CN103225665B - Recovery damping valve for shock absorber - Google Patents
Recovery damping valve for shock absorber Download PDFInfo
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- CN103225665B CN103225665B CN201310173604.1A CN201310173604A CN103225665B CN 103225665 B CN103225665 B CN 103225665B CN 201310173604 A CN201310173604 A CN 201310173604A CN 103225665 B CN103225665 B CN 103225665B
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- hollow bolt
- valve
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- piston rod
- valve pocket
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Abstract
The invention relates to a recovery damping valve for a shock absorber. The recovery damping valve is mainly characterized in that the lower end of a piston rod is in threaded connection with a recovery damping device which consists of a hollow bolt, a valve sleeve, a compression spring and a capped nut, wherein the compression spring and the valve sleeve which is matched with the hollow bolt in a sliding way are sleeved on the hollow bolt; the bottom of the hollow bolt is in threaded connection with the capped nut; an axial upper liquid flow channel which is communicated with the center hole of the hollow bolt and a radial upper liquid flow through hole which is communicated with the axial upper liquid flow channel are formed on the lower part of the piston rod; and a liquid flow normally through hole which is communicated with the center through hole is formed in the radial direction of the middle part of the hollow bolt. By the recovery damping valve, a damping effect can be played very well; and the comfort degree and the stability of driving and riding are improved. Moreover, a damping valve plate is omitted, so that the defect of noises caused by stiction of the valve plate is avoided; a practical effect of good silencing effect is achieved, and a large number of elastic valve plate materials can also be saved; and the production cost is reduced.
Description
Technical field
The invention belongs to absorber technical field, especially for a kind of absorber orifice valve in automobile chassis suspension device.
Background technique
In existing technology, the hydraulic vibration damper restoration damp valve used, stacked equal diameter damper valve plate is normally installed on the piston rod, and compensation valve block is housed on piston end surface, the restoration damping valve of this structure, the adaptability for extremely frigid zones is poor, within the time period that temperature is lower, easily valve block viscous occurs, produce noise, thus reduce the travelling comfort and stability taking advantage of and drive.Particularly in opening-closing process frequently, the brute force attack of high pressure liquid stream makes damper valve plate generation stress concentrate and cause its fracture or excessive deformation, and is arranged on the compensation valve block on piston end surface, because supporting surface is little, under fluid brute force attack, also easily produce deformation and fracture.Cause the inefficacy of vibration damper due to the damage of valve block, therefore, the safety reliability of restoration damping valve is poor, and the scope that damping adapts to is also little.
Summary of the invention
The object of the invention is to be the shortcoming and defect existed to overcome prior art, and provide one can adapt to the use of extremely frigid zones environment, and the absorber orifice valve that damping accommodation is large, damping good, safety reliability is strong.
Realizing the technological scheme that object of the present invention takes is, this restoration damping valve comprises piston rod, suit limiting board on the piston rod, flowing valve tab (s), pad, flowing valve valve block and piston, the lower end of described piston rod has been threaded connection recovery damping device, this device is by hollow bolt, valve pocket, Compress Spring and acorn nut composition, wherein, valve pocket hollow bolt being set with Compress Spring and being slidably matched with hollow bolt, the bottom of hollow bolt has been threaded connection acorn nut, described underpart of the piston rod is provided with the axially liquid chunnel that is communicated with hollow bolt center hole and liquid opening in the radial direction that is communicated with axially liquid chunnel, in the middle part of described hollow bolt, radial direction offers the liquid stream normal open hole be communicated with its central through bore.
Described liquid stream normal open hole is arranged on and corresponding position, described valve pocket upper-end surface.
Described valve pocket is provided with the groove be communicated with liquid stream normal open hole.
Seal ring is provided with between described valve pocket and hollow bolt.
Described acorn nut is groove type structure, and groove internal diameter is provided with the screw thread matched with hollow bolt, and the center portion of groove has lower liquid opening.
Described hollow bolt, nut and valve pocket are iron-base powder metallurgy material goods.
The absorber orifice valve made according to such scheme, by the setting of liquid chunnel and liquid opening, and under the acting in conjunction of Compress Spring and seal ring, create recovery resistance, low-speed stage can be jumped under wheel, piston rod drives when this restoration damping valve moves upward relative to wheel, effectively play damping function, reach buffering automobile and to jolt degree, improve the practical effect of automobile running travelling comfort and stability.And eliminate damper valve plate in the structure, overcome the drawback producing noise in prior art because of valve block viscous thus, reach the practical effect that muting function is good, also save great number of elastic valve plate material simultaneously, reduce cost of production.Compared with prior art, this restoration damping valve has reasonable in design, and reliable performance is easy to assembly, the advantages such as Applicable scope is large, damping good, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Referring to Fig. 1, absorber orifice valve of the present invention, there is piston rod 11, piston rod 11 is set with limiting board 1 successively, flowing valve tab (s) 9, pad 10, flowing valve valve block 2 and piston 3, the lower end of described piston rod 11 has been threaded connection recovery damping device, this device is by hollow bolt 4, valve pocket 5, Compress Spring 7 and acorn nut 8 form, wherein, the valve pocket 5 hollow bolt 4 being set with Compress Spring 7 and being slidably matched with hollow bolt 4, the bottom of hollow bolt 4 has been threaded connection acorn nut 8, this nut 8 is groove type structure, groove internal diameter is provided with the screw thread matched with hollow bolt 4, the center portion of groove has lower liquid opening D.Described piston rod 11 bottom be provided with the axially liquid chunnel B that is communicated with hollow bolt 4 center hole and with liquid opening A in the radial direction of its channel connection, in the middle part of described hollow bolt 4, radial direction offers the liquid stream normal open hole C be communicated with its central through bore, this liquid stream normal open hole C is arranged on and corresponding position, described valve pocket 5 upper-end surface, the circulation of fluid time descending for restoration damping valve.Described valve pocket 5 is provided with the groove be communicated with liquid stream normal open hole C, and seal ring 6 is provided with between valve pocket 5 and hollow bolt 4, airtight effect can be played to the liquid stream normal open hole C offered radial in the middle part of hollow bolt 4 by sealing circle 6, it can prevent vibration damper in the leakage of low-speed stage fluid, makes the stability of low-speed stage damping force, conformity better.Described hollow bolt 4, nut 8 and valve pocket 5 are iron-base powder metallurgy material goods, can once-through in making, can improve the precision of part, and cost are low.
Working principle of the present invention: when hop rate degree is slower under wheel, piston rod 11 drives this restoration damping valve to move upward relative to wheel, this restoration damping valve is started working, because flowing valve valve block 2 blocks the normal open hole on piston 3, fluid liquid opening A in radial direction flows into axially liquid chunnel B, when under wheel, hop rate degree is low, fluid is just flowed out by the lower liquid opening D on acorn nut 8, forms a fluid circulation cycle; When under wheel, hop rate degree is slightly large, part fluid is flowed out by C and promotes valve pocket 5, due to the airtight effect of seal ring 6, fluid drives valve pocket 5 to apply compressive force to Compress Spring 7, make to occur gap between hollow bolt 4 and valve pocket 5 upper-end surface, because need the elastic force overcoming Compress Spring 7, occur that the situation in gap is more difficult, to produce larger damping force; When under wheel, hop rate degree is larger, Compress Spring 7 needs larger compressive force, and the difficulty producing gap between hollow bolt 4 and valve pocket 5 upper-end surface is larger, thus creates larger damping force.
Claims (6)
1. an absorber orifice valve, it comprises piston rod, suit limiting board on the piston rod, flowing valve tab (s), pad, flowing valve valve block and piston, it is characterized in that: the lower end of described piston rod has been threaded connection recovery damping device, this device is by hollow bolt, valve pocket, Compress Spring and acorn nut composition, wherein, valve pocket hollow bolt being set with Compress Spring and being slidably matched with hollow bolt, the bottom of hollow bolt has been threaded connection acorn nut, described underpart of the piston rod is provided with the axially liquid chunnel that is communicated with hollow bolt center hole and liquid opening in the radial direction that is communicated with axially liquid chunnel, in the middle part of described hollow bolt, radial direction offers the liquid stream normal open hole be communicated with its central through bore.
2. according to absorber orifice valve according to claim 1, it is characterized in that: described liquid stream normal open hole is arranged on and corresponding position, described valve pocket upper-end surface.
3. according to absorber orifice valve according to claim 1, it is characterized in that: described valve pocket is provided with the groove be communicated with liquid stream normal open hole.
4. according to absorber orifice valve according to claim 1, it is characterized in that: between described valve pocket and hollow bolt, be provided with seal ring.
5. according to absorber orifice valve according to claim 1, it is characterized in that: described acorn nut is groove type structure, and groove internal diameter is provided with the screw thread matched with hollow bolt, the center portion of groove has lower liquid opening.
6. according to absorber orifice valve according to claim 1, it is characterized in that: described hollow bolt, nut and valve pocket are iron-base powder metallurgy material goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173604.1A CN103225665B (en) | 2013-05-13 | 2013-05-13 | Recovery damping valve for shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173604.1A CN103225665B (en) | 2013-05-13 | 2013-05-13 | Recovery damping valve for shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103225665A CN103225665A (en) | 2013-07-31 |
| CN103225665B true CN103225665B (en) | 2015-04-15 |
Family
ID=48836235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310173604.1A Active CN103225665B (en) | 2013-05-13 | 2013-05-13 | Recovery damping valve for shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103225665B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288109B (en) * | 2020-03-25 | 2021-11-09 | 东风小康汽车有限公司重庆分公司 | Damping piston assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392810A (en) * | 2008-11-05 | 2009-03-25 | 北京理工大学 | External adjustable damper valve of oil gas suspension |
| CN101871502A (en) * | 2010-06-22 | 2010-10-27 | 北京理工大学 | External mechanical induction type adjustable damping valve of oil-gas suspension |
| EP2444688A1 (en) * | 2010-10-22 | 2012-04-25 | Öhlins Racing Ab | Valve arrangement |
-
2013
- 2013-05-13 CN CN201310173604.1A patent/CN103225665B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392810A (en) * | 2008-11-05 | 2009-03-25 | 北京理工大学 | External adjustable damper valve of oil gas suspension |
| CN101871502A (en) * | 2010-06-22 | 2010-10-27 | 北京理工大学 | External mechanical induction type adjustable damping valve of oil-gas suspension |
| EP2444688A1 (en) * | 2010-10-22 | 2012-04-25 | Öhlins Racing Ab | Valve arrangement |
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| Publication number | Publication date |
|---|---|
| CN103225665A (en) | 2013-07-31 |
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