Patent Application
20060039789
The present invention relates to a hub structure; more particularly, relates to a metal sheath required by a fan being firmly locked in a containing space of a fan hub to prevent from looseness or departure.
A hub structure according to the prior art (as shown in
According to the structure of the prior art, the metal sheath 43 is fixed on the inner surface of the hub 4 by glue-dispensing or expanding-and-shrinking. Though the metal sheath 43 can be fixed in the hub 4 in this way, after a period of time of use, the glue may often be spoiled or the blades may be over-heated for having been run for a long time so that a gap may appear between the metal sheath 43 and the hub 4 to loosen or depart the metal sheath 43 and the hub 4, or, even to make the fan malfunctioned. So, the hub structure according to the prior art can not fulfill the needs of the user on actual use.
Therefore, the main purpose of the present invention is to provide a plurality of locking parts to lock the metal sheath required by a fan to make the metal sheath be firmly fixed in a containing space of the hub while being prevented from looseness or departure.
To achieve the above purpose, the present invention is a hub structure for a heat-dissipation fan, comprising a hub, a plurality of blades deposited on the outside surface of the hub, and a plurality of locking parts deposited on the inner surface of the hub. Therein, the hub includes a containing space; and the locking parts are deposited on the inner surface of the hub. Each locking part comprises an arc surface; a hook extended from the top of the locking part; and a leaning surface at the end of the hook. Accordingly, a metal sheath required by a fan can be locked by the locking parts so that the metal sheath can be firmly fixed in the containing space of the hub while being prevented from looseness or departure.
The present invention will be better understood from the following detailed description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which
The following descriptions of the preferred embodiment are provided to understand the features and the structures of the present invention.
Please refer to
The hub comprises a containing space 11; and a plurality of ribs (not shown in the figures) deposited on the bottom of the containing space 11 to strengthen the hub structure.
The blades 2 are deposited on the outside surface of the hub 1 whose number can be even or odd; and they are arranged with a same distance in between whose shape can be an airfoil or whose surface can be a curved surface, a leaning surface or a cambered surface.
The locking parts 14 are deposited on the bottom of the containing space 11 near the side wall of the containing space 11 in a proper distance. Each locking part 14 comprises a cambered surface; a hook 15 extended from the top toward the side wall of the containing space 11; and a leaning part 16 at the end of the hook 15. By the above structure, a hub structure for a heat-dissipation fan is obtained, where a metal sheath 3 can be firmly locked in the containing space 11 of the hub 1 by the locking parts 14 to prevent from looseness or departure.
Please refer to
The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.
