CN203322140U - Shock absorber recovery damping valve - Google Patents

Shock absorber recovery damping valve Download PDF

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Publication number
CN203322140U
CN203322140U CN201320255767XU CN201320255767U CN203322140U CN 203322140 U CN203322140 U CN 203322140U CN 201320255767X U CN201320255767X U CN 201320255767XU CN 201320255767 U CN201320255767 U CN 201320255767U CN 203322140 U CN203322140 U CN 203322140U
Authority
CN
China
Prior art keywords
hollow bolt
valve
piston rod
communicated
valve pocket
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 - Fee Related
Application number
CN201320255767XU
Other languages
Chinese (zh)
Inventor
任启俊
徐霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanyang Cijan Auto Shock Absorber Co Ltd
Original Assignee
Nanyang Cijan Auto Shock Absorber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanyang Cijan Auto Shock Absorber Co Ltd filed Critical Nanyang Cijan Auto Shock Absorber Co Ltd
Priority to CN201320255767XU priority Critical patent/CN203322140U/en
Application granted granted Critical
Publication of CN203322140U publication Critical patent/CN203322140U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a shock absorber recovery damping valve. The shock absorber recovery damping valve is mainly characterized in that the lower end of a piston rod is connected with a recovery damping device through threads, wherein the recovery damping device is composed of a hollow bolt, a valve sleeve, a compression spring and a cap nut, the hollow bolt is sleeved with the compression spring and the valve sleeve in slide fit with the hollow bolt, the bottom of the hollow bolt is connected with the cap nut through threads, the lower portion of the piston rod is provided with an axial upper liquid flow channel communicated with a center hole of the hollow bolt and a radial upper liquid flow channel communicated with the axial upper liquid flow channel, and a liquid flow normal open hole is formed in the middle of the hollow bolt in the radial direction and communicated with the center hole of the hollow bolt. The shock absorber recovery damping valve can effectively play a role in damping, and improve comfort and stability of driving. Moreover, a damping valve plate is omitted from the structure, so that the defect of noise generated by stiction of the valve plate is avoided, the practical effect of being good in muting is achieved, meanwhile, a large amount of elastic valve plate materials can be saved, and production cost is reduced.

Description

A kind of absorber orifice valve
Technical field
The utility model belongs to the damper technique field, especially for a kind of absorber orifice valve in the automobile chassis suspension device.
Background technique
In existing technology, the hydraulic vibration damper restoration damp valve used, stacked equal diameter damper valve plate normally is installed on piston rod, and the compensation valve block is housed on piston end surface, the restoration damping valve of this structure, poor for the adaptability of extremely frigid zones, valve block viscous easily occurs in lower time period in temperature, produce noise, thereby reduced and taken advantage of travelling comfort and the stability of driving.Particularly in opening-closing process frequently, 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 arranged on the compensation valve block on piston end surface, because of supporting surface little, under the powerful impact of fluid, also easily produce deformation and fracture.Because the damage of valve block causes the inefficacy of vibration damper, therefore, the safety reliability of restoration damping valve is poor, and the scope that damping adapts to is also little.
The model utility content
The purpose of this utility model is the shortcoming and defect existed in order to overcome prior art, and provides a kind of extremely frigid zones environment that can adapt to use, and the absorber orifice valve that damping accommodation is large, damping good, safety reliability is strong.
Realize that the technological scheme that the purpose of this utility model is taked is, this restoration damping valve comprises piston rod, be sleeved on the limiting board on piston rod, circulation valve setting sheet, pad, flowing valve valve block and piston, the lower end of described piston rod has been threaded connection the recovery damping device, this device is by hollow bolt, valve pocket, Compress Spring and capping nut form, wherein, the valve pocket that is set with Compress Spring on hollow bolt and is slidably matched with hollow bolt, the bottom of hollow bolt has been threaded connection the capping nut, described underpart of the piston rod is provided with the axially upper liquid chunnel be communicated with the hollow bolt center hole and the liquid opening that makes progress the footpath be communicated with axially upper liquid chunnel, described hollow bolt middle part radially 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.
Be provided with seal ring between described valve pocket and hollow bolt.
Described capping nut is the groove type structure, and the 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 the iron-base powder metallurgy material goods.
The absorber orifice valve of making according to such scheme, setting by liquid chunnel and liquid opening, and under the acting in conjunction of Compress Spring and seal ring, produced the recovery resistance, can under wheel, jump low-speed stage, piston rod when driving this restoration damping valve and moving upward with respect to wheel, effectively bring into play damping function, reach the buffering automobile degree of jolting, improve the practical effect of automobile running travelling comfort and stability.And saved damper valve plate in structure, and overcome thus in the prior art and produced the drawback of noise because of valve block viscous, reach the practical effect that muting function is good, also saved the great number of elastic valve plate material simultaneously, reduced 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.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to Fig. 1, absorber orifice valve of the present utility model, there is piston rod 11, be set with successively limiting board 1 on piston rod 11, circulation valve setting sheet 9, pad 10, flowing valve valve block 2 and piston 3, the lower end of described piston rod 11 has been threaded connection the recovery damping device, this device is by hollow bolt 4, valve pocket 5, Compress Spring 7 and capping nut 8 form, wherein, the valve pocket 5 that is set with Compress Spring 7 on hollow bolt 4 and is slidably matched with hollow bolt 4, the bottom of hollow bolt 4 has been threaded connection capping nut 8, this nut 8 is the groove type structure, the 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 bottoms be provided with the axially upper liquid chunnel B that is communicated with hollow bolt 4 center holes and with the footpath of its channel connection liquid opening A that makes progress, the middle part of described hollow bolt 4 radially 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 described valve pocket 5 corresponding positions, upper-end surface, the circulation of fluid when descending for restoration damping valve.Described valve pocket 5 is provided with the groove be communicated with liquid stream normal open hole C, and be provided with seal ring 6 between valve pocket 5 and hollow bolt 4, the liquid stream normal open hole C that can radially offer hollow bolt 4 middle parts by sealing circle 6 plays airtight effect, 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, capping nut 8 and valve pocket 5 are the iron-base powder metallurgy material goods, but once-through in making can improve the precision of part, and cost is low.
Working principle of the present utility model: when the hop rate degree is slower under wheel, piston rod 11 is driving this restoration damping valve and is moving upward with respect to wheel, this restoration damping valve is started working, because flowing valve valve block 2 is blocked the normal open hole on piston 3, the fluid liquid opening A that makes progress through footpath flows into axially upper liquid chunnel B, when under wheel, the hop rate degree is low, fluid just flows out by the lower liquid opening D on capping nut 8, forms a fluid circulation cycle; When under wheel, the hop rate degree is slightly large, part fluid flows out by C and promotes valve pocket 5, airtight effect due to seal ring 6, fluid drives valve pocket 5 and applies compressive force to Compress Spring 7, make gap to occur between hollow bolt 4 and valve pocket 5 upper-end surfaces, because need to overcome the elastic force of Compress Spring 7, occur that the situation in gap is more difficult, so produced larger damping force; When under wheel, the hop rate degree is larger, Compress Spring 7 needs larger compressive force, and the difficulty that produces gap between hollow bolt 4 and valve pocket 5 upper-end surfaces is larger, thereby has produced larger damping force.

Claims (6)

1. an absorber orifice valve, it comprises piston rod, be sleeved on the limiting board on 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 has been threaded connection the recovery damping device, this device is by hollow bolt, valve pocket, Compress Spring and capping nut form, wherein, the valve pocket that is set with Compress Spring on hollow bolt and is slidably matched with hollow bolt, the bottom of hollow bolt has been threaded connection the capping nut, described underpart of the piston rod is provided with the axially upper liquid chunnel be communicated with the hollow bolt center hole and the liquid opening that makes progress the footpath be communicated with axially upper liquid chunnel, described hollow bolt middle part radially offers the liquid stream normal open hole be communicated with its central through bore.
2. according to absorber orifice valve claimed in 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 claimed in 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 claimed in 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 claimed in claim 1, it is characterized in that: described capping nut is the groove type structure, and the groove internal diameter is provided with the screw thread matched with hollow bolt, and the center portion of groove has lower liquid opening.
6. according to absorber orifice valve claimed in claim 1, it is characterized in that: described hollow bolt, nut and valve pocket are the iron-base powder metallurgy material goods.
CN201320255767XU 2013-05-13 2013-05-13 Shock absorber recovery damping valve Expired - Fee Related CN203322140U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320255767XU CN203322140U (en) 2013-05-13 2013-05-13 Shock absorber recovery damping valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320255767XU CN203322140U (en) 2013-05-13 2013-05-13 Shock absorber recovery damping valve

Publications (1)

Publication Number Publication Date
CN203322140U true CN203322140U (en) 2013-12-04

Family

ID=49661494

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320255767XU Expired - Fee Related CN203322140U (en) 2013-05-13 2013-05-13 Shock absorber recovery damping valve

Country Status (1)

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CN (1) CN203322140U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106015430A (en) * 2016-07-13 2016-10-12 湖北航天技术研究院特种车辆技术中心 Buffering device and hydro-pneumatic spring
CN107477133A (en) * 2017-10-18 2017-12-15 河南省汇隆精密设备制造股份有限公司 A kind of single-piston rod hydraulic damper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106015430A (en) * 2016-07-13 2016-10-12 湖北航天技术研究院特种车辆技术中心 Buffering device and hydro-pneumatic spring
CN107477133A (en) * 2017-10-18 2017-12-15 河南省汇隆精密设备制造股份有限公司 A kind of single-piston rod hydraulic damper

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131204

Termination date: 20150513

EXPY Termination of patent right or utility model