EP4473156A1 - Dispositif d'aide à l'enfilage d'une aiguille a chas - Google Patents
Dispositif d'aide à l'enfilage d'une aiguille a chasInfo
- Publication number
- EP4473156A1 EP4473156A1 EP23703897.1A EP23703897A EP4473156A1 EP 4473156 A1 EP4473156 A1 EP 4473156A1 EP 23703897 A EP23703897 A EP 23703897A EP 4473156 A1 EP4473156 A1 EP 4473156A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eye
- hook
- needle
- threading
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B87/00—Needle- or looper- threading devices
- D05B87/02—Needle- or looper- threading devices with mechanical means for moving thread through needle or looper eye
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B87/00—Needle- or looper- threading devices
Definitions
- the invention relates to a device for aiding the threading of an eyed needle, that is to say the installation of a sewing thread -in particular a single strand of an elbow thread - passing through the eye of a sewing needle, also called an "eye needle”.
- sewing needle and “eye needle” commonly designate a sewing instrument making it possible to drive a sewing thread through the thickness of a piece to be sewn.
- a sewing needle has a first pointed longitudinal end suitable for stitching the piece to be sewn and a second longitudinal end of substantially flattened shape and pierced transversely by an orifice, called "eye", for passing the sewing thread, by threading, this whereby the sewing thread is likely to be drawn by the sewing needle through the piece to be sewn.
- WO 1993/018220 discloses a device comprising a cylindrical body adapted to be able to be placed orthogonally to the axis of elongation of the needle to be threaded, a sleeve movable in translation relative to the cylindrical body, the sleeve being provided a punch adapted to be able to be moved with the sleeve so that the free end of the punch passes through the eye of the needle and to drive the yarn through the eye.
- the use of the device of WO1993/018220 is tricky.
- the invention aims to overcome the drawbacks of the device of WO1993/018220.
- needle threader formed of a metal gripping plate supporting a metal wire which is rigid in traction, elastic in bending and of bending stiffness greater than the bending stiffness of the sewing thread.
- the two longitudinal ends of the metal son are mounted integral with the metal plate, the wire being folded back on itself in the form of a convex plane quadrilateral -in particular in the form of a diamond- so as to be able to cross the eye of the sewing needle, by elastic deformation of the metal thread.
- needle threader actually facilitates, in certain cases, the threading of a sewing needle.
- the needle is a sewing needle of small diameter in cross-section and the orifice of the eye is itself of small size, the very introduction of the metal thread of the needle threader through the eye orifice remains delicate.
- the introduction of the metal wire of the needle threader into the eye can particularly pose a problem for people with visual impairments and/or people subject to uncontrolled tremors.
- the invention aims to overcome these drawbacks.
- the invention aims to provide an aid device for threading an eyed needle to overcome, at least in part, these drawbacks.
- the invention aims to provide such an aid device which makes it possible to thread an eyed needle with a single sewing thread, in particular with a single section of sewing thread.
- the invention also aims to provide such an aid device which makes it possible to thread an eyed needle with a single sewing thread, one of the longitudinal ends of which is engaged in a spool of this sewing thread.
- the invention relates to a device for aiding the threading of an eyed needle, the eye of the needle being of the type limited at the periphery by a flange extending substantially in a plane, said eye opening plan; the aid device being characterized in that it comprises a solid body - in particular an ergonomic solid body - forming:
- housing of the eye adapted to be able to receive the eye of the needle and to maintain the needle in position relative to the solid body, and;
- the term "threading” designates in the common sense of these terms, the action of equipping an eyed needle with a sewing thread-in particular and preferably with a single sewing thread-, of so that the sewing thread crosses - in particular crosses only once - the eye of the needle while being held integral with the needle, prior to and during a sewing operation.
- the term “threaded” describes the state of an eyed needle equipped with a sewing thread passing through the eye of the needle, and; the term “substantially” indicates, in a usual way, that a characteristic, structural or functional, must not be taken as marking an abrupt discontinuity, which would have no physical meaning, but covers not only this structure or this function, but also slight variations of this structure or this function which produce, in the technical context considered, an effect of the same nature, if not of the same degree.
- the device according to the invention makes it easier to guide the free end of the sewing thread in the direction of the eye of the needle and to thread the needle.
- the device according to the invention makes it possible to thread a needle with a thread integral with a spool of sewing thread. None in the device according to the invention requires that the two ends of the sewing thread be free.
- the solid body is said to be "ergonomic” because it is sized and shaped in such a way to be able to be held with one hand by an individual, so that this individual can hold the sewing thread by means of the other of his two hands and proceed to thread the needle.
- the solid body can be formed from any material. It can be formed of any solid material of natural origin, such as for example wood, or of any synthetic material, in particular of any synthetic polymer material, composite or not. It may be formed from at least one thermoplastic polymer material and/or from at least one thermosetting polymer material.
- the material forming the solid body is chosen so as to allow manufacture of the solid body by molding, in particular by thermo-moulding.
- the solid body is traversed by the passage opening onto two opposite faces of the solid body.
- the solid body is integrally formed as a single piece.
- the solid body is formed of at least two - in particular of two - pieces of complementary shapes and adapted to be able to cooperate with each other and be reversibly associated with each other to others -especially with each other- to form the solid body.
- the design of the solid body formed from two complementary parts facilitates, or even allows, the manufacture of the solid body by thermo-moulding.
- the needle receiving channel is formed by assembling the complementary parts with each other.
- said guide section forms a smooth peripheral internal guide wall.
- the roughness of the peripheral internal wall is adapted to limit the friction forces of the sewing thread on the internal wall and to facilitate the guiding of the sewing thread, in particular of the free end of the sewing thread, in contact with the internal wall and without snagging this end and the sewing thread on the internal wall.
- the roughness of the peripheral internal wall can be between 0 ⁇ m and 50 ⁇ m, in particular between 0 ⁇ m and 10 ⁇ m.
- said guide section has a decreasing cross-section from its first end emerging outside the solid body to its second end emerging into said housing of the eye.
- said guide section comprises a second section in the form of a truncated cone (truncated) of decreasing cross-section - in particular continuously decreasing - from its first end opening outside the body, up to its end opening into said housing of the eye.
- said guide section is of frustoconical shape of revolution -in particular along an axis of revolution orthogonal to said eye opening plane-.
- said guide section be in the form of a truncated conical solid with a polygonal base, in particular in the form of a truncated pyramid.
- the conical solid trunk with a polygonal base has a height (orthogonal to the base of the conical solid trunk and passing through the apex of the conical solid) orthogonal to said opening plane of the eye.
- the second end of said section of guide has an opening opening into said housing of the eye and arranged to extend opposite—in particular entirely opposite—the eye of the needle to be threaded. Guiding the end of the sewing thread towards the eye is thus facilitated.
- the second end of said guide section has an opening opening into said housing of the eye and in the form of a slot extending opposite the opening of the eye. There is nothing to prevent providing that the second end of said guide section has an oblong opening opening into said and facing said housing of the eye.
- the solid body forms a channel - in particular a rectilinear channel - for guiding the eye of the needle moving in the solid body up to said housing of the eye.
- the guide channel opens outside the solid body at one of its longitudinal ends and into said housing of the eye at the other of its longitudinal ends. According to some embodiments, nothing prevents providing that the guide channel has a needle entry funnel in the channel at its longitudinal end opening outside the solid body.
- the guide channel has a generally circular shape according to any cross section relative to the axis of elongation of the guide channel.
- the guide channel is sized and shaped to be able to receive the needle and position the eye of the needle in said housing of the eye.
- the guide channel has two longitudinal grooves, radially opposed to each other and adapted to be able to cooperate each with opposite parts of the rim of the eye and guide the eye of the needle moving in the guide channel to said housing of the eye.
- the longitudinal grooves extend into said housing of the eye in which they cooperate in order to be able to hold the eye of the needle so that said opening plane of the eye extends facing the second end of the guide section opening into said housing of the eye.
- said housing of the eye is provided with a member for detecting the position of the eye of the needle in abutment in said housing of the eye.
- the detection member is a sensor coupled to a light-emitting diode indicating that the eye of the needle is in abutment in said housing of the eye at the longitudinal end of the channel and indicating that the opening plane of the eye is oriented facing the second open end of the guide section. Any type of sensor is possible. It may be a pressure sensor, a piezoelectric sensor or other.
- the detection member comprises a first contactor arranged in said housing of the eye and forming a stop arranged in the extension of the guide channel and a second contactor arranged to be kept in contact with the cylindrical part of the needle when the needle is placed in the guide channel.
- the first and second contactors are connected by an electric circuit comprising the light-emitting diode and an electric battery so that the adequate positioning of the needle in the guide channel and of the eye in said housing of the eye closes the electrical circuit, lights the diode and indicates that the eye of the needle extends facing said guide section.
- the member for detecting the position of the eye of the needle in abutment in said housing of the eye and the light-emitting diode are adapted to indicate that the eye of the needle is oriented in said housing of the eye such that said opening plane of the eye is substantially orthogonal to the axis of elongation of said guide section and the the needle is held in position relative to the solid body.
- said guide section forms a funnel for guiding a free end of the sewing thread driven in movement in said guide section towards said eye housing, so that said free end of the sewing thread sewing passes through the eye of the needle and emerges outside the body.
- the device for aiding the threading of an eyed needle comprises:
- a filiform hook extending substantially in a plane and having a longitudinal end point adapted to be able to be engaged in the opening of the eye and to progress so that the filiform hook crosses the eye, and; means for driving the hook moving between: o a first position, called the retracted position, in which the hook does not extend into said housing of the eye and the eye of the needle can be placed in said housing of the eye, And ; o a second position, called the threading position, in which the hook extends through said opening of the eye and in which at least part of the hook extends outside the solid body; the hook being adapted to cooperate with the sewing thread so that the movement of the means for driving the hook in movement from said threading position to said retracted position allows threading of the needle.
- the guide section is a guide section of the hook moving between said retracted position and said threading position. According to some of these embodiments, the guide section is also a guide section of the hook moving between said threading position and said retracted position.
- the hook is formed of at least one metal wire which is rigid in longitudinal traction and elastically deformable transversely in bending.
- the hook is adapted to be able to deform elastically when it moves across the eye.
- the hook is also adapted to be able to deform in contact with said guide section, during its movement in said guide section between said retracted position and said threading position.
- the hook is formed by folding the metal wire into at least two successive segments extending substantially in the same plane and forming the longitudinal end point of the hook.
- the longitudinal end point of the hook is formed by two adjacent consecutive sides of the hook forming an angle - in particular an acute angle - adapted so that the longitudinal end point of the hook can pass through the opening of the eye of the needle and to be able to feed the yarn to be sewn through the eye opening.
- the hook is an open hook formed of two successive segments of the metal wire, folded over one another, a first segment of which has a longitudinal end supported by the hook drive means and a second segment having a free end, the two segments being shaped to be able to cooperate with the sewing thread so that the hook allows the attachment of the sewing thread by moving a loop of the sewing thread overlapping along the first segment to the longitudinal end point of the hook, whereby the sewing thread is driven through the eye of the needle by moving the hook drive means from said threading position to said retracted position.
- the metal wire forming the open hook has a circular cross-section with a diameter of between 0.20 mm and 0.40 mm, preferably between 0.25 mm and 0.35 mm, more particularly of the order of 0.30 mm.
- the hook is a filiform loop - in particular a filiform loop made of at least one metallic material - closed on itself and extending substantially in a plane and forming a longitudinal end point of the hook adapted - in particular dimensioned - to be able to be engaged in the opening of the eye.
- the hook is formed by folding over a section of metal wire to form a planar convex quadrilateral.
- the hook is formed by folding the diamond-shaped section of metal wire, the two longitudinal ends of the metal wire being mounted integral with the drive means.
- the hook is adapted to be able to pass through the eye of the eyed needle, by elastic deformation of the metal wire.
- the hook - in particular the filiform loop closed on itself - is formed from at least one elastically deformable material in bending between:
- the metal wire forming the filiform loop has a Circular transverse cross section with a diameter of between 0.10 mm and 0.20 mm, more particularly of the order of 0.15 mm.
- the aid device according to these embodiments is particularly suitable for threading a needle having a small eye opening.
- the opening slot of the second end of said guide section has two transversely opposite widenings adapted to allow the passage of the filiform hook driving the sewing thread in displacement between said threading position and said retracted position
- the hook drive means comprise a trigger, the hook being mounted integral with the trigger so as to be able to be moved by said trigger between said retracted position and said threading position ( and between said threading position and said retracted position), in a direction parallel to the axis of elongation of said guide section and orthogonal to the opening plane of the eye.
- the trigger is arranged so that it can be moved by a user of the aid device.
- the aid device comprises a rigid frame for guiding the trigger and the hook moving between said threading position and said retracted position (and between said retracted position and said threading position ), the rigid frame being mounted integral with the solid body.
- the trigger has a pusher extending outside the rigid frame and adapted to allow movement of the hook between said threading position and said retracted position and between said retracted position and said threading position .
- the hook being in said retracted position, the longitudinal end point of the hook extends in said guide section between the first and second ends of said guide section.
- the guiding of the longitudinal end point of the hook in movement in said guide section is ensured up to the second end of said guide section opening into said housing of the eye and up to the opening of the eye.
- the eyed needle threading aid device comprises elastic means for returning the trigger and the hook to said retracted position.
- the device for aiding the threading of an eyed needle comprises elastic means for returning the trigger and the hook to said threading position.
- the roughness of the peripheral internal guide wall is low and suitable for limiting the friction forces of the hook on the internal wall and facilitating the guiding of the hook in contact with the internal wall and without catching the hook on the inner wall.
- the solid body has a groove extending from the guide channel and opening outside the solid body, said groove being adapted to allow the passage of two strands of wire extending upstream and downstream of the eye of the needle, during the withdrawal of the needle from the guide channel.
- the invention also relates to a method for threading a needle with an eye, the eye of the needle being of the type limited at the periphery by a rim extending substantially in a plane, called the eye opening plane, and in which a donning aid device according to the invention is used.
- the invention also relates to a method for threading an eyed needle, the eye of the needle being of the type limited at the periphery by a flange extending substantially in a plane, called the opening plane of the eye.
- the eye of the needle is disposed in said housing of the eye of a device for aiding threading of said needle, so that the second end of said guide section opens into said housing of the eye; a sewing thread is introduced into the first end of said guide section and moved in said guide section as far as said housing of the eye, said guide section forming a funnel for guiding the sewing thread, so that the sewing thread sew passes through the eye of the needle and emerges outside the body, through which the needle is threaded, then; the threaded needle is removed from the threading aid.
- Threading the eyed needle does not require visualization of the eye of the needle during threading and threading of the needle is thus facilitated.
- the aid device comprising a filiform hook whose free longitudinal end is guided in movement in said guide section between said retracted position and said threading position, the filiform hook is placed in said threading position in which the filiform hook extends to the outside the solid body, then the sewing thread is positioned relative to the hook so that the only movement of the filiform hook from said threading position to said retracted position is accompanied by the threading of the needle.
- the hook being an open hook
- the sewing thread is arranged to straddle the first segment of the open hook and the open hook is returned to said retracted position, whereby the needle is threaded .
- the threaded needle is extracted from the aid device by sliding the needle in the guide channel.
- the needle is extracted from the device in a single movement, by traction exerted simultaneously on the needle - in particular on the pointed end of the needle - and on one of the two ends of the sewing thread, according to the longitudinal axis of the needle (the user simultaneously and jointly pinching the needle and one of the two strands of sewing thread) so as to cause the other of the two strands of sewing thread to slide in the opening of the needle's eye and into the hook, whereby that other strand of the sewing thread is released from the needle's eye and the hook and whereby the needle is threaded through a single strand of the sewing thread.
- the aid device according to the invention is held by the user in one, called unskilled hand, of his two hands (preferably, left hand if the user is right-handed, right hand if the user is left-handed).
- unskilled hand of his two hands
- the hook being in said retracted position, the user introduces with his hand, called skilled hand, opposite to said unskilled hand, the needle into the guide channel so that the eye of the needle extends opposite the second end of the guide section, then it moves the trigger and the hook of the aid device from said retracted position into said threading position.
- the user seizes the reel of sewing thread by said skilful hand, of which a section of thread has been unwound and has, with his skilful hand, the section of thread released so that it straddles the hook and so that the only displacement of the filiform hook from said threading position to said retracted position carries the threading of the needle. It is then sufficient for the user to grasp by pinching, with his skilful hand holding the spool of thread, the needle and the section of thread extending between the spool and the eye of the needle and extracts the needle from the channel of guidance by exerting traction on the needle and the thread along the longitudinal axis of the guide channel. Due to this pulling, the free end of the sewing thread is slid through the opening of the eye and the hook, whereby the needle is threaded with a single strand of the sewing thread and is ready to go. be used.
- the invention also relates to a method of manufacturing a device for aiding the threading of an eyed needle according to the invention, in which the solid body is formed by hot molding, in particular of a solid thermoplastic material.
- the invention also relates to a device for aiding the threading of an eyed needle, a method for threading an eyed needle and a method of manufacturing such an aid device.
- threading characterized in combination by all or some of the characteristics mentioned above or below. Regardless of the formal presentation given, unless expressly indicated otherwise, the various characteristics mentioned above or below should not be considered as closely or inextricably linked to each other, the invention possibly relating to only one of them. these structural or functional characteristics, or only part of these structural or functional characteristics, or only part of one of these structural or functional characteristics, or any grouping, combination or juxtaposition of all or part of these structural or functional characteristics .
- Figure 1 is a schematic representation in perspective of a device for aiding the threading of an eyed needle, according to one embodiment, the device comprising a filiform handle;
- Figure 2 is a representation in perspective of a device for aiding the threading of an eyed needle, according to another embodiment
- Figure 3 is a view of a variant of the embodiment of Figure 2, which illustrates preferred embodiments of the housing of the device, and in which the filiform hook is a closed loop, in donning position;
- FIG 4 Figure 4 shows the device of Figure 4, when the filiform hook is in the retracted position;
- Figure 5 shows a variant of the device of Figure 4, in which the filiform hook is an open loop, in the same threading position as the hook of Figure 4;
- FIG. 6 shows, slightly from above, the device of Figure 5, an upper housing element and a front closure cover are removed from the rest of the housing;
- FIG 7 is a partial view, slightly from below, of the device of Figure 5, the front closure cover is removed from the rest of the housing;
- FIG 8 shows, slightly from above, the device of Figure 5 with the upper housing element in place, and illustrates a funnel for returning the hook into the body of the device, according to modes of carrying out the invention
- Figure 9 shows, slightly from below, the device of Figure 5 with the front closure cover of the housing removed, and illustrates a hook outlet funnel to the outside of the device, according to embodiments of the invention
- Figure 10 is a schematic representation in perspective of a first part of the aid device for threading an eyed needle, according to the embodiment of the invention shown in Figure 2 ;
- Figure 11 shows, seen from the right side of the device, a funnel for inserting the needle into the device, according to embodiments of the invention
- Figure 12 shows is a front view, slightly from above, of the top of the device of Figure 5 with the front housing closure cover removed;
- Figure 13 is a top sectional view of the device of Figure 5, in section plane A-A of Figure 12;
- FIG 14 shows a sectional view of the device of Figure 5 also in the section plane A-A of Figure 12, in which the hook is absent in order to better show the passage for the hook, its guide section, as well as the outlet funnel and the re-entry funnel of the hook; this figure also shows a left side view, as well as a top view, of the device of figure 5 in which the hook has been removed for, as for the sectional view also shown in this figure 14;
- Figure 15 is a sectional representation of the embodiment of the device shown in Figure 1, the filiform loop being in a retracted position;
- Figure 16 is a sectional representation of the embodiment of the device shown in Figure 4, the filiform loop being in a threading position;
- Figure 17 is a top sectional view of the device of Figure 3 in section plane A-A of Figure 12, wherein the hook is a closed loop which is in the donning position , essentially taken out of the case of the device;
- Figure 18 is another top sectional view of the device of Figure 3 in section plane A-A of Figure 12, similar to the view of Figure 17, but in which the hook is is in an intermediate position between the threading position and the retracted position, partially retracted into the housing but still with its free end tip outside the housing of the device, as shown in Figure 4;
- Figure 19 is another top sectional view of the device of Figure 3 in the sectional plane A-A of Figure 12, similar to the view of Figure 17 and to the view of Figure 18, but in which the hook is in the retracted position, fully retracted into the housing of the device;
- Figure 20 is a top right side view of the device, in section plane B-B of Figure 12;
- Figure 21 is a top right side view of the device, in section plane C-C of Figure 12;
- Figure 22 is a top right side view of the device, in section plane D-D of Figure 12;
- Figure 23 is a schematic representation in perspective of a device for aiding the threading of an eyed needle, according to another embodiment of the invention.
- Figure 24 is similar to Figure 5, and shows the top of the device slightly from above and slightly from the left, and illustrates the placement of a section of sewing thread for its attachment by the hook in the form of an open loop which is, in the figure, in the threading position;
- Figure 25 is a schematic representation in perspective of the aid device for threading an eyed needle, according to another embodiment of the invention, in which the hook is moved towards the retracted position;
- Figure 26 is similar to Figure 24, and shows the section of sewing thread hooked by the hook in the form of an open loop which is found, in the figure, in an intermediate position between the threading position and the retracted position, during retraction of the hook into the housing of the device for threading a needle with the sewing thread;
- Figure 27 shows, in isolation, a device for detecting the correct positioning of the needle to be threaded, in the eye housing of the device, allowing the needle to be threaded in the position, according to embodiments of the invention
- Figure 28 shows the detection device of Figure 27 in the presence of a correctly inserted needle, in abutment in the device, in correct positioning for threading the needle;
- Figure 29 shows part of the detection device of Figure 27 and Figure 28 in place in the frame body of the device housing;
- Figure 30 also shows, from a slightly different angle of view, the same part of the detection device of Figure 25 and Figure 26, in place in the built body of the device housing, than Figure 20; And,
- Figure 31 is a schematic representation of a step in a method of threading a needle according to the invention.
- the needle threading aid device shown is configured to be used preferably in a conventional manner by a right-handed user, that is to say a user preferably using his right hand.
- a right-handed user will typically hold the device in their left hand and pull the trigger with their left thumb, while performing the more manipulative operations.
- needle and thread in her right hand.
- the devices for respectively right-handed and left-handed users are mirror images of each other.
- the device is systematically presented, unless explicitly stated otherwise, with an orientation in three-dimensional space such as that in which the device is presented to the eyes of the user who holds it in his hand or in his hands. hands, in front of him, for conventional use.
- three-dimensional space (or 3D) characterizes the space that surrounds the user, as perceived by his vision, with regard to width, height and depth.
- This notion corresponds, in mathematics, to Euclidean geometry in space according to which space is identified by three orthogonal axes, whereas a plane is composed of two dimensions (2D) only and is identified only by two axes. among said three orthogonal axes.
- the three geometric dimensions are as follows:
- the dimensions of the guide channel 12 -its length and its cross-sectional diameter- are chosen to allow the eye of the needle to move in the guide channel 12, so that it can reach slot 3 of the eye.
- the guide channel 12 has a circular shape in any cross section.
- the cross-sectional diameter of the guide channel is chosen to allow the passage of the eye of the needle.
- the guide channel 12 has a non-circular cross-sectional shape.
- This shape can be ovoid of larger diameter adapted to be able to receive the eye of the needle and to guide the needle in longitudinal displacement in the guide channel 12 and to bring the eye of the needle into the housing 3 of the eye so that the opening of the eye extends in a plane orthogonal to the axis 32 of the passage 4 passing through the solid body 2.
- This shape may be square, the opening plane of the eye extending along a diagonal of this square section and orthogonal to the axis 32 of the passage 4 passing through the solid body 2.
- This shape may be rectangular, the opening plane of the eye extending along the length of this rectangular section and orthogonal to the axis 32 of the passage 4 passing through the solid body 2.
- the guide channel 12 has, in any cross-section, a substantially circular shape and has two longitudinal grooves 14, radially opposed and extending over the entire length of the guide channel 12, the two longitudinal grooves being adapted to be able to cooperate with the opening rim of the eye of the needle extending substantially in said opening plane of the eye and to guide the needle to its threading position.
- the guide section 5 forms a first funnel 201 funnel 8 limited laterally by a wall 10 having a cross section with respect to the axis 32 passing through the passage 4 of the device, which decreases between the first end 6 and the second end 7 of said guide section 5 towards the opening of the eye of the needle 26.
- This funnel called the hook exit funnel, is used to conform the hook in order to make it cross the eye of the needle 26.
- needle when the trigger is moved upwards, to move the hook from the retracted position 20 to the threading position 21 in which the free end 27 of the hook protrudes outside of the housing 9 (formed from parts 9c, 9d, and 9 e of the housing 9, which is also called solid body 2 in the present description).
- FIG. 1 An embodiment of a device 1 according to the invention for aiding the threading of a needle 26 with an eye is represented in FIG. 1.
- This second embodiment of a device according to the invention is adapted to facilitate the threading of a needle with any sewing thread 28, in particular with a flexible sewing thread 28 having low bending stiffness.
- a device 1 according to this second embodiment is formed of a solid body 2 made of at least one polymer material. It may be a thermoplastic polymer material and/or a thermosetting polymer material. In particular, the material forming the solid body 2 is chosen so as to allow the solid body 2 to be manufactured by molding, in particular by hot molding.
- the device 1 enters: a first conformation, called the deformed conformation, of the filiform loop 16 in which the filiform loop 16 is deformed due to its passage through said opening of the eye of the needle to be threaded, and;
- the solid body 2 is formed of two parts 9c, 9d of complementary shapes to each other and adapted to be assembled with each other by interlocking, this whereby the two parts 9c, 9d are kept assembled with each other, but are also adapted to be able to be separated from each other.
- the two parts 9c, 9d forming the solid body 2 are held together with each other by any means of reversible or irreversible assembly, for example by elastic deformation (also called "clipping"). There is nothing to prevent the two parts 9c, 9d from cooperating with each other by reversible interlocking of complementary surfaces.
- the two parts 9c, 9d forming the solid body 2 are assembled with each other so that their respective faces extending facing each other form, due to their assembly, the passage and said guide section crossed by the filiform loop.
- the two parts 9c, 9d forming the solid body 2 cooperate in association to provide the channel 12 for receiving and guiding the sewing needle 26 in longitudinal movement in the channel 12.
- the two parts 9a, 9b forming the solid body 2 are not separable and that the threaded needle can be extracted from the solid body 2 by longitudinal displacement of the needle threaded into the channel 12 of guide, the sewing thread passing through the opening 38 of the eye 27 of the needle being guided along the groove 25.
- the two parts 9c, 9d forming the solid body 2 also cooperate in association to form the passage passing through the solid body 2 and said guide section, adapted to be able to guide the movement of a longitudinal end 36 of the threadlike loop 16 so that it passes through the opening of the eye of the needle.
- the aid device 1 according to the second embodiment of the invention represented in FIG. 1 comprises means 19 for driving the filiform loop 16 moving between a first position, called the retracted position 20, of the loop 16 filiform in which the filiform loop 16 extends set back from said housing 3 of the eye and does not does not cross the eye 27 of the needle 26 and a second position, called position 21 of threading, of the filiform loop 16 in which the filiform loop 16 extends through said opening of the eye and in which the filiform loop 16 is in said donning conformation 18 and at least a portion of the filiform loop 16 extends outside the body
- the means 19 for driving the filiform loop 16 comprise a rigid frame 23 and a trigger 22 mounted to slide relative to the frame 23, the trigger 22 carrying the filiform loop.
- the frame 23 has two grooves 24a and 24b for guiding the trigger 22 and the filiform loop 16 moving between said retracted position 20 and said threading position 21.
- the solid body 2 has a groove 25 extending from the guide channel 12 and opening over its entire length outside the solid body 2.
- the groove 25 is adapted to allow the passage of the two longitudinal portions of the thread threaded into the needle 26 and extending upstream and downstream of the eye 27 of the needle 26, during the withdrawal of the threaded needle from the device. 1 help, by sliding in the guide channel 12.
- the guide channel 12 of the needle 26 opens at one of its longitudinal ends, outside the solid body 2 and at the other of its longitudinal ends, in the housing
- the guide channel 12 has, according to any cross-section, a shape adapted to be able to receive and cooperate with the eye 27 of the needle 26. It can have, according to any cross-section, a generally circular shape. In the embodiment shown, it has, according to any cross-section, a generally circular shape intended to cooperate with the cylindrical part of the needle 26, and two grooves 14 extending radially hollow towards the outside of the channel 12, diametrically opposed to each other, and longitudinally along the entire length of the guide channel.
- the grooves 14 are dimensioned - in particular in width and in depth - to be able to cooperate with at least a part of the rim 39 of the opening 38 of the eye and to guide the eye 27 of the needle 26 in movement in the guide channel 12 until said housing 3 of the eye.
- the eye 27 of the needle is positioned in said housing 3 of the eye so that the rim 39 of opening 38 of the eye 27 extends in a plane perpendicular to the axis 32 passing through the passage 4 and said guide section 5.
- FIG. 2 A sectional view of a second embodiment of a device 1 according to the invention is shown in Figure 2 in a first position, called the retracted position, of the threadlike loop 16 in which the trigger 22 is raised (that is to say remote from said guide section 5), the filiform loop 16 extends set back from said housing 3 of the eye and does not pass through the eye 27 of the needle 26.
- the free end 36 of the threadlike loop 16 extends into said guide channel 5 . Guiding of the filiform loop 16 between said retracted position 20 and said threading position 21 is improved.
- the needle 26 can be introduced into the guide channel 12 so that the longitudinal end of the eye 27 of the needle comes into abutment in the housing 3 of the eye and that the opening plane of the eye 27 is orthogonal to the axis 32 passing through the passage 4 and the guide section 5.
- the latter can be moved by actuating the trigger 22 along the axis 32 passing through the passage, whereby the free end 36 of the threadlike loop 16 cooperates with the wall 10 of the guide section 5 so as to be guided towards the opening of the eye 27 and cross it, without requiring visual assistance from the user of the opening of the eye and/or of the free end 36 of the loop 16 filiform.
- the filiform loop 16 temporarily assumes said deformed conformation, in which the filiform loop 16 is deformed due to the stresses related to its passage through said opening of the eye 27 of the needle 26 to be threaded, and returns elastically in said threading conformation 18, in which the filiform loop 16 is shaped so as to be able to be traversed by the sewing thread 28, when the filiform loop 16 is in said threading position 21.
- FIG. 16 A schematic view, in section, of a device 1 according to the invention is shown in Figure 16 in the threading position 21 of the filiform loop 16, in which the trigger 22 is close to the guide section 5. so that the free end of the filiform loop 16 extends outside the solid body 2 of the device (upwards), and that the other end of the filiform loop 16 which is integral with the trigger 22 always extends through the eye 27 of the needle 26 when the needle is placed in abutment in the housing 3 of the eye.
- the filiform loop 16 After the passage of the free end of the filiform loop 16 through the eye of the needle 26 to arrive in the threading position 21 as shown in the figure, the filiform loop 16 is brought back elastically from said deformed conformation into said threading conformation 18, in which the filiform loop 16 forms an opening for passage of a section of sewing thread 28 as shown in FIG. 1.
- the person using the aid device according to the invention can introduce one of the longitudinal ends of the section of sewing thread 28 into the passage opening formed by the filiform loop 16.
- the user can then operate the trigger 22 downwards to bring the filiform loop 16 back to position 20 retracted, whereby the filiform loop 16 resumes its deformed conformation in order to cross the opening of the eye 27 towards the inside of the device until it reaches the retracted position 20 and releases the opening of the eye, carrying with it the two strands of sewing thread 28 also through the needle eye opening 26, whereby said needle is threaded.
- it is then the eye of the needle itself as well as the internal wall of the guide section of the loop which, essentially, cause the deformation of the filiform loop 16 which allows it to cross the eye. 27.
- the re-entry funnel 102 free end only serves to guide the free end of the filiform loop 16 so that it engages well in the passage 4
- FIG. 2 A first variant of the aid device 1 according to the invention is shown in FIG. 2 in which the threadlike loop 16 is in the donning position 21 .
- the part 9c forming the solid body 2 with part 9d is provided with pins 41 adapted to be able to cooperate with bores formed in part 9d and to secure parts 9c and 9d to form the solid body 2.
- the solid body 2 is equipped with a warning device 37 -in particular a photoluminescent diode- connected to a sensor 40 adapted to be able to detect the correct positioning of the eye 27 of the needle 26 in the housing 3 of the eye.
- a warning device 37 in particular a photoluminescent diode- connected to a sensor 40 adapted to be able to detect the correct positioning of the eye 27 of the needle 26 in the housing 3 of the eye.
- the user is thus alerted to the appropriate positioning of the needle 26 in the channel and of the eye 27 in the housing of the eye, so that the filiform loop 16 can be brought from said retracted position 20 to said threading position 21, whereby the filiform loop 16 can be threaded.
- the filiform loop 16 returned to said retracted position 20 allows the threaded needle to be released.
- FIG. 10 shows the part 9d of the casing seen from above.
- the filiform loop 16 is in the retracted position 20 (and is therefore not visible in this figure 10) and the part 9c of the solid body 2 is withdrawn.
- Part 9c of solid body 2 forms a first part of guide channel 12, the other part of the guide channel being formed in part 9c (not shown).
- the part 9d of the solid body 2 also forms part of the eye housing 3 and has a passage 4 adapted to be able to cooperate with the second end 7 of the guide section 5 of the hook 16.
- a sensor 40 is arranged in the eye housing 3, opposite the entrance to the guide channel 12 in said chas3 housing.
- the sensor can be any suitable type. It may be for example a piezoelectric sensor adapted to generate an electrical signal due to pressure exerted by the eye 27 of the needle on the sensor 40.
- the device comprises a detector of the correct positioning of the needle 26 in abutment in the bottom of the channel 12.
- correct positioning of the comma needle is meant an arrangement of the needle, with the opening of the eye 27 to the right of the axis 32 of the passage 4 for the hook 16, and with the opening of the eye correctly oriented perpendicular to said axis 32 (which coincides with the vertical axis Z in the figures).
- the referencing of the needle in accordance with this positioning is obtained by inserting the needle 26, the eye 27 at the head, in the channel 12 from right to left, and bringing it into abutment at the bottom of said channel.
- the detection device comprises a first conductive branch 101, a second conductive branch 102 and a third conductive branch 108.
- the branch 101 and the branch 102 are connected together by through a battery 120.
- a free end of the branch 101 comprises a lug 103 which is offset towards the front of the device to come in front of a first face of the battery 120, in contact with said battery.
- the branch 102 comprises an extension 106 which extends transversely (along the Y axis) with respect to the longitudinal axis of said branch 102 (which coincides with the Z axis) and which comes into contact elastic against the other face of the stack 120, behind said stack, by its end substantially at the center in the housing 2a forming in the frame of the housing 9 and more particularly of the part 9d of the said housing.
- branch 101 At the other end of branch 101, opposite to tab 103, connects a first terminal of a light-emitting diode 37, the other terminal of which is connected to one end of conductive branch 108.
- branch 102 includes another end 104 opposite that from which the transverse extension 106 extends.
- needle 26 when the needle 26 is in abutment in the channel 12, it closes the electrical circuit thus formed by connecting in a conductive manner the end 104 of the branch 102 and the other end 110 of branch 108. Since needle 26 is made of metal, generally steel, it actually conducts electric current.
- the branch 101 is housed in the body of the housing 9 between the left edge of this housing and a pillar 111a extending from rear to front from the bottom of said housing.
- the branch 101 is housed in the bottom of the case between the right edge of said case and the rib 24b forming one of the guide rails of the base 22a of the trigger 22. It comprises a hole 102a which can cooperate with a pin 112a which extends from rear to front from the bottom of the case, for better support.
- FIG. 23 and in FIG. 24 Another variant of the second embodiment of an aid device 1 according to the invention is represented in FIG. 23 and in FIG. 24 in which the hook is an open hook 42, which is in said position of threading 21.
- the aid device 1 is represented so that the axis 32 passing through the passage 4 extends substantially vertically so that a sewing thread 28 overlaps a first segment 43 having a longitudinal end supported by the means for driving the hook 42, namely the trigger 22.
- the movement of the open hook 42 from the threading position 21 to the retracted position 20 allows the attachment of the sewing thread 28 to the hook 42, which is housed at the free end 36 of the hook (as shown in Figure 25 and in Figure 26).
- the sewing thread 28 is driven through the eye of the needle by moving the means for driving the hook 42 from the threading position 21 to the said retracted position 20.
- the threading of the needle is carried out without requiring on the part of the user a precise aim, of the opening of the eye of the free end 36 of the filiform loop 16 of the other embodiments in which the hook is a closed loop. [0105]
- the threading of the eyed needle 26 is thus facilitated.
- a variant of an aid device 1 according to the invention comprising a solid body 2 provided with an open filiform hook 42 mounted integral with a trigger 22 guided in movement by a rigid frame 3 between said retracted position 20 and said threading position 21.
- the open hook 42 being placed by a user 46 in said threading position 21 and protruding outside the solid body 2, the user 46 orients the aid device 1 so that the axis 32 passing through the passage 4 extends substantially horizontally.
- the user 46 places a thread 28 to be sewn relative to the open hook 42 so that the thread 28 overlaps the first segment 43 of the open hook 42 and so that the displacement of the hook 42 from said position 21 of threading up to said retracted position causes the sewing thread 28 to be hooked to the free end 36 of the open hook 42 (as shown in FIG. 25), causes the sewing thread 28 to be driven through the eye 27 of the needle 26 and its threading.
- the user 46 extracts the threaded needle 26 from the threading aid device 1 by gripping the needle 26 and one (and only one) of the two strands of yarn 28 passing through the eye 27 and by exerting traction on the needle 26 and the strand 50 of pinched wire 28, along the axis of the guide channel 12 and in the direction indicated by the arrow 49, by sliding the needle in the guide channel 12, whereby a strand 47 of the sewing thread 28 is slidably driven relative to the opening 38 of the eye 27 in the direction indicated by the arrow 48 and relative to the hook 16.42. It results from this simple movement of the needle 26, a dissociation of the threaded needle 26 and the hook 16,42, whereby the needle 26 is threaded in a single step and in a simple way, by a single strand of the sewing thread 28.
- the aid device allows easy threading of an eyed needle with a section of free thread, that is to say independent of a reel of wire, or even with a section of wire of which only a first longitudinal end is free, the other longitudinal end being engaged in a coil of said wire.
- the solid body of the device according to the invention forms, by a bead for positioning the sewing thread in contact with the hook, so that the movement of the hook from said threading position to said retracted position causes the hooking of the thread to the hook.
- this positioning bead is designed as a pointed angle post, with two drooping wings 91 and 92, arranged at an angle, with the point facing upwards. More precisely, the point in question is formed by the end of the edge common to the two wings 91 and 92 of the angle iron, which extends from the plane of the upper face of the case 9 (and more particularly of the part 9c), moving away from said plane in the direction orthogonal to said plane. The edges of the angle iron, formed by the respective edges of the flanges 91 and 92, fall towards said plane from this common edge.
- the wings 91 and 92 of the angle iron are drooping, that is to say they are arranged in the form of “delta” wings with an angle between them.
- their angular opening is turned towards the mouth of the funnel 202 for retracting the hook 16, that is to say also towards the hook 16 when the latter has come out of the housing 2, in its threading position. 21.
- the two wings 91 and 92 of the angle iron are arranged with an angle between them which is substantially equal to 90°.
- This angle value is an advantageous but non-limiting example.
- a section of sewing thread 28 is presented by the user close to the tip formed by the drooping wings 91 and 92, on the side of said drooping wings 91 and 92, that is to say between said wings 91 and 92 on the one hand and the hook 42 on the other hand, the latter being extended, in the threading position.
- the section of sewing thread 28 can then be easily caused by the user to slide along the edges of the wings 91 and 92, from the tip to the bottom of the angle iron. Since the wings 91 and 92 fall towards the mouth of the funnel 202, as mentioned above, the sewing thread indeed descends naturally towards the hook 42, under the free end 45 of the second segment 44 of said open hook 42.
- the pointed angle iron 91.92 is still advantageous. Indeed, whatever the embodiment of the hook 16, in the form of an open loop or in the form of a closed loop, the pointed angle 91,92 protects the end of the hook which forms projecting outwards from the box 9 against the risk of being folded, that is to say folded in the direction of the plane of the part 9c of the box 9. Such a folding can be caused by a gesture of the user, or improper handling of the device 1 when the hook is in the threading position, extending projecting from the housing 9 of said device. Despite the natural elasticity of the wire from which the hook 16 or 42 is formed, this folding could damage the device, for example by preventing the hook from being able to return to the retracted position by manipulating the trigger downwards of the device 1.
- the end of the passage passing through the solid body and extending opposite to said guide section forms a funnel 202 for guiding the hook in movement from the threading position 21 to the retracted position 20.
- this funnel 202 serves to facilitate the return of the hook into the body 2 of the housing 9.
- the invention may be the subject of numerous variants and applications other than those described above.
- the different structural and functional characteristics of each of the embodiments described above should not be considered as combined and/or closely and/or inextricably linked to each other, but to the contrary as simple juxtapositions
- the structural and/or functional characteristics of the different embodiments described above can be the subject in whole or in part of any different juxtaposition or of any different combination.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2200929A FR3132308B1 (fr) | 2022-02-02 | 2022-02-02 | Dispositif d’aide à l’enfilage d’une aiguille à chas |
| PCT/IB2023/050934 WO2023148664A1 (fr) | 2022-02-02 | 2023-02-02 | Dispositif d'aide à l'enfilage d'une aiguille a chas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4473156A1 true EP4473156A1 (fr) | 2024-12-11 |
| EP4473156B1 EP4473156B1 (fr) | 2025-12-03 |
Family
ID=80999264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23703897.1A Active EP4473156B1 (fr) | 2022-02-02 | 2023-02-02 | Dispositif d'aide à l'enfilage d'une aiguille a chas |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12473678B2 (fr) |
| EP (1) | EP4473156B1 (fr) |
| ES (1) | ES3062416T3 (fr) |
| FR (1) | FR3132308B1 (fr) |
| WO (1) | WO2023148664A1 (fr) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US638701A (en) * | 1896-11-24 | 1899-12-12 | Emma J Smith | Needle-threader. |
| US707191A (en) * | 1902-04-14 | 1902-08-19 | Onorato A Aicardi | Needle-threader. |
| US1147656A (en) * | 1914-06-17 | 1915-07-20 | Frances E Spear | Needle-threading device. |
| DE322966C (de) * | 1919-07-15 | 1920-07-12 | Wilhelm Giesser | Einfaedelvorrichtung |
| DE675708C (de) * | 1937-04-13 | 1939-05-15 | Boehmische Clemens Mueller Wer | Drahtschleifeneinfaedler fuer Naehnadeln |
| US2507370A (en) * | 1948-03-09 | 1950-05-09 | Albert E Edwards | Needle threader |
| US2490883A (en) * | 1948-03-12 | 1949-12-13 | Nelpin Mfg Co Inc | Needle threading appliance |
| US2656956A (en) * | 1949-07-27 | 1953-10-27 | Kahn Julian Seth | Needle threader |
| US2777623A (en) * | 1953-10-26 | 1957-01-15 | Balzer Rudolf | Needle threading device |
| US4697370A (en) * | 1986-04-23 | 1987-10-06 | Vissing E D | Fishhook threader |
| US4911341A (en) * | 1988-12-01 | 1990-03-27 | Alan Davis | Needle threading device having a needle receiving bore with an insertable actuator |
| WO1993018220A1 (fr) | 1992-03-09 | 1993-09-16 | Tavaro S.A. | Dispositif enfileur |
| AT1901U1 (de) * | 1996-11-18 | 1998-01-26 | Ernst Ing Rossler | Einfädelvorrichtung |
| JP3393372B2 (ja) * | 1998-10-13 | 2003-04-07 | クロバー株式会社 | 糸通し器 |
| JP3741673B2 (ja) * | 2002-08-08 | 2006-02-01 | クロバー株式会社 | 糸通し器 |
| US8020735B2 (en) * | 2009-02-19 | 2011-09-20 | Pi-Chao Chang | Detachable threader |
| JP7748094B2 (ja) * | 2021-11-12 | 2025-10-02 | クロバー株式会社 | 糸通し器および糸通し機構 |
-
2022
- 2022-02-02 FR FR2200929A patent/FR3132308B1/fr active Active
-
2023
- 2023-02-02 US US18/835,565 patent/US12473678B2/en active Active
- 2023-02-02 ES ES23703897T patent/ES3062416T3/es active Active
- 2023-02-02 WO PCT/IB2023/050934 patent/WO2023148664A1/fr not_active Ceased
- 2023-02-02 EP EP23703897.1A patent/EP4473156B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES3062416T3 (en) | 2026-04-10 |
| FR3132308A1 (fr) | 2023-08-04 |
| EP4473156B1 (fr) | 2025-12-03 |
| WO2023148664A1 (fr) | 2023-08-10 |
| US12473678B2 (en) | 2025-11-18 |
| US20250137180A1 (en) | 2025-05-01 |
| FR3132308B1 (fr) | 2025-12-12 |
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