JPS6118314B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal connection device for electrical equipment such as a socket or a terminal block, and particularly to a device that simplifies the work of connecting electric wires.

Conventionally, when connecting wires with crimp terminals to this type of electrical equipment, the terminal screws were first removed from the terminal board installed on the terminal block of the electrical equipment, the crimp terminals were placed on this terminal board, and then removed. Terminal screws must be installed, and when removing crimp terminals, the terminal screws must also be removed from the terminal board, which not only makes the work extremely complicated, but also makes it difficult to connect or disconnect wires from electrical equipment. I was worried about losing terminal screws during work.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a terminal connecting device that is easy to assemble, facilitates the work of connecting and disconnecting electric wires, and prevents loss of terminal screws. It is something.

Hereinafter, a case where the present invention is utilized in a socket terminal connection device will be explained.

1 is a single socket made of molded insulator,
It has a base 11 in the center, terminal blocks 12a, 12b are provided in steps at both ends in the longitudinal direction, and a partition wall 13 is provided on the back side of each terminal block 12a, 12b, respectively. They are erected in steps according to the heights of 12b. The base 11 has an insertion terminal (not shown) for a relay or timer, etc.
Recessed holes 11a, 11a, 11b, 11b for insertion and removal of
The recessed hole 11a and the terminal block 12a provided at the upper stage of both ends are connected by a recessed hole 11c that connects the bottom of the recessed hole and the terminal block surface, and similarly, the recessed hole 11b and Lower terminal block 1 on both sides
2b is the recessed hole 11 that connects the bottom of the recessed hole and the surface of the terminal block.
d, and each of the recessed holes 11a, 1
1b, 11c, and 11d are all opened on the front side. 3 and 4 are connection fittings, and the concave hole 11
Receptacle terminals 31 and 4 that fit into a and 11b
1 is formed at one end, and a terminal block 12a and 1 are formed at the other end.
Terminal plates 32 and 42 led out to 2b are formed. In addition, in the illustrated example, the terminal plates 32 and 42
Thick plates 33 and 43 are integrally fixed to their lower surfaces by welding or the like, and threaded holes 32a and 42a into which the terminal screws 5 are screwed are provided substantially in the center. Further, one end of each terminal plate is bent at a right angle to extend the vertical pieces 34 and 44 downward, and locking parts 35A and 45A are formed at the upper part from the approximate center of the vertical pieces 34 and 44. Attach the elastic pieces 35 and 45 to each terminal plate 32 and 4.
It is provided so as to extend above the second surface. Furthermore, holding pieces 36, 36 and 46, 46 extend inward from both sides of the vertical pieces 34 and 44 so as to sandwich the central elastic pieces 35 and 45.
The movable member 6 is made of a conductive metal fitting with a substantially round-shaped cross section, and the terminal screw 5 having a retaining portion (not shown) is attached to the approximate center of the neck portion 61.
A hanging piece 62 extends downward at a substantially right angle. The hanging piece 62 is elastically held by the holding pieces 36, 36 or 46, 46, and has guide pieces 63, 63 formed on both sides thereof to be attached vertically and slidably. A locking piece 64 is made to hang down from the center portion sandwiched between 63 and 63. Locking piece 64
Forms stepped portions 64A, 64B which engage with the locking portions 35A, 45A formed on each of the elastic pieces 35, 45 of the connecting fittings 3, 4 in two positions having different heights. Attachment of the movable member 6 to the connecting fitting 3 or 4 will be explained with reference to FIG. 2, in which both guide pieces 63, 63 of the hanging piece 62 of the movable member 6 are opposed to the holding piece 36 or 46. Then, with the movable member 6 positioned on the upper side of the connection fitting and both guide pieces 63, 63 contracted inward against their elasticity, the holding pieces 36, 36 or 4
6, 46, return it to the state shown and attach it. Therefore, after installation, the movable member 6 is supported movably up and down along the inner surface of the holding piece 36 or 46, and is prevented from detaching from the connecting fittings 3 and 4 by the stoppers 63A, 63A. Ru. The socket of the embodiment shown in FIG. 1 is a single socket 1 constructed as described above.
An arbitrary number of sockets 1 are arranged with their front openings oriented in the same direction to obtain sockets in an arbitrary pole row. The socket is completed by closing the socket.

Next, the wire connection work according to the present invention will be explained.

The terminal block 12a on the upper left side of FIG. 1 shows a state in which no electric wire is connected. In this state, the engagement piece 64 of the movable member 6 is attached to the locking portion 35A of the elastic piece 35.
The lower step portion 64B is in a fitted state, the movable member 6 is fixed by the elastic force of the elastic piece 35, and the stoppers 63A, 63A are in contact with the lower end of the holding piece 36 and are moved upwardly. movement has been stopped. In this state, the dimensions of each part are set so that there is a distance l between the screw 5 and the surface of the terminal plate 32 at the lower end so that the electric wire 9 can be inserted. Further, the terminal screw 5 does not fall off from the neck portion 61 of the movable member 6, and the tip of the screw faces the screw hole 32a. The terminal block 12b on the lower left side of FIG. 1 shows a state in which the electric wire 9 is connected. The terminal plate 42 and the neck portion 61 clamp the electric wire 9, and the movable member 6 has descended to near its lower limit.

This invention is characterized in that the state in which the movable member 6 is not screwed can be changed in two ways. That is, the movable member 6 is stably held in two positions: the upper limit position shown in FIG. 3a and the lowered position shown in FIG. 3b. That is, Figure a shows a case where the locking part 35A of the elastic piece 35 fits into a lower step 64B formed on the locking piece 64, and Figure b shows a case where it fits into an upper step 64A. 3, the user pulls up the movable member 6 to the state shown in Fig. 3a, inserts the electric wire, and presses down the movable member 6, which immediately returns to the state shown in Fig. 3. The connection is then made by tightening the screws.

FIG. 4 shows another embodiment of this invention.
The hanging piece 62 of the movable member 6 is configured as a □-shaped frame 65, while the vertical pieces 34 of the connecting fittings 3 and 4
When the movable member 6 is combined with the connecting fitting by forming pull-out and raised portions 34a and 44a at the lower portion of the frame 65, the lower horizontal piece 65a of the frame 65 is engaged with the pull-out and raised portions 34a or 44a. In this way, the movable member 6 is prevented from coming off.

According to this invention, there is no fear that the terminal screw will come off and be lost when connecting electric wires, and the work of connecting and disconnecting electric wires is extremely easy.

[Brief explanation of the drawing]

Fig. 1 is a partially longitudinal front view showing an embodiment of the invention, Fig. 2 is an exploded perspective view of essential parts of the invention, Fig. 3 is an explanatory view of the operation of the invention, and Fig. 4 is an illustration of another embodiment of the invention. FIG. 2 is an exploded perspective view of essential parts of the embodiment. 1... Single socket, 12a, 12b... Terminal block, 11a, 11b, 11c, 11d... Recessed hole,
3, 4... Connection fittings, 31, 41... Receptacle terminals,
32, 42... Terminal board, 32a, 42a... Screw hole, 34, 44... Vertical piece, 35, 45... Elastic piece, 35A, 45A... Locking part, 36, 46...
Holding piece, 5... Terminal screw, 6... Movable member, 61
...Neck, 62...Descent piece, 63...Guide piece,
64... Locking piece, 64A, 64B... Step portion.

Claims (1)

[Claims] 1. In a terminal connection device in which an electric wire is screwed between a terminal plate and a movable member, from approximately the center of a vertical piece obtained by bending one end of the terminal plate at a right angle,
An elastic piece having a locking part formed on the upper part is provided to extend above the terminal plate, and holding pieces are extended from both sides of the vertical piece so as to sandwich the elastic piece, A movable member having a substantially square cross section, which is held by the holding piece and is attached to be movable up and down along the vertical piece, is fitted approximately in the center of the hanging piece of the movable member at least two positions different in height from the locking part. A terminal connecting device characterized in that a locking piece is formed to fit the movable member, and a terminal screw having a retaining portion is attached to the neck of the movable member, so that the terminal screw can be screwed into the screw hole of the terminal plate. .