JP2000111580A - Uninterruptible tool - Google Patents
Uninterruptible toolInfo
- Publication number
- JP2000111580A JP2000111580A JP10281639A JP28163998A JP2000111580A JP 2000111580 A JP2000111580 A JP 2000111580A JP 10281639 A JP10281639 A JP 10281639A JP 28163998 A JP28163998 A JP 28163998A JP 2000111580 A JP2000111580 A JP 2000111580A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- main body
- push
- annular blade
- uninterruptible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009413 insulation Methods 0.000 claims abstract 2
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 21
- 230000001788 irregular Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、負荷を停電させる
ことなく電力量計等の計器を取り外すために使用する無
停電工具に関し、特に、電源側ケーブル、負荷側ケーブ
ルに接続される押し切りねじを備えた無停電工具に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power tool used for removing a meter such as a watt-hour meter without interrupting a load, and more particularly, to a push-off screw connected to a power supply side cable and a load side cable. Related to uninterruptible tools provided.
【０００２】[0002]
【従来の技術】無停電工具は、電力量計に接続された電
源側ケーブルと負荷側ケーブルとを短絡させてバイパス
路を形成し、負荷を停電させることなく電力量計を交換
するために用いられる工具である。このような無停電工
具に関する発明が、特願平８−２２８４４０号として本
出願人により特許出願され、特開平１０−７３６１８号
として出願公開されている。2. Description of the Related Art An uninterruptible power tool is used for short-circuiting a power supply side cable and a load side cable connected to a watt hour meter to form a bypass path, and for replacing the watt hour meter without a load power failure. Tool. An invention relating to such an uninterruptible tool has been filed as a patent application by the present applicant as Japanese Patent Application No. 8-228440, and has been published as Japanese Patent Application Laid-Open No. 10-73618.
【０００３】この無停電工具について概略を説明する。
図１０は、無停電工具を用いる電力量計の交換を説明す
る説明図である。一般に、単相交流電力の場合、電力量
計に２本の電源側ケーブルと２本の負荷側ケーブルが接
続され、また、多相交流電力であって、ｎ（ｎは自然
数）相交流電力の場合、電力量計にｎ本の電源側ケーブ
ルとｎ本の負荷側ケーブルが接続されるが、図１０にお
いては、単相交流電力の場合について説明する。The outline of this uninterruptible tool will be described.
FIG. 10 is an explanatory diagram illustrating replacement of a watt hour meter using an uninterruptible tool. In general, in the case of single-phase AC power, two power-supply cables and two load-side cables are connected to a watt-hour meter, and a multi-phase AC power of n (n is a natural number) In this case, n power-side cables and n load-side cables are connected to the watt-hour meter. FIG. 10 illustrates the case of single-phase AC power.
【０００４】図１０（ａ）に示すように、電力量計１０
０には、単相交流電力用の電源側ケーブルと負荷側ケー
ブルとが接続されている。電力量計１００の取り換えや
修理のために電力量計１００を取り外すとき、電源側と
負荷側との断線を回避する必要がある。電力量計を取り
外す前に、作業者は、無停電工具１０１を用いて電源側
ケーブルと負荷側ケーブルとを短絡させ、電源側と負荷
側との間にバイパス路を形成する。[0004] As shown in FIG.
To 0, a power supply side cable and a load side cable for single-phase AC power are connected. When removing the watt-hour meter 100 for replacement or repair of the watt-hour meter 100, it is necessary to avoid disconnection between the power supply side and the load side. Before removing the watt-hour meter, the operator short-circuits the power supply side cable and the load side cable using the uninterruptible tool 101, and forms a bypass between the power supply side and the load side.
【０００５】具体的には、図１０（ｂ）に示すように、
無停電工具１０１を用いて電源側ケーブルと負荷側ケー
ブルの途中にスイッチを設け、図１０（ｃ）に示すよう
に、スイッチにより電源側ケーブルと負荷側ケーブルを
短絡させ、図示しないバイパス路形成完了表示部により
電源側ケーブルと負荷側ケーブルとの短絡を確認したの
ち、電力量計１００を取り外す。作業者は、新しい電力
量計１００を接続し、電力量計１００が正常に動作して
いることを確認したのち、図１０（ｂ）に示すように、
スイッチを開き、図１０（ａ）に示すように無停電工具
を取り外し、作業を終了する。More specifically, as shown in FIG.
A switch is provided midway between the power supply side cable and the load side cable using the uninterruptible tool 101, and the power supply side cable and the load side cable are short-circuited by the switch as shown in FIG. After confirming the short circuit between the power supply side cable and the load side cable on the display unit, the watt hour meter 100 is removed. After connecting the new watt-hour meter 100 and confirming that the watt-hour meter 100 is operating normally, as shown in FIG.
The switch is opened, the uninterruptible tool is removed as shown in FIG. 10A, and the operation is completed.
【０００６】この無停電工具１０１は、スイッチを形成
するとき、絶縁体により被覆された電源側ケーブルと負
荷側ケーブルとを押し切りねじを用いて短絡させる。こ
の押し切りねじについて説明する。図１１は押し切りね
じの説明図である。図１２は、無停電工具における押し
切りねじの使用状態を示す説明図である。When the switch is formed, the uninterruptible power tool 101 short-circuits the power-supply-side cable and the load-side cable covered with an insulator using a push-off screw. The push-off screw will be described. FIG. 11 is an explanatory diagram of a push-off screw. FIG. 12 is an explanatory diagram illustrating a use state of a push-off screw in an uninterruptible tool.
【０００７】図１１（ａ）、および、図１１（ｂ）に示
すように、押し切りねじ１０２は、頭部１０２ａ、雄ね
じ部１０２ｂ、環状刃部１０２ｃおよび凹凸先端部１０
２ｄを備えている。図１２に示すように、押し切りねじ
１０２は、無停電工具１０１の本体１０１ａに設けら
れ、バイパス導体である本体用雌ねじ部１０１ｂに螺挿
されている。As shown in FIGS. 11 (a) and 11 (b), the push-off screw 102 has a head portion 102a, a male screw portion 102b, an annular blade portion 102c and an uneven tip portion 10c.
2d. As shown in FIG. 12, the push-off screw 102 is provided on the main body 101a of the uninterruptible tool 101, and is screwed into the female screw part 101b for the main body, which is a bypass conductor.
【０００８】本体１０１ａと押さえ台１０１ｃとの間の
溝部１０１ｄに、電源側ケーブルまたは負荷側ケーブル
であるケーブル１０３が挿通されている。ケーブル１０
３は、導電体である電線１０３ａが絶縁体である絶縁被
覆１０３ｂにより被われる構造をしている。押し切りね
じ１０２の進行方向にケーブル１０３を配置して押し切
りねじ１０２を締め付けると、凹凸先端部１０２ｄは、
回動しながら絶縁被覆１０３ｂを押し切り、電線１０３
ａに圧接する。これにより、電線１０３ａ、押し切りね
じ１０２および本体用雌ねじ部１０１ｂは導通する。こ
のようにして電源側と負荷側とのケーブルを導通させ、
スイッチを接続すると、電源側と負荷側のバイパス路が
形成される。A cable 103 which is a power supply side cable or a load side cable is inserted into a groove 101d between the main body 101a and the holding table 101c. Cable 10
3 has a structure in which the electric wire 103a as a conductor is covered with an insulating coating 103b as an insulator. When the cable 103 is arranged in the traveling direction of the push-off screw 102 and the push-off screw 102 is tightened,
The insulating coating 103b is pushed off while rotating, and the electric wire 103
a. Thereby, the electric wire 103a, the push-off screw 102, and the female screw portion 101b for the main body conduct. In this way, the cable between the power supply side and the load side is conducted,
When the switches are connected, a bypass path is formed on the power supply side and the load side.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、無停電
工具１０１を使用するとき、作業者は、無停電工具１０
１に設けられた図示しないバイパス路形成完了表示部に
より、バイパス路が形成されたことを確認できるにも関
わらず、無停電工具１０１の取扱が不慣れであるため、
あるいは、電線１０３ａへ確実に接続しようとするた
め、押し切りねじ１０２に過剰の締め付けトルクを与え
る傾向があった。その結果、押し切りねじ１０２の頭部
１０２ａのマイナス溝が破損したり、環状刃部１０２ｃ
の凹凸先端部１０２ｄが破損したり、短期間に磨滅した
りする。However, when using the uninterruptible tool 101, the operator must
The handling of the uninterruptible tool 101 is unfamiliar to the user, despite the fact that the bypass passage has been formed can be confirmed by the bypass passage formation completion display unit (not shown) provided in the unit 1.
Alternatively, there is a tendency that an excessive tightening torque is applied to the push-off screw 102 in order to reliably connect to the electric wire 103a. As a result, the minus groove of the head portion 102a of the push screw 102 may be damaged, or the annular blade portion 102c
May be damaged or worn out in a short time.
【００１０】無停電工具１０１の従来の押し切りねじ１
０２は、頭部１０２ａ、雄ねじ部１０２ｂ、および、環
状刃部１０２ｃが一体に形成されたり、または、雄ねじ
部１０２ｂの先端に突出している凸部に環状刃部１０２
ｃをかしめて固定している。頭部１０２ａのマイナス溝
が破損した場合、または、凹凸先端部１０２ｄが破損、
あるいは、磨滅した場合、他の部分が使用可能であって
も押し切りねじ１０２全体を交換する必要があった。さ
らに、押し切りねじ１０２を交換するため、予備の押し
切りねじを多数揃えておく必要があった。押し切りねじ
は、消耗品であるにもかかわらず、無停電工具用にのみ
製作される高価な部品であり、煩雑な押し切りねじの交
換は、電力量計失効換え工事を請け負う業者の経費負担
を増大させていた。Conventional push-off screw 1 for uninterruptible tool 101
Reference numeral 02 denotes a head portion 102a, a male screw portion 102b, and an annular blade portion 102c which are integrally formed, or a convex portion projecting from the tip of the male screw portion 102b.
c is fixed by caulking. When the minus groove of the head 102a is damaged, or the uneven tip 102d is damaged,
Alternatively, if worn out, the entire push-off screw 102 had to be replaced, even if other parts could be used. Further, in order to replace the push-off screw 102, it is necessary to prepare many spare push-off screws. Although the push-off screw is a consumable item, it is an expensive part that is manufactured only for uninterruptible tools. I was letting it.
【００１１】本発明は上記問題点を解決するためになさ
れたものであり、消耗品である押し切りねじの寿命を延
ばすことにより、金銭的な負担を低減する無停電工具を
提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an uninterruptible tool that reduces the financial burden by extending the life of a push-off screw, which is a consumable product. I do.
【００１２】[0012]
【課題を解決するための手段】上記課題を解決するため
に、請求項１記載の無停電工具は、計器に接続された電
源側ケーブルと負荷側ケーブルとを短絡させて無停電で
前記計器を交換するために使用される無停電工具であっ
て、前記各ケーブルの絶縁被覆を押し切って前記各ケー
ブル内の電線に接続される押し切りねじを備えた無停電
工具において、前記押し切りねじは、工具本体に螺挿さ
れる本体用雄ねじ部と凹凸状の凹凸先端部が形成された
環状刃部とを具備し、前記本体用雄ねじ部に前記環状刃
部が取り外し自在に固定されることを特徴とするもので
ある。According to a first aspect of the present invention, there is provided an uninterruptible power tool which short-circuits a power supply side cable and a load side cable connected to an instrument to uninterruptibly connect the instrument. An uninterruptible tool used for replacement, comprising an uninterruptible tool having a push-off screw connected to an electric wire in each of the cables by pushing off an insulating coating of each of the cables, wherein the push-off screw includes a tool body. A male screw portion for the main body screwed into the main body and an annular blade portion having an uneven tip portion formed in an irregular shape, wherein the annular blade portion is detachably fixed to the male screw portion for the main body. It is.
【００１３】また、請求項２記載の無停電工具は、請求
項１に記載の無停電工具において、前記押し切りねじ
は、前記雄ねじ部の略円柱状の先端部において前記本体
用雄ねじ部の回転軸方向に対し略垂直方向に螺設された
固定ねじ用雌ねじ部に螺挿される固定ねじにより、前記
本体用雄ねじ部の先端部に前記環状刃部が固定されるこ
とを特徴とするものである。According to a second aspect of the present invention, there is provided the uninterruptible tool according to the first aspect, wherein the push-off screw is provided at a substantially cylindrical end portion of the male screw portion at a rotational axis of the male screw portion for the main body. The annular blade portion is fixed to a distal end portion of the male screw portion for the main body by a fixing screw inserted into a female screw portion for a fixing screw screwed substantially perpendicular to the direction.
【００１４】また、請求項３記載の無停電工具は、請求
項１に記載の無停電工具において、前記押し切りねじ
は、前記本体用雄ねじ部の多角形状の先端部において前
記本体用雄ねじ部の略回転軸方向に螺設された固定ねじ
用雌ねじ部に螺挿される固定ねじにより、前記本体用雄
ねじ部の先端部に前記環状刃部が固定されることを特徴
とするものである。The uninterruptible tool according to a third aspect of the present invention is the uninterruptible tool according to the first aspect, wherein the push-off screw is substantially the same as the male screw portion for the main body at the polygonal tip of the male screw portion for the main body. The annular blade portion is fixed to a distal end portion of the male screw portion for the main body by a fixing screw inserted into a female screw portion for a fixing screw screwed in a rotation axis direction.
【００１５】また、請求項４記載の無停電工具は、請求
項１に記載の無停電工具において、前記押し切りねじ
は、前記環状刃部の側壁部において前記環状刃部の環の
半径方向に螺設された固定ねじ用雌ねじ部に螺挿される
固定ねじにより、前記本体用雄ねじ部の先端部に前記環
状刃部が固定されることを特徴とするものである。According to a fourth aspect of the present invention, there is provided the uninterruptible tool according to the first aspect, wherein the push-off screw is formed in a side wall of the annular blade in a radial direction of a ring of the annular blade. The annular blade portion is fixed to a distal end of the male screw portion for the main body by a fixing screw inserted into the female screw portion for the fixing screw provided.
【００１６】[0016]
【発明の実施の形態】以下、本発明の一実施形態の無停
電工具について説明する。図１は、本発明の第１実施形
態の無停電工具の要部である押し切りねじの構成を説明
する説明図である。図２は、本発明の第１実施形態の無
停電工具の要部である押し切りねじの構成を説明する説
明図である。図３は、本発明の第１実施形態の無停電工
具の要部である押し切りねじの組立図である。以下、図
に沿って本発明の第１実施形態の無停電工具の押し切り
ねじについて説明する。なお、本発明の第１実施形態の
無停電工具において、押し切りねじ以外の構成は、従来
技術と同じであるため、説明を省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an uninterruptible power tool according to an embodiment of the present invention will be described. FIG. 1 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of the uninterruptible tool according to the first embodiment of the present invention. FIG. 2 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of the uninterruptible tool according to the first embodiment of the present invention. FIG. 3 is an assembly diagram of a push-off screw, which is a main part of the uninterruptible tool according to the first embodiment of the present invention. Hereinafter, the push-off screw of the uninterruptible tool according to the first embodiment of the present invention will be described with reference to the drawings. Note that, in the uninterruptible tool according to the first embodiment of the present invention, the configuration other than the push-off screw is the same as that of the related art, and thus the description is omitted.
【００１７】押し切りねじ１は、本体用雄ねじ部２と環
状刃部３とを備え、固定ねじ４により固定される。本体
用雄ねじ部２は、図１（ａ）、および、図１（ｂ）に示
すように、頭部２ａ、雄ねじ部２ｂ、先端部２ｃを備え
ている。図１（ｂ）に示すように、先端部２ｃは、円柱
状に形成されている。この先端部２ｃには、軸方向に対
し略垂直方向に貫通する固定ねじ用雌ねじ部２ｄが螺設
されている。The push-off screw 1 has a male screw portion 2 for the main body and an annular blade portion 3 and is fixed by a fixing screw 4. As shown in FIGS. 1A and 1B, the male screw portion 2 for the main body includes a head portion 2a, a male screw portion 2b, and a distal end portion 2c. As shown in FIG. 1B, the tip 2c is formed in a columnar shape. The distal end portion 2c is screwed with a female screw portion 2d for a fixing screw that penetrates in a direction substantially perpendicular to the axial direction.
【００１８】環状刃部３は、図２（ａ）に示すように、
中空部３ａ、第１孔部３ｂ、第２孔部３ｃ、凹凸先端部
３ｄを備えている。図２（ｂ）に示すように、凹凸先端
部３ｄは、円環状に形成され、凹凸先端部３ｄの凹部お
よび凸部は、円周方向に沿って交互に配置されるように
形成される。固定ねじ４は、図２（ｃ）に示すように、
棒先４ａを備えるスリ割り止めねじである。The annular blade 3 is, as shown in FIG.
It has a hollow portion 3a, a first hole 3b, a second hole 3c, and an uneven tip 3d. As shown in FIG. 2B, the concave / convex distal end portion 3d is formed in an annular shape, and the concave and convex portions of the concave / convex distal end portion 3d are formed so as to be alternately arranged along the circumferential direction. The fixing screw 4 is, as shown in FIG.
It is a slot screw having a rod tip 4a.
【００１９】図３に示すように、本体用雄ねじ部２の先
端部２ｃが環状刃部３の中空部３ａに嵌入され、環状刃
部３の第１孔部３ｂを介して固定ねじ用雌ねじ部２ｄに
固定ねじ４が螺挿され、固定ねじ４の棒先４ａが環状刃
部３の第２孔部３ｃに嵌入され、本体用雄ねじ部２と環
状刃部３とが固定されて、押し切りねじ１は組立られ
る。固定ねじ４と第１孔部３ｂとが、また、固定ねじ４
の棒先４ａと第２孔部３ｃとが当接することにより、本
体用雄ねじ部２と環状刃部３との回り止め、および、抜
け止めの作用を果たす。As shown in FIG. 3, the distal end portion 2c of the male screw portion 2 for the main body is fitted into the hollow portion 3a of the annular blade portion 3, and the female screw portion for the fixing screw is inserted through the first hole 3b of the annular blade portion 3. The fixing screw 4 is screwed into 2d, the rod tip 4a of the fixing screw 4 is fitted into the second hole 3c of the annular blade 3, the male screw 2 for the main body and the annular blade 3 are fixed, and the push-off screw 1 is assembled. The fixing screw 4 and the first hole 3b are
The rod tip 4a and the second hole 3c are in contact with each other to prevent the male screw part 2 for the main body and the annular blade part 3 from rotating and to prevent the body from coming off.
【００２０】次に、本発明の他の実施形態の無停電工具
について説明する。図４は、本発明の第２実施形態の無
停電工具の要部である押し切りねじの構成を説明する説
明図である。図５は、本発明の第１実施形態の無停電工
具の要部である押し切りねじの構成を説明する説明図で
ある。図６は、本発明の第２実施形態の無停電工具の要
部である押し切りねじの組立図である。以下、図に沿っ
て本発明の第２実施形態の無停電工具の押し切りねじに
ついて説明する。なお、本発明の第２実施形態の無停電
工具においても、押し切りねじ以外の構成は、従来技術
と同じであるため、説明を省略する。Next, an uninterruptible tool according to another embodiment of the present invention will be described. FIG. 4 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of the uninterruptible tool according to the second embodiment of the present invention. FIG. 5 is an explanatory diagram illustrating a configuration of a push-off screw that is a main part of the uninterruptible tool according to the first embodiment of the present invention. FIG. 6 is an assembly diagram of a push-off screw, which is a main part of the uninterruptible tool according to the second embodiment of the present invention. Hereinafter, the push-off screw of the uninterruptible tool according to the second embodiment of the present invention will be described with reference to the drawings. Note that, also in the uninterruptible tool according to the second embodiment of the present invention, the configuration other than the push-off screw is the same as that of the related art, and thus the description is omitted.
【００２１】押し切りねじ１１は、本体用雄ねじ部１２
と環状刃部１３とを備え、固定ねじ１４により固定され
る。本体用雄ねじ部１２は、図４（ａ）、および、図４
（ｂ）に示すように、頭部１２ａ、雄ねじ部１２ｂ、先
端部１２ｃを備えている。図４（ｂ）に示すように、先
端部１２ｃは、直方体状に形成されている。この先端部
１２ｃには、回転軸方向に固定ねじ用雌ねじ部１２ｄが
螺設されている。The push-off screw 11 is a male screw 12 for the main body.
And an annular blade portion 13, which is fixed by a fixing screw 14. The male screw portion 12 for the main body is shown in FIGS.
As shown in (b), a head 12a, a male screw 12b, and a tip 12c are provided. As shown in FIG. 4B, the distal end portion 12c is formed in a rectangular parallelepiped shape. A female screw portion 12d for a fixing screw is screwed to the tip portion 12c in the rotation axis direction.
【００２２】環状刃部１３は、図５（ａ）、および、図
５（ｂ）に示すように、角状凹部１３ａ、貫通孔部１３
ｂ、凹凸先端部１３ｃを備えている。固定ねじ１４は、
図５（ｃ）に示されるように、平子ねじである。なお、
特に平子ねじに限ることなく、環状刃部１３を本体用雄
ねじ部１２に固定する機能を果たすねじならどのような
種類のねじでも本発明の実施は可能である。As shown in FIGS. 5A and 5B, the annular blade portion 13 has a square recess 13a and a through-hole portion 13a.
b, an uneven tip portion 13c. The fixing screw 14
As shown in FIG. 5C, it is a flat screw. In addition,
The present invention is not limited to flat screws, and the present invention can be implemented with any type of screw that functions to fix the annular blade portion 13 to the main male screw portion 12.
【００２３】図６に示すように、本体用雄ねじ部１２の
先端部１２ｃが環状刃部１３の角状凹部１３ａに嵌入さ
れ、環状刃部１３の貫通孔部１３ｂを介して、固定ねじ
用雌ねじ部１２ｄに固定ねじ１４が螺挿され、本体用雄
ねじ部１２と環状刃部１３とが固定されて、押し切りね
じ１１は組み立てられる。先端部１２ｃの外側面と角状
凹部１３ａの内側面が当接することにより、本体用雄ね
じ部１２と環状刃部１３との回り止めの作用を果たし、
固定ねじ１４により、本体用雄ねじ部１２と環状刃部１
３との抜け止めの作用を果たす。As shown in FIG. 6, the distal end portion 12c of the male screw portion 12 for the main body is fitted into the angular recess 13a of the annular blade portion 13, and the female screw for a fixing screw is inserted through the through hole 13b of the annular blade portion 13. The fixing screw 14 is screwed into the portion 12d, the male screw portion 12 for the main body and the annular blade portion 13 are fixed, and the push-off screw 11 is assembled. The outer surface of the distal end portion 12c and the inner surface of the angular recess 13a are in contact with each other, thereby acting as a detent for the male screw portion 12 for the main body and the annular blade portion 13,
The male screw 12 for the main body and the annular blade 1 are fixed by the fixing screw 14.
3 acts as a stopper.
【００２４】なお、本体用雄ねじ部１２の先端部１２ｃ
は直方体状に形成され、角状凹部１３ａも先端部１２ｃ
が嵌入されるように直方状の凹部であるとして説明し
た。しかしながら、先端部１２ｃの外側面と角状凹部１
３ａの内側面とが当接し、回り止めの作用を果たせば良
い。先端部１２ｃの形状は３角以上の多角柱（例えば、
６角柱）であって、角状凹部１３ａも先端部１２ｃが嵌
入される多角穴状の凹部（例えば６角穴）としても本発
明の実施は可能である。The tip 12c of the male screw portion 12 for the main body is used.
Is formed in a rectangular parallelepiped shape, and the angular recess 13a also has a tip 12c.
Has been described as a rectangular recessed portion so as to be fitted. However, the outer surface of the tip portion 12c and the angular recess 1
What is necessary is just to come into contact with the inner surface of 3a and to perform the function of the detent. The shape of the tip portion 12c is a polygonal prism having three or more corners (for example,
The present invention is also applicable to a hexagonal prism having a polygonal hole-shaped recess (for example, a hexagonal hole) into which the tip 12c is fitted.
【００２５】次に、本発明の他の実施形態の無停電工具
について説明する。図７は、本発明の第３実施形態の無
停電工具の要部である押し切りねじの構成を説明する説
明図である。図８は、本発明の第３実施形態の無停電工
具の要部である押し切りねじの構成を説明する説明図で
ある。図９は、本発明の第３実施形態の無停電工具の要
部である押し切りねじの組立図である。以下、図に沿っ
て本発明の第３実施形態の無停電工具の押し切りねじに
ついて説明する。なお、本発明の第３実施形態の無停電
工具においても、押し切りねじ以外の構成は、従来技術
と同じであるため、説明を省略する。Next, an uninterruptible power tool according to another embodiment of the present invention will be described. FIG. 7 is an explanatory diagram illustrating the configuration of a push-off screw, which is a main part of the uninterruptible tool according to the third embodiment of the present invention. FIG. 8 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of the uninterruptible tool according to the third embodiment of the present invention. FIG. 9 is an assembly diagram of a push-off screw, which is a main part of the uninterruptible tool according to the third embodiment of the present invention. Hereinafter, the push-off screw of the uninterruptible tool according to the third embodiment of the present invention will be described with reference to the drawings. Note that, also in the uninterruptible tool of the third embodiment of the present invention, the configuration other than the push-off screw is the same as that of the related art, and thus the description is omitted.
【００２６】押し切りねじ２１は、本体用雄ねじ部２２
と環状刃部２３とを備え、固定ねじ２４により固定され
る。本体用雄ねじ部２２は、図７（ａ）、および、図７
（ｂ）に示すように、頭部２２ａ、雄ねじ部２２ｂ、先
端部２２ｃを備えている。図７（ｂ）に示すように、先
端部２２ｃは、円柱状に形成されている。この先端部２
２ｃの外周壁の一部には、回転軸方向に対し略垂直方向
に固定ねじ用溝部２２ｄが設けられている。The push-off screw 21 has a male screw portion 22 for the main body.
And an annular blade portion 23, which is fixed by a fixing screw 24. The male screw part 22 for the main body is shown in FIGS.
As shown in (b), a head 22a, a male screw 22b, and a tip 22c are provided. As shown in FIG. 7B, the tip 22c is formed in a columnar shape. This tip 2
A part of the outer peripheral wall of 2c is provided with a fixing screw groove 22d in a direction substantially perpendicular to the rotation axis direction.
【００２７】環状刃部２３は、図８（ａ）、および、図
８（ｂ）に示すように、中空部２３ａ、固定ねじ用雌ね
じ部２３ｂ、凹凸先端部２３ｃを備えている。固定ねじ
２４は、図８（ｃ）に示されるように、とがり先２４ａ
を備えるすり割り付き止めねじである。なお、固定ねじ
は、とがり先のすり割り付き止めねじに限ることなく、
とがり先、棒先、または、丸先などのいずれかの先端形
状を有し、すり割りつき、または、六角穴付きのいずれ
かの頭部形状を有する止めねじならば、固定ねじ用溝部
２２ｄに先端が当接して固定するため、本発明の実施は
可能である。As shown in FIGS. 8A and 8B, the annular blade portion 23 has a hollow portion 23a, a female screw portion 23b for a fixing screw, and an uneven tip portion 23c. As shown in FIG. 8 (c), the fixing screw 24
A slotted set screw provided with: The fixing screw is not limited to a slotted set screw with
A set screw having a pointed shape such as a pointed tip, a rod tip, or a rounded tip, and a slotted or a hexagonal hole-shaped head having any one of the following shapes is provided in the fixing screw groove 22d. The implementation of the invention is possible because the tips abut and secure.
【００２８】図９に示すように、本体用雄ねじ部２２の
先端部２２ｃが環状刃部２３の中空穴部２３ａに嵌入さ
れ、環状刃部２３の固定ねじ用雌ねじ部２３ｂに固定ね
じ２４が螺挿され、先端部２２ｃの固定ねじ用溝部２２
ｄに固定ねじ２４のとがり先２４ａを押圧させて本体用
雄ねじ部２２と環状刃部２３とを固定させて、押し切り
ねじ２１は組み立てられる。先端部２２ｃの固定ねじ用
溝部２２ｄと固定ねじ２４のとがり先２４ａが当接する
ことにより、本体用雄ねじ部２２と環状刃部２３との回
り止めの作用、および、抜け止めの作用を果たす。As shown in FIG. 9, the distal end portion 22c of the male screw portion 22 for the main body is fitted into the hollow hole 23a of the annular blade portion 23, and the fixing screw 24 is screwed into the female screw portion 23b for the fixing screw of the annular blade portion 23. The fixing screw groove 22 of the tip 22c is inserted.
By pressing the pointed end 24a of the fixing screw 24 against d to fix the male screw portion 22 for the main body and the annular blade portion 23, the push-off screw 21 is assembled. The contact between the fixing screw groove 22d of the distal end portion 22c and the pointed end 24a of the fixing screw 24 serves to prevent the rotation of the male screw portion 22 for the main body and the annular blade portion 23, and to prevent the body from coming off.
【００２９】なお、第１、第２、および、第３の実施形
態において、凹凸先端部は、側面から見て矩形状である
ように図示した。しかしながら、台形状、三角形状など
の各種の異なる形状の凹凸先端部としても本発明の実施
は可能である。In the first, second, and third embodiments, the concave and convex front end portions are illustrated as being rectangular when viewed from the side. However, the present invention can be implemented with various irregular shapes such as a trapezoidal shape and a triangular shape.
【００３０】以上、破損し易い押し切りねじの環状刃部
と雄ねじ部という２つの部材を、固定ねじにより容易に
組み付け、または、分解できる構造とし、本体用雄ねじ
部か、環状刃部か、いずれか一方の破損した部材のみを
交換できる無停電工具としたので、押し切りねじの寿命
を延ばし、無停電工具を利用する電力量計失効換え工事
業者の経費負担を低減することができる。As described above, the two members, the annular blade portion and the male screw portion of the push-off screw, which are easily damaged, can be easily assembled or disassembled with the fixing screw, and the male screw portion for the main body or the annular blade portion is provided. Since the uninterruptible tool can replace only one of the damaged members, the life of the push-off screw can be extended, and the cost burden of a watt-hour meter revamping contractor using the uninterruptible tool can be reduced.
【００３１】[0031]
【発明の効果】以上のように本発明の無停電工具によれ
ば、消耗品である押し切りねじの寿命を延ばすことによ
り、金銭的な負担を低減する無停電工具を提供すること
ができる。As described above, according to the uninterruptible tool of the present invention, it is possible to provide an uninterruptible tool that reduces the financial burden by extending the life of the push-off screw, which is a consumable.
【図１】本発明の第１実施形態の無停電工具の要部であ
る押し切りねじの構成を説明する説明図である。FIG. 1 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of an uninterruptible tool according to a first embodiment of the present invention.
【図２】本発明の第１実施形態の無停電工具の要部であ
る押し切りねじの構成を説明する説明図である。FIG. 2 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of the uninterruptible tool according to the first embodiment of the present invention.
【図３】本発明の第１実施形態の無停電工具の要部であ
る押し切りねじの組立図である。FIG. 3 is an assembly view of a push-off screw, which is a main part of the uninterruptible tool according to the first embodiment of the present invention.
【図４】本発明の第２実施形態の無停電工具の要部であ
る押し切りねじの構成を説明する説明図である。FIG. 4 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of an uninterruptible tool according to a second embodiment of the present invention.
【図５】本発明の第２実施形態の無停電工具の要部であ
る押し切りねじの構成を説明する説明図である。FIG. 5 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of an uninterruptible tool according to a second embodiment of the present invention.
【図６】本発明の第２実施形態の無停電工具の要部であ
る押し切りねじの組立図である。FIG. 6 is an assembly view of a push-off screw as a main part of an uninterruptible tool according to a second embodiment of the present invention.
【図７】本発明の第３実施形態の無停電工具の要部であ
る押し切りねじの構成を説明する説明図である。FIG. 7 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of an uninterruptible tool according to a third embodiment of the present invention.
【図８】本発明の第３実施形態の無停電工具の要部であ
る押し切りねじの構成を説明する説明図である。FIG. 8 is an explanatory diagram illustrating a configuration of a push-off screw, which is a main part of an uninterruptible tool according to a third embodiment of the present invention.
【図９】本発明の第３実施形態の無停電工具の要部であ
る押し切りねじの組立図である。FIG. 9 is an assembly view of a push-off screw, which is a main part of an uninterruptible tool according to a third embodiment of the present invention.
【図１０】無停電工具を用いる電力量計の交換を説明す
る説明図である。FIG. 10 is an explanatory diagram illustrating replacement of a watt hour meter using an uninterruptible tool.
【図１１】押し切りねじの説明図である。FIG. 11 is an explanatory diagram of a push-off screw.
【図１２】無停電工具における押し切りねじの使用状態
を示す説明図である。FIG. 12 is an explanatory diagram showing a use state of a push-off screw in an uninterruptible tool.
１ 押し切りねじ ２ 本体用雄ねじ部 ２ａ 頭部 ２ｂ 雄ねじ部 ２ｃ 先端部 ２ｄ 固定ねじ用雌ねじ部 ３ 環状刃部 ３ａ 中空部 ３ｂ 第１孔部 ３ｃ 第２孔部 ３ｄ 凹凸先端部 ４ 固定ねじ ４ａ 棒先 １１ 押し切りねじ １２ 本体用雄ねじ部 １２ａ 頭部 １２ｂ 雄ねじ部 １２ｃ 先端部 １２ｄ 固定ねじ用雌ねじ部 １３ 環状刃部 １３ａ 角状凹部 １３ｂ 貫通孔部 １３ｃ 凹凸先端部 １４ 固定ねじ ２１ 押し切りねじ ２２ 本体用雄ねじ部 ２２ａ 頭部 ２２ｂ 雄ねじ部 ２２ｃ 先端部 ２２ｄ 固定ねじ用溝部 ２３ 環状刃部 ２３ａ 中空部 ２３ｂ 固定ねじ用雌ねじ部 ２３ｃ 凹凸先端部 ２４ 固定ねじ ２４ａ とがり先 DESCRIPTION OF SYMBOLS 1 Push-off screw 2 Male screw part for main body 2a Head part 2b Male screw part 2c Tip part 2d Female screw part for fixing screw 3 Annular blade part 3a Hollow part 3b First hole part 3c Second hole part 3d Irregular tip part 4 Fixing screw 4a Rod tip DESCRIPTION OF SYMBOLS 11 Push-off screw 12 Male screw part for main body 12a Head 12b Male screw part 12c Tip part 12d Female screw part for fixing screw 13 Annular blade part 13a Square recess 13b Through-hole part 13c Irregular tip part 14 Fixing screw 21 Push-off screw 22 Male screw part for main body 22a Head 22b Male thread 22c Tip 22d Groove for fixing screw 23 Annular blade 23a Hollow 23b Female screw for fixing screw 23c Irregular tip 24 Fixing screw 24a
Claims (4)
ケーブルとを短絡させて無停電で前記計器を交換するた
めに使用される無停電工具であって、前記各ケーブルの
絶縁被覆を押し切って前記各ケーブル内の電線に接続さ
れる押し切りねじを備えた無停電工具において、 前記押し切りねじは、工具本体に螺挿される本体用雄ね
じ部と凹凸状の凹凸先端部が形成された環状刃部とを具
備し、前記本体用雄ねじ部に前記環状刃部が取り外し自
在に固定されることを特徴とする無停電工具。An uninterruptible tool used for exchanging an instrument without interruption by short-circuiting a power supply side cable and a load side cable connected to the instrument, wherein an insulation coating of each of the cables is cut off. An uninterruptible tool provided with a push-off screw connected to an electric wire in each of the cables, wherein the push-off screw is an annular blade portion formed with a male screw portion for a main body screwed into a tool main body and an uneven tip portion having an uneven shape. An uninterruptible tool comprising: the annular blade portion is detachably fixed to the main body male screw portion.
先端部において前記本体用雄ねじ部の回転軸方向に対し
略垂直方向に螺設された固定ねじ用雌ねじ部に螺挿され
る固定ねじにより、前記本体用雄ねじ部の先端部に前記
環状刃部が固定されることを特徴とする無停電工具。2. The uninterruptible tool according to claim 1, wherein the push-off screw is screwed at a substantially cylindrical tip of the male screw portion for the main body in a direction substantially perpendicular to the rotation axis direction of the male screw portion for the main body. An uninterruptible tool, wherein the annular blade portion is fixed to a distal end portion of the male screw portion for the main body by a fixing screw inserted into the female screw portion for a fixing screw provided.
先端部において前記雄ねじ部の略回転軸方向に螺設され
た固定ねじ用雌ねじ部に螺挿される固定ねじにより、前
記本体用雄ねじ部の先端部に前記環状刃部が固定される
ことを特徴とする無停電工具。3. The uninterruptible tool according to claim 1, wherein the push-off screw is a female screw for a fixing screw which is screwed in a substantially axial direction of the male screw at a polygonal tip of the male screw for the main body. An uninterruptible tool, wherein the annular blade portion is fixed to a distal end portion of the external thread portion for the main body by a fixing screw screwed into the portion.
記環状刃部の環の半径方向に螺設された固定ねじ用雌ね
じ部に螺挿される固定ねじにより、前記本体用雄ねじ部
の先端部に前記環状刃部が固定されることを特徴とする
無停電工具。4. The uninterruptible tool according to claim 1, wherein the push-off screw is screwed into a female screw portion for a fixing screw which is screwed in a side wall portion of the annular blade portion in a radial direction of a ring of the annular blade portion. An uninterruptible tool, wherein the annular blade portion is fixed to a distal end portion of the main body male screw portion by a fixing screw to be inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10281639A JP2000111580A (en) | 1998-10-02 | 1998-10-02 | Uninterruptible tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10281639A JP2000111580A (en) | 1998-10-02 | 1998-10-02 | Uninterruptible tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000111580A true JP2000111580A (en) | 2000-04-21 |
Family
ID=17641920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10281639A Pending JP2000111580A (en) | 1998-10-02 | 1998-10-02 | Uninterruptible tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000111580A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100704489B1 (en) * | 2005-09-09 | 2007-04-09 | 김동수 | The measuring system for electric power and the method of the measuring |
| KR101168060B1 (en) | 2011-02-14 | 2012-07-24 | 한국전력공사 | The equipment without interruptable power supply during replacing a single-phase current watt-hour meter |
-
1998
- 1998-10-02 JP JP10281639A patent/JP2000111580A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100704489B1 (en) * | 2005-09-09 | 2007-04-09 | 김동수 | The measuring system for electric power and the method of the measuring |
| KR101168060B1 (en) | 2011-02-14 | 2012-07-24 | 한국전력공사 | The equipment without interruptable power supply during replacing a single-phase current watt-hour meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20021126 |