JPS622997A - Presser in blind stitch sewing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention is an improvement regarding a presser used for blind stitching the edges of a folded cloth using a sewing machine.

(Prior Art) A blind stitch sewing presser is composed of a presser foot and a guide plate also called a ruler body. A bracket c with a hook at the tip is protruded from the lower part of the side wall of metal a, and a screw rod d is planted above it, and a hook is attached at the tip in the hollow chamber of the guide plate e made of synthetic resin. Form an elastic tongue f, screw the nut n held by the guide plate e onto the screw d, and push the guide plate e along the screw d toward the presser foot a while rotating the nut n (Fig. 8). As shown in C, the hook of the elastic tongue f was engaged with the hook of the blanket C to connect the guide plate e to the presser foot a.

(Problem to be Solved by the Invention) In this way, in the past, the threaded rod d on the side of the presser foot a was inserted into the guide plate e that held the nut n, and the nut n was rotated many times to tighten both a and e. Since it has to be connected, there are many j5t
The fatigue of the fingertips is 1.1 ゛, and the efficiency is 1.
-There was a drawback that it did not.

An object of the present invention is to connect the guide plate e to the presser foot a with one touch by simply inserting the screw rod Qi into the blade plate e without turning the nut n.

(Means for Solving the Problems) and (Operations) The present invention will be described with reference to the embodiments shown in FIGS. 1 to 6. One side wall of the presser foot a is provided with a protruding wall 1, A protruding strip 3 having a hook 2 at the tip is provided along the bottom of the protruding wall 1, and a guide rod 5 having a screw 4 cut therein is provided protruding from the outer end of the protruding wall 1. The tip of the guide rod 5 has a threadless portion 6 in which no screw is provided.

A hollow chamber into which the guide rod d and the protruding wall 1 are inserted is formed in the base 7 of the guide plate e made of synthetic resin, and an elastic tongue piece 9 having a hook 8 at the tip is provided on one side of the inside of the bottom.

A number l□n is sandwiched between the base 7 and the protruding piece 10 facing thereto. However, Nara in and Otsuki 1
Insert the threadless portion 6 at the tip of the Oij guide cup 5 (see Figure 3). Next, press the part 7 of the kite board e toward the protruding wall 1, and push the hook 8 at the tip of the part 9 against the elastic force of the previous month 9 while holding the protruding ridge 3 against I7. Climb over hook 2 (see Figure 4) and engage hook 2 and hook 8 (see Figure 5).

In this way, insert guide plates e, lJ (section 7 into oak 1,
Outer end 1 of protruding wall 1 of presser foot a together with n:i! By simply pushing the guide rod 5 into the threadless portion 6 of the guide rod 5 protruding from the guide rod 5 in the direction of the presser foot a, the bullet on the side of the chi F plate e will be attached to the hook 2 of the protrusion 3 on the side of the presser foot a. When the hook 8 of the M-shaped piece 9 is engaged, the tip of the protrusion 1ψ1 is inserted into the hollow chamber of the base 7, and the guide plate e is connected without being pushed by the presser foot a.

Next, while sliding the screwless part 6 of the guide bar 5 along with the base 7 of the guide plate e, advance the Nando n towards the presser foot a by pushing I7, and the screw 11j of the Nando b n is the starting end of the screw f-4 of the guide bar 5. When the guide plate e is brought into contact with the folded part of /IJ by turning the oak tree t-n, the guide plate e can be appropriately brought into contact with the folded part of /IJ (see FIG. 2, jj(j)).

(Example) A preferred embodiment of the present invention shown in the drawings will be described.
A protruding wall 1 for inserting the guide plate into the hollow chamber of the guide plate e on one side wall of the presser foot a on which the pin p is installed.
A guide rod 5 with a screw 4 cut therein is formed integrally with the presser foot a from zinc alloy or synthetic resin. Incidentally, on the bottom side of the protruding wall 1, a protrusion 3 having a hook 2 at its tip is provided integrally with the protruding wall 1. As shown in FIG. 6, the tip of the guide rod 5 has a non-threaded portion 6 in which no screw 4 is provided. The base 7 of the guide plate e made of synthetic resin is provided with a hollow chamber into which the guide rod 5 and the protruding wall 1 are inserted to prevent the guide plate e from rotating around the guide rod 5. As shown in the opening of FIG. 3, an elastic tongue piece 9 having a hook 8 at the tip is provided on one side of the tongue piece 9, and faces the protrusion 3 provided on the bottom surface of the protruding wall l.

At the center of the through hole of the nut n held between the part 7 and the protruding piece 10 opposite thereto, there is a single thread 1 in the shape of a 1'' circular arc.
1, the tip of the screw 4 of the guide rod 5 shown in FIG.
It is preferable that the thread 11 extends into the lower threadless portion 6a of the threaded groove 4a on the half circumference.

In this way, the oak l-n is held between the base 7 and the large moon 10 of the guide plate e, and the threadless portion 6 at the tip of the guide rod 5 is inserted into the f-n and the protrusion 10, and the base 7 protruding wall l
When I pushed forward, the bullet +! I tongue") 9's hook 8 is protrusion 3
The hooks 2 and 8 are engaged after passing over the hooks 2, and the tip of the protruding wall 1 is inserted into the hollow chamber of the base 7. At the same time, the single screw thread 11 in the shape of a semicircular arc of l-n serves as a guide rod. 5 reaches the lower surface non-threaded portion 6a of the threaded groove 4a on the half circumference.

Therefore, if the nut n is turned, the nut n will be quickly screwed into the screw 4, which is convenient.

To do this, mark the LI mark on the opposite surface of the thread 11 of the nut n, and place the nut n between the base 7 and the protrusion 10 of the guide plate e with this mark 1 facing +. .

In addition, as shown in FIG. 3(a), the length L of the inside of the hook 8 of the elastic tongue piece is equal to If the length from the inside of the hook 2 of the protrusion 3 of the wall 1 to the starting end of the screw 4 of the guide rod 5 is made larger, the base 7 of the guide plate e can be guided to the presser foot a by simply pushing it into the guide rod 5. Plate e can be connected.

The Nyl-n is made of a deformable material such as zinc alloy or synthetic resin, and a semicircular arc-shaped protrusion 11 is formed inside the through hole in one step using a mold or press. Since the protrusions 11 are deformable, they are easily distorted and screwed into the screw 4 having any thread spacing.

(Effects of the Invention) In the present invention, a screwless portion at the tip of some of the guide rods 5 is inserted between the base 7 of the guide plate e and the protruding piece 10, and the outer end of the protruding wall 1 of the presser foot a. 6 into the nut n and the protrusion 10, the hook 8 of the elastic tongue piece 9 on the guide plate e side engages with the hook 2 of the protrusion 3 on the bottom surface of the protrusion wall 1 on the presser foot a side, as in the conventional case. The two ae are quickly connected without being separated even without turning the nuts l and n, and at that time the outer end of the protruding wall 1 is inserted into the hollow chamber of the base 7, so the nut n can be turned and the guide plate Even if the presser foot e is moved forward toward the presser foot a, the guide plate e does not have to worry about turning around the guide rod 5.

[Brief explanation of the drawing]

Figures 1 to 6 show embodiments of the present invention; Figure 1 is an exploded perspective view, Figure 2 is a perspective view showing a usage example, and Figures 3 to 5 are views of the base of the guide plate. These are drawings showing the state in which it is connected to a protruding gold wall, in which (a) is a partially vertical front view, and (b) is a bottom view of (a). FIG. 6 is a front view showing the tip of the guide rod. Figure 7 is an exploded perspective view of the conventional product, and Figure 8 is a partially vertical front view showing the state in which the base of the guide plate of the conventional product is connected to the presser foot in the order of (A), (B), and (C). . (2) is a projecting wall, 2.8 is a hook, 3 is a protrusion, 4 is a screw, 5 is a guide rod, 6 is a threadless portion, 7 is a base, 9 is an elastic tongue piece, and 10 is a protrusion piece. Agent Maki Tobe (and 2 others) Figure 5 Figure 6 Figure 11 Kaisho 62-2997 (5) Figure 7 (a) 1 million total is huge. . 1' Tatami Takashi - (ha) b, ! A Nigure # Go! 6

Claims (1)

[Claims] A protrusion (3) having a hook (2) at the tip is provided along the bottom surface of a protrusion wall (1) provided on one side wall b of the presser foot a, and a screw is provided at the upper outer end of the protrusion wall. A guide rod (5) carved with (4) is provided protrudingly, and the tip thereof is equipped with a screwless part (6), and the base (7) of the guide plate e made of synthetic resin is provided with a guide rod (5) and a screwless part (6). A hollow chamber is formed into which the protruding wall (1) is inserted, and an elastic tongue (9) having a hook (8) at the tip is provided on one side of the inside of the bottom surface of the hollow chamber, and the base (7) and the protrusion opposite thereto are provided. pieces (10)
Holding the nut n in between, insert the threadless part (6) at the tip of the guide rod (5) into the nut n and the protrusion (10), and insert the hook (8) at the tip of the elastic tongue piece (9) into the protrusion. (3) The hook at the tip (2
) is engaged with a stitch sewing presser.