Blade fixing device for electric fan

Abstract

Abstract PURPOSE:To simplify the fixing and unfixing of a fan blade by providing a spring between a shaft and the inner bottom of a boss, and locking a shaft pin in a notch on the side wall of the boss. CONSTITUTION:The shaft 5 of an electric motor 4 is inserted into the boss 3 of a fan blade 2, and a shaft pin 6 is locked in a hook-shaped notch 1 formed on the boss 3, then the blade 2 is slightly rotated. Then when a hand on the blade 2 is loosed, the restoring force of a spring 7 pushes a shaft 5 toward the motor 4 to lock the shaft pin 6 in the notch 1. Thus the blade 2 is fixed to the motor 4. Consequently, the fixing of the blade can be simplified, and its vibration and falling off can also be prevented.

Inventors

• 👤 Hiroshi Yoshikawa
• 👤 宏 吉川

Bibliographic Details