Fan structure convertible between desk type and floor type

Abstract

A fan structure is disclosed to include a base member having a socket at the center, a fan assembly, a first support member connected to the fan assembly and having a bottom stub tube insertable into the socket of the base member and lockable thereto by a screw member to support the fan assembly above the base member for use as a desk fan, and a second support member selectively connectable between the bottom stub tube of the first support member and the socket of the base member to support the fan assembly and the first support member above the base member for use a floor fan.

1 . A fan structure, comprising:
 a fan assembly, said fan assembly comprising a fan blade and a fan motor adapted to rotate said fan blade;   a base member for positioning on a bearing surface, said base member having a top wall, a socket located on the center thereof, said socket having a top opening formed in said top wall, a bottom opening opposite to said top opening and a slot cut through the periphery thereof in communication with said top opening;   a first support member connected to said fan assembly for connection to said base member, said first support member having a bottom stub tube insertable into said socket of said base member and a screw hole extending through the periphery thereof in communication with the space inside said bottom stub tube;   a second support member connectable between said bottom stub tube of said first support member and said socket of said base member to support said fan assembly and said first support member on said base member, said second support member comprising a first connection rod and a second connection rod respectively extended from top and bottom ends thereof, said first connection rod being insertable into said bottom stub tube of said first support member, said second connection rod being insertable into said socket of said base member, said second connection rod having an outer thread extending around the periphery thereof;   a screw member adapted for threading into said screw hole to lock said first support member to said base member after insertion of said bottom stub tube of said first support member into said socket of said base member, or to lock said second support member to said first support member after insertion of said first connection rod of said first support member into said bottom stub tube of said first support member; and   a lock nut for threading onto said outer thread of said second connection rod of said second support member to lock said second support member to said base member after insertion of said second connection rod of said second support member into said socket of said base member.   
     
     
         2 . The fan structure as claimed in  claim 1 , wherein said first connection rod of said second support member has a locating groove extending around the periphery thereof for the engagement of said screw member.