CN220646598U - Composite valve and damper - Google Patents

Abstract

The utility model discloses a composite valve and a shock absorber, wherein the composite valve comprises: the valve comprises a valve body, a valve core and a resetting piece, wherein the valve body is provided with a first cavity and a second cavity, the valve core is provided with a first flow passage, the first flow passage enables the first cavity to be communicated with the second cavity, the valve core is movably arranged in the first cavity so as to move between an opening position and a closing position, the flow area of the first flow passage is increased or reduced, and the resetting piece is suitable for providing elastic force to reset the valve core to the closing position; the valve body is provided with a second flow passage communicated with the first cavity, the valve core is provided with a third flow passage communicated with the second cavity, the second flow passage is communicated with the first driving cavity so as to drive the valve core to move towards the opening position when the pressure of the first cavity is higher than that of the second cavity, and the third flow passage is communicated with the second driving cavity so as to drive the valve core to move towards the opening position when the pressure of the second cavity is higher than that of the first cavity, so that the cost is reduced, the logic is simplified, and the working stability is improved.

Description

Composite valve and damper

Technical Field

The utility model relates to the technical field of vibration absorbers, in particular to a composite valve and a vibration absorber.

Background

In the related art, a suspension has an important influence on the comfort and safety of the running of a vehicle, and a shock absorber is used as a key component in the suspension, and has been updated for many times since the occurrence. The conventional low-medium-end vehicle is a passive shock absorber, and the damping is fixed value after leaving the factory from the parts, and cannot be adjusted, but has low price; the electromagnetic shock absorber with adjustable damping is used for the high-end vehicle, the price is high, the electromagnetic shock absorber is internally provided with a composite valve, the structural principle is complex, the precision requirement of parts is high, the realization of platformization is not facilitated, meanwhile, the back pressure side pressure regulation is realized by depending on a main valve and a pilot valve, the design difficulty is high, the cost is high, the control difficulty is high, and the stability is low.

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 composite valve, which has a simple structure, low cost, low control difficulty and high stability, and is beneficial to platformization.

The utility model further provides a shock absorber adopting the composite valve.

An embodiment of a composite valve according to the first aspect of the present utility model includes: a valve body having a first chamber and a second chamber, a valve spool having a first flow passage that communicates the first chamber with the second chamber, the valve spool being movably disposed in the first chamber to move between an open position and a closed position and to increase or decrease a flow area of the first flow passage, and a reset member adapted to provide an elastic force to reset the valve spool to the closed position; the valve body is provided with a first driving cavity and a second driving cavity, the valve body is provided with a second flow passage communicated with the first cavity, the valve body is provided with a second cavity communicated with a third flow passage, the second flow passage is communicated with the first driving cavity, the valve body is driven to move towards the opening position when the pressure of the first cavity is higher than that of the second cavity, and the third flow passage is communicated with the second driving cavity, so that the valve body is driven to move towards the opening position when the pressure of the second cavity is higher than that of the first cavity.

According to the composite valve provided by the embodiment of the utility model, the valve core driving under the compression working condition (the pressure of the second cavity is greater than that of the first cavity) and the recovery working condition (the pressure of the first cavity is greater than that of the second cavity) is respectively realized through the two opening pressure surfaces, the compression pressure and the recovery pressure can be respectively regulated, for example, the size of the two opening pressure surfaces is regulated, the flow areas of the second flow channel and the third flow channel are regulated, and the like, so that the valve core opening pressure can be respectively controlled during compression and recovery, the regulation difficulty is low, the reliability is higher, the structure is simple, the platform design is facilitated, and the cost is low.

According to some embodiments of the utility model, the valve body includes a body, a valve cover disposed on the body, and a valve sleeve defining the first chamber with the valve cover and the second chamber with the body.

Further, a first duct is provided on the valve housing, a radial end of the first flow passage is communicated with the first duct, and an axial end of the first flow passage is communicated with the first cavity.

Further, the valve element is further provided with at least one notch, the notch is arranged adjacent to the first flow passage, and the notch is communicated with the first cavity when the valve element is in the closed position.

In some embodiments, the body is provided with a through hole, the through hole is communicated with the axial end of the second flow channel, and the radial end of the second flow channel is communicated with the first driving cavity.

According to some embodiments of the utility model, a radial end of the third flow passage communicates with the first bore, and an axial end of the third flow passage communicates with the second drive chamber.

Further, a flange is provided at an end of the valve spool remote from the reset member, the flange pushing against an end face of the valve sleeve, and the flange and the valve sleeve define first and second radially spaced drive chambers when the valve spool is in the closed position.

Further, a raised portion is provided on a surface of the flange and/or an end face of the valve sleeve to reduce a contact area of the flange with the end face of the valve sleeve.

According to some embodiments of the utility model, the composite valve further comprises: the electromagnetic valve is connected with the valve body, and the power output end of the electromagnetic valve is connected with the valve sleeve through an adjusting gasket.

A damper according to an embodiment of the second aspect of the present utility model includes: the device comprises a shell and a composite valve, wherein the shell is provided with a compression cavity and a restoration cavity which can be selectively communicated, a first cavity of the composite valve is communicated with the restoration cavity, and a second cavity of the composite valve is communicated with the compression cavity.

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 top view of a shock absorber according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is an isometric view of a composite valve according to an embodiment of the utility model.

Reference numerals:

the shock absorber 1000 is intended to be a self-contained,

the combination valve 100, compression chamber 200, recovery chamber 300,

the valve body 10, the body 11, the through hole 111, the valve cover 12, the valve housing 13, the first duct 131, the second flow passage 132,

the valve core 20, the first flow passage 21, the third flow passage 22, the notch 23, the flange 24, the boss 241,

the reset element 30, solenoid valve 40, adjustment shim 50, passive valve 60,

a first chamber 101, a second chamber 102, a first drive chamber 201, and a second drive chamber 202.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

First, the operation principle of the composite valve 100 of the embodiment of the present utility model will be specifically described.

As shown in fig. 1, the composite valve 100 of the embodiment of the present utility model mainly includes a solenoid portion (solenoid valve 40) and a hydraulic portion (mechanical valve composed of a valve body 10, a spool 20, etc.).

The composite valve 100 of the embodiment of the utility model can be integrally assembled in the shell of the shock absorber, the sealing area on the passive valve 608 is in contact fit with the inner diameter of the shell to divide the inner cavity of the cylinder into an upper recovery cavity 300 and a lower compression cavity 200, and the electromagnetic valve 40 moves up and down along with the piston rod in the shell at the moment due to the up and down jolting of the wheel, so that high pressure is alternately generated in the recovery cavity 300 or the compression cavity 200, and a medium at the high pressure side flows to the low pressure side; the opening degree of the valve core 20 can be controlled by adjusting the electromagnetic force of the electromagnetic valve 40, so that the speed of medium interactive flow of the compression cavity 200 and the recovery cavity 300 is controlled, and the damping force is controlled.

The opening force of the valve core 20 mainly comes from the hydraulic pressure of the second chamber 102, and the closing force thereof is the sum of the elastic force of the restoring member 30, the electromagnetic force transmitted after the electromagnetic valve 40 contacts the valve core 20, and the hydraulic pressure of the first chamber 101.

A composite valve 100 and a shock absorber according to an embodiment of the present utility model are described below with reference to fig. 1 to 4.

As shown in fig. 1, 2 and 3, a composite valve 100 according to an embodiment of the first aspect of the present utility model includes: valve body 10, valve element 20, and reset member 30.

Wherein the valve body 10 has a first chamber 101 and a second chamber 102, the valve core 20 has a first flow passage 21, the first flow passage 21 communicates the first chamber 101 with the second chamber 102, the valve core 20 is movably disposed in the first chamber 101 to move between an open position and a closed position and increase or decrease a flow area of the first flow passage 21, and the reset member 30 is adapted to provide an elastic force to reset the valve core 20 to the closed position.

It should be noted that the composite valve 100 according to the embodiment of the present utility model may be disposed on a shock absorber, the first chamber 101 is in communication with the recovery chamber 300, the second chamber 102 is in communication with the compression chamber 200, and the composite valve 100 according to the embodiment of the present utility model may also be disposed on other pneumatic or hydraulic lines, and the lines, chambers or devices (e.g., other valves or devices) at the inlet and outlet ends of the composite valve 100 are in communication with each other through the composite valve 100 to achieve medium communication between the high pressure side chamber and the low pressure side chamber.

Wherein, the end of the valve core 20 away from the reset piece 30 is provided with a first driving cavity 201 and a second driving cavity 202, the valve body 10 is provided with a second flow passage 132 communicated with the first cavity 101, the valve core 20 is provided with a second cavity 102 communicated with a third flow passage 22, the second flow passage 132 is communicated with the first driving cavity 201 so as to drive the valve core 20 to move towards the opening position when the pressure of the first cavity 101 is higher than that of the second cavity 102, and the third flow passage 22 is communicated with the second driving cavity 202 so as to drive the valve core 20 to move towards the opening position when the pressure of the second cavity 102 is higher than that of the first cavity 101.

Specifically, the first flow channel 21 communicates the first cavity 101 with the second cavity 102, the damping force can be adjusted by adjusting the flow area of the first flow channel 21, the second flow channel 132 communicates with the first driving cavity 201 and the first cavity 101 at the same time, and the third flow channel 22 communicates with the second driving cavity 202 and the second cavity 102 at the same time, so that when the pressure of the first cavity 101 is higher than that of the second cavity 102, the medium with high pressure in the first cavity 101 pushes the opening pressure surface of the first driving cavity 201 to realize the movement of the valve core 20 between the opening position and the closing position, and when the pressure of the second strong pressure is higher than that of the first cavity 101, the medium with high pressure in the second cavity 102 pushes the opening pressure surface of the second driving cavity 202 to realize the movement of the valve core 20 between the opening position and the closing position.

According to the composite valve 100 of the embodiment of the present utility model, the valve core 20 is driven under the compression working condition (the pressure of the second cavity 102 is greater than that of the first cavity 101) and the recovery working condition (the pressure of the first cavity 101 is greater than that of the second cavity 102) respectively through the two opening pressure surfaces, and the compression pressure and the recovery pressure can be adjusted respectively, for example, the size of the two opening pressure surfaces is adjusted, and the flow areas of the second flow channel 132 and the third flow channel 22 are adjusted, so that the opening pressure of the valve core 20 can be controlled respectively during the compression and the recovery.

According to some embodiments of the present utility model, the valve body 10 includes a body 11, a valve cover 12 disposed on the body 11, and a valve housing 13, the valve housing 13 and the valve cover 12 defining a first chamber 101, the valve housing 13 and the body 11 defining a second chamber 102.

Specifically, the body 11 is configured as a cylindrical shell, the valve housing 13 is disposed inside the cylindrical shell, the valve cover 12 is disposed at one end of the cylindrical shell, the valve housing 13 is hollow, so as to define a first cavity 101 through the valve cover 12 and the valve housing 13, at least part of the valve housing 13 is spaced apart from the inner wall of the body 11, so as to define a second cavity 102, the first cavity 101 and the second cavity 102 are at least communicated through the first flow channel 21, the valve core 20 is movably disposed in the valve housing 13, the valve core 20 moves relative to the valve housing 13, so as to adjust the medium flow of the first flow channel 21, and thus, the damping force adjustment of the damping structure (such as a shock absorber) adopting the composite valve 100 of the utility model can be realized, and the working stability and reliability can be improved.

As shown in fig. 2 and 3, further, the valve housing 13 is provided with a first orifice 131, a radial end of the first flow passage 21 communicates with the first orifice 131, and an axial end of the first flow passage 21 communicates with the first chamber 101.

Specifically, the first flow passage 21 includes a radial end connected to the first duct 131 and an axial end connected to the first chamber 101, and the first duct 131 communicates with the second chamber 102 to communicate the first chamber 101 with the second chamber 102.

Wherein, the pressure regulation of the first cavity 101 is divided into two working conditions of compression and restoration: when in compression, the compression cavity 200 is high-pressure, and medium reaches the first pore canal 131 (a plurality of) of the valve sleeve 13 and then reaches the first cavity 101 through the first flow passage 21 of the valve core 20, and the medium in the compression cavity 200 can be discharged to the recovery cavity 300 through the second cavity 102 and the first cavity 101 by the through hole 111 in the valve cover 12, so that the purpose of adjusting the pressure of the first cavity 101 is achieved; during restoration, the restoration chamber 300 is at high pressure, and is sublimated through the pore canal of the shell and the through hole 111 in the valve cover 12 to reach the first chamber 101 of the valve core 20, then is discharged to the second chamber 102 through the first flow passage 21 of the valve core 20, a plurality of uniformly distributed first pore canals 131 of the valve sleeve 13 and is discharged to the compression chamber 200 through the second chamber 102, so that the purpose of adjusting the pressure of the first chamber 101 is achieved.

As shown in fig. 2, the valve core 20 is further provided with at least one notch 23, the notch 23 being disposed adjacent to the first flow passage 21, the notch 23 being in communication with the first chamber 101 when the valve core 20 is in the closed position.

Specifically, when the valve core 20 is in the closed position shown in fig. 2, the valve core 20 may ensure that the compression chamber 200 and the recovery chamber 300 may have a small flow passage communication through the opened at least one notch 23, so as to improve the working stability and the use safety of the composite valve 100.

It should be noted that the notch 23 may be a triangular opening as shown, or may be of another shape, and the present utility model is not limited thereto.

Referring to fig. 2 and 3, in some embodiments, the body 11 is provided with a through hole 111, the through hole 111 communicates with an axial end of the second flow channel 132, and a radial end of the second flow channel 132 communicates with the first driving chamber 201; the radial end of the third flow passage 22 communicates with the first port 131, and the axial end of the third flow passage 22 communicates with the second drive chamber 202.

Specifically, the opening force of the valve core 20 mainly comes from the medium pressure below the valve core 20, and the opening force is divided into two working conditions of compression and restoration: when in compression, the first cavity 101 is high pressure, and a medium can reach the second driving cavity 202 of the valve core 20 through the third flow passage 22 of the valve core 20, and a first pressure surface formed by the valve core 20 and the lowest cavity of the valve sleeve 13 forms an opening hydraulic pressure acting surface of the valve core 20 under a compression working condition; during restoration, the first cavity 101 is at high pressure, and medium continuously passes through the through holes 111 of the body 11 and the second flow channel 132 of the valve sleeve 13, reaches the first driving cavity 201 of the valve core 20, and forms a second pressure surface composed of the valve core 20 and the valve sleeve 13, thereby forming an opening hydraulic pressure acting surface of the valve core 20 under a restoration working condition.

Therefore, the high-pressure side first cavity 101 or the high-pressure side second cavity 102 is driven to move by the respective high-medium pressure through the second flow channel 132 and the third flow channel 22, so that the convenience in adjusting the composite valve 100 is improved, the structure of the composite valve 100 is effectively simplified, the cost of the composite valve 100 is reduced, and the platform arrangement of the composite valve 100 is facilitated.

It should be noted that, due to the limitation of the processing technology, plugs may be disposed on the second flow channel 132 of the valve sleeve 13, the first flow channel 21 on the valve core 20, and the second flow channel 132 to seal the process hole, and welding, press-fitting or screw fastening may be performed between the plugs and the process hole.

As shown in fig. 2 and 3, the end of the valve spool 20 remote from the reset member 30 is provided with a flange 24, the flange 24 bearing against the end face of the valve sleeve 13, and the flange 24 and the valve sleeve 13 define first and second radially spaced drive chambers 201, 202 when the valve spool 20 is in the closed position.

Specifically, the lower surface of the valve housing 13 may be provided with a stepped surface or formed as a flat surface, and the flange 24 may extend into the stepped surface or flat surface to define at least a first driving chamber 201 and a second driving chamber 202 spaced apart by the flange 24, and the first driving chamber 201 and the second driving chamber 202 are formed on the valve core 20, which is convenient for processing and design, and for maintenance in later period.

Further, a boss 241 is provided on the surface of the flange 24 and/or the end surface of the valve housing 13 to reduce the contact area of the flange 24 with the end surface of the valve housing 13.

Therefore, when in the closed position, the valve core 20 and the valve sleeve 13 are in line contact fit, the contact area is smaller, and the abrupt change of the area of the bottom opening pressure surface in the process of switching the valve core 20 between the open position and the closed position can be avoided, so that the flow adjustment of the first flow passage 21 is more linear, the controllability is higher, and the working stability of the composite valve 100 is higher.

According to some embodiments of the utility model, the composite valve 100 further comprises: the electromagnetic valve 40, the electromagnetic valve 40 is connected with the valve body 10, the power output end of the electromagnetic valve 40 is connected with the valve sleeve 13 through the adjusting gasket 50.

Specifically, the setting of the adjusting gasket 50 can eliminate the gap between the power output end and the valve sleeve 13, and the adjusting gasket 50 has a certain elasticity, and can provide a certain buffering force between the power output end and the valve core 20, so as to prevent the valve core 20 from directly impacting the power output end, avoid deformation of the power output end and/or the valve core 20, and prolong the service life of the composite valve 100.

Wherein, the up end of valve gap 12 and the shell of solenoid valve 40 can laminate and set up, if: the step surface is arranged on the shell of the electromagnetic valve 40, the upper end surface of the valve cover 12 is attached to the step surface, the lower end surface of the valve cover 12 is in contact fit with the upper end surface of the valve sleeve 13, the axial limit of the electromagnetic valve 40 and the mechanical valve part is realized, and the body 11 can be fixed on the shell through threaded connection.

Meanwhile, referring to fig. 4, in order to ensure connectivity between the through hole 111 and the second flow channel 132, the housing and the valve cover 12 and the valve sleeve 13 may be limited by a positioning pin, and the positioning pin may be press-fitted or screw-fitted in a pin hole of the valve sleeve 13 and be clearance-fitted with the pin hole of the valve cover 12, and the positioning pin and the valve sleeve 13 may also be integrally formed.

It should be noted that, in the composite valve 100 according to the embodiment of the present utility model, the battery valve is independent from the mechanical valve, and other parts except the power output end can be independently designed to have an internal structure, which is also convenient for the platform design of the composite valve 100.

As shown in fig. 1, a shock absorber according to an embodiment of a second aspect of the present utility model includes: the casing and the composite valve 100, the casing has the compression chamber 200 and the restoring chamber 300 that can be selectively communicated, the first chamber 101 of the composite valve 100 is communicated with the restoring chamber 300, the second chamber 102 of the composite valve 100 is communicated with the compression chamber 200, and the technical effects are consistent with those of the composite valve 100, and are not described herein.

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 utility model, a "first feature" or "second feature" may include one or more of such features.

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

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

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. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more 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 (10)

1. A composite valve, comprising:

a valve body (10), the valve body (10) having a first chamber (101) and a second chamber (102);

a spool (20), the spool (20) having a first flow passage (21), the first flow passage (21) communicating the first chamber (101) with the second chamber (102), the spool (20) being movably disposed in the first chamber (101) to move between an open position and a closed position and to increase or decrease a flow area of the first flow passage (21);

-a return member (30), the return member (30) being adapted to provide an elastic force to return the valve core (20) to the closed position; wherein the method comprises the steps of

One end of the valve core (20) far away from the reset piece (30) is provided with a first driving cavity (201) and a second driving cavity (202), the valve body (10) is provided with a second flow passage (132) communicated with the first cavity (101), the valve core (20) is provided with a second cavity (102) communicated with a third flow passage (22), the second flow passage (132) is communicated with the first driving cavity (201) so as to drive the valve core (20) to move towards the opening position when the pressure of the first cavity (101) is higher than that of the second cavity (102), and the third flow passage (22) is communicated with the second driving cavity (202) so as to drive the valve core (20) to move towards the opening position when the pressure of the second cavity (102) is higher than that of the first cavity (101).

2. The composite valve of claim 1, wherein the valve body (10) comprises a body (11), a valve cover (12) disposed on the body (11), and a valve sleeve (13), the valve sleeve (13) and the valve cover (12) defining the first chamber (101), the valve sleeve (13) and the body (11) defining the second chamber (102).

3. A composite valve according to claim 2, wherein the valve sleeve (13) is provided with a first port (131), a radial end of the first flow channel (21) being in communication with the first port (131), an axial end of the first flow channel (21) being in communication with the first chamber (101).

4. A composite valve according to claim 3, wherein the valve element (20) is further provided with at least one notch (23), the notch (23) being arranged adjacent to the first flow passage (21), the notch (23) being in communication with the first chamber (101) when the valve element (20) is in the closed position.

5. The composite valve according to claim 2, wherein the body (11) is provided with a through hole (111), the through hole (111) is communicated with the axial end of the second flow passage (132), and the radial end of the second flow passage (132) is communicated with the first driving cavity (201).

6. A composite valve according to claim 3, wherein a radial end of the third flow passage (22) communicates with the first bore (131), and an axial end of the third flow passage (22) communicates with the second drive chamber (202).

7. A composite valve according to claim 2, characterized in that the end of the valve core (20) remote from the return element (30) is provided with a flange (24), the flange (24) pushing against the end face of the valve sleeve (13), and that the flange (24) and the valve sleeve (13) define a first drive chamber (201) and a second drive chamber (202) spaced apart in radial direction when the valve core (20) is in the closed position.

8. A composite valve according to claim 7, characterized in that a boss (241) is provided on the surface of the flange (24) and/or on the end face of the valve sleeve (13) to reduce the contact area of the flange (24) with the end face of the valve sleeve (13).

9. The combination valve of claim 2, further comprising: the electromagnetic valve (40), the electromagnetic valve (40) with valve body (10) links to each other, the power take off end of electromagnetic valve (40) with valve pocket (13) is through adjusting gasket (50) and link to each other.

10. A shock absorber, comprising:

a housing having a compression chamber (200) and a recovery chamber (300) in selective communication;

the compound valve of any of claims 1-9, a first chamber (101) of the compound valve being in communication with the recovery chamber (300) and a second chamber (102) of the compound valve being in communication with the compression chamber (200).