JPS647313U - - Google Patents

Description

[Brief explanation of drawings]

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, the output of each of the AND circuits controlling the controlled means in different directions; 1 AND circuit connects the first input terminal to the second contact switch, the second input terminal to the first contact switch, and connects the output terminal to the second AND circuit. the third input terminal is connected to the third input terminal of the fourth AND circuit, and the second AND circuit connects the first input terminal to the fourth contact switch;
The second input terminals are connected to the third contact switch, and the output terminals are connected to the third input terminal of the first AND circuit and the third AN.
The third AND circuit is connected to the third input terminal of the D circuit, and the third AND circuit connects the first input terminal to the third contact switch and the second input terminal to the first contact switch. and an output terminal is connected to the fourth input terminal of the second AND circuit and the fourth input terminal of the fourth AND circuit, and the fourth AND circuit is connected to the fourth input terminal of the fourth AND circuit. The input end is connected to the fourth contact switch, the second input end is connected to the second contact switch, and the output end is connected to the fourth contact switch of the third AND circuit.
and the fourth input terminal of the first AND circuit, and perform simultaneous output when the outputs of the respective AND circuits do not interfere with each control of the controlled means, A four-way control device characterized in that when interference occurs, an input signal input later to the contact switch is invalidated.