Patent ID: 6015262
Filing Date: 2000-01-18
Classification: F04D,Y10T

Abstract:
An electric fan apparatus, comprising:a housing having a front part and a rear part which extend in a longitudinal direction;a driving motor disposed in said housing and provided with an output spindle, said output spindle having a front end portion extending outwardly of said front part, and a rear end portion provided with a worm section which extends into said rear part;a pair of swivel joints respectively disposed on an outer circumference of said front part and diametrically opposite to each other in a transverse direction relative to said longitudinal direction;an inner annular member sleeved on said outer circumference of said front part, and fixedly connected to said swivel joints at opposite sides of said outer circumference so as to swivel relative to said outer circumference;an outer annular member sleeved retainingly on said inner annular member in such a manner that said inner annular member is angularly adjustable relative to said outer annular member;a swing rod disposed in said rear part of said housing, said swing rod having a first proximate end relative to said worm section and mounted pivotally on said rear part, and a first distal end extending towards said front part;a drive transmission member disposed in said rear part to transmit an axial rotation of said worm section to swing said first distal end of said swing rod relative to said first proximate end in a plane parallel to said worm section;an anchoring member having a second proximate end pivotally mounted on said inner annular member and a second distal end fixedly anchoring said first distal end of said swing rod to arrest movement of said second distal end, thereby driving said first proximate end as well as said rear part to swing around said swivel joints;an upright stand having an upper end connected fixedly to an outer periphery of said outer annular member; andan impeller fixedly mounted on said front end portion of said output spindle and rotated by said driving motor.