CN104154168A - Micro soundproof energy accumulator used for damper - Google Patents
Micro soundproof energy accumulator used for damper Download PDFInfo
- Publication number
- CN104154168A CN104154168A CN201410385362.7A CN201410385362A CN104154168A CN 104154168 A CN104154168 A CN 104154168A CN 201410385362 A CN201410385362 A CN 201410385362A CN 104154168 A CN104154168 A CN 104154168A
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- floating piston
- filling valve
- clutch release
- liquid
- release slave
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Abstract
The invention discloses a micro soundproof energy accumulator used for a damper. A floating piston is embedded in a work cylinder to isolate damping oil from inert gas, so that an oil cylinder and an air cylinder are formed and are independent of each other; a quick coupling is connected with an upper sealing end cap of a cylinder barrel and is connected with a rodless cavity of the damper, a prefill valve is fixedly installed in the work cylinder and forms a hydraulic energy accumulator with the floating piston, and oil in the rodless cavity of the damper is complemented and absorbed in time; a self-sealing inflating connector is connected with the inside of a lower sealing end cap of the cylinder barrel and can inflate a gas chamber with the inert gas. The micro soundproof energy accumulator overcomes the defect that flowing complementing of the damping oil is delayed, the situation that air bubbles occur in the work cylinder of the damper is avoided, and noise is lowered; the hydraulic energy accumulator is formed, impact is relieved, overall stability and reliability of the damper are improved and the service life of the damper is prolonged.
Description
Technical field
The present invention relates to a kind of accumulator for vibration damper, in particular for the miniature noise elimination accumulator of vibration damper, be applicable to automobile absorber system, belong to fluid control technology field.
Background technique
At present, the vibration damper that automobile uses all belongs to hydraulic damper substantially; Vehicle is jolting while travelling, the piston rod of hydraulic damper is constantly made fore and aft motion in cylinder body, and the damping oil in cylinder body constantly, by current downflow on the valve block in valve body, cushions the impact force of bringing because of light weight, to extenuate degree of jolting, improve the travelling comfort of vehicle ride.Because stretching into while stretching out cylinder body, the piston rod of hydraulic damper can make oil cylinder volume change, when vehicle jolts frequent and top width when larger, hysteresis is filled up in the circulation of cylinder body internal damping oil, very easily occurs vacuum in cylinder body, there is idle running phenomenon in piston, have a strong impact on damping effect in cylinder body.
In recent years, also there is being filled with for hydraulic damper cylinder body lower curtate the new technology of pressurized gas.Be 200620141855.7 through the retrieval direction Chinese patent patent No., the patented technology of " with the barrel type hydraulic shock absorber of floating piston " by name is disclosed, by the bottom at cylindrical shell, float piston device is installed, substantially solved the problems referred to above, but still existent defect of this technology: as it is more difficult to be filled with pressurized gas; Floating piston moving range is large, serious wear; Without accumulator, floating piston is affected by Strong Impact Loading, and working life is low.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, and a kind of miniature noise elimination accumulator for vibration damper is provided, and has that damping performance is good, reliability is strong, noise is low, installation and maintenance feature very easily.
In order to solve above technical problem, the invention provides a kind of miniature noise elimination accumulator for vibration damper, comprise clutch release slave cylinder and the fixing seal upper-lower seal end cap at described clutch release slave cylinder two ends, on end cover, be provided with the rapid pipe joint communicating with vibration damper rodless cavity on described, described lower seal end cap is provided with self sealing gas-charging connection, self sealing gas-charging connection is inflated cylinder, after inert gas is full of, the pressurize voluntarily of self-sealed pneumatic head, sealing, prevented the leakage of high-pressure inert gas; In the cavity of described clutch release slave cylinder, be provided with by seal ring and be entrenched in the floating piston on clutch release slave cylinder inwall, on the clutch release slave cylinder between described upper end end-blocking lid and described floating piston, be installed with liquid-filling valve, the operative end surface of described liquid-filling valve and floating piston is all perpendicular to the central axis of described clutch release slave cylinder; Between described floating piston and upper end cover, be filled with damping oil, between described floating piston and lower sealing cover, be filled with inert gas or nitrogen; Described liquid-filling valve is arranged in the damping oil between described floating piston and upper end cover, and described liquid-filling valve center is provided with oil through, and the upper and lower two end faces of described floating piston is respectively equipped with groove, and one end is that discoid groove contacts with high-pressure inert gas; The other end is that the discoid groove of stepped shaft contacts with damping oil, and the groove at two ends makes floating piston middle part form energy-absorbing thin-walled.
The technological scheme that the present invention further limits is: the aforesaid miniature noise elimination accumulator for vibration damper, the end face that described floating piston contacts with damping oil is provided with and is circular boss, on described boss, have two sulculuses, two sulculuses are on same straight line, under thump, the bubble that damping oil produces is in sulculus flows into cylinder; Annular groove together with floating piston at least has with clutch release slave cylinder contact side, the seal ring that is full of groove is installed in described groove, internal diameter of the seal ring is slightly less than floating piston side annular groove external diameter, seal ring external diameter is slightly larger than the inner diameter of clutch release slave cylinder, realizes to greatest extent the sealing that separates of gas and liquid.
The aforesaid miniature noise elimination accumulator for vibration damper, described clutch release slave cylinder and lower seal end cap are welded to connect, and described lower seal end cap end face has the tapped hole that self sealing gas-charging connection is installed, and described tapped hole central axis and clutch release slave cylinder central axis coincide.
Further, the aforesaid miniature noise elimination accumulator for vibration damper, the Ce center that approaches of described liquid-filling valve and described upper end cover is provided with cylinder shape groove, described cylinder shape groove surrounding is annular boss, described oil through is made up of four through holes that are arranged on place of described cylinder shape groove bottom centre, the top of described four through holes is provided with shell fragment on liquid-filling valve, the base portion of described four through holes is provided with reed group under liquid-filling valve, on described liquid-filling valve, under shell fragment and liquid-filling valve, reed group is all fixed on the main valve body of liquid-filling valve by rivet, between described liquid-filling valve and clutch release slave cylinder surface of contact, be provided with seal ring.
The invention has the beneficial effects as follows:
1, the present invention separates high-pressure inert gas with floating piston with damping fluid, what ensured under damping fluid operating mode in office all in pressured state, thereby ensured vibration damper under any state all without idle running phenomenon, avoid the vacuum phenomenon in vibration damper cylindrical shell, prevent the emulsification of oil product, thereby reduced the generation of bubble noise.
2, floating piston of the present invention is simple in structure, and modern design is convenient to processing, absorbs mitigation impulsive load because floating piston middle part thin-walled can produce distortion, and the stability of whole vibration damper is improved, and reliability strengthens.
3, floating piston of the present invention contacts end face with damping oil and is provided with boss, be circular, on boss, have two sulculuses, two sulculuses are on same straight line, and under thump, the gas that damping oil produces is in sulculus flows into cylinder, effectively absorb the bubble that fluid produces, ensure the quality of damping oil, further reduced noise, improved working life.
4, the present invention is connected on cylinder barrel in end cover with rapid pipe joint, contact with vibration damper rodless cavity, liquid-filling valve is fixedly mounted in clutch release slave cylinder and forms a hydraulic accumulator with floating piston, arrange like this and can absorb in time, supplement vibration damper rodless cavity fluid, improve the system stationarity of vibration damper, contribute to the cooling of fluid simultaneously, thereby improved overall performance and the working life of vibration damper.
5, liquid-filling valve of the present invention is fixedly mounted in clutch release slave cylinder and forms a hydraulic accumulator with floating piston, avoid floating piston directly to contact with vibration damper rodless cavity, relax the impact of fluid to floating piston, reduce the stroke of floating piston, thereby reduce the wearing and tearing of floating piston, extended working life.
6, lower sealing cover of the present invention is provided with self sealing gas-charging connection, has facilitated cylinder is inflated, and after inert gas is full of, the pressurize voluntarily of self-sealed pneumatic head, sealing, prevented the leakage of high-pressure inert gas.The setting of pneumatic head has been convenient to the air pressure in vibration damper cylinder to regulate, and makes the performance of vibration damper reach optimum.
Miniature noise elimination accumulator for vibration damper described in the invention, have rational in infrastructure simple, novel in design, easy to adjust, noise is low, the feature that reliability is strong, is a kind of desirable miniature noise elimination accumulator for vibration damper at damping overall performance and the working life of having improved greatly vibration damper.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of floating piston of the present invention.
Fig. 3 is the structural representation of liquid-filling valve of the present invention.
Wherein: 1, clutch release slave cylinder; 2, liquid-filling valve; 3, damping oil; 4, floating piston; 5, seal ring; 6, nitrogen; 7, lower seal end cap; 8, self sealing gas-charging connection; 9, upper end cover; 10, rapid pipe joint.
Embodiment
embodiment 1
A kind of miniature noise elimination accumulator for vibration damper that the present embodiment provides, structure as shown in Figure 1 to Figure 3, comprise clutch release slave cylinder 1 and the fixing seal upper-lower seal end cap at clutch release slave cylinder two ends, on upper end cover 9, be provided with the rapid pipe joint 10 communicating with vibration damper rodless cavity, lower seal end cap 7 is provided with self sealing gas-charging connection 8, in the cavity of clutch release slave cylinder, be provided with by seal ring and be entrenched in the floating piston 4 on clutch release slave cylinder inwall, on the clutch release slave cylinder between upper end cover 9 and floating piston 4, be installed with liquid-filling valve 2, the operative end surface of liquid-filling valve 2 and floating piston 4 is all perpendicular to the central axis of clutch release slave cylinder, between floating piston and upper end cover, be filled with damping oil 3, between floating piston and lower sealing cover, be filled with nitrogen 6, liquid-filling valve 2 is arranged in the damping oil 3 between floating piston and upper end cover, and liquid-filling valve center is provided with oil through, floating piston Shang Xia 4 two end faces be respectively equipped with groove, one end is that discoid groove 4-1 contacts with high-pressure inert gas 6, the other end is that the discoid groove 4-2 of stepped shaft contacts with damping oil 3, and the groove at two ends makes floating piston middle part form energy-absorbing thin-walled.
The end face that the floating piston 4 of the present embodiment contacts with damping oil 3 is provided with and is circular boss, has two sulculus 4-3 on boss, and two sulculuses are on same straight line; Annular groove 4-4 together with floating piston 4 has with clutch release slave cylinder contact side, is provided with the seal ring 5 that is full of groove in groove; Clutch release slave cylinder 3 is welded to connect with lower seal end cap 7, and lower seal end cap 7 end faces have the tapped hole that self sealing gas-charging connection is installed, and tapped hole central axis and clutch release slave cylinder 3 central axis coincide.
The Ce center that approaches of liquid-filling valve and upper end cover is provided with cylinder shape groove 2-1, cylinder shape groove surrounding is annular boss 2-2, oil through is made up of four through hole 2-3 that are arranged on place of cylinder shape groove bottom centre, the top of four through holes is provided with shell fragment 2-4 on liquid-filling valve, the base portion of four through holes is provided with reed group 2-5 under liquid-filling valve, on liquid-filling valve, under shell fragment and liquid-filling valve, reed group is all fixed on the main valve body of liquid-filling valve by rivet 2-6, between liquid-filling valve and clutch release slave cylinder surface of contact, is provided with seal ring 11.
Floating piston 4 is embedded in clutch release slave cylinder 1, by isolated to damping oil 3 and inert gas 6, forms independently oil cylinder and cylinder; Liquid-filling valve 2 is fixedly mounted in clutch release slave cylinder 1 and forms a hydraulic accumulator with floating piston 4; On cylinder barrel, end cover 9, with clutch release slave cylinder 1 by linking together along seam welding, has tapped hole on end cover on cylinder barrel, and rapid pipe joint 10 is threaded connection on upper end cover 9, contacts with vibration damper rodless cavity, and hydraulic accumulator is supplemented or release fluid; Cylinder barrel lower seal end cap 7 by linking together along seam welding, has tapped hole on cylinder barrel end cover with clutch release slave cylinder 1, and self sealing gas-charging connection 8 is threaded connection in lower seal end cap 7, and air chamber is filled with to inert nitrogen gas.
Liquid-filling valve main valve body lower end has four apertures, is convenient to fluid circulation, and upper and lower reed category is similar to the spool of valve, under oil pressure pressure, elastic strain can occur.In the time that accumulator supplements fluid to vibration damper rodless cavity, upper reed plate is opened large opening under oil liquid pressure, rapidly rodless cavity is carried out to fluid and supplements; When accumulator accumulation of energy, while absorbing rodless cavity hydraulic energy, reed cuts out under oil liquid pressure, makes opening very little, thereby slowly to accumulator accumulation of energy; Lower reed group and upper reed plate are arranged on rivet, are finally assemblied on liquid-filling valve main valve body.
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. the miniature noise elimination accumulator for vibration damper, comprise clutch release slave cylinder and the fixing seal upper-lower seal end cap at described clutch release slave cylinder two ends, on end cover, be provided with the rapid pipe joint communicating with vibration damper rodless cavity on described, on described lower seal end cap, (7) are provided with self sealing gas-charging connection, it is characterized in that: in the cavity of described clutch release slave cylinder, be provided with by seal ring and be entrenched in the floating piston on clutch release slave cylinder inwall, on the clutch release slave cylinder between described upper end end-blocking lid (9) and described floating piston, be installed with liquid-filling valve (2), the operative end surface of described liquid-filling valve and floating piston is all perpendicular to the central axis of described clutch release slave cylinder, between described floating piston and upper end cover, be filled with damping oil, between described floating piston and lower sealing cover, be filled with inert gas or nitrogen, described liquid-filling valve is arranged in the damping oil between described floating piston and upper end cover, described liquid-filling valve center is provided with oil through, the upper and lower two end faces of described floating piston (4) is respectively equipped with groove, and one end is that discoid groove contacts with high-pressure inert gas (6), the other end is that the discoid groove of stepped shaft contacts with damping oil (3), and the groove at two ends makes floating piston middle part form energy-absorbing thin-walled.
2. the miniature noise elimination accumulator for vibration damper according to claim 1, is characterized in that: the end face that described floating piston (4) contacts with damping oil (3) is provided with and is circular boss, has two sulculuses on described boss, and two sulculuses are on same straight line.
3. the miniature noise elimination accumulator for vibration damper according to claim 1, is characterized in that: annular groove together with described floating piston (4) at least has with clutch release slave cylinder contact side, is provided with the seal ring (5) that is full of groove in described groove.
4. according to the miniature noise elimination accumulator for vibration damper described in claim, it is characterized in that: described clutch release slave cylinder (3) is welded to connect with lower seal end cap (7), described lower seal end cap (7) end face has the tapped hole that self sealing gas-charging connection is installed, and described tapped hole central axis and clutch release slave cylinder (3) central axis coincide.
5. the miniature noise elimination accumulator for vibration damper according to claim 1, it is characterized in that: the Ce center that approaches of described liquid-filling valve and described upper end cover is provided with cylinder shape groove, described cylinder shape groove surrounding is annular boss, described oil through is made up of four through holes that are arranged on place of described cylinder shape groove bottom centre, the top of described four through holes is provided with shell fragment on liquid-filling valve, the base portion of described four through holes is provided with reed group under liquid-filling valve, on described liquid-filling valve, under shell fragment and liquid-filling valve, reed group is all fixed on the main valve body of described liquid-filling valve by rivet.
6. the miniature noise elimination accumulator for vibration damper according to claim 5, is characterized in that: between described liquid-filling valve and clutch release slave cylinder surface of contact, be provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385362.7A CN104154168B (en) | 2014-08-06 | 2014-08-06 | A kind of miniature noise elimination accumulator for damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410385362.7A CN104154168B (en) | 2014-08-06 | 2014-08-06 | A kind of miniature noise elimination accumulator for damper |
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| CN104154168A true CN104154168A (en) | 2014-11-19 |
| CN104154168B CN104154168B (en) | 2017-03-29 |
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| CN201410385362.7A Active CN104154168B (en) | 2014-08-06 | 2014-08-06 | A kind of miniature noise elimination accumulator for damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090103A (en) * | 2016-06-16 | 2016-11-09 | 江苏大学 | A kind of miniature Accumulator for amortisseur |
| CN108626393A (en) * | 2017-03-16 | 2018-10-09 | 罗伯特·博世有限公司 | Oil preserving piston |
| CN112324723A (en) * | 2020-10-30 | 2021-02-05 | 杰锋汽车动力系统股份有限公司 | Bellows energy storage ware |
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| CN2434473Y (en) * | 2000-07-12 | 2001-06-13 | 福隆尖端科技股份有限公司 | Liquid-gas separating bicycle shock absorber |
| CN201475229U (en) * | 2009-07-20 | 2010-05-19 | 乐清市乐泰重型机械配件有限公司 | Mine vehicle oil-gas front suspension cylinder assembly |
| CN201739416U (en) * | 2010-06-10 | 2011-02-09 | 周森祥 | Shock damper |
| US20110101579A1 (en) * | 2009-10-30 | 2011-05-05 | Great Lakes Sound & Vibration, Inc. | Multi-Stage Telescopic Shock Absorber |
| CN102518730A (en) * | 2011-12-31 | 2012-06-27 | 张洪领 | Inflatable vibration damper |
| CN203146686U (en) * | 2013-01-30 | 2013-08-21 | 苏州萃智新技术开发有限公司 | Improved damping device |
| CN103711825A (en) * | 2012-09-28 | 2014-04-09 | 日立汽车系统株式会社 | Shock absorber |
| CN204083040U (en) * | 2014-08-06 | 2015-01-07 | 江苏华彤新能源科技有限公司 | For the miniature noise elimination accumulator of vibration damper |
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2014
- 2014-08-06 CN CN201410385362.7A patent/CN104154168B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434473Y (en) * | 2000-07-12 | 2001-06-13 | 福隆尖端科技股份有限公司 | Liquid-gas separating bicycle shock absorber |
| CN201475229U (en) * | 2009-07-20 | 2010-05-19 | 乐清市乐泰重型机械配件有限公司 | Mine vehicle oil-gas front suspension cylinder assembly |
| US20110101579A1 (en) * | 2009-10-30 | 2011-05-05 | Great Lakes Sound & Vibration, Inc. | Multi-Stage Telescopic Shock Absorber |
| CN201739416U (en) * | 2010-06-10 | 2011-02-09 | 周森祥 | Shock damper |
| CN102518730A (en) * | 2011-12-31 | 2012-06-27 | 张洪领 | Inflatable vibration damper |
| CN103711825A (en) * | 2012-09-28 | 2014-04-09 | 日立汽车系统株式会社 | Shock absorber |
| CN203146686U (en) * | 2013-01-30 | 2013-08-21 | 苏州萃智新技术开发有限公司 | Improved damping device |
| CN204083040U (en) * | 2014-08-06 | 2015-01-07 | 江苏华彤新能源科技有限公司 | For the miniature noise elimination accumulator of vibration damper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090103A (en) * | 2016-06-16 | 2016-11-09 | 江苏大学 | A kind of miniature Accumulator for amortisseur |
| CN106090103B (en) * | 2016-06-16 | 2017-12-22 | 江苏大学 | A kind of miniature Accumulator for damper |
| CN108626393A (en) * | 2017-03-16 | 2018-10-09 | 罗伯特·博世有限公司 | Oil preserving piston |
| CN112324723A (en) * | 2020-10-30 | 2021-02-05 | 杰锋汽车动力系统股份有限公司 | Bellows energy storage ware |
Also Published As
| Publication number | Publication date |
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| CN104154168B (en) | 2017-03-29 |
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Effective date of registration: 20170417 Address after: Jiangyan District 225500 of Jiangsu city of Taizhou Province Gu Gao Zhen industrial zone. Patentee after: Jiangsu Huatong shock absorber manufacturing Co., Ltd. Address before: Jiangyan City, Jiangsu province 225500 Taizhou City Gu Gao Zhen industrial zone. Patentee before: Jiangsu Huatong New Energy Technology Co., Ltd. |
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