Shock absorber and vehicle having same

Abstract

A shock absorber (1) and a vehicle (2) having the same. The shock absorber (1) comprises a cylinder (100), a piston (200), a flow control valve (300), a valve core (400), and a pilot valve (500). The piston (200) is movably mounted in the cylinder (100), and the piston (200) divides the cylinder (100) into a compression chamber (101) and a rebound chamber (102). The flow control valve (300) is mounted on the piston (200) and communicates with the compression chamber (101) and the rebound chamber (102) separately. The valve core (400) is movably mounted on the piston (200). The pilot valve (500) is connected to the valve core (400). When the valve core (400) moves, the flow control valve (300) operates in response to the pilot valve (500). ), and the shock absorber (1) is provided with a first air passage (410) and a second air passage (420), the first air passage (410) communicates with spaces on both sides of the moving direction of the valve core (400) and communicates with the rebound chamber (102), the second air passage (420) communicates with spaces on both sides of the moving direction of the valve core (400) and is provided in the valve core (400), a part of the first air passage (410) is provided in the valve core (400), and the other part of the first air passage (410) is provided in the pilot valve (500). The shock absorber (1) has the advantages of high integration, few parts, easy assembly, and low machining costs.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to Chinese Patent Application No. 202211687311.0, entitled "SHOCK ABSORBER AND VEHICLE HAVING SAME," filed on December 27, 2022. The entire contents of the above application are incorporated herein by reference.

[0002] The present disclosure relates to the technical field of shock absorbers, and more particularly to shock absorbers and vehicles having the same. [Background technology]

[0003] In related art, a car shock absorber mainly includes a spring, a piston, a piston rod, and a cylinder. When a car passes over an uneven road, the spring vibrates back and forth after absorbing the vibration, and the main function of the shock absorber is to suppress the back and forth vibration of the spring. However, if the shock absorber is too soft, the car body will vibrate up and down. If the shock absorber is too hard, excessive resistance may be generated.

[0004] In related technologies, shock absorbers are typically installed after their damping is adjusted. However, because the road surfaces on which automobiles travel are complex, shock absorbers are required to be relatively stiff and provide a relatively large damping force to prevent the vehicle body from becoming unstable due to wind resistance when traveling at high speeds. When an automobile travels on uneven roads, shock absorbers are required to be relatively soft and provide a relatively small damping force to completely absorb vibrations caused by the uneven road surface. Although shock absorber damping can be adjusted in related technologies, shock absorbers have many parts, low integration, and low space utilization, which results in problems such as large shock absorber volume and difficulty in assembly. Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the related art. Therefore, an object of the present disclosure is to provide a shock absorber having advantages of high integration, few parts, easy assembly, and low machining costs.

[0006] The present disclosure further provides a vehicle having the shock absorber described above.

[0007] According to a first aspect, an embodiment of the present disclosure provides a shock absorber including a cylinder, a piston, a flow control valve, a valve core, and a pilot valve. The piston is movably disposed in the cylinder, and the piston divides the interior of the cylinder into a compression chamber and a rebound chamber. The flow control valve is disposed on the piston and communicates with the compression chamber and the rebound chamber, respectively. The valve core is movably disposed on the piston. The pilot valve is connected to the valve core. As the valve core moves, the flow control valve is controlled by the pilot valve to adjust the flow rate of fluid between the compression chamber and the rebound chamber. The shock absorber includes a first air passage and a second air passage, the first air passage communicating with spaces on both sides of the movement direction of the valve core and communicating with the rebound chamber, and the second air passage communicating with spaces on both sides of the movement direction of the valve core, a portion of the first air passage configured in the valve core, another portion configured in the pilot valve, and the second air passage configured in the valve core.

[0008] The shock absorber according to the embodiments of the present disclosure has the advantages of fewer parts, higher integration, higher space utilization, easier assembly, and lower machining costs.

[0009] According to some embodiments of the present disclosure, the shock absorber further includes a first one-way valve and a second one-way valve. The first one-way valve is disposed in the first air passage to allow gas to flow only from the first air passage in a direction toward the flow control valve. The second one-way valve is disposed in the second air passage to allow gas to flow only from the second air passage in a direction away from the flow control valve.

[0010] According to some embodiments of the present disclosure, the first one-way valve includes a first path member, a first closing member, and a first elastic return member. The first path member is attached to a first air passage to provide a first path. The first closing member is movably attached to the first air passage and is located at an end of the first path member facing the flow rate control valve. The first elastic return member is attached to the first air passage so that two ends thereof come into contact with the inner wall surface of the first air passage and the first closing member, respectively, so that the first closing member comes into contact with the first path member and closes the first path.

[0011] According to some embodiments of the present disclosure, a first support ring is provided on the inner wall surface of the first air passage, and the first support ring is positioned at the end of the first closure member facing the flow control valve, and the two ends of the first return elastic member rest against the first support ring and the first closure member, respectively.

[0012] According to some embodiments of the present disclosure, the second one-way valve includes a second path member, a second closing member, and a second elastic return member. The second path member is attached to the second air passage to provide a second path. The second closing member is movably attached to the second air passage and is located at an end of the second path member facing the flow control valve. A second support ring is provided on the inner wall surface of the second air passage, and the second support ring is located at an end of the second closing member facing away from the second path member. The second elastic return member is attached to the second air passage and has two ends that contact the second path member and the second closing member, respectively, so that the second closing member contacts the second support ring and closes the second air passage.

[0013] According to some embodiments of the present disclosure, the portion of the first air passage configured in the valve core includes a first axial central segment, a first radial segment, and a first axial eccentric segment. The first axial central segment extends along the axial direction of the valve core, and a central axis of the first axial central segment coincides with the central axis of the valve core. The first radial segment extends along the radial direction of the valve core, and one end of the first radial segment communicates with an end of the first axial central segment opposite the flow control valve, and the other end of the first radial segment penetrates the outer circumferential surface of the valve core. The first axial eccentric segment extends along the axial direction of the valve core, and a central axis of the first axial eccentric segment does not coincide with the central axis of the valve core, and an end of the first axial eccentric segment adjacent to the flow control valve communicates with the first radial segment.

[0014] According to some embodiments of the present disclosure, the portion of the first air passage configured in the pilot valve includes a second axial central segment and a second radial segment. The second axial central segment extends along the axial direction of the pilot valve, with a central axis of the second axial central segment coinciding with the central axis of the pilot valve, and an end of the second axial central segment opposite the flow control valve communicates with the first axial central segment. The second radial segment extends along the radial direction of the pilot valve, with one end of the second radial segment communicating with an end of the second axial central segment adjacent to the flow control valve, and the other end of the second radial segment communicating with the rebound chamber.

[0015] According to some embodiments of the present disclosure, the second air passage includes a third axial eccentric segment, a third radial segment, and a third axial central segment. The third axial eccentric segment extends along the axial direction of the valve core, and the central axis of the third axial eccentric segment does not coincide with the central axis of the valve core. The third radial segment extends along the radial direction of the valve core, and one end of the third radial segment communicates with an end of the third axial eccentric segment opposite the flow control valve, and the other end of the third radial segment penetrates the outer circumferential surface of the valve core. The third axial central segment extends along the axial direction of the valve core, and the central axis of the third axial central segment coincides with the central axis of the valve core, and the end of the third axial central segment adjacent to the flow control valve communicates with the third radial segment.

[0016] According to some embodiments of the present disclosure, the shock absorber further includes a first elastic member and a second elastic member, which are respectively disposed on both sides of the valve core in the moving direction, and both the first elastic member and the second elastic member apply an elastic force to the valve core to stabilize the position of the valve core.

[0017] According to some embodiments of the present disclosure, the valve core has a first annular slot at an end facing the first elastic member, the first elastic member being a spring, and the first elastic member being inserted into the first annular slot, and the valve core has a second annular slot at an end facing the second elastic member, the second elastic member being a spring, and the second elastic member being inserted into the second annular slot.

[0018] According to some embodiments of the present disclosure, the first air passage communicates with the first annular slot, and the second annular slot surrounds and separates the first air passage from the first air passage, and the second air passage communicates with the second annular slot, and the first annular slot surrounds and separates the second air passage from the second air passage.

[0019] According to some embodiments of the present disclosure, the piston includes a piston rod and a piston valve body. The piston valve body divides the interior of the cylinder into a compression chamber and a rebound chamber. The piston valve body and the piston rod are connected by a valve body. A flow control valve is attached to the valve body. A pilot valve extends into the valve body to mate with the flow control valve.

[0020] According to some embodiments of the present disclosure, the valve body is provided with a third air passage and the side wall of the piston rod is provided with a fourth air passage, and the first air passage is sequentially connected to the rebound chamber via the third air passage and the fourth air passage.

[0021] According to some embodiments of the present disclosure, a first restricting boss is provided on the inner wall surface of the valve body, the first restricting boss is positioned between the flow regulating valve and the valve core, and surrounds the pilot valve to restrict the movement path of the pilot valve, and at least a portion of the third air path is configured in the first restricting boss.

[0022] According to some embodiments of the present disclosure, a first air passage passes through a portion of the pilot valve that extends into the valve body, one end of a third air passage passes through a side of the first restrictor boss facing the flow control valve, and the other end of the third air passage passes through an outer surface of the valve body.

[0023] According to some embodiments of the present disclosure, the shock absorber further includes a coil assembly and a hood body. The coil assembly is attached to the piston rod. The hood body is attached to the coil assembly, and the valve core is movably attached to the hood body. When the coil assembly is powered on, the valve core is magnetized, and the valve core and the valve body are attracted to each other.

[0024] According to some embodiments of the present disclosure, a second limiting protrusion is provided on the inner wall surface of the hood body, and a third limiting boss is provided on the outer wall surface of the valve core, and the second limiting protrusion and the third limiting boss do not come into contact with each other, thereby defining the farthest position of the valve core relative to the flow regulating valve.

[0025] According to some embodiments of the present disclosure, the shock absorber further includes a magnetic barrier ring attached to the piston rod, the magnetic barrier ring being positioned between the hood body and the valve body to separate the coil assembly and the valve body.

[0026] According to some embodiments of the present disclosure, the magnetic barrier ring has an alignment slot at the end facing the valve body, the alignment slot penetrating the inner circumferential surface of the magnetic barrier ring, and the valve body has an alignment protrusion at the end facing the magnetic barrier ring, the alignment protrusion being aligned with the alignment slot.

[0027] According to some embodiments of the present disclosure, the cross-sectional outer diameter of the locating protrusion gradually decreases in a direction closer to the magnetic barrier ring, and the cross-sectional area of ​​the locating slot gradually decreases in a direction away from the valve body.

[0028] According to some embodiments of the present disclosure, the end of the valve disc facing the valve core may be provided with a limiting slot into which the valve core may be inserted.

[0029] According to some embodiments of the present disclosure, the coil assembly includes a holder, a coil, a guide wire, and an insulating cover. The holder covers the hood body, and the outer wall of the holder is provided with a coil slot. The end of the holder facing away from the valve body is configured with a guide wire support, and the guide wire support is configured with a guide wire slot. The coil is wound in the coil slot. The guide wire is connected to the coil, and the guide wire is pulled out from the end of the holder facing away from the valve body through the guide wire slot. The insulating cover is attached to the guide wire support and seals and covers the guide wire slot.

[0030] According to some embodiments of the present disclosure, the coil assembly further includes a metal cap attached to an end of the holder facing away from the valve body and in contact with the hood body, the metal cap having a notch formed therein, and the guide wire mount being aligned with the notch.

[0031] According to some embodiments of the present disclosure, a flow regulating valve includes an overflow valve element and an overflow valve seat. The overflow valve element is movably attached to the valve element. The overflow valve seat is attached to the valve element and located at an end of the overflow valve element facing away from the pilot valve. The overflow valve seat is provided with a first flow path and a second flow path, each of which communicates with a compression chamber and a rebound chamber, respectively. The minimum cross-sectional area of ​​the first flow path is greater than the minimum cross-sectional area of ​​the second flow path. When the valve core moves, the overflow valve element is controlled to move by the pilot valve and opens and closes the first flow path using the overflow valve element.

[0032] According to some embodiments of the present disclosure, an overflow chamber communicating with the compression chamber is configured in the overflow valve seat, a first through-hole is provided at an end of the overflow valve seat facing the overflow valve body, a second through-hole is provided in a side wall of the overflow valve seat, the overflow chamber communicates with the rebound chamber via the first through-hole and the second through-hole, the cross-sectional area of ​​the first through-hole is larger than the cross-sectional area of ​​the second through-hole, the overflow chamber and the first through-hole form a first flow path, and the overflow chamber and the second through-hole form a second flow path. The overflow valve body opens and closes the first flow path by opening and closing the first through-hole.

[0033] According to some embodiments of the present disclosure, the overflow valve body has an annular slot at the end opposite the overflow valve seat, and the outer wall of the annular slot closes the first flow path upon contact with the overflow valve seat, and the outer wall of the annular slot opens the first flow path upon separation from the overflow valve seat.

[0034] According to some embodiments of the present disclosure, the shock absorber further includes a third elastic member, wherein a support portion is provided at an end of the overflow valve seat facing the overflow valve body, the third elastic member is a spring that surrounds the inner wall of the annular slot, and two ends of the third elastic member rest against the support portion and the bottom wall of the annular slot, respectively, and the third elastic member provides an elastic force to press the outer peripheral wall of the annular slot to separate from the overflow valve seat.

[0035] According to some embodiments of the present disclosure, a central chamber and an annular chamber are defined between the end of the overflow valve body facing away from the overflow valve seat and the valve body, and the annular chamber is disposed around the central chamber. The overflow valve body is provided with a third flow path and a fourth flow path, the third flow path communicating with the rebound chamber, the annular chamber, and the central chamber, respectively, and the fourth flow path communicating with the first flow path and the central chamber, respectively. A pilot valve extends into the central chamber and controls whether the central chamber is in communication with the third flow path.

[0036] According to some embodiments of the present disclosure, the overflow valve body has a first sealing annular base at an end facing away from the overflow valve seat, and the valve body has a second sealing annular base, one of the first sealing annular base and the second sealing annular base fitted inside the other, and the first sealing annular base and the second sealing annular base together separate the central chamber and the annular chamber.

[0037] According to some embodiments of the present disclosure, the third flow passage includes a radial flow passage, an axial central flow passage, and an axial eccentric flow passage. The radial flow passage extends radially along the overflow valve body and is connected to the rebound chamber. The axial central flow passage extends axially along the overflow valve body and is connected to the central chamber via the axial central flow passage. The axial eccentric flow passage extends axially along the overflow valve body and is connected to the annular chamber via the axial eccentric flow passage. The pilot valve extends into the central chamber to open and close the axial central flow passage.

[0038] According to some embodiments of the present disclosure, a second via hole is provided in the side wall of the valve body, the second via hole is connected to the rebound chamber, the inner surface of the valve body is provided with a flow path annular slot that is connected to the first via hole, the flow path annular slot is closed by the outer surface of the overflow valve body, and the third flow path is sequentially connected to the rebound chamber via the flow path annular slot and the second via hole.

[0039] According to some embodiments of the present disclosure, a shock absorber includes an insert. The insert is attached to the piston valve body and positioned at an end of the flow control valve facing away from the pilot valve. The insert is provided with a first insert passage and a second insert passage. The flow control valve communicates with the compression chamber via the first insert passage and the second insert passage. When fluid flows from the flow control valve to the compression chamber, the maximum flow velocity of the fluid in the first insert passage is greater than the maximum flow velocity of the fluid in the second insert passage. When fluid flows from the compression chamber to the flow control valve, the maximum flow velocity of the fluid in the second insert passage is greater than the maximum flow velocity of the fluid in the first insert passage.

[0040] According to some embodiments of the present disclosure, the first insert flow path includes a first perforation and a first restriction hole. The first perforation penetrates the insert, and one end of the first perforation communicates with the flow regulation valve. A first convex edge is provided on one side of the insert facing away from the flow regulation valve, the first convex edge surrounding the first perforation, and the first restriction hole is formed in the first convex edge, the cross-sectional area of ​​the first perforation is larger than the cross-sectional area of ​​the first restriction hole, and the other end of the first perforation communicates with the flow regulation valve through the first restriction hole. A first spring plate is provided on the end of the insert facing away from the flow regulation valve, and the first spring plate abuts the first convex edge to seal and cover the first perforation.

[0041] According to some embodiments of the present disclosure, the second insert flow path includes a second perforation and a second throttle hole. The second perforation penetrates the insert, and one end of the second perforation communicates with the compression chamber. A second convex edge is provided on one side of the insert facing the flow regulation valve, the second convex edge surrounding the second perforation, and the second throttle hole is formed in the second convex edge, and the cross-sectional area of ​​the second perforation is larger than the cross-sectional area of ​​the second throttle hole, and the other end of the second perforation communicates with the flow regulation valve through the second throttle hole. A second spring plate is provided on one side of the insert facing the flow regulation valve, and the second spring plate contacts the second convex edge to seal and cover the second perforation.

[0042] According to some embodiments of the present disclosure, the shock absorber further includes a compression valve plate and an adjustment seat. The compression valve plate rests against an end of the flow control valve opposite the insert. The adjustment seat is sandwiched between the compression valve plate and a second spring plate, and the inner diameter of the adjustment seat is larger than the inner diameter of the second spring plate.

[0043] According to some embodiments of the present disclosure, the shock absorber further includes a bottom valve. The cylinder includes an outer cylinder and an inner cylinder. The inner cylinder extends into the outer cylinder, and a liquid storage chamber is formed between the outer cylinder and the inner cylinder. A piston is movably disposed in the inner cylinder to divide the interior of the inner cylinder into a compression chamber and a rebound chamber. The bottom valve is attached to at least one of the inner cylinder and the outer cylinder, and is provided with a first one-way flow path and a second one-way flow path. Fluid in the compression chamber flows into the liquid storage chamber through the first one-way flow path, and fluid in the liquid storage chamber flows into the compression chamber through the second one-way flow path.

[0044] According to a second aspect, an embodiment of the present disclosure provides a vehicle including a shock absorber according to an embodiment of the first aspect of the present disclosure.

[0045] Additional aspects and advantages of the disclosure will be set forth in the description that follows, and in part will be apparent from the description, or may be learned by practice of the disclosure.

[0046] The foregoing and / or additional aspects and advantages of the present disclosure will become apparent and understandable in the following description of embodiments that proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0047] [Figure 1] 1 is a schematic structural diagram of a shock absorber according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a partial enlarged view of region A in FIG. [Figure 3] FIG. 2 is a partial enlarged view of region B in FIG. [Figure 4] 1 is a schematic structural diagram of a valve core of a shock absorber according to an embodiment of the present disclosure. FIG. [Figure 5] FIG. 10 is a schematic structural diagram of a valve core of a shock absorber according to an embodiment of the present disclosure at a different viewing angle. [Figure 6] FIG. 1 is a cross-sectional view of a valve core of a shock absorber according to an embodiment of the present disclosure. [Figure 7] FIG. 1 is a cross-sectional view of a pilot valve of a shock absorber according to an embodiment of the present disclosure. [Figure 8] 1 is a schematic structural diagram of a valve body of a shock absorber according to an embodiment of the present disclosure. [Figure 9] 1 is a cross-sectional view of a valve body of a shock absorber according to an embodiment of the present disclosure. [Figure 10] 1 is a cross-sectional view of a hood body of a shock absorber according to an embodiment of the present disclosure. [Figure 11] 1 is a schematic structural diagram of a holder of a shock absorber according to an embodiment of the present disclosure. [Figure 12] 1 is a schematic structural diagram of a metal cap of a shock absorber according to an embodiment of the present disclosure. [Figure 13] 1 is a schematic structural diagram of a magnetic barrier ring of a shock absorber according to an embodiment of the present disclosure. [Figure 14] 1 is a schematic structural diagram of an overflow valve seat of a shock absorber according to an embodiment of the present disclosure. [Figure 15] 1 is a schematic structural diagram of an overflow valve seat of a shock absorber according to an embodiment of the present disclosure at a different viewing angle; FIG. [Figure 16] FIG. 1 is a cross-sectional view of an overflow valve seat of a shock absorber according to an embodiment of the present disclosure. [Figure 17] 1 is a schematic structural diagram of an overflow valve body of a shock absorber according to an embodiment of the present disclosure. [Figure 18] 1 is a schematic structural diagram of an overflow valve body of a shock absorber according to an embodiment of the present disclosure at a different viewing angle. [Figure 19] 1 is a cross-sectional view of an overflow valve body of a shock absorber according to an embodiment of the present disclosure. [Figure 20] 1 is a schematic structural diagram of an insert for a shock absorber according to an embodiment of the present disclosure. [Figure 21] 1 is a schematic structural diagram of a shock absorber insert according to an embodiment of the present disclosure at a different viewing angle. [Figure 22] 1 is a schematic block diagram of a vehicle according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0048] DETAILED DESCRIPTION OF THE DISCLOSURE Embodiments of the present disclosure will now be described in detail, by way of example only, with reference to the accompanying drawings.

[0049] In describing the present disclosure, it should be understood that orientations or positional relationships indicated by terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, are orientations or positional relationships shown in the accompanying drawings, and are used solely for ease and brevity of description of the present disclosure, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be configured and operated in a particular orientation. Thus, such terms should not be construed as limitations on the present disclosure.

[0050] In the description of this disclosure, "plurality" means two or more.

[0051] A shock absorber 1 according to one embodiment of the present disclosure will now be described with reference to the accompanying drawings.

[0052] As shown in FIGS. 1 to 21, a shock absorber 1 according to an embodiment of the present disclosure includes a cylinder 100, a piston 200, a flow control valve 300, a valve core 400, and a pilot valve 500.

[0053] The piston 200 is movably disposed in the cylinder 100, and the piston 200 divides the interior of the cylinder 100 into a compression chamber 101 and a rebound chamber 102. The flow rate control valve 300 is disposed in the piston 200 and communicates with the compression chamber 101 and the rebound chamber 102, respectively. The valve core 400 is movably disposed in the piston 200. The pilot valve 500 is connected to the valve core 400. When the valve core 400 moves, the flow rate control valve 300 is controlled by the pilot valve 500 to adjust the flow rate of fluid between the compression chamber 101 and the rebound chamber 102.

[0054] The shock absorber 1 is composed of a first air passage 410 and a second air passage 420, the first air passage 410 communicates with the spaces on both sides of the movement direction of the valve core 400 and communicates with the rebound chamber 102, the second air passage 420 communicates with the spaces on both sides of the movement direction of the valve core 400, a portion of the first air passage 410 is configured in the valve core 400, another portion of the first air passage 410 is configured in the pilot valve 500, and the second air passage 420 is configured in the valve core 400.

[0055] For example, fluids such as oil and inert gas having a particular pressure may be stored in the compression chamber 101 and the rebound chamber 102.

[0056] In the shock absorber 1 according to the embodiment of the present disclosure, the piston 200 is movably disposed in the cylinder 100, and the piston 200 divides the interior of the cylinder 100 into a compression chamber 101 and a rebound chamber 102. The flow control valve 300 is disposed on the piston 200 and communicates with each of the compression chamber 101 and the rebound chamber 102. In this manner, when the piston 200 compresses the volume of the compression chamber 101, the volume of the rebound chamber 102 increases accordingly. In this case, the fluid in the compression chamber 101 flows through the flow control valve 300 to the rebound chamber 102. When the piston 200 compresses the volume of the rebound chamber 102, the volume of the compression chamber 101 increases accordingly. In this case, the fluid in the rebound chamber 102 flows through the flow control valve 300 to the compression chamber 101. In the above process, the moving direction of the piston 200 is repeatedly changed, so that the fluid repeatedly flows between the compression chamber 101 and the rebound chamber 102, and the friction between the fluid and the shock absorber 1 generates heat, so that the kinetic energy of the piston 200 can be converted into the thermal energy of the fluid, thereby reducing the power of the piston 200.

[0057] Therefore, it can be seen that the cylinder 100 and piston 200 of the shock absorber 1 are respectively connected to two objects (e.g., a vehicle frame and a wheel), and when one of the two objects vibrates, the vibration force can be transmitted to the other object due to the presence of the shock absorber 1, thereby achieving a shock absorption effect.

[0058] Furthermore, the valve core 400 is movably disposed on the piston 200, and the pilot valve 500 is connected to the valve core 400. When the valve core 400 moves, the pilot valve 500 controls the flow control valve 300 to adjust the flow rate of the fluid between the compression chamber 101 and the rebound chamber 102. In this way, the movement of the valve core 400 can control the flow rate of the fluid between the compression chamber 101 and the rebound chamber 102. Therefore, when the valve core 400 moves the same distance, the amount of heat generated by the fluid due to friction will be different, which will change the impact absorption effect of the shock absorber 1.

[0059] The shock absorber 1 is also configured with a first air passage 410 and a second air passage 420, the first air passage 410 communicating with the spaces on both sides in the movement direction of the valve core 400 and communicating with the rebound chamber 102, the second air passage 420 communicating with the spaces on both sides in the movement direction of the valve core 400, a portion of the first air passage 410 being configured in the valve core 400, another portion of the first air passage 410 being configured in the pilot valve 500, and the second air passage 420 being configured in the valve core 400.

[0060] By providing the first air passage 410 and the second air passage 420, the air pressure in the space on both sides of the valve core 400 in the direction of movement can be balanced, making the movement of the valve core 400 more stable, and therefore the movement of the pilot valve 500 more stable. Furthermore, because a portion of the first air passage 410 and the entire second air passage 420 are configured in the valve core 400, no additional components for providing the air passages need to be assembled to the valve core 400. For example, no tubular column penetrating the valve core 400 is required, and no air passage needs to be provided in the tubular column. In other words, the air passages that need to pass through the valve core 400 are completely integrated into the valve core 400 itself. In this way, the number of parts can be reduced, and the valve core 400 has higher space utilization and a higher degree of integration. The overall number of parts in the shock absorber 1 is reduced, making assembly easier and reducing machining costs.

[0061] 1-3 , shock absorber 1 further includes a first one-way valve 430 and a second one-way valve 440. First one-way valve 430 is disposed in first air passage 410 and allows gas to flow only from first air passage 410 in a direction closer to flow control valve 300. Second one-way valve 440 is disposed in second air passage 420 and allows gas to flow only from second air passage 420 in a direction away from flow control valve 300.

[0062] By providing the first one-way valve 430 and the second one-way valve 440, the flow rate and flow direction of the gas in the first air passage 410 and the second air passage 420 can be controlled, thereby controlling the air pressure balance on both sides of the movement direction of the valve core 400, and thereby ensuring the stability of the movement direction of the valve core 400.

[0063] According to some embodiments of the present disclosure, as shown in FIG. 3, the first one-way valve 430 includes a first path member 431, a first closure member 432, and a first return elastic member 433.

[0064] The first path member 431 is attached to the first air passage 410, and a first path 431a is provided. The first closing member 432 is movably attached to the first air passage 410, and is positioned at the end of the first path member 431 that faces the flow rate adjustment valve 300. The first return elastic member 433 is attached to the first air passage 410, and its two ends come into contact with the inner wall surface of the first air passage 410 and the first closing member 432, respectively, so that the first closing member 432 comes into contact with the first path member 431 and closes the first path 431a.

[0065] For example, the first closing member 432 may be a ball. When gas flows in a direction closer to the flow rate regulation valve 300, the first closing member 432 is pressed to push down the first return elastic member 433, thereby opening the first path 431a and ensuring the normal flow of gas in the first air passage 410. When the gas stops flowing in the direction of the flow rate regulation valve 300, the first return elastic member 433 presses the first closing member 432 again and comes into contact with the first path member 431a, closing the first path 431a and facilitating the next use.

[0066] 3 , a first support ring 411 is provided on the inner wall surface of the first air passage 410. The first support ring 411 is located at the end of the first closing member 432 that faces the flow control valve 300. Two ends of the first return elastic member 433 contact the first support ring 411 and the first closing member 432, respectively. In this way, since the arrangement of the first return elastic member 433 in the first air passage 410 is facilitated, the arrangement of the first closing member 432 and the first path member 431 can also be implemented.

[0067] According to some embodiments of the present disclosure, as shown in FIG. 2, the second one-way valve 440 includes a second path member 441, a second closure member 442, and a second return elastic member 443.

[0068] The second path member 441 is attached to the second air passage 420 to provide a second path 441a. The second closing member 442 is movably attached to the second air passage 420 and is positioned at the end of the second path member 441 that faces the flow rate adjustment valve 300. A second support ring 421 is provided on the inner wall surface of the second air passage 420 and is positioned at the end of the second closing member 442 that faces away from the second path member 441. The second return elastic member 443 is attached to the second air passage 420 and has two ends that come into contact with the second path member 441 and the second closing member 442, respectively, so that the second closing member 442 comes into contact with the second support ring 421 and closes the second air passage 420.

[0069] For example, the second closing member 442 may be a ball. When gas flows away from the flow control valve 300, the second closing member 442 is pushed down and pushes down the second elastic return member 443, so that the second closing member 442 is separated from the second support ring 421 and the second air passage 420 is opened, thereby ensuring the normal flow of gas in the second air passage 420. When the gas stops flowing toward the flow control valve 300, the second elastic return member 443 pushes the second closing member 442 again and stops against the second support ring 421, closing the second air passage 420 and facilitating the next use.

[0070] 1 , the pilot valve 500 is movably attached to the end of the valve core 400 facing the flow regulating valve 300. In this manner, the pilot valve 500 is positioned between the valve core 400 and the flow regulating valve 300. This not only ensures the connection between the pilot valve 500 and the valve core 400 and the flow regulating valve 300, but also shortens the length of the pilot valve 500, reducing costs and weight. Furthermore, because the pilot valve 500 is movable relative to the valve core 400, on the one hand, it facilitates discharge and reduces the impact on the valve core 400, thereby ensuring stability of movement. On the other hand, the constraint between the pilot valve 500 and the valve core 400 is eliminated, reducing requirements for the machining process, such as the requirement for the length accuracy of the pilot valve 500, thereby preventing process errors from affecting the assembly of the pilot valve 500.

[0071] According to some embodiments of the present disclosure, as shown in Figures 4 to 6, the portion of the first air passage 410 configured in the valve core 400 includes a first axial central segment 412, a first radial segment 413, and a first axial eccentric segment 414.

[0072] The first axial central segment 412 extends along the axial direction of the valve core 400, and the central axis of the first axial central segment 412 coincides with the central axis of the valve core 400. The first radial segment 413 extends along the radial direction of the valve core 400, and one end of the first radial segment 413 communicates with one end of the first axial central segment 412 opposite the flow rate regulation valve 300, and the other end of the first radial segment 413 penetrates the outer circumferential surface of the valve core 400. The first axial eccentric segment 414 extends along the axial direction of the valve core 400, and the central axis of the first axial eccentric segment 414 does not coincide with the central axis of the valve core 400, and the end of the first axial eccentric segment 414 adjacent to the flow rate regulation valve 300 communicates with the first radial segment 413. In this way, based on the limited volume of the valve core 400, an appropriate exhaust path is provided for switching from the approximately center position of one end surface to the center position of another end surface, forming a one-way path, thereby achieving high space utilization. When the valve core 400 moves to the side of the one end surface, the generated gas flows through the first air path 410 to the side of the other end surface.

[0073] According to some embodiments of the present disclosure, as shown in FIG. 7, a portion of the first air passage 410 configured in the pilot valve 500 includes a second axial central segment 415 and a second radial segment 416.

[0074] The second axial central segment 415 extends along the axial direction of the pilot valve 500, with the central axis of the second axial central segment 415 coinciding with the central axis of the pilot valve 500, and the end of the second axial central segment 415 opposite the flow rate regulation valve 300 communicates with the first axial central segment 412. The second radial segment 416 extends along the radial direction of the pilot valve 500, with one end of the second radial segment 416 communicating with the end of the second axial central segment 415 adjacent to the flow rate regulation valve 300, and the other end of the second radial segment 416 communicating with the rebound chamber 102.

[0075] In this way, on the one hand, when gas flows into the pilot valve 500, the gas first moves along the axial direction of the pilot valve 500 and then flows out from the side wall of the pilot valve 500 through the first air passage 410, and on the other hand, since the gas flows out from the side wall of the pilot valve 500 through the first air passage 410, the gas is not obstructed by the flow control valve 300 and flows more smoothly.

[0076] According to some embodiments of the present disclosure, as shown in Figures 4 to 6, the second air passage 420 includes a third axial eccentric segment 422, a third radial segment 423, and a third axial central segment 424.

[0077] The third axial eccentric segment 422 extends along the axial direction of the valve core 400, and the central axis of the third axial eccentric segment 422 does not coincide with the central axis of the valve core 400. The third radial segment 423 extends along the radial direction of the valve core 400, and one end of the third radial segment 423 communicates with the end of the third axial eccentric segment 422 opposite the flow rate regulation valve 300, and the other end of the third radial segment 423 penetrates the outer circumferential surface of the valve core 400. The third axial central segment 424 extends along the axial direction of the valve core 400, and the central axis of the third axial central segment 424 coincides with the central axis of the valve core 400, and the end of the third axial central segment 424 adjacent to the flow rate regulation valve 300 communicates with the third radial segment 423. In this way, based on the limited volume of the valve core 400, an appropriate exhaust path is provided to switch from the approximately intermediate position of the other end face to the intermediate position of the one end face, forming another one-way path, so that the space utilization rate is high. When the valve core 400 moves to the other end face side, the generated gas flows to the one end face side through the second air path 420.

[0078] According to some embodiments of the present disclosure, as shown in Fig. 1, the shock absorber 1 further includes a first elastic member 401 and a second elastic member 402. The first elastic member 401 and the second elastic member 402 are respectively disposed on both sides of the valve core 400 in the moving direction. The first elastic member 401 and the second elastic member 402 together apply an elastic force to the valve core 400 to stabilize the position of the valve core 400.

[0079] In this way, under the action of the first elastic member 401 and the second elastic member 402, when the valve core 400 is not exposed to external force, neither side of the valve core 400 in the moving direction will come into contact with other objects, thereby preventing the first air passage 410 and the second air passage 420 from being blocked, thereby ensuring the smooth flow of gas.

[0080] According to some embodiments of the present disclosure, as shown in FIGS. 4 to 6 , a first annular slot 403 is provided at an end of the valve core 400 facing the first elastic member 401. The first elastic member 401 is a spring. The first elastic member 401 is inserted into the first annular slot 403. A second annular slot 404 is provided at an end of the valve core 400 facing the second elastic member 402. The second elastic member 402 is a spring. The second elastic member 402 is inserted into the second annular slot 404.

[0081] By providing the first annular slot 403 and the second annular slot 404, the first elastic member 401, the second elastic member 402, and the valve core 400 can be pre-positioned, and the overall volume of the first elastic member 401, the second elastic member 402, and the valve core 400 can be reduced.

[0082] According to some embodiments of the present disclosure, as shown in Figure 6, first air passage 410 communicates with first annular slot 403, and second annular slot 404 surrounds and separates first air passage 410. Second air passage 420 communicates with second annular slot 404, and first annular slot 403 surrounds and separates second air passage 420.

[0083] The first axial eccentric segment 414 communicates with the first annular slot 403, and the third axial eccentric segment 422 communicates with the second annular slot 404. In this way, the first air passage 410 and the first annular slot 403 have a common portion, and the second air passage 420 and the second annular slot 404 have a common portion, so that the machining cost of the valve core 400 can be reduced and the production efficiency can be improved.

[0084] 1, the inner wall of the second annular slot 404 is loosely fitted onto the pilot valve 500. In this manner, the gap between the pilot valve 500 and the inner wall of the second annular slot 404 can absorb installation errors and machining errors to a certain extent, thereby ensuring the accuracy of the movement path of the pilot valve 500.

[0085] According to some embodiments of the present disclosure, as shown in FIG. 1, piston 200 includes a piston rod 210 and a piston valve body 220.

[0086] The piston valve element 220 divides the interior of the cylinder 100 into a compression chamber 101 and a rebound chamber 102. The piston valve element 220 is connected to the piston rod 210 via a valve element 600. The flow control valve 300 is attached to the valve element 600. The pilot valve 500 extends into the valve element 600 to mate with the flow control valve 300.

[0087] For example, the outer circumferential surface of the valve body 600 is covered with a piston valve body 220 that is threadedly connected to the outer circumferential surface of the valve body 600, and the outer circumferential surface of the valve body 600 is covered with a piston rod 210 that is threadedly connected to the outer circumferential surface of the valve body 600.

[0088] Dividing the piston 200 into the piston rod 210 and the piston valve body 220 allows the flow control valve 300, the pilot valve 500, and the valve core 400 to be more easily attached. In addition, the piston valve body 220 is connected to the piston rod 210 by the valve body 600, making disassembly and assembly easier.

[0089] 1, the valve body 600 is provided with a third air passage 601, and the side wall of the piston rod 210 is provided with a fourth air passage 211, and the first air passage 410 sequentially communicates with the rebound chamber 102 via the third air passage 601 and the fourth air passage 211. In this way, when gas exchange occurs between the first air passage 410 and the rebound chamber 102, the gas flow path becomes clearer, thereby improving the gas flow efficiency.

[0090] 8 and 9, a first restricting boss 602 is provided on the inner wall surface of the valve body 600. The first restricting boss 602 is positioned between the flow rate adjustment valve 300 and the valve core 400, and surrounds the pilot valve 500 to restrict the movement path of the pilot valve 500. At least a portion of the third air path 601 is configured in the first restricting boss 602.

[0091] In this way, on the one hand, the first restricting boss 602 can limit the movement of the pilot valve 500, thereby improving the movement accuracy of the pilot valve 500, and on the other hand, since the distance between the first air passage 410 and the third air passage 601 is small, the flow of gas between the first air passage 410 and the third air passage 601 becomes smoother.

[0092] According to some embodiments of the present disclosure, as shown in Figures 1, 8, and 9, the first air passage 410 passes through a portion of the pilot valve 500 extending into the valve body 600, one end of the third air passage 601 passes through the side of the first restricting boss 602 facing the flow control valve 300, and the other end of the third air passage 601 passes through the outer surface of the valve body 600.

[0093] In this way, the distance between the first air passage 410 and the third air passage 601 is reduced, thus allowing for smoother gas flow between the first air passage 410 and the third air passage 601, and the distance between the third air passage 601 and the rebound chamber 102 is reduced, thus allowing for smoother gas flow between the rebound chamber 102 and the third air passage 601.

[0094] 1, the third air passage 601 and the fourth air passage 211 are staggered in the axial direction of the piston rod 210. In this manner, venting the gas in the piston rod 210 to the outside of the piston rod 210 can be beneficial because it prevents the gas from interfering with the movement of the valve core 400 in the oil.

[0095] According to some embodiments of the present disclosure, as shown in FIG. 1, the shock absorber 1 further includes a coil element 700 and a hood body 800.

[0096] The coil assembly 700 is attached to the piston rod 210. The hood body 800 is attached to the coil assembly 700. The valve core 400 is movably attached to the hood body 800. When the coil assembly 700 is powered on, the valve core 400 is magnetized, and the valve core and the valve body 600 are attracted to each other.

[0097] The valve element 600 may be made of a magnetic material, and the valve core 400 may also be made of a magnetic material. For example, the valve element 600 and the valve core 400 may be made of metallic iron. In this way, after the coil assembly 700 is powered on, the valve core 400 is magnetized so that the valve core and the valve element 600 are attracted to each other, and the valve core 400 can move in a direction closer to the valve element 600.

[0098] The hood body 800 may also fix the relative positions of the coil assembly 700 and the valve core 400, and may also determine the direction of movement of the valve core 400. The hood body 800 may be made of a magnetic material. For example, the hood body 800 may be made of metallic iron. In this way, the hood body 800 may also be magnetized under the action of the coil assembly 700. When the hood body 800 comes into contact with the valve core 400, the magnetic force between the valve core 400 and the valve disc 600 increases.

[0099] According to some embodiments of the present disclosure, as shown in Figures 4 and 10, a second limiting protrusion 801 is provided on the inner wall surface of the hood body 800, and a third limiting boss 405 is provided on the outer wall surface of the valve core 400, and the second limiting protrusion 801 and the third limiting boss 405 abut against each other to define the farthest position of the valve core 400 relative to the flow regulating valve 300.

[0100] In this way, on the one hand, the positioning accuracy between the hood body 800 and the valve core 400 can be improved, and on the other hand, when the pressure of the flow control valve 300 is excessively large and pushes up the pilot valve 500, the distance that the pilot valve 500 drives the valve core 400 to move will not be excessively large, thereby ensuring the reliability of the movement of the valve core 400 during continuous use.

[0101] 1, the inner wall surface of the hood body 800 and the outer wall surface of the valve core 400 are loosely fitted to restrict the movement of the valve core 400 along the axial direction of the valve core 400. In this way, when the valve core 400 moves, the flow regulating valve 300 can be accurately controlled by the pilot valve 500 to ensure the adjustment of the flow rate of the fluid between the compression chamber 101 and the rebound chamber 102.

[0102] According to some embodiments of the present disclosure, as shown in FIG. 1 , the shock absorber 1 further includes a magnetic barrier ring 900. The magnetic barrier ring 900 is attached to the piston rod 210. The magnetic barrier ring 900 is positioned between the hood body 800 and the valve body 600 and separates the coil assembly 700 and the valve body 600. By providing the magnetic barrier ring 900, when the coil 720 is powered on, the magnetic field generated by the coil 720 can be prevented from affecting the valve body 600, so that the magnetic field generated by the coil 720 mainly acts on the valve core 400, and the magnetic force generated between the valve core 400 and the valve body 600 is increased.

[0103] According to some embodiments of the present disclosure, as shown in Figures 1 and 13, a support slot 910 is provided at the end of the magnetic barrier ring 900 facing away from the valve body 600. The support slot 910 penetrates the inner circumferential surface of the magnetic barrier ring 900. The hood body 800 is mated with the support slot 910. By providing the support slot 910, accurate alignment between the magnetic barrier ring 900 and the hood body 800 can be achieved.

[0104] 1 and 13, the support slot 910 is interference-fit with the hood body 800. In this manner, the area where the hood body 800 and the magnetic barrier ring 900 are joined can be sealed, thereby preventing leakage.

[0105] 1 , 8 , 9 , and 13 , the end of the magnetic barrier ring 900 facing the valve body 600 is provided with an alignment slot 920, which penetrates the inner circumferential surface of the magnetic barrier ring 900. The end of the valve body 600 facing the magnetic barrier ring 900 is provided with an alignment protrusion 603, which is aligned with the alignment slot 920. By providing the alignment slot 920, accurate alignment between the magnetic barrier ring 900 and the valve body 600 can be achieved. In addition, the space between the magnetic barrier ring 900 and the valve body 600 can be sealed, thereby preventing liquid leakage by sealing the area where the valve body 600 and the magnetic barrier ring 900 are aligned.

[0106] According to some embodiments of the present disclosure, as shown in Figures 1, 8, 9, and 13, the outer diameter of the cross section of the positioning protrusion 603 gradually decreases in a direction closer to the magnetic barrier ring 900, and the cross-sectional area of ​​the positioning slot 920 gradually decreases in a direction away from the valve body 600. In this way, an induction effect is achieved between the positioning protrusion 603 and the slot wall of the positioning slot 920, so that it is more preferable to insert the positioning protrusion 603 into the positioning slot 920.

[0107] 1 , the sealing ring 930 is disposed between the outer circumferential surface of the magnetic barrier ring 900 and the inner circumferential surface of the piston rod 210 to seal the gap between the magnetic barrier ring 900 and the piston rod 210. The outer circumferential surface of the magnetic barrier ring 900 may be provided with a groove that is aligned with the sealing ring 930. In this way, the sealing performance between the magnetic barrier ring 900 and the piston rod 210 is improved, thereby preventing liquid leakage.

[0108] According to some embodiments of the present disclosure, as shown in Figures 8 and 9, the end of the valve body 600 facing the valve core 400 may be provided with a restricting slot 604, and the valve core 400 may be inserted into the restricting slot 604.

[0109] In this way, the limiting slot 604 can play a role in limiting the movement of the valve core 400, so that the valve core 400 is not deflected throughout the entire movement stroke of the valve core 400, and the movement stability is increased. In addition, the movement path of the valve core 400 can be enlarged without needing to enlarge the axial length of the hood body 800, thereby improving the compactness of the shock absorber 1, reducing the volume of the shock absorber 1, and facilitating the miniaturization of the shock absorber 1.

[0110] According to some embodiments of the present disclosure, as shown in FIGS. 1 and 11, a coil assembly 700 includes a holder 710, a coil 720, a guide wire 721, and an insulating cover 740.

[0111] Holder 710 exteriorly covers hood body 800 and has a coil slot 711 on its outer wall, and the end of holder 710 facing away from valve body 600 is formed with guide wire base 712, which in turn is formed with guide wire slot 713. Coil 720 is wound in coil slot 711. Guide wire 721 is connected to coil 720, and guide wire 721 is pulled out from the end of holder 710 facing away from valve body 600 through guide wire slot 713. Insulating cover 740 is attached to guide wire base 712 and seals and covers guide wire slot 713.

[0112] Thus, the holder 710 may be made of an insulating material and configured to restrict and secure the coil 720 and the guide wire 721. The coil 720 is a copper wire, and the guide wire 721 includes an insulating bushing and a metal conductor positioned in the insulating bushing. By providing the coil 720, a more stable and reliable magnetic field can be generated. Furthermore, the coil 720 is connected to an external power source via the guide wire 721, thereby reducing the risk of electric shock and making the shock absorber 1 safer. By using the insulating cover 740 to seal and cover the guide wire slot 713, the insulating cover 740 and the guide wire holder 712 are removable, making disassembly and assembly of the guide wire 721 more convenient while ensuring safety.

[0113] According to some embodiments of the present disclosure, as shown in FIGS. 1 and 12 , the coil assembly 700 further includes a metal cap 750. The metal cap 750 is attached to the end of the holder 710 facing away from the valve body 600, in contact with the hood body 800. The metal cap 750 has a notch 751. The guide wire base 712 is aligned with the notch 751. In this manner, when the coil 720 is powered on, magnetic field lines pass through the metal cap 750, magnetizing the metal cap 750. The magnetic force of the metal cap 750 can be conducted to the valve core 400 via the hood body 800, creating a relatively strong magnetic force between the valve core 400 and the valve body 600.

[0114] 1 and 10 , an annular positioning slot 802 is provided on the end face of the hood body 800 at the end facing away from the valve body 600. The annular positioning slot 802 penetrates the outer circumferential surface of the hood body 800, i.e., the outer circumferential side of the annular positioning slot 802 is open. The metal cap 750 is mated with the annular positioning slot 802. In this way, the relative positions of the metal cap 750 and the hood body 800 can be fixed, and the metal cap 750 contacts the hood body 800, thereby improving installation accuracy.

[0115] 1 and 10, a support protrusion 803 is provided on the outer peripheral surface of the hood body 800, and the support protrusion 803 is supported by the end of the holder 710 that faces the valve body 600. In this way, the relative position between the hood body 800 and the holder 710 can be determined, thereby improving the installation accuracy.

[0116] According to some embodiments of the present disclosure, as shown in FIGS. 1 and 14-19, a flow regulating valve 300 includes an overflow valve body 310 and an overflow valve seat 320.

[0117] The overflow valve element 310 is movably attached to the valve element 600. The overflow valve seat 320 is attached to the valve element 600 and is located at the end of the overflow valve element 310 facing away from the pilot valve 500. The overflow valve seat 320 is provided with a first flow path 321 and a second flow path 322. The first flow path 321 and the second flow path 322 communicate with the compression chamber 101 and the rebound chamber 102, respectively. The minimum cross-sectional area of ​​the first flow path 321 is larger than the minimum cross-sectional area of ​​the second flow path 322. When the valve core 400 moves, the overflow valve element 310 is controlled to move by the pilot valve 500, so that the first flow path 321 is opened and closed using the overflow valve element 310.

[0118] The flow control valve 300 is divided into an overflow valve element 310 and an overflow valve seat 320. By moving the valve core 400, the overflow valve element 310 can be controlled to open or close the first flow path 321, so that the compression chamber 101 and the rebound chamber 102 communicate with each other via both the first flow path 321 and the second flow path 322, or the compression chamber 101 and the rebound chamber 102 communicate with each other via the second flow path 322, thereby changing the flow rate of fluid between the compression chamber 101 and the rebound chamber 102 to balance the pressure between the compression chamber 101 and the rebound chamber 102.

[0119] 14 to 16 , an overflow chamber 323 communicating with the compression chamber 101 is formed in the overflow valve seat 320, a first through-hole 324 is provided at the end of the overflow valve seat 320 facing the overflow valve body 310, and a second through-hole 325 is provided in the side wall of the overflow valve seat 320, the overflow chamber 323 communicates with the rebound chamber 102 via the first through-hole 324 and the second through-hole 325, the cross-sectional area of ​​the first through-hole 324 is larger than the cross-sectional area of ​​the second through-hole 325, the overflow chamber 323 and the first through-hole 324 form a first flow path 321, and the overflow chamber 323 and the second through-hole 325 form a second flow path 322. The overflow valve body 310 opens and closes the first through-hole 324 to open and close the first flow path 321.

[0120] In this way, the first flow path 321 and the second flow path 322 share the overflow chamber 323, which reduces the number of machining steps for the overflow valve seat 320 and improves the production efficiency of the overflow valve seat 320. In addition, since the first through hole 324 is formed at the end of the overflow valve seat 320 facing the overflow valve body 310, it is preferable that the overflow valve body 310 opens and closes the first through hole 324.

[0121] In addition, the second through-hole 325 is formed in a side wall of the overflow valve seat 320. That is, the first through-hole 324 and the second through-hole 325 are located on different side walls of the overflow valve seat 320. Therefore, when the overflow valve body 310 opens and closes the first through-hole 324, the second through-hole 325 will not be accidentally closed, and the second through-hole 325 can still circulate normally, thereby improving the reliability of the second flow path 322.

[0122] 17 to 19 , the overflow valve body 310 has an annular slot 311 at an end thereof facing the overflow valve seat 320, and the outer peripheral wall of the annular slot 311 contacts the overflow valve seat 320 to close the first through-hole 324, thereby closing the first flow path 321. The outer peripheral wall of the annular slot 311 separates from the overflow valve seat 320 to open the first through-hole 324, thereby opening the first flow path 321.

[0123] By providing the annular slot 311, on the one hand, the weight and cost of the overflow valve body 310 can be reduced, and on the other hand, when the overflow valve body 310 closes the first through-hole 324, some of the fluid may remain in the overflow chamber 323 because the flow rate of the second flow path 322 is relatively low. Since the annular slot 311 communicates with the overflow chamber 323 via the first through-hole 324, the annular slot 311 can also store a certain amount of fluid, so that if the volume of the overflow valve seat 320 does not increase, the total amount of fluid stored through the flow regulating valve 300 can be increased.

[0124] According to some embodiments of the present disclosure, as shown in FIGS. 1 , 15 , and 16 , the shock absorber 1 further includes a third elastic member 330. A support portion 326 is provided at the end of the overflow valve seat 320 facing the overflow valve body 310. The third elastic member 330 is a spring that surrounds the inner wall of the annular slot 311. Two ends of the third elastic member 330 rest against the support portion 326 and the bottom wall of the annular slot 311, respectively. The third elastic member 330 provides an elastic force that presses the outer peripheral wall of the annular slot 311 to separate it from the overflow valve seat 320.

[0125] In this way, when the coil device 700 is not powered on, the third elastic member 330 can press the overflow valve seat 320 to separate it from the overflow valve body 310, thereby forming a gap between the overflow valve seat 320 and the overflow valve body 310 and ensuring communication between the first flow path 321 and the rebound chamber 102. In addition, since the inner wall of the annular slot 311 is exteriorly covered with the third elastic member 330, pre-positioning is performed between the third elastic member 330 and the overflow valve body 310, resulting in high installation accuracy.

[0126] According to some embodiments of the present disclosure, as shown in Figures 1, 8, and 9, a first via hole 605 is provided in the side wall of the valve body 600, and both the first flow path 321 and the second flow path 322 communicate with the rebound chamber 102 through the first via hole 605. In this manner, both the overflow valve seat 320 and the overflow valve body 310 can be attached to the valve body 600, thereby reducing the overall volume of the valve body 600, the overflow valve seat 320, and the overflow valve body 310. In addition, by providing the first via hole 605, the first flow path 321 and the second flow path 322 can be communicated with the rebound chamber 102.

[0127] According to some embodiments of the present disclosure, as shown in FIGS. 1 and 17 to 19 , a central chamber 312 and an annular chamber 313 are defined between the end of the overflow valve body 310 facing away from the overflow valve seat 320 and the valve body 600, with the annular chamber 313 surrounding the central chamber 312. The overflow valve body 310 is provided with a third flow path 314 and a fourth flow path 315. The third flow path 314 communicates with the rebound chamber 102, the annular chamber 313, and the central chamber 312, respectively. The fourth flow path 315 communicates with the first flow path 321 and the central chamber 312, respectively. The pilot valve 500 extends into the central chamber 312 and controls whether the central chamber 312 is in communication with the third flow path 314.

[0128] Thus, when the coil 720 is powered on and the fluid in the rebound chamber 102 flows into the compression chamber 101, the pilot valve 500 presses the valve core 400 and stops against the third flow path 314, preventing the central chamber 312 from communicating with the third flow path 314. The fluid in the third flow path 314 first flows into the annular chamber 313. When a certain amount of fluid is stored in the annular chamber 313, it is difficult for the fluid in the third flow path 314 to continue to flow into the annular chamber 313. As the fluid in the rebound chamber 102 continues to flow into the third flow path 314, the pressure in the third flow path 314 continues to increase. When the pressure in the third flow path 314 is greater than the magnetic force between the valve core 400 and the valve body 600, the pilot valve 500 is pressed, and the central chamber 312 communicates with the third flow path 314. The fluid in the third flow path 314 first flows into the central chamber 312, and then flows through the fourth flow path 315 into the first flow path 321. In this case, the damping of the shock absorber 1 is reduced.

[0129] According to some embodiments of the present disclosure, as shown in Figures 9 and 17-19, the overflow valve body 310 is provided with a first sealing annular pedestal 316 at an end facing away from the overflow valve seat 320, and the valve body 600 is provided with a second sealing annular pedestal 606. One of the first sealing annular pedestal 316 and the second sealing annular pedestal 606 is fitted inside the other. The first sealing annular pedestal 316 and the second sealing annular pedestal 606 together separate the central chamber 312 and the annular chamber 313.

[0130] In this manner, the central chamber 312 and the annular chamber 313 are more easily constructed because they are formed by separating the first sealing annular pedestal 316 and the second sealing annular pedestal 606 together.

[0131] According to some embodiments of the present disclosure, as shown in FIGS. 17-19, the third flow passage 314 includes a radial flow passage 314a, an axial central flow passage 314b, and an axial eccentric flow passage 314c.

[0132] The radial passage 314a extends along the radial direction of the overflow valve body 310, and the radial passage 314a communicates with the rebound chamber 102. The axial central passage 314b extends along the axial direction of the overflow valve body 310, and the radial passage 314a communicates with the central chamber 312 via the axial central passage 314b. The axial eccentric passage 314c extends along the axial direction of the overflow valve body 310, and the radial passage 314a communicates with the annular chamber 313 via the axial eccentric passage 314c. The pilot valve 500 extends into the central chamber 312 to open and close the axial central passage 314b.

[0133] In this manner, the radial passage 314a can be in excellent communication with both the axial central passage 314b and the axial eccentric passage 314c. Fluid in the radial passage 314a flows through the axial eccentric passage 314c into the annular chamber 313, and fluid in the radial passage 314a flows through the axial central passage 314b into the central chamber 312. The pilot valve 500 can close the axial central passage 314b to disconnect the third passage 314 and the central chamber 312, with the axial central passage 314b and the axial eccentric passage 314c being located on either side of the first sealing annular platform 316.

[0134] 17 to 19 , the fourth flow passage 315 extends along the axial direction of the valve core 400. The annular chamber 313 may be in communication with the fourth flow passage 315. In this manner, not only can the fourth flow passage 315 communicate with the flow regulation valve 300 and the central chamber 312, but the relatively short length of the fourth flow passage 315 can also shorten the fluid flow path between the flow regulation valve 300 and the central chamber 312, thereby ensuring the structural strength of the overflow valve body 310.

[0135] 1 and 9 , a second via hole 607 is provided in the side wall of the valve body 600, and the second via hole 607 is in communication with the rebound chamber 102. The inner peripheral surface of the valve body 600 is provided with a flow path annular slot 608 that is in communication with the first via hole 605, and the outer peripheral surface of the overflow valve body 310 closes the flow path annular slot 608, and the third flow path 314 is in communication with the rebound chamber 102 via the flow path annular slot 608 and the second via hole 607 in turn.

[0136] That is, the flow path annular slot 608 communicates with the rebound chamber 102 through the first via hole 605, and when the overflow valve body 310 is attached to the valve body 600, the angle between the overflow valve body 310 and the valve body 600 does not need to be adjusted, but the third flow path 314 can still communicate with the flow path annular slot 608, so the communication is more preferable, and the overflow valve body 310 can seal the flow path annular slot 608, thereby avoiding liquid leakage.

[0137] According to some embodiments of the present disclosure, as shown in Figures 1, 20, and 21, the shock absorber 1 further includes an insert 230, which is attached to the piston valve body 220 and positioned at the end of the flow control valve 300 facing away from the pilot valve 500, and the insert 230 is provided with a first insert flow path 231 and a second insert flow path 232, and the flow control valve 300 is in communication with the compression chamber 101 via the first insert flow path 231 and the second insert flow path 232.

[0138] When the fluid flows from the flow control valve 300 to the compression chamber 101, the maximum flow velocity of the fluid in the first insert channel 231 is greater than the maximum flow velocity of the fluid in the second insert channel 232. When the fluid flows from the compression chamber 101 to the flow control valve 300, the maximum flow velocity of the fluid in the second insert channel 232 is greater than the maximum flow velocity of the fluid in the first insert channel 231.

[0139] By providing the insert 230, the movement direction of the oil in the compression chamber 101 and the rebound chamber 102 is controlled, so that the oil pressure in the rebound chamber 102 and the oil pressure in the compression chamber 101 can be balanced.

[0140] According to some embodiments of the present disclosure, as shown in FIG. 1 , a support boss 221 is provided on the end of the piston valve body 220 opposite the valve body 600. The support boss 221 surrounds the outside of the first insert flow path 231 and the second insert flow path 232. The insert 230 is sandwiched between the support boss 221 and the valve body 600. In this manner, the insert 230 does not need to be provided with a connection structure between the piston valve body 220 and the valve body 600. Since the insert 230 is sandwiched between the support boss 221 and the valve body 600, the support boss 221, the valve body 600, and the insert 230 can be fixed, and disassembly and assembly are easy.

[0141] According to some embodiments of the present disclosure, as shown in FIGS. 1, 20 and 21, the first insert channel 231 includes a first perforation 233 and a first restriction hole 236.

[0142] The first perforation 233 penetrates the insert 230, one end of the first perforation 233 communicates with the flow regulation valve 300, and a first convex edge 234 is provided on one side of the insert 230 facing away from the flow regulation valve 300, and the first convex edge 234 surrounds the first perforation 233. The first throttle hole 236 is formed in the first convex edge 234, and the cross-sectional area of ​​the first perforation 233 is larger than the cross-sectional area of ​​the first throttle hole 236, and the other end of the first perforation 233 communicates with the flow regulation valve 300 via the first throttle hole 236. The insert 230 has a first spring plate 240 at the end facing away from the flow control valve 300, which rests against a first convex edge 234 and seals and covers the first perforation 233.

[0143] For example, a plurality of first perforations 233 may be provided spaced apart along the circumferential direction of the insert 230. The first convex edge 234 may simultaneously surround the plurality of first perforations 233, and the first convex edge 234 may be provided with a plurality of first restriction holes 236, which are in communication with the plurality of first perforations 233.

[0144] In this manner, when fluid flows from the flow regulation valve 300 to the compression chamber 101, the fluid first enters the first perforation 233 and then flows through the first throttle hole 236 to the flow regulation valve 300 until the pushing force of the fluid at the first perforation 233 pushes and elastically deforms the first spring plate 240. In this case, the fluid may flow directly through the first perforation 233 to the compression chamber 101, increasing the flow rate of the fluid between the compression chamber 101 and the flow regulation valve 300. Furthermore, the fluid may flow through the second throttle hole 239 described below to the second perforation 237 described below, and then flow from the second perforation 237 to the flow regulation valve 300.

[0145] According to some embodiments of the present disclosure, as shown in FIG. 1 , the shock absorber 1 further includes a support base 250. The support base 250 is attached to an end of the insert 230 facing away from the flow control valve 300. The first spring plate 240 is sandwiched between the support base 250 and the insert 230. The outer diameter of the support base 250 is smaller than the outer diameter of the first spring plate 240. The support base 250 and the insert 230 may be riveted together.

[0146] In this way, the relative positions of the insert 230, the first spring plate 240, and the support base 250 are fixed. Furthermore, when fluid flows through the first perforations 233 into the flow control valve 300, the pressure of the fluid can push and deform the first spring plate 240. Because the outer diameter of the support base 250 is smaller than the outer diameter of the first spring plate 240, the support base 250 avoids the first spring plate 240. Therefore, the first spring plate 240 has sufficient deformation space and can deform to open the first perforations 233.

[0147] According to some embodiments of the present disclosure, as shown in FIG. 1, a plurality of first spring plates 240 are stacked one on top of the other in the thickness direction.

[0148] In this way, the plurality of first spring plates 240 can be fully deformed with only a larger force. Therefore, the plurality of first spring plates 240 support the fluid in the flow regulation valve 300 so as to prevent the plurality of first spring plates 240 from being easily deformed due to the action of gravity of the fluid in the flow regulation valve 300, thereby ensuring effective sealing of the first perforation 233 by the first spring plates 240.

[0149] According to some embodiments of the present disclosure, as shown in FIGS. 1, 20, and 21, the second insert channel 232 includes a second perforation 237 and a second restriction hole 239.

[0150] The second perforation 237 penetrates the insert 230, and one end of the second perforation 237 communicates with the compression chamber 101. A second convex edge 238 is provided on one side of the insert 230 facing the flow control valve 300, and the second convex edge 238 surrounds the second perforation 237. A second throttling hole 239 is formed in the second convex edge 238, and the cross-sectional area of ​​the second perforation 237 is larger than the cross-sectional area of ​​the second throttling hole 239. The other end of the second perforation 237 communicates with the flow control valve 300 via the second throttling hole 239. A second spring plate 260 is provided on one side of the insert 230 facing the flow control valve 300 , and the second spring plate 260 contacts the second convex edge 238 to seal and cover the second perforation 237 .

[0151] For example, a plurality of second perforations 237 may be provided spaced apart along the circumferential direction of the insert 230. The minimum distance between the second perforations 237 and the central axis of the insert 230 is greater than the minimum distance between the first perforations 233 and the central axis of the insert 230, and the maximum distance between the second perforations 237 and the central axis of the insert 230 is greater than the maximum distance between the first perforations 233 and the central axis of the insert 230. Also, a plurality of second convex edges 238 are provided, and the plurality of second convex edges 238 surround the plurality of second perforations 237 in one-to-one correspondence.

[0152] In this manner, when fluid flows from the compression chamber 101 to the flow regulation valve 300, the fluid first enters the second perforations 237 and then flows from the second throttle holes 239 to the flow regulation valve 300 until the pushing force of the fluid at the second perforations 237 pushes and elastically deforms the second spring plate 260. In this case, the fluid can flow directly to the flow regulation valve 300 through the second perforations 237, increasing the flow rate of the fluid between the compression chamber 101 and the flow regulation valve 300. Furthermore, the fluid may flow through all of the first throttle holes 236 to the first perforations 233 and then flow from the first perforations 233 to the flow regulation valve 300.

[0153] According to some embodiments of the present disclosure, as shown in FIG. 1 , the shock absorber 1 further includes a compression valve plate 270 and an adjustment seat 280. The compression valve plate 270 rests against the end of the flow control valve 300 that faces the insert 230. The adjustment seat 280 is sandwiched between the compression valve plate 270 and the second spring plate 260. The inner diameter of the adjustment seat 280 is larger than the inner diameter of the second spring plate 260.

[0154] That is, the two ends of the compression valve plate 270 rest against the insert 230 and the adjusting sheet 280, respectively, and the flow regulating valve 300, the adjusting sheet 280, the second spring plate 260, and the insert 230 can be precisely fitted together; that is, the second spring plate 260 and the second convex edge 238 are precisely fitted together, thereby ensuring effective sealing of the second perforation 237 by the second spring plate 260. Also, when fluid flows through the second perforation 237 into the flow regulating valve 300, the pressure of the fluid can push and deform the second spring plate 260. Because the inner diameter of the adjusting sheet 280 is larger than the inner diameter of the second spring plate 260, the adjusting sheet 280 avoids the second spring plate 260. Therefore, the second spring plate 260 has sufficient deformation space and can deform to open the second perforation 237.

[0155] 20 and with reference to FIG. 1, an arrangement groove 230a is provided on the end of the insert 230 facing the flow rate adjustment valve 300, and the second spring plate 260, the adjusting sheet 280, and the compression valve plate 270 are arranged in the arrangement groove 230a. By providing the arrangement groove 230a, the relative positions of the second spring plate 260, the adjusting sheet 280, and the compression valve plate 270 can be fixed, and the arrangement between the second spring plate 260, the adjusting sheet 280, and the compression valve plate 270 and the insert 230 can be performed.

[0156] According to some embodiments of the present disclosure, as shown in FIG. 1 , the shock absorber 1 further includes a bottom valve 130. The cylinder 100 includes an outer cylinder 110 and an inner cylinder 120. The inner cylinder 120 extends into the outer cylinder 110. A liquid storage chamber 103 is formed between the outer cylinder 110 and the inner cylinder 120. The piston 200 is movably disposed in the inner cylinder 120 to divide the interior of the inner cylinder 120 into a compression chamber 101 and a rebound chamber 102. The bottom valve 130 is attached to at least one of the inner cylinder 120 and the outer cylinder 110. The bottom valve 130 is provided with a first one-way flow passage 131 and a second one-way flow passage 132. Fluid in the compression chamber 101 flows into the liquid storage chamber 103 through the first one-way flow passage 131, and fluid in the liquid storage chamber 103 flows into the compression chamber 101 through the second one-way flow passage 132.

[0157] For example, fluids at particular pressures, such as oil and inert gases, may be stored in the liquid storage chamber 103 .

[0158] Furthermore, when the piston 200 moves in a direction away from the bottom valve 130, the volume of the compression chamber 101 increases, the volume of the rebound chamber 102 decreases, and the fluid in the rebound chamber 102 and the fluid in the liquid storage chamber 103 flow into the compression chamber 101. When the piston 200 moves in a direction closer to the bottom valve 130, the volume of the compression chamber 101 decreases, the volume of the rebound chamber 102 increases, and the fluid in the compression chamber 101 flows into the rebound chamber 102 and the liquid storage chamber 103.

[0159] In this way, the movement resistance of the piston 200 of the shock absorber 1 is reduced, and as the piston 200 moves, the flow rate of the fluid in the shock absorber 1 increases, so that the kinetic energy of the piston 200 can be effectively converted into thermal energy of the fluid and the thermal energy can be radiated into the atmosphere.

[0160] In addition, by arranging the first one-way flow path 131 and the second one-way flow path 132 in the bottom valve 130, not only can the circulation of fluid between the compression chamber 101 and the liquid storage chamber 103 be ensured, but the fluid can also flow in only one direction through the first one-way flow path 131 or the second one-way flow path 132, so that reliable storage of fluid in the compression chamber 101 and the liquid storage chamber 103 can be ensured and the hydraulic pressure of the liquid storage chamber 103 and the compression chamber 101 can be balanced.

[0161] According to some embodiments of the present disclosure, as shown in FIG. 1 , a sealing sleeve 140 is disposed between the outer circumferential surface of the piston 200 and the inner circumferential surface of the inner cylinder 120. The sealing sleeve 140 may be made of an elastic material such as rubber. The gap between the outer circumferential surface of the piston 200 and the inner circumferential surface of the inner cylinder 120 can be filled with the sealing sleeve 140 to ensure the sealing performance of the rebound chamber 102 and the compression chamber 101, so that the rebound chamber 102 can communicate with the compression chamber 101 only through the flow control valve 300.

[0162] A vehicle 2 according to one embodiment of the present disclosure will now be described with reference to Figure 22. The vehicle 2 includes a shock absorber 1 according to the above embodiment of the present disclosure.

[0163] Hereinafter, the working process of the shock absorber 1 will be described with reference to the accompanying drawings, using an example in which the shock absorber 1 is applied to a vehicle 2.

[0164] The shock absorber 1 may be mounted on the wheel axle.

[0165] When the vehicle is traveling on a relatively flat road surface, the coil assembly 700 may not be powered on. In this case, the overflow valve element 310 and the overflow valve seat 320 are separated. When the vehicle body and the wheel vibrate relative to each other, the piston 200 of the shock absorber 1 moves relative to the cylinder 100. When the piston 200 compresses the compression chamber 101, the fluid in the compression chamber 101 flows through the bottom valve 130 into the liquid storage chamber 103, and then through the first flow path 321 and the second flow path 322 into the rebound chamber 102. In this state, the fluid flow rate is relatively large, damping is small, and the shock absorber 1 appears "soft."

[0166] When the piston 200 compresses the rebound chamber 102, the fluid in the rebound chamber 102 flows into the compression chamber 101 through the first flow path 321 and the second flow path 322, and the fluid in the liquid storage chamber 103 flows into the compression chamber 101 through the bottom valve 130. In this state, the fluid flow rate is relatively large, the damping is small, and the shock absorber 1 appears "soft."

[0167] As the piston 200 moves back and forth, the fluid flows back and forth in the compression chamber 101, the rebound chamber 102, and the liquid storage chamber 103, with a relatively large flow rate and a small damping of the fluid, so that the ride comfort is relatively good when the car is traveling on an uneven road.

[0168] When a vehicle travels on an uneven road with depressions, the coil assembly 700 may be energized. In this case, the overflow valve element 310 contacts the overflow valve seat 320. When the vehicle body and the wheel vibrate relative to each other, the piston 200 of the shock absorber 1 moves relative to the cylinder 100. When the piston 200 compresses the compression chamber 101, the fluid in the compression chamber 101 flows through the bottom valve 130 into the liquid storage chamber 103 and first flows into the rebound chamber 102 through the second flow path 322. In this state, the fluid flow rate is relatively small and the damping is large. The shock absorber 1 appears "hard," and then a large amount of fluid accumulates in the overflow chamber 323 of the overflow valve seat 320, increasing the pressure in the overflow chamber 323. When the pressure is greater than the magnetic attraction force between the valve core 400 and the valve element 600, the overflow valve element 310 is separated from the overflow valve seat 320, and the fluid can flow from the first flow path 321 into the rebound chamber 102. In this state, the fluid flow rate is relatively large and the damping is small.

[0169] When the piston 200 compresses the rebound chamber 102, the fluid in the liquid storage chamber 103 flows through the bottom valve 130 into the compression chamber 101, and the fluid in the rebound chamber 102 first flows through the second flow passage 322 into the compression chamber 101. In this state, the fluid flow rate is relatively small, damping is strong, and the shock absorber 1 appears "stiff." Next, the fluid flows through the second via hole 607 and the flow passage annular slot 608 into the third flow passage 314 until the pressure in the third flow passage 314 exceeds the magnetic attraction force between the valve core 400 and the valve body 600, pushing the pilot valve 500 open and connecting the third flow passage 314 to the central chamber 312. The fluid in the third flow passage 314 flows through the central chamber 312 into the fourth flow passage 315, reducing damping. Finally, a large amount of fluid accumulates in the overflow chamber 323 of the overflow valve seat 320, and the pressure in the overflow chamber 323 increases. When the pressure exceeds the magnetic attractive force between the valve core 400 and the valve body 600, the overflow valve body 310 and the overflow valve seat 320 are separated, and the fluid can flow from the first flow path 321 to the rebound chamber 102. In this state, the flow rate of the fluid further increases and the damping further decreases.

[0170] As the piston 200 moves back and forth, the fluid flows back and forth in the compression chamber 101, the rebound chamber 102, and the liquid storage chamber 103, and the amount of flow repeatedly changes, and the amount of damping of the fluid repeatedly changes accordingly, so that the damping can be adjusted. For example, when a car is traveling at high speed, the damping can be increased by adjusting the flow rate, thereby improving the stability of the car body. When a car is traveling on an uneven road surface, the damping can be reduced by adjusting the flow rate, thereby improving the ride comfort.

[0171] Other configurations and operations of shock absorbers 1 and vehicles 2 having the same according to embodiments of the present disclosure are known to those skilled in the art and will not be described in detail herein.

[0172] In the description herein, any description made with reference to the terms "one embodiment," "some embodiments," "schematic embodiment," "example," "particular example," or "some examples" means that the particular feature, structure, material, or characteristic described with reference to the embodiment or example is included in at least one embodiment or example of the present disclosure. In the description herein, exemplary descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0173] While embodiments of the present disclosure have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents. [Explanation of symbols]

[0174] 1 shock absorber 2 vehicles 100 cylinders 101 Compression chamber 102 Repulsion Chamber 103 Liquid Storage Chamber 110 outer cylinder 120 Inner Cylinder 130 Bottom valve 131 first one-way flow channel 132 Second one-way flow channel 140 sealing sleeve 200 pistons 210 Piston Rod 211 Fourth Airway 220 Piston valve body 221 Support Boss 230 insert 230a Placement groove 231 First insert channel 232 Second Insert Channel 233 First Perforation 234 First convex margin 236 First aperture 237 Second Perforation 238 Second convex margin 239 Second aperture 240 First Spring Plate 250 Support base 260 Second Spring Plate 270 Compression valve plate 280 Adjustable seat 300 Flow control valve 310 Overflow valve body 311 Annular Slot 312 Central room 313 Circular Room 314 Third Stream 314a Radial flow passage 314b Axial central passage 314c Axial eccentric flow path 315 Fourth Stream 316 First sealing ring base 320 Overflow valve seat 321 First Channel 322 Second Channel 323 Overflow Room 324 First through hole 325 Second Through Hole 326 Support part 330 Third Elastic Member 400 valve core 401 First elastic member 402 second elastic member 403 First Annular Slot 404 Second Annular Slot 405 Third Limited Boss 410 First air passage 411 First support ring 412 first axial central segment 413 First Radial Segment 414 First axial eccentric segment 415 Second Axial Central Segment 416 Second Radial Segment 420 Second Airway 421 Second support ring 422 Third axial eccentric segment 423 Third Radial Segment 424 Third Axial Central Segment 430 First one-way valve 431 First Route Component 431a First Route 432 first closing member 433 First return elastic member 440 Second one-way valve 441 Second Route Member 441a Second Route 442 Second Closure Member 443 Second return elastic member 500 Pilot Valve 600 Valve body 601 Third Airway 602 First Limited Boss 603 Placement protrusion 604 Limited Slots 605 First via hole 606 Second sealing ring 607 Second via hole 608 Flow path annular slot 700 Coil parts 710 Holder 711 Coil Slot 712 Guide wire stand 713 Guide Wire Slot 720 coil 740 Insulation Cover 750 Metal Cap 751 Notch 721 Guide Wire 800 Hood body 801 Second limiting protrusion 802-arranged annular slot 803 Support protrusion 900 Magnetic Barrier Ring 910 support slot 920 placement slots 930 Sealing ring

Claims

1. A shock absorber (1), comprising: A cylinder (100); A piston (200); a flow control valve (300); A valve core (400), a pilot valve (500); The piston (200) is movably disposed in the cylinder (100), and the piston (200) divides the interior of the cylinder (100) into a compression chamber (101) and a rebound chamber (102); The flow rate adjusting valve (300) is arranged on the piston (200) and communicates with the compression chamber (101) and the rebound chamber (102), respectively; The valve core (400) is movably disposed on the piston (200), The pilot valve (500) is connected to the valve core (400), and when the valve core (400) moves, the flow control valve (300) is controlled by the pilot valve (500) to adjust the flow rate of the fluid between the compression chamber (101) and the rebound chamber (102); The shock absorber (1) is composed of a first air passage (410) and a second air passage (420), the first air passage (410) communicates with spaces on both sides in the movement direction of the valve core (400) and communicates with the rebound chamber (102), the second air passage (420) communicates with the spaces on both sides in the movement direction of the valve core (400), a portion of the first air passage (410) is configured in the valve core (400), another portion of the first air passage (410) is configured in the pilot valve (500), and the second air passage (420) is configured in the valve core (400).

2. a first one-way valve (430); a second one-way valve (440); the first one-way valve (430) is disposed in the first air passage (410) and allows gas to flow only from the first air passage (410) in a direction closer to the flow control valve (300); 2. The shock absorber (1) of claim 1, wherein the second one-way valve (440) is disposed in the second air passage (420) to allow gas to flow only from the second air passage (420) in a direction away from the flow regulating valve (300).

3. The first one-way valve (430) a first path member (431); a first closure member (432); a first return elastic member (433); The first path member (431) is attached to the first air passage (410) to provide a first path (431a); the first closing member (432) is movably attached to the first air passage (410) and is positioned at an end of the first path member (431) opposite the flow rate adjustment valve (300); 3. The shock absorber (1) according to claim 2, wherein the first return elastic member (433) is attached to the first air passage (410) and has two ends that come into contact with the inner wall surface of the first air passage (410) and the first closing member (432), respectively, so that the first closing member (432) comes into contact with the first path member (431) and closes the first path (431a).

4. 4. The shock absorber (1) according to claim 3, wherein a first support ring (411) is provided on the inner wall surface of the first air passage (410), the first support ring (411) is positioned at an end of the first closing member (432) facing the flow control valve (300), and the two ends of the first return elastic member (433) come into contact with the first support ring (411) and the first closing member (432), respectively.

5. The second one-way valve (440) A second path member (441); a second closure member (442); a second return elastic member (443); The second path member (441) is attached to the second air passage (420) to provide a second path (441 a); The second closing member (442) is movably attached to the second air passage (420) and is positioned at an end of the second path member (441) facing the flow rate adjustment valve (300), and a second support ring (421) is provided on the inner wall surface of the second air passage (420), and the second support ring (421) is positioned at an end of the second closing member (442) facing away from the second path member (441), 5. The shock absorber (1) according to claim 2, wherein the second return elastic member (443) is attached to the second air passage (420) and has two ends that come into contact with the second path member (441) and the second closing member (442), respectively, so that the second closing member (442) comes into contact with the second support ring (421) and closes the second air passage (420).

6. The portion of the first air passage (410) configured in the valve core (400) a first axially central segment (412); a first radial segment (413); a first axially eccentric segment (414); The first axial central segment (412) extends along the axial direction of the valve core (400), and the central axis of the first axial central segment (412) coincides with the central axis of the valve core (400); The first radial segment (413) extends along the radial direction of the valve core (400), one end of the first radial segment (413) communicates with the end of the first axial central segment (412) opposite the flow rate regulating valve (300), and the other end of the first radial segment (413) penetrates the outer circumferential surface of the valve core (400); 6. The shock absorber (1) according to claim 1, wherein the first axial eccentric segment (414) extends along the axial direction of the valve core (400), a central axis of the first axial eccentric segment (414) does not coincide with the central axis of the valve core (400), and an end of the first axial eccentric segment (414) adjacent to the flow regulating valve (300) communicates with the first radial segment (413).

7. The portion of the first air passage (410) configured in the pilot valve (500) a second axially central segment (415); a second radial segment (416); The second axial central segment (415) extends along the axial direction of the pilot valve (500), the central axis of the second axial central segment (415) coincides with the central axis of the pilot valve (500), and the end of the second axial central segment (415) opposite the flow control valve (300) communicates with the first axial central segment (412); 7. The shock absorber (1) according to claim 6, wherein the second radial segment (416) extends along the radial direction of the pilot valve (500), one end of the second radial segment (416) communicates with an end of the second axial central segment (415) adjacent to the flow control valve (300), and the other end of the second radial segment (416) communicates with the rebound chamber (102).

8. The second air passage (420) a third axially eccentric segment (422); a third radial segment (423); and a third axial central segment (424); The third axial eccentric segment (422) extends along the axial direction of the valve core (400), and the central axis of the third axial eccentric segment (422) does not coincide with the central axis of the valve core (400); The third radial segment (423) extends along the radial direction of the valve core (400), one end of the third radial segment (423) communicates with the end of the third axial eccentric segment (422) opposite to the flow control valve (300), and the other end of the third radial segment (423) penetrates the outer circumferential surface of the valve core (400); 8. The shock absorber (1) according to claim 1, wherein the third axial central segment (424) extends along the axial direction of the valve core (400), a central axis of the third axial central segment (424) coincides with the central axis of the valve core (400), and an end of the third axial central segment (424) adjacent to the flow regulating valve (300) communicates with the third radial segment (423).

9. A first elastic member (401); 9. The shock absorber (1) according to claim 1, further comprising a second elastic member (402), wherein the first elastic member (401) and the second elastic member (402) are respectively arranged on both sides of the valve core (400) in the moving direction, and both the first elastic member (401) and the second elastic member (402) apply an elastic force to the valve core (400) to stabilize the position of the valve core (400).

10. The valve core (400) has a first annular slot (403) at an end thereof facing the first elastic member (401), the first elastic member (401) being a spring, and the first elastic member (401) being inserted into the first annular slot (403); 10. The shock absorber (1) according to claim 9, wherein the valve core (400) has a second annular slot (404) at an end thereof facing the second elastic member (402), the second elastic member (402) being a spring, and the second elastic member (402) being inserted into the second annular slot (404).

11. the first air passage (410) communicates with the first annular slot (403), and the second annular slot (404) surrounds the first air passage (410) and is separated from the first air passage (410); 11. The shock absorber (1) of claim 10, wherein the second air passage (420) communicates with the second annular slot (404), and the first annular slot (403) surrounds and is separated from the second air passage (420).

12. The piston (200) a piston rod (210); a piston valve body (220), the piston valve body (220) dividing the interior of the cylinder (100) into the compression chamber (101) and the rebound chamber (102); 12. The shock absorber (1) according to any one of claims 1 to 11, wherein the piston valve body (220) is connected to the piston rod (210) by a valve body (600), the flow control valve (300) is attached to the valve body (600), and the pilot valve (500) extends into the valve body (600) to be aligned with the flow control valve (300).

13. 13. The shock absorber (1) according to claim 12, wherein the valve body (600) is provided with a third air passage (601), and the side wall of the piston rod (210) is provided with a fourth air passage (211), and the first air passage (410) is sequentially connected to the rebound chamber (102) via the third air passage (601) and the fourth air passage (211).

14. 14. The shock absorber (1) according to claim 13, wherein a first limiting boss (602) is provided on an inner wall surface of the valve body (600), the first limiting boss (602) is positioned between the flow control valve (300) and the valve core (400), and surrounds the pilot valve (500) so as to limit the movement path of the pilot valve (500), and at least a portion of the third air path (601) is configured in the first limiting boss (602).

15. 15. The shock absorber (1) according to claim 14, wherein the first air passage (410) penetrates a portion of the pilot valve (500) that extends into the valve body (600), one end of the third air passage (601) penetrates a side of the first restricting boss (602) that faces the flow control valve (300), and the other end of the third air passage (601) penetrates an outer surface of the valve body (600).

16. A coil component (700); and a hood body (800), The coil assembly (700) is attached to the piston rod (210), The hood body (800) is attached to the coil part (700), and the valve core (400) is movably attached to the hood body (800), 15. The shock absorber (1) according to any one of claims 12 to 14, wherein when the coil element (700) is powered on, the valve core (400) is magnetized and the valve core and the valve body (600) are attracted to each other.

17. 17. The shock absorber (1) according to claim 16, wherein a second limiting protrusion (801) is provided on the inner wall surface of the hood body (800), and a third limiting boss (405) is provided on the outer wall surface of the valve core (400), and the second limiting protrusion (801) and the third limiting boss (405) come into contact with each other and stop so as to limit the farthest position of the valve core (400) relative to the flow control valve (300).

18. 18. The shock absorber (1) according to claim 16 or 17, further comprising a magnetic barrier ring (900), the magnetic barrier ring (900) being attached to the piston rod (210), the magnetic barrier ring (900) being positioned between the hood body (800) and the valve body (600) to separate the coil part (700) and the valve body (600).

19. 19. The shock absorber (1) according to claim 18, wherein an end of the magnetic barrier ring (900) facing the valve body (600) is provided with an alignment slot (920), the alignment slot (920) penetrates the inner circumferential surface of the magnetic barrier ring (900), and an end of the valve body (600) facing the magnetic barrier ring (900) is provided with an alignment protrusion (603), the alignment protrusion (603) is aligned with the alignment slot (920), the outer diameter of the cross section of the alignment protrusion (603) gradually decreases in a direction closer to the magnetic barrier ring (900), and the cross-sectional area of ​​the alignment slot (920) gradually decreases in a direction away from the valve body (600).

20. The coil component (700) A holder (710); a coil (720); a guide wire (721); an insulating cover (740); The holder (710) surrounds the hood body (800), and a coil slot (711) is provided on the outer wall of the holder. The end of the holder (710) facing away from the valve body (600) is configured as a guide wire base (712), and the guide wire base (712) is configured as a guide wire slot (713). The coil (720) is wound in the coil slot (711), The guide wire (721) is connected to the coil (720), and the guide wire (721) is pulled out through the guide wire slot (713) from the end of the holder (710) facing away from the valve body (600); 19. The shock absorber (1) according to any one of claims 16 to 18, wherein the insulating cover (740) is attached to the guide wire mount (712) to seal and cover the guide wire slot (713).

21. The coil component (700) 21. The shock absorber (1) of claim 20, further comprising a metal cap (750), the metal cap (750) being attached to the end of the holder (710) facing away from the valve body (600) in contact with the hood body (800), the metal cap (750) being configured with a notch (751), and the guide wire base (712) being aligned with the notch (751).

22. The flow rate adjusting valve (300) An overflow valve body (310); an overflow valve seat (320); The overflow valve body (310) is movably attached to the valve body (600), the overflow valve seat (320) is attached to the valve body (600) and is positioned at an end of the overflow valve body (310) facing away from the pilot valve (500); the overflow valve seat (320) is provided with a first flow path (321) and a second flow path (322); the first flow path (321) and the second flow path (322) each communicate with the compression chamber (101) and the rebound chamber (102), respectively; and the minimum cross-sectional area of ​​the first flow path (321) is larger than the minimum cross-sectional area of ​​the second flow path (322); 22. The shock absorber (1) according to any one of claims 12 to 21, wherein when the valve core (400) moves, the movement of the overflow valve body (310) is controlled by the pilot valve (500), so that the first flow path (321) is opened and closed by using the overflow valve body (310).

23. An overflow chamber (323) communicating with the compression chamber (101) is formed in the overflow valve seat (320), a first through hole (324) is provided at an end of the overflow valve seat (320) facing the overflow valve body (310), and a second through hole (325) is provided at a side wall of the overflow valve seat (320), the overflow chamber (323) communicates with the rebound chamber (102) via the first through hole (324) and the second through hole (325), a cross-sectional area of ​​the first through hole (324) is larger than a cross-sectional area of ​​the second through hole (325), the overflow chamber (323) and the first through hole (324) form the first flow path (321), and the overflow chamber (323) and the second through hole (325) form the second flow path (322), 23. The shock absorber (1) according to claim 22, wherein the overflow valve body (310) opens and closes the first flow path (321) by opening and closing the first through hole (324).

24. 24. The shock absorber (1) according to claim 22 or 23, wherein an annular slot (311) is provided at an end of the overflow valve body (310) facing the overflow valve seat (320), and the outer peripheral wall of the annular slot (311) closes the first flow path (321) upon contact with the overflow valve seat (320), and the outer peripheral wall of the annular slot (311) opens the first flow path (321) upon separation from the overflow valve seat (320).

25. Further comprising a third elastic member (330); 25. The shock absorber (1) according to claim 24, wherein the overflow valve seat (320) has a support portion (326) at an end thereof facing the overflow valve body (310), the third elastic member (330) is a spring that exteriorly covers the inner wall of the annular slot (311), and two ends of the third elastic member (330) come into contact with the support portion (326) and the bottom wall of the annular slot (311), respectively, and the third elastic member (330) provides an elastic force to press the outer peripheral wall of the annular slot (311) to separate it from the overflow valve seat (320).

26. a central chamber (312) and an annular chamber (313) are defined between the end of the overflow valve body (310) facing away from the overflow valve seat (320) and the valve body (600), and the annular chamber (313) is provided around the central chamber (312); The overflow valve body (310) is provided with a third flow path (314) and a fourth flow path (315), the third flow path (314) communicating with the rebound chamber (102), the annular chamber (313), and the central chamber (312), respectively, and the fourth flow path (315) communicating with the first flow path (321) and the central chamber (312), respectively; 26. The shock absorber (1) of any one of claims 22 to 25, wherein the pilot valve (500) extends into the central chamber (312) and controls whether the central chamber (312) is in communication with the third flow path (314).

27. 27. The shock absorber (1) of claim 26, wherein the overflow valve body (310) is provided with a first sealing annular pedestal (316) at an end facing away from the overflow valve seat (320), and the valve body (600) is provided with a second sealing annular pedestal (606), one of the first sealing annular pedestal (316) and the second sealing annular pedestal (606) being fitted inside the other, and the first sealing annular pedestal (316) and the second sealing annular pedestal (606) together separating the central chamber (312) and the annular chamber (313).

28. The third flow path (314) a radial flow passage (314a); an axial central passage (314b); an axially eccentric flow path (314c); The radial flow passage (314a) extends along the radial direction of the overflow valve body (310), and the radial flow passage (314a) communicates with the rebound chamber (102); The axial central flow passage (314b) extends along the axial direction of the overflow valve body (310), and the radial flow passages (314a) communicate with the central chamber (312) via the axial central flow passage (314b); the axial eccentric flow passage (314c) extends along the axial direction of the overflow valve body (310), and the radial flow passage (314a) communicates with the annular chamber (313) via the axial eccentric flow passage (314c); 28. The shock absorber (1) according to claim 26 or 27, wherein the pilot valve (500) extends into the central chamber (312) to open and close the central axial passage (314b).

29. 29. The shock absorber (1) according to any one of claims 26 to 28, wherein a second via hole (607) is provided in the side wall of the valve body (600), the second via hole (607) communicating with the rebound chamber (102), the inner circumferential surface of the valve body (600) is provided with a flow passage annular slot (608) communicating with the first via hole (605), the flow passage annular slot (608) being closed by the outer circumferential surface of the overflow valve body (310), and the third flow passage (314) sequentially communicating with the rebound chamber (102) via the flow passage annular slot (608) and the second via hole (607).

30. The valve body further includes an insert (230), the insert (230) being attached to the piston valve body (220) and positioned at an end of the flow control valve (300) facing away from the pilot valve (500), the insert (230) being provided with a first insert flow path (231) and a second insert flow path (232), and the flow control valve (300) being in communication with the compression chamber (101) via the first insert flow path (231) and the second insert flow path (232); When the fluid flows from the flow control valve (300) to the compression chamber (101), the maximum flow velocity of the fluid in the first insert flow path (231) is greater than the maximum flow velocity of the fluid in the second insert flow path (232), 30. The shock absorber (1) of any one of claims 12 to 29, wherein when fluid flows from the compression chamber (101) to the flow control valve (300), the maximum flow velocity of the fluid in the second insert flow passage (232) is greater than the maximum flow velocity of the fluid in the first insert flow passage (231).

31. The first insert channel (231) a first perforation (233); a first restriction hole (236); The first bore (233) penetrates the insert (230), and one end of the first bore (233) communicates with the flow control valve (300); The insert (230) has a first convex edge (234) on one side facing away from the flow control valve (300), the first convex edge (234) surrounding the first perforation (233), the first throttle hole (236) formed in the first convex edge (234), the cross-sectional area of ​​the first perforation (233) being larger than the cross-sectional area of ​​the first throttle hole (236), and the other end of the first perforation (233) communicating with the flow control valve (300) through the first throttle hole (236); 31. The shock absorber (1) according to claim 30, wherein the insert (230) is provided at an end facing away from the flow regulating valve (300) with a first spring plate (240), which rests against the first convex edge (234) and seals and covers the first perforation (233).

32. The second insert channel (232) comprises: a second perforation (237); a second throttle hole (239); The second bore (237) penetrates the insert (230), and one end of the second bore (237) communicates with the compression chamber (101); The insert (230) has a second convex edge (238) on one side facing the flow control valve (300), the second convex edge (238) surrounding the second perforation (237), the second throttling hole (239) formed in the second convex edge (238), the cross-sectional area of ​​the second perforation (237) being larger than the cross-sectional area of ​​the second throttling hole (239), and the other end of the second perforation (237) communicating with the flow control valve (300) through the second throttling hole (239); 32. The shock absorber (1) according to claim 30 or 31, wherein a second spring plate (260) is provided on one side of the insert (230) facing the flow control valve (300), and the second spring plate (260) contacts the second convex edge (238) and seals and covers the second perforation (237).

33. a compression valve plate (270); and an adjusting sheet (280), The compression valve plate (270) rests against the end of the flow control valve (300) facing the insert (230), 33. The shock absorber (1) of claim 32, wherein the adjusting seat (280) is sandwiched between the compression valve plate (270) and the second spring plate (260), and the inner diameter of the adjusting seat (280) is larger than the inner diameter of the second spring plate (260).

34. Further comprising a bottom valve (130); The cylinder (100) comprises an outer cylinder (110) and an inner cylinder (120), the inner cylinder (120) extends into the outer cylinder (110), a liquid storage chamber (103) is formed between the outer cylinder (110) and the inner cylinder (120), the piston (200) is movably disposed in the inner cylinder (120) and divides the interior of the inner cylinder (120) into the compression chamber (101) and the rebound chamber (102), the bottom valve (130) is attached to at least one of the inner cylinder (120) and the outer cylinder (110), and the bottom valve (130) is provided with a first one-way flow path (131) and a second one-way flow path (132), 33. The shock absorber (1) according to any one of claims 1 to 32, wherein fluid in the compression chamber (101) flows into the liquid storage chamber (103) through the first unidirectional flow path (131), and fluid in the liquid storage chamber (103) flows into the compression chamber (101) through the second unidirectional flow path (132).

35. A vehicle (2) comprising a shock absorber (1) according to any one of claims 1 to 34.

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