JPS6314381Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a jig and tool for connecting a wire pressure welding type connector.

A conventional wire connection jig will be explained with reference to FIGS. 1 to 4.

Fig. 1 is an overall perspective view, Fig. 2 is an enlarged perspective view of the press-fit head, Fig. 3 is an enlarged perspective view of the state in which electric wires are connected to the wire pressure connection type connector, and Fig. 4 is a longitudinal section showing the state of connection and cutting. This is a top view, and in the drawing, 1 is a main body of the wiring jig, 2 is a handle, and 3 is a press-fit head, which is designed to lower together when the handle 2 is lowered. Reference numeral 4 denotes a cable sorting stand, which has a connector accommodating section 5. Reference numeral 6 designates a wire pressure connection type connector body (hereinafter referred to as the connector body), 7 a multicore cable, 8 an electric wire, and 9 a wire alignment groove, into which the electric wire 8 is attached.

A cutting blade 10 for cutting the extra length of the electric wire 8a of the electric wire 8 is fixed to the press-fitting head 3 with a screw or the like, and a positioning pin 11 for positioning with the cable arrangement stand 4 is provided. It is attached to a shaft 12 provided on the jig main body 1.

The connector main body 6 is made of synthetic resin, and has a press-fitting wire contact 13 on the top surface, and the wire 8 is held down by a holding plate 14.
A press-contact protrusion 15 for pressing the electric wire 8 is formed on the holder.

To explain the connection work using the above-mentioned connection jig, first, the connector body 6 is inserted into the connector accommodating portion 5, and the electric wires 8 are arranged on the pressure welding electric wire contactor 13. In this state, when the handle 2 is pushed down with the presser plate 14 covered, a uniform load is applied to the upper surface of the presser plate 14 by the press-fit head 3, and the electric wire 8 is pressed by the pressure welding protrusion 15 provided on the presser plate 14. At the same time as the wire is connected to the insulation displacement wire contact 13,
The extra length electric wire 8a is cut by the cutting blade 10 provided on the press-fitting head 3.

As explained above, according to the technology, the cutting width Δx of the extra length electric wire 8a shown in FIG. and the position of the press-fitting head 3 will change.

Recently, as the density of devices using connectors has increased, the dimensional tolerances of the parts forming the connector have become tighter, and as shown in FIG. This has become important in the structural design of connectors.
Therefore, in order to keep the amount of variation in the cutting width Δx of the extra length electric wire 8a small and constant, it is necessary to strictly control the fitting dimensions of the connector and the connection jig. In addition, connecting and cutting connectors with large wire diameters and large numbers of terminals requires a large pressure force, which shortens the durability of the wiring jigs and tools. It requires the preparation of tools, and if it generates a large force, it is inconvenient to carry, and the wiring work area is limited.

The purpose of this invention is to solve the above-mentioned drawbacks by separating the wire pressure welding process and the cutting process, reducing the load required for the wiring jig, and tightening the dimensional tolerances of the connector and the wiring jig. The present invention is characterized in that it is possible to cut extra length electric wires with a constant cutting margin size without any management.

An embodiment of the present invention will be described below with reference to FIGS. 5 to 7. Figure 5 is a perspective view of the extra length electric wire cutting jig and cable arrangement stand, Figure 6 is a sectional view with the cutting jig placed on it, and Figure 7 is a cross sectional view showing the state under pressure with the press-fit head. The wiring jig main body 1, the connector main body 6, the presser plate 14, etc. are the same as those in the prior art, so their explanation will be omitted. In the drawing, 16 is a cutting jig for extra length electric wire, and a cutting blade 17
and a positioning pin 18 are provided for the press-fit head 1.
The press-fitting head 19 is a single unit supported by a shaft 12 provided in the main body 1 of the wiring jig and tool.

Reference numeral 4 denotes a cable sorting stand similar to the conventional one, to which a connector accommodating portion 20 is fixed, and a positioning hole 21 into which the positioning pin 18 is fitted is provided in the connector accommodating portion 20. This positioning hole 21 is provided with a spring 22 that presses the cutting jig 16 in the direction of the arrow via the positioning pin 18.

Next, the operation of the above configuration will be explained. The wiring work process and the cutting process are separated, and the wiring work can be performed by placing the connector main body 6 in the connector accommodating part 20 in the same manner as before.
is inserted, and the electric wires 8 are arranged on the pressure welding electric wire contact 13. In this state, as shown in FIG. 6, the positioning pin 18 of the cutting jig 16 is fitted into the positioning hole 21 provided in the connector accommodating portion 20, and the connector body 6 is placed over the connector body 6. In this state, there is a gap of Δx between the cutting blade 17 and the connector body 6 as shown in FIG.
The positioning pin 18 provided at Therefore, the cutting position of the cutting blade 17 also moves and comes into contact with the side surface of the connector body 6. Then, when further pressure is applied, the extra length electric wire 8a is cut by the cutting blade 17.

At this time, if the upper surface A-A of the cutting jig 16 is aligned with the upper surface B-B of the presser plate 14, sufficient pressing force can be obtained, and the cutting blade receiver provided in the connector accommodating portion 20 can be Providing rubber or a spring as a damper on the surface 23 prevents unnecessary force from being applied to the cutting blade 17, improving durability.

According to the present invention having the above-described structure and operation, by separating the press-fit head and the cutting jig, the pressing force of the press-fit head is reduced, and the same wiring connection method can be applied even when the wire diameter changes or the number of terminals changes. This can be done with tools, making it convenient to carry and allowing wiring work to be done anywhere.

In addition, the spring provided in the positioning hole of the connector accommodating part moves the cutting blade provided on the cutting tool to the side of the connector body during cutting, making it possible to cut without leaving excess wire length. be.

Therefore, by using the above-mentioned wiring jig, there is no need to strictly control the dimensions of the connector body and the dimensions of the jig, and the same wiring jig can be used for different types of wire diameters and increases or decreases in the number of terminals. This improves work efficiency.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional wiring jig, Fig. 2 is a perspective view of a conventional press-fit head, Fig. 3 is an enlarged perspective view of a state in which electric wires are connected to the connector body, and Fig. 4 is a perspective view of a conventional connection jig. Vertical sectional view showing the cutting state, No. 5
The figures show an embodiment of the present invention; FIG. 6 is a perspective view of an extra length electric wire cutting jig and a cable arrangement table; FIG. 6 is a sectional view with the cutting jig mounted; and FIG. It is a sectional view showing a state where it has joined. 6...Wire pressure connection type connector body, 16...
. . . Cutting jig and tool, 17 . . . Cutting blade, 18 . . . Positioning pin, 19 . . . Press-fit head, 20 .

Claims (1)

[Scope of utility model registration request] It has a press-fit head that moves in the pressure direction to press-fit the wire to the wire pressure-connection connector body, a cutting blade and a positioning pin, and cuts the extra length of the wire when the press-fit head comes into contact and pressurizes it. It has a cutting jig and a positioning hole provided with a spring that fits a positioning pin of the cutting jig and presses the cutting jig in one direction via the positioning pin, and houses a wire pressure welding type connector body. A wiring jig characterized by comprising a connector accommodating part.