CN201484401U

CN201484401U - Automobile brake

Info

Publication number: CN201484401U
Application number: CN2009201389312U
Authority: CN
Inventors: 柯伟; 程炳根; 郑占筑; 林辉跃; 赖兴华
Original assignee: XIAMEN YONGYU MECHAICAL INDUSTRY Co Ltd
Current assignee: XIAMEN YONGYU MECHAICAL INDUSTRY Co Ltd
Priority date: 2009-06-09
Filing date: 2009-06-09
Publication date: 2010-05-26
Anticipated expiration: 2019-06-09

Abstract

The utility model discloses an automobile brake, which mainly comprises an oil cup, a brake master cylinder, a rapid filling valve, a second return spring, a spring supporting seat, a second piston, a first return spring, a first piton and an auxiliary leather ring. As the rapid filling valve for supplementing oil is sleeved inside an oil hole at the lower end of the oil cup and a first liquid supply cavity is increased by a different diameter (D>d), brake oil can rapidly reach a first pressure cavity and enable the first pressure cavity to rapidly create pressure because of D>d when the first piston is under the action of force, thereby enabling front wheels to be braked in advance, improving brake sensitivity and accordingly being capable of preventing rear wheels from being braked in advance to cause an automobile to skid.

Description

Car brake

Technical field

The utility model relates to a kind of automotive parts, particularly relates to a kind of car brake.

Background technology

Car brake is the vitals of automobile, is the key that guarantees traffic safety.Commonly use the car brake of forward drive vehicle, when brake, trailing wheel can be braked in advance, causes trailing wheel to shift to an earlier date locking, thereby causes automobile to skid, and the brake sensitivity is not high.

The utility model content

The purpose of this utility model is to provide a kind of brake highly sensitive car brake, in when brake, makes to drive front-wheel and brake in advance, can effectively prevent from can brake in advance because of trailing wheel to cause the automobile skidding.

For achieving the above object, technical solution of the present utility model is:

The utility model is a kind of car brake, and it mainly is made up of lubricating cup, master brake cylinder, second retracing spring, spring supporting seat, second piston, first retracing spring, first piston and auxiliary apron; Described lubricating cup lower end oilhole is communicated with the radial direction through hole on the master brake cylinder sidewall; Described second retracing spring, spring supporting seat, second piston, first retracing spring, first piston are nested with in regular turn in the longitudinal hole of master brake cylinder, in second piston, constitute second pressure chamber between side steps step surface and the master brake cylinder inner end wall, outside second piston, constitute first pressure chamber between the inboard side steps step surface of side steps step surface and first piston, apron is assisted in the two side steps step surface sockets of second piston, forms second fuel supply chamber between the auxiliary apron of these both sides, the second piston step section outside face and the master brake cylinder inwall; On the described second retracing spring socket spring supporting seat and two ends lean respectively in the master brake cylinder inner end wall and second piston on the side steps step surface; Described first retracing spring is socketed on second piston and two ends lean respectively on the inboard side steps step surface of side steps step surface and first piston outside second piston; It also comprises a quick charge valve, and this quick charge valve is nested with in the oilhole of lubricating cup lower end.

Described quick charge valve mainly is made up of the first fuel tap seat, the second fuel tap seat, the 3rd fuel tap seat, rubber cushion, spring; The described second fuel tap seat is a hollow ladder cylinder, described spring, the 3rd fuel tap seat, the first fuel tap seat are nested with the hollow ladder inner chamber at the second fuel tap seat in regular turn, and the two ends of spring lean respectively in the upper surface of the second fuel tap seat inner chamber top end wall and the 3rd fuel tap seat and with the 3rd fuel tap seat and lean in the first fuel tap seat centre hole; Described rubber cushion is installed between the first flared flange in fuel tap seat bottom and the second fuel tap seat lower surface.

Described first piston is a ladder cylinder, longitudinally offers annular deep gouge on its cascaded surface; On the master brake cylinder open end, longitudinally offer annular deep gouge, between this annular deep gouge and master brake cylinder longitudinal hole, form annular lip, annular deep gouge on the described first piston slidably is socketed on the annular lip on the master brake cylinder open end, and annular deep gouge and the annular deep gouge on the master brake cylinder on the first piston constitute the first feed flow chamber.

Described on the master brake cylinder open end diameter of annular deep gouge greater than the diameter of master brake cylinder longitudinal hole.

After adopting such scheme, because the utility model has been nested with a quick charge valve and has carried out repairing in the oilhole of lubricating cup lower end, the first feed flow chamber increases a reducing (D＞d), under the effect of first piston in power, because of D＞d, brake solution can arrive first pressure chamber fast, make the quick build-up pressure of first pressure chamber, thereby front-wheel is braked in advance, improved the brake sensitivity, cause the automobile skidding thereby can effectively prevent to brake in advance because of trailing wheel.

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

Description of drawings

Fig. 1 is a three-dimensional exploded view of the present utility model;

Fig. 2 is a cutaway view of the present utility model;

Fig. 3 is the cutaway view of the quick charge valve of the utility model.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model is a kind of car brake, and it mainly is made up of lubricating cup 1, quick charge valve 2, master brake cylinder 3, second retracing spring 4, spring supporting seat 5, second piston 6, first retracing spring 7, first piston 8 and auxiliary apron 9.

The radial direction through hole 31 that described lubricating cup 1 lower end oilhole 11 is communicated with on master brake cylinder 3 sidewalls, this radial direction through hole 31 connects with the longitudinal hole 32 of master brake cylinder 3; Described quick charge valve 2 is nested with in lubricating cup 1 lower end oilhole 11.Described second retracing spring 4, auxiliary apron 9, spring supporting seat 5, second piston 6, first retracing spring 7, first piston 8 is nested with in regular turn in the longitudinal hole 32 of master brake cylinder 3, in second piston 6, constitute second pressure chamber 10 between side steps step surface 61 and master brake cylinder 3 inner end wall 33, outside second piston 6, constitute first pressure chamber 20 between the inboard side steps step surface 81 of side steps step surface 62 and

first piston

8,6 liang of side steps step surfaces 61 of second piston, the auxiliary apron 9 of socket on 62, the auxiliary apron 9 of these both sides, form second fuel supply chamber 30 between second piston, 6 step section outside faces and master brake cylinder 3 inwalls; On described second retracing spring, the 4 socket spring supporting seats 5 and two ends lean respectively in master brake cylinder 3 inner end wall 33 and second piston 6 on the side steps step surface 61; Described first retracing spring 7 is socketed on second piston 6 and two ends lean respectively on the inboard side steps step surface 81 of side steps step surface 62 and first piston 8 outside second piston 6.

Described first piston 8 is a ladder cylinder, longitudinally offers annular deep gouge 82 on its cascaded surface; On master brake cylinder 3 open ends, longitudinally offer annular deep gouge 34, between this annular deep gouge 34 and master brake cylinder 3 longitudinal holes 32, form annular lip 35, annular deep gouge 82 on the described first piston 8 slidably is socketed on the annular lip 35 on master brake cylinder 3 open ends, and the annular deep gouge 82 on the first piston 8 constitutes the first feed flow chamber 40 with annular deep gouge 34 on the master brake cylinder 3.Described on master brake cylinder 3 open ends the diameter D of annular deep gouge 34 greater than the diameter d of master brake cylinder 3 longitudinal holes 32.

The principle of work of utility model:

During brake, apply power to stretcher, utilize lever principle, by vacuum booster power is amplified, make master brake cylinder 3 obtain bigger propulsion source, utilize hydraulic action P=F/S, in order to improve the sensitivity of brake, at the liquid feed device place, increase quick charge valve 2 and carry out repairing, the first feed flow chamber 40 increases a reducing, and (D＞d) is under the effect of first piston 8 in power, because of D＞d, brake solution can arrive first pressure chamber 20 fast, makes first pressure chamber, 20 quick build-up pressures, thereby front-wheel is braked in advance, improve the brake sensitivity, cause the automobile skidding thereby can effectively prevent to brake in advance because of trailing wheel; When removing brake, during the piston fast return, the feed flow chamber produces negative pressure, and charge valve 2 is under the barometric pressure effect fast, and the very first time makes first, second

feed flow chamber

30,40 be full of brake solution, for brake next time provides hydraulic medium.

As shown in Figure 3, described quick charge valve 2 mainly is made up of the first fuel tap seat 21, the second fuel tap seat 22, the 3rd fuel tap seat 23, rubber cushion 24, spring 25.The described second fuel tap seat 22 is a hollow ladder cylinder, described spring 25, the 3rd fuel tap seat 23, the first fuel tap seat 21 are nested with the hollow ladder inner chamber at the second fuel tap seat 22 in regular turn, and the two ends of spring 25 lean respectively in the upper surface of the second fuel tap seat, 22 inner chamber top end walls and the 3rd fuel tap seat 23 and with the 3rd fuel tap seat 23 and lean in the first fuel tap seat, 21 centre holes 211; Described rubber cushion 24 is installed between flared flange 212 in the first fuel tap seat, 21 bottoms and the second fuel tap seat, 22 lower surfaces.

Quick charge valve 2 principle of work:

When first piston 8 returned, when the first feed flow chamber 40 was negative pressure, charge valve 2 passed through the 18xd1 hole to the first feed flow chamber, 40 quick feed flows fast; When first piston 8 forward (to the right) motion produce under the effect of pressure, the pressure in the first feed flow chamber 40 is greater than barometric pressure, rubber cushion 24 is subjected to upward force, make rubber cushion 24 tightly push down the second fuel tap seat 22, the unnecessary oil of stopping, by V-slot 221 behind centre hole 211, overcome spring 25 pressure after, the 3rd fuel tap seat 23 is upwards lifted, and brake solution flows back to lubricating cup 1.

Claims

1. car brake, it mainly is made up of lubricating cup, master brake cylinder, second retracing spring, spring supporting seat, second piston, first retracing spring, first piston and auxiliary apron; Described lubricating cup lower end oilhole is communicated with the radial direction through hole on the master brake cylinder sidewall; Described second retracing spring, spring supporting seat, second piston, first retracing spring, first piston are nested with in regular turn in the longitudinal hole of master brake cylinder, in second piston, constitute second pressure chamber between side steps step surface and the master brake cylinder inner end wall, outside second piston, constitute first pressure chamber between the inboard side steps step surface of side steps step surface and first piston, apron is assisted in the two side steps step surface sockets of second piston, forms second fuel supply chamber between the auxiliary apron of these both sides, the second piston step section outside face and the master brake cylinder inwall; On the described second retracing spring socket spring supporting seat and two ends lean respectively in the master brake cylinder inner end wall and second piston on the side steps step surface; Described first retracing spring is socketed on second piston and two ends lean respectively on the inboard side steps step surface of side steps step surface and first piston outside second piston; It is characterized in that: it also comprises a quick charge valve, and this quick charge valve is nested with in the oilhole of lubricating cup lower end.

2. car brake according to claim 1 is characterized in that: described quick charge valve mainly is made up of the first fuel tap seat, the second fuel tap seat, the 3rd fuel tap seat, rubber cushion, spring; The described second fuel tap seat is a hollow ladder cylinder, described spring, the 3rd fuel tap seat, the first fuel tap seat are nested with the hollow ladder inner chamber at the second fuel tap seat in regular turn, and the two ends of spring lean respectively in the upper surface of the second fuel tap seat inner chamber top end wall and the 3rd fuel tap seat and with the 3rd fuel tap seat and lean in the first fuel tap seat centre hole; Described rubber cushion is installed between the first flared flange in fuel tap seat bottom and the second fuel tap seat lower surface.

3. car brake according to claim 1 is characterized in that: described first piston is a ladder cylinder, longitudinally offers annular deep gouge on its cascaded surface; On the master brake cylinder open end, longitudinally offer annular deep gouge, between this annular deep gouge and master brake cylinder longitudinal hole, form annular lip, annular deep gouge on the described first piston slidably is socketed on the annular lip on the master brake cylinder open end, and annular deep gouge and the annular deep gouge on the master brake cylinder on the first piston constitute the first feed flow chamber.

4. car brake according to claim 1 is characterized in that: described on the master brake cylinder open end diameter of annular deep gouge greater than the diameter of master brake cylinder longitudinal hole.