All-terrain four-wheel vehicle integrated foot brake master pump proportional valve

Abstract

The utility model provides a kind of all-terrain four-wheeler integrated foot brake main pump proportional valve, belong to automobile valve technical field.It solves the problem that independent proportional valve occupies additional installation space in the braking system of existing all-terrain vehicle, and does not adapt to the compact design trend of all-terrain vehicle;Split design needs additional pipeline connection, increases brake fluid leakage risk, and assembly process is complex, and production cost is high problem.This all-terrain four-wheeler integrated foot brake main pump proportional valve, including valve body, is located at the valve body center position and is provided with valve cavity, and the valve cavity is composed of first stage valve cavity, second stage valve cavity and third stage valve cavity, the valve cavity is installed with piston, the one end of piston is conical, reset spring with reset function is sleeved in piston conical end port.This utility model has the advantages of improving braking effect.

Description

Technical Field

[0001] This utility model belongs to the field of automotive valve technology, and relates to a foot brake master pump proportional valve, and particularly to an integrated foot brake master pump proportional valve for all-terrain four-wheel vehicles. Background Technology

[0002] The foot-operated master cylinder is a core braking device that uses a foot pedal to trigger a hydraulic or pneumatic system, causing military machinery or vehicles to slow down or stop. Its braking effect covers all four wheels, using friction pads and brake discs (drums) to generate braking torque, which is then transmitted to the wheels via a drive shaft to achieve kinetic energy conversion.

[0003] In existing all-terrain vehicle braking systems, the foot brake master cylinder mostly adopts a split design, with the proportioning valve and foot brake pump arranged independently. This structure has the following drawbacks: the independent proportioning valve occupies additional installation space, which is not in line with the trend of compact design in all-terrain vehicles; the split design requires additional piping connections, increasing the risk of brake fluid leakage, and the assembly process is complex, resulting in high production costs. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing an integrated foot brake master pump proportional valve for all-terrain four-wheel vehicles.

[0005] The objective of this utility model can be achieved through the following technical solution: A proportional valve for an integrated foot brake master pump of an all-terrain four-wheel vehicle, characterized in that it includes a valve body, a valve cavity is provided at the center of the valve body, and the valve cavity is composed of a first-stage valve cavity, a second-stage valve cavity and a third-stage valve cavity, a piston is installed in the valve cavity, one end of the piston is conical, a reset spring with a reset function is sleeved at the conical port of the piston, and the reset spring abuts against the third-stage valve cavity, a first oil outlet is provided on the valve body, the third-stage valve cavity is a second oil outlet, an oil passage is provided on the first oil outlet, and the oil passage is interconnected with the second valve cavity.

[0006] In the above-mentioned integrated foot brake master pump proportional valve for all-terrain four-wheel vehicles, a base with a through hole is installed in the first oil outlet hole, and a fixed cover is installed at the end of the first oil outlet hole. The fixed cover has an opening corresponding to the through hole of the base, and an oil outlet bend is provided in the opening.

[0007] In the aforementioned integrated foot brake master pump proportional valve for all-terrain four-wheel vehicles, the valve body is provided with an oil inlet passage, and the oil inlet passage is provided with an oil inlet hole, which is connected to the first-stage valve chamber.

[0008] Compared with existing technologies, this all-terrain four-wheel vehicle features an integrated foot brake master pump proportional valve with a three-stage valve chamber diameter stepped design. When the piston moves, it adjusts the front and rear braking pressure ratio by changing the cross-sectional area to prevent the rear wheel from locking up. The front and rear braking oil circuits are completely isolated by the piston inside the valve body, so that the other oil circuit can still provide braking force when one oil circuit leaks. Attached Figure Description

[0009] Figure 1 This is a 3D view of the integrated foot brake master pump proportional valve of this all-terrain four-wheel vehicle.

[0010] Figure 2 This is a cross-sectional view of the integrated foot brake master pump proportional valve of this all-terrain four-wheel vehicle.

[0011] In the diagram, 1 is the valve body; 2 is the first-stage valve chamber; 3 is the second-stage valve chamber; 4 is the third-stage valve chamber; 5 is the piston; 6 is the return spring; 7 is the first oil outlet; 8 is the second oil outlet; 9 is the oil passage; 10 is the base; 11 is the fixed cover; 12 is the oil outlet bend; 13 is the oil inlet passage; and 14 is the oil inlet. Detailed Implementation

[0012] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0013] like Figure 1 , Figure 2As shown, the integrated foot brake master pump proportional valve of this all-terrain four-wheel vehicle includes a valve body 1. A valve chamber is located at the center of the valve body 1, and the valve chamber is composed of a first-stage valve chamber 2, a second-stage valve chamber 3, and a third-stage valve chamber 4. A piston 5 is installed in the valve chamber. One end of the piston 5 is conical. A reset spring 6 with a reset function is sleeved at the conical end of the piston 5, and the reset spring 6 abuts against the third-stage valve chamber 4. When the brake pedal is not pressed, the piston 5 is in the initial position under the action of the reset spring 6. At this time, the oil passage 9 between the first-stage valve chamber 2, the second-stage valve chamber 3, and the third-stage valve chamber 4 is in a relatively closed state, and the brake fluid does not flow. The valve body 1 is provided with a first oil outlet 7, and the third-stage valve chamber 4 is a second oil outlet 8. An oil passage 9 is provided on the first oil outlet 7, and the oil passage 9 is interconnected with the second valve chamber. When the driver presses the brake pedal, it pushes the master cylinder piston 5 to compress the brake fluid, and the hydraulic fluid enters the first-stage valve chamber 2 through the oil inlet 14. As the hydraulic pressure increases, piston 5 overcomes the spring force of return spring 6 and begins to move under the action of hydraulic pressure. During the movement of piston 5, the channel between the first-stage valve chamber 2 and the second-stage valve chamber 3 is first opened, and brake fluid flows from the first-stage valve chamber 2 into the second-stage valve chamber 3. As piston 5 continues to move, the channel between the second-stage valve chamber 3 and the third-stage valve chamber 4 is also opened, and brake fluid passes through the second-stage and third-stage valve chambers 4 in sequence. At this time, the oil passage 9 on the first oil outlet 7 is connected to the second-stage valve chamber 3, and brake fluid flows through the first oil outlet 7 to some brake wheel cylinders; the third-stage valve chamber 4 serves as the second oil outlet 8, and brake fluid also flows from here to other brake wheel cylinders, thus achieving braking of all four wheels.

[0014] To elaborate further, a base 10 with a through hole is installed inside the first oil outlet 7. A fixing cap 11 is installed at the end of the first oil outlet 7. The fixing cap 11 has an opening corresponding to the through hole of the base 10, and an oil outlet bend 12 is installed inside the opening. The design of the base 10 with the through hole and the oil outlet bend 12 allows for more precise control of the direction and flow of brake fluid. The diameter of the through hole in the base 10 and the bending angle of the oil outlet bend 12 can be adjusted according to the braking requirements of different wheels, achieving independent control of the braking force of each wheel and improving the stability and safety of the braking system.

[0015] To elaborate further, the valve body 1 is provided with an oil inlet passage 13, and the oil inlet passage 13 is provided with an oil inlet hole 14. The oil inlet hole 14 is connected to the first-stage valve chamber 2. The specially provided oil inlet passage 13 and oil inlet hole 14 can ensure that the brake fluid enters the first-stage valve chamber 2 quickly and smoothly, reduce the flow resistance of the brake fluid, and improve the response speed of the braking system.

[0016] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0017] Although this document frequently uses terms such as valve body 1, first-stage valve chamber 2, second-stage valve chamber 3, third-stage valve chamber 4, piston 5, return spring 6, first oil outlet 7, second oil outlet 8, oil passage 9, base 10, fixing cover 11, oil outlet bend 12, oil inlet passage 13, and oil inlet hole 14, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A proportional valve for an integrated foot brake master pump on an all-terrain four-wheeled vehicle, characterized in that, The valve includes a valve body (1), and a valve cavity is provided at the center of the valve body (1). The valve cavity is composed of a first-stage valve cavity (2), a second-stage valve cavity (3), and a third-stage valve cavity (4). A piston (5) is installed in the valve cavity. One end of the piston (5) is conical. A reset spring (6) with a reset function is sleeved at the conical port of the piston (5). The reset spring (6) abuts against the third-stage valve cavity (4). A first oil outlet hole (7) is provided on the valve body (1). The third-stage valve cavity (4) is a second oil outlet hole (8). An oil passage (9) is provided on the first oil outlet hole (7). The oil passage (9) is connected to the second valve cavity.

2. The proportional valve for an integrated foot brake master pump of an all-terrain four-wheeled vehicle according to claim 1, characterized in that, A base (10) with a through hole is installed in the first oil outlet hole (7), and a fixing cover (11) is installed at the end of the first oil outlet hole (7). The fixing cover (11) has an opening corresponding to the through hole of the base (10), and an oil outlet bend (12) is provided in the opening.

3. The proportional valve for an integrated foot brake master pump for an all-terrain four-wheeled vehicle according to claim 1, characterized in that, The valve body (1) is provided with an oil inlet channel (13), and the oil inlet channel (13) is provided with an oil inlet hole (14), which is connected to the first stage valve chamber (2).

Images