EP0745443B1 - Mécanisme d'avance pas à pas pour pince d'expansion de chevilles murales et applications analogues - Google Patents

Mécanisme d'avance pas à pas pour pince d'expansion de chevilles murales et applications analogues Download PDF

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Publication number
EP0745443B1
EP0745443B1 EP96401108A EP96401108A EP0745443B1 EP 0745443 B1 EP0745443 B1 EP 0745443B1 EP 96401108 A EP96401108 A EP 96401108A EP 96401108 A EP96401108 A EP 96401108A EP 0745443 B1 EP0745443 B1 EP 0745443B1
Authority
EP
European Patent Office
Prior art keywords
rack
rocker
advancing mechanism
movable
lever
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
EP96401108A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0745443A1 (fr
Inventor
Roger 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
Publication of EP0745443A1 publication Critical patent/EP0745443A1/fr
Application granted granted Critical
Publication of EP0745443B1 publication Critical patent/EP0745443B1/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
    • 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
    • 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
    • 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
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears

Definitions

  • the present invention relates to a new mechanism which is intended primarily for use in clamps and the like, in which it is necessary to be able develop significant forces without requiring effort consequent manual (see for example GB-A-2 224 230).
  • the mechanism of the invention makes it possible to limit the working stroke to a precise measurement, which prevents excessive constraints from being applied to a piece of work.
  • the invention makes it possible in particular to produce pliers expansion plug for wall plug engaged in a hole of a wall behind which part of the ankle should be expanded.
  • the invention solves the problem posed and allows an implementation cheap work.
  • the step-by-step advance mechanism for wall plug expansion clamps and applications similar is characterized in that it has a hollow body associated with a fixed lever and having a hinge pin for a movable lever supporting, by an axis, a pushed pawl by a spring, said pawl comprising a cross member engaged between teeth of an inclined toothing of a rack, delimiting a second toothing with inclined teeth for a cross member supported by a rocker arm to which it applies a compression spring tending to hold said crosspiece between two teeth, said rack being guided inside the body and harnessed to a movable yoke causing expansion of an anchor in cooperation with a fixed screed connected to the body.
  • the drawing illustrates a clamp intended to cause expansion an anchor 1 of a well known type which includes a sheath 2 in which is engaged a screw 3 with head 4 which is screwed into a nut 5.
  • the pin 1 is engaged in a hole 6 drilled in a wall 7.
  • the sheath 2 is deformed as illustrated in 3a in fig. 5, which anchors it behind the wall 7 and causes it to expand against the wall of hole 6.
  • clamp which comprises a body 8 preferably of molded material either metallic, or plastic, which delimits an internal housing 9 for the mechanism described below, as well as lateral rebates 10 for the branches 11, 12 of a yoke fixed 13 which is fixed to the body 8 by an axis 14 and a spacer 15.
  • the body 8 forms or is attached to a lever 16, said to be fixed, which is provided with a handle 17.
  • the axis 14 supports on its side a lever 18, called mobile, constitutes for example by a sheet folded in a U, this lever being provided with a handle 19.
  • the handles 17, 19 can be connected by a tilting collar 20.
  • the yoke fixed 13 which is preferably metallic, from its branches 11, 12, slides 21, 22, respectively 21a, 22a, which are delimited by folds of the edges lateral.
  • the slides 21, 22, 21a, 22a are used for guiding a movable yoke 23 which has, in its front face, a slot 24 coinciding with a slot 25 of the fixed yoke 13.
  • the above slots are provided to capture the screw head 4 inside the movable yoke 23, which show fig. 4 and 5.
  • the movable yoke guided by the slides 21, 22, 21a, 22a is connected by means of a pin 26 to the end of a rack 27 with upper teeth 28 and teeth lower 29.
  • the rack 27 has, moreover, passed in a guide 30 of the body 8.
  • the teeth 28, 29 are inclined teeth, the notches 28a, 29a which they have opening towards the front part of the rack, that is to say towards the movable yoke 23.
  • a pawl 31 is articulated to the lever 18 on an axis 32 of the latter.
  • the pawl 31 has in section the shape of the letter U and supports a cross-member 33 engaged in one of the notches 29a of the toothing 29.
  • a pin spring 34 is provided to be wound as shown in the drawing on the axis 32
  • the ends of the spring 34 bear respectively against the lever 18 and against the pawl 31, which tends to cause the pawl 31 to pivot in the direction for which the cross-member 33 is applied in one of the notches 29a and to rotate the lever 18 in the direction of the arrow f 1 for which this lever is applied against the end 35a of a rocker arm 35, articulated on the axis 14.
  • the rocker arm 35 is constituted by a U-shaped fitting which carries a crosspiece 36 engaged in one of the notches 28a of the toothing 28.
  • a compression spring 37 is interposed between a stop 38 of the rack 27 and the rocker arm 35.
  • the force of the spring 37 is chosen so that it tends to pivot the rocker arm in the direction of the arrow f 2 so as to always tend to maintain the crosspiece 36 in a notch 38a; this force of the spring 37 is chosen to be higher than that which the pin spring 34 can exert on the movable lever 18 when this lever is applied by its spring 34 against the end 35a of the rocker arm 35 as illustrated in FIG. 4, that is to say when the movable lever 18 occupies a position spaced apart from the fixed lever 16.
  • the mechanism described in the above is initially in the position shown in fig. 4, that is to say that the spring 37 exerts a push on the rocker arm 35 to maintain the crossbar 36 in a notch 28a, the rocker arm also bearing against lever 18.
  • the pin spring 34 pushes the pawl 31 whose cross member 33 is located itself in a notch 39a, while the movable lever 18 is moved away from the fixed lever 16.
  • the position defined above corresponds to that for which the movable yoke 23 is pushed against the fixed yoke 13 by the spring 37.
  • the fixed screed as well as the movable screed can thus be engaged behind the screw head 4 of a dowel 1 inserted at gentle friction in a hole 6 in the wall 7.
  • the lever 18 can be released and it then pivots in the direction of the arrow f 1 under the action of the pin spring 34 until this lever comes into contact with the end 35a of the rocker arm 35 which acts as a stop, limiting the pivoting of said lever 18.
  • Each movement of the rack according to the arrow f 3 has the effect of removing the movable yoke 23 from the fixed yoke 13 and, consequently, causing the flaring of the part of the dowel 1 located behind the wall 7 at the same time that the part of the dowel which is in the hole 6 is inflated and tightened against the wall of this hole.
  • This movement has the effect of releasing the cross member 33 from the notch 29a which it occupied and thus freeing the rack 27 by allowing the spring 37 to relax to return the movable yoke 23 to its initial position illustrated in FIG. 4, which allows the extraction of the clamp and its reuse for a new work cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Ladders (AREA)
  • Ropes Or Cables (AREA)
  • Dowels (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
EP96401108A 1995-06-01 1996-05-22 Mécanisme d'avance pas à pas pour pince d'expansion de chevilles murales et applications analogues Expired - Lifetime EP0745443B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9506534A FR2734743B1 (fr) 1995-06-01 1995-06-01 Mecanisme d'avance pas a pas pour pince d'expansion de chevilles murales et applications analogues
FR9506534 1995-06-01

Publications (2)

Publication Number Publication Date
EP0745443A1 EP0745443A1 (fr) 1996-12-04
EP0745443B1 true EP0745443B1 (fr) 1999-04-28

Family

ID=9479589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401108A Expired - Lifetime EP0745443B1 (fr) 1995-06-01 1996-05-22 Mécanisme d'avance pas à pas pour pince d'expansion de chevilles murales et applications analogues

Country Status (7)

Country Link
EP (1) EP0745443B1 (es)
AT (1) ATE179350T1 (es)
DE (1) DE69602227T2 (es)
DK (1) DK0745443T3 (es)
ES (1) ES2133906T3 (es)
FR (1) FR2734743B1 (es)
GR (1) GR3030597T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3012056B1 (fr) 2013-10-21 2016-03-18 Grehal Pierre Ets Cie Sa Mecanisme de poussage pas-a-pas pour outil a main, pince a sertir munie d'un tel mecanisme et procede de sertissage
EP3284561B1 (en) * 2016-08-17 2021-09-15 Yuyao Tangwen Tool Co., Ltd. Tool for riveting nuts
CN108500192A (zh) * 2018-03-22 2018-09-07 深圳崇达多层线路板有限公司 一种印制板测试治具压制铆钉的装置及方法
WO2021109142A1 (zh) * 2019-12-06 2021-06-10 苏州斯旺西机电有限公司 一种输料机构及铆钉枪头

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906774A (en) * 1974-06-21 1975-09-23 Parker Mfg Co Rivet gun
FR2507932A1 (fr) * 1981-06-17 1982-12-24 Nihon Nejimawashi Co Ltd Riveteuse a main
GB2224230B (en) * 1988-10-27 1992-11-04 Chen Tsun Ping Expansion bolt pulling gun

Also Published As

Publication number Publication date
ES2133906T3 (es) 1999-09-16
ATE179350T1 (de) 1999-05-15
DE69602227D1 (de) 1999-06-02
DK0745443T3 (da) 1999-11-01
EP0745443A1 (fr) 1996-12-04
DE69602227T2 (de) 2000-04-13
GR3030597T3 (en) 1999-10-29
FR2734743B1 (fr) 1997-09-12
FR2734743A1 (fr) 1996-12-06

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