EP0278227A2 - Dispositif d'actionnement pour soupape hydraulique proportionnelle, à commande électrique - Google Patents

Dispositif d'actionnement pour soupape hydraulique proportionnelle, à commande électrique Download PDF

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Publication number
EP0278227A2
EP0278227A2 EP19880100238 EP88100238A EP0278227A2 EP 0278227 A2 EP0278227 A2 EP 0278227A2 EP 19880100238 EP19880100238 EP 19880100238 EP 88100238 A EP88100238 A EP 88100238A EP 0278227 A2 EP0278227 A2 EP 0278227A2
Authority
EP
European Patent Office
Prior art keywords
housing
section
actuating device
larger diameter
hollow bore
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.)
Granted
Application number
EP19880100238
Other languages
German (de)
English (en)
Other versions
EP0278227B1 (fr
EP0278227A3 (en
Inventor
Volkmar Dipl.-Ing. Leutner
Hermann Sanzenbacher
Roland Schempp
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 EP0278227A2 publication Critical patent/EP0278227A2/fr
Publication of EP0278227A3 publication Critical patent/EP0278227A3/de
Application granted granted Critical
Publication of EP0278227B1 publication Critical patent/EP0278227B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1684—Armature position measurement using coils

Definitions

  • the invention relates to an actuator for a hydraulic, electrically controllable proportional valve according to the preamble of the main claim.
  • an actuating device is already known from DE-AS 29 20 670, which has a common housing for a proportional magnet and a displacement sensor. A hollow bore is provided in the housing from one end face to the other end face, which is offset several times in such a way that its section lies with the greatest internal width on the valve-side end face.
  • This actuating device has the disadvantage that all components of the permanent magnet and the displacement transducer, which are designed here in a so-called wet design, are mounted in the housing from the valve-side end.
  • the pressure pipe arranged in the hollow bore is designed in one piece, individual components of the pressure pipe being plugged together being sealed with the aid of O-rings.
  • the for Actuating device provided electronics unit is mounted in the longitudinal direction on the end of the housing facing away from the valve. This not only leads to a relatively large axial overall length, but also to a small amount of space for arranging the electronic unit and also to relatively long cable connections due to the relatively small end face. Furthermore, means for adjusting the displacement sensor are also missing in this actuating device.
  • the actuating device according to the invention for a hydraulic, electrically controllable proportional valve with the characterizing features of the main claim has the advantage that it results in a compact and easy to manufacture unit.
  • the actuating device is also easy to install, since the individual components of the proportional magnet and the displacement sensor are installed in the housing from opposite end faces. Thanks to the one-piece pressure tube, the sealing problems can be easily mastered even with wet construction and the center offset of the armature of the proportional magnet to the transducer core in the displacement transducer.
  • the actuating device also enables a short axial length and short cable connections to an associated electronics unit.
  • FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
  • the single figure shows a longitudinal section through the actuating device with an attached electronic unit.
  • the actuating device 10 consists essentially of a proportional magnet 11, a displacement transducer 12 and an associated electronics unit 13.
  • the proportional magnet 11 and the displacement transducer 12 are arranged in a common housing 14 made of magnetically conductive material, on its valve-side end face 15 in a manner known per se Proportional valve 16, not shown, is attached.
  • a continuous hollow bore 17 extends in the longitudinal direction from the valve-side end face 15 to an opposite, valve-facing, second end face 18.
  • This hollow bore 17 is stepped several times and forms a first section 19 with a larger diameter, which is open towards the valve-side end face 15 essentially receives a solenoid 21 of the proportional magnet 11.
  • the first section 19 is followed by a second section 22 with a smaller diameter, in which a pressure tube 23 of the actuating device 10 is guided and supported.
  • the second section 22 in the hollow bore 17 merges into a third section 24 with a larger diameter, which is open to the second end face 18.
  • the pressure pipe 23 inserted into the recessed hollow bore 17 consists of several individual parts which are put together other soldered and then processed so that the pressure tube 23 results in an integral structure after its processing.
  • the one-piece pressure tube 23 essentially consists of an anchor tube 25, which forms a longitudinal section with a larger diameter, and a transducer tube 26, which is firmly connected thereto, and which forms a second longitudinal section, which adjoins the first longitudinal section, and has a smaller diameter.
  • an annular flange 27 is fastened, with which the pressure tube 23 is guided in the first section 19 of the housing 14.
  • At the other end of the anchor tube 25 there is a reinforced inner collar 28, in which the receiver tube 26 is brazed with its open end.
  • the pressure tube 23 is mounted with its first longitudinal section 25 in the second section 22 with a smaller diameter of the hollow bore 17 and protrudes somewhat into the third section 24, so that the inner collar 28 comes to lie at a distance from the second section 22 with a smaller diameter.
  • the pressure tube 23 thus projects freely into the third section 24 with its pick-up tube 26.
  • an armature 31 of the proportional magnet 11 is guided so that it can move longitudinally in its internal displacement 29.
  • the armature 31 is rigidly connected to a transducer core 33, which is guided in the transducer tube 26, via a mechanical coupling member 32.
  • the movement of the armature 31 is transmitted to the outside or to the proportional valve 16 via a lifting rod 34 which penetrates a magnetic core 35.
  • a helical spring 36 supported on the inner collar 28 presses the armature 31 with little force in the direction of the end face 15 on the valve side.
  • the measuring coils 37 of the displacement transducer 12 are guided to be longitudinally displaceable with the aid of an associated coil carrier 38 made of plastic.
  • An anti-rotation device 39 of the coil carrier 38 in the housing 14 is achieved with a conventional pin-slot connection.
  • the coil carrier 38 is supported by a Spring 41 on the reinforced inner collar 28 of the pressure tube 23, so that there is an air gap 42 between the measuring coils 37 and the inner collar 28 to shield disturbing lines of magnetic flux.
  • the anchor tube 25 has at its closed end an external thread 43 on which an associated threaded nut 44 is seated, whereby adjustment means are provided for the longitudinal adjustment of the measuring coils 37.
  • the third section 24 of the hollow bore 17 which is open towards the second end face 18 is closed to the outside by a protective cap 45. On the threaded nut 44 there is also a protective disk 46 against magnetic field interference.
  • the housing 14 of the actuating device 10 is essentially square in cross section and forms a flat mounting surface 47 on its upper longitudinal side, which extends between the two end faces 15 and 18. From the first section 19 of the hollow bore 17, two recesses 48, 49 lead into this mounting surface 47, through which the connecting cables of the magnetic coil 21 are passed. Furthermore, a recess 51 leads from the third section 24 of the hollow bore 17 into the mounting surface 47, through which the electrical connection cables are guided by the displacement sensor 12. All recesses 48, 49, 51 in the mounting surface 47 are covered by a hat-shaped housing cover 52, on the inside of which the entire electronics unit 13 is attached. Only the plug connections 53 and 54 for the proportional magnet 11 and the displacement sensor 12 lead to the outside of the housing cover 52.
  • the assembly of the actuating device 10 is particularly simple and time-saving.
  • the pressure tube 23 and the magnet coil 21 can be installed from the valve-side end face 15, while the measuring coils 37 and the anti-rotation device 39 can then be installed from the other, second end face 18.
  • the one-piece pressure tube 23 can be easily sealed off from the proportional valve 16, the displacement 29 of which is filled with pressure medium in the proportional valve 16 in hydraulic connection. Due to the joint machining of the anchor tube 25 and the transducer tube 26, which is firmly connected therewith, there is no center offset, so that the bores leading the anchor 31 and the transducer core 33 lie exactly coaxially with one another.
  • the measuring coils 37 can be adjusted in a simple and easily accessible manner relative to the sensor core 33.
  • the inner collar 28 located at a distance from the second section 22 and the additional air gap 42 prevent magnetic field lines of the proportional magnet 11 from interfering with the inductively operating displacement sensor 12.
  • the actuating device 10 thus enables a compact overall design, particularly in the longitudinal direction.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Servomotors (AREA)
EP88100238A 1987-02-11 1988-01-11 Dispositif d'actionnement pour soupape hydraulique proportionnelle, à commande électrique Expired - Lifetime EP0278227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873704189 DE3704189A1 (de) 1987-02-11 1987-02-11 Stelleinrichtung fuer ein hydraulisches, elektrisch steuerbares proportionalventil
DE3704189 1987-02-11

Publications (3)

Publication Number Publication Date
EP0278227A2 true EP0278227A2 (fr) 1988-08-17
EP0278227A3 EP0278227A3 (en) 1989-12-13
EP0278227B1 EP0278227B1 (fr) 1992-10-21

Family

ID=6320730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100238A Expired - Lifetime EP0278227B1 (fr) 1987-02-11 1988-01-11 Dispositif d'actionnement pour soupape hydraulique proportionnelle, à commande électrique

Country Status (3)

Country Link
EP (1) EP0278227B1 (fr)
JP (1) JP2640484B2 (fr)
DE (2) DE3704189A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262809A (en) * 1991-12-24 1993-06-30 Bosch Gmbh Robert Measuring the mechanical movement of a solenoid valve armature
DE19530935A1 (de) * 1995-08-23 1997-02-27 Rexroth Mannesmann Gmbh Elektrischer Betätigungsmagnet
WO2002091404A1 (fr) * 2001-05-04 2002-11-14 Robert Bosch Gmbh Systeme de regulation electromagnetique
US8138871B2 (en) * 2006-01-17 2012-03-20 Robert Bosch Gmbh Pole tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707587B4 (de) * 1997-02-26 2005-12-22 Robert Bosch Gmbh Elektromagnetische Stelleinrichtung
DE19724076B4 (de) * 1997-06-07 2005-05-04 Robert Bosch Gmbh Elektromagnetische Stelleinrichtung
DE102009058835A1 (de) 2009-12-18 2011-06-22 Robert Bosch GmbH, 70469 Sensorspule

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163782A (en) * 1981-04-01 1982-10-08 Hitachi Constr Mach Co Ltd Solenoid valve
DE3132212A1 (de) * 1981-08-14 1983-03-03 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Magnetventil
DE3241521A1 (de) * 1982-11-10 1984-05-10 Robert Bosch Gmbh, 7000 Stuttgart Proportionalmagnet
JPS60231081A (ja) * 1984-04-30 1985-11-16 Sanmei Denki Kk 電磁弁
DE3506053A1 (de) * 1985-02-21 1986-08-21 Mannesmann Rexroth GmbH, 8770 Lohr Schaltmagnet fuer gleichstrom zum antrieb eines ventilgliedes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54139185U (fr) * 1978-03-17 1979-09-27
JPS57129909A (en) * 1981-01-31 1982-08-12 Robaato W Burandeeji Fluid pressure apparatus
DE3113116A1 (de) * 1981-04-01 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart "verfahren zum stroemungskraftausgleich bei einem flachschieberventil sowie nach diesem verfahren arbeitendes flachschieberventil"
JPS5940612U (ja) * 1982-09-10 1984-03-15 ミサワホ−ム株式会社 止着子用化粧キヤツプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163782A (en) * 1981-04-01 1982-10-08 Hitachi Constr Mach Co Ltd Solenoid valve
DE3132212A1 (de) * 1981-08-14 1983-03-03 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Magnetventil
DE3241521A1 (de) * 1982-11-10 1984-05-10 Robert Bosch Gmbh, 7000 Stuttgart Proportionalmagnet
JPS60231081A (ja) * 1984-04-30 1985-11-16 Sanmei Denki Kk 電磁弁
DE3506053A1 (de) * 1985-02-21 1986-08-21 Mannesmann Rexroth GmbH, 8770 Lohr Schaltmagnet fuer gleichstrom zum antrieb eines ventilgliedes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Band 10, Nr. 96 (M-469)(2153) 12 April 1986, & JP-A-60 231 081 (SANMEI DENKI) 16.11.1985 *
PATENT ABSTRACTS OF JAPAN Band 7, Nr. 5 (M-184)(1150) 11 Januar 1983, & JP-A-57 163 782 (HITACHI KENKI) 08.10.1982 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262809A (en) * 1991-12-24 1993-06-30 Bosch Gmbh Robert Measuring the mechanical movement of a solenoid valve armature
GB2262809B (en) * 1991-12-24 1995-06-07 Bosch Gmbh Robert Device for measuring the mechanical movement of a solenoid valve armature
DE19530935A1 (de) * 1995-08-23 1997-02-27 Rexroth Mannesmann Gmbh Elektrischer Betätigungsmagnet
DE19530935C2 (de) * 1995-08-23 1999-06-17 Mannesmann Rexroth Ag Elektrische Stelleinheit
WO2002091404A1 (fr) * 2001-05-04 2002-11-14 Robert Bosch Gmbh Systeme de regulation electromagnetique
US8138871B2 (en) * 2006-01-17 2012-03-20 Robert Bosch Gmbh Pole tube

Also Published As

Publication number Publication date
DE3704189A1 (de) 1988-08-25
EP0278227B1 (fr) 1992-10-21
EP0278227A3 (en) 1989-12-13
DE3875351D1 (de) 1992-11-26
JPS63199903A (ja) 1988-08-18
JP2640484B2 (ja) 1997-08-13

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