JP3143355U

JP3143355U - HB bushing

Info

Publication number: JP3143355U
Application number: JP2008001138U
Authority: JP
Inventors: 勝仁秋間
Original assignee: 株式会社不二電業社
Priority date: 2008-01-31
Filing date: 2008-01-31
Publication date: 2008-07-24
Anticipated expiration: 2018-01-31

Abstract

【課題】ＨＢ型安全ブレーカーの電線留めビス穴に挿入することによって、感電する恐れが無くなり、丈夫で外れにくいブッシングを提供する。
【解決手段】ＨＢブッシングを電線留めビスの穴に挿入すれば、感電防止ができる。このブッシングはポリエチレン樹脂で製作し、壊れにくい。円柱体の上部になべ頭を設け、取付しやすい。円柱体の中央部分の直径はビス穴の内径より少し大きめに膨らむ形にして、外れにくいので、紛失することは解決できる。、中心部の穴は測定用とし、測定するときはブッシングを外さなくても測定ができる。壊れにくく、外れにくく、すべてのＨＢ型安全ブレーカーに適合する。
【選択図】図１An object of the present invention is to provide a bushing that is strong and does not easily come off because there is no risk of electric shock by being inserted into a wire retaining screw hole of an HB type safety breaker.
An electric shock can be prevented by inserting an HB bushing into a hole of a wire fastening screw. This bushing is made of polyethylene resin and is hard to break. A pan head is provided at the top of the cylindrical body for easy installation. The diameter of the central part of the cylindrical body swells slightly larger than the inner diameter of the screw hole and is difficult to come off. The center hole is used for measurement, and measurement can be performed without removing the bushing. It is difficult to break and come off and fits all HB type safety breakers.
[Selection] Figure 1

Description

本考案は、電気配線工事に使用するＨＢ型安全ブレーカーの電線留めビスに使用する端子カバーに関するもの。The present invention relates to a terminal cover used for an electric wire fixing screw of an HB type safety breaker used for electric wiring work.

従来のＨＢ型安全ブレーカーの端子カバーは平型ですが、壊れやすいし、外れやすかった、しかもサイズが統一されていない、代替品は使えないので、とても不便です。The terminal cover of the conventional HB type safety breaker is a flat type, but it is very inconvenient because it is fragile, it is easy to come off, and the size is not standardized.

しかしブレーカーの端子カバーを紛失すると、電線を留めるビスが裸になり、この状態で通電すると、感電する恐れがある。However, if the terminal cover of the breaker is lost, the screw for fastening the electric wire becomes bare, and there is a risk of electric shock if energized in this state.

この課題を解決するための請求項１の発明は、１５Ａ〜３０ＡのＨＢ型安全ブレーカー用とし、電線留めビスの穴に直径７．６ｍｍ、高さ６ｍｍの円柱状のブッシングを挿入すれば、感電防止ができる。このブッシングは円柱体の上部に直径１０ｍｍ、高さ２ｍｍのなべ頭を設け、装着あるいは外すときは持ちやすい、また円柱体の中央部分は直径９ｍｍくらいで、電線留めビス穴の内径より少し大きめに膨らむ形にして、外れにくい。材質はポリエチレン樹脂なので、壊れにくい。中心部の穴は測定用とし、電圧測定、絶縁測定するときは、ブッシングを外さなくても測定ができる。電線の入替等に際し、細いドライバーを穴に入れて簡単に外せる（図３）。
特徴は壊れにくく、外れにくい、全てのＨＢ型安全ブレーカーに適合する。The invention of claim 1 for solving this problem is for an HB type safety breaker of 15A to 30A. If a cylindrical bushing having a diameter of 7.6 mm and a height of 6 mm is inserted into the hole of the electric wire fixing screw, It can be prevented. This bushing has a pan head with a diameter of 10 mm and a height of 2 mm at the top of the cylinder, which is easy to hold when attached or removed, and the center of the cylinder is about 9 mm in diameter, slightly larger than the inner diameter of the wire-retaining screw hole. Inflated shape, hard to come off. Since the material is polyethylene resin, it is hard to break. The hole in the center is used for measurement. When measuring voltage or insulation, measurement can be done without removing the bushing. A thin screwdriver can be inserted into the hole and easily removed when replacing the wires (Fig. 3).
The feature is suitable for all HB type safety breakers that are hard to break and come off.

本考案のブッシングをＨＢ型安全ブレーカーの電線留めビス穴に挿入することによって、感電する恐れが無くなり、またこのブッシングは丈夫で外れにくいので、長く使える、価額も安価である。ＨＢブッシングはすべてのＨＢ型安全ブレーカーに適合するので、施工者は常時携帯して、安全確実な施工ができ、大変便利です。By inserting the bushing of the present invention into the wire retaining screw hole of the HB type safety breaker, there is no fear of electric shock, and this bushing is strong and difficult to come off, so it can be used for a long time and is inexpensive. The HB bushing is suitable for all HB type safety breakers, so the installer can carry it with him at all times and work safely and reliably.

このＨＢブッシングの円柱体となべ頭と一体型にする、中心穴は中心を貫通するよう、円柱の上下部の外径はビス穴の内径と同じにして、中央部分は少し膨らむ形にする。材質はポリエチレン樹脂製です。The cylindrical body of the HB bushing and the pan head are integrated. The outer diameter of the upper and lower parts of the cylinder is the same as the inner diameter of the screw hole so that the central hole penetrates the center, and the central part is slightly swelled. The material is made of polyethylene resin.

ＨＢ型安全ブレーカー。HB type safety breaker. ＨＢブッシング。HB bushing. ＨＢ型安全ブレーカーにＨＢブッシングの装着図。HB bushing installed on HB type safety breaker.

Explanation of symbols

１ブレーカー
２ブレーカー止めビス穴
３電線留めビス穴
４電線留めビス
５電線挿入穴
６ＨＢブッシング
７測定用穴1 Breaker 2 Breaker retaining screw hole 3 Wire retaining screw hole 4 Wire retaining screw 5 Wire insertion hole 6 HB bushing 7 Measurement hole

Claims

Insulating bushing used at the location of the wire clamp screw of the HB type safety breaker (15A-30A) used for electrical wiring work
A cylinder with a diameter of 7.6 mm (about 9 mm in the center) and a height of 6 mm, a pan head with a diameter of 10 mm and a height of 2 mm at the top of the cylinder, and a measuring hole with a diameter of 4 mm at the longitudinal center of the cylinder and the head. Bushing provided. A polyethylene resin material is used to prevent electric shock in the role of insulation. (Figure 2)