Transversal suspension rod for a ceiling fan

A transversal suspension rod for a ceiling fan is primarily composed of an extensible tube rack set, an assembly member, and a wiring box. Upon implementing, the extensible tube rack set is supported between two parallel beams, then the wiring box is locked below the extensible tube rack set using the assembly member, and finally a bracket is locked at a bottom of the wiring box with screws to hang a ceiling fan, so as to decrease a difficulty in assembling with the assembly member.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention relates to a transversal suspension rod for a ceiling fan and more particularly to a transversal suspension rod for a ceiling fan which is installed into a ceiling from a small opening to be supported and fixed between two beams, can be used safely, assembled conveniently, and is provided with a good firmness.

(b) Description of the Prior Art

Referring toFIG. 5andFIG. 6, a conventional transversal suspension rod for a ceiling fan is primarily composed of an extensible tube rack set a, an assembly member b, and a wiring box c. Upon implementing, the extensible tube rack set a is supported between two parallel beams d, next the wiring box c is locked below the extensible tube rack set a using the assembly member b, and finally a bracket is locked at a bottom of the wiring box c by screws to hang a ceiling fan (not shown in the drawing).

As shown in the aforementioned conventional structures, the extensible tube rack set a includes an outer tube a1, an inner tube a2, two locking members a3which are fixed at one end of the outer tube a1and the other end of inner tube a2respectively, and positioning plates a4which are located at two ends of the tube rack set a respectively, with a plurality of thorns a41projected on a surface at an exterior side of the positioning plate a4. In assembling, the outer tube a1is first rotated to lock the locking member a3which is fixed at the inner tube a2end into one beam d, and to force the positioning plate a4in front of the locking member a3to be snapped into the beam d for fixing (the positioning plate a4is also provided with an effect of keeping the extensible tube rack set a to be parallel to a ceiling). Next, the outer tube a1is pulled out, enabling the positioning plate a4and a locking member a3which are fixed at the end of outer tube a1to be close to another beam d. Finally, the outer tube a1is rotated again to lock the locking member a3which is fixed at the end of outer tube a1into the beam d, and to force the positioning plate a4in front of the locking member a3to be snapped into the beam d, so as to achieve an object of fixing the extensible tube rack set a.

However, as screws a31of the locking members a3and the thorns a41of positioning plates a4are exposed out, they are easy to harm people or a surface of an appliance by a mistake. In addition, as the extensible tube rack set a needs to be pulled out manually in stretching the set, and is particularly more difficult to be extended at a smaller opening of ceiling, it will cause a difficulty in implementing.

Furthermore, the wiring box c of conventional structure is completely made by a metallic material, and an interior of the wiring box c is provided with a plurality of fixing holes or screw-holes (not shown in the drawing), and slots or openings for fixing electric wires (not shown in the drawing) in order to be widely adapted to all kinds of requirements; whereas those structures should be welded together by hardware elements such as bolts and nuts, which will increase a manufacturing cost and working hours. On the other hand, if there are no sufficient fitting facilities (such as wire-clipping slots, through-holes, or screw-holes, etc.) for simplification, then it will be inconvenient to install a ceiling fan. Accordingly, it is necessary to improve the aforementioned conventional structure.

SUMMARY OF THE INVENTION

The primary object of present invention is to provide a transversal suspension rod for a ceiling fan, wherein two ends of an extensible tube rack set are provided with hidden claws, and an interior of the extensible tube rack set is provide with an automatic elongation structure, so as to increase a safety of usage, and a convenience in installation.

Another object of the present invention is to provide a transversal suspension rod for a ceiling fan, wherein a wiring box is made by a metallic box and a plastic box which are pressed into one body with plastic rivets. An interior of the plastic box is integrally formed with a plurality of fixing holes and a plurality of side openings; whereas a center of the plastic box is surrounded by wire-clipping slots in a sawtooth shape, so as to provide a convenience to a user.

Still another object of the present invention is to provide a transversal suspension rod for a ceiling fan, wherein an opening place of a fixing hole of the plastic box of wiring box used for locking with an assembly member is provided with an inverted hook, so as to decrease a difficulty in assembling with the assembly member.

In order to achieve the aforementioned objects, interiors of the positioning plates sheathed at two ends of the extensible tube rack set are provided with the hidden claws, respectively. The positioning plate is a triangular plate, above which is transversally located with a round tube, and an interior of which is provided with a baffle. The positioning plate can be sheathed at an exterior of the corresponding locking member with an end of the round tube, and an interior of the other end of round tube is orderly provided with a claw-piece and a plug. A center of the aforementioned baffle is provided with a round hole and a plurality of long holes at a rim of the round hole. The claw-piece is in a ring-shape, a front end of which is provided with a plurality of thorns, and a rear end of which is provided with a plurality of abutting portions corresponding to the long holes of baffle. An end of the plug is a disk of a larger diameter, whereas the other end is a cylinder of a smaller diameter. The cylinder is flexible, can be transfixed into the round hole at the center of baffle, and its end part is formed outward with an inverted hook. A center of the plug is provided with a small hole for protruding a screw of the locking member. In assembling, the claw-piece is assembled into the round tube of positioning plate with the plug, and the abutting portions of claw-piece are transfixed into the baffle to be extended out by a pushing of the locking member, and can be snapped into beams by a pressure resulting from a rotation of the screws of locking members into the beams, such that the transversal suspension rod can be firmly supported and assembled.

According to the aforementioned structures, an automatic elongation structure is located between the locking members being fixed on the outer tube and inner tube of extensible tube rack set, respectively. The automatic elongation structure includes a spring and a gliding rod. The gliding rod can be abutted on the locking member fixed at the outer tube end, by an elastic force released from the spring, such that the outer tube can be extended out automatically, to achieve an object of quick elongation. Moreover, a notch and a hook tip which is projected inward are located on the outer tube, at a place close to an end opening of the locking member fixed at the inner tube. The notch and the hook tip are opposite to a lump and an L-shape slot on the locking member fixed at the inner tube, respectively. When the notch of outer tube is locked with the lump, the locking member of inner tube can be driven by the outer tube so that the locking member is rotated into the beam, and a locking state is formed when the hook tip of outer tube is latched into the L-shape slot. On the other hand, when the outer tube is reversely rotated to release the hook tip from the L-shape slot, an unlocking state is formed to release the elastic force, thereby achieving an effect of automatically and quickly elongating the extensible tube rack set.

Furthermore, the wiring box of present invention is made by a metallic box and a plastic box which are pressed into one body with the plastic rivets. The interior of the plastic box is integrally formed with the plurality of fixing holes, and the plurality of side openings; whereas the center of plastic box is surrounded by the sawtooth-shape wire-clipping slots, so as to facilitate assembling and to reduce working hours for manufacturing. On the other hand, the opening place of one fixing hole used for locking with the assembly member is provided with the elastic inverted hook which is projected inward, so as to decrease the difficulty in assembling with the assembly member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS. 1 to 3, a transversal suspension rod for a ceiling fan of the present invention comprises primarily an extensible tube rack set10, an assembly member20, and a wiring box30, wherein, upon implementing, the extensible tube rack set10is supported between two parallel beams40, next the wiring box30is locked below the extensible tube rack set10using the assembly member20, and finally a bracket50is locked at a bottom of the wiring box30with screws to hang a ceiling fan60.

The extensible tube rack set10includes an outer tube11, an inner tube12, and two locking members13which are fixed at one end of the outer tube11and the other end of inner tube12, respectively. In addition, two positioning plates14which are provided with hidden claws are located at two ends of the tube rack set10, respectively. The positioning plate14is a triangular plate, above which is transversally located with a round tube141, and an interior of which is provided with a baffle142. The positioning plate14can be sheathed at an exterior of the corresponding locking member13with an end of the round tube141, and an interior of the other end of round tube141is orderly provided with a claw-piece143and a plug144. A center of the aforementioned baffle142is provided with a round hole421and a plurality of long holes422at a rim of the round hole421. The claw-piece143is in a ring-shape, a front end of which is provided with a plurality of thorns431, and a rear end of which is provided with a plurality of abutting portions432corresponding to the long holes422of baffle142. An end of the plug144is a disk441of a larger diameter, whereas the other end is a cylinder442of a smaller diameter. The cylinder442is flexible, can be transfixed into the round hole421at the center of baffle142, and its end part is formed outward with an inverted hook443. A center of the plug144is provided with a small hole444for protruding a screw131of the locking member13. In assembling, the claw-piece143is assembled into the round tube141of positioning plate14with the plug144, and the abutting portions432of claw-piece143are transfixed into the long holes422of baffle142to be extended out by a pushing of the locking member13, and can be snapped into the beams40(as shown inFIG. 3) by a pressure resulting from a rotation of the screws131of locking members13into the beams40, such that the transversal suspension rod can be firmly supported and assembled.

According to the aforementioned structures, an automatic elongation structure15is located between the locking members13being fixed on the outer tube11and inner tube12of extensible tube rack set10, respectively. The automatic elongation structure15includes a spring151and a gliding rod152. The gliding rod152can be abutted on the locking member13fixed at the outer tube11end, by an elastic force released from the spring151, such that the outer tube11can be extended out automatically, to achieve an object of quick elongation. Whereas, for the aforementioned gliding rod152, an outer circumference of its piston521is installed with an O-ring522to be tightly connected with the inner tube12, and an end opening of the inner tube12being extended outward from an abutting rod523of the gliding rod152is provided with a sealing cap524having an inner hole of a diameter such that the abutting rod523can just pass through, and that air can be slowly drained out when the gliding rod152is moving outward, so as to prevent the extensible tube rack set10from bursting out while being elongated.

Moreover, a notch111and a hook tip112(as shown inFIG. 2) which is projected inward are located on the outer tube11, at a place close to an end opening of the locking member13fixed at the inner tube12. The notch111and the hook tip112are opposite to a lump132and an L-shape slot133on the locking member13fixed at the inner tube12, respectively. When the notch111of outer tube11is locked with the lump132, the locking member13of inner tube12can be driven by the outer tube11so that the locking member13is rotated into the beam30, and a locking state is formed when the hook tip112of outer tube11is latched into the L-shape slot133. On the other hand, when the outer tube11is reversely rotated to release the hook tip112from the L-shape slot133, an unlocking state is formed to release the elastic force, thereby achieving an effect of automatically and quickly elongating the inner and outer tubes11and12of extensible tube rack set10.

On the other hand, the wiring box30of present invention is made by a metallic box31and a plastic box32being pressed into one body with plastic rivets33(as shown inFIG. 4). A plurality of fixing holes321, and a plurality of side openings322are integrally formed on the plastic box32, with wire-clipping slots323in a sawtooth shape surrounding a center of its interior. The aforementioned fixing holes321allow screws71of the assembly member20, and screws72,73for fixing the bracket50top-down or bottom-up, to be transfixed. The openings322are corresponding to pre-built holes311of the metallic box31to facilitate a connection of wiring tubes. By using a sawtooth-shape notch above the wire-clipping slot323, an electric wire can be clipped and stabilized, enabling the wiring to be tidier and prettier, thereby further facilitating the assembling and reducing working hours for manufacturing.

In addition, an opening place of one fixing hole321used to lock with the assembly member20is provided with an elastic inverted hook211which is projected toward an interior of the hole. When one screw71is transfixed into the fixing hole321, the screw71can be fixed in advance by a clipping of the inverted hook211, so as to facilitate locking on a nut711and to decrease a difficulty in assembling with the assembly member20.