JP2538669Y2 - Switch pin connection pin potential fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to, for example, a connection pin potential fixing device of a switch for fixing the potential of a connection pin of a movable conductor that opens and closes a load switch.

[Conventional technology]

In general, when a load switch is opened and closed, a base of an insulating lever is fixed to a main shaft, and at the tip of the lever, as shown in FIG. The connecting pin 1 is loosely inserted into the long hole 3, and the rotation of the main shaft is converted into a linear movement of the movable conductor 2 via the lever, the pin 1 and the long hole 3.

By the way, since the connecting pin 1 is loosely inserted into the long hole 3, the connecting pin 1 does not reliably contact the movable conductor 2, and when the floating pin is in a floating state, the connecting pin 1 has an intermediate potential with respect to the potential of the movable conductor 2. And a corona discharge is generated in a minute gap between the movable conductor 2 and the connecting pin 1, which causes insulation deterioration.
During energization, it causes abnormal noise and vibration.

Therefore, conventionally, as shown in FIG. 4, a cavity 4 is formed in the conductor 2, a slit 5 is provided between the cavity 4 and the elongated hole 3, and a spring receiver 6 provided in the cavity 4 is formed. The protrusion 7 is led out of the slit 5 into the elongated hole 3, a coil spring 9 is provided between the cover plate 8 of the cavity 4 and the spring receiver 6, and the protrusion 7 is pressed against the connecting pin 1,
The potential of pin 1 is fixed to the potential of conductor 2 to prevent corona discharge.

[Problems to be solved by the invention]

The conventional potential fixing device shown in FIG. 4 has a problem that the number of parts is large, the structure is complicated, and the device is expensive.

The present invention has been made in view of the above points, and has as its object to provide an inexpensive connecting pin potential fixing device for a switch having a small number of parts, a simple structure, and a low cost.

[Means for solving the problem]

In order to solve the above problems, the connecting pin potential fixing device of the present invention includes a main shaft that is rotated, two insulating levers whose bases are fixed to the main shaft, a movable conductor that opens and closes a switch, A long hole formed at the distal end of the movable conductor, a connecting pin loosely inserted into the long hole and held at the distal ends of both levers, a wire made of a conductor, and a U-shaped fold at the center of the wire; A bent holding portion, a bolt screwed to an end surface of the movable conductor, and fixing the holding portion to the movable conductor, a bolt parallel to both sides of the movable conductor on both sides of the holding portion, and It is formed by being bent in a U-shape, and is provided with a pressure contact portion that presses against both ends of the connection pin and fixes the connection pin at the same potential as the movable conductor.

[Action]

The connecting pin potential fixing device of the switch of the present invention configured as described above has a holding portion that is bent in a U shape at the center of a wire made of a conductor, and the holding portion is formed on the end surface of the movable conductor. It is fixed to the movable conductor by the bolts which are screwed into it, and it is bent on both sides of the holding portion of the wire parallel to both sides of the movable conductor and in a U-shape to form a press contact portion, and the press contact portion is inserted into the elongated hole. Since the connection pin is pressed against the inserted connection pin, the connection pin is pressed against the movable conductor and fixed at the same potential as the movable conductor, the number of parts is small, the structure is simple, the assembly work is easy, and the configuration is inexpensive It can be bent easily because it is a wire rod, and bending and other processes are very easy.Moreover, since both press-contact parts are pressed against both ends of the connection pin, the connection pin is stably pressed against the movable conductor. can do.

〔Example〕

An embodiment will be described with reference to FIG. 1 to FIG. In these drawings, the same symbols as those in FIG. 4 indicate the same or corresponding components.

Reference numeral 10 denotes a main shaft which is operated to rotate, 11 denotes two insulating levers whose bases are fixed to the main shaft 10, 12 denotes a trunk portion integrally formed with both levers 11, and 13 denotes an insertion penetratingly provided at the tips of both levers 11. The connection pin 1 is inserted through both the insertion holes 13 and the elongated hole 3 of the movable conductor 2, and both ends of the connection pin 1 are held by both levers 11. 14 is a retaining ring for the pin 1 fitted on the pin 1.

Reference numeral 15 denotes a wire made of a conductor, which is bent in a U-shape in the center to form a holding portion 16, and is bent on both sides of the holding portion 16 in parallel with both sides of the movable conductor 2 and in a U-shape. Pressed part 17
Are formed.

Reference numeral 18 denotes a bolt screwed to the end surface of the movable conductor 2. The bolt 18 is inserted into the center of the holding portion 16 via a spring washer 19 and a washer 20 and fastened to fix the wire 15 to the movable conductor 2.

Then, both pressure contact portions 17 of the wire 15 are pressed against both ends of the connection pin 1, and the connection pin 1 is held at the same potential as the movable conductor 2.

[Effect of the invention]

Since the present invention is configured as described above,
The following effects are obtained.

A holding portion 16 is formed by being bent in a U-shape at the center of a wire 15 made of a conductor, and the holding portion 16 is fixed to the movable conductor 2 by a bolt 18 screwed to an end surface of the movable conductor 2. On both sides of the holding portion 16, parallel to both sides of the movable conductor 2,
The pressure contact portion 17 is formed by being bent in the shape of a letter, and the pressure contact portion 17 is pressed against the connecting pin 1 loosely inserted into the long hole 3.
The connecting pin 1 is pressed into contact with the movable conductor 2 and can be fixed at the same potential as the movable conductor 2 so that the occurrence of corona discharge can be prevented. In addition, the number of parts is small, the structure is simple, and the assembling work is easy. , Can be inexpensive, and wire rod
The bending of the connecting pin 1 is extremely easy, the bending amount is large, and both the press contact portions 17 are pressed against both ends of the connecting pin 1.
Can be pressed against.

[Brief description of the drawings]

1 to 3 show an embodiment of a pin fixing device for a switch according to the present invention. FIGS. 1, 2, and 3 are a plan view, a cut front view, and a perspective view of a wire, respectively. FIG. 4 is a sectional plan view of a conventional example. 1 ... connecting pin, 2 ... movable conductor, 3 ... long hole, 10 ...
Spindle, 11… lever, 15… wire, 16… holding part, 17…
… Pressing contact part, 18 …… Bolt.

Claims (1)

(57) [Scope of request for utility model registration] 1. A main shaft that is rotated, two insulating levers whose bases are fixed to the main shaft, a movable conductor that opens and closes a switch, and a long hole formed at a distal end of the movable conductor. A connecting pin loosely inserted into the elongated hole and held at the distal ends of both levers; a wire made of a conductor; a holding portion formed in the center of the wire by being bent in a U-shape; And a bolt fixed to the end surface of the movable conductor and fixing the holding portion to the movable conductor, and formed on both sides of the holding portion in parallel with both sides of the movable conductor and bent in a U-shape, and the connection is formed. A connection pin potential fixing device for a switch, comprising: a pressure contact portion that is pressed against both ends of a pin and fixes the connection pin to the same potential as the movable conductor.