CN201513505U

CN201513505U - Automotive shock absorber piston

Info

Publication number: CN201513505U
Application number: CN200920196984XU
Authority: CN
Inventors: 邬赛尧
Original assignee: NINGBO JINHENG AUTO PARTS (YONGHENG PM) CO Ltd
Current assignee: NINGBO JINHENG AUTO PARTS (YONGHENG PM) CO Ltd
Priority date: 2009-09-19
Filing date: 2009-09-19
Publication date: 2010-06-23
Anticipated expiration: 2019-09-19

Abstract

The utility model discloses an automotive shock absorber piston, which comprises a piston body (1), the piston body (1) is provided with a plurality of axially communicated throttling orifices (3), both end surfaces of the piston body (1) are provided with convex and concave oil passages which are alternately arranged and staggerly opposite to each other, and the sunken parts of both ends surfaces of the piston body (1) are provided with a plurality of axially projected projections (2). The piston can ensure that a piston valve cannot be easily deformed and that a shock absorber has stable damp force and a long service life.

Description

The vehicular shock absorber piston

Technical field

The utility model relates to automobile hydraulic vibration damper field, specifically be a kind of vehicular shock absorber piston.

Background technique

The main effect of automobile absorber is when being subjected to vibration relative movement to occur between vehicle body and vehicle bridge or wheel and the vehicle body, piston in the vibration damper moves up and down, and the pressure oil in the vibration damper just flows in the shock absorber oil storage cylinder through different throttle orifices from a vibration damper clutch release slave cylinder repeatedly.The intermolecular interior friction of friction between hole wall and the hydraulic oil and hydraulic oil at this moment forms damping force to vibration, makes automobile vibrational energy be converted into fluid heat energy, is dispersed in the atmosphere by the vibration damper absorption again.Existing automobile absorber, comprise the vibration damper clutch release slave cylinder, be nested with at oil storage cylinder, the shock absorber piston that matches with the vibration damper clutch release slave cylinder in the vibration damper clutch release slave cylinder outside and the vibration damper valve seat that is arranged on the clutch release slave cylinder bottom, the bottom surface of described shock absorber piston is provided with the notch and the relative hydraulic oil channel that misplaces at interval with the top, is provided with the center hole that piston rod is installed at the center of piston only; On piston only, also be provided with the throttle orifice that axially communicates, be provided with valve block at the bottom and the top of piston only; The valve block at described bottom and top all is socketed on the piston rod, and misplacing mutually by piston only two ends valve block and throttle orifice cooperates the mistake oil mass of regulating throttle orifice, to reach the purpose of vibration damper damping.

The vehicular shock absorber piston of prior art, when hydraulic oil impact piston valve block, the piston valve sector-meeting produces vibrations by a relatively large margin, and particularly under the situation about sharply shaking in the automobile traveling process, the hydraulic oil of high-speed motion is bigger to the impact force of piston valve block; Use can make the piston valve block deform for a long time, and the piston valve sector-meeting after the distortion increases the mistake oil mass of throttle orifice, thereby makes the damping force instability of vibration damper, can shorten the working life of vibration damper.

The model utility content

The technical problems to be solved in the utility model is, overcomes the defective of above prior art, provides a kind of and makes the piston valve block be difficult for distortion, makes that damping force of vibration damper is stable, the vehicular shock absorber piston of long service life.

Technical solution of the present utility model is, a kind of vehicular shock absorber piston with following structure is provided: it comprises piston only, described piston only is provided with the throttle orifice that axially communicates, be provided with the fluid passage that notch is alternate and misplace relative on the both ends of the surface of described piston only, the indentation of described piston only both ends of the surface is provided with the projection of a plurality of axial evaginations.

After adopting above structure, the utility model vehicular shock absorber piston compared with prior art has the following advantages: adopt the projection that is provided with a plurality of axial evaginations in the indentation of piston only both ends of the surface.High speed impact lower piston valve block at hydraulic oil has obtained buffering, makes the piston valve block be difficult for distortion, has reduced the leakage of hydraulic oil, thereby makes the damping force of vibration damper stable, has prolonged the working life of vehicular shock absorber.

Description of drawings

Fig. 1 is the structural representation of facing of the utility model vehicular shock absorber piston.

Fig. 2 is the sectional structure schematic representation of the utility model vehicular shock absorber piston A-A face in Fig. 1.

Fig. 3 is the backsight structural representation of the utility model vehicular shock absorber piston.

As shown in the figure:

1, piston only, 2, projection, 3, throttle orifice.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As Fig. 1, Fig. 2, shown in Figure 3.

The utility model vehicular shock absorber piston, it comprises piston only 1, described piston only 1 is provided with the throttle orifice 3 that axially communicates, be provided with the fluid passage that notch is alternate and misplace relative on the both ends of the surface of described piston only 1, the indentation of described piston only 1 both ends of the surface is provided with the projection 2 of a plurality of axial evaginations.

Be provided with the fluid passage that notch is alternate and misplace relative on the both ends of the surface of described piston only 1, in other words, the corresponding other end of recess fluid passage of an end face of described piston only 1 is a protuberance fluid passage, and the corresponding other end of protuberance fluid passage of an end face of piston only 1 is a recess fluid passage

Described protruding 2 height is a little less than two end faces of piston only 1.

Claims

1. vehicular shock absorber piston, it comprises piston only (1), described piston only (1) is provided with a plurality of throttle orifices that axially communicate (3), be provided with the fluid passage that notch is alternate and misplace relative on the both ends of the surface of described piston only (1), it is characterized in that: the indentation of described piston only (1) both ends of the surface is provided with the projection (2) of a plurality of axial evaginations.

2. valve seat for auto shock-absorber according to claim 1 is characterized in that: the height of described projection (2) is a little less than two end faces of piston only (1).