JPS6334216Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a wire connector used, for example, as a power supply terminal, and relates to the configuration of a relay terminal that is inserted into the connector body.

[Technical background of the invention and its problems]

As shown in Fig. 1, a conventional electric wire connector such as a power supply terminal inserts a die-cast relay terminal 4 having a wire insertion hole 2 and a screw hole 3 into a wire connection hole formed in a connector body 1. Wire a from both ends,
wires a and b are connected to the relay terminal 4 by inserting wire b and screwing the tightening screw 5 through the screw hole 3.
Since it is die-cast, it is not easy to manufacture and requires means for tapping the screw hole 3. Furthermore, if the relay terminal 4 is bent into a U-shape as shown in Fig. 2, the U-shaped relay terminal 4 will expand when the tightening screw 5 is screwed in to tightly tighten the wires a and b. The drawback was that it could not be tightened strongly.

[Purpose of invention]

In view of the above-mentioned problems, the present invention has been developed by bending a plate-shaped conductor into a hollow cylinder shape and overlapping the bent ends of the relay terminal to be inserted into the wire connection cylinder formed in the main body of the electrically insulating connector. an outer piece and an inner piece are formed; the outer piece has a through hole facing the screw insertion hole of the wire connection cylinder; the inner piece has a burring hole into which a tightening screw is screwed; By engaging the flange of the hole with the through hole, a relay terminal can be easily formed by pressing a plate-shaped conductor, etc., and the outer and inner pieces overlapped with each other can be easily formed by the flange of the burring hole. This prevents the relay terminal from expanding even when the electric wire that is engaged and inserted into the relay terminal is strongly tightened with a tightening screw.

[Summary of the idea]

The present invention has an electrically insulating connector main body in which a wire connection cylinder is formed, and an inner piece and an outer piece in which a plate-shaped conductor is bent into a hollow cylinder shape and the bent ends are overlapped with each other, and the wire connection It consists of a relay terminal that is fitted into a cylindrical part, a through hole formed in the outer piece of the relay terminal faces a screw insertion hole formed in the wire connection cylinder part, and a tightening hole formed in the inner piece. By engaging the protruding edge of the burring hole into which the screw is screwed into the through hole of the outer piece, the relay terminal is prevented from expanding due to the tightening of the tightening screw when connecting the electric wire.

[Embodiment of the invention] An embodiment of the invention will be described with reference to FIGS. 3 to 7 of the accompanying drawings.

Reference numeral 1 denotes a connector body made of synthetic resin, in which a wire connection tube portion 7 is formed on a substrate 6 and has a rectangular cross section and is open at both ends in the axial direction. A pair of screw insertion holes 8, 8 are formed at intervals in the axial direction of the circumferential surface of the electric wire connection tube 7, and around the screw insertion holes 8, 8, the circumferential surface of the connection tube 7 is formed. Guide tubes 9, 9 are formed to protrude.

Reference numeral 10 denotes a relay terminal, in which a wire insertion hole 11 is formed by bending a plate-shaped conductor into a hollow cylinder shape with a square cross section, and both ends in the bending direction are overlapped with each other to form an outer piece 12 and an inner piece 13. is formed. The outer piece 12 has a pair of through holes 14 and 1 facing the screw insertion holes 8 and 8 of the wire connection cylinder part 7.
4 is formed in the inner piece 13, and the through hole 1 is formed in the inner piece 13.
Burring holes 15, 15 into which the tightening screws 5, 5 are screwed are formed facing the holes 4, 14, and the projecting edges 16 of the burring holes 15 are connected to the through holes 14, respectively.
is engaged with. Furthermore, the end of the outer piece 12 at one end of the relay terminal 10 is engaged with a step 17 formed at one end of the wire connection tube 7, and the base is lowered from the peripheral surface of the wire insertion hole 11 at the other end in contact with the substrate 6. A terminal piece 18 is protruded in a fork-like manner, and this terminal piece 18 is engaged with a notch 19 formed at one end of the wire connection tube 7, and is further inserted from the middle of the outer peripheral surface of the relay terminal 10. A protruding engagement piece 20 is engaged with an engagement hole 21 opened in the circumferential surface of the wire connection cylinder section 7.

Next, the operation of the above embodiment will be explained.

When the relay terminal 10 is inserted into one end of the wire connection cylinder part 7 of the connector body 1 and its tip is engaged with the engagement step part 17, the through holes 14, 14 on the circumferential surface are connected to the screw insertion holes of the connection cylinder part 7, respectively. 8, 8, the engagement piece 20 engages with the engagement hole 21, the terminal piece 18 engages with the notch 19, and the relay terminal 10 is fitted and fixed to the wire connection cylinder part 7.

Next, insert the wires a and b from both ends of the wire insertion hole 11 of the relay terminal 10, and insert the tightening screws 5, 5 inserted through the guide tubes 9, 9 through the screw insertion holes 8, 8, through hole 14,
The wires a and b are connected to the relay terminal 10 by screwing them into the burring holes 15 and 15 through the wires 14 by self-tapping and crimping the wires a and b into the wire insertion hole 11 at their tips. Note that during self-tapping, the protruding edge 16 of the burring hole 15 of the inner piece 13 engages with the through hole 14 of the outer piece 12, so that the relay terminal 10, which is bent into a hollow cylindrical shape, may be deformed. Never happened. Further, since both ends of the relay terminal 10 are engaged with the step portion 17 and the engagement hole 21 of the connecting tube portion 7, and the terminal piece 18 is engaged with the notch 19, the relay terminal 10 can be moved in the axial direction or left and right in the connecting tube portion 7. There is no such thing as moving.

Although this embodiment is illustrated with the connector main body 1 equipped with a set of two wire connection tube portions 7, it may be possible to use one connection tube portion 7 or two or more connection tube portions 7 as required. There is also.

[Effect of idea]

According to the present invention, a plate-shaped conductor is bent into a hollow cylindrical shape and an outer piece is placed over the bent end of the relay terminal to be fitted into a wire connection tube formed in the electrically insulating connector body. and an inner piece, the through hole formed in the outer piece faces the screw insertion hole formed in the wire connection cylinder part, and the projection of the burring hole into which the tightening screw formed in the inner piece is screwed. By engaging the edge with the through hole of the outer piece, the outer piece of the relay terminal is fixed to the inner piece, and the relay terminal is not deformed by the self-tapping action of the tightening screw, and the electric wire connection can be ensured. Furthermore, the relay terminal is formed simply by bending a plate-shaped conductor into a hollow cylindrical shape and overlapping the bent ends, and the structure is simple because the through holes and burring holes are simply formed in the plate-shaped conductor in advance. It is easy to manufacture and does not require tapping or the like, so it is suitable for mass production.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of conventional relay terminals, Figure 3 is a front view of a wire connector showing an embodiment of the present invention, Figure 4 is a plan view of the same as above, and Figure 5 is A of the same as above. 6 is a front view of the above relay terminal, and FIG. 7 is a partially cutaway side view of the above relay terminal. DESCRIPTION OF SYMBOLS 1... Connector body, 5... Tightening screw, 7... Wire connection tube, 8... Screw insertion hole, 10... Relay terminal, 12... Outer piece, 13... Inner piece, 14...
Through hole, 15... burring hole, 16... ridge.

Claims (1)

[Scope of utility model registration request] An electrical insulating connector main body having a wire connection tube, and an outer piece and an inner piece made by bending a plate-shaped conductor into a hollow tube shape and overlapping the bent ends thereof, and fitting into the wire connection tube. a bar ring formed in the inner piece and into which a tightening screw is screwed; An electric wire connector characterized in that a projecting edge of the hole is engaged with a through hole of the outer piece.