JPH0326010U

JPH0326010U -

Info

Publication number: JPH0326010U
Application number: JP8731189U
Authority: JP
Priority date: 1989-07-25
Filing date: 1989-07-25
Publication date: 1991-03-18

Description

[Brief explanation of drawings]

第１図は本考案の実施例を一部切り欠いて示し
た正面図、第２図は同実施例のブツシング装置に
第１の電線（本線）を接続した状態を一部切り欠
いて示した側面図、第３図は同実施例のブツシン
グ装置から碍子キヤツプを取り除いた状態を示し
た上面図、第４図は同実施例のブツシング装置に
第２の電線（仮線）を取付けた状態を示す横断面
図、第５図は第２の電線挿通孔側から端子金具を
見て主として端子金具の中央部を示した部分拡大
図、第６図は第５図の−線断面図、第７図は
本考案のブツシング装置が取付けられた変圧器に
おいて低圧側の通電を継続した状態で本線の取替
え作業を行う場合のステツプを示した説明図、第
８図は従来例を一部切り欠いて示した正面図、第
９図は第８図のブツシング装置に電線を接続した
状態を示した要部断面図である。１０……碍管、１１……頭部、１２……首下部
、１３……凹部、１６……端子金具、１６ｂ_１…
…第１の芯線挿入孔、１６ｂ_２……スリツト、１
６ｂ_３……芯線把持部、１６ｂ_６……テーパ面、
１６ａ_１……第１の芯線挿入孔、１６ａ_４……雄
ネジ部、１７……第１の電線、１７ａ……芯線、
１８……第２の電線、１８ａ……芯線、１９……
接触金具、２６……第２の電線挿通孔、２７……
ゴムブツシユ、２８……ゴム栓、３０……碍子キ
ヤツプ、３１……碍子つまみ、３１ａ……第１の
電線挿通孔、３３……碍子キヤツプ取付金具、３
３ａ_１……雌ネジ部、３３ａ_２……テーパ面、Ｌ
……本線、Ｌ′……仮線。 Figure 1 is a partially cutaway front view of an embodiment of the present invention, and Figure 2 is a partially cutaway diagram showing the bushing device of the same embodiment with the first electric wire (main wire) connected. 3 is a top view showing the bushing device of the same embodiment with the insulator cap removed, and FIG. 4 is a top view showing the bushing device of the same embodiment with the second electric wire (temporary wire) attached. FIG. 5 is a partially enlarged view mainly showing the center of the terminal fitting when viewed from the second wire insertion hole side; FIG. 6 is a cross-sectional view taken along the line -- in FIG. The figure is an explanatory diagram showing the steps for replacing the main line while the low-voltage side continues to be energized in a transformer equipped with the bushing device of the present invention. Figure 8 is a partially cutaway view of the conventional example. The front view shown and FIG. 9 are sectional views of essential parts showing a state in which electric wires are connected to the bushing device of FIG. 8. 10...Insulator tube, 11...Head, 12...Neck lower part, 13...Recess, 16...Terminal fitting, 16b ₁ ...
...First core wire insertion hole, 16b ₂ ...Slit, 1
6b ₃ ... Core wire gripping part, 16b ₆ ... Tapered surface,
16a ₁ ...first core wire insertion hole, 16a ₄ ...male thread part, 17...first electric wire, 17a...core wire,
18...Second electric wire, 18a...Core wire, 19...
Contact fitting, 26... Second electric wire insertion hole, 27...
Rubber bush, 28...Rubber stopper, 30...Insulator cap, 31...Insulator knob, 31a...First electric wire insertion hole, 33...Insulator cap mounting bracket, 3
3a ₁ ...Female thread part, 33a ₂ ...Tapered surface, L
...Main line, L'...Temporary line.

Claims

[Claims for Utility Model Registration] (1) An insulator tube having a recess at one end that opens in the axial direction, a terminal fitting provided in the recess, and a removable insulator cap that closes the opening of the recess. In the bushing device, the insulator cap consists of an insulator knob and a cap attachment fitting fixed to the inside of the insulator knob, and the first insulator cap extends in the axial direction and extends through the axial center of the insulator knob. A wire insertion hole is provided, and a second wire is inserted through the peripheral wall surrounding the recess of the insulator tube.
a wire insertion hole is provided, and the terminal fitting has a base fixed to the bottom of the recess of the insulator tube, and a head having a rear end fixed to the base and extending concentrically within the recess. a first core wire insertion hole for receiving a core wire of a first electric wire inserted into the insulator cap through the first wire insertion hole in the shaft core of the head of the terminal fitting; At the base of the second
A second core wire insertion hole is provided for receiving a core wire of a second electric wire inserted into the inside of the insulator tube through the wire insertion hole, and a slit extending in the radial direction and the axial direction is formed in the head of the terminal fitting. the head is divided into a plurality of core wire gripping parts by the slit, a male screw part is formed on the outer periphery of the end of the head of the terminal fitting on the base side, and the cap mounting fitting is attached to the terminal fitting. It has a hole for receiving the head, and a female thread is formed on the inner periphery of one end of the hole to be screwed into the male thread, and the other end of the cap mounting bracket has a female thread on the inner periphery of the hole. , when the female threaded portion is screwed into the male threaded portion and the cap mounting bracket is screwed toward the insulator tube, it comes into contact with the plurality of core wire gripping portions and at least a portion of each gripping portion is moved in the radial direction. A bushing device characterized in that a tightening part is formed to be displaced inward, and a contact fitting that contacts the core of the second electric wire is provided in the second core wire insertion hole. (2) The bushing device according to claim 1, wherein the first wire insertion hole and the second wire insertion hole are provided so that their axes are orthogonal to each other. (3) The outer periphery of the tip of the head of the terminal fitting is tapered so that the diameter gradually decreases toward the insulator cap, and the tightening portion is attached to the tip of the head of the terminal fitting. The bushing device according to claim 1 or 2, wherein the bushing device has a tapered surface that comes into contact with the outer periphery.