CN103225665A - Recovery damping valve for shock absorber - Google Patents
Recovery damping valve for shock absorber Download PDFInfo
- Publication number
- CN103225665A CN103225665A CN2013101736041A CN201310173604A CN103225665A CN 103225665 A CN103225665 A CN 103225665A CN 2013101736041 A CN2013101736041 A CN 2013101736041A CN 201310173604 A CN201310173604 A CN 201310173604A CN 103225665 A CN103225665 A CN 103225665A
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- hollow bolt
- valve
- communicated
- piston rod
- vibration damper
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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 the damper technique field, restore orifice valve especially for a kind of vibration damper in the automobile chassis suspension device.
Background technique
In existing technology, the dydraulic shock absorber that uses restores orifice valve, stacked equal diameter damper valve plate normally is installed on piston rod, and the compensation valve block is housed on piston end surface, the recovery orifice valve of this structure, relatively poor for the adaptability of extremely frigid zones, valve block viscous takes place in the lower time period easily in temperature, produce noise, thereby reduced and taken advantage of the travelling comfort and the stability of driving.Particularly in frequent opening-closing process, the brute force of high pressure liquid stream is impacted and is made damper valve plate produce stress to concentrate and cause its fracture or excessive deformation, and is installed in the compensation valve block on the piston end surface, because of supporting surface little, under the powerful impact of fluid, also be easy to generate distortion and fracture.Owing to the damage of valve block causes the inefficacy of vibration damper, therefore, the safety reliability of restoring orifice valve is poor, and the scope that damping adapts to is also little.
Summary of the invention
The objective of the invention is is in order to overcome the shortcoming and defect that prior art exists, and provides a kind of extremely frigid zones environment that can adapt to use, and the vibration damper that damping accommodation is big, damping good, safety reliability is strong restores orifice valve.
Realize that the technological scheme that purpose of the present invention is taked is, this recovery orifice valve comprises piston rod, be sleeved on the limiting board on the piston rod, circulation valve setting sheet, pad, flowing valve valve block and piston, the lower end of described piston rod is by the recovery damping device that has been threaded, this device is by hollow bolt, valve pocket, pressure spring and capping nut are formed, wherein, the valve pocket that is set with pressure spring on the hollow bolt and is slidingly matched with hollow bolt, the bottom of hollow bolt is by the capping nut that has been threaded, described underpart of the piston rod is provided with the axial upward liquid chunnel that is communicated with the hollow bolt center hole and the liquid opening that makes progress the footpath that is communicated with axial upward liquid chunnel, and described hollow bolt middle part radially offers the liquid that is communicated with its central through bore and flows the normal open hole.
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 that is communicated with liquid stream normal open hole.
Be provided with seal ring between described valve pocket and the hollow bolt.
Described capping nut is the groove shaped structure, and the groove internal diameter is provided with the screw thread that matches with hollow bolt, and the center portion of groove has down the liquid opening.
Described hollow bolt, nut and valve pocket are the iron-base powder metallurgy material goods.
The vibration damper of making according to such scheme restores orifice valve, setting by liquid chunnel and liquid opening, and under the acting in conjunction of pressure spring and seal ring, produced the recovery resistance, can under wheel, jump low-speed stage, piston rod when driving this recovery orifice valve and moving upward with respect to wheel, bring into play damping function effectively, reach the buffering automobile degree of jolting, improve the practical effect of automobile running travelling comfort and stability.And in structure, saved damper valve plate, and overcome the drawback that produces noise in the prior art because of valve block viscous thus, reach quiet effective practical effect, also saved the great number of elastic valve plate material simultaneously, reduced cost of production.Compared with prior art, this recovery orifice valve has reasonable in design, and reliable performance is easy to assembly, advantages such as Applicable scope is big, damping good, long service life.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to Fig. 1, vibration damper of the present invention restores orifice valve, has piston rod 11, on piston rod 11, be set with limiting board 1 successively, circulation valve setting sheet 9, pad 10, flowing valve valve block 2 and piston 3, the lower end of described piston rod 11 is by the recovery damping device that has been threaded, this device is by hollow bolt 4, valve pocket 5, pressure spring 7 and capping nut 8 are formed, wherein, the valve pocket 5 that is set with pressure spring 7 on the hollow bolt 4 and is slidingly matched with hollow bolt 4, the bottom of hollow bolt 4 is by the capping nut 8 that has been threaded, this nut 8 is the groove shaped structure, the groove internal diameter is provided with the screw thread that matches with hollow bolt 4, and the center portion of groove has down liquid opening D.Described piston rod 11 bottoms be provided be communicated with hollow bolt 4 center holes axially go up liquid chunnel B and with the footpath of its channel connection liquid opening A that makes progress, described hollow bolt 4 middle parts radially offer the liquid stream normal open hole C that is 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 surfaces, is used to restore the circulation of orifice valve fluid when descending.Described valve pocket 5 is provided with the groove that is communicated with liquid stream normal open hole C, and between valve pocket 5 and hollow bolt 4, be provided with seal ring 6, can play airtight effect to the liquid stream normal open hole C that hollow bolt 4 middle parts are radially offered by sealing circle 6, it can prevent the leakage of vibration damper at 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 the iron-base powder metallurgy material goods, but once-through in the making can improve part precision, and cost is low.
Working principle of the present invention: when hop rate degree under the wheel is slow, piston rod 11 is driving this recovery orifice valve and is moving upward with respect to wheel, this recovery orifice valve is started working, because flowing valve valve block 2 is blocked the normal open hole on the piston 3, fluid flows into through the liquid opening A that directly makes progress and axially goes up liquid chunnel B, when the hop rate degree was low under the wheel, fluid just flowed out by the following liquid opening D on the capping nut 8, forms a fluid circulation cycle; When the hop rate degree is big slightly under the wheel, part fluid flows out by C and promotion valve pocket 5, because the airtight effect of seal ring 6, fluid drives valve pocket 5 and applies compressive force for pressure spring 7, make between hollow bolt 4 and valve pocket 5 upper-end surfaces and the gap occurs, because need overcome the elastic force of pressure spring 7, the situation that the gap occurs is difficult, so produced bigger damping force; When the hop rate degree was bigger under the wheel, pressure spring 7 needed bigger compressive force, and the difficulty that produces the gap between hollow bolt 4 and valve pocket 5 upper-end surfaces is bigger, thereby has produced bigger damping force.
Claims (6)
1. a vibration damper restores orifice valve, it comprises piston rod, be sleeved on the limiting board on the piston rod, circulation valve setting sheet, pad, flowing valve valve block and piston, it is characterized in that: the lower end of described piston rod is by the recovery damping device that has been threaded, this device is by hollow bolt, valve pocket, pressure spring and capping nut are formed, wherein, the valve pocket that is set with pressure spring on the hollow bolt and is slidingly matched with hollow bolt, the bottom of hollow bolt is by the capping nut that has been threaded, described underpart of the piston rod is provided with the axial upward liquid chunnel that is communicated with the hollow bolt center hole and the liquid opening that makes progress the footpath that is communicated with axial upward liquid chunnel, and described hollow bolt middle part radially offers the liquid that is communicated with its central through bore and flows the normal open hole.
2. restore orifice valve according to the described vibration damper of 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. restore orifice valve according to the described vibration damper of claim 1, it is characterized in that: described valve pocket is provided with the groove that is communicated with liquid stream normal open hole.
4. restore orifice valve according to the described vibration damper of claim 1, it is characterized in that: be provided with seal ring between described valve pocket and the hollow bolt.
5. restore orifice valve according to the described vibration damper of claim 1, it is characterized in that: described capping nut is the groove shaped structure, and the groove internal diameter is provided with the screw thread that matches with hollow bolt, and the center portion of groove has down the liquid opening.
6. restore orifice valve according to the described vibration damper of claim 1, it is characterized in that: described hollow bolt, nut and valve pocket are the 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 true CN103225665A (en) | 2013-07-31 |
| CN103225665B 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 |
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| CN (1) | CN103225665B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288109A (en) * | 2020-03-25 | 2020-06-16 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288109A (en) * | 2020-03-25 | 2020-06-16 | 东风小康汽车有限公司重庆分公司 | Damping piston assembly |
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| Publication number | Publication date |
|---|---|
| CN103225665B (en) | 2015-04-15 |
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