A rear axle module assembly

Abstract

The application provides a rear axle module assembly which integrates a relay valve assembly and an ABS electromagnetic valve assembly, and further comprises an ASR valve, a pressure sensor, a yaw angle sensor and a controller (14); the assembly is provided with a control gas port (4) which is used for being connected with a gas brake valve; the assembly is further provided with an air inlet (1), air outlets (21, 22, 23, 24) and air outlets (3, 31); the air inlet (1) is used for being connected with an air reservoir, the air outlets (21, 22, 23, 24) are used for being connected with brake air chambers, and the air outlets (3, 31) are communicated with the outside atmosphere. The assembly has the advantages of simple structure, low cost and light weight.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of brake systems, in particular to a rear axle module assembly. BACKGROUND

[0002] The relay valve is part of the air brake system of the automobile, and in the brake system of the truck, the relay valve shortens the reaction time and the pressure building time. The traditional relay valve with two ABS electromagnetic regulating valves has the problem of low space utilization, and the relay valve and the ABS electromagnetic regulating valve assembly are connected by a nylon pipe, which increases the risk of gas leakage and is not convenient for pipeline arrangement and installation.

[0003] The applicant applied for Chinese patent 201710939590.8 "Integrated relay valve with ABS electromagnetic valve assembly" on October 11, 2017, which connects two gas outlets to the left and right brake air chambers of the automobile, and uses the control of the on-off of the pressure reducing diaphragm mechanism and the pressure maintaining diaphragm mechanism by the pressure reducing electromagnetic valve and the pressure maintaining electromagnetic valve to realize the control of the pressure increasing process, the pressure maintaining process and the pressure reducing process, which can meet the requirements of automobile brake control, and has the advantages of compact structure, fast response time, light weight and low cost.

[0004] However, the electromagnetic valve assembly and the ASR valve need to be connected by a nylon pipe or a joint, which has the risk of gas leakage. SUMMARY

[0005] The present application provides a rear axle module assembly according to the problems of the prior art.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A rear axle module assembly is integrated with a relay valve assembly and an ABS solenoid valve assembly, and further comprises an ASR valve, a pressure sensor, a yaw rate sensor and a controller; the assembly is provided with a control gas port for connecting with a gas brake valve; the assembly is further provided with an air inlet, an air outlet and an exhaust port; the air inlet is connected with an air reservoir, the air outlet is connected with a brake chamber, and the exhaust port is in communication with the atmosphere; the control gas port is in communication with cavity one through channels one, two, three, four and five provided in the valve body; a piston is arranged in cavity one, and the piston can control the opening and closing of the valve assembly under the action of compressed air in cavity one, thereby controlling the opening and closing of the exhaust valve port; the air inlet is connected to cavity two, and cavity two and cavity three arranged in the valve body are controlled to be connected or disconnected through an air inlet valve port; the air inlet valve port is controlled to be opened or closed by the piston through the valve assembly; when the piston moves downward to open the air inlet valve port, the exhaust valve port is closed; cavity three is in communication with four gas paths, which are composed of two paths symmetrically arranged on the left and right sides; taking the left side channel as an example, the first path is connected to cavity four through channel five provided, cavity four is divided into two paths, one of which is connected to the air outlet, and the other is connected to cavity five through channel six; the upper end of cavity five is provided with a diaphragm assembly one, and the upper part of the diaphragm assembly one is connected to cavity six; the diaphragm assembly one can control the communication between cavity five and cavity six; cavity six reaches the air outlet through channel seven of one of the gas paths; cavity six is in communication with cavity eight through channel seven; the second path of cavity four is connected to cavity seven through channels eight and nine; cavity seven is in communication with two gas paths, one of which is connected to cavity nine through channels ten, eleven and twelve; the lower end of cavity nine is provided with a diaphragm assembly; the diaphragm assembly controls the connection or disconnection between cavity eight and cavity four; the compressed air in cavity nine can control the opening and closing of diaphragm assembly two; the other path of cavity seven is connected to cavity ten through channel thirteen.

[0008] As a preferred, the ABS solenoid valve comprises a pressure maintaining solenoid valve and a pressure reducing solenoid valve; the pressure maintaining solenoid valve comprises a coil assembly one and a valve core; channel thirteen is arranged in the valve core, and channel thirteen is in communication with channel fourteen in the initial state; the coil assembly one is powered to drive the valve assembly two to move upward, so that cavity ten is in communication with channel fourteen, channel fourteen is cut off from channel thirteen, cavity ten is connected to cavity eleven through channel fourteen and channel fifteen, the lower end of cavity eleven is provided with a diaphragm assembly, cavity five is in communication with cavity six in the initial state, and the compressed air in cavity eleven can act on the diaphragm assembly to cut off the communication between cavity five and cavity six.

[0009] As a preferred, the pressure reducing solenoid valve is a normally open valve, comprising a coil assembly two and a valve assembly three; in the initial state, cavity twelve is cut off from channel eleven, and channel ten is in communication with channel eleven; in the powered state, the valve assembly three moves downward under the driving of the coil assembly, so that cavity twelve is in communication with channel eleven, channel ten is cut off from channel eleven, and cavity nine is connected to the exhaust port through channel twelve, channel eleven, cavity twelve, channel sixteen and cavity four.

[0010] As preferred, when the air pressure in cavity nine is reduced, the diaphragm assembly is moved up under the action of cavity eight, so as to connect cavity four and cavity eight, and connect cavity eight and the air outlet, and the compressed air in the air outlet can enter cavity eight, cavity four and the air outlet through the set channel seven.

[0011] As preferred, the air pressure sensor is arranged on the air path of the control air port for collecting the inlet air pressure of the control air port.

[0012] As preferred, the ASR valve comprises a coil assembly four and a valve assembly, the Z cavity and the channel four are connected or disconnected through the valve assembly, and when the coil assembly four is electrified, the valve assembly moves downward, the Z cavity is connected with the channel four, and the channel four is disconnected with the channel three, and the inlet air port is connected with cavity two, h channel, g channel, Z cavity, channel four and cavity one.

[0013] As preferred, the yaw rate sensor is integrated on the control unit.

[0014] As preferred, the assembly comprises an upper cover, a base, a valve body and a lower body, the relay valve assembly is arranged on the lower body, the ABS electromagnetic valve, the relay valve and the air port are connected or disconnected through the cavities arranged in the valve body and the air path channels, and the inlet air port, the air outlet and the air outlet are arranged on the lower body.

[0015] The scheme has the following beneficial effects:

[0016] Compared with the prior art, the present application has the following obvious advantages and positive effects: (1) light weight; (2) compact structure; (3) improved response time; (4) convenience for pipeline arrangement and installation; (5) cost saving. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] Figure 2 is a sectional view of the assembly.

[0019] Figure 3 is a sectional view of the assembly.

[0020] Figure 4 is a sectional view of the assembly.

[0021] Figure 5 is a sectional view of the assembly.

[0022] Figure 6 is a sectional view of the assembly. DETAILED DESCRIPTION

[0023] Example 1

[0024] A rear axle module assembly, which is integrated with a relay valve assembly and an ABS solenoid valve assembly, further comprising an ASR valve, a pressure sensor, a yaw rate sensor and a controller 14; the assembly is provided with a control gas port 4, which is used to be connected with a gas brake valve; the assembly is further provided with an air inlet port 1, air outlet ports 21, 22, 23, 24 and air exhaust ports 3, 31; the air inlet port 1 is used to be connected with an air reservoir, the air outlet ports 21, 22, 23, 24 are used to be connected with brake air chambers, and the air exhaust ports 3, 31 are communicated with the atmosphere; the control gas port is communicated with a cavity one C through a passage one a, a passage two c, a passage three d, a passage four e and a passage five f arranged in the valve body, wherein the valve assembly 27 can control the on-off between the passage three 3d and the passage four e. The assembly comprises an upper cover 1, a base 4, a valve body 39 and a lower body 40, the relay valve assembly is arranged on the lower body 40, the ABS solenoid valve, the relay valve and the gas ports are connected or disconnected through the cavities and gas path passages arranged in the valve body, and the air inlet port 1, the air outlet ports 21, 22, 23, 24 and the air exhaust ports 3, 31 are arranged on the lower body 40. As shown in the figure, the cavities and the gas path passages described below are designed in the base 4, the valve body 39 and the lower body 40.

[0025] The cavity one C is provided with a piston 7, which can control the opening and closing of the valve assembly 19 under the action of compressed air in the cavity one C, thereby controlling the opening and closing of the exhaust valve port; the compressed air in the cavity one C is the driving force for starting the relay valve valve assembly 19, so if it is necessary to open the valve assembly 19, the cavity one C needs to be inflated and pressurized.

[0026] The air inlet port 1 is connected to a cavity two A, which is communicated with a cavity three B arranged in the valve body through an air inlet valve port, the air inlet valve port is controlled to be opened or closed by the piston 7 controlling the valve assembly 19, and when the piston 7 moves downward to open the air inlet valve port, the exhaust valve port is closed; the cavity three B is communicated with four gas paths, which are composed of two gas paths symmetrically arranged on the left and right sides; taking the left side passage as an example, it comprises a first path through a passage five y to communicate with a cavity four H, the cavity four H is divided into two paths, one of which is communicated with an air outlet port 23, and the other is communicated with a cavity five X through a passage six x; the upper end of the cavity five X is provided with a diaphragm assembly one 33, the diaphragm assembly one 33 is connected to a cavity six F above, the diaphragm assembly one 33 can control the communication between the cavity five X and the cavity six F, the cavity six F reaches an air outlet port 21 through a designed passage seven z through one of the gas paths, and the cavity six F is communicated with a cavity eight G through the passage seven z; the second path of the cavity four H is communicated with a cavity seven J through a passage eight m and a passage nine n, the cavity seven J is communicated with two gas paths, one of which is communicated with a cavity nine I through a passage ten o, a passage eleven p and a passage twelve w, the lower end of the cavity nine I is provided with a diaphragm assembly 33, the diaphragm assembly 33 controls the on-off of the cavity eight G and the cavity four H, and the compressed air in the cavity nine I can control the opening and closing of the diaphragm assembly two 33; the other path of the cavity seven J is communicated with a cavity ten D through a passage thirteen u.

[0027] In this embodiment, the ABS solenoid valve includes a pressure maintaining solenoid valve and a pressure reducing solenoid valve. The pressure maintaining solenoid valve includes a coil assembly one XQ1 and a valve core, and a passage thirteen j is arranged in the valve core. The passage thirteen j is in communication with a passage fourteen i in the initial state. The coil assembly one XQ1 is energized to drive the valve assembly two 27 to move upward, so that a cavity ten D is in communication with the passage fourteen i, the passage fourteen i is cut off from the passage thirteen j, and the cavity ten D is in communication with a cavity eleven E through the passage fourteen i and a passage fifteen k. A diaphragm assembly is arranged at the lower end of the cavity eleven E. In the initial state, a cavity five X and a cavity six F are in communication. The compressed air in the cavity eleven E can act on the diaphragm assembly to separate the cavity five X and the cavity six F.

[0028] The pressure reducing solenoid valve is a normally open valve, which includes a coil assembly two XQ2 and a valve assembly three. In the initial state, a cavity twelve K is cut off from a passage eleven p, and the passage ten o is in communication with the passage eleven p. In the energized state, the valve assembly three is driven by the coil assembly XQ2 to move downward, so that the cavity twelve K is in communication with the passage eleven p, the passage ten o is cut off from the passage eleven p, and a cavity nine I is in communication with an exhaust port 31 through a passage twelve w, the passage eleven p, the cavity twelve K, a passage sixteen r, a cavity four H. When the cavity nine I has a reduced air pressure, a diaphragm assembly 33 moves upward under the action of a cavity eight G, so that the cavity four H is in communication with the cavity eight G, the cavity eight G is in communication with an air outlet 21, and the compressed air in the air outlet 21 can enter the cavity eight G, the cavity four H and reach the exhaust port 31 through the arranged passage seven z.

[0029] The air pressure sensor is arranged on the air path of the control air port 4 to collect the inlet air pressure of the control air port 4. The ASR valve includes a coil assembly four XQ3 and a valve assembly 27. The Z cavity and a passage four e are controlled to be in communication or cut off through the valve assembly 27. In the energized state of the coil assembly four XQ3, the valve assembly 27 moves downward, the Z cavity is in communication with the passage four e, the passage four e is cut off from a passage three d, and an air inlet is in communication with a cavity two A, a passage h, a passage g, the Z cavity, the passage four e, a passage five f and a cavity one C. The yaw angle sensor is integrated on the control unit 14.

[0030] The product function principle is as follows:

[0031] Boosting process: the car driving brake, solenoid valve is not electrified, 1 air inlet and air cylinder connected, air brake valve outlet air pressure from the control port 4 into, through the channel a, c, d, e, f, to reach the C cavity and push the piston 7 down, with the valve assembly 19 contact closed exhaust valve, and push the valve assembly 19 down, open the air inlet valve, make the air cylinder compressed air from the air inlet 1 to reach the A cavity, from the A cavity through the air inlet valve, into the B cavity, air pressure is divided into 4 routes about 2 routes, left and right two sides 2 channels are the same, now introduce the left side channel. The first route through the channel y, to reach the H cavity, H cavity is divided into 2 routes, 1 route to 23 mouth, 23 mouth exhaust. Another 1 route through the channel x to reach the X cavity, under the action of air pressure, open the diaphragm assembly 33, enter the F cavity, F cavity is divided into 2 routes, 1 route through the channel z, to reach 21 mouth, 21 mouth exhaust. Another 1 route channel z into G cavity. The second route through the channel m, n, to reach the J cavity, J cavity is divided into 2 routes, 1 route through the channel o, p, w, to reach the I cavity, under the action of the conical spring 31 and air pressure, open the diaphragm assembly pressure reducing solenoid valve, make G cavity and H cavity cut off. Another 1 route J cavity through the channel u, to reach the D cavity.

[0032] Pressure maintaining process: on the basis of the boosting state, XQ1 coil assembly is electrified, under the action of suction, make the valve assembly 27 move up, make D cavity and channel i communicate, channel i and j channel cut off, D cavity air pressure through channel i, k to reach E cavity, under the action of air pressure and conical spring 31, open the diaphragm assembly, so as to cut off the channel between X cavity and F cavity. Make 21 mouth air pressure remain unchanged, left and right two sides state is the same.

[0033] Pressure reducing process: on the basis of the pressure maintaining state, XQ2 coil assembly is electrified, under the action of suction, make the valve assembly 27 move down, make channel o and channel p cut off, channel p and K cavity communicate, I cavity air pressure through channel w, p, K cavity, r, H cavity to reach 31 mouth, so that I cavity air pressure is discharged. Under the action of G cavity air pressure, open the diaphragm assembly 33, make G cavity and H cavity communicate, 21 mouth air pressure through channel z, G cavity, H cavity to reach 31 mouth, make 21 mouth from exhaust port 31, brake release.

[0034] Air pressure sensor function: the car driving brake, solenoid valve is not electrified, 1 air inlet and air cylinder connected, air brake valve outlet air pressure from the control port 4 into, through the channel a, b to reach the air pressure sensor, collect and feedback 4 air pressure value to the controller.

[0035] ASR function: 4 ports without compressed air, 1 port compressed air instead of 4 ports compressed air work, this function with left and right electromagnetic regulating valve can still realize the process of pressure increasing, pressure maintaining, pressure reducing brake. Specific implementation: if the control port 4 without air pressure, the car needs to drive brake, this valve can build pressure actively, that is, the coil assembly XQ3 is electrified, under the action of suction, the valve assembly 27 moves downward, makes Z cavity and channel e communicate, channel e and channel d cut off. The air pressure of 1 port reaches C cavity through A cavity, h, g, Z cavity, e, f, and pushes the piston 7 to move downward, then the working principle is the same as above, that is, the process of pressure increasing, pressure maintaining, pressure reducing; when the car needs to release the brake, the coil assembly XQ3 is de-energized, under the action of spring force, the valve assembly moves upward, makes Z cavity and channel e cut off, channel e and channel d communicate. The air pressure of C cavity is discharged from the air brake valve exhaust port through channel f, e, d, c, a through the control port 4, and the brake is released.

[0036] Yaw angle sensor function, integrated in the control unit 14, provides the ECU with real-time X / Y axis acceleration and Z axis angular velocity values of the vehicle.

Claims

1. A rear axle module assembly characterized by: The integrated relay valve assembly and ABS solenoid valve assembly further include an ASR valve, a pressure sensor, a yaw angle sensor and a control unit (14); the assembly is provided with a control gas port (4) for connecting with a gas brake valve; the assembly is further provided with an air inlet (1), an air outlet and an air exhaust port; the air inlet (1) is used for connecting with a gas reservoir, the air outlet is used for connecting with a brake chamber, and the air exhaust port is communicated with the atmosphere; The control gas port is communicated with the cavity one (C) through a passage one (a), a passage two (c), a passage three (d), a passage four (e) and a passage five (f) arranged in the valve body, the piston (7) is arranged in the cavity one (C), and the piston (7) controls the opening and closing of the valve assembly (19) under the action of compressed air in the cavity one (C), so as to control the opening and closing of the exhaust valve port; The air inlet is connected to a cavity two (A), the cavity two (A) and a cavity three (B) arranged in the valve body are controlled to be connected or disconnected through an air inlet valve port, the air inlet valve port is controlled to be opened or closed through the piston (7) and the valve assembly (19), and when the piston (7) moves downward to open the air inlet valve port, the exhaust valve port is closed; The cavity three (B) is communicated with four air paths and is composed of two air paths symmetrically arranged on the left and right sides; taking the left side passage as an example, the first path is communicated with a cavity four (H) through a passage five (f) arranged, the cavity four (H) is divided into two paths, one of which is communicated with a third air outlet (23), and the other of which is communicated with a cavity five (X) through a passage six (x), an upper end of the cavity five (X) is provided with a diaphragm assembly one (33), an upper portion of the diaphragm assembly one (33) is connected to a cavity six (F), the diaphragm assembly one (33) controls the communication between the cavity five (X) and the cavity six (F), the cavity six (F) reaches a first air outlet (21) through a passage seven (z) of one of the air paths, and the cavity six (F) is communicated with a cavity eight (G) through the passage seven (z); the second path of the cavity four (H) is communicated with a cavity seven (J) through a passage eight (m) and a passage nine (n), the cavity seven (J) is communicated with two air paths, one of which is communicated with a cavity nine (I) through a passage ten (o), a passage eleven (p) and a passage twelve (w), a lower end of the cavity nine (I) is provided with a diaphragm assembly two, the diaphragm assembly two controls the connection and disconnection between the cavity eight (G) and the cavity four (H), and compressed air in the cavity nine (I) controls the opening and closing of the diaphragm assembly two; the other path of the cavity seven (J) is communicated with a cavity ten (D) through a passage thirteen (j); The ABS solenoid valve includes a pressure maintaining solenoid valve and a pressure reducing solenoid valve, the pressure maintaining solenoid valve includes a coil assembly one (XQ1) and a valve core, the valve core is provided with a passage thirteen (j), the passage thirteen (j) is communicated with a passage fourteen (i) in an initial state, the coil assembly one (XQ1) is powered to drive a valve assembly (27) to move upward, so that the cavity ten (D) is communicated with the passage fourteen (i), the passage fourteen (i) is cut off from the passage thirteen (j), the cavity ten (D) is communicated with a cavity eleven (E) through the passage fourteen (i) and a passage fifteen (k), a lower end of the cavity eleven (E) is provided with a diaphragm assembly, the cavity five (X) and the cavity six (F) are communicated in an initial state, and compressed air in the cavity eleven (E) acts on the diaphragm assembly to separate the cavity five (X) and the cavity six (F); The ASR valve comprises a coil assembly four (XQ3) and a valve assembly (27), and the Z cavity and the passage four (e) are controlled to be connected or disconnected through the valve assembly (27). When the coil assembly four (XQ3) is powered on, the valve assembly (27) moves downward, the Z cavity is communicated with the passage four (e), the passage four (e) and the passage three (d) are disconnected, and the air inlet is communicated with the cavity two (A), the h passage, the g passage, the Z cavity, the passage four (e), the cavity one (C) and the air outlet.

2. A rear axle module assembly according to claim 1, characterized in that: The pressure reducing electromagnetic valve is a normally open valve, comprising a coil assembly two (XQ2) and a valve assembly three. In the initial state, the cavity twelve (K) and the passage eleven (p) are disconnected, and the passage ten (o) and the passage eleven (p) are communicated. In the powered-on state, the valve assembly three moves downward under the driving of the coil assembly two (XQ2), so that the cavity twelve (K) and the passage eleven (p) are communicated, the passage ten (o) and the passage eleven (p) are disconnected, the cavity nine (I) is communicated with the air outlet (31) through the passage twelve (w), the passage eleven (p), the cavity twelve (K), the passage sixteen (r) and the cavity four (H).

3. A rear axle module assembly according to claim 2, characterized in that: When the pressure in the cavity nine (I) decreases, the diaphragm assembly two moves upward under the action of the cavity eight (G), so that the cavity four (H) and the cavity eight (G) are communicated, the cavity eight (G) and the first air outlet (21) are communicated, and the compressed air in the first air outlet (21) enters the cavity eight (G), the cavity four (H) and the air outlet (31) through the passage seven (z).

4. A rear axle module assembly according to claim 3, characterized in that: The air pressure sensor is arranged on the air path of the control air port (4) and used for collecting the inlet air pressure of the control air port (4).

5. The rear axle module assembly of claim 1, wherein: The yaw angle sensor is integrated on the control unit (14).

6. A rear axle module assembly according to claim 1, characterized in that: The assembly comprises an upper cover, a base, a valve body (39) and a lower body (40). The relay valve assembly is arranged on the lower body (40). The ABS electromagnetic valve, the relay valve and the air port are communicated or disconnected through the cavities arranged in the valve body and the air path passages. The air inlet (1), the air outlet and the air outlet are arranged on the lower body (40).

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