Wiring connection unit

Abstract

To provide a wiring connection unit that can change both a coil terminal and an auxiliary terminal to a push-in structure by simply adding one unit.SOLUTION: A wiring connection unit 15 includes connectors 23 and 24, a wiring 25, and a wiring 26. The connectors 23 and 24 are capable of holding an inserted electric wire 44 by means of a spring terminal 42. One end of the wiring 25 is connected to the connector 23, and the other end is connected to the coil terminal 13 of an electromagnetic contactor 11. One end of the wiring 26 is connected to the connector 24, and the other end is connected to an auxiliary terminal 14 of the electromagnetic contactor 11 or the auxiliary terminal 14 of the auxiliary contact unit 12 attached to the electromagnetic contactor 11.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a wiring connection unit. [Background technology]

[0002] Patent Document 1 discloses the structure of an auxiliary contact unit attached to an electromagnetic contactor. The coil terminal of the electromagnetic contactor and the auxiliary terminal of the auxiliary contact unit are configured as screw terminals. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2022 / 085219 Summary of the Invention [Problem to be solved by the invention]

[0004] There are wiring connection devices with a push-in structure that allow connections to be made simply by inserting the wires, and adding these to screw terminals can improve the efficiency of connection work. To make both the coil terminals and auxiliary terminals push-in type, it was necessary to add separate wiring connection devices. An object of the present invention is to provide a wiring connection unit that can change both the coil terminals and the auxiliary terminals to a push-in structure by simply adding one unit. [Means for solving the problem]

[0005] A wiring connection unit according to one aspect of the present invention includes a first connector, a second connector, a first wiring, and a second wiring. The first connector and the second connector are capable of holding an inserted electric wire by a spring terminal. One end of the first wiring is connected to the first connector, and the other end is connected to a coil terminal of an electromagnetic contactor. One end of the second wiring is connected to the second connector, and the other end is connected to an auxiliary terminal of the electromagnetic contactor or an auxiliary terminal of an auxiliary contact unit attached to the electromagnetic contactor. Effect of the Invention

[0006] According to the present invention, both the coil terminal and the auxiliary terminal can be changed to the push-in structure simply by adding one unit. [Brief description of the drawings]

[0007] [Figure 1] 2 is a diagram showing an electromagnetic contactor 11 and an auxiliary contact unit 12. FIG. [Diagram 2] FIG. 2 is a diagram showing a wiring connection unit 15. [Diagram 3] FIG. 2 is a diagram showing a wiring connection unit 15. [Figure 4] 2 is a diagram showing the inside of a wiring connection unit 15. FIG. [Diagram 5] FIG. 2 is a diagram showing a connector 23. [Figure 6] 1A to 1C are diagrams showing an example of how the wiring connection unit 15 is attached. [Figure 7] 1A to 1C are diagrams showing an example of how the wiring connection unit 15 is attached. [Figure 8] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that each drawing is a schematic view and may differ from the actual one. In addition, the following embodiment illustrates an apparatus and method for embodying the technical idea of ​​the present invention, and does not specify the configuration as described below. In other words, the technical idea of ​​the present invention can be modified in various ways within the technical scope described in the claims.

[0009] <<Embodiment>> "composition" In the following description, the three mutually orthogonal directions will be referred to as a width direction, a length direction, and a depth direction for the sake of convenience. FIG. 1 is a diagram showing an electromagnetic contactor 11 and an auxiliary contact unit 12. As shown in FIG. Here, the electromagnetic contactor 11 and the auxiliary contact unit 12 are shown as viewed from the front in the depth direction. The electromagnetic contactor 11 is provided with a pair of coil terminals 13 on one side in the vertical direction. The coil terminals 13 are screw terminals and are lined up along the width direction. The auxiliary contact unit 12 is attached to the side of the electromagnetic contactor 11, and is provided with two pairs of auxiliary terminals 14. The auxiliary terminals 14 are screw terminals and are lined up along the vertical direction, with the inner terminals paired together and the outer terminals paired together in the vertical direction.

[0010] FIG. 2 is a diagram showing the wiring connection unit 15. As shown in FIG. Here, the wiring connection unit 15 is shown as seen from the front in the depth direction. FIG. 3 is a diagram showing the wiring connection unit 15. As shown in FIG. Here, the wiring connection unit 15 is shown as viewed from one side in the vertical direction, one side in the width direction, and one side in the depth direction. The wiring connection unit 15 includes a case 21, a case 22, a connector 23 (first connector), a connector 24 (second connector), a wiring 25 (first wiring), and a wiring 26 (second wiring). The case 21 and the case 22 are resin housings that can be separated in the width direction. The case 21 is formed with a hook 31 that can be attached to a side surface of the electromagnetic contactor 11 or a side surface of the auxiliary contact unit 12 by snap fitting.

[0011] Connectors 23 and 24 are push-in connectors capable of holding an inserted electric wire. Connectors 23 and 24 are exposed from the front in the depth direction of cases 21 and 22, and are arranged in a row along the vertical direction. Connector 23 is provided on one side in the vertical direction, and connectors 24 are provided one each in the center and the other side in the vertical direction. The wiring 25 is a lead wire having one end connected to the connector 23 inside the case 21 and the case 22 and the other end drawn out to the outside of the case 21 and the case 22 and connected to the coil terminal 13 . The wires 26 are lead wires having one end connected to the connectors 24 inside the cases 21 and 22 and the other end drawn out to the outside of the cases 21 and 22 and connected to the auxiliary terminals 14. Therefore, there are two sets of wires 26.

[0012] FIG. 4 is a diagram showing the inside of the wiring connection unit 15. As shown in FIG. Here, the wiring connection unit 15 with the case 22 removed is shown as viewed from one side in the vertical direction, one side in the width direction, and one side in the depth direction. The cases 21 and 22 are hollow, and bosses protruding in the width direction are fitted together and fastened by screws. The cases 21 and 22 expose the connectors 23 and 24 from three openings formed in the front wall in the depth direction. The connectors 23 and 24 each have two wire insertion holes 41 aligned vertically. A circuit board 32 is fixed to the case 21. The circuit board 32 connects the connector 23 to the wiring 25 and connects the connector 24 to the wiring 26. The cases 21 and 22 have a pair of wirings 25 and a pair of wirings 26 drawn out from an opening formed in one vertical wall, and a pair of wirings 26 drawn out from an opening formed in the other vertical wall. A diode 33 for absorbing surge voltage of the coil in the electromagnetic contactor 11 is mounted on the circuit board 32 .

[0013] FIG. 5 is a diagram showing the connector 23. As shown in FIG. Here, a cross section of the connector 23 passing through the center of the electric wire insertion hole 41 in the width direction and the depth direction is shown as viewed from one vertical direction. Inside the connector 23, one spring terminal 42 is provided for each electric wire insertion hole 41. The spring terminal 42 is made of a conductive metal and is formed of a pair of spring pieces facing each other, and the terminal 43 protruding in the depth direction is connected to the wiring 25 via the circuit board 32. (a) in the figure shows a state before the ferrule terminal 45 crimped to the electric wire 44 is inserted into the electric wire insertion hole 41. (b) in the figure shows a state after the ferrule terminal 45 is inserted into the electric wire insertion hole 41. When the collar comes into contact with the edge of the electric wire insertion hole 41 and the insertion is completed, the ferrule terminal 45 is held by the spring terminal 42. Connector 24 has a similar structure to connector 23, and therefore a description thereof will be omitted.

[0014] FIG. 6 is a diagram showing an example of how the wiring connection unit 15 is attached. Here, the electromagnetic contactor 11 and the auxiliary contact unit 12 to which the wiring connection unit 15 is attached are shown as viewed from the front in the depth direction. FIG. 7 is a diagram showing an example of how the wiring connection unit 15 is attached. Here, the electromagnetic contactor 11 and the auxiliary contact unit 12 to which the wiring connection unit 15 is attached are shown as viewed from one side in the vertical direction, one side in the width direction, and one side in the depth direction. The wiring connection unit 15 is attached to the side of the auxiliary contact unit 12, and a pair of wirings 25 is connected to the coil terminal 13, and two pairs of wirings 26 are connected to the auxiliary terminal 14.

[0015] <Action and Effect> Next, main effects of the embodiment will be described. The wiring connection unit 15 includes a connector 23, a connector 24, a wiring 25, and a wiring 26. The connectors 23 and 24 can hold an inserted electric wire 44 by a spring terminal 42. One end of the wiring 25 is connected to the connector 23, and the other end is connected to the coil terminal 13 of the electromagnetic contactor 11. One end of the wiring 26 is connected to the connector 24, and the other end is connected to the auxiliary terminal 14 of the auxiliary contact unit 12 attached to the electromagnetic contactor 11. If the electromagnetic contactor 11 includes an auxiliary terminal, the other end of the wiring 26 may be connected to the auxiliary terminal of the electromagnetic contactor 11. In this way, both the coil terminal 13 and the auxiliary terminal 14 can be changed to a push-in structure by simply adding one wiring connection unit 15.

[0016] The wiring connection unit 15 includes a case 21 and a case 22 to which a connector 23 and a connector 24 are fixed. One end of the wiring 25 and a wiring 26 is connected to the connector 23 and the connector 24 inside the case 21 and the case 22, and the other end is drawn out from the case 21 and the case 22. By forming the wiring connection unit 15 as a unit in this manner, handling is made easier and workability is improved. The wiring connection unit 15 is attached to a side surface of the electromagnetic contactor 11 or a side surface of the auxiliary contact unit 12. This makes it possible to prevent the electromagnetic contactor 11 and the auxiliary contact unit 12 from becoming large in the vertical direction. The wiring connection unit 15 includes a circuit board 32. The circuit board 32 connects the connector 23 to the wiring 25, and connects the connector 24 to the wiring 26. A diode 33 that absorbs a surge voltage of the coil in the electromagnetic contactor 11 is mounted on the circuit board 32. In this way, by consolidating the functions in the wiring connection unit 15, there is no need to provide a separate product for absorbing the coil surge voltage.

[0017] Next, a comparative example will be described. Here, a configuration in which wiring connection devices are added individually to both the coil terminal 13 and the auxiliary terminal 14 will be described as a comparative example. FIG. 8 is a diagram showing a comparative example. Here, the electromagnetic contactor 11 and the auxiliary contact unit 12 are shown as viewed from the front in the depth direction. A wiring connection device 51 is added to the coil terminal 13, and a wiring connection device 52 is added to the auxiliary terminal 14. In this way, to give push-in structures to both the coil terminal 13 and the auxiliary terminal 14, it was necessary to add the wiring connection devices 51 and 52 separately. Also, the electromagnetic contactor 11 and the auxiliary contact unit 12 were enlarged in the vertical direction.

[0018] <<Variation>> In the embodiment, a configuration in which the wiring 26 is connected to the auxiliary terminal 14 of the auxiliary contact unit 12 has been described, but the present invention is not limited to this. In other words, if the electromagnetic contactor has an auxiliary terminal, the wiring 26 may be connected to the auxiliary terminal of the electromagnetic contactor. In the embodiment, the configuration in which the auxiliary contact unit 12 and the wiring connection unit 15 are attached to one side of the width direction of the electromagnetic contactor 11 has been described, but the present invention is not limited to this. That is, the auxiliary contact unit 12 and the wiring connection unit 15 may be attached to the other side of the width direction of the electromagnetic contactor 11. In this case, the direction in which the wiring connection unit 15 is attached can be reversed by switching the opening of the case 21 through which the wiring 25 is drawn out.

[0019] Although the above description has been given with reference to a limited number of embodiments, the scope of the invention is not limited thereto, and modifications of the embodiments based on the above disclosure will be obvious to those skilled in the art. [Explanation of symbols]

[0020] 11...electromagnetic contactor, 12...auxiliary contact unit, 13...coil terminal, 14...auxiliary terminal, 15...wiring connection unit, 21...case, 22...case, 23...connector, 24...connector, 25...wiring, 26...wiring, 31...hook, 32...circuit board, 33...diode, 41...wire insertion hole, 42...spring terminal, 43...terminal, 44...wire, 45...ferrule terminal, 51...wiring connection device, 52...wiring connection device

Claims

1. a first connector and a second connector capable of holding inserted electric wires by spring terminals; a first wire having one end connected to the first connector and the other end connected to a coil terminal of an electromagnetic contactor; a second wiring having one end connected to the second connector and the other end connected to an auxiliary terminal of the electromagnetic contactor or an auxiliary terminal of an auxiliary contact unit attached to the electromagnetic contactor.

2. a case to which the first connector and the second connector are fixed, The wiring connection unit according to claim 1, characterized in that one end of the first wiring and the second wiring are connected to the first connector and the second connector inside the case, and the other end is pulled out from the case.

3. 2. The wiring connection unit according to claim 1, wherein the wiring connection unit is attached to a side surface of the electromagnetic contactor or a side surface of the auxiliary contact unit.

4. a circuit board that connects the first connector and the first wiring and that connects the second connector and the second wiring, 2. The wiring connection unit according to claim 1, wherein a diode for absorbing a surge voltage of a coil in the electromagnetic contactor is mounted on the circuit board.

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