Tacking device using needle punch needle

Abstract

To provide a tacking device that enables sewing without using marking pins and minimizes use of a presser lifting lever, thereby solving the problem in which the process of sewing clothes while raising and lowering the presser lifting lever on a sewing machine and removing marking pins is extremely cumbersome, and there are issues such as the risk of losing marking pins or getting pricked by them, the risk of breaking needles due to contact between marking pins and sewing needles, and the risk of sawing machine malfunction caused by marking pins getting caught inside the sawing machine.SOLUTION: A tacking device of the present invention is an alternative for tacking cloth or the like without using marking pins. In this device, after the needle punch needle 5 attached to the tip of a handle 1, with thread threaded through it, pierces through the cloth or the like held between a cloth presser and a rest seat, only the thread remains piercing through the cloth by pulling up the needle punch needle. By repeating this operation, the cloth can be prevented from being shifted and can be tacked.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a temporary fastening device that replaces a pin and prevents slippage of overlapping pieces of fabric (hereinafter simply referred to as "fabric") and temporarily fastens them together when sewing two pieces of fabric together with the front sides facing each other with a sewing machine. [Background technology]

[0002] The sewing machine will be explained using Figure 10. Figures 10(a) and (b) are a perspective view and a side view of the same part of the sewing machine, but the machine sews by pinching the "fabric" 4 in Figure 10(b) between the upper "presser foot" 11 and the lower "feed dog" 10 and intertwining it with thread threaded through the "sewing needle" 13 in Figure 10(a). Because the "feed dog" 10 moves in a straight line due to the machine's structure, it is primarily used for straight stitching, but curved stitching is also possible.

[0003] To sew curved stitches, it is necessary to rotate the "fabric" 4 by hand in accordance with the linear movement of the "feed dog" 10, but this method causes misalignment between the top and bottom of the "fabric" 4 sandwiched between the "presser foot" 11 and the "feed dog" 10. Therefore, as shown in Figure 11, the top and bottom "fabric" 4 are currently temporarily fastened together with "pins" 14 to prevent misalignment. In particular, when the radius of the curved part is small, the misalignment becomes large, so the "pins" 14 must be used frequently.

[0004] It is also possible to temporarily fasten the fabric with a "clip" (not shown) instead of the "marking pin" 14, but this is cumbersome to attach and remove, and is not suitable for sewing fine curves. On the other hand, the stapler shown in Patent Document 1 and FIG. 13 is for fastening paper or the like, not for fastening "cloth" 4.

[0005] Current sewing machines have the problem that they require the use of auxiliary tools such as "pins" 14 and "clips" to prevent the "fabric" 4 from slipping and to temporarily fasten it in place. This is a factor that reduces the operability and efficiency of the sewing machine.

[0006] There is also a handicraft technique called needle punching, in which thread threaded through a special needle is inserted into "fabric" 4 to create a pattern or picture. The needle is called by a variety of names, including "embroidery needle" in Patent Document 2 and "embroidery machine" in Patent Document 3, as well as "punch needle," "needle punch needle," "cultural embroidery needle," and "free stitching needle." In this application, the needle used for needle punching will be called a "needle punch needle" 5. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 11-188658 [Patent Document 2] Application No. 07-019388 [Patent Document 3] Utility Model Publication No. 57-48290 (microfilm) Summary of the Invention [Problem to be solved by the invention]

[0008] When sewing "cloth" 4 with the sewing machine shown in Figure 10(b), the "cloth" 4 is sandwiched between the "feed dog" 10 and the "presser foot" 11, and the process of raising and lowering the "presser foot lifting lever" 12, which is linked to the "presser foot" 11, and removing the "pins" 14 is extremely tedious. Since sewing with a sewing machine involves repeating the process of "lowering the "presser foot lifting lever" 12, sewing, raising the "presser foot lifting lever" 12, and removing the "pins" 14," the number of times the "presser foot lifting lever" 12 is operated is two for each removal of the "pins" 14. For example, if 50 "pins" 14 are used to sew a baby bib like the one shown in Figure 11, the number of times the "presser foot lifting lever" 12 is operated is 100.

[0009] Furthermore, when temporarily fastening the "cloth" 4 using the "pins" 14 in Figure 11, care must be taken with how the "pins" 14 are inserted into the "cloth" 4, the position at which they are inserted, the spacing between the pins, etc., and there is a risk of injury to the human body if the "pins" 14 are lost or pierced by the hand.

[0010] Furthermore, when sewing "cloth" 4 with a sewing machine, there are problems such as the "pin" 14 coming into contact with the "sewing needle" 13 as shown in Figure 12 while the "pin" 14 is still inserted, which can cause problems such as breaking the "sewing needle" 13 or the "pin" 14 as shown in Figures 12(a) and 12(b), bending the "pin" 14 as shown in Figure 12(c), and breaking the sewing machine itself due to the "pin" 14 getting caught inside the sewing machine as shown in Figure 12(d). [Means for solving the problem]

[0011] In order to solve the above problems, it is necessary to temporarily fasten the "cloth" 4 in a way that does not use the "pins" 14 when sewing the "cloth" 4 with a sewing machine, and to sew the "cloth" 4 in a way that does not make extensive use of the "presser foot lifting lever" 12.

[0012] The present invention is a temporary fastening device that is made up of three parts: a "handle" 1 with a "needle punch needle" 5 attached, a "cloth presser foot" 6, and a "base" 3, connected in that order at an "end" 23, and is freely rotatable around the "end" 23 as a pivot axis, and the "cloth presser foot" 6 functions to press down multiple pieces of "cloth" 4 that are sandwiched between it and the "base" 3.

[0013] That is, after the "needle punch needle" 5 with the "thread" 16 threaded therethrough has pierced the "cloth" 4, the "needle punch needle" 5 is pulled up, leaving only the "thread" 16 piercing the "cloth" 4, and by repeating this process, it is possible to prevent the upper and lower "cloths" 4 from shifting and to temporarily fasten them together. [Effects of the Invention]

[0014] According to the present invention, by providing a device that prevents the "fabric" 4 from slipping when sewing with a sewing machine, the "fabric" 4 can be temporarily fastened without using the "pins" 14. This eliminates the need for the complicated task of raising and lowering the "presser foot lifter" 12 and removing the "pins" 14 while sewing, speeds up sewing, and prevents the loss of the "pins" 14, hand injuries, and breakdowns of the sewing machine. In other words, this invention is expected to improve the efficiency and safety of sewing work, as well as increase the utility value of sewing machines in the industrial world. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a front view of a temporary fastening device according to the present invention. [Figure 2] FIG. [Figure 3] 3 is a cross-sectional view of the temporary fastening device taken along line BB in FIG. 2. [Figure 4] 2 is a cross-sectional view of the temporary fastening device taken along line AA in FIG. 1. FIG. [Figure 5] FIG. 5 is an enlarged view of the front part of FIG. [Figure 6] This is a perspective view of the temporary fastening device with a "thread" 16 threaded through it, and a diagram showing the operation pattern when temporarily fastening a "cloth" 4 with the temporary fastening device. [Figure 7] FIG. 10 is a diagram showing the state in which "cloth" 4 is temporarily fastened using the same temporary fastening device. [Figure 8] 1A and 1B are a side view and a plan view of a needle set screw 9, a needle punch needle 5, and a handle 1 before the needle punch needle 5 is attached to the handle 1. [Figure 9] The figures show examples (a), (b), and (c) of a plan view of the surface of the "cloth holder" 6 and the "base" 3 that clamps the "cloth" 4 (the "cloth holder" 6 is shown from below) and side views. [Figure 10] FIG. [Figure 11] This is a diagram showing "cloth" 4 being temporarily fastened with "pins" 14. [Figure 12] This is a diagram showing how a needle breaks due to contact between a "sewing needle" 13 and a "safety pin" 14. [Figure 13]FIG. 1 is a cross-sectional view showing the configuration of a conventional "stapler." [Figure 14] FIG. 1 is a diagram illustrating the use of a conventional "needle punch needle" 5. DETAILED DESCRIPTION OF THE INVENTION

[0016] A "staplers" of the shape shown in FIG. 13 of Patent Document 1 has been known for some time, but the temporary fastening device provided by the present invention has a metal "handle" 1 pivotally attached to the rear of the "cloth presser foot" 6 in FIG. 4, which functions in the same way as a "stapler" having a metal "handle" 19 pivotally attached to the rear of the "magazine" 17.

[0017] The difference between the temporary fastening device of the present invention and a stapler is that a stapler uses a driver 18 attached to the end of a metal handle 19 to drive out U-shaped staples (not shown) stored in a metal magazine 17, thereby clinching paper or the like, whereas the temporary fastening device of the present invention, as shown in Figures 4 and 5, uses a needle punch needle 5 attached to the handle 1 to pierce the fabric 4 sandwiched between the fabric presser foot 6 and the base 3 and then pulls it up, thereby securing the upper and lower fabrics 4 together using only a thread 16, as shown in Figure 7, and by repeating this process, the upper and lower fabrics 4 can be prevented from shifting and can be temporarily fastened.

[0018] The configuration of the basting device of the present invention is illustrated in FIG. 4. The three components—a handle 1 with a needle-punch needle 5 attached, a presser foot 6, and a base 3—are connected in this order at the end 23, and the device is rotatable around the end 23. A coil spring 7 is attached between the handle 1 and the presser foot 6, and a leaf spring 8 is attached between the presser foot 6 and the base 3. When pressure is applied to the handle 1, presser foot 6, and base 3 from above and below, the three components combine and return to their original position when pressure is released. As shown in FIG. 6, the relationship between these three components is such that the presser foot 6 first descends onto the fabric 4 on the base 3, followed by the handle 1 with the needle-punch needle 5 attached. An example of the selection of the springs is shown.

[0019] While the "plate spring" 8 shown in Figure 4 serves to create a gap between the "cloth presser foot" 6 and the "base" 3 for the "cloth" 4 to be inserted, the "coil spring" 7 serves to pull the "needle punch needle" 5 out of the "cloth" 4 sandwiched between the "cloth presser foot" 6 and the "base" 3, while also serving to press down the "cloth" 4 between the "base" 3 via the "cloth presser foot" 6. In other words, the "needle punch needle" 5 cannot properly insert the needle if the tension in the "cloth" 4 is weak, so it is necessary to prevent the "cloth" 4 from slackening. For this reason, the "coil spring" 7 between the "handle" 1 and the "cloth presser foot" 6 must be strong enough to prevent the "cloth" 4 from slackening.

[0020] Conventional needle punching is explained using Figure 14. It involves using a hollow "needle punch needle" 5 to embed embroidery thread or wool yarn into fabric. This is a handicraft technique in which patterns and pictures can be created by simply threading "thread" 16 through the "needle punch needle" 5 and stitching it as if drawing an illustration on "cloth" 4 stretched over a "stitch hoop" 20 or the like.

[0021] The present invention aims to achieve a temporary fastening effect on "fabric" 4 using this "needle-punch needle" 5. This "needle-punch needle" 5 is a needle with the tip of a long, thin pipe cut at an acute angle, as shown in Figure 6(d), and on the opposite side of the "cut surface" 24 is provided a "horizontal hole" 25 for passing a "thread" 16, as shown in Figures 6(d) and (e). When using the "needle-punch needle" 5, the "thread" 16 is pulled out from the top of the pipe-shaped needle toward the needle tip, and then the pulled "thread" 16 is brought out further into the "horizontal hole" 25 at the needle tip and then inserted into "fabric" 4.

[0022] In other words, the operating pattern when using the temporary fastening device of the present invention is as follows: as shown in Figure 6(a), a "needle punch needle" 5 with a "thread" 16 threaded through it is inserted from the top of the "handle" 1 and then the "needle punch needle" 5 is pulled up as shown in Figure 6(b), so that only the "thread" 16 remains piercing the upper and lower "fabrics" 4; and by repeatedly inserting the "needle punch needle" 5 as shown in Figure 6(c), the "thread" 16 penetrates the upper and lower "fabrics" 4 as shown in Figure 7, creating a loop on the lower side, preventing the upper and lower fabrics from shifting and enabling temporary fastening.

[0023] In order to securely fasten the upper and lower "fabric" 4 together, it is necessary that the "thread" 16 remains in a loop on the underside of the "fabric" 4 when it penetrates the "fabric" 4. To achieve this, when the "needle-punch needle" 5 is pulled out of the "fabric" 4, the "thread" 16 must be supplied from above the "needle-punch needle" 5 in the amount of "thread" 16 left below the "fabric" 4. Furthermore, since it is necessary to prevent the "thread" 16 inserted into the "fabric" 4 from slipping out from the bottom to the top, suitable fabrics for the "fabric" 4 include medium to heavy, tightly woven fabrics such as sheeting, denim, and oxford fabrics, and the "thread" 16 to be used should be No. 25 embroidery thread, No. 40 lace thread, sewing thread, etc., and it is preferable to use a thin "needle-punch needle" 5, which, unlike embroidery, will cause less damage to the "fabric" 4.

[0024] In Figure 6, when "needle punch needle" 5 is continuously pierced into "fabric" 4, if the needle advances in the opposite direction to the "cut surface" 24 at the needle tip in Figure 6(b), it will pierce "thread" 16 coming out of the "horizontal hole" 25 of the needle, which will not work well. Also, since the needle will be piercing the outside of the "finished line" 15 in Figure 11 so as to be parallel to the "finished line" 15, it is necessary to fix the "cut surface" 24 of the needle so that it always faces in the direction of advance.

[0025] As described above, in the temporary fastening device of the present invention, with the "needle-punch needle" 5 in FIG. 4 facing forward and the "end" 23 facing backward, the "needle-punch needle" 5 in FIG. 8 is provided with an "arrow-feather-shaped protrusion" 21, and the top of the "handle" 1 is provided with a "groove for the arrow-feather-shaped protrusion" 22. When the "needle-punch needle" 5 is inserted along the groove and fastened with the "needle-setting screw" 9, the "cutting surface" 24 of the needle tip of the "needle-punch needle" 5 is fixed so that it always faces in a fixed direction. This also makes it possible to change the "needle-punch needle" 5 depending on the type of "fabric" 4. For example, for a right-handed person, the "cutting surface" 24 faces left and moves leftward, while for a left-handed person, the "cutting surface" 24 faces right and moves rightward. In this way, the orientation of the "cutting surface" 24 can be determined depending on whether the person is right-handed or left-handed.

[0026] Furthermore, as mentioned above, in order to insert the "needle punch needle" 5 into the "fabric" 4, it is necessary to prevent the "fabric" 4 from slackening. The basting device of the present invention is equipped with a slack prevention means for preventing slackening of the "fabric" 4 sandwiched between the "fabric presser foot" 6 and the "base" 3. For example, as shown in FIG. 9(a), protrusions are provided on the underside of the "fabric presser foot" 6 and on the upper side of the "base" 3, and in combination with the force of the "coil spring" 7 between the "handle" 1 and the "fabric presser foot" 6, this prevents slackening of the "fabric" 4 sandwiched between the "fabric presser foot" 6 and the "base" 3. In the example of FIG. 9(a), there are three protrusions on the "fabric presser foot" 6 side and three protrusions on the "base" 3 side, but by shifting the positions of the upper and lower protrusions, the "fabric" 4 is fixed with six protrusions.

[0027] Figure 9(a) shows an example of clamping and fixing the "cloth" 4 between the "cloth holder" 6 and protrusions attached to the "base" 3, but other possible methods include fixing the "cloth" 4 by attaching something like a rubber ring to the underside of the "cloth holder" 6 and the top of the "base" 3, as shown in Figure 9(b), or examples such as Figure 9(c) which combines Figure 9(a) and Figure 9(b).

[0028] Using such a basting tool, for example, basting is done 2 to 3 millimeters outside the "finished line" 15 in Figure 11, and then the sewing machine is used to sew along the "finished line" 15. After that, by removing the basting "thread" 16, it is possible to sew beautifully and neatly without using "marking pins" 14, clips, etc. [Industrial Applicability]

[0029] In recent years, the popularity of handmade items has grown, with an increasing number of people selling their own creations over the Internet. Among these, the sewing machine is one of the most important tools, significantly affecting sewing skills and efficiency. By improving the operability and functionality of sewing machines, this invention can improve the quality and speed of sewing, allowing sewing machine users to create more items and enjoy economic benefits. The sewing machine market will also expand globally, greatly contributing to the growth of the industry. [Explanation of symbols]

[0030] 1 handle 2 Steering wheel covers 3. Pedestal 4 Layered cloth etc. (read as cloth) 5 needle punch needles 6 Cloth presser foot 7 Coil spring 8 Leaf springs 9 Needle fixing screw 10 Feed dog 11 Presser foot 12 Presser foot lifter lever 13 Sewing Needle 14 Sewing pins 15 Finished line 16 Thread 17 Magazine 18 Drivers 19 Handle (stapler) 20 stitch hoops 21. Arrow-shaped protrusions 22 Groove for inserting the feather-shaped protrusion 23 End 24 Cut Surfaces 25 horizontal holes

Claims

1. The temporary fastening device is made up of three parts, a handle (1) with a needle punch needle (5) attached, a cloth presser foot (6), and a base (3), connected in this order at their ends (23), and is rotatable around the end (23) as a rotation axis. The cloth presser foot (6) sandwiches multiple pieces of cloth (4) between it and the base (3), and after the needle punch needle (5) with a thread (16) threaded therethrough pierces the cloth (4), the needle punch needle (5) is pulled up, leaving only the thread (16) piercing the upper and lower pieces of cloth (4).

2. 2. The temporary fastening device according to claim 1, wherein a protrusion (21) is attached to the needle punch needle (5), and a groove (22) is provided on the upper part of the handle (1) into which the protrusion fits, and by inserting the needle punch needle (5) into the groove, the cut surface (24) of the needle tip of the needle punch needle (5) is fixed so that it always faces in a fixed direction.

3. 2. The temporary fastening device according to claim 1, wherein means for preventing loosening of the fabric (4) sandwiched between the fabric presser foot (6) and the base (3) are provided below the fabric presser foot (6) and above the base (3).

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