JPH09204946A - Terminal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the oxidation on the contact surface between a strap part and a matching terminal and prevent an overheating accident by arranging annular packings along the circumference of the matching terminal contact surface side of the strap part and the respective circumferences of bolt holes, respectively. SOLUTION: This terminal fitting is formed of a cylindrical conductor connecting part 1 and a strap part 3 having bolt holes 2 which is integrally formed on the conductor connecting part 1. An annular packing 4 is arranged on the matching terminal contact surface side 3a of the strap part 3 along the circumference of the strap part 3, and annular packings 5 are arranged along the circumferences of the bolt holes. Thus, rainwater can be surely prevented from penetrating into the contact surface between the strap part 3 and the matching terminal through the circumference of the strap part 3 and the circumferences of the bolt holes 2. Therefore, the oxidation on the contact surface between the strap part 3 and the matching terminal can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal fitting used in electric power equipment such as a substation line.

[0002]

2. Description of the Related Art The structure of a conventional terminal fitting is shown in FIGS.
0 is shown. This terminal fitting is made of copper, aluminum, or the like, and is composed of a cylindrical conductor connecting portion 1 and a plate-like battledore portion 3 having a bolt hole 2 formed integrally with the conductor connecting portion 1. ing. In this terminal fitting, a stranded wire conductor (not shown) is compression-connected to the conductor connecting portion 1, and the battledore portion 3 is superposed on a mating terminal (not shown), and the battledore portion 3 and the mating terminal are bolted together. It is used by tightening with a nut (not shown).

[0003]

By the way, the terminal fittings as described above are often used outdoors. For this reason, rainwater or the like enters the contact surface between the battledore portion and the mating terminal, and the contact is caused. There was a problem that the contact resistance increased due to the oxidation of the surface, which eventually led to an overheating accident.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and prevents rainwater and the like from entering the contact surface between the battledore portion and the mating terminal to prevent an overheating accident. A terminal fitting comprising a conductor connecting portion and a plate-like battledore portion having a bolt hole integrally formed in the conductor connected portion, the opposite side of the battledore portion being provided. An annular packing is arranged along the periphery of the terminal contact surface side and along the periphery of the bolt hole, respectively.

By disposing annular packings along the circumference of the mating plate portion on the side of the mating terminal contact surface and along the circumference of the bolt hole, respectively, from the circumference of the gazing plate portion and the circumference of the bolt hole to the mating plate portion and the mating plate. It is possible to prevent rainwater or the like from entering between the contact surfaces with the side terminals. Therefore, it is possible to prevent oxidization or the like at the contact surface between the battledore part and the mating terminal, and to prevent an increase in electrical resistance between them. Therefore, the overheating accident does not occur on the contact surface between the battledore portion and the mating terminal.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a first embodiment of a terminal fitting according to the present invention. The terminal fitting according to the present invention is a conventional one in that it is composed of a cylindrical conductor connecting portion 1 and a plate-like battledore portion 3 having a bolt hole 2 formed integrally with the conductor connecting portion 1. Same as that, except that the annular packing 4 is arranged along the periphery of the battlement plate portion 3 on the mating terminal contact surface side 3a of the battlement plate portion 3 and the annular packing 5 is arranged along the periphery of the bolt hole. There are features.

That is, as shown in FIG. 2, the battledore part 3
An annular packing groove 6 is provided along the periphery of the battledore part 3 on the mating terminal contact surface side 3a, and an annular packing 4 (for example, an O-ring) is arranged in the annular packing groove 6. Similarly, an annular packing groove (not shown) is provided along the periphery of the bolt hole, and the annular packing 5 (for example, O ring) is arranged in the annular packing groove.

In this terminal fitting, as shown in FIG. 3, a stranded wire conductor (not shown) is compression-connected to the cylindrical conductor connecting portion 1, and the battledore portion 3 is superposed on the mating terminal 10 to form a battledore board. It is used by tightening the portion 3 and the mating terminal 10 with bolts and nuts 11. In addition, it is preferable to apply grease or the like to the contact surface between the battledore plate portion 3 and the mating terminal 10 in order to further improve the waterproof performance.

As shown in FIG. 2, the height relationship between the annular packing groove 6 and the annular packing 4 arranged in the groove is such that a part of the annular packing 4 initially projects from the annular packing groove 6. After being formed, the annular packing 4 is crushed and brought into close contact with the mating terminal 10 after being connected to the mating terminal 10, as shown in FIG.
As a result, it is possible to reliably prevent rainwater or the like from entering from the periphery of the battledore portion 3 to the contact surface between the battledore portion 3 and the mating terminal 10. In addition, such a relationship is the same between the annular packing groove provided around the bolt hole and the annular packing 5 arranged in the annular packing groove.

FIG. 5 shows a second embodiment of the terminal fitting according to the present invention. The difference from the above-mentioned embodiment is that the conductor connecting portion 1 is formed in a pipe shape, and the pipe-shaped conductor connecting portion 1 is formed.
It is a point where the pipe bus bar 11 is welded and connected to the. Also,
In order to reinforce the connecting portion between the conductor connecting portion 1 and the battledore portion 3,
A plate-shaped reinforcing rib 12 is formed across both. Since the other points are the same as those of the above-described embodiment, the same reference numerals are given and the description thereof is omitted.

FIG. 6 shows a third embodiment of the terminal fitting according to the present invention. The difference from the embodiment shown in FIG. 1 is that the conductor connecting portion 1 is formed in a pipe shape, The point is that the stranded wire conductor 13 is inserted into the conductor connecting portion 1 and the end portion of the inserted stranded wire conductor 13 is welded 14 to the conductor connecting portion 1. Since the other points are the same as those of the embodiment shown in FIG. 1, the same reference numerals are given and the description thereof will be omitted.

FIG. 7 shows a fourth embodiment of the terminal fitting according to the present invention. The difference from the embodiment shown in FIG. 1 is that one end side of the battledore part 3 is extended to form a rectangular hole. A conductor connecting portion 1 having a braided conductor 15 is formed on the conductor connecting portion 1.
This is the point where compression connection was made. Since the other points are the same as those of the embodiment shown in FIG. 1, the same reference numerals are given and the description thereof will be omitted.

FIG. 8 shows a fifth embodiment of the terminal fitting according to the present invention. The difference from the embodiment shown in FIG. 7 is that a conductor connecting portion formed by extending one end side of the battledore portion 3 is formed. This is a point in which a laminated conductor 16 in which thin plates are laminated is welded and connected. Since the other points are the same as those of the embodiment shown in FIG. 7, the same reference numerals are given and the description thereof will be omitted.

The structure of the terminal fitting according to the present invention is not limited to the structure of each of the above-described embodiments. For example, the shape of the battledore part may be a round shape, and the number of bolt holes is also different. It can be arbitrarily selected. Further, an annular packing groove may be provided along the periphery of the contact surface side of the mating terminal to which the terminal fitting is connected, and the annular packing may be arranged in the annular packing groove. Further, an annular packing groove may be provided on the contact surface side of the counterpart terminal to which the terminal fitting is connected, corresponding to the bolt hole of the terminal fitting, and the annular packing may be arranged in the annular packing groove. Even if configured in this way, as a result, a configuration in which annular packings are respectively arranged along the periphery of the mating terminal contact surface side of the battledore portion and along the periphery of the bolt hole. It will be.

[0015]

As described above, the terminal fitting according to the present invention is a terminal fitting comprising a conductor connecting portion and a plate-like battledore portion having a bolt hole integrally formed in the conductor connected portion. Since the annular packings are arranged along the periphery of the mating terminal contact surface side of the portion and along the circumference of the bolt hole, respectively, the contact surface between the battlement board portion and the mating terminal from around the battlement plate portion and around the bolt hole. It is possible to reliably prevent rainwater and the like from entering in the meantime. For this reason, it is possible to prevent oxidization or the like on the contact surface between the battledore portion and the mating side terminal, and thus no overheating accident occurs at the contact surface between the battledore portion and the mating side terminal.

[Brief description of drawings]

FIG. 1 is a bottom view showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state where an annular packing is arranged in an annular packing groove.

FIG. 3 is a side view showing a usage state of the terminal fitting of FIG.

FIG. 4 is an explanatory diagram showing a connection state between an annular packing and a mating terminal.

FIG. 5 is a side view showing a second embodiment of the present invention.

FIG. 6 is a side view showing a third embodiment of the present invention.

FIG. 7 is a side view showing a fourth embodiment of the present invention.

FIG. 8 is a side view showing a fifth embodiment of the present invention.

FIG. 9 is a plan view of a conventional terminal fitting.

FIG. 10 is a side view of FIG. 9;

[Explanation of symbols]

 1 Conductor Connection Part 2 Bolt Hole 3 Battledore Part 4, 5 Annular Packing 6 Annular Packing Groove 10 Opposite Terminal 11 Pipe Conductor 13 Stranded Wire Conductor 15 Braided Conductor 16 Laminated Conductor

Claims (1)

[Claims] 1. A terminal fitting comprising a conductor connecting portion and a plate-like battledore plate portion having a bolt hole integrally formed in the conductor connected portion, which is provided along a periphery of a mating terminal contact surface side of the battledore plate portion. And a terminal fitting, wherein annular packings are arranged along the circumference of the bolt hole.