JPS61108894A - Supporting device of electric motor for wobbling ceiling fan - Google Patents

Abstract

PURPOSE:To reduce the material cost of a fixed frame and its processing expense, by forming the fixed frame of a stator of an electric motor with a metallic plate and providing a mounting plate crossing across both outer sides in a squared shape with one end open while forming a cylindrical bearing by extruding in the mounting plate. CONSTITUTION:A rotor 11 of an electric motor and its stator 1, being enveloped by a fixed frame 2 formed in a cap shape by pressing an iron plate, are fixed by arranging a mounting plate 4 crossing across an end surface of the fixed frame 2 and having in the periphery a pair of parallelly rising parts. The mounting plate 4, forming a cylindrical bearing 5 by burring work corresponding to a threaded hole 10 in a supporting frame 8, pivotally mounts the supporting frame 8. Consequently, a supporting device, forming a cylindrical bearing part in separate parts, enables a quality of the fixed frame and its material to be leveled down to the minimum required limit.

Description

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

Conventional structure and its problems In general tabletop fans, the motor stator fixing frame has traditionally been a cast product using materials such as aluminum and zinc, but in recent years it has been changed due to demands for resource saving and rationalization. Along with this, the material and processing costs were significantly reduced by changing to ones made of 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 a bearing fitting part for the support shaft is required in the motor stator fixing frame. Therefore, due to its structure, it is difficult to use a steel plate for the stator fixing frame. and has not been realized so far.

FIGS. 3 to 6 show a conventional electric motor support device for a ceiling swirl fan. This ceiling swirl fan has 1 stator
01 is housed in a fixed frame 102, an outer shell 103 is fitted thereto, the fixed frame 102 is placed in a support frame 104, and a support having a spherical part 109 at the tip with respect to the support frame 104 and a threaded part is provided. It is rotatably supported by a screw 106. In addition, 106 in the figure is a nut for locking the support screw 106, and 107 is a nut for fixing the support screw 105 to the support frame 1.
04 is a screw hole provided in the support frame 104. The fixed frame 102 is provided with a pair of synthetic resin bearings 110 for rotatably receiving the support screw 106. In order to fit the bearings 110, the fixed frame 10
2 is provided with a bearing fitting portion 108. In the figure, 111 is a rotor, 112 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 or aluminum. A soft non-ferrous alloy such as zinc is not durable and requires a bearing 110 made of synthetic resin, for example, 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 pressing of thin steel sheets could not be used.

OBJECTS OF THE INVENTION It is an object of the present invention to make the motor stator fixing frame of the conventional ceiling swirl fan made of iron 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 present invention forms a fixing frame made of a metal plate, which surrounds main components such as a stator and a rotor of an electric motor, and fixes the stator inside. A U-shaped mounting plate is provided on both outsides of the 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. , The fixed frame can be metallized, reducing the material cost of the fixed frame.

Processing costs can be significantly reduced.

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, 11 is a rotor of the electric motor, and 12 is a rotating shaft, which constitute the main part of the electric motor. 2 is a fixed frame, 3 is a rear fixed frame, and 4 is a mounting plate.

The fixing frame 2 and the rear fixing frame 3 are formed into a cap shape by pressing a steel plate, and the seven flanges of the opening are joined and integrated by screws 6, and the main part of the electric motor including the stator 1 is housed inside. Fits in and envelops. A mounting plate 4 having a pair of rising portions extending over the end face of the fixed frame 2 and parallel to the outer periphery is fixed to the fixed frame 2 with screws 7. There is a support frame 8 surrounding these motor components, and this support frame 8 is provided with screw holes 10 facing each other.

Cylindrical bearings 6 and 5 having a certain height are formed by burring on the mounting plate 4 in correspondence with the screw holes 10 of the support frame 8, and the support frame 8 is pivotally mounted by support screws 9. There is.

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 press machining slide direction of the cap-shaped fixed frame 2, is provided on the mounting plate 4, which is a separate component, and this mounting &4 is carried out on the fixed frame 2.
Since it is fixed to the end face of the cap with screws 7, the fixing frame requires only the minimum necessary material and wall thickness to form a cap shape with good strength and workability, and the mounting plate 4, which is a separate part, can be easily installed using screws. Can be assembled.

Effects of the Invention As is clear from the invention in the above-mentioned 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 processing, but since this part is made as a separate part. The materials used for the fixed frame can be reduced to the minimum necessary, and the fixed frame can be easily constructed from a metal plate, reducing the material and processing costs for the fixed frame as a support device for the electric motor of this type of ceiling swirl fan. It has the effect of being able to significantly reduce costs.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a ceiling rotating fan according to an embodiment of the present invention, FIG. 2 is a sectional view of a main part of the electric motor, FIG. 5 is an exploded perspective view of the same, and FIG. 5 is a sectional view of the electric motor. 2... Fixed frame, 4... Mounting plate, 5...
...Bearing, 8...Support frame, 9...
Support screw.

Claims (1)

[Claims] Encloses the main components such as the stator and rotor of the electric motor,
In addition, a fixing frame for fixing the stator inside is formed of a metal plate, and a U-shaped mounting plate is provided on both sides of the fixing frame, and a cylindrical bearing is extruded and supported on the mounting plate. A motor support device for a ceiling whirling fan, in which a frame is pivotally connected to a fixed frame by a shaft fitted into the bearing.