Hydraulic balance valve for automobile braking

Abstract

The invention relates to a hydraulic balance valve for automobile braking, and belongs to the field of automobile hydraulic control systems. The hydraulic sealing ring is assembled in the valve body, the piston is in sliding connection with the interior of the valve body, the two springs are assembled on the two sides of the piston respectively, the two output ports of the piston correspond to the two output ports of the valve body respectively, and the sealing bolt is in threaded connection with one end of the adjusting cavity of the valve body through the sealing gasket. The hydraulic control device has the advantages that the structure is novel, the rigidity, free length and other parameters of the spring can be adjusted according to the pressure difference between the input port I and the input port II to adapt to the pressure difference between different input ports, so that the hydraulic control device can automatically adjust the output hydraulic pressure difference and can still be mutually independent; and compared with an electric control hydraulic balance valve, the balance valve is more reliable and lower in cost.

Description

Technical Field

[0001] The invention belongs to the field of automobile hydraulic control systems, and in particular relates to a hydraulic balancing valve for automobile braking. Background Art

[0002] In automotive braking systems, particularly wet brake systems, redundancy requires two independent hydraulic sources operating simultaneously, each providing braking force to a different wheel. An imbalance in the hydraulic pressure generated by these sources can lead to increased braking distance, deviation from the brakes, abnormal tire wear, damage to braking system components, and reduced vehicle stability, seriously impacting safe driving. Therefore, a balancing valve is needed to effectively address the significant pressure differential between the two hydraulic systems, ensuring that the two hydraulic outputs remain independent and within a controlled pressure range. Summary of the Invention

[0003] The invention provides a hydraulic balancing valve for automobile braking, which solves the problem of large pressure difference between two hydraulic sources in an automobile braking system.

[0004] The technical solution adopted by the present invention is to include a valve body, a piston, a hydraulic sealing ring, a spring, a sealing gasket, and a sealing bolt, wherein the hydraulic sealing ring is assembled in the valve body, the piston is slidingly connected to the valve body, two springs are respectively assembled on both sides of the piston, the two output ports of the piston respectively correspond to the two output ports of the valve body, and the sealing bolt is threadedly connected to one end of the valve body regulating chamber through the sealing gasket.

[0005] The valve body includes an input port 1, an adjusting chamber, an output port 1, an output port 2, a hydraulic sealing ring installation groove 1, a hydraulic sealing ring installation groove 2 and a hydraulic sealing ring installation groove 3, wherein the input port, output port 1 and output port 2 are respectively connected to the adjusting chamber, hydraulic sealing ring installation groove 1, hydraulic sealing ring installation groove 2 and hydraulic sealing ring installation groove 3 are respectively installed with hydraulic sealing rings, the adjusting chamber is matched with a sealing gasket and a sealing bolt, and an input port 2 is reserved.

[0006] The piston includes an input chamber 1, a piston output port 1, a piston body, a piston output port 2 and an input chamber 2, wherein the structures of the piston output port 1 and the piston output port 2 are holes on the piston body separated by a certain distance, and the piston output port 1 and the piston output port 2 are respectively located in the input chamber 1 and the input chamber 2.

[0007] The functions of the piston output port 1 and the piston output port 2 are to respectively connect the input port 1 and the output port 1 of the valve body, and connect the input port 2 and the output port 2.

[0008] When the piston is at the left extreme position, the piston output port 1 is within the space between the hydraulic sealing ring 1 and the hydraulic sealing ring 2; when the piston is at the right extreme position, the piston output port 2 is within the space between the hydraulic sealing ring 2 and the hydraulic sealing ring 3.

[0009] The piston output port 1 of the piston must always be connected to the output port 1 of the valve body, and the piston output port 2 must always be connected to the output port 2 of the valve body, and are not affected by the movement of the piston.

[0010] The hydraulic sealing rings include hydraulic sealing ring 1, hydraulic sealing ring 2 and hydraulic sealing ring 3. The cross section of each hydraulic sealing ring is a special-shaped structure, which can withstand high pressure on the left and right sides without leakage.

[0011] The sealing bolt includes a mounting surface, a sealing surface and a second input port, wherein the mounting surface cooperates with the adjusting cavity thread of the valve body so that the sealing bolt can be fixedly connected to the valve body, the sealing surface cooperates with the sealing gasket, and the second input port is used for sealing connection with the hydraulic source output port.

[0012] The advantage of the present invention is its novel structure. The spring stiffness, free length and other parameters can be adjusted according to the pressure difference between input port one and input port two to adapt to the pressure difference of different input ports, so that it can automatically adjust the output hydraulic pressure difference while still being independent of each other. It adopts a mechanical structure and has the advantages of being more reliable and lower cost than the electronically controlled hydraulic balancing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the valve body of the present invention; Figure 3 It is a structural schematic diagram of the piston of the present invention; Figure 4 It is a structural schematic diagram of the hydraulic sealing ring of the present invention; Figure 5 It is a structural schematic diagram of the sealing bolt of the present invention; Figure 6 It is a schematic diagram of the installation of the hydraulic balancing valve of the present invention. DETAILED DESCRIPTION

[0014] like Figure 1 As shown, it includes a valve body 1, a piston 2, a hydraulic sealing ring 3, a spring 4, a sealing gasket 5, and a sealing bolt 6. Three hydraulic sealing rings 3 and two springs 4 are required, wherein the hydraulic sealing ring 3 is assembled in the valve body 1, the piston 2 is slidingly connected to the valve body 1, the two springs 4 are respectively assembled on both sides of the piston 2, the two output ports of the piston 2 respectively correspond to the two output ports of the valve body 1, and the sealing bolt 6 is threadedly connected to one end of the regulating chamber 102 of the valve body 1 through the sealing gasket 5.

[0015] like Figure 2As shown, the valve body 1 includes an input port 101, an adjusting chamber 102, an output port 103, an output port 2 104, a hydraulic sealing ring mounting groove 105, a hydraulic sealing ring mounting groove 2 106 and a hydraulic sealing ring mounting groove 3 107, wherein the input port 101, the output port 103 and the output port 2 104 are respectively connected to the adjusting chamber 102, and the hydraulic sealing ring mounting groove 105, the hydraulic sealing ring mounting groove 2 106 and the hydraulic sealing ring mounting groove 3 107 are respectively installed in the hydraulic sealing ring mounting groove 105, the hydraulic sealing ring mounting groove 2 106 and the hydraulic sealing ring mounting groove 3 107, the adjusting chamber 102 cooperates with the sealing gasket 5 and the sealing bolt 6, and leaves the input port 2 603.

[0016] like Figure 3 As shown, the piston 2 includes an input chamber 1 201, a piston output port 1 202, a piston body 203, a piston output port 2 204 and an input chamber 2 205, wherein the structures of the piston output port 1 202 and the piston output port 2 204 are holes on the piston body 203 spaced a certain distance apart, and the piston output port 1 202 and the piston output port 2 204 are respectively located in the input chamber 1 201 and the input chamber 2 205.

[0017] The functions of the piston output port 1 202 and the piston output port 2 204 are to respectively connect the input port 1 101 and the output port 1 103 of the valve body 1 , and connect the input port 2 603 and the output port 2 104 .

[0018] When the piston 2 is at the left extreme position, the piston output port 1 202 is within the space between the hydraulic sealing ring 1 3-1 and the hydraulic sealing ring 2 3-2. When the piston 2 is at the right extreme position, the piston output port 2 204 is within the space between the hydraulic sealing ring 2 3-2 and the hydraulic sealing ring 3 3-3.

[0019] The piston output port 1 202 of the piston 2 must always be connected to the output port 1 103 of the valve body 1 , and the piston output port 2 204 must always be connected to the output port 2 104 of the valve body 1 , and are not affected by the movement of the piston 2 .

[0020] like Figure 4 As shown, the hydraulic sealing ring 3 includes a hydraulic sealing ring 1 3-1, a hydraulic sealing ring 2 3-2 and a hydraulic sealing ring 3-3. The cross section 301 of each hydraulic sealing ring is a special-shaped structure, which can withstand high pressure on the left and right sides without leakage.

[0021] like Figure 5 As shown, the sealing bolt 6 includes a mounting surface 601, a sealing surface 602 and an input port 2 603, wherein the mounting surface 601 is threadedly engaged with the regulating chamber 102 of the valve body 1 so that the sealing bolt 6 can be fixedly connected to the valve body 1, the sealing surface 602 is engaged with the sealing gasket 5, and the input port 2 603 is used for sealing connection with the hydraulic source output port.

[0022] The assembly method of the present invention is: Input port 1 101 and input port 2 603 are respectively connected to the output ports of two independent hydraulic sources. The connection method can be a sealed connection method such as press-fitting, threading + sealing gasket, or welding. The connection method must meet the requirements of high-pressure and leak-proof design. Output port 1 103 and output port 2 104 are respectively connected to the hydraulic input port of the independent load. The connection method can be a sealed connection method such as press-fitting, threading + sealing gasket, or welding. The connection method must meet the requirements of high-pressure and leak-proof design. The sealing bolt 6 is threadedly engaged with the regulating chamber 102 of the valve body 1. The sealing gasket 5 acts as a seal between the valve body 1 and the sealing bolt 6. The connection between the sealing bolt 6 and the valve body 1 is not limited to a threaded connection and can also be a sealed connection method such as press-fitting or welding. The connection method must meet the requirements of high-pressure and leak-proof design. The three hydraulic sealing rings 3 are respectively assembled into the corresponding hydraulic sealing ring mounting grooves of the valve body 1. The two springs 4 are installed at both ends of the piston 2 and assembled together into the regulating chamber 102 of the valve body 1. The three hydraulic sealing rings 3 cooperate with the piston 2 to divide the regulating chamber 102 of the valve body 1 into four spaces.

[0023] How it works like Figure 6 As shown, the assembled piston 2 can compress the spring 4 in the regulating chamber 102 of the valve body 1 and move laterally. When the piston 2 moves to the left or right extreme position, it will be rigidly limited by the valve body 1 and the sealing bolt 6 respectively. When the piston 2 is at the left extreme position, the piston output port 1 202 of the piston 2 must be within the space between the hydraulic sealing ring 3-1 and the hydraulic sealing ring 3-2. When the piston 2 is at the right extreme position, the piston output port 2 204 of the piston 2 must be within the space between the hydraulic sealing ring 3-2 and the hydraulic sealing ring 3-3.

[0024] Input port 1 101 and input port 2 603 are connected to the output ports of two independent hydraulic sources, respectively. Output port 1 103 and output port 2 104 are connected to the hydraulic input ports of independent loads, respectively. When the hydraulic pressure at input port 1 101 is greater than the hydraulic pressure at input port 2 603, the hydraulic pressure in input port 1 101 will push piston 2 toward input port 2 603 until the hydraulic pressure at output port 1 103 and output port 2 104 is balanced. When the hydraulic pressure at input port 2 603 is greater than the hydraulic pressure at input port 1 101, the hydraulic pressure in input port 2 603 will push piston 2 toward input port 1 101 until the hydraulic pressure at output port 1 103 and output port 2 104 is balanced.

[0025] The present invention can adjust parameters such as the stiffness and free length of the spring 4 according to the pressure difference between the first input port 101 and the second input port 603 to adapt to the pressure difference of different input ports.

Claims

1. A hydraulic balancing valve for automobile braking, characterized by: It includes a valve body, a piston, a hydraulic sealing ring, a spring, a sealing gasket, and a sealing bolt, wherein the hydraulic sealing ring is assembled in the valve body, the piston is slidingly connected to the valve body, two springs are respectively assembled on both sides of the piston, the two output ports of the piston correspond to the two output ports of the valve body respectively, and the sealing bolt is threadedly connected to one end of the valve body regulating chamber through the sealing gasket.

2. The hydraulic balancing valve for automobile brakes according to claim 1, characterized in that: The valve body includes an input port 1, an adjusting chamber, an output port 1, an output port 2, a hydraulic sealing ring installation groove 1, a hydraulic sealing ring installation groove 2 and a hydraulic sealing ring installation groove 3, wherein the input port, output port 1 and output port 2 are respectively connected to the adjusting chamber, hydraulic sealing ring installation groove 1, hydraulic sealing ring installation groove 2 and hydraulic sealing ring installation groove 3 are respectively installed with hydraulic sealing rings, the adjusting chamber is matched with a sealing gasket and a sealing bolt, and an input port 2 is reserved.

3. The hydraulic balancing valve for automobile brakes according to claim 1, characterized in that: The piston includes an input chamber 1, a piston output port 1, a piston body, a piston output port 2 and an input chamber 2, wherein the structures of the piston output port 1 and the piston output port 2 are holes on the piston body separated by a certain distance, and the piston output port 1 and the piston output port 2 are respectively located in the input chamber 1 and the input chamber 2.

4. The hydraulic balancing valve for automobile brakes according to claim 3, characterized in that: The functions of the piston output port 1 and the piston output port 2 are to respectively connect the input port 1 and the output port 1 of the valve body, and connect the input port 2 and the output port 2.

5. The hydraulic balancing valve for automobile brakes according to claim 3, characterized in that: When the piston is at the left extreme position, the piston output port 1 is within the space between the hydraulic sealing ring 1 and the hydraulic sealing ring 2; when the piston is at the right extreme position, the piston output port 2 is within the space between the hydraulic sealing ring 2 and the hydraulic sealing ring 3.

6. The hydraulic balancing valve for automobile brakes according to claim 3, characterized in that: The piston output port 1 of the piston must always be connected to the output port 1 of the valve body, and the piston output port 2 must always be connected to the output port 2 of the valve body, and are not affected by the movement of the piston.

7. The hydraulic balancing valve for automobile brakes according to claim 1, characterized in that: The hydraulic sealing rings include hydraulic sealing ring 1, hydraulic sealing ring 2 and hydraulic sealing ring 3. The cross section of each hydraulic sealing ring is a special-shaped structure, which can withstand high pressure on the left and right sides without leakage.

8. The hydraulic balancing valve for automobile brakes according to claim 1, characterized in that: The sealing bolt includes a mounting surface, a sealing surface and a second input port, wherein the mounting surface cooperates with the adjusting cavity thread of the valve body so that the sealing bolt can be fixedly connected to the valve body, the sealing surface cooperates with the sealing gasket, and the second input port is used for sealing connection with the hydraulic source output port.

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