JPS649477B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a motor support device for a ceiling swirl fan.

Conventional structure and its problems In general tabletop electric fans, the motor stator fixing frame has traditionally been a cast product using aluminum, zinc, etc., but in recent years, in line with demands for resource conservation and rationalization, The material and processing costs were significantly reduced by switching to iron plates.
This can be realized due to the structure in which the horizontal rotating shaft is directly fixed to the rotor fixing frame, that is, there is no movable support part.

However, in a ceiling swing fan, the motor's support shaft is movable due to its function, and the motor stator fixing frame requires a bearing fitting part for the support shaft, so due to its structure, it is difficult to use a steel plate for the stator fixing frame. This has not been realized until now.

3 to 5 show a conventional electric motor support device for a ceiling swirl fan. This ceiling rotating fan has a stator 101 housed in a fixed frame 102, an outer shell 103 fitted thereto, and
is placed in the support frame 104 and the support frame 10
4, it has a spherical part 109 at its tip and is rotatably supported by a support screw 105 having a threaded part. In the figure, 106 is a nut for locking the support screw 105, and 107 is a screw hole provided in the support frame 104 for locking the support screw 105 to the support frame 104. A pair of synthetic resin bearings 110 is provided on the fixed frame 102 to rotatably receive the support screw 105.
The bearing fitting part 1 is inserted into the fixed frame 102 in order to fit the bearing into the fixed frame 102.
08 is provided. 111 in the figure is a rotor, 11
2 is a rotating shaft, 113 is a blade attached to the tip of the rotating shaft 112, 114 is a protective net that protects the blade 113, and 115 is a main body stand that supports the support frame 104.

The support device configured as described above supports a heavy electric motor made of iron and copper, and since the support part constantly rotates during operation, the journal requires a certain length and the bearing is made of aluminum. Soft non-ferrous alloys such as iron and zinc are not durable and require a bearing 110 made of, for example, synthetic resin, and in any case, the stator support frame 102 is formed with a bearing insertion part 108 which is a recess for inserting these. Therefore, a considerable wall thickness was required, and it was not possible to use press-formed thin steel sheets.

OBJECTS OF THE INVENTION It is an object of the present invention to make the electric motor stator fixing frame of the above-mentioned conventional ceiling swirl fan a steel plate, thereby reducing the material cost and processing cost of the fixing frame.

Structure of the Invention In order to achieve the above object, the ceiling swirl fan of the present invention includes a stator of an electric motor and a fixing frame that surrounds main components such as the stator and fixes the stator therein, using a metal plate. In addition, a pair of mounting plates are provided on both outer sides of the fixed frame, a cylindrical bearing is extruded onto the mounting plate, and the support frame is pivotally connected to the fixed frame by a shaft fitted into the bearing. This makes it possible to use a metal plate for the fixed frame, significantly reducing material and processing costs for the fixed frame.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, 1 is a stator of the electric motor, 13 is a rotor of the electric motor, and 14 is a rotating shaft, which constitute the main part of the electric motor. 2 is a fixed frame, 7 is a rear fixed frame, and 4 is a mounting plate. The fixing frame 2 and the rear fixing frame 7 are formed into a cap shape by pressing an iron plate, and the opening flanges are joined and integrated with screws 8, and the main part of the electric motor including the stator 1 is housed inside. Inset, and
It's enveloping. A pair of holes 3 are provided on the end surface of the fixed frame 2, into which a hook portion 6 at one end of the mounting plate 4 is hooked, and a tongue portion 9 at the other end.
The fixing frame 2 and the rear fixing frame 3 are fixed together at the same time with screws 8. There is a support frame 10 surrounding these motor components, and this support frame 10 is provided with screw holes 12 facing each other.
Cylindrical bearings 5, 5 having a certain height are formed by burring on the mounting plate 4 in correspondence with the screw holes 12 of the support frame 10, and the support frame 10 is pivotally mounted by support screws 11. ing.

Note that these components are assembled to the main body stand in the same manner as shown in FIG. 3 above, and detailed explanation thereof will be omitted.

In this way, the bearing 5, which must be installed in the direction perpendicular to the pressing slide direction of the cap-shaped fixed frame 2, is provided on the mounting plate 4, which is a separate part, and this mounting plate 4
For installation, one end is hooked into the hole 3 provided in the fixed frame 2, and the other end is tightened together with the screw that connects the fixed frame 2 and the rear fixed frame 3. Therefore, the fixed frame 2 has excellent strength and workability. The minimum required material and wall thickness for a good cap shape are sufficient, and the installation of the mounting plate 4, which is a separate part, can be assembled without the need for extra mounting tools.

In the above embodiment, an example was shown in which the hook part 6 of the mounting plate 4 is hooked into the hole 3 provided in the fixed frame 2, but this may also be screwed in the same way as the other end. It is sufficient if one of the two can be fixed to the fixed frame 2.

Furthermore, in the above embodiment, the other end of the mounting plate 4 is fastened to the fixing frame 2 and the rear fixing frame 7 using the screws 8, but the fixing frame 2 and the rear fixing frame 7 are not tightened together. Another part such as a flange may be locked to the locking part of the flange, and the other end of the mounting plate 4 may be locked to the locking part of the fixing frame 2 and the rear fixing frame 7. It would be good if it could be fixed.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, the bearing that pivotally connects the support frame in the fixed frame needs to be formed into a cylindrical shape by so-called burring process, but this part is not made as a separate part. Therefore, the materials and materials for the fixed frame can be reduced to the minimum required, and therefore, the fixed frame can be easily constructed from a metal plate, and the material cost of the fixed frame can be reduced as a support device for the electric motor of this type of ceiling swirl fan. This has the effect of significantly reducing processing costs.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a ceiling swirl fan according to an embodiment of the present invention, and FIG. 2 is a sectional view of the main parts of the electric motor.
FIG. 3 is a side view of a conventional ceiling swirl fan, FIG. 4 is an exploded perspective view of the same, and FIG. 5 is a sectional view of the electric motor section. 2... Fixed frame, 3... Hole, 4... Mounting plate, 5...
... bearing, 10 ... support frame, 11 ... support screw.

Claims (1)

[Claims] 1. A fixing frame that surrounds the main components such as the stator and rotor of the electric motor and fixes the stator inside is formed of a metal plate, and a pair of mounting plates are provided on both outsides of the fixing frame, A motor support device for a ceiling rotating fan, in which a cylindrical bearing is extruded on the mounting plate, and a support frame is pivotally connected to a fixed frame by a shaft fitted into the bearing.