JPH01293898A - Pedal mechanism for driving unit of sewing machine - Google Patents

Abstract

PURPOSE:To make it possible to provide both installing operation and moving operation, by a method wherein an almost U-shaped supporting bar revolvable in the horizontal direction is fitted on the supporting plate and also connected with a pedal stand in removal-free state, and a pedal mechanism is thus composed. CONSTITUTION:When a sewing machine is operated by a controller and sewing work is done, the machine is installed on the floor 1 at the further position restricted by the supporting bar 3, since a long side 4 of the supporting bar 3 is mounted through a metal fitting 8 and a pedal stand 9 vertically moves along the supporting bar 3 by a dead weight. In this installing state, thus, a pedal 12 for speed and switch control is stably operated by foot. On the other hand, when the machine is not used, a nut 6 or 7 is loosened, and a pedal mechanism P is lefted, being slid through the metal fitting 8 along the supporting bar 3. When the pedal stand 9 is raised above the height of the supporting plate, it is turned counterclockwise with the supporting bar 3 loosened, and placed on the supporting plate 2. Since the pedal stand 9 is apart from the floor 1 and held on the supporting plate 2, as a result, it is possible to move a sewing machine table at any place.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pedal mechanism for a sewing machine drive device, and more particularly to an improvement in a pedal mechanism for standing work.

[Prior Art] A conventional device of this type, disclosed in, for example, Japanese Utility Model Application No. 61-101811, is shown in FIGS. 4 to 6.

In each figure, (1) is a floor surface, and (2) is a support plate with a U-shaped cross section. The support plate (2) is arranged horizontally between the legs of a table (not shown), away from the floor (1). (30) is a lever unit that outputs a variable speed operation command, and (31) is a connection line. A connecting line (31) connects the lever unit (30) and a control device (not shown). (32) is a lever, (34) is a unit case, (35) is a protrusion provided on the unit case (34), and (36) is a stand for mounting the lever unit. For installation, the lever unit (30) is attached to the stand (36) and fixed to the support plate (2) with bolts (38). (42) is a support plate, (44) is a hinge, and the support plate (
42) is attached to the base (36) by a hinge (44). (46) is a pedal stand, and (4g) is a fixing bolt for fixing the pedal stand (46) to the support plate (42). The pedal stand (46) has a vertically long elongated hole (4
9) is provided, and a fixing bolt (48) is inserted through this elongated hole (49) so that the height of the pedal stand (46) from the floor surface (1) can be adjusted.

(51) and (52) are foot-type speed pedals and switch pedals. Both pedals (51) and (52) are mounted side by side on the pedal stand (46) by hinges (54) and inclined toward the depth. The movable end of the speed pedal (51) is connected to the lever (32) via a connecting rod (56). (57) is a foot switch, and (58) is a bent portion formed at the tip of the switch pedal (52). The bent portion (58) corresponds to the protrusion (35) of the unit case (34).

By the way, in order to improve productivity, this type of pedal mechanism is operated while standing, so the pedal is placed in contact with the floor, and the sewing machine table is moved on casters to move it around the sewing line as appropriate. It is designed to be incorporated and used at any time. Therefore, when sewing is finished or interrupted, it is necessary to hold the pedal mechanism in a floating state away from the floor surface in advance to enable movement within the sewing line.

In the conventional pedal mechanism as described above, when the switch pedal (52) is lifted, the pedal stand (46) and the support plate (42) rotate counterclockwise about the hinge (44) as shown by the arrow. .

Then, when the bent part (58) is hooked onto the protrusion (35), the support plate (42) and the pedal base (46) are connected to the two pedals as shown by the dashed line in FIGS. 5 and 6. (51)
, (52) and are held apart from the floor surface (1). After such preparations are completed, the sewing machine table can be moved and installed at an arbitrary position within the sewing line.

After installing the sewing machine table on the sewing line,
Remove the bent part (58) from the protrusion (35) and remove the pedal stand (4).
6) etc. are returned to the state shown by the solid lines in Figures 5 and 6. In this case, if there is a gap under the pedal stand (46) or it is too high due to unevenness of the floor surface (1), loosen the bolt (48) and remove the above gap or the left and right sides of the pedal stand (46). Adjust defects such as tilt. After adjustment, by operating the speed pedal (51) and switch pedal (52), various operations such as speed control of the sewing machine and driving/stopping of the drive device can be performed with foot movement.

[Problems to be Solved by the Invention] Since the pedal mechanism of the conventional sewing machine drive device is configured as described above, the height of the support plate (2) from the floor surface (1) is usually adjusted when the sewing machine table is installed. Depending on the situation, it is necessary to loosen and adjust the fixing bolt (48) so that the pedal stand (46) comes into contact with the floor (1) each time. In addition, the pedal stand (46) etc. can only be held in one place where the protrusion is provided, and that position is uneven, so when the weight is unbalanced and the sewing machine table is moved, the pedal stand (46) etc.
There is also the risk of dragging the item 6) on the floor (1).

In particular, the bending part (58) due to shaking when the sewing machine table is moved.
When the engagement with the protrusion (35) is removed, the pedal base (46)
There is a problem that there is a risk that the product may fall onto the floor (1) and be damaged.

The present invention was made to solve the problems of the conventional pedal mechanism, and connects the pedal stand and the support plate with a support rod in the shape of a cylindrical shape, allowing both installation and movement operations. It is an object of the present invention to provide a pedal mechanism for a sewing machine drive device that can be prepared for.

[Means for Solving the Problems] The present invention provides a pedal in which a substantially U-shaped support rod that is horizontally rotatable is provided on a support plate, and the support plate and the pedal base are removably connected by the support rod. It consists of a mechanism.

[Function] By lifting the pedal stand from the floor, rotating the pedal stand together with the support rod, and placing it on the support plate, the sewing machine body can be moved and incorporated into the sewing line. Conversely, if you lower the pedal stand from the support plate and position the metal fitting near the tip of the long side of the support rod, the metal fitting inserted through the support rod will move up and down along the long side, allowing the pedal stand to move up and down. It becomes free and is placed on the floor again.

[Embodiments of the Invention] FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention, FIG. 2 is a top view of FIG. 1, and FIG. 3 is an explanatory diagram of the operation of the present invention.

In FIGS. 1 and 2, the same symbols as those in FIGS. 4 to 6 described above represent elements having substantially the same structure and function, and therefore, redundant explanation will be omitted. (3) is a support rod provided on the support plate (2). The support rod (3) is formed into a substantially U-shape with one side (4) of the open end being long, and a screw is formed at the tip of the short side (5). (6) and (7) are nuts that are screwed into the screws on the short side (5), and are screwed in from above and below across the support plate (2) to fix the support rod (3) to the support plate (2). There is.

(8) is a metal fitting into which the support rod (3) is inserted.

The metal fitting (8) is made by bending a plate material into a square frame shape, and is fixed by welding to the front plate (10) that is integrated with the pedal stand (9). The height (hl) of the metal fitting (8) from the floor surface (1) is selected to be lower than the height (h2) of the support rod (3) from the support plate (2).

Further, a plurality of pedals (12) are attached to the pedal stand (9) by means of a hinge (11) provided at the end on the near side so as to be inclined toward the depth.

In addition, a sensor unit (13) for sensing the movement of the pedal (12) is arranged at the upper part of the back of the pedal stand (9), and is connected to a sewing machine control device etc. by a connection line (not shown). ) can transmit an operation signal of the sewing machine in relation to the depression of the button. The pedal mechanism of the present invention (
P) is configured.

In the pedal mechanism (P) of the present invention configured as described above, when the sewing machine is driven by the control device and sewing processing is performed, the metal fittings (8 )
The long side (4) of the support rod (3) is passed through. Therefore, the pedal stand (9) can be raised and lowered by its own weight along the support rod (3), and the floor surface (1) is regulated by the support rod (3).
) comes into contact with a remote location on the top and is installed.

Therefore, with this installation, the speed and switch pedals (12) can be stably operated by foot.

Here, when the speed pedal (12) is stepped on, the connecting rod (56) shown in Fig. 4.5 and the lever connected to it (
32), a variable speed signal is sent from the lever unit (30) to the control device via the connection line (31). Then, variable speed operation of the sewing machine drive device becomes possible in accordance with the amount by which the speed pedal (12) is depressed. Further, when the switch pedal (12) is depressed, the foot switch (57) is operated and its contact signal is sent to the control device from the connection line in the same manner as described above (FIGS. 4 and 6).

As a result, the driving device of the sewing machine is stopped and the subsequent thread cutting operation is started.

When not sewing, first loosen the nut (5) or (6). Next, attach the metal fittings (8) to the support rod (3).
Lift up the pedal mechanism (P) while sliding it along. When the pedal stand (9) exceeds the height of the support plate (2), the loosened support rod (
3), rotate the pedal stand (9) counterclockwise and place it on the support plate (2). Support plate (2) for the pedal stand (9)
Place it on top, then tighten nut (5) or (6) and place it back on. As a result, the pedal stand (9) is separated from the floor surface (1) and held on the support plate (2), so that the sewing machine table can be moved to any desired position. In this case, although not shown, the support plate (2) and the pedal stand (9)
The pedal stand (9) can be prevented from shaking by an appropriate fixing member provided at the.

After that, bring the sewing machine table into the sewing line and loosen the nut (5) or (6).

Then, by lifting the pedal mechanism (P) and returning it to the position shown in Fig. 2, the pedal stand (9) will move from the long side (4) of the support rod (3
), it will be able to be moved up and down again, and will be placed on the floor (1) again.

When you want to separate the pedal mechanism (P) from the sewing machine table during sewing, use the nut (5).

(6) and remove the fitting between the metal fitting (8) and the support rod (3). For example, the pedal mechanism (P) can be stably installed at a position away from the sewing machine main body. As a result, the pedal mechanism (P) can be used separated from the sewing machine table in accordance with the allowance for connection wiring with the control device, etc. Moreover, it goes without saying that the pedal stand (9) can be connected to the support plate (2) using the support rod (3) by the operation opposite to the above.

In addition, in the embodiment, the support rod (3) is replaced with a square frame-shaped metal fitting (8).
Although the explanation has been given by way of example of a case where the metal fitting is inserted through the metal fitting, a ring-shaped metal fitting may also be used. In addition, although we have explained the case where the support rod (3) is fixed to the support plate (2) with screws, it is also possible to connect this part with a rotatable shaft and place the pedal stand (9) on the support plate (2). Sometimes they may be fixed by other fixing means. Furthermore, although the support rod (3) is made by bending a round bar into a substantially U-shape, it is possible to connect the short side (5) and long side (4) with a plate so as to be rotatable. The metal fitting (8) may be formed into a letter shape, and the structure of the metal fitting (8) is not limited to the structure of the above-described embodiment.

[Effects of the Invention] As explained above, the present invention includes a substantially U-shaped support rod that is rotatably attached near the tip of the short side on a support plate, and a pedal stand that is inserted through the long side of this support rod. A pedal mechanism is constructed by connecting the support plate and the pedal stand using metal fittings fixed to the pedal. Therefore, when the pedal mechanism is placed on the support plate, it is in a movable state, and when it is taken down, it is set for use. In addition, as shown in Figure 3, the pedal stand can be used by tilting the support plate at any angle (θ), and if necessary, the pedal stand can be separated from the sewing machine body by disengaging the support rod and the metal fittings. It can also be operated remotely.

Therefore, according to the present invention, installation and movement operations are easy;
Furthermore, it is possible to provide a petal mechanism of a sewing machine drive device that is convenient to handle.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of the device according to the present invention, and FIG.
3 is an explanatory diagram of the operation of the present invention, FIG. 4 is an explanatory diagram of the configuration of the conventional device, FIG. 5 is an explanatory diagram of the left side of FIG. 4,
FIG. 6 is an explanatory cross-sectional view taken along line XX in FIG. 5. In Figure 1, (1) is the floor surface, (2) is the support plate, and (3) is the floor surface.
) is the support rod, (4) is the long side, (5) is the short side, (6) and (
7) is a nut, (8) is a metal fitting, (9) is a pedal stand, (1)
0) is the front plate, (11) is the hinge, (12) is the pedal,
(13) is a sensor unit, and (P) is a pedal mechanism. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A support plate disposed horizontally between the pillars of the sewing machine table, a pedal stand connected to the support plate, and a hinge provided near the front end of the pedal stand. A foot pedal is mounted on the pedal stand and is inclined highly in the depth direction, and transmits an operation signal to a sewing machine control device etc. in connection with the pedal depression, and the foot pedal is attached to the support plate near the tip of the short side. A substantially U-shaped support rod is attached so as to be rotatable in the horizontal direction, and a metal fitting is provided in the front part of the pedal stand through which the long side of the support rod is inserted, and the metal fitting is positioned near the lower end of the long side. The sewing machine drive is characterized in that the pedal stand is movable up and down and installed on the floor surface, and the pedal stand is raised and then rotated together with the support rod and placed on the support plate. Pedal mechanism of the device.