CBS linkage valve

Abstract

The utility model relates to a CBS linkage valve which comprises a valve body, the valve body is provided with a first cavity, a second cavity and a plunger cavity, the second cavity is communicated with a second input interface and a second output interface, the second input interface is provided with an adapter, the adapter comprises a mounting nut, and the inner diameter of the mounting nut is smaller than that of the second input interface. A plunger cavity is connected with the first cavity and the second cavity, a plunger is movably arranged in the plunger cavity, a partition piece is arranged at the other end of the plunger in the circumferential direction and divides the second cavity into an input cavity and an output cavity, the input cavity is communicated with the oil passing hole, and the output cavity is communicated with the second output connector. The partition piece is provided with a first position and a second position, when the partition piece is located at the first position, the throttling hole is communicated with the output cavity, the partition piece is located between the throttling hole and the oil passing hole, and when the partition piece is located at the second position, the partition piece blocks the throttling hole, the distance between the oil passing hole and the throttling hole is increased, and friction between the partition piece and the hole wall of the oil passing hole in the moving process is avoided.

Description

Technical Field

[0001] The utility model relates to a CBS linkage valve. Background Art

[0002] The Chinese utility model patent with publication number CN212289803U discloses a hydraulic distribution valve for a CBS linkage brake system. When the rear wheel brake master cylinder brakes, part of the brake oil enters the second oil pipe joint through the first oil channel from the first oil pipe joint to brake the rear wheel, and the other part enters the plunger installation cavity to push the plunger assembly to compress the return spring and open the first sealing assembly to a state of abutting against the first oil channel connecting hole, so that the hydraulic oil enters the plunger installation cavity and passes through the second sealing assembly into the front wheel brake cylinder connected to the fourth oil outlet joint to brake the front wheel, thereby achieving braking of the rear wheel and the front wheel at the same time. It is intended to optimize the structural design on this basis. Utility Model Content

[0003] In view of the technical problems existing in the background technology, the utility model aims to provide a CBS linkage valve with optimized structural design, reasonable transmission and less prone to wear of the leather cup.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the CBS linkage valve comprises a valve body, the valve body has a first cavity, a second cavity and a plunger cavity, the first cavity is connected with a first input interface and a first output interface, the second cavity is connected with a second input interface and a second output interface, the second input interface is provided with an adapter, the adapter comprises a mounting nut, the inner diameter of the mounting nut is smaller than the inner diameter of the second input interface, the second input interface is provided with a throttling hole and an oil hole, the plunger cavity connects the first cavity and the second cavity, the cavity wall of the plunger cavity is provided with a groove for installing a first sealing ring, a plunger is movably arranged in the plunger cavity, and one end of the plunger extends into the first cavity The other end of the plunger extends into the second cavity, the other end of the plunger is connected to a spring, the spring is connected to the cavity wall of the second cavity, the other end of the plunger is circumferentially provided with a partition, the partition partitions the second cavity to form an input cavity and an output cavity, the input cavity is connected to the oil hole, the output cavity is connected to the second output interface, the partition has a first position and a second position, when the partition is in the first position, the throttling hole is connected to the output cavity, the partition is located between the throttling hole and the oil hole, when the partition is in the second position, the partition blocks the throttling hole, and the partition moves between the first position and the second position as the plunger moves.

[0005] In this scheme, when the rear wheel is braked, hydraulic pressure is input from the second input interface and transmitted from the second output interface through the throttling hole and the output chamber. At this time, the input chamber and the output chamber are connected, and the partition piece does not move. When the front and rear wheels are linked, hydraulic pressure is input from the first input interface and transmitted from the first output interface. One end of the plunger will be pressurized to compress the spring and transmit the hydraulic pressure from the second output interface through the output chamber. On this basis, hydraulic pressure can also be input from the second input interface and act on the plunger through the partition piece to form a force to compress the spring, thereby increasing the hydraulic pressure transmitted from the second output interface and ensuring sufficient braking force. In order to avoid friction between the partition piece and the wall of the oil hole during movement, the distance between the oil hole and the throttling hole is increased, so that the inner diameter of the second input interface is increased, and an adapter is required to connect with the corresponding oil circuit.

[0006] Preferably, the valve body includes a first shell and a second shell, the first shell has the first cavity and the plunger cavity, the second shell has the second cavity, a second sealing ring is provided between the first shell and the second shell, and the first shell and the second shell are tightly connected.

[0007] In this solution, the plunger will rub against the first sealing ring when it moves, and the valve body is designed to be split, which facilitates the replacement of the first sealing ring.

[0008] Preferably, the distance between the center of the throttling hole and the center of the oil hole is 6.5-7 mm.

[0009] In this solution, 6.5-7mm matches the partition stroke and controls the aperture of the second input interface.

[0010] Preferably, the partition member comprises a leather cup and a pressure-bearing portion, and when the partition member is located at the second position, the leather cup blocks the throttling hole, and the pressure-bearing portion is connected to the input chamber.

[0011] In this solution, the leather cup can effectively block the throttling hole, and the pressure-bearing part is used to withstand the hydraulic pressure of the input chamber on the partition and transmit the hydraulic pressure to the plunger, thereby differentiating the functions to ensure the reliability of blocking and hydraulic transmission.

[0012] Preferably, the plunger is provided with an abutment portion in the circumferential direction, and when the partition member is located at the first position, the abutment portion abuts against the cavity wall of the input cavity.

[0013] In this solution, the plunger abuts against the wall of the input cavity to ensure the compression state of the spring, balancing the plunger stroke and the braking force requirements.

[0014] The beneficial effects of the utility model are that the distance between the oil hole and the throttle hole is increased to avoid friction between the partition member and the oil hole wall during movement; the valve body is split to facilitate the replacement of the first sealing ring; and the functions are differentiated to ensure the reliability of the plugging and hydraulic transmission. Therefore, compared with the prior art, the utility model has substantial characteristics and progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following describes the relevant details and working principles of the implementation methods and embodiments of the present utility model in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is an exploded view of the utility model.

[0018] Figure 3 It is a cross-sectional view of the utility model.

[0019] Figure 4 It is a top view of the utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the plunger in the utility model.

[0021] In the figure: 1. valve body; 2. first chamber; 3. first input interface; 4. first output interface; 5. second chamber; 6. second input interface; 7. second output interface; 8. adapter; 9. mounting nut; 10. throttle hole; 11. oil hole; 12. plunger chamber; 13. groove; 14. plunger; 15. spring; 16. partition; 19. first shell; 20. second shell; 21. second sealing ring; 22. first sealing ring; 23. leather cup; 24. pressure-bearing part; 25. abutment part. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the implementation of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without making creative work based on the embodiments of the utility model are within the scope of protection of the utility model.

[0023] See attached Figure 1-2In the embodiment of the present embodiment, a CBS linkage valve comprises a valve body 1, wherein the valve body 1 comprises a first shell 19 and a second shell 20, wherein the first shell 19 has the first chamber 2 and the plunger 14 chamber 12, wherein the second shell 20 has the second chamber 5, wherein a second sealing ring 21 is arranged between the first shell 19 and the second shell 20, wherein the first shell 19 and the second shell 20 are fastenedly connected, wherein the first chamber 2 is connected with a first input interface 3 and a first output interface 4, wherein the second chamber 5 is connected with a second input interface 6 and a second output interface 7, wherein the second input interface 6 is provided with an adapter 8, wherein the adapter 8 comprises a mounting nut 9, wherein the inner diameter of the mounting nut 9 is smaller than the inner diameter of the second input interface 6, wherein the second input interface 6 is provided with a throttling hole 10 and an oil-passing hole 11, wherein the distance between the center of the throttling hole 10 and the center of the oil-passing hole 11 is 6.5-7 mm, wherein the plunger 14 chamber 12 connects the first chamber 2 and the second chamber 5, wherein the cavity wall of the plunger 14 chamber 12 is provided with a groove 13 for installing the first sealing ring 22, wherein the movable device in ... A plunger 14 is arranged, one end of the plunger 14 extends into the first cavity 2, the other end of the plunger 14 extends into the second cavity 5, the plunger 14 is circumferentially provided with an abutment portion 25, the other end of the plunger 14 is connected to a spring 15, the spring 15 is connected to the cavity wall of the second cavity 5, the other end of the plunger 14 is circumferentially provided with a partition 16, the partition 16 includes a leather cup 23 and a pressure-bearing portion 24, the partition 16 separates the second cavity 5 into an input cavity and an output cavity, the input cavity is connected to the oil hole 11, the pressure-bearing portion 24 is connected to the The input chamber is connected, the output chamber is connected with the second output interface 7, the partition piece 16 has a first position and a second position, when the partition piece 16 is in the first position, the throttle hole 10 is connected with the output chamber, the partition piece 16 is located between the throttle hole 10 and the oil hole 11, the abutment portion 25 abuts against the cavity wall of the input chamber, when the partition piece 16 is in the second position, the leather cup 23 blocks the throttle hole 10, and the partition piece 16 moves between the first position and the second position along with the plunger 14.

[0024] In this embodiment, during installation, the first sealing ring 22 is placed in the groove 13 of the cavity 12 of the plunger 14 of the first housing 19, the spring 15 connected to the other end of the plunger 14 is abutted against the cavity wall of the second cavity 5, and one end of the plunger 14 is extended into the cavity 12 of the plunger 14, the second sealing ring 21 is installed between the first housing 19 and the second housing 20 and the two are fastened and connected, and the adapter 8 is installed on the second input interface 6 for connecting the corresponding oil pipe. When the rear wheel is braked, the hydraulic pressure is input from the second input interface 6 and transmitted from the second output interface 7 through the throttle hole 10 and the output cavity. Out, at this time, the input chamber and the output chamber are connected, the partition 16 will not move, and when the front and rear wheels are linked, the hydraulic pressure is input from the first input interface 3, transmitted from the first output interface 4, and one end of the plunger 14 will be pressurized to compress the spring 15, and the leather cup 23 will block the throttle hole 10, and the hydraulic pressure is transmitted from the second output interface 7 through the output chamber. On this basis, the hydraulic pressure can also be input from the second input interface 6 and the pressure-bearing part 24 acts on the plunger 14 to form a force to compress the spring 15, thereby increasing the hydraulic pressure transmitted from the second output interface 7 and ensuring sufficient braking force.

[0025] The above is a preferred embodiment of the utility model, and it should be noted that the protection scope of the utility model is not limited thereto. For those skilled in the art, without departing from the equivalent inventive concept of the technical scope disclosed by the utility model, several improvements and modifications or equivalent substitutions can be made, which are also regarded as the protection scope of the utility model.

Claims

1. A CBS linkage valve, characterized in that: It comprises a valve body (1), wherein the valve body (1) has A first cavity (2) connected to a first input interface (3) and a first output interface (4); The second cavity (5) is connected to a second input interface (6) and a second output interface (7); the second input interface (6) is provided with an adapter (8); the adapter (8) comprises a mounting nut (9); the inner diameter of the mounting nut (9) is smaller than the inner diameter of the second input interface (6); the second input interface (6) is provided with a throttling hole (10) and an oil hole (11); A plunger (14) cavity (12) is provided in the wall of the plunger (14) cavity (12) with a groove (13) for mounting a first sealing ring (22). A plunger (14) is movably arranged in the plunger (14) cavity (12). One end of the plunger (14) extends into the first cavity (2), and the other end of the plunger (14) extends into the second cavity (5). The other end of the plunger (14) is connected to a spring (15), and the spring (15) is connected to the cavity wall of the second cavity (5). A partition member (16) is circumferentially provided at the other end of the plunger (14), and the partition member (16) seals the The second chamber (5) is partitioned to form an input chamber and an output chamber, the input chamber is in communication with the oil hole (11), and the output chamber is in communication with the second output interface (7). The partition member (16) has a first position and a second position. When the partition member (16) is in the first position, the throttle hole (10) is in communication with the output chamber, and the partition member (16) is located between the throttle hole (10) and the oil hole (11). When the partition member (16) is in the second position, the partition member (16) blocks the throttle hole (10). The partition member (16) moves between the first position and the second position as the plunger (14) moves.

2. A CBS linkage valve according to claim 1, characterized in that: The valve body (1) comprises a first shell (19) and a second shell (20); the first shell (19) has the first chamber (2) and the plunger (14) chamber (12); the second shell (20) has the second chamber (5); a second sealing ring (21) is provided between the first shell (19) and the second shell (20); and the first shell (19) and the second shell (20) are tightly connected.

3. A CBS linkage valve as claimed in claim 1, characterized in that: The distance between the center of the throttling hole (10) and the center of the oil passage hole (11) is 6.5-7 mm.

4. A CBS linkage valve according to claim 1, characterized in that: The partition member (16) comprises a leather cup (23) and a pressure-bearing portion (24); when the partition member (16) is located at the second position, the leather cup (23) blocks the throttling hole (10), and the pressure-bearing portion (24) is connected to the input chamber.

5. A CBS linkage valve as claimed in claim 1, characterized in that: The plunger (14) is provided with an abutment portion (25) in the circumferential direction, and when the partition member (16) is located at the first position, the abutment portion (25) abuts against the cavity wall of the input cavity.

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