JPS6232554Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an operating device for a sewing machine.

Prior Art During sewing work, the worker's hand is usually placed on the workpiece cloth in order to guide the workpiece cloth placed on the sewing machine bed surface. At this time, it is desirable that the operating position where the operation is necessary is provided in the vicinity of the stitch forming position.

Therefore, for example, Japanese Utility Model Publication No. 53-28601 discloses an operating device in which the operating section is provided in the vicinity of the jaw of the sewing machine arm so as to protrude forward from the outline of the sewing machine arm.

However, in this type of operating device,
Since the operating portion is fixed at the above-mentioned position, the operating position cannot be changed, and it may be difficult to operate depending on the working conditions or the operator. Also, as mentioned above, since the operating part protrudes from the sewing machine arm,
If your hand accidentally touches the operating section during sewing work,
If the work cloth gets caught, there is a risk of erroneous operation.

Purpose The present invention was made to eliminate the drawbacks of the conventional device as described above, and its purpose is to provide good operability for any worker under any working conditions, and to prevent accidental To provide an operating device for a sewing machine that can assume an operating position without fear of being operated.

Solution In order to achieve the above object, in the present invention, a recess is provided at the lower end of the jaw of the sewing machine arm, and the recess is movably supported on the sewing machine arm, and its unidirectional movement allows at least one of the various functions of the sewing machine to be performed. A means operating body for closing a switch for operating the manual operating body is provided, and the operating part of the manual operating body has a first operating position in which most of the operating part is accommodated in the recess, and a second operating position in which it protrudes from the recess. further provided with a locking means for locking the operating section in the first and second operating positions and making it possible to move the manual operating body with the operating section located at each position. There is.

Embodiment Hereinafter, an embodiment in which the present invention is applied to an operating device for a feed/reverse mechanism will be described with reference to the drawings.

The pillar portion 11 of the sewing machine arm 10 is provided with a known feed adjustment mechanism including a feed adjustment dial 12 for adjusting the horizontal movement of a feed dog (not shown) and capable of adjusting the feed amount and feed direction. It is being

A reversing lever 14 is fixed to a reversing lever shaft 13 operatively connected to the feed adjustment mechanism and swingably supported on the pedestal 11 at one end projecting outward from the pedestal 11 . The reverse feed is performed in accordance with the downward operation of the reversing lever 14.

The reversing lever shaft 13 further includes an actuating arm 15.
The plunger 17 of the reversing solenoid 16 is operatively connected through the reversing solenoid 1 .
The above-mentioned reverse feeding can be performed by the operation of 6.

The jaw portion 18 of the sewing machine arm 10 has a recess 1.
9 is formed with a notch, and the reversing solenoid 1
An operating device 20 for operating the recess 1
It is attached so that it is approximately accommodated in 9.

To explain the configuration of the operating device 20,
The lower end of the jaw portion 18 is provided with openings 21 and 22 through which a needle bar metal 39 and a presser bar metal 40 for slidably supporting a needle bar 37 and a presser foot bar 38, respectively, pass through. A mounting frame 23 extending so as to surround the recess 19 is fitted with a screw 24.
It is installed by

A support hole 25 is provided in the protrusion 26 of the mounting frame 23.
is formed, and a locking hole 27 having a square cross section is formed in the front wall portion 41 thereof.

A sliding body 2 is provided in the support hole 25 and the locking hole 27.
8 is fitted and supported, and the sliding body 28 and the mounting frame 23 have an elongated operating portion 29 formed at one end thereof projecting outward and perpendicular to the mounting frame 23 and extending in one direction. The manual operating body 30 is configured by the above.

As shown in FIG. 2, the operating portion 29 is substantially accommodated in the recess 19 in a first operating position extending in the horizontal direction shown by a solid line, and extends in the vertical direction shown by a two-dot chain line. In the second operating position, most of the recess 19 protrudes from the recess 19.

Further, the sliding body 28 positions and holds the operating portion 29 at the first and second operating positions,
A locking part 31 having a square cross section and being fitted into the locking hole 27, and a fitting groove 3 in the middle part, which is rotatable with respect to the support hole 25 and the locking hole 27.
2, and a shaft portion 33 formed with a shank.

Further, a micro switch 3 for operating the reversing solenoid 16 is disposed within the mounting frame 23.
4 is screwed on, and its push button 35 faces the free end of the shaft portion 33.

Further, a leaf spring 36 is screwed into the mounting frame 23, and a forked portion formed at the free end of the leaf spring 36 is fitted into the fitting groove 32. and,
This plate spring 36 has the locking portion 31 located in the locking hole 27.
When the free end of the shaft portion 33 and the push button 35 are in contact with or slightly separated from each other, there is no load, and the manual operating body 30 is in a no-load state.
It is formed so as to exert a force that resists the pressing and pulling operations of the operating section 29.

The operation of the operating device for the feed/reverse mechanism configured as described above will be explained.

Before starting the sewing work, the feed amount is determined in advance using the feed adjustment dial 12, and the position of the operating section 29 of the manual operating body 30 is set to the first or second operating position depending on the type of sewing and the operator's preference. Let's match.

When changing the operating position, the locking part 31 comes out of the locking hole 27 and the shaft part 33 moves into the locking hole 27.
until the manual operating body 30 is inserted into the plate spring 36.
After pulling out the manual operating body 30 and rotating it to the changed operating position, the manual operating body 30 may be released. By doing so, the locking portion 31 is positioned at the position where it is inserted into the locking hole 27 according to the return force of the leaf spring 36, and the operating position does not move inadvertently.

Then, when starting sewing and wishing to perform reverse stitching while sewing in the normal feed direction, the worker's right hand placed on the workpiece cloth is moved slightly and the operating section 29 is pressed against the leaf spring 3.
Press against 6. Then, during the pressing operation, the reversing solenoid 16 is activated, the reversing lever shaft 13 is rotated, and reverse stitching is performed.

In the above embodiment, since the first and second operating positions are changed by pulling out and rotating, the operating device 20 can be made compact. Therefore, it serves as a means for returning the manual operating body 30 to the inactive position and a locking means for locking the operating portion 29 in the operating device in cooperation with the locking hole 27 and the locking portion 31. Therefore, the configuration of the operating device 20 can be made simple.

In the above embodiment, the rotation of the manual operation body 30 is prevented by fitting the locking portion 31 formed in a shape that matches the square locking hole 27 into the locking hole 27. As shown in FIG. 6, a locking portion 31a having a square cross section is cut out in the middle of a shaft portion 33a of a sliding body 28a rotatably supported in support holes 25a and 27a of a mounting frame 23a,
One end of the leaf spring 36a may be pressed into engagement with the locking portion 31a to prevent rotation of the manual operating body 30a.

Effects As detailed above, in the present invention, a recess is provided at the lower end of the chin of the sewing machine arm, and the recess is movably supported on the sewing machine arm, and its one-way movement activates at least one of the various functions of the sewing machine. A manual operating body is provided for closing a switch for the purpose of closing the switch, and an operating part of the manual operating body has a first operating position in which most of the operating part is accommodated in the recess, and a second operating position in which it protrudes from the recess. Further, a locking means is provided for locking the operating portion at the first and second operating positions and making it possible to move the manual operating body with the operating portion located at each position. ,
Work efficiency can be improved because the operating position that is easier to operate can be selected according to the working conditions and the operator's preferences.Also, by keeping the operating position in the first operating position, it is possible to prevent the operator from accidentally touching the operating position. This can prevent malfunctions caused by work cloth being caught or caught.

[Brief explanation of the drawing]

1 to 5 show an embodiment in which the present invention is applied to an operating device for a feed/reverse mechanism, in which FIG. 1 is a front view showing the position of the operating device, etc., and FIG. 2 is a front view showing the position of the operating device, etc. 3 is a sectional view taken along the line A-A in FIG. 2, FIG. 4 is a sectional view taken along the line B-B in FIG. 2, and FIG. 5 is a sectional view taken along the line C-C in FIG. 4. It is a line sectional view, and FIG. 6 is a drawing corresponding to FIG. 3 for showing a modification. In the figure, 10 is the sewing machine arm, 18 is the jaw, 1
9 is a recessed portion, 28 is a sliding body, 29 is an operating section, and 30 is a manual operating body.

Claims (1)

[Claims for Utility Model Registration] 1. A recess 19 formed in the lower end of the jaw 18 of the sewing machine arm 10; a switch 34 for operating at least one of the various functions of the sewing machine; and a switch 34 movable to the sewing machine arm 10. The switch 3 is supported by the unidirectional movement of the switch 3.
4, the operating section 29 closes the recess 19.
a manual operating body 30 that can take a first operating position in which most of the part is accommodated in the recess 19 and a second operating position protruding from the recess 19; locking means 27, 31, etc. for moving the manual operating body 30 with the operating unit 29 positioned at each position; The operation of the sewing machine is characterized in that the switch 34 can be closed by moving the manual operation body 30 in the one direction via the operation section 29 while the switch 34 is located at each of the operation positions. Device. 2. The manual operating body 30 includes: a sliding body 28 that is at least slidably supported on the sewing machine arm 10 and that operates at least one of the various functions as it slides in one direction; and the sliding body 28. the operating portion 29, which is attached at one end facing the outside of the sewing machine arm 10 so as to be able to slide together with the sliding body 28 and to be rotatable relative to or together with the sliding body 28; The operating device for a sewing machine according to claim 1, wherein the portion 29 has one end attached to the sliding body 28. 3 The operating portion 29 has an elongated shape and is locked in the first operating position extending in the horizontal direction and the second operating position extending in the vertical direction by the locking means 27, 31, etc. The operating device for a sewing machine according to claim 2, which obtains a utility model registration.