JPH11242970A - Connector and connecting method for connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent erroneous connection and erroneous indications and to maintain stable quality. SOLUTION: Ring terminals 28 fitted with insulation coating are pressure- attached to lead wires (h) to (o) connected to a control device while insulated butt-type connecting pieces 29 are pressure-attached to lead wires (p), (q) connected to control wires of a switch. That is, terminal shapes of the lead wires (h) to (q) are changed according to positions to be connected with the lead wires (h) to (q). The coatings of the lead wires (h) to (q) are printed with coating indication numbers same as the numbers of contact pins to which they are connected respectively. The lead wires (h) to (q) are mounted with mark tubes 30 sign-indicating positions to be connected in a terminal block, and lead wires of a same color are mounted with mark tubes 30 different in length. Accordingly, the positions to be connected with the lead wires (h) to (q) can be distinguished at a look, and erroneous connection and erroneous indications can be prevented at the time of assembling a connector 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a lead wire in a connector.

[0002]

2. Description of the Related Art In a connector comprising a connector body and a plurality of lead wires, one end of the lead wire is connected to the connector body, and a connection terminal is crimped to the other end of the lead wire. The connection terminal is connected to a terminal block or the like of an electric device. In the vicinity of the connection terminal of the lead wire, by attaching a mark tube indicating the connection destination,
The connection terminal is prevented from being erroneously connected to the terminal block. In addition, by setting the wire colors of the plurality of lead wires to different colors, erroneous connection of the lead wires to the connector portion at the connector assembling stage is prevented.

[0003]

However, when the number of contact pins of the connector increases, the number of lead wires connected to the connector may increase, and a plurality of lead wires of the same color may be provided. In addition, for the plurality of lead wires of the same color, the mark tubes are all of the same color and the same size, and the connection terminals crimped to the other ends of the lead wires are all of the same type and the same shape. ing. For this reason, it is difficult to determine at a glance the connection destinations of the plurality of same-colored lead wires to the connector portion and the terminal block, and when connecting the lead wires to the connector portion and connecting the connection terminals to the terminal block. Cause incorrect connection or incorrect display.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a connector which can prevent erroneous connection and erroneous display and can maintain stable quality. is there.

[0005]

According to a first aspect of the present invention, there is provided a connector having a plurality of lead wires, each of which has a connection terminal attached to a tip of the lead wire. The gist is to use in form.

A second aspect of the present invention provides a method of connecting a connector, wherein a plurality of types of connection terminals are used.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the present invention is embodied in a ground fault relay used as a part of a switch control unit will be described below with reference to FIGS.

[0010] As shown in FIG. 4, an arm bar 11 is provided above the utility pole 10, and a switch 12 is fixed to the arm bar 11. A housing case 1 is provided below the telephone pole 10.
The grounding relay 14 is housed and fixed in the housing case 13. The ground fault relay 14 is connected to the switch 12 via a control line 15, and the control line 15 is constituted by lead wires a to g (not shown in FIG. 4) described later. At the time of the ground fault characteristic test, a ground fault characteristic tester 16 is connected to the ground fault relay 14 via a connection cable 17.

As shown in FIG. 3, a terminal block 18 is provided below the ground fault relay 14, and terminals A to K are provided on the terminal block 18. The connection cable 17
Are connected to a terminal block 18 via a connector 19 provided in the ground fault relay 14.

As shown in FIGS. 1 and 2, the connector 19 includes a receptacle connector 20 and a plug connector 21.
The receptacle connector 20 and the plug connector 21 constitute a connector main body. A female screw portion 20A is formed on the outer periphery of one end of the receptacle connector 20, and a plurality of recesses 2 having different sizes are formed on the inner periphery of the receptacle connector 20.
0B is formed. In addition, the plug connector 21
A plurality of convex portions 2 corresponding to the concave portions 20B
1A is formed, and an annular connection nut 21B is rotatably mounted on the outer periphery of the projection 21A.

The recess 20B and the projection 21A are aligned with each other at positions where they fit each other, so that the receptacle terminals 20 having the same contact pin numbers.
C and the plurality of plug terminals 21C of the plug connector 21 are formed so as to coincide with each other. The connection between the receptacle connector 20 and the plug connector 21 is performed by inserting the plug connector 21 into the receptacle connector 20 by matching the positions of the concave portion 20B and the convex portion 21A with each other, and connecting the connection nut 21B to the female screw portion 20A. This is done by tightening. The plug terminal 21
C is press-fitted and connected to the receptacle terminal 20C as the connection nut 21B is tightened.

On the other hand, the lead wires 22 are lead wires h to q.
It is constituted by. One end of each of the lead wires h to q is connected to the receptacle connector 20.
At the outlet 23 of the receptacle connector 20, the insulating coating 24 is attached to form a bundle.

The lead wires h to q are fixed to the lead portion 23 by being sandwiched between a plate-shaped first fixing member 25 and a second fixing member 26 via an insulating coating 24. For this reason, it is difficult for the movement of the lead wires h to q in the vertical and horizontal directions to be transmitted to the connection points (not shown) of the lead wires h to q inside the receptacle connector 20. First fixing member 25 and second fixing member 26 added to the lead wires h to q
Can be adjusted by adjusting the tightening of the bolt 27.

A round terminal 28 with a vinyl insulation coating is crimped to the other ends of the lead wires h to o, and an insulating butting type connector 29 is crimped to the other ends of the lead wires p and q. I have. The round terminal 28 with vinyl insulation coating is composed of a round connecting portion 28a formed at the tip and a cylindrical crimping portion (not shown) formed at the base end.

An insertion hole 28b is formed in the connection portion 28a, and the round terminal 28 with insulation coating is connected to the terminal block 18 by inserting a bolt through the insertion hole 28b and tightening. The core wires of the lead wires h to o are inserted into the crimping portion, and the crimping portions are caulked with a dedicated crimping tool, so that the lead wires h to o are connected to the round terminal 28 with insulation coating.

An insulation coating 28c is provided around the crimping portion 28b.
Terminal 28 with insulation coating and lead wire h
This ensures insulation at the connection points with the core wires of (1) to (4). The insulating butting type connector 29 has a configuration in which the periphery of the female connector is covered with an insulating coating 29a, and the two lead wires are connected by inserting and caulking the core wire of the lead wire. You.

Furthermore, the above-mentioned round terminal 2 with vinyl insulation coating
A mark tube 30, which is the same color as the lead wire coating and is printed with a symbol indicating a connection destination to the terminal block 18, is mounted near the connector 8 and the insulating butting type connector 29.

The mark tube 30 is a heat-shrinkable tube made of rubber and has a slightly larger diameter than the lead wires h to q. After being attached to the lead wires h to q, the mark tube 30 contracts by applying hot air or the like, and comes into close contact with the outer periphery of the lead wires h to q. The mark tube 30 is mounted before the vinyl-insulated round terminal 28 and the insulating butting type connector 29 are crimped to the lead wires h to q.

When there are a plurality of leads of the same color, mark tubes 30 of different lengths are mounted. For this reason, the connection destinations of the plurality of lead wires having the same color can be visually distinguished, and the connection destinations of the lead wires can be easily distinguished. Further, as shown in FIG.
The same coating indication number as the contact pin number of the receptacle terminal 20C of the receptacle connector 20 of the connection destination is printed on q to prevent erroneous connection when the lead wires h to q are connected to the receptacle connector 20. I have.

As shown in FIG. 3, among the lead wires a to g constituting the control wire 15, the lead wires a to e are connected to the terminal block 18.
, Terminal A, terminal B, terminal G, terminal H and terminal J, respectively. Further, among the terminals of the lead wires h to q constituting the lead wire 22, the lead wires h to o are terminals C to I.
And the terminal K. Then, the lead wires p and q of the lead wire 22 and the lead wires f and g of the control wire 15 are provided.
Are caulked to each other. The control power lines r and s are connected to the terminals E and F, respectively, by tightening.

As described above, the lead h of the lead 22
To q are divided into a terminal block 18 and a control line 15. The lead wires h to be connected to the terminal block 18
The o-shaped round terminals 23 with vinyl insulation coating are crimped, and the lead wires p and q connected to the lead wires f and g of the control wire 15 are crimped with insulating butting type connectors 24 with windows, respectively. . That is, by changing the terminal shape of the lead wire depending on the connection destination, the connection destination can be determined at a glance, and erroneous connection is prevented.

Normally (at the time of the non-grounding characteristic test), since the connector 19 is not used, the plug connector 21 is connected to the receptacle connector 20. When a ground fault characteristic test is performed, the plug connector 21 is removed, and a connection plug connector (not shown) at the end of the connection cable 17 of the ground fault characteristic tester 16 is connected to the receptacle connector 20. That is, the plug connector 21 is compatible with the connection plug connector of the connection cable 17.

As shown in FIG. 1, connection and disconnection of the receptacle connector 20 and the plug connector 21 can be easily performed by aligning the white mark 31 displayed on the surface of the receptacle connector 20 and the plug connector 21. Further, the receptacle connector 20 and the plug connector 21 are connected by a black nylon string 32, and the string connector 32 prevents the plug connector 21 from being lost at the time of attachment / detachment work. The length of the cord 32 is set to a length that allows easy attachment and detachment work of the receptacle connector 20 and the plug connector 21,
In the present embodiment, it is set to 18 cm.

Therefore, according to the present embodiment, the following effects can be obtained. A round terminal 28 with insulation cover is crimped to the control device connection side lead wire (h to o), and an insulation butt type connector 29 is crimped to the switch connection side lead wire (p, q). I have. That is, the terminal shape of the lead wire is changed depending on the connection destination of the lead wires h to q. Therefore, lead wires h to q
Can be determined at a glance, and erroneous connection of the lead wires h to q to the control line 15 and the terminal block 18 can be prevented.

The same coating indication numbers as the contact pin numbers to be connected are printed on the coatings of the lead wires h to q, respectively, and the same color as the lead wire coating indicating the connection destination to the terminal block 18 by symbol. Mark tube 3
0 is attached. When there are a plurality of coatings of the same color, the connection destination can be distinguished by changing the length of the mark tube 30. Therefore, erroneous connection and erroneous display can be easily prevented at the time of assembling the connector 19 and at the time of connecting the lead wires h to q to the terminal block 18.

The receptacle connector 20 and the plug connector 21 are connected by a rope 27.
Therefore, it is possible to prevent the plug connector 21 from being lost at the time of the attaching / detaching operation.

A white mark 31 for positioning the concave portion 20B and the convex portion 21A is provided on the outer peripheral surfaces of the receptacle connector 20 and the plug connector 21. For this reason, the receptacle connector 20 and the plug connector 21 can be easily connected by aligning the white marks 31 with each other. Also, white mark 3 for positioning
1 is also provided on a plug connector (not shown) provided at the end of the connection cable 17 of the ground fault characteristic tester 16,
The connection can be quickly made so as not to be erroneously connected to each receptacle terminal.

The above embodiment may be modified as follows. In the present embodiment, the round terminals 28 with vinyl insulation coating or the insulating butt-type connectors 29 are attached to the lead wires a to s. However, for example, connection terminals of different shapes such as hook terminals are used. May be. Even in this case, the lead wire a
To s can be connected to the terminal block 18.

In the present embodiment, the round terminal 28 with vinyl insulation coating and the insulating butting type connector 29 are crimped with lead wires, but they may be connected by soldering or the like. Even in this case, the connection terminal can be attached to the lead wire.

In the present embodiment, the connection destination of the lead wire to the terminal block is printed on the mark tube 30 and displayed by attaching it to the lead wire, but the connection destination is printed on a seal label or the like. It may be displayed by attaching it to a lead wire. Even in this case, the connection destination of the lead wire can be clarified.

In the present embodiment, the lead wires h to q
In order to prevent erroneous connection at the time of assembling the connector 19, by changing the line colors of the lead wires h to
The information may be displayed on at least a part of q.
In this way, a larger number of leads can be distinguished by combining colors and patterns.

In the present embodiment, the positioning mark 31 at the time of connector connection is white, but may be arbitrarily changed as long as it can be distinguished from the color of the connector 19 itself. Even in this case, the receptacle connector 20 and the plug connector 21
It can be positioned at the time of connection work with the device.

The positioning at the time of connector connection in the present embodiment is performed by aligning the white mark 31 provided on the outer periphery of the receptacle connector 20 and the plug connector 21, but instead of the white mark 31, the receptacle connector 20 and the plug are used. A positioning projection or the like may be formed on the outer periphery of the connector 21 and the positioning may be performed by matching them. Also in this case, when the receptacle connector 20 and the plug connector 21 are connected, the positioning can be performed, and the connector connection operation can be simplified.

In the present embodiment, the receptacle connector 20 and the plug connector 21 are connected using the black nylon string 32, but the color of the string 32 may be arbitrarily changed. The material of the rope 31 may be arbitrarily changed as long as it has an insulating property. Even in such a case, the receptacle connector 20 and the plug connector 21 are connected to each other, so that the plug connector 21 can be prevented from being lost when the receptacle connector 20 and the plug connector 21 are attached or detached.

In this embodiment, the length of the cord 32 is set to 18 cm.
The length may be arbitrarily changed as long as it is easy to attach / detach to / from the plug connector 21. Even in this case, loss of the plug connector 21 can be prevented.

Next, technical ideas other than the claimed invention which can be grasped from the embodiment will be described below together with their effects. 3. The connector according to claim 1, wherein a coating indication number corresponding to a contact pin number of a receptacle terminal to be connected is printed on the lead wire. By doing so, it is possible to prevent erroneous connection at the time of assembling the connector.

The connector according to claim 1, wherein a mark tube on which a terminal number of a terminal block to be connected is printed is attached to the lead wire. This can prevent erroneous connection to the terminal block.

The connector according to claim 1 or 2, wherein mark tubes of different lengths are respectively attached to the plurality of same-colored lead wires. Even in this case, erroneous connection or erroneous display can be prevented.

[0039]

According to the present invention, erroneous connection and erroneous display can be prevented, and connection work can be performed quickly and stably.

[Brief description of the drawings]

FIG. 1A is a front view of a connector according to an embodiment. FIG. 2B is a plan view of FIG.

FIG. 2A is a view taken along line 1-1 in FIG. 1A. (B) is a 2-2 line arrow in FIG. 1 (b).
(C) is a principal part enlarged view which shows the example of printing of the coating display number in a lead wire.

FIG. 3 is a view showing the usage status of the connector according to the embodiment;

FIG. 4 is an explanatory diagram showing a mounting state of a relay on a utility pole.

[Explanation of symbols]

19 ... connector, 20 ... receptacle connector, 21 ...
Plug connector, 22: lead wire, 23: round terminal with vinyl insulation coating, 24: connector with insulated butted window, 25: mark tube, h to q: lead wire.

Claims (2)

[Claims] 1. A connector having a plurality of lead wires and a connection terminal attached to a tip of the lead wire, wherein the connection terminal is used in a plurality of types. 2. A method for connecting a connector, the method comprising using a plurality of types of connection terminals.