JPS5829567Y2 - Structure of wire connection part - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an improvement of a terminal block.

Many terminal blocks have been used in the past, but when used to connect wires C and D with different diameters between terminal plate A and washer B as shown in Figure 1, the screw through hole of washer B If the difference in diameter between E and screw F is small, washer B cannot tilt freely and only wire C is tightened and connected as shown in Figure 2a, leaving a gap P between wire wire and washer B. Sometimes it happened.

In addition, even if the hole E of washer B is sufficiently large as shown in Figure 2, washer B comes into contact with terminal plate A and wire C, creating a gap q between wire wire and washer B, and the wire wire is tightened. There were cases where it was not possible.

The object of the present application is to provide a terminal block that improves the above-mentioned drawbacks.

An embodiment of the present invention will be described in detail below.

In FIGS. 3 to 8, reference numeral 1 denotes a base made of an insulating material such as synthetic resin or porcelain.

Reference numeral 2 denotes a terminal plate made of a conductive material such as a brass plate, which has a screw hole 3 inside and protruding pieces 4, 4 on both sides. , 5, and the tip 4a
, 4a are bent and fixed.

Reference numeral 6 denotes a washer, which is provided with a screw through hole 8 that loosely fits the terminal screw 7 with washer, and cut and raised pieces 9, 9.

The washer 10 of the washer-equipped terminal screw 7 is engaged with the small diameter portion 7c of the neck portion 7b immediately below the screw head 7a, and moves as the screw moves.

11.11 is a protrusion for insulating the terminal parts from each other and is formed integrally with the base.

12 is a central protrusion, and a screw 1 that locks the cover 13
4 screw holes 15 are provided.

16 is an insulating plate provided as necessary.

Therefore, as shown in FIG. 6, the first
Insert the second electric wire 17 between the washer 6 and the washer 1.
0 and on the opposite side of the first electric wire 17 with respect to the screw center line α.

When the terminal screw with washer 7 is tightened to the terminal plate 2 in this state, the first electric wire is tightened between the terminal plate 2 and the washer 6, and the second electric wire 18 is tightened between the washer 6 and the washer 10. .

The first electric wire 17 and the second electric wire 18 are in reliable contact even if their diameters are different.

That is, since one electric wire is inserted between the terminal plate 2 and the washer 6, and one electric wire is inserted between the washer 10, the situation shown in Fig. 2 cannot occur, and the diameter of the washer 6 is Even if the diameter is slightly larger than the diameter of the threaded portion of the terminal screw 7 and the range of movement of the washer is small, the wire will be tightened as shown in FIG.

In other words, even if the end 6a of the washer 6 is not in contact with the terminal plate 2, the washer 6 remains stable as long as the washer-equipped terminal screw 7 is sufficiently tightened. The position never moves.

The cut-and-raised pieces 9, 9 of the washer 6 are provided at each half with respect to the center line β of the washer, as shown in FIG. 6, so that they can be easily inserted together with the electric wires 17 and 18.

Also, on the back side of the washer, the wires 17 and 18 are provided with 20 and 20 to prevent them from escaping to the outside, or the knurling 21
It is even more effective if you include

As described above, according to the present invention, the terminal plate 2 is fixed to the base 1, and the terminal screw 7 with washer 7 with the washer 6 loosely fitted is screwed into the screw hole 3 of the terminal plate 2 to constitute the terminal part. Since the terminal block is made with It has an extremely large effect.

Further, by partially providing a cut and raised piece on the washer 6, the electric wire 17 can be easily inserted due to the presence of the cut and raised piece 9, as shown in FIG.
Moreover, since the cut-and-raised piece 9 of the washer 6 is only partial, it can be inserted between the washer 6 and the washer 10.

Moreover, although an example of a terminal block is shown as an example, it is not necessarily limited to a terminal block, and it is a matter of course that the present invention may be used for a wire connection part of other electric appliances.

[Brief explanation of drawings]

1 and 2 are partial sectional views showing a conventional example of the present invention. 3 to 8 are diagrams illustrating an embodiment of the present invention, in which FIG. 3 is an exploded perspective view, FIG. 4 is a sectional view, FIG. 5 is a partially exploded perspective view, and FIGS. 7 is a partial sectional view, and FIG. 8 is a perspective view of the washer 6. 1... Base, 2... Terminal board, 3... Screw hole, 4...
...Protruding piece, 5...Engagement hole, 6...Washer, 7...Terminal screw with washer, 8...Hole, 9...Cut and raised piece, 10.
...Washer of terminal screw with washer 7, 11...Protrusion, 13.
...Cover 14...Screw, 15...Screw hole, 17
, 1B...Electric wire.

Claims (1)

[Scope of utility model registration request] By fixing the terminal plate 2 to the base 1 and screwing the terminal screw 7 with washer 10 with the washer 6 loosely fitted into the screw hole 3 of the terminal plate 2 to form a terminal part, the washer 6 and A structure of an electric wire connection part characterized in that electric wires can be connected between the terminal plate 2 and between the washer 6 and the washer 10 on the opposite side to the screw shaft of the terminal screw 7.