Vehicle braking device
By designing the mutual cooperation of the second push plate, front piston, rear piston and return spring in the automobile brake device, and the pressure difference balance of the vacuum booster body of the piston pushes the diaphragm to move, the problem of the damage to the oil circuit of the single valve body is solved, and the braking effect is ensured without damage, and the reliability and safety of the device are improved.
Patent Information
- Application Number
- CN202420492559.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The existing automobile brake device has a single valve body oil circuit design during the braking process. If the valve body oil circuit is damaged, the car may not be able to brake, which poses safety hazards.
A vehicle braking device is designed, by providing the mutual cooperation between the second push plate, the front piston, the rear piston and the return spring, ensuring that the rear chamber can work normally when the front chamber cannot supply oil, and the oil passage ensures the braking effect. At the same time, the piston pushes the diaphragm to move, and uses the pressure difference balance of the vacuum booster body to push the connecting rod and push plate to move, ensuring that the compensation hole and bypass passage inside the oil circuit valve body are in the passage state.
It realizes that the rear chamber can work normally when the front chamber cannot supply oil, ensures oil passage, ensures that the car can brake, and resets the device to its original state when needed, improving the reliability and safety of the brake device.
Smart Images
Figure CN222629295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brake devices, in particular to a vehicle brake device. Background Art
[0002] With the continuous improvement of living standards, more and more people use cars as a means of transportation. They can drive to travel, go to work, etc. Cars have become an indispensable part of people's lives. Cars travel at a very high speed, but in the event of a crisis, the car needs to be stopped from a high-speed running state. In order to shorten the time of this change, a braking device is provided in the car.
[0003] The braking system is the general term for all braking and deceleration systems installed in a car. Its function is to slow down or stop a moving car, or to keep a stopped car stationary. Since the structure and performance of the braking system are directly related to the safety of the vehicle and personnel, it is considered an important safety part of the car and is widely valued.
[0004] The existing automobile braking device usually uses two sets of brake pads to brake the vehicle during use, and during the braking process, there is a front wheel or rear wheel braking structure with a single valve body oil circuit. If the single valve body oil circuit pipeline is damaged, the vehicle will not be able to brake, and there will be certain safety hazards for the driver when driving the vehicle. Utility Model Content
[0005] The utility model aims to provide a vehicle braking device to solve the problem of utilizing a single valve body oil circuit to perform braking control on a vehicle proposed in the above background technology.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a vehicle braking device, including a vacuum booster body, a control valve body is arranged on one side of the vacuum booster body, a dust cover is arranged on the outer side of the control valve body, a push rod is installed inside the control valve body, a first push plate is connected to one side of the push rod, a piston is arranged on the side of the first push plate away from the push rod, a return spring is installed between the first push plate and the piston, a diaphragm is arranged at one end of the control valve body, a connecting rod is arranged on the inner side of the diaphragm, a vacuum tube is opened on one side of the vacuum booster body, and the vacuum booster body is away from the control An oil circuit valve body is provided on one side of the valve body, and a second push plate is provided inside the oil circuit valve body, one side of the second push plate is connected to a front piston through a connecting rod, one side of the front piston is provided with a rear piston, a return spring is provided between the front piston and the rear piston, and a sealing gasket is provided on one side of the front piston, an oil outlet hole is provided on the outer side of the oil circuit valve body, and a connecting part is connected to the top of the oil circuit valve body, a bypass channel is provided at the bottom of the connecting part, and a compensation hole is provided on one side of the bypass channel, and a brake master pump is installed above the oil circuit valve body, an oil outlet is provided at the bottom of the brake master pump, and one side of the oil outlet hole is connected with a connecting pipe.
[0007] Preferably, the vacuum booster body is fixedly connected to the control valve body, and the control valve body is communicated with the dust cover, the push rod passes through the control valve body and extends to the outside thereof, and the push rod is fixedly connected to the first push plate.
[0008] Preferably, the piston is connected to the first push plate via a connecting rod, a return spring is sleeved on the outer side of the connecting rod, and the return springs are provided in two groups.
[0009] Preferably, the diaphragm is arranged inside the vacuum booster body, the diaphragm divides the vacuum booster body into a first chamber and a second chamber, and a return spring is arranged between the diaphragm and the side wall of the vacuum booster body.
[0010] Preferably, the vacuum booster body is fixedly connected to the oil circuit valve body, and the connecting rod passes through the vacuum booster body and extends to the inside of the oil circuit valve body, the sealing gasket matches the oil circuit valve body, and the sealing gasket is connected to the second push plate through a set connecting rod.
[0011] Preferably, the second push plate is connected to the front piston via a connecting rod, one end of the rear piston is connected to a group of second push plates via the connecting rod, and a return spring is provided between the front piston and the rear piston, and the number of the return springs is two groups.
[0012] Preferably, a return spring is provided between the rear piston and the side wall of the oil circuit valve body, the oil outlet matches the connecting portion, and the oil outlet hole is communicated with the connecting pipe.
[0013] Compared with the prior art, the beneficial effects achieved by the utility model are:
[0014] First, the utility model cooperates with each other through the second push plate, the front piston, the rear piston and the return spring, so that when the front chamber cannot supply oil, the rear chamber can work normally, so that the oil outlet circuit between the second push plate and the front piston can work normally, so as to increase the oil for the brake pad and enable the vehicle to brake. When the rear chamber cannot work, the second push plate and the rear piston can work normally to ensure the passage of oil and the braking effect of the device.
[0015] Second, the utility model pushes the diaphragm to move by the arranged piston, so that air enters the first chamber on one side of the vacuum booster body, so that the pressure in the first chamber is greater than the pressure in the second chamber, and then the push rod can easily push the diaphragm to move, so that the push rod can push the connecting rod to move more effortlessly, so that the connecting rod can drive the second push plate and the piston arranged inside the oil circuit valve body to move, and when resetting is required, the first push plate is pushed to move by the resetting spring, and the movement of the first push plate drives the movement of the piston, so that the piston blocks the air inlet, and then vacuum gas is injected into the vacuum booster body through the vacuum tube, so that the pressure difference between the two chambers inside the vacuum booster body is balanced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model;
[0017] Figure 2 It is a cross-sectional view of the utility model;
[0018] Figure 3 It is a schematic diagram of the connection structure between the oil circuit valve body and the compensation hole of the utility model.
[0019] In the figure: 1. Vacuum booster body; 2. Control valve body; 3. Dust cover; 4. Push rod; 5. First push plate; 6. Piston; 7. Return spring; 8. Diaphragm; 9. Connecting rod; 10. Vacuum tube; 11. Oil circuit valve body; 12. Second push plate; 13. Front piston; 14. Rear piston; 15. Return spring; 16. Sealing gasket; 17. Oil outlet hole; 18. Connecting part; 19. Bypass channel; 20. Compensation hole; 21. Brake master pump; 22. Oil outlet; 23. Connecting pipe. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-Figure 3 A vehicle braking device comprises a vacuum booster body 1, a control valve body 2 is arranged on one side of the vacuum booster body 1, a dust cover 3 is sleeved on the outer side of the control valve body 2, a push rod 4 is installed inside the control valve body 2, a first push plate 5 is connected to one side of the push rod 4, a piston 6 is arranged on the side of the first push plate 5 away from the push rod 4, a return spring 7 is installed between the first push plate 5 and the piston 6, a diaphragm 8 is arranged at one end of the control valve body 2, a connecting rod 9 is arranged on the inner side of the diaphragm 8, a vacuum tube 10 is opened on one side of the vacuum booster body 1, an oil circuit valve body 11 is arranged on the side of the vacuum booster body 1 away from the control valve body 2, and the oil circuit valve body 11 is arranged inside There is a second push plate 12, one side of the second push plate 12 is connected to the front piston 13 through the connecting rod 9, one side of the front piston 13 is provided with a rear piston 14, a return spring 15 is provided between the front piston 13 and the rear piston 14, and one side of the front piston 13 is provided with a sealing gasket 16, an oil outlet hole 17 is provided on the outer side of the oil circuit valve body 11, and the top of the oil circuit valve body 11 is connected to a connecting part 18, a bypass channel 19 is opened at the bottom of the connecting part 18, and a compensation hole 20 is opened on one side of the bypass channel 19, and a brake master pump 21 is installed above the oil circuit valve body 11, the bottom of the brake master pump 21 is provided with an oil outlet 22, and one side of the oil outlet hole 17 is connected to a connecting pipe 23.
[0022] Through the above technical scheme, the second push plate 12, the front piston 13, the rear piston 14 and the return spring 15 cooperate with each other, so that when the front chamber cannot supply oil, the rear chamber can work normally, so that the oil outlet circuit between the second push plate 12 and the front piston 13 can work normally, so as to increase the oil for the brake pads and enable the car to brake. When the rear chamber is not working, the second push plate 12 and the rear piston 14 can work normally to ensure the passage of oil and the braking effect of the device; at the same time, the piston 6 is set to push the diaphragm 8 to move, so that the second push plate 12 and the rear piston 14 on one side of the vacuum booster body 1 can move. Air enters one chamber, making the pressure of the first chamber greater than that of the second chamber, and then the push rod 4 can easily push the diaphragm 8 to move, so that the push rod 4 can push the connecting rod 9 to move more effortlessly, so that the connecting rod 9 can drive the second push plate 12 and the piston arranged inside the oil circuit valve body 11 to move. When resetting is required, the first push plate 5 is pushed to move by the reset spring 7, and the movement of the first push plate 5 drives the piston 6 to move, so that the piston 6 blocks the air inlet, and then vacuum gas is injected into the vacuum booster body 1 through the vacuum tube 10 to balance the pressure difference between the two chambers inside the vacuum booster body 1.
[0023] Specifically, the vacuum booster body 1 is fixedly connected to the control valve body 2, and the control valve body 2 is communicated with the dust cover 3, the push rod 4 passes through the control valve body 2 and extends to the outside thereof, and the push rod 4 is fixedly connected to the first push plate 5.
[0024] Through the above technical scheme, a seal is set between the vacuum booster body 1 and the control valve body 2, the dust cover 3 can effectively prevent dust from entering the control valve body 2, and one end of the push rod 4 is connected to the brake pedal, and the push rod 4 can drive the first push plate 5 to move, so that the movement of the first push plate 5 can push the piston 6 to move.
[0025] Specifically, the piston 6 is connected to the first push plate 5 via a connecting rod 9 , and a return spring 7 is sleeved on the outer side of the connecting rod 9 , and the number of the return springs 7 is two groups.
[0026] Through the above technical solution, the set piston 6 can drive 5 to move, so that the piston 6 can no longer be in an open state of the ventilation hole set inside the control valve body 2, thereby facilitating the air to enter the first chamber set inside the vacuum booster body 1, so that the diaphragm 8 can be pushed to move more effortlessly.
[0027] Specifically, the diaphragm 8 is disposed inside the vacuum booster body 1 , the diaphragm 8 divides the vacuum booster body 1 into a first chamber and a second chamber, and a return spring 7 is disposed between the diaphragm 8 and the side wall of the vacuum booster body 1 .
[0028] Through the above technical solution, the diaphragm 8 is matched with the vacuum booster body 1, so that the diaphragm 8 can push the connecting rod 9 and move in reverse, so that the connecting rod 9 moves to drive the second push plate 12 arranged inside the oil circuit valve body 11 to move, and the reset spring 7 is arranged to push the diaphragm 8 and the piston 6 to reset, so that when the push rod 4 is not pushed to move, the reset spring 7 can push the piston 6 to reset.
[0029] Specifically, the vacuum booster body 1 is fixedly connected to the oil circuit valve body 11, and the connecting rod 9 passes through the vacuum booster body 1 and extends to the inside of the oil circuit valve body 11, the sealing gasket 16 matches the oil circuit valve body 11, and the sealing gasket 16 and the second push plate 12 are connected by the set connecting rod 9.
[0030] Through the above technical solution, the connecting rod 9 is arranged to facilitate pushing the second push plate 12 arranged inside the oil circuit valve body 11 to move, so that the connecting rod 9 can push the second push plate 12 to move, so that the second push plate 12 can push the front piston 13 to move, so that the front piston 13 and the second push plate 12 can put the compensation hole 20 opened on the upper surface of the oil circuit valve body 11 into a passage state.
[0031] Specifically, the second push plate 12 is connected to the front piston 13 through a connecting rod 9, one end of the rear piston 14 is connected to a group of second push plates 12 through the connecting rod 9, and a return spring 15 is provided between the front piston 13 and the rear piston 14, and the number of the return springs 15 is two groups.
[0032] Through the above technical solution, the front piston 13 and the rear piston 14 cooperate with each other, so that the oil holes can be in a ventilated state under different conditions, and the return spring 15 is convenient for pushing the front piston 13 and the rear piston 14 to move, so that the front piston 13 and the rear piston 14 can be reset.
[0033] Specifically, a return spring 15 is provided between the rear piston 14 and the side wall of the oil circuit valve body 11 , the oil outlet 22 matches the connecting portion 18 , and the oil outlet hole 17 is communicated with the connecting pipe 23 .
[0034] Through the above technical solution, the oil outlet hole 17 is provided to facilitate the oil to flow out from the inside of the oil circuit valve body 11, the oil outlet hole 17 is connected to the connecting pipe 23, and the oil outlet port 22 is provided to be connected to the connecting part 18, so as to facilitate the oil to slide into the inside of the oil circuit valve body 11.
[0035] During use, when the vehicle needs to be braked, the brake pad is pressed downward, and then the brake pad pushes the push rod 4 to move, so that the push rod 4 moves inside the control valve body 2, and the push rod 4 moves to push the first push plate 5 to move, so that the first push plate 5 pushes the piston 6 to move, and the piston 6 moves to open the air channel inside the control valve body 2, and then the air enters the first chamber inside the vacuum booster body 1 through the control valve body 2. As the air enters the first chamber, the pressure is greater than the pressure of the second chamber, so that the diaphragm 8 connected to one end of the piston 6 is more labor-saving to push, so that the diaphragm 8 moves to push the connecting rod 9 on one side to move, so that the connecting rod 9 pushes the second push plate 12 to move, and the second push plate 12 moves to drive the front piston 1 3 moves, so that the front piston 13 compresses the return spring 15. At this time, the compensation hole 20 and the connecting part 18 inside the oil circuit valve body 11 are in a passage. Under the action of oil pressure and the elastic force of the return spring 15, the second push plate 12 and the rear piston 14 are pushed to move, so that the compensation hole 20 and the bypass channel 19 between the second push plate 12 and the rear piston 14 are in a passage state, so that the oil can enter the inside of the connecting pipe 23 through the oil outlet hole 17, so as to increase the oil on the brake pad and brake the vehicle. When the device needs to be reset, the push rod 4 is released. Under the elastic force of the reset spring 7 and the return spring 15, the piston 6 and the front piston 13 and the rear piston 14 are pushed to reset, so that the device returns to its original state.
[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A vehicle braking device, comprising a vacuum booster body (1), characterized in that: A control valve body (2) is provided on one side of the vacuum booster body (1), a dust cover (3) is provided on the outer side of the control valve body (2), a push rod (4) is installed inside the control valve body (2), a first push plate (5) is connected to one side of the push rod (4), a piston (6) is provided on the side of the first push plate (5) away from the push rod (4), a return spring (7) is installed between the first push plate (5) and the piston (6), a diaphragm (8) is provided at one end of the control valve body (2), a connecting rod (9) is provided on the inner side of the diaphragm (8), a vacuum tube (10) is provided on one side of the vacuum booster body (1), an oil circuit valve body (11) is provided on the side of the vacuum booster body (1) away from the control valve body (2), a second push plate (12) is provided inside the oil circuit valve body (11), One side of the second push plate (12) is connected to a front piston (13) via a connecting rod (9), one side of the front piston (13) is provided with a rear piston (14), a return spring (15) is provided between the front piston (13) and the rear piston (14), and one side of the front piston (13) is provided with a sealing gasket (16), an outer side of the oil circuit valve body (11) is provided with an oil outlet hole (17), and the top of the oil circuit valve body (11) is connected with a connecting portion (18), a bypass channel (19) is provided at the bottom of the connecting portion (18), and a compensation hole (20) is provided on one side of the bypass channel (19), and a brake master pump (21) is installed above the oil circuit valve body (11), an oil outlet (22) is provided at the bottom of the brake master pump (21), and one side of the oil outlet hole (17) is connected with a connecting pipe (23).
2. A vehicle braking device according to claim 1, characterized in that: The vacuum booster body (1) is fixedly connected to the control valve body (2), and the control valve body (2) is connected to the dust cover (3). The push rod (4) passes through the control valve body (2) and extends to the outside thereof, and the push rod (4) is fixedly connected to the first push plate (5).
3. A vehicle braking device according to claim 1, characterized in that: The piston (6) and the first push plate (5) are connected via a connecting rod (9), and a return spring (7) is sleeved on the outer side of the connecting rod (9), and the number of the return springs (7) is two groups.
4. A vehicle braking device according to claim 1, characterized in that: The diaphragm (8) is arranged inside the vacuum booster body (1), the diaphragm (8) divides the vacuum booster body (1) into a first chamber and a second chamber, and a return spring (7) is arranged between the diaphragm (8) and the side wall of the vacuum booster body (1).
5. A vehicle braking device according to claim 1, characterized in that: The vacuum booster body (1) is fixedly connected to the oil circuit valve body (11), and a connecting rod (9) penetrates the vacuum booster body (1) and extends into the oil circuit valve body (11), the sealing gasket (16) matches the oil circuit valve body (11), and the sealing gasket (16) and the second push plate (12) are connected via a provided connecting rod (9).
6. A vehicle braking device according to claim 1, characterized in that: The second push plate (12) is connected to the front piston (13) via a connecting rod (9), one end of the rear piston (14) is connected to a group of second push plates (12) via the connecting rod (9), and a return spring (15) is provided between the front piston (13) and the rear piston (14), and the number of the return springs (15) is two groups.
7. A vehicle braking device according to claim 6, characterized in that: A return spring (15) is provided between the rear piston (14) and the side wall of the oil circuit valve body (11); the oil outlet (22) matches the connecting portion (18); and the oil outlet hole (17) is communicated with the connecting pipe (23).