JPH0535833Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a presser foot for a sewing machine, and more particularly to a presser foot used for sewing a band-like cloth body to the side edge of a workpiece cloth.

[Prior Art] Conventionally, a sewing machine presser foot was developed in 1980 and was used as a sewing machine presser foot suitable for sewing belt-like cloth made of this type of rubber.
A presser foot described in Publication No. 21274 has been proposed. The presser foot is pivotally supported on the lower end of the presser bar, and has a bifurcated front side and a shaft formed integrally with the upper end of the front side. An opening is thus formed. and,
A presser foot piece attached to the presser foot body is biased by a spring to press the strip-shaped cloth body.
In addition, when setting a strip of cloth on the presser foot, lift the presser foot against the spring, insert the strip of cloth through the gap between the presser foot and the shaft, and then press the presser foot into the presser foot. It is designed to be introduced under the presser foot body through the opening. At this time, one inner end surface of the bifurcated front side is used for positioning and guiding the belt-like cloth.

[Problems to be solved by the invention] However, in order to set the strip-like cloth on the presser foot, the presser foot is lifted, the strip-like cloth is inserted through the gap between the presser foot and the shaft, and then the strip-like cloth is placed on the presser foot body. Since the presser foot is introduced under the presser foot body through the opening provided in the presser foot, it is relatively troublesome to set the strip-shaped cloth body. In addition, since the band-like cloth body is positioned and guided by engaging only one side edge thereof with one inner end surface of the forked front side,
There is a problem in that while the belt-like cloth body is being sewn, the belt-like cloth body moves loosely between the two front side portions, and the belt-like cloth body is not sewn along the side edges of the work cloth.

[Purpose of the invention] The present invention was devised to solve the problems of the conventional method, and its purpose is to facilitate the setting of belt-like cloth bodies onto a presser foot, and to facilitate the setting of belt-like cloth bodies of various widths. By guiding both side edges, the belt-like cloth is prevented from moving in the direction perpendicular to the feed direction of the workpiece cloth while sewing the workpiece cloth, and the belt-like cloth is sewn precisely along the side edges of the workpiece cloth. To provide a presser foot for a sewing machine that can sew a body.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention includes a presser foot main body 12 that is attached to the lower end of the presser bar and presses the work cloth W, and A presser foot for a sewing machine that sews a band-like cloth Y to the edge,
In order to allow insertion of the strip-like cloth Y, a hole is formed in the presser foot main body 12 on the feeding side of the work cloth W from the needle drop point, and one side of the presser foot main body 12 is open. a long and narrow opening 24 that extends in a direction intersecting the feeding direction of the work cloth W; and a first opening that is retracted from one side of the opening 24 in order to insert the strip-like cloth body Y into the opening 24 from the side.
and a second position where the open side can be closed and engaged with one side edge of the band-like cloth body Y,
A guide member 30 is rotatably provided on the presser foot main body 12 so that its second position can be adjusted according to the width of the belt-like cloth body Y, and a guide member 30 is provided so that the belt-like cloth body Y is placed in the opening 24. It is arranged along the upper surface of the presser foot main body 12 so as to guide it toward the direction, and presses the strip-like cloth Y against one surface of the presser foot main body 12 on the feeding side of the work cloth W from the needle drop point. a pressing member which is attached to the presser foot body 12 so as to obtain the presser foot body 12 and is further provided with a notch 32 that opens in the same direction as the opening 24 and that is penetrable when the guide member 30 is in the second position; It is equipped with 26.

[Function] In the sewing machine presser foot configured as described above, after the guide member is moved to the first position where it is retracted from the one side where the opening is opened, the strip-shaped cloth body is moved to the first position where the guide member is retracted from the one side that opens the opening. inserted into the opening through the section. In this state, the strip-shaped cloth body is guided toward the opening by the pressing member. When the guide member enters the notch of the pressing member and is moved until it engages with one side edge of the belt-like cloth, the belt-like cloth is moved onto the pressing member by the inner surface of the other side of the opening and the guide member. It is positioned and guided so that it does not move freely.

[Example] An example of the presser foot of the present invention will be described below with reference to the drawings.

In FIG. 1, a presser foot holder 10 is provided at the lower end of a presser bar (not shown) in order to replaceably attach various presser feet, and a presser foot main body 12 is detachably attached to the presser foot holder 10 by a pivot 14. There is. The presser foot body 12 has its front free end 16 inclined upward in order to smoothly feed the work cloth W. Further, in FIG. 2, on the right side of the presser foot body 12, a space for dropping the sewing needle 18 and an operating space for a cutter consisting of a movable blade 20 and a fixed blade 22 are formed.

The presser foot body 12 is provided with an opening 24 for feeding the flat rubber Y to the lower part of the presser foot body 12 on the side where the work cloth W is fed from the fall space of the sewing needle 18 and the operating space of the cutter. ing. The opening 24 is formed to be elongated in a direction perpendicular to the feeding direction of the work cloth W, and one side thereof is open to the outside of the presser foot body 12, and the other side inner surface is formed by one side edge of the flat rubber Y. It is designed to position and guide the flat rubber Y by engaging with the flat rubber Y.

A leaf spring 26 is fixed to the front free end 16 of the presser foot body 12 by a screw 28. The free end of the leaf spring 26 extends into the opening 24, and the flat rubber Y is held between the elongated inner wall of the opening 24. Further, on one side of the leaf spring 26, a guide protrusion 30a of a guide member 30, which will be described later, is provided.
A notch 32 is provided for the passage of the flat rubber Y, and a protrusion 34 is provided on the opposite side thereof for positioning and guiding the flat rubber Y together with the inner surface of the other side of the opening 24.

Further, an adjustment dial 36 is provided between the front free end 16 and the leaf spring 26, and a base end threaded portion 36a of the adjustment dial 36 is screwed into the front free end 16. Then, the free end of the adjustment dial 36 engages with the leaf spring 26, and as the adjustment dial 36 is rotated, the free end of the leaf spring 26 is pressed against the elongated inner wall of the opening 24, and the flat rubber Y is clamped. It is designed to adjust the pressure.

A guide member 30 is rotatably mounted on the presser foot main body 12 by a screw 31, and the guide member 30 presses down the guide protrusion 30a by operating its operating protrusion 30b. Presser foot body 12 from the retracted position from presser foot body 12 (see Fig. 3).
The flat rubber Y
It can be adjusted according to the width of the

Next, a case will be explained in which the presser foot of this embodiment is used to stretch the flat rubber Y and sew it to the workpiece cloth W using a known overlock sewing machine that forms a one-needle, three-thread overlock stitch. do.

First, with the presser foot raised, the worker places the work cloth W on the bed B, operates the operation protrusion 30b to rotate the guide member 30, and moves the guide protrusion 30a to the third position. As shown in the figure, the presser foot body 12
evacuate from. Then, the flat rubber Y is inserted into the opening 24 through one side of the opening 24 that is open to the outside of the presser foot body 12 .

Again, the operator operates the operation protrusion 30b to rotate the guide member 30, causing the guide protrusion 30a to enter the notch 32 of the leaf spring 26, thereby causing the guide protrusion 30a and the leaf spring 26 to be separated. The distance between the protrusion 34 and the protrusion 34 is adjusted. Then, by engaging both side edges of the flat rubber Y with the guide protrusion 30a and the protrusion 24, the flat rubber Y in the direction orthogonal to the feeding direction of the work cloth W is
prevent the movement of Next, the operator rotates the adjustment dial 36 to adjust the free end of the leaf spring 26 and the opening 2.
The clamping pressure of the flat rubber Y by the elongated inner wall of No. 4 is adjusted appropriately. At this time, even if the position of the leaf spring 26 changes slightly due to the adjustment operation, the guide protrusion 3
Since Oa enters into the notch 32, it is possible to stably guide the flat rubber Y.

Then, when the operator lowers the presser foot and operates the sewing machine to perform sewing, the work cloth W is transferred to the left in FIG. 1. At the same time, the flat rubber Y moves the guide protrusion 30a and the protrusion 3 over the leaf spring 26.
4 and is moved to the left without any movement, and then processed through the opening 24 while being stretched appropriately by the free end of the leaf spring 26 and the elongated inner wall of the opening 24. It is overlapped with the cloth W and transported to the left. The work cloth W and the flat rubber Y are guided to the dropping point of the sewing needle 18, and the edge of the work cloth W is trimmed by the cutter, and the flat rubber Y is sewn along the cut edge. be done.

Note that the guide member 30 has a guide protrusion 30a and an operating protrusion 30b integrally formed and is rotatably attached to the presser foot body 12 with a screw 31, so that its structure and assembly are can be created easily and inexpensively.

[Effect of the invention] As is clear from the detailed description above, in the present invention, one end of the opening is formed to be open to the outside of the presser foot body, so that it is possible to easily press the belt-like cloth. It can be inserted into the opening.

Furthermore, as the guide member moves, both edges of the band-like cloth inserted into the opening are engaged with the inner surface of the other side of the opening and the guide member inserted into the notch of the pressing member, thereby causing the pressing force to be reduced. It is possible to stably position and guide the belt-like cloth even when adjusting the pressing force of the member, and when sewing the belt-like cloth, the movement of the belt-like cloth is prevented, and the belt-like cloth can be moved along the side edges of the work cloth. Allows for accurate sewing. Further, since the guide member only needs to be rotated according to the width of the belt-like cloth body, excellent effects such as easy adjustment work according to the width of the belt-like cloth body are achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a left side view showing a state in which a flat rubber is sewn onto a processed cloth using the presser foot of this embodiment; FIG. 3 is a top view of the presser foot in a state where the guide member is rotated to the retracted position. 12...Presser foot body, 24...Opening, 30...
Guide member, 30a...Guiding protrusion, 30b...Operation protrusion, 32...Notch, W...Working cloth, Y...Flat rubber.

Claims (1)

[Claims for Utility Model Registration] 1. A sewing machine for sewing a belt-like cloth body Y on the side edge of the work cloth W, which is equipped with a presser foot body 12 attached to the lower end of the presser foot bar and presses the work cloth W. In the presser foot, a hole is formed in the presser foot main body 12 on the feeding side of the work cloth W from the needle drop point in order to allow insertion of the strip-shaped cloth body Y, and a hole is formed on the side of the presser foot main body 12. An elongated opening 24 whose side is open and extends in a direction intersecting the feed direction of the work cloth W; and an open side of the opening 24 for inserting the strip-like cloth body Y into the opening 24 from the side. It has a first position where it is retracted, and a second position where it can close one open side and engage with one side edge of the belt-like cloth body Y. A guide member 30 is rotatably provided on the presser foot body 12 so that the position can be adjusted according to the width of the presser foot body 12.
and is arranged along the upper surface of the presser foot main body 12 so as to guide the strip-like cloth body Y toward the opening 24, and the work cloth W is placed closer to the needle drop point.
It is attached to the presser foot main body 12 so as to be able to press the strip-like cloth Y against one surface of the presser foot main body 12 on the feeding side of the presser foot main body 12, and further opens in the same direction as the opening 24, and the guide member 30 is Second
When the cutout 32 is located in the position of
A presser foot for a sewing machine, comprising: a pressing member 26 provided with a presser foot. 2. A utility model characterized in that the guide member 30 is configured by integrally forming a guide protrusion 30a for engaging with one side edge of the strip-like cloth body Y and an operable operation protrusion 30b. A presser foot for a sewing machine according to claim 1.