Vibration reduction assembly for vehicle and vehicle

Abstract

The utility model discloses a vibration reduction assembly for a vehicle and the vehicle, the vibration reduction assembly comprises a cylinder body, a piston and a piston rod, a piston cavity is formed in the cylinder body, the piston is contained in the piston cavity and divides the piston cavity into an upper cavity body and a lower cavity body, and the upper cavity body and the lower cavity body are selectively communicated through the piston; at least part of the piston rod is contained in the piston cavity, the piston rod is connected with the piston, a cooling cavity is formed in the piston rod and suitable for containing a cooling medium, the cooling medium can be used for reducing the temperature of hydraulic oil, shock absorber sealing failure caused by the too high temperature of the hydraulic oil is avoided, and the reliability of the shock absorber is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a vibration damping assembly for a vehicle and the vehicle. Background Art

[0002] When a vehicle is traveling on an uneven road, the vehicle will be bumpy. In order to improve the comfort of the vehicle, a shock absorber is required between the vehicle body and the ground to attenuate the bumping of the vehicle body. In the related technology, shock absorbers are installed in most automobile suspension systems. The shock absorbers convert the vibration kinetic energy of the vehicle body into heat energy, which is absorbed by the oil and then dissipated into the atmosphere through the shell. However, when the ambient temperature is high or the shock absorber works frequently during long-distance driving, the shock absorber oil continues to work and heats up. The rubber or other polymer materials used in the oil seals will expand thermally, and the sealing effect between the seals and the mating parts will deteriorate. Small gaps may appear in the originally tightly fitted parts, causing the shock absorber to easily fail to seal and leak oil. At the same time, the viscosity of hydraulic oil will decrease at high temperatures, and the fluidity will become stronger. Low-viscosity hydraulic oil is more likely to seep out from poorly sealed parts, causing oil leakage. Therefore, how to avoid shock absorber seal failure and oil leakage has become a technical problem to be solved in this application. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a vibration damping assembly for a vehicle, in which a cooling medium can be used to reduce the temperature of the hydraulic oil, thereby preventing the vibration damper seal from failing due to excessively high hydraulic oil temperature and improving the reliability of the vibration damper.

[0004] According to an embodiment of the present application, a shock-absorbing assembly for a vehicle includes: a cylinder body, a piston chamber formed therein; a piston, the piston being accommodated in the piston chamber and dividing the piston chamber into an upper chamber and a lower chamber, the piston selectively connecting the upper chamber with the lower chamber; a piston rod, at least a portion of the piston rod being accommodated in the piston chamber, the piston rod being connected to the piston, a cooling chamber being formed inside the piston rod, and the cooling chamber being suitable for accommodating a cooling medium.

[0005] According to the vibration damping assembly for vehicles in the embodiment of the present application, a cooling chamber is formed inside the piston rod, and a cooling medium is contained in the cooling chamber. During the operation of the shock absorber, since the piston rod is connected to the piston, the heat generated around the piston will be transferred to the piston rod cooling medium, and the cooling medium can absorb the heat from the surrounding environment. After the cooling medium absorbs the heat, it transfers the heat to the wall of the cooling chamber by heat conduction. Since there is a temperature difference between the piston rod and the external environment, the heat will be further transferred from the wall of the cooling chamber to the surrounding air, thereby achieving the effect of heat dissipation. The absorption and dissipation of heat by the cooling medium can alleviate the temperature rise of the piston, piston rod and hydraulic oil, and maintain the good sealing effect of related seals. At the same time, the temperature regulation of the cooling medium also keeps the viscosity of the hydraulic oil within the normal working range to avoid oil leakage due to seal failure, reduce the risk of hydraulic oil leakage, and improve the service life of the shock absorber and the reliability of the shock absorber.

[0006] According to some embodiments of the present application, the shock absorbing assembly for a vehicle includes: a main body section; a mating section, wherein the mating section is arranged at one end of the main body section, and the piston is sleeved on the outer periphery of the mating section; wherein the cooling cavity is formed in the main body section and / or the mating section.

[0007] According to some embodiments of the present application, in the vibration damping assembly for a vehicle, at least a portion of the outer surface of the body segment is formed with protrusions and / or recesses.

[0008] According to some embodiments of the present application, in the vibration damping assembly for a vehicle, the protrusion or the recess surrounds the outer surface of the body segment or extends along the generatrix direction of the body segment.

[0009] According to some embodiments of the vibration damping assembly for a vehicle of the present application, the protrusion or the recess is configured in a ring or spiral shape surrounding the body segment.

[0010] According to some embodiments of the present application, the shock absorbing assembly for a vehicle further includes: a mounting seat connected to the other end of the body segment; and an elastic member supported between the mounting seat and the cylinder body.

[0011] According to some embodiments of the present application, the shock absorbing assembly for a vehicle is configured as a coil spring, one end of which is supported on the mounting seat; a support seat is formed on the periphery of the cylinder body, and the other end of the coil spring is supported on the support seat.

[0012] According to some embodiments of the present application, the vibration damping assembly for a vehicle further includes: a buffer block, which is arranged on a side of the mounting seat facing the cylinder body, and the buffer block is constructed as a flexible member.

[0013] According to some embodiments of the present application, in the shock absorbing assembly for a vehicle, a valve hole communicating with the upper cavity and the lower cavity is formed on the piston, and a valve plate for selectively opening or closing the valve hole is provided in the valve hole.

[0014] The following briefly describes a vehicle according to an embodiment of the present application.

[0015] The vehicle according to the embodiment of the present application includes the shock absorbing assembly of any of the above-mentioned embodiments. Since the vehicle according to the present embodiment is provided with the shock absorbing assembly of any of the above-mentioned embodiments, the vehicle according to the present application has a shock absorbing assembly with a long service life. Since the shock absorbing assembly can assist in heat dissipation through the cooling medium, the shock absorber seal failure and oil leakage are avoided, the frequent replacement due to shock absorber failure is reduced, and the service life of the shock absorber is extended. The vehicle does not need to frequently maintain and replace the shock absorber during use, thereby reducing the maintenance cost and repair time cost of the vehicle. The highly reliable shock absorbing assembly can avoid poor shock absorption effect due to seal failure and oil leakage, avoid the vehicle body shaking, tilting, etc. during driving, affecting the driver's control of the vehicle, and reduce the risk of accidents caused by loss of control of the vehicle posture.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through 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 apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 1 is a schematic structural diagram of a vibration reduction assembly for a vehicle according to an embodiment of the present application;

[0019] Figure 2 1 is a schematic structural diagram of a piston rod of a vibration damping assembly for a vehicle according to an embodiment of the present application;

[0020] Figure 3 This is a schematic structural diagram of a piston rod with protrusions and recesses of a shock-absorbing assembly for a vehicle according to an embodiment of the present application.

[0021] Reference numerals:

[0022] 100. Vibration reduction assembly;

[0023] 1. Cylinder body; 11. Piston chamber; 111. Upper chamber; 112. Lower chamber; 12. Support seat;

[0024] 2. Piston;

[0025] 3. Piston rod; 31. Cooling chamber; 32. Body section; 321. Protrusion; 322. Recess; 33. Fitting section;

[0026] 4. Mounting seat;

[0027] 5. Coil spring;

[0028] 6. Buffer block. DETAILED DESCRIPTION

[0029] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0030] Reference below Figure 1-Figure 2 A vibration damping assembly 100 for a vehicle according to an embodiment of the present application is described.

[0031] According to an embodiment of the present application, a shock absorbing assembly 100 for a vehicle includes a cylinder body 1, a piston 2 and a piston rod 3. A piston chamber 11 is formed in the cylinder body 1. The piston 2 is accommodated in the piston chamber 11 and divides the piston chamber 11 into an upper chamber 111 and a lower chamber 112. The piston 2 can selectively connect the upper chamber 111 with the lower chamber 112. At least a portion of the piston rod 3 is accommodated in the piston chamber 11. The piston rod 3 is connected to the piston 2. A cooling chamber 31 is formed inside the piston rod 3. The cooling chamber 31 is suitable for accommodating a cooling medium.

[0032] According to the vibration damping assembly 100 for a vehicle according to an embodiment of the present application, a cooling medium is contained in the cooling chamber 31 formed inside the piston rod 3, and hydraulic oil is contained in the piston chamber. The cooling medium has good heat transfer performance and can absorb heat from the surrounding environment. During the operation of the shock absorber, since the piston rod 3 is connected to the piston 2, the heat generated around the piston 2 will be transferred to the piston rod 3, and the cooling medium in the cooling chamber 31 can absorb the heat generated around the piston 2. After the cooling medium absorbs the heat, it transfers the heat to the wall of the cooling chamber 31 by heat conduction. Since there is a temperature difference between the piston rod 3 and the external environment, the heat will be further transferred from the wall of the cooling chamber 31 to the surrounding air, thereby achieving the heat dissipation effect.

[0033] It can be understood that the temperature rise of the piston 2 and the piston rod 3 is alleviated by the effective absorption and dissipation of heat by the cooling medium, and the seal will not experience excessive thermal expansion or performance degradation due to high temperature. The sealing effect between the sealing material set on the piston chamber 11 and the cylinder body 1 and the piston rod 3 can be maintained in good condition, which can avoid the occurrence of shock absorber seal failure and oil leakage. At the same time, due to the heat dissipation of the cooling medium, the temperature increase of the piston 2 and the piston rod 3 is limited, so that the viscosity of the hydraulic oil in the piston chamber 11 is maintained within the normal working range. Hydraulic oil with normal viscosity can better realize the damping function of the shock absorber. At the same time, since there is no increase in fluidity due to temperature increase, the risk of hydraulic oil leakage will also be reduced. Since the phenomenon of seal failure and oil leakage is avoided, the hydraulic oil and other components inside the shock absorber can continue to work under good working conditions, the normal service life of the seal is guaranteed, and the reliability of the entire shock absorber is improved, thereby extending the service life of the shock absorber.

[0034] According to some embodiments of the present application, a shock absorbing assembly 100 for a vehicle, the piston rod 3 includes a main body section 32 and a mating section 33, wherein the mating section 33 is arranged at one end of the main body section, and the piston 2 is sleeved on the outer periphery of the mating section 33; wherein a cooling cavity 31 is formed on at least one of the main body section 32 and the mating section 33.

[0035] It should be noted that if Figure 1 As shown, one end is Figure 1 The right end is shown, and the other end is Figure 1 Left end shown.

[0036] When the vehicle is running, the shock absorber assembly 100 continues to work, and the reciprocating motion of the piston 2 in the piston chamber 11 and the coordinated motion of the piston rod 3 and the piston 2 generate heat. During the motion, the piston 2 interacts with the hydraulic oil inside the cylinder 1. The internal friction of the hydraulic oil and the friction between the piston 2 and the cylinder wall are the causes of heat generation. Since the piston 2 is sleeved on the outer periphery of the mating section 33 of the piston rod 3, the mating section 33 is in contact with the piston 2 and interacts with each other during the motion, the mating section 33 and the area around the piston 2 are areas where heat is concentrated. The body section 32, as part of the piston rod 3, will also increase in temperature due to the heat transferred from the mating section 33 and the heat conducted by the hydraulic oil.

[0037] When a cooling cavity 31 is formed in the mating section 33, since the mating section 33 is close to the piston 2, it can most directly absorb the heat generated by the movement of the piston 2. The cooling medium in the cooling cavity 31 can absorb the heat and prevent heat from accumulating in the mating section 33, thereby avoiding excessively high temperatures here, which may cause asynchronous thermal expansion of the materials at the connection parts, affect the connection stability between the piston 2 and the piston rod 3, and further affect the normal operation of the entire vibration damping assembly 100.

[0038] When a cooling cavity 31 is formed in the main body section 32, the cooling cavity 31 in the main body section 32 can conduct the heat of the entire piston rod 3. On the one hand, the cooling cavity 31 of the main body section 32 can receive the heat transferred from the mating section 33, preventing the heat from being further conducted along the piston rod 3 to other components, thereby avoiding adverse effects on other components due to local overheating; on the other hand, the heat generated by the movement of the main body section 32 itself can also be absorbed by the cooling medium in the cooling cavity 31, ensuring that the main body section 32 operates within a suitable temperature range and maintaining the structural strength and performance of the main body section 32.

[0039] According to some embodiments of the present application, the vibration damping assembly 100 for a vehicle is formed with at least one of a protrusion 321 and a recess 322 on at least a portion of the outer surface of the body section 32.

[0040] When at least one of the protrusions 321 and recesses 322 exists on at least part of the outer surface of the main body section 32, its actual surface area is significantly increased compared to a smooth outer surface. During the operation of the vibration damping assembly 100, the main body section 32 of the piston rod 3 will generate heat due to its own movement and interaction with other components. The increased surface area provides more favorable conditions for heat dissipation. According to the principles of heat conduction and heat radiation, the larger the surface area of ​​an object, the higher the efficiency of heat exchange with the surrounding environment under the same conditions. Therefore, these protrusions 321 or recesses 322 enable the main body section 32 to dissipate heat to the surrounding air more quickly and effectively, which helps to improve the heat dissipation efficiency of the main body section 32 itself and the entire vibration damping assembly 100.

[0041] According to the vibration damping assembly 100 for a vehicle in some embodiments of the present application, the protrusion 321 or the recess 322 surrounds the outer surface of the body segment 32 or extends along the generatrix direction of the body segment 32 .

[0042] It should be noted that the busbar is the busbar in the general geometric sense. The busbar refers to a rotation surface formed by a plane curve rotating around a fixed straight line in the plane in which it is located. This plane curve is called the busbar.

[0043] During the operation of the vibration damping assembly 100, the heat generated by the body section 32 will be dissipated to the surrounding area. When the protrusions 321 or the recesses 322 surround the outer surface of the body section 32, a continuous heat dissipation surface is formed in the circumferential direction of the piston rod 3, so that the body section 32 can more effectively exchange heat with the surrounding air at all angles. The surrounding protrusions 321 or recesses 322 increase the surface area in the circumferential direction, thereby achieving all-round and efficient heat dissipation, effectively reducing the overall temperature of the body section 32.

[0044] In addition to generating heat circumferentially, the main body section 32 also conducts heat in the axial direction. When the protrusions 321 or recesses 322 extend along the busbar of the main body section 32, the heat dissipation path in the axial direction of the piston rod 3 is expanded. The protrusions 321 or recesses 322 extending along the busbar provide more channels for the conduction and dissipation of axial heat, allowing heat to be more flexibly conducted between the axial and circumferential directions within the main body section 32. When a certain area in the circumferential direction has more heat, the heat can be more quickly conducted to the axial direction for dissipation through these extended protrusions 321 or recesses 322, and vice versa. This helps maintain the overall thermal balance of the main body section 32 and prevents local overheating from adversely affecting the piston rod 3 and the vibration damping assembly 100.

[0045] According to the vibration damping assembly 100 for a vehicle in some embodiments of the present application, the protrusion 321 or the recess 322 is configured in a ring or spiral shape surrounding the body segment 32 .

[0046] When the protrusion 321 or the recess 322 is constructed as a ring surrounding the main body section 32, a continuous annular heat dissipation structure is formed in the circumferential direction of the piston rod 3, thereby increasing the surface area of ​​the main body section 32 in the circumferential direction. During the operation of the vibration damping assembly 100, the heat generated by the main body section 32 will be dissipated to the surrounding areas, and the annular protrusion 321 or the recess 322 provides more heat dissipation paths. The heat can be more efficiently exchanged with the surrounding air through the outer surface of the annular structure, thereby effectively reducing the overall temperature of the main body section 32. Since the annular structure surrounds the main body section 32, the heat dissipation in the circumferential direction will be more uniform.

[0047] When the protrusion 321 or the recess 322 is constructed to spirally surround the main body segment 32, not only the surface area is increased in the circumferential direction, but also it is extended in the axial direction. During the operation of the vibration damping assembly 100, the heat generated by the main body segment 32 can be dissipated in both the axial and circumferential directions through the spiral protrusion 321 or the recess 322. On the one hand, in the circumferential direction, each turn of the spiral structure can increase the heat dissipation area and achieve uniform heat dissipation like a ring structure; on the other hand, in the axial direction, the spiral structure provides a continuous conduction and dissipation path for heat, so that heat can be transferred from one end of the main body segment 32 to the other end along the spiral direction and dissipated into the air, thereby improving the overall heat dissipation efficiency.

[0048] The protrusion 321 or the recess 322 is constructed into a ring or spiral shape surrounding the main body segment 32. The ring structure and the spiral structure can effectively disperse the stress. The stress will be dispersed circumferentially along the ring structure or the spiral structure, so that the stress borne by each stress point is reduced, avoiding the situation where local stress is excessive and causing the material to yield or break, thereby improving the structural strength of the main body segment 32 in the circumferential direction and increasing the service life of the main body segment 32.

[0049] According to some embodiments of the present application, the vibration damping assembly 100 for a vehicle further includes a mounting seat 4 and an elastic member. The mounting seat 4 is connected to the other end of the body section 32 , and the elastic member is supported between the mounting seat 4 and the cylinder body 1 .

[0050] The mounting seat 4 is connected to the other end of the main body section 32 of the piston rod 3, providing a support point for the piston rod 3. During the driving of the vehicle, the shock absorbing assembly 100 will be subjected to the impact force from the road surface and the vibration force of the vehicle body. The mounting seat 4 enables the piston rod 3 to maintain a relatively stable position relationship when subjected to the force, preventing the piston rod 3 from deflecting, bending, etc. due to uneven force or excessive shaking, thereby ensuring the integrity of the internal structure and normal operation of the shock absorbing assembly 100. The elastic member is supported between the mounting seat 4 and the cylinder body 1, playing an additional buffering and supporting role. When vibration occurs during the driving of the vehicle, the elastic member can absorb part of the impact force from the direction of the mounting seat 4, reducing the pressure on the piston rod 3 and the piston 2.

[0051] Mounting base 4 and the elastic member work in conjunction with the piston rod 3, piston 2, and other components of the vibration damping assembly 100 to enhance vibration damping performance. When the vehicle travels on bumpy roads, the reciprocating motion of piston 2 within piston chamber 11 is a primary mode of vibration reduction. However, when used alone, this piston mode of vibration reduction cannot completely eliminate all vibrations. The elastic member's cushioning effect between mounting base 4 and cylinder body 1 further absorbs and dissipates any remaining vibration energy.

[0052] According to some embodiments of the present application, the shock absorbing assembly 100 for a vehicle is constructed as an elastic member as a coil spring 5 , one end of which is supported on the mounting seat 4 ; a support seat 12 is formed on the outer periphery of the cylinder body 1 , and the other end of the coil spring 5 is supported on the support seat 12 .

[0053] The coil spring 5 has good elastic deformation ability and can undergo elastic deformation and store elastic potential energy when subjected to external force. When vibration occurs during the vehicle's driving, the coil spring 5 will be compressed or stretched accordingly according to the amplitude and frequency of the vibration, and absorb and dissipate vibration energy through this elastic deformation. The spiral structure allows the spring to have a certain expansion and contraction space in the axial direction, which can adapt to different degrees of compression and stretching requirements, thereby effectively buffering the impact force from the support seat 12 and the mounting seat 4 on the cylinder body 1.

[0054] According to some embodiments of the present application, the vibration damping assembly 100 for a vehicle further includes a buffer block 6 , which is disposed on a side of the mounting seat 4 facing the cylinder body 1 , and is configured as a flexible member.

[0055] The buffer block 6 is arranged on the side of the mounting seat 4 facing the cylinder body 1. The buffer block 6 is constructed as a flexible part. The main function of the buffer block 6 is buffering and shock absorption. When the car is driving on a rough road, the buffer block 6 can absorb and disperse the vibration from the road, reduce the vibration amplitude of the car body, and thus improve the driving stability and comfort. Since the buffer is a flexible part, the buffer can absorb and disperse the vibration. The buffer block 6 can also reduce the noise generated during driving to a certain extent, including the sound generated by friction and collision of the vehicle suspension system and surrounding positions, making the driving environment quieter.

[0056] According to the shock absorbing assembly 100 for a vehicle in some embodiments of the present application, a valve hole connecting the upper cavity 111 and the lower cavity 112 is formed on the piston 2, and a valve plate is provided in the valve hole for selectively opening or closing the valve hole.

[0057] It will be appreciated that when a valve hole is formed on piston 2, connecting the upper and lower chambers 111, 112, and a valve disc is disposed within the valve hole to selectively open or close the valve hole, the connection between the upper and lower chambers 111, 112 can be selectively controlled according to the vehicle's driving conditions. During vehicle operation, varying road conditions and driving maneuvers will generate vibrations of varying frequencies and amplitudes. By regulating the connectivity between the upper and lower chambers 111, 112 through the valve disc, the flow resistance of the hydraulic oil between the upper and lower chambers 111, 112 can be varied, thereby adjusting the damping characteristics of the vibration reduction assembly.

[0058] When the vehicle is traveling on a flat surface at a relatively stable speed, the valve disc can be adjusted to ensure relatively smooth communication between the upper and lower cavities 111, 112. At this point, the hydraulic oil flow resistance is low, and the vibration damping assembly provides a relatively small damping force, allowing the vehicle to travel smoothly and reducing unnecessary energy loss. However, when the vehicle travels over bumpy roads, the valve disc changes the communication state, increasing the hydraulic oil flow resistance between the upper and lower cavities 111, 112, allowing the vibration damping assembly to provide a larger damping force, thereby more effectively absorbing and dissipating vibrations from the road.

[0059] In some embodiments of the present application, one end of the mounting seat 4 is provided as the top of the piston rod 3 , the piston rod 3 is a hollow rod, and a cooling cavity 31 is formed in the piston rod 3 .

[0060] The following briefly describes a vehicle according to an embodiment of the present application.

[0061] The vehicle according to the embodiment of the present application includes the shock absorbing assembly 100 of any of the above-mentioned embodiments. Since the vehicle according to the present embodiment is provided with the shock absorbing assembly 100 of any of the above-mentioned embodiments, the vehicle according to the present application has a shock absorbing assembly 100 with a long service life. Since the shock absorbing assembly 100 can assist in heat dissipation through a cooling medium, the shock absorber seal failure and oil leakage are avoided, the frequent replacement due to shock absorber failure is reduced, and the service life of the shock absorber is extended. The vehicle does not need to frequently maintain and replace the shock absorber during use, thereby reducing the maintenance cost and repair time cost of the vehicle. The highly reliable shock absorbing assembly 100 can avoid poor shock absorption effect due to seal failure and oil leakage, avoid the vehicle body shaking, tilting, etc. during driving, affecting the driver's control of the vehicle, and reduce the risk of accidents caused by loss of control of the vehicle posture.

[0062] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0063] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0064] In the description of this application, “plurality” means two or more.

[0065] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0066] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0067] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vibration damping assembly for a vehicle, characterized in that: include: A cylinder body (1), wherein a piston chamber (11) is formed in the cylinder body (1); a piston (2), the piston (2) being received in the piston chamber (11) and dividing the piston chamber (11) into an upper chamber (111) and a lower chamber (112), the piston (2) being capable of selectively connecting the upper chamber (111) with the lower chamber (112); A piston rod (3), at least a portion of which is accommodated in the piston cavity (11), the piston rod (3) is connected to the piston (2), and a cooling cavity (31) is formed inside the piston rod (3), wherein the cooling cavity (31) is suitable for accommodating a cooling medium.

2. The vibration damping assembly for a vehicle according to claim 1, characterized in that: The piston rod (3) comprises: Body segment(32); A matching section (33) is provided at one end of the main body section, and the piston (2) is sleeved on the outer periphery of the matching section (33); wherein The cooling cavity (31) is formed in the main body section (32) and / or the matching section (33).

3. The vibration damping assembly for a vehicle according to claim 2, characterized in that: At least a portion of the outer surface of the body section (32) is formed with protrusions (321) and / or recesses (322).

4. The vibration damping assembly for a vehicle according to claim 3, characterized in that: The protrusion (321) or the recess (322) surrounds the outer surface of the body segment (32) or extends along the generatrix direction of the body segment (32).

5. The vibration damping assembly for a vehicle according to claim 4, characterized in that: The protrusion (321) or the recess (322) is configured in a ring or spiral shape surrounding the body segment (32).

6. The vibration damping assembly for a vehicle according to claim 2, characterized in that: Also includes: a mounting seat (4), the mounting seat (4) being connected to the other end of the body section (32); An elastic member is supported between the mounting seat (4) and the cylinder body (1).

7. The vibration damping assembly for a vehicle according to claim 6, characterized in that: The elastic member is constructed as a coil spring (5), one end of which is supported on the mounting seat (4); a support seat (12) is formed on the outer periphery of the cylinder body (1), and the other end of the coil spring (5) is supported on the support seat (12).

8. The vibration damping assembly for a vehicle according to claim 6, characterized in that: Also includes: A buffer block (6) is provided on a side of the mounting seat (4) facing the cylinder body (1), and the buffer block (6) is constructed as a flexible member.

9. The vibration damping assembly for a vehicle according to any one of claims 1 to 8, characterized in that: A valve hole communicating with the upper cavity (111) and the lower cavity (112) is formed on the piston (2), and a valve plate is provided in the valve hole for selectively opening or closing the valve hole.

10. A vehicle, characterized in that: The vibration damping assembly (100) comprises the vibration damping assembly (100) according to any one of claims 1 to 9.

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