CN104265822B - Automobile damp adjustable damper - Google Patents

Automobile damp adjustable damper Download PDF

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Publication number
CN104265822B
CN104265822B CN201410461148.5A CN201410461148A CN104265822B CN 104265822 B CN104265822 B CN 104265822B CN 201410461148 A CN201410461148 A CN 201410461148A CN 104265822 B CN104265822 B CN 104265822B
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CN
China
Prior art keywords
cylinder barrel
piston
work cylinder
oil storage
work
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Application number
CN201410461148.5A
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Chinese (zh)
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CN104265822A (en
Inventor
张兴海
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.)
Chongqing Sokon Industry Group Co Ltd
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Chongqing Sokon Industry Group Co Ltd
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Priority to CN201410461148.5A priority Critical patent/CN104265822B/en
Publication of CN104265822A publication Critical patent/CN104265822A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • F16F9/3221Constructional features of piston rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/3405Throttling passages in or on piston body, e.g. slots
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • F16F9/362Combination of sealing and guide arrangements for piston rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • F16F9/366Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings

Abstract

The invention discloses a kind of automobile damp adjustable damper, comprise piston body, be fixedly connected on the piston rod of piston body, work cylinder barrel and oil storage cylinder barrel, work cylinder barrel is located at oil storage cylinder barrel inside, oil storage cylinder barrel is fixedly connected with and passes through a black box I with the lower end of work cylinder barrel and seals, piston body and piston rod stretch in work cylinder barrel from the upper end of work cylinder barrel and work cylinder barrel upper end seals by a black box II, piston body is divided into working cylinder tube inner chamber up and down and restores chamber and compression chamber, the part that oil storage cylinder tube inner chamber is positioned at beyond work cylinder barrel forms shoe cream room, work cylinder barrel sidewall is provided with the oil return opening that is communicated with compression chamber and shoe cream room, automobile of the present invention damp adjustable damper, can be according to relative velocity between vehicle suspension and wheel different, the damping of the damper automatically damping size being regulated.

Description

Automobile damp adjustable damper
Technical field
The present invention relates to a kind of damper element, specifically a kind of automobile damp adjustable damper.
Background technology
Damper is the damper element extensively adopting in automobile suspension system, and its principle is, when vehicle frame and vehicle bridgeDo reciprocal relative motion and piston while moving back and forth in the cylinder barrel of damper, the fluid in damper housing justFlow into and restore chambeies by some narrow holes from compression chamber repeatedly, now, the friction of liquid and inwall andThe interior friction of fluid molecule just forms the damping force to vibration. The size of damping force of vibration damper depends on restrictionThe viscosity coefficient of area and fluid, and existing damper is at work, it is steady that the viscosity of fluid keeps substantiallyFixed, the choke area that fluid is flowed through simultaneously also remains unchanged, therefore the damping force of existing damper size baseThis maintenance is stable, and automobile is under different load-carryings, different road excitation, the different speed of a motor vehicle, different driving cycleDifferent to the requirement of damping force of vibration damper size.
Therefore,, for overcoming the above problems, need a kind of in the different load-carryings of automobile, different road excitation, differenceThe speed of a motor vehicle, different driving cycle, can be according to relative velocity between vehicle suspension and wheel different, automaticallyThe automobile that damping size is regulated damp adjustable damper.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, provide the one can be according to carBetween suspension and wheel, relative velocity is different, the automobile damping automatically damping size being regulatedAdjustable shock absorber.
Automobile of the present invention damp adjustable damper, comprises piston body, is fixedly connected on the work of piston bodyStopper rod, work cylinder barrel and oil storage cylinder barrel, work cylinder barrel is located at oil storage cylinder barrel inside, oil storage cylinder barrel and work cylinder barrelLower end be fixedly connected with and pass through a black box I sealing, piston body and piston rod are from the upper end of work cylinder barrelStretch in work cylinder barrel and work cylinder barrel upper end by a black box II sealing, piston body will be worked in cylinder barrelChamber is divided into up and down restores chamber and compression chamber, and the part that oil storage cylinder tube inner chamber is positioned at beyond work cylinder barrel forms storageOil pocket, work cylinder barrel sidewall is provided with the oil return opening that is communicated with compression chamber and shoe cream room;
Piston body comprises columned piston upper body and piston lower body, piston upper body inner cylinder face and piston lower bodyExternal cylindrical surface is slidably matched, and forms plunger shaft, and be provided with in this plunger shaft between piston upper body and piston lower bodyBack-moving spring, under piston, body sidewall has the throttling of multiple connection compression chambers and plunger shaft along piston body axial distributionHole, piston upper body end face is provided with and is communicated with the oil-in that restores chamber and plunger shaft;
Further, described piston upper body inwall is provided with position limiting convex ring;
Further, described piston rod is provided with positioning boss, on piston rod, is fixedly connected with location by screw threadNut, piston body be placed on piston rod and be located at positioning boss and setscrew nut between;
Further, described throttle orifice comprises the sub-hole of circumferential equally distributed multiple throttlings along piston upper body;
Further, in described work cylinder barrel, be provided with guide holder assembly; Guide holder assembly comprises with work cylinder barrel solidThe fixed guide holder housing connecting and the rubber that is arranged in guide holder housing and piston rod is slidably matched;
Further, described oil storage cylinder barrel overcoat is provided with the guarantor who is slidably matched and seals with oil storage cylinder barrel external cylindrical surfaceProtect cylinder barrel, protection cylinder barrel upper end is fixedly connected with piston rod upper end;
Further, described piston rod is positioned at and restores the surface in chamber and be provided with locating ring, locating ring and working cylinderCylinder is provided with return spring between upper end.
The invention has the beneficial effects as follows: automobile of the present invention damp adjustable damper, when wheel is rushedWhile hitting, piston rod moves reciprocatingly promotion piston body in working chamber, the warp repeatedly of the fluid in damperThrottle orifice and the oil-in crossed on piston body flow back and forth between compression chamber and recovery chamber, and then form shakingMoving damping force, in the time that vehicle suspension is subject to larger impact (as vehicle is crossed in curved process in high speed), pistonBody is larger with respect to the speed of working cylinder, and the oil liquid pressure moment in working chamber significantly rises, and then pushes awayThe elastic force that moving piston lower body overcomes back-moving spring slips in piston upper body, and the inner cylinder face of piston upper body will keep offLive the most of restriction on body sidewall under piston, the choke area that fluid can be flowed through reduces, and entersAnd the damping force of raising damper makes damper become " firmly ", ensure the secure support of suspension to vehicle body, improveThe stability of vehicle body, the impact being subject to when vehicle suspension hour, also phase of the oil liquid pressure that piston lower body is subject toShould be less, it is also corresponding shorter that piston lower body slips into distance in piston upper body, piston upper body cannot block orPerson blocks the restriction of small part, and the choke area that fluid can be flowed through is larger, and then reduces dampingThe damping force of device, makes damper become " soft ", ensures the riding comfort of vehicle.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is A place partial enlarged drawing in Fig. 1;
Structural representation when Fig. 3 is piston body contraction of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention. As shown in the figure, in the present embodiment, automobile subtracts with damp adjustableShake device, comprises piston body, is fixedly connected on the piston rod 7 of piston body, work cylinder barrel 3 and oil storage cylinder barrel 4,Work cylinder barrel 3 is located at oil storage cylinder barrel 4 inside, and oil storage cylinder barrel 4 is fixedly connected with and leads to the lower end of work cylinder barrel 3Cross a black box I 1 and seal, piston body and piston rod 7 stretch into work cylinder barrel 3 from the upper end of work cylinder barrel 3In and work cylinder barrel 3 upper ends seal by a black box II 10, piston body cylinder barrel 3 inner chambers of working are upper and lowerBe divided into and restore chamber 6 and compression chamber 5, the part that oil storage cylinder barrel 4 inner chambers are positioned at beyond work cylinder barrel 3 forms storageOil pocket 19, work cylinder barrel 3 sidewalls are provided with the oil return opening 2 that is communicated with compression chamber 5 and shoe cream room 19,
Piston body comprises columned piston upper body 15 and piston lower body 16, piston upper body 15 inner cylinder faces withPiston lower body 16 external cylindrical surfaces are slidably matched, and between piston upper body 15 and piston lower body 16, form plunger shaft18, and be provided with back-moving spring 17 in this plunger shaft 18, piston lower body 16 sidewalls have along piston body axial distributionThe throttle orifice 12 of multiple connection compression chambers 5 and plunger shaft 18, piston upper body 15 end faces are provided with to be communicated with and restoreThe oil-in 14 of chamber 6 and plunger shaft 18, in the time that wheel is subject to impacting, piston rod 7 will promote piston body and existIn working chamber, move reciprocatingly, the fluid in damper passes through throttle orifice 12 and the oil-feed on piston body repeatedlyMouth 14 flows back and forth between compression chamber 5 and recovery chamber 6, and then forms the damping force to vibration, works as vehicleWhen suspension is subject to larger impact (if vehicle is crossing at a high speed in curved process), piston body is with respect to working cylinderSpeed is larger, and the oil liquid pressure moment in working chamber significantly rises, and then promotion piston lower body 16 overcomes multipleThe elastic force of position spring 17 slips in piston upper body 15, and the inner cylinder face of piston upper body 15 will block under pistonMost of restriction on body 16 sidewalls, the choke area that fluid can be flowed through reduces, and then improvesThe damping force of damper, makes damper become " firmly ", ensures the secure support of suspension to vehicle body, raising vehicle bodyStability, hour, the oil liquid pressure that piston lower body 16 is subject to is also corresponding in the impact being subject to when vehicle suspensionLittle, it is also corresponding shorter that piston lower body 16 slips into distance in piston upper body 15, and piston upper body 15 cannot keep offThe throttle orifice 12 of living or block small part, throttle orifice 12 areas that fluid can be flowed through are larger, enterAnd reduce the damping force of damper, and make damper become " soft ", ensure the riding comfort of vehicle.
In the present embodiment, described piston upper body 15 inwalls are provided with position limiting convex ring 13, and position limiting convex ring 13 is for limitPiston lower body 16 processed slips into the maximum displacement in piston upper body 15, in the time that suspension is subject to great impulsive force,Position limiting convex ring 13 will withstand the slippage of piston lower body 16, ensures that a certain amount of fuel-economizing hole can expose, fromAnd define the maximum damping of damper, avoid damper that " locked " occurs.
In the present embodiment, described piston rod 7 is provided with positioning boss, on piston rod 7, is fixed and is connected by screw threadBe connected to setscrew nut 11, piston body be placed on piston rod 7 and be located at positioning boss and setscrew nut 11 between,By rotation setscrew nut 11 can regulating piston body in the decrement of original state, and then adjust piston lower bodyThe quantity that throttle orifice 12 on 16 is closed under original state, thereby the minimum damping value of adjustment damper.
In the present embodiment, described throttle orifice 12 comprises along the circumferential equally distributed multiple throttlings in piston upper body 15Sub-hole, the throttle orifice 12 of this arrangement form can improve the stress of piston body in the time of work, makes to liveCock body is relatively balance of its radial force in the time of work, uses for a long time the wearing and tearing of back piston surface also more even,Extend its service life.
In the present embodiment, in described work cylinder barrel 3, be provided with guide holder assembly, guide holder assembly comprises and workThe guide holder housing that cylinder barrel 3 is fixedly connected with and the rubber that is arranged in guide holder housing and piston rod 7 is slidably matchedGlue, when piston body and piston rod 7 are during in interior reciprocatings motion of work cylinder barrel 3, when being subject on piston rod 7 necessarilyWhen the bending load of degree, the stressed of piston body surface will be extremely inhomogeneous, after long-term use, and the making of piston bodyTo greatly shorten with the life-span, and in the recovery chamber 6 of working cylinder, arrange one near working cylinder upper end and leadTo holder assembly, when piston body is in reciprocating motion process, guide holder assembly can overcome the bending of piston rod 7Load, ensures that piston body can be accurately along working cylinder axial-movement, and the rubber in guide holder housing canReduce the wearing and tearing on itself and piston rod 7 surfaces, avoid in the course of the work damage being caused in piston rod 7 surfaces simultaneouslyLose.
In the present embodiment, outer being arranged with oil storage cylinder barrel 4 external cylindrical surfaces of described oil storage cylinder barrel 4 is slidably matched alsoThe protection cylinder barrel of sealing, protection cylinder barrel upper end is fixedly connected with piston rod 7 upper ends, and protection cylinder barrel can be avoidedPiston rod 7 is to stretch out oil storage cylinder barrel 4 rear surfaces impaired, on the other hand, damper after long-term operation, oilLiquid can leak out unavoidably from the black box II 10 of oil storage cylinder barrel 4 upper ends, and protection cylinder barrel can avoid fromThe fluid of oil storage cylinder barrel 4 leak oozes out outside damper, avoids its environment to external world.
In the present embodiment, the surface that described piston rod 7 is positioned at recovery chamber 6 is provided with locating ring 9, locationBetween ring 9 and work cylinder barrel 3 upper ends, be provided with return spring 8, when car body suspension is impacted, under piston bodyAfter row finishes, it is up that return spring 8 will promote piston rod 7, make piston body return to initial position.
Finally explanation, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, althoughWith reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art should be appreciated thatCan modify or be equal to replacement technical scheme of the present invention, and not depart from technical solution of the present inventionAim and scope, it all should be encompassed in the middle of claim scope of the present invention.

Claims (7)

1. an automobile damp adjustable damper, is characterized in that: comprise piston body, be fixedly connected on workPiston rod, work cylinder barrel and the oil storage cylinder barrel of cock body; Described work cylinder barrel is located at oil storage cylinder barrel inside; Oil storageCylinder barrel is fixedly connected with and passes through a black box I with the lower end of work cylinder barrel and seals, described piston body and pistonBar stretches in work cylinder barrel from the upper end of work cylinder barrel and work cylinder barrel upper end seals by a black box II,Described piston body is divided into working cylinder tube inner chamber up and down and restores chamber and compression chamber; Oil storage cylinder tube inner chamber is positioned at workMake cylinder barrel part in addition and form shoe cream room; Described work cylinder barrel sidewall is provided with and is communicated with compression chamber and shoe cream roomOil return opening;
Described piston body comprises columned piston upper body and piston lower body, piston upper body inner cylinder face and pistonLower body external cylindrical surface is slidably matched, and between piston upper body and piston lower body, forms plunger shaft, and in this plunger shaftBe provided with back-moving spring, under piston, body sidewall has multiple connection compression chambers and plunger shaft along piston body axial distributionThrottle orifice, piston upper body end face is provided with and is communicated with the oil-in that restores chamber and plunger shaft.
2. automobile according to claim 1 damp adjustable damper, is characterized in that: described workBody inwall is provided with position limiting convex ring beyond the Great Wall.
3. automobile according to claim 2 damp adjustable damper, is characterized in that: described workStopper rod is provided with positioning boss, on piston rod, is fixedly connected with setscrew nut by screw thread, described piston body coverOn piston rod and be located between positioning boss and setscrew nut.
4. automobile according to claim 3 damp adjustable damper, is characterized in that: described jointDischarge orifice comprises the sub-hole of circumferential equally distributed multiple throttlings along piston upper body.
5. automobile according to claim 4 damp adjustable damper, is characterized in that: described workMake to be provided with in cylinder barrel guide holder assembly; Described guide holder assembly comprises the guide holder being fixedly connected with work cylinder barrelHousing and the rubber that is arranged in guide holder housing and piston rod is slidably matched.
6. automobile according to claim 5 damp adjustable damper, is characterized in that: described storageCylinder tube is arranged with the protection cylinder barrel that is slidably matched and seals with oil storage cylinder barrel external cylindrical surface outward; Described protection cylinderCylinder upper end is fixedly connected with piston rod upper end.
7. automobile according to claim 6 damp adjustable damper, is characterized in that: described workThe surface that stopper rod is positioned at recovery chamber is provided with locating ring, between locating ring and work cylinder barrel upper end, is provided with returnSpring.
CN201410461148.5A 2014-09-11 2014-09-11 Automobile damp adjustable damper Active CN104265822B (en)

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Application Number Priority Date Filing Date Title
CN201410461148.5A CN104265822B (en) 2014-09-11 2014-09-11 Automobile damp adjustable damper

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CN104265822A CN104265822A (en) 2015-01-07
CN104265822B true CN104265822B (en) 2016-05-18

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111288109B (en) * 2020-03-25 2021-11-09 东风小康汽车有限公司重庆分公司 Damping piston assembly
CN112112920A (en) * 2020-09-21 2020-12-22 重庆耐德中意减振器有限责任公司 Hollow connecting rod sealing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1115890A (en) * 1967-03-06 1968-05-29 Monroe Auto Equipment Co Improved independent suspension device for a vehicle
CN201344226Y (en) * 2008-12-24 2009-11-11 比亚迪股份有限公司 Vibration damper and vehicle with the same
CN201723635U (en) * 2010-06-30 2011-01-26 芜湖天佑汽车技术有限公司 Damping adjustable shock absorber
CN204127190U (en) * 2014-09-11 2015-01-28 重庆小康工业集团股份有限公司 Automobile damp adjustable vibration damper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1115890A (en) * 1967-03-06 1968-05-29 Monroe Auto Equipment Co Improved independent suspension device for a vehicle
CN201344226Y (en) * 2008-12-24 2009-11-11 比亚迪股份有限公司 Vibration damper and vehicle with the same
CN201723635U (en) * 2010-06-30 2011-01-26 芜湖天佑汽车技术有限公司 Damping adjustable shock absorber
CN204127190U (en) * 2014-09-11 2015-01-28 重庆小康工业集团股份有限公司 Automobile damp adjustable vibration damper

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