JP4245362B2 - Covered through clamp - Google Patents

Covered through clamp Download PDF

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Publication number
JP4245362B2
JP4245362B2 JP2003022937A JP2003022937A JP4245362B2 JP 4245362 B2 JP4245362 B2 JP 4245362B2 JP 2003022937 A JP2003022937 A JP 2003022937A JP 2003022937 A JP2003022937 A JP 2003022937A JP 4245362 B2 JP4245362 B2 JP 4245362B2
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JP
Japan
Prior art keywords
electric wire
movable guide
contact blade
blade
screw shaft
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.)
Expired - Lifetime
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JP2003022937A
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Japanese (ja)
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JP2004235045A (en
Inventor
堅二 安孫子
睦 高階
直樹 相原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tohoku Electric Power Co Inc
Kitanihon Electric Cable Co Ltd
Original Assignee
Tohoku Electric Power Co Inc
Kitanihon Electric Cable Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tohoku Electric Power Co Inc, Kitanihon Electric Cable Co Ltd filed Critical Tohoku Electric Power Co Inc
Priority to JP2003022937A priority Critical patent/JP4245362B2/en
Publication of JP2004235045A publication Critical patent/JP2004235045A/en
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Publication of JP4245362B2 publication Critical patent/JP4245362B2/en
Anticipated expiration legal-status Critical
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Description

【0001】
【発明が属する技術分野】
本発明は、活線状態の架空被覆電線等を把持してこの電線を貫通する接触刃を備えた被覆貫通型クランプに関する。
【0002】
【従来の技術】
電線工事において、複数の電線を接続するときは、電線の被覆部分を剥ぎ取り、電線を露出して接続していた。しかし、被覆部分をその都度剥ぎ取る作業は煩雑であり、作業時間の無駄であった。また、皮はぎ工具を使用して電線導体を磨き接続させていた。そのため、この接続作業が問題であり、剥ぎ取り作業せずに電線を接触刃に接続するものが種々開発されている。
【0003】
例えば、被覆電線を把持する保持部とこの保持部に対向して配置した基台とからなるクランプ本体の基台の螺子孔に螺合して上下動する螺子棒の先端に接触電極を配置し、この螺子棒をクランプ本体の下端に配置した連結棒を回転して螺子棒を上下動させ、基台に設けた把持部と前記保持部とにより電線を把持し、前記接触電極を移動させる接続クランプがある(特許文献1)。
クランプ装置において電線芯線と接触刃とを接触させるものとして、作業者によって回転させるトルクミッターを介在させてねじ式駆動部材を回転させ、接触刃を電線芯線に接触させる際に、ねじ駆動部材に伝達される回転トルクが所定値以上になったときにトルクミッターが空回りするものがある。この接触刃はクランプ保持部側に単一の指針の接触が配置され、上下動するねじし機駆動部材側には断面凹形の電線保持部材が記載されている(特許文献2)。
【0004】
【特許文献1】
特許第3324029号公報
【特許文献2】
特開2002―305817号公報
【0005】
特許文献1の接触電極は円柱状に形成され、この上面に十字形状の凹溝を形成し、この凹溝の一辺に切削刃を形成し、この円柱状の接触電極を回転して(段落番号「0024」参照)切削刃によって電線を剥ぎ取るものである。また、特許文献2に記載される接触電極は保持部側に配置し、この針状の接触電極を電線に差込むものである。
このように従来の接触電極は先端に配置される接触刃は複数の接触刃を貫通クランプは開発されているが、機構が複雑であり、接触刃の電線への接触が不安定であった。
【0006】
【発明が解決しようとする課題】
本発明は、被覆電線の裸電線にする皮はぎ工程を必要とせず、簡易な構成によって電通させることができるものである。
本発明の課題は、簡易な構成による被覆貫通型クランプを提供することである。本発明の課題は溝付き接触刃の耐久性に優れる形状を備えたことを構成要件とする被覆貫通型クランプを提供することである。
【0007】
本発明の前記課題は、以下の構成によって達成できる。
クランプ本体の被覆電線を保持する保持部に対向して可動ガイドを配設するとともにこの可動ガイド両側端の押さえ部の間に出入する接触刃を配設し、保持した被覆電線側に前記接触刃を駆動する駆動部材を把持部に内蔵してなる被覆貫通型クランプにおいて、被覆電線を保持する面が電線のひれ部を嵌入可能なように凹部を形成した保持部と、長手方向に凹溝を形成して、先端に平行な2本の刃先を有し、被覆電線のひれ部を遊嵌する略U字形の形状とした電極である接触刃と、この接触刃の底面を先端で押圧し、前記可動ガイドを貫通する操作棒と、この操作棒を上下動に駆動し、前記可動ガイドに連接する後端に操作部を備えたねじ軸と、このねじ軸を内装する把持部と、を備え、前記ねじ軸の操作部を回転することにより可動ガイドをクランプ本体の前記保持部に接近、離反させ、この保持部と前記可動ガイドとによって被覆電線を把持し、前記ねじ軸による操作棒の駆動により電極の接触刃を駆動せしめ、前記保持部の凹部と前記可動ガイドとにより把持した被覆電線に接触刃を食い込ませるようにしたことを特徴とする被覆貫通型クランプである。
【0009】
本発明の前記課題は、前記接触刃の両刃先の外側の先端から底部にかけて二段傾斜部を備えた構成、または前記ねじ軸と把持部との間には絶縁部材を配設した構成によって達成できる。
【0010】
本発明は、確実に接触し、安定位置を保持することができる接触刃を備えた被覆貫通型クランプである。
特に、接触刃の凹溝部とクランプ本体の保持部のR部とにより被覆電線を確実に安定した位置に保持することが出来るばかりでなく、二枚の接触刃によって確実に安定して接触することができる。
【0011】
【発明に実施の形態】
本発明の被覆貫通型クランプについて図面に示す実施形態に基づいて説明する。図1は本発明の被覆貫通型クランプの概要を説明する内部機構を示す概略側面図である。図2は本発明の被覆貫通型クランプの正面図である。図3は本発明被覆貫通型クランプに採用した接触刃の拡大斜視図である。図4は本発明の被覆貫通型クランプの被覆電線を把持した状態を示す要部拡大側面図である。図5は図4の把持部部分を示す拡大正面図である。図6は本発明被覆貫通型クランプの実施形態の底面図である。
【0012】
図面に示されるように、クランプ本体1は上端の保持部2と下端の基台3とからなり、この保持部2は所定の厚みを有し、被覆電線4に接触する接面に凹部2aが形成されており、基台3は前記保持部2に対向して配置され、この基台3にねじ孔が穿ってあり、ねじ軸7が螺合してある。
【0013】
このクランプ本体1の内面の直線部分に沿って摺動し、中央部に矩形状の貫通孔を穿った可動ガイド5を配置し、この可動ガイド5の両側端に被覆電線4を下側から押圧するガイド5a,5aを有する。この可動ガイド5の貫通孔内に出没する接触刃6が配置してある。この接触刃6は可動ガイド5を上下に駆動するねじ軸7の中央に貫通した操作棒8によって昇降するようになっており、この操作棒8の先端に配置した端子台15によって前記接触刃6は押圧されるようになっている。9はボルト孔である。この接触刃6は中央部分に溝6dを有する断面U字形に形成された二枚の刃先6a、6aを備え、この外側面において、この刃先6aから底部6cにかけて二段傾斜6bになっており、刃は所定の厚さを備えている。
【0014】
ねじ軸7はクランプ本体1の基台3ののねじ孔に螺合し、このねじ軸の下端の操作部7aが配置してあり、この操作部7aの後端は六角形になっており、工具と係合するようになっている。このねじ軸7と一体に形成したカラー10が介在してあり、そのカラー10には軸方向に平行な長溝11aを穿ってあり、その外側に外筒11を配置し、ねじ軸7が回転自在に介装し、この長溝11aにはキー12が挿入してあり、クランプ本体1にお回転が防止されている。ねじ軸7と操作部7aとの連結部分やカラー10との間には絶縁材であるFRP13が配置してある。14は把持部で、内部のねじ軸7を摺動する外筒11を被覆するカバーである。
【0015】
このように構成されている本発明の被覆貫通型クランプの取り扱い操作について説明する。
クランプ本体1の保持部2と基台3の可動ガイド5との間に被覆電線4を配置し、操作部7aに工具を挿入して回転するとねじ軸7は回転して上昇せしめ、可動ガイド5のガイド5aによって保持部2との間で確実に把持し、芯線位置を定め、ねじ軸7の上昇に伴って操作棒8を上昇させて端子台15によって接触刃6を被覆電線4に真直ぐに食い込ませる。このとき接触刃6は回転しないからこの刃先6aが芯線に確実に接触する。
【0016】
ねじ軸7の操作部7aの後端に工具を嵌合して回転してねじ軸7を回転させ、ねじ軸7を上昇させて可動ガイド5を保持部2側に移動させてガイド5aによって被覆電線4を把持する。芯線の位置を確実に固定して端子台15を移動させて接触刃6を電線に貫通させる。この時2枚の接触刃によって電線の芯線に接触する。
被覆電線4のひれ部分は接触刃6のU字溝6d内に入るので邪魔にならず,芯線に刃先6aが接触する。この接触刃6が二段傾斜6bを有するから被覆電線4に確実に喰い込む。
【0017】
接触刃6が二枚刃になっているから強度があり、電極の長さもあるので損傷する恐れがない。接触刃6の形状により導体外形5mm〜導体サイズが太いもの、例えば、導体外形200mm2 のものでも対応できる。接触刃6はU字型になっているから耐久性に優れる。
【0018】
【発明の効果】
本発明の被覆貫通型クランプは接触刃が二枚刃になっているので、強度があり、二段形成であるから耐久性に優れる。しかも回転操作による外筒と内部ねじ軸との関係により確実に接触刃を上下動させることができる。電線のひれ部分は接触刃のU字溝内に入るので邪魔にならず,芯線に刃先が接触する。この接触刃が二段傾斜を有するから被覆電線に確実に喰い込む。
【図面の簡単な説明】
【図1】本発明の被覆貫通型クランプの概要を説明する内部機構を示す概略側面図である。
【図2】本発明の被覆貫通型クランプの正面図である。
【図3】本発明被覆貫通型クランプに採用した接触刃の拡大斜視図である。
【図4】本発明の被覆貫通型クランプの被覆電線を把持した状態を示す要部拡大側面図である。
【図5】図4の把持部部分を示す拡大正面図である。
【図6】本発明被覆貫通型クランプの実施形態の底面図である。
【符号の説明】
1 クランプ本体
2 保持部
3 基台
4 被覆電線
5 可動ガイド
6 接触刃
7 ねじ軸
8 操作棒
9 ボルト孔
10 カラー
11 外筒
12 キー
13 絶縁材(FRP)
14 把持部
15 端子台
[0001]
[Technical field to which the invention belongs]
The present invention relates to a covered through clamp having a contact blade that grips a live-wired aerial covered electric wire and penetrates the electric wire.
[0002]
[Prior art]
In wire construction, when connecting a plurality of wires, the covering portion of the wires was peeled off and the wires were exposed and connected. However, the work of stripping the covering portion each time is complicated and wastes work time. Moreover, the wire conductor was polished and connected using a peeling tool. Therefore, this connection operation is a problem, and various devices have been developed that connect an electric wire to a contact blade without performing a stripping operation.
[0003]
For example, a contact electrode is arranged at the tip of a screw rod that moves up and down by screwing into a screw hole of a base of a clamp body consisting of a holding part that holds a covered electric wire and a base that is arranged opposite to the holding part. Connection that moves the contact electrode by rotating the connecting rod arranged at the lower end of the clamp body to move the screw rod up and down, grasping the electric wire by the holding portion provided on the base and the holding portion There is a clamp (Patent Document 1).
In the clamp device, the wire core wire and the contact blade are brought into contact with each other. When a screw type drive member is rotated by interposing a torque mitter that is rotated by an operator, the contact blade is transmitted to the screw drive member when contacting the wire core wire. In some cases, the torque mitter rotates idly when the rotational torque generated exceeds a predetermined value. In this contact blade, a single pointer contact is arranged on the clamp holding portion side, and an electric wire holding member having a concave cross section is described on the screw driving member side that moves up and down (Patent Document 2).
[0004]
[Patent Document 1]
Japanese Patent No. 3324029 [Patent Document 2]
Japanese Patent Laid-Open No. 2002-305817
The contact electrode of Patent Document 1 is formed in a cylindrical shape, a cross-shaped concave groove is formed on the upper surface, a cutting blade is formed on one side of the concave groove, and the cylindrical contact electrode is rotated (paragraph number). (See "0024") The electric wire is peeled off by a cutting blade. Moreover, the contact electrode described in Patent Document 2 is disposed on the holding portion side, and the needle-like contact electrode is inserted into the electric wire.
As described above, the conventional contact electrode has a contact blade disposed at the tip, and a plurality of contact blades have been developed as penetrating clamps. However, the mechanism is complicated and the contact of the contact blade with the electric wire is unstable.
[0006]
[Problems to be solved by the invention]
The present invention does not require a peeling process for forming a bare wire of a covered electric wire, and can conduct electricity with a simple configuration.
The subject of this invention is providing the covering penetration type clamp by simple structure. The subject of this invention is providing the covering penetration type | mold clamp which makes it the structural requirement to have provided the shape which was excellent in the durability of a grooved contact blade.
[0007]
The said subject of this invention can be achieved by the following structures.
A movable guide is disposed opposite to the holding portion that holds the covered electric wire of the clamp body, and a contact blade that enters and exits between the pressing portions on both ends of the movable guide is disposed. In a covered through-type clamp in which a driving member that drives the grip is incorporated in a gripping part, a holding part in which a surface for holding a covered electric wire is formed so that a fin part of the electric wire can be inserted, and a groove in the longitudinal direction are formed. Forming a contact blade that is an electrode having two blade tips parallel to the tip and having a substantially U-shaped shape for loosely fitting the fin portion of the covered electric wire, and pressing the bottom surface of the contact blade with the tip, An operating rod that penetrates the movable guide, a screw shaft that drives the operating rod up and down, has an operating portion at the rear end that is connected to the movable guide, and a gripping portion that houses the screw shaft. The movable guide by rotating the operation part of the screw shaft Approaching the holding portion of the clamp body, is moved away, to grip the covered wire with the holding portion by said movable guide, driven to the contact blades of the electrode by driving the operating rod by the screw shaft, and the recess of the holding portion A covered through-type clamp, wherein a contact blade is bitten into a covered electric wire held by the movable guide .
[0009]
The object of the present invention is achieved by a configuration in which a two-step inclined portion is provided from the outer tip to the bottom portion of both blade tips of the contact blade, or a configuration in which an insulating member is provided between the screw shaft and the grip portion. it can.
[0010]
The present invention is a coated through-type clamp including a contact blade that can reliably contact and maintain a stable position.
In particular, not only can the covered wire be held in a stable position by the concave groove of the contact blade and the R portion of the holding part of the clamp body, but also a stable contact with the two contact blades. Can do.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The coated through-type clamp of the present invention will be described based on an embodiment shown in the drawings. FIG. 1 is a schematic side view showing an internal mechanism for explaining the outline of the coated through-type clamp of the present invention. FIG. 2 is a front view of the coated through-type clamp of the present invention. FIG. 3 is an enlarged perspective view of a contact blade employed in the coated through-type clamp of the present invention. FIG. 4 is an enlarged side view of the main part showing a state where the covered electric wire of the covered through-type clamp of the present invention is gripped. FIG. 5 is an enlarged front view showing the grip portion of FIG. FIG. 6 is a bottom view of an embodiment of the coated through-type clamp of the present invention.
[0012]
As shown in the drawing, the clamp body 1 is composed of a holding portion 2 at the upper end and a base 3 at the lower end. The holding portion 2 has a predetermined thickness, and a concave portion 2a is formed on a contact surface contacting the covered electric wire 4. The base 3 is formed so as to face the holding portion 2, a screw hole is formed in the base 3, and the screw shaft 7 is screwed.
[0013]
The movable guide 5 is slid along the straight portion of the inner surface of the clamp body 1 and a rectangular through hole is formed at the center, and the covered electric wire 4 is pressed from the lower side to both ends of the movable guide 5. Guides 5a and 5a. A contact blade 6 that appears and disappears in the through hole of the movable guide 5 is arranged. The contact blade 6 is moved up and down by an operation rod 8 penetrating through the center of a screw shaft 7 that drives the movable guide 5 up and down, and the contact blade 6 is moved by a terminal block 15 disposed at the tip of the operation rod 8. Is to be pressed. 9 is a bolt hole. The contact blade 6 includes two blade edges 6a and 6a formed in a U-shaped cross section having a groove 6d in the central portion, and has a two-step inclination 6b from the blade edge 6a to the bottom portion 6c on the outer surface. The blade has a predetermined thickness.
[0014]
The screw shaft 7 is screwed into the screw hole of the base 3 of the clamp body 1, and an operation portion 7a at the lower end of the screw shaft is disposed, and the rear end of the operation portion 7a has a hexagonal shape. Engage with the tool. A collar 10 formed integrally with the screw shaft 7 is interposed. The collar 10 is provided with a long groove 11a parallel to the axial direction. An outer cylinder 11 is disposed outside the collar 10 so that the screw shaft 7 is rotatable. The key 12 is inserted into the long groove 11a, and the clamp body 1 is prevented from rotating. An FRP 13 that is an insulating material is disposed between a connecting portion between the screw shaft 7 and the operation portion 7 a and the collar 10. Reference numeral 14 denotes a grip, which is a cover that covers the outer cylinder 11 that slides on the internal screw shaft 7.
[0015]
The handling operation of the coated through-type clamp of the present invention configured as described above will be described.
When the covered electric wire 4 is disposed between the holding portion 2 of the clamp body 1 and the movable guide 5 of the base 3 and a tool is inserted into the operation portion 7a and rotated, the screw shaft 7 rotates and rises, and the movable guide 5 The guide 5 a is securely gripped with the holding portion 2, the core wire position is determined, the operating rod 8 is raised as the screw shaft 7 is raised, and the contact blade 6 is straightened to the covered wire 4 by the terminal block 15. Encroach on. At this time, since the contact blade 6 does not rotate, the blade edge 6a reliably contacts the core wire.
[0016]
A tool is fitted to the rear end of the operating portion 7a of the screw shaft 7 and rotated to rotate the screw shaft 7, and the screw shaft 7 is raised to move the movable guide 5 to the holding portion 2 side so as to be covered with the guide 5a. The electric wire 4 is gripped. The position of the core wire is securely fixed, the terminal block 15 is moved, and the contact blade 6 is passed through the electric wire. At this time, it contacts with the core wire of an electric wire with two contact blades.
Since the fin part of the covered wire 4 enters the U-shaped groove 6d of the contact blade 6, it does not get in the way, and the blade edge 6a contacts the core wire. Since this contact blade 6 has the two-step inclination 6b, it reliably bites into the covered electric wire 4.
[0017]
Since the contact blade 6 is a two-blade blade, it is strong, and there is no risk of damage due to the length of the electrode. Depending on the shape of the contact blade 6, the conductor outer diameter is 5 mm to a conductor having a large conductor size, for example, the conductor outer diameter is 200 mm 2. Can be used. Since the contact blade 6 is U-shaped, it has excellent durability.
[0018]
【The invention's effect】
Since the coated through-type clamp of the present invention has two blades as the contact blades, it has strength and is excellent in durability because it is formed in two steps. In addition, the contact blade can be reliably moved up and down by the relationship between the outer cylinder and the internal screw shaft by the rotation operation. Since the fin portion of the electric wire enters the U-shaped groove of the contact blade, it does not get in the way, and the blade tip contacts the core wire. Since this contact blade has a two-step inclination, it reliably bites into the covered electric wire.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an internal mechanism for explaining an outline of a coated through-type clamp according to the present invention.
FIG. 2 is a front view of the coated through-type clamp of the present invention.
FIG. 3 is an enlarged perspective view of a contact blade employed in the coated through-type clamp of the present invention.
FIG. 4 is an enlarged side view of an essential part showing a state where a covered electric wire of a through-hole clamp according to the present invention is gripped.
FIG. 5 is an enlarged front view showing a grip portion of FIG. 4;
FIG. 6 is a bottom view of an embodiment of the coated through-type clamp of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Clamp body 2 Holding part 3 Base 4 Covered electric wire 5 Movable guide 6 Contact blade 7 Screw shaft 8 Operation rod 9 Bolt hole 10 Collar 11 Outer cylinder 12 Key 13 Insulation material (FRP)
14 Grip part 15 Terminal block

Claims (2)

クランプ本体の被覆電線を保持する保持部に対向して可動ガイドを配設するとともにこの可動ガイド両側端の押さえ部の間に出入する接触刃を配設し、保持した被覆電線側に前記接触刃を駆動する駆動部材を把持部に内蔵してなる被覆貫通型クランプにおいて、
被覆電線を保持する面が電線のひれ部を嵌入可能なように凹部を形成した保持部と、
長手方向に凹溝を形成して、先端に平行な2本の刃先を有し、被覆電線のひれ部を遊嵌する略U字形の形状とした電極である接触刃と、
この接触刃の底面を先端で押圧し、前記可動ガイドを貫通する操作棒と、
この操作棒を上下動に駆動し、前記可動ガイドに連接する後端に操作部を備えたねじ軸と
このねじ軸を内装する把持部と、
を備え、前記ねじ軸の操作部を回転することにより可動ガイドをクランプ本体の前記保持部に接近、離反させ、この保持部と前記可動ガイドとによって被覆電線を把持し、前記ねじ軸による操作棒の駆動により電極の接触刃を駆動せしめ、前記保持部の凹部と前記可動ガイドとにより把持した被覆電線に接触刃を食い込ませるようにしたことを特徴とする被覆貫通型クランプ。
A movable guide is disposed opposite to the holding portion that holds the covered electric wire of the clamp body, and a contact blade that enters and exits between the pressing portions on both ends of the movable guide is disposed. In a cover penetration type clamp in which a driving member for driving is incorporated in a gripping part,
A holding portion in which a concave portion is formed so that the surface holding the covered electric wire can fit the fin portion of the electric wire;
A contact blade that is a substantially U-shaped electrode that has a concave groove in the longitudinal direction, has two cutting edges parallel to the tip, and loosely fits the fin portion of the covered electric wire;
An operation rod that presses the bottom surface of the contact blade with a tip and penetrates the movable guide;
A screw shaft that drives the operating rod vertically and has an operating portion at the rear end connected to the movable guide; and a gripping portion that houses the screw shaft;
The movable guide is moved closer to and away from the holding portion of the clamp body by rotating the operating portion of the screw shaft, the covered electric wire is gripped by the holding portion and the movable guide, and the operating rod by the screw shaft is provided. The coated through-type clamp is characterized in that the contact blade of the electrode is driven by driving and the contact blade is bitten into the covered electric wire gripped by the concave portion of the holding portion and the movable guide.
前記接触刃の二枚の刃先に直交する外側面の刃先から底部に沿って緩やかな二段傾斜面を形成したことを特徴とする請求項1に記載の被覆貫通型クランプ。2. The coated through-type clamp according to claim 1 , wherein a gentle two-step inclined surface is formed along a bottom portion from a blade edge of an outer surface perpendicular to the two blade edges of the contact blade.
JP2003022937A 2003-01-31 2003-01-31 Covered through clamp Expired - Lifetime JP4245362B2 (en)

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