CN202560911U

CN202560911U - Vibration damper piston

Info

Publication number: CN202560911U
Application number: CN2012202462069U
Authority: CN
Inventors: 潘成群
Original assignee: Ningbo Qunxing Powder Metallurgy Co Ltd
Current assignee: Ningbo Qunxing Powder Metallurgy Co Ltd
Priority date: 2012-05-29
Filing date: 2012-05-29
Publication date: 2012-11-28
Anticipated expiration: 2022-05-29

Abstract

The utility model discloses a vibration damper piston comprising a piston body (1). The end face of the piston body (1) is provided with an outer-ring-shaped groove (2). An outer ring throttle hole (3) is arranged in the outer-ring-shaped groove (2). The vibration damper piston is characterized in that a plurality of protruding points (4) are arranged in the outer-ring-shaped groove (2), and upper end faces of the protruding points (4) are level to a piston valve line (5). The vibration damper piston prevents the valve line from sinking.

Description

Shock absorber piston

Technical field

The utility model relates to a kind of auto parts and components, specifically is the shock absorber piston that is used for the Motor Vehicle shockproof system.

Background technique

The main effect of vibration damper is when receiving vibrations relative movement to occur between the vehicle body of Motor Vehicle and vehicle bridge or vehicle body and the wheel; Piston in the vibration damper moves up and down; Hydraulic oil in the vibration damper is flowing in the shock absorber oil storage cylinder through different throttle orifices from the vibration damper clutch release slave cylinder repeatedly just; The intermolecular interior friction of friction between throttle orifice hole wall and the hydraulic oil and hydraulic oil at this moment forms damping force to vibrations; Make the Motor Vehicle vibration energy be converted into fluid heat energy, absorb to be dispersed in the atmosphere by vibration damper again and go.Existing motor vehicle damper comprises the vibration damper clutch release slave cylinder, is nested with the oil storage cylinder in the vibration damper clutch release slave cylinder outside, the shock absorber piston that matches with the vibration damper clutch release slave cylinder, is arranged on the vibration damper valve seat of clutch release slave cylinder bottom; Piston is provided with through spring spacing in the check valve sheet at piston end surface, when the exterior edge face of check valve sheet receives the pressure of hydraulic oil, and the interior edge face of check valve sheet and piston end surface sealing; The piston end surface of existing technology generally has the piston valve line; The piston valve line matches with check valve sheet, and is not enough below the shock absorber piston of existing technology exists: as because the hydraulic fluid pressure in the vibration damper is bigger, to make hydraulic oil bigger to the pressure of check valve sheet; So check valve sheet is bigger to the pressure of piston valve line; The pressure that receives is crossed conference makes the piston valve line recessed, makes the distortion of piston valve line, makes sealing unstable.

The model utility content

The utility model technical problem to be solved is, the shock absorber piston that the valve line can be not recessed is provided.

For solving the problems of the technologies described above, the shock absorber piston that the utility model provides comprises piston only; Piston only is provided with axis hole, and the end face of piston only is provided with outer ring annular groove, is provided with the outer ring throttle orifice in the outer ring annular groove; Also be provided with interior ring annular groove on the end face of piston only; Be provided with the inner ring throttle orifice in the interior ring annular groove, be provided with a plurality of salient points in the described outer ring annular groove, the upper-end surface of salient point is concordant with the piston valve line.

After adopting above structure, the utility model compared with prior art has following advantage:

When check valve sheet received pressure and the valve line close-fitting sealing of hydraulic oil, salient point can play a supportive role to check valve sheet, avoids the valve line recessed, and the piston valve line can be out of shape, and made sealing stable.

As improvement, described salient point is 4 and circumferentially evenly distributes that 4 salient points evenly distribute, and make the salient point support force more even, make to support firmly.

Description of drawings

Fig. 1 is the sectional structure schematic representation of the utility model shock absorber piston;

Fig. 2 is that the A-A of Fig. 1 is to view;

Fig. 3 be among Fig. 1 B-B to view.

Wherein, 1, piston only; 2, outer ring annular groove; 3, outer ring throttle orifice; 4, salient point.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail.

Structural representation by Fig. 1, Fig. 2, the utility model shock absorber piston shown in Figure 3 can be known; It comprises piston only 1, and piston only 1 is provided with axis hole, and axis hole is one to be axially set in the through hole at piston only 1 center; The end face of piston only 1 is provided with outer ring annular groove 2; Be provided with outer ring throttle orifice 3 in the outer ring annular groove 2, also be provided with interior ring annular groove on the end face of piston only 1, be provided with the inner ring throttle orifice in the interior ring annular groove; Be provided with a plurality of salient points 4 in the described outer ring annular groove 2, the upper-end surface of salient point 4 is concordant with piston valve line 5.

Described salient point 4 is 4 and circumferentially evenly distributes.

Below only use preferable instance with regard to the utility model and made explanation, but can not be interpreted as it is the restriction to claim, the structure of the utility model can have other variations, is not limited to said structure.In a word, the various variations of being done in the protection domain of all independent claims at the utility model are all in the protection domain at the utility model.

Claims

1. shock absorber piston; Comprise piston only (1); The end face of piston only (1) is provided with outer ring annular groove (2); Be provided with outer ring throttle orifice (3) in the outer ring annular groove (2), it is characterized in that: be provided with a plurality of salient points (4) in the described outer ring annular groove (2), the upper-end surface of salient point (4) is concordant with piston valve line (5).

2. shock absorber piston according to claim 1 is characterized in that: described salient point (4) is 4 and circumferentially evenly distributes.