WO2001026946A1 - Procede pour regler un entrefer residuel d'une electrovanne - Google Patents

Procede pour regler un entrefer residuel d'une electrovanne Download PDF

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Publication number
WO2001026946A1
WO2001026946A1 PCT/DE2000/003542 DE0003542W WO0126946A1 WO 2001026946 A1 WO2001026946 A1 WO 2001026946A1 DE 0003542 W DE0003542 W DE 0003542W WO 0126946 A1 WO0126946 A1 WO 0126946A1
Authority
WO
WIPO (PCT)
Prior art keywords
air gap
residual air
armature
solenoid valve
pole piece
Prior art date
Application number
PCT/DE2000/003542
Other languages
German (de)
English (en)
Inventor
Dieter Kawa
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
Priority to EP00982981A priority Critical patent/EP1224103A1/fr
Priority to JP2001529980A priority patent/JP2003515063A/ja
Publication of WO2001026946A1 publication Critical patent/WO2001026946A1/fr

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
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/025—Electrically controlled valves
    • B60T15/028—Electrically controlled valves in hydraulic systems
    • 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
    • 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
    • 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
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F16K31/0693—Pressure equilibration of the armature

Definitions

  • the invention relates to a method for setting a residual air gap between an armature and an armature stop of a solenoid valve, which is intended in particular for use in a vehicle brake system having a slip control device, with the features of the preamble of claim 1.
  • Such a solenoid valve is known from DE 197 16 856 A1.
  • the known solenoid valve has a hollow cylindrical pole piece, a hollow cylindrical armature, which is arranged coaxially to the pole piece and can be displaced axially to it, and a plunger which slidably passes through the pole piece and which is received in the armature and moves with the armature.
  • a valve closing body With the plunger, a valve closing body can be pressed against a valve seat for closing the solenoid valve and can be lifted off the valve seat for opening.
  • the armature is pulled in the direction of the pole piece and the plunger is axially displaced.
  • the tappet of the known solenoid valve has a flange and a sleeve is inserted into the armature, against which the tappet with its flange is pressed by a spring.
  • the known solenoid valve is partially assembled so that the plunger and the armature are still accessible and the solenoid valve is brought into the end position in which the armature is displaced in the direction of the pole piece forming the armature stop.
  • the armature is moved so far that the desired residual gap between the armature and the pole piece remains.
  • the sleeve inserted into the armature, against which the tappet with its flange rests is displaced and, after the residual air gap has been set, is fixed in the armature by a radial stamping of the armature, as a result of which the residual air gap is set.
  • the solenoid valve is assembled. This type of adjustment of the residual air gap is complex and requires as an additional component the sleeve inserted into the armature and a spring which presses the tappet with its flange against the sleeve.
  • the solenoid valve is partially assembled, the armature with the plunger or the plunger is brought into the end position in which the residual air gap should exist between the armature and the armature stop and it then becomes one Length of the ram determining the residual air gap is brought to the required dimension.
  • the length of the tappet which determines the residual air gap can be its total length or, for example, also the length from a valve closing body attached to the tappet to an axial stop of the tappet for the armature. Partial assembly means that those parts of the solenoid valve that determine the residual air gap, for example the tappet, the pole piece and a valve seat part, are put together become.
  • the partial assembly can be carried out provisionally for setting the residual air gap, after which the parts of the solenoid valve are taken apart again and the solenoid valve is then assembled or only later.
  • the partial assembly can also be part of the final and complete assembly of the solenoid valve, ie the solenoid valve is partially assembled, then the residual air gap is set in accordance with the method according to the invention and the assembly of the solenoid valve is then completed.
  • the anchor it is not always necessary for the anchor to be attached to the tappet. If, for example, the tappet has an axial stop for the armature, its axial distance from a valve closing body attached to the tappet, as the length of the tappet which determines the residual air gap, can be brought to the required level without the armature being attached to the tappet.
  • the method according to the invention has the advantage that it enables the setting of the residual air gap of the solenoid valve in a simple and quick manner, so that short cycle times are possible in series production.
  • the method according to the invention is suitable for automation and can in particular be integrated as a work step in the assembly of the solenoid valve.
  • Another advantage of the method according to the invention is its small tolerance of the residual air gap.
  • a small tolerance of the residual air gap is a prerequisite for the same opening and closing behavior of several solenoid valves, which in turn is a prerequisite for a high control quality of a slip control of a vehicle brake system.
  • the length of the tappet which determines the residual air gap of the solenoid valve is brought to the required level by a forming process such as hot forming, hot stamping or ultrasonic processing. It is advantageous for the reshaping if the ram consists of a plastic (claim 4), in particular of a thermoplastic (claim 5), so that the ram can be softened and deformed by heating, even by local heating.
  • machining of the plunger is provided in order to bring the length of the plunger, which determines the residual air gap of the solenoid valve, to the required level.
  • FIG. 1 shows a solenoid valve for explaining the method according to the invention in axial section
  • Fig. 2 shows the solenoid valve of Fig. 1 in a partially assembled state.
  • the solenoid valve 10 shown in FIG. 1 is designed as a solenoid valve 10 which is open in its de-energized basic position.
  • the solenoid valve 10 is shown in its closed, energized switching position.
  • the solenoid valve 10 is intended for use as an inlet or pressure build-up valve in a hydraulic vehicle brake system having a slip control device, where it is hydraulically connected upstream of a wheel brake cylinder.
  • the solenoid valve 10 has a hollow cylindrical pole piece 12, in which a plunger 14 is received in an axially displaceable manner.
  • the plunger 14 consists of a plastic, in particular a thermoplastic.
  • An anchor 18 lies loosely on an end face 20 of the plunger 14.
  • valve closing body 24 interacts with a conical valve seat 26 of a hollow cylindrical valve seat part 28, which is pressed into an end of the pole piece 12 facing away from the armature 18 by a predetermined insertion depth.
  • a valve opening spring 30 designed as a helical compression spring is placed on the tapered end 22 of the plunger 14, it is supported on the valve seat part 28 and presses the plunger 14 away from the valve seat part 28 and thus the armature 18 placed on the plunger 14 away from the poison piece 12.
  • an approximately cylindrical component 32 made of plastic in its basic shape, which has a central hole 34 for fluid outlet or inlet of the solenoid valve 10.
  • the component 32 has a check valve 36 which is hydraulically connected in parallel with the solenoid valve 10.
  • the component 32 has a cylinder groove 38 with which it is placed on the end of the valve seat part 28 protruding from the pole piece 12.
  • a thin-walled valve dome 40 is placed on the end of the pole piece 12 facing the armature 18 and is hemispherically closed at its end facing away from the pole piece 12.
  • the armature 18 is axially displaceably received in the valve dome 40.
  • the valve dome 40 is connected gas-tight to the pole piece 12 by a circumferential weld 42.
  • the valve dome 40 forms with its closed end an armature stop that limits an opening stroke of the solenoid valve 10.
  • the solenoid valve 10 is inserted over approximately half the length of its pole piece 12 into a bore 44 in a hydraulic block 46, which is part of a vehicle brake system (not shown) that has a slip control device.
  • a hydraulic block 46 which is part of a vehicle brake system (not shown) that has a slip control device.
  • the pole piece 12 has a flange 48 integral with it, which is located approximately in the longitudinal center of the pole piece 12 and on which the solenoid valve 12 is held in its bore 44 in a fluid-tight and pressure-resistant manner by circumferential caulking 50 of the hydraulic block 46.
  • a coil 52 which lies in a cup-shaped yoke 54, is placed on the valve dome 40 protruding from the hydraulic block 46.
  • a yoke-shaped yoke base 56 is pressed, with which the yoke 54, including the coil 52 therein, is pressed onto the pole piece 12 after the solenoid valve 10 has been inserted into the bore 44 of the hydraulic block 46 and through the circumferential caulking 50 has been fastened there.
  • the solenoid valve 10 is initially partially assembled to such an extent that the tappet 14 is still accessible.
  • the valve seat part 28 is pressed into the pole piece 12 by the predetermined insertion depth and the component 32 having the check valve 36 is placed on the end of the valve seat part 28 protruding from the pole piece 12.
  • the valve opening spring 30 is placed on the tapered end 22 of the plunger 14 and the plunger 14 is inserted into the pole piece 12.
  • FIG. 2 This partially assembled state of the solenoid valve 10 is shown in FIG. 2.
  • a residual air gap a (FIG. 1) is set between the armature 18, which has not yet been installed in the illustrated and described exemplary embodiment, and the pole piece 12, which forms an armature stop.
  • the residual air gap a is shown exaggeratedly thick in the drawing, it usually has a thickness in the range of 0.05-0.1 mm.
  • a sonotrode 58 is placed on the end face 20 of the tappet 14 and the tappet 14 is pressed with the valve closing body 24 against the valve seat 26, as shown in FIG. 2.
  • the sonotrode 58 is placed on the plunger 14, which rests with its end face on the end face 20 of the plunger 14, which forms an axial stop for the armature 18.
  • the sonotrode 58 has a countersink 60, with the bottom of which it rests on the end face 20 of the plunger 14.
  • the countersink 60 has a depth corresponding to the residual air gap a to be set.
  • the sonotrode 58 is excited to produce ultrasonic torsional vibrations and the plunger 14 is thereby reshaped in the region of the end face 20 in a manner similar to a compression.
  • the end face 20 of the tappet 14 is displaced in the direction of the valve closing body 24 pressed into it until the sonotrode 58 rests on an annular end face of the piece 12 with an annular edge 62 surrounding its countersink 60.
  • the plunger 14 protrudes from the pole piece 12 by the depth of the countersink 60 of the sonotrode 58, the depth of the countersink 60 determines the dimension of the desired residual air gap a.
  • the tappet 14 is provided with a chamfer 60 at the transition to the end face 20. Machining the end face 20 without cutting has the advantage over machining, which is also possible, that no chips are produced which would have to be removed in order to ensure that the solenoid valve 10 functions correctly.
  • the sonotrode 58 is removed, the armature 18 is placed on the tappet 14 and the valve dome 40 is pushed onto the pole piece 12 and welded to it.
  • the solenoid valve 10 can now in the Bore 44 of the hydraulic block 46 is inserted and fixed pressure-tight in the bore 44 by attaching the caulking 50.
  • the yoke 54 with the inserted coil 52 is pushed onto the valve dome 40 and pressed onto the pole piece 12 with the yoke bottom 56.

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

Abstract

Selon l'invention, pour le réglage d'un entrefer résiduel (a) entre un induit (18) et une pièce polaire (12) d'une électrovanne (10), il est proposé que ladite électrovanne (10) soit partiellement assemblée jusqu'à un stade auquel un poussoir (14) est encore accessible. Ledit poussoir (14) est, pour prendre sa position de fermeture, pressé contre un siège de soupape (26) et une butée axiale (20) de ce poussoir (14) est déformée, par exemple par ultrasons au moyen d'une sonotrode (58), jusqu'à ce que la butée (20) dépasse de la pièce polaire (12) d'une longueur correspondant à l'entrefer résiduel souhaité.
PCT/DE2000/003542 1999-10-13 2000-10-10 Procede pour regler un entrefer residuel d'une electrovanne WO2001026946A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00982981A EP1224103A1 (fr) 1999-10-13 2000-10-10 Procede pour regler un entrefer residuel d'une electrovanne
JP2001529980A JP2003515063A (ja) 1999-10-13 2000-10-10 電磁弁の残留ギャップの調節法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19949222A DE19949222A1 (de) 1999-10-13 1999-10-13 Verfahren zur Einstellung eines Restluftspalts eines Magnetventils
DE19949222.0 1999-10-13

Publications (1)

Publication Number Publication Date
WO2001026946A1 true WO2001026946A1 (fr) 2001-04-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/003542 WO2001026946A1 (fr) 1999-10-13 2000-10-10 Procede pour regler un entrefer residuel d'une electrovanne

Country Status (4)

Country Link
EP (1) EP1224103A1 (fr)
JP (1) JP2003515063A (fr)
DE (1) DE19949222A1 (fr)
WO (1) WO2001026946A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007085315A1 (fr) * 2006-01-25 2007-08-02 Robert Bosch Gmbh Soupape magnétique
DE102012009634A1 (de) * 2012-05-14 2013-11-14 Lucas Automotive Gmbh Elektromagnet-Ventil für ein Kraftfahrzeug und Herstellungsverfahren hierfür

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951665B4 (de) * 1999-10-26 2010-01-14 Continental Teves Ag & Co. Ohg Elektromagnetventil, insbesondere für hydraulische Bremsanlagen mit Schlupfregelung
JP2004340325A (ja) * 2003-05-19 2004-12-02 Hitachi Unisia Automotive Ltd 電磁弁
DE102005048742B4 (de) * 2005-10-10 2009-04-09 Zf Friedrichshafen Ag Selbstpumpendes hydropneumatisches Federbein mit innerer Niveauregelung
CN103823195A (zh) * 2013-11-26 2014-05-28 浙江大学 微型电磁阀用电磁铁测试件工作气隙调整装置
DE102016208414A1 (de) 2016-05-17 2017-11-23 Robert Bosch Gmbh Ventilpatrone für ein Magnetventil und zugehöriges Magnetventil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030971A1 (de) * 1990-10-01 1992-04-02 Bosch Gmbh Robert Elektromagnetbetaetigtes ventil
US5605386A (en) * 1994-07-28 1997-02-25 Robert Bosch Gmbh Solenoid valve for slip-controlled hydraulic brake systems in motor vehicles
DE19716856A1 (de) 1997-04-22 1998-10-29 Itt Mfg Enterprises Inc Baueinheit für ein Hydraulikventil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030971A1 (de) * 1990-10-01 1992-04-02 Bosch Gmbh Robert Elektromagnetbetaetigtes ventil
US5605386A (en) * 1994-07-28 1997-02-25 Robert Bosch Gmbh Solenoid valve for slip-controlled hydraulic brake systems in motor vehicles
DE19716856A1 (de) 1997-04-22 1998-10-29 Itt Mfg Enterprises Inc Baueinheit für ein Hydraulikventil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007085315A1 (fr) * 2006-01-25 2007-08-02 Robert Bosch Gmbh Soupape magnétique
US8123193B2 (en) 2006-01-25 2012-02-28 Robert Bosch Gmbh Magnetic valve
DE102012009634A1 (de) * 2012-05-14 2013-11-14 Lucas Automotive Gmbh Elektromagnet-Ventil für ein Kraftfahrzeug und Herstellungsverfahren hierfür

Also Published As

Publication number Publication date
JP2003515063A (ja) 2003-04-22
EP1224103A1 (fr) 2002-07-24
DE19949222A1 (de) 2001-04-19

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