EP1996370A1 - Outil de serrage, en particulier pince de serrage, bloc de serrage ou pince d'ouverture - Google Patents

Outil de serrage, en particulier pince de serrage, bloc de serrage ou pince d'ouverture

Info

Publication number
EP1996370A1
EP1996370A1 EP07727033A EP07727033A EP1996370A1 EP 1996370 A1 EP1996370 A1 EP 1996370A1 EP 07727033 A EP07727033 A EP 07727033A EP 07727033 A EP07727033 A EP 07727033A EP 1996370 A1 EP1996370 A1 EP 1996370A1
Authority
EP
European Patent Office
Prior art keywords
push
pull rod
release lever
release
return
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
EP07727033A
Other languages
German (de)
English (en)
Other versions
EP1996370B1 (fr
Inventor
Zbigniew Noniewicz
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
Application filed by Wolfcraft GmbH filed Critical Wolfcraft GmbH
Publication of EP1996370A1 publication Critical patent/EP1996370A1/fr
Application granted granted Critical
Publication of EP1996370B1 publication Critical patent/EP1996370B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B25B5/068—Arrangements for positively actuating jaws with at least one jaw sliding along a bar

Definitions

  • Clamping tool in particular tension clamp, vice or Spreizzwinge
  • the invention relates to a tool, in particular a clamp, a vice or a Spreizzwinge, with a drive housing through which a push / pull rod protrudes, which is foundeddschreibgesperr of a reverse gear from a reverse lock in a clamping direction displaced, wherein the reminddschreibsperre a in a reminddrücksperrgna
  • On the push / pull rod acting blocking element which can be brought to release the remindpressschreibstersperrenden effect by pivoting a release lever in a release position, in which the push / pull rod against the
  • the two-armed Release lever is pivotally mounted in the drive housing about a pivot point and having a power arm and an acting on the locking element at a point of attack load arm.
  • a generic tool describes the DE 19861130 Al.
  • the tool described there is a clamping tool in the form of a clamp.
  • the clamp has two jaws which, depending on the arrangement of the push / pull rod can be moved either gradually from one to the other of the stepping gear to or away from each other.
  • the tool can thus be used as a clamping or spreading tool.
  • Inside the drive housing is a stepping gear, which is formed by a handle which acts with an attack cam against a driving slide, which jams with the push / pull rod and thereby displaces the push / pull rod relative to the drive housing.
  • the driving slider and the handle are moved back to the starting position due to a tensioned return spring.
  • This backstop has a gate valve, which interacts with the push / pull rod, similar to the driving slide.
  • the back pressure lock can be disabled.
  • a load arm of the release lever engages an attack point on the gate valve.
  • the gate valve is thereby slightly pivoted from its locked position. If the release lever is pivoted beyond this release position, the gate valve is displaced relative to the push / pull rod.
  • a return spring is tensioned. If the release lever is released after reaching its pivot end position, then the locking slide jammed on the push / pull rod and takes it against the clamping direction with.
  • the jaws can be displaced in the opposite direction to the clamping direction. If the tool is used as a clamp, the jaws move away from each other when the release lever is actuated. This "reverse gear" also works when using the tool as
  • the to be displaced in the operation of the "reverse gear" on the drive housing free end of the push / pull rod has an end stop, which limits the displacement of the push / pull rod against the clamping direction when it strikes against the drive housing. It may lead to an undesirable impairment of the operation of the clamp when in this stop position the locking slide is displaced to its Schwenkend- position, as starting from the stop position no further backward displacement of the push / pull rod is possible.
  • the invention has for its object to further develop the genus in modern tools nutzsvorteilhaft.
  • the problem is solved by the features specified in the claims.
  • Each claim is capable of independently solving the problem underlying the invention.
  • Each claim can be combined with any other claim.
  • the release lever rotates at its pivotal movement of the remindd Wegsperr ein to its end position at different from the point of attack spaced pivot points. It is particularly advantageous if, starting from the back-blocking position of the release lever first rotates about a first housing-fixed pivot point and after reaching the release position to a point opposite the attack remote rotates pivot point.
  • the leverage ratio changes in the course of the pivoting movement of the release lever.
  • the essentially one-piece release lever receives a longer load arm and a shorter force arm after reaching the release position. This has the consequence that after releasing the back pressure lock by pressing the power arm is given a relation to the power arm longer displacement of the load arm.
  • Lock slide relative to the push / pull rod essentially only the restoring force of the return spring can be overcome. For this purpose, a smaller force is required, so that the lever ratios can change towards a larger displacement path of the locking slide.
  • first pivot point about which the release lever rotates to release the non-return position indirectly located next to the push / pull rod.
  • the load arm of the release lever can cross the push / pull rod and attack at the same end of the locking slide, which also acts on the return spring.
  • the second pivot point about which the release lever rotates after canceling the remindd Wegsperr ein may be formed by a bearing journal, the farther from the thrust
  • This pin can lie in a slot. In the course of the pivoting of the release lever from the reminddrücksperr ein towards the release position then moves this pin within the slot. After reaching the release position, the pin has reached an end position within the oblong hole, so that the release lever can rotate around the slot.
  • the stop may be formed by a Federsplint which rests in a broad side opening of a square cross section having push / pull rod. If the push / pull rod is displaced counter to the clamping direction when the release lever is released in the release position, the stop can enter the drive housing through the passage opening. As a result, the length of the clamping zone, so the maximum distance between the two jaws is increased.
  • the counter stop for the end stop is not formed by a housing-fixed element of the drive housing, but by the blocking element, which is preferably designed as a locking slide.
  • This embodiment proves to be advantageous in particular when the locking slide in the manner described above on the release position is also displaced to move the push / pull rod opposite to the clamping direction. If the gate valve is moved beyond the release position with the stop close to it, the push / pull rod is dragged along. A free movement of the locking slide over the push / pull rod is described in the Impact not possible. The gate valve always retains its non-return operative position in this stop position, so that the clamping operation is possible by actuating the handle and the stepping gear from the maximum remote position of the clamping jaws.
  • Figure 1 shows the drive housing with the gear cover removed in a basic position in which the return latch assumes its
  • FIG. 2 shows an illustration according to FIG. 1 with the return lock brought into release
  • FIG. 3 shows a representation according to FIG. 1 with the back-up lock placed in the pivot end position
  • FIG. 4 shows an illustration according to FIG. 1, wherein the stop lies within the drive housing and is brought against the locking slide of the reverse lock
  • Fig. 5 is a representation according to FIG. 9 of the generic DE 19861130 Al to illustrate the overall structure of the embodiment.
  • a clamp shows the figure 5.
  • the clamp has a drive housing 1, which consists of a plastic body.
  • the drive housing 1 forms two guide openings 23, 24, in which a push / pull rod 2 is inserted.
  • the push / pull rod 2 has a rectangular cross-section, so that it is non-rotatably mounted in the guide openings 23, 24.
  • the push / pull rod can be shift linearly in the direction of their extension.
  • Each end of the push / pull rod 2 has a mounting opening 29 and an end stop 22nd
  • the arranged within the drive housing 1 indexing mechanism is actuated by a handle 21, which is located next to a handle 18. If the handle 18 is gripped by a user's hand, it lies in the hollow of the hand. The fingers of the user's hand engage around the handle 21.
  • a release lever 8 located in front of the handle 21 in the direction of the handle 18 is capable of actuating a reverse lock disposed within the drive housing 1.
  • the release lever 8 can be operated by the index finger or middle finger of the handle 18 comprises holding hand.
  • Rearward of the handle 18 is located on the opposite side of the push / pull rod, a clamping zone which is located between the two clamping jaws 26, 27 arranged there.
  • the clamping jaw 26 is firmly connected to the drive housing 1.
  • the jaw 27 is firmly connected to the push / pull rod 2.
  • the step-back gear locked by the back-pressure lock is actuated such that the push / pull rod 2 is displaced in the clamping direction (S).
  • the fixedly connected to the push / pull rod 2 clamping jaw 27 displaced in the direction of the fixed to the drive housing 1 connected clamping jaw 26.
  • a workpiece, not shown, can be clamped between the clamping jaws 26, 27.
  • the indexing gear as shown in Figures 1 to 4, consists of a driving slide 3.
  • the driving slide 3 consists in the embodiment of two each provided with a rectangular window steel plates. Through the window of the steel plates, not shown, the push / pull rod protrudes.
  • the driving slide 3 is supported on a stop 31.
  • the driving slide 3 is supported on an engagement cam 20 of a drive lever 4 of the handle 21.
  • the handle 21 is mounted about a housing-fixed pivot pin 16 which passes through a bearing eye 17 of the handle 21. In the position shown in Figure 1, the push / pull rod can be moved freely through the window of the driving slide 3, not shown.
  • the load arm 8 of the release lever 8 crosses the push / pull rod 2 and engages with an am free end of the load arm 8 "arranged attack cam 19 at an attack point 11 on the locking slide 6.
  • the attack point 11 is directly adjacent to the point of the tension spring 7, but between the point of the tension spring 7 and the abutment point of the locking slide 6 on stop 32nd
  • the stop 12, on which the release lever 8 is supported in its position corresponding to the non-return position, lies directly next to the push / pull rod 2. Slightly further away from the push rod 2 and thus also more distant from the engagement cam 19, the release lever 8 has a long 15.
  • the slot 15 extends in the transverse direction to the longitudinal extent of the two-armed release lever eighth
  • the oblong hole 15 extends transversely to the extension direction of the elongated release lever 8, which projects with its lever arm 8 'a window of the housing so that it is actuated on the outside of the housing by the index finger or the middle finger of the user's hand 18 comprehensive hand can.
  • the longitudinal extent of the elongated hole 15 corresponds approximately to one and a half times the diameter of the bearing pin 14, which is inserted into housing recesses, not shown, and thus relative to the housing 1 is stationary.
  • the position of the elongated hole 15 with respect to the position of the stop 12 is selected so that the pivot point of the release lever 8 in the course of its pivotal movement, starting from the basic position shown in Figure 1 on the release position shown in Figure 2 to the in FIG shown Schwenkendwolf changes.
  • the arrangement is selected such that the release lever 8, starting from the non-return position shown in FIG. 1, first rotates about the pivot point 9 which is close to the point of engagement 11 and which corresponds to the stop 12.
  • the stop 12 is formed by a housing web.
  • the release lever 8 engages with a short load arm 8 "at the point of engagement 11 on the locking slide 6 and brings it out of the tilted position, in which it holds the push / pull rod 2 locked in the back
  • the force of the restoring spring 7 formed by the tension spring must be overcome during this displacement, in this first pivoting operation of the release lever 8 into the release position shown in FIG. in which the Verkantrial is repealed, the user is a long power arm 8 'available, so that with a higher force, the non-return position can be reversed.
  • the push / pull rod 2 can move substantially freely in both directions.
  • the pin 18 has passed through the trained as a slot bearing cavity 15 and now abuts the wall of the slot 15 and forms a pivot point 10 of the release lever 8, which is located more remote from the point of attack 11.
  • the power arm has 8 'shortened.
  • the locking slide 6 With the load arm 8 "thus extended, the locking slide 6 is then displaced further via the push / pull rod 2 with a further pivoting displacement of the release lever 8, the return spring 7 being tensioned If, starting from this end position, the release lever 8 is released, the restoring spring 7 exerts a torque on the locking slide 6.
  • the locking slide 6 now tilts against the push / pull rod 2 and can move relative to the push / pull rod 2 This has the consequence that the return spring 7, the push / pull rod 2 against the clamping direction S shifted back.
  • the push / pull rod 2 has at least at its pointing in the clamping direction S free end an end stop 22, which prevents the push / pull rod 2 can be pulled out of the drive housing 1.
  • the end stop 22 is formed by a spring-loaded pin, which fits in a wide-side opening in the push / pull rod 2.
  • the guide opening 23 pointing in the clamping direction S has a window 25 which is designed sufficiently large that the end stop 22 is guided by the guide opening. Immerse tion 23 and can enter the drive housing 1.
  • the end stop 22 can thus reach the position shown in Figure 4, in which it abuts against the gate valve 6.
  • the locking slide 6 thus forms the counter-stop for the end stop 22.
  • the frictional force exerted by the driving slide 3 in the basic position shown in FIG. 1 on the push / pull rod 2 is sufficiently great that the return actuation is possible by pivoting the release lever 8. It holds the push / pull rod 2 in position when the locking slide 6 is moved freely from the position shown in Figure 2 in the position shown in Figure 3 on the push / pull rod 2.
  • the frictional force is weaker than the tensile force of the return spring. 7

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

L'invention concerne une pince de serrage qui présente un boîtier d'entraînement (1) traversé par une tige de traction (2) qui peut être déplacée dans une direction de serrage (S) par une transmission pas à pas (3, 4, 5) et qu'on empêche de revenir dans sa position de départ par un blocage anti-retour (6, 7). Dans sa position de blocage anti-retour, le blocage anti-retour présente un élément de blocage qui agit sur la tige de traction (2) et qui, par pivotement d'un levier de libération, peut être amené dans une position de libération pour supprimer l'effet de blocage anti-retour et dans laquelle la tige de traction (2) peut être déplacée dans la direction contraire à la direction de serrage (S). Par poursuite du pivotement du levier de libération (8), l'élément de blocage (6) peut être déplacé en opposition à la contrainte d'un ressort de rappel (7) au-delà de la position de libération et jusque dans une position finale de laquelle l'élément de blocage (6) est ramené par le ressort (7) en entraînant la tige de traction (2). Le levier de libération (8) à deux bras est monté dans le boîtier d'entraînement (1) de manière à pouvoir pivoter autour d'un centre de rotation (9, 10) et présente un bras de force (8') et un bras de charge (8'') qui engage l'élément de blocage (6) en un emplacement d'engagement (11). Pour rendre l'utilisation d'un outil de type générique avantageuse, on propose que, lors du déplacement de pivotement du levier de libération (8) depuis sa position de blocage anti-retour jusque dans sa position finale (20), ce dernier tourne autour de différents centres de rotation (9, 10) situés à distance de l'emplacement d'engagement (11).
EP07727033A 2006-03-22 2007-03-19 Outil de serrage, en particulier pince de serrage, bloc de serrage ou pince d'ouverture Active EP1996370B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006013108.8A DE102006013108B4 (de) 2006-03-22 2006-03-22 Spannwerkzeug, insbesondere Spannzwinge, Spannstock oder Spreizzwinge
PCT/EP2007/052555 WO2007107537A1 (fr) 2006-03-22 2007-03-19 Outil de serrage, en particulier pince de serrage, bloc de serrage ou pince d'ouverture

Publications (2)

Publication Number Publication Date
EP1996370A1 true EP1996370A1 (fr) 2008-12-03
EP1996370B1 EP1996370B1 (fr) 2009-10-28

Family

ID=38051549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727033A Active EP1996370B1 (fr) 2006-03-22 2007-03-19 Outil de serrage, en particulier pince de serrage, bloc de serrage ou pince d'ouverture

Country Status (4)

Country Link
EP (1) EP1996370B1 (fr)
DE (2) DE102006013108B4 (fr)
ES (1) ES2331817T3 (fr)
WO (1) WO2007107537A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102926A1 (de) * 2014-03-05 2015-09-10 August Bauhuber Putzhaken
CN111571468A (zh) * 2019-02-18 2020-08-25 杭州巨星科技股份有限公司 齿式f夹
DE102020100582A1 (de) * 2020-01-13 2021-07-15 Wolfcraft Gmbh Spannwerkzeug mit Spannkraftsensor
DE102022105002A1 (de) * 2022-03-03 2023-09-07 Wolfcraft Gmbh Vorrichtung zum schrittweisen Verlagern einer Zug-/Druckstange

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731579A1 (de) * 1997-07-23 1999-01-28 Wolfcraft Gmbh Spannwerkzeug, insbesondere Spannzwinge, Spannstock oder Spanntisch
US6412767B1 (en) * 1998-03-06 2002-07-02 American Tool Companies, Inc. Clamping jaw
US6957808B2 (en) * 2001-11-13 2005-10-25 Wmh Tool Group, Inc. Apparatus for securing a workpiece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007107537A1 *

Also Published As

Publication number Publication date
WO2007107537A1 (fr) 2007-09-27
ES2331817T3 (es) 2010-01-15
DE502007001856D1 (de) 2009-12-10
EP1996370B1 (fr) 2009-10-28
DE102006013108B4 (de) 2017-06-01
DE102006013108A1 (de) 2007-09-27

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