JPS6118315B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a self-locking terminal device equipped with a display means for confirming the state of wire connection from the outside.

Conventionally, self-locking terminal devices have been widely used in which a locking spring and a terminal plate are opposed to each other, and an electric wire is inserted between them for a clamp connection, but the electric wire is connected inside the device. Therefore, it is not possible to see from the outside whether the connection is secure or not. Therefore, there are concerns about the connection status, and for this reason, it is necessary to make a peephole in the side wall of the vessel where the wire passes through when inserting it, or to attach a member made of a transparent material to the vessel body so that the inside can be seen through. Some confirmation measures have been implemented, such as making it possible to do so. However, if the wire connection part consisting of the locking spring and terminal plate is located sufficiently inside the container, it will be difficult to see, and enlarging the peephole will prevent the live metal part from approaching the side wall of the container. There are disadvantages such as problems with insulation due to the leakage, and dust entering through the peephole, which deteriorates the connection of electric wires.

The present invention has been made as a countermeasure against such problems, and its purpose is to accurately respond to the insertion of an electric wire and display it, and to ensure that the display member is turned off by a return spring when the electric wire is removed. To provide a self-locking terminal device that can change its position, makes the display easier to see by bringing the display member close to the display window, and further closes the display window at all times with the display member to prevent dust from entering. There is something to do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The self-locking terminal device of the present invention will be explained below with reference to the drawings shown as examples. 1 to 3 show an embodiment of the present invention, in which the terminal device of the present invention is used in a hook-type ceiling rosette. 1
The upper surface 2 is opened in the insulator body, and the bottom wall 3 has arc-shaped insertion holes 4, 4 and mounting holes 5 facing the upper surface 2.
5 and a display window 7 are formed. Blade holders 9, 9 along the insertion holes 5, 5 and terminal plates 10, 10 conductively connected to the blade holders 9, 9 are provided in the inner chamber 8 of the insulator body 1.
10 is positioned along a wall 11 protruding from the bottom wall 3, and locking springs 12, 12 are provided between the side wall 1a of the container body 1 and the wall 11 to face the terminal plates 10, 10.

Reference numeral 13 denotes a lid body which is attached to the wire connecting portion consisting of the locking spring 12 and the terminal plate 10, and is provided with an insertion hole 15 for accurately introducing the wire 14 between the locking spring 12 and the terminal plate 10. .

Reference numeral 16 denotes a display piece, which extends between the locking spring 12 and the terminal plate 10, and includes a pressed member 18 forming a sloped surface 17 inclined with respect to the input hole 15, and a display member facing the display window 7. 19, and the inner chamber 8 together with a return spring 20 for applying a return force.
It is installed on.

Note that 21 is a push button for unlocking and releasing the lock, which is used when disconnecting the electric wire 14.

Therefore, without inserting the electric wire 14, the display piece 1
6 is moved in the direction of arrow A in FIG. 2 by the biasing force of the return spring 20 to position the sloped surface 17 of the pressed member 18 between the locking spring 12 and the terminal plate 10, and the sloped surface 17 is placed in the insertion hole. 15 and the display member 1
9 makes its tip 19a look into the display window 7.

Next, when the power source 14 is introduced through the input hole 15, the connecting end 14a of the electric wire 14 collides with the slope surface 17, resulting in the state shown in FIG. moves in the direction opposite to the arrow A against the return spring 20, and the display member 1 moves as shown in FIG.
9 makes its rear end 19b look into the display window 7. In this state, the connecting end 14a of the electric wire 14 is securely inserted to the final position and is hooked and connected between the locking spring 12 and the terminal plate 10.

4 to 5 show another embodiment of the present invention, in which the tip 19a of the display member 19 is eliminated and the display window 7 is open when the power source 14 is not turned on, and the display piece 16 The required materials can be reduced.

FIGS. 6 to 8 show other embodiments of the present invention, which are small-sized switches. Reference numeral 22 denotes an insulator body, in which an operating body 24 is pivotably mounted in an opening of a top surface 23, an input hole 26 is formed in a bottom wall 25, and a display window 27 is formed in a side wall 22a. Inner chamber 28 of insulator body 22
A movable piece 29 that is reversed by the operating body 24, a fixed piece 30 that opens and closes between the movable piece 29, and a U-shaped terminal plate that is conductively connected to each of the movable piece 29 and the fixed piece 30, respectively. 31 will be provided. This terminal board 3
A cutout groove 32 is provided in the side wall 2 of the insulator body 22.
It is installed in the inner chamber 28 in parallel with 2a. Reference numeral 33 denotes a locking spring, which is mounted in the inner chamber 28 so as to face the terminal board 31. Reference numeral 34 designates a display piece that integrally forms a pressed member 35 and a display member 36, and positions the pressed member 35 between the locking spring 33 and the terminal plate 31 through the notch groove 32 and facing the input hole 26, and inserts the insulator. A return spring 37 is activated between one wall of the body 22 and the display piece 34 to apply a return force. The display member 36 faces the display window 27 with the display piece 34 attached to the inner chamber 28. Thus, it functions in the same manner as the first embodiment, and the display window 27 can display each state of the connection before the electric wire 14 is connected.

FIG. 9 shows another embodiment of the present invention, in which the display window 27 is open when the electric wire 14 is not inserted, and the materials required for the display piece 34 are reduced.

10 to 12 show other embodiments of the present invention, in which, instead of the display piece 34, a display piece 40 is used, in which the display member 36 is integrally formed with a pressed member 38 and a return spring 39, and FIG. 13 shows the display member 36 in this embodiment constructed in the same manner as in FIG. 9.

As described above, according to the self-locking terminal device of the present invention, instead of simply providing a peephole or a transparent plate as in the past, the display piece mounted opposite the display window provided in the insulator body is used to connect the electric wire. In response to the input of
Moreover, the pressed member on the display piece is located between the locking spring and the terminal board, so that the display accurately responds to the insertion of the wire, and when the wire is removed, the return spring reliably changes the position of the display member. In addition, the display member can be placed close to the display window to make the display easier to see, and the display window can also be kept closed at all times by the display member. Suitable as a terminal device for electrical appliances such as appliances.

[Brief explanation of the drawing]

The figure shows an embodiment of the self-locking terminal device of the present invention. 1 to 3 show one embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a sectional front view before connection, and FIG. 3 is a sectional front view after connection. 4 and 5 show other embodiments of the present invention, in which FIG. 4 is a sectional front view before connection, and FIG. 5 is a sectional front view after connection. 6 to 8 show other embodiments of the present invention,
FIG. 6 is a cutaway front view, FIG. 7 is a side view, and FIG. 8 is a perspective view of the parts. FIG. 9 is a cutaway front view showing another embodiment of the present invention. Figures 10 to 12
The figures show another embodiment of the present invention; FIG. 10 is a cutaway front view, FIG. 11 is a side view, and FIG. 12 is a perspective view of parts. FIG. 13 is a cutaway front view showing another embodiment of the present invention. 1, 22...Insulator body, 2, 23...Top surface,
8,25...Bottom wall, 7,27...Display window, 8,2
8... Inner chamber, 10, 31... Terminal board, 12, 33
... Locking spring, 14 ... Electric wire, 15, 26 ... Input hole, 16, 34 ... Display piece, 18, 35 ... Pressed member, 19, 36 ... Display member, 20, 37
...Return spring.

Claims (1)

[Claims] 1. A terminal device in which a locking spring and a terminal plate are opposed to each other, and an electric wire is clamped and connected between the opposing sides, and the terminal device is equipped with an indicator piece that responds to movement of the connecting end of the electric wire and has a return spring; The display member of the display piece is made to face the display window formed in the insulator body housing the terminal device, and when the wire is inserted between the locking spring and the terminal board, the display piece is pressed by the connecting end of the wire. A self-locking terminal device characterized in that the display member is moved to match the display window, and is mounted so that the display member is displaced from the display window when the electric wire is detached.