Hydraulic block for a hydraulic unit of a brake pressure regulating section of a hydraulic vehicle brake system

Abstract

The invention relates to a space-saving drilling of a hydraulic block (25) of a brake pressure regulating portion of a sliding-regulated hydraulic external force vehicle brake system.

Description

Technical Field

[0001] This invention relates to a hydraulic block of a hydraulic unit for a brake pressure regulating section of a hydraulic vehicle braking system. The hydraulic block is particularly suitable for vehicle braking systems having an external force and / or sliding adjustment section. Background Technology

[0002] Document DE 10 2016 202 113 A1 discloses a narrow, square hydraulic block for a hydraulic unit in a sliding-adjustable hydraulic external-force vehicle braking system. The hydraulic block houses a main brake cylinder bore and an external-force cylinder bore. The main brake cylinder bore extends from one narrow side to the opposite narrow side, and the external-force cylinder bore extends perpendicularly through the main brake cylinder bore to both opposite large sides of the hydraulic block. Furthermore, the known hydraulic block has a blind hole serving as a receiving portion for a pedal travel simulator. To generate braking pressure using external force, an external-force piston can be moved using an electric motor via a ball screw drive mechanism in the external-force cylinder bore. The electric motor is arranged coaxially with the external-force cylinder bore on the outside of the hydraulic block, and the ball screw drive mechanism is also coaxially located between the electric motor and the external-force piston. The electric motor and ball screw drive mechanism form an external-force drive device and, together with the external-force piston and external-force cylinder bore, form an external-force braking pressure generator for the hydraulic vehicle braking system. Summary of the Invention

[0003] The hydraulic block according to the invention provides a hydraulic unit for adjusting the brake pressure in a hydraulic vehicle braking system. Specifically, the hydraulic block according to the invention is provided for vehicle braking systems and / or externally driven vehicle braking systems having a slip adjustment mechanism. A brake pressure adjustment mechanism means generating and adjusting brake pressure in the vehicle braking system, the brake circuit of the vehicle braking system, and / or the hydraulic wheel brakes of the vehicle braking system connected to the hydraulic block. This brake pressure adjustment mechanism can also include a slip adjustment mechanism. Slip adjustment mechanisms are, for example, anti-lock braking system (ABS), drive slip adjustment, and / or driving dynamics adjustment; commonly used abbreviations for these are ABS, ASR, and / or FDR. Slip adjustment mechanisms are known and will not be described further here.

[0004] Hydraulic blocks are used for the mechanical fastening and hydraulic connection of hydraulic structural components in vehicle braking systems, as well as for brake pressure generation and / or brake pressure regulation and / or slip adjustment. These hydraulic structural components primarily include solenoid valves, check valves, hydraulic accumulators, damping chambers, and pressure sensors. The hydraulic structural components are fastened in a receiving portion of the hydraulic block, which is typically constructed as a cylindrical recess, blind hole, or through hole, with some sections having a stepped diameter. "Connection" means that the receiving portion or the hydraulic structural components fastened in it are connected via piping within the hydraulic block according to the vehicle braking system's hydraulic wiring diagram. However, piping is usually not necessarily drilled into the hydraulic block.

[0005] When equipped with a hydraulic structural element or its sliding adjustment part of a vehicle braking system, the hydraulic block forms a hydraulic unit, wherein "equipped" means that the hydraulic structural element is fastened in a receiving part provided therefor in the hydraulic block.

[0006] Furthermore, the hydraulic block particularly has a connector for the brake line leading to the hydraulic wheel brake of the vehicle braking system. The hydraulic block can also have a connector for the brake line from the master brake cylinder; however, preferably, the master brake cylinder is integrated into the hydraulic block, i.e., the hydraulic block has, for example, a master brake cylinder bore.

[0007] The present invention relates in particular to the arrangement of hydraulic structural elements or their receiving portions and their hydraulic connections in a hydraulic block.

[0008] To save space in accommodating the inlet and / or outlet valves of the sliding adjustment section, one embodiment of the invention arranges the receiving portions of these valves in the hydraulic block not, as is common, arranged side-by-side in a straight line within the hydraulic block, but rather additionally arranged laterally offset from their conventional arrangement. For example, the receiving portions for the inlet valve are alternately arranged in the hydraulic block on two relatively parallel lines, rather than on a single straight line. And / or, for example, one receiving portion for the outlet valve is laterally offset from other receiving portions for the outlet valve arranged in a straight line.

[0009] Preferably, the hydraulic block according to the invention has a main brake cylinder bore for axially movably receiving one or more main brake cylinder pistons for muscle force manipulation of a vehicle braking system, an external force cylinder bore for generating braking pressure using external force, and / or a simulator cylinder bore or a receiving portion for a pedal travel simulator.

[0010] The brake fluid reservoir is placed on a side of the hydraulic block, referred to herein as the upper side, which is preferably the narrow side of the hydraulic block. For this purpose, the hydraulic block has one or more connectors on the upper side for the brake fluid reservoir. To secure the brake fluid reservoir to the upper side of the hydraulic block, one design of the invention provides a recess in the side of the hydraulic block adjacent to the upper side, extending upwards. For example, a fastening tab protruding from the lower side of the brake fluid reservoir extends into the recess, and this fastening tab can be secured, for example, with a screw, without the screw head or other part of the fastening protruding beyond the surface of the adjacent side of the hydraulic block. Thus, insertion of the electrical plug for contacting the brake pressure regulating unit, located on the adjacent side, is not hindered.

[0011] For connection to the external cylinder bore, one design of the present invention includes a conduit within the hydraulic block that extends from one of the fittings for the brake fluid reservoir in the upper part to the external cylinder bore. This conduit extends axially or axially parallel from the fitting for the brake fluid reservoir to the external cylinder bore, and after a bend, is guided externally parallel to the external cylinder bore, and then enters the external cylinder bore with another bend. In this way, the external cylinder bore can be connected to the brake fluid reservoir via several bends. A check valve that allows flow towards the external cylinder bore can be installed in the conduit, particularly in and immediately after the fitting for the brake fluid reservoir.

[0012] The specification describes improvements and advantageous designs of the present invention.

[0013] Here, through holes or blind holes, referred to as "pipes" or "holes" or "cylinder holes," can also be made in a different way than by drilling.

[0014] All features disclosed in the specification and drawings can be implemented individually or in virtually any combination in embodiments of the invention. The following embodiments of the invention are feasible in principle, having only one or more features rather than all the features of the embodiments of the invention. The following embodiments of the invention are particularly feasible in which the receiving portions for the inlet valve and / or the receiving portions for the outlet valve are arranged differently from those described. Attached Figure Description

[0015] The invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. Wherein:

[0016] Figure 1 The diagram shows the hydraulic circuit of an external force vehicle braking system with a sliding adjustment section.

[0017] Figure 2 A perspective view of the hydraulic block according to the invention, viewed from the valve side, shows the hydraulic block.

[0018] Figure 3 The image shows the view from the motor side opposite the hydraulic block. Figure 2 The hydraulic block; and

[0019] Figure 4 A three-dimensional view showing the motor side shows the motor with... Figure 2 and Figure 3 A hydraulic unit with hydraulic blocks. Detailed Implementation

[0020] Figure 1A hydraulic multi-circuit external force vehicle braking system, namely a dual-circuit external force vehicle braking system 1, is shown. It has two braking circuits I and II and four hydraulic wheel brakes 2, wherein the two hydraulic wheel brakes are respectively connected to braking circuits I and II. The vehicle braking system 1 has a dual-circuit master brake cylinder 4 that can be operated by muscle force using a foot brake pedal 3 and an external force braking pressure generator 5. The two braking circuits I and II are hydraulically connected in parallel to the master brake cylinder 4 and the external force braking pressure generator 5, wherein each braking circuit I and II is connected to the master brake cylinder 4 via a release valve 6 and to the external force braking pressure generator 5 via an external force valve 7.

[0021] The piston cylinder unit 9 with spring-loaded piston 10 is connected to the chamber of one of the two brake circuits I, namely the dual-circuit master brake cylinder 4, via simulator valve 8 as a pedal stroke simulator 11.

[0022] The master brake cylinder 4 has a pressureless brake fluid reservoir 12, to which two chambers or brake circuits I and II are connected. One of the two chambers of the master brake cylinder 4 is directly connected to the brake fluid reservoir 12 via a test valve 13 and hydraulically in parallel with it via a check valve that allows flow toward the master brake cylinder 4, as well as the other chambers of the master brake cylinder 4.

[0023] The external braking pressure generator 5 has a piston cylinder unit 14, in which the piston 15 is movable within the cylinder 18 of the piston cylinder unit 14 via a threaded transmission device 17 using an electric motor 16 to generate braking pressure using external force. The two braking circuits I and II of the vehicle braking system 1 are connected to the cylinder 18 of the external braking pressure generator 5 via two external force valves 7.

[0024] The cylinder 18 of the piston cylinder unit 14 of the external braking pressure generator 5 is connected to the brake fluid reservoir 12 via a check valve 19 that allows flow towards the cylinder 18, and is also directly connected to the brake fluid reservoir 12 via a line 20 without an intermediate valve connection. The piston 10 of the external braking pressure generator 5 passes through the inlet of the line 20 at the start of its movement, thereby hydraulically disengaging the piston cylinder unit 14 of the external braking pressure generator 5 from the brake fluid reservoir 12 when the external braking pressure generator 5 is operated.

[0025] Each wheel brake 2 is connected to one of the two brake circuits I and II via an inlet valve 21 and to a pressureless brake fluid reservoir 12 via an outlet valve 22.

[0026] The external braking pressure generator 5, inlet valve 21, and outlet valve 22 form a brake pressure regulating valve device. This device enables personalized wheel slip adjustments, such as anti-lock braking system (ABS), drive slip adjustment, and driving dynamics adjustment. These slip adjustments are commonly abbreviated as ABS, ASR, and FDR. These slip adjustments are known and will not be further elaborated upon here.

[0027] In the embodiments shown and described in this invention, the separation valve 6, the external force valve 7, the simulator valve 8, the test valve 13, the inlet valve 21, and the outlet valve 22 are two-position two-way solenoid valves, wherein the separation valve 6, the test valve 13, and the inlet valve 21 are open in their initial position with no flow, and the external force valve 7, the simulator valve 8, and the outlet valve 22 are closed in their initial position with no flow.

[0028] Pressure sensors 23 and 24 are connected to one of the two chambers of the master brake cylinder 4 and to cylinder 18 of the external force brake pressure generator 5. A displacement or position sensor 45 is arranged on the pedal rod that connects the foot brake pedal 3 to the piston 53 of the master brake cylinder, which is used to measure the piston-or pedal stroke or piston-or pedal position of the master brake cylinder piston 53 or the foot brake pedal 3.

[0029] The braking is achieved by using external force braking pressure generator 5. To do this, external force valve 6 is opened and braking pressure is generated by external force braking pressure generator 5. This braking pressure is applied to wheel brake 2 through open inlet valve 21, and the wheel brake is operated in this way.

[0030] During operational braking, the master brake cylinder 4 is hydraulically disconnected from brake circuits I and II by closing the release valve 6. This master brake cylinder serves as a target value generator for the brake pressure generated by the external braking pressure generator 5. The simulator valve 8 is opened during operational braking, allowing the master brake cylinder 4 to squeeze brake fluid into the pedal travel simulator 11, and enabling piston and pedal travel on the master brake cylinder 4.

[0031] In the event of interference or malfunction of the external braking pressure generator 5, auxiliary braking can be achieved by the muscle force operation of the main brake cylinder 4, wherein the release valve 6 remains open and the external force valve 7 remains closed.

[0032] The hydraulic structural components of the vehicle braking system 1 are arranged in Figure 2 and Figure 3 The hydraulic block 25 is shown in the middle and above. The hydraulic block 25 is clearly drawn, allowing the drilled holes to be seen. Figure 2 The valve side 26 of the hydraulic block 25 is shown, and Figure 3The opposing motor side 27 of the hydraulic block is shown. In this embodiment, the hydraulic block 25 is a flat, square metal block used for the mechanical fastening and hydraulic connection of the hydraulic structural components of the vehicle braking system 1. When equipped with hydraulic structural components, the hydraulic block 25 forms the hydraulic unit 32 of the vehicle braking system 1, which... Figure 4 The image is shown in a perspective view of the motor side 27. "Flat" means that the width or length of the hydraulic block 25 is approximately three to four times its thickness. In this embodiment, the two large, opposing sides of the hydraulic block 25 are nearly square and form the valve side 26 and the motor side 27.

[0033] In the hydraulic block 25, the main brake cylinder bore 4' of the main brake cylinder 4, the external force cylinder bore of the cylinder 18 of the external force brake pressure generator 5, the cylinder bore 28 of the piston cylinder unit 9 of the pedal stroke simulator 11, the receiving parts for solenoid valves 6, 7, 8, 13, 21, 22, the receiving part for check valve 19, the receiving parts for pressure sensors 23, 24, the connector 29 for the brake fluid reservoir 12, and the connector 30 for the hydraulic wheel brake 2 are mounted on the hydraulic block 25 via brake lines. The receiving parts for the solenoid valves, check valves, and pressure sensors are located in... Figure 2 and Figure 3 The Chinese text uses a supplementary backslash (`) to indicate the presence of a string. Figure 1 The corresponding hydraulic structural components are labeled with the same reference numerals.

[0034] The receiving portion is a cylindrical, partially stepped diameter recessed portion or blind hole in the hydraulic block 25. The hydraulic structural element is inserted into the receiving portion and pressure-sealed in a circumferential manner. The hydraulic section forming the actual valve in the solenoid valve is located in the receiving portion, armature, and magnetic coil housed in the valve dome, protruding from the valve side 26 of the hydraulic block 1. The connector 29 for the brake fluid reservoir 12 is also a blind hole; a connecting sleeve protruding from the bottom of the brake fluid reservoir 12 is inserted into this blind hole and sealed with a sealing ring. The connecting hole 30 for the wheel brake 2 is also a blind hole; the brake line leading to the wheel brake 2 is pressure-sealed in this blind hole using a press-fit sleeve (not shown) with a so-called self-locking technique. The brake line connector can also be implemented using a threaded sleeve, for example. The piping implemented as holes in the hydraulic block 1 connects the cylinder bore, the receiving portion for the hydraulic structural element, and the connectors 29 and 30 for the brake fluid reservoir 12 and the wheel brake 2 according to… Figure 1 The hydraulic circuit diagrams are connected to each other.

[0035] "Drilling" or "boring" refers to the cylinder bore, the receiving part for the solenoid valve, and the connecting hole housed in the hydraulic block 1, as well as the holes forming pipelines that connect them according to the hydraulic wiring diagram. The hydraulic block 25 is Cartesian-drilled, meaning that holes, receiving parts, joints, pipelines, etc., are arranged parallel and perpendicular to each other and are housed within the hydraulic block 25 on its sides and edges. This does not exclude separately inclined extending pipelines and holes. "Equipped" means that hydraulic structural elements are arranged in their receiving parts.

[0036] The brake fluid reservoir 12 is positioned on the upper side 31 of the hydraulic block 25, adjacent to the valve side 26 and the motor side 27, such that the connecting sleeve on the bottom of the brake fluid reservoir 12 is inserted into the connector 29 in the upper side 31 of the hydraulic block 25. The brake fluid reservoir 12 has three chambers, two of which are connected to the two chambers of the master brake cylinder 4, and one of the chambers is connected to the cylinder 18 of the piston cylinder unit 14 of the external force brake pressure generator 5 via a check valve 19 and a line 20. The connectors 29 are arranged sequentially and generally in a V-shape along the longitudinal direction of the upper side 31 of the hydraulic block 25, that is, the middle connector of the three connectors 29 is arranged transversely to the upper side 31 and staggered relative to the two other connectors 29 in the upper side 31 of the hydraulic block 25.

[0037] The brake fluid reservoir 12 has two eye plates 33 (at which the brake fluid reservoir is fastened to the upper side 31 of the hydraulic block 25 by means of shoulder screws 34) and an eye plate 35 protruding from the bottom, at which the brake fluid reservoir is fastened to the hydraulic block 25 by means of pin screws 36. Figure 4 The pin screw 36 is capable of length compensation during the thermal expansion of the hydraulic block 25. The eye plate 35 is located in a recess 37 in the side 38 of the hydraulic block 25 adjacent to the upper side 31, the valve side 26, and the motor side 27, which extends to the upper side 31. The screw head of the pin screw 36 is also recessed into the recess 37, so that it does not protrude on the side 38.

[0038] A controller cover 39 is arranged on the valve side 26 of the hydraulic block 25. This controller cover has an electronic controller for the brake pressure regulating section. The electronic controller has a multi-pole electrical connector 40 located on the side 38 of the hydraulic block 25. Since the eye plate 35 of the brake fluid reservoir 12, together with the pin screw 36, is recessed in the recess 37, the eye plate 35 and the pin screw 36 do not obstruct the insertion and removal of the plug (not shown) into the connector 40.

[0039] The main brake cylinder bore 4' forming the main brake cylinder 4 is arranged in the hydraulic block 25 above the center of the hydraulic block 25, spaced apart from the upper side 31 and parallel to the upper side 31, the valve side 26 and the motor side 27.

[0040] The cylinder 18 of the piston cylinder unit 14 of the external braking pressure generator 5 is mounted perpendicularly to the valve side 26 and the motor side 27 in the motor side 27 of the hydraulic block 25. A protrusion 41 protrudes from the valve side 26 and from the hydraulic block 25, and the cylinder 18 of the external braking pressure generator 5 extends into this protrusion. The cylinder 18 of the piston cylinder unit 14 of the external braking pressure generator 5 is mounted perpendicularly to the master brake cylinder bore 4' and is positioned close to the master brake cylinder bore 4' in the hydraulic block 25. "Close to" means that there is no cavity between the cylinder 18 of the piston cylinder unit 14 of the external braking pressure generator 5 and the master brake cylinder bore 4' in the hydraulic block 25.

[0041] As described, cylinder 18 of piston cylinder unit 14 of external brake pressure generator 5 is connected to connector 29 in the middle of brake fluid reservoir 12 via check valve 19. For this purpose, conduit 20 is guided coaxially from the bottom of connector 29 to near the periphery of cylinder 18, from where it bends at a right angle, parallel to the axial direction of cylinder 18, along a raised portion 41 on the outer side of cylinder 18, and enters cylinder 18 via groove 51. Groove 51 is a circumferential groove in cylinder 18 of external brake pressure generator 5, extending only on a portion of the periphery of cylinder 18. This groove can also be implemented completely circumferentially. Generally, groove 51 can also be understood as a bend through which conduit 20 enters cylinder 18. At the bottom of connector 29, check valve 19 is arranged in a diameter enlargement of conduit 20. This diameter enlargement forms a receiving portion 19' for check valve 19.

[0042] The cylinder bore 28 of the pedal travel simulator 11 is located adjacent to the cylinder 18 of the external braking pressure generator 5, and is vertically positioned in the valve side 26 of the hydraulic block 25 between the cylinder 18 of the piston cylinder unit 14 of the external braking pressure generator 5 and the corner of the hydraulic block 25. "Adjacent to" means that there is no cavity in the hydraulic block 25 between the cylinder bore 28 of the pedal travel simulator 11 and the cylinder 18 of the external braking pressure generator 5.

[0043] Parallel to and close to the ground along with the master brake cylinder bore 4', the hydraulic block 25 has a hole that is significantly thinner than the position detector hole 43 for the master brake cylinder piston (master piston or rod piston) 53. The position detector hole 43 opens to the same side as the master brake cylinder bore 4', and in this embodiment, to the fastening side 46 of the hydraulic block 25. A rod-shaped detector bracket is recessed into the position detector hole 43 and is mounted on a piston rod 42 outside the hydraulic block 25. This piston rod is connected to the master brake cylinder piston 53 (not shown), so that the detector bracket moves together with the master brake cylinder piston 53. A permanent magnet located in the position detector hole 43 is fastened to the detector bracket as a signal detector, for example.

[0044] A blind hole, perpendicular to the position detector hole 43, is disposed in the hydraulic block 25 as a receiving portion 44 for the displacement or position sensor 45. The receiving portion 44 is located above the position detector hole 43, that is, on the side of the position detector hole facing the upper side 31 of the hydraulic block 25, and is close to the inlet of the position detector hole 43, or close to the inlet of the master brake cylinder hole 4', or close to the fastening side 46 of the hydraulic block 25.

[0045] The master brake cylinder 4 and the position detector hole 43 are open on the fastening side 46 of the hydraulic block 25, which is adjacent to the valve side 26, the motor side 27 and the upper side 31 and faces the side 38 with the recess 37. The hydraulic block 25 is fastened to the front bulkhead of the vehicle (not shown) via the fastening side 46, so that the upper side 31 with the brake fluid reservoir 12 is located above.

[0046] Coaxially with cylinder 18 of piston cylinder unit 14 of external force braking pressure generator 5, electric motor 16 is arranged outside motor side 27 of hydraulic block 25. Coaxially with electric motor 16 and cylinder 18, a planetary gearbox (not shown) as a reducer and a ball screw drive mechanism are arranged in motor housing of electric motor 16 and cylinder 18 of external force braking pressure generator 5. The ball screw drive mechanism is used to convert the rotational drive of electric motor 16 into translational motion to move piston 15 of piston cylinder unit 14 of external force braking pressure generator 5.

[0047] Between cylinder 18 of piston cylinder unit 14 of external force braking pressure generator 5 and lower side 47 of hydraulic block 25 opposite to upper side 31, three through holes passing from valve side 26 to motor side 27 are installed in hydraulic block 25 as motor connection holes 48 to supply power to electric motor 16 of external force braking pressure generator 5. The motor connection holes 48 are located in hydraulic block 25 between cylinder 18 and lower side 47 on an imaginary arc-shaped portion surrounding cylinder 18.

[0048] Furthermore, the hydraulic block 25 has a signal hole 49 for control lines and / or signal lines to or from the electric motor 16. Through the signal hole 49, a rotation angle sensor 50 of the electric motor 16 can, for example, be connected to an electronic controller disposed in a controller cover 39 on the valve side 26 of the hydraulic block 25. The signal hole 49 extends from the valve side 26 to the motor side 27 and is disposed between the cylinder 18 of the external force braking pressure generator 5 and the lower corner of the hydraulic block 25, which is located between the fastening side 46 and the lower side 47 of the hydraulic block 25.

[0049] The receiving portion for the solenoid valve is arranged in the valve side 26 of the hydraulic block 25. The receiving portions 21' for the inlet valve 21 are arranged side by side between the bottom of the connector 29 for the brake fluid reservoir 12 and the master brake cylinder bore 4', and are alternately arranged in the valve side 26 with a slight offset from their diameter along the direction of the upper side 31 and the master brake cylinder 4.

[0050] The three receiving portions 22' of the outlet valve 22 are arranged side-by-side in the valve side 26 of the hydraulic block 25 along an imaginary straight line parallel to the upper side 31 and at the height of the master brake cylinder bore 4'. These three receiving portions 22' of the outlet valve 22 are arranged in an axial plane of the master brake cylinder bore 4' or in a plane parallel to the axial plane of the master brake cylinder bore 4', which intersects with the master brake cylinder bore 4'. The first or last receiving portion 22' of the outlet valve 22 is offset from the valve side 26 of the hydraulic block 25 along the direction of the upper side 31. The receiving portion 22' closest to the fastening side 46 is offset relative to the other three receiving portions 22' of the outlet valve 22. The receiving portions 21' of the inlet valve 21 and the receiving portions 22' of the outlet valve 22 of the wheel brake 2 are offset from each other in pairs, that is, they are offset from each other perpendicular to the upper side 31 of the hydraulic block or parallel to the fastening side 46 of the hydraulic block.

[0051] The master brake cylinder bore 4' has two circumferential sealing grooves 54 for each master brake cylinder piston 53, in which piston seals (sealing rings) 55 are arranged. The sealing grooves 54 are only slightly axially spaced from each other, approximately as large as the width of the sealing grooves 54. Three receiving portions 22' for the outlet valve 22, located within the height of the master brake cylinder bore 4', are directly connected to the master brake cylinder bore 4' via conduits that coaxially pass through the bottom of the receiving portions 22' radially or secantly into the master brake cylinder bore 4'. Here, one of the receiving portions 22' for one of the outlet valves 22 is connected to the master brake cylinder bore 4' between the two sealing grooves in the sealing grooves 54.

[0052] The receiving part 13' for the test valve 13 is disposed in the valve side 26 of the hydraulic block 25 between the mutually offset receiving part 22' for the outlet valve 22 and the fastening side 46 of the hydraulic block 25.

[0053] In the middle between the receiving portions 22' of the outlet valve 22, a flat recess is installed on the valve side 26 of the hydraulic block 25. This recess serves as the receiving portion 24' of the pressure sensor 24 for the cylinder 18 of the external braking pressure generator 5. The recess communicates with the pipeline 20 through a coaxial hole in its bottom. This pipeline leads from the connector 29 in the middle of the brake fluid reservoir 12 to the cylinder 18 of the external braking pressure generator 5.

[0054] The receiving portion 23' of the pressure sensor 23 for the master brake cylinder 4 is mounted slightly below the master brake cylinder bore 4' and near the closed end of the master brake cylinder bore in the valve side 26 of the hydraulic block 25. The receiving portion 23' of the pressure sensor 23 is directly connected to the master brake cylinder bore 4' via a conduit that coaxially passes through the bottom of the receiving portion 23' and extends into the master brake cylinder bore 4' in a secant direction.

[0055] Between the receiving portion 23' of the pressure sensor 23 for the master brake cylinder 4 and the cylinder 18 of the external force brake pressure generator 5, the receiving portion 6' of one of the two separation valves 6 is mounted on the valve side 26 of the hydraulic block 25. The receiving portion 6' of the other external force valve 6 is mounted on the opposite side of the cylinder 18 of the external force brake pressure generator 5, between the cylinder 18 and the fastening side 46 of the hydraulic block 25, on the valve side 26 of the hydraulic block 25.

[0056] The receiving portion 7' ​​for the external force valve 7 is disposed on the opposite side of the cylinder 18 of the external force braking pressure generator 5 within the valve side 26 of the hydraulic block 25. One of the two receiving portions 7' is located between the receiving portion 23' for the pressure sensor 23 of the master brake cylinder 4 and the fastening side 46 of the hydraulic block 25, and the other receiving portion 7' ​​is located on the opposite side of the cylinder 18 between the cylinder and the fastening side of the hydraulic block. The two receiving portions 7' for the external force valve 7 are connected to the cylinder 18 of the external force braking pressure generator 5 via a conduit 52 extending through the hydraulic block 25 parallel to the upper side 31 and perpendicular to the fastening side 46.

[0057] The receiving part 8` for the simulator valve 8 is located between the receiving part 23` for the pressure sensor 23 for the master brake cylinder 4 and the cylinder bore 28 of the pedal stroke simulator 11, and is offset from the cylinder bore 28 along the direction of the side 38 of the hydraulic block 25 having the recess 37.

Claims

1. A square hydraulic block used in a hydraulic unit of the brake pressure regulating section of a hydraulic vehicle braking system, wherein, The hydraulic block (25) has a valve side (26) which is adjacent to the upper side (31) of the hydraulic block (25), and a receiving part (6`, 7`, 8`, 13`, 21`, 22` of the solenoid valve (6, 7, 8, 13, 21, 22) for the brake pressure regulating part is arranged in the valve side. The feature is that, along the edge adjacent to the upper side (31) on the valve side (26) and perpendicular to the edge, the receiving portion (21') of the inlet valve (21) for the brake pressure regulating section and / or the receiving portion (22') of the outlet valve (22) are staggered and arranged in the valve side (26) of the hydraulic block (25). The hydraulic block (25) has a main brake cylinder bore (4') with two surrounding sealing grooves (54) of the piston seal (55) of the main brake cylinder piston (53), and the receiving part (22') for the outlet valve (22) is directly connected to the main brake cylinder bore (4') through a conduit that coaxially passes through the bottom of the receiving part (22') radially or along a secant direction between the two sealing grooves (54) into the main brake cylinder bore (4').

2. The hydraulic block according to claim 1, characterized in that, The receiving portion (21') for the inlet valve (21) is arranged side by side with the adjacent edge of the upper side (31) along the valve side (26), the receiving portion being arranged alternately and perpendicularly to the edge in the valve side (26) of the hydraulic block (25), and / or, perpendicularly to the edge, one receiving portion (22') for the outlet valve (22) is arranged in the valve side (26) of the hydraulic block (25) in a staggered manner relative to the other receiving portions (22') for the outlet valve (22).

3. The hydraulic block according to claim 1 or 2, characterized in that, Parallel to the upper side (31) and / or parallel to the fastening side (46) of the hydraulic block (25), the receiving portion (21') for the inlet valve (21) and the receiving portion (22') for the outlet valve (22) are respectively arranged in pairs, staggered from each other, in the valve side (26) of the hydraulic block (25).

4. The hydraulic block according to claim 1 or 2, characterized in that, The receiving portion (22') for the outlet valve (22) is arranged in the axial plane of the main brake cylinder bore (4') or in a plane parallel to the axial plane of the main brake cylinder bore (4'), which intersects with the main brake cylinder bore (4').

5. The hydraulic block according to claim 1 or 2, characterized in that, The hydraulic block (25) has a receiving portion (7') for an external force valve (7) in the valve side (26), parallel to the upper side (31) and / or parallel to the fastening side (46) of the hydraulic block (25), which is offset from the receiving portion (21') for the inlet valve (21) and / or from the receiving portion (22') for the outlet valve (22).

6. The hydraulic block according to claim 1 or 2, characterized in that, On the valve side (26), on both sides of the cylinder (18) of the external force braking pressure generator (5), the hydraulic block (25) has two receiving portions (7') for the two external force valves (7), which are connected to the cylinder (18) by pipes (52) extending in the hydraulic block (25) perpendicular to the fastening side (46) of the hydraulic block (25) and / or parallel to the upper side (31) of the hydraulic block (25).

7. The hydraulic block according to claim 1 or 2, characterized in that, The hydraulic block (25) has a receiving portion (24') for a pressure sensor (24) for an external force braking pressure generator (5) in the valve side (26), the receiving portion being located on the side of the receiving portion (21') for the inlet valve (21) away from the upper side (31) of the hydraulic block (25) and / or between the receiving portions (22') for the outlet valve (22).

8. The hydraulic block according to claim 1 or 2, characterized in that, The hydraulic block (25) has a cylinder (18) for an external braking pressure generator (5) perpendicular to the valve side (26) and a connector (29) for a brake fluid reservoir (12) in the upper side (31). A pipe (20) extends from the connector toward the cylinder (18) of the external braking pressure generator (5), and the pipe is transferred to a pipe (20) parallel to the cylinder (18) of the external braking pressure generator (5). The pipe enters the cylinder (18) of the external braking pressure generator (5) with a bend.

9. The hydraulic block according to claim 1 or 2, characterized in that, The pipeline is connected to the cylinder (18) of the external force braking pressure generator (5) through a groove (51) at a bend.

10. The hydraulic block according to claim 1 or 2, characterized in that, The hydraulic block (25) has three connectors (29) for a brake fluid reservoir (12) in the upper side (31), and the middle connector (29) of these connectors is connected to the cylinder (18) of the piston cylinder unit (9) of the external force brake pressure generator (5) in the hydraulic block (25).

11. The hydraulic block according to claim 1 or 2, characterized in that, In the side (38) adjacent to the upper side (31) and the valve side (26), the hydraulic block (25) has a recess (37) extending to the upper side (31) for securing the brake fluid reservoir (12) to the upper side (31) of the hydraulic block (25).

12. The hydraulic block according to claim 1 or 2, characterized in that, The hydraulic block (25) has a position detector hole (43) parallel to the main brake cylinder bore (4') for a position detector of the main brake cylinder piston (53), and a receiving portion (44) for a displacement or position sensor (45). The receiving portion is arranged at a certain distance from the upper side (31) of the hydraulic block (25) and the fastening side (46) of the valve side (26) and / or the upper side (31) of the hydraulic block (25), the distance being no greater than the thickness of the hydraulic block (25) perpendicular to the valve side (26).

Images