|Publication number||USRE39448 E1|
|Application number||US 09/952,421|
|Publication date||Dec 26, 2006|
|Filing date||Sep 14, 2001|
|Priority date||Nov 17, 1998|
|Also published as||USRE43629|
|Publication number||09952421, 952421, US RE39448 E1, US RE39448E1, US-E1-RE39448, USRE39448 E1, USRE39448E1|
|Original Assignee||King Of Fans, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (34), Referenced by (8), Classifications (5), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Field of the Invention
This invention relates to a connecting device for a ceiling fan, more particularly to a connecting device for connecting a fan blade to a rotor of a motor of a ceiling fan.
2. Description of the Related Art
To facilitate assembly of the ceiling fan, referring to
However, the assembly of the mounting arm 21 on the rotor (not shown) is still inconvenient to conduct. In addition the mounting arm 21 involves increased packaging and transport costs.
The object of the present invention is to provide a connecting device which is easy to fabricate and which can permit substantial reductions in the packaging and transport costs thereof.
According to this invention, a connecting device includes a bottom member with a periphery for attaching on a rotor of a motor, a circumferential wall which extends upwardly from the periphery, and an anchoring end for anchoring on the bottom member such that the mounting arm is oriented in a radial direction relative to the bottom member. A tightening member is disposed between the anchoring end and the bottom member to tighten the anchoring end relative to the bottom member through a clamping force generated in a circumferential direction of the bottom member when the anchoring end is pulled away from the bottom member in the radial direction. A guiding member is disposed between the anchoring end and the bottom member to guide the anchoring end to move in the radial direction relative to the bottom member. A retaining member is disposed between the tightening member and the anchored end in the radial direction, and has an engaging spring member abutting against the circumferential wall once the anchoring end is moved away from the bottom member.
Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments of the invention with reference to the accompanying drawings in which:
Before the present invention is described in greater detail, it should be noted that same reference numerals have been used to denote like elements throughout the specifications.
A mounting arm 40 includes a plate-like anchored end 43 which is adapted to be secured on an upper surface wall of the fan blade 50, and an anchoring end 41 opposite to the anchored end 43 in the radial direction. The anchoring end 41 has two elongate rails 411, each of which extends in the radial direction to correspond with a respective one of the elongate grooves 321 so as to fit slidably in the respective elongate groove 321. Since each of the elongate grooves 321 and the elongate rails 411 extends in the radial direction, that is, a distance between the elongate grooves 321 is increased gradually from the inner side of the mounting block 32 to the outer side, a clamping force is generated to tighten each elongate rail 411 in the corresponding elongate groove 321 when the anchoring end 41 of the mounting arm 40 is pulled outwardly from the inner side of the mounting block 32 to the outer side. Thus, the anchoring end 41 can anchor tightly on the mounting block 32 to prevent further outward movement of the anchoring end 41 relative to the mounting block 32.
A retaining member 42 includes a spring plate 421 which is mounted on the mounting arm 40 at one end, and which has an engaging spring member or tongue 422 at the other end that extends toward the anchoring end 41. Thus, once the elongate rails 411 of the anchoring end 41 are moved in the elongate grooves 321 from the inner side toward the outer side, the engaging spring tongue 422 abuts against the annular slanting wall 30 b and provides an upward biasing force thereto, thereby preventing movement of the anchoring end 41 inwardly relative to the mounting block 32.
Alternatively, referring to
As illustrated, the anchored end 43 of the mounting arm 40 and the mounting block 32 can be mounted respectively on the fan blade 5O and the bottom member 30 a by operators in a manufacturing plant. There is no need to increase the size of the package, thereby reducing substantially the packaging and transport costs.
Subsequently, when it is desired to assemble the fan blade 50 on the bottom member 30 a, the elongate rails 411 of the anchoring end 41 are moved in the elongate grooves 321 from the inner side toward he outer side in the radial direction. Then, the engaging spring tongue 422 (or 371) of the retaining member 42 (or the biasing member 37) abuts against the slanting wall 30 b (or the anchoring end 30 b) so as to retain firmly the anchoring end 41 to the mounting arm 32.
A tightening member includes a mounting hole 45 which is formed in the anchoring end 41 between the the elongate rails 44, and an elastomeric coupling member 35 which is mounted securely on the bottom member 30 a between the elongate rails 34 by a screw fastener 353. The mounting hole 45 is confined by an inner peripheral wall which has a constricted portion 453 to divide the mounting hole 45 into a notch portion 452 and a bore portion 451 that is distal to the bottom member 30 a and that has a dimension larger than that of the notch portion 452. The coupling member 35 includes a shank 351 which has an upper end for mounting on the bottom member 30 a and a lower end that extends downward from the upper end, and a peripheral flange 352 which projects radially and outwardly from the lower end of the shank 351 and which has a dimension larger than that of the notch portion 452 and smaller than that of the bore portion 451. Thus, the coupling member 35 can fit snugly in the notch portion 452 by passing the shank 351 thereinto after the peripheral flange 352 has been brought to pass through the bore portion 451.
In assembly, similar to the first preferred embodiment, the elongate rails 44 of the anchoring end 41 are fitted in the elongate grooves of the bottom member 30 a outwardly to the periphery of the bottom member 30 a. At the same time, the shank 351 of the coupling member 35 is moved to be fitted snugly in the notch portion 452, thereby retaining the anchoring end 41 to the bottom member 30 a and avoiding further outward movement of the anchoring end 41 relative to the bottom member 30 a by virtue of the inner peripheral wall of the notch portion 452. In addition, with reference to
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|JPH03272308A||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7527478 *||May 19, 2006||May 5, 2009||Hunter Fan Company||Fan blade mounting system|
|US8356979||Sep 30, 2009||Jan 22, 2013||Hunter Fan Company||Fan blade mounting system|
|US8668451 *||Aug 30, 2010||Mar 11, 2014||Hunter Fan Company||Fan blade mounting system|
|US9039377||Jul 21, 2011||May 26, 2015||Lowe's Companies, Inc.||Fan assemblies and methods for assembling same|
|US20070269314 *||May 19, 2006||Nov 22, 2007||Pearce Richard A||Fan blade mounting system|
|US20100104442 *||Sep 30, 2009||Apr 29, 2010||Hunter Fan Company||Fan blade mounting system|
|US20110058947 *||Aug 30, 2010||Mar 10, 2011||Hunter Fan Company||Fan Blade Mounting System|
|USRE43629 *||Mar 24, 2006||Sep 4, 2012||Chien Luen Industries Co., Ltd., Inc.||Connecting device for connecting a fan blade to a rotor of a motor of a ceiling fan|
|U.S. Classification||403/315, 416/206, 403/329, 403/363|
|Sep 15, 2008||AS||Assignment|
Owner name: CHIEN LUEN INDUSTRIES CO., LTD., INC., FLORIDA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KING OF FANS, INC.;REEL/FRAME:021523/0974
Effective date: 20080825
|Nov 19, 2010||FPAY||Fee payment|
Year of fee payment: 12