JPS6247379U - - 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. Fig. 3 is a half cross-sectional view taken along arrow D, showing the spring pressure adjustment mechanism; Fig. 7 is a sectional view taken along line H-H in Fig. 4, showing the installation of the magnet; Fig. 8-A 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, 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. Note that the same reference numerals in the drawings 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 braking 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. A petal lever device for an electric sewing machine, comprising: a control circuit for setting and stopping the sewing machine based on a sewing machine needle position signal from the position detector; and a pedal for driving and stopping the sewing machine by depressing and stepping back; A sliding shaft that is connected by a connecting rod and interlocks with the petal, a sliding bearing part of the sliding shaft, a part that creates a neutral stopping position of the sliding shaft, and a sliding shaft that is always in the neutral position as the sliding shaft moves. The sliding member includes a spring that generates a reaction force to restore the original state, a sliding piece that interlocks with the sliding shaft through a pin provided on the sliding shaft, and a detection circuit that detects a specific position of the sliding piece. A housing that supports a moving shaft, a bearing, a spring, a sliding piece, and a detection circuit, a support means that rotatably supports the housing, and the detection circuit and the control circuit are connected. A connecting means is provided for supplying one or more switch signals outputted from the detection circuit and a signal that changes according to the amount of depression of the pedal to the control circuit when the pedal is depressed or depressed , thereby controlling the sewing machine. A petal lever device for an electric sewing machine, characterized in that it has a configuration for controlling drive and is rotatably mounted via a motor frame mounting plate.

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 portion of the sliding shaft, a portion that creates a neutral stopping position of the sliding shaft, and a spring that creates a reaction force that always returns the sliding shaft to neutral as it 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 bearing, and a spring. a housing for supporting the sliding piece and the detection circuit; support means for rotatably supporting the housing; and connection means for connecting the detection circuit and the control circuit; The motor frame mounting plate is configured to control the driving of the sewing machine by supplying one or more switch signals output from the detection circuit and a signal that changes depending on the amount of pedal depression to the control circuit when the pedal is depressed. A petal lever device for an electric sewing machine, characterized in that it is rotatably attached through a lever.