JPS6044973A - Electric terminal box - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to electrical terminal boxes.

Various types of terminal boxes have been used as electrical terminal boxes, including ordinary socket terminals. Generally, a terminal box is divided into two parts, and when connecting electric wires, the terminal box is divided into two parts, the electric wires are attached to the two parts, and the two parts are fastened together again using screws or the like. In addition to the case of general-purpose socket terminals, terminal boxes specially made for different uses generally consist of two parts: a base part and a cover part. Therefore, when installing electric wires, screws must be installed and removed, which is a time-consuming task. Recently, some terminals can be connected by simply inserting an electric wire into the terminal of an ordinary saw 1, but there is a disadvantage that the electric wire cannot be replaced even if a break occurs. In particular, the terminal box that is attached to the solenoid valve is a terminal box for three-wire electric wires, and in the case of a small terminal box with a maximum size of around 20 fins, there is a drawback that the work of installing the electric wires requires detailed work. Ta.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the conventional terminal box, and to provide a terminal box that allows wires to be attached and terminal boxes to be assembled and numbered with simple operations.

The present invention has achieved the above object by creating a terminal box made of synthetic resin, yet collapsible.

The configuration of the present invention will be explained in detail based on the embodiment shown in the drawings.

1 to 3, a terminal box 1 has a first frame part 3 and a second frame part 4 integrally connected to each other by a thin connecting part 2. As shown in FIGS. The first frame part 3 and the second frame part 4 can freely open and close between the open position shown in FIG. 2 and the closed position shown in FIG. 4 due to the flexibility of the connecting part 2.

As shown in FIG. 2, FIG. 5, and FIG. 6, fastening end portions 6 each having a wetting pad 5 formed on the outer peripheral surface are formed at the ends of the first frame portion 3 and the second frame portion 4. . The fastening end portion 6 is connected to the first frame portion 3 and the second frame portion 3.
The frame portion 4 is formed as a halved cylindrical portion so as to form a hollow cylindrical portion when the frame portion 4 is closed.

A protrusion 7 is formed on the inner circumferential surface of the fastening end 6 .

The projection 7 gradually projects inward as a smooth slope from the end, and forms a sharp edge 8 from the inside of the terminal box toward the end. This protrusion 7 forms an annular inward protrusion when the first frame part 3 and the second frame part 4 are closed as shown in FIG. The wires are formed so that they cannot be easily pulled out.

The first frame part 3 is formed with a raised part 10 that forms a guide hole 9 into which the end of the electric wire is inserted along the axis of the terminal box in a closed state. In the illustrated example, three guide holes 9 are formed for three lines, but the number is not limited to this, and two or other numbers may be used.

As shown in FIG. 7, a through hole 11 substantially perpendicular to the guide hole 9 is formed in the raised portion 10. As shown in FIG. On the other hand, the second frame part 4 has two tongue pieces 12 for each through hole, which are inserted into the through holes 11 of the second frame part 3 when closed, and are inserted so as to sandwich both sides of the electric wire. A bifurcated member 13 is formed.

Into the through hole 11, the terminal itself of a mating member to be electrically connected to the electric wire fixed to the terminal box 1 or a pin-shaped terminal member 14 (FIG. 4) connected to the terminal can be inserted.

When attaching the electric wires, with the terminal box 1 in an open state as shown in FIG. In this state, the second frame portion is bent by the flexibility of the connecting portion to close the terminal box as shown in FIG. In order to securely fix each wire inserted into the guide hole 9, a protruding strip 15 is provided on the first frame 3, and two protruding strips 16 are provided on the second frame portion 4 at positions sandwiching the protruding strip 15. is formed. Protruding strip 15 and protruding strip 1
As shown in FIG. 4, 6 is formed to hold the line in three dots and at a position slightly deviated from the axis of the guide hole.

With the terminal box 1 closed, the nut 17 is screwed into the fastening end 6 and fastened. In this way, the electric wire can be securely fixed to the terminal box. That is, the electric wires in the terminal box can be fixed by a simple operation of bending the terminal box and fastening with a NAND.

When the terminal member 14 is inserted into the through hole 11 of the terminal box after the electric wire is fixed, an electrical connection between the electric wire and the terminal becomes possible. There is no need to remove the covering of the electric wire when connecting it to the electric wire terminal.

An object corresponding to a general-purpose socket terminal box is obtained by the above-described structure.

For special applications such as a terminal box attached to a solenoid valve, a bolt insertion tube 18 is formed in the first frame 3 for attaching the terminal box to the casing of the solenoid valve. A hole 19 is formed in the second frame portion 4 into which the end of the cylindrical portion 18 can be inserted in a closed state. A groove is formed at the end of the cylindrical portion 18, and a pot portion 20 that slightly protrudes outward is formed at the end, and the collar portion 20 can be inserted into the hole 19 by elastic deformation. Thereafter, an annular protrusion 21 is formed on the inner surface to prevent it from coming off with less than a predetermined force.

With this structure, the bolt 22 (fourth
(Fig.) can be fixed by screwing it into a mating member such as a solenoid valve gauging.

Furthermore, if necessary, a terminal box 24 into which a printed circuit board 23 incorporating necessary components such as an indicator lamp is inserted may be formed in the first frame portion 3 to fix the terminal box together with the printed circuit board to the solenoid valve via the seal portion. Can be done.

When an indicator lamp is used, a space 24 for accommodating the lamp is formed, and as the case may be, a curved portion 25 that follows the shape of the lamp is formed. In this case it is advantageous for the terminal box to be made of transparent or translucent material.

According to the present invention, a terminal box can be easily constructed by one-touch bending between the first frame part and the second frame part without using screws.

According to the present invention, external electric wires can be easily electrically connected without removing the sheath. In addition, when the present invention is used as a terminal box attached to a solenoid valve, it can be easily removed without removing external wires when repairing the solenoid.
It can be removed at 11.

[Brief explanation of drawings]

Fig. 2 is a plan view of the terminal box according to the present invention in an open state, Fig. 2 is a front view, Fig. 3 is a bottom view, Fig. 4 is a sectional view of the terminal box in a closed state with wires fixed, and Fig. Figure 5 is a right side view of Figure 2, Figure 6 is a left side view of Figure 2, and Figure 7 is a side view of Figure 2.
■It is a sectional view. 1... Terminal box 2... Connection part 3... First frame part 4... Second frame part 5... Wetting 6... Fastening end g1B7... Protrusion
9... Guide hole 10... Raised portion 11... Hole Agent Patent attorney Hisashi Ito Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] (1) first parts integrally connected to each other by elastic connections;
It has a frame part and a second frame part, and can be opened and closed by bending at the connecting part, and the end part of the first frame part and the second frame part is formed as a half part of a hollow cylindrical body, and the outer peripheral surface is formed as a half part of a hollow cylinder. The terminal box has a fastening end having a male thread and an annular projection formed on the inner circumferential surface, and the terminal box is formed by closing the first frame part and the second frame part to the first frame part. a raised part provided with guide holes equal in number to the number of electric wire terminal wires, and a hole substantially perpendicular to the guide holes is formed in the raised part into which a pin-shaped terminal of a connection partner member can be inserted; An electrical terminal box comprising a nut screwed into the fastening end.