JPS6221271Y2 - - 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 section of the operating device that needs to be operated be provided near the stitch forming position.

For example, Japanese Utility Model Publication No. 53-28601 discloses an operating device in which the operating section is provided near the front surface of the jaw of a sewing machine arm.

However, in this type of conventional device,
Since the main body of the operating device and its operating section protrude outward from the sewing machine arm, it may malfunction if your hand accidentally touches the operating section during sewing work or if the workpiece cloth gets caught. In addition to this, the appearance of the sewing machine may be damaged.

Purpose The present invention has been made in view of the above circumstances, and its purpose is to provide an operating device that is free from malfunction and does not damage the appearance of the sewing machine.

Solution In order to achieve the above object, in the present invention, a recess is formed inside the outline of the sewing machine arm in the vicinity of the needle drop point, a mounting frame is removably mounted in the recess, and a mounting frame is attached to the mounting frame. ,
A manual operating body having an operating section located in the recess at one end, and a switch that is operated as the manual operating body is moved to operate at least one of various functions of the sewing machine are attached.

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 shaft 1 is operatively connected to the feed adjustment mechanism and is swingably supported by the pillar portion 11.
3, a reversing lever 14 is fixed to one end of the pillar portion 11 projecting outward, and reverse feeding is performed when the reversing lever 14 is operated downward.

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. The sliding body 28 also includes a locking portion 31 having a square cross section and fitted into the locking hole 27 in order to position and hold the operating portion 29 at the first and second operating positions; Subsequently, the support hole 2
5 and a shaft portion 33 which is rotatable with respect to the locking hole 27 and has a fitting groove 32 formed in the intermediate portion.

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 the two prongs formed at the free end of the leaf spring 36 are 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 plate 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.

Effects As detailed above, in the present invention, since the operating device 20 including the operating section 29 is disposed in the recess 19 cut out inside the outline of the sewing machine arm 10 near the needle drop point, the sewing operation can be easily performed. There is no risk of erroneous operation during operation, and there is no damage to the appearance of the sewing machine.Furthermore, since it is made into a unit using the mounting frame 23 and is removably attached to the sewing machine arm 10, assembly is easy. It is something that is done.

[Brief explanation of the drawing]

Each of the drawings shows an embodiment in which the present invention is embodied in an operating device for a feed/reverse mechanism.
The figure is a front view showing the position of the operating device, etc.
The figure is an enlarged front view showing the main parts, Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is B in Figure 2.
5 is a sectional view taken along line C-C in FIG. 4. In addition, in the figure, 10 is a sewing machine arm, 19 is a recess, and 2
3 is a mounting frame, 29 is an operating section, 30 is a manual operating body, and 34 is a switch.

Claims (1)

[Claims for Utility Model Registration] A recess 19 cut out inside the outline of the sewing machine arm 10 in the vicinity of the needle drop point, and a recess 19 located within the recess 19.
a manual operating body 30 movably supported by the mounting frame 23 and having an operating section 29 located in the recess 19 at one end; and the mounting frame 23. 23, and a switch 34 which is operated in accordance with the movement of the manual operating body 30 to operate at least one of the various functions of the sewing machine.