JPS6348146B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a terminal device.

[Conventional technology]

Conventionally, for example, Utility Model Application Publication No. 51-58385 discloses a method in which a terminal plate is placed between one piece of the auxiliary plate and the opposing piece, a terminal screw is screwed into one piece of the auxiliary plate, and the tip of the terminal screw is pressed against the terminal plate. This allows the terminal screw to pull one piece of the auxiliary plate toward the head and the opposing piece to approach the terminal board, thereby making it possible to lock the connecting conductor between the locking body supported by the opposing piece and the terminal board. ing.

[Problem to be solved by the invention]

However, this terminal device does not have an insertion window in the head of the terminal screw for connecting another connecting conductor, and even if it is possible to connect another connecting conductor to the head of the terminal screw, the connecting conductor cannot be connected to the head of the terminal screw. When the screws are tightened, the auxiliary plate cannot be drawn toward the head side due to the interposition of the connecting conductor, and the opposing piece cannot approach the terminal board either, so the locking body supported by the opposing piece of the auxiliary plate and There was a drawback that the connecting conductor could not be locked between the terminal board and the terminal board.

Therefore, an object of the present invention is to provide a terminal device in which even if another connecting conductor is screwed onto the head of a terminal screw, the other connecting conductor can be locked by a locking fitting.

[Means to solve the problem]

The terminal device of the present invention includes a terminal box having an opening on the top surface and an upper connection conductor insertion window and a lower connection conductor insertion window at the upper and lower portions of the side surface, and a terminal box inside the terminal box and inside the upper connection conductor insertion window. a U-shaped terminal board having a plate surface facing the opening, and a U-shaped terminal board having one piece on the opening side of the terminal board and a facing piece between the terminal plate and the lower connection conductor insertion window; A square-shaped auxiliary plate, and a lower connecting conductor placed between the opposing piece of this auxiliary plate and the bottom of the terminal box and inserted through the lower connecting conductor insertion window is pressed to the opposite side or the bottom side. A locking fitting is provided, a screw insertion hole is formed in the one piece of the auxiliary plate, and a screw hole opposite to the screw insertion hole is formed in the terminal plate, and the upper part is inserted through the upper connection conductor insertion window. Screwing the tip of a terminal screw having a head for tightening the connecting conductor into the screw hole through the screw insertion hole, and tightening the piece to the terminal board with the head of the terminal screw via the upper connecting conductor. Accordingly, the opposing piece is brought close to the locking metal fitting, and the lower connecting conductor can be locked by the locking metal fitting.

[Effect]

According to the configuration of this invention, when one piece of the auxiliary plate is screwed with the head of the terminal screw, one piece of the auxiliary plate is pressed against the terminal plate, and the opposing piece of the auxiliary plate approaches the locking metal fitting, so that the locking metal fitting is attached. When the terminal screw is loosened, the opposing piece of the auxiliary plate can be separated from the locking metal fitting, so the pressing force of the locking metal fitting against the lower connecting conductor is removed, and the lock can be unlocked. Additionally, when the upper connecting conductor is screwed onto the head of the terminal screw, one piece of the auxiliary plate is pressed against the terminal board via the upper connecting conductor due to the tightening of the terminal screw, so when the upper connecting conductor is not connected, The opposing piece of the auxiliary plate is positioned at the same position. Therefore, even if the upper connecting conductor is screwed onto the head of the terminal screw, the lower connecting conductor can be locked by the locking metal fitting.

〔Example〕

A first embodiment of this invention will be described based on FIGS. 1 and 2. That is, this terminal device includes a terminal box 9 having an opening 1 on the top surface 8a and an upper connecting conductor insertion window 2 and a lower connecting conductor insertion window 19 at the upper and lower portions of the side surface 8b, and A terminal board 11 that is placed inside the connection conductor insertion window 2 and whose plate surface faces the opening 1, and this terminal board 11.
A U-shaped auxiliary plate 13 having one piece 14 on the opening 1 side and a facing piece 17 between the terminal plate 11 and the lower connection conductor insertion window 19, the facing piece 17 of this auxiliary plate 13, and the terminal box 9. A locking fitting 18 is provided between the bottom surface 9a of the auxiliary plate 13 and a locking fitting 18 for pressing the lower connecting conductor 7 inserted through the lower connecting conductor insertion window 19 toward the opposing piece 17. 3 and a screw hole 12 facing the screw insertion hole 3 is formed in the terminal board 11, and the tip 6 of the terminal screw 16 has a head 5 for tightening the upper connecting conductor 4 inserted through the upper connecting conductor insertion window 2. Screw insertion hole 3
By screwing the piece 14 into the screw hole 12 through the upper connecting conductor 4 and tightening the piece 14 to the terminal board 11 with the head 5 of the terminal screw 16, the opposing piece 17 is brought close to the locking fitting 18, and the lock is secured. The lower connecting conductor 7 can be locked by the metal fitting 18.

The terminal box 9 is constructed at the end of the breaker stand, and is formed by a side wall 10 and an outer wall 20 of the breaker stand.

The screw hole 12 of the terminal plate 11 may be formed by fitting a nut into the hole.

Upper connection conductor 4 screwed into terminal screw 16
Examples include electric wires, crimp terminals, and bars.

Reference numeral 15 denotes terminal washers 15 and 18a interposed between the head 5 of the terminal screw 16 and the piece 14 of the auxiliary plate 13.
18b is the retaining blade of the lock fitting 18, and 18b is the lock fitting 1.
8 contact surface.

According to this embodiment, when one piece 14 of the auxiliary plate 13 is screwed with the head 5 of the terminal screw 16, the one piece 14 of the auxiliary plate 13 is pressed against the terminal plate 11, and the opposing piece 17 of the auxiliary plate 13 is locked. Since it is close to the metal fitting 18, the lower connecting conductor 7 can be locked by the locking metal fitting 18, and when the terminal screw 16 is loosened, the opposing piece 17 of the auxiliary plate 13 can be separated from the locking metal fitting 18, so that the lower connecting conductor 7 can be locked by the locking metal fitting 18. The pressing force of the lock fitting 18 against 7 is removed and the lock can be unlocked. Also, terminal screw 1
When the upper connecting conductor 4 is screwed to the head 5 of the terminal screw 16, one piece 14 of the auxiliary plate 13 is pressed against the terminal plate 11 via the upper connecting conductor 4 by screwing the terminal screw 16, so that the upper connecting conductor 4 The opposite piece 17 of the auxiliary plate 13 is placed in the same position as when it is not connected.
is positioned. Therefore, even if the upper connecting conductor 4 is screwed onto the head 5 of the terminal screw 16, the lower connecting conductor 7 can be locked by the locking fitting 18.

As a result, this terminal device can be applied to household and industrial uses with common terminal specifications, and because it can be unified, product types can be consolidated, and there are great manufacturing advantages.

A second embodiment of the invention is shown in FIGS. 3 and 4. That is, this terminal device has the terminal board 21
The end of the locking fitting 18 is bent laterally into a square shape (FIG. 4a) or a U-shape (FIG. 4b), and the lower piece 22 supports the bottom surface 9a side of the lock fitting 18. This is similar to the first embodiment.

A third embodiment of the invention is shown in FIGS. 5 and 6. That is, this terminal device has the terminal board 23
The end of the plate is folded back vertically into a U-shape to form an insertion hole 24 corresponding to the lower connection conductor insertion window 19, and the auxiliary plate 25 is formed into a C-shape (FIG. 6a) or a U-shape (FIG. 6b). Bend it and hang it on the terminal plate 23, and then attach the retaining blade 18a and the contact surface 18b of the locking fitting 18.
is directed toward the lower piece 22 side of the terminal plate 23, and the other configurations are the same as in the first embodiment. In this case, the locking fitting 18 presses the lower connection conductor 7 toward the bottom surface 9a. Furthermore, when the terminal screw 16 is loosened, the facing piece 17 of the auxiliary plate 25 that presses the back part 18c of the locking metal fitting 18 can be moved upward, so that the biting of the retaining blade 18a can be released.

〔Effect of the invention〕

According to the terminal device of the present invention, when one piece of the auxiliary plate is screwed with the head of the terminal screw, one piece of the auxiliary plate is pressed against the terminal plate, and the opposing piece of the auxiliary plate approaches the locking fitting, so that the lock can be locked. It becomes possible to lock the lower connecting conductor with the metal fitting, and when the terminal screw is loosened, the opposing piece of the auxiliary plate can separate from the locking metal fitting, so the pressing force of the locking metal fitting against the lower connecting conductor is removed, and the lock can be unlocked. . Additionally, when the upper connecting conductor is screwed onto the head of the terminal screw, one piece of the auxiliary plate is pressed against the terminal board via the upper connecting conductor due to the tightening of the terminal screw, so when the upper connecting conductor is not connected, The opposing piece of the auxiliary plate is positioned at the same position. Therefore, even if the upper connecting conductor is screwed onto the head of the terminal screw, the lower connecting conductor can be locked by the locking fitting.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the first embodiment of the invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a sectional view of the second embodiment, FIG. 4 is a perspective view of its terminal board, and FIG. The figure is a sectional view of the third embodiment, and FIG. 6 is a perspective view of its auxiliary plate. 1... Opening, 2... Upper connection conductor insertion window, 3...
...Screw insertion hole, 4...Top connecting conductor, 5...Head, 6...Tip, 7...Lower connecting conductor, 8a...
Top surface, 8b... Side surface, 9... Terminal box, 9a... Bottom surface, 11... Terminal board, 12... Screw hole, 13...
Auxiliary plate, 14...One piece, 16...Terminal screw, 17
...Opposing piece, 18...Lock fitting, 19...Lower connection conductor insertion window.

Claims (1)

[Scope of Claims] 1. A terminal box having an opening on the top surface and having an upper connection conductor insertion window and a lower connection conductor insertion window at the upper and lower portions of the side surface, and a terminal box inside the terminal box and inside the upper connection conductor insertion window. a U-shaped terminal board having a plate surface facing the opening, and a U-shaped terminal board having one piece on the opening side of the terminal board and a facing piece between the terminal plate and the lower connection conductor insertion window; A square-shaped auxiliary plate, and a lower connecting conductor placed between the opposing piece of this auxiliary plate and the bottom of the terminal box and inserted through the lower connecting conductor insertion window is pressed to the opposite side or the bottom side. A locking fitting is provided, a screw insertion hole is formed in the one piece of the auxiliary plate, and a screw hole opposite to the screw insertion hole is formed in the terminal plate, and the upper part is inserted through the upper connection conductor insertion window. Screwing the tip of a terminal screw having a head for tightening the connecting conductor into the screw hole through the screw insertion hole, and tightening the piece to the terminal board with the head of the terminal screw via the upper connecting conductor. The terminal device is characterized in that the opposing piece is brought close to the locking metal fitting, so that the lower connecting conductor can be locked by the locking metal fitting. 2. The terminal board is U-shaped or square-shaped, one piece of which is provided with the terminal screw to tighten one piece of the auxiliary plate, and the locking fitting is inserted between the lower piece of the terminal plate and the opposing piece of the auxiliary plate. A terminal device according to claim 1 of the appended claims.