JPH02188693A - Ceiling fan - Google Patents

Abstract

PURPOSE:To facilitate the blade mounting operation and firmly support the blade by inserting an end of the blade between the lower face of an upper supporting frame and a boss of a rotor, and fastening the end with screw. CONSTITUTION:Bearing parts 1a, 2a are fitted into a fixed shaft 4 to be fixed relative to a stator 3, and a rotor 5 is rotatably journalled to form a motor 10 by fitting an upper supporting frame 1 and a lower supporting frame 2 respectively to the bearing parts 1a, 2a. Upper and lower coverings 7, 8 are fixed on outside of the upper and lower supporting frames 1, 2, and a mounting hole 16 is provided on an end 15 of a blade 13. The end 15 of the blade is inserted through an opening 17 of the upper supporting frame 1 into a clearance 14 and fixed to a boss 5b of the rotor 5 with a screw 18, and the blade 13 is mounted to the motor 10. The blade 13 can thus be temporarily fixed to facilitate assembly operation. Since both faces of the end 15 of the blade are held and fixed by the upper supporting frame 1, the boss 5b and the opening 17, the blade 13 can be firmly held and supported.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ceiling fan that is suspended from a ceiling surface.

BACKGROUND OF THE INVENTION In general, ceiling fans often use external rotor electric motors with a rotor on the outside and a stator on the inside.

Conventional ceiling fans of this type are shown in FIGS. 4 to 6.

That is, a pipe-shaped shaft 104 stands vertically at the center of the disc-shaped stator 103, and an annular rotor 105 is arranged close to the outer periphery of the stator 103. Above and below this rotor 105 are an upper support frame 1o1 and a lower support frame 102.
is integrally fixed to the boss 105a of the rotor 1α with a screw 106.

Bearing portions 111 and 112 are provided above and below the stator 103 to support the shaft 10.
4, and the upper support frame 101 and the lower support frame 102 fit into the bearing parts 111 and 112 at the center, so that the upper support frame 101, the lower support frame 102, and the rotor 105 can rotate freely. It is supported pivotally and forms an electric motor 100.

An upper jacket 107 and a lower jacket 108 are fixed to the outer sides of the upper support frame 1o1 and the lower support frame 102 with screws 109 and 110. In addition, the flange 116 is caulked with a plurality of rivets 114 on one end surface of the blade plate 1130, and the 7
The vane plate 113 is attached to the electric motor 100 by screwing it to the boss 105a of the rotor 106 using a vane plate attachment hole 116 provided in the flange 116.

Problems to be Solved by the Invention In the above-mentioned conventional configuration, the blade plate 113 is fixed to the upper support frame 101 of the electric motor 100 with screws through the blade plate mounting hole 116, so that the reaction force of the blade plate 113 blowing air downward is caused. In order to receive an upward force, the blade mounting hole 11
Load tends to concentrate on the fixing screw 117 of No. 6, and since it is used for a long period of time in both summer and winter, the fixing screw 117 may gradually loosen and cause rotational imbalance, resulting in a risk of falling. It had

In addition, the long slats 113 are often installed by the purchaser, and the work is to secure them with screws while supporting them with one hand.
The problem was that the workability was extremely poor for inexperienced users.

The present invention solves the above-mentioned conventional problems, and includes
It is an object of the present invention to provide a ceiling fan in which the load concentration on a fixing screw 117 for fixing a fan plate 13 can be reduced, and the work of attaching a blade plate 113 can be easily performed.

Means for Solving the Problems To achieve this object, the ceiling fan of the present invention includes a disc-shaped stator fixed through a shaft in the center, and an annular stator provided close to the periphery of the stator. a rotor, a cap-shaped upper support frame and a lower support frame fixed above and below the rotor and rotatably supported on the shaft, and a plurality of openings provided on the circumferential side of the upper support frame. It has a plurality of blade plates arranged radially with one end inserted into the hole, and one end of the blade plate is sandwiched and fixed between the upper support frame and the rotor. ing.

Function: With this configuration, the vane plate can be inserted between the upper support frame and the rotor and temporarily held, and the surface that comes into contact with the fixed part of one vane plate in the vertical direction increases, so that This provides strong support for the load.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 3. That is, a pipe-shaped stator shaft 4 stands vertically in the center of the disc-shaped stator 3, and an annular rotor 6 is arranged close to the outer periphery of the stator 3. . Above and below this rotor 6, an upper support frame 1 and a lower support frame 2 are integrally fixed to a boss 6a of the rotor 6 with screws 6. Also,
A plurality of openings 17 are provided on the outer periphery of the upper support frame 1, and the lower edges of the openings 17 and the short bosses 6b of the rotor 5 are flush with each other. A gap 14 is formed between the lower surface of the upper support frame 1 and the short boss 5b of the rotor 6, and has a size approximately equal to the thickness of the blade plate 13 #1.

Bearing parts 1a and 2a are fitted into and fixed to the fixed shaft 4 on the upper and lower sides of the stator 3, and the upper support frame 1 and the lower support frame 2 are fitted into the bearing parts 1a and 2a at the center. Top support frame 1
, a lower support frame 2 and a rotor 6 are rotatably supported, forming an electric motor 10.

Then, screws 9 and 1 are provided on the outside of the upper support frame 1 and the lower support frame 2.
1, an upper outer sheath 7 and a lower outer sheath 8 are fixed. Further, one end 16 of the blade 13 is provided with a mounting hole 16, and the one end 15 is inserted into the gap 14 through the opening 17 of the upper support frame 1, and the short boss 6b of the rotor 6 is screwed with the screw 18. The vane plate 13 is attached to the electric motor 10 by being fixed to.

As described above, according to this embodiment, one end 15 of the blade plate 13
By inserting the blade into the opening 17 and the gap 14 of the upper support frame 1, the blade plate 13 can be temporarily fixed, making the assembly work easier, and both sides of one end 16 of the blade plate 13 are attached to the upper support frame. 1 and the upper end of the short boss 6b of the rotor 6 as well as the lower edge of the opening 17 of the upper support frame 1 and are fixed with screws, making the blade plate 13 strong against vertical loads. can be held. In this embodiment, a single blade plate is used, but the blade plate may be formed of two parts: a blade plate and a flange.

Effects of the Invention As described above, according to the present invention, one end of the blade plate is inserted into the opening provided on the outer periphery of the upper support frame and inserted into the gap formed between the lower surface of the upper support frame and the boss of the rotor. By fixing with screws, the installation work of the slats becomes easier, and
It is possible to realize an excellent ceiling fan that has the effect of being able to firmly support the blades because they are supported on both sides.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a ceiling fan according to an embodiment of the present invention, Fig. 2 is an enlarged view of the main part of the fan plate, Fig. 3 is an enlarged sectional view of the main part of the same support frame, and Fig. 4 is a conventional one. FIG. 6 is a cross-sectional view of the ceiling fan, and is an enlarged view of the main part of the fan. 1... Upper support frame, 2... Lower support frame, 3
...Stator, 4...Axis, 6...
・Rotor, 13... Vane plate, 17...
Open hole. Name of agent: Patent attorney Takashi Awano and 1 other person1-
--ΣShisae Azusa f3-Ichiba Katsura U anti

Claims (1)

[Claims] A disc-shaped stator is fixed through the shaft at the center, an annular rotor is provided close to the periphery of this stator, and a shaft is fixed above and below the rotor and is rotatably attached to the shaft. It has a cap-shaped upper support frame and a lower support frame that are supported, and a plurality of blade plates that are arranged radially with one end inserted into a plurality of openings provided on the circumferential side of the upper support frame. In the ceiling fan, one end of the blade plate is sandwiched and fixed between the upper support frame and the rotor.