JPS647316U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a four-way control device according to an embodiment of the present invention, and Fig. 2 shows the input of each part in the same circuit shown in Fig. 1 when the first and second contact switches are turned on. Figure 3 is a circuit diagram with output status display symbols added, and Figure 3 is a circuit diagram with input/output status display symbols added for each part when the first and third contact switches are turned on in the same circuit shown in Figure 1. The circuit diagram shown in Fig. 4 is a circuit diagram of the same circuit shown in Fig. 2 with input/output status display symbols for each part added when the third and fourth switches are turned on. Fig. 5 is a front view of an embodiment of the switch unit that can be used in the above device shown in FIGS. 1 to 4; FIG. 6 is a sectional view of the same unit taken along line AA in FIG. 5; FIG. 7 is a plan view of a single insulating substrate in the above unit, and FIG. 8 is a bottom view of a single press knob in the same unit. 1... Switch unit, 36... First contact switch, 37... Second contact switch, 38...
...Third contact switch, 39... Fourth contact switch, 41... First motor (controlled means), 4
2... Second motor (controlled means), 50... First AND circuit, 51... Second AND circuit, 5
2...Third AND circuit, 53...Fourth AND
circuit.

Claims (1)

[Scope of utility model registration request] A four-way control device that switches and controls a controlled means in four directions using four different first, second, third, and fourth contact switches, each of which has a first, second, third, and fourth contact switch.
, a logic circuit comprising first, second, third, and fourth AND circuits each having four input terminals and controlling the control means in different directions with the output of each of the AND circuits; 1 AND circuit connects the first input end to the second contact switch, the second input end to the first contact switch, and the third input end to the fourth contact switch, The fourth input terminals are connected to the third contact switch, and the second AND circuit connects the first input terminal to the first contact switch and the second input terminal to the third contact switch. The third input terminal is connected to the second contact switch, the third input terminal is connected to the third contact switch, and the fourth input terminal is connected to the fourth contact switch. a first input end to the first contact switch; a second input end to the third contact switch; a third input end to the fourth contact switch; are respectively connected to the second contact switch, and the first input terminal of the fourth AND circuit is connected to the third contact switch, and the second input terminal is connected to the first contact switch. The third input terminal is connected to the second contact switch, the fourth input terminal is connected to the fourth contact switch, and the first and third AND circuits of the first and third AND circuits are connected. A second input terminal and the second and fourth input terminals are formed with opposite characteristics to each of the input terminals of the other second and fourth AND circuits, and a signal input to each of the input terminals is formed. A four-way control device, characterized in that the four-way control device performs reversal input processing and stops operation of the controlled means when each of the contact switches is operated in parallel.