JPS5925350Y2 - Sewing machine presser foot - Google Patents

Description

[Detailed explanation of the idea] Technical field This invention relates to a presser foot for sewing machines.

Purpose The purpose of this invention is to create a regular sewing machine that can guide the processed fabric along the seam using a ruler rod in order to form a seam parallel to the previously formed seam during sewing such as quilting. During sewing, the side edges of the work cloth can be guided in parallel along the cloth feeding direction line by the cloth guide plate on the ruler rod in order to form a seam parallel to the side edges of the work cloth; Similarly, the locking member on the ruler bar can securely hold the fabric guide plate in the working position via the ruler bar, so that the seams can be formed at uniform intervals from the right edge, To provide a novel cloth presser for a sewing machine whose guiding state can be easily selected and set as required.

Embodiment An embodiment embodying this invention will be described below with reference to the drawings. As shown in FIG. The lower end of the presser foot is equipped with a presser foot 3 at the bottom.
is removably attached with screws 4.

When the presser bar 1 is moved down and the cloth presser main body 2 is lowered, the presser foot 3 applies presser pressure to the work cloth K.

As shown in FIGS. 1 and 2, an elastic clamping member 6 made of an elastic synthetic resin material is inserted and fixed in the upper part of the main body 2 of the cloth presser, and a support hole 8 for a ruler rod 7 is inserted through the center of the clamping member 6. At the same time, a slit portion 9 is formed continuously to the support hole 8 .

As shown in FIG. 2, the lower inner surface of the support hole 8 has an inclined portion 10 that slopes from near the left opening of the support hole 8 toward the right opening, and extends continuously from the inclined portion 10 to the right opening. A flat portion 11 is formed respectively.

The shaft portion 12 of the ruler rod 7 inserted into and supported by the support hole 8 of the elastic clamping member 6 is formed with a pair of mutually parallel flat surfaces 13a and 13b extending in the longitudinal direction. A guide portion 14 is bent and extends at an angle of approximately 90 degrees with respect to the flat surfaces 13a and 13b.

A pair of flat surfaces 13 a, 13 of the shaft portion 12
b is the flat part 11 and the slit part 9 of the elastic clamping member 6;
The ruler rod 7 can be moved and adjusted in the longitudinal direction against the clamping force while the shaft portion 12 is clamped by the elastic clamping members 6 and in contact with the inner surfaces of the elastic clamping members 6. The guide portion 1 of the ruler rod 7 at the adjusted position of
4 is moved up and down against the elasticity of the elastic holding member 6 within a range regulated by the inclined portion 10 and the inner wall of the slit portion 9.

Furthermore, within the support hole 8 of the elastic clamping member 6, the shaft portion 12 of the ruler rod 7 can rotate against the clamping force of the elastic clamping member 6, and the main body of the cloth presser In the raised position, the ruler rod 7 is rotated, and one flat surface 13a of the shaft portion 12 is brought into contact with the flat portion 1 of the elastic clamping member 6.
1, the guide portion 14 is placed in a non-active position away from the work cloth K, as shown by the solid line in FIG.

Further, when the ruler rod 7 is rotated 180 degrees from this state and the other flat surface 13b of the shaft portion 12 comes into contact with the flat portion 11 of the elastic clamping member 6, the case is shown by the chain line in FIG. By lowering the cloth presser main body 2 while being held in the working position, the guide portion 14 comes into contact with the upper surface of the workpiece cloth.

As shown in FIGS. 1 and 4, the cloth presser main body 2 and the ruler rod 7
between the force 41 and the end 12 of the ruler rod 7
A cloth guide plate 15 formed by bending a thin metal plate is attached to the cloth guide plate 15, and the cloth guide plate 15 has a clamping part 16 and a cloth guide part 17.
and a connecting portion 18 that connects both portions 16 and 17.

The holding portion 16 is formed with a bent top portion 19 having a length that is approximately the same as the maximum diameter of the shaft portion 12 of the ruler bar 7, and a portion of the cloth guide plate 15 is cut out so as to face the bent top portion 19. The clamping pieces 20 are pressed against one flat surface 13a of the shaft part 12 by their own spring force, and the bent top part 19 is pressed against the other flat surface 13a of the shaft part 12. The cloth guide plate 15 is in close contact with the flat surface 13b, and the cloth guide plate 15 is attached to the shaft portion 12.
is attached for adjustable movement in the axial direction.

When the cloth presser main body 2 is lowered with the guide portion 14 of the ruler bar 7 disposed in the inactive position shown by the solid line in FIG. The cloth edge guide part 17 is held at an operating position where it is almost in contact with the upper surface of the bed of the sewing machine, and by appropriately moving and adjusting the cloth guide plate 15 in the axial direction at this operating position, the cloth edge guide part 17 is
The interval between the needle drop point and the needle drop point can be set arbitrarily.

As shown in FIGS. 1 and 3, a locking member 21 is fitted into the tip of the shaft portion 12 of the ruler rod 7 on the left side of the cloth presser main body 2 so as to be movable in the axial direction. A wedge-shaped retaining protrusion 21a is formed to protrude.

Then, as shown by the solid line in FIG.
4 is placed in the inactive position and the cloth edge guide portion 17 of the cloth guide plate 15 is placed in the working position, the locking member 21 is moved in the axial direction as shown by the chain line in FIG. the engagement protrusion 21a to one flat surface 1 of the shaft portion 12.
By being inserted between the ruler bar 3a and the inclined portion 10 of the elastic clamping member 6, rotation of the ruler bar 7 is prevented.

Next, the operation of the cloth presser constructed as shown in the figure will be explained with reference to the drawings.

Now, when performing quilting sewing work using a thick work cloth K that tends to have uneven surfaces, when forming a new seam parallel to the previously formed seam, the cloth presser main body 2 When the guide portion 14 of the ruler rod 7 is placed in the operating position as shown by the chain line in FIG. 17
is placed in an inactive position.

After that, by adjusting the movement of the ruler rod 7 in the axial direction,
The guide portion 14 is placed on the seam previously formed in the work cloth.

In this state, lower the cloth presser main body 2 and operate the sewing machine, and feed the work cloth K so that the previously formed seam is directly under the guide part 14, so that it is parallel to the seam ahead. New seams can be formed.

Furthermore, even if the surface of the workpiece cloth is uneven, the guide section 14 is moved up and down following the unevenness, which may impede the feeding operation of the workpiece cloth or cause wrinkles on the workpiece cloth K. You can perform sewing without having to worry about it.

Note that during this sewing process, the cloth guide plate 15 is placed in an upper inactive position as shown by the chain line in FIG. 1, so there is no risk of interfering with the sewing work.

Next, when forming stitches parallel to the side edges of the work cloth during normal sewing, etc., the ruler bar 7 is rotated with the cloth presser main body 2 raised. When the guide portion 14 of the ruler rod 7 is placed in the upper inactive position as shown by the solid line in FIG. is opposed to the inclined portion 10 of the elastic clamping member 6.

Thereafter, by inserting the engaging protrusion 21 a of the locking member 21 between the inclined portion 10 and one flat surface 13 a of the shaft portion 12, rotation of the ruler bar 7 is prevented. .

In this state, after adjusting the movement of the cloth guide plate 15 in the axial direction and arranging the cloth edge guide part 17 on the side edge of the work cloth, the cloth presser body 2 is lowered, and the cloth edge guide part 17 is arranged at a position substantially touching the work cloth K along the side edge of the work cloth.

Then, by operating the sewing machine in this state and feeding the work cloth K so that the side edge of the work cloth comes into contact with the cloth edge guide part 17 of the cloth guide plate 15, the work cloth K is moved along the side edge of the work cloth. Seams can be formed.

Note that this invention is not limited to the above-mentioned embodiments; for example, the locking member may be connected to the cloth presser main body or the cloth guide plate with a string or the like to prevent the locking member from being lost. It is also possible to arbitrarily change the configuration of each part without departing from the spirit of the invention.

Effects As detailed above, this invention has an elastic clamping member attached to the main body of the cloth presser, and by the action of the elastic clamping member, the ruler bar is supported by its shaft portion so that it can be moved in the axial direction, and the ruler bar is a guide portion is attached so as to be rotatable between two positions, an active position and a non-active position, and a cloth guide plate having a cloth edge guide portion is attached to the shaft portion so as to be movable in the axial direction;
A locking member that can be inserted between the ruler rod and the elastic clamping member is attached to the shaft portion so as to be movable in the axial direction when the cloth guide plate is rotated to a position where it can guide the edge of the processed cloth. As a result, during sewing such as quilting, the work cloth can be guided along the seam by the ruler rod in order to form a seam parallel to the previously formed seam, and during normal sewing, In order to form a seam parallel to the side edge of the workpiece cloth, the side edge of the workpiece cloth can be guided parallel to the cloth feed direction line by the cloth guide plate, and the ruler rod can be guided by the locking member. The fabric guide plate can be reliably held in the working position through the fabric guide plate, and stitches can be formed at uniform intervals from the right edge, and the guide state of these plates can be easily selected and set as necessary. It has the excellent effect of being able to

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is an enlarged sectional view taken at 2-2 in Fig. 1, and Fig. 3 is an enlarged sectional view taken at 2-2 in Fig. 1.
FIG. 4 is an enlarged sectional view taken along line 4--4 in FIG. 1. Cloth presser body...2, elastic clamping member...6, ruler bar...7, shaft...12, flat surface...13a, 13
b. Guide part...14, cloth guide plate...15, clamping part...16, cloth edge guide part...17, locking member...2
1. Processed cloth...K.

Claims (1)

[Claims for Utility Model Registration] Approximately 90 mm at one end of the shaft portion 12 extending in the longitudinal direction
A ruler rod 7 consisting of a guide portion 14 formed by bending several times.
can be adjusted to move in the axial direction by the action of an elastic clamping member 6 attached to the cloth presser body 2, and the guide portion 14 has an operating position in contact with the work cloth and a position away from the work cloth K. In the cloth presser, which is rotatably mounted between two positions, such as a working position and a working position, when the ruler bar 7 is held in a state where its guide portion 14 is in the non-working position, the edge of the opening cloth is held. A cloth guide plate 15 equipped with a cloth edge guide part 17 that comes in contact with and guides the transfer of the work cloth.
is attached to the shaft portion 12 so as to be adjustable in its axial direction, and when the ruler rod 7 is rotated to a position where the cloth guide plate 15 can guide the edge of the processed cloth, the ruler rod 7 and the elastic clamping member A locking member 21 that can be inserted between the shaft portion 1 and the shaft portion 1
2. A cloth presser for a sewing machine, characterized in that the presser foot is movable in the axial direction of the presser.