JPH0587828U - Connection structure for multiple devices - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the wiring work for the wiring structure of multiple devices. [Structure] Cable insertion ports 2 and 3 respectively provided on both sides of a device 1, and a common core wire connection terminal block 4 that is provided inside the device 1 and can connect one core wires 9 and 10 of cables 7 and 8 from both sides. And the cables 7 and 8 provided inside the device 1.
The two fixed contacts 5 and 6 which connect the other core wires 12 and 13 of the above and can contact one movable piece 11 in common.
The core wires 9 and 10 are connected inside the
Is connected to the fixed contacts 5 and 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiring structure of a large number of devices for connecting a large number of control devices that need to be connected in series or in parallel.

[0002]

[Prior Art]

 When controlling a controlled device such as one relay by any of a number of devices such as switches, it is necessary to connect a number of devices such as switches in series or in parallel.

An example of a conventional wiring structure for connecting such a large number of devices will be described with reference to FIG. 4. Two fixed contacts b and c are provided inside a device a such as a switch. One movable contact d that can be commonly contacted with one fixed contact b, c is switched to a state in which it is in contact with the fixed contact b, c by an operation from the outside of the device a, or is separated from the fixed contact b, c. It is supposed to be switched to. A cable insertion port e is provided on the upper part of the device a.

In order to connect a large number of such devices a, conventionally, a pull box f is provided separately from the devices a. Cable insertion ports g, h, i are provided on both sides and a lower portion of the pull box f, and the cables j 1, k, l are inserted into the pull box f from these cable insertion ports g, h, i, respectively. Then, in the pull box f, one core wire m of the cable j and one core wire n of the cable k are connected at a connection point o, and the other core wire p of the cable j and one core wire q of the cable l are connected. and the other core wire s of the cable k and the other core wire t of the cable l are connected at a connection point u. Then, an insulating sleeve is fitted or an insulating tape is wound around the connection points o, r and u.

On the other hand, the other end of the cable l is inserted into the device a through the cable insertion port e of the device a, and the core wires q and t of the cable l are connected to the fixed contacts b and c in the device a. In this way, as shown in FIG. 4, when the movable contact d is switched to be in contact with the fixed contacts b and c, the core wire p of the cable j and the core wire s of the cable k are electrically connected. . Further, when the movable contact d is operated downward to switch the movable contact d away from the fixed contacts b and c, the core p of the cable j and the core s of the cable k are electrically disconnected.

When a large number of such devices a and pull boxes f are installed as shown in FIG. 5, and the cables j and k are inserted into the adjacent pull boxes f and similar connections are made, all devices are installed. a will be connected in series, and a controlled device v such as one relay can be controlled in series by a large number of devices a. For example, when there is a danger, which device a Even if the power is cut off, the controlled device v can be stopped. If the cable connection inside the pull box f is prohibited by the applicable standards, use the terminal box instead of the pull box f.

[0007]

[Problems to be solved by the device]

 In the above-described conventional wiring structure, one pull box or terminal box is required for each device to be continuously connected, which has a drawback that the construction cost is high. In addition, rainwater may enter the pull box or terminal box and cause trouble.Because there are many connection points for the cable core wire, and the connection points are soldering, sleeve connection, etc., check the connection points at a later date. There was a drawback that it became difficult to maintain.

The present invention eliminates such conventional drawbacks and incorporates the function of the pull box or terminal box that has been conventionally used into a device, thereby simplifying the wiring work. It is intended to provide a device wiring structure.

[0009]

[Means for Solving the Problems]

 The connection structure of multiple devices of the present invention includes a cable insertion port provided on each side of the device, a common core connection terminal block that is provided inside the device and can connect one of the core lines of the cable from both sides, and the device. And two fixed contacts which are provided inside the cable and separately connect the other core wires of the cable so that one movable piece can commonly come into contact with the movable piece.

[0010]

[Action]

 A large number of devices can be easily connected simply by connecting the core wire of the cable to the common core wire connection terminal block and fixed contacts in the equipment.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of an embodiment of the present invention, in which cable insertion ports 2 and 3 are provided on both sides of a device 1 such as a switch, and a common core wire connection is provided inside the device 1. A terminal block 4 and two fixed contacts 5 and 6 are provided.

The cable insertion ports 2 and 3 are designed so that the cables 7 and 8 can be inserted into the inside of the device 1, respectively. The common core wire connection terminal block 4 is connected to one core wire 9 of the cable 2. One core wire 10 of the cable 8 can be connected from both sides. Further, one movable piece 11 is provided for the two fixed contacts 5 and 6, and the movable piece 11 is switched to a state in which the movable piece 11 is commonly contacted with the fixed contacts 5 and 6 by an operation from outside the device 1. The fixed contacts 5 and 6 are separated from each other. The fixed contact 5 is connected to the other core wire 12 of the cable 7, and the fixed contact 6 is connected to the other core wire 13 of the cable 8.

As a result, the cables 7 and 8 are directly inserted into the device 1 through the cable insertion ports 2 and 3 without installing a pull box or a terminal box as in the conventional case, and the cable 2 is inserted inside the device 1. One core wire 9 and one core wire 10 of the cable 8 are electrically connected through the common core wire connection terminal block 4, and the other core wire 12 of the cable 7 and the other core wire 13 of the cable 8 are also directly fixed. It will be possible to connect to contacts 5 and 6.

When a large number of such devices 1 are installed as shown in FIG. 2 and the cables 7 and 8 are inserted into the adjacent devices 1 and similar wiring is performed, all the devices 1 are connected in series. As a result, the controlled device 14 such as one relay can be serially controlled by a large number of devices 1. For example, in case of danger, no matter which device 1 is cut off, the controlled device 14 can be controlled. The device 14 can be stopped.

Further, as shown in FIG. 3, when the cables 7 and 8 respectively inserted in a large number of devices 1 are connected in parallel, all the devices 1 are connected in parallel, and one controlled device such as one relay is connected. 14 can be controlled in parallel by a large number of devices 1, and the controlled device 14 can be started regardless of which device 1 is connected.

[0017]

[Effect of the device]

 Since the present invention allows the core wire of the cable to be directly connected inside the equipment without using a pull box or terminal box as in the past, wiring work is simplified and maintenance and inspection is also facilitated. The reliability of the equipment can be improved by preventing troubles such as rainwater intrusion.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a connection diagram when the connection structures of the present invention are connected in series.

FIG. 3 is a wiring diagram when the wiring structures of the present invention are connected in parallel.

FIG. 4 is a front view of a conventional connection structure.

FIG. 5 is a connection diagram when a conventional connection structure is connected in series.

[Explanation of symbols]

 1 device 2 cable insertion port 3 cable insertion port 4 common core wire connection terminal block 5 fixed contact 6 fixed contact 7 cable 8 cable 9 core wire 10 core wire 11 movable piece 12 core wire 13 core wire

Claims (1)

[Scope of utility model registration request] 1. A cable insertion port provided on each side of the device, a common core wire connection terminal block provided inside the device and capable of connecting one of the core wires of the cable from both sides, and provided inside the device. A wire connection structure for a large number of devices, characterized in that the other core wires of the cable are separately connected, and two fixed contacts that allow one movable piece to come into common contact.