EP0433601A2 - Dispositif à genouillère hydraulique - Google Patents

Dispositif à genouillère hydraulique Download PDF

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Publication number
EP0433601A2
EP0433601A2 EP90120066A EP90120066A EP0433601A2 EP 0433601 A2 EP0433601 A2 EP 0433601A2 EP 90120066 A EP90120066 A EP 90120066A EP 90120066 A EP90120066 A EP 90120066A EP 0433601 A2 EP0433601 A2 EP 0433601A2
Authority
EP
European Patent Office
Prior art keywords
housing
piston rod
toggle
lever
clamping
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
EP90120066A
Other languages
German (de)
English (en)
Other versions
EP0433601A3 (en
EP0433601B1 (fr
Inventor
Josef-Gerhard Tünkers
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0433601A2 publication Critical patent/EP0433601A2/fr
Publication of EP0433601A3 publication Critical patent/EP0433601A3/de
Application granted granted Critical
Publication of EP0433601B1 publication Critical patent/EP0433601B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive

Definitions

  • the invention relates to a pressure medium-operated toggle lever tensioning device according to the preamble of claim 1.
  • Such a toggle lever tensioning device is previously known from DE-AS 22 22 686.
  • a support plate in particular transport trolley or pallet support plate, is already known, with a clamping device for objects that can be clamped on the plate, the clamping device having a clamping lever as a connecting link between two rockers and forming a four-bar linkage with its clamping part protrudes beyond the joint of a rocker and an adjusting drive element is arranged on the four-bar linkage.
  • the support plate is provided with a through opening arranged in the adjustment path of the tensioning lever, the tensioning device being arranged under the support plate and the tensioning part of the Clamping lever is designed in the form of a hook, the joints of the four-bar linkage being arranged in such a way and the rockers are dimensioned such that the clamping lever in the clamping position extends across the passage opening with its longitudinal axis transverse to its course when the clamping lever is in the retracted position under the support plate.
  • the drive member of the four-bar linkage is designed in the form of a toggle lever drive.
  • a clamping tool is known with a back and forth in guides on a carrier, actuated by a drive pressure block and a pivot arm articulated via a fixed pivot on the carrier with an inclined operating slot extending from the movement path of the printing block , with which the pressure block slidably cooperates in order to pivot and clamp the clamping arm.
  • the actuating slot contains a first leg that is more inclined to the path of movement of the printing block and a second leg that is inclined less to the path of movement of the printing block.
  • a clamping device in which a collet is moved back and forth by a piston-cylinder unit which is acted upon alternately on both sides by pressure.
  • the tensioning arm is arranged so as to be pivotable via a tab on a bolt fixed to the housing and at a distance from it by a second bolt on the housing.
  • a clamping device in particular for clamping workpieces, which has a lifting cylinder arranged on a base plate with clamping iron, the lifting cylinder being pivoted at one end to the base plate, while the other end is a guide device, preferably Guide pins, which are guided by fixed curved guideways.
  • the invention has for its object to improve a toggle lever clamping device of the prerequisite type to the extent that it can also be used as a base clamp.
  • this toggle lever tensioning device is made usable as a base clamp, so that the tensioning hook can be moved completely into the space of the housing in which the toggle joint arrangement is also located and which is connected to the free atmosphere.
  • This tensioning hook is moved in the tightest of spaces and precisely guided by a link guide. This also results in a stable articulation and guidance of the tensioning hook.
  • the tensioning hook can always be moved exactly on its predetermined path without the need for many joints and link elements.
  • the tension hook itself passes through an opening in the top plate of the Out of the housing if it is to be brought into the clamping position.
  • Claim 2 describes a particularly advantageous embodiment, in which the housing consists of one piece from a casting and can be connected, for example, with the cylinder for the toggle lever clamping device in one piece, or in another way functionally in one piece.
  • the upper plate of the cast part simultaneously forms a mounting plate and can have suitable bores or holes for this, which also applies to the plate opposite this plate.
  • the housing closes the toggle joint arrangement and the link support relatively dirt and dust-tight. On in any case, it protects these parts from direct impact and shock loads ( claim 3 ).
  • the reference numeral 1 denotes a housing-like cylinder in which a piston 2 is displaceable and sealing in the direction A by seals, not shown or B is displaceably guided in a cylinder space 3.
  • Pressure medium in particular air pressure, is supplied to the cylinder chamber 3 through connection channels 4 or 5, as a result of which the piston 2 is to be acted upon alternately on both sides with pressure medium pressure.
  • a piston rod 6 is integrally connected to the piston 2 and is sealed in the region of a collar 7 by sealing means, not shown.
  • the piston rod 6 exits into a movement space 8, which is connected to the free atmosphere or an ambient space via an opening 9 of large cross section.
  • the movement space 8 is enclosed by a housing 10 which, in the embodiment shown, consists of one piece from cast material and is either integrally connected to the cylinder 1 or is functionally connected. The latter is not shown.
  • a toggle joint arrangement 11 is arranged, which is assigned at least one bracket 12, which is pivotally connected to the piston rod 6 via a piston rod pin 13.
  • the piston rod pin 13 is orthogonal to the longitudinal axis of the Piston rod 6 arranged and carries a roller 14 and 15 at each end.
  • Each of the rollers 14 and 15 is guided in a guide groove 16 and 17, respectively.
  • the guide grooves 16 and 17 run parallel to one another and parallel to the longitudinal axis of the piston rod 6 and are part of the housing 10 and incorporated therein. As a result, the piston rod pin 13 is guided in the housing 10 with relatively little friction, which also has advantages when the toggle joint arrangement 11 is driven over dead center.
  • the tab 12 is pivotally coupled at its end via a stationary toggle joint axis 18 to a rocker 19 which is arranged in the housing 10 so as to be pivotable about an axis 20 fixed to the housing.
  • a two-armed lever 21 is pivotally connected to the axis 18, which is arranged pivotably in the direction C or D and which can be pivoted completely into the movement space 8 from the tensioned position from FIG. 1 into the release position according to FIG.
  • the two-armed lever 21 is guided through a pivot pin 22 in a link slot 23, the longitudinal axis of which extends approximately at 45 ° to the longitudinal axis of the piston rod 6.
  • the pivot pin 22 can at its ends with at least one roller for low friction be provided.
  • the link slot 23 can only be provided on one housing side of the housing 10. However, it is also possible to arrange the link slots in pairs on opposite sides of the housing and to guide the pivot pin 22 at its opposite end through a roller in the associated link slot.
  • an end stop is arranged, which is adjustable by a screw 25.
  • inductive proximity switches or the like can also be assigned to the piston 2. It is also possible to change the shape of the two-armed lever 21 as required. As can be seen, the two-armed lever 21 describes a relatively narrow circular arc, so that in the release position it is arranged in a protected manner in the movement space 8.
  • the upper plate 26 can be provided with one or more bores for fastening the toggle lever tensioning device, although this is not shown. This also applies to the side plate 27 and the base plate 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Jigs For Machine Tools (AREA)
  • Transmission Devices (AREA)
EP19900120066 1989-11-17 1990-10-19 Dispositif à genouillère hydraulique Expired - Lifetime EP0433601B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938208 1989-11-17
DE19893938208 DE3938208C1 (fr) 1989-11-17 1989-11-17

Publications (3)

Publication Number Publication Date
EP0433601A2 true EP0433601A2 (fr) 1991-06-26
EP0433601A3 EP0433601A3 (en) 1992-02-26
EP0433601B1 EP0433601B1 (fr) 1994-06-08

Family

ID=6393702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900120066 Expired - Lifetime EP0433601B1 (fr) 1989-11-17 1990-10-19 Dispositif à genouillère hydraulique

Country Status (3)

Country Link
EP (1) EP0433601B1 (fr)
DE (1) DE3938208C1 (fr)
ES (1) ES2055272T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412722U1 (de) * 1994-08-06 1994-09-29 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Kniehebelspannvorrichtung
EP0778107A1 (fr) * 1995-12-05 1997-06-11 TÜNKERS MASCHINENBAU GmbH Dispositif de serrage à genouillère
CN108994128A (zh) * 2018-08-01 2018-12-14 浙江金瑞五金索具有限公司 一种弹簧钩扳弯机
CN109227175A (zh) * 2018-11-15 2019-01-18 宁波市慈力金属制品有限公司 一种用于毂盖端面车削的工装夹具
CN115502906A (zh) * 2022-08-22 2022-12-23 中国北方发动机研究所(天津) 一种多用途夹具

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715452C1 (de) * 1997-04-10 1998-09-24 Mannesmann Ag Spannvorrichtung zum Halten oder Verfahren von flachen Werkstücken
DE29718643U1 (de) * 1997-10-21 1997-12-11 Tünkers Maschinenbau GmbH, 40880 Ratingen Druckmittelbetätigbare kombinierte Zentrier- und Spannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
DE69805497T2 (de) * 1998-02-18 2003-01-16 Delaware Capital Formation, Inc. Geschlossene pneumatische Spannvorrichtung
DE102004040606B3 (de) * 2004-08-21 2006-01-12 Tünkers Maschinenbau Gmbh Als Gripper ausgebildete Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
ITTO20080914A1 (it) * 2008-12-09 2010-06-10 Vep Automation Srl Dispositivo d'aggancio di pezzi, particolarmente di fogli di lamiera
DE202011106409U1 (de) 2011-09-29 2011-11-22 Hohenstein Vorrichtungsbau Und Spannsysteme Gmbh Spannkassette mit Niederzugspanner
CN102658484A (zh) * 2012-04-25 2012-09-12 浙江宏源车轮有限公司 工程车无内胎车轮气门孔专用夹具
CN106903630B (zh) * 2017-04-27 2019-03-01 苏州赛腾精密电子股份有限公司 一种平行夹紧机构
CN108942030B (zh) * 2018-06-23 2020-10-02 刘道灵 一种气动单向拉紧勾销装置
CN110315371B (zh) * 2019-07-31 2022-01-04 中冶华天工程技术有限公司 一种钢板桩锯切自动侧夹紧装置
DE102020003577B3 (de) * 2020-06-16 2021-06-10 Olaf und André Tünkers GbR (vertretungsberechtigter Gesellschafter: Dipl.-Ing. Olaf Tünkers, 40883 Ratingen) Unterbodenspanner mit Kniehebelgelenk und Kulissenführung, zur Verwendung im Karosseriebau der Kfz-lndustrie
US12576792B2 (en) 2022-11-30 2026-03-17 Rivian Ip Holdings, Llc Clamp mechanism
CN118110391A (zh) * 2022-11-30 2024-05-31 瑞维安知识产权控股有限责任公司 闩锁机构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD60527A (fr) *
US2995794A (en) * 1959-07-20 1961-08-15 Hacking Vernon Edward Toggle clamp
US3480271A (en) * 1967-10-18 1969-11-25 Gen Motors Corp Toggle clamp
FR1568574A (fr) * 1968-05-31 1969-05-23
US3565415A (en) * 1968-07-05 1971-02-23 Leland F Blatt Power-operated bar clamp
US3570835A (en) * 1968-10-08 1971-03-16 Dover Corp Power operated clamping device
US3545050A (en) * 1969-01-30 1970-12-08 I S I Mfg Inc Power clamp with pull-back action
FR2157696B3 (fr) * 1971-10-26 1974-06-07 Maac Ets
DE2222686B2 (de) * 1972-05-09 1980-06-12 Tuenkers Maschinenbau Gmbh, 4030 Ratingen Druckmittelbetatigte Kniehebelspannvorrichtung, insbesondere für Karosserieteile
DE2457933A1 (de) * 1974-12-07 1976-06-16 Schuler Gmbh L Schnellspannvorrichtung fuer pressen
DE3419878C1 (de) * 1984-05-28 1985-12-19 De-Sta-Co Metallerzeugnisse Gmbh, 6000 Frankfurt Tragplatte insbesondere Transportwagen- od. Palettentragplatte mit Spannvorrichtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412722U1 (de) * 1994-08-06 1994-09-29 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Kniehebelspannvorrichtung
EP0778107A1 (fr) * 1995-12-05 1997-06-11 TÜNKERS MASCHINENBAU GmbH Dispositif de serrage à genouillère
CN108994128A (zh) * 2018-08-01 2018-12-14 浙江金瑞五金索具有限公司 一种弹簧钩扳弯机
CN109227175A (zh) * 2018-11-15 2019-01-18 宁波市慈力金属制品有限公司 一种用于毂盖端面车削的工装夹具
CN115502906A (zh) * 2022-08-22 2022-12-23 中国北方发动机研究所(天津) 一种多用途夹具

Also Published As

Publication number Publication date
ES2055272T3 (es) 1994-08-16
EP0433601A3 (en) 1992-02-26
EP0433601B1 (fr) 1994-06-08
DE3938208C1 (fr) 1990-11-22

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