JPS60195688U - Sewing machine bobbin thread consumption detection device - Google Patents

Abstract

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

Description

[Brief explanation of the drawing]

゛ Figure 1 is a block diagram showing the electrical configuration of an embodiment of the present invention, Figure 2 is an asymmetrical view of the mechanical configuration of this embodiment,
Fig. 3 is a top view of the sewing machine shown in Fig. 2, with the top surface removed to show the front mechanical mechanism, and Figs. Figure 4A is a time chart showing the light emission signal, Figure 4B is a time chart showing the reference signal, Figure 4C is a time chart showing the clear signal, and the fourth diagram is the time chart showing the light reception signal. FIG. 4E is a time chart showing data signals, FIG. 4F is a time chart showing control signals, and FIGS. Figure 5A corresponds to Figure 4A, and Figure 5B corresponds to Figure 4B. Drawing, Figure 5C is the 4th
The fifth diagram corresponds to the fourth diagram, the fifth diagram corresponds to the fourth diagram, the fifth diagram E corresponds to the fourth diagram E, the fifth diagram F corresponds to the fourth diagram F, and the fifth diagram corresponds to the fourth diagram. Figures 6A to 6F show the state numbers of each signal when infrared rays are received by the phototransistor even though the phototransistor does not exist in a predetermined position. The corresponding drawings, Fig. 6B is a drawing corresponding to Fig. 4B, Fig. 6C is a drawing corresponding to Fig. 4C, Fig. 6 is a drawing corresponding to Fig. 4, Fig. 6E is a drawing corresponding to Fig. 4B. Drawing corresponding to Figure 4E, Figure 6F is Figure 4F
This is a drawing corresponding to . 1 is a bed, 5 is a bobbin, 51 is a flange, 7 is an opening, 8 is an opening/closing cover (lid), 9 is a light emitting diode (light emitting element)
, 10 are phototransistors (light receiving elements).

Claims (1)

[Claims for Utility Model Registration] 1. A bobbin 5 in which at least one of the flanges 51 is formed of a light-transmitting material and around which the bobbin thread is wound; a light emitting element 9 that projects light through the flange 51 onto the bobbin thread wound on the bobbin 5; and a light receiving element 10 that faces the flange 51 of the bobbin 5 and receives the light reflected by the bobbin thread. Sewing machine bobbin thread consumption detection device. 2. The bobbin thread consumption detection device for a sewing machine according to claim 1, wherein the light emitting element 9 emits infrared rays. 3 The light emitting element 9 and the light receiving element 10 are connected to the bobbin 5.
Detection of bobbin thread consumption of a sewing machine according to Claim 1 of the Utility Model Registration Claim, characterized in that the lower thread consumption detection device is installed on a lid body 8 that can be opened and closed to cover an opening lower provided on a sewing machine frame 1 for replacement of the lower thread of the sewing machine. Device.