Shock absorber and vehicle

Abstract

This application relates to the field of vehicle chassis technology, and provides a shock absorber and a vehicle. The shock absorber includes: a shock absorber body, comprising an outer cylinder and an inner cylinder disposed inside the outer cylinder; a damping body connected to the shock absorber body; an accumulator, at least one of the accumulators disposed on the damping body; and two control valves disposed on the damping body, the two control valves respectively connected to the inner cavity of the outer cylinder and the inner cavity of the inner cylinder through oil passages within the damping body, and each control valve connected to one of the accumulators through an oil passage within the damping body. This achieves an integrated arrangement of the accumulator, control valves, and shock absorber body, reducing the space requirements for layout.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, and more particularly to a shock absorber and a vehicle. Background Technology

[0002] The suspension is a device that transmits the interaction forces between the vehicle body and the ground. It transmits the forces and torques fed back from the road surface, dampens wheel vibrations, mitigates impacts, improves the driver's driving experience, and enables the vehicle to obtain ideal motion characteristics and stable driving ability. Therefore, the suspension is a key component affecting vehicle driving performance.

[0003] As an important component of the suspension, the damper of a conventional shock absorber has a fixed damping coefficient and cannot be dynamically adjusted according to driving conditions and driver needs. Therefore, adjustable shock absorbers have emerged. By adding structures such as accumulators and solenoid valves, it is possible to select the appropriate damping coefficient according to actual needs. However, the structure of the accumulator and solenoid valve poses a significant challenge to the layout space, and the arrangement of the oil circuits between them undoubtedly further increases the space requirements. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a shock absorber and vehicle, which integrates the accumulator, control valve and shock absorber body through the oil circuit in the damping body, so as to facilitate installation, eliminate the need for external pipelines and reduce the requirement for installation space.

[0005] The first aspect of this application provides a vibration damper, comprising: The shock absorber body includes an outer cylinder and an inner cylinder disposed inside the outer cylinder; The damping body is connected to the shock absorber body; Energy storage device, at least one of the energy storage devices is provided on the damping body; The damping body is provided with two control valves. The two control valves are respectively connected to the inner cavity of the outer cylinder and the inner cavity of the inner cylinder through the oil passage in the damping body, and each control valve is connected to an accumulator through the oil passage in the damping body.

[0006] The vibration damper provided in this application embodiment has a damping body connected to the main body of the vibration damper. The accumulator and control valve are both set on the damping body, and the accumulator, control valve and vibration damper main body are connected through the oil circuit inside the damping body. This realizes the integrated setting of the accumulator, control valve and vibration damper main body, which can eliminate the need for external pipelines, facilitate installation and reduce the space requirements.

[0007] Furthermore, since the damper body and the damping body are connected, the relative positions of the damper body and the damping body can be selected according to the characteristics of the space during assembly, so that the control valve and the accumulator can be arranged in the space of the damper body in the circumferential and axial directions, thereby enabling the damper to better adapt to the arrangement space. In some embodiments, the damping body is provided with an inner groove and an outer groove separated by a partition ring. The outer groove is connected to the inner cavity of the outer cylinder, and the inner groove is connected to the inner cavity of the inner cylinder. The outer cylinder is connected to the damping body, and the inner cylinder is inserted into the partition ring and abuts against the bottom wall of the outer groove or the inner groove.

[0008] The inner and outer grooves are separated by a partition ring. The inner cylinder is inserted into the partition ring and abuts against the bottom wall of the outer or inner groove. In this way, the damping body can be used to support and limit the inner cylinder, which facilitates the installation of the inner cylinder and improves its stability. It also reduces the axial length of the damper that would be increased by the damping body.

[0009] In some embodiments, the accumulator and the control valve are arranged opposite each other in the circumferential direction of the damper body.

[0010] The accumulator and control valve are spaced apart and opposite to each other in the circumferential direction of the damper body. This allows the accumulator to have a certain amount of space on both sides of the damper body in the circumferential direction to avoid other structures, while improving the weight balance of the damper in the radial direction of the damper body.

[0011] In some embodiments, the energy accumulator is provided, and the damping body has two valve chambers arranged in parallel, with a control valve installed in each valve chamber; The oil passage connecting the accumulator and the control valve extends along the depth direction of the valve chamber and connects the two valve chambers.

[0012] Two control valves share a single accumulator, reducing the number of accumulators and simplifying the vibration damper's structure. The accumulator and the two control valves are positioned opposite each other, with the oil passage connecting them extending along the depth of the valve chamber. This shortens the oil passage length and, since the oil passage connects both valve chambers simultaneously, reduces the number of oil passages, thus facilitating machining. Furthermore, the straight-line design of the oil passage ensures smoother oil flow and reduces flow obstruction.

[0013] In some embodiments, the energy storage device is axially inclined relative to the damper body.

[0014] The accumulator is axially inclined relative to the damper body, which reduces the space occupied by the damper body in the radial direction of the damper body where the accumulator is located, thus allowing the accumulator to avoid other structures.

[0015] In some embodiments, the damping body is provided with a first oil circuit corresponding to each of the control valves. The first oil circuit includes a first channel and a second channel that are connected to each other. One end of the second channel is connected to the inner cavity of the outer cylinder or the inner cavity of the inner cylinder, and the other end is connected to the control valve. The first channel is used to connect to the oil pump. The damping body is also provided with a mounting hole that connects to the first channel; The vibration damper also includes a switching valve, which is installed in the mounting hole and is used to open or close the first channel.

[0016] When the switching valve closes the first channel, the oil inside the shock absorber body and damping body is sealed off, preventing oil leakage. When the switching valve opens the first channel, the oil inside the shock absorber can be connected to the oil pump through the pipeline. Thus, the switching valve can close the first channel when disassembling the shock absorber, preventing oil leakage from the shock absorber.

[0017] In some embodiments, the damping body is provided with an oil port that connects to its internal oil passage, and an oil pipe joint is installed at the oil port for connecting an oil pump.

[0018] The oil passage within the aforementioned damping body is connected to an oil pump via an oil pipe joint. This allows the pump to supply oil to the damping body, thereby providing the driving force. The oil pipe joint facilitates the connection between the damping body and the oil pipe.

[0019] In some embodiments, in the circumferential direction of the damper body, both of the oil pipe joints are located between the accumulator and the control valve, and the two oil pipe joints are arranged opposite to each other.

[0020] The oil pipe joint can be located in the space between the accumulator and the control valve in the circumferential direction of the shock absorber body, and the two oil pipe joints can also be set opposite each other. In this way, the oil pipe joint, accumulator, oil pipe joint and control valve are set in sequence in the circumferential direction of the shock absorber body. At this time, the oil circuit connecting the control valve and the accumulator can be set between the oil circuit connecting the oil pipe joint and the control valve to avoid the oil circuit crossing. This helps to shorten the length of the oil circuit in the damping body, facilitates the processing of the oil circuit, and reduces the amount of oil injected into the shock absorber.

[0021] In some embodiments, a wire harness bracket is provided on the damping body; And / or, the damping body is provided with an oil injection hole that connects to its internal oil passage, and an oil nozzle valve is provided at the oil injection hole.

[0022] The damping body can also serve as a carrier for the wiring harness support, thereby providing a constrained position for the wiring harness around the damper through the wiring harness support.

[0023] The oil injection hole and oil nozzle valve allow for vacuuming and oil filling of the damping body and shock absorber body.

[0024] A second aspect of this application provides a vehicle including a shock absorber as described in any of the preceding claims. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the vibration damper provided in the embodiments of this application; Figure 2 for Figure 1 The diagram shows the disassembly of the vibration damper; Figure 3 for Figure 1 A cross-sectional schematic diagram of the vibration damper shown; Figure 4 for Figure 1 A side view of the damping body of the shock absorber shown; Figure 5 for Figure 4 Schematic sectional view along the middle AA direction; Figure 6 for Figure 4 Cross-sectional view along the middle BB direction; Figure 7 for Figure 1 A top view of the damping body of the shock absorber shown; Figure 8 for Figure 7 Cross-sectional view along the CC direction.

[0028] Among them, 1. Shock absorber body; 11. Outer cylinder; 12. Inner cylinder; 13. Piston; 14. Piston rod; 2. Damping body; 2a. Inner groove; 2b. Outer groove; 21. First oil passage; 22. Second oil passage; 23. Mounting hole; 24. Valve chamber; 25. Separator ring; 26. Mounting cavity; 3. Energy accumulator; 4. Control valve; 5. Oil pipe joint. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0031] As an important component of the vehicle's suspension, the shock absorber is a conventional shock absorber with a fixed damping coefficient, which cannot be dynamically adjusted according to driving conditions and driver needs. Therefore, adjustable shock absorbers have emerged. By adding accumulators, solenoid valves, electro-hydraulic pumps, etc., the shock absorber's internal oil pressure is changed, which in turn causes the shock absorber's piston rod to generate an active force. This allows the vehicle to maintain its body shape on uneven roads and keep the vehicle with zero body roll when cornering, thus balancing the vehicle's comfort and handling characteristics.

[0032] However, the inclusion of numerous components such as solenoid valves and accumulators poses a significant challenge to the layout space, and the interconnection of oil circuits further increases the space requirements.

[0033] Based on this, some embodiments of this application provide a vibration damper that integrates an accumulator and a solenoid valve into a damping body connected to the vibration damper body and connected through an oil circuit inside the damping body, thereby achieving an integrated arrangement that facilitates installation, reduces piping, and lowers the space requirements for installation.

[0034] Reference Figures 1 to 8 Some embodiments of this application provide a vibration damper, including a vibration damper body 1, a damping body 2, an accumulator 3, and a control valve 4.

[0035] The aforementioned shock absorber body 1 includes an outer cylinder 11 and an inner cylinder 12 disposed inside the outer cylinder 11. The inner cavity of the inner cylinder 12 is used to accommodate a piston 13, which is movably disposed within the inner cavity of the inner cylinder 12, dividing the inner cavity of the inner cylinder 12 into a tension chamber on the piston rod 14 side and a compression chamber away from the piston rod 14.

[0036] The aforementioned damping body 2 is connected to the shock absorber body 1. An oil passage is provided inside the damping body 2, connecting the inner cavity of the outer cylinder 11 and the inner cavity of the inner cylinder 12. Both the outer cylinder 11 and the inner cylinder 12 can be connected to the damping body 2.

[0037] The aforementioned accumulator 3 and control valve 4 are both mounted on the damping body 2, and the damping body 2 has at least one accumulator 3 and two control valves 4. The two control valves 4 are respectively connected to the inner cavity of the outer cylinder 11 and the inner cavity of the inner cylinder 12 through the oil passage in the damping body 2, and each control valve 4 is connected to one accumulator 3 through the oil passage in the damping body 2.

[0038] In other words, the connection between the accumulator 3, the control valve 4 and the damper body 1 is achieved through the oil circuit inside the damping body 2, thus eliminating the need for external connecting pipelines and realizing the integrated setup of the accumulator 3, the control valve 4 and the damper body 1.

[0039] Among them, control valve 4 can be selected as a solenoid valve, and the damping of the shock absorber can be adjusted by controlling the solenoid valve. Furthermore, the solenoid valve is selected as a solenoid valve with an integrated check valve.

[0040] The vibration damper provided in this application embodiment has a damping body 2 connected to the vibration damper body 1. The accumulator 3 and the control valve 4 are both set on the damping body 2, and the accumulator 3, the control valve 4 and the vibration damper body 1 are connected through the internal oil circuit of the damping body 2. This realizes the integrated setting of the accumulator 3, the control valve 4 and the vibration damper body 1, which can eliminate the need for external pipelines, facilitate installation, and reduce the space requirements for layout.

[0041] Furthermore, since the damper body 1 and the damping body 2 are connected, the relative positions of the damper body 1 and the damping body 2 can be selected according to the characteristics of the space during assembly, so that the control valve 4 and the accumulator 3 can be arranged in the space of the damper body 1 in the circumferential and axial directions, thereby enabling the damper to better adapt to the arrangement space.

[0042] In some embodiments, referring to 3, the damping body 2 is provided with an inner groove 2a and an outer groove 2b separated by a partition ring 25. The outer groove 2b is connected to the inner cavity of the outer cylinder 11, and the inner groove 2a is connected to the inner cavity of the inner cylinder 12. The outer cylinder 11 is connected to the damping body 2, and the inner cylinder 12 is inserted into the partition ring 25 and abuts against the bottom wall of the outer groove 2b or the inner groove 2a.

[0043] Since the inner groove 2a and the outer groove 2b are separated by the partition ring 25, the inner cylinder 12 is inserted into the partition ring 25 and abuts against the bottom wall of the outer groove 2b or the inner groove 2a. In this way, the damping body 2 can be used to support and limit the inner cylinder 12, which facilitates the installation of the inner cylinder 12 and improves the stability of the inner cylinder 12. Moreover, it can reduce the axial length of the damper increased by the setting of the damping body 2.

[0044] It should be noted that the outer cylinder 11 of the aforementioned shock absorber body 1 can be welded to the damping body 2, resulting in high connection strength and good sealing. Alternatively, the outer cylinder 11 can be screwed to the damping body 2, allowing for detachable connection between the outer cylinder 11 and the damping body 2, facilitating subsequent disassembly and maintenance.

[0045] For example, the inner cylinder 12 and the partition ring 25 can be welded together, resulting in high connection strength and good sealing performance. In this case, the inner cylinder 12 can be configured such that the partition ring 25 extends into the inner cylinder 12, or the inner cylinder 12 is inserted into the inner groove 2a. Alternatively, a sealing ring can be provided between the inner cylinder 12 and the partition ring 25. The sealing ring is located on the outside of the inner cylinder 12, and the inner cylinder 12 can be inserted into the inner groove 2a, where the sealing ring provides a seal between the inner cylinder 12 and the partition ring 25. Alternatively, a sealing ring can be provided at the end of the inner cylinder 12, and the inner cylinder 12 is inserted into the inner groove 2a, with the sealing ring pressing against the end of the inner cylinder 12 and the bottom wall of the inner groove 2a. Or, the partition ring 25 can be inserted into the inner cylinder 12, in which case the sealing ring is fitted over the partition ring 25.

[0046] Furthermore, the outer cylinder 11 is inserted into the outer groove 2b, meaning that part of the outer cylinder 11 is located within the outer groove 2b. This allows the outer groove 2b to provide certain limits and positioning for the outer cylinder 11, improving its stability. In this case, the outer cylinder 11 can be either welded to the damping body 2 or connected by screws. When the outer cylinder 11 and the damping body 2 are connected by screws, a sealing ring can be installed on the outside of the outer cylinder 11, pressing against the groove sidewall of the outer groove 2b. Alternatively, a sealing ring can be installed at the end of the outer cylinder 11, pressing against the end of the outer cylinder 11 and the bottom wall of the outer groove 2b.

[0047] In some embodiments, refer to Figure 1 and Figure 2 The accumulator 3 and the control valve 4 are arranged opposite each other in the circumferential direction of the damper body 1.

[0048] The accumulator 3 and the control valve 4 are spaced apart and opposite to each other on both sides of the circumferential upward of the damper body 1, so that the accumulator 3 has a certain space on both sides of the damper body 1 to avoid other structures, while improving the weight balance of the damper in the radial direction of the damper body 1.

[0049] In some embodiments, refer to Figure 1 and Figure 2 The damping body 2 is provided with an oil port that connects to its internal oil circuit. An oil pipe joint 5 is installed at the oil port and is used to connect an oil pump (not shown in the figure).

[0050] Understandably, the oil circuit inside the damping body 2 is connected to an oil pump through an oil pipe joint 5, so that oil can be delivered into the damping body 2 by the addition of the oil pump, and thus the oil pump provides the driving force.

[0051] For example, refer to Figure 1 The aforementioned oil pipe joint 5 can be located in the space between the accumulator 3 and the control valve 4 in the circumferential direction of the damper body 1, and the two oil pipe joints 5 can also be arranged opposite each other. In this way, the oil pipe joint 5, the accumulator 3, the oil pipe joint 5 and the control valve 4 are arranged in sequence in the circumferential direction of the damper body 1. At this time, the oil circuit connecting the accumulator 3 and the control valve 4 can be set between the two oil circuits connecting the oil pipe joint 5 and the control valve 4 to avoid the oil circuit crossing. This is beneficial to shorten the length of the oil circuit in the damping body 2, facilitates the processing of the oil circuit, and reduces the amount of oil injected into the damper.

[0052] For example, the oil circuit connecting the oil pipe joint 5 and the control valve 4 can be defined as the first oil circuit 21, which connects to the inner cavity of the outer cylinder 11 or the inner cavity of the inner cylinder 12. The oil circuit connecting the accumulator 3 and the control valve 4 can be defined as the second oil circuit 22, which can be set between the two first oil circuits 21 to avoid the first oil circuit 21 and the second oil circuit 22 from intersecting.

[0053] In some embodiments, refer to Figure 1 and Figure 2 The accumulator 3 is axially inclined relative to the damper body 1.

[0054] Understandably, the accumulator 3 is axially inclined relative to the damper body 1, which reduces the space occupied by the damper body 2 in the radial direction of the damper body 1 where the accumulator 3 is located, thereby allowing the accumulator 3 to avoid other structures.

[0055] Specifically, the aforementioned accumulator 3 is inclined downwards in the vertical direction, so that after the vibration damper is installed, the accumulator 3 avoids the structure above it. Of course, in other embodiments, the aforementioned accumulator 3 can also be inclined upwards to avoid the structure below it. Or, if space permits, the accumulator 3 can be installed horizontally.

[0056] In some embodiments, refer to Figure 1 and Figure 2 The accumulator 3 and two control valves 4 are arranged opposite each other in the circumferential direction of the damper body 1. There is one accumulator 3, and both control valves 4 are connected to the accumulator 3 via oil circuits.

[0057] Understandably, the two control valves 4 share one accumulator 3, which reduces the number of accumulators 3 and simplifies the structure of the vibration damper. Furthermore, the accumulator 3 and the two control valves 4 are positioned opposite each other, allowing them to be circumferentially separated in the vibration damper body 1. This not only ensures a more uniform weight distribution and improves the radial balance of the vibration damper body 1, but also frees up space between the accumulator 3 and the control valves 4 to avoid interference with other structures.

[0058] The phrase "the accumulator 3 and the control valve 4 are arranged opposite each other around the main body of the damper" means that the accumulator 3 and the control valve 4 are spaced apart and opposite each other around the main body of the damper. This allows the accumulator 3 to have a certain amount of space on both sides of the main body of the damper to avoid other structures.

[0059] For example, refer to Figure 2 and Figure 5 The damping body 2 has two valve chambers 24 arranged side by side, and a control valve 4 is installed in each valve chamber 24. The oil passage connecting the accumulator 3 and the control valve 4 extends along the depth direction of the valve chamber 24 and connects the two valve chambers 24.

[0060] Thus, the accumulator 3 and the control valve 4 are positioned opposite each other, and the oil passage connecting the accumulator 3 and the control valve 4 extends along the depth direction of the valve chamber 24. This shortens the length of the oil passage, and since the oil passage connects two valve chambers 24 simultaneously, the number of oil passages can be reduced, which facilitates the machining of the oil passage. Furthermore, the straight design of the oil passage makes the flow of oil smoother and reduces flow resistance.

[0061] Furthermore, the two valve chambers 24 are arranged side by side, so when machining the damping body 2, only the position of the tool needs to be adjusted, without adjusting the position of the damping body 2.

[0062] In some embodiments, refer to Figure 1 and Figure 5 The aforementioned damping body 2 is provided with an installation cavity 26 into which the energy storage device 3 extends at least partially.

[0063] The mounting cavity 26 is connected to the oil circuit connected to the control valve 4. Thus, the mounting cavity 26 provides space for positioning and limiting of the accumulator 3, which facilitates the installation of the accumulator 3. In addition, the mounting cavity 26 can also provide a certain degree of protection for the accumulator 3 to prevent it from being bumped or knocked.

[0064] The accumulator 3 can be either welded to the damping body 2 or connected by screws; no specific restrictions are imposed here.

[0065] In some embodiments, refer to Figure 7 and Figure 8 The damper also includes a switching valve (not shown in the figure). A first oil passage 21 is provided on the damping body 2 corresponding to each control valve 4. The first oil passage 21 includes a first channel and a second channel that are connected. The second channel connects to the inner cavity of the outer cylinder 11 or the inner cavity of the inner cylinder 12, and the other end connects to the control valve 4. The first channel is used to connect to the oil pump. The damping body 2 is also provided with a mounting hole 23 connecting to the first channel. The switching valve is installed in the mounting hole 23 and is used to open or close the first channel.

[0066] Understandably, when the switching valve closes the first channel, the oil inside the shock absorber body 1 and the damping body 2 is sealed off, preventing oil leakage. Conversely, when the switching valve opens the first channel, the oil inside the shock absorber can be connected to the oil pump via pipeline. Thus, the switching valve can close the first channel when disassembling the shock absorber, preventing oil leakage from the shock absorber.

[0067] It should be noted that the opening and closing of the switching valve can be set to electric or manual operation. For example, the switching valve is threaded to the damping body 2, and the oil port is opened or closed by turning the switching valve to move in the mounting hole.

[0068] It should be noted that the aforementioned switching valve can also be installed on the oil pipe joint 5, thus eliminating the need to machine the mounting hole 23 on the damping body 2.

[0069] In some embodiments, a wire harness bracket is provided on the damping body 2. That is, the damping body 2 can also serve as a carrier for the wire harness bracket, thereby providing a constrained position for the wire harness around the vibration damper through the wire harness bracket. The structure and fixing position of the wire harness bracket are not specifically limited here and can be adjusted according to actual needs.

[0070] For example, the accumulator 3 and the control valve 4 are arranged opposite each other in the circumferential direction of the damper body 1, so that the wiring harness bracket can be located in the space between the accumulator 3 and the control valve 4 in the circumferential direction of the damper body 1, making full use of the space.

[0071] The wire harness bracket can be fixed to the damping body 2 by welding or screwing. Preferably, the wire harness bracket is fixed by screwing, which facilitates disassembly of the wire harness bracket during subsequent maintenance.

[0072] In some embodiments, the damping body 2 is provided with an oil injection hole that connects to its internal oil passage, and an oil nozzle valve is provided at the oil injection hole.

[0073] Understandably, the installation of the oil injection hole and the oil nozzle valve allows for the vacuuming of the damping body 2 and the filling of oil into the shock absorber body 1.

[0074] For example, refer to Figures 1 to 8 A preferred embodiment of a vibration damper is given.

[0075] The vibration damper includes a damper body 1, a damping body 2, an accumulator 3, and a control valve 4.

[0076] The main body 1 of the shock absorber includes an outer cylinder 11 and an inner cylinder 12 disposed inside the outer cylinder 11.

[0077] The damping body 2 is provided with an outer groove 2b and an inner groove 2a separated by a partition ring 25. The outer groove 2b connects to the inner cavity of the outer cylinder 11, and the inner groove 2a connects to the inner cavity of the inner cylinder 12. The outer cylinder 11 is connected to the damping body 2, and the inner cylinder 12 is inserted into the partition ring 25 and abuts against the bottom wall of the outer groove 2b. The outer cylinder 11 is welded to the damping body 2 and extends into the outer groove 2b. The inner cylinder 12 is welded to the partition ring 25.

[0078] Both the accumulator 3 and the control valve 4 are installed on the damping body 2, and the damping body 2 has one accumulator 3 and two control valves 4.

[0079] The damping body 2 is provided with a first oil passage 21, wherein the two first oil passages 21 correspond to two control valves 4 respectively. One first oil passage 21 connects one control valve 4 and the outer tank 2b, and the other first oil passage 21 connects another control valve 4 and the inner tank 2a.

[0080] The damping body 2 is equipped with a second oil passage 22, and the accumulator 3 is connected to two control valves 4 through the second oil passage 22. At this time, there can be only one second oil passage 22, that is, one accumulator 3 corresponds to two control valves 4.

[0081] The piston 13 of the shock absorber body 1 is located in the inner cavity of the inner cylinder 12. When the piston 13 is pressed down, the oil enters the accumulator 3 through the control valve 4. The oil in the accumulator 3 can also enter the inner cavity of the inner cylinder 12 through the control valve 4, thereby moving the piston rod 14 upward.

[0082] The accumulator 3 and the control valve 4 are arranged opposite each other in the circumferential direction of the damper body 1.

[0083] The accumulator 3 is axially inclined relative to the damper body 1.

[0084] The damping body 2 has two valve chambers 24 arranged side by side, and a control valve 4 is installed in each valve chamber 24. The second oil passage 22 extends along the depth direction of the valve chamber 24 and connects the two valve chambers 24.

[0085] Each first oil passage 21 on the damping body 2 has an oil port, and an oil pipe connector 5 is installed at the oil port for connecting the oil pump. The oil pipe connector 5 is located in the space between the accumulator 3 and the control valve 4 around the shock absorber body 1, and two oil pipe connectors 5 can also be arranged opposite each other. In this way, the second oil passage 22 can be set between the two first oil passages 21.

[0086] The shock absorber also includes a switching valve. The aforementioned first oil circuit 21 includes a first channel and a second channel connected together. The second channel connects to either the inner groove 2a or the outer groove 2b, and its other end connects to the control valve 4. The first channel connects to the oil pump. The damping body 2 also has a mounting hole 23 connecting to the first channel. The switching valve is mounted in the mounting hole 23 and is used to open or close the first channel.

[0087] Other embodiments of this application provide a vehicle that includes a shock absorber as described in any of the above embodiments, and thus has the beneficial effects of the shock absorber of any of the above embodiments, which will not be repeated here.

[0088] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0089] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibration damper, characterized in that, include: The damper body (1) includes an outer cylinder (11) and an inner cylinder (12) disposed inside the outer cylinder (11). Damping body (2) is connected to the damper body (1); Energy accumulator (3), at least one of the energy accumulators (3) is provided on the damping body (2); Control valve (4), two control valves (4) are provided on the damping body (2), the two control valves (4) are respectively connected to the inner cavity of the outer cylinder (11) and the inner cavity of the inner cylinder (12) through the oil circuit in the damping body (2), and each control valve (4) is connected to an accumulator (3) through the oil circuit in the damping body (2).

2. The vibration damper according to claim 1, characterized in that, The damping body (2) is provided with an inner groove (2a) and an outer groove (2b) separated by a partition ring (25). The outer groove (2b) is connected to the inner cavity of the outer cylinder (11), and the inner groove (2a) is connected to the inner cavity of the inner cylinder (12). The outer cylinder (11) is connected to the damping body (2), and the inner cylinder (12) is inserted into the partition ring (25) and abuts against the bottom wall of the outer groove (2b) or the inner groove (2a).

3. The vibration damper according to claim 1, characterized in that, The accumulator (3) and the control valve (4) are arranged opposite each other in the circumferential direction of the damper body (1).

4. The vibration damper according to claim 3, characterized in that, The energy storage device (3) is provided, and the damping body (2) has two valve chambers (24) arranged in parallel, and a control valve (4) is installed in each valve chamber (24). The oil passage connecting the accumulator (3) and the control valve (4) extends along the depth direction of the valve chamber (24) and connects the two valve chambers (24).

5. The vibration damper according to claim 1, characterized in that, The energy storage device (3) is axially inclined relative to the damper body (1).

6. The vibration damper according to claim 1, characterized in that, The damping body (2) is provided with a first oil passage (21) corresponding to each of the control valves (4). The first oil passage (21) includes a first channel and a second channel that are connected. One end of the second channel is connected to the inner cavity of the outer cylinder (11) or the inner cavity of the inner cylinder (12), and the other end is connected to the control valve (4). The first channel is used to connect to the oil pump. The damping body (2) is also provided with a mounting hole (23) that connects to the first channel; The shock absorber also includes a switching valve, which is installed in the mounting hole (23) and is used to open or close the first channel.

7. The vibration damper according to claim 1, characterized in that, The damping body (2) is provided with an oil port that connects to its internal oil circuit. An oil pipe connector (5) is installed at the oil port and is used to connect to an oil pump.

8. The vibration damper according to claim 7, characterized in that, In the circumferential direction of the damper body (1), the two oil pipe joints (5) are located between the accumulator (3) and the control valve (4), and the two oil pipe joints (5) are arranged opposite to each other.

9. The vibration damper according to claim 1, characterized in that, A wire harness bracket is provided on the damping body (2); And / or, the damping body (2) is provided with an oil injection hole that connects to its internal oil circuit, and an oil nozzle valve is provided at the oil injection hole.

10. A vehicle, characterized in that, Includes the vibration damper as described in any one of claims 1 to 9.

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