JP3226095U - Sewing machine thread end cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut a thread end of a sewing machine in which the thread end is very quickly and conveniently completely cut, a large number of thread ends are not left on the thread, the thread end is removed cleanly, and the thread has an orderly appearance in the entire cloth. Provide a device. In a yarn end cutting device, a through hole 11, a fixed blade 40, and a rotatable movable blade 50 are arranged in a bottom plate 10. At the time of use, the bottom plate is mounted on the sewing machine, the thread end of the thread of the cloth penetrates through the through hole, and the movable blade is driven to rotate by the rotating member 60 and the connecting member 70 of the bottom plate so that the movable blade approaches the fixed blade. The thread ends of the thread are sandwiched and the thread ends are cut. [Selection diagram] Figure 1

Description

The present invention relates to a sewing machine mechanism, and more particularly, to a device for cutting a thread end of a sewing machine.

Prior art sewing machines are sewing machines and are used to sew fabrics with threads. A cutting structure used for cutting the thread is arranged on the bed of the sewing machine, and when the user cuts the thread, if the needle of the sewing machine is controlled to be separated from the cloth, the sewing machine drives the cutting structure to cut the thread. Let

However, the design of the blade of the cutting structure of the sewing machine according to the conventional technology, when cutting the thread, leaves many thread ends at the end of the thread of the cloth, the threads are not neatly arranged, and the appearance of the entire cloth is affected. Caused. For this reason, the thread ends are manually sheared using scissors, but this method takes time and labor, and when the thread ends are short, shearing becomes difficult.

Therefore, the present inventor thought that the above-mentioned drawbacks can be ameliorated, and as a result of intensive studies, as a result, the present inventor has proposed the present invention which effectively improves the above-mentioned problems by rational design.

The present invention has been made in view of such conventional problems. In order to solve the above-mentioned problems, the present invention mainly aims to provide a device for cutting a thread end of a sewing machine thread.

In order to solve the above problems, in a thread end cutting device of a sewing machine according to an aspect of the present invention, a through hole, a fixed blade, and a rotatable movable blade are arranged on a bottom plate. At the time of use, the bottom plate is mounted on the sewing machine, the thread end of the thread of the cloth penetrates the through hole, and the sewing machine is driven by the rotating member and the connecting member of the bottom plate so that the movable blade is rotated. Approaches the fixed blade, the yarn end of the yarn is pinched, and the yarn end is cut.

According to the present invention, the yarn end at the end of the yarn is completely cut very quickly and conveniently, a large number of yarn ends are not left on the yarn, and it is not necessary to perform shearing using scissors with time and cost. Therefore, by applying the shearing structure of the present invention, the yarn ends are removed cleanly, and the yarn has an orderly appearance throughout the fabric.

FIG. 4 is a schematic combination view illustrating a yarn end cutting device according to the present invention. It is a rear schematic view explaining the member combination of the present invention. It is sectional drawing which shows rotation of the movable blade of this invention. FIG. 3 is a schematic view of a thread end of the present invention penetrating a through hole of a bottom plate. FIG. 3 is a schematic view in which a yarn end is sandwiched by a movable blade and a fixed blade of the present invention. The schematic diagram which the movable blade of this invention cuts a thread end.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It is needless to say that the present invention is not limited to the following examples, and can be arbitrarily changed without departing from the gist of the present invention.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 6 show a device for cutting a thread end of a thread of a sewing machine of the present invention, which is used for cutting a thread end 102 at the end of a thread 101 on a cloth, and the apparatus is mounted on the sewing machine. The device includes the following members.

First, the bottom plate 10 has a thin plate shape, and has an arc shape at the upper end. According to FIG. 1, the bottom plate 10 has a through hole 11 for penetrating the yarn end 102 of the yarn 101. A plurality of fixing holes 12 are further provided around the bottom plate 10, and at the time of installation, the fixing holes 12 of the bottom plate 10 and the sewing machine are connected by a fixing member (not shown), and the bottom plate 10 is installed on the sewing machine. . As shown in FIGS. 1 to 3, the bottom plate 10 includes a plate 20 and a needle plate 30, the needle plate 30 has a circular plate shape, and the through hole 11 is located at a central portion of the needle plate 30. . A groove 13 is formed in the plate 20, and the through hole 11 is located in the groove 13. An attachment hole 21 is formed in the plate 20 and is located in the groove portion 13, and the needle plate 30 is fixed in the attachment hole 21. The needle plate 30 has a plurality of holes 31, and the plate 20 has a plurality of holes 22 formed inside and above the mounting hole 21. The hole 31 of the needle plate 30 and the corresponding hole 22 of the plate 20 are locked by the lock member 32, and the needle plate 30 is fixed to the plate 20. The plurality of fixing holes 12 are located around the plate 20.

Next, the fixed blade 40 is fixed above the bottom plate 10, and its inner end is located at the side edge of the through hole 11. An outer end of the fixed blade 40 is fixed to the bottom plate 10 and is located outside the groove portion 13, and an inner end of the fixed blade 40 is located inside the groove portion 13.

Next, the movable blade 50 has a thin-plate structure, and the outer edge of the movable blade 50 is pivotally attached to the bottom plate 10 and rotates on the bottom plate 10. The first end 501 of the movable blade 50 is located on the other side of the through hole 11. When the movable blade 50 rotates, the first end 501 of the movable blade 50 moves toward the through hole 11 and the fixed blade 40, and passes over the through hole 11 and the fixed blade 40 to move the movable blade 50. The yarn end 102 is sandwiched by the first end 501 and the fixed blade 40, and the yarn end 102 is cut off. As shown in FIG. 3, the first end 501 of the movable blade 50 rotates to pass above the fixed blade 40.

The second end 502 of the movable blade 50 is pivotally attached to the bottom plate 10 and is located outside the groove portion 13, and the first end 501 of the movable blade 50 is located above the inside of the groove portion 13. .

Further, a concave portion configuration 51 is formed on one side of the first end 501 of the movable blade 50, and when the movable blade 50 rotates, the concave portion configuration 51 approaches the fixed blade 40 and the yarn end 102 is It is pushed into the recess configuration 51. Thereby, the yarn end 102 is fixed to the first end 501 of the movable blade 50, and the yarn end 102 is prevented from being displaced on the movable blade 50.

Next, the rotating member 60 is pivotally attached to the bottom plate 10 and rotates on the bottom plate 10. The rotating member 60 is connected to the movable blade 50 by a connecting member 70. One end of the connecting member 70 is pivotally attached to the rotating member 60 and the other end is pivotally attached to the movable blade 50. When the rotating member 60 rotates, the connecting member 70 interlocks, and the connecting member 70 interlocks so that the movable blade 50 rotates. The rotation member 60 and the bottom plate 10 are pivotally connected to each other outside the groove 13, and the connecting member 70 is located inside the groove 13. In use, the rotating member 60 is driven by a sewing machine.

Further, the bottom plate 10 is pivotally attached to the middle part of the rotating member 60. One end of the connecting member 70 is pivotally attached to the inner end of the rotating member 60, and the other end of the connecting member 70 is pivotally attached to the middle portion of the movable blade 50.

At the time of installation, the bottom plate 10 is installed on the bed of the sewing machine and is located below the needle of the sewing machine. Referring to FIG. 4, when sewing, the thread end 102 of the thread 101 of the sewing machine penetrates the through hole 11 of the bottom plate 10, and when the needle of the sewing machine leaves the cloth, the sewing machine drives the rotating member 60 to move the sewing machine. The blade 50 is interlocked to rotate. When the first end 501 of the movable blade 50 passes above the fixed blade 40, the yarn end 102 is sandwiched (see FIG. 5) and the yarn end 102 is cut. As shown in FIG. 6, the yarn end 102 of the yarn 101 is cut, the yarn 101 has no protruding yarn end 102, the yarn 101 has a neat appearance, and the entire fabric 100 is It presents a visually beautifully arranged aesthetic.

According to the configuration of the present invention, the yarn end at the end of the yarn is completely cut very quickly and conveniently, a large number of yarn ends are not left on the yarn, and it requires time and cost to shear using the scissors. Disappear. Therefore, by applying the shearing structure of the present invention, the yarn ends are removed cleanly, and the entire fabric has a neat appearance.

The above-described embodiments are merely for explaining the technical idea and features of the present invention, and are intended to make those skilled in the art understand the contents of the present invention and to carry out the present invention. It does not limit the scope of the utility model registration request. Therefore, various improvements or modifications having the same effects without departing from the spirit of the present invention shall be included in the scope of claims for utility model registration.

10 Bottom Plate 11 Through Hole 12 Fixing Hole 13 Groove 20 Plate 21 Mounting Hole 22 Hole 30 Needle Plate 32 Lock Member 40 Fixed Blade 50 Movable Blade 51 Recessed Structure 60 Rotating Member 70 Connecting Member 101 Thread 102 Thread End 501 First End 502 Two ends

Claims (10)

A device for cutting a yarn end of a thread of a cloth, which is a device for cutting a yarn end of a sewing machine installed in a sewing machine, wherein the cutting device is
A bottom plate having a thin plate-like structure and having a through hole for penetrating the yarn end of the yarn;
A fixed blade fixed above the bottom plate and having an inner end positioned at a side edge of the through hole,
A movable blade having a thin-plate structure, an outer end of which is pivotally attached to the bottom plate and which rotates on the bottom plate, wherein a first end of the movable blade is located on the other side of the through hole. When is rotated, the first end of the movable blade moves toward the through hole and the fixed blade and passes above the through hole and the fixed blade, and the first end of the movable blade and the fixed blade move the thread. Sandwiching the end and cutting the yarn end,
A rotating member pivotally attached to the bottom plate and rotating on the bottom plate, the rotating member being connected to the movable blade by a connecting member, one end of the connecting member being pivotally attached to the rotating member, and the other end. A sewing machine that is pivotally attached to the movable blade, and that when the rotating member rotates, the connecting member is interlocked, and the movable blade is interlocked by the connecting member to rotate. Device for cutting the thread end of the thread.   The bottom plate includes a plate and a needle plate, the through hole is located at a central portion of the needle plate, a groove is formed in the plate, the through hole is located in the groove, and the plate has a mounting hole. 2. The device for cutting the thread end of the thread of the sewing machine according to claim 1, wherein the needle plate is formed in the groove, and the needle plate is fixed in the mounting hole.   A concave structure is formed on one side of the first end of the movable blade, and when the movable blade rotates, the concave structure approaches the fixed blade, and the yarn end is pushed into the concave structure. The yarn end cutting device of the sewing machine according to claim 1, wherein the position of the yarn end is fixed to the first end of the movable blade by.   The bottom plate is pivotally attached to a middle portion of the rotary member, one end of the connecting member is pivotally attached to an inner end of the rotating member, and the other end of the connecting member is pivotally attached to a middle portion of the movable blade. The device for cutting the thread end of the thread of the sewing machine according to claim 1.   The device for cutting a thread end of a sewing machine thread according to claim 2, wherein the needle plate has a circular plate-like structure.   The needle plate has a plurality of holes, the plate has a plurality of holes formed inside and above the mounting hole, and the holes of the needle plate and the corresponding holes of the plate are locked by a locking member. The device for cutting a thread end of a sewing machine thread according to claim 2, wherein the needle plate is fixed to the plate.   The thread of the sewing machine according to claim 2, wherein an outer end of the fixed blade is fixed to the bottom plate and is located outside the groove, and an inner end of the fixed blade is located inside the groove. Thread end cutting device.   The second end of the movable blade is pivotally attached to the bottom plate to be located outside the groove, and the first end of the movable blade is located above the inside of the groove. A device for cutting the thread end of the thread of the sewing machine described.   The pivot member of the rotary member and the bottom plate is located outside the groove portion, the connecting member is located inside the groove portion, and the rotary member is driven by a sewing machine during use. A device for cutting the thread end of the thread of the sewing machine according to 1.   The plurality of fixing holes are further provided around the plate, and the fixing member connects the fixing hole of the bottom plate and the sewing machine at the time of installation, and the bottom plate is installed on the sewing machine. A device for cutting the thread end of the thread of the sewing machine described.