JP2002222669A - Wire connection fixture for terminal block and terminal block having above wire connection fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable easy and sure connection wires, irrespective of their being singular or plurality in number, and identical or different diameter, for all cases at the same time. SOLUTION: A female screw thread 21 is provide on an upper surface part 20 of a tubular box 2. An upper surface part 40 of a nearly U-shaped wire holding fixture 4 is attached at a part 31 under a head part 30 of a wire connection screw 3 screwed down with the female screw thread 21. A bottom surface part 41 of the wire holding fixture 4 is made to make contact a bottom end 32 of the wire connection screw 3. A fixed board 5 made of a conductive board for partition is inserted in the box 2, a plurality of spaces 6, 6' for wire insertion are formed above and below the locking board 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block used for an electronic device and an electric device, and to a connection tool used for the terminal block.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. Upper part 4
0 is attached, and a lower surface portion 41 of the electric wire holding plate 4 is disposed below the lower end 32 of the connection screw 3. A terminal block incorporating the connection device is used.

According to this conventional example, the electric wire 8 is inserted into the space 60 in the box 2 from the electric wire insertion hole 11 of the terminal block A,
The connection screw 3 is screwed forward, and the electric wire 8 is pressed against the conductive plate 5 ′ by the lower surface portion 41 of the electric wire holding plate 4 to connect the electric wire 8.

However, when a plurality of wires 8 and 8 'having different wire diameters are inserted into the space 60 and tightened, a tightening force is applied only to the large-diameter wire 8 and a tightening force is applied to the small-diameter wire 8'. I will slip through. For this reason, although the small-diameter electric wire 8 ′ is twisted, it cannot be completely prevented from being pulled out, and furthermore, it takes time and effort to twist it, which is inefficient, so that only one electric wire is inserted into each space 60. The fact is that it is tightened.

[0005]

DISCLOSURE OF THE INVENTION The present invention is intended to ensure that even if a plurality of electric wires are inserted into a single box, regardless of whether they have the same diameter or different diameters, any of the electric wires can be securely tightened and connected. Make it an issue.

[0006]

According to the present invention, a female screw is provided on an upper surface of a cylindrical box, and a U-shaped upper surface of a U-shaped wire pressing plate is provided under a head of a connection screw screwed into the female screw. And attach
The lower surface of the wire holding plate is brought into contact with the lower end of the connection screw, and a partition fixing plate made of a conductive plate is inserted into the box to form a plurality of wire insertion spaces above and below the fixing plate. In a terminal block that connects and connects an insulating material block and an insulating material end plate to form an insulating base, a square hole is formed in each insulating material block, A wire insertion hole orthogonal to the square hole and a fitting groove for the fixing plate are continuously formed, the square hole and the fitting groove are opened on one side of the block, and a female screw is provided on an upper surface of the cylindrical box. The upper surface of the U-shaped wire holding plate is attached below the head of the connection screw screwed into the female screw, and the lower surface of the wire holding plate is brought into contact with the lower end of the connection screw, and the inside of the box is Insert a fixed plate for partition made of conductive plate into the above Forming a plurality of spaces for inserting electric wires above and below the fixed plate, inserting the connection screws, the electric wire holding plate and the box into the square hole from the opening side surface of the block, and fitting the fixing plate into the fitting groove. It is characterized by the following.

Here, if the electric wire is inserted into the space above the fixing plate in the box and the connection screw is screwed in, the electric wire holding plate is also lowered, and the lower surface of the electric wire holding plate and the upper surface of the fixing plate are moved. To clamp the wire and tighten one wire.

Next, if the other electric wire is inserted into the space below the fixing plate in the box and the connection screw is screwed, the connection plate does not descend any more due to the presence of the fixing plate. Rises to clamp the other wire between the lower surface of the fixing plate and the surface of the lower surface of the box, and tighten the other wire.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A rectangular cylindrical box 2 is formed by bending a metal, specifically, an iron plate, and the center of the upper surface 20 of the box 2 is made thick. 21
Is screwed.

The diameter of the neck 33 and the lower end 32 of the connection screw 3 made of metal, specifically, iron, is made smaller than that of the male thread 34, and the washer 7 is passed through the neck 33 of the small diameter to form the large diameter male thread 3.
Lock to 4. This is achieved by extrapolating the washer 7 to a screw shaft having a diameter smaller than the hole diameter of the washer 7 and then compressing by a rolling machine to form a male screw part 3 having a mountain diameter larger than the hole diameter of the washer 7.
4 by a known production method. The lower end 32 of the connection screw 3 is inserted into the female screw 21 to erect the connection screw 3. The lower end 32 may have the same diameter as the male thread portion 34 and may be formed with a male screw. However, when assembling a large amount, the lower end 32 must be screwed into the female screw 21 each time. If the lower end 32 has a small diameter as in the embodiment, the connection screw 3 can be easily and quickly raised by simply inserting the lower end 32 into the female screw 21.

An electric wire pressing plate 4 is formed by bending a metal, specifically, a stainless steel plate into a U-shape. The upper surface portion 40 of the wire holding plate 4 is formed in an E-ring shape as shown in the lower right part of FIG. The E-ring-shaped upper surface portion 40 is externally fitted to the neck portion 33 formed below the head portion 30, and the lower surface portion 41 of the wire holding plate 4 abuts on the lower surface of the upper surface portion 20 of the box 2.

A fixed plate 5 for partitioning is formed by a conductive plate, specifically, an elongated plate made of brass, and an end 5b of the fixed plate 5 is formed.
Are inserted in the middle of the box 2 and a plurality of, in this embodiment, two electric wire insertion spaces 6, 6 'above and below the fixing plate 5.
To form Note that the fixing plate 5 is not yet fixed during the assembling of the connection tool, but is fixed by means described later.

A plurality of blocks 1, 1, 1,... And end plates 1 ', 1' of the same material are formed of an insulating material, specifically, polycarbonate or polybutylene terephthalate. , And a plurality of fitting holes 16, 16, 16,... Are formed in the other side surface, and the projections 15 of the block 1 are formed. In the end plate 1 'corresponding to the above, fitting holes 16 corresponding to the corresponding number are provided, and in the end plate 1' corresponding to the fitting hole 16 side of the block 1, projections 15 corresponding to the corresponding number are provided. ,
The respective projections 15 are fitted into the respective fitting holes 16, and the respective blocks 1 and the respective end plates 1 'are connected and connected. The means itself is publicly known. Alternatively, the means may be connected and connected by tightening bolts and nuts through each block 1 and each end plate 1 '. Each of the above blocks 1,
The connecting process of each end plate 1 ′ is, of course, performed after attaching the above-described connection tool to each block 1 described below.

A square hole 10 with a bottom having a step portion 14 is formed in each block 1, and a wire insertion hole 11, which is perpendicular to the square hole 10 and formed of a square hole, is formed outward, and is shown in FIG. 2. The peripheral edge 11 ′ of the hole is formed so as to be inclined so as to spread outwardly, and the fitting groove 12 of the fixing plate 5 is formed continuously to the rectangular hole 10 and inside the rectangular hole 10. .

The square hole 10, the step portion 14, and the fitting groove 12 are opened on one side surface 13 of the block 1.

Then, the connecting device assembled as described above is put into the block 1 from the opened side surface 13. That is, as shown in FIG. 2, the box 2 is fitted into the square hole 10, and the connection screws 3, the upper surface 40, the lower surface 41 of the wire holding plate 4,
The washer 7, the end 5 b of the fixing plate 5 is inserted, the fixing portion 5 a of the fixing plate 5 is closely fitted into the fitting groove 12, and the vertical portion 42 of the wire holding plate 4 is loosely inserted into the step portion 14. In the present embodiment, each block 1 has a two-pole configuration, and a pair of the above-described connecting members is symmetrically attached to each block 1.
As shown in the figure, the square hole 10, the step portion 14, and the wire insertion hole 11 of the same structure are formed symmetrically, and the pair of square holes 10, 10 are connected via a common fitting groove 12, and each connection tool, A common fixing plate 5 is attached, but has a one-pole structure including a right portion of the vertical dashed line formed by being divided by a vertical dashed line drawn slightly leftward from the center of FIG. It may be. Each of the projections 15 is fitted into each of the fitting holes 16 and the plurality of blocks 1, 1, 1,..., And each end plate 1 'are connected to form a terminal block. At this time, the box 2 and the fixing plate 5 are fixed by the side wall 1 "or the end plate 1 'of the adjacent block 1.

Next, the use and operation of the present embodiment will be described. As shown on the right side of FIG. 2, a large-diameter electric wire 8 is inserted into the upper space 6 from the electric wire insertion hole 11 and the connection screw 3 is Screw up. The screwing of the connection screw 3 also lowers the wire holding plate 4 integral therewith, and clamps the wire 8 between the lower surface of the lower surface portion 41 and the fixed plate 5 to connect as shown on the right side of FIG.

Subsequently, a small-diameter electric wire 8 'is inserted into the lower space 6' from the electric wire insertion hole 11, and the connection screw 3 is screwed. Since the fixing plate 5 is provided here, the connection screw 3 with the wire holding plate 4 does not descend any more. Conversely, the box 2 rises as shown on the left side of FIG.
The electric wire 8 ′ is pressed between the surface and the fixing plate 5 and connected.

[0019]

According to the present invention, it is possible to easily and surely connect wires irrespective of whether the wires are singular or plural, and irrespective of whether the wires have the same diameter or different diameters.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention, with some members omitted and intermediate portions omitted.

FIG. 2 is a sectional view taken along the line BB in FIG.

FIG. 3 is a partially cutaway side view showing the operation of the above-described block and a wire connector.

FIG. 4 is a partially cutaway front view of the above-mentioned block and a wire connecting device, showing the operation of the connecting member with a middle part omitted.

FIG. 5 is a partial sectional view of a conventional example.

[Explanation of symbols]

 A Insulating base 1 Block 1 'End plate 2 Box 3 Connection screw 4 Electric wire holding plate 5 Fixing plate 6 Space 6' Space 10 Square hole 11 Wire insertion hole 12 Fitting groove 13 Side surface 20 Top surface 21 Female screw 30 Head 31 Lower 32 Lower end 40 Upper surface 41 Lower surface

Claims (2)

[Claims] A female screw is provided on an upper surface of a cylindrical box, and an upper surface of a U-shaped electric wire pressing plate is attached below a head of a connection screw screwed with the female screw. The lower surface of the wire holding plate abuts on a lower end, and a plurality of spaces for inserting a plurality of wires are formed above and below the fixed plate by inserting a fixed plate for partition made of a conductive plate into the box. Terminal block connection tool. 2. A terminal block in which an insulating block and an end plate made of insulating material are connected and connected to form an insulating base. Each of the blocks made of insulating material has a rectangular hole, and is orthogonal to the rectangular hole. The wire insertion hole and the fitting groove of the fixing plate are continuously formed, the square hole and the fitting groove are opened on one side of the block, and a female screw is provided on an upper surface of the cylindrical box. The upper surface of the U-shaped wire holding plate is attached below the head of the connection screw screwed into the box, and the lower surface of the wire holding plate abuts on the lower end of the connection screw, and the box is formed of a conductive plate. Forming a plurality of spaces for inserting electric wires above and below the fixing plate by inserting a fixing plate for partitioning, inserting the connection screws, an electric wire holding plate and a box into the square hole from an opening side surface of the block, The fixing plate is fitted into the fitting groove. Terminal block.