JPH09115569A - Cable conductor connection tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make connection for cable conductors without requiring any special tool. SOLUTION: The cable conductor connection tube is made up of a connection tube main body 4 capable of inerting both cables in a state that the cable conductor end parts of both the cables are overlapped, and of a screw pin capable of being screwed in the axial direction of the aforesaid conductor from the end face of one cable conductor, and electrical conductivity is so designed as to be produced between the cable conductors by fastening the cable conductor end parts which are widened in the radial direction by the screw pin 5 having been screwed in, in the connection tube main body 4 with pressure. The screw pin 5 can easily screwed in by making use of a common portable tool, for example, the rotation locking head of a driver.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable conductor connecting pipe which enables predetermined conductor connection without requiring a special tool.

[0002]

2. Description of the Related Art FIGS. 1 and 2 show an example of a conventional cable conductor connecting pipe. FIG. 1 shows a compression type conductor connecting pipe 2 and FIG. 2 shows a crimping type conductor connecting pipe 3. Reference numeral 1 is a cable conductor. There is also a soldering type conductor connecting tube.

[0003]

When performing the cable conductor connecting work in the above-mentioned prior art conductor connecting pipe,
A compressor is required in the case of the compression-type conductor connecting tube of FIG. 1, a crimping machine is used in the case of the crimping-type conductor connecting tube, and a special tool such as a burner or torch is required in the case of the soldering-type conductor connecting tube. However, preparation for field work is difficult.

[0004] Therefore, the problem to be solved by the present invention is to provide a cable conductor connecting pipe which enables the work of connecting the cable conductors without the need for the above-mentioned special tool.

[0005]

DISCLOSURE OF THE INVENTION A cable conductor connecting pipe provided by the present invention comprises a connecting pipe body which can be inserted in a state where both cable conductor ends to be connected are overlapped with each other, and an end face of at least one cable conductor. And a screw pin that can be screwed in the axial direction of the conductor, and the cable conductor end portion that is expanded in the radial direction by screwing the screw pin is pressed into the connection pipe body to achieve electrical conduction between the cable conductors. It will be done in this way.

In the cable conductor connecting pipe of the present invention, the screw pin has a head for a general portable tool such as a driver rotation locking, so that the work can be performed more easily.

The screw pins are preferably screwed into both ends of the cable conductors to ensure that both ends of the cable conductors are prevented from coming off from the connecting pipe body.

The thickness of the screw pin; the screw diameter is determined by the following formula 1, and it is preferable that it is A or more.

[0009]

(Equation 2)

In addition, it is standard that the inner surface of the connecting pipe body is smooth, but in some cases, a protrusion or a screw-shaped groove is provided to further secure the retaining and fastening of the cable conductor. good.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a cable conductor connecting pipe according to an embodiment of the present invention in a connection state. The cross section is shown in FIG. FIG. 2 shows the same situation of inserting the cable conductor into the cable conductor connecting pipe.

The cable conductor connecting pipe of this embodiment comprises a connecting pipe main body 4 and two screw pins 5 and 5. The connecting pipe main body 4 is a copper cylindrical body and is connected as shown in FIG. The inner diameter is selected (outer diameter of the cable conductor × 2 + α (dimensional tolerance)) so that the two cable conductors 1 and 1 to be inserted can be inserted in a stacked state.

One of the screw pins 5 and 5 is a rod-shaped member made of copper and has a head for screwing the driver rotation and a screw pitch 2.
The thickness of the screw shaft portion; the screw diameter is determined by the following formula 1 and is set to A or more.

[0014]

(Equation 3)

The procedure for connecting the cable conductors by the cable conductor connecting pipe of this embodiment will be described. First, as shown in FIG. 2, the ends of the cable conductors (stranded wires) 1, 1 to be connected are overlapped with each other. Inserted into the connection tube body 4 in the closed state. Next, the screw pins 5 and 5 are screwed in from the end faces of the cable conductors 1 and 1 in the axial direction of the cable conductors. Then, the end portions of the cable conductors 1 and 1 are expanded in the radial direction as indicated by 1'and 1'in FIG. 3 so as to fill the gaps in the connection pipe body 4, and the expanded cable conductors 1 and 1 '. 1'and 1'clamp on the inner surface of the connecting pipe body 4, thereby electrically connecting the cable conductors 1 and 1 (1 ', 1').

Since the screw pin 5 exerts a wedge effect, it has a function of preventing the cable conductor ends 1'and 1'from coming off, so that the cable conductor is securely fixed and the current can be stably supplied.

In the above embodiment, the groove of the head of the screw driver 5 is a plus type, but it may be a minus type.

Although the inner surface of the connecting pipe body 4 is smooth, the present invention is not limited to this, and a protrusion or a screw-shaped groove may be added to the connecting pipe main body 4 so that it can be more effectively prevented from coming off.

[0019]

According to the present invention as described above, it is possible to achieve the intended object of providing a cable conductor connecting pipe that enables the work of connecting cable conductors without requiring a special tool. You can

From the above results, the cable conductor connecting pipe of the present invention is effective when a special tool cannot be prepared, when a space is small and a large tool cannot be used, or when a firearm cannot be used.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional explanatory view showing a cable conductor connecting pipe and a cable conductor connecting state according to the embodiment of the present invention.

FIG. 2 is an explanatory cross-sectional view showing a situation in which a cable conductor is inserted into a cable conductor connecting tube according to an embodiment of the present invention.

FIG. 3 is a cross-sectional explanatory view showing a conductor connection state by a cable conductor connection tube according to an embodiment of the present invention.

FIG. 4 is a longitudinal cross-sectional explanatory view showing a compression-type conductor connection pipe and a cable conductor connection state by the compression-type conductor connection pipe as a conventional example.

FIG. 5 is a longitudinal cross-sectional explanatory view showing a crimp type conductor connecting tube and a cable conductor connecting state by the crimping type conductor connecting tube as a conventional example.

[Explanation of symbols]

 1 Cable conductor (stranded wire) 4 Connection tube body 5 Screw pin

Claims (5)

[Claims] 1. A connecting pipe main body which can be inserted in a state where both cable conductor ends to be connected are overlapped with each other, and a screw pin which can be screwed in an axial direction of the conductor from an end surface of at least one cable conductor, A cable conductor connecting pipe, which is designed to electrically connect the cable conductors to each other by pressing an end portion of the cable conductor, which is expanded in a radial direction by screwing a screw pin, into the connecting pipe body. 2. The conductor connecting pipe according to claim 1, wherein the screw pin has a head for locking rotation of the tool. 3. The conductor connecting pipe according to claim 1, wherein the screw pin is screwed into both ends of the cable conductor. 4. The thickness of the screw pin; the screw diameter is determined by the following formula 1 and is A or more.
The conductor connecting tube according to any one of claims 1. (Equation 1) 5. The cable conductor connecting pipe according to claim 1, wherein the inner surface of the connecting pipe body is smooth or is provided with protrusions or screw-shaped grooves.