JPH0334054Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to a terminal device used in a distribution board or the like.

[Background technology]

FIG. 3 is a perspective view showing the main internal structure of a general residential distribution board. In this distribution board, each branch breaker 21 and distribution line 22 attached to the base 20 are
The crimp terminal portion 22a has branch portions 23a on both sides.
A long strip-shaped terminal plate 23 and a terminal screw 2 formed with
They are connected via a terminal device 25 consisting of 4.

Conventionally, the terminal device 25 is constructed as shown in FIGS. 4 and 5. That is, in this terminal device 25, a tapped screw portion 23b is formed near the end of the terminal plate 23, and the crimp terminal portion 22 is
The terminal screw 24 with the spring washer 26 inserted through the spring washer 26 is screwed onto the threaded portion 23b.

In this conventional example, since the terminal board 23 is made of a relatively soft metal such as copper, there is a problem that the terminal screw 24 bites diagonally into the threaded portion 23b, causing a connection failure, as shown in FIG. There is a drawback that the portion 23b tends to be defective.

FIGS. 7 and 8 show the structure of another conventional terminal device 25 that solves the above-mentioned problem. In this terminal device 25, a nut 27 is attached to the base 20, and a screw insertion hole 23c formed in the terminal plate 23 instead of the screw portion 23b and the crimp terminal portion 2
2a and a spring washer 26, the terminal screw 24 is screwed into the nut 27.

In this conventional example, the terminal screw 24 is screwed into the nut 27, so the above-mentioned problem does not occur, but the nut attachment part 20a must be formed on the base 20, which complicates the structure and increases the manufacturing cost. It has the disadvantage of being high.

[Purpose of invention]

The purpose of this invention is to provide a terminal device that has a simple structure and can ensure reliable connection.

[Disclosure of invention]

The terminal device of this invention includes a U-shaped terminal board in which a screw insertion hole is provided in the U-shaped upper piece and a screw hole coaxial with the screw insertion hole is provided in the U-shaped lower piece, and the screw insertion hole is inserted from one side of the upper side. and a terminal screw that passes through the terminal screw and is screwed into the screw hole.

According to the configuration of this invention, the terminal screw is passed through the screw insertion hole and screwed into the screw hole, so that the screw insertion hole serves as a guide when screwing the terminal screw into the screw hole. Therefore, the terminal screw does not dig into the screw hole obliquely, and the connection between the conductor to be connected and the U-shaped terminal plate can always be made reliably.

Embodiment The structure of an embodiment of this invention is shown in Figures 1 and 2.
This will be explained based on the diagram. FIG. 1 is a sectional view showing the structure of this embodiment, and FIG. 2 is a perspective view thereof. The terminal device of this embodiment includes a U-shaped terminal plate 3 having a screw insertion hole 1 in the U-shaped upper piece and a screw hole 2 coaxial with the screw insertion hole 1 in the U-shaped lower piece; A terminal screw 4 is provided which passes through the screw insertion hole 1 and is screwed into the screw hole 2.

In this embodiment, the screw hole 2 is formed by performing so-called stretch flanging in the direction opposite to the screw insertion hole 1, and then tapping the inner surface thereof. is formed by applying it in the direction of the screw hole 2. Also,
A first bent part 7 and a second bent part 8 bent at 90 degrees are formed in the intermediate part between the screw hole 2 and the screw insertion hole 1, so that the central axis of the screw hole 2 and the central axis of the screw through hole 1 are aligned. I'm letting you do it.

As shown in FIG. 1, in this embodiment, after the spring washer 5 and crimp terminal 6 are inserted into the screw shaft of the terminal screw 4, the terminal screw 4 is passed through the screw insertion hole 1 and screwed into the screw hole 2. and attach the crimp terminal 6 to the U-shaped terminal plate 3.
Press it against the Therefore, when screwing the terminal screw 4 into the screw hole 2, the screw insertion hole 1 is inserted into the terminal screw 4.
This serves as a guide to vertically guide the terminal screw 4 into the screw hole 2, so that the terminal screw 4 does not bite diagonally into the screw hole 2 and cause a connection failure as in the conventional example. Further, by bending the U-shaped terminal plate 3, an elastic force is exerted, which also has the effect of preventing the terminal screw 4 from loosening.

This invention can of course be used in general residential distribution boards as shown in Figure 3, but
It can also be applied to other electrical equipment.

[Effect of idea]

The terminal device of this invention has a very simple structure in which a terminal screw is screwed into a U-shaped terminal plate in which a screw hole and a screw through hole are formed, so it can be manufactured at low cost, and the terminal device can be manufactured at low cost. When screwing a screw into a screw hole, the screw through hole guides the terminal screw perpendicularly to the screw hole, so the terminal screw does not dig into the screw hole diagonally, and the connection between the conductor to be connected and the U-shaped terminal board is always ensured. can be done.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the configuration of an embodiment of this invention, FIG. 2 is an exploded perspective view of the embodiment shown in FIG. 1,
Fig. 3 is a perspective view showing the main internal structure of a general residential distribution board; Fig. 4 is an exploded perspective view showing the structure of a conventional example; Fig. 5 is a partially cutaway front view showing the structure of a conventional example; Figure 6 is a diagram to explain the problem of the conventional example.
FIG. 7 is an exploded perspective view showing the structure of another conventional example, and FIG. 8 is a partially cutaway front view showing the structure of another conventional example. 1... Screw insertion hole, 2... Screw hole, 3... U-shaped terminal plate, 4... Terminal screw, 7... First bent part,
8...Second bending section.

Claims (1)

[Scope of utility model registration request] A U-shaped terminal board has a U-shaped upper piece provided with a screw insertion hole and a U-shaped lower piece provided with a screw hole coaxial with the screw insertion hole, and a U-shaped terminal plate that passes through the screw insertion hole from the upper side and enters the screw hole. A terminal device with a threaded terminal screw.