that a vehicle obtains better motion characteristics and stable driving ability. The suspension in the related art is mostly composed of a spring, a guide mechanism, a shock absorber, and the like, and a damping coefficient and spring stiffness of the shock absorber are constant. Therefore, it is difficult to balance the comfort and operating stability.
The present disclosure is to resolve one of the technical problems in the related art at least to some extent.
Therefore, the present disclosure provides a shock absorber assembly, to adjust a position of a piston rod, to adjust a height of a vehicle body, and to improve operating stability of a vehicle.
The present disclosure further provides a vehicle having the shock absorber assembly described above.
In a first aspect, the shock absorber assembly according to an embodiment of the present disclosure includes: a cylinder; a piston, located in the cylinder and defining an upper chamber and a lower chamber in the cylinder; and a piston rod, connected to the piston and a vehicle body, a fluid channel being disposed in the piston rod and being in communication with the lower chamber, and a fluid in the lower chamber being in communication with an outside environment through the fluid channel.
According to the shock absorber assembly in the embodiment of the present disclosure, the fluid channel is arranged/disposed in the piston rod, so that a reduction in weight and cost may be realized. In addition, since the fluid channel is in communication with the lower chamber, a fluid is allowed to flow in and out of the lower chamber, so that the position of the piston rod can be adjusted to adjust the height of the vehicle body, and the operating stability of the vehicle can be improved without compromising vehicle comfort, thereby effectively resolving the contradiction between the vehicle comfort and the operating stability. Moreover, the shock absorber assembly may help realize stable connections of oil passages to prevent wear at joints as a result of vibration and prevent liquid leakages at the joints as much as possible.
In some embodiments of the present disclosure, a first interface is further formed on a side wall of the cylinder, and the first interface is disposed close to an upper end of the cylinder and is in communication with the upper chamber.
In some embodiments of the present disclosure, a second interface is further formed on the side wall of the cylinder, and the second interface is disposed close to a lower end of the cylinder and is in communication with the lower chamber.
In some embodiments of the present disclosure, the shock absorber assembly further includes a buffer. An upper end of the piston rod extends out of the cylinder, the buffer is sleeved on the piston rod, and the buffer is configured to connect to the vehicle body. The upper end of the piston rod extends out of the buffer and is configured to be spaced apart from the vehicle body.
In some embodiments of the present disclosure, the shock absorber assembly further includes a cover. The buffer is configured to connect to the vehicle body through the cover.
In an embodiment, the cover is a wheel cover.
In some embodiments of the present disclosure, the shock absorber assembly further includes a connector. The connector is in communication with the upper end of the fluid channel and configured to communicate with the outside environment.
In an embodiment, a cavity is formed in the connector, and a third interface and a fourth interface are disposed on the connector. The third interface and the fourth interface are in communication with the cavity. An extension direction of the third interface is perpendicular to an extension direction of the fourth interface. The third interface is in communication with the upper end of the fluid channel, and the fourth interface is configured to communicate with the outside environment.
In some embodiments of the present disclosure, the shock absorber assembly further includes a spring. The spring abuts between the buffer and the cylinder.
In some embodiments of the present disclosure, the shock absorber assembly further includes a support disposed on the cylinder, and the spring abuts between the buffer and the support.
In a second aspect, a vehicle according to an embodiment of the present disclosure includes the shock absorber assembly according to any of the above embodiments of the present disclosure.
According to the vehicle in the embodiment of the present disclosure, the height of the vehicle body can be adjusted, and the operating stability of the vehicle can be improved without compromising vehicle comfort, thereby effectively resolving the contradiction between the vehicle comfort and the operating stability. Moreover, by using a hollow piston rod, a reduction in weight may be realized, and the fluid channel defined by the hollow piston rod may allow a fluid to enter or be discharged to adjust the position of the piston rod. The adjustment method is simple and has high reliability, low costs, and a rapid response speed. Moreover, the shock absorber assembly may realize stable connections of oil passages to prevent wear at joints as a result of vibration and prevent liquid leakages at the joints as much as possible.
Some of the aspects and advantages of the present disclosure are provided in the following description, and become apparent in the following description or learned through the practice of the present disclosure.
Shock absorber assembly 2, shock absorber 200, cylinder 201, upper chamber 2011, lower chamber 2012, first interface 2013, second interface 2014, piston 202, piston rod 203, fluid channel 204, spring 205, buffer 206, cover 207, connector 208, third interface 2081, fourth interface 2082, support 209, and fixing hole 2015.
Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, where the same or similar elements or elements having the same or similar functions are represented by the same or similar reference numerals throughout the description. The embodiments described below with reference to the accompanying drawings are to explain the present disclosure, and should not be construed as a limitation on the present disclosure.
A shock absorber assembly 2 according to an embodiment of the present disclosure is described below with reference to
The shock absorber assembly 2 according to the embodiment of the present disclosure includes a cylinder 201, a piston 202, and a piston rod 203. A base of the cylinder 201 is configured to connect to the axle or a wheel. In some embodiments of the present disclosure, as shown in
The piston 202 is located in the cylinder 201 to define an upper chamber 2011 and a lower chamber 2012 in the cylinder 201. The piston rod 203 is arranged/disposed on the piston 202, and the piston rod 203 is configured to connect to the vehicle body. A fluid channel 204 is arranged/disposed in the piston rod 203. An upper end of the fluid channel 204 is provided with a fluid hole, and the fluid channel 204 is in communication with the lower chamber 2012.
The fluid hole is configured to communicate with an outside environment, and a fluid in the lower chamber 2012 is in communication with the outside environment through the fluid channel 204.
In an embodiment, the vehicle includes a hydraulic suspension system. The hydraulic suspension system has a liquid storage device. A fluid in the liquid storage device may enter the fluid channel 204 through the fluid hole, or the fluid in the lower chamber 2012 is discharged into the liquid storage device through the fluid hole.
In an embodiment, the piston rod 203 is a hollow structure to define the fluid channel 204, the fluid may enter the lower chamber 2012 through the fluid channel 204 to push the piston 202 to move upward, and the piston 202 may push the piston rod 203 to move.
When the piston rod 203 moves downward under an external pressure, the fluid in the lower chamber 2012 is discharged from the fluid channel 204 to enter a hydraulic oil channel.
It may be understood that the vehicle may encounter various road conditions during driving. The suspension system of the vehicle in the related art, once selected, cannot be adjusted during driving, so that the conventional suspension can only make that the automobile achieves a performance matching a specific road and speed condition, and can only passively bear an acting force of the ground on the vehicle body, but suspension parameters cannot be changed in accordance with different roads and speeds, and the acting force of the ground on the vehicle body cannot be actively controlled.
The shock absorber assembly 2 according to the embodiment of the present disclosure may be applied to a vehicle, which enables a fluid in the hydraulic oil channel to enter the lower chamber 2012 so that the piston rod 203 moves upward to lift the vehicle body when a height of the vehicle body needs to be raised. When the vehicle body is subjected to an external impact force, the piston rod 203 may move downward to cushion the impact force.
It may be understood that during driving of the vehicle, the axle may experience vibration such as shaking relative to the vehicle body. When the shock absorber assembly 2 according to the embodiment of the present disclosure is mounted to the vehicle, the cylinder 201 is mounted to the axle or the wheel, and the piston rod 203 is connected to the vehicle body. It may be understood that a top end of the piston rod 203 is stationary relative to the vehicle body, and the cylinder 201 may move relative to the piston rod 203 along with the axle. Since the fluid channel 204 of the piston rod 203 is enabled to communicate with the outside environment through oil passages, the vibration of the axle on joints of the oil passages may be reduced, stable connections of the oil passages may be realized, wear at the joints of the oil passages and the liquid storage device for storing a fluid in the outside environment may be reduced, and wear at the joints of the oil passages and the piston rod 203 may be reduced.
According to the shock absorber assembly 2 in the embodiment of the present disclosure, the fluid channel 204 is arranged/disposed in the piston rod 203, so that a reduction in weight and cost may be realized. In addition, since the fluid channel 204 is in communication with the lower chamber 2012, a fluid may flow in and out of the lower chamber 2012, so that the position of the piston rod 203 can be adjusted to adjust the height of the vehicle body, and the operating stability of the vehicle can be improved without compromising vehicle comfort, thereby effectively resolving the contradiction between the vehicle comfort and the operating stability. Moreover, the shock absorber assembly may help realize stable connections of oil passages to prevent wear at joints as a result of vibration and prevent liquid leakages at the joints as much as possible.
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In some embodiments of the present disclosure, as shown in
In some embodiments of the present disclosure, as shown in
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In an embodiment, a support 209 is arranged/disposed on the cylinder 201, and the spring 205 abuts between the buffer 206 and the support 209. Therefore, the support 209 is configured to support the spring 205, to facilitate assembly of the spring 205. In some embodiments of the present disclosure, the support 209 may be sleeved on a peripheral wall of the cylinder 201, and the support 209 and the cylinder 201 may be connected through interference fit or welding, to ensure reliable fixation of the support 209.
A first connection port and a second connection port are arranged/disposed to realize interconnection of left and right shock absorbers or interconnection of front and rear shock absorbers, to realize a roll prevention or pitch prevention function.
In some embodiments of the present disclosure, the first connection port of the left front shock absorber assembly is in communication with the second connection port of the right front shock absorber assembly, so that an upper chamber of the left front shock absorber assembly is in communication with a lower chamber of the right front shock absorber assembly. The second connection port of the left front shock absorber assembly is in communication with the first connection port of the right front shock absorber assembly, so that a lower chamber of the left front shock absorber assembly is in communication with an upper chamber of the right front shock absorber assembly.
Similarly, the first connection port of the left rear shock absorber assembly is in communication with the second connection port of the right rear shock absorber assembly, so that an upper chamber of the left rear shock absorber assembly is in communication with a lower chamber of the right rear shock absorber assembly. The second connection port of the left rear shock absorber assembly is in communication with the first connection port of the right rear shock absorber assembly, so that a lower chamber of the left rear shock absorber assembly is in communication with an upper chamber of the right rear shock absorber assembly. In this way, the communication of the left and right shock absorbers is realized, and then the roll prevention function is realized.
In an embodiment, when a vehicle tends to roll, a side of the shock absorber is in compression, for example, the left front shock absorber assembly and the left rear shock absorber assembly are compressed. In this case, a fluid in the lower chamber of the left front shock absorber assembly may enter the upper chamber of the right front shock absorber assembly, and a fluid in the lower chamber of the left rear shock absorber assembly may enter the upper chamber of the right rear shock absorber assembly, to lower a piston rod of the right front shock absorber assembly and a piston rod of the right rear shock absorber assembly to realize a consistent height on the left and on the right.
In some embodiments of the present disclosure, the first connection port of the left front shock absorber assembly is in communication with the second connection port of the left rear shock absorber assembly, and the second connection port of the left front shock absorber assembly is in communication with the first connection port of the left rear shock absorber assembly, so that the upper chamber of the left front shock absorber assembly is in communication with the lower chamber of the left rear shock absorber assembly, the lower chamber of the left front shock absorber assembly is in communication with the upper chamber of the left rear shock absorber assembly, the upper chamber of the right front shock absorber assembly is in communication with the lower chamber of the right rear shock absorber assembly, and the lower chamber of the right front shock absorber assembly is in communication with the upper chamber of the right rear shock absorber assembly. In this way, communication between shock absorbers on a front axle and shock absorbers on a rear axle is realized to realize the pitch prevention function.
In an embodiment, when the vehicle tends to pitch, one of piston rods in a front side and a rear side is compressed. For example, a piston rod of the left front shock absorber assembly and a piston rod of the right front shock absorber assembly are compressed. The fluid in the lower chamber of the left front shock absorber assembly may flow into the upper chamber of the left rear shock absorber assembly, and a fluid in the lower chamber of the right front shock absorber assembly may flow into the upper chamber of the right rear shock absorber assembly, to lower a piston rod of the left rear shock absorber assembly and a piston rod of the right rear shock absorber assembly to realize a consistent height in the front and in the rear.
A vehicle according to an embodiment of the present disclosure includes the shock absorber assembly 2 according to any of the above embodiments of the present disclosure.
For the vehicle according to the embodiment of the invention, the height of the vehicle body may be adjusted depending on a road condition. For example, when the vehicle passes through a rugged mountain road, a lifting mode may be enabled, so as to raise the center of mass of the vehicle and improve driving stability of the vehicle. When influence of the vehicle body on the driving speed needs to reduced, a height reduction mode may be enabled to lower the center of mass of the vehicle. It may be understood that the above are only some of the descriptions, and the height of the vehicle body may also be adjusted based on actual requirements during driving.
According to the vehicle in the embodiment of the present disclosure, the height of the vehicle body can be adjusted, and the operating stability of the vehicle can be improved without compromising vehicle comfort, thereby effectively resolving the contradiction between the vehicle comfort and the operating stability. Moreover, by using the hollow piston rod 203, a reduction in weight may be realized, and the fluid channel 204 defined by the hollow piston rod 203 may allow a fluid to enter or be discharged to adjust the position of the piston rod 203. The adjustment method is simple and has high reliability, low costs, and a rapid response speed. Moreover, the shock absorber assembly may help realize stable connections of oil passages to prevent wear at joints as a result of vibration and prevent liquid leakages at the joints as much as possible.
In the descriptions of the present disclosure, it should be understood that orientation or position relationships indicated by the terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “anticlockwise”, “axial direction”, “radial direction”, and “circumferential direction” are based on orientation or position relationships shown in the accompanying drawings, and are merely used for ease and brevity of description of the present disclosure, rather than indicating or implying that the mentioned device or element needs to have a particular orientation or be constructed and operated in a particular orientation. Therefore, such terms should not be construed as a limitation on the present disclosure.
In addition, terms “first” and “second” are merely for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly specifying a quantity of technical features indicated. Therefore, a feature limited by “first” or “second” may explicitly or implicitly include one or more of the features. In the description of the present disclosure, “multiple” means more than two, unless otherwise explicitly and specifically defined.
In the present disclosure, unless otherwise explicitly specified or defined, the terms such as “mount”, “connected”, “connection”, and “fix” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, internal communication between two elements, or an interaction relationship between two elements. For a person of ordinary skill in the art, the specific meanings of the above terms in the present disclosure may be understood according to specific circumstances.
In the present disclosure, unless otherwise explicitly specified and defined, a first feature being “above” or “below” a second feature may mean direct contact between the first feature and the second feature, or indirect contact between the first feature and the second feature by using an intermediate medium. Moreover, the first feature being “over”, “above”, and “on” the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely mean that the first feature is at a higher horizontal position than the second feature. The first feature being “below”, “under”, and “beneath” the second feature may mean that the first feature is right below or obliquely below the second feature, or merely indicate that the first feature is at a lower horizontal position than the second feature.
In the descriptions of this specification, the description of reference terms such as “an embodiment”, “some embodiments”, “an example”, “a specific example”, or “some examples” mean that specific features, structures, materials, or characteristics described in combination with the embodiment or the example are included in at least one embodiment or example of the present disclosure. In this specification, schematic descriptions of the above terms are not necessarily directed at the same embodiment or example. Besides, the specific features, the structures, the materials, or the characteristics that are described may be combined in proper manners in any one or more embodiments or examples. In addition, a person skilled in the art may integrate or combine different embodiments or examples described in this specification and features of the different embodiments or examples as long as they do not contradict each other.
Although the embodiments of the present disclosure have been shown and described above, it may be understood that, the above embodiments are exemplary and should not be construed as a limitation on the present disclosure. A person of ordinary skill in the art may make changes, modifications, replacements, or variations to the above embodiments within the scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202123448219.2 | Dec 2021 | CN | national |
The application is a continuation application of International Patent Application No. PCT/CN2022/143873 filed on Dec. 30, 2022, which is based on and claims priority to and benefits of Chinese Patent Application No. 202123448219.2 filed on Dec. 30, 2021. The entire content of all of the above-referenced applications is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2022/143873 | Dec 2022 | WO |
| Child | 18608341 | US |
