Brake actuation device for motor vehicle brake system having adapter unit

Abstract

The invention relates to a brake actuation device (1) for a motor vehicle brake system, comprising a hydraulic unit (2) having a side (10) on which an electric motor (3) is arranged, the electric motor (3) driving a pressure generator located in the hydraulic unit (2) for conveying hydraulic fluid, the hydraulic unit (2) comprising a plurality of outlet openings (13) in the side (10), comprising a plurality of inlet openings (14) is arranged on the side face (10), and an outlet opening (13) of the hydraulic unit (2) is connected in fluid communication with a corresponding inlet opening (14) of the adapter unit (8) via a corresponding connecting pipe (11).

Description

Technical Field

[0001] The invention relates to a brake actuating device for a motor vehicle brake system according to the preamble of claim 1 . Background Art

[0002] DE 10 2018 214 565 A1 discloses a brake operating device for a motor vehicle brake system, which includes a block-type hydraulic unit on which an electric motor and an electronic unit are arranged. The electric motor drives a pressure generator located in the hydraulic unit in order to convey hydraulic fluid under pressure in the direction of the wheel brakes of the motor vehicle brake system. In order to store the hydraulic fluid, a pressure medium reservoir is arranged directly on the hydraulic unit. The hydraulic unit contains electromagnetic switching valves, which are switched by corresponding solenoids in the electronic unit. The electronic unit is used for open-loop and closed-loop control of the brake operating device. A plurality of channels are drilled in the hydraulic unit, which connect the various components of the motor vehicle brake system to each other and connect or disconnect them to each other via switching valves. Four such channels lead to connection openings on the outside of the hydraulic unit, which are provided for connecting the brake lines to the wheel brakes of the motor vehicle brake system. In Figure 1 In the brake operating device shown, these connections are arranged above the electric motor. When the brake operating device is fastened to the vehicle bulkhead on the left, the connections point to the right into the engine compartment. In certain installation conditions, these connections for connecting the wheel brake lines can be difficult to access. Summary of the invention

[0003] The object of the present invention is to provide a brake actuating device for a motor vehicle brake system in which the connection of the brake lines is simplified.

[0004] The object on which the invention is based is achieved by a modular electrohydraulic brake actuation device according to the characterizing portion of claim 1 .

[0005] Modular electrohydraulic brake actuation device for anti-skid controlled motor vehicle brake systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Preferred embodiments of the invention are to be found in the dependent claims and in the following description of exemplary embodiments with reference to the drawings.

[0007] In the attached picture:

[0008] Figure 1 An exemplary brake actuation device having an adapter unit is shown, and

[0009] Figure 2 The adapter unit is shown in a first perspective view. DETAILED DESCRIPTION

[0010] Figure 1 An electrohydraulic brake actuating device 1 for a motor vehicle brake system is shown, which has a central hydraulic unit 2. An electric motor 3 is attached to the side 10 of the hydraulic unit 2. The electric motor 3 drives a pressure generator arranged in the hydraulic unit 2, which delivers hydraulic fluid in the direction of the wheel brakes of the motor vehicle brake system. The pressure generator can be designed as a two-stage piston pump or a linear actuator. For the supply of hydraulic fluid, a pressure medium reservoir 5 is attached to the hydraulic unit 2.

[0011] The electronic unit 4 is arranged on the hydraulic unit 2, on the side opposite to the motor 3. The electronic unit 4 is used for open-loop and closed-loop control of the brake operating device 1. In the hydraulic unit 2 there are electromagnetically actuated switching valves, which are driven by the solenoids of the electronic unit 4. The switching valves are used to control the fluid flow between the various components of the motor vehicle brake system. Therefore, a plurality of channels are drilled in the hydraulic unit 2, which connect the various components of the motor vehicle brake system to each other. Four of these channels lead to corresponding outlet openings 13 on the side 10 of the hydraulic unit 2.

[0012] According to the example, the adapter unit 8 is attached to the side 10 of the hydraulic unit 2. According to the example, the adapter unit 8 comprises four connection openings 9 for brake lines, which lead to the wheel brakes of the motor vehicle brake system. In order to connect these connection openings 9 to the hydraulic unit 2, the adapter unit 8 comprises Figure 1 The inlet opening of the adapter unit 8 is fluidly connected to the outlet opening 13 of the hydraulic unit 2 via an exemplary connecting pipe 11. Therefore, each of the outlet openings 13 is connected to the corresponding inlet opening of the adapter unit 8. The connecting pipe 11 is connected to the corresponding outlet opening 13 and the inlet opening on both sides by a union nut. The connecting pipe 11 is preferably made of copper or a copper alloy and is preferably coated with an aluminum polyamide coating. The connecting pipe 11 has a substantially rigid and curved design. In this case, the connecting pipe 11 is guided around the motor 3.

[0013] By means of the adapter unit 8 according to this example, the connection opening 9 for the wheel brake line is relocated to a more accessible position in the engine compartment. This makes it easier to connect the brake line to the brake operating device 1. The adapter unit 8 creates the possibility of a modular principle and thus a conventional hydraulic unit 2 can be used for the brake operating device 1 and no special design is required. In applications where access to the connection opening for the wheel brake line becomes more difficult, an additionally attached adapter unit 8 is used. This increases the flexibility of the installation of the brake operating device 1 in the motor vehicle.

[0014] A flange 7 is also provided on the hydraulic unit 2 , via which the brake operating device 1 is attached to a fastening point in the motor vehicle, wherein a piston rod 6 protruding from the flange 7 leads to the interior of the vehicle for actuation via a pedal.

[0015] Figure 2 The adapter unit 8 is shown in a transparent interior view. The figure shows lower inlet openings 14, to which connecting pipes are screwed. The inlet openings 14 open into channels 12, which in turn lead to the connecting openings 9 of the wheel brakes. Channels 12 are drilled into the adapter unit 8 made of aluminum and are closed with plugs if necessary. In this way, a fluid connection is created from the respective inlet opening 14 to the corresponding connecting opening 9. Three of the connecting openings 9 are arranged on a connecting surface 15, which is also oriented at right angles to the side of the hydraulic unit. The fourth connecting opening 9 is arranged on another connecting surface of the adapter unit 8 parallel to the side of the hydraulic unit. In addition, the adapter unit 8 comprises a connecting flange 16 with two openings, which is screwed to the hydraulic unit via these two openings.

[0016] List of reference numerals:

[0017] 1 Brake control device

[0018] 2 Hydraulic unit

[0019] 3 Motor

[0020] 4 Electronics unit

[0021] 5 Pressure medium reservoir

[0022] 6 Piston rod

[0023] 7 Fastening flange

[0024] 8 Adapter unit

[0025] 9 Connection opening for wheel brake line

[0026] 10 Side

[0027] 11 Connecting pipe

[0028] 12 channels

[0029] 13 Exit opening

[0030] 14 Entrance opening

[0031] 15 Connecting Surfaces

[0032] 16 Connection flange

Claims

1. A brake operating device (1) for a motor vehicle brake system, comprising a hydraulic unit (2) having a side (10), on which an electric motor (3) is arranged, wherein: The motor (3) drives a pressure generator in the hydraulic unit (2) to deliver hydraulic fluid, wherein the hydraulic unit (2) comprises a plurality of outlet openings (13) in the side surface (10), wherein an adapter unit (8) comprising a plurality of inlet openings (14) is arranged on the side surface (10), It is characterized in that The outlet opening (13) of the hydraulic unit (2) is connected in fluid communication with a corresponding inlet opening (14) of the adapter unit (8) via a corresponding connecting pipe (11).

2. The brake operating device (1) according to claim 1, characterized in that The adapter unit (8) comprises a connection surface (15) having a plurality of connection openings (9) for fluidly connecting wheel brakes of a motor vehicle brake system.

3. The brake operating device (1) according to claim 2, characterized in that The connection surface (15) of the adapter unit (8) is oriented at an angle to the side surface (10) of the hydraulic unit (2).

4. The brake operating device (1) according to any one of claims 1 to 3, characterized in that A respective one of the inlet openings (14) is connected to a respective one of the connection openings (9) via a channel (12) formed in the adapter unit (8).

5. The brake operating device (1) according to claim 4, characterized in that The adapter unit (8) has the passages (12) drilled into it.

6. The brake operating device (1) according to any one of claims 1 to 5, characterized in that These connecting pipes (11) are made of at least copper.

7. The brake operating device (1) according to any one of claims 1 to 6, characterized in that These connecting pipes (11) have a rigid and curved design.

8. The brake operating device (1) according to any one of claims 1 to 7, characterized in that The connecting pipes (11) are guided at least partially around the housing of the electric motor (3).

9. The brake operating device (1) according to any one of claims 1 to 8, characterized in that In the installed position of the brake actuating device (1), the adapter unit (8) is arranged above the electric motor (3) on the hydraulic unit (2).

10. The brake operating device (1) according to any one of claims 1 to 9, characterized in that The adapter unit (8) is connected to the hydraulic unit (2) by means of a threaded connection.

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