JPS6349270Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement in the attachment of a petal device and an improvement in operability when sewing is performed while standing.

[Conventional technology]

Conventional devices of this type include those shown in FIGS. 1 to 4. FIG. 1 is a front view of a typical standing sewing machine operation, where 10 is a sewing machine table, the sewing machine 12 is mounted on the upper surface of this sewing machine table 10, and the variable speed clutch motor 14 is mounted on the lower surface.
is fixed. Sewing machine pulley 1 for sewing machine 12
A pulley 18 is provided on the output shaft of the variable speed clutch motor 14, and both are connected by a V-belt 20. A detector 22 detects the speed and needle position of the sewing machine. It is fitted into a sewing machine shaft (not shown), and signals detected here are fed back to a control panel 24 (hereinafter referred to as control panel) of the variable speed clutch motor.

Reference numeral 30 denotes legs for the sewing machine table. Generally, when sewing is done while standing, the sewing machine table has casters 32 for movement under the legs in order to prioritize efficiency and make it easy to change the sewing line. It is installed. FIG. 2 is a sectional view taken along the line -- in FIG. 1. Reference numeral 40 denotes a petal stand, which is fixed with a bolt 44 to a petal mount 42 of a table leg (normally, during seated sewing work, a petal for speed variable and thread cutting operations is attached to this part). 46
is a foot switch, and a foot switch pedal 48 is provided above the foot switch 46 to facilitate its operation, and is fixed to the petal base 40 by a hinge 50. 52 is a cord coming out from the foot switch, and the tip is connected to the control panel 24.
It is connected to the.

Next, we will explain how to use it when working with a standing sewing machine. Usually, about three foot switches 46 are used, and 54 is for a start signal for the sewing machine, and while this switch is turned on, the sewing machine rotates at a speed set by a volume control mounted on the surface of the control panel. When this switch is turned OFF, the sewing machine will stop at the needle down position. Reference numeral 56 is a thread trimming signal for the sewing machine, and when this switch is turned on, if reverse stitching is set, reverse stitching is performed and then thread trimming is performed. 58 is a signal for lifting the presser foot, which is used when rotating, attaching, and taking out the sewing product. When the sewing machine speed is frequently changed depending on the sewing part of the product, the volume installed on the surface of the control panel mentioned above can be extended to near the worker's hand, and the speed can be adjusted from low to high speed. If only high speed or low speed (for inching) is required, each foot switch can be added and connected to the control panel to enable high speed and low speed operation.

In conventional standing sewing machine operations, since the sewing machine is configured as described above, it is not possible to change the speed during sewing operations (sewn items with many curved parts).

In other words, it is difficult to change the speed with the above-mentioned volume during sewing, and the speed cannot be adjusted only after one process is completed.

As described above, conventional standing sewing machines are not suitable for sewing at variable speeds during one process, and are often used for sewing long distances at a constant speed. However, in recent years, even when working with a standing sewing machine, the work content has become similar to that of working with a sitting sewing machine (sewing short distances with many curved parts). This product has become necessary even when working with a standing sewing machine.

Although it is not impossible to use the petals used for sitting sewing machines for standing sewing machine work, as shown in Fig. 4, for standing sewing machine work, the above-mentioned caster 3
2 is used, so the petal 60 is the petal mounting base 4.
Since the petal 60 is attached to the top of the petal 2, the position Y of the petal 60 is too high, making it easy for the worker to cover the petal 60, making it impossible to work for a long time.

By the way, FIG. 3 shows a structure devised by a certain garment factory for variable speed in standing sewing machine work, in which the wire 78 is connected to a pulley fixed to the petal mount 42 halfway through the lever 88 of the control panel 24. It is attached to a petal 76 via a pulley 74 on a mounting rod 72. Although such a structure allows the speed to be varied during one process, it is troublesome for the user to install this device, and these parts are also arranged in lots at only one factory, which tends to increase costs. Furthermore, since the wire 78 is used to pull the button, the stepping operation may not be performed smoothly.

[Summary of the idea]

The present invention was made to eliminate the above-mentioned drawbacks of the conventional technology, and the purpose is to provide a petal mechanism device that is easy to operate at variable speed even when working on a standing sewing machine, is easy to install, and is inexpensive. This is what we provide.

In order to achieve this purpose, the present invention fixes the lever unit attached to the control panel and the case that houses the lever unit on the pedal mount 42, and connects the foot pedal and the lever with a connecting rod. A foot pedal that makes the pedal easier to operate and outputs a signal on the pedal stand that changes the rotational speed of the sewing machine depending on the amount of pedal depression, and work means such as thread cutting and presser foot lifting necessary for operating the sewing machine. A foot switch pedal is installed in parallel to output a signal according to the Furthermore, the number of foot switches can be installed as desired depending on the working means.

[Example of idea]

Below, preferred embodiments of the present invention are shown in Figures 5 to 9.
The diagram will be explained. FIG. 5 is a front view, FIG. 6 is a left side view, and FIG. 7 is a sectional view taken along the line -- in FIG. Reference numeral 80 denotes a lever unit attached to the control panel 24, and is housed in a case 82 that houses the lever unit. The case 82 is fixed to a case mounting plate 100 that serves as a reinforcing horizontal crosspiece at the bottom of the sewing machine table leg, and the case mounting plate 1
00 is fixed to the petal mount 42 with bolts 84. 130 is a lid of the case 82. 86
is a connecting rod that connects the lever 88 and the petal 90 via a ball joint 122. The petal 90 is fixed to a petal stand 92 with a hinge 94. 96 is the petal stand mounting plate, and the upper part is the hinge 98
is fixed to the case mounting plate 100, and the lower part is fixed by a petal stand 92 and screws 102. 104 is a cord coming out from the lever unit and connected to the control panel 24. Reference numeral 106 is a foot switch pedal, and a petal base 92 is attached to the hinge 94.
is fixed. 110 is another foot switch, and a foot switch petal stand 112
A petal connecting plate 114 is fixed to the left side of this foot switch petal base 112, and is fixed to the petal base 92 at several places with screws 116, and several screw holes are drilled on the right side. If desired, an identical foot switch panel pedestal 112 can be mounted as shown in phantom.

The petal mechanism configured in this way is the petal 9
0, the lever 88 is pulled downward via the connecting rod 86, and the lever 88 can be depressed until it hits the stopper 120. Depending on the amount of depression, the lever unit 80 generates a rotational speed command output for the sewing machine. , is transmitted to the control panel 24 through the code 104. Petal 90 and Lever 8
Since the horizontal positional relationship of 8 (X direction in Figure 5) is fixed, the connecting rod is designed so that there is almost no inclination, so the ball joint part 122 does not twist when the pedal is depressed. So you can get smooth pedal operation. In addition, in order to adjust the inclination of the petal 90, one of the connecting rods 86 has a right-handed thread, and the other has a left-handed thread, and both ends are screwed into the ball joints 122, so that the inclination of the petal can be adjusted. It's easy.

The foot switches 106 and 110 are each used to signal presser foot lifting for thread trimming, but in case the user specifically requires other signals, it is also possible to install an arbitrary number of switch pedal stands 112 on the right side as described above. be.

In this way, by adopting the petal mechanism of the present invention, when a user who has conventionally been working with a seated sewing machine changes to working with a standing sewing machine, the control panel 2
The lever unit 80 is removed, assembled into the present petal mechanism, and installation is very simple and inexpensive by simply fixing it on the petal mount. In addition, the speed can be varied from low to high speed by changing the amount of pedal depression, and the operation involves placing the heel on the floor and stepping on the petal with the tip of the foot, so it is very easy to operate when working with a standing sewing machine and improves efficiency. Improvement can be measured.

In the standing sewing machine operation, the caster 32 is attached as described above, and the sewing line is frequently changed. In such a case, if this device is installed, it will cause trouble when moving the table.

Figure 8 shows an example of how to prevent such problems.
It is shown in FIG. FIG. 8 is a view seen from the same direction as FIG. 6, and FIG. 9 is a cross section taken along the line -- in FIG. 5. Bend the tip of the foot switch petal 108 into an L shape, provide a protrusion 132 on the lid 130 attached to the case 82, lift the petal base 92 using the hinges 94 and 98 as fulcrums, and hold the foot switch petal in the state shown by the dashed line. 108 is engaged with the protrusion 132 of the lid 130. If the table is in this state, it will be easy to move the table.

[Effect of idea]

As described above, according to the present invention, the lever unit used in the control panel can be used as is, and
A case for storing the lever unit is supported on a petal mounting base of a sewing machine table, and a foot pedal and a foot switch pedal are mounted on the petal base, and the pedal is connected to the lever via a connecting rod. By outputting a signal for varying the rotational speed of the sewing machine to the lever unit according to the amount of pedal depression of the foot pedal, the speed of the sewing machine can be easily varied depending on the amount of pedal depression. In addition, the foot switch pedal can output signals for thread trimming, presser foot lifting, etc. that are necessary for sewing machine operation, making it easy and inexpensive to install the pedal. The sewing machine has the advantage of being able to easily operate the sewing machine and having good petal operability.

When moving the table, the L-shaped part at the tip of the foot switch petal locks onto the protrusion on the case lid, making it easy to move the table. Also, depending on the user's method of use, an arbitrary number of foot switches can be attached. It has the advantage of being possible.

[Brief explanation of drawings]

Figures 1 to 4 show a conventional device, in which Figure 1 is a front view when working with a standing sewing machine, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a variable speed sewing machine. Fig. 4 is a side view of the petal mechanism, and Fig. 4 is a side view showing the position of the pedal when a caster is attached to the pedal for sitting work to make it into a sewing machine for standing work. Figs. 5 to 9 show the embodiment of the present invention. Fig. 5 is a front view, Fig. 6 is a side view, Fig. 7 is a sectional view taken along the line - - of Fig. 5, Fig. 8 is a side view showing the petal movement state, and Fig. 9 is a 5 is a sectional view taken along the line - in FIG. 5, showing a state in which the petals are moving. In the figure, 80 is a lever unit, 86 is a connecting rod, 88 is a lever, 90 is a petal, 105 is a foot switch, and 108 is a foot switch petal. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) A foot pedal fixed on a pedal stand whose one end is placed on the floor and supported at an angle; A foot switch pedal to which a foot switch is attached, a lever interlocked with the foot pedal via a connecting rod, a lever unit that generates a rotational speed command output of the sewing machine in interlock with this lever, and a foot switch under the sewing machine table leg. The sewing machine is supported on a reinforcing horizontal frame of the sewing machine, and has a case that houses the lever and the lever unit, and sends a signal to the lever unit to vary the rotational speed of the sewing machine depending on the amount of pedal depression of the foot pedal. Petal mechanism of the sewing machine drive device that outputs. (2) The petal mechanism for a sewing machine drive device according to claim 1, which is characterized in that an arbitrary number of foot switches can be attached to the side of the foot pedal. (3) Registration of a utility model characterized in that a protrusion is provided on the front surface of the storage case, and the tip of the petal that operates the foot switch is formed into an L-shape, so that the L-shaped tip of the petal can be locked to the protrusion. A petal mechanism for a sewing machine drive device according to claim 1. (4) Support the storage case and foot pedal at an angle,
A petal mechanism for a sewing machine drive device according to claim 1, wherein the petal mechanism is height-adjustable.