CN212172192U

CN212172192U - Light automobile hydraulic master cylinder with safe braking

Info

Publication number: CN212172192U
Application number: CN202020543562.1U
Authority: CN
Inventors: 鲍长国; 鲍静
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-18
Anticipated expiration: 2030-04-14

Abstract

The utility model discloses a light automobile hydraulic pressure master cylinder of braking safety, including the liquid storage pot, cut apart into cavity I and cavity II in the liquid storage pot, communicate with each other with the preceding cavity and the rear chamber of master cylinder respectively, it is preceding, establish preceding oil-out and back oil-out in the rear chamber, communicate with each other with the wheel cylinder respectively, level sensor I and level sensor II are established respectively to cavity I and cavity II, control valve I and control valve II are established respectively to preceding oil-out and back oil-out, level sensor I and level sensor II are controlled control valve I and control valve II's implementation through on-vehicle computer. The reduction of oil in the brake master cylinder and the liquid storage tank can be greatly reduced when oil leakage occurs, the pressure of the master cylinder is kept relatively stable during braking, the braking capability of an automobile is improved, and the probability of personal safety is reduced.

Description

Light automobile hydraulic master cylinder with safe braking

Technical Field

The utility model belongs to vehicle braking accessories especially relates to a light automobile hydraulic pressure master cylinder of braking safety.

Background

The automobile is an indispensable transportation tool in modern society, modern economic construction and modern national defense, is a mark of the development level of modern science and technology, and is also a mark of social material life. At present, with the increasing living standard, the social automobile has gone into thousands of households. The brake master cylinder assembly is used as an important component of an automobile brake system, and the performance of the brake master cylinder assembly not only influences the overall performance of an automobile, but also is closely related to the life safety of people. The existing domestic automobile brake system generally adopts a double-cavity brake master cylinder with double pipelines, and under the condition that one brake pipeline leaks oil, the brake of the whole automobile can be guaranteed. However, as the time goes by and the braking frequency increases, the oil leakage situation becomes more serious, so that the braking effect and the braking distance are influenced, and if the oil leakage situation is serious, the brake failure is caused, and the personal safety is influenced. To address these problems, it is necessary to optimize and improve the master cylinder.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the potential safety hazard under the oil leak condition takes place for a current brake piping, provide a light automobile hydraulic pressure master cylinder of braking safety that can keep braking ability for a long time when the oil leak condition takes place.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a light automobile hydraulic pressure master cylinder of braking safety, including the liquid storage pot, cut apart into cavity I and cavity II in the liquid storage pot, respectively with the main cylinder before, the back cavity communicates with each other, before, establish preceding oil-out and back oil-out in the back cavity, communicate with each other with the wheel cylinder respectively, level sensor I and level sensor II are established respectively to cavity I and cavity II, control valve I and control valve II are established respectively to preceding oil-out and back oil-out, level sensor I and level sensor II are through the implementation control of on-vehicle computer to control valve I and control valve II.

Preferably, the liquid level sensor is a floating ball type liquid level sensor.

Preferably, the control valve is a rack and pinion control valve, which comprises a tubular column, a housing, a motor, a rack and a gear, wherein the tubular column is divided into an upper section, a middle section and a lower section, the middle section is an adjusting section, the length of the tubular column is adjusted through an inner screw thread and an outer screw thread arranged at the segmentation position, semicircular retaining pieces are arranged at the upper end and the lower end of the tubular column, symmetrical positioning pins are arranged on the semicircular retaining pieces, an upper base and a lower base are arranged in the housing, positioning chutes matched with the semicircular retaining pieces are arranged on the upper base and the lower base, an upper oil port and a lower oil port are arranged on the upper base and the lower base, the tubular column is fixed in the housing through the matching of the positioning pins and the positioning chutes, the rack is fixed on the lower section of the tubular column, the rack is perpendicular to the symmetrical line connecting axes of the semicircular retaining pieces, The lower oil port is in a communicated and separated state, and the shell is fixed at the oil outlet of the main pump and is communicated with the upper oil port.

Preferably, the control valve is a solenoid valve.

The principle of the utility model is as follows: when oil leaks in one of the two pipelines of the brake master cylinder, oil in the liquid storage tank communicated with the pipeline is gradually reduced along with the time, the liquid level sensor sends a signal to the vehicle-mounted computer when the liquid level is reduced to a set liquid level low point, the vehicle-mounted computer controls the control valve to be closed, so that the corresponding oil outlet is closed, the control valve is opened when the liquid level reaches the high point, and the liquid level is kept unchanged between the low point and the high point. The used oil cannot continuously leak outwards, the hydraulic pressure in the main cylinder is kept, and the normal state of the brake system is maintained.

The utility model discloses rack and pinion control valve operation principle: when the motor receives a forward and reverse rotation signal transmitted by the vehicle-mounted computer, the gear rotates to drive the rack to move left and right, the rack moves left and right to drive the pipe column to move left and right in the positioning sliding groove, and the upper oil port and the lower oil port on the pipe column are communicated and disconnected with the oil outlet, so that the on-off control of the oil outlet is realized.

The utility model has the advantages that: the utility model discloses an add level sensor and control valve, can guarantee that the reduction of the fluid in very big degree reduction brake master cylinder and the liquid storage tank when taking place the oil leak, master cylinder pressure is relatively stable when keeping the braking, improves the braking ability of car, reduces the probability that personal safety takes place, wherein adopts rack and pinion control valve can improve oil-out control stability.

Drawings

FIG. 1 is a schematic structural diagram of a light automobile hydraulic master cylinder with safe braking;

FIG. 2 is a schematic view of a rack and pinion control valve;

FIG. 3 is a schematic diagram of a top view of a pipe column of the rack and pinion control valve.

Detailed Description

Embodiment 1, it is right to combine fig. 1-3 below to explain further the utility model discloses, a light automobile hydraulic pressure master cylinder of braking safety, including liquid storage pot 1, cut apart into cavity I2 and cavity II 3 in the liquid storage pot, communicate with each other with preceding cavity 9 and the back cavity 10 of master cylinder respectively, preceding, establish preceding oil-out 11 and back oil-out 12 in the back cavity, communicate with each other with the wheel cylinder respectively, top fixed mounting has floater formula level sensor I4 and floater formula level sensor II 5 respectively in cavity I and the cavity II, preceding oil-out and back oil-out establish ties fixed mounting respectively and have control valve I6 and control valve II 7, the delivery outlet of floater formula level sensor I and floater formula level sensor II is connected with on-vehicle computer 8's input port, control valve I and control valve II are connected with on-vehicle computer output port through relay or positive reverse control circuit. Preferably, the control valve is a solenoid valve. Preferably, the control valve is a gear and rack control valve, comprising a tubular column 61, a housing 62, a motor 63, a rack 64 and a gear 65, the tubular column is divided into an upper section, a middle section and a lower section, the middle section is an adjusting section 611, the length of the tubular column is adjusted through inner and outer screw ports arranged at the segmentation position, the upper and lower ports of the tubular column are provided with semicircular blocking pieces 612, the semicircular blocking pieces are provided with symmetrical positioning pins 613, an upper base 621 and a lower base 622 are arranged in the housing, the upper base and the lower base are provided with positioning chutes matched with the semicircular blocking pieces, the upper base and the lower base are provided with an upper oil port and a lower oil port, the tubular column is fixed in the housing through the matching of the positioning pins and the positioning chutes, the rack is fixed on the lower section of the tubular column, the rack is vertical to the connecting line axis of the symmetrical positioning pins on the semicircular, the pipe column is communicated and separated with the upper oil port and the lower oil port, and the shell is fixed at the oil outlet of the main pump and communicated with the upper oil port.

Claims

1. The utility model provides a light automobile hydraulic pressure master cylinder of braking safety, includes liquid storage pot (1), cuts apart into cavity I (2) and cavity II (3) in the liquid storage pot, communicates with each other with preceding cavity (9) and back cavity (10) of master cylinder respectively, and oil-out (11) and back oil-out (12) before establishing in preceding, the back cavity communicate with each other its characterized in that with the wheel cylinder respectively: liquid level sensor I (4) and liquid level sensor II (5) are established respectively to cavity I and cavity II, and control valve I (6) and control valve II (7) are established respectively to preceding oil-out and back oil-out, and liquid level sensor I and liquid level sensor II are through on-vehicle computer (8) to control valve I and control valve II's implementation control.

2. The master cylinder of claim 1, wherein: the liquid level sensor is a floating ball type liquid level sensor.

3. The master cylinder of claim 1, wherein: the control valve is a gear rack control valve and comprises a pipe column (6-1), a shell (6-2), a motor (6-3), a rack (6-4) and a gear (6-5), wherein the pipe column is divided into an upper section, a middle section and a lower section, the middle section is an adjusting section (6-1-1), the length of the pipe column is adjusted through an inner screw thread and an outer screw thread arranged at the subsection position, the upper port and the lower port of the pipe column are provided with semicircular baffle plates (6-1-2), the semicircular baffle plates are provided with symmetrical positioning pins (6-1-3), an upper base (6-2-1) and a lower base (6-2-2) are arranged in the shell, the upper base and the lower base are provided with positioning chutes matched with the semicircular baffle plates, the upper oil thread and the lower oil thread are arranged on the upper base and the lower, the lower section of the pipe column is fixed with a rack, the rack is perpendicular to the line axis of the symmetrical positioning pins on the semicircular separation blade, the motor is fixed in the shell through the bracket, the motor rotating shaft is provided with a gear, the gear is meshed with the rack, the pipe column is in a communicating and separating state with the upper oil port and the lower oil port through the left and right displacement of the rack, and the shell is fixed at the oil outlet of the main pump and is communicated with the upper oil port.

4. The master cylinder of claim 1, wherein: the control valve is an electromagnetic valve.