EP3562717A1 - Hydraulikblock für ein hydraulikaggregat einer bremsregelung einer hydraulischen fahrzeugbremsanlage - Google Patents

Hydraulikblock für ein hydraulikaggregat einer bremsregelung einer hydraulischen fahrzeugbremsanlage

Info

Publication number
EP3562717A1
EP3562717A1 EP17798214.7A EP17798214A EP3562717A1 EP 3562717 A1 EP3562717 A1 EP 3562717A1 EP 17798214 A EP17798214 A EP 17798214A EP 3562717 A1 EP3562717 A1 EP 3562717A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
hydraulic block
accumulator
piston
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17798214.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Michael Schlitzkus
Rainer Fuerst
Thomas Zander
Alexander Bareiss
Michael Loeffler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3562717A1 publication Critical patent/EP3562717A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/21—Accumulator cushioning means using springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings
    • F15B2201/4056—Housings characterised by the attachment of housing components

Definitions

  • Hydraulic block for a hydraulic unit of a brake control of a hydraulic vehicle brake system
  • the invention relates to a hydraulic block for a hydraulic unit of a brake control of a hydraulic vehicle brake system having the features of the preamble of claim 1. Furthermore, the invention relates to a method for assembling a hydraulic accumulator on such a hydraulic block with the features of the preamble of claim 6.
  • brake control is in particular a slip control, for example, a anti-lock, traction and / or vehicle dynamics control / electronic stability program thought, for which the abbreviations ABS, ASR, FDR / ESP are in use.
  • slip control hydraulic vehicle brake systems are known from passenger cars and motorcycles and are not discussed here.
  • a brake control can also be a brake pressure or brake force control of a hydraulic power-brake system with or without slip control.
  • the core of a slip control is a hydraulic unit which has a hydraulic block which is equipped with hydraulic components of the slip control and connected by brake lines to a master cylinder and to which one or more hydraulic wheel brakes are connected by brake lines. Also known for power-brake systems is also a master cylinder integrated in the hydraulic block. Hydraulic components of the cruise control include solenoid valves, hydraulic pumps (usually piston pumps), non-return valves, hydraulic accumulators, damper chambers and pressure sensors.
  • the hydraulic block is typically on block-shaped metal block, which serves for a mechanical fastening and hydraulic connection of the hydraulic components of the slip control. Interconnection means a hydraulic connection of the hydraulic components according to a hydraulic circuit diagram of the slip control. Equipped with the hydraulic components, the hydraulic block forms a hydraulic unit.
  • the published patent application DE 10 2007 001 645 A1 discloses a hydraulic accumulator for a slip-controlled hydraulic vehicle brake system, which has a storage piston which is accommodated axially movably in a storage cylinder.
  • the storage cylinder is formed by a blind hole in a hydraulic block of a slip control and a cup-shaped storage lid, which is mounted coaxially to the blind hole projecting from the hydraulic block on the hydraulic block.
  • the accumulator piston of the known hydraulic accumulator is guided and sealed exclusively in the storage lid.
  • the hydraulic block according to the invention with the features of claim 1 is provided for a hydraulic unit of a brake control, in particular a slip control of a hydraulic vehicle brake system.
  • the particular block-shaped hydraulic block has one or more hydraulic accumulators with a storage cylinder in an axially movable accumulator piston.
  • the hydraulic block preferably has one or more hydraulic accumulators for each brake circuit of the vehicle brake system.
  • the storage cylinder is formed by a blind hole in the hydraulic block and by a hollow storage cover, which is attached to the hydraulic block projecting from the hydraulic block.
  • the accumulator piston is guided axially displaceably at or near its ends in the blind hole in the hydraulic block and in the accumulator cover.
  • the hydraulic block facing the end of the accumulator piston is sealed in the blind hole in the hydraulic block. Close means a distance of up to about 3, 5 or 7% of a diameter or a length of the storage oil. bens.
  • the storage piston in the blind hole in the hydraulic block which forms part of the storage cylinder of the hydraulic accumulator
  • the hollow storage cover which after its fixing on the hydraulic block the the hydraulic block remote end of the accumulator piston leads to set up on the end remote from the hydraulic block end of the accumulator piston and thereby align coaxially with the accumulator piston and the blind hole.
  • the accumulator piston can first be introduced into the blind hole in the hydraulic block and then the accumulator cover can be placed on the
  • the storage lid is movable radially until the blind hole in the hydraulic block, which forms part of the storage cylinder, until it is fixed to the hydraulic block, so that the storage lid can be centered with the storage piston introduced into the blind hole or centered by the storage piston.
  • the determination of the storage lid on the hydraulic block can be done for example by welding or caulking. Short description of the drawing
  • FIGURE shows an outbreak of a hydraulic block according to the invention with a hydraulic accumulator in an axial section.
  • hydraulic block 1 is a cuboid metal block. It is for a hydraulic unit of a brake control of a not otherwise shown, hydraulic vehicle brake system vorge see.
  • braking controls are, for example, slip control systems such as anti-lock, traction and / or vehicle dynamics control / electronic stability programs, for which the abbreviations ABS, ASR, FDR / ESP are customary.
  • Brake controls are, for example, also brake pressure and braking force controls hydraulic hy- draulic vehicle brake systems with or without
  • the hydraulic block 1 has, for each brake circuit, a hydraulic accumulator 2 with a reservoir piston 3, which is received in an axially movable manner in a storage cylinder 4.
  • the storage cylinder 4 is formed by a cylindrical blind hole 5 in the hydraulic block 1 and a hollow storage cover 6.
  • the storage lid 6 is a hollow cylindrical, closed at one end, cup-shaped deep-drawn part made of metal, which has a flange 7 at an open end for its attachment to the hydraulic block 1.
  • the storage cover 6 is coaxial with
  • blind hole 5 arranged on the hydraulic block 1 and is from the hydraulic block 1 from.
  • the storage lid 6 is fixed by a circumferential weld 8 at its flange 7 on the hydraulic block 1.
  • Other attachment options such as caulking or gluing are also possible.
  • shape, manufacturing method and material of the hollow storage cover 6 are not mandatory for the invention.
  • the accumulator piston 3 is a hollow piston which is open at one end and closed at another end and which has a cavity 9 which, in the illustrated and described embodiment of the invention, faces away from the hydraulic block 1.
  • the accumulator piston 3 is sealed at its closed, the hydraulic block 1 facing the end with a piston seal 10 in the blind hole 5 in the hydraulic block 1.
  • the piston seal 10 is a special sealing ring whose annular cross-section has the shape of an obliquely cut half oval. It is arranged in a circumferential annular step of the accumulator piston 3, which has an acute-angled V-shaped cross-section and is open at the end of the accumulator piston 3 facing the hydraulic block 1. A peripheral surface of the annular step widens conically to the end of the accumulator piston 3, so that the piston seal 10 is held axially on the end of the accumulator piston 3. There are other sealing rings than piston seal 10 possible.
  • the accumulator piston 3 has a flange which forms a first piston guide 11 of the accumulator piston 3, which axially displaceably guides the accumulator piston 3 in the blind hole 5 in the hydraulic block 1, which forms part of the accumulator cylinder 4.
  • the first piston guide 1 1 leads the accumulator piston 3 near its end facing the hydraulic block 1 end. A distance of the first piston guide 1 1 from the end of the accumulator piston 3 is due to an axial thickness of the piston seal 10 arranged there.
  • the accumulator piston 3 At another end facing away from the hydraulic block 1, the accumulator piston 3 has a smaller diameter enlargement, which forms a second piston guide 12.
  • the second piston guide 12 leads the accumulator piston 3 at its end facing away from the hydraulic block 1 axially displaceable in the
  • Storage lid 6 which forms the storage cylinder 4 together with the blind hole 5 in the hydraulic block 1.
  • a bore 13 which opens at a bottom of the blind hole 5 of the hydraulic block 1 connects the blind hole 5 and thus the storage cylinder 4 of the hydraulic accumulator 2 with further hydraulic components, not shown, of the brake or slip control, such as solenoid valves, check valves and / or one hydraulic pump.
  • a helical compression spring is arranged as a piston spring 14 in the storage cover 6 and the cavity 9 of the accumulator piston 3, is supported inside the closed end of the storage cover 6 and acts on the accumulator piston 3 in the direction of the blind hole 5 in the hydraulic block 1.
  • the storage cover 6 has a center hole 24 for ventilation of the storage cylinder 4 on a side facing away from the hydraulic block 1 of the accumulator piston 3.
  • the storage cover 6 can also be designed to be closed.
  • a third possibility for representing a different storage volume of the hydraulic accumulator 2 is an axially shorter or longer storage cover 6, as indicated in the drawing with dashed lines.
  • the accumulator piston 3 is introduced into the blind hole 5 in the hydraulic block 1, which forms part of the accumulator cylinder 4.
  • the piston spring 14 is inserted into the cavity 9 of the accumulator piston 3 designed as a hollow piston, and the hollow cylindrical accumulator cover 6 is placed on the end of the accumulator piston 3 which faces away from the hydraulic block 1 and protrudes from the hydraulic block 1.
  • the first piston guide 1 which leads the accumulator piston 3 in the blind hole 5 in the hydraulic block 1, centered at the same time also the accumulator piston 3 in the blind hole 5, which forms part of the storage cylinder 4 of the hydraulic accumulator 2.
  • the second piston guide 12 which guides the accumulator piston 3 in the storage cover 6, centers the accumulator cover 6 on the accumulator piston 3, whereby the accumulator cover 6 is centered, that is, aligned coaxially with the blind hole 5 in the hydraulic block 1. Subsequently, the storage lid 6 is welded to the hydraulic block 1 or otherwise determined. Until it is fixed to the hydraulic block 1, the storage cover 6 is movable radially to the blind hole 5 and can thereby be centered by means of the storage piston 3 with respect to the blind hole 5.
  • the order of assembly of the accumulator piston 3, the piston spring 14 and the reservoir cover 6 is not mandatory for the invention but may differ from the order described.
  • solenoid valves 16 are arranged on the same side of the hydraulic block 1 on or in the hydraulic block 1, one of which can be seen in the drawing.
  • the solenoid valves 16 are components of the brake control, for example intake valves and exhaust valves of a slip control.
  • the solenoid valves 16 are pressed into diameter-graded blind holes, which form valve receptacles 17, in the hydraulic block 1 and compressed. tightly caulked.
  • Through holes 18, 19, which open into the valve seats 17, the solenoid valves 16 communicate with each other, with brake line connections of a master cylinder not shown or hydraulic wheel brakes, check valves, the hydraulic accumulator 2, a hydraulic pump or other hydraulic components of the brake or slip control.
  • Armature and coils of the solenoid valves 16 are outwardly from the hydraulic block 1, they are located in valve domes 20th
  • a box-shaped valve cover 21 is attached to the hydraulic block 1, which covers the storage lid 6 of the hydraulic accumulator 2 and the valve dome 20.
  • the valve cover 21 protects the storage lids 6 and the valve domes 20 from moisture and dirt, allowing the use of an open storage lid 6 with the center hole 24 in the closed end. It is also possible to provide the storage lid 6 with large breakthroughs.
  • bracket as a storage cover 6, which spans the accumulator piston 3, holds in the blind hole 5 in the hydraulic block 1, which supports the piston spring 14 and circumferentially on two opposite sides of the accumulator piston 3 so far in the circumferential direction, that he the accumulator piston 3 axially displaceable and leads radially.
  • the hydraulic block 1 forms a hydraulic unit, the core of a hydraulic part of

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulating Braking Force (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP17798214.7A 2016-12-29 2017-11-16 Hydraulikblock für ein hydraulikaggregat einer bremsregelung einer hydraulischen fahrzeugbremsanlage Withdrawn EP3562717A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016226304.8A DE102016226304A1 (de) 2016-12-29 2016-12-29 Hydraulikblock für ein Hydraulikaggregat einer Bremsregelung einer hydraulischen Fahrzeugbremsanlage
PCT/EP2017/079394 WO2018121913A1 (de) 2016-12-29 2017-11-16 Hydraulikblock für ein hydraulikaggregat einer bremsregelung einer hydraulischen fahrzeugbremsanlage

Publications (1)

Publication Number Publication Date
EP3562717A1 true EP3562717A1 (de) 2019-11-06

Family

ID=60331618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17798214.7A Withdrawn EP3562717A1 (de) 2016-12-29 2017-11-16 Hydraulikblock für ein hydraulikaggregat einer bremsregelung einer hydraulischen fahrzeugbremsanlage

Country Status (8)

Country Link
US (1) US10814848B2 (ja)
EP (1) EP3562717A1 (ja)
JP (1) JP6833046B2 (ja)
KR (1) KR102460742B1 (ja)
CN (1) CN110114252B (ja)
DE (1) DE102016226304A1 (ja)
GB (1) GB2571886A (ja)
WO (1) WO2018121913A1 (ja)

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Also Published As

Publication number Publication date
GB2571886A (en) 2019-09-11
WO2018121913A1 (de) 2018-07-05
JP2020501984A (ja) 2020-01-23
US20190337500A1 (en) 2019-11-07
KR102460742B1 (ko) 2022-10-31
CN110114252B (zh) 2022-04-15
JP6833046B2 (ja) 2021-02-24
GB201909117D0 (en) 2019-08-07
US10814848B2 (en) 2020-10-27
KR20190104144A (ko) 2019-09-06
DE102016226304A1 (de) 2018-07-05
CN110114252A (zh) 2019-08-09

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