CN1059734C

CN1059734C - Automotive self-adapting surge damper

Info

Publication number: CN1059734C
Application number: CN94111386A
Authority: CN
Inventors: 张庙康
Original assignee: NANJING COLLEGE OF ARCHITECTURAL ENGINEERING
Current assignee: NANJING COLLEGE OF ARCHITECTURAL ENGINEERING
Priority date: 1994-07-16
Filing date: 1994-07-16
Publication date: 2000-12-20
Anticipated expiration: 2014-07-16
Also published as: CN1115366A

Abstract

The present invention discloses an automotive self-adapting vibration damper composed of a vibration displacement mechanism and a damping mechanism, wherein the vibration displacement mechanism is composed of a cylinder body and a piston with double isometric rods; the damping mechanism is composed of a damping valve body and valve cores which are in a staircase shape, and big valve cores and small valve cores are transferred by conic bodies. The piston with double isometric rods is fixed to the small ends of the valve cores, and the cylinder body is respectively communicated with the upper end and the lower end of the damping valve body. The automotive self-adapting vibration damper has the advantage of variable damping, and axial grooves and circumferential grooves are arranged under the conic bodies of the valve cores and are communicated with the conic bodies in order to strengthen the advantage. Each small valve core is provided with a radial hole, and each valve core is provided with an axial hole communicated with the radial hole.

Description

Automotive self-adapting surge damper

The present invention relates to a kind of vehicle damping device, especially automotive self-adapting surge damper.

Use at present the most general vibration damper to mainly contain two kinds of monotubular formula vibration damper and direct-acting shock absorbers, in the monotubular formula vibration damper oil gas two media is arranged, separate oil pocket and air cavity by floating piston, owing to easily causing the oil gas mixing that medium is become, sealing problem easily compresses, reduced damping function, therefore on rough road, control the poor effect of Vehicular vibration, the double barreled vibration damper adopts all-hydraulic damping, produce damping by the valve of working piston and the pressure valve throttling of oil storage chamber, oil mass changes cavity between inner core and urceolus in the oil pocket in order to regulate, and the common issue with that these two kinds of vibration dampers exist is that its damping size all can not be regulated.

Goal of the invention of the present invention is to provide a kind of automotive self-adapting surge damper that can improve the vehicle driving smoothness.

The present invention is based on vibration damper is subjected to vibrations should reduce damping when being compressed, in the hope of the transmission of minimizing impact, and when vibration damper is subjected to the vibrations elongation, strengthen the design philosophy of damping dissipates vibration energy, propose following technical proposals and realize goal of the invention, this technological scheme is as follows:

The present invention is made up of vibrations displacement mechanism and damping mechanism, the vibrations displacement mechanism is made up of cylinder body 1a and isometrical through-rod piston 2, damping mechanism is made up of damping valve body 1b and spool 3, spool 3 is the ladder spool, between the large and small spool by cone 12 transition, isometrical through-rod piston 2 fixes with the small end of spool 3, and cylinder body 1a communicates respectively with the upper and lower end of damping valve body 1b.

Compared with prior art, the present invention has following advantage:

1. owing to isometrical through-rod piston and spool among the present invention fix, distance, vibrations displacement light and heavy with load just increases and shortens with negative (positive displacement is defined as the stretching of vibrations spring) between vibration damper two joints, and the vibrations displacement mechanism passes to damping mechanism with the signal of this " increase " and " shortening " by the spool that fixes with its member, make damping mechanism therefore increase or reduce damping, thereby make it have adaptivity, and improved the smoothness of vehicle driving.

2. because the present invention just adopts hydraulic component to form, so its cost is only suitable with existing automobile telescopic shock absorber, so the present invention has the low advantage of cost.

In addition, adopt nut to be connected with being fixedly clamped of screw rod among the present invention between isometrical through-rod piston and the spool, this just makes the adjusting of vibration damper initial position simple and easy to do.

Fig. 1 is the embodiments of the invention structural representations.

Fig. 2 structural representation of the present invention that is vehicle when heavy duty or vibrations compression displacement are big.

Fig. 3 is structure C of the present invention-C schematic cross section.

Fig. 4 is the spool part sectioned view.

With reference to the accompanying drawings embodiment of the present invention being done one describes in detail:

The present invention is made up of vibrations displacement mechanism and damping mechanism, the vibrations displacement mechanism is made up of cylinder body 1a and isometrical through-rod piston 2, damping mechanism is made up of damping valve body 1b and spool 3, spool 3 is stepped spool, greatly, between the small valve core by cone 12 transition, isometrical through-rod piston 2 fixes with the small end of spool 3, this fixing can be adopted contiguous block 7, contiguous block 7 is enclosed within on the small end of spool 3, and contiguous block 7 is fixedly clamped by adjusting nut 4 and the screw thread that is located on this small end, on cylinder body 1a and the damping valve body 1b, the lower end communicates respectively, present embodiment is made integral body with cylinder body 1a and damping valve body 1b, in this integral body oil cylinder, establish a spacer 1c, should integral body separate and formation cylinder body 1a and damping valve body 1b, referring to Fig. 1, be respectively equipped with hydraulic fluid port A and hydraulic fluid port B in the upper and lower of spacer 1c, become damping for strengthening, cone 12 lower portion of the present invention on its spool 3 are provided with axial groove 8 and circumferential grooves 9, and axial groove 8 and circumferential grooves 9 communicate; On the small end spool of spool 3, be provided with radial hole 10, on spool 3 big end valve core end faces, be provided with axial center hole 11, radial hole 10 communicates with axial bore 11, below being positioned at spool 3 big end valve cores, be provided with the additional oil storage cylinder 13 that communicates with axial bore 11, when making, thereby inside oil pocket expansion and the extension of damping valve body 1b can be formed additional oil storage cylinder 13, when vehicle when slight vibrations take place in fully loaded or heavy duty (referring to Fig. 2), cone 12 on the spool 3 can be on hydraulic fluid port B, when following generation shakes, corresponding the diminishing of restriction passage of hydraulic fluid port B and cone 12, become big, make damping become big thereupon, diminish; When vehicle takes place than big bang, when the vibrations spring was in compression stroke, oil cylinder cavity of resorption fluid entered epicoele through hydraulic fluid port B, cone 12 restrictions, valve body cavity and hydraulic fluid port A, and the hydraulic damping effect is less; When restoring stroke, epicoele fluid footpath hydraulic fluid port A, valve body cavity, very little cone 12 restrictions or axial groove 8 and circumferential grooves 9 and hydraulic fluid port B enter cavity of resorption, because by very little restriction or pass through elongated channels and produce stronger hydraulic damping effect, when vehicle generation sharp pounding, when the length of spring compressed stroke, may make the bigger restriction of spool 3 cones 12, even the small valve core position of spool 3 communicates with hydraulic fluid port, thereby weaken damping function greatly, reduced the impact of ground in the face of vehicle; When restoring rebound stroke, can make radially, circumferential grooves and hydraulic fluid port B communicate, even make the big valve core position of spool 3 block hydraulic fluid port B, and force fluid to be pressed into additional oil storage cylinder 13 through radial hole 10 and axial bore 11, thereby produce strong damping function, make vibrations decay rapidly, in addition, the present invention can be by 5 pairs of oil pocket repairings of repairing mouth, 6 dustproof effect of dust-proof cover.

Claims

1. automotive self-adapting surge damper, form by vibrations displacement mechanism and damping mechanism, it is characterized in that shaking displacement mechanism is made up of cylinder body (1a) and isometrical through-rod piston (2), damping mechanism is made up of damping valve body (1b) and spool (3), spool (3) is the ladder spool, by cone (12) transition, isometrical through-rod piston (2) fixes with the small end of spool (3) between the big small valve core, and cylinder body (1a) communicates respectively with the upper and lower end portion of damping valve body (1b).

2. automotive self-adapting surge damper according to claim 1 is characterized in that cone (12) lower portion on the spool (3) is provided with axial groove (8) and circumferential grooves (9), and axial groove (8) communicates with circumferential grooves (9).

3. according to claim 1 and 2 described automotive self-adapting surge dampers, it is characterized in that on the small end spool of spool (3), being provided with radial hole (10), on big end valve core end face, also be provided with axial bore (11), radial hole (10) communicates with axial bore (11), is positioned at the big end valve core of spool (3) below and is provided with the additional oil storage cylinder (13) that communicates with axial bore (11).

4. automotive self-adapting surge damper according to claim 1, the fixedly employing contiguous block (7) that it is characterized in that the small end of isometrical through-rod piston (2) and spool (3), contiguous block (7) are enclosed within on the small end of spool (3) and by adjusting nut (4) and the screw thread that is located on this small end contiguous block (7) are fixedly clamped.