EP0159255A1 - Zange, zum Einsetzen von spreizbaren Dübeln, mit zwei schwenkbaren Schenkeln - Google Patents

Zange, zum Einsetzen von spreizbaren Dübeln, mit zwei schwenkbaren Schenkeln Download PDF

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Publication number
EP0159255A1
EP0159255A1 EP85400614A EP85400614A EP0159255A1 EP 0159255 A1 EP0159255 A1 EP 0159255A1 EP 85400614 A EP85400614 A EP 85400614A EP 85400614 A EP85400614 A EP 85400614A EP 0159255 A1 EP0159255 A1 EP 0159255A1
Authority
EP
European Patent Office
Prior art keywords
arm
sole
axis
arms
fulcrum
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
EP85400614A
Other languages
English (en)
French (fr)
Other versions
EP0159255B1 (de
Inventor
Roger M. Malagnoux
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.)
Pierre Grehal et Cie SA
Original Assignee
Pierre Grehal et Cie SA
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 Pierre Grehal et Cie SA filed Critical Pierre Grehal et Cie SA
Priority to AT85400614T priority Critical patent/ATE30862T1/de
Publication of EP0159255A1 publication Critical patent/EP0159255A1/de
Application granted granted Critical
Publication of EP0159255B1 publication Critical patent/EP0159255B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/386—Pliers for riveting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
    • 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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners

Definitions

  • the present invention relates to a new clamp for laying expansion plugs.
  • Metal expansion plugs are more and more used in the building technique because they allow solid fastenings in fragile or brittle plates or walls, for example in composite panels, plaster foams of plastic material, in walls and partitions in hollow bricks as well as in other materials in which it is essential to distribute the stresses.
  • the expansion plugs that are found on the market generally include two sockets joined by longitudinal elements which must be caused to flame at the rear of the panel covering which has to support the ankle.
  • the initial deformation that is to say the initiation of buckling of the ankle, requires the application of considerable force while the subsequent flexion of the ankle no longer requires the application of great force but involves a important working stroke.
  • the invention solves this problem by creating a new clamp which makes it possible, for the above application, to exert first of all a very large force then then a substantially weaker force but over a large stroke, which allows the expansion of the wall plugs in a simple and fast way.
  • the object of the invention is to create a clamp which is simple to make, very effective and which does not risk damaging the ankle when it is expanded or the screw which must be able to be screwed and unscrewed as many times as may be necessary afterwards. the installation of the ankle.
  • the pliers for installing the expansion anchors comprising two articulated arms, one of the arms leading to a support sole and the other arm causing the lifting of an expansion anchor screw is characterized in that the second arm has two successive support points, the first support point giving rise to a large ratio of the lever arms to cause the initiation of the buckling of the expansion ankle while the second support point gives rise to a smaller ratio of the lever arms to increase the deformation stroke of the expanding anchor.
  • Fig. 1 is a side elevation partly in section of a clamp according to the invention.
  • Fig. 2 is a partial section of an embodiment detail of the clamp of FIG. 1.
  • Fig. 3 is a top view corresponding to FIG. 1.
  • Fig. 4 is a partial section of the clamp of FIG. 1 illustrating a characteristic operating position.
  • Fig. 5 is a section similar to FIG. 4 illustrating another characteristic operating position.
  • Fig. 6 is an elevation partly in section of a first variant.
  • Fig. 7 is a section seen along the line VII-VII of FIG. 6.
  • Fig. 8 is a section seen along line VIII-VIII of FIG. 6.
  • Figs. 9 and 9a are elevations partly in section of a second variant according to two embodiments.
  • Fig. 10 is a top view corresponding to FIG. 9.
  • Figs. 11 and 12 are partial sectional elevations, illustrating two characteristic positions.
  • Fig. 13 is an elevation of another variant.
  • the pliers according to fig. 1 to 5 comprises a flat sole 1 in which is made a notch 2, preferably slightly V-shaped which opens for example towards the front.
  • the sole 1 connects two cheeks 3, 4 extended by wings 5, 6.
  • the wings 5, 6 delimit with the cheeks 3, 4 shoulders 7, 8 (fig. 3) against which abut the sides 9, 10 of an arm 11 consisting of a U-shaped profile advantageously forming corrugations 12 near its rear part visible to the left of FIG. 1.
  • the wings 5, 6 of the cheeks 3, 4 are held between the sides 9, 10 of the arm 11 by an axis 13.
  • the clamp has a second arm 14, also in the shape of a U, this second arm forming or supporting at its rear part a handle 15.
  • the second arm is engaged by its front end between the cheeks 3, 4 and it supports by lateral sides 16, 17 of the axes 18, 19.
  • the axes 18, 19 pass through elongated slots 20, 21 which are formed in the cheeks 3, 4.
  • the slots 21 are of greater length than the slots 20.
  • the drawing shows that the lateral sides 16, 17 of the second arm 14 define a notch 22 whose width is substantially greater than the diameter of the axis 13.
  • the axis 19 which has passed through the slots 21 supports a stirrup 23 engaged between the cheeks 3, 4 and having a bottom 24 in which a notch 25 is formed coinciding with the notch 2 of the sole 1.
  • a hairpin spring 26 is wound on the axis 13 and tends by its two branches to spread the arms 11, 14 so as to hold the bottom 24 of the stirrup 23 against the top of the sole 1.
  • the construction method described above allows the bottom as well as the cheeks 3, 4 and their wings 5, 6 to be made of very resistant metal, for example made of treated steel, while the arms 11, 14 can be made more economically by mild steel or other metal.
  • the handle 15 may be metallic or preferably constituted by a plastic sheath delimiting a stop 15a. Although it is not essential, it is nevertheless advantageous, as illustrated in fig. 1, to provide a pivoting stand 27 forming a lock and articulated on an axis 28 passed through the arm 11 at its rear end.
  • the crutch 26 is provided with a sole 29 and its length is chosen so that the sole 29 is in the same plane as the sole 1 when said latch is pivoted to be brought into the position for which it is shown in solid lines in fig. 1.
  • the drawing represents a plate 30 behind which an expansion plug 31 must be deformed which contains a screw 32 to firstly ensure its expansion and then the fixing of any object on the plate 30.
  • the screw 32 protrudes slightly beyond the plate 30 and it is possible to bring it into the bottom of the notches 2 and 25, the bottom 24 of the stirrup 23 then taking support under the head 33 of the screw .
  • the axes 18 and 19 carried by the second arm 14 are located in the bottom of the slots 20, 21 and the axis 13 is held in the lower part of the notch 22 by the pin spring 26.
  • the drawing shows that the arm 11 is held by the latch 26 in a position for which the sole 1 is applied flat on the top of the plate 30.
  • the axis 18 By acting on the handle 15, in the direction of the arrow f1, the axis 18 is supported in the bottom of the slots 20, thus constituting a first pivot axis of the second arm 14.
  • the distance separating the axis 18 from the axis 19 being weak, the second arm 14 constitutes a lever with a large ratio of arms of the levers and, consequently, the force exerted on the handle 15 is considerably amplified.
  • This effort has the effect of lifting the axis 19 which drives the stirrup 23 by producing the buckling of the expansion pin 31 which is gradually deformed, as illustrated in FIG. 4.
  • Fig. 6 illustrates a variant in which the cheeks 3, 4 and the sole 1 are directly formed by the first arm 11 which is made, for example, of steel by cutting and stamping a metal plate, the sole 1 and a sole 29a ensuring the junction of the sides 9, 10 and the cheeks 3, 4 described above.
  • the second arm 14 controls the stirrup 23 by the axes 18, 19 as well as by the axis 13. This embodiment allows manufacturing at a lower cost due to the simplification.
  • Figs. 9 to 12 illustrate a variant according to which the first arm 10 constituted by a U-folded fitting forms at its front part cheeks 3a projecting from a flat sole la.
  • the cheeks support an axis 13a on which is wound the pin spring 26 which tends, as in the previous examples, to keep apart the first arm 10 from a second arm 14 which, in this embodiment, defines a notch 22 1 opening towards the top.
  • the second arm 14 supports an axis 19a which can be moved in slots 21a in the cheeks 3a of the first arm.
  • the second arm 14 is also made from a sheet bent in a U and this sheet is shaped at its front part to present in its bottom two curvatures 34 and 35, the curvature 34 being situated between the axis 19a and the axis 13a while the curvature 35 is located beyond the axis 13a relative to the end of the first and second arms which have notches 2 1 and 36 which coincide with each other.
  • the second arm 14 When the second arm 14 is pivoted relative to the first arm 10, the second arm first pivots around the curvature 34, that is to say that the ratio of the lever arms is very large, as described above, which makes it possible to initiate the buckling of the expanding anchor.
  • the axis 19a moves in the slots 21a.
  • Fig. 9a illustrates a development according to which the first and second arms 10 and 14 are provided with handles 40, 41 made of relatively flexible material, for example plastic material, which create an additional thickness and, consequently, reduce the space 42 between the two handles .
  • the space 42 could not be increased to allow the grip of the handles in the same hand and the useful stroke of the clamp not having to be reduced, a boss 43 turned towards the second arm is formed in the first arm.
  • this second arm comes to bear on the boss 43, which increases the useful stroke of the clamp.
  • Fig. 13 illustrates a variant in which the arrangement is similar to that described above with reference to FIGS. 9 to 12.
  • the axis 19a is provided with a stirrup 23 identical to that of the embodiment of FIGS. 1 to 5 and the second arm 14 is also provided with an axis 18 similar to that of FIGS. 1 to 5.
  • the second arm 14 only has the curvature 35 which constitutes the second fulcrum causing a large stroke, as described with reference to FIGS. 9 to 12, the first fulcrum causing the initiation of buckling of the ankle being provided by the axis 18, exactly as described with reference to FIGS. 1 to 5.
  • Fig. 13 shows that the first arm 10 can be provided with a crutch and a support sole 29a, like the embodiment of FIG. 6.
  • the support sole 29a formed from the fixed stand 37 can obviously be articulated if desired in the same way as it appears in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Fishing Rods (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Mechanically-Actuated Valves (AREA)
EP85400614A 1984-03-29 1985-03-28 Zange, zum Einsetzen von spreizbaren Dübeln, mit zwei schwenkbaren Schenkeln Expired EP0159255B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400614T ATE30862T1 (de) 1984-03-29 1985-03-28 Zange, zum einsetzen von spreizbaren duebeln, mit zwei schwenkbaren schenkeln.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404927A FR2561971B1 (fr) 1984-03-29 1984-03-29 Pince pour la pose de chevilles a expansion comportant deux bras articules
FR8404927 1984-03-29

Publications (2)

Publication Number Publication Date
EP0159255A1 true EP0159255A1 (de) 1985-10-23
EP0159255B1 EP0159255B1 (de) 1987-11-19

Family

ID=9302600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400614A Expired EP0159255B1 (de) 1984-03-29 1985-03-28 Zange, zum Einsetzen von spreizbaren Dübeln, mit zwei schwenkbaren Schenkeln

Country Status (5)

Country Link
US (1) US4625538A (de)
EP (1) EP0159255B1 (de)
AT (1) ATE30862T1 (de)
DE (1) DE3560986D1 (de)
FR (1) FR2561971B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0494747A1 (de) * 1991-01-11 1992-07-15 Emhart Inc. Blindnietmutter mit Ziehdorn
EP0922536A1 (de) * 1997-12-12 1999-06-16 Herbert Schruff Verfahren und Gerät zum Setzen von Blindnietmuttern
FR2801527A1 (fr) * 1999-11-30 2001-06-01 Black & Decker Inc Pince de pose d'un dispositif d'ancrage tel qu'une cheville metallique a expansion ou analogue
FR2924969A1 (fr) * 2007-12-17 2009-06-19 Prospection Et D Inventsions T Pince pour pose de cheville d'ancrage a douille retractable et compressible

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5050420A (en) * 1990-08-29 1991-09-24 Liu Yang Ting Multi-functional riveter
US5295290A (en) * 1992-07-14 1994-03-22 One Twelve, Inc. Adapter for plastic blind fastener tool
CA2414519A1 (en) * 2001-12-20 2003-06-20 Ipl Inc. Method and apparatus to deform a plastic rivet
US7189243B1 (en) 2004-03-31 2007-03-13 Howmedica Osteonics Corp. Orthopaedic fixation pin extraction
NO346511B1 (en) * 2021-06-09 2022-09-12 Tor Korshamn Tool for fastening and releasing a wall anchor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831424A (en) * 1973-02-24 1974-08-27 Usm Corp Pliers type blind riveting tool
FR2343564A1 (fr) * 1976-03-11 1977-10-07 Brendle Robert Outil de mise en place de cheville taraudee
FR2354853A1 (fr) * 1976-06-17 1978-01-13 Futters London Ltd Outil pour la mise en place de chevilles expansives

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329562A (en) * 1941-12-29 1943-09-14 Arthur J Hilpert Insulator remover
US2530215A (en) * 1947-12-01 1950-11-14 Zidar Anton Upstanding handle for floor shears
US3324700A (en) * 1964-09-21 1967-06-13 United Shoe Machinery Corp Pulling chuck for rivet setting tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831424A (en) * 1973-02-24 1974-08-27 Usm Corp Pliers type blind riveting tool
FR2343564A1 (fr) * 1976-03-11 1977-10-07 Brendle Robert Outil de mise en place de cheville taraudee
FR2354853A1 (fr) * 1976-06-17 1978-01-13 Futters London Ltd Outil pour la mise en place de chevilles expansives

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0494747A1 (de) * 1991-01-11 1992-07-15 Emhart Inc. Blindnietmutter mit Ziehdorn
EP0922536A1 (de) * 1997-12-12 1999-06-16 Herbert Schruff Verfahren und Gerät zum Setzen von Blindnietmuttern
US6029332A (en) * 1997-12-12 2000-02-29 Schruff; Herbert Rivet setting tool
US6223409B1 (en) 1997-12-12 2001-05-01 Herbert Schruff Rivet setting tool
FR2801527A1 (fr) * 1999-11-30 2001-06-01 Black & Decker Inc Pince de pose d'un dispositif d'ancrage tel qu'une cheville metallique a expansion ou analogue
EP1106306A1 (de) * 1999-11-30 2001-06-13 Black & Decker Inc. Setzgerät für Spreiz-Maueranker
US6474129B1 (en) 1999-11-30 2002-11-05 Black & Decker Inc. Setting tool for expanding wall anchors
FR2924969A1 (fr) * 2007-12-17 2009-06-19 Prospection Et D Inventsions T Pince pour pose de cheville d'ancrage a douille retractable et compressible

Also Published As

Publication number Publication date
FR2561971A1 (fr) 1985-10-04
EP0159255B1 (de) 1987-11-19
DE3560986D1 (en) 1987-12-23
FR2561971B1 (fr) 1988-10-07
ATE30862T1 (de) 1987-12-15
US4625538A (en) 1986-12-02

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