JPH0141167Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to improvements in terminal devices for switches and other electrical equipment.

(Prior Art) As shown in FIG. 4, in a conventional terminal device for electrical equipment, a lower side 25 of a pad 24 having a U-shaped cross section is inserted into a box-shaped terminal fitting 21, and the corresponding pad 24 is inserted into the box-shaped terminal fitting 21. A terminal screw 28 loosely inserted into a hole 27 provided in the upper side 26 is screwed into a screw hole 23 provided in the top plate 22 of the box-shaped terminal fitting 21, which is widely used. In terminal devices for equipment, the electric wire 31 is connected to the lower side 25 of the pad 24 and the terminal plate 3.
0, the pad 24 tilts as shown by the one-dot chain line, and the right side edge of the hole 27 touches the terminal screw 28.
It is said that the electric wire cannot be inserted smoothly because it gets caught in the thread groove of the terminal screw 28, and that the pad 24 does not descend properly even when the terminal screw 28 is rotated, making it impossible to quickly install the electric wire 31. There were flaws.

(Purpose of the invention) The present invention was completed with the aim of solving the above-mentioned drawbacks and providing a terminal device for electrical equipment that can speed up the work of installing electric wires.

(Structure of the invention) The present invention involves inserting the lower side of the pad with a U-shaped cross section into the box-shaped terminal fitting, and inserting the terminal screw loosely into the hole provided on the upper side of the metal. In a terminal device for electrical equipment that is screwed into a screw hole provided in the top plate, a guide protrusion is provided on the upper side of the metal that comes into contact with the side surface of the terminal screw and guides the vertical movement of the stopper. It is characterized by a protrusion extending from the edge of the hole.

(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. Reference numeral 1 denotes a box-shaped terminal fitting made of a metal plate material having a communication portion in the lateral direction, and the top plate portion 2
is provided with a screw hole 3. Reference numeral 4 is a metal plate material having a U-shaped cross section;
The lower side 5 of the box-shaped terminal fitting 1 is inserted into the interior through the opening on one side of the box-shaped terminal fitting 1, and the upper side 6 of the metal 4 has a terminal screw 8 screwed into the screw hole 3 of the box-shaped terminal fitting 1. The above structure is the same as that of a conventional terminal device of this type, but the upper side 6 of the metal 4 is in contact with the side surface of the terminal screw 8, and the wire 11 is inserted into the hole 7. A guide protrusion 9 is provided protruding from the edge of the hole 7 to guide the vertical movement of the stopper 4 during insertion. The guide protrusion 9 can be provided only on the lower surface of the hole edge of the hole 7 opposite to the insertion side of the electric wire 11 as shown in FIG. 2, or can be provided all around the hole edge of the hole 7 as shown in FIG. It may be provided to protrude downward, or in some cases may be provided to protrude upward.
In the figure, 10 is a slope provided on the wire insertion side of the pad 4, and 12 is a terminal plate provided on the bottom plate of the box-shaped terminal fitting 1.

The device configured in this way has a box-shaped terminal fitting 1.
After loosening the terminal screw 8 screwed into the screw hole 3 provided in the top plate portion 2 of 5 and the terminal plate 12 from the slope 10 side, the wire insertion side of the pad 4 is lifted by the tip of the wire 11 and receives a force that tends to tilt it to the left in the figure. A guide protrusion 9 protruding from the edge of the hole 7 comes into contact with the side surface of the terminal screw 8 to prevent the hole edge of the upper side 6 from biting into the threaded portion of the side surface of the terminal screw 8. , the entire pad 4 is lifted up, so that the wire 11 can be inserted smoothly, and when the terminal screw 8 is rotated, the pad 4 is smoothly pushed down by the lower surface of the terminal screw 8, and the tip of the wire 11 is pushed down smoothly. can be quickly attached between the lower side portion 6 and the terminal plate 12.

(Effects of the invention) As is clear from the above explanation, the present invention allows the insertion and tightening of electric wires to be carried out smoothly and quickly. It has great practical value as a device that eliminates the drawbacks of terminal devices for electrical equipment.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view showing an embodiment of the present invention, Figures 2 and 3 are perspective views of a pad used in the present invention, and Figure 4 is a diagram of a conventional terminal device for electrical equipment. It is a partially cutaway front view showing a representative example. 1: Box-shaped terminal fitting, 2: Top plate part, 3: Screw hole,
4: Pad, 5: Lower side, 6: Upper side, 7: Hole,
8: Terminal screw, 9: Guide protrusion.

Claims (1)

[Scope of utility model registration request] Insert the lower side 5 of the pad 4, which has a U-shaped cross section, into the box-shaped terminal fitting 1, and insert the terminal screw 8, which is loosely inserted into the hole 7 provided in the upper side 6 of the corresponding metal 4, into the box-shaped terminal fitting 1. In a terminal device for electrical equipment that is screwed into a screw hole 3 provided in a top plate 2, the upper side 6 of the metal 4 is in contact with the side surface of the terminal screw 8 to prevent the vertical movement of the metal plate 4. A terminal device for electrical equipment, characterized in that a guide protrusion 9 for guiding is provided in a protruding manner following the edge of the hole 7.