KR101018985B1 - Hydraulic block of hydraulic assembly and hydraulic assembly comprising such a hydraulic block - Google Patents

Abstract

At least one pump piston-hollow chamber 80 extending along the pump piston axis 82 in the hydraulic block 18, at least one extending to the side of the pump piston axis 82 in the hydraulic block 18. Switching valve used to selectively connect fluid flow between the reservoir-hollow chamber 90 and the pressure cylinder 86 of the main piston 12 of the vehicle brake device 10 and the pump piston 44 of the hydraulic system. The hydraulic block 18 of the hydraulic system of the vehicle brake device 10 with the switching valve-hollow chamber 70 receiving 34 is, according to the present invention, the switching valve-hollow chamber 70 according to the invention. A side of the pump piston axis 82, which is spaced apart from the reservoir-hollow chamber in the cavity.

Hydraulic block, pump piston axis, switching valve, vehicle brake device.

Description

Hydraulic block of hydraulic assembly and hydraulic assembly comprising such a hydraulic block

The invention relates to at least one pump piston-hollow chamber extending along a pump piston axis in a hydraulic block, at least one reservoir-hollow chamber extending on a side of the pump piston axis in a hydraulic block, and a pump piston of a hydraulic device. A hydraulic block of a hydraulic device of a vehicle brake device with a switch valve-hollow chamber containing a switch valve used to selectively connect fluid flow between the pressure side and the main cylinder of the vehicle brake device. The invention also relates to a hydraulic block having a high pressure switch valve-hollow chamber for receiving a high pressure switch valve used for selectively connecting a fluid flow between the suction side of the pump piston of the hydraulic device and the main cylinder of the vehicle brake device. A hydraulic block of the hydraulic device having a motor connection-hollow chamber for receiving a motor connection used to connect the pump motor of the hydraulic device to a control unit of the hydraulic device, and a leak reservoir-hollow chamber for receiving leakage from the pump piston-hollow chamber. To a hydraulic block having The invention also relates to a hydraulic device having a hydraulic block of the above manner.

The above-mentioned hydraulic block and the corresponding hydraulic device are used to selectively supply or discharge from the cylinder wheel the brake fluid under pressure in the known vehicle brake device to the associated wheel cylinder.

In known hydraulic systems, the hydraulic block is a cube metal block, usually an aluminum block, in which a plurality of bores are formed as lines and connections. The bore also forms a pump element such as a pump drive eccentric or a pump piston, and various hollow chambers used to receive valves such as inlet and outlet valves.

In the hydraulic system of a vehicle brake system with a so-called electronic stabilization program (ESP), ie an adjustment system of rotational movement about the vertical axis of the vehicle, the hydraulic system is provided with a so-called switching valve in addition to the inlet and outlet valves for the wheel cylinders. High pressure switching valve is arranged. By means of a switching valve a fluid flow is selectively connected between the main cylinder of the vehicle brake device and the pressure side of the pump piston of the hydraulic device. The high pressure diverter valve is used to selectively connect fluid flow between the main cylinder of the vehicle brake system and the suction side of the pump piston of the hydraulic system. Further, in the known hydraulic device, a hydraulic reservoir is arranged in the hydraulic block to the control unit of the hydraulic device, the motor connection used to electrically connect the pump motor of the hydraulic device, and the leak reservoir used to receive leakage from the pump piston-hollow chamber. Leakage can exit the pump piston to reach the eccentric actuator-hollow chamber, from which it can be discharged into the leak reservoir.

It is an object of the present invention to improve the hydraulic device and in particular the hydraulic block of the hydraulic device in order to be able to provide more functions when it takes up less installation space or is the same size.

According to the invention, this object is achieved by a hydraulic block of a hydraulic device of the vehicle brake device according to claims 1, 2, 5, and 6. Advantageous refinements of the hydraulic block according to the invention are described in claims 3 and 4. This object is also achieved by a hydraulic device according to claim 7.

According to the invention, at least one pump piston-hollow chamber extending along the pump piston axis in the hydraulic block, at least one reservoir-hollow chamber extending at the side of the pump piston axis in the hydraulic block, and the pump piston of the hydraulic device The hydraulic block of the hydraulic device of the hydraulic device of the vehicle brake device with a switching valve-hollow chamber for receiving a switching valve used to selectively connect the fluid flow between the pressure side of the vehicle brake device and the main cylinder of the vehicle brake device is switched within the hydraulic block. And the valve-hollow chamber is formed on the side of the pump piston axis, away from the reservoir-hollow chamber.

According to a preferred refinement or alternative solution of the foregoing solution, at least one pump piston-hollow chamber extending along the pump piston axis in the hydraulic block, at least one reservoir-hollow chamber extending at the side of the pump piston axis in the hydraulic block And hydraulic pressure of the hydraulic device of the vehicle brake device with a high pressure switch valve-hollow chamber for receiving a high pressure switch valve used to selectively connect fluid flow between the main cylinder of the vehicle brake device and the suction side of the pump piston of the hydraulic device. The block is in accordance with the invention characterized in that the high pressure diverting valve-hollow chamber is formed on the side of the pump piston axis in the hydraulic block away from the reservoir-hollow chamber.

According to the invention, preferably, the hydraulic block is provided with at least one inlet valve-hollow chamber containing an inlet valve for use in selectively connecting fluid flow between the pressure side of the pump piston of the hydraulic device and the wheel cylinder of the vehicle brake device. And the inlet valve-hollow chamber is formed between the switch valve-hollow chamber and the high pressure switch valve-hollow chamber when viewed transversely with respect to the pump piston axis in the hydraulic block.

Also in accordance with the present invention, preferably, the hydraulic block is provided with at least one motor contact-hollow chamber for receiving a motor contact used for electrically connecting a pump motor of the hydraulic device to a control unit of the hydraulic device, wherein the motor contact-hollow chamber is provided. It is formed between the switch valve-hollow chamber and the high pressure switch valve-hollow chamber when viewed transversely to the pump piston axis within the hydraulic block.

It is also an object of the invention to provide at least one pump piston-hollow chamber extending along the pump piston axis in the hydraulic block, at least one reservoir-hollow chamber extending at the side of the pump piston axis in the hydraulic block, and the hydraulic device. In a hydraulic block of a hydraulic device of a vehicle brake device having a motor connection-a hollow chamber for receiving a motor connection used for electrically connecting a pump motor of a hydraulic device to a control unit, the motor connection-hollow chamber is stored in the hydraulic block. It is achieved by a hydraulic block which is formed on the side of the pump piston axis, away from the hollow chamber.

The object is also preferably at least one pump piston-hollow chamber extending along the pump piston axis in the hydraulic block, at least one reservoir-hollow chamber extending on the side of the pump piston axis in the hydraulic block, and the hydraulic block. In the hydraulic block of the hydraulic system of the vehicle brake system with a leak reservoir-hollow chamber formed next to the reservoir-hollow chamber and viewed leakage from the pump piston-hollow chamber when viewed transversely to the pump piston axis. Is achieved by

The two solutions mentioned in the latter are suitable for the preferred refinement of the solution according to the invention described above.

Also according to the invention, the high pressure switch valve-hollow chamber is arranged in the inlet valve region, in which case the external inlet valve is in particular arranged in the same bore as the high pressure switch valve, so that two parts can be integrated in one bore. .

The advantages of all the solutions and refinements according to the invention are that the hydraulic blocks of the hydraulic device formed in accordance with the present invention are generally required because they require less space for the bore provided in the hydraulic block, in particular the channels and valves, than in all known hydraulic devices. It may be made smaller or include more functions or components.

In the following an embodiment of a hydraulic block of a hydraulic device according to the invention is described with reference to the accompanying schematic drawings.

1 shows a circuit diagram of a vehicle brake device 10, which is formed of a hydraulic vehicle brake device and provided for a vehicle, for example a passenger car. The vehicle brake device 10 has a main cylinder 12 as a main component, and a braking force enhancer and a brake pedal 16 are disposed in the main cylinder. The main cylinder 12 is operably coupled to the hydraulic block 18, by which two brake circuits 20, 22 are formed. Since the brake circuits 20 and 22 are formed in the same manner, only the brake circuit 20 will be described in detail below.

A brake circuit 20 with wheel brakes 24, 26 is connected to the hydraulic block 18, which wheel brakes each comprise a wheel cylinder 28 or 30. Further, in the hydraulic block 18, the brake circuit 20 includes a high pressure switching valve 32, a switching valve 34, an inflow valve 36, an inflow valve 38, a discharge valve 40, and a discharge valve ( 42). The pressure of the braking liquid in the brake circuit 20 is increased by the pump piston 44 assigned to the first brake circuit 20, and the braking liquid can be selectively pumped. In addition, the pump piston 44 is moved by an eccentric driver (not shown) and a motor 46.

In addition, a reservoir 48 and a check valve 50 are disposed in the brake circuit 20.

All of the above elements of the brake circuit 20 are fluidly connected to one another by lines 52, 54, 56, 58, 60. Line 52 provides a connection between main cylinder 12 and high pressure diverter valve 32 and diverter valve 34. Line 54 provides a connection between the high pressure diverting valve 32 and the pump piston 44 and the check valve 50. Line 56 provides a connection between the pump piston 44, the changeover valve 34, and the two inlet valves 36, 38. One line 58 provides a connection between the inlet valve 36, the corresponding outlet valve 40, and the corresponding wheel cylinder 28. The second line 58 provides a connection between the inlet valve 38, the corresponding outlet valve 42, and the corresponding wheel cylinder 30. Through line 60 a connection between two outlet valves 40, 42, reservoir 48, and check valve 50 is provided.

The vehicle brake device works in a conventional manner and in particular ensures anti-skid braking function (ABS), traction control function (TCS), and control of the turnover of the vehicle about its vertical axis (ESP).

2 and 3 show an implementation of the brake circuits 20, 22 formed as above in the hydraulic block 18 of the prior art. The above-mentioned parts, namely the main cylinder 12 and the wheel cylinders 28 and 30, are connected to the hydraulic block 18 via the main cylinder-connection 62 and the wheel cylinder-connection 64 or 66. In addition, the hydraulic block 18 has a high pressure switching valve-hollow chamber 68, a switching valve-hollow chamber 70, an inlet valve-hollow chamber 72, an inlet valve-hollow chamber 74, an outlet valve-hollow chamber. 76, and a discharge valve-hollow chamber 78 is disposed. In addition, a pump piston-hollow chamber 80 is provided, the pump piston hollow chamber extending along the pump piston axis 82, the suction side 84 of the pump piston 44 and the pressure of the pump piston 44. The side 86 is defined. In addition, an eccentric driver-hollow chamber 88, a reservoir-hollow chamber 90, and a check valve-hollow chamber 92 are provided. In order to achieve an effective vehicle brake device 10, the above-mentioned related elements 32 to 50 are assigned to one of the corresponding brake circuits 20 or 22, respectively, in the hollow chambers.

The connection by lines 52 to 60 is realized by line channels 94 to 102 in the hydraulic block 18 according to FIGS. 2 and 3, where line 52 is in line channel 94, line 54. ) Corresponds to line channel 96, line 56 to line channel 98, line 58 to line channel 100, and line 60 to line channel 102.

In addition, a leak reservoir-hollow chamber 104 and a motor connection-hollow chamber 106 are formed in the hydraulic block 18.

In the case of the known hydraulic block 18 according to FIGS. 2 and 3 in connection with the invention, a switching valve-hollow chamber 70 is provided on the side of the pump piston axis 82 towards the reservoir-hollow chamber 90. The high pressure diverting valve-hollow chamber is disposed at the height of the pump piston axis 82 and the inlet valve-hollow chambers 72, 74 are pumped as the top valve hollow chambers in connection with FIGS. 2 and 3. Disposed farthest from the piston axis 82, the motor connection-hollow chamber 106 is disposed between two reservoir-hollow chambers 90, and the leak reservoir-hollow chamber 104 is shown in FIGS. It can be seen in connection with FIG. 3 that it is disposed directly above the motor connection-hollow chamber 106 adjacent the eccentric driver-hollow chamber 88.

4 to 6, a hydraulic block 18 according to the invention is shown, by which the brake circuits 20, 22 shown in FIG. 1 are implemented. In addition, the hydraulic block 18 according to FIGS. 4 to 6 has elements 62 to 64. However, the elements are arranged differently, so that a compact structure of the hydraulic block 18 as a whole is possible.

In particular, in the hydraulic block according to FIGS. 4 to 6, a diverter valve-hollow chamber 70 is formed on the side of the pump piston axis 82, which is remote from the reservoir-hollow chamber 90, and is a high pressure diverter valve-hollow. The chamber 68 is formed on the side of the pump piston axis 82, away from the reservoir-hollow chamber 90, and the inlet valve-hollow chambers 72, 74 are transverse to the pump piston axis 82. In the direction, ie up or down in relation to FIGS. 4 to 6, the main changeover just above the pump piston axis 82 and the switch valve-hollow chamber 70 forming the top valve chamber. It can be seen that it is formed between the valve-hollow chamber 68.

In addition, in the hydraulic block 18 according to FIGS. 4 to 6, the motor connection-hollow chamber used to implement the motor connection via the hydraulic block 18 is switched when viewed transversely with respect to the pump piston axis 82. It is formed between the valve-hollow chamber 70 and the high pressure switching valve-hollow chamber 68.

In the hydraulic block 18 formed according to the invention, the leak reservoir-hollow chamber 104 is located next to the reservoir-hollow chamber 90 or two reservoirs when viewed transversely with respect to the pump piston axis 82. It can be seen that it is arranged between the hollow chambers 90.

1 is a circuit diagram of a hydraulic block with ESP as known and in accordance with the present invention;

Figure 2 is a perspective view showing the front of a known hydraulic block.

3 is a perspective view of the rear side of the hydraulic block according to FIG. 2;

4 is a front view of a hydraulic block according to the present invention.

5 is a rear view of the hydraulic block according to FIG. 4;

6 is a side view of the hydraulic block according to FIG. 4;

Explanation of symbols on the main parts of the drawings

10 vehicle brake device 70 switching valve-hollow chamber

12 main cylinder 80 pump piston hollow chamber

18: hydraulic block 82: pump piston axis

44: pump piston 90: reservoir-hollow chamber

Claims (7)

One or more pump piston-hollow chambers 80 extending along the pump piston axis 82 in the hydraulic block 18, one or more extending to the sides of the pump piston axis 82 in the hydraulic block 18. Switching valve used to selectively connect fluid flow between the reservoir-hollow chamber 90 and the pressure cylinder 86 of the main piston 12 of the vehicle brake device 10 and the pump piston 44 of the hydraulic system. In the hydraulic block 18 of the hydraulic device of the vehicle brake device 10, comprising a switching valve-hollow chamber 70 which receives 34. The switching valve-hollow chamber (70) is formed in the hydraulic block (18) on the side of the pump piston axis (82), away from the reservoir-hollow chamber (90). One or more pump piston-hollow chambers 80 extending along the pump piston axis 82 in the hydraulic block 18, one or more extending to the sides of the pump piston axis 82 in the hydraulic block 18. High pressure switching used to selectively connect fluid flow between the reservoir-hollow chamber 90 and the main cylinder 12 of the vehicle brake device 10 and the suction side 84 of the pump piston 44 of the hydraulic system. In the hydraulic block 18 of the hydraulic system of the vehicle brake device 10, which comprises a high pressure switching valve-hollow chamber 68 containing a valve 32, The high pressure switching valve-hollow chamber 68 is formed in the hydraulic block 18 on the side of the pump piston axis 82, away from the reservoir-hollow chamber 90. . 3. The hydraulic block (18) according to claim 1 or 2, wherein the hydraulic block (18) includes a pressure side (86) of the pump piston (44) of the hydraulic device and a wheel cylinder (28; 30) of the vehicle brake device (10). One or more inlet valve-hollow chambers 72; 74 for receiving inlet valves 36; 38 used to selectively connect fluid flow therebetween, wherein the inlet valve-hollow chambers 72; 74 Hydraulic block, characterized in that formed in the hydraulic block 18 between the switch valve-hollow chamber 70 and the high pressure switch valve-hollow chamber 68 when viewed transversely to the pump piston axis 82. . 3. The hydraulic block (18) according to claim 1 or 2, wherein the hydraulic block (18) receives at least one motor connection-hollow housing a motor connection used to electrically connect the pump motor (46) of the hydraulic device to a control unit of the hydraulic device. Chamber 106, wherein the motor connection-hollow chamber 106 is in contact with the switch valve-hollow chamber 70 when viewed transversely to the pump piston axis 82 in the hydraulic block 18. Hydraulic block, characterized in that formed between the high pressure switch valve-hollow chamber (68). One or more pump piston-hollow chambers 80 extending along the pump piston axis 82 in the hydraulic block 18, one or more extending to the sides of the pump piston axis 82 in the hydraulic block 18. A vehicle brake device comprising a reservoir-hollow chamber 90 and a motor contact-hollow chamber 106 for receiving a motor connection used to electrically connect the pump motor 46 of the hydraulic device to a control unit of the hydraulic device. In the hydraulic block 18 of the hydraulic device of (10), And the motor contact-hollow chamber (106) is formed on the side of the pump piston axis (82) in the hydraulic block (18), away from the reservoir-hollow chamber (90). One or more pump piston-hollow chambers 80 extending along the pump piston axis 82 in the hydraulic block 18, one or more extending to the sides of the pump piston axis 82 in the hydraulic block 18. Hydraulic block of the hydraulic system of the vehicle brake device 10, comprising a reservoir-hollow chamber 90, and a leak reservoir-hollow chamber 104 that receives a leak from the pump piston-hollow chamber 80. According to (18), The leak reservoir-hollow chamber 104 is formed in the hydraulic block 18 next to the reservoir-hollow chamber 90 when viewed transversely with respect to the pump piston axis 82. Hydraulic block. Hydraulic device comprising a hydraulic block (18) according to any one of claims 1, 2, 5 or 6.

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