EP0444372A1 - Elastische Verbindung für zwei oszillierende Teile, insbesondere Scherenschenkel - Google Patents

Elastische Verbindung für zwei oszillierende Teile, insbesondere Scherenschenkel Download PDF

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Publication number
EP0444372A1
EP0444372A1 EP90420104A EP90420104A EP0444372A1 EP 0444372 A1 EP0444372 A1 EP 0444372A1 EP 90420104 A EP90420104 A EP 90420104A EP 90420104 A EP90420104 A EP 90420104A EP 0444372 A1 EP0444372 A1 EP 0444372A1
Authority
EP
European Patent Office
Prior art keywords
bore
well
elements
axle
blades
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.)
Withdrawn
Application number
EP90420104A
Other languages
English (en)
French (fr)
Inventor
Louis Cau
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.)
Locau International SA
Original Assignee
Locau International 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 Locau International SA filed Critical Locau International SA
Publication of EP0444372A1 publication Critical patent/EP0444372A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/28—Joints

Definitions

  • the scissor blades are fixed by a shouldered screw, the threaded part of which is screwed with locking in a tapping of one of the blades and the shouldered part of which is housed, with functional play, in an appropriate bore of the other blade. wedged in translation by the head of said screw.
  • This mode of articulation is not suitable for scissors made of synthetic material because the coefficient of friction of this material is low and promotes loosening of the screw.
  • the installation of a screw requires a mounting operation increasing the cost of the final product even when the use of plastic blades is intended to provide an inexpensive article.
  • the patent US 4007524 describes a permanent connection mode between the two blades of a plastic scissor consisting in riveting the end of an axis in the form of a split well projecting from one of the blades and engaged in the bore of the other blade.
  • This technique has the drawback, due to manufacturing tolerances, of not controlling the tightening of the two blades, and subsequently of not allowing the adjustment of this tightening to compensate for operating wear, so that the chisel cuts less less over time.
  • the present invention aims to remedy this by providing a means of assembling two oscillating elements which, applicable in particular to the articulation of the chisel blades, which is inexpensive, results in a very reduced assembly time, ensures a reliable connection and allows adjustment, during assembly and over time, of the tightening of the two elements.
  • the axis cooperates with a locking finger, the rod of which is capable of being engaged with clamping in the bore of the shaft in the form of a well and whose head has the shape of a cup, with concavity turned in the direction of the rod, and has a circular edge of diameter greater than that outside of the collar, this edge constituting means of wedging in axial translation of the two elements and member for adjusting the friction of these last, coming into contact with the articulated element.
  • this wedging is elastic and guarantees the connection and sufficient tightening of the two elements whatever the inevitable dimensional variations following the manufacturing tolerances, and in particular of molding, of the two parts.
  • FIG. 1 designates a chisel composed of two blades 2 and 3 obtained by molding a synthetic material.
  • the blade 2 is integral with a projecting articulation axis 4 having the general shape of a well, that is to say comprising an axial bore 5 passing right through it.
  • the axis 4 is secured at its free end to an external flange 6. It has, in its part projecting from the blade 2, longitudinal slots 7 opening into the bore 5. These slots, two to eight in number, allow the walls of the shaft constituting the well to deform during its engagement in the bore 8, formed in the blade 3 and which may include a chamfer 3a (FIG. 3) to promote this engagement.
  • connection of the blades 2 and 3 is terminated by introducing a locking finger 9 into the bore 5 of the well.
  • the cylindrical rod 9a of this finger is force fitted into the bore 5 so as to oppose any radial retraction of the split well.
  • Its head 9b has the general shape of a cup whose concavity is turned towards the side of the rod 9a.
  • the edge of this cup is arranged to form a circular edge 10 having a diameter larger than that of the collar 6, so that in the locking position by the finger 9, said edge bears on the external face of the blade 3, as shown in Figure 4.
  • the locking finger helps to wedge in translation the blade 3 relative to the blade 2 while communicating to these two blades, a transverse tightening elastic to compensate for manufacturing tolerances and to obtain, over time, satisfactory operation of the chisel.
  • the head 9b also constitutes an embellishment and can have any hollow or raised patterns giving it the shape of a screw head or the like.
  • Such an assembly means which has been described above in the context of its application to the connection of two blades of a chisel, can also be used to ensure the connection of all oscillating elements which can be assembled in pairs.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
EP90420104A 1988-12-07 1990-02-27 Elastische Verbindung für zwei oszillierende Teile, insbesondere Scherenschenkel Withdrawn EP0444372A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8816495A FR2639861B1 (fr) 1988-12-07 1988-12-07 Moyens d'assemblage de deux elements oscillants et en particulier des lames d'un ciseau

Publications (1)

Publication Number Publication Date
EP0444372A1 true EP0444372A1 (de) 1991-09-04

Family

ID=9372953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420104A Withdrawn EP0444372A1 (de) 1988-12-07 1990-02-27 Elastische Verbindung für zwei oszillierende Teile, insbesondere Scherenschenkel

Country Status (2)

Country Link
EP (1) EP0444372A1 (de)
FR (1) FR2639861B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631718A1 (de) * 1993-06-29 1995-01-04 Fiskars Inc. Elastische Verriegelung für Handwerkzeug
WO1997018064A2 (de) * 1995-11-15 1997-05-22 Pietro Poggetti Schere, insbesondere für friseure
DE10138394A1 (de) * 2001-08-04 2003-02-27 Aesculap Ag & Co Kg Medizinisches Instrument
DE10242152B3 (de) * 2002-09-05 2004-04-08 Aesculap Ag & Co. Kg Zweiteiliges medizinisches Instrument

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426857A (en) * 1992-11-30 1995-06-27 Fiskars Oy Ab Pivoted hand-held cutting tool
FR2933890B1 (fr) * 2008-07-15 2010-12-17 Bouvet Outil a main, procede de fabrication de cet outil, moules pour ce procede

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261856A (en) * 1925-08-31 1926-11-30 Verena Winifred Holmes Improvements in scissors, and like tools comprising two leg members pivotally connected
DE2638740A1 (de) * 1976-08-27 1978-03-09 Gardena Kress & Kastner Gmbh Gewerbe fuer eine schere
GB1597745A (en) * 1977-09-27 1981-09-09 Marin S Scissors or shears
US4757664A (en) * 1985-06-04 1988-07-19 Screenex Wire Weaving Manufacturers (Proprietary) Limited Wear resistant panel arrangement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007524A (en) * 1974-12-26 1977-02-15 Coats & Clark, Inc. Cast articulated tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261856A (en) * 1925-08-31 1926-11-30 Verena Winifred Holmes Improvements in scissors, and like tools comprising two leg members pivotally connected
DE2638740A1 (de) * 1976-08-27 1978-03-09 Gardena Kress & Kastner Gmbh Gewerbe fuer eine schere
GB1597745A (en) * 1977-09-27 1981-09-09 Marin S Scissors or shears
US4757664A (en) * 1985-06-04 1988-07-19 Screenex Wire Weaving Manufacturers (Proprietary) Limited Wear resistant panel arrangement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631718A1 (de) * 1993-06-29 1995-01-04 Fiskars Inc. Elastische Verriegelung für Handwerkzeug
WO1997018064A2 (de) * 1995-11-15 1997-05-22 Pietro Poggetti Schere, insbesondere für friseure
WO1997018064A3 (de) * 1995-11-15 1997-07-03 Pietro Poggetti Schere, insbesondere für friseure
DE10138394A1 (de) * 2001-08-04 2003-02-27 Aesculap Ag & Co Kg Medizinisches Instrument
DE10138394C2 (de) * 2001-08-04 2003-07-24 Aesculap Ag & Co Kg Medizinisches Instrument
DE10242152B3 (de) * 2002-09-05 2004-04-08 Aesculap Ag & Co. Kg Zweiteiliges medizinisches Instrument
US7393348B2 (en) 2002-09-05 2008-07-01 Aesculap Ag & Co. Kg Two-part medical instrument

Also Published As

Publication number Publication date
FR2639861B1 (fr) 1993-10-29
FR2639861A1 (fr) 1990-06-08

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