EP0997232B1 - Clamping tool, especially a clamping clip, clamping rod or clamping bench - Google Patents

Clamping tool, especially a clamping clip, clamping rod or clamping bench Download PDF

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Publication number
EP0997232B1
EP0997232B1 EP99125704A EP99125704A EP0997232B1 EP 0997232 B1 EP0997232 B1 EP 0997232B1 EP 99125704 A EP99125704 A EP 99125704A EP 99125704 A EP99125704 A EP 99125704A EP 0997232 B1 EP0997232 B1 EP 0997232B1
Authority
EP
European Patent Office
Prior art keywords
clamping
push rod
slide
release lever
handle
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.)
Expired - Lifetime
Application number
EP99125704A
Other languages
German (de)
French (fr)
Other versions
EP0997232A3 (en
EP0997232A2 (en
Inventor
Stefan Blank
Klemens Degen
Zbigniew Noniewicz
Hans-Jürgen Schüller
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.)
Wolfcraft GmbH
Original Assignee
Wolfcraft 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
Family has litigation
Priority to DE19731579 priority Critical
Priority to DE19731579A priority patent/DE19731579A1/en
Application filed by Wolfcraft GmbH filed Critical Wolfcraft GmbH
Priority to EP98940087A priority patent/EP0998373B1/en
Publication of EP0997232A2 publication Critical patent/EP0997232A2/en
Publication of EP0997232A3 publication Critical patent/EP0997232A3/en
Application granted granted Critical
Publication of EP0997232B1 publication Critical patent/EP0997232B1/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7836595&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0997232(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/06Arrangements for positively actuating jaws
    • B25B5/068Arrangements for positively actuating jaws with at least one jaw sliding along a bar

Description

The invention relates to a clamping tool according to the generic term of claim 1.

A generic clamping tool in the form of a clamp is from German patent application DE 39 17 473 known. This known clamp has one movable jaw, which at the end of a push rod sitting. This jaw passes through a housing, which carries a second, fixed jaw. From the case protrudes a handle. By means of a handle that is pivotally arranged on the housing, and which on the Handle can be moved, the push rod be shifted so that the movable jaw is gradually moved towards the fixed jaw. On the handling side in the direction of the two clamping jaws the known clamp has a released one Non-return lock in the form of a clamping lever. This should prevent the movable jaw from moving in the opposite direction can be relocated. Stands out with a free end there the lever forming the backstop from the Housing out and can be swiveled around the Release backlash. In the released position the two jaws can move in the opposite direction move apart.

One is from the American patent specification 3,427,016 further clamp known. There sits parallel to Push rod a rotatable, toothed rod into which engages one end of a pivotable handle. By the two jaws can attack the teeth to be moved towards each other.

There is also one in the utility model 87 03 379.8 Clamp known. This is the release lever the backstop removed from the moving To bake.

Another clamp is from GB 21 78 689. The Manageability of this clamp is similar to that of the utility model 87 03 379.8.

The invention has for its object a generic Advantageously to further develop the clamp.

The problem is solved by the one specified in claim 1 Invention. Subclaims are advantageous Further training.

The first jaw is activated by operating the release lever gradually shifted back to the second jaw. As a result, real one-handed operation of the Guaranteed clamping tool. In a preferred one Design has the backstop one with Pull or push rod clampable or lockable slide. This slide can against the release lever the force of a return spring freely via the tension or Push rod to be relocated. If the operation of the Release lever ends, the slide moves in a jammed or locked position and is under Carrying the pull or push rod from the return spring moved back. The return spring preferably engages on one side of the slider and thus creates a missing one Counter tension or counter bearing of the opposite Side tilted. Around the slider sliding over the pull or push rod can, it is advantageous if the release lever with an arm on the attack side of the return spring pushes the slide to activate the locking action repealed. The release lever can still one Form a stop for the opposite side of the slide, by means of which the opposite side of the slide against a fixed stop can be pressed. For this the release lever is effectively fork-shaped. About this gradual return of the push rod it is advantageous if the release lever from operated a hand using the handle becomes. The handle can be gripped by one hand, there between the handle and the slant, in one The handle running at an angle to it forms a free space, which allows the operating handle to be gripped. It is then not necessary for the hand to grip the handle includes a total of two for lever actuation Lever, namely must also grip the handle.

Two embodiments of the invention are explained below with reference to the accompanying drawings. Show it:

Fig. 1
an inventive clamping tool in the configuration of a clamp in a first, untensioned position;
Fig. 2
a follow-up view of Figure 1 with the handle handle operated in the untensioned state;
Fig. 3
a representation with partially operated handle actuation, the two jaws are moved together while clamping a workpiece on a block;
Fig. 4
a follow-up to Figure 3, with handle handle and shortened handle arm.
Fig. 5
a follow-up view of FIG. 4, the non-return lock being released in the tensioned state;
Fig. 6
a subsequent representation of Figure 5, wherein the jaws move apart by actuating the backstop in the release direction.
Fig. 7
an assembly variant in which the clamping tool is designed as an expanding clamp;
Fig. 8
a second embodiment of the invention; and
Fig. 9
a third embodiment of the invention.

The clamp has a first jaw 1 and a second jaw 2. The first jaw 1 is via detachable connections, e.g. plug connections, Screws or the like with one end 3 'of Pull or push rod 3 firmly connected. The jaw 2 has a stepping gear housing which of the Push rod 3 is penetrated.

The stepper gearbox continues in one Handle part 33. Located at the attachment area of the handle part 33 there is an axis of rotation 32 about which a handle 10 is pivotable from an angled distance position in a contact position on the handle part 33. Adjacent an arm protrudes from the gear housing 10 a release lever 15, which by means of a Compression spring 34 is cushioned against the housing. In the rest arm acts on the active arm 18 of the release lever 15 a stationary stop 35. The active arm 18 has a cavity through which the train or Push rod 3 runs. Parallel to the arm 18 of the Release lever 15, which is pivotable about the bearing pin 16 is, a locking slide 14, on which its return side 19 engages a return spring 17 and the locking slide 14 against the direction of displacement the pull or push rod 3 is applied. The opposite side 20 of the locking slide 14 rests in the rest position against a fixed stop 24.

The handle 10 has a cavity 13. It is in the Area of the cavity 13 designed U-shaped. In these Hollow engages the second arm 7 of an operating lever 6 a. The operating lever 6 has an angular Shape and acted upon with his second arm 6 ', which forms an active arm, an area of application 9 of a take-away valve.

The driving slide 5 has as well as the locking slide 14 an opening through which the train or Push rod 3 protrudes. Just like the corresponding opening of the gate valve 14 has the opening of Driving slider 5 edges to deal with the train or To be able to tilt the push rod 3.

In the rest position, the driving slide 5 is by means of a compression spring penetrated by the pull or push rod 4, which is supported on the stops 35 pressed against the stops 22, 23 such that the Push rod 3 freely through the opening of the slider 5 can slide. As a result of the preload of the slider 5 and the associated cant with the narrow edges of the pull or push rod 3 is one Displacement of the push rod 3 only in the direction of the arrow possible.

The elongated hole 11, which is approximately at the apex of the obtuse angle Operating lever 6 is arranged, is about in the direction of extension of the operating lever 6 and is penetrated by a fixed journal 8. On a bias spring engages the side of the second arm 12, which is essentially in the direction of the extension of the elongated hole acts in such a way that without counterforce the knitting arm 36 has its greatest length.

If the operating handle 10, as shown in Fig. 2 is shifted against the handle part 33, so clamped on the one hand the biasing spring 12 and on the other hand is by the pivoting of the active arm 36 of the slider 5 from the arm end 31 on its application surface 9 acted upon and against the compression spring 4th relocated. Due to the tilt 27, 28 is in this Handle the pull or push rod 3 in Arrow direction shifted.

If the handle is released, the actuating lever moves 6 back. The spring 4 relocated the Carriage slider 5 in the rest position.

During this displacement of the driving slide 5 the pull or push rod remains undisplaced, because of their Relocation against the direction of the arrow due to the tilt 25, 26 of the gate valve 14 with the train or Push rod 3 is locked. Drive as shown in Fig. 3 the two jaws 1, 2 under clamping of a workpiece 29 on block, so increases force to be applied to pull or push rod 3 to shift relative to the jaw. From the handle 10 a greater force must be applied. This Power is transmitted to the operating lever 6. By the increasing force component in the direction of Elongated hole 11, the bias of the spring 12 is overcome, so that the slot 11 over the bearing pin 8th can slide what a shortening of the lever arm 36 to Consequence. Accompanying this, the extension 30 slides in the cavity 13 of the handle. As a result of this reduction in leverage of the active arm 36 can by means of the constant Lever arm of the handle 10 a greater force the application surface 9 are applied so that with the same effort, a greater clamping force between the two jaws 1 and 2 can be achieved, on the other hand, it is guaranteed that in the power-free Operation a large step size when handling is guaranteed.

The locking slide 14 can just as the driving slide 5 opposite by manipulation in the direction of the arrow be moved to the housing. The relocation of the Locking slide 4 takes place by actuating the release lever 15. The release lever 15 is in front of the handle 10 that one of his fingers in the free space brought between handle 10 and handle 33, the handle 10 gripping hand can be operated. A release is also possible if a workpiece extends over the push rod 3 and immediately before the flight to the fixed jaw 2 lying handle 33 lies. Especially when the workpiece then comes into contact with the handle 33 is possible if the clamping clamp in the position shown in FIG stretching function shown, the handle can no longer be included. In the shown in Fig. 7 The stretching function turns out to be fleeting Extension to the fixed jaw 2 protruding edge the handle 33 even as advantageous, as this as can serve additional contact surface on a workpiece.

Despite the impaired access to the handle such a workpiece system is an actuation the handle 10 and the release lever 15 but still possible without any problems. The release lever 15 is roughly diagonally opposite to the fixed jaw 2 on the housing. It acts in this way on the locking slide 14, that the application of the locking slide 14 with the Arm 18 of the release lever 1 canceled the tilt position is and the locking slide 14 can slide freely over the pull or push rod 3. The arm reaches for this 18 on the attack side 19 of the gate valve 14, on which side the return spring 17 acts. By moving the locking slide 14 in the direction of The return spring 17 is tensioned arrow. Will the Release lever 15 released, the return spring pulls on the attack side 19 against the locking slide 14 Arrow. This one-sided load on the release lever 15 causes a tilt 25, 26 to the opposite opening sides of the gate valve 14. Along with this, the locking slide jams 14 on the pull or push rod 3, so that the push rod 3 against the direction of the arrow from the return spring 17 is taken along so that the two jaws 1, 2nd be moved apart.

In the stretching function position shown in FIG. 7 is the movable jaw 1 on opposite Ends 3 '' of the push rod 3.

The embodiment shown in Fig. 8 works in an identical manner to that in FIGS. 1 to 7 Exemplified embodiment shown, only the housing shape is designed differently and the return spring 17th is somewhat shortened. Here too is the bearing pin 16 pivotable release lever 15 fork-shaped and forms an extension 21 which has a stop trains to the opposite side 20 of the gate valve 14 to press against the fixed stop 24.

In this version, too, the back of handle 33 goes into a recessed section over from which the push rod 3 protrudes. As with that in Figs. 1--7 The embodiment shown is that of the push rod 3 adjacent recessed section lower to Release lever 15 spaced as the back of the handle 33rd

The gearbox described above can not only on one One-handed clamps find application, but on everyone Kind of vice and especially on a clamping table. When used on a clamping table, that the jaws on two parallel to each other Spars lying across, in parallel are led to the spars and each spar is a prescribed one Has tension gear. The operation can take place in particular via a foot pedal.

The embodiment shown in Fig. 9 draws is characterized by an attractively designed housing shape. The pivot points of release lever 15 are also located here and handle 10 on the opposite side of the Jaws 1, 2 and on the same side as the one from lever 10, 15 protruding from the housing protrude handle 33, handle 10 and release lever 15 separate and free from the housing. During the handle 33 directly opposite the fixed jaw the release lever is diagonally opposite for the fixed jaw. Here, too, is shifting when tensioning the push rod or the movable jaw 1 in the opposite direction to the direction of actuation the handle 10. This variant also allows assembly the movable jaw 1 on the opposite Side 3 '' of the push rod 3. In this position can form the handle that protrudes from the housing Arm 33 in combination with the fixed jaw 2 a support function exercise.

Claims (5)

  1. Clamping tool, in particular clamp clip, vice or clamping bench, with a first (1) and a second clamping jaw (2), wherein the first clamping jaw (1), which is mounted on a traction or push rod (3), is displaceable stepwise in one direction relative to the second clamping jaw (2) by means of a first lever transmission system acting on an entraining slide which is displaceable against the return force of a spring (4), and with a releasable return lock which can be moved by means of a release lever (15) from a locking position to a sliding position, characterised in that the first clamping jaw (1) is displaceable back in the direction opposite the clamping direction stepwise relative to the second clamping jaw (2) by actuation of the release lever (15).
  2. Clamping tool according to claim 1, characterised in that the return lock includes a slide (14) which can be clamped or latched to the traction or push rod and which is freely displaceable over the traction or push rod (3) by the release lever (15) against the force of a return spring (17) and is displaced back in a clamping or latching position by the return spring (17), entraining the traction or push rod (3).
  3. Clamping tool according to claim 2, characterised in that the return spring (17) on one side engages a locking slide (14) and keeps the slide (14) in the locking position when the release lever (15) is not actuated.
  4. Clamping tool according to either of claims 2 or 3, characterised in that the release lever (15) with one arm (18) engages the engagement side (19) of the return spring (17) and upon actuation cancels the locking action.
  5. Clamping tool according to any of claims 2 to 4, characterised in that the locking slide (14) and/or the entraining slide (15) in each case comprises an opening which is provided with edges (25, 26 or 27, 28) and through which the push rod (3) extends and in its locking position locks with the narrow sides of the traction or push rod (3).
EP99125704A 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench Expired - Lifetime EP0997232B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19731579 1997-07-23
DE19731579A DE19731579A1 (en) 1997-07-23 1997-07-23 Clamping tool, especially clamp, vice or table
EP98940087A EP0998373B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP98940087A Division EP0998373B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench

Publications (3)

Publication Number Publication Date
EP0997232A2 EP0997232A2 (en) 2000-05-03
EP0997232A3 EP0997232A3 (en) 2000-11-22
EP0997232B1 true EP0997232B1 (en) 2002-10-23

Family

ID=7836595

Family Applications (3)

Application Number Title Priority Date Filing Date
EP99125705A Revoked EP0997233B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench
EP99125704A Expired - Lifetime EP0997232B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench
EP98940087A Expired - Lifetime EP0998373B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP99125705A Revoked EP0997233B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98940087A Expired - Lifetime EP0998373B1 (en) 1997-07-23 1998-06-26 Clamping tool, especially a clamping clip, clamping rod or clamping bench

Country Status (7)

Country Link
US (1) US6578837B1 (en)
EP (3) EP0997233B1 (en)
CN (3) CN1136078C (en)
AU (1) AU8853298A (en)
CA (2) CA2304718C (en)
DE (6) DE19731579A1 (en)
WO (1) WO1999004932A1 (en)

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WO2014124941A1 (en) 2013-02-14 2014-08-21 Wolfcraft Gmbh Detachable blocking device, in particular on a clamping tool

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DE102012212058A1 (en) * 2012-07-11 2014-01-16 Robert Bosch Gmbh Quick clamping device for clamping workpiece, has hand clamping unit for clamping workpiece between guide rail and counter bearing, and clamping lever that is pivotable around pivot axis transverse to longitudinal axis of guide rail
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DE202013100494U1 (en) 2013-02-04 2014-05-06 Wolfcraft Gmbh Clamps connector
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8114480B2 (en) 2006-06-14 2012-02-14 Aixtron Inc. Method for self-limiting deposition of one or more monolayers
WO2014124941A1 (en) 2013-02-14 2014-08-21 Wolfcraft Gmbh Detachable blocking device, in particular on a clamping tool
DE102013101479A1 (en) 2013-02-14 2014-08-28 Wolfcraft Gmbh Detachable locking device, in particular on a clamping tool
US9579775B2 (en) 2013-02-14 2017-02-28 Wolfcraft Gmbh Detachable blocking device, in particular on a clamping tool

Also Published As

Publication number Publication date
CN1899768A (en) 2007-01-24
DE19731579A1 (en) 1999-01-28
CA2304718C (en) 2009-03-31
DE19880089B4 (en) 2007-04-19
CA2304718A1 (en) 1999-02-04
CN100528490C (en) 2009-08-19
EP0997233A3 (en) 2000-11-22
CA2586001A1 (en) 1999-02-04
CN1389328A (en) 2003-01-08
EP0997233B1 (en) 2003-01-08
CN1136078C (en) 2004-01-28
EP0998373B1 (en) 2000-12-27
DE59806876D1 (en) 2003-02-13
EP0997233A2 (en) 2000-05-03
EP0997232A3 (en) 2000-11-22
EP0997232A2 (en) 2000-05-03
CA2586001C (en) 2009-11-17
DE59806061D1 (en) 2002-11-28
AU8853298A (en) 1999-02-16
CN100450719C (en) 2009-01-14
CN1265056A (en) 2000-08-30
DE19880089D2 (en) 1999-11-11
WO1999004932A1 (en) 1999-02-04
DE59800409D1 (en) 2001-02-01
US6578837B1 (en) 2003-06-17
EP0998373A1 (en) 2000-05-10
DE19861130A1 (en) 2000-04-06

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