JPS61194488U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing a petal lever device of an electric sewing machine according to an embodiment of this invention, Fig. 2 is a side view thereof, and Fig. 3 is a cross-sectional bottom view taken along line A-A in Fig. 1. , FIG. 4 is an electric circuit diagram of the embodiment, and FIG. 5 is a block diagram showing the configuration of the electric sewing machine.
FIG. 6 is a block diagram of the control circuit, and FIG. 7 is a time chart of main signal outputs of the electric sewing machine. 1 is a housing, 2 is a sliding shaft, 20 to 22, 23 are detection circuits (photointerrupter, Hall element), 24
is a connecting means (connecting wire), 27 is a connecting rod, 29,
30 is a support means (stepped screw, mounting bracket), 43 is a petal, 54 is a motor (clutch motor), 59
is a position detector (detector), and 61 is a control circuit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] a motor having a drive mechanism that drives the sewing machine and a braking mechanism that stops the sewing machine; a position detector that detects the position of a needle at at least one location on the sewing machine; and a position detector that sets the rotational speed of the motor; A petal lever device for an electric sewing machine includes a control circuit that stops the sewing machine based on a sewing machine needle position signal, and a pedal that drives and stops the sewing machine by depressing and stepping back. a sliding shaft that interlocks with the sliding shaft, a sliding bearing part of the sliding shaft, a part that creates a neutral stopping position of the sliding shaft, and a spring holding part that creates a reaction force that always returns the sliding shaft to neutral as the sliding shaft moves. and a casing constituting a holding portion of a detection circuit provided on the sliding shaft for detecting a specific position, supporting means for rotatably supporting the casing, and the detection circuit and the control circuit. connecting means for connecting the sewing machine, and supplying one or more switching signals outputted from the detection circuit and a voltage signal that changes according to the pedal depression to the control circuit when the pedal is depressed, thereby controlling the sewing machine. A petal lever device for an electric sewing machine, characterized in that it is configured to control the drive.