JPS5955287A - Drive apparatus of sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sewing machine drive device that controls the rotational speed of an industrial sewing machine, the needle stop position, and the solenoid of the sewing machine.

Conventional Structure and Problems Generally, a mink drive device is installed as shown in FIG. That is, a detector 2 is attached to the rotating shaft of the sewing machine 1, and a driving motor 3 is connected to the sewing machine 1 by a belt.
A control device 4 that receives signals from the detector 2 and controls the motor 3 and a plurality of solenoids built into the sewing machine 1 is attached to the bottom surface of the sewing machine table 6, and the control device 4 is interlocked with the pedal 6. They are combined like that.

FIG. 2 shows the external structure of the conventional control device 4, and FIG. 3 shows the internal structure, in which an operation switch 8 and an electric connector 9 are added to the front of the casing 7, a transformer, A power supply unit 10 consisting of a capacitor, etc. and a sag control circuit component 12 built into a printed wiring board 11 are fixed to the Fi housing 7 and sealed with a lower cover 14 attached to the housing 7 with screws 13. . Note that 16 is a pedal operating section connected to the pedal.

Here, the operating switch 8, electrical connector 9, and control circuit component 12 differ depending on the type of sewing machine, and for example, switching from a low-end functional model with a small number of operating switches 8 and electrical connectors 9 to a high-end functional model In this case, the conventional control device had the drawback that each part was integrally fixed to the housing 7, and the entire control device 4 had to be purchased and replaced. When inspecting or repairing the control circuit components 12, the lower cover 14 must be opened, but since several control devices 4 are cut in the positions shown in Figure 1, the workability is extremely poor. , 1, the changeover switch 16 for changing the sequence that controls the solenoid of the machine/1 is built into the printed wiring board 11'2 fixed in the cylinder 7, and its operability is said to be extremely poor. It had drawbacks.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks of the prior art, and aims to improve the workability of installation and repair, and to improve the operability of the trench changeover switch.

Composition of the Invention In the control device constituting the sewing machine driving device of the present invention, the power source section and pedal operation section, which are common parts for each model, are fixed to the housing, and the operation switch section and the electric connector section, which are dedicated parts, are fixed to the housing. By identifying the control circuit components in the chassis and making them into an independent unit component, the control unit, which can be attached and detached from the front of the casing, significantly improves model changeover, workability, and operability.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 4 shows a schematic configuration of the present invention, in which a window 7a is provided on the front side of the housing 7, and a power supply section and a pedal operation section 16 (not shown) are fixed thereto.

Then, a printed wiring board 11 with the control circuit components 12 incorporated therein.
．． Operation switch 8. The electrical connector 9 has an operation panel section 17a on the front surface that covers the window 7m of the casing 7, a part of which is fixed to the chassis 17 housed in the casing 7, and constitutes a control unit 18. There is. In addition, the chassis 17 is removably attached to the housing 7 by screws 19, and the rear end of the chassis 17 has a curved plate slot to prevent the chassis 17 from chattering. Kune 2
0 is fixed. Unfortunately, in order to facilitate the attachment and detachment of the control unit 18, the operation knob of the chassis 17 (flank part 17a
Handles 21 are attached to both ends of the handle. Further, the control circuit component 12, the power supply section, and the pedal operation section 15 are connected by a connector 22, and the changeover switch 16 is incorporated into the printed wiring board 11.

Effects of the Invention As is clear from the above explanation, the present invention provides that the power supply unit and pedal operation unit, which are common parts of each model, are fixed to the housing, and the operation switch, electrical connector, and control unit, which are dedicated parts of each model, are fixed to the housing. The circuit components are integrally fixed to the chassis to form a control unit, and the control unit can be attached and detached from the front of the case, so when switching between models, only the control unit of a different model is required, making it easy to operate. Yes, and also check the control equipment.

When performing repair work or operating the selector switch that changes the sequence that controls the sewing machine's solenoids,
The control unit can be easily pulled out, significantly improving workability and operability.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the assembled state of the sewing machine drive device;
FIG. 3 is an external perspective view of a conventional control device, FIG. 3 is an internal perspective view of the conventional control device, and FIG. 4 is a perspective view of a control device showing an embodiment of the present invention. 1...Sewing machine, 2...Detector, 3...
...Morph, 4...Control device, 7...
...Housing, 7a...Window, 8...Operation switch, 9...Electrical connector, 10...
Power supply section, 12...Control circuit components, 16...
...Pedal operation section, 17...Chassis, 17a
. . . Operation panel section, 18 . . . Control unit. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 3 Figure 4 Figure 4

Claims (1)

[Claims] (1) comprising a motor that drives a sewing machine, a control device that controls the motor, and a detector attached to the sewing machine;
The control device includes a chassis to which a power supply unit and a pedal operation unit are fixed, a sieve body having a window on the front face, and an operation panel unit that covers the window of the casing, a part of which is housed in the casing. A sewing machine driving device comprising a control unit consisting of an operation switch, a control circuit component, and an electrical connector, each of which is fixed, and an operation panel section of the chassis is removably attached to the housing. ? ) The sewing machine drive device according to claim 1, wherein a power supply section and a pedal operation section are fixed to the housing. (2) The sewing machine drive device according to claim 1, further comprising an operation switch and an electric connector in the operation panel portion of the chassis, and a control circuit component in a portion housed in the cylinder.