JPS6247381U - - 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 longitudinal section taken along line A--A in Fig. 1. 4 is a cross-sectional view taken along the line B--B in FIG. 3, FIG. 5 is a cross-sectional view taken along the line C--C in FIG. 3 is a half-transverse cross-sectional view taken along arrow D, showing the spring pressure adjustment mechanism; FIG. 7 is a cross-sectional view taken along line H-H in FIG. 4, showing the installation of the magnet; and FIG. is a cross-sectional view of arrow G shown in FIG. 3, FIG. 8-B is a cross-sectional view of arrow F shown in FIG. 3, and FIG. 8-C is a cross-sectional view of arrow E shown in FIG. In the figures, Figures 8-A to C are diagrams explaining the two-step depressing mechanism, Figure 9 is an electric circuit diagram of an embodiment of this invention, and Figure 10 is a configuration of an electric sewing machine showing the usage state of the same embodiment. 11 is a block diagram of the electric sewing machine, FIG. 12 is a block diagram of the control circuit, and FIG. 13 is a time chart of main signal outputs of the electric sewing machine. In the figure, 1 and 2 are the housing, 3 is the sliding shaft, 24 to 26
, 27 is a detection circuit (photointerrupter, Hall element), 30 is a connecting means (connecting wire), 36 is a connecting rod, and 31 to 35 are supporting means (mounting metal fittings, mounting shaft).
, 105 is a petal, 103 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.

Amendment February 18, 1981 The scope of claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] A motor equipped with a drive mechanism for driving a sewing machine and a control mechanism for stopping the sewing machine, a position detector for detecting a needle position at at least one location on the sewing machine, and a rotational speed of the motor. An electric sewing machine is provided with a control circuit that sets and stops the sewing machine based on a sewing machine needle position signal from the position detector, and a pedal that drives and stops the sewing machine by depressing and stepping back. A sliding shaft that is connected and interlocks with the petal, a sliding bearing portion of the sliding shaft, a portion that creates a neutral stopping position of the sliding shaft, and a counter that constantly returns to neutral as the sliding shaft moves. A spring that generates a force, a sliding piece that interlocks with the sliding shaft via a pin provided on the sliding shaft, and a detection circuit that detects a specific position of the sliding piece, ,
A housing for supporting a bearing, a spring, a sliding piece, and a detection circuit, a supporting means for rotatably supporting the housing, and a connecting means for connecting the detector and the control circuit, A petal lever device that controls the driving of the sewing machine by supplying one or more switch signals output from the detection circuit and a signal that changes according to the pedal depression to the control circuit when the pedal is depressed or depressed. The electric sewing machine is characterized in that the connecting wires, which are the connecting means, are fixed to the housing by being inserted into protrusions that protrude from the housing and are arranged in a staggered manner. Petal lever device.

Claims (1)

[Scope of utility model registration request] a motor having a drive mechanism that drives the sewing machine and a control 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; An electric sewing machine having 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, the pedal being connected to the pedal by a connecting rod and interlocking with the pedal. a sliding shaft, a sliding bearing portion of the sliding shaft, a portion that creates a neutral stopping position of the sliding shaft, a spring that creates a reaction force that always returns the sliding shaft to neutral as the sliding shaft moves; A sliding piece that interlocks with the sliding shaft via a pin provided on the sliding shaft, and a detection circuit that detects a specific position of the sliding piece, the sliding shaft;
A housing for supporting a bearing, a spring, a sliding piece, and a detection circuit, a supporting means for rotatably supporting the housing, and a connecting means for connecting the detector and the control circuit, In the petal lever device, the pedal lever device controls the driving of the sewing machine by supplying one or more switch signals output from the detection circuit and a signal that changes according to the pedal depression to the control circuit when the pedal is depressed. A petal lever device for an electric sewing machine, characterized in that a connecting wire, which is a connecting means, is fixed to a housing by being inserted into a sub-number protruding from the housing and protrusions arranged in a staggered manner.