CN202756527U - Rebound valve with fully open valve plate - Google Patents
Rebound valve with fully open valve plate Download PDFInfo
- Publication number
- CN202756527U CN202756527U CN201220429271.5U CN201220429271U CN202756527U CN 202756527 U CN202756527 U CN 202756527U CN 201220429271 U CN201220429271 U CN 201220429271U CN 202756527 U CN202756527 U CN 202756527U
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- China
- Prior art keywords
- piston
- valve plate
- valve
- rebound
- elastic body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000011084 recovery Methods 0.000 claims description 35
- 230000006835 compression Effects 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 32
- 239000006096 absorbing agent Substances 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 20
- 230000035939 shock Effects 0.000 description 13
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 6
- 238000013016 damping Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000036425 denaturation Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a rebound valve with a fully open valve plate. The rebound valve comprises a piston, a connection rod, a support gasket, a circulation valve plate, a rebound valve plate and an elastic body, wherein the piston and the connection rod are arranged in a cylinder barrel, the support gasket and the circulation valve plate are sleeved on the connection rod and located at the upper portion of the piston, the rebound valve plate is arranged at the lower portion of the piston, a guide part is arranged on the connection rod at the lower portion of the piston, a fastening nut is fixed at the bottom end of the connection rod, one end of the guide part butts against the lower portion of the piston, the other end of the guide part butts against the fastening nut, the rebound valve plate can be vertically and movably sleeved on the outside of the guide part, and two ends of the elastic body respectively butt against the fastening nut and the rebound valve plate. When an absorber bears large force instantly, the rebound valve with the fully open valve plate can enable the rebound valve plate to be completely separated from a rebound face of the piston in rebound stroke, enables the rebound valve to be completely opened, increases oil liquid flow in unit time in rebound stroke, effectively improves comfortableness when a vehicle runs on a bump road face at high speed, and prolongs service life of a part.
Description
Technical Field
The utility model relates to a recover valve structure, especially a recover valve with open valve block entirely.
Background
The vibration damper is a chassis link, and its working mechanism is to convert the mechanical energy of partial vibration generated by the automobile suspension into heat energy and to radiate the heat by wind speed during driving. Of these, a dual-tube shock absorber (having a cylinder and a reservoir) is a widely used and widely used shock absorber. The basic working principle is as follows: when the vehicle runs, along with the relative motion between the piston and the cylinder, oil in the cylinder is throttled through the corresponding valve, so that throttling pressure drop is generated, and a damping force opposite to the direction of the relative motion speed is formed. When the shock absorber is in a restoring stroke, oil in an upper cavity of the cylinder barrel is boosted, and the oil flows into a lower cavity through a restoring valve on the piston to generate restoring resistance. At the moment, the connecting rod is continuously moved out of the upper cavity, so that the lower cavity is filled with insufficient oil which flows into the lower cavity from the upper cavity, the vacuum phenomenon instantly occurs in the lower cavity of the working cylinder, and the oil is timely supplemented to the lower cavity of the working cylinder from the oil storage cavity through the compensation valve on the bottom valve so as to ensure that the idle stroke does not occur in the subsequent compression stroke.
The existing shock absorber generally adopts a small hole throttling mode with limited flow to realize the flow of oil liquid in the upper cavity and the lower cavity of the piston in the working cylinder body. The oil liquid flows through the circulation hole of the piston, the valve plate and the hole formed by combining the spring, and the upper cylinder body and the lower cylinder body formed by dividing the piston are communicated, so that the characteristics of damping force and the like are formed. The upper surface of the piston is a restoration surface; the lower surface is a compression surface. While the shock absorber also takes the form of a flow-through valving. The flow valve system is normally in a closed state, and only when the flow pressure inside the cylinder reaches a rated value, the whole flow valve system is fully opened, thereby achieving the limitation of reducing the oil flow on both sides of the piston to the maximum extent. The structure of the known shock absorber restoring valve system is mainly that a restoring valve spring, a restoring valve body and a restoring valve sheet are placed in a frame structure, and then a restoring valve nut is fastened on a piston. The restoring valve system and the restoring spring seat of the structure need to move in a frame-closed structure so as to achieve the aim of damping oil liquid flowing through the restoring valve and the circulating valve. However, the result is mostly satisfied by the elastic deformation of the valve plate and the spring, the size of the valve opening is limited by the toughness and the rigidity of the valve plate, and the stroke of the restoring valve spring seat is very small, so that the displacement and the deformation of the valve plate are limited, and the whole valve system cannot be opened, and therefore, the requirement of stably increasing the damping force value of the shock absorber during high-speed vibration is not met. Meanwhile, when the valve system is in a high-speed impact type, the valve plate bears great impact, the durability of the valve plate is reduced, and the valve plate is easy to lose efficacy. Meanwhile, the rigidity of the restoring valve spring is limited by the diameter and the space of the restoring valve spring, and the rigidity is limited, so that the pretightening force is limited.
Fig. 1 and 2 are schematic structural views of a known restoring valve, which respectively show the flow state of liquid in a compression stroke and a restoring stroke. As shown in the figure, the restoring valve 1 has a piston 10, a lock nut 12 is provided at a lower portion of the piston 10, a restoring valve sheet 11 is provided between the piston 10 and the lock nut 12, the above components are all sleeved on a connecting rod 1000, a restoring valve support base 13 and a spring 14 are further sleeved on the lock nut 12, and the spring 14 is provided between the restoring valve support base 13 and the lock nut 12. In the compression stroke of the restoring valve 1, as shown in fig. 1, the liquid in the lower portion of the hydraulic cylinder 100 pushes up the flow valve plate 15 provided in the upper portion of the piston 10 from the bottom to the top, and enters the upper portion of the hydraulic cylinder through the piston compression flow hole 16. In the recovery stroke, as shown in fig. 2, the liquid in the lower portion of the hydraulic cylinder 100 pushes open the recovery valve plate 11 provided between the piston 10 and the lock nut 12 from the top down. Because the locking nut 12 is fixedly connected with the connecting rod 1000 in the known structure, the outer edge of the recovery valve plate 11 bends downwards under the impact of liquid, and the spring 14 is pushed to move downwards in a frame formed by the recovery valve supporting seat 13 and the locking nut 12, so that the displacement of the recovery valve plate 11 of the structure is limited by the locking nut 12, and the recovery valve plate is smaller in opening degree and cannot be opened completely due to the influences of the toughness and the rigidity of the recovery valve plate 11 and the stroke of the spring 14, and the working performance of the shock absorber is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a recover valve with full-open valve block.
Therefore, the utility model provides a recover valve with open valve block entirely, it includes: the piston is arranged in the cylinder barrel, the connecting rod is sleeved on the connecting rod, the supporting gasket is arranged on the upper portion of the piston, the circulation valve plate is arranged on the lower portion of the piston, the circulation valve plate can close a compression circulation hole formed in the piston, and the recovery valve plate can close a recovery circulation hole formed in the piston; the lower connecting rod of the piston is provided with a guide piece, and a fastening nut is fixed at the bottom end of the connecting rod; one end of the guide piece is abutted against the lower part of the piston, and the other end of the guide piece is abutted against the fastening nut; the elastic body and the reset valve plate are sleeved outside the guide piece in a vertically movable manner, and two ends of the elastic body respectively abut against the fastening nut and the reset valve plate.
The restoring valve with the full-open valve plate is characterized in that the guide piece is a guide nut which is in threaded connection with the connecting rod.
The restoring valve with the full-open valve plate is characterized in that the guide piece is a guide sliding sleeve sleeved on the connecting rod.
The restoring valve with the full-open valve plate is characterized in that a sliding gasket is arranged between the restoring valve plate and the elastic body, and the sliding gasket is movably sleeved outside the guide piece.
The restoring valve with the full-open valve plate is characterized in that the elastic body is a belleville spring, one end with a large caliber abuts against the sliding washer, and one end with a small caliber abuts against the fastening nut.
The restoring valve with the full-open valve plate is characterized in that the elastic body is a spiral spring, the upper part of the elastic body abuts against the sliding washer, and the lower part of the elastic body abuts against the fastening nut.
The restoring valve with the full-open valve plate is characterized in that a throttle valve plate is further arranged between the support gasket and the piston, the throttle valve plate is sleeved on the connecting rod, and the outer diameter of the throttle valve plate is smaller than the outer diameter of the restoring flow hole of the piston.
The utility model discloses a recover valve with open valve block entirely, through set up the guide between the lower part at the piston and fastening nut, the valve block will recover, the supporting washer, the equal cover of elastomer is established on the guide, and can follow this guide, slide down, be in the recovery state when the shock absorber, the inside hydraulic pressure force of hydraulic cylinder is greater than when the precompression of elastomer, under the effect of hydraulic pressure, recover the valve block, the supporting washer can be followed the whole lapse of guide, promote the elastomer further compression, make the recovery face separation of the valve block that recovers whole and piston, form the state of opening the valve completely. Compared with the prior art, the utility model discloses a structure can make the face that recovers that the valve block leaves the piston completely recovering the stroke when the instantaneous atress of shock absorber is great, will recover the valve and all open, increases the fluid flow in the unit interval when recovering the stroke, has improved the high-speed travelling comfort when jolting the road surface of vehicle effectively, has improved the life of part.
In addition, through setting up the throttle valve piece, can adjust the intrinsic circulation area who recovers the circulation hole of piston as required, improve the application scope of piston, reduce manufacturing cost.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
FIG. 1 is a schematic cross-sectional view of a known restoring valve illustrating the flow of fluid during a compression stroke;
FIG. 2 is another schematic cross-sectional view of a known restoring valve illustrating the flow of liquid during a restoring stroke;
fig. 3 is a schematic structural view of the restoring valve with the fully opened valve plate of the present invention;
fig. 4 shows the flow of the fluid during the compression stroke of the restoring valve according to the present invention;
fig. 5 shows the flow state of the liquid in the recovery stroke of the recovery valve of the present invention.
The reference numbers illustrate:
1. restoring valve 10, piston 11, restoring valve plate 12 and locking nut
13. A restoring valve support seat 14, a spring 15, a flow valve plate 16 and a compression flow through hole
100. Hydraulic cylinder 1000, connecting rod 2, recovery valve 20 and piston
200. Hydraulic cylinder 201, compression flow hole 202, restoration flow hole 203, restoration surface
204. Compression surface 21, return valve sheet 22, fastening nut 23, and slide washer
24. Elastic body 25, flow valve sheet 26, guide 27, throttle valve sheet
28. Flow valve spring 29, support washer 2000, connecting rod
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
As shown in fig. 3, the utility model provides a rebound valve 2 with full open valve piece, include: the piston 20 and the connecting rod 2000 are arranged in the hydraulic cylinder barrel 200, the supporting gasket 29, the flow valve plate 25 and the recovery valve plate 21 are arranged on the upper portion of the piston 20, the recovery valve plate 21 is arranged on the lower portion of the piston 20, the connecting rod 2000 is sleeved with the flow valve plate 25, the compression flow hole 201 formed in the piston 20 can be closed, and the recovery flow hole 202 formed in the piston 20 can be closed by the recovery valve plate 21. Wherein, the lower connecting rod of the piston 20 is provided with a guide 26, and a fastening nut 22 is fixed at the bottom end of the connecting rod 2000; one end of the guide 26 abuts against the lower part of the piston 20, and the other end abuts against the fastening nut 22; an elastic body 24 and a reset valve plate 21 are sleeved outside the guide member 26 in a vertically movable manner, and two ends of the elastic body 24 respectively abut against the fastening nut 22 and the reset valve plate 21.
The guide 26 may be a guide nut screwed to the connecting rod 2000. The guiding element 26 may also be a guiding sliding sleeve sleeved on the connecting rod 2000.
Further, in order to support the rebound valve sheet and the elastic body 24 well, a sliding washer 23 is arranged between the rebound valve sheet 21 and the elastic body 24, and the sliding washer 23 is sleeved outside the guide 26 in a vertically movable manner.
In one embodiment, the elastic body 24 is a belleville spring, and one end with a large caliber abuts against the sliding washer 23 and one end with a small caliber abuts against the fastening nut 22. Of course, the elastic body 24 may be a coil spring.
Further, as shown in fig. 3, a throttle plate 27 is provided between the support washer 29 and the piston 20, and the throttle plate 27 is fitted around the connecting rod 2000 and has an outer diameter smaller than that of the return flow hole 202 of the piston. By adjusting the outer diameter of the throttle plate 27, it is possible to control the flow area of the return flow hole 202 inherent to the piston 20 as needed.
Please refer to fig. 4 and 5, and the working principle of the present invention will be described in detail with reference to the drawings. As shown in the figure, the upper end surface of the piston 20 is a compression surface 204, the lower end surface is a restoration surface 203, the support washer 29, the flow valve spring 28, and the flow valve sheet 25 provided on the upper portion of the compression surface 204 constitute a compression sub-assembly, and the restoration valve sheet 21, the sliding washer 23, the elastic body 24, and the guide 26 provided on the lower portion of the restoration surface 203 constitute a restoration sub-assembly. One side of the compression subassembly abuts against the shoulder of the connecting rod 2000 and the other side abuts against the compression surface 204 of the piston. The restoring sub-assembly is abutted against the piston restoring surface 203 on one side and is locked on the other side by a fastening nut 22. The sizes of the compression flow hole 201 and the restoration flow hole 202 provided in the piston 20 determine the flow areas thereof.
As shown in fig. 4 and 5, one end of the support washer 29 of the compression sub-assembly abuts against the shoulder of the connecting rod 2000, the other end abuts against the piston 20, and the throttle plate 27 is disposed between the support washer 29 and the piston 20, so that the flow area of the rebound flow hole 202 inherent to the piston 20 can be adjusted depending on the diameter of the throttle plate 27. The flow valve plate 25 covering the compression flow hole 201 of the piston 20 and the compression flow hole 201 form a compression flow section. The flow valve spring 28 is installed between the support washer 29 and the flow valve plate 25, and the flow valve plate 25 is brought into close contact with the compression surface 204 of the piston by the preload of the flow valve spring 28. During the compression stroke of the piston, the oil directly applies oil pressure to the flow valve plate 25 through the compression flow hole 201 of the piston 20. When the oil pressure is greater than the pre-pressure of the flow valve spring 28, the flow valve spring 28 is further compressed, the flow valve plate 25 is separated from the upper end surface, i.e., the compression surface 204, of the piston 20, and the compression flow hole 201 of the piston 20 is opened, so that the oil flows from the lower chamber to the upper chamber of the hydraulic cylinder 200, as shown by the arrow in fig. 4. During the recovery stroke, the compression flow hole 201 is shielded by the flow valve plate 25, and oil can only flow to the lower cavity through the recovery flow hole 202.
The guide member 26 of the recovery assembly is sleeved on the connecting rod 2000 through threads or a sliding fit and is positioned at the lower part of the piston 20, the guide member 26 is fixed by a fastening nut 22 and the surface of a recovery surface 203 of the piston 20, and the recovery valve sheet 21 slides through the guide of the guide member 26 and closes a recovery flow hole 202 on the piston 20 in a compression stroke. The slide washer 23 may slide along the guide 26, the elastic body 24 may be interposed between the slide washer 23 and the fastening nut 22, and the slide washer 23 may press the return valve sheet 21 against the return surface 203 of the piston 20 by the preload of the elastic body 24. During the recovery stroke, the oil is forced from the upper chamber of the hydraulic cylinder 200 to the lower chamber, and the hydraulic pressure is applied to the recovery valve plate 21. When the pressure of the oil is less than the pre-pressure of the elastic body 24 (the belleville spring), the rebound valve plate 21 is not pushed away, but the edge of the rebound valve plate 21 generates small flexibility denaturation under the action of the oil, and the oil generates a small amount of leakage from the gap between the piston 20 and the rebound valve plate 21 through the rebound flow hole 202 of the piston 20. When the pressure of the hydraulic oil is greater than the pre-pressure of the elastic body 24, the elastic body 24 (disc spring) will further deform, the restoring valve plate 21 pushes the sliding washer 23 to move down along the guide 26, at this time, the restoring flow hole 202 of the piston 20 is fully opened, and the oil flows from the upper chamber to the lower chamber of the hydraulic cylinder 200 through the restoring flow hole 202, as shown by the arrow in fig. 5, so that the shock absorber is prevented from being damaged due to large instantaneous stress, and the comfort of the vehicle on the high-speed bump road is improved.
The utility model discloses a rebound valve 2 with open valve block entirely, through set up guide 26 between the lower part at piston 20 and fastening nut 22, and will recover valve block 21, supporting washer 29, 24 all overlap are established on guide 26 of elastomer, and can follow this guide 26 up, down the slip, be in the recovery state when the shock absorber, hydraulic pressure inside hydraulic cylinder 200 is greater than when 24 pre-pressure of elastomer, under the effect of hydraulic pressure, recover valve block 21, supporting washer 29 can follow the whole lapse of guide 26, promote the elastomer further compression, make the recovery face 203 separation of the whole and piston of valve block 21 that recovers, form the open valve state completely. Compared with the prior art, the utility model discloses a structure can make the face 203 that recovers the piston is left completely to the valve block 21 in the stroke that recovers when the shock absorber instantaneous atress is great, will recover the valve and all open, increases the fluid flow in the unit interval when recovering the stroke, has improved the high-speed travelling comfort when jolting the road surface of vehicle effectively, has improved the life of part.
Further, by providing the throttle sheet 27, the flow area of the return flow hole 202 unique to the piston 20 can be adjusted as necessary, and the application range of the piston 20 is increased.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (7)
1. A recovery valve having a fully open valve plate, comprising: the piston is arranged in the cylinder barrel, the connecting rod is sleeved on the connecting rod, the supporting gasket is arranged on the upper portion of the piston, the circulation valve plate is arranged on the lower portion of the piston, the circulation valve plate can close a compression circulation hole formed in the piston, and the recovery valve plate can close a recovery circulation hole formed in the piston; the piston is characterized in that a guide piece is arranged on a connecting rod at the lower part of the piston, and a fastening nut is fixed at the bottom end of the connecting rod; one end of the guide piece is abutted against the lower part of the piston, and the other end of the guide piece is abutted against the fastening nut; the elastic body and the reset valve plate are sleeved outside the guide piece in a vertically movable manner, and two ends of the elastic body respectively abut against the fastening nut and the reset valve plate.
2. The restoring valve according to claim 1, wherein the guide member is a guide nut threadedly coupled to the connecting rod.
3. The recovery valve with the fully-opened valve plate as claimed in claim 1, wherein the guiding member is a guiding sliding sleeve sleeved on the connecting rod.
4. The restoring valve with the full-open valve plate according to claim 1, wherein a sliding gasket is arranged between the restoring valve plate and the elastic body, and the sliding gasket is movably sleeved outside the guide piece.
5. The restoring valve with the full-open valve plate according to claim 4, wherein the elastic body is a belleville spring, one end with a large caliber abuts against the sliding washer, and one end with a small caliber abuts against the fastening nut.
6. The restoring valve with a full-open valve plate according to claim 4, wherein the elastic body is a coil spring, the upper part of the elastic body abuts against the sliding washer, and the lower part of the elastic body abuts against the fastening nut.
7. The recovery valve with the fully opened valve plate as claimed in any one of claims 1 to 6, wherein a throttle plate is further disposed between the support washer and the piston, the throttle plate is sleeved on the connecting rod, and the outer diameter of the throttle plate is smaller than the outer diameter of the recovery flow hole of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220429271.5U CN202756527U (en) | 2012-08-27 | 2012-08-27 | Rebound valve with fully open valve plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220429271.5U CN202756527U (en) | 2012-08-27 | 2012-08-27 | Rebound valve with fully open valve plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756527U true CN202756527U (en) | 2013-02-27 |
Family
ID=47735711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220429271.5U Expired - Lifetime CN202756527U (en) | 2012-08-27 | 2012-08-27 | Rebound valve with fully open valve plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410446A (en) * | 2019-07-22 | 2019-11-05 | 成都九鼎科技(集团)有限公司 | A kind of FCD valve valve architecture |
| CN111911580A (en) * | 2020-08-21 | 2020-11-10 | 浙江永贵电器股份有限公司 | Piston unit of oil pressure shock absorber and assembling method thereof |
| CN115263975A (en) * | 2022-06-06 | 2022-11-01 | 天纳克(常州)减振系统有限公司 | Modular valve system for increasing compression force value of shock absorber |
-
2012
- 2012-08-27 CN CN201220429271.5U patent/CN202756527U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410446A (en) * | 2019-07-22 | 2019-11-05 | 成都九鼎科技(集团)有限公司 | A kind of FCD valve valve architecture |
| CN111911580A (en) * | 2020-08-21 | 2020-11-10 | 浙江永贵电器股份有限公司 | Piston unit of oil pressure shock absorber and assembling method thereof |
| CN115263975A (en) * | 2022-06-06 | 2022-11-01 | 天纳克(常州)减振系统有限公司 | Modular valve system for increasing compression force value of shock absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term |