WO1997046353A1 - Handtool such as scissors with pivoting gripper member and spring return means - Google Patents

Handtool such as scissors with pivoting gripper member and spring return means Download PDF

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Publication number
WO1997046353A1
WO1997046353A1 PCT/FR1997/000951 FR9700951W WO9746353A1 WO 1997046353 A1 WO1997046353 A1 WO 1997046353A1 FR 9700951 W FR9700951 W FR 9700951W WO 9746353 A1 WO9746353 A1 WO 9746353A1
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WO
WIPO (PCT)
Prior art keywords
ring
branch
axial
tool according
pivoting
Prior art date
Application number
PCT/FR1997/000951
Other languages
French (fr)
Inventor
Jean-Jacques Taberlet
Original Assignee
Taberlet Jean Jacques
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 Taberlet Jean Jacques filed Critical Taberlet Jean Jacques
Publication of WO1997046353A1 publication Critical patent/WO1997046353A1/en

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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
    • B26B13/12—Hand shears; Scissors characterised by the shape of the handles
    • B26B13/20—Hand shears; Scissors characterised by the shape of the handles with gripping bows in the handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/22—Hand shears; Scissors combined with auxiliary implements, e.g. with cigar cutter, with manicure instrument
    • B26B13/24—Hand shears; Scissors combined with auxiliary implements, e.g. with cigar cutter, with manicure instrument to aid hair cutting

Definitions

  • HAND TOOL SUCH AS A PAIR OF PIVOTING GRIPPED SCISSORS AND ELASTIC RECALL
  • the present invention relates to hand tools such as a pair of scissors or a pair of pliers, in particular pairs of scissors for cutting hair by a hairdresser.
  • Document FR 2 627 421 A provides for this that each of the branches provided with the rings in which the fingers of the hairdresser's hand engage is provided with an adjustable connection, making it possible to freely rotate each of the rings along a longitudinal axis of pivoting parallel to the longitudinal axis of each of the articulated elements. It is thus possible to modify the inclination of the plane of the rings with respect to the cutting plane of the blades.
  • the device described in this document requires using the two hands of the hairdresser to adjust the pivoting of one and the other of the rings around their respective longitudinal pivot axis Also, the adaptation of the thumb in the second receiving member, bearing against the bearing face of the ring, induces a force of pivoting of the tool, force which the user must balance by the ring finger inserted in the first receptor organ II results in mutile fatigue of the fingers
  • Scissors are known as described in document WO 92 12832 A, comprising first and second articulated elements around an intermediate common axis, each element comprising a cutting blade extended beyond the axis of articulation by a branch provided with a receiving member suitable for operation by the end of a hand finger of the hairdresser .
  • the holding of the pair of scissors is carried out by engaging the ring finger of the hand in a closed receiving member consisting of a pivoting ring of the first branch, and by engaging the thumb of the hand in a fixed and open receiving member second branch with longitudinal end portion and transverse support structure.
  • the first branch held by the ring finger remains substantially fixed during cutting.
  • Document US 3,906,630 A describes a pair of scissors having two closed ring receiving members. At least one of the rings pivots freely around a longitudinal axis by an amplitude of ⁇ 30 ° limited by stops formed by screws or pins.
  • the device has the same drawbacks as that of document FR 2 627 421 A, by the presence of the two rings constituting closed receiving members.
  • the present invention aims in particular to overcome these drawbacks, by proposing a new tool structure, which can be used not only for a pair of hair cutting scissors, but also for a pair of pliers such as surgical pliers, the structure being such that it makes it possible to appreciably improve the behavior of the tool, without inducing finger fatigue.
  • a problem proposed by the present invention is thus to design a tool having simultaneously the following particularities
  • the tool must be able to be held by a single hand finger, namely the ring finger, passed through a particular structure of the first receiving member, the tool not having to pivot excessively around this finger, -
  • the second receiving member shaped to receive the thumb with the same hand, must ensure a great freedom of movement of this thumb for its introduction and its extraction with respect to said second receiving member, so that the introduction and extraction of the thumb are performed without requiring excessive deformation of the fingers of the hand, the tool also having to ensure good grip of the thumb in the second receiving member, without excessive risk of lateral sliding,
  • the hand tool according to the invention such as a pair of scissors or a pair of pliers, in particular a pair of scissors for cutting hair, comprises a first and a second elements hinged together around an intermediate common axis, each element comprising a useful part such as a cutting blade or a pliers head, the first element comprising a first operating branch provided with a first receiving member closed with a ring suitable for the transverse engagement of the end of a user's finger, the ring being able to pivot about a longitudinal pivot axis of the first operating branch, the second articulated element comprising a second branch of maneuver comprising a second fixed and open receiving member with a longitudinal end part associated with a transverse support structure developing substantially in the pivot plane of the articulated elements strips opposite the first articulated element, the support structure having a concave support face oriented towards the free end of the second branch.
  • - stops limit the pivoting of the ring around the longitudinal pivot axis between a first extreme position in which the ring is substantially in the plane perpendicular to the common intermediate axis and a second extreme position in which the ring is pivoted away from the first position in the direction of rotation such that the face by which the finger engages in the ring is oriented towards the outside, - elastic return means urge the ring in rotation about the longitudinal pivot axis to bring it back to the first position.
  • the user can hold the tool by engaging the end of his ring finger in the ring of the first receiving member, and can maneuver the tool by the end of his thumb resting on the second receiving member .
  • the range of motion required to orient the tool during use is limited, reducing fatigue.
  • the elastic return in rotation of the ring promotes the support of the thumb in the second receiving member and reduces the risks of transverse sliding, while simultaneously promoting the return of the tool to a rest position during storage.
  • the articulation between one receiving ring and the first operating branch may comprise an axial handle integral with the ring, and pivotally engaged in a corresponding axial bore of the first operating branch.
  • the handle may advantageously include a radial protrusion engaged in a sectoral bore housing whose end faces form stops against which selectively bears the radial protrusion of the axial handle in the respective extreme positions of the ring.
  • the elastic return means may comprise a helical torsion spring, housed in the axial bore in extension of the axial handle, and the ends of which are engaged respectively in the axial handle on the one hand and in the wall of the first operating branch d 'somewhere else.
  • annular space is formed between an external shoulder of the axial ring handle and the end edge of the first operating branch, and an annea ⁇ made of elastic material is engaged in said annular space and protrudes radially. outside said space to form a damping stop against which the second tool branch comes to bear at the end of the pivoting stroke of the articulated elements.
  • the support structure may advantageously be a rod, one connection end of which is integral with the second branch of a second articulated element, said rod being curved in S according to a first concavity starting from the connection end and facing the free end. second branch, and according to a second concavity facing outward in the free end of the rod area.
  • the support structure of the second operating branch can be a transverse rod ending in a fixed or rotary ball. The ball shape promotes oblique finger presses in certain positions.
  • FIG. 2 is a right side view of the pair of scissors according to FIG. 1, in longitudinal section along the axis I-I of FIG. 1,
  • FIG. 3 is a partial front view illustrating a structure of second receiving member according to a second embodiment of the invention.
  • FIG. 4 is a partial front view of the second receiving member according to a third embodiment of the invention.
  • - Figure 5 is a partial front view in longitudinal section of the first receiving member according to an embodiment of the invention
  • - Figure 6 is a cross section along the plane A-A of Figure 5.
  • the hand tool according to the invention is a pair of scissors.
  • the pair of scissors comprises, in a conventional manner, a first element 1 and a second element 2 articulated to each other around an intermediate common axis 3.
  • the first articulated element 1 comprises a useful part 4 in the form of a cutting blade with a cutting edge 5, which extends beyond the intermediate common axis 3 by a first branch 6 provided with a first receiving member 7 adapted for operation by the end of a hand finger of a user
  • the second articulated element 2 comprises a second useful part 8 in the form of a cutting blade, with a cutting edge 9, the second cutting blade 8 extending, beyond the common intermediate axis 3, by a second branch 10 provided with a second receiving member 11 also suitable for operation by the end of a user's finger
  • the first receiving member 7 comprises a ring 12 located in a plane substantially parallel to the mean longitudinal axis II-II of the first branch 6.
  • the ring 12 is slightly offset, in the plane defined by the blades 4 and 8, outwardly opposite the second branch 10.
  • the tip 13 can provide a tip 13 engaged in the ring 12.
  • the tip 13 then constitutes a generally cylindrical receiving member in which the ring finger of a hand of the user can engage
  • the tip 13 of the first receiving member such that represented consists of a generally hollow cylindrical sleeve 14 open at its two ends, provided with an external end flange 15.
  • the external peripheral face 16 of the sleeve 14 has an external diameter adapted to be introduced axially by force into the central opening of the ring 12 until the flange 15 bears against the ring 12.
  • the inner face 17 of the sleeve generally cylindrical or slightly conical, has a diameter suitable for receiving the end axially with little play of the user's ring finger.
  • the length of the endpiece 13 is preferably such that the length of the transverse tubular passage 18 of the first receiving member 7 is between 10 and 30 millimeters approximately. Good results are obtained with a length of about 17 millimeters. This achieves a good compromise between sufficient retention of the finger in the receptor organ and sufficient freedom of the finger allowing the flexing of its joints.
  • the axis III-III of the central bore or transverse tubular passage 18 of the end piece 13 is advantageously pivoted by an angle A relative to the perpendicular to the mean longitudinal axis II-II to the first articulated element 1, in the plane containing the longitudinal axis II-II and the intermediate common axis 3.
  • the angle A is advantageously between
  • the ring 12 of the first receiving member 7 is connected to the first corresponding branch 6 by an articulation 30 with a longitudinal pivot axis 19.
  • stops limit the pivoting of the ring 12 of the first receiving member 7 around the longitudinal pivot axis 19 between a first extreme position, shown in FIGS. 1 and 2, in which the ring 12 is substantially in the plane perpendicular to the intermediate common axis 3, and a second extreme position in which the ring 12 is pivoted away from the first position in the direction of rotation such as the face 31 by which the finger s' engaged in the ring 12 is oriented towards the outside, away from the second articulated element 2.
  • Elastic return means 20 rotate the ring 12 around the longitudinal pivot axis 19 to bring it back in first position.
  • FIGS. 5 and 6 illustrate an advantageous embodiment of the articulation 30.
  • the ring 12 is integral with an axial handle 32 pivotally engaged in a corresponding axial bore 33 of the first branch 6 of maneuver.
  • the axial handle 32 has a radial protrusion 34 engaged in a sectoral housing 35 of the axial bore 33 whose end faces 36 and 37 ( Figure 6) form abutments against which selectively bears the radial protrusion 34 of the axial handle 32 in the respective extreme positions of the ring 12 of the first receiving member 7.
  • the axial handle 32 is shown in the first extreme position, corresponding to the position illustrated in FIGS. 1 and 2. In this first extreme position , the radial projection 34 is in abutment against the first end face 36 of the sectoral housing 35.
  • the axial handle 32, and the ring 12 which is integral with it, can pivot around the axis longitudinal pivot 19 in the direction of arrow 38, to the second extreme position in which the radial projection 34 comes to bear against the second end face 37 forming a stop.
  • the amplitude of pivoting of the ring 12 is fixed by the relative positions of the end faces 36 and 37, and by the angular development of the radial protuberance 34.
  • the swivel amplitude is about 90 degrees It may be advantageous to provide an amplitude of ring pivot 12, about its longitudinal pivot axis 19, which is less than about 90 degrees
  • the elastic return means comprise a helical torsion spring 20, housed in the axial bore 33 in extension of the axial handle 32, and the ends 39 and 40 of which are engaged respectively in the handle axial 32 on the one hand and in the wall of the first operating branch 6 on the other hand
  • the axial handle 32 of the ring 12 is retained on the first operating branch 6 by a screw 41, the rod 42 of which passes through an axial hole 43 of the handle 32 and is screwed in a insert 44 forming a threaded end of the axial bore 33 of the first branch 6, and the head 45 of which bears against a shoulder 46 of the axial hole 43
  • an annular space 47 is provided between an external shoulder 48 of the axial handle 32 of the ring 12 and the end edge 49 of the first operating branch 6.
  • An annular ring 50 of elastic material is engaged in said annular space 47 and protrudes radially outside of said annular space 47 to form a damping stop against which the second tool branch 11 comes to bear at the end of the pivoting stroke of the elements.
  • the articulation 30 of the first receiving member 7 is close to the transverse tubular passage 18 or to the ring 12
  • the index and middle finger of the hand holding the tool can thus rest on a fixed portion of the first branch 6.
  • the rotation of the phalanx of the ring finger engaged in the first receiving member 7 does not therefore cause the rotation of the phalanges adjacent to the index and middle fingers. Comfort and hold are improved.
  • the end piece 13 is intended to form a guide in which the end of the annular is engaged.
  • the tool must thus hold sufficiently in position, held by the annular alone, without the possibility of axial translation or axial rotation of the tool. around the ring finger.
  • the sleeve 14 of the endpiece 13 must have an internal diameter sufficiently close to the external diameter of the user's ring finger, so that sufficient friction exists between
  • the sleeve 14 can advantageously be made of a slightly elastic material, promoting adhesion between the sleeve 14 and the ring finger without requiring excessive tightening.
  • the length of the sleeve 14 is substantially equal to its diameter.
  • the inner surface of the sleeve 14 can advantageously include irregularities such as ribs and grooves, cells, bosses, favoring the ventilation of the skin in contact with said sleeve
  • the first branch 6 of the first element 1 is extended, beyond the ring 12, opposite the intermediate common axis 3, by an extension 21 provided with a face of support 22 close to the longitudinal axis II-II of the first branch.
  • the support face 22 is intended to be oriented, by pivoting of the ring 12 around its longitudinal pivot axis 19, opposite the second branch 10 of the second articulated element 2.
  • the support face 22 allows the user to let rest against said face 22, his little finger adjacent to the ring finger inserted in the end piece 13
  • the second receiving member 11, mounted on the second articulated element 2 comprises a longitudinal end portion 23 seconds branch 10, and a transverse support structure 24 developing substantially in the pivoting plane of the articulated elements 1 and 2 opposite the first articulated element 1, as shown in Figure 1 Thus, the second receiving member 11 is fixed and open.
  • the support structure 24 comprises a generally concave support face 124 oriented towards the free end 26 of the second branch 10
  • the support structure 24 shown in Figure 1 is a rod, one end 25 of which is integral with the second branch 10 of the second articulated element 2, the said rod being curved in an arc according to a concavity turned towards the free end 26 of the second branch 10, and along a radius greater than the average radius of one inch of the user.
  • the support structure advantageously forms an arc of a circle of about 90 degrees, and the posterior support face 124 has a convex transverse profile.
  • the support structure 24 shown in FIG. 3 is a transverse rod, the first end 25 of which is integral with the second branch 10 of the second articulated element 2, and ending in a ball 51 fixed or rotary.
  • the longitudinal end portion 23 has a concave bearing face 52
  • the support structure 24 shown in FIG. 4 is an arcuate curved transverse rod, the posterior support face 124 of which has a convex transverse profile and a longitudinal profile with regular concavity facing the free end 26 of the second branch.
  • the longitudinal end portion 23 of the second branch 10 has a length substantially equal to the average diameter of a user inch, to constitute a support zone of sufficient length for the support of the thumb
  • This longitudinal end portion 23 second branch 10 ends with a free end 26 at an angle, set back from the ring 12 when the tool is closed, as shown in dashed lines in Figure 1
  • the useful parts 4 and 8 are scissor blades, with a cutting metal part.
  • the first cutting metal part 104 is secured to the inner face of a portion 106 of the first operating branch 6 of molded plastic material.
  • the second cutting metal part 108 is devoid of plastic part, in order to have a reduced thickness such that as illustrated in Figure 2.

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

Abstract

The invention discloses a tool including a first receiving member (7) comprising a ring (12) pivoting about a longitudinal pivot axis (19) between two end positions limited by stops, and which is brought back to the first end position by a spring (20), and in which is engaged an interchangeable end piece (13). A second receiving member (11) is constituted by an arc-shaped bearing structure (24),extending outwards, and closer to the intermediate common axis (3) than the first receiving member (7). The receiving members (7, 11) enable the insertion of two fingers to operate the branches (6, 10) of two articulated elements (1, 2) about their intermediate common axis (3). The useful parts of the articulated elements (1, 2) can be cutting blades (4, 8) or pliers.

Description

OUTIL A MAIN TEL QU'UNE PAIRE DE CISEAUX A ORGANE DE PREHENSION PIVOTANT ET RAPPEL ELASTIQUE HAND TOOL SUCH AS A PAIR OF PIVOTING GRIPPED SCISSORS AND ELASTIC RECALL
DOMAINE TECHNIQUE DE L'INVENTION La présente invention concerne les outils à main tels qu'une paire de ciseaux ou une paire de pinces, notamment les paires de ciseaux pour la coupe des cheveux par un coiffeur.TECHNICAL FIELD OF THE INVENTION The present invention relates to hand tools such as a pair of scissors or a pair of pliers, in particular pairs of scissors for cutting hair by a hairdresser.
Avec les ciseaux traditionnels, l'utilisateur engage deux doigts de main dans deux organes récepteurs respectifs constitués d'anneaux montés fixes en bout des branches de manoeuvre des ciseaux.With traditional scissors, the user engages two fingers of hand in two respective receiving members consisting of rings mounted fixed at the end of the operating arms of the scissors.
On sait que, pour la coupe de cheveux d'un client, le coiffeur doit pouvoir garder la paire de ciseaux qu'il utilise dans une position sensiblement constante, pratiquement dans un plan vertical, quel que soit 1'endroit de la coupe sur et autour de la tête du client et la position relative de celle-ci qui, à l'évidence, ne reste pas immuable pendant toute une séance de coiffure. Selon la position de la tête à coiffer ou l'endroit de la coupe, il est nécessaire d'orienter convenablevient les lames coupantes pour régler le plan de coupe. Par le fait que les anneaux sont fixes, cette orientation est parfois difficile, et exige en particulier une rotation variable du poignet, dans certains cas à la limite des facultés de débattement de celui-ci.We know that, for a client's haircut, the hairdresser must be able to keep the pair of scissors that he uses in a substantially constant position, practically in a vertical plane, regardless of the place of the cut on and around the head of the client and the relative position thereof which, obviously, does not remain immutable during a whole hairdressing session. Depending on the position of the head to be styled or the location of the cut, it is necessary to orient the cutting blades properly to adjust the cutting plane. By the fact that the rings are fixed, this orientation is sometimes difficult, and in particular requires a variable rotation of the wrist, in certain cases at the limit of the latter's ability to move.
Le document FR 2 627 421 A prévoit pour cela que chacune des branches munies des anneaux dans lesquels s'engagent les doigts de la main du coiffeur est munie d'un raccord orientable, permettant de faire pivoter librement chacun des anneaux selon un axe longitudinal de pivotement parallèle à l'axe longitudinal de chacun des éléments articulés. On peut ainsi modifier l'inclinaison du plan des anneaux par rapport au plan de coupe des lames Le dispositif décrit dans ce document nécessite α'utiliser les deux mains du coiffeur pour régler le pivotement de l'un et l'autre des anneaux autour de leur axe de pivotement longitudinal respectif Egalement, l'adaptation du pouce dans le second organe récepteur, en appui contre la face d'appui de l'anneau, induit un effort de pivotement de l'outil, effort que l'utilisateur doit équilibrer par l'annulaire introduit dans le premier organe récepteur II en résulte une fatigue mutile des doigtsDocument FR 2 627 421 A provides for this that each of the branches provided with the rings in which the fingers of the hairdresser's hand engage is provided with an adjustable connection, making it possible to freely rotate each of the rings along a longitudinal axis of pivoting parallel to the longitudinal axis of each of the articulated elements. It is thus possible to modify the inclination of the plane of the rings with respect to the cutting plane of the blades. The device described in this document requires using the two hands of the hairdresser to adjust the pivoting of one and the other of the rings around their respective longitudinal pivot axis Also, the adaptation of the thumb in the second receiving member, bearing against the bearing face of the ring, induces a force of pivoting of the tool, force which the user must balance by the ring finger inserted in the first receptor organ II results in mutile fatigue of the fingers
On connaît des ciseaux tels que décrits dans le document WO 92 12832 A, comportant un premier et un second éléments articulés autour d'un axe commun intermédiaire, chaque élément comprenant une lame coupante prolongée au-delà de l'axe d'articulation par une branche munie d'un organe récepteur adapté pour la manoeuvre par l'extrémité d'un doigt de main du coiffeur. La tenue en main de la paire de ciseaux est réalisée en engageant l'annulaire de la main dans un organe récepteur fermé constitué d'un anneau pivotant de la première branche, et en engageant le pouce de la main dans un organe récepteur fixe et ouvert de seconde branche à partie longitudinale d'extrémité et structure d'appui transversale. La première branche tenue par l'annulaire reste sensiblement fixe pendant la coupe.Scissors are known as described in document WO 92 12832 A, comprising first and second articulated elements around an intermediate common axis, each element comprising a cutting blade extended beyond the axis of articulation by a branch provided with a receiving member suitable for operation by the end of a hand finger of the hairdresser . The holding of the pair of scissors is carried out by engaging the ring finger of the hand in a closed receiving member consisting of a pivoting ring of the first branch, and by engaging the thumb of the hand in a fixed and open receiving member second branch with longitudinal end portion and transverse support structure. The first branch held by the ring finger remains substantially fixed during cutting.
Bien que la tenue en main soit améliorée, on constate toutefois une difficulté de tenue des ciseaux en orientation, notamment à cause d'un risque important de glissement latéral du pouce dans 1 'organe récepteur fixe de seconde branche. Le freinage en rotation de l'anneau peut limiter le risque de glissement, mais augmente alors les efforts de tenue des ciseaux et la fatigue qui en résulte. Egalement, lors de la saisie des ciseaux, l'orientation de l'anneau est aléatoire et nécessite une première manoeuvre d'orientation, généralement avec les deux mains.Although the handling is improved, there is however a difficulty in holding the scissors in orientation, in particular because of a significant risk of lateral sliding of the thumb in one stationary receiving member of the second branch. Braking in rotation of the ring can limit the risk of slipping, but then increases the efforts of holding the scissors and the fatigue which results therefrom. Also, when entering the scissors, the orientation of the ring is random and requires a first orientation maneuver, generally with both hands.
Le document US 3 906 630 A décrit une paire de ciseaux ayant deux organes récepteurs fermés à anneau. L'un au moins des anneaux pivote librement autour d'un axe longitudinal selon une amplitude de ± 30° limitée par des butées formées de vis ou d'épingles. Le dispositif présente les mêmes inconvénients que celui du document FR 2 627 421 A, par la présence des deux anneaux constituant des organes récepteurs fermés. EXPOSE DE L'INVENTIONDocument US 3,906,630 A describes a pair of scissors having two closed ring receiving members. At least one of the rings pivots freely around a longitudinal axis by an amplitude of ± 30 ° limited by stops formed by screws or pins. The device has the same drawbacks as that of document FR 2 627 421 A, by the presence of the two rings constituting closed receiving members. STATEMENT OF THE INVENTION
La présente invention vise notamment à pallier ces inconvénients, en proposant une structure nouvelle d'outil, pouvant être utilisée non seulement pour une paire de ciseaux de coupe de cheveux, tiais également pour une paire de pinces telles que des pinces de chirurgie, la structure étant telle qu'elle permet d'améliorer sensiblement la tenue de l'outil, sans induire de fatigue des doigts Un problème proposé par la présente invention est ainsi de concevoir un outil présentant simultanément les particularités suivantesThe present invention aims in particular to overcome these drawbacks, by proposing a new tool structure, which can be used not only for a pair of hair cutting scissors, but also for a pair of pliers such as surgical pliers, the structure being such that it makes it possible to appreciably improve the behavior of the tool, without inducing finger fatigue. A problem proposed by the present invention is thus to design a tool having simultaneously the following particularities
- l'outil doit pouvoir être tenu par un seul doigt de main, à savoir l'annulaire, passé dans une structure particulière de premier organe récepteur, l'outil ne devant pas pivoter exagérément autour de ce doigt, - le second organe récepteur, conformé pour recevoir le pouce de la même main, doit assurer une grande liberté de mouvement de ce pouce pour son introduction et son extraction par rapport audit second organe récepteur, de façon que l'introduction et l'extraction du pouce s'effectuent sans nécessiter de déformations excessives des doigts de la main, l'outil devant en outre assurer une bonne tenue du pouce dans le second organe récepteur, sans risque excessif de glissement latéral,the tool must be able to be held by a single hand finger, namely the ring finger, passed through a particular structure of the first receiving member, the tool not having to pivot excessively around this finger, - The second receiving member, shaped to receive the thumb with the same hand, must ensure a great freedom of movement of this thumb for its introduction and its extraction with respect to said second receiving member, so that the introduction and extraction of the thumb are performed without requiring excessive deformation of the fingers of the hand, the tool also having to ensure good grip of the thumb in the second receiving member, without excessive risk of lateral sliding,
- pendant l'actionnement de l'outil par le pouce et l'annulaire, les efforts de rotation de l'outil induits par le pouce doivent être équilibrés par l'appui naturel des autres doigts sur l'outil, sans nécessiter d'efforts supplémentaires de compensation.- during the actuation of the tool by the thumb and the ring finger, the forces of rotation of the tool induced by the thumb must be balanced by the natural support of the other fingers on the tool, without requiring efforts additional compensation.
Pour atteindre ces ob ets ainsi que d'autres, l'outil à main selon l'invention, tel qu'une paire de ciseaux ou une paire de pinces, notamment une paire de ciseaux pour la coupe de cheveux, comporte un premier et une second éléments articulés entre eux autour d'un axe commun intermédiaire, chaque élément comprenant une partie utile telle qu'une lame coupante ou une tête de pince, le premier élément comprenant une première branche de manoeuvre munie d'un premier organe récepteur fermé à anneau adapté pour l'engagement transversal de l'extrémité d'un doigt de main d'un utilisateur, l'anneau pouvant pivoter autour d'un axe de pivotement longitudinal de la première branche de manoeuvre, le second élément articulé comprenant une seconde branche de manoeuvre comportant un second organe récepteur fixe et ouvert à partie longitudinale d'extrémité associée à une structure d'appui transversale se développant sensiblement dans le plan de pivotement des éléments articulés à l'opposé du premier élément articulé, la structure d'appui présentant une face d'appui concave orientée vers l'extrémité libie de seconde branche. En outre, selon l'invention - des butées limitent le pivotement de l'anneau autour de l'axe de pivotement longitudinal entre une première position extrême dans laquelle l'anneau est sensiblement dans le plan perpendiculaire à l'axe commun intermédiaire et une seconde position extrême dans laquelle l'anneau est pivoté à l'écart de la première position dans le sens de rotation tel que la face par laquelle le doigt s'engage dans l'anneau est orientée vers l'extérieur, - des moyens de rappel élastique sollicitent en rotation l'anneau autour de l'axe de pivotement longitudinal pour le ramener en première position.To achieve these and other objects, the hand tool according to the invention, such as a pair of scissors or a pair of pliers, in particular a pair of scissors for cutting hair, comprises a first and a second elements hinged together around an intermediate common axis, each element comprising a useful part such as a cutting blade or a pliers head, the first element comprising a first operating branch provided with a first receiving member closed with a ring suitable for the transverse engagement of the end of a user's finger, the ring being able to pivot about a longitudinal pivot axis of the first operating branch, the second articulated element comprising a second branch of maneuver comprising a second fixed and open receiving member with a longitudinal end part associated with a transverse support structure developing substantially in the pivot plane of the articulated elements strips opposite the first articulated element, the support structure having a concave support face oriented towards the free end of the second branch. In addition, according to the invention - stops limit the pivoting of the ring around the longitudinal pivot axis between a first extreme position in which the ring is substantially in the plane perpendicular to the common intermediate axis and a second extreme position in which the ring is pivoted away from the first position in the direction of rotation such that the face by which the finger engages in the ring is oriented towards the outside, - elastic return means urge the ring in rotation about the longitudinal pivot axis to bring it back to the first position.
Avec une telle structure, l'utilisateur peut tenir l'outil en engageant 1 'extrémité de son annulaire dans 1 'anneau du premier organe récepteur, et peut manoeuvrer l'outil par l'extrémité de son pouce en appui sur le second organe récepteur. Les amplitudes de mouvement nécessaires pour orienter l'outil lors de l'utilisation sont limitées, réduisant ainsi la fatigue. Le rappel élastique en rotation de l'anneau favorise 1 'appui du pouce dans le second organe récepteur et réduit les risques de glissement transversal, tout en favorisant simultanément le retour de 1 'outil en une position de repos lors de son rangement.With such a structure, the user can hold the tool by engaging the end of his ring finger in the ring of the first receiving member, and can maneuver the tool by the end of his thumb resting on the second receiving member . The range of motion required to orient the tool during use is limited, reducing fatigue. The elastic return in rotation of the ring promotes the support of the thumb in the second receiving member and reduces the risks of transverse sliding, while simultaneously promoting the return of the tool to a rest position during storage.
Selon un mode de réalisation avantageux, l'articulation entre 1 'anneau récepteur et la première branche de manoeuvre peut comprendre un manche axial solidaire de l'anneau, et engagé à pivotement dans un alésage axial correspondant de la première branche de manoeuvre. Le manche peut avantageusement comporter une excroissance radiale engagée dans un logement sectoriel d'alésage dont les faces d'extrémité forment butées contre lesquelles vient sélectivement en appui 1 'excroissance radiale de manche axial dans les positions extrêmes respectives de l'anneau. Les moyens de rappel élastique peuvent comprendre un ressort hélicoïdal de torsion, logé dans l'alésage axial en prolongement du manche axial, et dont les extrémités sont engagées respectivement dans le manche axial d'une part et dans la paroi de première branche de manoeuvre d'autre part. Selon un mode de réalisation préféré, un espace annulaire est ménagé entre un epaulement externe de manche axial d'anneau et le bord d'extrémité de la première branche de manoeuvre, et un anneaα en matière élastique est engagé dans ledit espace annulaire et dépasse radialement à l'extérieur dudit espace pour former butée d'amortissement contre laquelle vient porter la seconde branche d'outil en fin de course de pivotement des éléments articulés.According to an advantageous embodiment, the articulation between one receiving ring and the first operating branch may comprise an axial handle integral with the ring, and pivotally engaged in a corresponding axial bore of the first operating branch. The handle may advantageously include a radial protrusion engaged in a sectoral bore housing whose end faces form stops against which selectively bears the radial protrusion of the axial handle in the respective extreme positions of the ring. The elastic return means may comprise a helical torsion spring, housed in the axial bore in extension of the axial handle, and the ends of which are engaged respectively in the axial handle on the one hand and in the wall of the first operating branch d 'somewhere else. According to a preferred embodiment, an annular space is formed between an external shoulder of the axial ring handle and the end edge of the first operating branch, and an anneaα made of elastic material is engaged in said annular space and protrudes radially. outside said space to form a damping stop against which the second tool branch comes to bear at the end of the pivoting stroke of the articulated elements.
La structure d'appui peut avantageusement être une tige dont une extrémité de liaison est solidaire de la seconde branche de second élément articulé, ladite tige étant incurvée en S selon une première concavité partant de l'extrémité de liaison et tournée vers l'extrémité libre de seconde branche, et selon une seconde concavité tournée vers l'extérieur dans la zone d'extrémité libre de tige. En alternative, la structure d'appui de seconde branche de manoeuvre peut être une tige transversale se terminant par une boule fixe ou rotative. La forme en boule favorise les appuis obliques du doigt, dans certaines positions. DESCRIPTION SOMMAIRE DES DESSINSThe support structure may advantageously be a rod, one connection end of which is integral with the second branch of a second articulated element, said rod being curved in S according to a first concavity starting from the connection end and facing the free end. second branch, and according to a second concavity facing outward in the free end of the rod area. As an alternative, the support structure of the second operating branch can be a transverse rod ending in a fixed or rotary ball. The ball shape promotes oblique finger presses in certain positions. SUMMARY DESCRIPTION OF THE DRAWINGS
D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles• - la figure 1 est une vue générale de face d'une paire de ciseaux selon un premier mode de réalisation de l'invention ;Other objects, characteristics and advantages of the present invention will emerge from the following description of particular embodiments, given in relation to the attached figures, among which • - Figure 1 is a general front view of a pair of scissors according to a first embodiment of the invention;
- la figure 2 est une vue de côté droit de la paire de ciseaux selon la figure 1, en coupe longitudinale selon l'axe I-I de la figure 1 ,FIG. 2 is a right side view of the pair of scissors according to FIG. 1, in longitudinal section along the axis I-I of FIG. 1,
- la figure 3 est une vue de face partielle illustrant une structure de second organe récepteur selon un second mode de réalisation de l'invention ;- Figure 3 is a partial front view illustrating a structure of second receiving member according to a second embodiment of the invention;
- la figure 4 est une vue de face partielle du second organe récepteur selon un troisième mode de réalisation de l'invention ;- Figure 4 is a partial front view of the second receiving member according to a third embodiment of the invention;
- la figure 5 est une vue de face partielle en coupe longitudinale du premier organe réceoteur selon un mode de réalisation de 1 ' invention , et - la figure 6 est une coupe transversale selon le plan A-A de la figure 5.- Figure 5 is a partial front view in longitudinal section of the first receiving member according to an embodiment of the invention, and - Figure 6 is a cross section along the plane A-A of Figure 5.
DESCRIPTION DES MODES DE REALISATION PREFERES Dans les modes de réalisation représentés sur les figures, l'outil à main selon l'invention est une paire de ciseaux. La paire de ciseaux comporte, de façon classique, un premier élément 1 et un second élément 2 articulés l'un à l'autre autour d'un axe commun intermédiaire 3. Le premier élément articulé 1 comprend une partie utile 4 sous forme d'une lame coupante avec un tranchant 5, qui se prolonge au-delà de l'axe commun intermédiaire 3 par une première branche 6 munie d'une premier organe récepteur 7 adapté pour la manoeuvre par l'extrémité d'un doigt de main d'un utilisateur De même, le second élément articulé 2 comprend une seconde partie utile 8 sous forme d'une lame coupante, avec un tranchant 9, la seconde lame coupante 8 se prolongeant, au-delà de l'axe commun intermédiaire 3, par une seconde branche 10 munie d'un second organe récepteur 11 également adapté pour la manoeuvre par l'extrémité d'un doigt de main d'un utilisateurDESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments shown in the figures, the hand tool according to the invention is a pair of scissors. The pair of scissors comprises, in a conventional manner, a first element 1 and a second element 2 articulated to each other around an intermediate common axis 3. The first articulated element 1 comprises a useful part 4 in the form of a cutting blade with a cutting edge 5, which extends beyond the intermediate common axis 3 by a first branch 6 provided with a first receiving member 7 adapted for operation by the end of a hand finger of a user Similarly, the second articulated element 2 comprises a second useful part 8 in the form of a cutting blade, with a cutting edge 9, the second cutting blade 8 extending, beyond the common intermediate axis 3, by a second branch 10 provided with a second receiving member 11 also suitable for operation by the end of a user's finger
Dans les modes de réalisation représentés, le premier organe récepteur 7 comprend un anneau 12 situé dans un plan sensiblement parallèle à l'axe longitudinal moyen II-II de la première branche 6. L'anneau 12 est légèrement décalé, dans le plan défini par les lames 4 et 8, vers l'extérieur à l'opposé de la seconde branche 10.In the embodiments shown, the first receiving member 7 comprises a ring 12 located in a plane substantially parallel to the mean longitudinal axis II-II of the first branch 6. The ring 12 is slightly offset, in the plane defined by the blades 4 and 8, outwardly opposite the second branch 10.
On peut prévoir un embout 13 engagé dans l'anneau 12. L'embout 13 constitue alors un organe récepteur généralement cylindrique dans lequel l'annulaire d'une main de l'utilisateur peut s'engager L'embout 13 du premier organe récepteur tel que représenté se compose d'un manchon 14 généralement cylindrique creux ouvert à ses deux extrémités, muni d'une collerette extérieure d'extrémité 15. La face périphérique extérieure 16 du manchon 14 présente un diamètre extérieur adapté pour être introduit axialement en force dans l'ouverture centrale de l'anneau 12 jusqu'à faire porter la collerette 15 en appui contre l'anneau 12. La face intérieure 17 du manchon, généralement cylindrique ou faiblement conique, présente un diamètre adapté pour recevoir axialement à faible jeu l'extrémité de l'annulaire de l'utilisateur.One can provide a tip 13 engaged in the ring 12. The tip 13 then constitutes a generally cylindrical receiving member in which the ring finger of a hand of the user can engage The tip 13 of the first receiving member such that represented consists of a generally hollow cylindrical sleeve 14 open at its two ends, provided with an external end flange 15. The external peripheral face 16 of the sleeve 14 has an external diameter adapted to be introduced axially by force into the central opening of the ring 12 until the flange 15 bears against the ring 12. The inner face 17 of the sleeve, generally cylindrical or slightly conical, has a diameter suitable for receiving the end axially with little play of the user's ring finger.
La longueur de l'embout 13 est, de préférence, telle que la longueur du passage tubulaire transversal 18 de premier organe récepteur 7 est comprise entre 10 et 30 millimètres environ. De bons résultats sont obtenus avec une longueur de 17 millimètres environ. On réalise ainsi un bon compromis entre un maintien suffisant du doigt dans l'organe réc ept≤ur et une liberté suffisante du doigt autorisant le fléchissement de ses articulations.The length of the endpiece 13 is preferably such that the length of the transverse tubular passage 18 of the first receiving member 7 is between 10 and 30 millimeters approximately. Good results are obtained with a length of about 17 millimeters. This achieves a good compromise between sufficient retention of the finger in the receptor organ and sufficient freedom of the finger allowing the flexing of its joints.
L'axe III-III de l'alésage central ou passage tubulaire transversal 18 de l'embout 13 est pivoté avantageusement d'un angle A par rapport à la perpendiculaire à l'axe longitudinal moyen II-II au premier élément articulé 1, dans le plan contenant l'axe longitudinal II-II et l'axe commun intermédiaire 3. L'angle A est avantageusement compris entreThe axis III-III of the central bore or transverse tubular passage 18 of the end piece 13 is advantageously pivoted by an angle A relative to the perpendicular to the mean longitudinal axis II-II to the first articulated element 1, in the plane containing the longitudinal axis II-II and the intermediate common axis 3. The angle A is advantageously between
10 et 20 degrés environ, dans le sens représenté sur les figures, sens dans lequel l'ouverture munie de la collerette 15 est plus éloignée des lames 4 et 8 que l'ouverture opposée à la collerette 15 L'angle A approprié est obtenu lorsque l'embout 13 est positionné dans l'anneau 12 selon une orientation axiale privilégiée, cette orientation pouvant être matérialisée par des repères respectifs ou tout autre moyen tel que des parties engageantes L'anneau 12 du premier élément articulé 1 est monté pivotant autour d'un axe longitudinal de pivotement 19 du premier élément articulé10 and 20 degrees approximately, in the direction shown in the figures, direction in which the opening provided with the flange 15 is further from the blades 4 and 8 than the opening opposite the flange 15 The appropriate angle A is obtained when the end piece 13 is positioned in the ring 12 according to a preferred axial orientation, this orientation being able to be materialized by respective marks or any other means such as engaging parts The ring 12 of the first articulated element 1 is pivotally mounted around a longitudinal pivot axis 19 of the first articulated element
1, de façon à pouvoir orienter l'anneau 12 autour dudit axe longitudinal de pivotement 19. Pour cela, l'anneau 12 du premier organe récepteur 7 est relié à la première branche correspondante 6 par une articulation 30 à axe longitudinal de pivotement 19. 1 , so as to be able to orient the ring 12 around said longitudinal axis for pivoting 19. For this, the ring 12 of the first receiving member 7 is connected to the first corresponding branch 6 by an articulation 30 with a longitudinal pivot axis 19.
Selon l'invention, des butées limitent le pivotement de l'anneau 12 du premier organe récepteur 7 autour de l'axe de pivotement longitudinal 19 entre une première position extrême, représentée sur les figures 1 et 2, dans laquelle l'anneau 12 est sensiblement dans le plan perpendiculaire à l'axe commun intermédiaire 3, et une seconde position extrême dans laquelle l'anneau 12 est pivoté à l'écart de la première position dans le sens de rotation tel que la face 31 par laquelle le doigt s'engage dans l'anneau 12 est orientée vers l'extérieur, à l'écart du second élément articulé 2. Des moyens de rappel élastique 20 sollicitent en rotation l'anneau 12 autour de l'axe de pivotement longitudinal 19 pour le ramener en première position. Les figures 5 et 6 illustrent un mode de réalisation avantageux de l'articulation 30. Dans ce mode de réalisation, l'anneau 12 est solidaire d'un manche axial 32 engagé à pivotement dans un alésage axial 33 correspondant de la première branche 6 de manoeuvre. Le manche axial 32 comporte une excroissance radiale 34 engagée dans un logement sectoriel 35 de l'alésage axial 33 dont les faces d'extrémité 36 et 37 (figure 6) forment butées contre lesquelles vient sélectivement en appui l'excroissance radiale 34 de manche axial 32 dans les positions extrêmes respectives de l'anneau 12 du premier organe récepteur 7. Sur la figure 6 , le manche axial 32 est représenté en première position extrême, correspondant à la position illustrée sur les figures 1 et 2. Dans cette première position extrême, l'excroissance radiale 34 est en appui contre la première face d'extrémité 36 du logement sectoriel 35. A partir de cette position, le manche axial 32, et l'anneau 12 qui lui est solidaire, peuvent pivoter autour de l'axe longitudinal de pivotement 19 dans le sens de la flèche 38, jusqu'à la seconde position extrême dans laquelle l'excroissance radiale 34 vient en appui contre la seconde face d'extrémité 37 formant butée.According to the invention, stops limit the pivoting of the ring 12 of the first receiving member 7 around the longitudinal pivot axis 19 between a first extreme position, shown in FIGS. 1 and 2, in which the ring 12 is substantially in the plane perpendicular to the intermediate common axis 3, and a second extreme position in which the ring 12 is pivoted away from the first position in the direction of rotation such as the face 31 by which the finger s' engaged in the ring 12 is oriented towards the outside, away from the second articulated element 2. Elastic return means 20 rotate the ring 12 around the longitudinal pivot axis 19 to bring it back in first position. FIGS. 5 and 6 illustrate an advantageous embodiment of the articulation 30. In this embodiment, the ring 12 is integral with an axial handle 32 pivotally engaged in a corresponding axial bore 33 of the first branch 6 of maneuver. The axial handle 32 has a radial protrusion 34 engaged in a sectoral housing 35 of the axial bore 33 whose end faces 36 and 37 (Figure 6) form abutments against which selectively bears the radial protrusion 34 of the axial handle 32 in the respective extreme positions of the ring 12 of the first receiving member 7. In FIG. 6, the axial handle 32 is shown in the first extreme position, corresponding to the position illustrated in FIGS. 1 and 2. In this first extreme position , the radial projection 34 is in abutment against the first end face 36 of the sectoral housing 35. From this position, the axial handle 32, and the ring 12 which is integral with it, can pivot around the axis longitudinal pivot 19 in the direction of arrow 38, to the second extreme position in which the radial projection 34 comes to bear against the second end face 37 forming a stop.
L'amplitude de pivotement de l'anneau 12 est fixée par les positions relatives des faces d'extrémité 36 et 37, et par le développement angulaire de l'excroissance radiale 34. Dans le mode de réalisation illustré sur la figure 6, l'amplitude de pivotement est d'environ 90 degrés On pourra trouver avantage à prévoir une amplitude de pivotement d'anneau 12, autour de son axe de pivotement longitudinal 19, qui soit inférieure à 90 degrés environThe amplitude of pivoting of the ring 12 is fixed by the relative positions of the end faces 36 and 37, and by the angular development of the radial protuberance 34. In the embodiment illustrated in FIG. 6, the swivel amplitude is about 90 degrees It may be advantageous to provide an amplitude of ring pivot 12, about its longitudinal pivot axis 19, which is less than about 90 degrees
Dans le mode de réalisation de la figure 5, les moyens de rappel élastique comprennent un ressort hélicoïdal de torsion 20, logé dans l'alésage axial 33 en prolongement du manche axial 32, et dont les extrémités 39 et 40 sont engagées respectivement dans le manche axial 32 d'une part et dans la paroi de première branche de manoeuvre 6 d'autre partIn the embodiment of FIG. 5, the elastic return means comprise a helical torsion spring 20, housed in the axial bore 33 in extension of the axial handle 32, and the ends 39 and 40 of which are engaged respectively in the handle axial 32 on the one hand and in the wall of the first operating branch 6 on the other hand
Dans ce même mode de réalisation de la figure 5, le manche axial 32 d'anneau 12 est retenu sur la première branche 6 de manoeuvre par une vis 41, dont la tige 42 traverse un trou axial 43 du manche 32 et se visse dans un insert 44 formant une extrémité taraudée de l'alésage axial 33 de première branche 6, et dont la tête 45 porte contre un epaulement 46 du trou axial 43 Dans le mode de réalisation illustré sur cette même figure 5, un espace annulaire 47 est ménagé entre un epaulement externe 48 du manche axial 32 d'anneau 12 et le bord d'extrémité 49 de la première branche 6 de manoeuvre. Une bague annulaire 50 en matière élastique est engagée dans ledit espace annulaire 47 et dépasse radialement à l'extérieur dudit espace annulaire 47 pour former butée d'amortissement contre laquelle vient porter la seconde branche 11 d'outil en fin de course de pivotement des éléments articulés 1 et 2In this same embodiment of FIG. 5, the axial handle 32 of the ring 12 is retained on the first operating branch 6 by a screw 41, the rod 42 of which passes through an axial hole 43 of the handle 32 and is screwed in a insert 44 forming a threaded end of the axial bore 33 of the first branch 6, and the head 45 of which bears against a shoulder 46 of the axial hole 43 In the embodiment illustrated in this same FIG. 5, an annular space 47 is provided between an external shoulder 48 of the axial handle 32 of the ring 12 and the end edge 49 of the first operating branch 6. An annular ring 50 of elastic material is engaged in said annular space 47 and protrudes radially outside of said annular space 47 to form a damping stop against which the second tool branch 11 comes to bear at the end of the pivoting stroke of the elements. articulated 1 and 2
De préférence, l'articulation 30 du premier organe récepteur 7 est proche du passage tubulaire transversal 18 ou de l'anneau 12 L'index et le majeur de la main tenant l'outil peuvent ainsi reposer sur une portion fixe de première branche 6. La rotation de phalange d'annulaire engagée dans le premier organe récepteur 7 n'entraîne ainsi pas la rotation des phalanges voisines d'index et de majeur. Le confort et la tenue sont améliorés. On peut prévoir un jeu de plusieurs embouts tels que l'emboutPreferably, the articulation 30 of the first receiving member 7 is close to the transverse tubular passage 18 or to the ring 12 The index and middle finger of the hand holding the tool can thus rest on a fixed portion of the first branch 6. The rotation of the phalanx of the ring finger engaged in the first receiving member 7 does not therefore cause the rotation of the phalanges adjacent to the index and middle fingers. Comfort and hold are improved. We can provide a set of several tips such as the tip
13, comportant chacun la même forme extérieure et notamment le même diamètre de face extérieure 16 et la même collerette 15, et comportant des diamètres de face intérieure 17 différents, pour s'adapter à des tailles différentes d'annulaires L'embout 13 est simplement engagé en force dans l'anneau 12, de sorte que l'interchangeabilité est simplifiée13, each having the same outer shape and in particular the same outer face diameter 16 and the same flange 15, and having different inner face diameters 17, to adapt to different sizes of annulars The end piece 13 is simply forcibly engaged in the ring 12, so that the interchangeability is simplified
En prévoyant un anneau 12 dont la forme est sensiblement symétrique par rapport à son plan, on peut introduire indifféremment le même embout 13 par l'une ou l'autre des deux faces de l'anneau 12, définissant respectivement un outil pour droitier et un outil pour gaucherBy providing a ring 12 whose shape is substantially symmetrical with respect to its plane, it is possible to introduce the same tip 13 by one or the other of the two faces of the ring 12, respectively defining a tool for right-handed and a tool for left-handed
L'embout 13 est destiné à former un guide dans lequel l'extrémité de l'annulaire est engagée L'outil doit ainsi tenir suffisamment en position, maintenu par le seul annulaire, sans possibilité de translation axiale ou de rotation axiale de l'outil autour de l'annulaire. Pour cela, le manchon 14 de l'embout 13 doit avoir un diamètre intérieur suffisamment proche du diamètre extérieur de l'annulaire de l'utilisateur, pour qu'un frottement suffisant existe entreThe end piece 13 is intended to form a guide in which the end of the annular is engaged. The tool must thus hold sufficiently in position, held by the annular alone, without the possibility of axial translation or axial rotation of the tool. around the ring finger. For this, the sleeve 14 of the endpiece 13 must have an internal diameter sufficiently close to the external diameter of the user's ring finger, so that sufficient friction exists between
1 'annulaire et la manchon 14 II ne faut cependant pas que 1 'annulaire soit serré trop violemment dans le manchon 14, pour éviter la gêne liée à la transpiration et à la coupure de circulation sanguine. Le manchon 14 peut avantageusement être réalisé en une matière légèrement élastique, favorisant l'adhérence entre le manchon 14 et l'annulaire sans nécessiter un serrage trop important. La longueur du manchon 14 est sensiblement égaie à son diamètre.1 annular and the sleeve 14 It should not however that 1 annular is tightened too violently in the sleeve 14, to avoid discomfort related to perspiration and cut blood circulation. The sleeve 14 can advantageously be made of a slightly elastic material, promoting adhesion between the sleeve 14 and the ring finger without requiring excessive tightening. The length of the sleeve 14 is substantially equal to its diameter.
La surface intérieure du manchon 14 peut avantageusement comporter des irrégularités telles que nervures et rainures, alvéoles, bossages, favorisant l'aération de la peau au contact dudit manchonThe inner surface of the sleeve 14 can advantageously include irregularities such as ribs and grooves, cells, bosses, favoring the ventilation of the skin in contact with said sleeve
Dans le mode de réalisation représenté, la première branche 6 du premier élément 1 se prolonge, au-delà de l'anneau 12, à l'opposé de l'axe commun intermédiaire 3, par un prolongement 21 muni d'une face d'appui 22 proche de l'axe longitudinal II-II de la première branche. La face d'appui 22 est destinée à être orientée, par pivotement de l'anneau 12 autour de son axe longitudinal de pivotement 19, à l'opposé de la seconde branche 10 de second élément articulé 2. La face d'appui 22 permet à l'utilisateur de laisser reposer, contre ladite face 22, son auriculaire adjacent à l'annulaire introduit dans l'embout 13 Le second organe récepteur 11, monté sur le second élément articulé 2, comprend une partie longitudinale d'extrémité 23 de seconde branche 10, et une structure d'appui 24 transversale se développant sensiblement dans le plan de pivotement des éléments articulés 1 et 2 a l'opposé du premier élément articulé 1, comme le représente la figure 1 Ainsi, le second organe récepteur 11 est fixe et ouvert. La structure d'appui 24 comprend une face d'appui 124 généralement concave orientée vers l'extrémité libre 26 de seconde branche 10 La structure d'appui 24 représentée sur la figure 1 est une tige dont une extrémité 25 est solidaire de la seconde branche 10 de second élément 2 articulé, ladite tige étant incurvée en arc selon une concavité tournée vers l'extrémité libre 26 de seconde branche 10, et selon un rayon supérieur au rayon moyen d'un pouce d'utilisateur. La structure d'appui forme avantageusement un arc de cercle d'environ 90 degrés, et la face d'appui 124 postérieure présente un profil transversal convexeIn the embodiment shown, the first branch 6 of the first element 1 is extended, beyond the ring 12, opposite the intermediate common axis 3, by an extension 21 provided with a face of support 22 close to the longitudinal axis II-II of the first branch. The support face 22 is intended to be oriented, by pivoting of the ring 12 around its longitudinal pivot axis 19, opposite the second branch 10 of the second articulated element 2. The support face 22 allows the user to let rest against said face 22, his little finger adjacent to the ring finger inserted in the end piece 13 The second receiving member 11, mounted on the second articulated element 2, comprises a longitudinal end portion 23 seconds branch 10, and a transverse support structure 24 developing substantially in the pivoting plane of the articulated elements 1 and 2 opposite the first articulated element 1, as shown in Figure 1 Thus, the second receiving member 11 is fixed and open. The support structure 24 comprises a generally concave support face 124 oriented towards the free end 26 of the second branch 10 The support structure 24 shown in Figure 1 is a rod, one end 25 of which is integral with the second branch 10 of the second articulated element 2, the said rod being curved in an arc according to a concavity turned towards the free end 26 of the second branch 10, and along a radius greater than the average radius of one inch of the user. The support structure advantageously forms an arc of a circle of about 90 degrees, and the posterior support face 124 has a convex transverse profile.
La structure d'appui 24 représentée sur la figure 3 est une tige transversale dont la première extrémité 25 est solidaire de la seconde branche 10 de second élément 2 articulé, et se terminant par une boule 51 fixe ou rotative. De préférence, la partie longitudinale d'extrémité 23 comporte une face d'appui 52 concaveThe support structure 24 shown in FIG. 3 is a transverse rod, the first end 25 of which is integral with the second branch 10 of the second articulated element 2, and ending in a ball 51 fixed or rotary. Preferably, the longitudinal end portion 23 has a concave bearing face 52
La structure d'appui 24 représentée sur la figure 4 est une tige transversale incurvée en arc, dont la face d'appui 124 postérieure présente un profil transversal convexe et un profil longitudinal à concavité régulière tournée vers l'extrémité libre 26 de seconde brancheThe support structure 24 shown in FIG. 4 is an arcuate curved transverse rod, the posterior support face 124 of which has a convex transverse profile and a longitudinal profile with regular concavity facing the free end 26 of the second branch.
10, et se raccordant tangentiellement à une face d'appui 52 concave de la partie longitudinale d'extrémité 23 Des striures peuvent être prévues sur les faces d'appui. La partie longitudinale d'extrémité 23 de seconde branche 10 a une longueur sensiblement égale au diamètre moyen d'un pouce d'utilisateur, pour constituer une zone d'appui de longueur suffisante pour l'appui du pouce Cette partie longitudinale d'extrémité 23 de seconde branche 10 se termine par une extrémité libre 26 en biais, en retrait de l'anneau 12 lorsque l'outil est fermé, comme le représente en traits mixtes la figure 1 Une seconde branche 10 courte et légère, en matière plastique, favorise le rappel automatique de l'outil en position fermée, par l'effet de la pesanteur10, and tangentially connecting to a concave bearing face 52 of the longitudinal end portion 23 Striations may be provided on the bearing faces. The longitudinal end portion 23 of the second branch 10 has a length substantially equal to the average diameter of a user inch, to constitute a support zone of sufficient length for the support of the thumb This longitudinal end portion 23 second branch 10 ends with a free end 26 at an angle, set back from the ring 12 when the tool is closed, as shown in dashed lines in Figure 1 A second branch 10 short and light, made of plastic, favors the automatic return of the tool to the closed position, by the effect of gravity
La distance séparant la structure d'appui 24 de l'axe commun intermédiaire 3 est inférieure à la distance séparant l'anneau 12 du même axe commun intermédiaire 3 Ainsi, l'utilisateur peut tenir l'outil en engageant l'extrémité de son annulaire dans l'embout 13 de l'anneau 12 et en engageant 1 'extrémité de son pouce en appui à la fois sur la face extérieure de la partie longitudinale d'extrémité 23 de seconde branche 10 et sur la face concave de structure d'appui 24 la plus proche de l'extrémité libre 26 de seconde branche 10 Dans le mode de réalisation des figures 1 et 2, les parties utiles 4 et 8 sont des lames de ciseaux, à partie métallique coupante. La première partie métallique coupante 104 est solidarisée à la face intérieure d'une portion 106 de première branche 6 de manoeuvre en matière plastique moulée Par contre, la seconde partie métallique coupante 108 est dépourvue de partie en matière plastique, pour présenter une épaisseur réduite telle qu'illustrée sur la figure 2.The distance separating the support structure 24 from the intermediate common axis 3 is less than the distance separating the ring 12 from the same intermediate common axis 3 Thus, the user can hold the tool by engaging the end of his ring finger in the end-piece 13 of the ring 12 and by engaging the end of his thumb in abutment both on the external face of the longitudinal end portion 23 of the second branch 10 and on the concave face of the support structure 24 closest to the free end 26 of second branch 10 In the embodiment of FIGS. 1 and 2, the useful parts 4 and 8 are scissor blades, with a cutting metal part. The first cutting metal part 104 is secured to the inner face of a portion 106 of the first operating branch 6 of molded plastic material. On the other hand, the second cutting metal part 108 is devoid of plastic part, in order to have a reduced thickness such that as illustrated in Figure 2.
Bien que la description qui précède porte sur un mode de réalisation représentant une paire de ciseaux, l'invention s'applique également à un outil à main dans lequel les lames 4 et 8 sont remplacées par des pinces. En effet, avec une paire de pinces, on peut tout aussi bien utiliser les possibilités d'orientation et de manoeuvre de l'outilAlthough the above description relates to an embodiment representing a pair of scissors, the invention also applies to a hand tool in which the blades 4 and 8 are replaced by pliers. Indeed, with a pair of pliers, one can just as easily use the possibilities of orientation and operation of the tool
La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof contained in the field of claims below.

Claims

REVENDICATIONS 1 - Outil à main tel qu'une paire de ciseaux ou une paire de pinces, notamment une paire de ciseaux pour la coupe de cheveux, comportant un premier (1) et un second (2) éléments articulés entre eux autour d'un axe commun intermédiaire (3) , chaque élément (1, 2) comprenant une partie utile (4, 8) telle qu'une lame coupante ou une tête de pince, le premier élément (1) comprenant une première branche (6) de manoeuvre munie d'un premier organe récepteur (7) fermé à anneau (12) adapté pour l'engagement transversal de l'extrémité d'un doigt de main d'un utilisateur, l'anneau (12) pouvant pivoter autour d'un axe de pivotement longitudinal (19) de la première branche (6) de manoeuvre, le second élément articulé (2) comprenant une seconde branche (10) de manoeuvre comportant un second organe récepteur (11) fixe et ouvert à partie longitudinale d'extrémité (23) associée à une structure d'appui (24) transversale se développant sensiblement dans le plan de pivotement des éléments articulés (1, 2) à l'opposé du premier élément articulé (1), la structure d'appui (24) présentant une face d'appui (124) concave orientée vers l'extrémité libre (26) de seconde branche (10), caractérisé en ce que : - des butées (36, 37) limitent le pivotement de l'anneau (12) autour de l'axe de pivotement longitudinal (19) entre une première position extrême dans laquelle l'anneau (12) est sensiblement dans le plan perpendiculaire à l'axe commun intermédiaire (3) et une seconde position extrême dans laquelle l'anneau (12) est pivoté à l'écart de la première position dans le sens de rotation tel que la face (31) par laquelle le doigt s'engage dans l'anneau (12) est orientée vers l'extérieur,CLAIMS 1 - Hand tool such as a pair of scissors or a pair of pliers, in particular a pair of scissors for haircutting, comprising a first (1) and a second (2) elements articulated together around a common intermediate axis (3), each element (1, 2) comprising a useful part (4, 8) such as a cutting blade or a pliers head, the first element (1) comprising a first operating branch (6) provided with a first closed receiving member (7) with ring (12) adapted for the transverse engagement of the end of a user's finger, the ring (12) being able to pivot about an axis for longitudinal pivoting (19) of the first operating branch (6), the second articulated element (2) comprising a second operating branch (10) comprising a second fixed and open receiving member (11) with a longitudinal end part ( 23) associated with a transverse support structure (24) developing substantially in the plane pivoting of the articulated elements (1, 2) opposite the first articulated element (1), the support structure (24) having a concave support face (124) oriented towards the free end (26) of second branch (10), characterized in that: - stops (36, 37) limit the pivoting of the ring (12) around the longitudinal pivot axis (19) between a first extreme position in which the ring (12) is substantially in the plane perpendicular to the intermediate common axis (3) and a second extreme position in which the ring (12) is pivoted away from the first position in the direction of rotation such that the face (31) by which the finger engages in the ring (12) is oriented towards the outside,
- des moyens de rappel élastique (20) sollicitent en rotation l'anneau (12) autour de l'axe de pivotement longitudinal (19) pour le ramener en première position. 2 - Outil selon la revendication 1, caractérisé en ce que l'amplitude de pivotement de l'anneau (12) autour de l'axe de pivotement longitudinal (19) entre les butées (36, 37) est inférieure à 90 degrés environ.- elastic return means (20) rotate the ring (12) around the longitudinal pivot axis (19) to return it to the first position. 2 - Tool according to claim 1, characterized in that the pivoting amplitude of the ring (12) around the longitudinal pivot axis (19) between the stops (36, 37) is less than about 90 degrees.
3 - Outil selon l'une des revendications 1 ou 2, caractérisé en ce que l'anneau (12) est solidaire d'un manche axial (32) , engagé à pivotement dans un alésage axial (33) correspondant de la première branche3 - Tool according to one of claims 1 or 2, characterized in that the ring (12) is integral with an axial handle (32), pivotally engaged in a corresponding axial bore (33) of the first branch
(6) de manoeuvre, le manche (32) comportant une excroissance radiale (34) engagée dans un logement sectoriel (35) d'alésage (33) dont les faces d'extrémité (36, 37) forment butées contre lesquelles vient sélectivement en appui l'excroissance radiale (34) de manche axial (32) dans les positions extrêmes respectives de l'anneau (12) 4 - Outil selon la revendication 3, caractérisé en ce que les moyens de rappel élastique comprennent un ressort hélicoïdal de torsion( 6 ) for maneuvering, the handle (32) comprising a radial projection (34) engaged in a sectoral housing (35) of bore (33) whose end faces (36, 37) form abutments against which selectively bears the radial protrusion (34) of the axial handle (32) in the extreme positions respective ring (12) 4 - Tool according to claim 3, characterized in that the elastic return means comprise a helical torsion spring
(20) , logé dans l'alésage axial (33) en prolongement du manche axial (32), et dont les extrémités (39, 40) sont engagées respectivement dans le manche axial (32) d'une part et dans la paroi de première branche (6) de manoeuvre d'autre part(20), housed in the axial bore (33) as an extension of the axial handle (32), and the ends (39, 40) of which are engaged respectively in the axial handle (32) on the one hand and in the wall of first operating branch (6) on the other hand
5 - Outil selon l'une des revendications 3 ou 4, caractérisé en ce que le manche axial (32) d'anneau (12) est retenu sur la première branche (6) de manoeuvre par une vis (41) dont la tige (42) traverse un trou axial (43) du manche (32) et se visse dans une extrémité taraudée (44) de l'alésage (33) de première branche (6), et dont la tête (45) porte contre un epaulement (46) du trou axial (43)5 - Tool according to one of claims 3 or 4, characterized in that the axial handle (32) of ring (12) is retained on the first branch (6) for operation by a screw (41) whose rod ( 42) passes through an axial hole (43) of the handle (32) and is screwed into a threaded end (44) of the bore (33) of the first branch (6), and the head (45) of which bears against a shoulder ( 46) of the axial hole (43)
6 - Outil selon l'une quelconque des revendications 3 à 5, caractérisé en ce qu'un espace annulaire (47) est ménagé entre un epaulement externe (48) de manche axial (32) d'anneau et le bord d'extrémité (49) de la première branche (6) de manoeuvre, et une bague annulaire (50) en matière élastique est engagée dans ledit espace annulaire (47) et dépasse radialement à l'extérieur dudit espace pour former butée d'amortissement contre laquelle vient porter la seconde branche (11) d'outil en fin de course de pivotement des éléments articulés (1, 2)6 - Tool according to any one of claims 3 to 5, characterized in that an annular space (47) is formed between an external shoulder (48) of axial sleeve (32) ring and the end edge ( 49) of the first operating branch (6), and an annular ring (50) of elastic material is engaged in said annular space (47) and protrudes radially outside of said space to form a damping stop against which comes to bear the second tool branch (11) at the end of the pivoting stroke of the articulated elements (1, 2)
1 - Outil selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la structure d'appui (24) est une tige dont une extrémité (25) de liaison est solidaire de la seconde branche (10) de second élément articulé (2) , ladite tige étant incurvée en S selon une première concavité partant de l'extrémité (25) de liaison et tournée vers l'extrémité libre (26) de seconde branche (10), et selon une seconde concavité tournée vers l'extérieur dans la zone d'extrémité libre de tige1 - Tool according to any one of claims 1 to 6, characterized in that the support structure (24) is a rod, one end (25) of connection is integral with the second branch (10) of second articulated element (2), said rod being curved in S according to a first concavity starting from the end (25) of connection and facing towards the free end (26) of the second branch (10), and according to a second concavity facing towards outside in the free rod end area
8 - Outil selon l'une quelconque des revendications 1 a 6, caractérisé en ce que la structure d'appui (24) de seconde branche (10) de manoeuvre est une tige transversale se terminant par une boule (51) fixe ou rotative 9 - Outil selon l'une quelconque des revendications 1 a 8, caractérisé en ce que la partie longitudinale d'extrémité (23) comporte une face d'appui (52) concave8 - Tool according to any one of claims 1 to 6, characterized in that the support structure (24) of the second branch (10) of operation is a transverse rod ending in a ball (51) fixed or rotary 9 - Tool according to any one of claims 1 to 8, characterized in that the longitudinal end part (23) has a concave bearing face (52)
10 - Outil selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les parties utiles (4, 8) sont des lames de ciseaux, a partie métallique coupante, la première partie métallique coupante (104) de premier élément articulé (1) étant solidarisée à la face intérieure d'une portion (106) de première branche (6) de manoeuvre en matière plastique moulée, la seconde partie métallique coupante (108) de second élétlent articulé étant dépourvue de partie en matière plastique pour présenter une épaisseur réduite. 10 - Tool according to any one of claims 1 to 9, characterized in that the useful parts (4, 8) are scissor blades, has a metal cutting part, the first metal cutting part (104) of the first articulated element ( 1) being secured to the inner face of a portion (106) of the first branch (6) of operating in molded plastic material, the second metal cutting part (108) of second articulated element being devoid of plastic part to present a reduced thickness.
PCT/FR1997/000951 1996-06-04 1997-06-02 Handtool such as scissors with pivoting gripper member and spring return means WO1997046353A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR96/07027 1996-06-04
FR9607027A FR2749208B1 (en) 1996-06-04 1996-06-04 HAND TOOL SUCH AS A PAIR OF PIVOTING AND ELASTICALLY GRIPPED ORGAN SCISSORS

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WO1997046353A1 true WO1997046353A1 (en) 1997-12-11

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WO (1) WO1997046353A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
KR200456498Y1 (en) * 2009-02-03 2011-11-02 박성근 Variable Length Beauty Scissors
JP5943498B1 (en) * 2015-04-08 2016-07-05 株式会社ヒカリ Barber

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
US6247385B1 (en) * 2000-03-09 2001-06-19 Arthur Wu Rotatable tool handle having a recovery device
DE102007016498B4 (en) * 2007-03-26 2008-11-20 Aesculap Ag Surgical instrument handle and surgical instrument
FR2923408B1 (en) 2007-11-12 2009-11-20 Maped SCISSORS WITH HANDLES WITH SOFT RINGS

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DE75399C (en) * R. KIRSCHNER in Solingen Scissors with blades sharpened on both sides
US2380075A (en) * 1944-09-16 1945-07-10 Rose Edward Attachment for scissors or shears
US3906630A (en) * 1974-04-10 1975-09-23 Jaguar Stahlwaren Vertrieb Scissors, particularly hairdressers{3 {0 scissors
GB2229128A (en) * 1989-03-14 1990-09-19 Nt Inc Scissors for both right and left handed use
WO1992012832A1 (en) * 1991-01-15 1992-08-06 Societe Financiere Des Bastions Sa Hand tool such as pair of scissors or pliers
DE4140425C1 (en) * 1991-12-07 1992-08-27 Pietro Cecina Mare Livorno It Poggetti Hair cutting scissors of two elongated halves - has each blade with two cutting edges in cutting plane with mutual orthogonal spacing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE75399C (en) * R. KIRSCHNER in Solingen Scissors with blades sharpened on both sides
US2380075A (en) * 1944-09-16 1945-07-10 Rose Edward Attachment for scissors or shears
US3906630A (en) * 1974-04-10 1975-09-23 Jaguar Stahlwaren Vertrieb Scissors, particularly hairdressers{3 {0 scissors
GB2229128A (en) * 1989-03-14 1990-09-19 Nt Inc Scissors for both right and left handed use
WO1992012832A1 (en) * 1991-01-15 1992-08-06 Societe Financiere Des Bastions Sa Hand tool such as pair of scissors or pliers
DE4140425C1 (en) * 1991-12-07 1992-08-27 Pietro Cecina Mare Livorno It Poggetti Hair cutting scissors of two elongated halves - has each blade with two cutting edges in cutting plane with mutual orthogonal spacing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200456498Y1 (en) * 2009-02-03 2011-11-02 박성근 Variable Length Beauty Scissors
JP5943498B1 (en) * 2015-04-08 2016-07-05 株式会社ヒカリ Barber
WO2016162985A1 (en) * 2015-04-08 2016-10-13 株式会社ヒカリ Scissors for hairdressing
KR101822020B1 (en) 2015-04-08 2018-01-25 가부시키가이샤 히카리 Hairdressing scissors

Also Published As

Publication number Publication date
FR2749208B1 (en) 1998-07-17
FR2749208A1 (en) 1997-12-05

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