Brake actuation device for motor vehicle brake system with adapter unit

Abstract

To provide a brake actuating device for a motor vehicle brake system, having an adapter unit.SOLUTION: There is provided a brake actuating device (1) for a motor vehicle brake system comprising a hydraulic unit (2), having a side face (10), on which an electric motor (3) is arranged. In the brake actuating device (1): the electric motor (3) drives a pressure generator, located in the hydraulic unit (2), for conveying a hydraulic fluid; the hydraulic unit (2) comprises a number of outlet openings (13) in the side face (10); an adapter unit (8) which comprises a number of inlet openings (14) is arranged on the side face (10); the outlet openings (13) of the hydraulic unit (2) are connected in fluid communication via respective connecting tubes (11) with the corresponding inlet openings (14) of the adapter unit (8).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a brake actuating device for a motor vehicle brake system as described in the preamble of claim 1.

Background Art

[0002] (Patent Document 1) discloses a brake actuating device for a motor vehicle brake system, including a block-type hydraulic unit on which an electric motor and an electronic unit are arranged. The electric motor drives a pressure generator placed within the hydraulic unit to receive pressure and convey hydraulic fluid in the direction of the wheel brakes of the motor vehicle brake system. To store the hydraulic fluid, a pressure medium reservoir is placed directly on the hydraulic unit. The hydraulic unit contains an electromagnetic switching valve that is switched using a corresponding solenoid within the electronic unit. The electronic unit functions to control the brake actuating device in open-loop and closed-loop manners. A number of channels are opened within the hydraulic unit to connect the individual components of the motor vehicle brake system to each other and to connect or disconnect them using the switching valve. Four such channels open an outside connection opening of the hydraulic unit that connects the brake line to the wheel brakes of the motor vehicle brake system. In the brake actuating device shown in FIG. 1, these connections are arranged above the electric motor. When this brake actuating device is fastened to the vehicle partition on the left side, the connections face the right side of the engine compartment. Under specific installation conditions, these connections may be difficult to access for connecting the wheel brake lines.

Prior Art Documents

Patent Documents

[0003] <着

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a brake actuation device for motor vehicle brake systems that simplifies the connection of brake lines. [Means for solving the problem]

[0005] The object on which the present invention is based is achieved by a modular electro-hydraulic brake actuation device having the function characterized by claim 1.

[0006] Modular electro-hydraulic brake actuation devices are used in slip-controlled motor vehicle brake systems.

[0007] Preferred embodiments of the present invention are found in the following description of exemplary embodiments with reference to the dependent claims and drawings. [Brief explanation of the drawing]

[0008] [Figure 1] An exemplary brake actuation device having an adapter unit is shown. [Figure 2] The adapter unit is shown in the first perspective view. [Modes for carrying out the invention]

[0009] Figure 1 shows an electro-hydraulic brake actuation device 1 for a motor vehicle brake system having a central hydraulic unit 2. An electric motor 3 is mounted on the side 10 of the hydraulic unit 2. The electric motor 3 drives a pressure generator located within the hydraulic unit 2, which delivers hydraulic fluid towards the wheel brakes of the motor vehicle brake system. The pressure generator can be designed as a two-stage piston pump or as a linear actuator. A pressure medium reservoir 5 is mounted on the hydraulic unit 2 to supply hydraulic fluid.

[0010] The electronic unit 4 is located on the hydraulic unit 2, opposite the electric motor 3. The electronic unit 4 is responsible for open-loop and closed-loop control of the brake actuation device 1. Within the hydraulic unit 2 is an electromagnetically operated switching valve driven by a solenoid of the electronic unit 4. The switching valve is used to control the fluid flow between the individual components of the motor vehicle brake system. Thus, numerous channels are opened within the hydraulic unit 2 to connect the individual components of the motor vehicle brake system to each other. Four of these channels open their respective outlet openings 13 on the side 10 of the hydraulic unit 2.

[0011] In one example, the adapter unit 8 is mounted on the side 10 of the hydraulic unit 2. In one example, the adapter unit 8 includes four connection openings 9 for brake lines that lead to the wheel brakes of the motor vehicle brake system. To connect these connection openings 9 to the hydraulic unit 2, the adapter unit 8 includes inlet openings not shown in Figure 1. The inlet openings of the adapter unit 8 are fluidly connected to the outlet openings 13 of the hydraulic unit 2 via exemplary connecting pipes 11. Each outlet opening 13 is thus connected to the corresponding inlet opening of the adapter unit 8. The connecting pipes 11 are connected to the respective outlet openings 13 and inlet openings on both sides using union nuts. The connecting pipes 11 are preferably made of copper or a copper alloy and preferably coated with aluminum polyamide. The connecting pipes 11 must have a rigid and curved design. In this case, the connecting pipes 11 are routed around the electric motor 3.

[0012] Using the adapter unit 8 as shown in the example, the connection opening 9 for the wheel brake line is relocated to a more accessible position within the engine compartment. This makes it easier to connect the brake line to the brake actuation device 1. The adapter unit 8 creates the possibility of a modular system, and therefore the conventional hydraulic unit 2 for the brake actuation device 1 can be used without requiring any special design. In applications where access to the connection opening for the wheel brake line is more difficult, additionally mounted adapter units 8 are used. This increases the flexibility of the installation of the brake actuation device 1 in motor vehicles.

[0013] A flange 7 is also provided for the hydraulic unit 2, which is used to attach the brake operating device 1 to a fastening point inside the motor vehicle. The piston rod 6 protruding from the flange 7 is connected to the inside of the vehicle and is operated by a pedal.

[0014] Figure 2 shows a hypothetical adapter unit 8. Figure 2 shows the rear inlet opening 14 into which the connecting pipe is screwed. The inlet opening 14 integrates into a channel 12, which then opens into a connecting opening 9 for the wheel brake. The channel 12 is opened inside the adapter unit 8, which is made of aluminum and can be closed with a plug as needed. In this way, fluid connections are created from each inlet opening 14 to the corresponding connecting opening 9. Three of the connecting openings 9 are located on one connecting surface 15, which is also oriented perpendicular to the side of the hydraulic unit. A fourth connecting opening 9 is located on another connecting surface of the adapter unit 8, which is oriented parallel to the side of the hydraulic unit. Furthermore, the adapter unit 8 includes a connecting flange 16 with two openings, which the flange screws into the hydraulic unit using the two openings. Furthermore, the present invention may also encompass the following embodiments: 1. A brake actuation device (1) for a motor vehicle brake system, comprising a hydraulic unit (2) having a side surface (10) on which an electric motor (3) is mounted, wherein the electric motor (3) drives a pressure generator located within the hydraulic unit (2) to carry hydraulic fluid, the hydraulic unit (2) includes a number of outlet openings (13) within the side surface (10), and an adapter unit (8) including a number of inlet openings (14) is mounted on the side surface (10), the outlet openings (13) of the hydraulic unit (2) are connected to the corresponding inlet openings (14) of the adapter unit (8) via their respective connecting pipes (11) in fluid communication. 2. The brake actuation device (1) according to 1. above, wherein the adapter unit (8) includes a connection surface (15) having a number of connection openings (9) for fluid connection of the wheel brakes of the motor vehicle brake system. 3. The brake operating device (1) described in 2. above, wherein the connecting surface (15) of the adapter unit (8) is oriented perpendicular to the side surface (10) of the hydraulic unit (2). 4. A brake actuation device (1) according to any one of 1. to 3. above, wherein in each case one of the inlet openings (14) is connected to one of the connection openings (9) in each case via a channel (12) created within the adapter unit (8). 5. The channel (12) is the brake operating device (1) described in 4. above, which is opened in the adapter unit (8). 6. The connecting pipe (11) is a brake operating device (1) according to any one of 1. to 5. above, made of at least copper. 7. The connecting pipe (11) is a brake operating device (1) according to any one of 1. to 6. above, having a rigid and curved design. 8. The connecting pipe (11) is a brake actuation device (1) according to any one of 1. to 7. above, with at least a portion of it being routed around the housing of the electric motor (3). 9. At the location where the brake operating device (1) is installed, the adapter unit (8) is positioned above the electric motor (3) on the hydraulic unit (2), and is the brake operating device (1) according to any one of 1. to 8. above. 10. The adapter unit (8) is connected to the hydraulic unit (2) by screw connection, and is a brake operating device (1) according to any one of 1. to 9. above.

Explanation of Symbols

[0015] 1 Brake operating device 2 Hydraulic unit 3 Electric motor 4 Electronic unit 5 Pressure medium reservoir 6 Piston rod 7 Clamping flange 8 Adapter unit 9 Connection opening for wheel brake line 10 Side surface 11 Connecting pipe 12 Channel 13 Outlet opening 14 Inlet opening 15 Connection surface 16 Connecting flange

Claims

1. A brake actuation device (1) for a motor vehicle brake system, comprising a hydraulic unit (2) having a side surface (10) on which an electric motor (3) is mounted, wherein the electric motor (3) drives a pressure generator located within the hydraulic unit (2) to carry hydraulic fluid, the hydraulic unit (2) includes a number of outlet openings (13) within the side surface (10), and an adapter unit (8) including a number of inlet openings (14) is mounted on the side surface (10), and the outlet openings (13) of the hydraulic unit (2) are connected to the corresponding inlet openings (14) of the adapter unit (8) via their respective connecting pipes (11) in fluid communication, the brake actuation device (1).

2. The brake actuation device (1) according to claim 1, wherein the adapter unit (8) includes a connection surface (15) having a plurality of connection openings (9) for fluid connection of the wheel brakes of the motor vehicle brake system.

3. The brake operating device (1) according to claim 2, wherein the connection surface (15) of the adapter unit (8) is oriented perpendicular to the side surface (10) of the hydraulic unit (2).

4. The brake actuation device (1) according to claim 2 or 3, wherein in each case one of the inlet openings (14) is connected to one of the connection openings (9) in each case via a channel (12) created within the adapter unit (8).

5. The brake operating device (1) according to claim 4, wherein the channel (12) is opened in the adapter unit (8).

6. The brake actuation device (1) according to any one of claims 1 to 3, wherein the connecting pipe (11) is made of at least copper.

7. The brake actuation device (1) according to any one of claims 1 to 3, wherein the connecting pipe (11) has a rigid and curved design.

8. The brake actuation device (1) according to any one of claims 1 to 3, wherein at least a portion of the connecting pipe (11) is guided around the housing of the electric motor (3).

9. The brake operating device (1) according to any one of claims 1 to 3, wherein the adapter unit (8) is positioned above the electric motor (3) on the hydraulic unit (2) at the location where the brake operating device (1) is installed.

10. The brake operating device (1) according to any one of claims 1 to 3, wherein the adapter unit (8) is connected to the hydraulic unit (2) using a screw connection.

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