CN101571175A - Bottom valve split-type variable damping force hydraulic limit shock absorber - Google Patents
Bottom valve split-type variable damping force hydraulic limit shock absorber Download PDFInfo
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- CN101571175A CN101571175A CNA2009101482212A CN200910148221A CN101571175A CN 101571175 A CN101571175 A CN 101571175A CN A2009101482212 A CNA2009101482212 A CN A2009101482212A CN 200910148221 A CN200910148221 A CN 200910148221A CN 101571175 A CN101571175 A CN 101571175A
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Abstract
The invention relates to a bottom valve split-type variable damping force hydraulic limit shock absorber applicable to most automotive suspensions. A double-cylinder shock absorber is mainly characterized in that: a compression throttle orifice (10) is not arranged on a bottom valve (13) but on the side wall of an inner cylinder (7); and the shock absorber can obviously increase damping force within a certain range of the maximum compression stroke to have hydraulic limit effect. The double-cylinder shock absorber can be obtained by simply modifying an ordinary double-cylinder shock absorber so as to form a variable damping force shock absorber with positive hydraulic limit functions. The compression throttle orifice (10) is the only channel between a compression chamber and an oil-storage chamber in the small stroke vibrating state when compression resistance is small and a compression unloading valve (6) is not opened, and compression damping force varies as the throttling action of the compression throttle orifice changes. The compression throttle orifice (10) is blocked by a piston (12) in the large stroke vibrating state, and the compression damping force of the shock absorber suddenly increases to have the hydraulic limit effect.
Description
Technical field
The present invention relates to be used for the double barreled vibration damper on the automotive suspension, it is realized the damping characteristic that changes with stroke and realizes hydraulic stop by changing the bottom valve structure.
Background technique
The run distance caging device of being made by rubber (buffer stopper) usually is housed separately on the automotive suspension, and relevant parts such as vehicle body are subjected to too strong bump when preventing from significantly to vibrate.Thisly play the position-limiting action structure, an important shortcoming arranged by elasticity, be exactly it by compression the time stored energy can in ensuing recovery stroke, playback come out, and strengthened the kinetic energy of vibration.
At present, be widely used in the vibration damper on the automotive suspension, its resistance only depends on the up and down movement velocity at two ends usually, stroke finally the time vibration velocity very little, damping force is all very little, can not produce enough big position-limiting action.The bottom valve of common double barreled vibration damper all is made up of oiling valve, three parts of compression unloading valve and compression throttling duct.The damping size in compression throttling duct wherein is uncontrollable.
The present invention carries out for the problem that solves above-mentioned prior art existence.
Summary of the invention
The present invention realizes spacing purpose by the damping of unexpected increasing vibration damper.This by strengthen the damping restriction energy that stroke absorbed will by mechanical vibrational energy become can not inversion heat energy distribute in surrounding environment, thereby can alleviate vibration significantly.Patent of invention " the suspension system of lifting load-bearing impact damper " (publication number: CN101362424A) relevant that the present invention and claimant have applied for.This application for a patent for invention is at specific " lifting load-bearing impact damper ", and the present invention is applicable to all double barreled vibration dampers.
The present invention cancels the compression throttling duct in the bottom valve of common double barreled vibration damper, and moves on on the sidewall of inner cylinder tube.Piston can block the compression throttling duct when compression stroke is very big, and resistance to compression pression is increased suddenly, forms the compression position-limiting action.
Bottom valve split-type variable damping force hydraulic limit shock absorber of the present invention comprises that upper end-hole is by the inner cylinder tube of guider and sealing seat sealing and the bitubular oil cylinder with inside and outside cavity that outer cylinder is formed; Be arranged on bitubular oil cylinder inner chamber body piston and connect the piston rod of piston, wherein piston divides inner chamber body for recovery chamber on piston and the compression chamber below piston; Be arranged on the inner cylinder tube bottom, guarantee the bottom valve of the abundant oil-feed of compression chamber; Be arranged on and be communicated with compression chamber and the piston flowing valve that restores the chamber on the piston; Constituted outer chamber between described inner cylinder tube and outer cylinder, the top of outer chamber is that air cavity, bottom are shoe cream room; Be characterized in that described bottom valve is the common one-way valve in a no compression throttling hole, be arranged on the inner cylinder tube lower sides after its compression throttling hole is separated, promptly having the compression throttling hole that is communicated with outer chamber in the bitubular oil cylinder on the inner cylinder tube lower sides; When compression stroke was increased to the needs restriction, the compression throttling hole was blocked by piston, thereby resistance to compression pression increases the generation position-limiting action suddenly.The compression throttling hole of outer chamber in the connection bitubular oil cylinder of opening on the inner cylinder tube lower sides can be one or several, can be that circular hole also can be an elongated hole; Described compression throttling hole can be arranged on the different heights of described sidewall, when the compression throttling hole is elongated hole, makes the axial setting of its length direction along inner cylinder tube, in the movement process of piston, position-limiting action is increased gradually.
The inwall of inner cylinder tube also can have one or more spiral grooves, both lubricates, the resistance coefficient in the time of changing different loads again.
Also be provided with the isolation ring plate that floats between oil, aerosphere face in the outer chamber that between described inner cylinder tube and outer cylinder, constitutes, to alleviate the emulsification of fluid.
Description of drawings
Fig. 1 is the structure sectional view of bottom valve split-type variable damping force hydraulic limit shock absorber.
Embodiment
The embodiment who provides below in conjunction with accompanying drawing 1 describes in further detail structure of the present invention.
With reference to Fig. 1, a kind of load bearing type damping changing impact damper, comprise bitubular oil cylinder that upper end-hole is made up of the inner cylinder tube 7 of guider 4 and sealing seat 2 sealings and outer cylinder 5 with interior outer chamber, be arranged on the piston 12 of inner cylinder tube 7 inner chambers and is connected piston 12 piston rod 9, be arranged on bottom valve 13 that inner cylinder tube 7 bottoms are communicated with the unidirectional oil-feed of exocoel in the bitubular oil cylinder, compress unloading valve 6 and be arranged on the piston flow through hole 11 and the piston flowing valve 14 in connection recovery chamber 17 and compression chamber 18 on the piston 12; Described piston flowing valve 14 is one-way valves of band throttle orifice, and institute has determined the resistance coefficient of recovery stroke with the size of throttle orifice; Have one or several and be communicated with the compression throttling hole 10 of outer chamber in bitubular oil cylinders on described inner cylinder tube 7 lower sides, damping increases and rises and compress position-limiting action when they are stopped up by piston when compression stroke, to reduce the impact of road surface transmission.
On the inwall of described inner cylinder tube 7, also can be provided with one or several spiral grooves 15.Set spiral grooves had both played lubricated anti-attrition effect, the resistance coefficient in the time of changing different loads (suspension height difference) again.
Claims (8)
1. a bottom valve split-type variable damping force hydraulic limit shock absorber comprises that upper end-hole is by the inner cylinder tube (7) of guider (4) and sealing seat (2) sealing and the bitubular oil cylinder with inside and outside cavity that outer cylinder (5) is formed; Be arranged on the piston (12) of the inner chamber body of bitubular oil cylinder and the piston rod (9) of connection piston (12), wherein piston (12) divides inner chamber body for recovery chamber (17) on piston (12) and the compression chamber (18) below piston (12); Be arranged on inner cylinder tube (7) bottom, guarantee the fully bottom valve (13) of oil-feed of compression chamber (18); Be arranged on piston (12) and go up the piston flowing valve (14) that is communicated with compression chamber (18) and restores chamber (17); Described vibration damper is characterised in that: described bottom valve (13) is the common one-way valve in no compression throttling hole (10), described compression throttling hole (10) is discrete from bottom valve (13) comes out and is arranged on the lower sides of inner cylinder tube (7), and described compression throttling hole (10) is one or more; When compression stroke was enough big, described compression throttling hole (10) was blocked by piston (12), and the fluid in the compression chamber is in the state lower compression of sealing, thus the effect of generation hydraulic stop.
2. vibration damper according to claim 1 is characterized in that: also be provided with compression unloading valve (6) in described inner cylinder tube (7) bottom, and unlikely excessive to control spacing load.
3. vibration damper according to claim 1 is characterized in that: described piston flowing valve (14) is the one-way valve of band throttle orifice.
4. vibration damper according to claim 3 is characterized in that: also be provided with piston flow through hole (11) on described piston (12).
5. according to claim 1,2 or 3 described vibration dampers, it is characterized in that: the compression throttling hole (10) that is provided with on the sidewall of described inner cylinder tube (7) is for a plurality of, it is distributed on the different heights of inner cylinder tube (7) sidewall, when piston (12) is descending, block one by one, to reach the hydraulic stop effect of strengthening gradually.
6. according to claim 1,2 or 3 described vibration dampers, it is characterized in that: described compression throttling hole (10) is circular hole or elongated hole, and the length direction of elongated hole is axially identical with inner cylinder tube (7).
7. according to claim 1,2 or 3 described vibration dampers, it is characterized in that: also be provided with one or more spiral grooves (15) on the inwall of described inner cylinder tube (7).
8. vibration damper according to claim 1 is characterized in that: also be provided with the isolation ring plate that floats between oil, aerosphere face in the outer chamber that constitutes between described inner cylinder tube (7) and outer cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101482212A CN101571175A (en) | 2009-06-18 | 2009-06-18 | Bottom valve split-type variable damping force hydraulic limit shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101482212A CN101571175A (en) | 2009-06-18 | 2009-06-18 | Bottom valve split-type variable damping force hydraulic limit shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571175A true CN101571175A (en) | 2009-11-04 |
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ID=41230613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101482212A Pending CN101571175A (en) | 2009-06-18 | 2009-06-18 | Bottom valve split-type variable damping force hydraulic limit shock absorber |
Country Status (1)
| Country | Link |
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| CN (1) | CN101571175A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102725B (en) * | 2009-12-22 | 2014-06-18 | 上海金盾消防安全设备有限公司 | Liquid damping time delayer |
| CN104315064A (en) * | 2014-09-10 | 2015-01-28 | 张家港市宏盛贸易有限公司 | Shock absorber for textile machine |
| CN107740836A (en) * | 2017-11-22 | 2018-02-27 | 桂林电子科技大学 | Gas-liquid vibration absorber |
| CN109159635A (en) * | 2018-09-05 | 2019-01-08 | 湖南大学 | A kind of new automobile shock mitigation system and shock-dampening method |
| WO2019154316A1 (en) * | 2018-02-12 | 2019-08-15 | 郭怀宝 | Hydraulic shock absorbing piston with combined sleeve and hydraulic shock absorber |
| CN110525309A (en) * | 2019-09-18 | 2019-12-03 | 华北水利水电大学 | A kind of SCM Based conveying device |
| CN113431860A (en) * | 2021-07-02 | 2021-09-24 | 安徽誉林汽车部件有限公司 | Double-cylinder hydraulic shock absorber |
-
2009
- 2009-06-18 CN CNA2009101482212A patent/CN101571175A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102725B (en) * | 2009-12-22 | 2014-06-18 | 上海金盾消防安全设备有限公司 | Liquid damping time delayer |
| CN104315064A (en) * | 2014-09-10 | 2015-01-28 | 张家港市宏盛贸易有限公司 | Shock absorber for textile machine |
| CN107740836A (en) * | 2017-11-22 | 2018-02-27 | 桂林电子科技大学 | Gas-liquid vibration absorber |
| CN107740836B (en) * | 2017-11-22 | 2024-02-20 | 桂林电子科技大学 | Gas-liquid vibration damper |
| WO2019154316A1 (en) * | 2018-02-12 | 2019-08-15 | 郭怀宝 | Hydraulic shock absorbing piston with combined sleeve and hydraulic shock absorber |
| CN109159635A (en) * | 2018-09-05 | 2019-01-08 | 湖南大学 | A kind of new automobile shock mitigation system and shock-dampening method |
| CN110525309A (en) * | 2019-09-18 | 2019-12-03 | 华北水利水电大学 | A kind of SCM Based conveying device |
| CN113431860A (en) * | 2021-07-02 | 2021-09-24 | 安徽誉林汽车部件有限公司 | Double-cylinder hydraulic shock absorber |
| CN113431860B (en) * | 2021-07-02 | 2023-09-12 | 安徽誉林汽车部件有限公司 | Double-cylinder hydraulic shock absorber |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091104 |