Swing structure for a ceiling fan

• US 8,186,941 B2
• Filed: 03/20/2008
• Issued: 05/29/2012
• Est. Priority Date: 03/20/2008
• Status: Active Grant

• Current Assignee: Air Cool Industrial Company Limited
• Original Assignee: Air Cool Industrial Company Limited
• Inventors: Lai, Huo-Cheng
• Primary Examiner(s): Look, Edward
• Assistant Examiner(s): BROWN, ADAM WAYNE
• Application Number:
  US12/052,441
• Publication Number:
  US 20090238690A1
• Time in Patent Office: 1,531 Days
• Field of Search: 415/126, 416/59, 416/148, 416/102, 416/117, 416/118, 417/423.15, 417/424.1
• US Class Current: 415/126
• CPC Class Codes: F04D 25/088 Ceiling fans
• CPC Class Codes: F04D 25/105 by changing rotor axis direction, e.g. oscillating fans interconnecting rotary motion and oscillating motion F16H

Abstract

A swing structure for a ceiling fan includes a reduction motor disposed with a driving wheel having its center fixed with a connecting rod. An intermediate aluminum ring is mounted on the outer circumference of the weight center of a fan motor, having a swing spindle provided with at least one first bearing, and a threading spindle disposed at the other end set therein with a second bearing. The swing spindle has one end connected with the connecting rod. The swing velocity of the ceiling fan is controlled by the reduction motor not affected by different rotating velocities of the fan motor. A hanging tube has its lower ends respectively fixed with the swing spindle and the threading spindle and its upper end secured on a support base, enabling a ceiling fan in stalled at different angles and still able to swing smoothly.

Claims

1. A swing structure for a ceiling fan comprising:

a front cover being shaped as a ring, said front cover having its opposite sides respectively cut with a first U-shaped notch and a second U-shaped notch;

a swing mechanism received in said front cover, said swing mechanism provided with a motor, said motor disposed with a main shaft at a location corresponding with a center of said front cover, said main shaft inserted through said front cover base to be pivotally assembled with a fan blade, said motor having its upper end fixed with a reduction motor, said reduction motor having one side pivotally fixed thereon with a driving wheel, said driving wheel pivotally connected axially with one end of a connecting rod;

an intermediate aluminum ring assembled on an outer circumference of a weight center of said swing mechanism, said intermediate aluminum ring having one end provided with a swing spindle at a location corresponding with said first U-shaped notch, said intermediate aluminum ring having another end fixed with a hollow threading spindle at a location tallying with said second U-shaped notch, said swing spindle fitted thereon with a first three-way tube, said first three-way tube having its opposite ends respectively formed with two first horizontal end openings communicating with each other, one of said first horizontal end openings disposed with a sidewise fixing projection pivotally combined with another end of said connecting rod, a first vertical tube provided extending up between said first horizontal end openings, said swing spindle in said first horizontal end openings fitted thereon with at least one first bearing, said threading spindle fitted thereon with a second three-way tube, said second three-way tube having its opposite ends respectively formed with a second horizontal end opening communicating with each other, a second vertical tube extended upward between said second horizontal end openings, said threading spindle in said second horizontal end openings having at least one second bearing fitted thereon, said threading spindle bored with a threading opening at a location matching with said second vertical tube;

a hanging tube formed with two fixing tubes respectively fitted and fixed in said first vertical tube and said second vertical tube, said two fixing tubes having their ends secured on at least one support base, said support base fixing said ceiling fan at a preset location; and

said motor has its outer circumference assembled with an outer casing and said reduction motor is mounted on said outer casing, said outer casing having its lower end combined with said front cover, said intermediate aluminum ring having its upper circumferential edge bent toward an upper circumferential edge of said outer casing to be fixed on an upper end of said outer casing.

2. The swing structure for a ceiling fan as claimed in claim 1, wherein said swing mechanism has one end opposite to said front cover covered thereon with a decorative rear cover, said rear cover cut with two opposite notches respectively matching with said first U-shaped notch and said second U-shaped notch of said front cover.

3. The swing structure for a ceiling fan as claimed in claim 1, wherein said first horizontal end opening and said second horizontal end opening at opposite ends of said intermediate aluminum ring are respectively covered with a first decorative cover and a second decorative cover.

4. The swing structure for a ceiling fan as claimed in claim 1, wherein said two fixing tubes have their inner ends connected together to let said hanging tube bent and formed as an inverted U-shape, having its intermediate portion formed integral with an upright combining tube extending upward to be fixed on said support base that is secured on a ceiling.

5. The swing structure for a ceiling fan as claimed in claim 1, wherein said two fixing tubes are respectively fixed on two support bases that are secured on said ceiling.

6. The swing structure for a ceiling fan as claimed in claim 1, wherein said two fixing tubes have their inner ends connected together to let said hanging tube bent as an inverted U-shape, having its intermediate portion formed integral with an upright combining tube extending upward, said upright combining tube having another end combined with a connecting rod having another end fixed with a support block, said support base disposed with a long rectangular rail fixed on said ceiling, said long rectangular rail bored with an axial slide groove with a downward opening, said long rectangular rail having its opposite sides respectively provided with a stop member protruding horizontally toward a center, said support block inserted into said slide groove through one short side of said support base.

7. The swing structure for a ceiling fan as claimed in claim 1, wherein said fixing tubes of said hanging tube have one end respectively fitted fixedly in said first vertical tube and said second vertical tube and another end bent downward in a same direction to be connected together and having its central portion bent downward to one side and then extended transversely to be fixed on said support base that is secured on a side wall.