JP4120835B2 - Threader and threading method - Google Patents

Description

  The present invention relates to a threader and a threading method for passing a thread through a needle hole of a sewing needle.

  As is well known, it is difficult to align a soft thread tip that is rigid with a small needle hole in a free space, and there are many individual differences due to the skill of visual acuity manipulation. Often impedes smooth thread penetration.

  In order to solve the above threading problems, there are two types of threading tools and threaders that have been used conventionally. One of them is an elastic fine steel wire that can penetrate a needle hole that has been widely used for a long time. A diamond-shaped threading part with a V-shaped tip is attached to protrude from one end of the holding plate. When the needle hole penetrates, it shrinks and passes through the needle hole due to the elasticity of the diamond-shaped annular part composed of fine wires, and after passing through the thread, the thread passes through the diamond-shaped annular part that is expanded and restored to its original size. This is an indirect threading method that pulls out the needle and completes threading, replaces the softness of the thread with the rigidity of the steel wire, and expands and replaces the needle hole outside the needle. Do it manually. The other is a method in which the threading part has a thin V-shaped recess at the tip of a fine steel wire, hooks the thread into the recess at the tip and penetrates the needle hole directly with the thread to complete the threading. This type is a direct threading method with an emphasis on the alignment mechanism between the threading part and the needle hole because the threading part is as small as the needle hole and the tip is sharp and difficult to align and penetrate. Operation depends solely on the alignment mechanism of the instrument used.

  Also, the common principle of the latter type of threader is that there is a needle insertion cylinder having a bottomed and large inner diameter that holds the needle in a fixed position with the needle hole facing down in the same body. It has a sliding mechanism that has a thread pushing part with a predetermined length that has a concave part with a thin V-shaped notch at the tip of a thin and fine steel plate. When the sliding mechanism is operated, the threading part is the thread pushing part. Near the bottom of the needle insertion tube, and along a guide groove that is directly connected to a line by connecting through holes provided at right angles to the advancing direction of the thread push-out portion corresponding to the height of the needle hole position. Proceeding, the needle placed in the guide groove just before the needle insertion cylinder is hooked together with the thread, penetrates the needle hole in the needle insertion cylinder, protrudes out of the needle insertion cylinder, and the needle push-out part is restored to its original position. When the needle is pulled out from the needle insertion cylinder, the threading is completed.

Prior art patent documents that have been filed so far in relation to the present invention will be introduced. (See Patent Documents 1 to 5.)
5-001475 ACT 7-039784 JP-A-8-289989 JP 2000-237484 A JP 2001-346490 A

  Therefore, in order to solve the above problems, the present invention has no individual differences in visual acuity and skill in the alignment operation for threading the needle hole, anyone can easily and quickly thread the thread, and The purpose is to develop and provide a threader and a threading method that are simple in structure and hard to break and can be manufactured at low cost.

  As a means for solving this problem, the threader is located substantially at the center of the upper surface of the substrate, and can be rotated around a rotation shaft portion formed of a locking member such as a set screw, nut, or washer. A needle slide guide and a needle which are provided by superposing a non-rotatable presser plate, and the substrate is provided horizontally at one end with respect to the handle portion and at the other end with respect to the threading portion center line of the threading device. A needle hole alignment groove and a Y-shaped groove for adjusting the needle hole direction provided perpendicular to the sliding guide are provided, and the threader can be easily passed through the needle hole at the holding plate and the tip of the holding plate. It consists of a fine elastic steel wire with a threading part provided with a V-shaped rhombus ring at the tip, and the holding plate is made of a resin such as transparent acrylic so that the needle can easily slide on the tip. A movable taper-shaped bent portion is provided.

  The needle hole alignment groove provided on the other end of the substrate has a predetermined depth from the top surface of the substrate to the bottom surface of the needle hole alignment groove so that the height from the needle hole to the center line of the threading portion of the threading device is the same. In order to easily and reliably insert the threading part into the needle hole, a horizontal surface of a predetermined dimension is provided between the inclined parts bent from the inner surface of the side plate at a predetermined angle, and The Y-shaped groove for adjusting the needle hole direction is located on the extension line of the center part of the needle hole alignment groove, and is provided outside the needle sliding guide so that the needle hole extends in the longitudinal direction of the needle sliding guide when the needle head is inserted. On the other hand, it can be adjusted in the same direction.

  Further, a convex lens structure having a function of a magnifying mirror is provided at the distal end portion of the transparent pressing plate, and the distal end of the threading portion and the needle hole of the threading tool are enlarged to facilitate the insertion into the needle hole.

  In addition, the needle head is inserted into the Y-shaped groove for adjusting the needle hole direction while pressing it downward from the upper direction to forcibly adjust the direction of the needle hole, and then the needle hole is threaded along the needle hole alignment groove. Adjust the vertical position so that it matches the tip of the threading part, move the needle head parallel to the needle sliding guide and insert it, and rotate the threading tool forward by a predetermined angle. After passing the thread through the threading part, the needle is moved while being shifted in the direction of the tip of the threading part, and the thread is passed through the needle hole.

  As an effect of the present invention, the threader is positioned substantially at the center of the upper surface of the substrate, and can be rotated with a threading tool that is rotatable about a rotation shaft portion formed of a locking member such as a set screw, a nut, or a washer. A presser plate fixed to the needle is overlapped, and the substrate is provided on a needle sliding guide and a needle sliding guide provided horizontally on the handle part at one end and the threading part center line of the threading tool at the other end. A needle hole alignment groove and a Y-shaped groove for adjusting the needle hole direction provided vertically are provided, and the threading device is elastic and fine that can be easily penetrated into the needle hole at the tip of the holding plate and the holding plate. It is a steel wire, and its tip is composed of a threading part formed in a V-shaped rhombus ring, and the presser plate is made of a resin such as transparent acrylic, and the needle can be easily slid on the tip. The needle hole alignment groove provided on the other end of the substrate is at a height from the needle hole to the center line of the threading part of the threading tool. In order to provide the same depth from the top surface of the substrate to the bottom surface of the needle hole alignment groove at a predetermined depth, and in order to easily and reliably insert the threading portion into the needle hole, the inner surface of the side plate is tapered. The Y-shaped groove for adjusting the needle hole direction is located on the extension line of the center part of the needle hole alignment groove, and is provided between the inclined parts bent at a predetermined angle. The needle hole is provided on the outside so that the needle hole can be adjusted in the same direction as the longitudinal direction of the needle sliding guide when the needle head is inserted, and the needle hole alignment groove provided on the other end of the substrate has a needle hole and a threading device. Provide a predetermined depth from the top surface of the substrate to the bottom surface of the needle hole alignment groove so that the height to the center line of the threading portion is the same, and easy and reliable insertion of the threading portion into the needle hole Therefore, a horizontal surface of a predetermined dimension is provided between the inclined portions that are bent from the inner surface of the side plate in a tapered shape at a predetermined angle, and The Y-shaped groove for adjusting the needle hole direction is located on the extension line of the center part of the needle hole alignment groove, and is provided outside the needle sliding guide so that the needle hole extends in the longitudinal direction of the needle sliding guide when the needle head is inserted. By providing it so that it can be adjusted in the same direction, anyone can easily, efficiently and safely thread, and individual differences in threading operations due to visual acuity and skill can be reduced. .

  In addition, there are very beneficial effects such as a small number of parts, a simple structure, and easy-to-obtain materials and parts that can be manufactured at low cost.

  As the best mode of the present invention, the needle diameter and the size of the needle hole have a slight error depending on the manufacturer and purpose of use, so the width and height dimensions of the Y-shaped groove for adjusting the needle hole direction and the needle hole alignment groove vary. It is important to set the optimal dimensions considering the above.

  Accordingly, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. A threader for easily passing a thread through a needle hole, the threader being substantially on the upper surface of the substrate (2). A threading tool (3) and a pivot that is located in the center and can be pivoted around a pivot shaft (C) made of a locking member such as a set screw (B), nut (N), or washer (W). The presser plate (1) that is impossiblely fixed is superposed and provided, and the substrate (2) has a handle (2e) at one end and a threader (3a) center line of the threader (3) at the other end. A needle sliding guide (2b) provided horizontally, a needle hole alignment groove (2a) provided perpendicular to the needle sliding guide (2b), and a Y-shaped groove (2c) for adjusting the needle hole direction are provided. Further, the threading tool (3) is a rhombus ring having a V-shaped tip with a holding plate (3b) and an elastic fine steel wire that can easily penetrate the needle hole (NEa) at the tip of the holding plate. The presser plate (1) is made of a resin such as transparent acrylic, and a tapered bent portion (1a) with which a needle can easily slide at the tip. ) Is provided.

  Further, the needle hole alignment groove (2a) provided at the other end of the substrate (2) has the same height from the needle hole (NEa) to the center line of the threading part (3a) of the threading tool (3). A side plate is provided to provide a predetermined depth (H) from the top surface of the substrate (2) to the bottom surface of the needle hole alignment groove (2a), and to insert the threading portion into the needle hole easily and reliably. (2f) A horizontal surface having a predetermined dimension (Y) is provided between inclined portions which are bent from the inner surface to a predetermined angle (β), and the Y-shaped groove (2c) for adjusting the needle hole direction Located on the extended line of the center of the alignment groove (2a) and provided outside the needle sliding guide (2b), the needle hole (NEa) is the longitudinal length of the needle sliding guide (2b) when the needle (N) head is inserted. The threading device is characterized by being provided so as to be adjustable in the same direction with respect to the direction.

  In addition, a convex lens structure (CL) having a magnifying glass function is provided at the tip of the transparent presser plate (1), and the tip of the threading portion (3a) and the needle hole (NEa) of the threading device (3) are enlarged. The threading device is characterized in that it can be easily inserted into the needle hole (NEa).

  Next, the outline of the structure of the present invention will be described. The present invention uses the existing threading tool (3) to newly adjust the direction of the needle hole (NEa) and the thread in order to solve the conventional problems. In order to add a needle hole position adjustment and height adjustment function to pass the threading part (3a) tip of the threader (3) easily and securely through the needle hole (NEa), a set screw (B ) · Threading tool (3) with additional rotation shaft holes on the substrate (2) provided with the rotation shaft (C) composed of locking members such as nuts (N) and washers (W) And the presser plate (1) are superposed, and the threader (3) is rotatable about a predetermined angle (α) about the rotary shaft (C), and the presser plate (1) Since no rotation is required, a notch is provided in order to fix the needle sliding guide (2b) to the end face so as not to rotate. Locking members such as set screws (B), nuts (N), and washers (W) provided on the rotating shaft (C) lighten the set screws when rotating the threader (3). This is to make it easier to loosen and turn. In addition, the rotation shaft portion (C) provided at substantially the center of the substrate is formed in a long hole so as to be able to cope with variations in the needle diameter size.

  The main purpose of the threading tool (3) to rotate is to pass the thread through the threading part (3a), and the other is the needle (NE) depending on the type and size of the needle (NE). This is because the distance from the head to the needle hole (NEa) is slightly different, so that it is finely adjusted by rotating in the vertical direction. Further, the circular notch provided in the handle portion of the substrate makes it easy to rotate by picking both the front and back surfaces of the threading device (3) with fingers when the threading device (3) is rotated.

  The Y-shaped groove (2c) for adjusting the needle hole direction forcibly changes the direction of the needle hole (NEa) by pushing the head of the needle (NE) downward from the top to the needle sliding guide (2b). ) In the same direction as the longitudinal direction, and the inner width dimension (X) of the groove is set to a dimension suitable for the needle head. Further, the needle hole alignment groove (2a) is provided with a horizontal portion having a predetermined dimension (Y) so that the tip of the threading portion (3a) of the threading device (3) is securely inserted into the needle hole (NEa). Further, the predetermined dimension (Z) from the slope base point of the needle hole alignment groove (2a) to the tip of the threading part (3a) is set to about ½ of the needle diameter. Further, in order to smoothly translate the needle (NE) along the needle sliding guide (2b), an inclined portion bent in a tapered shape with a predetermined angle (β) is provided.

  Next, the threading work procedures 1) to 6) according to the present invention will be described. As shown in FIG. 5, the head of the needle (NE) is attached to the Y-shaped groove (2c) for adjusting the needle hole direction of the threader. After the needle hole (NEa) is forcibly adjusted by inserting the needle hole in the downward direction from above, the needle hole (NEa) is threaded along the needle hole alignment groove (2a). The vertical position is adjusted so as to coincide with the tip, the needle head is moved in parallel with the needle sliding guide (2b) and inserted, and the threading tool (3) is moved forward by a predetermined angle. (Α) (about 30 to 45 degrees) is rotated to pass the thread (T) through the threading part (3a), and then the needle (NE) is shifted toward the tip of the threading part (3a). When moved, the thread (T) naturally passes through the needle hole (NEa).

  As another embodiment, as a countermeasure for the elderly and the blind, as shown in FIG. 6, a convex lens structure (CL) having a magnifying glass function at the tip of the holding plate (1) of the present invention is provided. ) And an enlarged depiction of the tip of the threading portion (3a) and the needle hole (NEa) of the threading tool (3), and further easy insertion into the needle hole (NEa).

  The threader of this invention can be threaded easily, efficiently and safely by anyone, and can reduce individual differences in threading operation due to visual acuity and skillful operation. Therefore, it can be manufactured at low cost by using materials and parts that are easy to obtain and easy to obtain, and thus has industrial applicability in terms of contributing to many markets.

An embodiment of the present invention is shown, in which (A) is a plan view and (B) is a partially cutaway front view. One Example of this invention is shown, (A) is an aa arrow expanded sectional view of FIG. 1 (A), (B) is an bb arrow expanded sectional view of FIG. 1 (A). Shows an embodiment of the invention, a c-c arrow enlarged sectional view of FIG. 1 (A). The usage example of this invention is shown, (A) is a plan view when the threading portion tip is passed through the needle hole, and (B) is a partially broken front view. The example of use of this invention is shown and the threading work procedure manual is shown. The other Example of this invention is shown, (A) is a top view, (B) is a partially missing front view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holding plate 1 'Holding plate with a convex lens 1a Bending part 2 Substrate 2a Needle hole alignment groove 2b Needle sliding guide 2c Needle hole direction adjustment Y groove 2d Notch part 2e Handle part 2f Side plate 3 Threading tool 3a Threading part 3b Holding plate B Set screw C Rotating shaft H Predetermined depth N Nut NE Needle NEa Needle hole T Thread W Washer X Inner width dimension of Y-shaped groove for adjusting needle hole direction Y Predetermined dimension Z Predetermined dimension α Predetermined angle β Predetermined angle

Claims (4)

A threader for threading the needle through the needle hole ,
The threader superimposes a presser plate (1) fixed to the rotation shaft portion (C) so as not to rotate about the center of the upper surface of the substrate (2 ), and a rotatable threader (3). ,
The rotating shaft portion (C) is connected to the set screw (B) and the threading tool (3) from the lower surface of the superposed pressing plate (1) and the threading tool (3) via the pressing plate (1) and the threading tool (3). It is pivotally attached with a locking member consisting of a nut (N) and washer (W) ,
The threader (3) has a handle (2e) at one end and a threader (3a) at the other end,
Yarn insertion portions (3a) are horizontally with respect to the center line, and Harisuri dynamic guide (2b), relative to the Harisuri dynamic guide (2b), perpendicular to the needle hole alignment grooves (2a) needle hole Provide Y-shaped groove (2c) for direction adjustment,
The threading tool (3) is an elastic steel wire that can pass through a holding plate (3b) and a needle hole (NEa) formed at the tip of the holding plate (3b), and has a V-shaped tip. Provide a threading part (3a) formed in a diamond-shaped ring ,
The presser plate (1) is made of a transparent resin, and is provided with a taper-shaped bent portion (1a) on which the needle can slide at the tip portion. The needle hole alignment groove (2a) provided at the other end of the substrate (2) has the same height from the needle hole (NEa) to the center line of the threading portion (3a) of the threading device (3). (2) A taper is formed from the inner surface of the side plate (2f) to provide a predetermined depth (H) from the upper surface portion to the bottom surface of the needle hole alignment groove (2a) and to insert the threading portion into the needle hole. A horizontal surface having a predetermined dimension (Y) is provided between the inclined portions bent at a predetermined angle (β), and the Y-shaped groove (2c) for adjusting the needle hole direction is formed at the center of the needle hole alignment groove (2a). Located on the extension line, provided outside the needle sliding guide (2b), the needle hole (NEa) is adjusted in the same direction as the longitudinal direction of the needle sliding guide (2b) when the needle (NE) head is inserted. The threader according to claim 1, wherein the threader is provided. A convex lens structure (CL) having a function of a magnifying mirror is provided at the tip of the transparent pressing plate (1), and the threading part (3a) tip of the threading tool (3) and the needle hole (NEa) are enlarged and depicted. The threader according to claim 1 or 2 , wherein insertion into the needle hole (NEa) is made accurate . Insert the head of the needle (NE) into the Y-shaped groove (2c) for adjusting the needle hole direction while pressing it downward from the upper direction and forcefully adjust the direction of the needle hole (NEa), then align the needle hole Adjust the vertical position of the needle hole (NEa) along the groove (2a) so as to coincide with the tip of the threading part (3a), and move the needle head parallel to the needle sliding guide (2b). After inserting and threading the threading tool (3) by a predetermined angle (α ) in the forward direction and passing the thread (T) through the threading part (3a), the needle (NE) is threaded. (3a) A threading method characterized in that the thread (T) is passed through the needle hole (NEa) by moving while shifting in the tip direction.

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