JPH0616603Y2 - Sewing machine operation signal generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an operation signal generating device for generating an operation signal for switching, for example, between forward feed stitching and reverse stitching in a sewing machine.

[Prior Art] In a conventional sewing machine, an operation member of an operation signal generator is provided near a needle bar of the sewing machine in a vertical direction or a horizontal direction depending on a type of work cloth, a sewing method, or an operator's convenience. The position was adjustable in two directions.

[Problems to be Solved by the Invention] However, in this conventional configuration, the position of the operation member is adjusted only in two directions, that is, the vertical direction and the horizontal direction, and it is not possible to obtain usability that suits the operator. Not only that, but the operating knob at the tip of the operating member is always placed at a predetermined distance from the needle drop point in the cloth feed direction. In the case of turning around a point, there is a problem that the operation knob may be caught on the work cloth and interfere with the sewing work.

The present invention has been made by paying attention to the problems existing in such a conventional technique, and the purpose thereof is to determine the position of the operation member, the type of work cloth, the sewing method, or the usability of the operator. It is possible to freely adjust in three directions of up-down direction, left-right direction and front-back direction according to the situation, and surely prevent the operation knob of the operation member from being caught on the work cloth and hindering the sewing work. An object of the present invention is to provide a sewing machine actuation signal generating device.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the operation signal generating device of the sewing machine of the present invention, the sewing machine is mounted on the sewing machine body so as to be positionally adjustable in either the left-right direction or the up-down direction. And a first support member, which is rotatably supported by the first support member about an axis extending in the left-right direction and positionally adjustable in the other of the left-right direction and the up-down direction, and is operated at an end portion. An operation member having a knob is attached to the first support member such that the position thereof can be adjusted in the front-rear direction, and is engaged with the operation member to generate an operation signal for switching between forward feed sewing and reverse stitching. A second support member to which a switch is attached, and a second support member provided on the second support member, which engages with the operation member according to an adjustment amount of the second support member in the front-rear direction and adjusts its rotation position. And the engaging part for Be prepared.

[Operation] In the sewing machine configured as described above, when the type of work cloth, the sewing method, or the like changes, the position of the operation member can be changed by changing the attachment state of the first support member to the sewing machine main body. It can be adjusted to either left or right or up and down, and by changing the support state of the operation member with respect to the first support member, the position of the operation member can be adjusted to the other of left and right or up and down, and further, By changing the attachment state of the second support member to the first support member, the position of the operation member can be adjusted back and forth.

[Embodiment] An embodiment of a sewing machine embodying the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the sewing machine main body 1 is provided with an arm portion 2, and an operation signal generator 3 for generating an operation signal for switching between forward feed stitching and reverse stitching is provided at the rear portion thereof. ing. Therefore, the configuration of the actuation signal generator 3 will be described in detail. The first support member 4 is substantially box-shaped, and a mounting portion 6 having a pair of elongated holes 5 is provided on one side thereof. The first support member 4 has a long hole 5
It is attached to the rear surface of the arm portion 2 so as to be position-adjustable in the left-right direction by a pair of screws 7 screwed together.

A support shaft 8 extending in the left-right direction is rotatably supported by an upper portion of the first support member 4, and an insertion hole 9 is formed at substantially the center thereof. The rod-shaped operation member 10 is inserted into the insertion hole 9 of the support shaft 8 so that the position of the operation member 10 can be adjusted in the vertical direction, and is fixed at a predetermined position by a screw 11. The lower end of the operating member 10 extends to the front side of the arm 2 through the lower part of the tip of the arm portion 2, and the operating knob 1 is provided at the end thereof.
Two are provided. The coil spring 13 is wound around the support shaft 8 and hooked on the operating member 10 and the first supporting member 4, respectively. The coil spring 13 causes the operating member 10 to rotate toward the front side of the arm 2. Being energized.

The second support member 14 having a substantially L-shaped back surface has the long hole 1
A pair of screws 16 screwed together via 5 are attached to the inner lower portion of the first support member 4 so that the position thereof can be adjusted in the front-rear direction. The switch 17 is fixed to the inner surface of the second support member 14 by a pair of screws 18, and when the operating member 10 is rotated in accordance with the pressing operation of the operating knob 12, the switch 14 is closed and the forward feed stitching is performed. An actuating signal for switching between the reverse stitch and the reverse stitch is generated via the cable 19.

An engaging hole 20 as an engaging portion is formed at the bottom of the second supporting member 14, and the operating member 10 is inserted into the engaging hole 20. Then, when the operation member 10 is always regulated in rotation while being engaged with the front edge of the engagement hole 20 by the action of the coil spring 13, when the position of the second support member 14 is adjusted in the front-rear direction. , The operation member 10 according to the adjustment amount
The rotational position in the front-back direction is adjusted. In addition, operation knob 1
When the operation member 10 is rotated and the switch 17 is closed by the pressing operation of 2, the operation member 10 is engaged with the engagement hole 20.
The opening and closing stroke of the switch 17 is restricted between the front and rear edges of the engaging hole 20 by engaging with the rear edge of the engaging hole 20.

In the sewing machine configured as described above, when it is necessary to adjust the position of the operation knob 12 on the operation member 10 due to a change in the type of work cloth, a sewing method, or the like,
By loosening the screw 7 and changing the mounting position of the first support member 4 to the arm portion 2 of the sewing machine body 13 within the range of the elongated hole 5, the position of the operation knob 12 of the operation member 10 is adjusted to the left and right. It Further, by loosening the screw 11 and changing the mounting position of the operating member 10 with respect to the insertion hole 9 of the support shaft 8 on the first supporting member 4 up and down, the operating knob 1
The position of 2 is adjusted up and down. Further, the screw 16 is loosened and, within the range of the long hole 15, the second supporting member 4 with respect to the second supporting member 4 is released.
By changing the mounting position of the support member 14, the rotational position of the operation member 10 is changed back and forth through the engagement with the engagement hole 20 on the second support member 14, and the operation knob 12
The position of is adjusted back and forth.

Therefore, the position of the operation knob 12 on the operation member 10 can be freely adjusted in three directions of up-down direction, left-right direction, and front-back direction according to the type of work cloth, the sewing method, the usability of the operator, and the like. The knob 12 is the easiest to use and can be easily and freely arranged at a position where it does not hinder the rotation of the work cloth and does not hinder the sewing work.

The present invention is not limited to the configuration of the above-described embodiment. For example, the first support member 4 is attached to the sewing machine main body 1 so that the position of the first support member 4 can be adjusted in the vertical direction, and the support shaft 8 is attached to the first support member 8. The support member 4 is attached to the support member 4 such that the position thereof can be adjusted in the left-right direction, and the position of the operation member 10 can be adjusted vertically and horizontally, and the second support member 14 supporting the switch 17 is not shown. It is not deviated from the gist of the present invention such that it is mounted on the mounting plate so that the position thereof can be adjusted in the front-rear direction, and the interposed plate is mounted so that the position thereof can be adjusted vertically with respect to the first support member 4. It is also possible to embody by arbitrarily changing the configuration of each part within the range.

[Effect of the Invention] Since the present invention is configured as described above,
The position of the operating member can be freely adjusted in three directions of up-down direction, left-right direction, and front-back direction according to the type of work cloth, the sewing method or the usability of the operator, so that the sewing work is not hindered. There is an excellent effect that the switch can be easily operated by the pressing operation of the operation knob arranged at the optimum position to generate the operation signal for switching between the forward feed stitch and the reverse stitch.

[Brief description of drawings]

FIG. 1 is a sectional view of a sewing machine operation signal generator embodying the present invention as seen from the back side, FIG. 2 is a side sectional view of the same, and FIG. 3 is a portion taken along line AA of FIG. FIG. DESCRIPTION OF SYMBOLS 1 ... Sewing machine main body, 3 ... Operation signal generator, 4 ... 1st support member, 8 ... Support shaft, 10 ... Operation member, 12 ... Operation knob, 14 ... 2nd support member, 17 ... Switch, 20 ... Engagement Engagement hole as a joint.

Claims (1)

[Scope of utility model registration request] 1. A first support member (4) attached to a sewing machine body (1) so as to be positionally adjustable in either the left-right direction or the up-down direction, and the first support member (4) in the left-right direction. Is supported so as to be rotatable about an axis extending to the left and right, and positionally adjustable to the other in the left-right direction or the up-down direction, and an operation knob (1
2) and an operating member (10), which is attached to the first supporting member (4) such that the position thereof can be adjusted in the front-rear direction, and engages with the operating member (10) to perform forward feed stitching and reverse stitching. A second support member (14) to which a switch (17) for generating an operation signal for switching and the like is attached, and a second support member (14) provided on the second support member (14). And an engaging portion (20) for engaging with the operating member (10) and adjusting the rotational position thereof according to the amount of adjustment in the front-back direction of the sewing machine.