EP2085186A2 - Pince étau ou pince extensible - Google Patents

Pince étau ou pince extensible Download PDF

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Publication number
EP2085186A2
EP2085186A2 EP09160569A EP09160569A EP2085186A2 EP 2085186 A2 EP2085186 A2 EP 2085186A2 EP 09160569 A EP09160569 A EP 09160569A EP 09160569 A EP09160569 A EP 09160569A EP 2085186 A2 EP2085186 A2 EP 2085186A2
Authority
EP
European Patent Office
Prior art keywords
clamping
pawl
pliers
arm
slot
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.)
Ceased
Application number
EP09160569A
Other languages
German (de)
English (en)
Other versions
EP2085186A8 (fr
EP2085186A3 (fr
Inventor
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
Application filed by Wolfcraft GmbH filed Critical Wolfcraft GmbH
Priority claimed from EP03005746A external-priority patent/EP1323499B1/fr
Publication of EP2085186A2 publication Critical patent/EP2085186A2/fr
Publication of EP2085186A3 publication Critical patent/EP2085186A3/fr
Publication of EP2085186A8 publication Critical patent/EP2085186A8/fr
Ceased 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
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/14—Locking means

Definitions

  • the invention relates to a clamping or spreading forceps according to the preamble of claim 1.
  • a generic clamping or spreading forceps is from the US 4821610 known.
  • the pawl is there a simple lever.
  • the WO 98/14303 also describes a clamp. There, the two gun arms are substantially parallel to each other.
  • the clamping or spreading forceps has a dental arch strip associated with a forceps arm, in the toothing of which a pawl assigned to the grip portion of the other forceps arm engages, the first actuation of which releases the forceps arms into a ventilation position from a clamping position. Only with a second operation of the tooth mesh is canceled.
  • the forceps arch in a recess of a gun arm.
  • This is structurally such that the pliers bow strip is pinned by means of the scissors joint pin with the pliers arm and supported thereon.
  • the clamping sections of the pliers arms carry tiltable clamping jaws at the end. This allows in each spread position a two-sided plane-parallel grasping a plate-shaped object.
  • a contribution of the invention is that one pliers arm forms an opening through which the other pliers arm forms an opening through which the other pliers arm is pushed through, thereby achieving the so-called plugged joint type of the tool.
  • This solution is further characterized in that the inner, so sweeping forceps arm carries the Zangenbogenance.
  • the pawl forms an actuating section projecting into the handle section.
  • the operating portion is located in a window of the handle portion.
  • Structural and material-saving proves to be the measure that the handle portion has a U-shaped cross section, in the cavity of the pawl rotatably rests.
  • the handle portion itself has a cavity passing through the bearing axis for the pawl. It is advantageous then that the gun arms are cushioned in the spreading direction of the clamping jaws. Under release of the pawl, the clamp pliers so always jumps into its open position.
  • a measure of even independent importance further consists in that the clamping force is greater than the force required to release the pawl.
  • the spreading spring thus receives a double function; it acts as a pawl spring and as a return spring of the clamping pliers.
  • the corresponding accessibility to the pawl back is achieved in that one arm of the spreading spring dives through a slot in the dental arch.
  • the spreading spring is a torsion leg spring whose turn is tied by the Scherengelenkzapfen.
  • the pockets are accessible, so that such jaws can be replaced by means of an auxiliary tool, for example.
  • an auxiliary tool for example.
  • the clamping force is maintained by an elastic deformation of the clamping sections.
  • An advantageous development of the clamping or expanding pliers according to the invention consists in that the pawl and the actuating portion are formed in two parts. This allows the activation of the intermediate function.
  • the distance between the meshing point of pawl and toothing and bearing axis for rotatably supporting the actuating portion is shortened by a first actuation of the actuating portion such that the two clamping portions are disengaged from the clamping position in a ventilation position, wherein the tooth engagement is maintained, which repealed at a second actuation of the actuating portion becomes.
  • the second operation is no longer done against the clamping force of the tool.
  • the first operation requires significantly reduced release force; Unlocking turns out to be "softer".
  • pawl and actuating portion pivot against each other during the first operation and move.
  • the displacement is made possible by a longitudinal pin of the pawl engaged by the bearing pin.
  • the further means are characterized by a the actuating portion associated, engaging in an angular slot of the pawl Ausgurzapfen which engages in the clamping position assigned position in a substantially transverse to the line connecting tooth engagement point and bearing pin first slot portion and which Ausgurzapfen in the ventilation position assigned position in a substantially parallel to the connecting line extending second slot section occurs.
  • the illustrated clamping forceps 1 is created in Scherengeschart, but with the formation of a so-called inserted joint.
  • the pliers arms 4, 5 are made of plastic. They are produced in a material-saving cross-sectional shape, that is preferably hollowed open mouth and gusset side.
  • the tong arm 4 forms a handle portion 6 serving for the grip operation and has a clamping portion 7 which brings about the grasping of an object.
  • the gripped tongs arm 5 has a corresponding handle portion 8 and a clamping portion 9.
  • the gripped tongs arm 5 takes a directional offset of the sections 6-9 instead, this such that the pliers arms 4, 5 practically form a Z-shaped floor plan. This leads to a significant broadening between the alternating parts of the gun arms 4, 5.
  • the forceps arms 4, 5 can be locked in a clamping position. This applies both to the maximum closed position of the forceps jaw 10 of the clamping forceps 1 and intermediate positions to the maximum stop-defined spread position of the mouth-side clamping sections 7, 9. For this purpose locking a toothed arch strip 11. Their teeth 12 is sawtooth. The arc is about a radius R, whose radius point is the geometric axis of the scissors-hinge pin 2.
  • the dental arch strip 11 is associated with a pincer arm 4. It can be integrally formed. Preferably, however, the procedure is such that the dental arch strip 11 is made of a harder plastic than that of the forceps arms 4, 5. In such a case, the multi-part structure is preferred.
  • a pawl 13 cooperates.
  • The is protected in the region of the handle portion 8 of the gripped tongs arm 5, yet accommodated comfortably accessible to operate.
  • the pawl 13 has the corresponding counter-toothing 14. Both the steep flank of the toothing 12 and the counter-toothing 14 is directed to the radius point of the scissors-hinge pin 2.
  • the respective tooth back shows the apparent from the representation sawtooth typical slope.
  • the Zangenbogenance 11 is located in a recess near the recess 15 of the pincers arm 4.
  • the segmental bar is such an outline that their bondage can be effected by the already present Scherengelenk-pin 2, which thus the Zangenbogenance 11 with the pincer arm 4 pinned.
  • the pliers bow strip 11 has to a congruent to the eye 3 lying eye.
  • the recess 15 is further from such a contour that the segment-shaped Zangenbogenance 11 is also supported on both sides of the plane of rotation of the scissors joint. She is literally drowned. The whole thing is still occupied by wall sections of the sweeping tong arm 4 and still by those of the gun arm 5, the opening for the passage of the tong arm 4 serving the reference numeral 16 carries.
  • the pawl 13 is placed at the commercial end of the handle portion 8 so that an actuating portion 17 protrudes laterally accessible from the outside. It is like a pushbutton. The lies in the region of a trough 18. The latter is located on the outside of the handle portion 8 and acts as a tactile target for the exercise. The whole thing is in the grip range of the hand, and so easy to reach.
  • the pawl 13 forms with the addition of the actuating portion 17 a double lever, pivotally mounted about an axis 19 in the interior of the hollow handle portion 8.
  • the axis 19 is gape-side behind a window 20 of said handle portion 8.
  • the latter is located in the U-web of the cross section U -shaped, a cavity 21 leaving the handle portion 8.
  • the pawl 13 is at a lower window portion its actuating end stop. The tilt angle of the rocker-like pawl 13 is adjusted to the depth of the teeth.
  • the pawl 13 is almost double-tailed.
  • the two tails 22 and 23 point in the direction of the end of the handle and leave between them a storage trough 24. This overlaps, as it were Lagerbautonedend more than half of the shell wall of the cylindrical axis 19. This justifies a bondage. Further securing means can be omitted.
  • This tail 23 of the pawl 13 is in fact loaded by an arm 25 of a spreading spring 26.
  • the load is in the sense of ratchet engagement of the pawl 13 to the teeth 12 out.
  • the other arm 27 of the spreading leg spring realized as a torsion spring loads the penetrating tong arm 4, more precisely the end region of the handle section 6 which is near the working side.
  • the spreading spring 26 has a bias and acts on the clamping portions 7, 9 of the clamping jaw 1, that the gun arms 4, 5 are loaded in the spreading direction of the clamping jaws 28.
  • the binding of the spreading spring 26 is done using the Windungshöhlung the winding 29 of the torsion leg spring. This cavity passes through the scissors-hinge pin 2 of the industry G.
  • the dental arch strip 11 is slotted to accommodate the winding 29 and extending in the direction of the pawl 13 arm 25.
  • the slot of the curved strip 11 bears the reference numeral 30.
  • Also with respect to the tail 23 is a directionally subsequent slotting as a positional securing of the arm 25 is realized.
  • the clamping jaws 28 are associated with the clamping sections 7, 9 articulated.
  • the corresponding geometric axes extend in parallel to the scissors joint pin 2.
  • In the bearing axles 32 aretientschnäppert.
  • the eyes are preceded by corresponding finding slots.
  • About this bearing axles 32 of the clamping jaws 28 can comfortably captivate.
  • the bearing pockets are formed so that an access remains for the attachment of a release tool, so that the clamping jaws 28 are interchangeable.
  • the function of the clamping tongs 1 is as follows: starting from the in Fig. 2 illustrated stop limited Sp Dr Drish too the gun arms 4, 5 can be the mouth 10 zoom under detection of an object. This is done by zwickel dealt outetes pressing together the handle portions 6 and 8 against the action of the spreading spring 26.
  • the oppositely directed flat sides of the clamping jaws 28 can move to a example. Plate-shaped object, pivoting about the bearing shafts 32, in a whopping plant to move. Then the clamping pressure is exerted. The clamping jaw 1 then holds itself to the object. The clamping force is maintained by an elastic deformation of the clamping sections 7, 9.
  • the clamping surfaces of the clamping jaws 28 may also be profiled. Shown is a symmetrical square cross-sectional profile 33 in the form of proportionate V-grooves, which are transverse to the pivot plane of the gun arms 4, 5. In order to still ensure the necessary resilience of the gun arms 4, 5, whose U-profile cross-section is reinforced by an outgoing from the U-bottom longitudinal ridge 34.
  • the spreading spring 26 serves both as a return spring of the clamping tongs 1 and to load the pawl 13 in the direction of engagement.
  • clamping tongs 1 are brought into a space-saving storage or packaging position, only the grip portions 8, 9 need to be moved against each other.
  • the pawl 13 ratchets while the teeth 12 of the dental arch strip 11. It is then a self-locking closed position, which can be canceled in the manner described above by pressing the button 17 again.
  • the actuating portion 17 and the actuating pawl 13 is expediently colored striking.
  • the clamping or spreading forceps according to the second embodiment ( Fig. 9 ff.) Is up to a particular embodiment of the functional parts pawl / operating section 13/17 in principle the same structure.
  • the reference numbers are applied analogously, in part without textual repetitions.
  • the acting as a pan push button actuating portion 17 is seated on the rotatable mounting of the actuating portion performing axis, on Also referred to as a bearing pin 19 in the pliers arm 5.
  • a projecting from the pawl 13 pawl cock 35 is tied up over the bearing pin 19.
  • Said pawl cock 35 has for this purpose an opening in the form of a longitudinal slot 36. The latter allows a limited displacement of the pawl 13 relative to the pin.
  • the longitudinal slot 36 extends directionally substantially tangentially, but spaced from the dental arch strip 11 of the gun arm. 4
  • a second, the locking pawl 13 closer bondage of the pawl tail 35 is given in the form of an angular slot 37.
  • This slot 37 is located between the longitudinal slot 36 and a neck 38 of the pawl 13.
  • the plate-shaped pawl tail 35 has the required width.
  • angular slot 37 to a heart-shaped opening.
  • This is rectangular and has a first slot portion 37 '.
  • The is roughly aligned on the scissors hinge pin 2 and extends in clamping position of the clamping jaw 1 transversely to a connecting line x-x between Zahneingriffstician 39 of the pawl 13 and the bearing pin 19.
  • His pawl head side flank F is undercut. It is slightly below 90 ° to the line x-x.
  • the second slot portion 37 "extends in the said position in a direction of extension substantially parallel to said connecting line x-x.
  • a Ausschzapfen 40 serves as a tethering means to the actuating portion 17.
  • the second slot section 37 "extends in the same direction as the longitudinal slot 36.
  • the axial length of the release pin 40 essentially corresponds to the thickness of the likewise plate-shaped actuating section 17.
  • the actuating section 17 each has a bearing eye 41
  • the actuating portion 17 is provided with a receiving shaft 42 which is dimensioned according to the movement requirement of the pawl cock 35 guided therein and is widened recognizable end.
  • Longitudinal slot 34 and angular slot 37 allow that pawl 13 and actuating portion 17 pivot and move against each other at the first actuation in clamping position.
  • the pivoting happens primarily. This operation causes the distance between the tooth engagement point 39 of the pawl 13 and the teeth 12 and the bearing axis 19 through a first actuation of the actuating portion 17 is shortened such that the two clamping portions 7, 9 from the clamping position (see. Fig. 12 and 15 ) in a ventilation position (see. Fig. 13 and 17 ) are disengaged. It remains, how Fig. 17 removable, the tooth engagement between the teeth 12 of the dental arch strip 11 and the counter teeth 14 of the pawl 13 are obtained.
  • The is located in the clamping position associated position in the substantially transverse to the line xx of Tooth engagement point 39 and journal 19 extending first slot portion 37 'in locking engagement, supported by the flank F, and in the ventilation position associated position in the substantially parallel to the connecting line xx extending second slot portion 37 " Fig. 16 illustrated intermediate position in which the flank support of the slot portion 37 'comes to an end.
  • the disengagement pin 40 travels over the apex zone into the other, second slot section 37 "or the pawl tail 35 overflows this shift.This shift occurs without pivoting with respect to the actuating section 17 according to the same direction of slot section 37" and longitudinal slot 36.
  • the slot longitudinal axes can even be coaxial be aligned.
  • the tooth engagement is limited there on the uppermost end tooth and possibly partial engagement of the next tooth. This position can be easily released; namely, there is a multiple entanglement according sawtooth-like structure at full locking engagement of the teeth.
  • the locking edges of the teeth and gullets provide so before unlocking always first a short tighter clamping. Recognizable is according to Fig. 17 the lower end tooth of the counter teeth 14 of the pawl and a large part of the next following teeth already out of engagement with the teeth 12th

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)
EP09160569A 1999-02-11 2000-01-26 Pince étau ou pince extensible Ceased EP2085186A3 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19905594 1999-02-11
DE19933033.6A DE19933033B4 (de) 1999-02-11 1999-07-15 Klemm- oder Spreizzange
EP03005746A EP1323499B1 (fr) 1999-02-11 2000-01-26 Pince étau ou pince extensible
EP00903630A EP1150804B8 (fr) 1999-02-11 2000-01-26 Pince etau ou pince extensible
EP02004045A EP1236543B1 (fr) 1999-02-11 2000-01-26 Pince étau ou pince extensible

Related Parent Applications (4)

Application Number Title Priority Date Filing Date
EP03005746A Division EP1323499B1 (fr) 1999-02-11 2000-01-26 Pince étau ou pince extensible
EP00903630.2 Division 2000-01-26
EP02004045.7 Division 2002-02-23
EP03005746.7 Division 2003-03-14

Publications (3)

Publication Number Publication Date
EP2085186A2 true EP2085186A2 (fr) 2009-08-05
EP2085186A3 EP2085186A3 (fr) 2009-08-12
EP2085186A8 EP2085186A8 (fr) 2010-06-02

Family

ID=7897100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09160569A Ceased EP2085186A3 (fr) 1999-02-11 2000-01-26 Pince étau ou pince extensible

Country Status (4)

Country Link
EP (1) EP2085186A3 (fr)
AT (1) ATE447464T1 (fr)
DE (2) DE19933033B4 (fr)
ES (1) ES2332214T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001839A1 (fr) * 2012-06-26 2014-01-03 St Gelais Dan Pince d'extraction de calotte d'écrou de roue
CN106491214A (zh) * 2016-12-15 2017-03-15 吉林大学 一种调节式医用乳突扩张器
CN110000730A (zh) * 2019-05-06 2019-07-12 贵州电网有限责任公司 一种防滑扳手
CN115805563A (zh) * 2022-11-30 2023-03-17 重庆长安新能源汽车科技有限公司 弹簧压缩装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10129130A1 (de) * 2001-06-16 2003-01-09 Wolfcraft Gmbh Klemm- oder Spreizzange
ITUB20156283A1 (it) 2015-12-03 2017-06-03 Cmfima S R L Gruppo di incarto
CN108312083B (zh) * 2018-02-06 2019-11-15 胶州市光明电力服务有限责任公司 一种电力检修用液压钳

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454917A (en) 1922-09-11 1923-05-15 Leon J Barrett Pruning shears
US1978543A (en) 1934-02-24 1934-10-30 K D Mfg Co Locking means
US3013456A (en) 1959-09-29 1961-12-19 Ericson Alf Ernferd Plier with locking feature on pawl
FR1347377A (fr) 1963-01-16 1963-12-27 Metallurg Du Cret De Roc Atel Pince de préhension à serrage intérieur, pour tubes et autres organes creux
GB1056176A (en) 1962-10-08 1967-01-25 Baudat A G Cable and bar cutter
US4062218A (en) 1975-10-15 1977-12-13 Pressmaster Ab Cutting or pressing appliances
US4821610A (en) 1987-08-20 1989-04-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Self-locking clamping tool with swivel jaws
WO1998014303A1 (fr) 1996-09-30 1998-04-09 Ilmberger Maschinen- Und Zahnradfabrik Gmbh Procede et dispositif pour le traitement de pieces, et poste de reception de pieces pour un tel dispositif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750826A (en) 1956-06-19 pliers
US1052982A (en) 1912-06-26 1913-02-11 Julius Sturtevant Tool.
US1616621A (en) 1925-03-14 1927-02-08 William N Hooks Piston-ring remover
US3262342A (en) * 1964-07-31 1966-07-26 Sargent & Co Motion-compelling mechanism for a hand tool incorporating stop means
SE9603581L (sv) * 1996-10-01 1998-04-02 Fast Industriprodukter Hb Låsanordning till handverktyg

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454917A (en) 1922-09-11 1923-05-15 Leon J Barrett Pruning shears
US1978543A (en) 1934-02-24 1934-10-30 K D Mfg Co Locking means
US3013456A (en) 1959-09-29 1961-12-19 Ericson Alf Ernferd Plier with locking feature on pawl
GB1056176A (en) 1962-10-08 1967-01-25 Baudat A G Cable and bar cutter
FR1347377A (fr) 1963-01-16 1963-12-27 Metallurg Du Cret De Roc Atel Pince de préhension à serrage intérieur, pour tubes et autres organes creux
US4062218A (en) 1975-10-15 1977-12-13 Pressmaster Ab Cutting or pressing appliances
US4821610A (en) 1987-08-20 1989-04-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Self-locking clamping tool with swivel jaws
WO1998014303A1 (fr) 1996-09-30 1998-04-09 Ilmberger Maschinen- Und Zahnradfabrik Gmbh Procede et dispositif pour le traitement de pieces, et poste de reception de pieces pour un tel dispositif

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DURCH KATALOG GÖDDE, 1989, pages 531

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001839A1 (fr) * 2012-06-26 2014-01-03 St Gelais Dan Pince d'extraction de calotte d'écrou de roue
CN106491214A (zh) * 2016-12-15 2017-03-15 吉林大学 一种调节式医用乳突扩张器
CN106491214B (zh) * 2016-12-15 2023-08-01 吉林大学 一种调节式医用乳突扩张器
CN110000730A (zh) * 2019-05-06 2019-07-12 贵州电网有限责任公司 一种防滑扳手
CN110000730B (zh) * 2019-05-06 2024-03-01 贵州电网有限责任公司 一种防滑扳手
CN115805563A (zh) * 2022-11-30 2023-03-17 重庆长安新能源汽车科技有限公司 弹簧压缩装置

Also Published As

Publication number Publication date
DE50015783D1 (de) 2009-12-17
ATE447464T1 (de) 2009-11-15
EP2085186A8 (fr) 2010-06-02
ES2332214T3 (es) 2010-01-29
DE19933033B4 (de) 2019-03-21
DE19933033A1 (de) 2000-08-17
EP2085186A3 (fr) 2009-08-12

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