JPS6247382U - - 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 sectional view taken along the line A--A in Fig. 1. , Fig. 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, showing how the connecting wires are fixed, and Fig. 6 is a cross-sectional view taken along the line C--C in Fig. 3. 7 is a cross-sectional view taken along line H-H in FIG. 4 and shows the installation of the magnet. FIG. A cross-sectional view of arrow G shown in the figure, FIG. 8-B is a cross-sectional view of arrow F shown in FIG. 3.
FIG. 8-C is a cross-sectional view taken in the direction of arrow E shown in FIG. FIG. 10 is a block diagram of the electric sewing machine showing the usage state of the example, FIG. 11 is a block diagram of the electric sewing machine, FIG. 12 is a block diagram of the control circuit, and FIG.
Figure 3 is a time chart of the 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 bracket, 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 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 control circuit for setting and stopping the sewing machine based on a sewing machine needle position signal from the position detector; and a control circuit for driving and stopping the sewing machine;
An electric sewing machine having a pedal that is operated by stepping back, a sliding shaft that is connected to the petal by a connecting rod and interlocks with the petal, a sliding bearing portion of the sliding shaft, and a neutral stop of the sliding shaft. A part that creates the position, 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 the sliding shaft. a casing that includes a detection circuit that detects a specific position of the piece and supports the sliding shaft, the bearing, the spring, the sliding piece, and the detection circuit ; and a casing that rotatably supports the casing. and a connecting means for connecting the detector circuit and the control circuit, and the pedal is configured to detect an output from the detection circuit when the pedal is depressed or depressed. In a petal lever device that controls the driving of the sewing machine by supplying one or more switch signals and a signal that changes according to the pedal depression to the control circuit, An electric sewing machine characterized in that a magnet for generating a signal that changes according to the direction of the movement is fixed at a certain inclination with respect to the Hall element by a projection having a spring property provided on the sliding piece. 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; a control circuit for stopping the sewing machine based on a sewing machine needle position signal; and a control circuit for driving and stopping the sewing machine;
An electric sewing machine having a pedal that is operated by stepping back, a sliding shaft that is connected to the petal by a connecting rod and interlocks with the petal, a sliding bearing portion of the sliding shaft, and a neutral stop of the sliding shaft. A part that creates the position, 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 the sliding shaft. a detection circuit for detecting a specific position of the piece; supporting means for supporting the sliding shaft, the bearing, the spring, the sliding piece, and the detection circuit; the detector circuit and the control circuit; and a connecting means for connecting the sewing machine to the control circuit, which supplies one or more switch signals outputted from the detection circuit when the pedal is depressed and a signal that changes according to the depression of the pedal to the control circuit. In a petal lever device for controlling drive, a protrusion having spring properties provided on the sliding piece fixes a magnet for generating a signal output from the detection circuit that changes according to depression of the petal. A petal lever device for an electric sewing machine is characterized in that the Hall element is made to have a certain inclination.