FR2639861A1 - MEANS FOR ASSEMBLING TWO OSCILLATING ELEMENTS AND IN PARTICULAR BLADES OF A SCISSOR - Google Patents

MEANS FOR ASSEMBLING TWO OSCILLATING ELEMENTS AND IN PARTICULAR BLADES OF A SCISSOR Download PDF

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Publication number
FR2639861A1
FR2639861A1 FR8816495A FR8816495A FR2639861A1 FR 2639861 A1 FR2639861 A1 FR 2639861A1 FR 8816495 A FR8816495 A FR 8816495A FR 8816495 A FR8816495 A FR 8816495A FR 2639861 A1 FR2639861 A1 FR 2639861A1
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France
Prior art keywords
well
elements
bore
head
hand
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Granted
Application number
FR8816495A
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French (fr)
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FR2639861B1 (en
Inventor
Louis Cau
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LOCAU INTERNATIONAL
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LOCAU INTERNATIONAL
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Publication date
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Priority to FR8816495A priority Critical patent/FR2639861B1/en
Priority to EP90420104A priority patent/EP0444372A1/en
Publication of FR2639861A1 publication Critical patent/FR2639861A1/en
Application granted granted Critical
Publication of FR2639861B1 publication Critical patent/FR2639861B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00Hand shears; Scissors
    • B26B13/28Joints

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)

Abstract

Ce moyen d'assemblage comprend, d'une part, venant de moulage avec l'un des éléments, un axe d'articulation 4 en forme de puits élastique, muni à son extrémité d'une collerette radiale 6 apte à former moyen de retenue axiale de l'autre élément, après engagement du puits dans l'alésage de celui-ci, et, d'autre part, un doigt de verrouillage 9, dont la tige 9a est apte à être engagée en forçant dans l'alésage 5 de l'axe 4 en forme de puits et dont la tête 9b est munie de moyens complémentaires 10 de calage en translation axiale des deux éléments.This assembly means comprises, on the one hand, coming from molding with one of the elements, a hinge pin 4 in the form of an elastic well, provided at its end with a radial flange 6 capable of forming retaining means. axial of the other element, after engagement of the well in the bore of the latter, and, on the other hand, a locking finger 9, the rod 9a of which is able to be engaged by forcing in the bore 5 of the axis 4 in the form of a well and the head 9b of which is provided with complementary means 10 for wedging the two elements in axial translation.

Description

"Moyens d'assemblage de deux éléments oscillants et en"Means for assembling two oscillating elements and

particulier des lames d'un ciseau".particular blades of a chisel ".

Traditionnellemenc, les lames de ciseau sont fixées par une vis épaulée dont la partie filetée se visse avec blocage dans un taraudage de l'une des lames et dont la partie épaulée se loge, avec jeu fonctionnel, dans un alésage approprié de l'autre lame calée en  Traditionally, 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 par la tête de ladite vis.  translation by the head of said screw.

Ce mode d'articulation, couramment utilisée, ne convient pas pour les ciseaux en matière synthétique car le coefficient de frottement de ce matériau est faible et favorise le déserrage de la vis. De plus, la mise en place d'une vis nécessite une opération de montage augmentant le coût du produit final alors même que le recours a des lames en matière synthétique est destiné à procurer un  This mode of articulation, commonly used, 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. In addition, the installation of a screw requires an assembly operation increasing the cost of the final product even when the use of plastic blades is intended to provide a

article peu onéreux.inexpensive item.

La présente invention a pour but de fournir un moyen d'assemblage de deux éléments oscillants qui, applicable en particulier, à l'articulation des lames de ciseau, soit peu onéreux, conduise à un temps de montage très réduit et assure une liaison fiable. Selon l'invention, ce moyen d'assemblage comprend, d'une part, venant de moulage avec l'un des éléments, un axe d'articulation en forme de puits élastique saillant de l'élément et muni à son extrémité d'une collerette radiale apte à former moyen de retenue axial de l'autre élément, après engagement du puits dans l'alésage de cet élément, et, d'autre part, un doigt de verrouillage dont la tige est apte à être engagée-en forçant dans l'alésage du puits et dont la tête est munie de moyens complémentaires de calage en translation  The object of the present invention is to provide a means of assembling two oscillating elements which, applicable in particular, to the articulation of the chisel blades, which is inexpensive, leads to a very reduced assembly time and ensures a reliable connection. According to the invention, this assembly means comprises, on the one hand, coming from molding with one of the elements, a hinge pin in the form of an elastic well projecting from the element and provided at its end with a radial flange capable of forming an axial retaining means for the other element, after engagement of the well in the bore of this element, and, on the other hand, a locking finger whose rod is able to be engaged-by forcing in the bore of the well and the head of which is provided with complementary means of wedging in translation

axiale des deux éléments.axial of the two elements.

Ainsi, pour assembler les deux éléments, il suffit d'engager l'axe du premier dans l'alésage du second, ce qui a pour effet de comprimer radialement la collerette du puits en déformant élastiquement le puits, puis, dès que cette collerette a repris élastiquement sa position dans l'alésage, de confirmer la liaison obtenue en engageant le doigt de verrouillage dans le puits. A la fin de cet engagement, qui s'effectue en force, le puits ne peut plus se déformer radialement et la tête du doigt prend appui, par son arête périphérique, sur l'élément intermédiaire et constitue ainsi un organe de calage en translation. Grâce à l'élasticité de la tête, ce calage est élastique et garantit la liaison et un serrage suffisant des deux éléments quelles que soient les inévitables variations dimensionnelles consécutives aux tolérances de fabrication et, notamment, de moulage  Thus, to assemble the two elements, it suffices to engage the axis of the first in the bore of the second, which has the effect of radially compressing the collar of the well by elastically deforming the well, then, as soon as this collar has resumed its position elastically in the bore, to confirm the connection obtained by engaging the locking finger in the well. At the end of this engagement, which is effected by force, the well can no longer deform radially and the head of the finger bears, by its peripheral edge, on the intermediate element and thus constitutes a wedging member in translation. Thanks to the elasticity of the head, this setting 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.

des deux pièces.of the two rooms.

L'invention sera mieux comprise à l'aide de la description  The invention will be better understood using the description

qui suit en référence aux dessins schématiques annexés représentant une forme d'exécution de ce moyen d'assemblage dans le cas de son  which follows with reference to the appended schematic drawings showing an embodiment of this assembly means in the case of its

application à la liaison des deux branches d'un ciseau.  application to the connection of the two branches of a chisel.

Figure 1 est une vue en perspective d'un ciseau à l'état monté, Figures 2, 3 et 4 sont des vues partielles en coupe transversale montrant, respectivement, l'axe de la première lame,  FIG. 1 is a perspective view of a scissor in the assembled state, FIGS. 2, 3 and 4 are partial views in cross section showing, respectively, the axis of the first blade,

l'assemblage des deux lames et le verrouillage de cet assemblage.  the assembly of the two blades and the locking of this assembly.

A la figure 1, 2 désigne un ciseau composé de deux lames 2 et  In FIG. 1, 2 designates a chisel composed of two blades 2 and

3 obtenues par moulage d'une matière synthétique.  3 obtained by molding a synthetic material.

Selon l'invention, la lame 2 est solidaire d'un axe d'articulation en saillie 4 ayant la forme générale d'un puits, c'est  According to the invention, the blade 2 is secured to a projecting hinge pin 4 having the general shape of a well, that is

à dire comportant un alésage axial 5 le traversant de part en part.  ie having an axial bore 5 passing right through it.

L'axe 4 est solidaire à son extrémité libre d'une collerette externe 6. Il comporte, dans sa partie dépassant de la lame 2, des fentes longitudinales 7 débouchant dans l'alésage 5. Ces fentes, au nombre de deux à huit, permettent-aux parois de l'axe constituant puits de se déformer lors de son engagement dans l'alésage 8, ménagé dans la lame 3 et pouvant comporter un chanfrein 3a (figure 3) pour favoriser cet engagement. Comme le montre la figure 3, dès que le puits fendu constituant l'axe 4 est engagé dans l'alésage 8, il est contraint radialement par cet alésage jusqu'à ce que sa collerette 6 échappe de cet alésage, cas dans lequel son élasticité naturelle lui permet de reprendre sa position initiale en rabattant la collerette 6 sur la face supérieure de la lame 3. Dans cette phase du montage, la lame 3 est liée en rotation à la lame 2 et est calée en translation avec  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. As shown in FIG. 3, as soon as the split well constituting the axis 4 is engaged in the bore 8, it is radially constrained by this bore until its flange 6 escapes from this bore, in which case its elasticity natural allows it to return to its initial position by folding the flange 6 on the upper face of the blade 3. In this phase of assembly, the blade 3 is linked in rotation to the blade 2 and is wedged in translation with

celle-ci par la collerette 6.this by the collar 6.

La liaison des lames 2 et 3 est terminée en introduisant un doigt de verrouillage 9 dans l'alésage 5'du puits. La tige cylindrique 9a de ce doigt est emmanchée de force dans l'alésage 5 de manière à s'opposer à toute rétraction radiale du puits fendu. Sa tête 9b a la forme générale d'une cupule dont la concavité est tournée du côté de la tige 9a. Le bord de cette cupule est aménagée pour former une arête circulaire 10 ayant un diamètre plus grand que celui de la collerette 6 afin qu'en position de verrouillage par le doigt 9, ladite arête prenne appui sur la face externe de la lame 3, comme montré à la figure 4. Dans cette position et grâce à l'élasticité de la cupule 9b, le doigt de verrouillage contribue à caler en translation la lame 3 par rapport à la lame 2 tout en communiquant à ces deux lames, un serrage transversal élastique permettant de compenser les tolérances de fabrication et d'obtenir un fonctionnement  The 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 flange 6 so that in the locking position by the finger 9, said edge is supported on the external face of the blade 3, as shown in Figure 4. In this position and thanks to the elasticity of the cup 9b, the locking finger contributes to wedging in translation the blade 3 relative to the blade 2 while communicating with these two blades, an elastic transverse tightening to compensate for manufacturing tolerances and obtain operation

satisfaisant du ciseau.satisfied with the chisel.

La tête 9b constitue également enjoliveur et peut présenter tous motifs en creux ou en relief lui donnant la forme d'une tête de  The head 9b also constitutes an embellishment and can have any recessed or raised patterns giving it the shape of a head.

vis ou autres.screws or others.

Un tel moyen d'assemblage, qui a été décrit ci dessus dans le cadre de son application à la liaison de deux lames d'un ciseau, peut aussi être utilisé pour assurer la liaison de tous éléments  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 elements

oscillants assemblables par paire.oscillating assemblable by pair.

Claims (3)

REVENDICATIONS 1. Moyen d'assemblage de deux éléments oscillants, et en particulier des lames d'un ciseau, composé d'éléments en matière synthétique moulée dont l'un d'eux comporte un alésage 8 pour le passage d'un axe d'articulation, caractérisé en ce qu'il comprend d'une part, venant de moulage avec l'un des éléments, un axe d'articulation 4 en forme de puits élastique, muni à son extrémité d'une collerette radiale 6 apte à former moyen de retenue axiale de l'autre élément, après engagement du puits dans l'alésage de celui-ci, et, d'autre part, un doigt de verrouillage 9, dont la tige 9a, est apte à être engagée en forçant dans l'alésage 5 de l'axe 4 en forme de puits et dont la tête 9b est munie de moyens complémentaires 10 de  1. Means for assembling two oscillating elements, and in particular blades of a chisel, composed of molded synthetic material elements, one of which has a bore 8 for the passage of a hinge pin , characterized in that it comprises on the one hand, coming from molding with one of the elements, a hinge pin 4 in the form of an elastic well, provided at its end with a radial flange 6 capable of forming a means of axial retention of the other element, after engagement of the well in the bore thereof, and, on the other hand, a locking finger 9, whose rod 9a, is capable of being engaged by forcing in the bore 5 of the axis 4 in the form of a well and the head 9b of which is provided with complementary means 10 of calage en translation axiale des deux éléments.  wedging in axial translation of the two elements. 2. Moyen d'assemblage selon la revendication 1, caractérisé en ce que l'axe 4 en forme de puits comporte, dans sa partie dépassant  2. Assembly means according to claim 1, characterized in that the shaft 4 in the form of a well has, in its projecting part de l'élément dont il est solidaire, des fentes longitudinales 7.  of the element of which it is integral, longitudinal slots 7. 3. Moyen d'assemblage selon l'une quelconque des  3. Assembly means according to any one of revendications 1 et 2, caractérisé en ce que la tête 9b du doigt de  Claims 1 and 2, characterized in that the head 9b of the finger verrouillage 9 est en forme de cupule dont la concavité est tournée en direction de la tige 9a présentant une arête circulaire 10 de diamètre supérieur à celui extérieur de la collerette 6 et constituant moyen de calage en translation axiale des deux éléments et organe de réglage du frottement de ces derniers, en venant en contact avec  locking 9 is cup-shaped whose concavity is turned towards the rod 9a having a circular edge 10 of diameter greater than that outside of the flange 6 and constituting means of wedging in axial translation of the two elements and friction adjustment member of these, coming in contact with l'élément articulé 6.the articulated element 6.
FR8816495A 1988-12-07 1988-12-07 MEANS FOR ASSEMBLING TWO OSCILLATING ELEMENTS AND IN PARTICULAR BLADES OF A SCISSOR Expired - Fee Related FR2639861B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8816495A FR2639861B1 (en) 1988-12-07 1988-12-07 MEANS FOR ASSEMBLING TWO OSCILLATING ELEMENTS AND IN PARTICULAR BLADES OF A SCISSOR
EP90420104A EP0444372A1 (en) 1988-12-07 1990-02-27 Elastic assembly means for two oscillating elements, particularly scissor blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8816495A FR2639861B1 (en) 1988-12-07 1988-12-07 MEANS FOR ASSEMBLING TWO OSCILLATING ELEMENTS AND IN PARTICULAR BLADES OF A SCISSOR

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FR2639861A1 true FR2639861A1 (en) 1990-06-08
FR2639861B1 FR2639861B1 (en) 1993-10-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673727A2 (en) * 1994-03-25 1995-09-27 Fiskars Oy Ab Pivoted hand-held cutting tool
FR2933890A1 (en) * 2008-07-15 2010-01-22 Bouvet Hand-held tool i.e. forceps, for pinching and cutting object in medical field, has pins forcibly introduced in hole till assembled position of branches, where pins retain pivot in hole by shape cooperation between pins and support face

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367774A (en) * 1993-06-29 1994-11-29 Fiskars Inc. Resilient lock for a hand tool
DE19542575C1 (en) * 1995-11-15 1996-10-17 Pietro Poggetti Scissors for use by barbers
DE10138394C2 (en) * 2001-08-04 2003-07-24 Aesculap Ag & Co Kg Medical instrument
DE10242152B3 (en) 2002-09-05 2004-04-08 Aesculap Ag & Co. Kg Two-part medical instrument

Citations (5)

* 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
US4007524A (en) * 1974-12-26 1977-02-15 Coats & Clark, Inc. Cast articulated tool
DE2638740A1 (en) * 1976-08-27 1978-03-09 Gardena Kress & Kastner Gmbh Hinge pin for hedge clipping shears - has tensioning piece with corrugated elastic edge bearing against corrugated lever face
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

Patent Citations (5)

* 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
US4007524A (en) * 1974-12-26 1977-02-15 Coats & Clark, Inc. Cast articulated tool
DE2638740A1 (en) * 1976-08-27 1978-03-09 Gardena Kress & Kastner Gmbh Hinge pin for hedge clipping shears - has tensioning piece with corrugated elastic edge bearing against corrugated lever face
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673727A2 (en) * 1994-03-25 1995-09-27 Fiskars Oy Ab Pivoted hand-held cutting tool
EP0673727A3 (en) * 1994-03-25 1996-02-07 Fiskars Ab Oy Pivoted hand-held cutting tool.
FR2933890A1 (en) * 2008-07-15 2010-01-22 Bouvet Hand-held tool i.e. forceps, for pinching and cutting object in medical field, has pins forcibly introduced in hole till assembled position of branches, where pins retain pivot in hole by shape cooperation between pins and support face

Also Published As

Publication number Publication date
EP0444372A1 (en) 1991-09-04
FR2639861B1 (en) 1993-10-29

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