JPH09115566A - Conductor connection sleeve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make prescrived connection without requiring both all kinds of sleeves and compression tools to be prepared. SOLUTION: This conductor connection sleeve is made up of inner insertion sleeves, and of an outer sheathing sleeve, the inertion sleeves are formed out of paired sleeves each of which comprises a tapered male screw formed over the outer circumferential surface of its cylindrical main body provided with a conductor insertion hole 24, and furthermore comprises slits 23 provided for the main body, which are cut into the main body from its insertion side end, and the outer sheathing sleeve on the other hand comprises paired parallel female screws provided in the inner circumferential surface of its cylindrical body, and the conductor insertion holes of the paired sleeves are contracted in diameter by threadedly screwing the paired sleeves into the outer sheathing sleeve.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor connecting sleeve used for connecting conductors of electric wires and cables.

[0002]

2. Description of the Related Art The most commonly used conductor connecting sleeve is a compression type for compressing a cylindrical sleeve 1 having conductor insertion holes 2 and 3 as shown in FIG. 3 into a hexagonal shape as shown in FIG. It was a sleeve.

[0003]

The compression type sleeve described above is reliable because it holds the conductor by the compressive force of the sleeve, but when both conductors to be connected have different cross-sectional areas. , The conductor insertion hole in the sleeve,
It is necessary to make them different, such as φd1 and φd2 in (a), which are commonly used.
8,60,100,150,200,250,325mm
When connecting ^two of nine conductors mutually 9 × 9 = 8
It will be necessary to prepare one kind of sleeve.

Further, it is necessary to prepare a compressor and a hexagonal die for compressing the cylindrical sleeve into a hexagonal shape.

Therefore, the problem to be solved by the present invention is to provide a conductor connection that does not require many types of sleeves as in the prior art and that does not require the preparation of a compression tool. To provide a sleeve.

[0006]

A conductor connecting sleeve provided by the present invention comprises an inner sleeve and an outer sheath sleeve, the inner sleeve having a tapered outer peripheral surface of a cylindrical body having a conductor insertion hole. It consists of a pair of sleeves having male threads and slits cut from the insertion side end, and one outer sheath sleeve has a pair of parallel female threads on the inner peripheral surface of the tubular body. By screwing the pair of sleeves into the outer sheath sleeve, the conductor insertion holes of the pair of sleeves are reduced in diameter.

In the above means, it is preferable that the inner diameters of the conductor insertion holes of the pair of sleeves in the insertion sleeve have the same or different sizes for the same diameter connection or the different diameter connection.
Further, it is standard that the inner surfaces of the conductor insertion holes of the pair of sleeves in the insertion sleeve are smooth, but unevenness may be provided in some cases.

Further, the tapered male threads of the pair of sleeves in the inner sleeve have a left-hand thread and a right-hand thread, and the pair of parallel female threads of the outer sheath sleeve have a left-hand thread and a right-hand thread. A series of tightening may be performed by rotating the outer sheath sleeve with the sleeve screwed in. In that case, it is preferable that the rear end portions of the pair of sleeves in the insertion sleeve and the outer surface of the outer sheath sleeve have tool engaging portions.

[0009]

1 and 2 show an embodiment of the present invention, in which FIG. 1 shows an insertion sleeve and FIG. 2 shows an outer sheath sleeve. The insertion sleeve is composed of a pair of a left sleeve 11 as shown in FIGS. 1A and 1B and a right sleeve 21 as shown in FIGS.

Thus, the left sleeve 11 of the insertion sleeve has a tapered male screw (left screw) 12 on the outer peripheral surface of the cylindrical body having the conductor insertion hole 14 and a slit cut from the insertion side end. 13 is provided, and a tool engaging portion 15 is provided at the rear end. Also,
The right sleeve 21 in the insertion sleeve has a tapered male screw (right screw) 22 on the outer peripheral surface of a tubular main body having a conductor insertion hole 24 and a slit 23 cut from the insertion side end. The tool locking portion 25 is provided at the rear end.

A conductor insertion hole 14 in the left sleeve 11
The inner diameter φd1 and the inner diameter φd2 of the conductor insertion hole 24 in the right sleeve are different. This is for connecting conductors of different diameters.

On the other hand, the outer sheath sleeve 30 is formed with a pair of parallel female screws 31 and 32 on the inner peripheral surface of the cylindrical body, and both female screws 31 and 32 have a left-handed and right-handed relationship. It is a thing.

Now, the conductor connecting sleeve of this embodiment having the above-mentioned respective parts is assembled by inserting the left and right sleeves 11 and 21 of the insertion sleeve into the outer sheath sleeve 30 from both sides. , Left and right sleeve 11,2
With 1 lightly screwed in, these sleeves 11 and 2
When the end portions of the conductors of the electric wire or the cable are inserted into the conductor insertion holes 14 and 24 of 1 and the outer sheath sleeve 30 is rotated in one direction, the left and right sleeves 11 and 21 become the outer sheath sleeve 3.
At the same time when the taper male screws 12 and 2 are pulled into 0
2 is compressed by the parallel female threads 31 and 32 of the outer sheath sleeve, and the conductor insertion holes 11 and 21 are reduced in diameter so that the compressive force fills the gap between the slits 13 and 23, and the conductors are cooperatively compressed. In addition, since it is sandwiched, stable electrical conduction can be achieved and the conductor can be firmly gripped and fixed.

In the above series of operations, the left and right sleeves 11 and 21 are locked to their tool locking portions 15 and 25 with a tool such as a wrench to prevent the rotation of the sleeves themselves, and thus the outer sheaths. The left and right sleeves can be simultaneously pulled in by rotating the sleeve 30. Outer sheath sleeve 30
By engaging a tool, such as a spanner, with the tool engaging portion 33, such a rotating operation can be performed.

In the above embodiment, the conductor insertion holes 14 and 24 of the left and right sleeves of the inner insertion sleeve have different diameters, but the conductor insertion holes have the same size, and conductors of the same diameter can be connected. You can

In the above embodiment, the conductor insertion holes of the left and right sleeves of the insertion sleeve are made smooth, but the invention is not limited to this. For example, screw holes may be provided with irregularities in the longitudinal direction. For example, when the conductor gripping force increases and the conductor holding force increases, it is effective when it is desired to increase the tensile strength.

[0017]

According to the present invention as described above, there is provided a conductor connecting sleeve which can make a predetermined connection without requiring many kinds of sleeves and without preparing a compression tool. The intended purpose of providing can be achieved.

According to the present invention, 9 × 2 = 19 types of conductor sleeves are required, the types can be extremely reduced, and the industrial productivity is excellent.
It can be produced at low cost. Even when stocking these types of sleeves, the number of types is greatly reduced, so management costs are low and the economy is excellent. When connecting the conductors, it is only necessary to use a normal tool such as a spanner, and it is possible to easily connect the conductors without the need for a special tool such as a compressor or a compression die.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention, in which (a) is an end view of the left sleeve of the insertion sleeve, (b) is a front view of the same sleeve, and (c) is a front view of the right sleeve of the insertion sleeve. Figure (D) is an end view of the sleeve.

FIG. 2 shows an embodiment of the present invention, in which (a) is a longitudinal cross-sectional explanatory view of the outer sheath sleeve, (b) is a front view of the sleeve, and (c).
Is an end view of the same sleeve.

3A and 3B are explanatory views of a longitudinal section of a compression sleeve, FIG. 3B is an end view of the same sleeve, and FIG. 3C is an explanatory view of the outer shape of the sleeve after compression.

[Explanation of symbols]

 11 Left-hand sleeve in the insertion sleeve 12 Tapered male screw (left screw) 13 Slit 14 Conductor insertion hole 15 Tool locking part 21 Right sleeve in the insertion sleeve 22 Tapered male screw (right screw) 23 Slit 24 Conductor insertion Hole 25 Tool locking part 30 Outer sheath sleeve 31 Parallel female screw (left screw) 32 Parallel female screw (right screw) 33 Tool locking part

Claims (5)

[Claims] 1. An inner sleeve and an outer sheath sleeve,
The inner sleeve is composed of a pair of sleeves each having a tapered male screw on the outer peripheral surface of a cylindrical body having a conductor insertion hole and a slit cut from the insertion side end, and one outer sheath. The sleeve has a pair of parallel female threads on the inner peripheral surface of the tubular body, and the diameter of the conductor insertion hole of the pair of sleeves is reduced by screwing the pair of sleeves into the outer sheath sleeve. A conductor connection sleeve. 2. The conductor connecting sleeve according to claim 1, wherein the inner diameters of the conductor insertion holes of the pair of sleeves in the insertion sleeve are the same. 3. The inner surface of the conductor insertion hole of the pair of sleeves in the insertion sleeve is made smooth or has irregularities.
The conductor connecting sleeve according to claim 1. 4. A pair of sleeve taper male threads of the inner sleeve has a left-hand thread and a right-hand thread, and a pair of parallel female threads of the outer sheath sleeve has a left-hand thread and a right-hand thread. The conductor connecting sleeve according to claim 1, wherein a series of tightening is performed by rotating the outer sheath sleeve in a state where the sleeve is screwed. 5. The conductor connecting sleeve according to claim 4, wherein a rear end portion of the pair of sleeves in the insertion sleeve and a tool locking portion are provided on an outer surface of the outer sheath sleeve.