CN219639325U - Shock absorber and vehicle with same - Google Patents

Abstract

The utility model discloses a shock absorber and a vehicle with the shock absorber, comprising: the valve body is provided with a built-in cavity; the overflow valve seat is connected with the valve body and fixed with the valve body in a relative position, and is provided with a communication channel which is respectively communicated with the compression cavity and the restoration cavity of the shock absorber; the overflow valve body is movably arranged in the built-in cavity and is positioned on one side of the overflow valve seat, which is opposite to the compression cavity, and the overflow valve body and the overflow valve seat are close to and far away from each other so as to adjust the fluid flow between the compression cavity and the recovery cavity; and the sealing ring is arranged between the inner peripheral wall of the built-in cavity and the outer peripheral surface of the overflow valve body. According to the shock absorber provided by the embodiment of the utility model, the processing precision is reduced, the tightness between the valve body and the overflow valve body is ensured, and the shock absorber has the advantages of low matching difficulty, low processing cost and the like.

Description

Shock absorber and vehicle with same

Technical Field

The utility model relates to the technical field of vibration absorbers, in particular to a vibration absorber and a vehicle with the same.

Background

The shock absorber in the related art generally includes an overflow valve seat and an overflow valve body, and the flow rates of the recovery cavity and the compression cavity are adjusted by controlling the approaching and separating between the overflow valve seat and the overflow valve body, but because the overflow valve body needs to move relative to the overflow valve seat and the structure of the overflow valve body is complex, the problems of poor tightness, complex structure, high processing precision, high processing cost and the like exist between the overflow valve seat and the overflow valve body.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a damper that can ensure tightness between a valve body and an overflow valve body while reducing machining accuracy, and has advantages of low difficulty in fitting, low machining cost, and the like.

The utility model further provides a vehicle with the shock absorber.

In order to achieve the above object, an embodiment according to a first aspect of the present utility model provides a shock absorber, including: the valve body is provided with a built-in cavity; the overflow valve seat is connected with the valve body and fixed with the valve body in a relative position, and is provided with a communication channel which is respectively communicated with the compression cavity and the restoration cavity of the shock absorber; the overflow valve body is movably arranged in the built-in cavity and is positioned on one side of the overflow valve seat, which is opposite to the compression cavity, and the overflow valve body and the overflow valve seat are close to and far away from each other so as to adjust the fluid flow between the compression cavity and the recovery cavity; and the sealing ring is arranged between the inner peripheral wall of the built-in cavity and the outer peripheral surface of the overflow valve body.

According to the shock absorber provided by the embodiment of the utility model, the processing precision is reduced, the tightness between the valve body and the overflow valve body is ensured, and the shock absorber has the advantages of low matching difficulty, low processing cost and the like.

According to some embodiments of the utility model, one of an inner peripheral wall of the internal cavity and an outer peripheral surface of the relief valve body is provided with a seal groove, and at least a part of the seal ring is provided in the seal groove.

According to some embodiments of the present utility model, a ring platform is configured on a side of the overflow valve body facing away from the overflow valve seat, the ring platform and an inner wall of the internal cavity define a central cavity and a ring cavity, the ring cavity is arranged around the central cavity, the central cavity is respectively communicated with the ring cavity and the communication channel of the overflow valve seat, and the ring cavity is communicated with the restoration cavity; wherein, the sealing ring is located between the annular cavity and the overflow valve seat in the moving direction of the overflow valve seat.

According to some embodiments of the utility model, the valve body has a via through which the annular chamber communicates with the recovery chamber; one end of the through hole, which is communicated with the annular cavity, is positioned on one side of the sealing ring, which is opposite to the overflow valve seat.

According to some embodiments of the utility model, the relief valve body has a first passage and a second passage, the first passage communicating with the annular chamber and the central chamber, respectively, an end of the first passage communicating with the annular chamber being located on a side of the sealing ring facing away from the relief valve seat, the second passage communicating with the central chamber and the relief valve seat, respectively; the pilot valve of the shock absorber stretches into the central cavity and controls whether the central cavity is communicated with the first channel or not.

According to some embodiments of the utility model, the first channel comprises: the radial flow passage extends along the radial direction of the overflow valve body, the radial flow passage is communicated with the annular cavity, and the end part of the radial flow passage, which is communicated with the annular cavity, is positioned at one side of the sealing ring, which is opposite to the overflow valve seat; the axial central flow passage extends along the axial direction of the overflow valve body, and the radial flow passage is communicated with the central cavity through the axial central flow passage; the pilot valve of the shock absorber stretches into the central cavity and opens and closes the axial central flow passage.

According to some embodiments of the utility model, the valve body comprises: the overflow valve body is movably matched with the first ring section, and the sealing ring is arranged between the inner peripheral wall of the first ring section and the outer peripheral surface of the overflow valve body; the second ring section, the second ring section connect in the one end of first ring section towards the overflow disk seat, the overflow disk seat with the second ring section is connected, the inside diameter of first ring section is less than the inside diameter of second ring section.

According to some embodiments of the utility model, the overflow valve body comprises: a first cylinder configured in a cylindrical shape, the seal ring being provided between an inner peripheral wall of the internal cavity and an outer peripheral surface of the first cylinder; the second post, the second post constructs cylindricly and connect in the one end of first post dorsad of overflow disk seat, the external diameter of first post is greater than the external diameter of second post.

According to some embodiments of the utility model, the communication passage of the relief valve seat includes a first flow passage and a second flow passage, each of the first flow passage and the second flow passage being in communication with the compression chamber and the recovery chamber, respectively, and the first flow passage being in communication with the second passage, a minimum cross-sectional area of the first flow passage being greater than a minimum cross-sectional area of the second flow passage; wherein the overflow valve body is moved relative to the overflow valve seat to adjust the flow rate of the first flow passage.

According to some embodiments of the present utility model, an overflow cavity communicating with the compression cavity is configured in the overflow valve seat, a first through hole is formed at one end of the overflow valve seat facing the overflow valve body, a second through hole is formed on the side wall of the overflow valve seat, the overflow cavity is communicated with the restoration cavity through the first through hole and the second through hole, the cross-sectional area of the first through hole is larger than that of the second through hole, the overflow cavity and the first through hole form the first flow channel, and the overflow cavity and the second through hole form the second flow channel; the overflow valve body moves relative to the first through hole so as to adjust the flow of the first flow channel.

According to some embodiments of the utility model, the shock absorber further comprises: a cylinder; the piston is movably arranged in the cylinder body, the piston separates a compression cavity and a restoration cavity in the cylinder body, and the valve body is connected with the piston; the valve core is movably arranged on the piston, the pilot valve is connected to the valve core, and the overflow valve body is controlled by the pilot valve when the valve core moves so as to move relative to the overflow valve seat.

According to a second aspect of the utility model an embodiment is presented of a vehicle comprising a shock absorber according to the first aspect of the utility model.

According to the vehicle of the second aspect of the embodiment of the utility model, by using the shock absorber of the first aspect of the embodiment of the utility model, the sealing performance between the valve body and the overflow valve body can be ensured while the machining precision is reduced, and the shock absorber has the advantages of low matching difficulty, low machining cost and the like.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a shock absorber according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a shock absorber according to another embodiment of the present utility model.

Fig. 3 is a schematic structural view of an overflow valve body of a shock absorber according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of another view of an overflow valve body of a shock absorber according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of an overflow valve body of a shock absorber according to an embodiment of the utility model.

Fig. 6 is a cross-sectional view of another perspective of an overflow valve body of a shock absorber according to an embodiment of the utility model.

Fig. 7 is a schematic structural view of an overflow valve body of a shock absorber according to another embodiment of the present utility model.

Fig. 8 is a cross-sectional view of an overflow valve body of a shock absorber according to another embodiment of the utility model.

Fig. 9 is a cross-sectional view of another perspective of an overflow valve body of a shock absorber according to another embodiment of the utility model.

Fig. 10 is a cross-sectional view of a valve body of a shock absorber according to an embodiment of the present utility model.

Fig. 11 is a schematic structural view of a valve body of a shock absorber according to another embodiment of the present utility model.

Fig. 12 is a cross-sectional view of a valve body of a shock absorber according to another embodiment of the present utility model.

Reference numerals:

a shock absorber 1,

Relief valve seat 100, first flow passage 110, second flow passage 120, relief chamber 130, first through hole 140, second through hole 150,

The overflow valve body 200, the first column 201, the second column 202, the central cavity 210, the annular cavity 220, the first channel 230, the radial flow channel 231, the axial central flow channel 232, the second channel 240, the annular platform 290,

Seal ring 300, piston 400, valve core 500, pilot valve 600,

Valve body 700, internal cavity 710, seal groove 720, via 730, first ring segment 740, and second ring segment 750.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, "plurality" means two or more.

A shock absorber 1 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the shock absorber 1 according to the embodiment of the present utility model includes a valve body 700, an overflow valve seat 100, an overflow valve body 200, and a seal ring 300.

The valve body 700 is provided with a built-in chamber 710, the overflow valve seat 100 is connected with the valve body 700 and is fixed in relative position with the valve body 700, the overflow valve seat 100 is constructed with a communication channel which is respectively communicated with a compression chamber and a restoration chamber of the shock absorber 1, the overflow valve body 200 is movably arranged at the side of the built-in chamber 710, which is away from the compression chamber, of the overflow valve seat 100, the overflow valve body 200 and the overflow valve seat 100 are mutually close to and far away from each other to adjust the fluid flow between the compression chamber and the restoration chamber, and the sealing ring 300 is arranged between the inner peripheral wall of the built-in chamber 710 and the outer peripheral surface of the overflow valve body 200.

For example, the sealing ring 300 may include at least one of a rubber member, a plastic member, and a soft rubber member. In addition, the valve body 700 may be made of a magnetic material, and when the coil of the shock absorber 1 is energized, the valve core 500 has magnetism and magnetic attraction with the valve body 700, so that the valve core 500 moves in a direction approaching the valve body 700, the valve core 500 pushes the pilot valve 600 to move, and the pilot valve 600 pushes the overflow valve body 200 to move in a direction approaching the overflow valve seat 100, so as to reduce the flow rate of the first flow passage 110.

Specifically, the shock absorber 1 further includes a cylinder, a piston 400, a valve spool 500, and a pilot valve 600. The piston 400 is movably provided to the cylinder, the piston 400 is divided into a compression chamber and a recovery chamber in the cylinder, the valve body 700 is connected to the piston 400, the valve body 500 is movably provided to the piston 400, the pilot valve 600 is connected to the valve body 500, and the overflow valve body 200 is controlled by the pilot valve 600 to move relative to the overflow valve seat 100 when the valve body 500 moves.

For example, the compression and recovery chambers may store fluids, such as oil and inert gas at a pressure.

The working principle of the shock absorber 1 is described by way of example with reference to the accompanying drawings:

when the piston 400 compresses the volume of the compression chamber, the volume of the recovery chamber will increase along with the volume of the recovery chamber, at this time, the fluid in the compression chamber will flow to the recovery chamber through the communication channel of the overflow valve seat 100, when the piston 400 compresses the volume of the recovery chamber, the volume of the compression chamber will increase along with the volume of the recovery chamber, at this time, the fluid in the recovery chamber will flow to the compression chamber through the communication channel of the overflow valve seat 100, in the above process, by repeatedly changing the moving direction of the piston 400, the fluid repeatedly flows between the compression chamber and the recovery chamber, the fluid generates heat with the friction of the shock absorber 1, the kinetic energy of the piston 400 can be converted into the thermal energy of the fluid, thereby reducing the power of the piston 400.

As is clear from this, when the cylinder body and the piston 400 of the shock absorber 1 are connected to two objects (for example, a frame and a wheel), and when one of the two objects vibrates, the vibration force transmitted to the other object can be reduced by the presence of the shock absorber 1, and the shock absorbing effect can be obtained.

According to the shock absorber 1 of the embodiment of the present utility model, by providing the built-in chamber 710 on the valve body 700, the relief valve body 200 is movably provided to the built-in chamber 710 at a side of the relief valve seat 100 facing away from the compression chamber, and the seal ring 300 is provided between an inner peripheral wall of the built-in chamber 710 and an outer peripheral surface of the relief valve body 200.

The valve body 700 may define axial movement of the relief valve body 200 along the valve body 700, and the seal ring 300 is used for sealing a gap between the valve body 700 and the relief valve body 200, and since the relief valve body 200 needs to move relative to the valve body 700 and the relief valve body 200 needs to maintain reliable sealing with the valve body 700, the processing requirements on the relief valve body 200 and the valve body 700 are higher, so that by setting the seal ring 300, the processing precision of the valve body 700 and the relief valve body 200 can be reduced, the matching difficulty and the processing cost can be reduced, the sealing effect between the relief valve body 200 and the valve body 700 can be improved while the relief valve body 200 can move relative to the valve body 700, which is beneficial to balancing the pressure between the recovery cavity and the compression cavity, so as to optimize the vibration damping effect of the shock absorber 1.

Thus, the shock absorber 1 according to the embodiment of the utility model can ensure the tightness between the valve body 700 and the overflow valve body 200 while reducing the processing precision, and has the advantages of low matching difficulty, low processing cost and the like.

According to some embodiments of the present utility model, as shown in fig. 7 to 9, 11 and 12, one of the inner circumferential wall of the internal cavity 710 and the outer circumferential surface of the relief valve body 200 is provided with a seal groove 720, and at least a portion of the seal ring 300 is provided in the seal groove 720.

In this way, the seal ring 300 and the relief valve body 200 can be fixed, or the seal ring 300 and the valve body 700 can be fixed, and the position of the seal ring 300 is more stable, so that the shock absorber 1 can be assembled.

According to some embodiments of the present utility model, as shown in fig. 1-9, a ring 290 is configured on a side of the overflow valve body 200 facing away from the overflow valve seat 100, the ring 290 and an inner wall of the internal cavity 710 define a central cavity 210 and a ring cavity 220, the ring cavity 220 is disposed around the central cavity 210, the central cavity 210 is respectively communicated with the ring cavity 220 and the overflow valve seat 100, and the ring cavity 220 is communicated with the restoring cavity.

The overflow valve body 200 has a first passage 230 and a second passage 240, the first passage 230 communicates with the annular chamber 220 and the central chamber 210, respectively, an end of the first passage 230 communicating with the annular chamber 220 is located at a side of the sealing ring 300 facing away from the overflow valve seat 100, and the second passage 240 communicates with the central chamber 210 and the communication passage of the overflow valve seat 100, respectively, wherein the pilot valve 600 of the shock absorber 1 extends into the central chamber 210 and controls whether the central chamber 210 communicates with the first passage 230.

Thus, when the coil of the shock absorber 1 is energized and the fluid in the recovery chamber flows into the compression chamber, the pilot valve 600 is stopped against the first channel 230 under the pushing of the valve core 500 to prevent the communication between the central chamber 210 and the first channel 230, and the pilot valve 600 pushes the relief valve seat 100 to move towards the relief valve body 200, so that the relief valve body 200 is stopped against the relief valve seat 100, the fluid in the recovery chamber flows into the annular chamber 220 first and then flows into the first channel 230 through the annular chamber 220, when the fluid in the annular chamber 220 is stored to a certain amount, the pressure in the first channel 230 is continuously increased along with the continuous flow of the fluid in the recovery chamber into the annular chamber 220, and when the pressure in the first channel 230 is greater than the magnetic force received by the valve core 500, the pilot valve 600 is pushed to enable the communication between the central chamber 210 and the first channel 230, and the fluid in the first channel 230 flows into the communication channel 210 from the second channel 240 to the relief valve seat 100, at this time, and the damping of the shock absorber 1 is reduced.

According to some embodiments of the present utility model, as shown in fig. 1 and 2, a seal ring 300 is positioned between the annular chamber 220 and the relief valve seat 100 in the moving direction of the relief valve body 200. That is, the seal ring 300 is located between the ring chamber 220 and the relief valve seat 100 in the axial direction of the relief valve body 200.

In this way, the seal ring 300 can separate the annular cavity 220 and the overflow valve seat 100, that is, the fluid in the annular cavity 220 cannot flow to the overflow valve seat 100 through the gap between the overflow valve body 200 and the valve body 700, so that the tightness of the annular cavity 220 is ensured, the pressures of the annular cavity 220, the central cavity 210 and the overflow valve seat 100 can be balanced more effectively, the flow rate of the fluid between the recovery cavity and the compression cavity can be controlled effectively, and the vibration reduction effect of the vibration absorber 1 is better.

According to some embodiments of the present utility model, as shown in fig. 1 and 2 and fig. 10-12, the valve body 700 has a through hole 730, and the annular cavity 220 communicates with the restoring cavity through the through hole 730, wherein an end of the through hole 730 communicating with the annular cavity 220 is located on a side of the sealing ring 300 facing away from the relief valve seat 100.

In this way, the sealing ring 300 can seal one end of the via hole 730, which is communicated with the annular cavity 220, so that the sealing effect of the annular cavity 220 is improved, and the vibration damping effect of the vibration damper 1 is further improved.

According to some embodiments of the present utility model, as shown in fig. 3-9, the first channel 230 includes a radial flow channel 231 and an axial center flow channel 232.

The radial flow channel 231 extends along the radial direction of the overflow valve body 200, the radial flow channel 231 is communicated with the annular cavity 220, the end part of the radial flow channel 231 communicated with the annular cavity 220 is positioned on one side of the sealing ring 300, which is opposite to the overflow valve seat 100, the axial central flow channel 232 extends along the axial direction of the overflow valve body 200, and the radial flow channel 231 is communicated with the central cavity 210 through the axial central flow channel 232. Wherein the pilot valve 600 of the shock absorber 1 extends into the central chamber 210 and opens and closes the axial central flow passage 232.

For example, both ends of the radial flow path 231 may penetrate the outer circumferential surface of the relief valve body 200, increasing the communication area between the radial flow path 231 and the annular chamber 220.

In this way, the radial flow path 231 can conveniently communicate with the axial central flow path 232 and the annular chamber 220 at the same time, the fluid in the radial flow path 231 can flow into the annular chamber 220, the fluid in the radial flow path 231 flows into the central chamber 210 through the axial central flow path 232, and the pilot valve 600 can break the connection between the first passage 230 and the central chamber 210 by closing the axial central flow path 232.

In addition, since the end of the radial flow channel 231 communicating with the annular cavity 220 is located at the side of the sealing ring 300 facing away from the relief valve seat 100, the sealing ring 300 can seal the end of the radial flow channel 231 communicating with the annular cavity 220, so that the sealing effect of the annular cavity 220 is improved, and the vibration reduction effect of the vibration damper 1 is further improved.

According to some embodiments of the present utility model, as shown in fig. 10-12, the valve body 700 includes a first ring segment 740 and a second ring segment 750.

The overflow valve body 200 is movably matched with the first ring section 740, the sealing ring 300 is arranged between the inner peripheral wall of the first ring section 740 and the outer peripheral surface of the overflow valve body 200, the second ring section 750 is connected with one end of the first ring section 740 facing the overflow valve seat 100, the overflow valve seat 100 is connected with the second ring section 750, and the inner diameter of the first ring section 740 is smaller than that of the second ring section 750.

In this way, the inner peripheral surface of the first ring segment 740 and the outer peripheral surface of the overflow valve body 200 can be in sealing fit, and the movement of the overflow valve body 200 is guided, so that the overflow valve body 200 moves along the axial direction of the overflow valve body 200, and the sealing ring 300 is used for sealing the gap between the first ring segment 740 and the overflow valve body 200, the sealing ring 300 plays a role in reinforcing sealing on the inner peripheral surface of the first ring segment 740 and the outer peripheral surface of the overflow valve body 200, the difference between the inner diameter and the outer diameter of the sealing ring 300 can be smaller, and the processing cost is reduced.

According to some embodiments of the present utility model, as shown in fig. 3-9, the overflow valve body 200 includes a first cylinder 201 and a second cylinder 202.

The first cylinder 201 is configured in a cylindrical shape, the sealing ring 300 is provided between an inner circumferential wall of the internal cavity 710 and an outer circumferential surface of the first cylinder 201, and the second cylinder 202 is configured in a cylindrical shape and is connected to an end of the first cylinder 201 facing away from the overflow valve seat 100, the outer diameter of the first cylinder 201 being larger than the outer diameter of the second cylinder 202.

In this way, the inner peripheral surface of the valve body 700 and the outer peripheral surface of the first cylinder 201 can be in sealing engagement, and the movement of the relief valve body 200 is guided, so that the relief valve body 200 moves along the axial direction of the relief valve body 200, and the seal ring 300 is used for sealing the gap between the first cylinder 201 and the valve body 700, the seal ring 300 plays a role in reinforcing the sealing between the outer peripheral surface of the first cylinder 201 and the inner peripheral surface of the valve body 700, the difference between the inner diameter and the outer diameter of the seal ring 300 can be smaller, and the processing cost can be reduced.

According to some embodiments of the present utility model, as shown in fig. 1-2, the communication channel of the relief valve seat 100 includes a first flow channel 110 and a second flow channel 120, each of the first flow channel 110 and the second flow channel 120 is respectively communicated with the compression chamber and the recovery chamber, and the first flow channel 110 is communicated with the second flow channel 240, and the minimum cross-sectional area of the first flow channel 110 is larger than the minimum cross-sectional area of the second flow channel 120. Wherein the relief valve body 200 adjusts the flow rate of the first flow passage 110 by moving with respect to the relief valve seat 100.

By providing the first flow passage 110 and the second flow passage 120, and by moving the relief valve body 200 relative to the relief valve seat 100, the flow rate of the first flow passage 110 can be regulated, and thus the flow rate of the fluid between the compression chamber and the recovery chamber can be changed to balance the pressure between the compression chamber and the recovery chamber. For example, when the relief valve body 200 and the relief valve seat 100 are relatively close to reduce the flow rate of the first flow passage 110, the compression chamber and the recovery chamber are mainly communicated through the second flow passage 120, and the flow rate of the liquid between the compression chamber and the recovery chamber is slow; when the relief valve body 200 and the relief valve seat 100 are relatively far apart to increase the flow rate of the first flow passage 110, the compression chamber and the recovery chamber are communicated through the first flow passage 110 and the second flow passage 120, and at this time, the flow rate of the liquid between the compression chamber and the recovery chamber is relatively high.

According to some embodiments of the present utility model, as shown in fig. 1 and 2, an overflow chamber 130 communicating with the compression chamber is configured in the overflow valve seat 100, a first through hole 140 is provided at an end of the overflow valve seat 100 facing the overflow valve body 200, a second through hole 150 is provided at a sidewall of the overflow valve seat 100, the overflow chamber 130 communicates with the recovery chamber through the first through hole 140 and the second through hole 150, a cross-sectional area of the first through hole 140 is larger than a cross-sectional area of the second through hole 150, the overflow chamber 130 and the first through hole 140 form a first flow passage 110, and the overflow chamber 130 and the second through hole 150 form a second flow passage 120. Wherein, the overflow valve body 200 adjusts the flow rate of the first flow passage 110 by moving with respect to the first through hole 140.

In this way, the first flow passage 110 and the second flow passage 120 share the overflow chamber 130, so that the processing steps of the overflow valve seat 100 are reduced, the production efficiency of the overflow valve seat 100 is improved, and the first through hole 140 is configured at one end of the overflow valve seat 100 facing the overflow valve body 200, so that the overflow valve body 200 is convenient to cover the first through hole 140.

In addition, the second through hole 150 is formed on the sidewall of the overflow valve seat 100, that is, the first through hole 140 and the second through hole 150 are located on different sidewalls of the overflow valve seat 100, so that the second through hole 150 is not closed by mistake when the overflow valve body 200 opens and closes the first through hole 140, and the second through hole 150 can still circulate normally, thereby improving the reliability of the second flow passage 120.

A vehicle according to an embodiment of the present utility model, which includes the shock absorber 1 according to the above-described embodiment of the present utility model, is described below with reference to the drawings.

According to the vehicle of the embodiment of the utility model, by using the shock absorber 1 according to the above embodiment of the utility model, the sealability between the valve body 700 and the overflow valve body 200 can be ensured while the processing accuracy is reduced, and the advantages of low matching difficulty, low processing cost and the like are achieved.

The operation of the shock absorber 1 is described below by way of example with reference to the accompanying drawings, in which the shock absorber 1 is applied to a vehicle:

wherein the shock absorber 1 can be mounted on a wheel axle.

When the vehicle runs on a relatively flat road surface, the coil of the shock absorber 1 can be not electrified, at the moment, the overflow valve seat 100 and the overflow valve body 200 are separated, when the vehicle body and the vehicle wheel vibrate relatively, the piston 400 moves relative to the cylinder body, if the piston 400 compresses the compression cavity, fluid in the compression cavity flows into the recovery cavity through the first flow passage 110 and the second flow passage 120, and in the state, the flow rate of the fluid is large and the damping is small, and the shock absorber 1 is soft;

if the piston 400 compresses the rebound chamber, the fluid in the rebound chamber flows into the compression chamber through the first and second flow passages 110 and 120, and the fluid flow rate is large and the damping is small in this state, the shock absorber 12 exhibits "soft".

By the reciprocating movement of the piston 400, the fluid reciprocally flows in the compression chamber and the recovery chamber with a large flow rate, and the fluid damping is small, so that riding comfort is good.

When the vehicle runs on a road surface with a hollow uneven surface, the coil of the shock absorber 1 can be electrified, at the moment, the overflow valve seat 100 and the overflow valve body 200 are close, when the vehicle body and the vehicle wheel vibrate relatively, the piston 400 in the shock absorber 1 moves relative to the vehicle body, if the piston 400 compresses the compression cavity, the piston 400 firstly flows into the restoration cavity through the second flow channel 120, the flow rate of fluid is smaller and the damping is large in the state, the shock absorber 1 is hard, then the fluid can be accumulated in a large amount in the overflow cavity 130 of the overflow valve seat 100, the pressure in the overflow cavity 130 is increased, when the pressure is larger than the magnetic attraction force exerted by the valve core 500, the overflow valve seat 100 and the overflow valve body 200 are separated, the fluid can flow into the restoration cavity through the first flow channel 110 and the second flow channel 120, and the flow rate of the fluid is larger and the damping is small in the state;

if the piston 400 compresses the restoring chamber, the fluid in the restoring chamber flows into the compressing chamber through the second flow passage 120, the flow rate of the fluid is smaller and the damping is large in this state, the shock absorber 1 is hard, then the fluid flows into the first passage 230, the pilot valve 600 is pushed open until the pressure in the first passage 230 is greater than the magnetic attraction force applied to the valve core 500, the first passage 230 is communicated with the central chamber 210, the fluid in the first passage 230 flows into the second passage 240 through the central chamber 210, the damping is reduced, finally the fluid is largely accumulated in the overflow chamber 130 of the overflow valve seat 100, the pressure in the overflow chamber 130 is increased, when the pressure is greater than the magnetic attraction force applied to the valve core 500, the overflow valve seat 100 and the overflow valve body 200 are separated, the fluid can flow from the first flow passage 110 to the restoring chamber, and the flow rate of the fluid is further increased and the damping is further reduced in this state.

By the reciprocating movement of the piston 400, the fluid reciprocally flows in the compression chamber and the recovery chamber, the flow rate is repeatedly changed, and the fluid damping is repeatedly changed, so that riding comfort is improved.

Other constructions and operations of the shock absorber 1 and the vehicle having the same according to the embodiment of the present utility model are known to those of ordinary skill in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A shock absorber, comprising:

the valve body is provided with a built-in cavity;

the overflow valve seat is connected with the valve body and fixed with the valve body in a relative position, and is provided with a communication channel which is respectively communicated with the compression cavity and the restoration cavity of the shock absorber;

the overflow valve body is movably arranged in the built-in cavity and is positioned on one side of the overflow valve seat, which is opposite to the compression cavity, and the overflow valve body and the overflow valve seat are close to and far away from each other so as to adjust the fluid flow between the compression cavity and the recovery cavity;

and the sealing ring is arranged between the inner peripheral wall of the built-in cavity and the outer peripheral surface of the overflow valve body.

2. The shock absorber according to claim 1, wherein one of an inner peripheral wall of said internal chamber and an outer peripheral surface of said relief valve body is provided with a seal groove, and at least a portion of said seal ring is provided in said seal groove.

3. The shock absorber of claim 1 wherein a land is constructed on a side of said relief valve body facing away from said relief valve seat, said land and an inner wall of said internal cavity defining a central cavity and a ring cavity, said ring cavity being disposed about said central cavity, said central cavity being in communication with said communication passages of said ring cavity and said relief valve seat, respectively, said ring cavity being in communication with said recovery cavity;

the sealing ring is positioned between the annular cavity and the overflow valve seat in the moving direction of the overflow valve body.

4. A shock absorber according to claim 3, wherein said valve body has a through bore through which said annular chamber communicates with said rebound chamber;

one end of the through hole, which is communicated with the annular cavity, is positioned on one side of the sealing ring, which is opposite to the overflow valve seat.

5. A shock absorber according to claim 3, wherein the relief valve body has a first passage and a second passage, the first passage communicating with the annular chamber and the central chamber respectively, an end of the first passage communicating with the annular chamber being located on a side of the sealing ring facing away from the relief valve seat, the second passage communicating with the central chamber and the relief valve seat respectively;

the pilot valve of the shock absorber stretches into the central cavity and controls whether the central cavity is communicated with the first channel or not.

6. The shock absorber of claim 5 wherein said first passage comprises:

the radial flow passage extends along the radial direction of the overflow valve body, the radial flow passage is communicated with the annular cavity, and the end part of the radial flow passage, which is communicated with the annular cavity, is positioned at one side of the sealing ring, which is opposite to the overflow valve seat;

the axial central flow passage extends along the axial direction of the overflow valve body, and the radial flow passage is communicated with the central cavity through the axial central flow passage;

the pilot valve of the shock absorber stretches into the central cavity and opens and closes the axial central flow passage.

7. The shock absorber of claim 1 wherein said valve body comprises:

the overflow valve body is movably matched with the first ring section, and the sealing ring is arranged between the inner peripheral wall of the first ring section and the outer peripheral surface of the overflow valve body;

the second ring section, the second ring section connect in the one end of first ring section towards the overflow disk seat, the overflow disk seat with the second ring section is connected, the inside diameter of first ring section is less than the inside diameter of second ring section.

8. The shock absorber of claim 1 wherein said relief valve body comprises:

a first cylinder configured in a cylindrical shape, the seal ring being provided between an inner peripheral wall of the internal cavity and an outer peripheral surface of the first cylinder;

the second post, the second post constructs cylindricly and connect in the one end of first post dorsad of overflow disk seat, the external diameter of first post is greater than the external diameter of second post.

9. The shock absorber of claim 5 wherein said communication passage of said relief valve seat comprises a first flow passage and a second flow passage, each of said first flow passage and said second flow passage being in communication with said compression chamber and said recovery chamber, respectively, and said first flow passage being in communication with said second passage, said first flow passage having a minimum cross-sectional area greater than a minimum cross-sectional area of said second flow passage;

wherein the overflow valve body is moved relative to the overflow valve seat to adjust the flow rate of the first flow passage.

10. The shock absorber of claim 9 wherein an overflow chamber is configured in said overflow valve seat and communicates with said compression chamber, a first through hole is provided at an end of said overflow valve seat facing said overflow valve body, a second through hole is provided at a side wall of said overflow valve seat, said overflow chamber communicates with said recovery chamber through said first through hole and said second through hole, a cross-sectional area of said first through hole is larger than a cross-sectional area of said second through hole, said overflow chamber and said first through hole form said first flow passage, and said overflow chamber and said second through hole form said second flow passage;

the overflow valve body moves relative to the first through hole so as to adjust the flow of the first flow channel.

11. The shock absorber according to any of claims 1-10, further comprising:

a cylinder;

the piston is movably arranged in the cylinder body, the piston separates a compression cavity and a restoration cavity in the cylinder body, and the valve body is connected with the piston;

the valve core is movably arranged on the piston, the pilot valve is connected to the valve core, and the overflow valve body is controlled by the pilot valve when the valve core moves so as to move relative to the overflow valve seat.

12. A vehicle comprising a shock absorber according to any one of claims 1-11.