JPS61296660A - Terminal construction - 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 [Technical Field 1] The present invention relates to the structure of a terminal of a wiring device such as an outlet or a switch.

[Background Art] Conventional terminals include roll-up terminals in which a terminal screw is simply screwed onto a terminal board, and flat washer press terminals in which a terminal screw is screwed into a terminal plate via a flat washer. However, with wind-tight terminals, it takes time and effort to wrap the 'Ai wire around the terminal screw.
The disadvantage is that it takes time to connect. Furthermore, the flat washer clamping terminal has the disadvantage that wires of different diameters cannot be fixed at the same time, and wires of different diameters cannot be wired.

[Objective of the Invention 1 The present invention has been made in view of the above points, and the object of the present invention is to connect the electric wire by simply sandwiching the electric wire between the washer and the terminal plate and tightening the terminal screw. To provide a terminal structure which can improve connection workability, and can also securely attach electric wires of different diameters at the same time to improve contact reliability.

[Disclosure of the Invention 1 The terminal structure of the present invention includes a rectangular terminal board 1 with rising greens 2 on both sides, and a washer 3 with an inverted V-shaped cross section above the terminal board 1.
At the same time, insert the terminal screw 4 into the through hole in the approximate center of the washer 3, and screw the tip of the terminal screw 4 into the screw hole 5 in the approximate center of the terminal board 1, and connect the terminal board 1 and the rising green 2. An inclined rib 6 is provided at the inner corner of the opening, and the drawbacks of the conventional example are solved by configuring it as described above. In other words, by forming the terminal plate 1, washer 3, and terminal screw 4, the connection can be made by simply sandwiching the electric wire 7 between the terminal plate 1 and washer 3 and tightening the terminal screw 4, which improves the connection work efficiency. Moreover, there is a rising edge M2 on both sides of the terminal board 1, an inclined lip 6 at the inner corner of the rising edge 2, and the washer 3 has an inverted V-shaped cross section, so that the wire 7 can be connected at the rising edge 2. The protrusion is prevented and the washer 3 and the inclined lip 6 are used to push the wire inward, so that even wires of different diameters can be securely attached at the same time, improving contact reliability.

The present invention will be explained in detail below with reference to Examples.

A screw hole 5 is bored in the approximate center of the rectangular terminal plate 1, rising edges 2 are provided on both sides of the terminal plate 1, and vertically rising cut-out pieces 9 are provided at both ends of the terminal plate 1. It is a provision. The rising edge 2 is slightly inclined outward toward the top, and an inclined lip 6 is provided at the inner corner between the rising edge 2 and the terminal plate 1, so that the inner surface of the inclined lip 6 is slightly inclined outward toward the top. It has an outward slope. The washer 3 placed on the terminal plate 1 has an inverted V-shaped cross section, has a through hole bored in the approximate center of the washer 3, and has notches 8 at both ends of the washer 3. is engaged with the cut and raised piece 9. The terminal screw 4 is screwed into the screw hole 5 of the terminal plate 1 through the through hole of the washer 3. With the terminal screw 4 loosened, a wire #17 is inserted into the opening between the washer 3 and the terminal plate 1, and the terminal screw 4 is tightened to sandwich the electric wire 4 between the washer 3 and the terminal plate 1. At this time, not only is the electric wire 7 prevented from coming off at the rising edge 2, but also the inner surface of the inclined lip 6 is prevented by tightening the terminal screw 7 and suppressing the washer 3, which has an inverted V-shaped cross section, as shown in FIG. There is no risk that the electric wire 7 will come off due to being pushed inward along the line. In addition, in the case of electric wires, etc., in order to facilitate 7-ohming of the electric wire 7, as shown in FIG. After connection, the tip of the conductor portion 7a is turned completely as shown by arrow A, but at this time, the electric wire 7 does not protrude or come off because there is a rising edge 9 and 2. Also, when the large-diameter conductor AIA and the small-diameter conductor #1B are simultaneously connected and sent as the conductor m7, the connection ends as shown in FIG. 4. That is, when the terminal screw 4 is tightened, the head of the terminal screw 4 presses the top of the washer 3, and since the washer 3 can rotate slightly, it rotates by an angle of θ and holds both the electric wires A and B.

At this time, the contact portion 10 between the washer 3 and the lower surface of the head of the terminal screw 4 is approximately at the center of the head, and the storage positions of the electric wires A and B are regulated by the inclined lip 6, so that 1+#12 Become. Therefore, the force with which washer 3 presses wires #XA and B is F +
= F2, and a reliable connection can be made (F#F2 does not occur in the case of flat washer press-tight terminals because the washer does not rotate).

[Effects of the Invention] As described above, the present invention includes a terminal plate, a washer, and a terminal screw, so connection can be made by simply sandwiching the electric wire between the terminal plate and the washer and tightening the terminal screw, improving connection work efficiency. Of course, since the terminal board has rising edges on both sides, the wires are prevented from rising and protruding from the green, and the wires are securely connected to prevent them from coming off, improving contact reliability. In addition, there is an inclined lip at the inner corner of the rising edge, and the washer has an inverted V-shaped cross section, so when the terminal screw is tightened, the washer and inclined lip will pull it inward, further preventing the wire from coming off. The washer can be connected to the wire to improve -N contact reliability, and since the washer has an inverted V-shaped cross section, the washer can be rotated slightly. The wires can be contacted with the same force to ensure a reliable connection even when wiring wires of different diameters.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of the present invention, Fig. 2 is a front view of the state in which electric wires are connected, Fig. 3 is a perspective view illustrating the connection state of other electric wires same as above, and Fig. 4 is It is a front view of a state in which electric wires of different diameters are connected, and 1 is a terminal plate, 2 is a rising edge, 3 is a washer, 4 is a terminal screw, 5 is a screw hole, and 6 is an inclined lip. Agent Patent Attorney Ishi 1) Chief 7th 1 Figure 4

Claims (1)

[Claims] [1] Provide rising edges on both sides of a rectangular terminal board, place a washer with an inverted V-shaped cross section above the terminal board, and insert a terminal screw into the through hole approximately in the center of the washer to secure the tip of the terminal screw. is screwed into a screw hole approximately in the center of the terminal plate, and an inclined rib is provided at the inner corner between the terminal plate and the rising edge.