JPS6334562B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a handle locking device.

Conventional circuit breakers and disconnectors have a problem in that when someone accidentally touches the handle with their hand or body part during electrical work, the switch turns off and the current is temporarily stopped. Ta.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a handle locking device in which the handle does not operate even if a hand accidentally touches the handle.

An embodiment of the invention is shown in FIGS. 1 and 2. That is, this handle lock device is constructed by installing a shaft 2 on a frame 1, forming an arcuate groove 3 in the frame 1 with the shaft 2 as the center of curvature, and locking the handle with both ends 3a and 3b directed toward the center of the shaft 2. Form into shape. On the other hand, the handle 4 has a slit 5 formed from the inner end 4a to the center.
is engaged with the shaft 2, and a spring 6, for example a coil spring, is compressed between the shaft 2 and the bottom of the slit 5 to bias it in the direction of the outer end 4b. A protrusion 7 is formed on the end portion 4a and is slidably engaged with the arcuate groove 3. 8 is a cover for the circuit and disconnector.

In FIG. 1, when the handle 4 is in the on position, the protrusion 7 is engaged with one end 3a of the arcuate groove 3 and is supported by the spring 6. Therefore, in this state, the handle 4 cannot be tilted to the opposite OFF state, and even if a hand or a part of the body accidentally touches the handle 4, the handle 4 will not operate. On the other hand, when turning off the handle 4, when the handle 4 is pushed toward the inner end and the protrusion 7 is positioned in the arcuate groove 3, the protrusion 7 can slide in the arcuate groove 3 as shown in FIG. can be turned in the opposite direction.

In addition, in circuit breakers, overcurrent or short-circuit current activates the tripping fitting, and the tripping operation can be performed through the latch fitting, link, and movable contact plate independently of the handle, so this handle locking device cannot be applied as is. Can be done. However, trip display cannot be performed with the steering wheel in a neutral position.

In addition, the handle lock device of the present invention can be applied to switches and the like.

As described above, the handle lock device of the present invention includes a frame which is provided with a shaft and forms an arcuate groove with the shaft as the center of curvature, and in which both ends of the arcuate groove are hooked toward the center in the axial direction. The shaft has a slit in the center of the inner end so that the shaft can be loosely inserted therein so as to be able to move in the longitudinal direction, and the projection is biased by a spring toward the outer end with respect to the shaft and is provided on the inner end thereof. and a handle that is slidably engaged with the arcuate groove, so that the handle can be prevented from operating even if a hand or a part of the body accidentally touches the handle with a simple structure.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the invention, and FIG. 2 is a side view of the operating state. 1... Frame, 2... Shaft, 3... Arc groove, 3
a, 3b... Both ends, 4... Handle, 4a...
Inner end, 4b...outer end, 5...slit, 6...
...Spring, 7...Protrusion.

Claims (1)

[Claims] 1. A frame that is provided with an axis and forms an arcuate groove with this axis as the center of curvature, and that both ends of the arcuate groove are hooked toward the center in the axial direction, and that can be moved longitudinally to the center of its inner end. The handle has a slit into which the shaft is loosely inserted, is biased by a spring toward the outer end of the shaft, and has a projection provided at the inner end of the handle that is slidably engaged with the arcuate groove. Handle lock device with.