CN2217143Y

CN2217143Y - Two-direction adjustable system for hanging vehicle rigid equipment-shock-proof and vibration damping device

Info

Publication number: CN2217143Y
Application number: CN 94223972
Authority: CN
Inventors: 蒋东生
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-08
Filing date: 1994-11-08
Publication date: 1996-01-10
Anticipated expiration: 2004-11-08

Abstract

The utility model discloses two-direction adjustable system for hanging vehicle rigid equipment-shockproof and vibration damping device used for providing equipment-shockproof and vibration damping device which can change hanging system or other vibration system rigidity of the vehicle from two-direction in different working conditions, and simultaneously the device has the functions of shock prevention and vibration reduction. The utility model comprises a single cylinder body, upper and lower floating pistons, upper and lower elastic elements, and a piston with a rod. The upper elastic element is arranged between an upper cylinder top and the upper floating piston; the lower elastic element is arranged between a cylinder bottom and the lower floating piston; the piston with a rod is arranged between the upper and the lower floating pistons, and upper and lower vibration damping cavities are formed between the piston with rod and the upper and the lower floating pistons; the piston with a rod is provided with stretching travel vibration damping valve and a compression travel vibration damping chamber which are communicated with the upper and the lower vibration damping cavities.

Description

Bidirectional modulation vehicle suspension system stiffness means-shock damper

The utility model belongs to the parts of vehicle suspension system or other vibration systems, particularly a kind of bidirectional modulation vehicle suspension system stiffness means-shock damper.

In existing vehicle suspension system, adopt shock-absorbings such as leaf spring, coil spring, torsion bar and gas spring usually, adopt cartridge type or rocking arm type hydraulic shock absorber vibration damping.This vibration damper only has the individual event vibration-damping function, makes vehicle suspension system remain the rigidity that depends on original design under different operating modes.This rigidity make vehicle when different operating mode or vibration attenuation slow, or attached property bump increases, and not only makes to improve the speed of a motor vehicle and be restricted, and makes occupant safety, travelling comfort difference and influence working life of vehicle.

The purpose of this utility model provides a kind of vehicle can two-way automatic change vehicle suspension system or other vibration system rigidity when different operating mode, has shock-absorbing simultaneously, the shock damper of vibration damping dual functions.

The utility model is a single cylinder, and piston with rod is divided into upper and lower two-part to cylinder body, and last elastic element places between upper cylinder half top and the last floating piston; Following elastic element places down between cylinder bottom and the following floating piston, piston with rod places between the upper and lower floating piston, and and constitute upper and lower vibration damping chamber between the upper and lower floating piston, have the stretching travel damper valve and the compression stroke damper valve that communicate with upper and lower vibration damping chamber on the piston with rod.

Under nominal situation, piston with rod is made the compression work stroke under external force, compression stroke damper valve on the piston works and drives valve, make following vibration damping chamber inner fluid by compression flow into go up the vibration damping chamber and play effectiveness in vibration suppression through valve: piston with rod is being subjected under the nominal situation stretching external force and is doing the time spent, stretching damper valve on the piston works and drives valve, makes last vibration damping chamber inner fluid by compression flow into following vibration damping chamber and play effectiveness in vibration suppression through valve.

When piston with rod is violently shaken external force effect operating mode when making compression stroke, be compressed the following vibration damping chamber inner fluid of end owing to can not be in time cause in the chamber oil pressure moment and increase and compress down that elastic element makes it to participate in impedance buffering external force by the compression stroke damper valve, play the shock-absorbing effect with the vehicle shock absorber, improved the rigidity when vehicle suspension system is made compression stroke.At this moment, the utility model not only has vibration-damping function and also has incabloc function simultaneously.Otherwise, when piston with rod is violently shaken the external force operating mode when making stretching travel, being compressed the last vibration damping chamber inner fluid of end can not be in time cause oil pressure moment by the stretching damper valve and increases compression and go up elastic element, make elastic element participate in impedance damped stretching stroke external force, thereby, in the stretching working stroke, realize shock-absorbing, vibration damping dual functions, reached the purpose of this utility model.

Fig. 1 is the utility model structural representation sectional drawing.

Below in conjunction with accompanying drawing the utility model is further elaborated.

The utlity model has single cylinder 1, upper and lower elastic element 2,8, upper and lower floating piston 3,7, piston with rod 4 are divided into the upper and lower part to inner casing, and last elastic element 2 places between upper cylinder half top and the last floating piston 3; Following elastic element 8 places down between cylinder bottom and the following floating piston 7: on, following elastic element 2,8 is single step helical spring or hard elastic material or non-metallic elastic material or gas spring or hydraulic spring grease cup, also can be multiple coil spring or hard elastic material or non-metallic elastic material or gas spring or hydraulic spring grease cup, piston with rod 4 places, following floating piston 3, between 7, and with last, following floating piston 3, on 7 formations, following vibration damping chamber 5,6, have on the piston 41 of piston with rod 4 with last, following vibration damping chamber 5,6 compression stroke damper valve 9 that communicates and stretching travel damper valves 10, Fig. 2 is converted on the wheel for vehicle suspension system, be subjected to the relation property line between vertical external force P and the wheel vertical displacement f, this characteristic line can be designed to linear, also can be designed to nonlinear, characteristic line by coordinate points O is original design vehicle suspension system characteristic line I, elastic element 8 is being subjected to fiercely to impact under the external force effect and is participating in impedance buffering external force and make and move to II on the vehicle suspension system P-f relation property line in the utility model shock damper compression stroke operating mode, on former characteristic line I basis, increased the P1 value, and elastic element 2 makes vehicle suspension system P-f relation property line be displaced downwardly to III being subjected to fiercely to impact participation impedance external force under the external force effect in the negative drawing stroke operating mode, has reduced the P2 value on former characteristic line I basis.Shock damper work schematic representation when Fig. 3 is compression stroke, shock damper schematic representation when Fig. 4 is stretching travel.Because the effect of the utility model shock damper, the rigidity of vehicle suspension system or other vibration systems can change between the II → III characteristic line of P-f relation property line when different operating mode automatically, makes vehicle suspension system or other vibration systems that optimal performance be arranged.

Claims

1, a kind of bidirectional modulation vehicle suspension system stiffness means-shock damper is characterized in that it has single cylinder, upper and lower elastic element, upper and lower floating piston and piston with rod, and last elastic element places between upper cylinder half top and the last floating piston; Following elastic element places down between cylinder bottom and the following floating piston; Piston with rod places between the upper and lower floating piston, and and upper and lower floating piston between constitute upper and lower vibration damping chamber; Have the stretching travel damper valve and the compression stroke damper valve that communicate with upper and lower vibration damping chamber on the piston with rod.

2, shock damper according to claim 1 is characterized in that described upper and lower elastic element is a single-stage.

3, shock damper according to claim 1 is characterized in that described upper and lower elastic element is multistage.

4,, it is characterized in that described upper and lower elastic element is a helical spring according to claim 2,3 described shock dampers.

5,, it is characterized in that described upper and lower elastic element is that hard elastic material is made according to claim 2,3 described shock dampers.

6,, it is characterized in that described upper and lower elastic element is that non-metallic elastic material is made according to claim 2,3 described shock dampers.

7,, it is characterized in that described upper and lower elastic element is a gas spring according to claim 2,3 described shock dampers.

8,, it is characterized in that described upper and lower elastic element is a hydraulic spring grease cup according to claim 2,3 described shock dampers.