Driving shaft of electric switch

Abstract

The shaft (10) has a groove (16) running transverse to a longitudinal axis of a shaft body (12) and formed at a cam wheel part (14). Two ends (182, 184) of a spring (18) e.g. torsional spring and locking ring, are protruded into the groove. One of the ends of the spring rests at a sliding part in a closed condition while the other end is not in contact with the sliding part. The latter end of the spring rests at the sliding part in an opening condition when the former end is not in contact with the sliding part. The ends of the spring include a curved part.

Description

technical field [0001] The invention relates to a drive shaft of an electric switch, in particular to an electric switch drive shaft with a spring installed at one end. Background technique [0002] Electrical switches are usually used in power systems to interrupt the current by separating the matching electrical contacts, so as to protect the system, loads and users, and avoid electrical faults and malfunctions. Usually, the separation and re-closing of electrical contacts are accomplished by means of appropriate power mechanisms. At present, the opening and closing operation of electrical switches mainly relies on the main spring as the driving force to push the drive shaft to the closing or opening position. When the operator manipulates the switch to close and open, it will bear a large impact load . [0003] US Patent No. 5861784 discloses a manual override mechanism for electrical switches. This device has installed a torsion spring between driving gear and sliding...

AI Technical Summary

Problems solved by technology

The device installs a torsion spring between the driving gear and the sliding mechanism, and the two ends of the torsion spring are fixed. Its function is to keep the relative position of the main spring and the gear stable, but the torsion spring is not installed on the drive shaft.

Images