EP0508973A1 - Zylinder-Kolben-Stelleinrichtung - Google Patents

Zylinder-Kolben-Stelleinrichtung Download PDF

Info

Publication number
EP0508973A1
EP0508973A1 EP92850083A EP92850083A EP0508973A1 EP 0508973 A1 EP0508973 A1 EP 0508973A1 EP 92850083 A EP92850083 A EP 92850083A EP 92850083 A EP92850083 A EP 92850083A EP 0508973 A1 EP0508973 A1 EP 0508973A1
Authority
EP
European Patent Office
Prior art keywords
cylinder tube
end wall
cylinder
piston
grooves
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
EP92850083A
Other languages
English (en)
French (fr)
Other versions
EP0508973B2 (de
EP0508973B1 (de
Inventor
Folke Lennart Röllgardh
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.)
Parker Hannifin AB
Original Assignee
ATLAS COPCO AUTOMATION AB
Parker Pneumatic AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20382429&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0508973(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ATLAS COPCO AUTOMATION AB, Parker Pneumatic AB filed Critical ATLAS COPCO AUTOMATION AB
Publication of EP0508973A1 publication Critical patent/EP0508973A1/de
Application granted granted Critical
Publication of EP0508973B1 publication Critical patent/EP0508973B1/de
Publication of EP0508973B2 publication Critical patent/EP0508973B2/de
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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies

Definitions

  • the main object of the invention is to create a piston-cylinder type actuator and an end wall mounting method for the same by which the end wall and cylinder tube design as well as the assembly work is substantially simplified and, thereby, less costly.
  • Fig 1 shows a longitudinal section through a piston-cylinder type actuator according to the invention.
  • Figs 2a-c illustrate in three steps the end wall mounting method according to the invention.
  • Fig 3 shows the completed end wall mounting carried through as illustrated in Figs 2a-c.
  • Fig 4 shows an enlarged fraction of Fig 3.
  • Fig. 5 shows an end view of the device in Fig 3.
  • the actuator shown in Fig 1 comprises a cylinder tube 10 with pressure medium communication ports 11, 12 and two end walls 13, 14.
  • One of the end walls 14 has a central opening 16 through which a piston rod 17 extends.
  • the latter has a threaded bore 18 at its outer end for connection to an external load and a threaded inner portion 19 by which a piston 20 is rigidly attached.
  • the piston 20 carries both a seal ring 22 and guide elements 23 for contact with the cylindrical inner surface 24 of the cylinder tube 10.
  • a seal ring 25 is mounted in the end wall opening 16 to sealingly cooperate with the piston rod 17.
  • a coil spring 27 is inserted between the front end wall 14 and the piston 20 to exert a bias load on the latter towards the rear end wall 13.
  • the end walls 13, 14 are formed with circumferential grooves 28 and 29, respectively, for supporting seal rings 30, 31.
  • the end walls 13, 14 are also formed with circumferential mounting grooves 33, 34, which are engaged by lock lugs 35, 36 extending radially inwardly from the inner surface 24 of the cylinder tube 10.
  • the lugs 35, 36 which extend throughout the inner circumference of the cylinder tube 10, are formed by plastic deformation of the latter and form together with the grooves 33, 34 a rigid and permanent mounting means for the end walls 13, 14. Thereby, the flat end surfaces 37, 38 of the end walls 13, 14 are flush with the end surfaces of the cylinder tube 10.
  • the end wall mounting is carried out by means of a mounting tool 40 which serves both as an end wall guiding and introduction means and as a cylinder tube upsetting pressing tool.
  • the tool 40 is formed with a flat front surface 41 and an annular ridge 42 of substantially rectangular cross section and protruding in front of the front surface 41.
  • This ridge 42 has an inner diameter to fit the outside surface 37 of the end wall 13, and the axial extent of the ridge 42 is equal to the distance between the outer end surface 37 of the end wall 13 and the mounting groove 33.
  • the width of the ridge 42 is chosen so as to generate a lug 35 of a correct size to match the groove 33 when pressed against and into the end surface of the cylinder tube 10.
  • the deformation ridge 42 engages the end surface portion 43 of the cylinder tube 10 located at the inner circumference of the latter. See Fig 2b.
  • the embodiments of the invention are not limited to the above described example which includes the formation of a single annular lock lug 35 extending over the entire circumference of the cylinder tube 10.
  • the lock means may comprise a number of shorter lugs distributed over the circumference of the cylinder tube 10, and the mounting groove 33 may as well be replaced by a number of shorter grooves to match the lugs.
  • the mounting tool 40 is formed with a number of short ridge portions for producing such lugs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP19920850083 1991-04-11 1992-04-10 Zylinder-Kolben-Stelleinrichtung Expired - Lifetime EP0508973B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9101083 1991-04-11
SE9101083A SE468326B (sv) 1991-04-11 1991-04-11 Kolv- cylinderanordning

Publications (3)

Publication Number Publication Date
EP0508973A1 true EP0508973A1 (de) 1992-10-14
EP0508973B1 EP0508973B1 (de) 1996-07-17
EP0508973B2 EP0508973B2 (de) 1999-09-22

Family

ID=20382429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920850083 Expired - Lifetime EP0508973B2 (de) 1991-04-11 1992-04-10 Zylinder-Kolben-Stelleinrichtung

Country Status (3)

Country Link
EP (1) EP0508973B2 (de)
DE (1) DE69212197T3 (de)
SE (1) SE468326B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414583A1 (de) * 1994-04-27 1995-11-02 Teves Gmbh Alfred Ventil
DE4433649A1 (de) * 1994-09-21 1995-11-02 Fichtel & Sachs Ag Verfahren zur Montage eines Kolben-Zylinderaggregats
DE19537038A1 (de) * 1995-10-05 1997-04-10 Stephan Thies Geberzylinder
DE19603384A1 (de) * 1996-01-31 1997-08-07 Teves Gmbh Alfred Befestigungsvorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4246631B2 (ja) 2001-08-29 2009-04-02 ボッシュ レックスロート アクチエンゲゼルシャフト 油圧シリンダ
DE10152414B4 (de) * 2001-08-29 2013-01-17 Bosch Rexroth Aktiengesellschaft Hydraulikzylinder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487512A (en) * 1946-01-10 1949-11-08 Automotive & Aircraft Hydrauli Cylinder and cylinder head construction
CH501168A (de) * 1969-08-05 1970-12-31 Bosch Gmbh Robert Druckluftarbeitszylinder für Druckmittelanlagen
DE2115053A1 (de) * 1971-03-29 1972-10-05 Knapp Mikrohydraulik Gmbh Hydraulik oder Pneumatikzylinder
DE4002558A1 (de) * 1989-02-22 1990-08-23 Knapp Mikrohydraulik Gmbh Hydraulikzylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487512A (en) * 1946-01-10 1949-11-08 Automotive & Aircraft Hydrauli Cylinder and cylinder head construction
CH501168A (de) * 1969-08-05 1970-12-31 Bosch Gmbh Robert Druckluftarbeitszylinder für Druckmittelanlagen
DE2115053A1 (de) * 1971-03-29 1972-10-05 Knapp Mikrohydraulik Gmbh Hydraulik oder Pneumatikzylinder
DE4002558A1 (de) * 1989-02-22 1990-08-23 Knapp Mikrohydraulik Gmbh Hydraulikzylinder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 267 (M-182)(1145) 25 December 1982 & JP-A-57 157 863 ( SHIYOUWA ) 29 September 1982 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414583A1 (de) * 1994-04-27 1995-11-02 Teves Gmbh Alfred Ventil
DE4433649A1 (de) * 1994-09-21 1995-11-02 Fichtel & Sachs Ag Verfahren zur Montage eines Kolben-Zylinderaggregats
DE19537038A1 (de) * 1995-10-05 1997-04-10 Stephan Thies Geberzylinder
DE19537038B4 (de) * 1995-10-05 2006-05-24 Stephan Thies Geberzylinder
DE19603384A1 (de) * 1996-01-31 1997-08-07 Teves Gmbh Alfred Befestigungsvorrichtung

Also Published As

Publication number Publication date
SE468326B (sv) 1992-12-14
DE69212197T2 (de) 1997-03-06
DE69212197D1 (de) 1996-08-22
EP0508973B2 (de) 1999-09-22
SE9101083D0 (sv) 1991-04-11
DE69212197T3 (de) 2000-05-25
EP0508973B1 (de) 1996-07-17
SE9101083L (sv) 1992-10-12

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