JPH0751737Y2 - Clip terminal device for plug-in equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip terminal device for a plug-in device used for branching from a bus duct.

[0002]

2. Description of the Related Art A conventional plug-in device having an improved clip terminal device is shown in FIG. 4 (Japanese Utility Model Publication No. 57-1550).
5 and FIG. 5 (Jitsuko Sho 57-17621). In these devices, the base portion 4 of the clip terminal 5 is integrally formed with the terminal main body portion into a plate shape to form a branch extraction portion.
Has a slot-shaped support hole 6 into which a plug-in device box 31 is inserted, and is attached to the clip protruding surface of the plug-in device box 31. The load-side terminal 8 is attached to the plate-shaped portion 4 of the clip terminal protruding from the holder 7. Bolt 12 and nut 1
4 is a clip terminal device that is tightly connected at 4. In the device shown in FIG. 4, the edge of the load-side terminal 8 is pressed and fixed to the holder 7 as vertical movement preventing means for the clip terminal 5, and in the device shown in FIG. The slot-shaped support hole 6 provided in the electric insulator holder 7 is formed to have substantially the same shape and size as the cross section of the plate-shaped portion 4 of the clip terminal 5. The plate-shaped portion 4 of the clip terminal 5 is inserted into the hole 6 of the holder 7 until the expansion step portion 2 of the clip terminal hits the hole edge, and the plate-shaped portion 4 protruding on the opposite side is opened to a knife switch or for disconnection of wiring. The load-side terminal 8 such as a container and the like are overlapped with each other, and the bolt 12 is inserted through the plate-shaped portion 4, the terminal 8 and the vertical movement blocking piece 10, etc.
The clip terminal device is constructed by tightening at 4.

[0003]

Although the improved clip terminal device has a simplified structure and is rationalized in its assembly, it has been found that the following problems still occur when it is used for a long period of time. That is, when this clip terminal device is used for a long period of time, the peripheral portion 9 of the slot-shaped support hole 6 provided in the insulating holder 7 that contacts the base of the expansion step portion 2 of the clip terminal 5 receives the heat of the clip. It deteriorates and gradually transforms to become roundish. Then, the expansion step of the clip is loosely clamped. Along with that, the elasticity of the expansion step of the clip itself is reduced, and as a result, the clamping pressure of the clip that clamps the conductor of the bus duct is reduced, and abnormal heat is generated at the clamp part between the conductor and the clip as a whole. Will be done. An object of the present invention is to solve the above-mentioned problems, to maintain the elasticity of the expanded step portion of the clip itself, and to endure long-term use.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a clip terminal integrally formed with a plate-shaped branch extraction portion, and a slot-shaped support hole formed in an electric insulator holder. its expanded stepped portion of the clip pin is inserted until it abuts against the edge of the support hole, the overlapping load terminal to the plate-like branch preparative out section projecting from the holder, the load and the plate-shaped branch lead-out portion In the clip terminal device of the plug-in device of the bus duct in which the side terminals are tightly fixed with bolts and nuts that penetrate them, in the expansion step portion of the clip terminal,
Cross section and the metal or ceramic washer is provided a slot-type holes of substantially the same shape and size of the plate-shaped branch taken out section is fitted abutment, the clip terminal is fixed to the holder by vertical movement inhibiting means A clip terminal device for a plug-in device. The washer used in the present invention is heat resistant and is not particularly limited as long as it is a metal or ceramic whose rigidity does not change due to heat generation due to long-term use of the clip, and iron or the like is preferable.

[0005]

[Action] The metal or ceramic washer heat resistance is fitted in the plate-shaped branch lead-out portion, by abutting the expanded stepped portion of the clip, even going heat generation temperature rise of the clip, expansion of the clip itself The elasticity of the open step is maintained and there is no problem in long-term use.

[0006]

【Example】

[Embodiment 1] An example of an embodiment of the clip terminal device of the present invention is shown in FIGS. FIG. 1 is a partial cross-sectional view of the clip terminal device connected to a bus duct, and FIG. 2 is a perspective view of the main part thereof. 1 and 2, the clip terminal 5 is integrally formed with a base portion as a plate-shaped branch extraction portion 4, and the plate-shaped portion 4 has an iron washer 1 having a through hole 6 having substantially the same shape and size as its cross section. Then, it penetrates through the holder 7 made of an electric insulator and projects to the opposite side, and is tightly fixed to the load side terminal 8 with the bolt 12 and the nut 14. The iron washer 1 and the holder 7 are pressed against the expansion step portion 2 of the clip terminal 5 so that the washer 1 abuts, and the tip of the load side terminal 8 is butted against the opposite side of the holder 7 and tightened. The entire clip is firmly fixed. In the figure, 3 is a conductor (bus bar) in the bus duct. This clip terminal can be incorporated and used in the conventional improved clip terminal device shown in FIG.

[Embodiment 2] FIG. 3 shows another embodiment of the present invention. In FIG. 3, an L-shaped vertical movement blocking piece 1
0 is used, and the upper portion thereof is brought into close contact with the plate-like branch lead-out portion 4 of the clip terminal and the load-side terminal 8, and the bolt 12 and nut
The clip terminal 5 is fixed to the holder 7 without loosening by tightly fixing with. Descriptions of other reference numerals are the same as those in FIGS. 1 and 2. This clip terminal can be incorporated and used in the conventional improved clip terminal device shown in FIG.

[0008]

The clip terminal device of the present invention, in which a washer made of heat-resistant metal or ceramic is brought into contact with the expansion step, is used even if the clip periphery of the holder is deteriorated due to heat generation of the clip due to long-term use. By this, the elasticity of the expanded step portion of the clip itself is maintained and it can withstand long-term use.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view of the clip terminal device of the present invention connected to a bus duct.

FIG. 2 is a perspective view of a main part of FIG.

FIG. 3 is a partial cross-sectional front view of another embodiment of the clip terminal device of the present invention.

FIG. 4 is a cross-sectional front view of a plug-in device including a conventional clip terminal device connected to a bus duct.

FIG. 5 is a cross-sectional front view of another example of the plug-in device including the conventional clip terminal device.

[Explanation of sign]

1 heat-resistant washer 2 clips expanded stepped portion 3 conductors (bus bars) 4 plate branched preparative out portion 5 clip terminal 6 slotted support hole 7 portion 10 clip vertically to deterioration of the holder 8 load terminal 9 Holder clip terminal pin Motion prevention piece 12 Bolt 14 Nut 31 Plug-in device box

Claims (1)

[Scope of utility model registration request] 1. A clip terminal integrally formed with a plate-shaped branch extraction portion is provided in a slot-shaped support hole provided in an electric insulator holder, and an expansion step portion of the clip terminal is provided at an edge of the support hole. insert until abutment, the overlapping load terminal to a separatory岐取detecting portion projecting from the electrical insulator made holder,
The branch lead-out portion of the load terminal, the clip terminal device of the plug-instrument bus duct was clamped fixed with bolts and nuts through the both the widening step of the clip terminal, cross minute <br/>岐取out unit A slot-like hole of approximately the same shape and size as the surface was provided
A clip terminal device for a plug-in device, characterized in that a metal or ceramic washer is fitted and abutted.