JPS6125164Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a fuse support in a switch with a current limiting fuse.

Purpose This invention aims to reduce manufacturing costs by reducing the number of parts when assembling a switch by integrally forming a fuse support stand and a support insulator that supports it. It is an object of the present invention to provide a fuse support stand for a switch with a current-limiting fuse, which can simplify the assembly work by omitting the mounting work.

Hereinafter, one embodiment of a pneumatic switch with current limiting fuse equipped with this phase-opening prevention function will be described with reference to FIGS. 1 to 3. As shown in FIGS. 1 and 3,
A mounting base 1, which is bent so that its front surface protrudes in a mountain shape, is bolted between a pair of left and right fixed frames 2 and 3, and an upper support insulator 4 is installed for each phase on the upwardly inclined surface of the mountain-shaped portion. are bolted at the base end, and lower support insulators 5 for each phase are arranged on the downwardly inclined surface of the mountain-shaped portion so as to form a V shape with respect to each of the upper support insulators 4. It is bolted at the proximal end.

An arc extinguishing chamber 6 is fixed at the tip of the upper support insulator 4, and a fixed contact 7 disposed inside the arc extinguishing chamber 6 is fixed. A power supply side terminal 8 led out further upward is connected. Further, a fuse support stand 9 is integrally formed at the tip of the lower support insulator 5, and upper and lower fuse clamping fittings 10 and 11 are separately fixed to the upper and lower ends of the fuse support stand 9, respectively. A movable contact 12 corresponding to the fixed contact 7 so as to be able to approach and separate from the fixed contact 7 is rotatably supported on one side of the center portion of the fuse support base 9 at its lower end. A conductive plate 1 for connecting to the movable contact 12 is attached to the upper fuse holding fitting 10.
3 is connected and fixed, and the lower fuse clamping fitting 11 has a load side connection terminal 1 led out downward.
4 is connected and fixed.

A driven lever 15 having an L-shaped side surface is rotatably supported at the center of the upper end of the fuse support base 9, and a center lower surface of the lower half of the driven lever 15 is provided between the fuse clamping fittings 10 and 11. A receiving portion 18 for receiving the protrusion of a blowout indicator (not shown) of a current limiting fuse (not shown) connected to the
is recessed. And the driven lever 15
One end of a connecting rod 19 constituting a part of the open phase prevention drive mechanism is fixed to the upper end, and when the driven lever 15 is rotated in response to the protruding operation of the fusing display device (not shown). Each movable contactor 12 is opened simultaneously via an open-phase prevention drive mechanism.

Further, one end of a push-up rod 20 made of an insulating material such as synthetic resin and constituting a part of the opening/closing mechanism is rotatably attached to the center of the movable contactor 12.

Note that 22 is an opening/closing handle for external operation that is rotatably supported by a shaft 21 on the fixed frame 3 and is linked to the opening/closing mechanism.

Now, since the fuse support stand 9 configured as above is integrally formed with the lower support insulator 5,
The work of assembling the fuse support stand 9 and the lower support insulator 5 can be omitted, and the number of parts can be reduced because attachment parts such as bolts and screws are not required.

It should be noted that this invention is not limited to the above-mentioned embodiments, and can be modified as desired without departing from the spirit of this invention.

Effects As detailed above, this invention has the fuse support stand integrally formed with the lower support insulator.
It has the excellent effect of reducing the number of parts when assembling the switch, reducing manufacturing costs, and simplifying the assembly work by omitting the work of assembling the fuse support stand and support insulator. play.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the invention, FIG. 2 is a front view, and FIG. 3 is a perspective view showing the mounting base and fixed frame. Mounting base 1, lower support insulator 5, fuse support stand 9.

Claims (1)

[Claim for Utility Model Registration] A pair of upper and lower support insulators 4 and 5 are fixed to a mounting base 1, and an arc extinguishing chamber 6 is provided at the tip of the upper support insulator 4 in which a fixed contact 7 is housed. A power supply side connection terminal 8 connected to 7 is fixedly installed, and the lower support insulator 5 is provided with a fuse support stand 9 having upper and lower fuse clamping fittings 10, 11 at both ends for clamping both ends of the current limiting fuse. , fuse support stand 9
A conductive member 13 having one end connected to the upper fuse clamping fitting 10 is disposed on the upper end side, and a load side connection terminal 14 connected to the lower fuse clamping fitting 11 is fixed on the lower end side, and further The upper fuse clamping fitting 1 is inserted through the conductive member 13.
A movable contact blade 12 that is electrically connected to the terminal 0 and driven to open and close by an opening/closing mechanism 20 or the like is rotatably supported on the lower support insulator side of the fuse support base 9, and the movable contact blade 12 is A fuse support for a switch with a current-limiting fuse that can be attached to and separated from the fixed electrode 7, characterized in that the fuse support base 9 is integrally formed with the lower support insulator 5. The stand.