JPH0645262U - Conductor connection tube - Google Patents

Abstract

(57) [Summary] [Purpose] To perform cable conductor connection work relatively quickly without the need for skill. [Structure] This conductor connecting pipe is used by fitting an inner metal fitting 10 and an outer metal fitting 20 together. When the cable conductor 5 is inserted into the through hole 11 of the inner metal fitting 10 and covered with the outer metal fitting 20, the tapered surface 12 of the inner metal fitting 10 engages with the tapered hole 21 of the outer metal fitting 20 and acts like a wedge. Therefore,
The slit 13 of the inner metal member 10 is narrowed to firmly grip the cable conductor, and a straight line connection is possible without compression or welding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a conductor connecting pipe used for linear connection of cable conductors and the like.

[0002]

[Prior art]

 The following configurations are generally adopted for linear and branch connections of electric cables. FIG. 3 shows a vertical sectional view of a main portion of a conventional general cable straight connecting portion. In the figure, the left and right cables 1 have their sheaths 2, shielding layers 3, and insulators 4 stripped off at their ends to expose the cable conductors 5, respectively. The left and right cable conductors 5 are compression-connected by a compression sleeve 6 having a sectional shape as shown in the figure. Such a compression sleeve 6 is made of, for example, copper or the like, and is crushed to reduce its radius by using a special compression device. When performing such a straight cable connection, other than the compression sleeve as described above, a connection method such as welding, soldering, or crimping is also widely adopted.

[0003]

[Problems to be solved by the device]

 By the way, when assembling the above-mentioned cable connecting portion, each operator must operate a compression tool or a crimping device or a gas burner for connecting the cable conductors to each other. However, handling such a device requires skill and involves a risk of injury and burns. Further, it takes time to prepare and clean up these devices, which has been a cause of impeding the reduction of connection work time. The present invention has been made in view of the above points, and an object of the present invention is to provide a conductor connecting pipe which can perform a cable conductor connecting work relatively quickly without requiring skill.

[0004]

Means for Solving the Problems A conductor connecting pipe of the present invention has a through hole for inserting a cable conductor in the center and a tapered surface on the outer periphery, and the through hole reaching the through hole is formed. It is characterized by comprising an inner metal member having parallel slits, and an outer metal member having a tapered hole at the center thereof into which the inner metal member is inserted and which engages with the tapered surface of the inner metal member. .

[0005]

[Action]

 This conductor connecting pipe is used by fitting an inner metal fitting and an outer metal fitting. When the cable conductor is inserted into the through hole of the inner metal fitting and covered with the outer metal fitting, the tapered surface of the inner metal fitting engages with the tapered hole of the outer metal fitting and acts like a wedge. Therefore, the slit of the inner metal fitting is narrowed and the cable conductor is strongly gripped, so that a straight line connection is possible without compression or welding.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of a conductor connecting pipe of the present invention. (A) is a side view of the inner metal fitting, (b) is a front view of the inner metal fitting, (c) is a side view of the outer metal fitting, and (d) is It is a front view of an outer side metal fitting. As shown in the drawing, the inner metal member 10 is provided with a tapered surface 12 on the outer periphery thereof, for example, which gradually reduces the radius from one side to the other side when viewed in the longitudinal direction. Further, at the center, there is a through hole 11 into which the cable conductor 5 as shown in FIG. 3 can be inserted. Further, a slit 13 parallel to the through hole 11 is provided so as to reach the through hole 11 from the tapered surface 12. As the inner metal fitting 10, for example, a copper bar cut and used is used. If necessary, the inner surface of the through hole 11 may be appropriately roughened so as to make good electrical contact with the cable conductor 5.

On the other hand, the outer metal fitting 20 is provided with a taper hole 21 at its center portion so as to engage with the tapered surface 12 of the inner metal fitting 10. It is assumed that the tapered surface 12 and the tapered hole 21 are smoothly fitted to each other and the surfaces thereof are finished so that the same effect as a wedge can be obtained. The outer peripheral surface 22 of the outer metal fitting 20 is selected to have a uniform outer diameter as a whole. In this embodiment, the outer metal fitting 20 is also made of the same material as the inner metal fitting 10.

The conductor connecting pipe of the present invention having the above-described structure is assembled as follows. FIG. 2 shows a vertical cross-sectional view of a main part of a cable straight-line connecting portion adopting the conductor connecting tube of the present invention. In the figure, the cable 1 has the insulator 4 removed and the cable conductor 5 exposed at the end. The cable conductor 5 is linearly connected by the inner metal fitting 10, and the outer metal fitting 20 covered on the outer side thereof tightens the inner metal fitting 10 by the wedge effect. As a result, the cable conductor 5 receives a strong compressive force and the connection is completed. For example, in the state shown in the figure, the outer metal fitting 20 may be pushed strongly to the right, or the outer metal fitting 20 may be strongly pressed by a screw or the like provided on a part of the inner metal fitting 10 and a part of the outer metal fitting 20. By covering the inner metal fitting 10 on the outer side, the connection of the cable conductor 5 is completed with a predetermined predetermined tightening force.

The present invention is not limited to the above embodiments. In the above embodiment, for example, the inner metal fitting 10 and the outer metal fitting 20 are each composed of a sleeve made of copper or the like. However, when the cable conductor is aluminum, for example, the inner metal fitting 10 is composed of aluminum or the inner metal fitting 10 is made. If the electrical resistance of the connecting portion can be suppressed to a sufficiently low level by the above, the outer metal fitting 20 may be made of an insulator or a metal having a relatively high electrical resistance.

[0010]

[Effect of device]

 The conductor connecting pipe of the present invention described above has an inner metal fitting having a through hole for inserting a cable conductor in the center and a tapered surface on the outer circumference, reaching the through hole and providing a slit parallel to the through hole. Since the cable conductor is connected by fitting it into the outer metal fitting that has a tapered hole that engages with the tapered surface in the center, the cable conductor is compressed at a predetermined pressure due to the effect of the wedge, and further welding or soldering is performed. It does not require a large-scale device for connection processing as compared with attaching and compressing, and does not require much skill. Therefore, workability such as assembling work of the connecting portion is improved, and a cable connecting portion having stable characteristics can be provided.

[Brief description of drawings]

1 shows an embodiment of a conductor connecting pipe of the present invention, (a) is a side view of an inner metal fitting, (b) is a front view of an inner metal fitting, (c) is a side view of an outer metal fitting, and (d) is an outer material. It is a front view of a metal fitting.

FIG. 2 is a vertical cross-sectional view of a main portion of a straight connecting portion of a cable using the conductor connecting tube of the present invention.

FIG. 3 is a vertical cross-sectional view of a main part of a straight connecting portion of a conventional cable.

[Explanation of symbols]

 10 Inner metal fitting 11 Through hole 12 Tapered surface 13 Slit 20 Outer metal fitting 21 Tapered hole 22 Outer peripheral surface

Claims (1)

[Scope of utility model registration request] 1. An inner fitting having a through hole for inserting a cable conductor in a center thereof, a tapered surface on an outer periphery, and a slit parallel to the through hole reaching the through hole, and the inner side. A conductor connecting pipe, wherein a metal fitting is inserted, and an outer metal fitting having a tapered hole in a central portion that engages a tapered surface of the inner metal fitting.