JPS6260773B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention provides a 3-signal switching device that can connect 3-signal lines on the same pattern and connect output terminals in combination when the number of used three input terminals in a predetermined arrangement changes, such as in a combination of wall switches. The purpose is to:
It enables combinational connections with the minimum number of switches, and the sum of the number of input terminals and jumper wires is equal to the number of signals, which eliminates the risk of making mistakes during the mounting process, and the switch switching display and output terminal display can be clearly matched. It's about doing. Connection of input terminals a, b, c and output terminals A, B, C when the number of inputs changes between three input terminals a, b, c and three output terminals A, B, C The combinations are as shown in Table 1.

[Table] Conventionally, when performing such switching, connections were made as shown in Figure 1. In Figure 1 a, the number of inputs is 1.
In the case of 1 circuit, 3-contact rotary switch 1 is used for switching, and the number of inputs in Figure 1b is 2.
In this case, switching is performed using a two-circuit, three-contact rotary switch 2. In Figure 1c, the number of inputs is 3.
In this case, there is no need for switching. The connection patterns of these differ depending on the number of inputs. Therefore, if three types of inputs are connected on the same pattern, this can be done by using a three-circuit, three-contact rotary switch 3 as shown in FIG. However, this device has the drawbacks of an extremely complicated structure, many unnecessary contacts, and a complicated display when switching. The present invention has been made in view of this point, and will be explained in detail below with reference to Examples. The present invention has three input terminals and three output terminals, and depending on the number of inputs, switching as shown in Table 1 above is performed on the same pattern. This is shown below. In Fig. 3, a, b, and c are input terminals, and A, B, and C are output terminals, and single-pole, single-throw switches S ₁ , S ₂ , and S ₃ are provided between these terminals, respectively. An auxiliary switch is connected between the third input terminal C and the second output terminal B.
Set up S ₄ . J ₁ and J ₂ are jumper wires that can be connected between the first input terminal a and the second input terminal b and between the second input terminal b and the third input terminal c, Connections are made during the implementation process depending on the required number of inputs. When making the connection combinations shown in Table 1 above using the switching device shown in Figure 3,
By setting the switches S ₁ to S ₃ , the auxiliary switch S ₄ and the jumper wires J ₁ and J ₂ to the states shown in Table 2 below, connections can be made according to the number of inputs.

[Table] Therefore, by closing switches S ₁ , S ₂ , S ₃ and auxiliary switch S ₄ in the cases indicated by the O marks in the above table, seven combinations of connections can be made on the same pattern. In addition, the switch switching display and the output terminal display can be matched and made clear. FIG. 4 shows another embodiment of the present invention, in which the auxiliary switch
S ₄ is connected between the first input terminal a and the second output terminal B, and the switches S ₁ to S ₃ , auxiliary switch S ₄ and jumper wires J ₁ and J ₂ are connected as shown in Table 3 below. By setting the state to , connections can be made in the same manner according to the number of inputs.

[Table] As described above, the present invention provides a switch between three input terminals and three output terminals, and connects one of the first input terminal and the third input terminal to the second output terminal. An auxiliary switch is provided between the switches, and jumper wires can be connected between the first input terminal and the second input terminal, and between the second input terminal and the third input terminal, so there are 7 different connections with 4 switches. Moreover, as shown in Tables 2 and 3, the sum of the number of input terminals used and the jumper wire is equal to the number of signals (=3), so the number of input terminals used can be If is determined,
The number of jumper wires is determined automatically, which helps prevent incorrect wiring during mounting. Further, the switching display of the switch and the display of the output terminal can be made to match each other to provide a clear display.

[Brief explanation of the drawing]

1A to 1C are connection diagrams of an example of a conventional three-signal switching device, FIG. 2 is a connection diagram of another example of the same as above, FIG. 3 is a connection diagram of an embodiment of the present invention, and FIG. FIG. 3 is a connection diagram of another embodiment of the present invention. a, b, c...input terminals, A, B, C...output terminals, S1 _{, S2} , _S3 ...switches, _S4 ...auxiliary switches, _J1 , _J2 ...jumper wires.

Claims (1)

[Claims] 1 has 3 input terminals and 3 output terminals,
3. When one input terminal is used, when the first and third input terminals are used, and when the first to third input terminals are used, the input terminal and the output terminal can be switched. In the signal switching device, a switch is provided between three input terminals and three output terminals, and a switch is provided between one of the first input terminal and the third input terminal and the second output terminal. An auxiliary switch is provided, and the
A three-signal switching device characterized in that jumper wires can be connected between the input terminal and the second input terminal and between the second input terminal and the third input terminal.