CN211468415U

CN211468415U - Brake booster unit for electric automobile

Info

Publication number: CN211468415U
Application number: CN201921716049.1U
Authority: CN
Inventors: 王彦; 李万敏; 赵耕云; 朱有地
Original assignee: Lanzhou Institute of Technology
Current assignee: Lanzhou Institute of Technology
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-09-11
Anticipated expiration: 2029-10-14

Abstract

The utility model relates to the technical field of electric automobile manufacturing, and discloses a brake booster for electric automobiles, which comprises a vacuum chamber, a VCU control assembly and a pipe clamp, wherein a channel is arranged on the right side surface of the vacuum chamber, a piston head is arranged inside the channel, a push rod is fixedly connected with the right end of the piston head, a pedal is fixedly connected with the right end of the push rod, a pressure chamber is arranged in the push rod in an inserting manner, a Z-shaped pipe is communicated with the left side of the vacuum chamber, a negative pressure tank is communicated with the left side of the Z-shaped pipe, the lower surface of the negative pressure tank is communicated with a straight pipe, a pressure sensor is fixedly connected with the outer surface of the negative pressure tank, a vacuum pump is communicated with one side of the straight pipe away from the negative pressure tank, and the brake booster for electric automobiles not only improves the flexibility of installation and arrangement of the whole brake vacuum booster, improves, thereby achieving the effects of stable movement, safety and stability.

Description

Brake booster unit for electric automobile

Technical Field

The utility model relates to an electric automobile makes technical field, specifically is a braking booster unit for electric automobile.

Background

In the traditional brake system, the brake is realized by that a driver applies force on a brake pedal, and the force is amplified and converted into hydraulic pressure force through a vacuum boosting system to act on the brake, so that the brake is realized. The vacuum booster system used in the present automobile is composed of a vacuum booster with a brake master cylinder, a vacuum tank, a vacuum pump and a vacuum tube. The vacuum booster with the brake master cylinder amplifies the brake force applied to the pedal by a driver by utilizing the pressure difference between vacuum and atmosphere, the force is transmitted to the brake master cylinder to establish hydraulic pressure, the pedal force is converted to hydraulic pressure, braking is further realized, the vacuum tank is responsible for storing vacuum, the vacuum pump is responsible for generating vacuum, the vacuum pump used on the traditional automobile adopts an eccentric thrower type, and the thrower generates suction force when rotating to pump air and generate vacuum.

Electric automobiles (including hybrid electric automobiles) cannot generate a continuous and long-term reliable vacuum source through a driving motor or an engine in a power assembly, so an electric vacuum pump needs to be additionally arranged on the electric automobile, but if the electric vacuum pump works continuously during the running of the automobile, useless work is done for a lot of time, and energy waste is caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a braking booster unit for electric automobile possesses the energy saving, is convenient for install, and advantages such as simple structure have solved when electric vacuum pump uninterrupted duty in the car operation, then do idle work in a lot of time, cause the extravagant problem of the energy.

(II) technical scheme

For realizing above-mentioned energy saving, be convenient for install, simple structure's purpose, the utility model provides a following technical scheme: the utility model provides a braking booster unit for electric automobile, includes real empty room, VCU control assembly and pipe strap, the passageway has been seted up to real empty room's right flank, the inside of passageway is provided with the piston head, the piston head is kept away from the one end fixedly connected with push rod of passageway, the push rod is kept away from the one end fixedly connected with footboard of piston head, the push rod alternates and is provided with the pressure chamber, real empty room's left side intercommunication has Z type pipe, the left side intercommunication of Z type pipe has the negative pressure jar, the negative pressure jar is kept away from one side intercommunication of Z type pipe has the straight tube, the outer fixed surface of negative pressure jar is connected with pressure sensor, real empty room's surface intercommunication has the air cock, the straight tube is kept away from one side intercommunication of negative pressure jar has the vacuum pump, the straight tube with Z type.

Preferably, the outer surface of the piston head is wrapped with a sealing sleeve.

Preferably, check valves are arranged inside the Z-shaped pipe and the straight pipe.

Preferably, the outer surface of the pedal is provided with a non-slip mat.

Preferably, the vacuum degree of the vacuum chamber is 50Kpa to 70 Kpa.

Preferably, two ends of the VCU control assembly are electrically connected to the vacuum chamber and the vacuum pump, respectively.

(III) advantageous effects

Compared with the prior art, the utility model provides a braking booster unit for electric automobile possesses following beneficial effect:

(1) this electric automobile is with braking booster unit, through setting up the passageway in vacuum pump inside, the inside piston head that is provided with of passageway, the opposite side of piston head is provided with the push rod, through promoting the push rod, make the piston head remove left, and then can make real empty room and pneumatic chamber form the pressure differential, this kind of pressure differential automatic promotion push rod moves forward, thereby reach steady motion and safety and stability's effect, through being provided with the vacuum pump, make real empty room keep the vacuum state, uninterrupted duty when the vacuum pump is in the car operation has been prevented greatly, then do idle work in a lot of time, cause the energy extravagant.

(2) This braking booster unit for electric automobile through being provided with VCU control assembly, VCU control assembly can control opening and closing of vacuum pump, facilitates the use, is provided with the pipe strap through the surface at Z type pipe and straight tube, can be with Z type pipe and straight tube fixed mounting on the automobile body, prevents when traveling because of the vehicle, because vibrations drop.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises a pedal 1, a push rod 2, a pressure chamber 3, a piston head 4, a vacuum chamber 5, a channel 6, an air tap 7, an 8Z-shaped pipe, a one-way valve 9, a pipe clamp 10, a negative pressure tank 11, a straight pipe 12, a pressure sensor 13, a vacuum pump 14, a sealing sleeve 15 and a control assembly 16 VCU.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a brake power assisting device for an electric automobile comprises a vacuum chamber 5, a VCU control assembly 16 and a pipe clamp 10, a channel 6 is formed in the right side face of the vacuum chamber 5, a piston head 4 is arranged inside the channel 6, a push rod 2 is fixedly connected to one end, away from the channel 6, of the piston head 4, a pedal 1 is fixedly connected to one end, away from the piston head 4, of the push rod 2, a pressure chamber 3 is arranged in the push rod 2 in an inserting mode, a Z-shaped pipe 8 is communicated to the left side of the vacuum chamber 5, a negative pressure tank 11 is communicated to the left side of the Z-shaped pipe 8, a straight pipe 12 is communicated to one side, away from the Z-shaped pipe 8, of the negative pressure tank 11, a pressure sensor 13 is fixedly connected to the outer surface of the negative pressure tank 11, an air faucet 7 is communicated to the outer surface of.

Furthermore, the outer surface of the piston head 4 is wrapped by a sealing sleeve 15, and the sealing sleeve 15 can increase the friction force between the piston head 4 and the channel 6 to prevent air leakage.

Furthermore, check valves 9 are arranged inside the Z-shaped pipes 8 and the straight pipes 12, and the check valves 9 prevent gas inside the Z-shaped pipes 8 and the straight pipes 12 from flowing back.

Furthermore, the outer surface of the pedal 1 is provided with a non-slip mat, and the non-slip mat can increase the friction force between the pedal 1 and the outside, so that the pressing effect is better.

Further, the vacuum degree of the vacuum chamber 5 is 50 Kpa-70 Kpa, the vacuum pump 14 is started to work when the vacuum degree is lower than 50Kpa, and the vacuum pump 14 stops working when the vacuum degree reaches 70Kpa, so that the flexibility of installation and arrangement of the whole braking vacuum booster device is improved, the braking performance is improved, and the safety and controllability of driving are improved.

Furthermore, two ends of the VCU control assembly 16 are electrically connected to the vacuum chamber 5 and the vacuum pump 14, respectively, and the VCU control assembly 16 can control the opening and closing of the vacuum pump 14, so that the vacuum pump is convenient to use.

The working principle is as follows: the brake booster for the electric automobile monitors vacuum in a vacuum chamber in real time by a pressure sensor, after the pressure sensor generates a vacuum signal, a VCU control assembly generates an opening and closing control strategy for the vacuum pump, for example, the vacuum degree in the vacuum chamber is controlled between 50Kpa and 70Kpa, if the vacuum degree is lower than 50Kpa, the vacuum pump 16 is opened to work, and when the vacuum degree reaches 70Kpa, the vacuum pump stops working, so that the flexibility of installation and arrangement of the whole brake vacuum booster is improved, the brake performance is improved, and the safety and controllability of driving are improved.

In summary, in the brake booster for electric vehicles, the channel 6 is arranged inside the vacuum pump 14, the piston head 4 is arranged inside the channel 6, the push rod 2 is arranged on the other side of the piston head 4, the piston head 4 is moved leftwards by pushing the push rod 2, so that the vacuum chamber 14 and the air pressure chamber 3 can form a pressure difference, the pressure difference automatically pushes the push rod 2 to move forwards, thereby achieving the effects of stable movement, safety and stability, the vacuum chamber 5 is kept in a vacuum state by arranging the vacuum pump 14, thereby greatly preventing the vacuum pump 14 from doing useless work and causing energy waste in the running of the vehicle when the vacuum pump 14 works uninterruptedly, the vacuum pump 14 can control the opening and closing of the vacuum pump 14 by arranging the VCU control assembly 16, the use is convenient, the Z-shaped pipe 8 and the straight pipe 12 can be fixedly arranged on the vehicle body by arranging the pipe clamp 10 on the outer surfaces of the Z-shaped pipe 8 and the straight pipe 12, prevent from dropping due to vibration when the vehicle runs.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a braking booster unit for electric automobile, includes vacuum chamber (5), VCU control assembly (16) and pipe strap (10), its characterized in that: a channel (6) is formed in the right side face of the vacuum chamber (5), a piston head (4) is arranged in the channel (6), a push rod (2) is fixedly connected to one end, far away from the channel (6), of the piston head (4), a pedal (1) is fixedly connected to one end, far away from the piston head (4), of the push rod (2), a pressure chamber (3) is arranged in an inserting mode, a Z-shaped pipe (8) is communicated to the left side of the vacuum chamber (5), a negative pressure tank (11) is communicated to the left side of the Z-shaped pipe (8), a straight pipe (12) is communicated to one side, far away from the Z-shaped pipe (8), of the negative pressure tank (11), a pressure sensor (13) is fixedly connected to the outer surface of the negative pressure tank (11), an air faucet (7) is communicated to the outer surface of the vacuum chamber (5), and a vacuum pump (14) is communicated to, the straight pipe (12) and the Z-shaped pipe (8) are fixedly arranged on the vehicle body through the pipe clamp (10).

2. The brake booster for an electric vehicle according to claim 1, characterized in that: the outer surface of the piston head (4) is wrapped with a sealing sleeve (15).

3. The brake booster for an electric vehicle according to claim 1, characterized in that: and one-way valves (9) are arranged inside the Z-shaped pipe (8) and the straight pipe (12).

4. The brake booster for an electric vehicle according to claim 1, characterized in that: the outer surface of the pedal (1) is provided with a non-slip mat.

5. The brake booster for an electric vehicle according to claim 1, characterized in that: the vacuum degree of the vacuum chamber (5) is 50 Kpa-70 Kpa.

6. The brake booster for an electric vehicle according to claim 1, characterized in that: two ends of the VCU control assembly (16) are respectively and electrically connected with the vacuum chamber (5) and the vacuum pump (14).