EP0969213A2 - Vérin à pression fluidique sans tige - Google Patents

Vérin à pression fluidique sans tige Download PDF

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Publication number
EP0969213A2
EP0969213A2 EP99890130A EP99890130A EP0969213A2 EP 0969213 A2 EP0969213 A2 EP 0969213A2 EP 99890130 A EP99890130 A EP 99890130A EP 99890130 A EP99890130 A EP 99890130A EP 0969213 A2 EP0969213 A2 EP 0969213A2
Authority
EP
European Patent Office
Prior art keywords
holding
longitudinal slot
sealing
edges
strip
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
EP99890130A
Other languages
German (de)
English (en)
Other versions
EP0969213A3 (fr
EP0969213B1 (fr
Inventor
Peter Dipl.-Ing. Rohatschek
Erhard Dr. Ing. Fritz
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.)
Hygrama AG
Original Assignee
Hygrama AG
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 Hygrama AG filed Critical Hygrama AG
Priority to AT99890130T priority Critical patent/ATE269947T1/de
Publication of EP0969213A2 publication Critical patent/EP0969213A2/fr
Publication of EP0969213A3 publication Critical patent/EP0969213A3/fr
Application granted granted Critical
Publication of EP0969213B1 publication Critical patent/EP0969213B1/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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type

Definitions

  • the invention relates to a rodless pressure medium cylinder, with a piston movable longitudinally in a cylinder tube and one on it attacking transmission element protruding through a longitudinal slot in the cylinder tube, as well as with a longitudinal slot on both sides of the piston of sealing tape inside, which is in the area of the transmission element is guided by the piston and one with two elongated Sealing areas in the area of the cylinder-side end of the longitudinal slot interacting sealing strips and at least one on the outside of the Sealing strip arranged holding strips with two themselves with respect to the central plane of the longitudinal slot opposite, essentially elongated and has outwardly facing holding elements.
  • Pressure cylinders of the type mentioned are mostly pneumatically operated and because of the rodless design they are preferred for use in areas found where a small installation length is important.
  • the media force exerted on the piston is determined by the force acting on the piston and transmission element protruding from the longitudinal slot on the side transferred to be driven device. Sealing the both sides of the Piston-lying pressure spaces are achieved on the one hand by sealing rings or the like on the piston and on the other hand through the one that covers the longitudinal slot Sealing tape, which is located in the unpressurized area between the piston seals is passed inside to under the transmission element.
  • the object of the present invention is to achieve the mentioned To avoid disadvantages of the known arrangements and especially one Pressure cylinder of the type mentioned in such a way that a further improvement in holding the sealing tape in the longitudinal slot also in depressurized condition can be ensured with simple means.
  • the Retaining edges are formed on the longitudinal slot of the cylinder tube itself, what On the one hand, the production of what is today mostly extruded from aluminum Cylinder tube and the holding strip of the sealing tape are simplified and on the other hand a relatively easy engagement or disengagement of the sealing tape allows connection in the longitudinal slot.
  • the Holding edges but also on the inside on both sides essentially parallel to the Longitudinal slot provided separate holding grooves of the cylinder tube be what most diverse design options for these connecting elements enables and for example the longitudinal slot for a side Support of the outstanding transmission element leaves free.
  • the holding edges can be Invention but also at least partially on the longitudinal slot from the outside covering outer band can be provided what the cylinder tube profile and its manufacture is simplified since the corresponding measures in the Area of the outer belt are laid.
  • the Retaining edges formed directly from the outer edges of the longitudinal slot are what also a very simple shape of the cylinder tube profile at the same time enables secure holding or anchoring of the sealing tape.
  • the longitudinal slot of the Cylinder tube self-formed retaining edges are provided that these the sides facing inside the cylinder tube from both sides in the Side walls of the longitudinal slot provided holding grooves are formed which preferably have additional retaining edges on the opposite sides for holding a suitably designed outer band.
  • a the longitudinal slot of outside to prevent the ingress of dirt, foreign bodies and hold such covering outer band this then essentially formed the same or similar to the inner sealing tape and a mirror image is arranged to this.
  • separate holding grooves can be in a further embodiment of the invention be provided that the side walls of the retaining grooves on the longitudinal slot side facing away, or preferably also on both sides, in the area of the groove base are undercut, the transition from holding groove to undercut that cooperating with the associated holding element of the holding strip Holding edge forms. This results in a very secure positive fit Hold the sealing tape near the two elongated sealing areas.
  • the sealing tape and, if appropriate, preferably also the outer tape consists of elastic material, preferably plastic, at least the sealing strip of the sealing tape inserted or formed linear, in Longitudinally oriented reinforcements, preferably made of steel wire or Kevlar threads. This enables a practical production of Sealing tape or outer tape.
  • FIG. 1 shows a partial longitudinal section through an inventive Pressure cylinder and FIGS. 2 to 8 show detail sections in the area of Longitudinal slot of the cylinder tube of different versions.
  • the rodless pressure medium cylinder according to FIG. 1 has an in a cylinder tube 2 longitudinally movable piston 19 and an engaging, through a longitudinal slot 1 in the cylinder tube 2 projecting transmission element 20 on. Furthermore, the longitudinal slot 1 is on both sides of the Piston 19 sealing tape 3 provided from the inside, which in Area of the transmission element 20 through this or the piston 19 is. The longitudinal slot 1 is covered on the outside by an outer band 14, which is also guided through this in the area of the transmission element 20. Sealing tape 3 and outer tape 14 are in the area of the cylinder tube 2 on both sides tightly fitting covers 21 attached, these covers 21 also Have supply lines 22 for the pressure medium.
  • the force exerted by the pressure medium on the piston 19 is via the Piston 19 attacking and protruding from the lateral longitudinal slot 1 Transmission element 20 to be driven to a not shown here Transfer facility.
  • the seal on both sides of the piston 19 Pressure chambers 23 and 24 take place on the one hand via sealing rings 25 on the piston 19 and on the other hand by the sealing tape covering the longitudinal slot 1 from the inside 3, which in the unpressurized area between the sealing rings 25 to the inside to passed under the transmission element 20 or through the piston 19 is.
  • this is the longitudinal slot 1 in the cylinder tube 2 from the inside covering sealing tape 3 one with two longitudinally extending sealing areas 4, 5 in the area of the inside of the cylinder End of the longitudinal slot 1 cooperating sealing strips 6 and two the outside of the sealing strip 6 arranged holding strips 7 with two themselves with respect to the central plane 8 of the longitudinal slot 1, in the essentially longitudinally extending and outwardly directed holding elements 9 having.
  • the holding elements 9 of the holding strip 7 engage to hold the Sealing tape 3 in the longitudinal slot 1 at here stationary in the longitudinal slot 1 itself trained holding edges 10, with which the sealing areas 4, 5th Seal against sealing tape 3 and initial leakage even when the interior is depressurized be avoided when pressurizing the interior.
  • the holding edges 10 are here on the inside of the cylinder tube 2 facing sides from both sides in the side walls 11 of the longitudinal slot 1 provided holding grooves 12 formed on their the holding edges 10th opposite sides additional retaining edges 13 for holding one have appropriately designed outer band 14.
  • This outer band 14 covers the longitudinal slot 1 from the outside and thus prevents, for example the penetration of foreign bodies or contaminants into the longitudinal slot 1.
  • the sealing tape 3 and the outer tape 14 are preferably made of plastic, for example polyurethane, here the sealing strip 6 of the sealing tape 3 inserted or shaped linear, aligned in the longitudinal direction Reinforcements 15, for example made of steel wire or Kevlar threads.
  • Reinforcements 15 for example made of steel wire or Kevlar threads.
  • lateral grooves 16 'of Seal strip 6 in the area of the sealing areas 4, 5 to refer to a separate processing of the corresponding surfaces of the sealing strip 6 for Improvement of the sealing effect on the side facing the cylinder interior enable or simplify.
  • FIG. 4 differs from that of FIG. 3 in essential only in that now the side walls of the retaining grooves 16 only have an undercut 17 on the side facing away from the longitudinal slot 1, into which the respective holding element 9 of the holding strip 7 engages or where it rests on the corresponding retaining edge 10.
  • the outer band 14 is here provided with retaining lips 18 which engage in outer retaining grooves 19. Otherwise, the same applies to the explanations according to FIGS. 2 and 3 Noted.
  • the retaining edges 10 are directly from the outer edges of the longitudinal slot 1, here the longitudinal slot 1 through the Sealing tape 3 is practically filled, so that there is a separate outer tape superfluous.
  • sealing area 4 deviating from the straight version shown on the left can be arbitrarily curved (concave or convex), which is very different Influences on the seal or additional holder in the longitudinal slot enables.
  • the outer bands 14 shown in FIGS. 7 and 8 do not need of course 1 indicated by the transmission element 20 to because they are divided lengthways and thus the transmission element 20th just slide in between.
  • the Sealing tape 3 in the longitudinal slot 1 on holding edges 10 provided on the cylinder form-fitting, which means secure holding and sealing even in unpressurized Condition of the respective interior of the cylinder allows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Sealing Devices (AREA)
EP99890130A 1998-07-01 1999-04-21 Vérin à pression fluidique sans tige Expired - Lifetime EP0969213B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT99890130T ATE269947T1 (de) 1998-07-01 1999-04-21 Kolbenstangenloser druckmittelzylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT44298U 1998-07-01
AT0044298U AT2690U1 (de) 1998-07-01 1998-07-01 Kolbenstangenloser druckmittelzylinder

Publications (3)

Publication Number Publication Date
EP0969213A2 true EP0969213A2 (fr) 2000-01-05
EP0969213A3 EP0969213A3 (fr) 2002-04-03
EP0969213B1 EP0969213B1 (fr) 2004-06-23

Family

ID=3490730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890130A Expired - Lifetime EP0969213B1 (fr) 1998-07-01 1999-04-21 Vérin à pression fluidique sans tige

Country Status (6)

Country Link
US (1) US6321636B1 (fr)
EP (1) EP0969213B1 (fr)
JP (1) JP4363706B2 (fr)
AT (2) AT2690U1 (fr)
DE (1) DE59909791D1 (fr)
ES (1) ES2224593T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945067A1 (de) * 1999-09-20 2001-03-22 Bosch Gmbh Robert Kolbenstangenloser Druckmittelzylinder
WO2002075163A3 (fr) * 2001-02-28 2002-12-12 Festo Ag & Co Entrainement lineaire sans tige de piston

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857780B2 (en) * 2002-11-15 2005-02-22 Phd, Inc. Rodless slide assembly
MX2007015685A (es) * 2005-06-13 2008-02-21 Norgren Inc Cinta de sellado termico.
CN103939611A (zh) * 2014-05-07 2014-07-23 夏彤宇 开口气缸的柔性开口紧固与密封装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082829A1 (fr) 1981-12-22 1983-06-29 AB Mecman Dispositif associé à un cylindre à pression de fluide sans tige de piston
EP0147803A2 (fr) 1983-12-23 1985-07-10 Tol-O-Matic, Inc. Cylindre à pression

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429783A1 (de) * 1984-08-13 1986-02-20 Herion-Werke Kg, 7012 Fellbach Kolbenstangenloser zylinder
US4829881A (en) * 1987-03-12 1989-05-16 Ckd Corporation Rod-less cylinder
IT1217812B (it) * 1988-06-08 1990-03-30 Univers S P A Dispositivo di tenuta per cilindri pneumatici senz,asta
JPH07111203B2 (ja) * 1991-09-06 1995-11-29 エスエムシー株式会社 ロッドレスシリンダ
JP3095873B2 (ja) * 1992-03-19 2000-10-10 シーケーディ株式会社 ロッドレスシリンダ
DE4400453C2 (de) * 1994-01-11 1996-11-07 Maschimpex Handels & Consulting Ag Linearantrieb
DE4400454C2 (de) * 1994-01-11 1996-11-07 Invest Tech Ag Kolbenstangenloser Linearantrieb
DE9410393U1 (de) * 1994-06-28 1994-08-18 Festo Kg, 73734 Esslingen Linearantrieb
WO1997040279A1 (fr) * 1996-04-22 1997-10-30 Tol-O-Matic, Inc. Palier a fente
US5996569A (en) * 1997-04-25 1999-12-07 Wilson; Keith W. Transparent rear bow sight

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082829A1 (fr) 1981-12-22 1983-06-29 AB Mecman Dispositif associé à un cylindre à pression de fluide sans tige de piston
EP0147803A2 (fr) 1983-12-23 1985-07-10 Tol-O-Matic, Inc. Cylindre à pression

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945067A1 (de) * 1999-09-20 2001-03-22 Bosch Gmbh Robert Kolbenstangenloser Druckmittelzylinder
WO2002075163A3 (fr) * 2001-02-28 2002-12-12 Festo Ag & Co Entrainement lineaire sans tige de piston
US6910408B2 (en) 2001-02-28 2005-06-28 Festo Ag & Co. Linear drive with no connecting rod

Also Published As

Publication number Publication date
AT2690U1 (de) 1999-02-25
ATE269947T1 (de) 2004-07-15
EP0969213A3 (fr) 2002-04-03
ES2224593T3 (es) 2005-03-01
EP0969213B1 (fr) 2004-06-23
US6321636B1 (en) 2001-11-27
JP2000035009A (ja) 2000-02-02
DE59909791D1 (de) 2004-07-29
JP4363706B2 (ja) 2009-11-11

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