CN211969406U

CN211969406U - Electronic hydraulic booster for automobile braking system and automobile

Info

Publication number: CN211969406U
Application number: CN202020205491.4U
Authority: CN
Inventors: 李心
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-11-20
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses an electronic hydraulic booster and car for automobile brake system, electronic hydraulic booster includes valve body (1) and electromagnetic drive mechanism (2) for automobile brake system, contains slide valve (3) in valve body (1), is equipped with oil inlet (4) and oil-out (5) on valve body (1), and reciprocating motion between "slide valve non-braking extreme position" and "slide valve braking extreme position" can be followed to slide valve (3), and electromagnetic drive mechanism (2) are connected with slide valve (3), and when emergency braking signal was received in electromagnetic drive mechanism (2), electromagnetic drive mechanism (2) can make slide valve (3) follow slide valve non-braking extreme position to slide valve braking extreme position removes. When the sensing system of the vehicle monitors that the vehicle is in an emergency state, an emergency braking signal command can be sent to the electromagnetic driving mechanism (2), so that the vehicle can be decelerated or stopped emergently.

Description

Electronic hydraulic booster for automobile braking system and automobile

Technical Field

The utility model relates to an electronic hydraulic booster for automobile braking system still relates to a car that contains electronic hydraulic booster for automobile braking system.

Background

The hydraulic brake has the advantages of smooth and soft braking, low noise and the like, and is widely popularized in the fields of passenger cars, minivans and the like. However, in a commercial vehicle such as a midbus, the vehicle cannot be used in the commercial vehicle because of poor pedal feel, insufficient braking force, inability to realize an emergency braking function, and the like.

The traditional passenger car is generally below 3 tons, and the brake assisting force adopts the vacuum assisting force of a vacuum booster. The middle bus generally has about 7 tons, needs larger braking force, requires larger wheel cylinders of a brake, and has larger stroke of a brake master cylinder, so that the stroke of a brake pedal is longer when the whole vehicle brakes, and the brake pedal cannot be accepted by a driver. The hydraulic brake system that results in vacuum boosting is not available on a minibus.

The above problems can be solved by the hydraulic assist of the hydraulic booster. Because the inside of the hydraulic booster has a lever ratio, the pedal stroke of a minibus matched with the hydraulic booster is obviously reduced during braking, and the pedal feeling of a passenger vehicle can be achieved or obviously superior to that of a passenger vehicle. However, conventional hydraulic boosters generally do not have an emergency braking function.

SUMMERY OF THE UTILITY MODEL

In order to realize the emergency braking function, the utility model provides an electronic hydraulic booster and car for automobile braking system, when the perception system of vehicle monitored the vehicle and is in emergency, can send an emergency braking signal instruction for this electronic hydraulic booster's for automobile braking system electromagnetic drive mechanism, make the vehicle produce speed reduction or emergency stop.

The utility model provides a technical scheme that its technical problem adopted is: the electronic hydraulic booster for the automobile braking system comprises a valve body and an electromagnetic driving mechanism, wherein a slide valve is arranged in the valve body, an oil inlet and an oil outlet are formed in the valve body, the slide valve can axially reciprocate between a non-braking limit position and a braking limit position of the slide valve, the electromagnetic driving mechanism is connected with the slide valve, and when the electromagnetic driving mechanism receives an emergency braking signal, the electromagnetic driving mechanism can enable the slide valve to move from the non-braking limit position of the slide valve to the braking limit position of the slide valve.

The electromagnetic driving mechanism comprises an electromagnetic coil and an armature, the electromagnetic coil is fixedly connected with the valve body, the armature is fixedly connected with the sliding valve, and when the electromagnetic coil receives the emergency braking signal, the armature can drive the sliding valve to move from the non-braking limit position of the sliding valve to the braking limit position of the sliding valve.

The electromagnetic driving mechanism is connected outside the valve body, the armature contains a rod part and a head part which are connected in sequence, one end of the rod part is fixedly connected with one end of the slide valve, the electromagnetic coil is sleeved outside the rod part, the head part is of a round cake-shaped structure, and the outer diameter of the head part is larger than that of the rod part.

The electromagnetic driving mechanism also comprises a reset component which is connected with the armature and the valve body and can enable the armature to drive the slide valve to move from the slide valve braking limit position to the slide valve non-braking limit position when the electromagnetic coil loses the emergency braking signal.

The valve body contains the shell wall and helping hand hydraulic pressure chamber, still contains the helping hand piston in the valve body, and the one end of sliding valve and the one end of helping hand piston all are located helping hand hydraulic pressure intracavity, and the other end of sliding valve and the other end of helping hand piston all are located the shell wall.

A slide valve mounting hole and a power-assisted piston mounting hole are formed in the shell wall, the slide valve is located in the slide valve mounting hole, the power-assisted piston is located in the power-assisted piston mounting hole, the oil inlet and the oil outlet are connected with the slide valve mounting hole, and a radial through hole and an axial through hole are formed in the slide valve.

When the slide valve is at the non-braking limit position of the slide valve, the oil inlet is communicated with the oil outlet only through the slide valve mounting hole; when the slide valve is at the slide valve braking limit position, the oil inlet is communicated with the boosting hydraulic cavity only through the radial through hole and the axial through hole in sequence.

The inner surface of the slide valve mounting hole contains an inner small-diameter section, an inner annular surface and an inner large-diameter section which are sequentially connected, the inner small-diameter section is connected with the oil inlet, the inner large-diameter section is connected with the oil outlet, the outer surface of the slide valve contains an outer small-diameter section, an outer annular surface and an outer large-diameter section which are sequentially connected, the outer diameter of the outer large-diameter section is equal to the inner diameter of the inner small-diameter section, an annular valve port is formed between the inner annular surface and the outer annular surface, and when the slide valve is located at a non-braking limit position of the slide valve, the annular; when the slide valve is at the braking limit position, the annular valve port is in a closed state.

The electronic hydraulic booster for the automobile braking system further comprises a push rod and a lever, one end of the lever is connected with one end of the sliding valve through a first pin shaft, the other end of the lever is connected with one end of the piston through a second pin shaft, the push rod penetrates through the valve body, one end of the push rod is located in the boosting hydraulic cavity, one end of the push rod is connected with the lever through a third pin shaft, and the third pin shaft is located between the first pin shaft and the second pin shaft.

The utility model provides an automobile, the automobile includes whole car perception system and foretell for the automobile brake system electron hydraulic pressure booster, this whole car perception system is connected with electromagnetic drive mechanism, and this whole car perception system can send to electromagnetic drive mechanism emergency braking signal.

The utility model has the advantages that: when the sensing system of the vehicle monitors that the vehicle is in an emergency state, an emergency braking signal command can be sent to an electromagnetic driving mechanism of the electronic hydraulic booster for the automobile braking system, so that the vehicle can decelerate or stop emergently.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of a slide valve of an electronic hydraulic booster for a vehicle brake system according to the present invention in a non-braking limit position of the slide valve.

Fig. 2 is a schematic view of a slide valve of an electronic hydraulic booster for an automobile brake system according to the present invention at a braking limit position of the slide valve.

Fig. 3 is a schematic view of an electromagnetic drive mechanism.

FIG. 4 is an enlarged partial schematic view of the spool valve and valve body of FIG. 1.

Fig. 5 is a schematic diagram of the boosting curve of the electronic hydraulic booster for the automobile braking system during normal braking.

Fig. 6 is a schematic diagram of an assist curve of the electronic hydraulic booster for an automobile braking system during emergency braking.

1. A valve body; 2. an electromagnetic drive mechanism; 3. a spool valve; 4. an oil inlet; 5. an oil outlet; 6. a shell wall; 7. a power-assisted hydraulic chamber; 8. a booster piston; 9. a push rod; 10. a lever; 11. a brake pedal; 12. a steering tank; 13. a steering pump; 14. a brake master cylinder; 15. a wheel; 16. a vehicle sensing system;

201. an electromagnetic coil; 202. an armature; 203. a reset component; 204. a housing;

301. an outer minor diameter section; 302. an outer annular surface; 303. an outer major diameter section;

601. an inner minor diameter section; 602. an inner annular surface; 603. an inner large diameter section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

An electronic hydraulic booster for an automobile braking system comprises a valve body 1 and an electromagnetic driving mechanism 2, wherein a slide valve 3 is contained in the valve body 1, an oil inlet 4 and an oil outlet 5 are formed in the valve body 1, the slide valve 3 can reciprocate between a slide valve non-braking limit position and a slide valve braking limit position along the axial direction of the slide valve 3, the electromagnetic driving mechanism 2 is connected with the slide valve 3, and when the electromagnetic driving mechanism 2 receives an emergency braking signal, the electromagnetic driving mechanism 2 can enable the slide valve 3 to move from the slide valve non-braking limit position to the slide valve braking limit position, as shown by a chain-dotted rectangle in fig. 1 and fig. 2.

In the present embodiment, the electromagnetic drive mechanism 2 has substantially the same configuration as that of a conventional electromagnetic valve. The electromagnetic driving mechanism 2 comprises an electromagnetic coil 201 and an armature 202, the armature 202 is fixedly connected with the slide valve 3, the axis of the armature 202 is parallel to the axis of the slide valve 3, the electromagnetic coil 201 is fixedly connected with the valve body 1, when the electromagnetic coil 201 receives the emergency braking signal, the armature 202 can drive the slide valve 3 to move from the slide valve non-braking limit position to the slide valve braking limit position (namely, the slide valve 3 moves leftwards in the figure 1), and the slide valve 3 moves from the slide valve non-braking limit position to the slide valve braking limit position.

In this embodiment, the electromagnetic driving mechanism 2 is connected outside the valve body 1, the armature 202 includes a rod portion and a head portion which are connected in sequence, one end of the rod portion is connected and fixed with one end of the slide valve 3, the electromagnetic coil 201 is sleeved outside the rod portion, the head portion is in a disc-shaped structure, and the outer diameter of the head portion is larger than that of the rod portion. When the solenoid 201 is continuously energized (e.g., receives the emergency brake signal), the solenoid 201 will attract the armature 202 to move to the left, as shown in fig. 3; when the solenoid coil 201 is continuously de-energized (e.g., the emergency brake signal is not received or lost), the solenoid coil 201 does not attract the head of the armature 202, which is away from the solenoid coil 201, of the armature 202.

In the present embodiment, the electromagnetic driving mechanism 2 further includes a return member 203 and a housing 204, two ends of the return member 203 are respectively connected to the armature 202 and the valve body 1, and the return member 203 may be a spring. When the solenoid 201 loses the emergency braking signal, the reset component 203 enables the armature 202 to move the spool valve 3 from the spool valve braking limit position to the spool valve non-braking limit position (i.e., the spool valve 3 moves to the right in fig. 1). The resetting part 203 may be provided or not, and the reaction force of the brake pedal 11 and the master cylinder 14 described below will also reset the spool valve 3 (i.e., the spool valve 3 moves from the spool valve braking limit position to the spool valve non-braking limit position).

In this embodiment, the valve body 1 includes a housing wall 6 and a booster hydraulic chamber 7, the valve body 1 further includes a booster piston 8 therein, one end of the spool valve 3 and one end of the booster piston 8 are both located in the booster hydraulic chamber 7, and the other end of the spool valve 3 and the other end of the booster piston 8 are both located in the housing wall 6. A slide valve mounting hole and a power-assisted piston mounting hole are formed in the shell wall 6, the slide valve 3 is located in the slide valve mounting hole in a matching mode, the power-assisted piston 8 is located in the power-assisted piston mounting hole in a matching mode, the oil inlet 4 and the oil outlet 5 are both connected with the slide valve mounting hole, and a radial through hole and an axial through hole are formed in the slide valve 3.

In the embodiment, when the slide valve 3 is at the non-braking limit position of the slide valve, the oil inlet 4 is communicated with the oil outlet 5 only through the slide valve mounting hole, the oil inlet 4 is not communicated with the axial through hole in the slide valve 3, and the hydraulic oil enters from the oil inlet 4 and then flows into the oil outlet 5 only, but does not flow into the axial through hole in the slide valve 3, as shown by the arrow in fig. 1. When the slide valve 3 is at the slide valve braking limit position, the oil inlet 4 is communicated with the boosting hydraulic cavity 7 only through the radial through hole and the axial through hole in sequence, the oil inlet 4 is not communicated with the oil outlet 5, and the hydraulic oil enters from the oil inlet 4 and then flows into the boosting hydraulic cavity 7 only through the radial through hole and the axial through hole in sequence, but does not flow into the oil outlet 5, as shown by arrows in fig. 2. The booster hydraulic chamber 7 is normally filled with a pressure fluid, such as hydraulic oil.

In the present embodiment, the inner surface of the slide valve mounting hole includes an inner small diameter section 601, an inner annular surface 602, and an inner large diameter section 603 connected in sequence, the inner small diameter section 601 is connected to the oil inlet 4, the inner large diameter section 603 is connected to the oil outlet 5, and the inner diameter of the inner small diameter section 601 is smaller than the inner diameter of the inner large diameter section 603. The outer surface of the spool 3 includes an outer small diameter section 301, an outer annular surface 302, and an outer large diameter section 303 in this order, the outer diameter of the outer small diameter section 301 being smaller than the outer diameter of the outer large diameter section 303, and the outer diameter of the outer large diameter section 303 being equal to the inner diameter of the inner small diameter section 601, as shown in fig. 4. An annular valve port b is formed between the inner annular surface 602 and the outer annular surface 302, when the slide valve 3 is at the non-braking limit position of the slide valve, the oil inlet 4 is communicated with the oil outlet 5, and the annular valve port b is in an open state, as shown in fig. 1; when the slide valve 3 is at the slide valve braking limit position, the oil inlet 4 is not communicated with the oil outlet 5, and the annular valve port b is in a closed state, as shown in fig. 2.

In this embodiment, the electronic hydraulic booster for the automobile braking system further includes a push rod 9 and a lever 10, one end of the lever 10 is hinged to one end of the sliding valve 3 through a first pin, the other end of the lever 10 is hinged to one end of the boosting piston 8 through a second pin, the push rod 9 penetrates through the valve body 1, one end of the push rod 9 is located in the boosting hydraulic cavity 7, the other end of the push rod 9 is located outside the boosting hydraulic cavity 7, one end of the push rod 9 is hinged to the lever 10 through a third pin, the third pin is located between the first pin and the second pin, and an axis of the first pin, an axis of the second pin and an axis of the third pin are parallel to each other.

The utility model discloses well valve body 1's internal construction is the same basically with current hydraulic booster's internal construction, can understand that the utility model discloses an electromagnetic drive mechanism 2 has been increased on current hydraulic booster's basis. Car is electronic hydraulic booster for braking system can be to current hydraulic booster's transformation, contains all can transform into of valve body 1 and sliding valve 3 among the current hydraulic booster does electronic hydraulic booster for braking system. The design parameters of the solenoid 201 and armature 202 in the electromagnetic actuator 2 are required to be satisfied to enable the spool valve 3 to move from the non-braking limit position of the spool valve to the braking limit position of the spool valve.

The following describes a vehicle including a vehicle sensing system 16 and the above-mentioned electronic hydraulic booster for a vehicle braking system, where the vehicle sensing system 16 is connected to the electromagnetic driving mechanism 2, and the vehicle sensing system 16 is capable of sending the emergency braking signal to the electromagnetic driving mechanism 2.

The car still includes brake pedal 11, turns to jar 12, steering pump 13, brake master cylinder 14 and wheel 15, brake pedal 11, turns to the jar 12, turns to the structure of pump 13, brake master cylinder 14 and wheel 15 and the utility model discloses the relation of connection with other parts all is the same with among the prior art in the car. Whole car perception system 16 contains the control unit and the radar that backs a car around with, this control unit and the structure of the radar that backs a car around and this the utility model the relation of connection with other parts all is the same with among the prior art in the car. The steering tank 12 is connected with the steering pump 13, the steering pump 13 is connected with the oil inlet 4, the steering tank 12 is connected with the oil outlet 5, and the boosting piston 8 is connected with the braking piston of the braking master cylinder 14 through a connecting rod. The other end of the push rod 9 abuts against the brake pedal 11.

The operation of the electronic hydraulic booster for a vehicle brake system will be described.

1. And (3) non-working state:

when the brake pedal 11 is not stepped on, the electronic hydraulic booster for the automobile brake system does not work, the valve port b is in an open state, hydraulic oil pumped out by the steering pump 13 enters the valve body 1 from the oil inlet 4, flows along the arrow direction, flows through the valve port b, directly flows back to the steering tank 12 from the oil outlet 5, the hydraulic oil cannot enter the boosting hydraulic cavity 7 of the valve body 1, and the hydraulic oil cannot exert the hydraulic boosting effect, as shown in fig. 1;

2. and (3) normal braking state:

when braking is needed, a user steps on the brake pedal 11 with a foot to enable the brake pedal 11 to rotate clockwise, the brake pedal 11 controls the slide valve 3 to move leftwards through the push rod 9 and the lever 10 until the valve port b is in a closed state, hydraulic oil pumped out by the steering pump 13 enters from the oil inlet 4 and enters the boosting hydraulic cavity 7 through the radial through hole and the axial through hole of the slide valve 3 in sequence, namely the hydraulic oil flows in the direction of an arrow to build up liquid pressure, the hydraulic oil acts on one end of the boosting piston 8 to push the boosting piston 8 to move leftwards, the boosting piston 8 enables a braking pressure needed by braking to build up in a braking main cylinder 14, and the pressure acts on a wheel 15 to brake a vehicle, as shown in fig. 2. In this process, the electronic hydraulic booster for the automobile brake system exerts the function of ordinary hydraulic boosting, and the boosting curve in normal braking is shown in fig. 5.

3. In an emergency state:

in an emergency, when the vehicle sensing system 16 monitors that the surrounding environment is in an emergency, such as a mistake of stepping on an accelerator as a brake, a pedestrian crossing on a road, and the like, the vehicle sensing system 16 sends an emergency braking signal to the electromagnetic driving mechanism 2 of the electronic hydraulic booster for the vehicle braking system, and when the electromagnetic driving mechanism 2 receives the emergency braking signal, the electromagnetic driving mechanism 2 can enable the sliding valve 3 to move from the non-braking limit position of the sliding valve to the braking limit position of the sliding valve, so that the emergency braking of the vehicle is realized, as shown in fig. 2.

For example, when the accelerator is mistakenly braked, the control unit of the whole vehicle sensing system 16 obtains that a large obstacle exists in a set distance (for example, 2-4 meters) in the front of the vehicle according to a signal received and sent by a front reversing radar, the control unit judges that the vehicle is in an emergency state at the moment, the control unit rapidly sends an emergency braking signal to the electromagnetic driving mechanism 2, for example, the control unit continuously supplies power to the electromagnetic coil 201, and the electromagnetic coil 201 attracts the armature 202 to rapidly move leftwards, so that the slide valve 3 moves from the non-braking limit position of the slide valve to the braking limit position of the slide valve. At this time, the valve port b is in a closed state, and the pressure fluid continuously flows out from the steering pump 13 into the boosting hydraulic pressure chamber 7, and rapidly pushes the boosting piston 8 to move leftward. Thus, the rated maximum pressure is instantly established in the cavity of the electronic hydraulic booster for the automobile braking system. This pressure acts on the booster piston 8 to generate a booster force, so that the maximum braking hydraulic pressure required for braking is quickly built up in the master cylinder 14, and the vehicle is braked emergently, thereby avoiding the risk, as shown in fig. 6.

For convenience of understanding and description, the present invention is expressed in terms of absolute positional relationship, wherein the directional word "left" indicates the left direction of fig. 1, and the directional word "right" indicates the right direction of fig. 1. The present invention is described by using the observation angle of the reader, but the above-mentioned orientation words can not be understood or interpreted as the limitation of the protection scope of the present invention.

The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.

Claims

1. The utility model provides an electronic hydraulic booster for automobile brake system, characterized in that, electronic hydraulic booster for automobile brake system includes valve body (1) and electromagnetic drive mechanism (2), contains slide valve (3) in valve body (1), is equipped with oil inlet (4) and oil-out (5) on valve body (1), and reciprocating motion between the non-braking extreme position of slide valve and slide valve braking extreme position can be followed to slide valve (3) along the axial, and electromagnetic drive mechanism (2) are connected with slide valve (3), and when emergency braking signal was received to electromagnetic drive mechanism (2), electromagnetic drive mechanism (2) can make slide valve (3) follow the non-braking extreme position of slide valve to slide valve braking extreme position removes.

2. The electronic hydraulic booster for the automobile braking system according to claim 1, characterized in that the electromagnetic driving mechanism (2) comprises an electromagnetic coil (201) and an armature (202), the electromagnetic coil (201) is fixedly connected with the valve body (1), the armature (202) is fixedly connected with the slide valve (3), and when the electromagnetic coil (201) receives the emergency braking signal, the armature (202) can drive the slide valve (3) to move from the non-braking limit position of the slide valve to the braking limit position of the slide valve.

3. The electronic hydraulic booster for the automobile braking system according to claim 2, wherein the electromagnetic driving mechanism (2) is connected outside the valve body (1), the armature (202) comprises a rod part and a head part which are sequentially connected, one end of the rod part is fixedly connected with one end of the slide valve (3), the electromagnetic coil (201) is sleeved outside the rod part, the head part is of a disc-shaped structure, and the outer diameter of the head part is larger than that of the rod part.

4. The electrohydraulic booster for vehicle braking systems according to claim 2, characterized in that the electromagnetic actuating mechanism (2) further comprises a reset element (203), the reset element (203) being connected to the armature (202) and the valve body (1), the reset element (203) being capable of moving the armature (202) with the slide valve (3) from the slide valve braking limit position to the slide valve non-braking limit position when the solenoid (201) loses the emergency braking signal.

5. The electronic hydraulic booster for an automobile brake system according to claim 1, wherein the valve body (1) comprises a housing wall (6) and a booster hydraulic chamber (7), the valve body (1) further comprises a booster piston (8), one end of the slide valve (3) and one end of the booster piston (8) are both located in the booster hydraulic chamber (7), and the other end of the slide valve (3) and the other end of the booster piston (8) are both located in the housing wall (6).

6. The electronic hydraulic booster for an automobile braking system according to claim 5, wherein a slide valve mounting hole and a booster piston mounting hole are formed in the casing wall (6), the slide valve (3) is located in the slide valve mounting hole, the booster piston (8) is located in the booster piston mounting hole, the oil inlet (4) and the oil outlet (5) are both connected with the slide valve mounting hole, and a radial through hole and an axial through hole are formed in the slide valve (3).

7. The electronic hydraulic booster for automobile brake systems according to claim 6, characterized in that the oil inlet port (4) communicates with the oil outlet port (5) only through the slide valve mounting hole when the slide valve (3) is in the non-braking extreme position of the slide valve; when the slide valve (3) is at the slide valve braking limit position, the oil inlet (4) is communicated with the boosting hydraulic cavity (7) only through the radial through hole and the axial through hole in sequence.

8. The electronic hydraulic booster for the automobile braking system according to claim 7, wherein the inner surface of the slide valve mounting hole comprises an inner small diameter section (601), an inner annular surface (602) and an inner large diameter section (603) which are connected in sequence, the inner small diameter section (601) is connected with the oil inlet (4), the inner large diameter section (603) is connected with the oil outlet (5), the outer surface of the slide valve (3) comprises an outer small diameter section (301), an outer annular surface (302) and an outer large diameter section (303) which are connected in sequence, the outer diameter of the outer large diameter section (303) is equal to the inner diameter of the inner small diameter section (601), an annular valve port is formed between the inner annular surface (602) and the outer annular surface (302), and when the slide valve (3) is in the non-braking limit position of the slide valve, the annular valve port is in an open state; when the slide valve (3) is at the braking limit position of the slide valve, the annular valve port is in a closed state.

9. The electronic hydraulic booster for the automobile braking system according to claim 5, further comprising a push rod (9) and a lever (10), wherein one end of the lever (10) is connected with one end of the sliding valve (3) through a first pin, the other end of the lever (10) is connected with one end of the boosting piston (8) through a second pin, the push rod (9) penetrates through the valve body (1), one end of the push rod (9) is located in the boosting hydraulic cavity (7), one end of the push rod (9) is connected with the lever (10) through a third pin, and the third pin is located between the first pin and the second pin.

10. An automobile, characterized in that the automobile comprises an entire automobile sensing system (16) and the electronic hydraulic booster for the automobile braking system as claimed in claim 1, the entire automobile sensing system (16) is connected with an electromagnetic driving mechanism (2), and the entire automobile sensing system (16) can send the emergency braking signal to the electromagnetic driving mechanism (2).