JPH063274U - The presser foot of the sewing machine for sewing the fastener - Google Patents

Abstract

(57) [Summary] [Purpose] Easily sew fasteners in place. Also,
Sew on the fabric close to the fastener. [Structure] The presser foot 1 is composed of a presser foot 4 and a shank 2. A guide surface 7 is provided on the side surface of the presser foot 4. Guide surface 7
Is connected to the presser bar 3 via the shank 2 so that it is located between the center of the presser bar 3 and the needle drop point 6. [Effect] Since the fastener clip can be sewn along the guide surface 7 of the presser foot 4, the fastener can be easily sewn to an accurate position. Further, since the guide surface 7 is provided between the center of the presser bar 3 and the needle drop point 6, the portion close to the fastener peeling can be sewn on the cloth.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a presser foot used for an overlock sewing machine, and more particularly to a presser foot used for sewing a fastener.

[0002]

[Prior art]

 When the fastener is sewn to the fabric with a lock sewing machine, the side edges of the fastener can be securely fixed to the fabric. By the way, the presser foot of the conventional lock sewing machine has a structure in which the cloth is pressed against the feed dog and transferred. To sew fasteners using the presser foot of this structure, the fasteners are piled in place on the fabric, and the presser foot is pressed against the feed dog to be transferred with the cloth by the feed tooth.

[0003]

[Problems to be solved by the device]

 However, when the fasteners are sewn in this state, it is difficult to accurately align the fasteners with the side edges of the fabric. This is because it is difficult to transport the fasteners along the side edges of the fabric accurately. In addition, if the fastener is sewn in this state, there is a drawback that the needle easily accidentally hits the fastener and is damaged. This defect can be eliminated by sewing the fastener file along the side edge of the presser foot. That is, the fastener can be sewn to a fixed position by arranging the fastener bar along the side edge of the presser foot, using the presser foot as a guide of the fastener, and sewing the presser foot while pressing only the fastener base cloth. However, in practice, the fastener cannot be sewn to the fabric in this state. This is because the needle drop point of the presser foot is separated from the side edge by about 1 cm. The distance between the side edge of the presser foot and the needle drop point is the distance between the fastener clip and the sewn part to be sewn on the cloth. When the side edge of the fastener is 1 cm away from the needle drop point, it is actually extremely difficult to sew the fastener. In addition, even if the sewing can be actually performed, if the sewing distance is long, the portion where the fastener and the cloth are sewn together becomes longer from the fastener, so that the sewing state, that is, the design becomes worse. When fastening fasteners to fabric, the stitching area should be as close as possible to the side edges of the fastener.

The present invention was developed to solve this drawback of the conventional presser foot, and an important object of the present invention is to accurately guide the fastener to the cloth and place it in the correct position. It is to provide a presser foot of a sewing machine for sewing fasteners that can be sewn. Another important object of this invention is to provide a presser foot whose sewing position can be approached to a fastener.

[0005]

[Means for Solving the Problems]

 The presser foot 1 of the sewing machine to which the fastener of the present invention is sewn has the following structure in order to achieve the above-mentioned object. (A) The presser foot 1 has a shank 2 attached to the lower end of the presser bar 3 of the sewing machine, and a presser 4 connected to the presser bar 3 via the shank 2. (B) The presser foot 4 is rotatably connected to the shank 2 through a rotary shaft 5 in a vertical plane so that the presser foot 4 can be slightly tilted. (C) The presser foot 4 is connected to the shank 2 on the feeding side with respect to the needle drop point 6. (D) The side surface of the presser foot 4 has a guide surface 7 along which the side edge of the fastener extends. (E) The guide surface 7 is provided so as to extend in the cloth transfer direction so that the fastener can be guided along the guide surface. (F) The guide surface 7 is located between the center of the presser bar 3 and the needle drop point 6 in order to reduce the distance between the fastener clip and the sewn portion.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. However, the embodiment shown below is an example of a presser foot for embodying the technical idea of the present invention, and the presser foot of this idea has the following material, shape, structure, and arrangement of components. It is not specific to the structure of. The presser foot of this invention can be modified in various ways within the scope of claims for utility model registration.

Further, in this specification, in order to make it easy to understand the scope of claims for utility model registration, the numbers corresponding to the members shown in the embodiments are referred to as "scope of claims for utility model registration" and "to solve the problems." It is added to the members shown in the column of "means for performing". However, the members shown in the scope of the utility model registration request are not limited to the members of the embodiment.

A presser foot 1 of a lock sewing machine using the fastener shown in FIG. 1 is composed of a shank 2 and a presser 4. The presser foot 1 is for a lock sewing machine that uses two needles, as shown by the chain line in FIGS. 1 and 2.

The shank 2 connects the presser foot 4 to the presser bar 3. The shank 2 includes a connecting portion 8 that is connected to the lower end of the presser bar 3 and an arm 9 that connects the presser 4.

The connecting portion 8 has a groove into which the lower end of the presser bar 3 can be fitted, and a U-shaped slit 10 into which a screw is inserted is opened at the bottom of the groove. The connecting portion 8 is connected to the arm 9 with a slight inclination in order to horizontally connect the arm 9 to the lower end of the presser bar 3 which is arranged with a slight inclination.

The arm 9 connects the feeding side of the presser foot 4. Therefore, the arm 9 extends horizontally from the connecting portion 8 toward the feeding side. On the lower end of the arm 9 is provided a rotating plate 11 connected to the presser foot 4. The rotating plate 11 is provided in parallel with the cloth transfer direction. A rotary hole 12 is opened horizontally in the rotary plate 11. The rotation hole 12 is horizontal and opened horizontally, and the rotation shaft 5 is passed therethrough.

The presser foot 4 is connected to the shank 2 via a rotary shaft 5 so as to be tiltable in a vertical plane including the presser bar 3. As shown in FIG. 2, the presser foot 4 has a connecting groove 13 on the feeding side of the needle drop point 6 and a guide surface 7 for fasteners on its side surface.

A cross section of the connecting groove 13 is shown in FIG. The connecting groove 13 shown in FIG. 2 is inserted here so that the rotating plate 11 of the shank 2 can be rotated. The connection groove 13 is provided so as to extend in the cloth transfer direction and open upward. The width of the connecting groove 13 is designed to be slightly wider than the thickness of the rotating plate 11 provided at the tip of the arm 9 of the shank 2. The width of the connecting groove 13 and the thickness of the rotating plate 11 are designed so that the rotating plate 11 can rotate in the connecting groove 13 with almost no play. Further, the length of the connecting groove 13 is designed to be equal to or wider than the width W of the rotating plate 11. The rotary shaft 5 inserted into the connecting groove 13 of the presser 4 penetrates the rotary hole of the rotary plate 11.

In FIG. 1, the front-rear width (W) of the rotating plate 11 is preferably designed to be 5 to 25 mm 2. The wide rotation plate 11 can be connected without rotating the presser 4 in a horizontal plane. The presser foot 4 should have as little play as possible to rotate in the horizontal plane. With respect to the presser foot 4 which does not rotate in the horizontal plane, the direction of the guide surface 7 does not change, and the fastener can be accurately sewn. Further, the needle drop point 6 and the presser foot 4 are accurately connected without any displacement.

As shown in FIG. 2, the guide surface 7 is sewn to the cloth with the fastener A along the fastener comb A. The guide surface 7 is provided close to the needle drop point 6. The guide surface 7 is arranged in parallel to the feeding direction, as shown in FIG. 1, between the center of the presser bar 3 and the needle drop point 6. In order to dispose the guide surface 7 at this position, the tip portion of the arm 9 of the shank 2 is bent toward the needle drop point 6 and the turning plate 11 is provided at the tip thereof. The distance (D) between the guide surface 7 and the needle drop point 6 determines the distance between the fastener and the sewn portion. The distance between the guide surface 7 and the needle drop point 6 is usually set to 2 to 10 mm, preferably 2 to 8 mm in order to bring the sewn portion closer to the fastener.

A stopper 14 is provided at the rear end of the presser 4 so as to project to the upper surface. The stopper 14 hits the contact surface 16 of the shank and restricts the tip end portion of the presser foot 4 from lowering more than necessary. The height of the stopper 14 is designed so that the rear end of the presser foot 4 does not collide with the looper. Thus, the presser foot 4 having the stopper 14 at the rear end has a feature that it can prevent the looper (not shown) of the lock sewing machine from colliding and being damaged. Further, the shank 2 shown in FIG. 1 has a ridge 15 provided above the rotating plate 11. When the feeding side of the presser foot 4 is raised, the ridges 15 hit the upper surfaces on both sides of the connecting groove 13 to limit the rotation of the presser foot 4. Therefore, the presser foot 1 shown in FIG. 1 has a feature that the forward and backward rotation can be limited to a certain range.

[0017]

[Effect of device]

 The presser foot of the sewing machine for sewing fasteners of the present invention has the feature that the fasteners can be easily and easily sewn in place on the cloth accurately, and that the area close to the fastener can be sewn onto the cloth. is there. It connects the presser foot to the presser bar via fasteners, provides a guide surface for the fastener clip on the side surface of the presser foot, and the guide surface is parallel to the feeding direction and between the needle drop point and the center of the presser bar. The reason is that it is located and the presser foot is connected to the presser bar. The presser foot of this structure realizes the ideal characteristic that the fastener can be sewn in place by a simple operation without requiring skill and that the fastener can be surely sewn to the cloth.

[Brief description of drawings]

FIG. 1 is a perspective view of a presser foot seen from below showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a connecting portion between the shank and the presser foot of the presser foot shown in FIG.

[Explanation of symbols]

1 ... Presser foot 2 ... Shank
3 ... Presser bar 4 ... Presser foot 5 ... Rotating shaft
6 ... Needle drop point 7 ... Guide surface 8 ... Connection part
9 ... Arm 10 ... Slit 11 ... Rotating plate
12 ... Rotating hole 13 ... Connection groove 14 ... Stopper
15 ... convex stripe 16 ... contact surface A ... fastener clip

Claims (1)

[Scope of utility model registration request] 1. A presser foot of a sewing machine for sewing a fastener having the following structure. (A) The presser foot (1) includes a shank (2) attached to the lower end of the presser bar (3) of the sewing machine, and a presser foot (4) connected to the presser bar (3) via the shank (2). Have. (B) The presser foot (4) is rotatably connected to the shank (2) in a vertical plane via the rotary shaft (5). (C) The presser foot (4) is connected to the shank (2) on the feeding side from the needle drop point (6). (D) The side surface of the presser foot (4) has a guide surface (7) along which the side edge of the fastener extends. (E) The guide surface (7) is provided so as to extend in the cloth transfer direction. (F) The guide surface (7) is parallel to the feeding direction and is located between the center of the presser bar (3) and the needle drop point (6).