JP2535039Y2 - 2-needle sewing machine presser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an improvement of a presser foot in a two-needle sewing machine that performs double outer stitch sewing simultaneously with two needles.

(Conventional technology and its problems) As shown in FIG. 8, after the two fabrics (A) and (B) are sewn (11), the folded portions of the two fabrics (A) and (B) are simultaneously cut. In some cases, double outer stitch sewing is performed by a sewing machine having two needles. In the figure, (12) and (13) are the double outer stitch seams, and (11a) is the fabric (A)
The joint at (B) is shown.

This double outer stitch sewing is performed using the seam (1
2) In order to prevent (13) from meandering, the worker feeds and sews the fabrics (A) and (B) while visually balancing the fabrics (A) and (B) with both left and right hands.

However, this operation requires not only skill but also re-sewing cannot be performed when the fabrics (A) and (B) are leather, so that the operation requires caution and the productivity is extremely poor.

Therefore, an object of the present invention is to provide a sewing machine that can perform double outer stitch sewing easily and quickly even for a beginner without requiring any skill in work.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pair of left and right holding bodies each having a needle insertion hole, and is pivotally mounted between the left and right holding bodies. And a movable guide piece urged downward by the elastic force of the spring.

The above movable guide pieces are projected in a V-shape below the bottom surface of the presser body and in a V-shape forward of the tip of the presser body, respectively. To bite into.

Therefore, since the cloth is guided by the movable guide piece at the joint, the cloth fed into the left and right holding bodies does not meander.

The movable guide piece is urged downward by the elastic force of the spring. Therefore, even when the presser body jumps above the fabric surface, the presser body is always joined to the fabric, so that the double outer stitch sewing does not meander.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, (1) shows a presser (1) according to the present invention, and this presser (1) has a pair of right and left presser bodies (2) and (3) as shown in FIG. And (3) a movable guide piece (4) which is pivotally mounted between pins (41) by a pin (41) (FIG. 3) and is urged downward by the elastic force of a leaf spring (5). I have.

As shown in FIG. 2, the presser body (2) (3)
Needle insertion holes (21) and (31) are opened in the vertical direction, and the sewing needles (6) and (6) are inserted. The presser bodies (2) and (3) are integrally formed in a bifurcated manner from the base (1b), and the presser (1) is fixed to the shaft (8) side of the sewing machine by the mounting portion (1b).

The above movable guide piece (4) is projected downward in a V-shape with respect to the bottom surface of the holding body (2) (3) and V-shaped forward with respect to the tip of the holding body (2) (3). Forming
It is designed to bite into the seam (11a) of the dough (A) (B) prior to the presser body (2) (3). In the drawing, (42) indicates the lower end of the movable guide piece (4), and (43) indicates the same tip.

The front side of the movable guide piece (4) is urged toward the lower joint (11a) by the elastic force of the leaf spring (5) (FIG. 4). Therefore, as shown in FIG. 6, the left and right presser bodies (2) and (3) are made of the fabrics (A) and (B).
The movable guide piece (4) is always joined to the fabrics (A) and (B) even when not joined.

The upper part of the leaf spring (5) is fastened to the base (1a) by a fastening member (51) such as a screw, and the lower end is joined to the upper surface of the movable guide piece (4) to press the movable guide piece (4) downward. ing.

In the drawing, (7) indicates a needle plate, and (71), (71)... Indicate feed dogs.

Thus, as shown in FIG. 7, two cloths (A) and (B) are sewn (11) in advance, and both cloths (A)
After folding both ends of (B) inward, the fabrics (A) and (B) are placed on the sliding board of the sewing machine, and the joint (11)
When the sewing machine is driven by setting the movable guide piece (4) to bite into a), the fabrics (A) and (B) are fed by the feed dog while being guided by the movable guide piece (4). Therefore, along the joint (11a) between the needle insertion holes (21) and (31) of the left and right holding bodies (2) and (3), the folded portions of both ends in both fabrics (A) and (B) are Double outer stitch sewing as shown in Fig. 8 (12)
(13) is done.

(Effect) As described above, in the present invention, a movable guide piece is pivotally mounted between a pair of right and left presser bodies and urged downward by the elastic force of a spring. In contrast, since the protrusion protrudes downward in a V-shape and protrudes in a V-shape with respect to the tip of the presser main body, the seam of the cloth is guided by the movable guide piece before the cloth is fed into the presser main body. . Accordingly, the fabric is fed along the seam by the movable guide piece and is sewn with double outer stitches. Therefore, even a beginner can easily and quickly perform double outer stitch sewing, thereby improving workability.

[Brief description of the drawings]

Fig. 1 is a perspective view of the product of the present invention, and Fig. 2 is II-I in Fig. 1.
Fig. 3 is a sectional view taken along the line III-III, Fig. 3 is a sectional view taken along the line IV.
FIG. 5 is a cutaway perspective view showing the state of attachment to the sewing machine, FIG. 6 is a side view of the used state, FIG. 7 is a sectional view illustrating the state of double outer stitch sewing, FIG.
The figure is a perspective view of a double outer stitched fabric. In the figure, (2) and (3) show the presser main body, and (4) shows the movable guide piece, respectively.

Claims (1)

(57) [Scope of request for utility model registration] 1. A presser for a two-needle sewing machine for performing double outer stitch sewing simultaneously on folded portions of two fabrics after seaming two fabrics, a pair of left and right presser main bodies each having a needle insertion hole, A movable guide piece that bites into a joint between the two doughs, the movable guide piece is pivotally mounted between the left and right pressing bodies and is urged downward by the elastic force of a spring, and A two-needle sewing machine presser which projects downward in a V-shape with respect to the bottom surface and forwardly in a V-shape with respect to the tip of the presser body.