CEILING FAN STRUCTURE WITH DETACHABLE DC CONTROLLER

Abstract

A ceiling fan structure with detachable DC controller includes a canopy having a mounting bracket assembled therein, a filter device assembled in the canopy, a downrod fixed to the mounting bracket at a top end thereof, a bottom end of the downrod passing through the canopy and vertically downward extending, a motor assembled to the bottom end of the downrod, the motor having a shaft, a suspending case enclosing the motor, a DC controller assembled on the suspending case and having a switching circuit and signal wires, each signal wire passing though the suspending case and electrically connected to the motor, the filter device having power wires, each power wire passing through the downrod and electrically connected to the switching circuit of the DC controller, blades fixed around the shaft and the blades rotated by the rotation of the shaft.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a fan structure, and more particularly to a ceiling fan structure with detachable DC controller.

2. Description of the Prior Art

Referring to FIGS. 2-3, a first conventional ceiling fan structure comprises a canopy 91, a power module 96, a downrod 93, a motor 94, a suspending case 95 and a plurality of blades. The canopy 91 has a mounting bracket 92 assembled therein. The mounting bracket 92 is configured to fix the canopy 91 to a ceiling (as shown in FIG. 3). The downrod 93 is fixed to the mounting bracket 92 at a top end thereof. A bottom end of the downrod 93 passes through the canopy 91 and vertically downward extends. The motor 94 is assembled to the bottom end of the downrod 93. The motor 94 has a shaft. The shaft is configured to be driven to rotate. The blades are fixed around the shaft. The blades are rotated by the rotation of the shaft. The suspending case 95 encloses the motor 94. The power module 96 is assembled in the suspending case 95 as the motor 94 and is directly connected to the motor 94. The power module 96 has a power supply 961 and a DC controller 962 which is adjacent to each other. However, because the DC controller 962 is assembled in the suspending case, when the user wants to replace the DC controller 962, the user must remove the suspending case 95 as a whole, so as to expose the DC controller 962. Therefore, the arrangement of the first conventional ceiling fan structure has the replacement inconvenient.

There is a second conventional ceiling fan structure as shown in FIG. 3. Only the difference between the second conventional ceiling fan structure and the first conventional ceiling fan structure is described herein. The power module 96 is assembled in the canopy 91. A plurality of wires 97 from the power supply 961 and the DC controller 962 passes through the downrod 93 and is electrically connected to the motor 94. When the user wants to replace the DC controller 962, the user just removes the canopy 91. On this way, it is more convenient than the replacement for the first conventional ceiling fan structure. However, because the power module 96 as a whole is assembled in the canopy 91, the wires 97 all pass though the downrod 93. Therefore, the inner diameter of the downrod 93 must fit the wires 97 form the power supply 961 and the DC controller 962; in other words, the downrod 93 would be stout. Furthermore, the arrangement in the downrod 93 would be complicated.

The present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a ceiling fan structure with detachable DC controller, wherein the user can replace the DC controller conveniently and the arrangement in a downrod of the fan structure could be simplified.

To achieve the above and other objects, a ceiling fan structure comprises a canopy having a mounting bracket assembled therein, the mounting bracket configured to fix the canopy to a ceiling, a filter device assembled in the canopy, a downrod fixed to the mounting bracket at a top end thereof, a bottom end of the downrod passing through the canopy and vertically downward extending, a motor assembled to the bottom end of the downrod, the motor having a shaft configured to be driven to rotate, a suspending case enclosing the motor, a DC controller assembled on the suspending case and having a switching circuit and a plurality of signal wires, each signal wire passing though the suspending case and electrically connected to the motor, the filter device having a plurality of power wires, each power wire passing through the downrod and electrically connected to the switching circuit of the DC controller a plurality of blades fixed around the shaft and the blades rotated by the rotation of the shaft. Wherein, the suspending case has a lid detachably assembled thereon, the lid covering the DC controller.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view of one embodiment of the present invention;

FIG. 2 is a cross-sectional view of one conventional ceiling fan structure in which a DC controller is assembled in a suspending case; and

FIG. 3 is a cross-sectional view of another conventional ceiling fan structure in which a DC controller is assembled in a canopy.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIG. 1, one embodiment in accordance with the present invention is described as follows. A ceiling fan structure comprises a canopy 1, a filter device 2, a downrod 3, a motor 4, a suspending case 5, a DC controller 6 and a plurality of blades 7.

Referring to FIG. 1, the canopy 1 has a mounting bracket 11 assembled therein. The mounting bracket 11 is configured to fix the canopy 1 to a ceiling. The filter device 2 is assembled in the canopy 1. The filter device 2 can also be illustrated as an electric filter which filters noise of alternating current so as to have the current wavy curve smooth and prevent the current wavy curve form being bumpy.

Referring to FIG. 1, the downrod 3 is fixed to the mounting bracket 11 at a top end thereof. A bottom end of the downrod 3 passes through the canopy 1 and vertically downward extends. The motor 4 is assembled to the bottom end of the downrod 3. The motor 4 has a shaft 41. The shaft 41 is configured to be driven to rotate. The blades 7 are fixed around the shaft 41. The blades 7 are rotated by the rotation of the shaft 41. The suspending case 5 encloses the motor 4.

Referring to FIG. 1, the DC controller 6 is assembled on the suspending case 5. The DC controller 6 has a switching circuit 61 and a plurality of signal wires 62. Each signal wire 62 passes though the suspending case 5 and is electrically connected to the motor 4. The filter device 2 has a plurality of power wires 21. Each power wire 21 passes through the downrod 3 and is electrically connected to the switching circuit 61 of the DC controller 6. The suspending case 5 has a lid 51 detachably assembled thereon. The lid 51 covers the DC controller 6.

All in all, the embodiment of the present invention has several advantages as follows:

First, because the DC controller 6 is assembled on the suspending case 5, when the user wants to replace the DC controller 6, the user just removes the lid 51 so as to expose the DC controller 6. Therefore, the embodiment of the present invention has the replacement easier than the prior art.

Second, in another embodiment, the lid 51 might be unnecessary so as to have the DC controller 6 exposed. However, the lid 51 could not only protect the DC controller 6 from exposure, but also have the whole ceiling fan structure artistic.

Third, because the DC controller 6 is assembled on the suspending case 5 and is very close to the motor 4, the operation to replace the signal wires 62 between the DC controller 6 and the motor 4 is easier than the prior art. In addition, because the DC controller 6 is not assembled in the canopy 1 as the filter device 2, the signal wires 62 don't pass though the downrod 3 as the power wires 21. On this way, the inner diameter of the downrod 3 just has to fit the power wires 21; in other words, the downrod 3 could be slimmer than the prior art. Furthermore, the arrangement in the downrod 3 could be simplified.

Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.

Claims

1. A ceiling fan structure with detachable DC controller comprising:

a canopy having a mounting bracket assembled therein, the mounting bracket configured to fix the canopy to a ceiling;

a filter device assembled in the canopy;

a downrod fixed to the mounting bracket at a top end thereof, a bottom end of the downrod passing through the canopy and vertically downward extending;

a motor assembled to the bottom end of the downrod, the motor having a shaft configured to be driven to rotate;

a suspending case enclosing the motor;

a DC controller assembled on the suspending case and having a switching circuit and a plurality of signal wires, each signal wire passing though the suspending case and electrically connected to the motor, the filter device having a plurality of power wires, each power wire passing through the downrod and electrically connected to the switching circuit of the DC controller; and

a plurality of blades fixed around the shaft, the blades rotated by the rotation of the shaft.

2. The ceiling fan structure with detachable DC controller as claimed in claim 1, wherein the suspending case has a lid detachably assembled thereon, the lid covering the DC controller.