EP3280570B1 - Pair of scissors, particularly for cutting hair - Google Patents

Description

The invention relates to a pair of scissors, in particular for haircuts.

It relates more particularly to a pair of scissors comprising two scissors movably mounted to pivot about an axis between a closed position and an open position of the pair of scissors, each of said scissors comprising an extended blade of a branch, said blades extending in the closed position of the pair of scissors along an axis called the longitudinal axis of the pair of scissors, one of the branches, said first branch, being arranged at least partially in a plane forming with the plane passing through the longitudinal axis of the pair of scissors and the pivot axis an angle A of between 35 ° and 60 ° and being over at least a part of its length, from its zone of connection to the blade towards its free end, separated from the plane of displacement of the blades of an angle B at least equal to 35 °, this first branch being recoverable at least partially from a cavity in the form of an elongated body adapted to be inserted transverse between two fingers, usually the annular and middle fingers of a hand, to a bearing position in the connecting hollow between said fingers, this impression being provided with a lateral opening and at the end the body adjacent to said opening, a bearing zone of a phalanx distal from at least one of the fingers between which said fingerprint is adapted to be inserted, the other branch said second branch being terminated by a half-ring forming a cradle for receiving the thumb.

Such a pair of scissors is known in particular through the patent FR 2 955 284 . Because of its design, this pair of scissors allows the hand to remain in the extension of the wrist, and thus limit hand / wrist movements during cutting operations, reducing the risk of musculoskeletal disorders.

This pair of scissors also makes it possible to limit, for the operator, the recourse uncomfortable and potentially traumatic postures.

An object of the invention is to provide an improvement to the aforementioned pair of scissors, to facilitate the adaptation of said pair of scissors to a large number of hands, without harming the other qualities of said pair of scissors.

For this purpose, the subject of the invention is a pair of scissors, in particular for haircuts, comprising two scissors mounted to pivot about an axis, each of said scissors comprising an extended blade of a branch, said blades being extending in the closed position of the pair of scissors along an axis, called the longitudinal axis, of the pair of scissors, one of the branches said first branch being disposed at least partially in a plane forming with the plane passing through the longitudinal axis of the pair of scissors and the pivot axis an angle A of between 35 ° and 60 ° and being, over at least part of its length, from its zone of connection to the blade towards its free end, spaced apart from the plane of movement of the blades of an angle B at least equal to 35 °, this first branch being able to be covered at least partially with a footprint in the form of an elongated body adapted to be inserted transversely between two d eyelets, generally the annular and middle fingers, with one hand to a bearing position in the connecting recess between said fingers, this impression being provided with a lateral opening and at the end of the body adjacent to said opening, a zone of support of a distal phalanx of at least one of the fingers between which said fingerprint is adapted to be inserted, the other branch, said second branch, being terminated by a half-ring forming a cradle for receiving the thumb, characterized in that the first branch of rectangular or square cross section is a bent branch with the portion said second portion of the first branch disposed between the free end and the elbow of said branch forming an angle between 80 ° and 120 °, with the portion said first portion of the first branch disposed between the elbow and the connection area of the first branch to the blade, in that the elastically deformable impression f elm, with its lateral opening which extends towards the interior of the impression, a sheath inside which minus the second portion of the first leg is slidably insertable into position by sliding movement and in that the end of the cradle closest to the first leg is bent towards the inside of the cradle to form a stop of thumb restraint.

The production of the first branch in the form of a bent limb, and the sliding installation of the impression on said first limb make it possible, by cooperation of the impression and the first limb, to vary the relative position of the zone. finger support provided by the fingerprint to allow the reception of larger or longer fingers or the reception of two fingers, such as the middle finger and the index finger, instead of a single finger, for s' adapt to certain cutting techniques.

Meanwhile, the presence of a thumb stop at the second leg allows a better transmission of effort between hand and pair of scissors, the risk of sliding of the thumb out of the cradle being reduced.

Preferably, the first portion of the first branch has a length at least equal to 1.5 cm.

In one embodiment, the retaining stop is made in the form of an insert on said cradle.

Alternatively, the cradle and the retaining stop are made in one piece.

Preferably, said cradle, disposed in a plane parallel to the plane of movement of the blades, defines a portion of circle of center O and the line passing through the center of the circle and the point of intersection of the pivot and longitudinal axes of the blades forms with the longitudinal axis of the pair of scissors at an angle of at least 20 °.

Preferably, the distance between the center of the portion of the circle delimited by the cradle and the point of intersection of the pivot and longitudinal axes of the blades is at least equal to 3.5 cm.

Preferably, the second portion of the first branch is curved with the concavity of the curve turned towards the plane of movement of the blades.

Preferably, the imprint and the first branch each comprise a marking forming an insertion mark of the first branch inside the cavity. This marking facilitates the sliding movement of the first branch inside the cavity.

Preferably, the impression is a rubber or an elastomer preferably chosen from the group formed by a silicone, a nitrile, an ethylene-propylene-diene monomer (epdm) or a polyurethane with a hardness range of between 60 and 80 shores. AT.

• La figure 1 représente une vue en perspective en élévation d'une paire de ciseaux conforme à l'invention.
• La figure 2 représente une vue partielle d'une paire de ciseaux avec l'empreinte et la pièce rapportée équipée de la butée de retenue représentées à l'état non monté.
• La figure 3 représente, sous forme de deux vues partielles de dessus de la deuxième branche, deux modes de réalisation de la butée de retenue.
• La figure 4 représente, sous forme de trois vues partielles de la première branche, des exemples de positions aptes à être prises par la première branche à l'intérieur du fourreau que forme l'empreinte.
• La figure 5 représente une vue partielle de côté d'une paire de ciseaux, l'empreinte ayant été omise.
• La figure 6 représente une vue partielle prise depuis l'arrière d'une paire de ciseaux, l'empreinte ayant été omise.
• Les figures 7 et 8 représentent, sous forme de vues partielles schématiques, les étapes de saisie de la paire de ciseaux à l'aide d'une main.

The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:

• The figure 1 represents a perspective view in elevation of a pair of scissors according to the invention.
• The figure 2 is a partial view of a pair of scissors with the impression and the insert fitted with the stopper shown in the unassembled state.
• The figure 3 represents, in the form of two partial top views of the second branch, two embodiments of the retaining stop.
• The figure 4 represents, in the form of three partial views of the first branch, examples of positions that can be taken by the first branch inside the sleeve that forms the imprint.
• The figure 5 is a partial side view of a pair of scissors, the impression has been omitted.
• The figure 6 represents a partial view taken from the back of a pair of scissors, the impression having been omitted.
• The Figures 7 and 8 represent, in the form of partial schematic views, the steps of entering the pair of scissors with the aid of a hand.

As mentioned above, the subject of the invention is a pair 1 of scissors, more particularly intended for haircuts. This pair 1 of scissors comprises two scissors 2. Each scissors 2 comprises a cutting blade 3 extended by a branch. One of the branches, called the first branch, is represented in 4 in the figures, while the other branch called second branch is shown in 5 in the figures.

Said scissors 2 are mounted via a movable pivot connection pivotable about an x axis for the passage of said scissor blades from a close position partially overlapping in the closed position of the pair of scissors to a remote position one of the other in the open position of the pair of scissors,

These blades 3 extend in the closed position of the pair of scissors, along an axis called the longitudinal y axis of the pair of scissors and move in a plane called plane P2 displacement of the blades, for the passage of the position closed in the open position and vice versa.

In the closed position of the pair of scissors, the branch 4 is disposed at least partially in a plane P forming, with the plane P1 passing through the longitudinal axis y of the pair 1 of scissors and the axis x pivot an angle A between 35 ° and 60 °, preferably close to 45 °. This first branch 4 is furthermore, over at least part of its length, from its zone of connection to the blade 3 towards its free end, separated from the plane P2 of movement of the blades by an angle B at least equal to 35 °, preferably between 35 ° and 70 °.

This first branch 4 is a branch bent with the elbow dividing the first branch in two portions, namely a first portion 41 which extends between the connection zone of the first branch 4 to the blade 3 and a second portion 42 which extends between the elbow and the free end of the first limb.

The first portion 41 of the first branch 4, of length at least equal to 1.5 cm forms with the second portion of the first branch an angle C between 80 and 120 °, preferably close to 100 °.

The second portion 42 of the first branch 4 is itself curved, with the concavity of the curve turned towards the plane P2 of movement of the blades 3.

This first branch 4 is, in the configuration of use of the pair of scissors, at least partially covered with a footprint 6. This footprint 6 is made of a rubber or an elastomer preferably chosen from the group formed by a silicone, a nitrile, an ethylene-propylene-diene monomer (epdm) or a polyurethane with a hardness range of between 60 and 80 Shore A. This impression 6 is in the form of an elongate body capable of being inserted transversely between two fingers, in this case the annular and middle fingers of a hand, to a bearing position in the connecting recess between said fingers, as shown in FIG. figure 7 .

For this purpose, said cavity 6 has two opposite longitudinal faces, each forming a bearing surface 61 of the proximal phalanx of a finger of the pair of fingers between which the cavity 6 is adapted to be inserted. The pair of fingers is formed, either of the annular and middle fingers, or of the middle finger and the index finger.

This footprint 6 further comprises a lateral opening 8 formed on one bearing faces near an end of said body.

In the present case, in the example shown, one of the bearing faces 61 tends to move away from the other bearing face 61 in the vicinity of an end of said body to form on the surface of said face 61 support a chimney whose open top defines, at the level of said opening, the lateral opening 8 of the cavity 6. The first branch of the pair of scissors is able to fit inside said chimney.

This lateral opening 8 is extended by the chimney duct which then continues inside the cavity in the direction of the end of the body opposite to that adjoining said opening, to give said impression in the form of a sheath. This passage thus formed in the impression is represented at figure 4 . This passage is, inside the cavity, a passage of curved shape, complementary to the shape of the second portion 42 of the first branch 4. The longitudinal support faces 61 join to form longitudinal edges. The longitudinal edge intended to be inserted into the connecting hollow between two fingers has, over part of its length, a concave shape to facilitate this insertion. The chimney duct forms a pivot around which one of the fingers, in this case the middle finger, is wound, when the pair of fingers between which the fingerprint is inserted is formed by the middle finger and the ring finger, before taking support at the level of its distal phalanx on one end of the elongate body constituting the impression and called zone 9 support.

As illustrated in figure 4 , the first branch can be inserted inside the passage of the cavity and slidably moved inside the latter, to occupy a position according to the length and the width of the finger intended to bear on the support zone 9, in this case, here the middle finger of the operator's hand.

This sliding movement also allows, if necessary, to position side by side the middle and the ring finger.

The second branch 5 of the pair 1 of scissors is in turn terminated by a half-ring forming a cradle 10 for receiving the thumb, as illustrated in FIG. figure 8 . The end of the cradle 10 closest to the first leg is bent towards the inside of the cradle to form a thumb stop. This retaining stop 11 can be made in the form of a piece 7 attached to said cradle 10, as shown in FIG. figure 3 at the level of the upper diagram, or made in one piece with the cradle 10, as shown in the lower diagram of the figure 3 .

Regardless of its embodiment, this stop 11 has the function of preventing a sliding of the thumb out of the half-ring, and thus facilitate the transmission of effort from the hand to the pair of scissors.

In the case of a stop made in the form of a piece 7 reported, this piece can be made of elastomer or rubber. This insert 7 here affects the shape of a C with a free end of the angled C towards the inside of the C, the back of the C being provided with a groove to allow the positioning of said piece by interlocking on the cradle 10 of the second branch 5.

Said cradle 10, disposed in a plane parallel to the plane P2 of movement of the blades 3, delimits a circle portion of center O and the line passing through the center O of the circle and the point of intersection of the pivot axes x and longitudinal y of blades 3 form with the longitudinal axis y of the pair 1 of scissors an angle D at least equal to 20 °.

To complete the assembly, the impression 6 and the first branch 4 each comprise a marking 12, 13 forming an insertion mark of the first branch 4 inside the cavity 6. This marking can be achieved by a simple punch at the footprint and first branch.

For taking such a pair of scissors, one can proceed as follows: the hand resting by its edge on a flat surface, inserting the impression 6 carried by the first branch of the pair of scissors between the middle 21 and the annular 20, with the bearing faces of the impression facing the proximal phalanges of said fingers. Then position the thumb 22 in the cradle of the second branch. The grip of the pair of scissors is then completed.

Claims (9)

1. A pair of scissors (1), in particular for cutting hair, comprising two scissor portions (2) mounted pivotably around an axis (x), each of said scissor portions (2) comprising a blade (3) extended by a branch (4, 5), said blades (3) extending in the closed position of the pair (1) of scissors along an axis, called longitudinal axis (y), of the pair of scissors, one (4) of the branches (4, 5), called first branch (4), being positioned at least partially in a plane (P) forming, with the plane (P1) passing through the longitudinal axis (Y) of the pair (1) of scissors and the pivot axis (x), an angle (A) of between 35° and 60° and being, over at least a portion of its length, from its connecting zone to the blade (3) toward its free end, separated from the movement plane (P2) of the blades by an angle (B) at least equal to 35°, this first branch (4) being able to be at least partially covered by an indentation (6) assuming the form of an elongate body able to be inserted transversely between two fingers (20, 21), generally the ring finger (20) and the middle finger (21), of a hand up to a bearing position in the connecting hollow between said fingers, this indentation (6) being provided with a lateral opening (8) and, at the end of the body adjacent to said opening (8), a bearing zone (9) of a distal phalange of at least one of the fingers between which said indentation (6) is able to be inserted, the other branch (5), called second branch (5), ending with a second ring forming a cradle (10) for receiving the thumb (22), characterized in that the first branch (4), with a rectangular or square cross-section, is a bent branch with the portion called second portion (42) of the first branch (4) positioned between the first end and the bend of said branch (4) forming an angle (C) of between 80° and 120°, with the portion (41) called first portion (41) of the first branch (4) positioned between the bend and the connecting zone of the first branch (4) to the blade (3), in that the resiliently deformable indentation (6) forms, with its lateral opening (8) that extends toward the inside of the indentation (6), a sheath inside which at least the second portion (42) of the first branch (4) can be inserted with a position adjustable by sliding movement and in that the end of the cradle (10) closest to the first branch (4) is bent toward the inside of the cradle in order to form a retaining stop (11) of the thumb.
2. The pair (1) of scissors according to claim 1,
   characterized in that the first portion (41) of the first branch (4) has a length at least equal to 1.5 cm.
3. The pair (1) of scissors according to one of the preceding claims,
   characterized in that the retaining stop (11) is made in the form of a part (7) attached on said cradle (10).
4. The pair (1) of scissors according to one of claims 1 or 2,
   characterized in that the cradle (10) and the retaining stop (11) are made in a single piece.
5. The pair (1) of scissors according to one of the preceding claims,
   characterized in that said cradle (10), positioned in a plane parallel to the movement plane (P2) of the blades (3), delimits a circle portion with center (O) and in that the line passing through the center (O) of the circle and the point of intersection of the pivot (x) and longitudinal (y) axes of the blades (3) forms, with the longitudinal axis (y) of the pair (1) of scissors, an angle (D) at least equal to 20°.
6. The pair (1) of scissors according to claim 5,
   characterized in that the distance between the center (O) of the circle portion delimited by the cradle (10) and the point of intersection of the pivot (x) and longitudinal (y) axes of the blades is at least equal to 3.5 cm.
7. The pair (1) of scissors according to one of the preceding claims,
   characterized in that the second portion (42) of the first branch (4) is curved with the concavity of the curve turned toward the movement plane (P2) of the blades (3).
8. The pair (1) of scissors according to one of the preceding claims,
   characterized in that the indentation (6) and the first branch (4) each comprise a marking (12, 13) forming an insertion reference for the first branch (4) inside the indentation (6).
9. The pair (1) of scissors according to one of the preceding claims,
   characterized in that the indentation (6) is a rubber or an elastomer preferably chosen from the group formed by a silicone, a nitrile, an ethylene-propylene-diene monomer (EPDM) or a polyurethane with a hardness range of between 60 to 80 shores A.

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