JPH0331258Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a fabric in which a guide member that guides the fabric in a predetermined folded state to the sewing machine seam can be retracted from the fabric guide position to an unnecessary position. This invention relates to a guide device.

[Prior Art] Conventionally, this type of device has been implemented as shown in Japanese Utility Model Publication No. 1899/1983.

FIGS. 6 to 9 are diagrams showing the cloth guide device of this conventional sewing machine.

In the figure, reference numeral 1 denotes a lower support body, which has a groove 2 cut out in the left center part so as to open toward the left end, a bearing 3 protruding oppositely from the upper left end, and a long hole 4 in the left-right direction in the center part. form. Reference numeral 5 denotes an upper support body, which has a bearing 6 that is cut out on both sides on the left side and projects upward from the left end, and a long hole 7 in the left and right direction in the center, and two holes in the left and right direction provided on the right side. It is fixed to the lower support body 1 by screws 9 passing through two stepped elongated holes 8 and screwed into the lower support body 1 so as to be movable and adjustable in the left and right direction. These upper and lower supports 1 and 5
The elongated holes 4 and 7 are overlapped so that they match vertically, and the vertical support is adjusted to move in the left-right direction using a screw 10 that passes through the elongated holes and is screwed into the support 17 fixed to the machine frame. Provided so that it can be fixed in place. Reference numeral 11 designates an engaging body that is loosely fitted into a groove 12 of the lower support body 1 and rotatably supported on a shaft 12 that is fixedly supported by a bearing 3, with an engaging portion 13 that projects upward and a support that projects horizontally. 14.
15 is a U-shaped hem guide (cloth guide member) with a horizontal cross section as shown in FIG. As shown in the figure, a long hole 16 in the left and right direction is formed inside the U-shape of the hem guide 15. Reference numeral 18 denotes a folding guide that defines the fabric folding width, and is loosely fitted inside the U-shape of the hemming guide 15 so as to be movable in the left and right direction, and as shown in FIG. A protrusion 19 is formed on both sides of the upper surface to prevent it from moving in the left-right direction in FIG. The bottom end surface of the stepped screw 21 screwed together allows the hemming guide 1 to be
5 so that it can be moved and fixed at an appropriate position in the left and right direction. Reference numeral 22 denotes a rotating body that constitutes a part of the locking body 23, and the bearing 6 of the upper support body 5 is loosely fitted in the forked part of the base, and rotated with respect to the bearing 6 by the shaft 24 fixedly supported on the base. In addition to being freely supported, a notch 25 facing the tip of the engaging portion 13 of the engaging body 11 is formed on the lower surface of the center. 26 is a locking body 23
Its base is caulked and fixed to the lower surface of the tip of the rotary body 22 with a caulking pin, and its tip is bent downward and then horizontally to be attached to the hemming guide 15. An operating section 27 is formed by extending parallel to the upper surface and bending its left protruding end obliquely upward, and the end surface guide 1 is inserted into a long hole 28 in the left and right direction formed in the horizontal part of the operating section 27.
The shaft portion of the step screw 21 to which the screw 8 is fixed is loosely fitted through the shaft portion.
Reference numeral 29 denotes a spring (biasing member) inserted through the shoulder screw 21, and its both ends are pressed against the head of the shoulder screw 21 and the upper surface of the operating body 26, and the spring 29 is pressed against the washer 20. There is. Reference numeral 30 denotes an edge guide that defines the edge of the seam portion of the cloth, and is rotatably supported by the support base 17 around a screw 32, and the support base 17 and the defined edge 33 that defines the fabric edge are supported rotatably around a screw 32. A stopper 35 is formed opposite to the tip of the screw 34 provided in the.

The operation will be explained based on the above configuration.

During use, the hem guide 15 is held horizontally, with the right end surface of the hem guide 15 abutting the left end surface of the lower support 1, as shown by the solid line in FIG.
In this state, the fabric enters from the left side of the lower surface of the hemming guide 15, bends approximately 360 degrees to the left by the free end of the hemming guide 15, enters the U-shaped interior, and then bends to the right by the end surface of the folding guide 18. The fabric is bent approximately 360 degrees in the direction to create a flat S-shaped shape and is guided to the sewing machine sewing section, where the right edge of the folded fabric is hemmed. During the stitching, when the thick overlapped portion of the fabric passes between the lower surface of the hem guide 15 and the upper surface of the throat plate, an upward force is applied to the hem guide 15 and the hem guide 15 is moved around the shaft 12. A clockwise rotation moment acts, but in this state, the engaging body 1
Since the engaging portion 13 of the hem 1 is engaged with the notch 25, rotation of the hem guide 15 is prevented, and the sewing is performed while being reliably maintained at the position shown by the solid line in FIG.

Further, in order to take out and attach the cloth W to the hem guide 15, the hem guide 15 is moved to the third position.
In order to move to the position indicated by the dotted line in the figure, first lift the operating section 27 upward against the spring 29, and move the locking body 23 around the shaft 4 to the position indicated by the two-dot chain line in FIG. Rotate to release the engaged state between the engaging portion 13 of the engaging body 11 and the notch 25 of the rotating body 22.
Then, when the operating unit 27 is further lifted upward, the spring 29 is further compressed, and the operating unit 26 is further compressed.
At the same time, the step screw 21 is lifted, and as a result, the hem guide 15 rotates around the shaft 12 and moves to the non-use position.
That is, it moves to the position shown by the broken line in FIG.

Contrary to the above, in order to bring the hemming guide 15 from the unused position shown by broken lines in FIG. Holding the folded part of the fabric with both hands, insert the center part into the U-shaped inside of the hemming guide 15, which is indicated by the broken line, and then rotate the hemming guide 15 counterclockwise. Move the cloth to the left as shown. As a result, the hemming guide 15 and the locking body 23 rotate due to the tension of the cloth, and when their centers of gravity shift toward the use position beyond their respective rotation centers, they rotate counterclockwise due to their own weight. The operating position is reached as shown by the solid line, and the engaging portion 13 of the engaging body 11 and the notch 25 of the rotating body 22 engage as shown by the solid line in Figure 3, and the hemming guide 15 is securely locked in the position shown by the solid line be done.

[Problems to be solved by the invention] As mentioned above, in the conventional device, the spring 2
9 presses the locking body 23 against the hemming guide 15 and prevents the locking body 23 from rotating due to vibrations during sewing. Although it is possible to prevent the engaged state from being released, on the other hand, the hemming guide 15
When the locking body 23 is rotated from the non-use position to the use position, the pressing force of the spring 29 causes the ninth
As shown in the figure, the engaging body 13 of the engaging body 11 came into contact with the right side of the notch 25 of the rotating body 22, and the hemming guide 15 was locked before reaching the use position. Therefore, the operator uses one hand to pull apart the locking body 23 and hemming guide 15 against the pressing force of the spring 29, and while releasing the contact state, move both members 15, 23 to the use position. There was a problem in that it had to be rotated, making it difficult to work smoothly and resulting in a decrease in productivity.

Further, there was a problem in that hemming work was performed without the hemming guide 15 being in the use position, resulting in unsewn stitches and other problems, resulting in product defects.

This invention was made in view of the above-mentioned problem, and aims to provide a cloth guiding device that can smoothly move a guiding member from a non-use position to a use position in one motion.

[Means for solving the problem] This invention provides a cloth guide member that guides the cloth so as to be rotatable from a use position to a non-use position, and
A locking piece is provided that engages with an engaging portion provided on the guide member when the guide member is in the use position, and prevents the cloth guide member from rotating to the non-use position. The operating body can be rotated in the same direction as the operating body rotates toward the non-use position, and is always biased toward the use position by a desired elastic member.

[Function] In this invention, after setting the cloth, when the cloth guide member is rotated together with the operating body from the non-use position to the use position, the locking piece is also rotated by the elastic member toward the use position and reaches the use position. The engaging part contacts the locking part that was previously rotating together with the cloth guide member, but the engaging part reaches the use position while pushing the locking piece back toward the non-use position, and the contact with the locking piece is released. At the same time, the locking piece is rotated again to the use position by the elastic force of the elastic member and engages with the locking portion.

[Example of the invention] Hereinafter, an example of this invention will be shown in Figures 1 to 5.
This will be explained based on the diagram. In each figure, the same or corresponding parts as in the conventional example are given the same reference numerals, and detailed explanation thereof will be omitted.

In the figure, reference numeral 40 denotes a rotating body formed with a notch 41, the right end of which is connected to the bearing part 5 of the upper support body 5.
It is rotatably supported on a shaft 5b supported by a. Further, an operating body 2 is provided at the left end of the rotating body 40.
6 is fixed by screws 42 and caulking pins 43. Reference numeral 45 designates a locking piece whose right end portion is rotatably supported by the shaft 5b. This locking piece 4
5 is a locking portion 46 that can be fitted into the notch 41;
It consists of a stopper part 47 that comes into contact with the upper surface of the rotating body 40, and in a state where the stopper part 47 comes into contact with the upper surface of the rotating body 40, the locking part 46 is fitted into the notch 41 so that a part of the locking part 46 It projects downward from the lower surface of the rotating body 40.

Note that the locking piece 45, the rotating body 40, and the operating body 26 constitute a locking body. Further, 48 is a bent line spring (elastic member) whose one end is fixed to the upper surface of the right end portion of the rotating body 40 by the screw 42, and the other end 48a is pressed against the upper surface of the stopper portion 47 of the locking piece 45. The locking body is always pressed downward by the spring 48. Note that the other configurations are the same as those of the conventional example.

In the fabric guide device having the above configuration, when setting the fabric on the hemming guide 15 as a guide member, first, the operation section 27 is set as in the conventional example.
(see FIG. 8) is lifted upward, and the operating body 26 and hemming guide 15 are rotated clockwise around the shafts 5b and 12, respectively, and set to the positions shown by the broken lines in FIG. 7. At this time, since the stopper portion 47 of the locking piece 45 is in contact with the upper surface of the rotating body 40, the locking piece 45 also rotates counterclockwise together with the rotating body 40. After this, fold the cloth into a predetermined state and hem the hem guide 1.
5, and move the cloth to the left while holding it with both hands so that it does not slip. As a result, the hemming guide 15, rotating body 40, and operating body 26 are pulled by the cloth and rotated counterclockwise, and the locking piece 45 is pushed by the spring 48 provided on the rotating body 40.
also rotates counterclockwise. And each member 15, 4
0 and 45 rotate counterclockwise due to their own weight when their centers of gravity exceed their respective rotation centers and deviate toward the use position. During this rotation, the operating body 26
The hemming guide 15 is moved by the spring 29 shown in FIG.
Since the hem-pulling guide 15 reaches the use position, the engaging portion 46 of the engaging body comes into contact with the lower surface of the locking piece 45 protruding from the notch 41 (see Fig. 3). ). At this time, the locking piece 45 is
Although it is pressed downward by the spring 48, this pressing force is set to be smaller than the rotational moment acting on the engaging portion 46 of the engaging body due to the weight of the hemming guide 15. The joint 46 is the fifth
As shown in the figure, while the locking piece 45 is rotated clockwise, it is rotated counterclockwise together with the rotating body 40 and the operating body 26 to reach the use position. Also, at the same time as the hem pulling guide 15 reaches the use position, the locking piece 4
5 falls off from the engaging portion 46 of the engaging body, rotates clockwise due to the pressing force of the spring 41, and projects downward from the notch 41. As a result, the rear surface of the engaging portion comes into contact with the distal end surface of the locking piece 45, and the hemming guide 15 is reliably held in the use position. As described above, in this embodiment, the hemming guide 15 smoothly moves to the use position without stopping midway, so the operator can perform one movement without touching the hemming guide 15 at all after setting the fabric. Since it can be moved to the position of use, smooth work can be carried out.

In the above embodiment, a linear spring 41 is used for pressing the locking piece 45, but a plate spring may be used instead.

[Effects of the invention] As explained above, according to this invention, the guide member can be moved from the non-use position to the use position in one movement, allowing the worker to work without taking his hand off the cloth. This has the effect that work can be carried out smoothly, problems such as unsewn parts do not occur, and productivity can be greatly improved.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of an embodiment of this invention, Fig. 2 is a plan view of essential parts of an embodiment of this invention, and Fig. 3 is a cross-sectional view taken along the line -- of the same as shown in Fig. 2. 4 and 5 are longitudinal sectional side views showing the operating state of the device shown in FIG. 3, FIG. 6 is a plan view showing a conventional cloth guiding device, and FIG. 7 is a cross-sectional view of the device shown in FIG. 6. FIG. 8 is a cross-sectional view taken along the line -- of the structure shown in FIG. 6, and FIG. 9 is an enlarged side view of the main part of the structure shown in FIG. 15... Hemming guide (fabric guide member), 17...
Support body, 26... Operating body, 29... Spring (biasing member), 45... Locking piece, 46... Locking portion, 47...
...stopper part, 48...spring (elastic member).

Claims (1)

[Scope of utility model registration request] a support fixed to the machine frame; a cloth guide member rotatably provided on the support and rotated from a use position to a non-use position; an engaging portion protruding from the upper surface of the guide member; an operating body connected to the cloth guide member and rotatably connected to the support body; a biasing member that urges the operation body toward the cloth guide member; A locking piece that engages with the engaging portion and prevents rotation of the cloth guide member to a non-use position, and the locking piece is driven by rotation of the operating body toward the non-use position. What is claimed is: 1. A cloth guiding device characterized in that the cloth guiding device is rotatable in the same direction as the cloth guiding device, and is always biased in the direction of the use position by a desired elastic member.