EP1085218A2 - Vérin sans tige - Google Patents

Vérin sans tige Download PDF

Info

Publication number
EP1085218A2
EP1085218A2 EP00119717A EP00119717A EP1085218A2 EP 1085218 A2 EP1085218 A2 EP 1085218A2 EP 00119717 A EP00119717 A EP 00119717A EP 00119717 A EP00119717 A EP 00119717A EP 1085218 A2 EP1085218 A2 EP 1085218A2
Authority
EP
European Patent Office
Prior art keywords
sealing tape
sealing
cylinder
pressure medium
support
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.)
Withdrawn
Application number
EP00119717A
Other languages
German (de)
English (en)
Other versions
EP1085218A3 (fr
Inventor
Christine Schuessler
Manfred Moeck
Armin Dehlen
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 EP1085218A2 publication Critical patent/EP1085218A2/fr
Publication of EP1085218A3 publication Critical patent/EP1085218A3/fr
Withdrawn legal-status Critical Current

Links

Images

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 is based on a rodless Pressure cylinder according to the preamble of claim 1 specified genus.
  • Such a rodless one is known from EP 0 260 344 B1 Pressure cylinder known in which to hold the inner Sealing tape in the longitudinal slot if there is no internal pressure Holding device is provided, in which within the Longitudinal slot a profiled central web of an outer Sealing tape between two flanges forming a longitudinal groove of the inner sealing tape snaps into place.
  • Holding device With one Holding device must have outer sealing tape, inner sealing tape and slot are matched, this elaborate holding device relatively much space and one relatively wide slot required. The size of the cylinder can therefore be reduced poorly.
  • the outside can also Sealing tape in its position slightly in width slip and thus secure mounting and sealing endanger with the help of the inner sealing tape.
  • DE 3 807 786 A1 describes a rodless one Pressure cylinder known in the case of a sealing tape paired nose-shaped protruding outwards Retaining ribs are arranged in associated pairs Grip the arranged holding grooves in the cylinder barrel. So that leaves establish a positive connection to the Always keep the sealing tape on the cylinder tube when the Interior is depressurized.
  • the inner sealing tape has one essentially rectangular cross-section and lies in one correspondingly large recess in the cylinder barrel at the Longitudinal slot connects inwards and inwards is open.
  • the one running between the retaining ribs outside facing top of the sealing tape serves as Contact surface, which is fixed to the housing, from the shoulders Recess formed support surfaces abuts.
  • the sealing tape has sealing lips in pairs which, however, are relatively small and therefore only narrow Cover sealing strips.
  • the sealing tape also builds through its rectangular cross section is relatively large and requires a lot Sealing material.
  • This sealing tape is also poorly suited for cylinders with circular cross-section.
  • Can also at Pressure load if there is a risk of leakage the sealing tape covering the longitudinal slot under the The internal pressure bends in a circular arc and thereby the Lift the sealing lips off their sealing surfaces so that compressed air penetrate there and between the sealing tape and the inner wall of the cylinder can leak in the area of the recess to the longitudinal slot.
  • the rodless pressure medium cylinder according to the invention with the characterizing features of the main claim on the other hand, the advantage that in unpressurized or low pressure condition a secure and stable mounting of the inner sealing tape on the cylinder inner wall and thus a good tightness is achieved.
  • no outer masking tape is required for mounting the inner Sealing tape.
  • the Pressure cylinder enables the lowest possible Effort a compact and stable construction.
  • the piston of the Pressure cylinder can be operated effectively if possible low leakage, with an occurrence of undesirable Venturi effect is avoided. in the pressurized condition can change the inside of the Approach the sealing tape of a circular shape and thus one low-wear and low-friction operation of the cylinder support.
  • the pressure cylinder builds inexpensive and enables permanent operation.
  • FIG. 1 shows a highly simplified representation rodless pressure medium cylinder 10, which depends on Used as a pneumatic or low-pressure hydraulic cylinder can be used.
  • the Pressure cylinder 10 has a generally aluminum existing cylinder tube 11 on its two front ends by two attached end flanges 12 is sealed and sealed in its cylindrical Interior 13 a cylindrical piston 14 longitudinally displaceable is led.
  • Power transmission element 16 protrudes to the outside Connection to a not shown, by him driven machine element is set up.
  • the longitudinal direction of the cylinder tube 11 is the longitudinal slot 15 on both sides of the power transmission element 16 by an in the interior 13 of the cylinder tube 11, flexible sealing tape 17 sealed to his two Ends is anchored in the end flanges 12.
  • the sealing tape 17 is through a corresponding opening 18 in the piston area passed under the power transmission element 16 and on both sides of the piston 14 with the aid of a holding device 19 in a manner sealing the interior 13 in the Longitudinal slot 15 held.
  • FIG. 2 now shows a cross section according to II-II in FIG 1, the area of the cylinder tube 11 with the slot 15 and the sealing tape 17 shown in a greatly enlarged scale is.
  • a depressurized state of the Pressure cylinder 10 shown so if the interior 13 is not pressurized or only one has comparatively low residual pressure.
  • 2 shows an enlarged cross section, the Longitudinal slot 15 through a pair of opposing Side surfaces 21 formed.
  • the area of the longitudinal slot 15 is in the cylinder tube 11 with the associated sealing tape 17 formed symmetrically to a plane 22.
  • In the lower one Area of the longitudinal slot 15, that is to the interior 13 of the Pressure cylinder 10 out, are in the side surfaces 21st formed in pairs holding grooves 23, the parts of the Represent holding device 19.
  • These holding grooves 23 that extend over the entire length of the longitudinal slot 15, are directed obliquely upwards into the side surfaces 21 incorporated so that their sloping, lower Boundary surfaces 24 with each other an obtuse angle lock in.
  • the longitudinal slot 15 is provided through a recess 25 expanded so that in the cylinder tube 11 at a distance from the Holding grooves 23 are formed step-shaped support grooves 26 which are also in pairs in the cylinder tube 11.
  • step-shaped support grooves 26 are also in pairs in the cylinder tube 11.
  • These support grooves 26 are in pairs in the same horizontal Level support surfaces 27 formed, which are the side surfaces 21 cut substantially vertically.
  • the flexible sealing tape 17 usually consists of a elastic plastic material or a rubber material and has essentially the cross section of a isosceles trapezes, the short top of which is over two equally long sloping sides with the longer underside are connected.
  • On the sealing tape 17 are in the area of Holding ribs 32 protruding like a nose in pairs arranged approximately perpendicular to the imagined Sloping sides.
  • Figure 2 shows in more detail, grab these holding ribs 32 in the holding grooves 23 and form in this way the holding device 19 for the sealing tape 17th
  • the holding ribs 32 arranged in pairs lie against it the inclined boundary surfaces 24 and are in Cross section formed much smaller than that Holding grooves 23.
  • the holding device 19 ensures in Figure 2 shown depressurized state on the one hand for a secure positive mounting of the printing tape 17 in Cylinder tube 11, on the other hand, it must work when the Pressure cylinder be easily detachable.
  • support beads 33 formed in pairs, which essentially fill the recess 25.
  • Support surfaces 34 formed which the support surfaces 27 in Cylinder tube 11 are opposite.
  • the bearing surfaces 34 of the two are on the sealing tape 17 Support beads 33 from perpendicular side walls 35, which each via a hinge point 36 in the pass in pairs arranged sealing lips 37.
  • the two Sealing lips 37 are in turn sealing against the Sealing surfaces 29 in the cylinder tube 11.
  • the two Sealing lips 37 thus delimit a flat underside 38 of the Sealing tape 17 through which the interior 13 in Cylinder tube 11 tight against the longitudinal slot 15 is cordoned off.
  • the width of this underside 38 is approximately twice the width of the top 39 with which the sealing tape 17 faces the slot 15.
  • At the in Figure 2 shown depressurized state run the Top 39 and bottom 38 substantially parallel to each other and form essentially flat surfaces.
  • a Stiffening of the sealing tape serving flexible wire 41 stored over the entire length of the sealing tape 17 extends and for compensation of Linear expansion among the different Operating conditions.
  • the mode of operation of the rodless Pressure cylinder 10 is only explained to the extent that this is necessary to understand the invention.
  • the basic mode of operation of the double-acting Pressure cylinder 10 with an alternating Pressurizing the piston 14 and this occurring sealing function by the in the longitudinal slot 15th In and out moving sealing tape 17 is considered to be known provided.
  • the one shown in Figure 2 depressurized state of the cylinder 10, the sealing tape 17 in Area of the interiors 13 through the holding device 19 positively held in the longitudinal slot 15.
  • the holding ribs 32 do not perform any sealing function.
  • the holding device 19 on the one hand for a secure mounting of the sealing tape 17 and for good Sealing and on the other hand for easy loosening of the Holding device 19 ensures when the sealing tape 17 from the Slit 15 led out and in the piston 14 under the Power transmission element 16 must be passed.
  • FIG. 3 now shows the pressure medium cylinder 10 according to FIG 2 in its pressurized condition. It will Sealing tape 17 by the pressure in the interior 13 in his sealing position held. The take over Sealing lips 37 continue the sealing function. Through the The sealing tape 17 experiences a pressurization Deflection in the radial direction, which is now the Contact surfaces 34 of the sealing tape 17 on the support surfaces 27 Support in the cylinder barrel 11.
  • the function of Holding device 19 is now canceled because the holding ribs 32 freely extend into the holding grooves 23 on all sides and thus lifted off the inclined boundary surfaces 24 are.
  • the level in Figure 2 bottom 38 shown slightly towards slot 15 bent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP00119717A 1999-09-20 2000-09-09 Vérin sans tige Withdrawn EP1085218A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19945067 1999-09-20
DE1999145067 DE19945067A1 (de) 1999-09-20 1999-09-20 Kolbenstangenloser Druckmittelzylinder

Publications (2)

Publication Number Publication Date
EP1085218A2 true EP1085218A2 (fr) 2001-03-21
EP1085218A3 EP1085218A3 (fr) 2003-09-17

Family

ID=7922675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119717A Withdrawn EP1085218A3 (fr) 1999-09-20 2000-09-09 Vérin sans tige

Country Status (2)

Country Link
EP (1) EP1085218A3 (fr)
DE (1) DE19945067A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437514A2 (fr) * 2003-01-10 2004-07-14 Carl Freudenberg KG Vérin sans tige

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005020280B4 (de) * 2005-04-28 2007-08-02 Bosch Rexroth Teknik Ab Druckmittelzylinder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807786A1 (de) 1987-03-12 1988-09-22 Ckd Corp Kolbenstangenloser zylinder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631514A1 (de) * 1986-09-17 1988-03-24 Proma Prod & Marketing Gmbh Druckmittelzylinder
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
JP3818752B2 (ja) * 1997-09-24 2006-09-06 Ｓｍｃ株式会社 ロッドレスシリンダ
SE511691C2 (sv) * 1998-03-27 1999-11-08 Mecman Ab Rexroth Förfarande och ämne för framställning av ett tätningsband till en slitscylinder
AT2690U1 (de) * 1998-07-01 1999-02-25 Hygrama Ag Kolbenstangenloser druckmittelzylinder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807786A1 (de) 1987-03-12 1988-09-22 Ckd Corp Kolbenstangenloser zylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437514A2 (fr) * 2003-01-10 2004-07-14 Carl Freudenberg KG Vérin sans tige
EP1437514A3 (fr) * 2003-01-10 2005-03-16 Carl Freudenberg KG Vérin sans tige

Also Published As

Publication number Publication date
DE19945067A1 (de) 2001-03-22
EP1085218A3 (fr) 2003-09-17

Similar Documents

Publication Publication Date Title
DE2759943C2 (de) Dichtungsanordnung für die Kolbenstange eines Stoßdämpfers
EP1744062B1 (fr) Vérin avec amortissement de fin de course
EP0260344B1 (fr) Cylindre pour fluide sous pression
EP0069199B1 (fr) Vérin à fluide
DE2932131A1 (de) Daempfungsvorrichtung
EP0068088A1 (fr) Vérin à fluide à cylindre fendu et extrémitées fermées
DE2011019A1 (de) Kingdichtung. Turolla, Marco, Bologna (Italien); Loesenbeck, Dr. Otto; Stracke, -Ing. Alexander; Loesenbeck, Dipl.-Karl-Otto; Pat.-Anwälte, 4800 Biele-
EP0141405B1 (fr) Cylindre à fluide de pression
DE2847728A1 (de) Gasfeder mit aufgehobener ausschubkraft bei eingefahrener kolbenstange
DE4024716A1 (de) Druckmittelzylinder mit laengsgeschlitztem zylinderrohr
DE20110365U1 (de) Kupplungsvorrichtung zur Übertragung von Fluiddruck
DE3914889A1 (de) Kolbenstangenloser arbeitszylinder
EP1085218A2 (fr) Vérin sans tige
DE3505167A1 (de) Linearantrieb
DE10038734C2 (de) Gedämpfter Pneumatikzylinder zur Erzeugung einer konstanten langsamen linearen Antriebsbewegung
DE4126700C1 (en) Windscreen wiper equipment for vehicle - has transmission rod coupling with telescopic overlapping parts which move when normal operating force is exceeded
DE4316005A1 (de) Drehschieberventil für Hilfskraftlenkungen von Kraftfahrzeugen
EP0969213A2 (fr) Vérin à pression fluidique sans tige
CH650845A5 (de) Steuerventilbatterie.
EP0672793A1 (fr) Dispositif d'obturation
DE19609733C1 (de) Aktuator zur Erzeugung hoher Stellkräfte und großer Stellwege
DE2104502A1 (de) Hydraulische Hubvorrichtung
EP0544105B1 (fr) Compresseur à pistons économe en énergie
EP0385188A1 (fr) Vérin à fluide sous pression
AT407430B (de) Kombiniertes antriebs- und führungssystem für eine zu bewegende last

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040401