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WO2012038120A1 - Électrovanne et système de freinage muni d'une telle soupape électromagnétique - Google Patents

Électrovanne et système de freinage muni d'une telle soupape électromagnétique Download PDF

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Publication number
WO2012038120A1
WO2012038120A1 PCT/EP2011/062871 EP2011062871W WO2012038120A1 WO 2012038120 A1 WO2012038120 A1 WO 2012038120A1 EP 2011062871 W EP2011062871 W EP 2011062871W WO 2012038120 A1 WO2012038120 A1 WO 2012038120A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure piece
solenoid valve
armature
pole core
free end
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.)
Ceased
Application number
PCT/EP2011/062871
Other languages
German (de)
English (en)
Inventor
Harald Speer
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 WO2012038120A1 publication Critical patent/WO2012038120A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0665—Lift valves with valve member being at least partially ball-shaped

Definitions

  • the invention relates to a solenoid valve, in particular for a hydraulic valve
  • Braking system of a motor vehicle with a valve sleeve, in which a pole core fixed and an armature are arranged axially displaceable, wherein in the armature cooperating with the pole core pressure piece is axially displaceable and biased.
  • solenoid valves and brake systems of the type mentioned are known from the prior art.
  • normally closed solenoid valves which comprise a displaceable armature having a valve tip, which in the de-energized state of the solenoid valve in a
  • the solenoid valve is designed such that in the mounted state, the compression spring between the voltage applied to the pole core pressure piece and the armature is held clamped and thereby urges the valve tip in the valve seat. If the magnetic actuator of the solenoid valve which comprises the armature and the pole core is energized or actuated, so the pole core pulls the armature away from the valve seat, creating a
  • the pole core of the solenoid valve on its side facing the armature end has a conical stop for the pressure piece, in which the pressure piece rests at least partially with a free end. It is therefore intended that the pressure piece cooperates with the conical stop of the pole core. Due to the conical design of the stop for the pressure piece, the stop has seen in longitudinal section oblique side walls which are at an angle to each other or to a central axis, which is advantageously aligned with the axis of the solenoid valve stand.
  • the conical stop is formed as a recess in the armature facing the end face of the pole core, so that the stop opens to the armature. In the thus formed stop penetrates the free end of the pressure piece until it meets the side walls. The frontal opening of the conical stopper is thus
  • skews of the pressure piece which can be generated for example by lateral forces of the pressure spring, are compensated.
  • a skewing of the pressure piece is compensated in a particularly simple and cost-effective manner, wherein the pole core preferably without machining, in particular by a
  • Forming process for example by cold hammering, can be produced.
  • Pressure element itself is preferably in one piece, in particular as an injection molded part or as a cold-formed part. In particular, it is made of reinforced plastic, such as PEEK.
  • the recess need not necessarily be straight. They can also be provided with a convex or concave curvature.
  • the free end of the pressure piece is also formed cone-shaped.
  • the stop is designed as a centering stop, so that when inserting the free end of the pressure piece this is aligned by the stop. In particular, even if the pressure piece at its free
  • the centering of the pressure piece can be realized easily and reliably.
  • the opening angle of the conical receptacle is greater than the opening angle of the conically shaped free end of the pressure piece.
  • the free end of the pressure piece is preferably formed hemispherical or dome-like.
  • the pressure piece thus has at its free end on a curved surface or end face, with the conical
  • the anchor usually has a chamber in which the pressure piece is mounted.
  • the pressure piece is in this
  • Chamber stored at least substantially radially backlash-free, to ensure a long life of the solenoid valve and to prevent disturbing noises.
  • the pressure piece with a circumferential
  • Inner shell surface of the chamber forms a sliding bearing.
  • Coating inner surface cooperating radial web thus ensures the play-free radial bearing of the pressure piece, which allows axial movement of the pressure piece in the chamber. Furthermore, the armature on its side facing the pole core on an opening into the chamber opening through which the free end of the
  • Pressure piece protrudes.
  • a clearance is provided between the pressure piece and the opening, so that the pressure piece is guided in the opening radially with clearance or gap.
  • the at least substantially clearance-free radial guidance is preferably carried out solely by the above
  • Solenoid valve reduces friction, so that less energy to operate the solenoid valve is necessary and the wear occurring is reduced.
  • the radial web forms an axial stop for the compression spring acting on the pressure element with the biasing force.
  • Axial stop or the radial web formed such that it acts centering for the compression spring which is preferably designed as a helical spring.
  • the pressure piece preferably has a frustoconical axial projection, the outer diameter of which essentially corresponds to that of FIG.
  • Inner diameter of the trained as a helical spring compression spring corresponds.
  • the brake system according to the invention is characterized by the design of the solenoid valve, as described above from. This provides a cost effective and reliable braking system for use in
  • the figure shows a simplified longitudinal sectional view of a solenoid valve 1, which is designed as a normally closed solenoid valve.
  • the solenoid valve 1 comprises a valve sleeve 2 which holds a pole core 3 of a magnetic actuator at one end and a valve body 4, which has a valve seat 5, at the other end.
  • the Polkern 3 is held firmly in the valve sleeve 2. This can be done, for example
  • an armature 6 of the magnetic actuator is arranged axially displaceable.
  • the armature 6 has an axial recess 7 which extends through the entire armature 6.
  • a bolt 8 is pressed into the axial recess 7, which is a
  • Valve tip 9 has. On the opposite side of the bolt 8 of the axial recess 7, the axial recess 7 has a tapered portion 10, so that between the tapered portion 10 and the bolt 8, a chamber 1 1 is formed.
  • a pressure piece 12 is arranged axially displaceable, wherein the pressure piece has a free end 13 which protrudes through the opening 14 formed by the tapered portion 10, so that the pressure piece 12 with its free end 13 via the pole core 3 facing end face 15 of the armature 6 protrudes.
  • the opening 14 and the pressure piece 12 are formed such that a clearance is provided between them.
  • the pressure piece 12 further has approximately centrally - seen in the longitudinal direction - a circumferential radial web 16, the outer surface 17 of the shell outer surface 18 of the chamber 1 1 forms a sliding bearing 19.
  • the pressure member 12 is guided axially displaceable in the chamber 11 and mounted radially at least substantially free of play.
  • the radial web 16 and the bolt 8 designed as a helical spring compression spring 20 is held biased.
  • the radial web 16 forms this with one of its annular end faces an axial stop 21.
  • the bolt 8 facing the end of the pressure piece 12 has an axial projection whose outer diameter substantially corresponds to the inner diameter of the coil spring or the compression spring 20, so that the pressure piece 12 guided by the coil spring becomes.
  • the free end 13 of the pressure piece 12 is formed dome-shaped or hemispherical and is applied to the pole core 3.
  • the pole core 3 has for this purpose a conical stop 22 which is formed as a recess.
  • the opening angle of the stopper 22 is selected such that the end-side opening is larger than the free end of the pressure piece 12, so that the free end 13 can penetrate into the recess of the stopper 22.
  • the pressure piece 12 is integrally preferably as an injection molded part, for example made of reinforced
  • the pole core 3 with the conical, the stop 22 forming recess is preferably alone by Ver- and / or forming, for example by cold impact produced. Due to the geometric design of the pressure piece 12 and the armature 6 is only a guide point of the pressure member 12 in the armature 6 and in the chamber 1 1 in the region of the radial web 16 before.
  • a solenoid valve 1 is thus offered, which has a reduced friction and an imbalance compensation of the pressure piece 12, which are inexpensive and easy to produce.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une électrovanne (1), en particulier pour un système de freinage hydraulique d'un véhicule automobile. Ladite électrovanne est équipée d'une enveloppe de vanne (2) comprenant un noyau polaire (3) agencé de manière fixe et un induit (6) agencé de manière à pouvoir se déplacer axialement, un élément de pression (12) coopérant avec le noyau polaire (3) étant maintenu de manière à pouvoir se déplacer axialement et sous précharge dans l'induit (6). Selon l'invention, le noyau polaire (3) comporte, sur sa face frontale (23) tournée vers l'induit (6), une butée conique (22) pour l'élément de pression (12), dans laquelle l'élément de pression (12) vient s'insérer au moins partiellement par une extrémité libre (13). L'invention concerne également un système de freinage pour un véhicule automobile.
PCT/EP2011/062871 2010-09-23 2011-07-27 Électrovanne et système de freinage muni d'une telle soupape électromagnétique Ceased WO2012038120A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010041255 DE102010041255A1 (de) 2010-09-23 2010-09-23 Magnetventil, Bremssystem
DE102010041255.4 2010-09-23

Publications (1)

Publication Number Publication Date
WO2012038120A1 true WO2012038120A1 (fr) 2012-03-29

Family

ID=44534343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/062871 Ceased WO2012038120A1 (fr) 2010-09-23 2011-07-27 Électrovanne et système de freinage muni d'une telle soupape électromagnétique

Country Status (2)

Country Link
DE (1) DE102010041255A1 (fr)
WO (1) WO2012038120A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283903A (en) * 1940-04-29 1942-05-26 Honeywell Regulator Co Valve
US2735644A (en) * 1956-02-21 bishofberger
US2999192A (en) * 1958-06-16 1961-09-05 White Rodgers Company Solenoid actuator and control means therefor
DE6904282U (de) * 1969-02-04 1969-06-04 Pierburg Kg A Elektromagnetventil
US3837618A (en) * 1973-04-26 1974-09-24 Co Des Freins Et Signaux Westi Electro-pneumatic valve
DE3700540A1 (de) * 1987-01-10 1988-07-21 Rexroth Mannesmann Gmbh Elektromagnetbetaetigtes 2/2-wegeventil
EP1911999A1 (fr) * 2006-10-10 2008-04-16 Robert Bosch Gmbh Corps de soupape et soupape magnétique correspondante

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735644A (en) * 1956-02-21 bishofberger
US2283903A (en) * 1940-04-29 1942-05-26 Honeywell Regulator Co Valve
US2999192A (en) * 1958-06-16 1961-09-05 White Rodgers Company Solenoid actuator and control means therefor
DE6904282U (de) * 1969-02-04 1969-06-04 Pierburg Kg A Elektromagnetventil
US3837618A (en) * 1973-04-26 1974-09-24 Co Des Freins Et Signaux Westi Electro-pneumatic valve
DE3700540A1 (de) * 1987-01-10 1988-07-21 Rexroth Mannesmann Gmbh Elektromagnetbetaetigtes 2/2-wegeventil
EP1911999A1 (fr) * 2006-10-10 2008-04-16 Robert Bosch Gmbh Corps de soupape et soupape magnétique correspondante

Also Published As

Publication number Publication date
DE102010041255A1 (de) 2012-03-29

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