阅读说明：本技术 一种减振器阀系 (Shock absorber valve system ) 是由 刘全兴 于 2020-08-11 设计创作，主要内容包括：本发明涉及一种减振器阀系,包括固定在活塞杆一端的复原阀系以及固定在贮油缸内底部的压缩阀系,所述复原阀系包括支撑垫、弹簧片、第一流通阀片、第一节流阀片、第一压缩阀座、第一调整垫片、第一阀片组合、第二调整垫片、定位套、复原阀弹簧座、复原阀弹簧和复原阀螺母,所述压缩阀系包括螺杆、第二阀片组合、第二节流阀片、第二压缩阀座、第二流通阀片、第一压缩阀弹簧、第二压缩阀弹簧和压缩阀螺母。本发明减振器阀系对于阻尼调整来讲,前期低速段可以获得较高曲率,但到高速端因为弹簧的介入后,阻尼力难以较大提升,阻尼曲线斜率将下降,近乎斜率为零；但该特性对减振器的保护也是显而易见的。(The invention relates to a shock absorber valve system which comprises a recovery valve system fixed at one end of a piston rod and a compression valve system fixed at the inner bottom of an oil storage cylinder, wherein the recovery valve system comprises a supporting pad, a spring piece, a first flow valve plate, a first throttle valve plate, a first compression valve seat, a first adjusting gasket, a first valve plate combination, a second adjusting gasket, a positioning sleeve, a recovery valve spring seat, a recovery valve spring and a recovery valve nut, and the compression valve system comprises a screw rod, a second valve plate combination, a second throttle valve plate, a second compression valve seat, a second flow valve plate, a first compression valve spring, a second compression valve spring and a compression valve nut. For damping adjustment, the shock absorber valve system can obtain higher curvature at the early low-speed section, but the damping force is difficult to be greatly improved after the high-speed end is intervened by a spring, the slope of a damping curve is reduced and is nearly zero; but this feature is also obvious for the protection of the shock absorber.)

1. The utility model provides a shock absorber valve system, is including fixing the rebound valve system and the compression valve system of fixing the bottom in the oil storage cylinder at piston rod one end which characterized in that:

the recovery valve system comprises a supporting pad, a spring piece, a first circulation valve plate, a first throttle valve plate, a first compression valve seat, a first adjusting gasket, a first valve plate combination, a second adjusting gasket, a positioning sleeve, a recovery valve spring seat, a recovery valve spring and a recovery valve nut, wherein the first adjusting gasket, the first valve plate combination, the second adjusting gasket, the positioning sleeve, the recovery valve spring seat and the recovery valve spring are all positioned in the first compression valve seat, the first adjusting gasket, the first valve plate combination, the second adjusting gasket, the positioning sleeve, the recovery valve spring seat and the recovery valve spring are sleeved on the periphery of the recovery valve nut, the recovery valve nut penetrates through the first compression valve seat and is connected with a piston rod, the recovery valve spring is positioned between the recovery valve spring seat and the recovery valve nut, the positioning sleeve is positioned in the recovery valve spring and is sleeved on the periphery of a piston shaft, the second adjusting gasket is positioned between the recovery valve nut and the positioning sleeve, the first valve plate assembly and the first adjusting gasket are positioned between the restoring valve spring seat and the first compression valve seat, the first circulation valve plate, the first throttle valve plate, the spring piece and the supporting pad are positioned on one side of the first compression valve seat far away from the restoring valve nut, and the first circulation valve plate, the first throttle valve plate, the spring piece and the supporting pad are sleeved on the periphery of the piston rod;

the compression valve system comprises a screw, a second valve plate combination, a second throttle valve plate, a second compression valve seat, a second circulation valve plate, a first compression valve spring, a second compression valve spring and a compression valve nut, wherein the second valve plate combination, the second throttle valve plate and the second circulation valve plate are located inside the second compression valve seat, the second valve plate combination, the second throttle valve plate and the second circulation valve plate are sleeved with the periphery of the screw, the first compression valve spring and the second compression valve spring are sleeved on the periphery of the screw, the screw penetrates through the second compression valve seat and is connected with the compression valve nut, and the second compression valve seat is fixed inside the oil storage cylinder.

2. The shock absorber valve train of claim 1 wherein said first valve plate assembly is comprised of a plurality of valve plates.

3. The valve train of claim 1 wherein the second valve plate assembly is comprised of a plurality of valve plates.

4. The valve train of claim 1 wherein the first shim has a plurality of first throttling grooves disposed circumferentially thereon.

5. The valve train of claim 4, wherein the second throttle plate is circumferentially provided with a plurality of second throttle grooves.

6. The shock absorber valving system of claim 5, wherein the number of second throttling grooves is less than the number of first throttling grooves.

7. The valve train of claim 1 wherein the first compression valve seat has a plurality of first through holes and the second compression valve seat has a plurality of second through holes, the number of first through holes being greater than the number of second through holes.

8. A shock absorber valving system as set forth in claim 1 wherein said first compression valve spring has an inner periphery provided with a plurality of blinded portions.

Technical Field

The invention relates to the technical field of shock absorbers, in particular to a shock absorber valve system.

Background

The valve system of the existing shock absorber has the characteristics of large adjustable range, good reliability, low requirement on the strength of the valve plate, small slope of a high-speed characteristic curve and the like, and the magnitude of the torque force of the reset valve nut directly influences the pre-tightening amount of the spring and the valve plate. The spring valve plate combined piston valve is overlapped with one or a plurality of valve plates at the valve port of the lower part of the piston and forms a restoring valve spring group together with a restoring valve spring. The large pre-tightening amount of the spiral spring and the large rigidity of the valve plate are fully utilized to combine the spring characteristic with wide coverage so as to meet the requirements of different external characteristics of the shock absorber. The existing damper valve system has more parts and complex assembly.

Disclosure of Invention

The present invention is directed to a shock absorber valve train that solves the problems set forth above in the background.

In order to achieve the purpose, the invention provides the following technical scheme:

a shock absorber valve system comprises a recovery valve system fixed at one end of a piston rod and a compression valve system fixed at the inner bottom of an oil storage cylinder, wherein the recovery valve system comprises a supporting pad, a spring piece, a first circulation valve plate, a first throttle valve plate, a first compression valve seat, a first adjusting gasket, a first valve plate combination, a second adjusting gasket, a positioning sleeve, a recovery valve spring seat, a recovery valve spring and a recovery valve nut, the first adjusting gasket, the first valve plate combination, the second adjusting gasket, the positioning sleeve, the recovery valve spring seat and the recovery valve spring are all positioned in the first compression valve seat, the first adjusting gasket, the first valve plate combination, the second adjusting gasket, the positioning sleeve, the recovery valve spring seat and the recovery valve spring are sleeved on the periphery of the recovery valve nut, the recovery valve nut penetrates through the first compression valve seat and is connected with the piston rod, the recovery valve spring is positioned between the recovery valve spring seat and the recovery valve nut, the first circulation valve plate, the first throttle valve plate, the spring plate and the supporting pad are positioned on one side of the first compression valve seat far away from the restoration valve nut, and the first circulation valve plate, the first throttle valve plate, the spring plate and the supporting pad are sleeved on the periphery of the piston rod;

the compression valve system comprises a screw, a second valve plate combination, a second throttle valve plate, a second compression valve seat, a second circulation valve plate, a first compression valve spring, a second compression valve spring and a compression valve nut, wherein the second valve plate combination, the second throttle valve plate and the second circulation valve plate are located inside the second compression valve seat, the second valve plate combination, the second throttle valve plate and the second circulation valve plate are sleeved with the periphery of the screw, the first compression valve spring and the second compression valve spring are sleeved on the periphery of the screw, the screw penetrates through the second compression valve seat and is connected with the compression valve nut, and the second compression valve seat is fixed inside the oil storage cylinder.

Preferably, the first valve plate combination is composed of a plurality of valve plates.

Preferably, the second valve plate combination is composed of a plurality of valve plates.

Preferably, a plurality of first throttling grooves are formed in the circumferential direction of the first adjusting shim.

Preferably, a plurality of second throttle grooves are formed in the circumferential direction of the second throttle plate.

Preferably, the number of the second throttle grooves is smaller than the number of the first throttle grooves.

Preferably, a plurality of first through holes are formed in the first compression valve seat, a plurality of second through holes are formed in the second compression valve seat, and the number of the first through holes is larger than that of the second through holes.

Preferably, the inner circumference of the first compression valve spring is provided with a plurality of shielding portions.

Compared with the prior art, the invention has the beneficial effects that: for damping adjustment, the shock absorber valve system can obtain higher curvature at a low-speed section in the early stage, but the damping force is difficult to be greatly improved after the high-speed end is intervened by a spring, the slope of a damping curve is reduced and is nearly zero; but this feature is also obvious for the protection of the shock absorber.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a rebound valve in a shock absorber valve train in accordance with the present invention;

FIG. 2 is an exploded view of a rebound valve in the valve train of the shock absorber of the present invention;

FIG. 3 is a schematic view of a compression valve in the shock absorber valving of the present invention;

figure 4 is an exploded view of a compression valve in a shock absorber valving of the present invention.

In the figure: 1. a reset valve system; 101. a support pad; 102. a spring plate; 103. a first flow valve plate; 104. a first throttle plate; 105. a first compression valve seat; 106. a first adjustment pad; 107. a first valve plate combination; 108. a restoring valve spring seat; 109. a positioning sleeve; 110. a second adjustment pad; 111. a restoring valve spring; 112. restoring the valve nut; 113. a first throttle groove; 114. a first through hole; 2. compressing the valve train; 201. a screw; 202. the second valve plate is combined; 203. a second throttle plate; 204. a second compression valve seat; 205. a second flow valve plate; 206. a first compression valve spring; 207. a second compression valve spring; 208. compressing the valve nut; 209. a second throttle groove; 210. a second through hole; 211. a shielding portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, in an embodiment of the present invention, a shock absorber valve system includes a restoring valve system 1 fixed at one end of a piston rod (not shown) and a compression valve system 2 fixed at an inner bottom of an oil storage cylinder (not shown), where the restoring valve system 1 includes a support pad 101, a spring plate 102, a first flow valve plate 103, a first throttle plate 104, a first compression valve seat 105, a first adjustment gasket 106, a first valve plate assembly 107, a second adjustment gasket 110, a positioning sleeve 109, a restoring valve spring seat 108, a restoring valve spring 111 and a restoring valve nut 112, the first adjustment gasket 106, the first valve plate assembly 107, the second adjustment gasket 110, the positioning sleeve 109, the restoring valve spring seat 108 and the restoring valve spring 111 are located inside the first compression valve seat 105, and the first adjustment gasket 106, the first valve plate assembly 107, the second adjustment gasket 110, the positioning sleeve 109, the restoring valve spring seat 108 and the restoring valve spring 111 are located at an outer periphery of the restoring valve nut 112, the restoring valve nut 112 penetrates through the first compression valve seat 105 to be connected with the piston rod, the restoring valve spring 111 is located between the restoring valve spring seat 108 and the restoring valve nut 112, the positioning sleeve 109 is located inside the restoring valve spring 111 and sleeved on the periphery of the piston shaft, the second adjusting gasket is located between the restoring valve nut 112 and the positioning sleeve 109, the first valve plate combination 107 and the first adjusting gasket 106 are located between the restoring valve spring seat 108 and the first compression valve seat 105, the first flow valve plate 103, the first throttle valve plate 104, the spring plate 102 and the supporting pad 101 are located on one side, away from the restoring valve nut 112, of the first compression valve seat 105, and the first flow valve plate 103, the first throttle valve plate 104, the spring plate 102 and the supporting pad 101 are sleeved on the periphery of the piston rod.

The compression valve system 2 comprises a screw 201, a second valve plate combination 202, a second throttle valve plate 203, a second compression valve seat 204, a second flow valve plate 205, a first compression valve spring 206, a second compression valve spring 207 and a compression valve nut 208, wherein the second valve plate combination 202, the second throttle valve plate 203 and the second flow valve plate 205 are located inside the second compression valve seat 204, the second valve plate combination 202, the second throttle valve plate 203 and the second flow valve plate 205 are sleeved with the periphery of the screw 201, the first compression valve spring 206 and the second compression valve spring 207 are sleeved on the periphery of the screw 201, the screw 201 penetrates through the second compression valve seat 204 and is connected with the compression valve nut 208, and the second compression valve seat 204 is fixed inside the oil storage cylinder.

The first valve plate assembly 107 is composed of a plurality of valve plates. The second valve plate assembly 202 is composed of a plurality of valve plates. The first adjusting shim 106 is circumferentially provided with a plurality of first throttling grooves 113. A plurality of second throttle grooves 209 are formed in the circumferential direction of the second throttle valve plate 203. The number of second throttle slots 209 is less than the number of first throttle slots 113. A plurality of first through holes 114 are formed in the first compression valve seat 105, a plurality of second through holes 210 are formed in the second compression valve seat 204, and the number of the first through holes 114 is larger than that of the second through holes 210. The inner circumference of the first compression valve spring 206 is provided with a plurality of shielding portions 211.

When in use, the characteristic curve of the valve system of the shock absorber is controlled in three stages:

control of the recovery valve train:

level 1 control: controlling the size parameters of the first throttling groove (such as the thickness of the first adjusting gasket, the width of the first throttling groove and the number of the first throttling groove, namely the grooving area) by design;

and 2, level control: the rigidity of the restoring valve spring, the rigidity of the first valve plate combination and the pre-tightening amount of the first valve plate combination are controlled by design;

and 3, control of the level 3: by designing the opening degree of the passage (such as the diameter of the piston and the first compression valve seat, and the number of the holes, that is, the area of the flow hole) in the valve system.

Control of the compression valve train:

level 1 control: the size parameters of the second throttling groove are controlled by design (the thickness and the groove width of the second throttling valve plate, the number of grooves is the total area of the groove, and the second throttling groove can be engraved on an oil line of the piston or the valve seat); the smaller the total area of the normal through holes is, the larger the damping force generated by the level 1 control is; conversely, the larger the total area, the smaller the damping force generated by the 1-stage control.

And 2, level control: the rigidity of the second compression valve spring or the rigidity of the first compression valve spring and the pre-tightening amount of the second flow valve plate are controlled by design;

the larger the spring stiffness or the valve plate stiffness of the first compression valve and the second compression valve and the pre-tightening amount of the valve plate are, the larger the damping force generated by the 2-level control is; the smaller the opposite rigidity is, the smaller the damping force generated by the 2-level control is;

the larger the compression amount of the first compression valve spring and the second compression valve spring is, the larger the generated damping force is, and conversely, the smaller the generated damping force is.

And 3, level-3 control: by designing the opening degree of the passage (such as the aperture of the piston and the compression valve seat, and the number of the holes, namely the area of the flow hole) on the valve system. The larger the flow hole area, the smaller the damping force generated and conversely the larger.

For damping adjustment, the shock absorber valve system can obtain higher curvature at a low-speed section in the early stage, but the damping force is difficult to be greatly improved after the high-speed end is intervened by a spring, the slope of a damping curve is reduced and is nearly zero; but this feature is also obvious for the protection of the shock absorber.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.