JPS605507Y2 - Adapter for welding connection of different diameter conductors - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an adapter for welding connection of conductors of different diameters.

Conventionally, for example, conductors of different diameters of electric cables were connected by welding by simply butting the conductors with grooves and welding the grooves.

However, this method of welding connection has the disadvantage that alignment is difficult and requires a special jig.

Furthermore, even if the welding is performed after alignment, it is necessary to overlay the small-diameter conductor side to smooth out the stepped portion, making the welding process troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide an adapter for welding and connecting conductors of different diameters, which allows easy alignment of conductors of different diameters and eliminates leveling welding of stepped portions.

Hereinafter, specific examples of the present invention will be explained in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the adapter 1 for welding connection of different diameter conductors of this embodiment has a hollow sleeve-shaped adapter body 2 made of metal such as copper or aluminum. The inner diameter of the hole is equal to or slightly larger than the outer diameter of the small-diameter conductor to be connected, and the outer diameter of the adapter body 2 is selected so that it matches the outer diameter of the large-diameter conductor to be connected. Selected.

One end of this adapter body 2 is a groove connection end 4, and the other end is a conical end 5.

The groove connection end portion 4 has an axial end surface 4a that is provided by removing one side of the adapter body 2 along the axial direction.
and a first inclined end surface 4b provided on the distal end side of the axial end surface 4a to be inclined with respect to the end surface 4a; The first inclined end surface 4b and the second inclined end surface 4C both recede toward the conical end portion 5 as they radially move away from the axial end surface 4a. It is a sloped surface.

Next, a welding operation for different diameter conductors 6.7 using such an adapter 1 will be explained with reference to FIG.

The tips of both the large-diameter conductor 6 and the small-diameter conductor 7 have an inclined end surface 6a that matches the inclination angle S of the corresponding inclined end surfaces 4b and 4c.
, 7a.

The small-diameter conductor 7 is inserted into the hole 3 of the adapter body 2 from the conical end 5 side of the adapter body 2, and the small diameter conductor 7 is inserted into the hole 3 of the adapter body 2 from the side of the conical end 5 of the adapter body 2,
is aligned with the second inclined end surface 4C of the adapter main body 2.

In this state, the first inclined end surface 4b of the adapter body 2 is butted against the inclined end surface 6a of the large diameter conductor 6.

At this time, since the adapter main body 2, which has the same outer diameter S as the large-diameter conductor 6, is fitted to the tip of the small-diameter conductor 7 as described above, the center alignment between the large-diameter conductor 6 and the adapter main body 2 is By doing this, the large diameter conductor 6 and the small diameter conductor 7 can be aligned, and the alignment can be performed more easily than before.

In this state, the groove 8 formed by the inclined end surface 6a of the large diameter conductor 6a and the inclined end surface 7a of the small diameter conductor 7a at the groove connection end 4 of the adapter 1 is overlaid by overlay welding until the required outer diameter is obtained. do.

9 is the welded part.

In this case, since the weld bead is received by the bottom surface of the adapter main body 2, it is possible to prevent the bead from hanging downward.

As explained above, according to the adapter for connecting different diameter conductors according to the present invention, the tip of the small diameter conductor is fitted into the adapter body,
By aligning the large diameter conductor and the adapter body,
The large-diameter conductor and the small-diameter conductor can be easily aligned through this adapter body.

Further, since this adapter has a conical end at the end opposite to the groove connection end, there is an advantage that welding work for leveling the difference in level between both groove bodies can be omitted.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional side view of the upper half of an embodiment of the adapter according to the present invention, Fig. 2 is a perspective view of the adapter, and Fig. 3 is a side view of a welded joint of conductors of different diameters using the adapter. It is a diagram. 1...adapter, 2...adapter body, 3...hole, 4...groove connection end,
4a... Axial end face, 4b... First inclined end face, 4c... Second inclined end face, 5...
...conical end.

Claims (1)

[Scope of utility model registration request] A hollow sleeve-shaped adapter body made of metal is provided, one end of the adapter body is a groove connection end, the other end of the adapter body is a conical end, and the adapter body has a groove connection end. The groove connection end portion has an axial end surface provided by removing one side of the adapter body along the axial direction, and an axial end surface provided at a distal end side of the axial end surface at an angle with respect to this end surface. and a second inclined end surface provided on the base end side of the axial end surface and inclined with respect to this end surface, and the first inclined end surface and the second inclined end surface are separated from each other. An adapter for welding connection of conductors of different diameters, wherein each of the inclined end surfaces is an inclined surface that recedes toward the conical end portion as the distance from the axial end surface increases in the radial direction.