CN201013823Y - Barrel type hydraulic shock absorber with floating piston - Google Patents
Barrel type hydraulic shock absorber with floating piston Download PDFInfo
- Publication number
- CN201013823Y CN201013823Y CNU2006201418557U CN200620141855U CN201013823Y CN 201013823 Y CN201013823 Y CN 201013823Y CN U2006201418557 U CNU2006201418557 U CN U2006201418557U CN 200620141855 U CN200620141855 U CN 200620141855U CN 201013823 Y CN201013823 Y CN 201013823Y
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- piston
- floating piston
- drum
- damper
- cylindrical shell
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Abstract
The utility model relates to a vehicle hydraulic damper to improve vehicle driving stability, in particular to an improved vehicle hydraulic damper with a floating piston and good damping performance, comprising a drum, a piston component inside the drum, damping oil, a piston rod on the piston, a valve body, a guide device on the upper end of the drum and an oil sealing. The utility model is characterized in that the bottom of the drum is provided with a floating piston device which is a cylindrical shape matching the shape of the bottom of the drum and comprises a cylindrical air reservoir, high-pressure gas inside the air reservoir, a floating piston above high-pressure gas, an O-shaped sealing ring embedded into a groove in the outer diameter of the floating piston and retaining rings being fastened between the floating piston and the upper edge of the air reservoir. The utility model overcomes floating lagging defect of the damping oil and, avoids vacuum inside the drum of the damper and eliminates empty trip hidden danger of the piston in the damper. Whether being arranged in a double-drum damper or a single-drum damper, the floating piston device has the advantages of convenient installation and maintenance and can improve damping performance of the damper.
Description
Technical field
The utility model relates to a kind of raising vehicle run stability, especially improves the utensil of vehicle occupant ' travelling comfort.Specifically, be a kind of damping performance that has floating piston good vehicle hydraulic vibration damper that has improved.
Background technique
At present, the vibration damper of automobile use all belongs to hydraulic damper basically.Vehicle is jolting when travelling, and the piston rod of hydraulic damper is constantly made fore and aft motion in cylinder body, and the damping oil in the cylinder body constantly by current downflow on the valve block in the valve body, comes shock absorbing power, extenuates degree of jolting.Because piston rod can make the cylinder body volume reduce when stretching in the cylinder body, so can not fill with damping oil fully in the cylinder body.Originally just can not fill with because of the damping oil in the cylinder body again, vibration damper in use also occurs factor such as leakage of oil inevitably and causes oily loss, and the damping oil in the cylinder body can be fewer and feweri.Like this, when vehicle jolts frequent and top width of cloth when big, hysteresis is filled up in the circulation of cylinder body internal damping oil, very easily occurs vacuum in the cylinder body, and the idle running phenomenon appears in piston in cylinder body.In addition, the oil gas mixing resultant makes damping oil emulsification in the cylinder body, and volume increases, and the piston original lower position of can not working again makes compression damping be increased to unallowable numerical value.And the abnormal sound that noise and vibration are sent can appear during by valve block in emulsification damping oil easily.Especially damping oil especially has some setbacks by valve block under low temperature condition, has a strong impact on damping effect.In recent years, the new technology that the cylinder body lower curtate is filled with pressurized gas appearred.Chinese patent, the patent No. is 200520102613.2, name is called the patented technology of " gas-filled type double-piston vibration damper ", " being provided with the gas piston in the cylinder barrel; gas piston and inner wall of cylinder form the compression air cavity ... " exactly, this technology claims, " because cavity of resorption is filled with the very high pressurized gas of air pressure, the vibration damper active chamber comprised remains sufficient fluid in oily piston rod chamber and the rodless cavity ... the traditional shock absorber structures shape product because the defective that the recovery resistance transition of inner shock-absorbing joint stream unit frequency of okperation hysteresis piston cylinder motion frequency generation is not sufficiently oily.This product structure has just in time remedied this deficiency ... thus prolonged vibration damper working life, and it is more comfortable that the people on the car also feels." but still there is defective in this technology: as, charge into difficulty of pressurized gas; The pressurized gas sealing is poor; The most serious is that installation and maintenance gas piston is very difficult.
Summary of the invention
The purpose of the utility model is to remedy above-mentioned deficiency, and it is good to disclose a kind of damping performance to society, and the pressurized gas in the gas piston be difficult for to leak, and installation and maintenance are very easily with the cylinder type hydraulic vibration damper of floating piston.
The technical solution of the utility model is achieved in that
A kind of cylinder type hydraulic vibration damper with floating piston comprises, the guider and the oil sealing of the piston rod on the piston assembly in cylindrical shell, the cylindrical shell, damping oil, the piston, valve body, cylindrical shell upper end; Its feature in, the bottom of cylindrical shell is equipped with float piston device.The described float piston device that is installed in the cylindrical shell bottom matches with the shape of cylindrical shell bottom cylindrically, it comprises, the annular retaining ring that fastens with the air reservoir upper edge on the O-ring seals in the pressurized gas in columniform air reservoir, the air reservoir, the floating piston above the pressurized gas, the embedding floating piston external diameter groove, the floating piston.
Pressurized gas in the described float piston device are nitrogen or inert gas.
O-ring seals in the described embedding floating piston external diameter groove is made by tetrafluoroethylene.
The utility model has the advantages that:
Because, float piston device has been installed, overcome damping oil and flowed and to fill up the hysteresis defective, avoid the vacuum phenomenon in the vibration damper cylindrical shell, eliminated piston idle running hidden danger in vibration damper;
Because, regulating action was played in the variation of cylindrical shell volume size when the pressurized gas compression and the shared spatial variations that expands just in time can be stretched to piston rod in the float piston device, this makes and is full of damping oil in the cylindrical shell and has become reality, thereby avoided the gas and oil mixing phenomena, overcome the damping oil emulsion deterioration, make damping oil mobile steady and smooth in cylindrical shell, improved the performance of vibration damper, prolonged the working life of vibration damper;
Because the float piston device design is tight, and independent air reservoir, good airproof performance are arranged, pressurized gas are difficult for leaking;
Whole float piston device integrity is strong, as long as fill in from the cylindrical shell bottom fill with damping oil in cylindrical shell after, bottom is installed is thereafter got final product during installation, also can take out in bottom integrated during maintenance, and very convenient, pressurized gas can be reused.
Description of drawings
Fig. 1 is the utility model example structure schematic representation (sectional view);
Fig. 2 is the utility model embodiment float piston device structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
The utility model embodiment (Fig. 1), a kind of cylinder type hydraulic vibration damper with floating piston, comprise the guider 3 and the oil sealing 2 of the piston rod 5 on the piston assembly 7 in cylindrical shell 4 (bitubular), the cylindrical shell, damping oil 1, the piston, valve body 6,7 (rebuilt valve 6, compression valve 7), cylindrical shell upper end; Its feature in, the bottom of cylindrical shell is equipped with float piston device.The described float piston device that is installed in the cylindrical shell bottom matches with the shape of cylindrical shell bottom cylindrically, it comprises, the annular retaining ring 9 that fastens with the air reservoir upper edge on the O-ring seals 10 in the pressurized gas 13 in columniform air reservoir 12, the air reservoir, the floating piston above the pressurized gas 11, the embedding floating piston external diameter groove, the floating piston.
Pressurized gas in the described float piston device are nitrogen.
O-ring seals in the described embedding floating piston external diameter groove is made by tetrafluoroethylene.
The utility model embodiment in use, when piston rod was downward, at the bottom of underpiston a part of damping oil will be forced through compression valve and is pressed into tin, floating piston had been vacateed the space for this part oil downwards, pressurized gas were compressed and produced rebounding force this moment; Underpiston another part damping oil will enter in the cylindrical shell on piston top by rebuilt valve, fills up the vacuum in the cylindrical shell of the downward back piston of piston rod top, because of damping oil does not have emulsifiedly, does not conform to bubble, and is more smooth and easy by rebuilt valve.When piston rod makes progress, floating piston is upwards floated rapidly by the pressurized gas effect, make the damping oil under the compression valve be subjected to floating piston to promote to pass through rapidly compression valve, fill up make progress vacuum in the cylindrical shell of back piston bottom of piston rod, a part of damping oil on piston top enters in the cylindrical shell below the piston by rebuilt valve simultaneously.Smooth and easy and positive role that floating piston is risen that therefrom damping oil is full all the time in the cylindrical shell as can be seen, damping oil flows.
No matter float piston device of the present utility model is installed in the bitubular or the single drum shock absorber, has equally installation and maintenance side Just, improve the advantage such as damper damping performance.
Claims (4)
1. the cylinder type hydraulic vibration damper with floating piston comprises, the guider (3) and the oil sealing (2) of the piston rod (5) on the piston assembly (7) in cylindrical shell (4), the cylindrical shell, damping oil (1), the piston, valve body (6,8), cylindrical shell upper end; It is characterized in that the bottom of cylindrical shell is equipped with float piston device.
2. the cylinder type hydraulic vibration damper of band floating piston as claimed in claim 1, it is characterized in that, the described float piston device that is installed in the cylindrical shell bottom matches with the shape of cylindrical shell bottom cylindrically, it comprises, the annular retaining ring (9) that fastens with the air reservoir upper edge on the O-ring seals (10) in the pressurized gas (13) in columniform air reservoir (12), the air reservoir, the floating piston above the pressurized gas (11), the embedding floating piston external diameter groove, the floating piston.
3. the cylinder type hydraulic vibration damper of band floating piston as claimed in claim 2 is characterized in that, the pressurized gas (13) in the described float piston device are nitrogen or inert gas.
4. the cylinder type hydraulic vibration damper of band floating piston as claimed in claim 2 is characterized in that, the O-ring seals (10) in the described embedding floating piston external diameter groove is made by tetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201418557U CN201013823Y (en) | 2006-12-31 | 2006-12-31 | Barrel type hydraulic shock absorber with floating piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201418557U CN201013823Y (en) | 2006-12-31 | 2006-12-31 | Barrel type hydraulic shock absorber with floating piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013823Y true CN201013823Y (en) | 2008-01-30 |
Family
ID=39025614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201418557U Expired - Fee Related CN201013823Y (en) | 2006-12-31 | 2006-12-31 | Barrel type hydraulic shock absorber with floating piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013823Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725662B (en) * | 2009-12-10 | 2012-02-29 | 华中科技大学 | Shock absorber for vacuum environment |
| CN103016606A (en) * | 2012-12-18 | 2013-04-03 | 重庆渝安创新科技有限公司 | Upside-down shock absorber |
| CN103542033A (en) * | 2013-11-04 | 2014-01-29 | 四川川南减震器集团有限公司 | Single drum shock absorber |
| CN104074914A (en) * | 2013-03-29 | 2014-10-01 | 株式会社昭和 | Pressure shock absorbing apparatus |
| CN107489723A (en) * | 2017-08-24 | 2017-12-19 | 宁波力减震器有限公司 | damper with floating piston |
| CN107850164A (en) * | 2015-07-14 | 2018-03-27 | Ｋｙｂ株式会社 | Single-barrel shock absorber |
-
2006
- 2006-12-31 CN CNU2006201418557U patent/CN201013823Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725662B (en) * | 2009-12-10 | 2012-02-29 | 华中科技大学 | Shock absorber for vacuum environment |
| CN103016606A (en) * | 2012-12-18 | 2013-04-03 | 重庆渝安创新科技有限公司 | Upside-down shock absorber |
| CN103016606B (en) * | 2012-12-18 | 2015-07-01 | 重庆渝安创新科技有限公司 | Upside-down shock absorber |
| CN104074914A (en) * | 2013-03-29 | 2014-10-01 | 株式会社昭和 | Pressure shock absorbing apparatus |
| CN104074914B (en) * | 2013-03-29 | 2017-07-21 | 株式会社昭和 | Pressure shock-absorbing device |
| CN103542033A (en) * | 2013-11-04 | 2014-01-29 | 四川川南减震器集团有限公司 | Single drum shock absorber |
| CN107850164A (en) * | 2015-07-14 | 2018-03-27 | Ｋｙｂ株式会社 | Single-barrel shock absorber |
| CN107489723A (en) * | 2017-08-24 | 2017-12-19 | 宁波力减震器有限公司 | damper with floating piston |
| CN107489723B (en) * | 2017-08-24 | 2019-05-21 | 宁波一力减震器有限公司 | Damper with floating piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO BOYA DAMPER MANUFACTURING CO., LTD.; PATEN Free format text: FORMER OWNER: NINGBO BOYA DAMPER MANUFACTURING CO., LTD. Effective date: 20081017 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081017 Address after: Ningbo, Zhejiang province Yinzhou District Bell Temple three miles Ningbo Boya shock absorber manufacturing Co., Ltd., zip code: 315194 Co-patentee after: Ningbo Nanfang Shock Absorber Manufacture Co., Ltd. Patentee after: Ningbo Boya shock absorber manufacturing Co., Ltd. Address before: Ningbo, Zhejiang province Yinzhou District Bell Temple three miles Ningbo Boya shock absorber manufacturing Co., Ltd., zip code: 315194 Patentee before: Ningbo Boya Shock Absorber Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |