NL2034616A

NL2034616A - Damping adjusting valve with limiting device

Info

Publication number: NL2034616A
Application number: NL2034616A
Authority: NL
Inventors: Wang Ce; Dong Kejian; Zhang Yangrui; Deng Zhaoxue
Original assignee: Univ Chongqing Jiaotong
Priority date: 2022-09-20
Filing date: 2023-04-18
Publication date: 2023-05-19
Also published as: CN115539554B; NL2034616B1; CN115539554A

Abstract

The present disclosure discloses a damping adjusting valve with a limiting device, and relates to the technical field of shock absorbers of automobiles. The damping adjusting valve includes an encapsulated solenoid valve assembly, an encapsulating assembly, an adjusting valve base, and a valve bottom assembly, wherein the encapsulated solenoid valve assembly includes a solenoid coil, a solenoid, and za valve element disk; the solenoid, coil and the solenoid are used for producing an electromagnetic effect and are arranged, on the valve element disk; the encapsulating assembly includes a solenoid, valve outer cylinder for encapsulating the solenoid valve assembly, and a solenoid valve encapsulating end cap; the valve element disk is rotationally arranged on the adjusting valve base and is communicated with the adjusting valve base; the valve bottom assembly includes a valve bottom main body; the adjusting valve base is arranged on the valve bottom main body and is communicated with the valve bottom. main body; and a communication area between the valve element disk that rotates and the adjusting valve base is adjustable.

Description

DAMPING ADJUSTING VALVE WITH LIMITING DEVICE

TECHNICAL FIELD

The present disclosure relates to a shock absorber for an au- tomobile, in particular to a damping adjusting valve with a limit- ing device.

BACKGROUND ART

With the improvement of people's living standards and the rapid development of the automobile industry, there is a growing demand for increases in the ride comfort and the security of auto- mobiles, and shock absorbers are core components that suspensions may effectively alleviate the shock of roads to automobiles, therefore the performance of the shock absorbers must satisfy the demands for the ride comfort and security simultaneously.

Not only does shock arising from uneven roads and the running process of the automobiles have the influence on the ride comfort of drivers, but also it poses a severe impact on the service life and security of the automobiles, and thus, it is necessary to con- trol and attenuate such shock to the maximum extent.

A Chinese patent with the publication number of CN113124087A has disclosed a two-section damping continuous adjusting valve for a shock absorber, which is used for adjusting damping. The contin- uous adjustment in damping force is implemented by adjusting flow passage areas of a first section of damping and a second section of damping, and the damping adjusting range of the shock absorber or a damping valve is expanded. Based on this design theory, alt- hough continuous adjustment in the damping may be implemented, as the operating environment of the shock absorber is special, the influence of shock arising from the passage of mountainous areas or sags or crests and other severe road conditions on an adjusting valve is relatively large, and due to the excessive number of springs in the shock absorber, the springs are out of order easi- ly. In addition, with a damping adjusting block moving under the pushing of a valve element bar, energy loss may be found on drive components, and the drive efficiency is reduced greatly, which, in turn, makes the damping adjusting efficiency significantly compro- mised. In terms of the assembly and maintenance of a damper, built-in valves also bring much inconvenience to the assembly and disassembly for maintenance. Therefore, in order to solve the above problems, it is required to provide a damping continuous ad- justing valve for a shock absorber. By reducing the number of drive components, the damping adjusting efficiency problem can be solved properly, assembly and disassembly are convenient, costs are saved, and continuous adjustment in damping may also be avail- able.

SUMMARY

In terms of the defects of the existing structure, the pre- sent disclosure aims to improve the damping adjusting efficiency of a damping adjusting valve. When a valve element disk rotates, two small damping holes in the valve element disk are always com- municated with arc-shaped damping holes in an adjusting valve base; without current across a coil, large damping holes in the valve element disk are tangent to large damping holes in the ad-

Justing valve base; after the coil is energized, an adjustment in large damping may be implemented. This makes the adjustment in damping more stable in varying environments, thereby yielding the effect of damping shock throughout an automobile, and improving the smoothness of the automobile. In addition, on the aspect of the stroke of the damping adjusting valve, a limiting device is provided in the present disclosure to limit the stroke within a certain range, the unnecessary idle stroke is reduced, and the damping adjusting efficiency is improved.

The damping adjusting valve with the limiting device in the present disclosure has the following technical solution:

The damping adjusting valve with the limiting device includes an encapsulated solenoid valve assembly, an encapsulating assem- bly, an adjusting valve base, and a valve bottom assembly, wherein the encapsulated solenoid valve assembly includes a solenoid coil, a solenoid, and a valve element disk; the solenoid coil and the solenoid are used for producing an electromagnetic effect and are arranged on the valve element disk; the encapsulating assembly in- cludes a solenoid valve outer cylinder for encapsulating the sole-

noid valve assembly, and a solenoid valve encapsulating end cap; the valve element disk is rotationally arranged on the adjusting valve base and is communicated with the adjusting valve base; the valve bottom assembly includes a valve bottom main body; the ad-

Jjusting valve base is arranged on the valve bottom main body and is communicated with the valve bottom main body; and a communica- tion area between the valve element disk that rotates and the ad-

Justing valve base is adjustable.

Further, the encapsulated solenoid valve assembly further in- cludes an encapsulated valve main body; the solenoid valve and the solenoid are arranged in the encapsulated valve main body; the so- lenoid is coaxially installed on the valve element disk; and the encapsulated valve main body is connected with the solenoid valve encapsulating end cap.

Further, the valve element disk is provided with a plurality of small damping holes and large damping holes uniformly; large damping holes with the same number as that of the large damping holes in the valve element disk are formed in the adjusting valve base; the small damping holes in the valve element disk are always communicated with arc-shaped damping holes in the adjusting valve base; the large damping holes in the valve element disk are tan- gent to the large damping holes in the adjusting valve base; and when the valve element disk rotates, the large damping holes in the valve element disk are communicated with the large damping holes in the adjusting valve base, achieving continuous adjustment in damping.

Further, the arc-shaped damping holes with the same number as that of the small damping holes are formed in the adjusting valve base; and when the valve element disk doesn't rotate, the small damping holes are communicated with the arc-shaped damping holes.

Further, a torsion restoring spring for resetting the valve element disk is arranged on the valve element disk.

Further, a stroke limit is set between the valve element disk and the adjusting valve base.

Further, arc-shaped limiting slots are formed in the adjust- ing valve base, limiting rods are arranged at a bottom of the valve element disk, and the limiting rods are inserted into the limiting slots.

Further, the valve bottom assembly further includes a flow passage ring, and the flow passage ring is installed on the valve bottom main body for oil flow.

In summary, the present disclosure includes at least one of the following beneficial effects: 1. the adjusting valve has a simple overall structure, is easy to assemble and disassemble and convenient to manufacture, and can achieve the continuous adjustment effect of damping; 2. without the current across the solenoid valve, the small damping holes are in a normally-open state, and part of damping can be adjusted to improve the smoothness of an automobile on a common road surface; 3. the damping holes are distributed uniformly in the valve element disk, the arc-shaped damping holes in the adjusting valve base are communicated with the small damping holes, the large damping holes are in close conjunction with the large damping holes in the valve element disk, and given the current, the sole- noid valve can implement the continuous adjustment in damping; and as the stroke limit is set between the valve element disk and the adjusting valve base, a stroke of rotation is limited within a certain range; and an electronically controlled unit is arranged additionally on the automobile to control the rotary angle and the current of the valve element disk accurately, which can accurately adjust the damping in various road conditions; 4. due to the integrated design of a valve element and a valve disk of the valve element disk, the transmission of interme- diate components is reduced, malfunction in the transmission is avoided, the adjusting efficiency can be improved, and the effect of the accurate and continuous adjustment in the damping is achieved; 5. the external solenoid valve is more convenient to assem- ble, disassemble, and maintain compared with the built-in solenoid valve, whereas the built-in solenoid valve is generally installed on a piston of a piston rod, which has the higher requirement for connectors as the piston is always in a moving state, and the ex- ternal solenoid valve can well overcome the above defect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of the present dis- closure;

FIG. 2 is an exploded schematic diagram of a valve assembly 5 according to the present disclosure;

FIG. 3 is a schematic diagram of a valve element disk accord- ing to the present disclosure; and

FIG. 4 is a schematic diagram of an adjusting valve base ac- cording to the present disclosure;

Brief description of reference signs: 1. Encapsulated solenoid valve assembly; 11. Solenoid coil; 12. Solenoid; 13. Valve element disk; 131. Limiting rod; 14. En- capsulated valve main body; 15. Torsion restoring spring; 16. Mag- netic-inductive ring; 2. Encapsulating assembly; 21. Solenoid valve outer cylinder; 22. Solenoid valve encapsulating end cap; 3.

Adjusting valve base; 31. Arc-shaped damping hole; 32. Limiting slot; 4. Valve bottom assembly; 41. Valve bottom main body; 411.

Orifice; 42. Flow passage ring; 43. Laminate; 5. Small damping hole; and 6. Large damping hole.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The implementations of the present disclosure will be ex- plained by specific examples. A person skilled in the art could easily conceive of other advantages and effects of the present disclosure from the disclosure of the specification. The present disclosure may be further implemented or applied by other differ- ent implementations, and various modifications or changes may also be made to details in the specification based on different points of view and applications, without departing from the spirit of the present disclosure.

The embodiment of the present disclosure will be further de- scribed in detail with reference to FIGS. 1-4.

The embodiment of the present disclosure discloses a damping adjusting valve with a limiting device. Referring to FIG. 1, the damping adjusting valve with the limiting device includes an en- capsulated solenoid valve assembly 1, an encapsulating assembly 2, an adjusting valve base 3, and a valve bottom assembly 4. The en- capsulated solenoid valve assembly 1 includes a solenoid coil 11,

a solenoid 12, a valve element disk 13, and an encapsulated valve main body 14; the valve element disk 13 is formed by integrating a valve element and a valve disk; the encapsulated valve main body 14 is coaxially arranged on the valve element disk 13; a magnetic- inductive ring 16 is coaxially arranged on the valve element of the valve element disk 13; the solenoid coil 11 winds the magnet- ic-inductive ring 16; the solenoid coil 11 and the magnetic- inductive ring 16 are coaxial with the valve element of the valve element disk 13; and a torsion restoring spring 15 is coaxially arranged on the valve element of the valve element disk 13, and is positioned in the encapsulated valve main body 14. After the sole- noid coil 11 is energized, an electromagnetic effect is generated inside the solencid coil, under which the solenoid 12 rotates to drive the valve element disk 13 to rotate, thereby yielding the electromagnetic effect.

The encapsulating assembly 2 includes a solenoid valve outer cylinder 21 and a solenoid valve encapsulating end cap 22; the en- capsulated solenoid valve assembly 1 is arranged in the solencid valve outer cylinder 21; and the solenoid valve encapsulating end cap 22 is arranged on a top of the solenoid valve outer cylinder 21 to close the solenoid valve outer cylinder 21. The solenoid valve encapsulating end cap 22 is fixed to the top of the solenoid valve outer cylinder 21 through threads, and butts against an end face of the solenoid valve outer cylinder 21. The solenoid valve outer cylinder 21 is in welded connection with a shock absorber outer cylinder, making an overall shock absorber integrated.

Referring to FIGS. 2, 3, and 4, the adjusting valve base 3 is positioned in the solenoid valve outer cylinder 21; the valve disk of the valve element disk 13 is coaxially and rotationally ar- ranged on the adjusting valve base 3; and a plurality of small damping holes 5 and large damping holes 6 are formed in the valve element disk 13 uniformly. In the embodiment, two small damping holes 5 and six large damping holes are provided; the two small damping holes 5 are symmetrically formed in the valve element disk 13; the four large damping holes 6 are divided in pairs, and are symmetrical with each other; and the two groups of large damping holes 6 are divided evenly by the two small damping holes 5. Large damping holes with the same number and positions are also formed in the adjusting valve base 3; and meanwhile, two arc-shaped damp- ing holes 31 which are symmetrical with each other are formed in the adjusting valve base 3, and the two arc-shaped damping holes 31 are in one-to-one correspondence with the two small damping holes 5 in positions.

When the solenoid valve is not energized, the valve element disk 13 does not rotate, the two small damping holes 5 are commu- nicated with the two arc-shaped damping holes 31, which may adjust part of damping; and the large damping holes 6 in the valve ele- ment disk 13 are respectively tangent to the large damping holes © in the adjusting valve base 3, forming a critical state. When the solenoid valve is energized, the valve element disk 13 rotates, the two small damping holes 5 in the valve element disk 13 are al- so communicated with the arc-shaped damping holes 31 in the ad- justing valve base 3, as a result, the four large damping holes 6 in the valve element disk 13 are gradually superposed with the four large damping holes 6 in the adjusting valve base 3, and when they are superposed exactly, the damping is the minimal.

Referring FIGS. 3 and 4, in order to limit a damping adjust- ing stroke within a certain range to reduce an unnecessary idle stroke, two arc-shaped limiting slots 32 are symmetrically formed in the adjusting valve base 3, and two limiting rods 131 are ar- ranged at a bottom of the valve element disk 13; and the two lim- iting rods 131 are respectively inserted into the two limiting slots 32, which limits an angle of rotation between the valve ele- ment disk 13 and the adjusting valve base 3 to as small as 30°.

Referring to FIGS. 1 and 2, the valve bottom assembly 4 in- cludes a valve bottom main body 41 and a flow passage ring 42; the valve bottom main body 41 is fixed to a lower end of the adjusting valve base 3 through threads, so that an overall valve body is kept communicated; the flow passage ring 42 is arranged around a side wall of the adjusting valve bottom main body 41, an outer wall of the flow passage ring butts against an inner wall of the solenoid valve outer cylinder 21, and a plurality of small holes are formed in the flow passage ring 42 for oil flowing therefrom.

Laminates 43 are securely arranged on upper and lower sides of the valve bottom main body 41; the laminates 43 are fixed to the valve bottom main body 41 by bolts; a plurality of small holes are formed in the laminates 43; two symmetrical orifices 411 are formed in the valve bottom main body 41, and are communicated with the small holes in the laminates 43; and oil for the shock absorb- er may flow into the solenoid valve through these small holes.

An operating principle of the damping adjusting valve with the limiting device is as follows: when the solenoid valve is not energized, the valve element disk 13 does not rotate, the two small damping holes 5 are communicated with the two arc-shaped damping holes 31, which may adjust part of damping; and the small damping holes 5 in the valve element disk 13 are respectively tan- gent to the large damping holes 6 in the adjusting valve base 3, forming a critical state. When the solenoid valve is energized, the valve element disk 13 rotates, the two small damping holes 5 in the valve element disk 13 are also communicated with the arc- shaped damping holes 31 in the adjusting valve base 3, as a re- sult, the four large damping holes 6 in the valve element disk 13 are gradually superposed with the four large damping holes 6 in the adjusting valve base 3, and when they are superposed exactly, the damping is the minimal.

It should be noted that the above embodiment is only used to illustrate the technical scheme of the present disclosure, but is not limited thereto. Although the present disclosure has been de- scribed in detail with reference to the preferred embodiment, it should be understood by those of ordinary skill in the art that modifications or equivalent substitutions may be made to the tech- nical scheme of the present disclosure without departing from the spirit and scope of the technical scheme of the present disclo- sure, and those modifications or equivalent substitutions shall all fall within the scope of the claims of the present disclosure.

Claims

CONCLUSIONS

1. Restrictor damping control valve characterized in include: the encapsulated solenoid valve assembly (1), the encapsulated solenoid valve assembly (1) consists of a solenoid coil (11), an electromagnet (12) and a coil disc (13), the magnet coil (11) and an electromagnet (12) for generating an electromagnetic effect and placed on the coil disc (13); the encapsulated assembly (2), the encapsulated assembly (2) consisting of a solenoid valve outer cylinder (21) and a solenoid valve end cap (22) for mounting an encapsulated solenoid valve assembly (1), the encapsulated solenoid valve end cap (22) for closing of the solenoid valve outer cylinder (21) the control valve bottom (3), with the coil disc (13) rotating and located on the control valve bottom (3) and communicating with the control valve bottom (3); the valve bottom unit (4), including the valve bottom body (41), the control valve base (12) is placed on the valve bottom body (41) and communicates with each other, and the communication area between the valve core disc (13) and the control valve base (3) when it turns is adjustable.

The restrictor damping control valve according to Claim 1, characterized in that the encapsulated solenoid valve assembly (1) further comprises an encapsulated valve body (14), the solenoid coil (11) and the solenoid (12) in the encapsulated valve body (1). 14) are located, the solenoid (12) is mounted coaxially on the coil disc (13), and the encapsulated valve body (14) is connected to the encapsulated end cover (22).

A restrictor damping control valve according to Claim 2, characterized in that the base of the control valve (3) is uniformly provided with a plurality of small damping holes (5) and large damping holes (6), the base of the damping valve (3 ) has the same number of large damping holes (©), the small damping holes (5)

and the base of the control valve (3) on the spool disc (13) are always connected to the holding, the large damping hole (€) on the spool disc (13) touches the large damping hole (6) on the control valve base ( 3), the large damping hole (6) rotates on the spool disc (13). It can be connected to the large damping hole (6) on the control valve base (3) for continuous damping adjustment.

The restrictor damping control valve according to Claim 3, characterized in that the base of the control valve (3) has an arcuate damping hole (31) with the same number as the small damping hole (5), and the small damping hole ( 5), when the spool disc (13) is not rotating, is connected to the arcuate damping hole (31).

A damping control valve with a restrictor according to Claim 2, characterized in that the spool disc (13) is provided with a torque recovery spring (15) for resetting the spool disc (13).

A damping control valve with a restrictor according to Claim 5, characterized in that the travel limit is between the spool disc (13) and the control valve base (3).

A damping control valve with limiter according to Claim 6, characterized in that the control valve base (3) is provided with an arcuate limit groove (32), the spool disc (13) is provided with a limit rod (131) at the bottom, and the limit rod {131) is inserted in the limit groove (32).

A damping control valve with a restriction device according to Claim 1, characterized in that the valve bottom unit (4) further includes an overflow ring (42), the overflow ring (42) being mounted on the valve bottom body (41), for the flow of the oil.