CN211196167U

CN211196167U - Brake master cylinder assembly with double one-way valves

Info

Publication number: CN211196167U
Application number: CN201922462128.0U
Authority: CN
Inventors: 康伟铭; 汤宗兵
Original assignee: Wuhu Juda Auto Parts Co ltd
Current assignee: Wuhu Juda Auto Parts Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-07
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a take two check valve brake master cylinder assemblies relates to the technical field of automobile parts, including brake master cylinder, piston one and piston two, brake master cylinder's inside is equipped with towards left open-ended cylindrical cavity, brake master cylinder's outer wall is equipped with the hydraulic fluid port that advances of L type by the top of right-hand member, brake master cylinder's outer wall is equipped with back hydraulic fluid port by the top on the left side, brake master cylinder's outer wall is equipped with preceding oil-out in the left side of oil inlet in the front, brake master cylinder's outer wall is equipped with the back oil-out on the right side of back oil inlet, advance the hydraulic fluid port, back hydraulic fluid port, preceding oil-out and back oil-out all link up with the cavity each other, brake master cylinder's outer wall is equipped with the installation ear of rhombus by the left side, brake master cylinder's cavity is by the left side and is installed the hole retaining ring, piston one and piston two are by the right respectively and lean on the left side locate in the inboard cavity of hole retaining ring the.

Description

Brake master cylinder assembly with double one-way valves

Technical Field

The utility model relates to a technical field of automobile parts, concretely relates to take two check valve brake master cylinder assemblies.

Background

The brake master cylinder is also called as a hydraulic brake master cylinder and is a power source of a service brake system. The braking force is derived from the pedal force applied to the brake pedal by the driver and the vacuum level (vacuum assist) of the engine intake manifold, which is the primary power source for the master cylinder. The main function of the master cylinder is to convert the mechanical force applied by the driver on the brake pedal and the force of the vacuum booster into brake oil pressure, and to send the brake fluid with a certain pressure to the brake cylinders (wheel cylinders) of each wheel through the brake pipeline, and then to convert the brake fluid into wheel braking force. The conventional brake master cylinder needs to process a compensation hole with the diameter of 0.7mm on a cylinder body, and the filling and discharging work of brake oil in the cylinder body can be accelerated by arranging the compensation hole, but the processing technology difficulty of the small hole is extremely high, and the quality is difficult to control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take two check valve brake master cylinder assemblies to solve the above-mentioned defect that leads to among the prior art.

The brake master cylinder assembly with the double one-way valves comprises a brake master cylinder, a first piston and a second piston, wherein the brake master cylinder is cylindrical and is arranged in a left-right direction, a cylindrical cavity with an opening towards the left side is formed in the brake master cylinder, an L-type forward oil port is formed in the outer wall of the brake master cylinder above the right end, an forward oil pipe is arranged at the front oil inlet, a backward oil port is formed in the outer wall of the brake master cylinder above the left side, a backward oil pipe is arranged at the back oil inlet, a forward oil outlet is formed in the outer wall of the brake master cylinder on the left side of the front oil inlet, a forward oil pipe is arranged at the back oil inlet, a backward oil pipe is arranged at the back oil outlet, the forward oil port, the backward oil port, the forward oil outlet and the backward oil pipe are communicated with the cavity of the brake master cylinder, a rhombic mounting lug is arranged on the outer wall of the brake master cylinder on the left side, a check ring for holes is arranged in the cavity of the back oil inlet on the left side, a first piston and a second piston are respectively arranged in the cavity inside of the check ring for the right and left check ring for the left check ring, a one-way valve spring sleeve is provided with a spring seat, a one-way valve spring seat, a left-way valve spring seat is arranged between the left-way valve spring seat, a left-right-way valve spring sleeve and a left-way valve spring seat, a left-way valve spring seat is provided with a left-way spring seat, a left-way valve spring seat, two-way valve spring is provided with a left-way spring, a left-way spring seat, two-way spring seat, a left-way.

Preferably, the front oil outlet pipe and the rear oil outlet pipe are respectively provided with a residual valve I and a residual valve II.

Preferably, the forward oil pipe, the backward oil pipe, the first residual valve and the second residual valve are plugged with rubber plugs.

Preferably, a rubber bellows type dust cover is attached to an opening of the master cylinder.

Preferably, a push rod groove is machined in the left end face of the second piston.

Preferably, the brake master cylinder is cast with the forward oil pipe, the rear oil pipe, the front oil outlet pipe and the rear oil outlet pipe in a one-piece manner.

The utility model has the advantages that: the rod piece pushes the piston II to move towards the right from the groove of the push rod to drive the check valve sealing ring on the left side of the piston I to block the oil through hole, and the check valve sealing ring on the right side of the piston I to block the oil inlet, namely, the two check valves are closed, high-pressure environments can be established on two sides of the piston I, and brake oil can be discharged from the front oil outlet pipe and the rear oil outlet pipe; when the push rod is removed, the first piston returns to the initial position under the elastic force action of the return springs on the two sides, the check valve sealing rings on the two sides are separated from contact with the oil through hole and the oil advancing port under the elastic force action of the check valve springs, namely the check valve is opened, low-pressure environments can be established on the two sides of the first piston, and brake oil can enter a cavity of the brake master cylinder from the front oil inlet and the oil advancing port. The problem that the filling and discharging work of the brake oil in the cylinder body can be quickly realized only by processing a compensation hole with phi of 0.7mm on the cylinder body in the traditional brake master cylinder is avoided.

Drawings

Fig. 1 is a schematic view of the overall overlook structure of the present invention.

Fig. 2 is a schematic structural diagram of the whole front view of the present invention.

Fig. 3 is a schematic structural diagram of the whole side view of the present invention.

Fig. 4 is a schematic structural view of a position of the piston in fig. 2.

Wherein: 1-a master brake cylinder; 101-a front oil inlet; 102-rear oil inlet; 103-front oil outlet; 104-rear oil outlet; 105-mounting ears; 2-advancing the oil pipe; 3-feeding an oil pipe; 4-front oil outlet pipe; 5-rear oil outlet pipe; 6-residual valve one; 7-residual valve two; 8-retainer ring for hole; 9-a dust cover; 10-a piston one; 11-O-shaped ring I; 12-one-way valve core; 13-spring seats; 14-a return spring; 15-one-way valve body; 16-one-way valve sealing ring; 17-a one-way valve spring; 18-piston two; 1801-pushrod recess; 1802-oil through hole; 19-O-shaped ring II; 20-O-shaped ring III; 21-plug head.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 4, a brake master cylinder assembly with a double one-way valve comprises a brake master cylinder 1, a piston I10 and a piston II 18, wherein the brake master cylinder 1 is cylindrical and arranged in a left-right direction, a cylindrical cavity opened towards the left is formed in the brake master cylinder 1, an L-shaped forward oil port 101 is formed in the upper portion, close to the right end, of the outer wall of the brake master cylinder 1, an forward oil pipe 2 is arranged at the position of a forward oil inlet 101, a rear oil inlet 102 is formed in the upper portion, close to the left side, of the outer wall of the brake master cylinder 1, a rear oil inlet 102 is formed in the outer wall of the front oil inlet 101, a rear oil outlet pipe 5 is formed in the position of the rear oil inlet 102, the forward oil outlet 101, the rear oil outlet 102, the rear oil pipe 5 are formed in the position of the rear oil inlet 102, the forward oil outlet 101, the rear oil outlet 103 and the rear oil outlet 104 are communicated with a cavity of the brake master cylinder 1, a rhombic installation lug 105 is arranged in the outer wall of the master cylinder 1, a cavity of the brake master cylinder 1, a piston 10 is provided with a piston 10, a piston 10 is arranged in a piston spring seat 12, a piston 10, a piston spring seat 16 is formed in the middle of a left-right-left-right cylinder 10, a piston spring seat O-left-right-left-right single-right cylinder 10, a piston spring seat O-left-right-left-right rotary-type piston spring seat O-type piston spring seat 10, a piston spring seat O-type piston spring seat 10 is formed piston 10, two-type piston spring seat 10, two-left-right-left-right-left.

In this embodiment, the front outlet pipe 4 and the rear outlet pipe 5 are provided with a residual valve one 6 and a residual valve two 7, respectively. The residual valve is located between the cavity of the master cylinder 1 and the brake line. In the process of realizing braking, the brake fluid in the master cylinder 1 flows through the small holes on the residual valve and is discharged to a pipeline under the action of the pedal force, braking is realized through the transmission of the brake fluid pressure by the master cylinder, after the braking is released, part of the brake fluid flows back to the cavity of the master cylinder 1, the pressure of the brake fluid in the cavity of the master cylinder 1 is zero, and a certain value of residual pressure can still be kept in the cavity of the master cylinder 1 and the brake pipeline under the action of the residual valve. The two aspects of the residual valve act to substantially improve the braking performance of the vehicle.

In this embodiment, the forward oil pipe 2, the backward oil pipe 3, the first residual valve 6, and the second residual valve 7 are plugged with rubber plugs 21. The plug 21 can prevent the residual oil in the master cylinder 1 from leaking when the master cylinder assembly is not used, and can reduce the impurities from entering the cavity of the master cylinder 1 from the corresponding hole.

In this embodiment, a rubber bellows type dust cover 9 is attached to an opening of the master cylinder 1. The dust cover 9 is arranged, so that too many impurities entering the cavity of the brake master cylinder 1 in the use process of the brake master cylinder assembly can be effectively reduced.

In this embodiment, a push rod groove 1801 is formed in a left end surface of the second piston 18. The push rod groove 1801 is arranged to facilitate the positioning and putting in of the push rod.

In this embodiment, the master cylinder 1 is cast as one piece with the forward oil pipe 2, the rear oil pipe 3, the forward oil pipe 4, and the rear oil pipe 5.

The utility model discloses in, this kind of theory of operation and working process of taking two check valve brake master cylinder assemblies:

the rod piece pushes the second piston 18 to move towards the right from the push rod groove 1801, the left check valve sealing ring 16 on the first piston 10 is driven to block the oil through hole 1802, the right check valve sealing ring 16 on the first piston 10 is driven to block the oil inlet 101, namely, two check valves are closed, high-pressure environments are established on two sides of the first piston 10, and brake oil is discharged from the front oil outlet pipe 4 and the rear oil outlet pipe 5; when the push rod is removed, the piston I10 returns to the initial position under the elastic force of the return springs 14 at both sides, and the check valve sealing rings 16 at both sides are separated from the contact with the oil through hole 1802 and the forward oil port 101 under the elastic force of the check valve springs 17, that is, the check valve is opened, a low-pressure environment is established at both sides of the piston I10, and the brake oil is introduced into the cavity of the master cylinder 1 from the forward oil port 101 and the rearward oil port 102. The problem that the filling and discharging work of the brake oil in the cylinder body can be quickly realized only by processing a compensation hole with phi of 0.7mm on the cylinder body in the traditional brake master cylinder is avoided.

The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The brake master cylinder assembly with the double one-way valves is characterized by comprising a brake master cylinder (1), a piston I (10) and a piston II (18), wherein the brake master cylinder (1) is cylindrical and arranged in a left-right direction, a cylindrical cavity with an opening towards the left is formed in the brake master cylinder (1), an L-shaped forward oil opening (101) is formed in the upper portion, close to the right end, of the outer wall of the brake master cylinder (1), a forward oil pipe (2) is arranged at a front oil inlet (101), a rear oil opening (102) is formed in the upper portion, close to the left side, of the outer wall of the brake master cylinder (1), a rear oil pipe (3) is arranged at a rear oil inlet (102), a front oil outlet (103) is formed in the left side of a front oil inlet (101), a rear oil outlet (104) is formed in the right side of a rear oil inlet (102), a rear oil outlet (5) is formed in the rear oil outlet (104), a rear oil outlet (5) is formed in the middle portion, a left-right-side oil outlet sleeve (10) of the rear oil inlet (10), a spring seat (10) is formed by a spring seat (10), a spring seat (10) is arranged between a left-right-shaped spring seat-side of a single-shaped spring seat (10), a spring seat (10) and a spring seat (10), a spring seat (10) is formed by a spring seat (10), a spring seat (10) is arranged in a spring seat (10), a spring seat (10) is formed by a spring seat (10) is arranged in a spring seat (10), a spring seat (10) is arranged between the middle portion, a spring seat (10) is formed by a spring seat (10) and a spring seat (10), a spring seat (10) is formed by a spring seat (10), a spring seat (10) is arranged in a spring seat (10), a.

2. The brake master cylinder assembly with the double one-way valve according to claim 1, wherein: and a first residual valve (6) and a second residual valve (7) are respectively arranged on the front oil outlet pipe (4) and the rear oil outlet pipe (5).

3. The brake master cylinder assembly with the double one-way valve according to claim 1, wherein: and rubber plugs (21) are plugged on the front oil pipe (2), the rear oil pipe (3), the first residual valve (6) and the second residual valve (7).

4. The brake master cylinder assembly with the double one-way valve according to claim 1, wherein: a rubber bellows-type dust cover (9) is attached to an opening of the master cylinder (1).

5. The brake master cylinder assembly with the double one-way valve according to claim 1, wherein: and a push rod groove (1801) is machined in the left end face of the second piston (18).

6. The brake master cylinder assembly with the double one-way valve according to claim 1, wherein: the brake master cylinder (1) and the front oil pipe (2), the rear oil pipe (3), the front oil outlet pipe (4) and the rear oil outlet pipe (5) are cast into a whole.