CN219176858U

CN219176858U - Control valve, shock absorber and vehicle

Info

Publication number: CN219176858U
Application number: CN202223552990.9U
Authority: CN
Inventors: 卢音波
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-13
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a control valve, a shock absorber and a vehicle, wherein the control valve comprises: the movable valve core is provided with a first air passage, and the first air passage is communicated with the space at two sides of the moving direction of the valve core; the first one-way valve is arranged in the first air passage and enables the gas in the first air passage to be conducted unidirectionally along the first air passage. The control valve provided by the embodiment of the utility model can keep the air pressure balance of the space at two sides of the moving direction, and has the advantages of high integration level, stable movement and the like.

Description

Control valve, shock absorber and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a control valve, a shock absorber and a vehicle.

Background

The shock absorber on the automobile mainly comprises a spring, a piston rod and a cylinder body, when the automobile passes through an uneven road surface, the spring can vibrate back and forth after absorbing shock, the shock absorber mainly inhibits the vibration of the spring, the shock absorber is too soft, the automobile body can vibrate up and down, the shock absorber is too hard to cause too large resistance, in the related art, the damping of the shock absorber is usually adjusted and then the shock absorber is installed, but the road surface for driving the automobile is complex; when the automobile runs at a high speed, the automobile is required to be damped hard to provide larger damping so as to avoid unstable automobile body caused by wind resistance; when the automobile runs on an uneven road, the shock absorber is required to be softer to provide smaller damping so as to fully absorb the vibration caused by the uneven road; the valve core of the control valve of the shock absorber in the prior art can move back and forth along the axial direction of the valve core, and the air passages are arranged on the control valve to balance the air pressure at two ends of the control valve, however, the structure of the control valve is complex due to unreasonable structure arrangement of the air passages, and the stability of the valve core during movement is poor.

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 control valve capable of maintaining the air pressure balance of the space on both sides in the moving direction, which has the advantages of high integration level and stable movement.

The utility model also provides a shock absorber with the control valve.

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 proposes a control valve comprising: the movable valve core is provided with a first air passage, and the first air passage is communicated with the space at two sides of the moving direction of the valve core; the first one-way valve is arranged in the first air passage and enables the gas in the first air passage to be conducted unidirectionally along the first air passage.

The control valve provided by the embodiment of the utility model can keep the air pressure balance of the space at two sides of the moving direction, and has the advantages of high integration level, stable movement and the like.

According to some embodiments of the utility model, the first check valve comprises: a first valve plug having a first through hole in communication with the first gas passage; a first control member located inside the first valve plug within the first airway; the first elastic piece is arranged between the first valve plug and the first control piece, and the first control piece is stopped against the inner wall of the first air passage and closes the first air passage under the elasticity of the first elastic piece.

According to some embodiments of the utility model, the first control member is configured as a sphere; a first plane is formed on one side of the first valve plug facing the first control piece, and the first plane is arranged around the first through hole; the first elastic piece is a conical spiral spring with a large ring end and a small ring end, the large ring end of the first elastic piece is abutted against the first plane, and the small ring end of the first elastic piece is abutted against the first control piece.

According to some embodiments of the utility model, an inner peripheral surface of the first air passage is configured with a first step, the first step is located at a side of the first control member away from the first valve plug, and the first control member is abutted against the first step under the elastic force of the first elastic member.

According to some embodiments of the utility model, the first step is configured with a first slope inclined with respect to a central axis of the first air passage, the first slope being disposed around the first control member, the first control member abutting against the first slope.

According to some embodiments of the utility model, the control valve further comprises: the pilot valve is arranged on the valve core, the spaces at two sides of the valve core in the moving direction are also communicated through a second air passage, one part of the second air passage is constructed on the valve core, and the other part of the second air passage is constructed on the pilot valve; the second one-way valve is arranged in the part of the second air passage, which is constructed in the pilot valve, and enables the gas in the second air passage to be conducted unidirectionally along the second air passage.

According to some embodiments of the utility model, the two sides of the moving direction of the valve core are respectively provided with a first space and a second space; the first one-way valve only allows gas to flow from the first space to the second space along the first gas path; the second one-way valve allows gas to flow only from the second space to the first space along the second gas path.

According to some embodiments of the utility model, the second check valve comprises: a second valve plug having a second through bore in communication with the second airway; the second elastic piece is positioned at one side of the second valve plug, which is opposite to the valve core, in the second air passage and is abutted against the inner wall of the second air passage; the second control piece is arranged between the second valve plug and the second elastic piece, and the second control piece is abutted to the second valve plug and seals the second through hole under the elasticity of the second elastic piece.

According to some embodiments of the utility model, the inner peripheral surface of the second air passage is configured with a second step, the second step is located at a side of the second elastic member away from the second valve plug, and the second elastic member abuts against the second step.

According to some embodiments of the utility model, the second control member is configured as a sphere; a second plane is formed on one side of the second step, which faces the second elastic piece, and the second plane is arranged around the second air passage; the second elastic piece is a conical spiral spring with a large ring end and a small ring end, the large ring end of the second elastic piece is abutted against the second plane, and the small ring end of the second elastic piece is abutted against the second control piece.

According to some embodiments of the utility model, the second valve plug is configured with a second slope inclined with respect to a central axis of the second air passage, the second slope being disposed around the second control member, the second control member abutting against the second slope.

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

According to the damper of the second aspect of the embodiment of the present utility model, by using the control valve according to the first aspect of the embodiment of the present utility model, the air pressure balance of the space on both sides in the moving direction can be maintained, and there are advantages of high integration level, stable movement, and the like.

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

According to the vehicle of the embodiment of the third aspect of the present utility model, by using the damper according to the embodiment of the second aspect of the present utility model, the air pressure balance of the space on both sides in the moving direction can be maintained, and there are advantages of high integration level, stable movement, 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 cross-sectional view of a control valve according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a spool of a control valve according to an embodiment of the present utility model.

FIG. 3 is a cross-sectional view of a pilot valve and a second one-way valve of a control valve according to an embodiment of the present utility model.

FIG. 4 is a cross-sectional view of a pilot valve of a control valve according to an embodiment of the present utility model.

FIG. 5 is a schematic diagram of a second valve plug of a control valve according to an embodiment of the present utility model.

Fig. 6 is a schematic structural view of a first elastic member of a control valve according to an embodiment of the present utility model.

Reference numerals:

a control valve 1,

Valve element 100, first air passage 110, first step 111, first inclined surface 112,

A first check valve 200, a first valve plug 210, a first through hole 211, a first plane 212, a first control member 220, a first elastic member 230,

Pilot valve 300, second air passage 310, second step 311, second plane 312,

A second check valve 400, a second valve plug 410, a second through hole 411, a second inclined surface 412, a second elastic member 420, a second control member 430,

The first space 500 and the second space 600.

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 control valve 1 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, a control valve 1 according to an embodiment of the present utility model includes a movable spool 100 and a first check valve 200.

The valve core 100 is configured with a first air passage 110, the first air passage 110 is communicated with the space at two sides of the moving direction of the valve core 100, the first one-way valve 200 is arranged in the first air passage 110, and the air in the first air passage 110 is conducted unidirectionally along the first air passage 110.

For example, the control valve 1 of the embodiment of the present utility model may be a solenoid valve, and the valve core 100 may have magnetism when the coil is energized.

According to the control valve 1 of the embodiment of the utility model, the first air passage 110 is configured on the valve core 100, and the first air passage 110 is communicated with the spaces on both sides of the moving direction of the valve core 100, so that the control valve 1 can balance the air pressure of the spaces on both sides of the moving direction of the valve core 100 by using the first air passage 110, and the resistance to the movement of the valve core 100 caused by the pressure difference of the air pressure of the spaces on both sides of the moving direction of the valve core 100 is avoided, so that the movement of the valve core 100 is more stable and easier.

Moreover, through setting up first air flue 110 on case 100, need not to arrange additional spare part for first air flue 110, first air flue 110 can run through the terminal surface of the both sides of case 100 direction of movement, the integrated level of case 100 is higher, be favorable to reducing the volume of control valve 1, and then can simplify the structure of control valve 1, in addition, with first air flue 110 on case 100, when case 100 moves, first air flue 110 can follow case 100 and move together, thereby make first air flue 110 can remain the intercommunication with the space of the both sides of the direction of movement of case 100 all the time, the space air current circulation of the both sides of the direction of movement of case 100 is more unobstructed, more be favorable to balancing the atmospheric pressure of the space of the both sides of the direction of movement of case 100.

In addition, the first check valve 200 is disposed in the first air passage 110, and makes the air in the first air passage 110 conduct unidirectionally along the first air passage 110, so that the first check valve 200 can control the flow direction of the air in the first air passage 110, for example, the first check valve 200 can only allow the air to flow from one side space to the other side space in the moving direction of the valve core 100, or the first check valve 200 can only allow the air to flow from the other side space to the one side space in the moving direction of the valve core 100, thereby controlling the air pressure balance at both sides in the moving direction of the valve core 100 and ensuring the stability of the moving direction of the valve core 100.

In addition, the first check valve 200 limits the air flow direction in the first air passage 110, so that the change of the air flow direction in the first air passage 110 can be avoided, and the valve core 100 can be stably moved along one direction, meanwhile, the first check valve 200 can limit the air flow in the first air passage 110, so that the air flow on one side of the moving direction of the valve core 100 slowly flows to the other side, and the air pressure of the space on one side of the moving direction of the valve core 100 can be slowly reduced to be equal to the air pressure of the space on the other side of the moving direction of the valve core 100 when the valve core 100 moves, and a certain damping force can be provided when the valve core 100 moves, so that the movement of the valve core 100 is smoother.

Thus, the control valve 1 according to the embodiment of the utility model can keep the air pressure balance of the space at both sides of the moving direction, and has the advantages of high integration level, stable movement and the like.

In some embodiments of the present utility model, as shown in FIG. 1, the first check valve 200 includes a first valve plug 210, a first control member 220, and a first resilient member 230.

The first valve plug 210 has a first through hole 211 communicating with the first air passage 110, the first control member 220 is located inside the first valve plug 210 in the first air passage 110, the first elastic member 230 is disposed between the first valve plug 210 and the first control member 220, and the first control member 220 abuts against the inner wall of the first air passage 110 under the elastic force of the first elastic member 230 and closes the first air passage 110.

Wherein, the first control member 220 is located inside the first valve plug 210 in the first air passage 110, which means that the first control member 220 is closer to the center of the first air passage 110 relative to the first valve plug 210 in the axial direction of the first air passage 110, the first valve plug 210 is closer to the end of the first air passage 110 relative to the first control member 220, and the first valve plug 210 can stop the first control member 220 to prevent the first control member 220 from being separated from the first air passage 110. The first control member 220 may be spaced apart from the first valve plug 210, and the first control member 220 may move in a direction approaching the first valve plug 210 by pressing the first elastic member 230, so as to open the first air passage 110.

In this way, when the gas flows in the direction approaching the first valve plug 210, the gas pushes the first control member 220 to press the first elastic member 230, so that the first gas channel 110 is opened, the first gas channel 110 is communicated with the first through hole 211, so as to ensure the normal flow of the gas in the first gas channel 110, and when the gas stops flowing in the direction approaching the first valve plug 210, the first elastic member 230 can push the first control member 220 to stop against the inner wall of the first gas channel 110 and close the first gas channel 110, so as to block the gas flow of the space at two sides of the moving direction of the valve core 100, and keep the position of the valve core 100 stable.

Further, as shown in fig. 1, the first control member 220 is configured in a spherical shape, a side of the first valve plug 210 facing the first control member 220 is configured with a first plane 212, the first plane 212 is disposed around the first through hole 211, the first elastic member 230 is a conical coil spring having a large coil end and a small coil end, the large coil end of the first elastic member 230 abuts against the first plane 212, and the small coil end of the first elastic member 230 abuts against the first control member 220.

Through setting the first control 220 to spherically, the removal of first control 220 is lighter, and the inner wall of first control 220 and first air flue 110 is more easily laminated inseparable, avoid appearing the clearance between the inner wall of first control 220 and first air flue 110, the sealed effect is better, in addition, through setting up first elastic component 230 to the conical coil spring that has big circle end and little circle end, can avoid the outside diameter of one side of first elastic component 230 towards first valve plug 210 to be too little, like this, the big circle end of first elastic component 230 can stop completely in first plane 212, avoid one portion of one end of first elastic component 230 towards first valve plug 210 to stop on first plane 212 and another portion can not obtain the support with first through-hole 211, and then avoid first elastic component 230 to take place axial displacement when being extruded, the structure setting of first check valve 200 is more reasonable, first elastic component 230 can stably support first control 220, the removal of first control 220 is more gentle and stable.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the inner circumferential surface of the first air passage 110 is configured with a first step 111, the first step 111 is located at a side of the first control member 220 remote from the first valve plug 210, and the first control member 220 is stopped against the first step 111 under the elastic force of the first elastic member 230.

Specifically, the inner diameter of the first step 111 may be smaller than the inner diameter of the portion of the first air passage 110 for accommodating the first valve plug 210, the first elastic member 230 and the first control member 220, that is, the first step 111 protrudes inward from the inner wall of the first air passage 110 in the radial direction of the first air passage 110, so that the first control member 220 may move in a space between an end of the first step 111 facing the first valve plug 210 and the first valve plug 210, the first step 111 may not only stop the first control member 220 to stop and limit the first control member 220, but also an end of the first step 111 facing the first valve plug 210 may be attached to a side of the first control member 220 facing the first step 111 to block the first air passage 110, thereby achieving closure of the first air passage 110.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the first step 111 is configured with a first slope 112 inclined with respect to a central axis of the first air passage 110, the first slope 112 being disposed around the first control member 220, and the first control member 220 being stopped against the first slope 112.

Specifically, the first control member 220 is spherical, and gradually approaches the first control member 220 along the central axis of the first air passage 110, and the first inclined surface 112 may extend in a direction away from the central axis of the first air passage 110, so that the contact area between the first control member 220 and the first inclined surface 112 is larger, and the sealing performance between the first control member 220 and the first inclined surface 112 is better, so that the first control member 220 and the first inclined surface 112 can be matched to realize the sealing of the first air passage 110.

Moreover, by providing the first inclined surface 112, when the air flow pushes the first control member 220 to move in a direction approaching the first valve plug 210, the first control member 220 is separated from the first inclined surface 112, and the first inclined surface 112 can guide the air flow flowing between the first control member 220 and the first inclined surface 112, so that the air flow in the first air channel 110 is smoother, and the movement of the valve core 100 is smoother.

In some embodiments of the present utility model, as shown in fig. 1, 3 and 4, the control valve 1 further comprises a pilot valve 300 and a second check valve 400.

The pilot valve 300 is mounted on the valve core 100, the space at two sides of the moving direction of the valve core 100 is also communicated through a second air passage 310, one part of the second air passage 310 is configured on the valve core 100, the other part of the second air passage 310 is configured on the pilot valve 300, the second one-way valve 400 is arranged in the part of the second air passage 310 configured on the pilot valve 300, and the gas in the second air passage 310 is conducted unidirectionally along the second air passage 310.

In this way, the pilot valve 300 can move together with the valve core 100, and by setting the first air passage 110 and the second air passage 310, the air pressure in the space at both sides of the moving direction of the valve core 100 can be balanced, so that the movement of the valve core 100 is more stable, and the movement of the pilot valve 300 is more stable accordingly, and because a part of the first air passage 110 and the second air passage 310 is configured in the valve core 100, the space utilization rate of the valve core 100 is higher, the integration level is higher, and the volume of the control valve 1 is reduced.

In addition, another part of the second air passage 310 is configured in the pilot valve 300, and the second check valve 400 can be arranged in the pilot valve 300, so that the structure of the part of the second air passage 310 in the valve core 100 can be simplified, the processing of the second air passage 310 is facilitated, and the second check valve 400 is not arranged in the valve core 100, so that the volume of the valve core 100 is further reduced, and the structure of the valve core 100 is simpler.

In addition, by providing the first check valve 200 and the second check valve 400, the flow rate and the flow direction of the gas in the first air passage 110 and the second air passage 310 can be controlled, so that the air pressure balance at both sides of the moving direction of the valve core 100 is controlled, and the stability of the moving direction of the valve core 100 is ensured.

In some embodiments of the present utility model, as shown in fig. 1, the spool 100 has a first space 500 and a second space 600 at both sides in the moving direction thereof, and the first check valve 200 allows only gas to flow from the first space 500 to the second space 600 along the first gas passage 110, and the second check valve 400 allows only gas to flow from the second space 600 to the first space 500 along the second gas passage 310.

That is, when the valve body 100 moves along the first air passage 110 in a direction approaching the first space 500, the gas may flow only from the first space 500 to the second space 600 through the first check valve 200, and when the valve body 100 moves along the first air passage 110 in a direction approaching the second space 600, the gas may flow only from the second space 600 to the first space 500 through the first check valve 200, and thus, the gas flow from the first space 500 to the second space 600 and the gas flow from the second space 600 to the first space 500 may not interfere with each other, which is advantageous for improving the flow stability of the gas flow, and thus, the movement of the first control member 220 may be smoother, and the operation of the control valve 1 may be more stable and reliable.

In some embodiments of the present utility model, as shown in fig. 1 and 3, the second check valve 400 includes a second valve plug 410, a second elastic member 420, and a second control member 430.

The second valve plug 410 has a second through hole 411 communicating with the second air channel 310, the second elastic member 420 is located at a side of the second air channel 310, which is opposite to the valve core 100, of the second valve plug 410, and is abutted against an inner wall of the second air channel 30, the second control member 430 is disposed between the second valve plug 410 and the second elastic member 420, and the second control member 430 is abutted against the second valve plug 410 and blocks the second through hole 411 under the elastic force of the second elastic member 420.

In this way, when the gas flows in the direction approaching to the second elastic member 420, the gas pushes the second control member 430 to press the second elastic member 420, so that the second air passage 310 is opened, and the normal flow of the gas in the second air passage 310 is ensured, and when the gas stops flowing in the direction approaching to the second valve plug 410, the second elastic member 420 can push the second control member 430 to stop against the second valve plug 410 and block the second through hole 411 again, so as to block the airflow flowing in the space at two sides of the moving direction of the valve plug 100, and keep the position of the valve plug 100 stable.

Further, as shown in fig. 1, 3 and 4, the inner circumferential surface of the second air passage 310 is configured with a second step 311, the second step 311 is located at a side of the second elastic member 420 away from the second valve plug 410, and the second elastic member 420 abuts against the second step 311.

Specifically, the inner diameter of the second step 311 may be smaller than the inner diameter of the portion of the second air passage 310 for accommodating the second valve plug 410, the second elastic member 420 and the second control member 430, that is, the second step 311 protrudes inward from the inner wall of the second air passage 310 in the radial direction of the second air passage 310, so that the second control member 430 may move in a space between an end of the second step 311 facing the second valve plug 410 and the second valve plug 410, the second step 311 may not only stop the second control member 430 to stop the second control member 430, but also an end of the second step 311 facing the second valve plug 410 may be fitted with a side of the second control member 430 facing the second step 311 to block the second air passage 310, thereby achieving closure of the second air passage 310.

In some embodiments of the present utility model, as shown in fig. 1, the second control member 430 is configured in a sphere shape, a side of the second step 311 facing the second elastic member 420 is configured with a second plane 312, the second plane 312 is disposed around the second air passage 310, the second elastic member 420 is a conical coil spring having a large coil end and a small coil end, the large coil end of the second elastic member 420 is abutted against the second plane 312, and the small coil end of the second elastic member 420 is abutted against the second control member 430.

Through setting the second control piece 430 to spherically, the removal of second control piece 430 is lighter, and the terminal surface of second control piece 430 and second valve plug 410 is more easily laminated inseparably, avoid appearing the clearance between second control piece 430 and the second valve plug 410, the sealed effect is better, in addition, through setting up second elastic component 420 as the conical coil spring that has big round end and little round end, can avoid the outside diameter of one side of second elastic component 420 towards second step 311 to be too little, in this way, the big round end of second elastic component 420 can stop completely in the terminal surface of one end towards second elastic component 420 of second step 311, avoid the one portion of one end towards second valve plug 410 of second elastic component 420 to stop on the terminal surface of second step 311 and another portion can correspond with second air flue 310 and can not get the support, and then avoid second elastic component 420 to take place axial displacement when being extruded, the structure setting of second check valve 400 is more reasonable, second elastic component 420 can stably support second control piece 430, the removal of second control piece 430 is more gentle.

In some embodiments of the present utility model, as shown in fig. 1 and 5, the second valve plug 410 is configured with a second slope 412 inclined with respect to the central axis of the second air passage 310, the second slope 412 being disposed around the second control member 430, the second control member 430 abutting against the second slope 412.

Specifically, the second control member 430 is spherical, and gradually approaches the second control member 430 along the central axis of the second air passage 310, and the second inclined surface 412 may extend in a direction away from the central axis of the second air passage 310, so that the contact area between the second control member 430 and the second inclined surface 412 is larger, and the tightness between the second control member 430 and the second inclined surface 412 is better, so that the second air passage 310 can be closed by using the cooperation of the second control member 430 and the second inclined surface 412.

Moreover, by providing the second inclined surface 412, when the air flow pushes the second control member 430 to move in a direction approaching the second elastic member 420, the second control member 430 is separated from the second inclined surface 412, and the second inclined surface 412 can guide the air flow flowing between the second control member 430 and the second inclined surface 412, so that the air flow in the second air passage 310 is smoother, and the movement of the valve core 100 is smoother.

A shock absorber according to an embodiment of the present utility model including the control valve 1 according to the above-described embodiment of the present utility model will be described below with reference to the accompanying drawings.

According to the shock absorber of the embodiment of the present utility model, by using the control valve 1 according to the above-described embodiment of the present utility model, the air pressure balance of the space on both sides in the moving direction can be maintained, and there are advantages of high integration level, stable movement, and the like.

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

According to the vehicle of the embodiment of the utility model, by utilizing the shock absorber according to the embodiment of the utility model, the air pressure balance of the space at two sides of the moving direction can be maintained, and the vehicle has the advantages of high integration level, stable movement and the like.

Other constructions and operations of the control valve 1, the shock absorber, and the vehicle according to the embodiment of the present utility model are known to those skilled 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

1. A control valve, comprising:

the movable valve core is provided with a first air passage, and the first air passage is communicated with the space at two sides of the moving direction of the valve core;

the first one-way valve is arranged in the first air passage and enables the gas in the first air passage to be conducted unidirectionally along the first air passage.

2. The control valve of claim 1, wherein the first one-way valve comprises:

a first valve plug having a first through hole in communication with the first gas passage;

a first control member located inside the first valve plug within the first airway;

the first elastic piece is arranged between the first valve plug and the first control piece, and the first control piece is stopped against the inner wall of the first air passage and closes the first air passage under the elasticity of the first elastic piece.

3. The control valve of claim 2, wherein the first control member is configured as a sphere;

a first plane is formed on one side of the first valve plug facing the first control piece, and the first plane is arranged around the first through hole;

the first elastic piece is a conical spiral spring with a large ring end and a small ring end, the large ring end of the first elastic piece is abutted against the first plane, and the small ring end of the first elastic piece is abutted against the first control piece.

4. The control valve according to claim 3, wherein an inner circumferential surface of the first air passage is configured with a first step, the first step being located at a side of the first control member remote from the first valve plug, the first control member being stopped against the first step by an elastic force of the first elastic member.

5. The control valve of claim 4, wherein the first step is configured with a first ramp surface inclined relative to a central axis of the first air passage, the first ramp surface disposed about the first control member, the first control member abutting the first ramp surface.

6. The control valve of claim 1, further comprising:

the pilot valve is arranged on the valve core, the spaces at two sides of the valve core in the moving direction are also communicated through a second air passage, one part of the second air passage is constructed on the valve core, and the other part of the second air passage is constructed on the pilot valve;

the second one-way valve is arranged in the part of the second air passage, which is constructed in the pilot valve, and enables the gas in the second air passage to be conducted unidirectionally along the second air passage.

7. The control valve according to claim 6, wherein both sides of the spool moving direction have a first space and a second space, respectively;

the first one-way valve only allows gas to flow from the first space to the second space along the first gas path;

the second one-way valve allows gas to flow only from the second space to the first space along the second gas path.

8. The control valve of claim 6, wherein the second one-way valve comprises:

a second valve plug having a second through bore in communication with the second airway;

the second elastic piece is positioned at one side of the second valve plug, which is opposite to the valve core, in the second air passage and is abutted against the inner wall of the second air passage;

the second control piece is arranged between the second valve plug and the second elastic piece, and the second control piece is abutted to the second valve plug and seals the second through hole under the elasticity of the second elastic piece.

9. The control valve of claim 8, wherein an inner peripheral surface of the second air passage is configured with a second step, the second step being located on a side of the second elastic member remote from the second valve plug, the second elastic member abutting against the second step.

10. The control valve of claim 9, wherein the second control member is configured as a sphere;

a second plane is formed on one side of the second step, which faces the second elastic piece, and the second plane is arranged around the second air passage;

the second elastic piece is a conical spiral spring with a large ring end and a small ring end, the large ring end of the second elastic piece is abutted against the second plane, and the small ring end of the second elastic piece is abutted against the second control piece.

11. The control valve of claim 10, wherein the second valve plug is configured with a second ramp surface inclined relative to a central axis of the second air passage, the second ramp surface disposed about the second control member, the second control member abutting the second ramp surface.

12. A shock absorber comprising a control valve according to any of claims 1-11.

13. A vehicle comprising a shock absorber according to claim 12.