CN100497992C - Pump type displacement correlated damping shock absorber - Google Patents
Pump type displacement correlated damping shock absorber Download PDFInfo
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- CN100497992C CN100497992C CNB2007100548228A CN200710054822A CN100497992C CN 100497992 C CN100497992 C CN 100497992C CN B2007100548228 A CNB2007100548228 A CN B2007100548228A CN 200710054822 A CN200710054822 A CN 200710054822A CN 100497992 C CN100497992 C CN 100497992C
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Abstract
This invention relates to a pump offset relative damping-variable vibration damper including an outer cylinder with sealed top and bottom, a hydraulic working cylinder is set in it and contains a piston with a circulation hole, a piston rod connected with it and a retainer, the lower part of the working cylinder is connected with a bottom valve base, the upper part is connected with a relief valve base and an oil seal base, an oil bossing is set between the working cylinder and the outer tube wall and an oil circulation channel is formed between the outside wall of the working cylinder and the inside wall of an outer cylinder, an inlet single-way valve, a circulation single-way valve and a damped single-way valve are set at the port of the circulation channels.
Description
Technical field
The invention belongs to the configuring technical field of suspension device for vehicle, is a kind of pump type displacement correlated damping shock absorber that is applicable to various vehicle suspension systems.
Background technique
In technique known, be provided with usually in the vibration damper that vehicle suspension is used and restore unloading valve, recovery throttle valve and flowing valve, be laid with recuperation valve, compression throttling valve and compression unloading valve on the foot valve seat.In the process of vehicle driving, mainly rely on the reaction force of the damping function generation of above-mentioned valve member to stop moving up and down of piston, thereby absorb the vibrational energy of vehicle and make it be converted into heat energy.And the size of its damping force depends on the flexible size of each valve member valve block group.That is to say, in case after each valve block group adjustment installed, the damping characteristic of this each valve member of vibration damper and the damping property of vibration damper just determined that also its scope that adapts to pavement behavior is also determined thereupon.When the pavement behavior of vehicle driving exceeded accommodation, excessive shock and vibration can't be inhibited, and the damping property of vibration damper can't be adjusted in the vehicle driving process, more can not adjust automatically randomly.And, used valve member complex structure, fluid can not fully circulate inside and outside clutch release slave cylinder, and radiating effect is poor, and seal element is often because of being subjected to the influence premature failure of excessive temperature.
Summary of the invention
The purpose of this invention is to provide a kind of can simplified structure, realize that damping regulates at random automatically according to the variation of load, and be quick on the draw, reliable operation, good heat dissipation effect is applicable to the pump type displacement correlated damping shock absorber of various different pavement conditions.
Realize that the technological scheme that purpose of the present invention is taked is: this vibration damper has an outer cylinder of encapsulation up and down, be provided with the hydraulic work cylinder in the tube, the piston of band opening and the snubber of piston rod that is connected with piston and setting are housed in the clutch release slave cylinder, the lower port place of clutch release slave cylinder is connected with foot valve seat, the upper port place is connected with off-load valve seat and the oil sealing base that is connected with the off-load valve seat, be provided with the fluid air guide sleeve between clutch release slave cylinder and the outer tube wall, leave the gap between the outer wall of air guide sleeve and the outer cylinder inwall, and constitute the fluid circulation canal by this gap, the place is provided with in line check valve at foot valve seat liquid chunnel mouth, the one-way valve that piston liquid chunnel mouth place is provided with the circulation one-way valve or has damping function, the place is provided with the damping one-way valve at off-load valve seat liquid chunnel mouth, and clutch release slave cylinder inwall middle part has the change section bypass groove that is used for the draining drag reduction more than at least 2.
Described damping one-way valve is to be made of one or more stacked ring-shaped valves or dish shape spring valve plate, and its valve block compressing member outer rim is a chamfering or circular-arc.
Described off-load valve seat is provided with the off-load oil drain passage, and this place, passway is provided with the drain pan of annular, and the outer rim of drain pan has the pretension boss;
Described snubber comprises upper limit device and lower retainer, and upper limit device and lower retainer can be separately positioned on the position up and down of piston simultaneously, also can the upper limit device be set separately on the top of piston, or between foot valve seat and piston lower retainer be set separately.
Described upper limit device comprises the corresponding up and down spring abutment that is sleeved on the piston rod, and pressure spring is housed on the spring abutment.
Described lower retainer comprises spring abutment and following spring abutment, between two pressure spring is housed, and the excircle of last spring abutment contacts with the clutch release slave cylinder barrel by rubber ring, which is provided with the fluid through hole; Following spring abutment is packed on the foot valve seat.
The pump type displacement correlated damping shock absorber of making according to such scheme, realize the variation at random automatically adjustment of damping with its simple structure according to load, and the damping power can realize regulating on a large scale, vibration to suspension is quick on the draw, regulate rapidly, the damping property needs that can adapt to various pavement behaviors especially can be avoided automobile significantly impact of judder on abominable road.Simultaneously, the work fluid of this vibration damper all circulates at the inside and outside through-circulation of clutch release slave cylinder, and contacts with the outer tube wall large size, makes vibration damper can obtain splendid radiating effect thus, avoids the premature failure of seal element.This vibration damper is applicable to the configuration of the suspension system that various vehicles have higher requirements to damping, advantage such as have that reasonable in design, simple structure, functional reliability are strong, good damping result, long service life, cost are low.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the enlarged view of Fig. 1;
Fig. 3 is the partial enlarged drawing of damping one-way valve among Fig. 2;
Fig. 4 is the structural representation of the embodiment of the invention 1;
The structural representation of Fig. 5 embodiment of the invention 2;
Fig. 6 is the structural representation of the embodiment of the invention 3;
Fig. 7 is a working state damping characteristic schematic representation of the present invention.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, pump type displacement correlated damping shock absorber of the present invention is by oil sealing base 1, oil sealing 2, off-load valve seat 3, air guide sleeve 4, piston rod 5, clutch release slave cylinder 6, outer cylinder 7, upper limit device 8, piston 9, lower retainer 10, the link 12 that foot valve seat 11 and two ends are connected with suspension system is formed, wherein: the piston rod 5 that piston 9 is housed in the clutch release slave cylinder 6 in outer cylinder 7 and is connected with piston, the lower port place and the foot valve seat 11 of clutch release slave cylinder 7 are tightly connected, the upper port place is provided with off-load valve seat 3 and the oil sealing base 1 that is connected with off-load valve seat 3, and oil sealing 2 is housed in the oil sealing base 1.11 liquid chunnel mouth places are provided with in line check valve 11a at foot valve seat; Piston 9 liquid chunnel mouth places are provided with circulation one-way valve 9a, the one-way valve that also it can be arranged to have damping function, and each valve member constitutes by one or more ring-shaped valves or dish shape spring valve plate, spring seat and stage clip, all can play the effect of damping one-way valve.Off-load valve seat 3 is provided with one or more unloading channels hole 3b, and the passway is provided with the damping one-way valve 3a that is used for off-load, the release of work fluid under damping state when being used for piston 9 and in clutch release slave cylinder 6, moving up and down, this valve constitutes by placing one or more ring-shaped valves between off-load valve seat 3 and the oil sealing base 1 or dish shape elastic valve plate 3a1 and pretension to adjust pad 3a2, the place, passway of the off-load oil drain passage 3b of off-load valve seat 3 is provided with the drain pan 3a3 of annular, the outer rim of drain pan has pretension boss 3a4, so that compressing the back, valve block forms self pretightening force, and adjust size thus to off-load liquid flow damping, the outer rim that pretension is adjusted pad 3a2 and valve block surface of contact is a chamfering or circular-arc, stress when avoiding valve block to open is concentrated, and is beneficial to the upwards distortion of valve block simultaneously.Be provided with fluid air guide sleeve 4 between clutch release slave cylinder 6 and the outer tube wall, the gap between the outer wall of air guide sleeve 4 and outer cylinder 7 inwalls constitutes the fluid circulation canal of annular cross section, makes oil return and outer cylinder 7 inwalls that bigger area of contact be arranged, and helps the heat radiation of work fluid.Clutch release slave cylinder 6 middle part inwalls have has tapered bypass groove 6a at least more than 2, when piston is positioned at this zone and produces displacement, can play the effect of draining drag reduction, and the draining flow is big when realizing little amplitude simultaneously, and damping is little; The draining flow is little during large amplitude, and damping is big, the automatic adjusting of the little damping scope of vibration damping when travelling on better road surface to adapt to vehicle.
The snubber that is provided with in clutch release slave cylinder 6 comprises upper limit device 8 and lower retainer 10, and this snubber can have three kinds of different mode of executions:
Referring to Fig. 4, be embodiments of the invention 1, expression can be disposed upper limit device 8 and lower retainer 10 simultaneously among the figure, and places the upper and lower position of piston 9 respectively.
Referring to Fig. 5, be embodiments of the invention 2, expression can be disposed upper limit device 8 separately on the top of piston 9 among the figure.
Referring to Fig. 6, be embodiments of the invention 3, expression can be disposed lower retainer 10 separately near the foot valve seat place in piston 9 bottoms among the figure.
In conjunction with Fig. 2, referring to Fig. 7, it is the damping characteristic schematic representation of pump type displacement correlated damping shock absorber working state of the present invention, its working principle is: when vehicle travels on road surface preferably, vibrate lessly, piston 9 moves up and down by a small margin in the softness district of the bypass groove 6a at clutch release slave cylinder 6 middle parts, along with the variation of piston oil liquid pressure about in the of 9, Yi Mian fluid flows into the one side that reduces pressure by bypass groove 6a by compression, at this moment the damping minimum.Vehicle driving is during to poor slightly road surface, along with the increase of Vehicular vibration amplitude, and 9 moving up and down between the transition zone up and down of piston at bypass groove 6a position, because bypass groove 6a is for becoming section, piston displacement is during near the end of bypass groove 6a, and its draining flow reduces, and damping power increases.When vehicle travels on worse road surface, the displacement amplitude of piston 9 is the regional extent between normally distinguishing up and down then, when piston 9 upwards is moved to bypass groove 6a and goes up normal district, the oil liquid pressure in clutch release slave cylinder chamber, top increases, and the circulation one-way valve 9a on the piston 9 is closed, off-load damping one-way valve 3a opens, pressure oil liquid is having the shoe cream room that leaks into outer cylinder 7 bottoms under the damping state by the fluid circulation canal of this valve between guide housing 4 and outer shell barrel, and the in line check valve 11a on foot valve seat 11 pumps into the active chamber of piston 9 bottoms; When piston 9 is moved to down normal district downwards, the oil liquid pressure of bottom active chamber increases, and the damping unloading one-way valve 11a on the foot valve seat 11 is closed, circulation one-way valve 9a on the piston 9 opens, pressure oil liquid enters piston top active chamber by circulation one-way valve 9a, by off-load oil drain passage 3b, by unloading one-way valve 3a, the annular fluid circulation canal between guide housing 4 and outer shell barrel leaks into the shoe cream room of outer cylinder 7 bottoms again under having than big damping state again; Reach the effect of vibration damping thus with bigger damping force.When vehicle travels on very poor road surface, piston 9 displacement amplitudes then near the brute force at clutch release slave cylinder 6 two ends up and down the scope between the inhibition zone move, when moving up in last inhibition zone, then the last spring abutment end face 8a of upper limit device 8 can stop up the off-load oil drain passage 3b of off-load valve seat 3, the oil pressure of top active chamber stops off-load or very a spot of fluid is arranged by matching gap or the special slit trace off-load that is provided with, and it is maximum that piston 9 up dampings reach; When piston 9 moves down in following inhibition zone, then the last spring abutment end face of lower retainer can stop up the liquid opening on the piston, the oil pressure of bottom active chamber stops off-load or very a spot of fluid is arranged by matching gap or the special slit trace off-load that is provided with, it is maximum that piston 9 descending dampings reach, thereby reach the effectiveness in vibration suppression of maximum damping.This shows, vibration damper of the present invention at clutch release slave cylinder 6 inner fluid through in line check valve 11a constantly " pump oil " from bottom to top, and the fluid that is used for release that the off-load damping one-way valve 3a from off-load valve seat 3 discharges always from top to bottom, flows into the bottom of shoe cream room 7a through the annular pass of air guide sleeve 4 peripheries.Formed fluid circulation canal between the inwall of the outer wall of air guide sleeve 4 and outer cylinder 7 can be avoided swiftly flowing fluid and air to mix mutually and produce emulsification, and make fluid obtain good heat radiation.Simultaneously, bypass groove 6a matches with the rigidity of the elastic element of off-load damping one-way valve 3a, and matches with upper and lower spacing device 8,10, and damping is changed with the stroke of piston 9.The resistance coefficient of this vibration damper is the function of displacement, for the conventional suspension that the suspension height changes with load, can realize that damping regulates automatically with load, can avoid automobile intense impact of vibration significantly on abominable road thus.
Claims (4)
1, a kind of pump type displacement correlated damping shock absorber, this vibration damper has an outer cylinder of encapsulation up and down, be provided with the hydraulic work cylinder in the tube, the piston of band opening and the snubber of piston rod that is connected with piston and setting are housed in the clutch release slave cylinder, clutch release slave cylinder lower port place is connected with foot valve seat, be provided with the fluid air guide sleeve between clutch release slave cylinder and the outer tube wall, leave the gap between the outer wall of air guide sleeve and the outer cylinder inwall, and constitute the fluid circulation canal by this gap, the place is provided with in line check valve at foot valve seat liquid chunnel mouth, be provided with lower retainer in the piston bottom, it is characterized in that: clutch release slave cylinder upper port place is connected with off-load valve seat and the oil sealing base that is connected with the off-load valve seat, be equipped with the damping one-way valve at off-load valve seat liquid chunnel mouth and piston liquid chunnel mouth place, the top of piston is provided with the upper limit device, and clutch release slave cylinder inwall middle part has the change section bypass groove that is used for the draining drag reduction more than at least 2.
2, pump type displacement correlated damping shock absorber according to claim 1 is characterized in that: described damping one-way valve is to be made of one or more stacked ring-shaped valves or dish shape spring valve plate, and its valve block compressing member outer rim is a chamfering or circular-arc.
3, pump type displacement correlated damping shock absorber according to claim 1 is characterized in that: described upper limit device comprises the corresponding up and down spring abutment that is sleeved on the piston rod, and pressure spring is housed on the spring abutment.
4, pump type displacement correlated damping shock absorber according to claim 1 is characterized in that: the last spring abutment that is provided with in the described lower retainer is provided with the fluid through hole, and following spring abutment is packed on the foot valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100548228A CN100497992C (en) | 2007-07-23 | 2007-07-23 | Pump type displacement correlated damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100548228A CN100497992C (en) | 2007-07-23 | 2007-07-23 | Pump type displacement correlated damping shock absorber |
Publications (2)
| Publication Number | Publication Date |
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| CN101093009A CN101093009A (en) | 2007-12-26 |
| CN100497992C true CN100497992C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100548228A Active CN100497992C (en) | 2007-07-23 | 2007-07-23 | Pump type displacement correlated damping shock absorber |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956781A (en) * | 2010-10-25 | 2011-01-26 | 重庆瑞翱机电设备有限公司 | Damp self-regulating front damper of motorcycle and manufacturing method thereof |
| CN103016594B (en) * | 2012-12-27 | 2015-07-08 | 浙江金波减震器制造有限公司 | Damper with automatic damping adjusting function |
| CN103727163B (en) * | 2014-01-06 | 2016-01-20 | 浙江中兴减震器制造有限公司 | Three single cycle formula automobile absorbers |
| JP2017044240A (en) * | 2015-08-25 | 2017-03-02 | 株式会社ショーワ | Pressure buffer device |
| CN107917162B (en) * | 2017-12-27 | 2023-08-08 | 苏州西捷克缓冲科技有限公司 | Adjustable oil pressure buffer with automatic compensation function |
| KR102471852B1 (en) * | 2018-05-16 | 2022-11-28 | 히다치 아스테모 가부시키가이샤 | cylinder device |
| CN108488145B (en) * | 2018-06-26 | 2019-11-08 | 永康市嘉图工业产品设计有限公司 | A kind of oil cylinder |
| CN109356956B (en) * | 2018-12-07 | 2023-11-21 | 广州海川汽车配件制造有限公司 | Shock absorber capable of manually adjusting damping and manufacturing method |
| WO2021171917A1 (en) * | 2020-02-26 | 2021-09-02 | 株式会社村田製作所 | Fluid control device |
| CN112855829B (en) * | 2021-01-21 | 2022-11-25 | 南阳淅减汽车减振器有限公司 | Restoration hydraulic buffer structure of shock absorber and shock absorber |
| CN113931961B (en) * | 2021-09-09 | 2023-03-28 | 神龙汽车有限公司 | Novel hydraulic self-adaptive damping adjustment shock absorber |
| CN113944717B (en) * | 2021-10-19 | 2023-06-30 | 中国北方车辆研究所 | Damping sectional matching device of blade damper |
| CN114542643B (en) * | 2022-03-24 | 2024-05-03 | 姚海洋 | Variable damping force automobile shock absorber |
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2007
- 2007-07-23 CN CNB2007100548228A patent/CN100497992C/en active Active
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| CN101093009A (en) | 2007-12-26 |
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