EP0484685A1 - Vérin - Google Patents

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Publication number
EP0484685A1
EP0484685A1 EP91117187A EP91117187A EP0484685A1 EP 0484685 A1 EP0484685 A1 EP 0484685A1 EP 91117187 A EP91117187 A EP 91117187A EP 91117187 A EP91117187 A EP 91117187A EP 0484685 A1 EP0484685 A1 EP 0484685A1
Authority
EP
European Patent Office
Prior art keywords
switch
holder
cylinder
housing
holding part
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
EP91117187A
Other languages
German (de)
English (en)
Other versions
EP0484685B1 (fr
Inventor
Guenter Mayer
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 EP0484685A1 publication Critical patent/EP0484685A1/fr
Application granted granted Critical
Publication of EP0484685B1 publication Critical patent/EP0484685B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means

Definitions

  • the invention relates to a cylinder according to the preamble of the main claim. It is known from US Pat. No. 3,639,868 to arrange an additional guide rail on the outer wall of the cylinder housing parallel to the axis of the cylinder. An extension of a holding part for an actuation switch of the cylinder engages in this guide rail.
  • This holding device also has an arm which extends up to close to the outer wall of the cylinder housing. At the end of this arm a hole is formed in which a reed switch is used as an actuation switch.
  • This type of attachment has the disadvantage that the housing of the reed switch must be precisely matched to the bore of the arm. The reed switch can only be used for this special solution. It cannot be used for any other cylinder, especially for other types of cylinders such as short-stroke cylinders, small cylinders or tie rod cylinders.
  • the cylinder according to the invention with the characterizing features of the main claim has the advantage that a relatively small cylinder switch can be used for almost all types of cylinders. Only the relatively cheap and easy to manufacture bracket can be adapted to the specific circumstances of the cylinder types.
  • a cylinder housing which is square or rectangular in cross section is usually used, so that the switch and switch provided in the axial direction one behind the other can be used to fasten the switch as optimally as possible in the region of the piston of the cylinder. If possible, the switch should only have the width of the groove, so that it can be guided in the groove and this is also an adjustment of the switch relative to the holder.
  • the measures listed in the subclaims allow advantageous developments of the cylinder specified in the main claim.
  • FIG. 1 shows a longitudinal section through a working cylinder and the holder
  • FIG. 2 shows a side view of the switch and the holder
  • FIG. 2a shows a front view of the switch
  • FIG. 3 shows a modification of the holder
  • FIG. 4 shows a side view of the switch and the holder according to FIG. 3.
  • 10 denotes the housing of a working cylinder 11, in the cylinder bore 12 of which a piston (not shown) is guided.
  • the housing 10 has a square or rectangular cross section.
  • bores 14 are formed in the direction of the cylinder bore 12 for receiving fastening means in order to be able to attach the housing 10 to a device, for example.
  • a longitudinal groove 15 serving as a type of guide rail is formed, which has an approximately dovetail-like design in cross section.
  • the longitudinal grooves 15 are arranged as centrally as possible in the region of the longitudinal axis of the cylinder bore 12.
  • a holding part 16 is inserted into one of the longitudinal grooves 15 and has a dovetail-like foot 17 corresponding to the shape of the longitudinal groove. Furthermore, there are two bores 18 running in the holding part 16 in the direction of the longitudinal groove 15.
  • the holding part 16 also has an extension 20 which is formed transversely to the bores 18 and has a bore 21 running towards the housing 10. In the bore 21 there is a screw 22 with which the holding part 16 can be fixed to the housing 10.
  • a switch 24 is also arranged in the longitudinal groove 15 and is used to determine the position of the piston of the cylinder 11. All types, such as reed switches or Hall elements, can be used as switches 24.
  • the width of the switch 24 should correspond to the width of the opening of the longitudinal groove 15 in order to allow adjustment of the switch 24 in the longitudinal groove 15.
  • a short pin 25 is formed which projects into one of the bores 18. This pin 25 is only present to enable any use of the switch 24 even in housings without longitudinal grooves.
  • a blind bore 26 with a cut thread is formed in the end face of the switch 24.
  • the holding part 16 is inserted with the foot 17 into one of the longitudinal grooves 15 and fixed with the screw 22 in the region of the point where the position of the piston is to be determined with the help of the switch 24.
  • the switch 24 is inserted into the longitudinal groove 15 so that the pin 25 protrudes into one of the bores 18.
  • a screw 27 which projects into the other bore 18 of the holding part 16 and into the blind hole 26 of the switch 24
  • the switch 24 is fastened to the holding part 16 and thus indirectly to the housing 10.
  • the holding part 16a has a slot 30 intersecting the bores 18.
  • the slot 30 is spread when the screw 31 is screwed in, so that the dovetail-like extensions of the foot 17a tilt in the longitudinal groove 15.
  • a groove 32 is formed in the underside of the foot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP91117187A 1990-11-09 1991-10-09 Vérin Expired - Lifetime EP0484685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4035627A DE4035627A1 (de) 1990-11-09 1990-11-09 Arbeitszylinder
DE4035627 1990-11-09

Publications (2)

Publication Number Publication Date
EP0484685A1 true EP0484685A1 (fr) 1992-05-13
EP0484685B1 EP0484685B1 (fr) 1995-06-28

Family

ID=6417927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91117187A Expired - Lifetime EP0484685B1 (fr) 1990-11-09 1991-10-09 Vérin

Country Status (2)

Country Link
EP (1) EP0484685B1 (fr)
DE (2) DE4035627A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870932A1 (fr) * 1997-04-08 1998-10-14 Hygrama Ag Cylindre hydraulique ou pneumatique
EP0846874A3 (fr) * 1996-11-25 2000-01-12 Robert Bosch Gmbh Commutateur de cylindre

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207971A1 (de) * 1992-03-13 1993-09-16 Numatics Gmbh Steuerzylinder fuer pneumatische steuergeraete mit signalkontakten
DE4234332A1 (de) * 1992-10-12 1994-04-14 Heidelberger Druckmasch Ag Aufspannvorrichtung zum Befestigen einer biegsamen Druckform auf der Mantelfläche eines Zylinders
DE4241189A1 (de) * 1992-12-03 1994-06-09 Mannesmann Ag Einrichtung zur Positionsermittlung bei einem druckmittelbetriebenen Arbeitszylinder
DE19953186A1 (de) * 1999-11-05 2001-02-01 Bosch Gmbh Robert Zylinderschalter
DE102005004908B4 (de) * 2005-02-02 2011-03-17 Ifm Electronic Gmbh Anschlagselement zur axialen Begrenzung der Position eines Sensors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507167A1 (de) * 1985-03-01 1986-09-04 Festo KG, 7300 Esslingen Kolben-zylinder-anordnung
GB2180914A (en) * 1985-09-24 1987-04-08 Festo Kg Piston/cylinder assembly
DE8628149U1 (fr) * 1986-10-22 1987-11-05 Festo Kg, 7300 Esslingen, De

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639868A (en) * 1971-03-17 1972-02-01 Bimba Mfg Co Magnetic switch mounting means for a fluid motor unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507167A1 (de) * 1985-03-01 1986-09-04 Festo KG, 7300 Esslingen Kolben-zylinder-anordnung
GB2180914A (en) * 1985-09-24 1987-04-08 Festo Kg Piston/cylinder assembly
DE8628149U1 (fr) * 1986-10-22 1987-11-05 Festo Kg, 7300 Esslingen, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846874A3 (fr) * 1996-11-25 2000-01-12 Robert Bosch Gmbh Commutateur de cylindre
EP0870932A1 (fr) * 1997-04-08 1998-10-14 Hygrama Ag Cylindre hydraulique ou pneumatique

Also Published As

Publication number Publication date
DE4035627A1 (de) 1992-05-14
EP0484685B1 (fr) 1995-06-28
DE59105856D1 (de) 1995-08-03

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