Rectangular hydraulic block for hydraulic units of brake pressure control for hydraulic vehicle brake equipment

Abstract

The present invention relates to a space-saving drilling of a hydraulic block (25) for brake pressure control of a slip-controlled hydraulic non-human-powered vehicle brake system.

Description

[Technical Field]

[0001] The present invention relates to a hydraulic block for a hydraulic unit of a brake pressure control of a hydraulic vehicle brake system, as defined in the preamble of claim 1. The hydraulic block is intended in particular for vehicle brake systems with no manual and / or slip control. [Background technology]

[0002] Patent Document 1 discloses an elongated rectangular parallelepiped hydraulic block for a hydraulic unit of a slip-controlled, hydraulic, non-human-powered vehicle brake system. The hydraulic block has a master brake cylinder bore that runs from one narrow side to the opposite narrow side, and non-human-powered cylinder bores that run perpendicular to the master brake cylinder bore and run through the two opposite wide sides of the hydraulic block. Furthermore, this known hydraulic block has a blind hole that serves as a accommodating portion for a pedal stroke simulator. To generate non-human-powered brake pressure, a non-human-powered piston can slide in the non-human-powered cylinder bore via a ball screw driven by an electric motor. The electric motor is arranged coaxially with the non-human-powered cylinder bore outside the hydraulic block, and a ball screw—also coaxial with the electric motor and the non-human-powered cylinder bore—is located between the electric motor and the non-human-powered piston. The electric motor and ball screw form a non-human-powered drive device, and together with the non-human-powered piston and non-human-powered cylinder bore form a non-human-powered brake pressure generator for a hydraulic vehicle braking system. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] German Patent Application Publication No. 102016202113 Summary of the Invention

[0004] The hydraulic block of the present invention, which has the features of claim 1, is intended for a hydraulic unit for brake pressure control of a hydraulic vehicle brake system. In particular, the hydraulic block of the present invention is intended for a vehicle brake system with slip control and / or for a non-human-powered vehicle brake system. Brake pressure control refers to the generation and control of brake pressure in the vehicle brake system, in the brake circuit of the vehicle brake system, and / or in the hydraulic wheel brakes of the vehicle brake system connected to the hydraulic block, and can in particular also include slip control. Slip control is, for example, anti-lock control, traction control, and / or vehicle dynamics control, for which the abbreviations ABS, ASR, and / or FDR are commonly used. Slip control is well known and will not be described in detail here.

[0005] The hydraulic block serves as the mechanical mounting and hydraulic piping for the hydraulic components of the vehicle brake system, brake pressure generation and / or brake pressure control and / or slip control. Such hydraulic components are, in particular, solenoid valves, check valves, hydraulic reservoirs, damper chambers, and pressure sensors. The hydraulic components are mounted in housings in the hydraulic block, which are often configured as cylindrical recesses, blind holes, or through-holes with a partial diameter step. "Plumbed" means that the housings or the hydraulic components mounted therein are connected through pipes in the hydraulic block in accordance with the hydraulic piping diagram of the vehicle brake system. However, the pipes are typically not necessarily drilled into the hydraulic block.

[0006] The hydraulic block forms a hydraulic unit in which the hydraulic components of the vehicle brake system or its slip control are mounted, where "mounted" means that the hydraulic components are attached to the respective receiving parts of the hydraulic block intended for them.

[0007] Furthermore, the hydraulic block has connections for brake pipes, in particular those leading to the hydraulic wheel brakes of the vehicle brake system. The hydraulic block can also have connections for brake pipes coming from a master brake cylinder, but it is preferred that the master brake cylinder is integrated into the hydraulic block, i.e. the hydraulic block has, for example, a master brake cylinder bore.

[0008] The invention is particularly aimed at the arrangement of hydraulic components or their housings in the hydraulic block and their hydraulic connections.

[0009] For space-saving storage of the inlet and / or outlet valves of the slip control, one embodiment of the invention provides for arranging their receptacles in the hydraulic block not next to each other in a straight line as is customary, but additionally with a lateral offset relative to their arrangement. For example, the receptacles for the inlet valves are arranged in the hydraulic block not in one but in two mutually parallel straight lines, alternating with each other. And / or for example, one receptacle for the outlet valves is arranged in the hydraulic block laterally offset relative to the other receptacles for the outlet valves, which are arranged in a straight line.

[0010] The hydraulic block according to the invention preferably has a master brake cylinder bore for axially slidably receiving one or more master brake cylinder pistons for muscle actuation of the vehicle brake system, a non-human cylinder bore for non-human brake pressure generation, and / or a simulator cylinder bore or a receiving section for a pedal stroke simulator.

[0011] A brake fluid reservoir is placed on a surface of the hydraulic block, preferably the narrow surface of the hydraulic block, referred to herein as the upper surface. For this purpose, the hydraulic block has one or more connections for the brake fluid reservoir on its upper surface. To attach the brake fluid reservoir to the upper surface of the hydraulic block, one embodiment of the present invention provides for a recess in the surface of the hydraulic block adjacent to the upper surface, extending all the way to the upper surface. For example, a mounting lug extending from the underside of the brake fluid reservoir can be inserted into this recess, and the mounting lug can be fastened to the recess with, for example, a screw, without the screw head or other parts of the mounting lug protruding from the surface of the adjacent surface of the hydraulic block. This allows for unhindered insertion of an electrical plug provided on the adjacent surface for contact with the brake pressure control device.

[0012] For connection to the non-manual cylinder bores, one embodiment of the present invention provides for a pipe in the hydraulic block that runs from one of the connections for the brake fluid reservoir on the top surface to the non-manual cylinder bores. This pipe runs axially or parallel to the axis from the connection for the brake fluid reservoir to the non-manual cylinder bores, then bends and runs parallel to the outside of the non-manual cylinder bores, before bending again to connect to the non-manual cylinder bores. In this way, the non-manual cylinder bores can be connected to the brake fluid reservoir with only a few bends. A check valve that allows flow through in the direction of the non-manual cylinder bores can be provided in the pipe, particularly in the connection, immediately after the connection for the brake fluid reservoir.

[0013] The dependent claims are directed to developments and preferred embodiments of the invention stated in the independent claims.

[0014] Through holes or blind holes, referred to herein as "pipes" or "bores" or "cylinder bores", may be made other than by drilling.

[0015] All features disclosed in the description and in the drawings may be embodied in the embodiments of the invention either individually or in essentially any combination. In principle, embodiments of the invention are also possible that have only one or more features of a claim or an embodiment of the invention, rather than all features of the claim or embodiment. In particular, embodiments of the invention are also possible in which the receptacles for the intake valves and / or the receptacles for the discharge valves are arranged differently from those described in the independent claims.

[0016] The invention will now be described in more detail with reference to embodiments illustrated in the drawings, which show: [Brief explanation of the drawings]

[0017] [Figure 1] This is a hydraulic piping diagram for non-human-powered vehicle brake equipment with slip control. [Figure 2] 1 is a perspective view of a hydraulic block according to the invention, looking towards the valve face of the hydraulic block; FIG. [Figure 3] 3 is a view of the hydraulic block of FIG. 2 looking toward the opposing motor face of the hydraulic block. FIG. [Figure 4] FIG. 4 is a perspective view of the hydraulic unit having the hydraulic block of FIGS. 2 and 3, looking towards the motor face. DETAILED DESCRIPTION OF THE INVENTION

[0018] FIG. 1 shows a hydraulic multi-circuit vehicle brake system 1, i.e., a dual-circuit, non-human-operated vehicle brake system 1 having two brake circuits I and II and four hydraulic wheel brakes 2, two of which are connected to each of the brake circuits I and II. The vehicle brake system 1 has a dual-circuit master brake cylinder 4 that can be operated by muscle force using a foot brake pedal 3, and a non-human-operated brake pressure generator 5. Both brake circuits I and II are hydraulically connected in parallel to the master brake cylinder 4 and the non-human-operated brake pressure generator 5, and each of the brake circuits I and II is connected to the master brake cylinder 4 by one isolation valve 6 and to the non-human-operated brake pressure generator 5 by one non-human-operated valve 7.

[0019] A piston-cylinder unit 9 having a spring-loaded piston 10 is connected by a simulator valve 8 to one of the two brake circuits I, i.e. to the chamber of the two-circuit master brake cylinder 4, as a pedal stroke simulator 11.

[0020] The master brake cylinder 4 has a pressureless brake fluid reservoir 12 to which both chambers or brake circuits I, II of the master brake cylinder 4 are connected. One of the two chambers of the master brake cylinder 4 is connected by a test valve 13 and hydraulically parallel to it by a check valve through which flow can pass in the direction of the master brake cylinder 4, while the other chamber of the master brake cylinder 4 is connected directly to the brake fluid reservoir 12.

[0021] The non-human-operated brake pressure generator 5 has a piston-cylinder unit 14, the piston 15 of which is slidable in a cylinder 18 of the piston-cylinder unit 14 by an electric motor 16 via a screw transmission 17 for non-human-operated generation of brake pressure. Both brake circuits I, II of the vehicle brake equipment 1 are connected to the cylinder 18 of the non-human-operated brake pressure generator 5 by both non-human-operated valves 7.

[0022] The cylinder 18 of the piston-cylinder unit 14 of the non-human brake pressure generator 5 is connected to the brake fluid storage container 12 by a check valve 19 which allows flow through in the direction of the cylinder 18, and is also directly connected to the brake fluid storage container 12 by a pipe 20 without an intervening valve. The piston 10 of the non-human brake pressure generator 5 passes through the communicating part of this pipe 20 when it starts to slide, whereby the piston-cylinder unit 14 of the non-human brake pressure generator 5 is hydraulically isolated from the brake fluid storage container 12 when the non-human brake pressure generator 5 is operated.

[0023] Each wheel brake 2 is connected to one of the two brake circuits I, II by an inlet valve 21 and to the pressureless brake fluid reservoir 12 by a discharge valve 22 .

[0024] The non-powered brake pressure generator 5, the intake valve 21, and the discharge valve 22 form a brake pressure control valve structure, which can perform slip control at individual wheels, such as anti-lock control, traction control, vehicle dynamic control, etc. These slip controls are usually abbreviated as ABS, ASR, and FDR. Such slip controls are well known and will not be described in further detail here.

[0025] In the illustrated and described embodiment of the present invention, the isolation valve 6, the non-powered valve 7, the simulator valve 8, the test valve 13, the intake valve 21, and the discharge valve 22 form a 2 / 2-way solenoid valve, with the isolation valve 6, the test valve 13, and the intake valve 21 open when in their unenergized basic positions, and the non-powered valve 7, the simulator valve 8, and the discharge valve 22 closed when in their unenergized basic positions.

[0026] Pressure sensors 23, 24 are connected to one of the two chambers of the master brake cylinder 4 and to the cylinder 18 of the non-powered brake pressure generator 5. A stroke or position sensor 45 is arranged on the pedal rod connecting the foot brake pedal 3 with the master brake cylinder piston 53 to measure the piston stroke or pedal stroke or piston position or pedal position of the master brake cylinder piston 53 or foot brake pedal 3.

[0027] Service braking is performed as non-human braking by the non-human brake pressure generator 5. For this purpose, the non-human valve 6 is opened, and brake pressure is generated by the non-human brake pressure generator 5, and this brake pressure acts on the wheel brakes 2 by the open intake valve 21, and thus the wheel brakes are operated.

[0028] During service braking, the master brake cylinder 4 is hydraulically isolated from the brake circuits I and II by closing the isolation valve 6. The master brake cylinder serves as a setpoint generator for the brake pressure to be generated by the non-powered brake pressure generator 5. During service braking, the simulator valve 8 opens, allowing the master brake cylinder 4 to displace brake fluid to the pedal stroke simulator 11, allowing a piston stroke and a pedal stroke in the master brake cylinder 4.

[0029] In the event of a fault or failure of the non-human-operated brake pressure generator 5, auxiliary braking is possible by muscle operation of the master brake cylinder 4, the isolation valve 6 opens, and the non-human-operated valve 7 remains closed.

[0030] The hydraulic components of the vehicle brake equipment 1 are disposed within and on the surface of the hydraulic block 25, shown in Figures 2 and 3. The hydraulic block 25 is shown transparent to reveal its perforations. Figure 2 shows the valve face 26, and Figure 3 shows the opposing motor face 27 of the hydraulic block 25. The hydraulic block 25 is a flat, rectangular metal block in this embodiment that serves as the mechanical mounting and hydraulic piping for the hydraulic components of the vehicle brake equipment 1. With the hydraulic components mounted, the hydraulic block 25 forms the hydraulic unit 32 of the vehicle brake equipment 1, shown in Figure 4 in a perspective view looking toward the motor face 27. By "flat," we mean that the hydraulic block 25 is approximately three to four times as wide or long as it is thick. The two opposing wide faces of the hydraulic block 25, which are approximately square in this embodiment, form the valve face 26 and the motor face 27.

[0031] The hydraulic block 25 is provided with a master brake cylinder bore 4' forming the master brake cylinder 4, a non-human cylinder bore forming the cylinder 18 of the non-human brake pressure generator 5, a cylinder bore 28 forming the cylinder of the piston-cylinder unit 9 of the pedal stroke simulator 11, receptacles for the solenoid valves 6, 7, 8, 13, 21, 22, a receptacle for the check valve 19, a receptacle for the pressure sensors 23, 24, a connection 29 for the brake fluid reservoir 12 to the hydraulic block 25 by means of brake pipes and a connection 30 for the hydraulic wheel brakes 2. The receptacles for the solenoid valves, the check valves and the pressure sensors are designated in Figures 2 and 3 by the same reference numerals as the respective hydraulic components in Figure 1, but with the addition of the symbol "'".

[0032] These receiving areas are cylindrical recesses or blind holes in the hydraulic block 25, partially stepped in diameter. The hydraulic components are inserted into the receiving areas and crimped tightly around the circumference. The hydraulic section of the solenoid valve, which forms the actual valve, is located inside the receiving area; the armature and magnetic coil, housed in a valve dome, stand upright from the valve face 26 of the hydraulic block 1. The connection 29 for the brake fluid reservoir 12 is also a blind hole, into which a connecting nipple standing upright from the bottom of the brake fluid reservoir 12 is inserted and sealed with a sealing ring. The connection bore 30 for the wheel brake 2 is also a blind hole, into which the brake pipe leading to the wheel brake 2 is attached with a press-fit nipple (not shown) using the so-called self-clinching technique. A brake pipe connection using a threaded nipple, for example, is also possible. Pipes fabricated as bores in the hydraulic block 1 connect the cylinder bores, the receptacles for the hydraulic components and the connections 29, 30 for the brake fluid reservoir 12 and the wheel brakes 2 to one another in accordance with the hydraulic piping diagram of FIG.

[0033] "Drilled" or "drilled" means the bores that form the cylinder bores, receptacles for solenoid valves, and connecting bores in the hydraulic block 1, as well as the pipes that connect these in accordance with the hydraulic piping diagram. The hydraulic block 25 is drilled in Cartesian coordinates, i.e. the bores, receptacles, connections, pipes, etc. are arranged in the hydraulic block 25 parallel and perpendicular to each other and to the faces and sides of the hydraulic block 25. This does not exclude some pipes or bores that run diagonally. "Mounted" means that the hydraulic components are placed in the receptacles.

[0034] The brake fluid reservoir 12 is placed on the upper surface 31 of the hydraulic block 25 adjacent to the valve surface 26 and the motor surface 27, so that connecting nipples on the bottom of the reservoir 12 are inserted into the connecting portions 29 on the upper surface 31 of the hydraulic block 25. The reservoir 12 has three chambers, two of which are connected to both chambers of the master brake cylinder 4, and one of which is connected to the cylinder 18 of the piston-cylinder unit 14 of the non-powered brake pressure generator 5 by a check valve 19 and a pipe 20. The connecting portions 29 are arranged one behind the other in the longitudinal direction of the upper surface 31 of the hydraulic block 25 in an approximately V-shape, i.e., the middle of the three connecting portions 29 is arranged laterally offset from the upper surface 31 of the hydraulic block 25 with respect to the other two connecting portions 29.

[0035] The brake fluid reservoir 12 has two eyelet lugs 33 that are attached to the top surface 31 of the hydraulic block 25 by shoulder screws 34, and an eyelet lug 35 that extends from the bottom surface and is attached to the hydraulic block 25 by a stud 36 (FIG. 4). The stud 36 allows for length compensation when the hydraulic block 25 thermally expands. The eyelet lugs 35 reside in recesses 37 in a surface 38 that extends to the top surface 31 of the hydraulic block 25, adjacent to the top surface 31, the valve face 26, and the motor face 27. The screw head of the stud 36 is also recessed in the recess 37 so that it does not protrude from the surface 38.

[0036] A control device cover 39 is disposed on the valve face 26 of the hydraulic block 25, and includes an electronic control device for brake pressure control, with a multi-pole electrical coupler 40 on face 38 of the hydraulic block 25. The eyelet lug 35 of the brake fluid reservoir 12, including the stud 36, is recessed into the recess 37 so that the eyelet lug 35 and the stud 36 do not interfere with the insertion and removal of a plug (not shown) into the coupler 40.

[0037] The master brake cylinder bore 4' forming the master brake cylinder 4 is provided in the hydraulic block 25 above the center of the hydraulic block 25, spaced apart from the upper surface 31 and parallel to the upper surface 31, the valve surface 26 and the motor surface 27.

[0038] The cylinder 18 of the piston-cylinder unit 14 of the non-human brake pressure generator 5 is mounted on the motor face 27 of the hydraulic block 25, perpendicular to the valve face 26 and the motor face 27. A raised portion 41 extends from the hydraulic block 25 from the valve face 26, into which the cylinder 18 of the non-human brake pressure generator 5 extends. The cylinder 18 of the piston-cylinder unit 14 of the non-human brake pressure generator 5 is mounted on the hydraulic block 25, perpendicular to the master brake cylinder bore 4', directly aligned with the master brake cylinder bore 4'. "Directly aligned" means that there is no hollow space in the hydraulic block 25 between the cylinder 18 of the piston-cylinder unit 14 of the non-human brake pressure generator 5 and the master brake cylinder bore 4'.

[0039] As mentioned above, the cylinder 18 of the piston-cylinder unit 14 of the non-operable brake pressure generator 5 is connected to the central connection 29 of the brake fluid reservoir 12 by the check valve 19. For this purpose, a pipe 20 runs coaxially from the bottom of the connection 29 to the vicinity of the circumference of the cylinder 18, where it bends at a right angle and runs parallel to the axis of the cylinder 18 within the raised portion 41 along the outside of the cylinder 18, communicating with a notch 51 in the cylinder 18. The notch 51 is a kind of circumferential groove in the cylinder 18 of the non-operable brake pressure generator 5, extending only over a portion of the circumference of the cylinder 18. This groove may also be made to circumferentially extend completely. In general, the notch 51 can also be understood as a bent portion through which the pipe 20 communicates with the cylinder 18. The check valve 19 is arranged at the bottom of the connection 29 in an enlarged portion of the pipe 20 that forms a receiving portion 19' for the check valve 19.

[0040] The cylinder bore 28 of the pedal stroke simulator 11 is directly aligned with the cylinder 18 of the un-operated brake pressure generator 5, and is perpendicular to the valve face 26 of the hydraulic block 25, between the cylinder 18 of the piston-cylinder unit 14 of the un-operated brake pressure generator 5 and a corner of the hydraulic block 25. "Directly aligned" means that there is no hollow space in the hydraulic block 25 between the cylinder bore 28 of the pedal stroke simulator 11 and the cylinder 18 of the un-operated brake pressure generator 5.

[0041] Parallel to and adjacent to the master brake cylinder bore 4', the hydraulic block 25 has a significantly narrower bore serving as a position sensor bore 43 for a master brake cylinder piston (primary piston or rod piston) 53. The position sensor bore 43 opens in the same plane as the master brake cylinder bore 4', in this embodiment at a mounting surface 46 of the hydraulic block 25. A rod-shaped sensor holder (not shown) is inserted into the position sensor bore 43 and attached to a piston rod 42 connected to the master brake cylinder piston 53 on the outside of the hydraulic block 25, so that the sensor holder moves together with the master brake cylinder piston 53. A permanent magnet is attached to the sensor holder, for example, as a signal generator in the position sensor bore 43.

[0042] A blind hole is provided in the hydraulic block 25 perpendicular to the position sensor bore 43 as a receiving portion 44 for a stroke or position sensor 45. The receiving portion 44 is located upward, i.e., on the side of the position sensor bore 43 facing the upper surface 31 of the hydraulic block 25, near the connection of the position sensor bore 43, near the opening of the master brake cylinder bore 4′, or near the mounting surface 46 of the hydraulic block 25.

[0043] The master brake cylinder 4 and the position detector bore 43 open at a mounting surface 46 of the hydraulic block 25, which faces the valve surface 26, the motor surface 27, and the surface 38 having the recess 37 adjacent to the top surface 31. The mounting surface 46 allows the hydraulic block 25 to be mounted to the splash board of an automobile (not shown) with the top surface 31 and the brake fluid reservoir 12 facing upward.

[0044] The electric motor 16 is arranged coaxially with the cylinder 18 of the piston-cylinder unit 14 of the unoperated brake pressure generator 5 on the outside of the motor face 27 of the hydraulic block 25. A planetary gear (not shown) as a reduction gear and a ball screw for converting the rotational drive of the electric motor 16 into translational motion to slide the piston 15 of the piston-cylinder unit 14 of the unoperated brake pressure generator 5 are arranged coaxially with the electric motor 16 and the cylinder 18 in the motor housing of the electric motor 16 and in the cylinder 18 of the unoperated brake pressure generator 5.

[0045] Between the cylinder 18 of the piston-cylinder unit 14 of the non-human brake pressure generator 5 and a lower surface 47 of the hydraulic block 25 facing the upper surface 31, three through holes continuing from the valve surface 26 to the motor surface 27 are provided in the hydraulic block 25 as motor connection bores 48 for supplying power to the electric motor 16 of the non-human brake pressure generator 5. The motor connection bores 48 are provided in the hydraulic block 25 on an imaginary arc centered on the cylinder 18, between the cylinder 18 and the lower surface 47.

[0046] The hydraulic block 25 further has a signal bore 49 for control or signal lines to or from the electric motor 16. Through the signal bore 49, for example, a rotation angle sensor 50 of the electric motor 16 can be connected to an electronic control device arranged in the control device cover 39 on the valve side 26 of the hydraulic block 25. The signal bore 49 continues from the valve face 26 to the motor face 27 and is located between the mounting face 46 and the underside 47 of the hydraulic block 25, between the cylinder 18 of the non-powered brake pressure generator 5 and a corner of the hydraulic block 25.

[0047] The receptacles for the solenoid valves are arranged in the valve face 26 of the hydraulic block 25. The receptacles 21' for the intake valves 21 are arranged in the valve face 26 side by side between the bottom surface of the connection 29 for the brake fluid reservoir 12 and the master brake cylinder bore 4', and are offset alternately by slightly less than a diameter in the direction of the top surface 31 and the master brake cylinder 4.

[0048] Three of the accommodations 22' for the discharge valves 22 are provided in the valve face 26 of the hydraulic block 25, side by side at the height of the master brake cylinder bore 4' on an imaginary straight line parallel to the top surface 31. These three accommodations 22' for the discharge valves 22 are arranged in the axial plane of the master brake cylinder bore 4' or in a plane that intersects with and is parallel to the axial plane of the master brake cylinder bore 4'. The first or last accommodation 22' for the discharge valves 22 is provided in the valve face 26 of the hydraulic block 25, offset toward the top surface 31 of the hydraulic block 25. The accommodation 22' closest to the mounting surface 46 is offset with respect to the other three accommodations 22' for the discharge valves 22. The receiving portions 21' for the intake valves 21 and the receiving portions 22' for the discharge valves 22 for each wheel brake 2 are offset from each other in pairs, i.e., perpendicular to the upper surface 31 or parallel to the mounting surface 46 of the hydraulic block 25.

[0049] The master brake cylinder bore 4' has two circumferential seal grooves 54 for each master brake cylinder piston 53, in which piston seals (seal rings) 55 are arranged. The seal grooves 54 have only a small axial spacing from one another, which is approximately the same as the width of the seal grooves 54. Three receiving sections 22' for the discharge valves 22, located at the level of the master brake cylinder bore 4', communicate directly with the master brake cylinder bore 4' by pipes that run coaxially through the bottom surfaces of the receiving sections 22' in a radial or secant direction into the master brake cylinder bore 4'. Here, one of the receiving sections 22' for one of the discharge valves 22 is connected to the master brake cylinder bore 4' between two of the seal grooves 54.

[0050] A receiving portion 13' for the test valve 13 is provided on the valve face 26 of the hydraulic block 25 between a receiving portion 22' for the discharge valve 22, which is offset relative to the other, and the mounting face 46 of the hydraulic block 25.

[0051] In the center between the respective receiving sections 22' for the discharge valves 22, a shallow recess is provided in the valve face 26 of the hydraulic block 25 as a receiving section 24' for the pressure sensor 24 for the cylinder 18 of the non-human brake pressure generator 5, this recess communicating by means of a coaxial bore in its bottom with the pipe 20 leading from the central connection 29 for the brake fluid reservoir 12 to the cylinder 18 of the non-human brake pressure generator 5.

[0052] A receiving portion 23' for the pressure sensor 23 of the master brake cylinder 4 is provided in the valve face 26 of the hydraulic block 25, slightly below the master brake cylinder bore 4' and near its closed end. The receiving portion 23' for the pressure sensor 23 communicates directly with the master brake cylinder bore 4' by means of a pipe which passes coaxially through the bottom surface of the receiving portion 23' and leads in the secant direction into the master brake cylinder bore 4'.

[0053] A receiving portion 6' for one of the isolation valves 6 is provided in the valve face 26 of the hydraulic block 25, between the receiving portion 23' for the pressure sensor 23 of the master brake cylinder 4 and the cylinder 18 of the non-human brake pressure generator 5. A receiving portion 6' for the other non-human valve 6 is provided in the valve face 26 of the hydraulic block 25, opposite the cylinder 18 of the non-human brake pressure generator 5, between the cylinder 18 and the mounting face 46 of the hydraulic block 25.

[0054] Receptacles 7' for the non-human-operated valves 7 are provided in the valve face 26 of the hydraulic block 25, opposite the cylinder 18 of the non-human-operated brake pressure generator 5. One of the two receptacles 7' is located between the receptacles 23' for the pressure sensor 23 of the master brake cylinder 4, and the other receptacle 7' is located opposite the cylinder 18, between it and the mounting face 46 of the hydraulic block 25. Both receptacles 7' for the non-human-operated valves 7 communicate with the cylinder 18 of the non-human-operated brake pressure generator 5 by means of pipes 52 which extend through the hydraulic block 25 parallel to the top face 31 and perpendicular to the mounting face 46 of the hydraulic block 25.

[0055] The receiving portion 8' for the simulator valve 8 is located between the receiving portion 23' for the pressure sensor 23 of the master brake cylinder 4 and the cylinder bore 28 of the pedal stroke simulator 11, offset relative to the cylinder bore 28 in the direction of the face 38 of the hydraulic block 25 having the recess 37. [Explanation of symbols]

[0056] 4' Master brake cylinder bore 5. Non-human brake pressure generator 7 Non-human powered valve 7' Receptacle for non-powered valve 9 Piston-cylinder unit 12 Brake fluid reservoir 18 cylinders 20 Pipe 21 Intake valve 21' Receptacle for intake valve 22 Discharge valve 22' Receptacle for discharge valve 24 Pressure Sensor 24' Receptacle for pressure sensor 25 Hydraulic Block 26 Valve surface 29 Connection for brake fluid reservoir 31 Top surface 37 Recess 38 Surface adjacent to valve surface 43 Position detector bore 44 Receptacle for stroke or position sensor 45 Travel or position sensor 46 Mounting surface 51 Cutting 52 Pipe 53 Master brake cylinder piston 54 Seal groove 55 Piston seal material

Claims

1. A rectangular parallelepiped hydraulic block (25) for a hydraulic unit of a brake pressure control of a hydraulic vehicle brake system, the hydraulic block (25) having a valve surface (26) adjacent to an upper surface (31) of the hydraulic block (25) in which receptacles (6', 7', 8', 13', 21', 22') for the solenoid valves (6, 7, 8, 13, 21, 22) of the brake pressure control are arranged, the receptacles (21') for the inlet valves (21) and / or the receptacles (22') for the outlet valves (22) of the brake pressure control are arranged on the valve surface (26) of the hydraulic block (25) offset in the longitudinal direction of the upper surface (31) of the hydraulic block (25) and laterally with respect to the upper surface (31) of the hydraulic block (25); 1. A hydraulic block according to claim 1, wherein the hydraulic block (25) has a master brake cylinder bore (4') provided with two circumferential seal grooves (54) for a piston seal (55) for a master brake cylinder piston (53), and the accommodation portion (22') for the discharge valve (22) is in direct communication with the master brake cylinder bore (4') by a pipe which passes coaxially through the bottom surface of the accommodation portion (22') and leads into the master brake cylinder bore (4') between both seal grooves (54) in a radial or secant direction.

2. 2. The hydraulic block according to claim 1, wherein the receiving portions (21') for the intake valves (21) arranged next to each other in the longitudinal direction of the upper surface (31) of the hydraulic block (25) are arranged on the valve face (26) of the hydraulic block (25) so as to be alternately offset laterally with respect to the upper surface (31) of the hydraulic block (25), and / or one receiving portion (22') for the discharge valve (22) is arranged on the valve face (26) of the hydraulic block (25) so as to be offset laterally with respect to the upper surface (31) of the hydraulic block (25) relative to the other receiving portion (22') for the discharge valve (22).

3. 3. The hydraulic block according to claim 1, wherein the receiving portions (21') for the intake valves (21) and the receiving portions (22') for the discharge valves (22) are arranged in pairs, each pair being perpendicular to the upper surface (31) and / or being arranged on the valve surface (26) of the hydraulic block (25) offset from one another parallel to the mounting surface (46) of the hydraulic block (25).

4. 4. The hydraulic block according to claim 1, wherein the hydraulic block has a master brake cylinder bore, and the accommodation portion for the discharge valve is arranged in the axial plane of the master brake cylinder bore or in a plane that intersects with the master brake cylinder bore and is parallel to the axial plane of the master brake cylinder bore.

5. 4. The hydraulic block according to claim 3, characterized in that the hydraulic block (25) has a receiving portion (7') for a non-human-operated valve (7) on the valve face (26) perpendicular to the upper face (31) and / or parallel to the mounting face (46) of the hydraulic block (25), offset relative to the receiving portion (21') for the intake valve (21) and / or the receiving portion (22') for the discharge valve (22).

6. 6. The hydraulic block according to claim 3 or 5, characterized in that the hydraulic block (25) has two accommodations (7') for two non-human-operated valves (7) on the valve face (26) side by side on both sides of the cylinder (18) of the non-human-operated brake pressure generator (5), and these accommodations are connected to the cylinder (18) by pipes (52) extending to the hydraulic block (25) perpendicular to the mounting face (46) and / or parallel to the top face (31) of the hydraulic block (25).

7. 7. The hydraulic block according to claim 1, wherein the hydraulic block (25) has a receiving portion (24') for a pressure sensor (24) for a non-powered brake pressure generator (5) on the valve face (26) facing away from the top face (31) of the hydraulic block (25), on the side of the receiving portion (21') for the intake valve (21) and / or between the respective receiving portions (22') for the discharge valves (22).

8. 8. The hydraulic block according to claim 1, wherein the hydraulic block has a cylinder for a non-human brake pressure generator perpendicular to the valve surface and a connection on the top surface for a brake fluid reservoir, the connection having a pipe extending from the cylinder toward the cylinder of the non-human brake pressure generator, the pipe transitioning to a pipe parallel to the cylinder of the non-human brake pressure generator, and the pipe bending to communicate with the cylinder of the non-human brake pressure generator.

9. 9. The hydraulic block according to claim 1, wherein the hydraulic block has a cylinder for a non-human brake pressure generator perpendicular to the valve face and a connection on the top face for a brake fluid reservoir, the connection having a pipe extending from the cylinder toward the cylinder of the non-human brake pressure generator, the pipe transitioning into a pipe parallel to the cylinder and communicating with the cylinder by a notch.

10. A rectangular parallelepiped hydraulic block (25) for a hydraulic unit of a brake pressure control of a hydraulic vehicle brake system, the hydraulic block (25) having a valve surface (26) adjacent to an upper surface (31) of the hydraulic block (25) in which receptacles (6', 7', 8', 13', 21', 22') for the solenoid valves (6, 7, 8, 13, 21, 22) of the brake pressure control are arranged, the receptacles (21') for the inlet valves (21) and / or the receptacles (22') for the outlet valves (22) of the brake pressure control are arranged on the valve surface (26) of the hydraulic block (25) offset in the longitudinal direction of the upper surface (31) of the hydraulic block (25) and laterally with respect to the upper surface (31) of the hydraulic block (25); The hydraulic block (25) has a cylinder (18) for a non-human brake pressure generator (5) perpendicular to the valve face (26) and a connection (29) for a brake fluid storage container (12) on the top face (31), from which a pipe (20) extends in the direction of the cylinder (18) of the non-human brake pressure generator (5), the pipe transitioning to a pipe (20) parallel to the cylinder (18) of the non-human brake pressure generator (5) and communicating with the cylinder (18) of the non-human brake pressure generator (5) by a notch (51).

11. 11. The hydraulic block according to claim 8, wherein the hydraulic block (25) has three connections (29) for the brake fluid reservoir (12) on the upper surface (31), the central connection (29) of which communicates with the cylinder (18) of the piston-cylinder unit (14) of the non-human brake pressure generator (5) in the hydraulic block (25).

12. 12. The hydraulic block according to claim 1, wherein the hydraulic block has a recess (37) in the upper surface (31) and in a surface (38) adjacent to the valve surface (26) that extends to the upper surface (31) for mounting a brake fluid storage container (12) on the upper surface (31) of the hydraulic block (25).

13. 13. The hydraulic block according to claim 1, wherein the hydraulic block (25) has a master brake cylinder bore (4'), a position detector bore (43) parallel to the master brake cylinder bore (4') for a position detector for a master brake cylinder piston (53), and a receiving portion (44) for a stroke or position sensor (45) arranged perpendicular to the position detector bore (43).

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