CN203098682U - Wheel-brake cylinder with spring - Google Patents

Abstract

The utility model discloses a wheel-brake cylinder with a spring. The wheel-brake cylinder comprises a cylinder body, a cavity is arranged in the cylinder body, a plurality of through holes are arranged on the side wall of the cylinder body, a bleeder screw and a bleeder cap are mounted in one through hole, a dust-proof plug is mounted in another through hole, the through holes are communicated with the cavity, a group of symmetric pistons are slidably mounted in the cavity, the spring is connected onto opposite end faces of the pistons, a plurality of slots are arranged on the inner wall of the cavity, strip-type ribs corresponding to the slots are arranged on the side walls of the pistons and slidably matched with the slots, annular grooves are arranged on the pistons, leather rings in pressure contact with the inner wall of the cavity are mounted on the pistons, openings of the pistons and the cavity are sealed by dust-proof covers, and a cavity is arranged between the symmetric pistons. The wheel-brake cylinder is simple in structure, the cylinder body is better in sliding performance by the design of the slots and the strip-type ribs, and stability is ensured.

Description

The wheel cylinder of band spring

Technical field

The utility model relates to the braking device field of automobile, and concrete is a kind of wheel cylinder with spring.

Background technique

Wheel cylinder generally relies on pressurized air or oil to enter master cylinder, and promotion piston etc. overlap base apparatus and play braking action, are parts of automotive brake, are used to produce the power that hinders vehicle movement or movement tendency, i.e. braking force.

In the working procedure, if the oil pressure or the air pressure of wheel cylinder inner chamber are excessive, will cause piston moment of wheel cylinder inside to be pushed out and to push back, piston easily takes place during release to fly out, collision between the piston having taken place when pushing back, not only caused loss, also can bring potential safety hazard, and the slides within structure of wheel cylinder is extremely important, can have influence on its braking effect.

The model utility content

It is a kind of simple in structure that the utility model provides, and the wheelcylinder piston sliding capability is good, the wheel cylinder of the band spring of being convenient to safeguard.

The technical solution of the utility model:

The wheel cylinder of band spring, comprise cylinder body, be provided with cavity in the cylinder body, it is characterized in that: have a plurality of through holes on the sidewall of described cylinder body, one of them is equipped with bleed screw and venting cap, another is equipped with dust plug, and a plurality of through holes are communicated with described cavity, be slidingly fitted with symmetrically arranged one group of piston in the cavity, be connected with spring on the opposing end faces between the piston, the inwall of described cavity is provided with some bar-shaped troughs, and the sidewall of piston is provided with the bar shaped muscle corresponding with bar-shaped trough and is slidingly matched; Have circular groove on the piston and the apron that contacts with cavity inner wall pressure is installed, the oral area of piston and cavity seals by dust-proof cover.

The wheel cylinder of described band spring is characterized in that: the part between described symmetrically arranged one group of piston is a cavity.

Advantage of the present utility model:

The utility model is simple in structure, by the design of bar-shaped trough and bar shaped muscle, makes the sliding capability of cylinder body better, and has guaranteed stability.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a side sectional view of the present utility model.

Embodiment

Referring to accompanying drawing, the wheel cylinder of band spring, comprise cylinder body 1, be provided with cavity in the cylinder body 1, have a plurality of through holes on the sidewall of cylinder body 1, one of them is equipped with venting spiral shell 2 nails and venting cap 3, another is equipped with dust plug 8, and a plurality of through holes are communicated with described cavity, be slidingly fitted with symmetrically arranged one group of piston 4 in the cavity, be connected with spring 9 on the opposing end faces between the piston, the inwall of cavity is provided with some bar-shaped troughs, and the sidewall of piston 4 is provided with the bar shaped muscle 5 corresponding with bar-shaped trough and is slidingly matched; Have circular groove on the piston 4 and the apron 6 that contacts with cavity inner wall pressure is installed, the oral area of piston 4 and cavity is by dust-proof cover 7 sealings, and the part between symmetrically arranged one group of piston 4 is a cavity.

Claims (2)

1. be with the wheel cylinder of spring, comprise cylinder body, be provided with cavity in the cylinder body, it is characterized in that: have a plurality of through holes on the sidewall of described cylinder body, one of them is equipped with bleed screw and venting cap, another is equipped with dust plug, and a plurality of through holes are communicated with described cavity, be slidingly fitted with symmetrically arranged one group of piston in the cavity, be connected with spring on the opposing end faces between the piston, the inwall of described cavity is provided with some bar-shaped troughs, and the sidewall of piston is provided with the bar shaped muscle corresponding with bar-shaped trough and is slidingly matched; Have circular groove on the piston and the apron that contacts with cavity inner wall pressure is installed, the oral area of piston and cavity seals by dust-proof cover.

2. the wheel cylinder of band spring according to claim 1 is characterized in that: the part between described symmetrically arranged one group of piston is a cavity.

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