An integrated trailer brake valve with solenoid valve assembly and vehicle

Abstract

The application relates to the field of electromagnetic valve assemblies, and discloses an integrated trailer brake valve with an electromagnetic valve assembly and a vehicle, which comprises a valve body, a piston assembly (18) arranged in the valve body, the piston assembly (18) divides a cavity into an A cavity (1) and a B cavity (2), an air inlet and the B cavity (2) are in communication and disconnected through an air inlet valve port (3), the piston assembly (18) is used for controlling the opening and closing of the air inlet valve port (3) and an air outlet valve port (4), the air inlet valve port (3) and the air outlet valve port (4) are always one open and one closed in the working state; the B cavity (2) is in communication with an air outlet (22), and the assembly further comprises a control port (42), the control port (42) controls the pressure of the A cavity (1) through on-off electricity control of a control electromagnetic valve group (7). The assembly has the advantages of light weight, compact structure, improved response time, automatic adjustment of braking force according to actual vehicle conditions, convenience for pipeline arrangement and installation, cost saving and the like.

Description

Technical Field

[0001] This invention relates to the field of automotive braking, and more particularly to an integrated trailer brake valve assembly with a solenoid valve and a vehicle thereof. Background Technology

[0002] The integrated trailer brake valve assembly with solenoid valve integrates one ABS solenoid regulating valve into the trailer brake valve. This valve features small size, light weight, and compact structure. Traditional trailer brake valves use an external ABS solenoid regulating valve, resulting in low space utilization. The connection between the trailer brake valve and the ABS solenoid regulating valve assembly is made using nylon tubing, which is inconvenient for piping layout and product installation, and also increases the risk of air leakage at the nylon tubing connection joints.

[0003] The applicant's existing patent ZL201610483554.0 - Dual-pipeline trailer brake valve is a prior art design, but this design is not highly integrated and has a complex pipeline design, requiring the use of other components. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing an integrated trailer brake valve assembly with a solenoid valve and a vehicle.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An integrated trailer brake valve assembly with a solenoid valve includes a valve body, within which a piston assembly is disposed. The piston assembly divides the chamber into chamber A and chamber B. An air inlet and chamber B are connected and disconnected via an air inlet valve. The piston assembly controls the opening and closing of the air inlet and exhaust valves. During operation, one air inlet and the other exhaust valve are always open and the other closed. Chamber B is connected to the air outlet. The assembly also includes a control port, which controls the pressure in chamber A by controlling the on / off state of the solenoid valve assembly.

[0007] Preferably, the solenoid valve assembly includes a pressure-holding solenoid valve and a pressure-reducing solenoid valve. The control port enters the pressure-holding solenoid valve through a channel a. The pressure-holding solenoid valve has a channel b. When the pressure-holding solenoid valve is de-energized, channels a and b are connected. When the pressure-holding solenoid valve is energized, it can drive the valve core to block the connection between channels a and b. The solenoid valve assembly also includes a channel c, which is connected to a channel d in the pressure-reducing solenoid valve. Channel d is connected to chamber A through a channel f. The energization and de-energization of the pressure-holding solenoid valve can control the connection and disconnection of channels c and d.

[0008] Preferably, the pressure reducing solenoid valve also has an e-channel, which is connected to the g-channel on the valve body. The g-channel is connected to the air outlet of the valve body. In the initial state, the pressure reducing solenoid valve seals the air outlet of the e-channel, the d-channel and the f-channel are connected, and the f-channel and the e-channel are disconnected. When the pressure reducing solenoid valve is energized, the valve core of the pressure reducing solenoid valve moves to disengage from the seal on the air outlet of the e-channel and simultaneously disconnects the connection between the f-channel and the d-channel. The f-channel and the e-channel are then connected, and the compressed air in chamber A can be discharged from the exhaust port through the e-channel and the g-channel.

[0009] Preferably, the pressure reducing solenoid valve and the pressure holding solenoid valve are arranged in parallel, with channel c located at one end of the pressure reducing solenoid valve and the pressure holding solenoid valve, channel b located inside the stationary iron core of the pressure holding solenoid valve, and channel d located inside the stationary iron core of the pressure reducing solenoid valve. Channels b, c, and d are connected in sequence.

[0010] Preferably, a valve assembly is also included. The compressed air in chamber A can push the piston assembly to move towards the valve assembly. In the initial state, the intake valve is closed, and an exhaust valve is formed between the upper end of the valve assembly and the piston assembly. In the initial state, the exhaust valve is open, and chamber B is connected to the exhaust port through the exhaust valve. In the pressurized state, the pressure in chamber A increases, pushing the piston assembly down to close the exhaust valve, and the valve assembly down to open the intake valve. The intake port of the valve body is connected to chamber B, and chamber B and the exhaust port are disconnected.

[0011] Preferably, it also includes an intake sealing lip, which is fixedly installed in the cavity of the valve body. In the initial state, the valve assembly abuts against the intake sealing lip to form an intake valve port.

[0012] Preferably, the g-channel is located in the inner wall of the valve body.

[0013] Preferably, the solenoid valve assembly is located on the side of the valve body.

[0014] The vehicle is equipped with the aforementioned integrated trailer brake valve assembly with solenoid valve.

[0015] Because the present invention adopts the above technical solution, it has the following significant technical effects:

[0016] Compared with the prior art, the present invention has the following obvious advantages and positive effects: (1) lightweight; (2) compact structure; (3) improved response time; (4) automatic adjustment of braking force according to actual vehicle conditions; (5) convenience for pipeline layout and installation; (6) cost saving. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the assembly.

[0018] Figure 2 yes Figure 1Schematic diagram of the energized state of the pressure-holding solenoid valve.

[0019] Figure 3 yes Figure 1 Schematic diagram of the energized state of the pressure-holding solenoid valve and the pressure-reducing solenoid valve.

[0020] Figure 4 This is a schematic diagram of a structure where the intake valve is closed and the exhaust valve is open.

[0021] Figure 5 This is a schematic diagram of a structure where the exhaust valve is closed and the intake valve is open.

[0022] Figure 6 This is a schematic diagram of the overall structure.

[0023] The technical names of the labels in the attached diagram are as follows: 1-Cavity A, 2-Cavity B, 3-Inlet valve port, 4-Exhaust valve port, 42-Control port, 7-Solenoid valve assembly, 8-Pressure holding solenoid valve, 9-Pressure reducing solenoid valve, 10-Channel a, 11-Channel b, 12-Channel c, 13-Channel d, 14-Channel e, 15-Channel f, 16-Channel g, 17-Channel h, 18-Piston assembly, 19-Valve assembly, 20-Mounting port, 22-Outlet. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] An integrated trailer brake valve assembly with a solenoid valve includes a valve body containing a piston assembly 18. The piston assembly 18 divides the valve body into chamber A1 and chamber B2. An air inlet and chamber B2 are connected and disconnected via an air inlet valve port 3. The piston assembly 18 controls the opening and closing of the air inlet valve port 3 and the exhaust valve port 4, ensuring that one is always open and the other is always closed during operation. Chamber B2 is connected to an air outlet 22. The assembly also includes a control port 42, which controls the pressure in chamber A1 by energizing a solenoid valve assembly 7. Specifically, in this embodiment, the piston assembly 18 is located at the upper part of the valve chamber, and a valve assembly 19 is located at the lower part. Chamber A1 is the space enclosed by the piston assembly 18 and the side wall of the valve chamber. As the pressure in chamber A1 gradually increases, it pushes the piston assembly 18 towards the valve assembly 19. The pressure in chamber A1 comes from compressed air input through the control port 42.

[0027] In this embodiment, the solenoid valve assembly 7 includes a pressure-holding solenoid valve 8 and a pressure-reducing solenoid valve 9. The control port 42 enters the pressure-holding solenoid valve 8 through a channel 10. The pressure-holding solenoid valve 8 has a channel 11 (b). When the pressure-holding solenoid valve 8 is de-energized, channels 10 and 11 are connected. When the pressure-holding solenoid valve 8 is energized, the valve core can block the connection between channels 10 and 11. The solenoid valve assembly 7 also includes a channel 12 (c), which connects to a channel 13 (d) within the pressure-reducing solenoid valve 9. Channel 13 is connected to chamber A 1 through a channel 15 (f). The energization or de-energization of the pressure-holding solenoid valve 8 controls the connection or disconnection between channel 12 and channel 13. The pressure-holding solenoid valve 8 and the pressure-reducing solenoid valve 9 are located on one side of the valve body, which is connected to them via an air passage. In this embodiment, one end of channel a10 is opened on the inner wall of control port 42, and the other end extends to one end of the moving valve core of pressure holding solenoid valve 8. Channel a10 can enter channel b11 through the gap around the moving valve core. Channel b11 is opened in the middle of the iron core of pressure holding solenoid valve 8. Channel d13 is set in the middle of the iron core of pressure reducing solenoid valve 9. Both channel b11 and channel d13 are through cavities.

[0028] In this embodiment, the pressure-reducing solenoid valve 9 is also provided with an e-channel 14, which is connected to a g-channel 16 provided on the valve body. The g-channel 16 is connected to the air outlet 22 of the valve body. In the initial state, the pressure-reducing solenoid valve 9 seals the air outlet of the e-channel 14, the d-channel 13 and the f-channel 15 are connected, and the f-channel 15 and the e-channel 14 are disconnected. When the pressure-reducing solenoid valve 9 is energized, the valve core of the pressure-reducing solenoid valve 9 moves to disengage from the seal on the air outlet of the e-channel 14, while simultaneously disconnecting the connection between the f-channel 15 and the d-channel 13. The f-channel 15 and the e-channel 14 are now connected, and the compressed air in chamber A1 can be discharged from the exhaust port through the e-channel 14 and the g-channel 16. In this scheme, the solenoid valve group 7 is sealed and installed on the valve body. The valve body has two installation ports 20, which are respectively matched and installed with the moving valve core and return spring of the pressure-holding solenoid valve 8 and the moving valve core and return spring of the pressure-reducing solenoid valve 9. The f port is connected to the mounting port 20, and the g channel 16 is located at the bottom of the mounting port 20 where the pressure reducing solenoid valve 9 is installed.

[0029] In this embodiment, the pressure-reducing solenoid valve 9 and the pressure-holding solenoid valve 8 are arranged in parallel. Channel c 12 is located at one end of the pressure-reducing solenoid valve 9 and the pressure-holding solenoid valve 8. Channel b 11 is located inside the stationary iron core of the pressure-holding solenoid valve 8. Channel d 13 is located inside the stationary iron core of the pressure-reducing solenoid valve 9. Channel b 11, channel c 12, and channel d 13 are connected in sequence. The system also includes a valve assembly 19. Compressed air in chamber A 1 can push piston assembly 18 to move towards valve assembly 19. Initially, the inlet valve 3 is closed. An exhaust valve 4 is formed between the upper end of valve assembly 19 and piston assembly 18. The exhaust valve 4 is initially open, and chamber B 2 is connected to the exhaust port through exhaust valve 4. In the pressurized state, the pressure in chamber A 1 increases, pushing piston assembly 18 down to close exhaust valve 4. Valve assembly 19 moves down to open inlet valve 3, and the inlet of the valve body is connected to chamber B 2. Chamber B 2 is disconnected from the exhaust port.

[0030] Specifically, to clearly indicate the intake valve port 3, an intake sealing lip is also included. The intake sealing lip is fixedly installed in the cavity of the valve body. In the initial state, the valve assembly 19 abuts against the intake sealing lip to form the intake valve port 3. In this embodiment, the g-channel 16 is arranged vertically in the inner wall of the valve body. The solenoid valve assembly 7 is located on the side of the valve body.

[0031] Its working process is as follows:

[0032] Pressure boosting process: When the vehicle applies the brakes, the trailer solenoid valve is not energized. The air pressure at the outlet 22 of the ABS relay valve enters through the control port 42. The air pressure at the control port 42 passes through channel a 10, channel b 11, channel c 12, channel d 13, and channel f 15 into chamber A 1, and pushes the piston assembly 18 down, opening the intake valve port 3 and closing the exhaust valve port 4, so that the compressed air from the intake port enters chamber B 2 and exits from the outlet 22.

[0033] Pressure holding process: When the vehicle is braked, the trailer solenoid valve is not energized. Air pressure from the ABS relay valve outlet 22 enters through the control port 42. The air pressure from the control port 42 passes through channels a 10, b 11, c 12, d 13, and f 15 into chamber A 1, pushing the piston assembly 18 downward, opening the intake valve port 3, and closing the exhaust valve port 4, allowing compressed air from the intake port to enter chamber B 2 and exit from the outlet 22. When the pressure holding solenoid valve 8 is energized, channel a 10 closes, cutting off the intake and keeping the air pressure at the outlet 22 constant.

[0034] Pressure Reduction Process: When the vehicle applies the brakes, the solenoid valve is not energized. Air pressure from the ABS relay valve outlet 22 enters through control port 42. This pressure then passes through channels a 10, b 11, c 12, d 13, and f 15 into chamber A 1, pushing the piston assembly 18 downwards. This opens the intake valve 3 and closes the exhaust valve 4, allowing compressed air from intake port 11 to enter chamber B 2 and exit through outlet 22. When the pressure-holding solenoid valve 8 is energized, intake channel a 10 closes, cutting off intake and maintaining a constant pressure at outlet 22. When braking force needs to be reduced, the pressure-reducing solenoid valve 9 is energized, opening the exhaust valve. Compressed air in chamber A 1 exits through channels f 15, e 14, g 16, and h 17, reducing the pressure at outlet 22.

[0035] Example 2

[0036] The difference between this embodiment and embodiment 1 is that the air outlet 22 is located at the lower end of the valve assembly 19.

[0037] Example 3

[0038] The vehicle is equipped with the aforementioned integrated trailer brake valve assembly with solenoid valve.

Claims

1. An integrated trailer brake valve assembly with a solenoid valve, characterized in that: The valve body includes a piston assembly (18) which divides the chamber into chamber A (1) and chamber B (2). The air inlet and chamber B (2) are connected and disconnected by the air inlet valve (3). The piston assembly (18) is used to control the opening and closing of the air inlet valve (3) and the exhaust valve (4). The air inlet valve (3) and the exhaust valve (4) are always one open and one closed when in operation. Chamber B (2) is connected to the air outlet (22). The valve body also includes a control port (42). The control port (42) controls the pressure of chamber A (1) by controlling the on and off of the solenoid valve group (7). The solenoid valve assembly (7) includes a pressure-holding solenoid valve (8) and a pressure-reducing solenoid valve (9). The control port (42) enters the pressure-holding solenoid valve (8) through the set a channel (10). The pressure-holding solenoid valve (8) is provided with a b channel (11). When the pressure-holding solenoid valve (8) is de-energized, the a channel (10) and the b channel (11) are connected. When the pressure-holding solenoid valve (8) is energized, it drives the valve core to block the connection between the a channel (10) and the b channel (11). The solenoid valve assembly (7) also includes a c channel (12). The c channel (12) is connected to the d channel (13) set in the pressure-reducing solenoid valve (9). The d channel (13) is connected to the A chamber (1) through the set f channel (15). The energization and de-energization of the pressure-holding solenoid valve (8) controls the connection between the c channel (12) and the d channel (13). The pressure reducing solenoid valve (9) is also provided with an e channel (14), which is connected to the g channel (16) provided on the valve body. The g channel (16) is connected to the air outlet (22) of the valve body. In the initial state, the pressure reducing solenoid valve (9) seals the air outlet of the e channel (14), the d channel (13) and the f channel (15) are connected, and the f channel (15) and the e channel (14) are disconnected. When the pressure reducing solenoid valve (9) is energized, the valve core of the pressure reducing solenoid valve (9) moves to disengage from the seal on the air outlet of the e channel (14) and disconnects the connection between the f channel (15) and the d channel (13). The f channel (15) and the e channel (14) are connected, and the compressed air in chamber A (1) is discharged from the exhaust port through the e channel (14) and the g channel (16).

2. The integrated trailer brake valve assembly with solenoid valve according to claim 1, characterized in that: The pressure reducing solenoid valve (9) and the pressure holding solenoid valve (8) are arranged in parallel. The c channel (12) is located at one end of the pressure reducing solenoid valve (9) and the pressure holding solenoid valve (8). The b channel (11) is located inside the stationary iron core of the pressure holding solenoid valve (8). The d channel (13) is located inside the stationary iron core of the pressure reducing solenoid valve (9). The b channel (11), c channel (12) and d channel (13) are connected in sequence.

3. The integrated trailer brake valve assembly with solenoid valve according to claim 1, characterized in that: It also includes a valve assembly (19). The compressed air in chamber A (1) pushes the piston assembly (18) to move toward the valve assembly (19). In the initial state, the inlet valve port (3) is closed. An exhaust valve port (4) is formed between the upper end of the valve assembly (19) and the piston assembly (18). The exhaust valve port (4) is open in the initial state. Chamber B (2) is connected to the exhaust port through the exhaust valve port (4). In the pressurized state, the pressure in chamber A (1) increases, pushing the piston assembly (18) to move down and close the exhaust valve port (4). The valve assembly (19) moves down and opens the inlet valve port (3). The inlet of the valve body is connected to chamber B (2). Chamber B (2) and the exhaust port are disconnected.

4. An integrated trailer brake valve assembly with solenoid valve according to claim 3, characterized in that: It also includes an intake sealing lip, which is fixedly installed in the cavity of the valve body. In the initial state, the valve assembly (19) abuts against the intake sealing lip to form an intake valve port (3).

5. An integrated trailer brake valve assembly with solenoid valve according to claim 3, characterized in that: The g-channel (16) is located in the inner wall of the valve body.

6. An integrated trailer brake valve assembly with solenoid valve according to claim 1, characterized in that: The solenoid valve assembly (7) is located on the side of the valve body.

7. An integrated trailer brake valve assembly with solenoid valve according to claim 1, characterized in that: The valve body has an installation port (20), and there are two installation ports (20) respectively matching the moving valve core and return spring of the pressure holding solenoid valve (8) and the moving valve core and return spring of the pressure reducing solenoid valve (9).

8. A vehicle, characterized in that: The vehicle is equipped with an integrated trailer brake valve assembly with a solenoid valve as described in any one of claims 1 to 7.

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