JP2022057066A - Ceiling fan - Google Patents

Abstract

To improve maintenance performance, related to a ceiling fan whose blades can be attached and detached by a user without using a tool.SOLUTION: A ceiling fan comprises a motor part 7, a support part 10 which rotates by the motor part 7, and a blade part 5 arranged at the support part 10. The blade part 5 has blade portions 11 for substantially blowing air, and circular ring-shaped circular ring portions 12 for connecting a plurality of the blade portions 11. The circular ring portions 12 are fit to the support part 10 so that center axes of the circular ring portions 12 are located above a rotating shaft of the support part 10 at the circular ring portions 12 and the support part 10, and the ceiling fan has a rotation attachment mechanism in which the circular ring portions 12 are attached to the support part 10 by rotating the circular ring portions 12 with the center axes of the circular ring portions 12 as rotation centers, thus improving maintenance performance.SELECTED DRAWING: Figure 4

Description

The present invention relates to a ceiling fan suspended from the ceiling.

In a conventional ceiling fan, a motor portion that can be attached to the ceiling, a support portion that is rotated by the motor portion, a blade plate provided on the support portion, and a blade plate having a root portion that is fixed to the support portion are provided with screws. The blade plate was engaged with the support portion by a fixing member such as.

Japanese Unexamined Patent Publication No. 2013-194722

In such a conventional ceiling fan, the blade plate is attached to the support part and then the motor part is attached to the ceiling. Therefore, once the ceiling fan is attached to the ceiling, it becomes difficult to remove the blade plate, and it is easier to maintain. Is required to increase.

The present invention solves the above-mentioned problems, and an object thereof is that even if a ceiling fan is once attached to the ceiling, the blade plate can be attached / detached without a tool without removing the ceiling fan from the ceiling.

Then, in order to achieve this object, the present invention includes a motor portion, a support portion rotated by the motor portion, and a blade portion provided on the support portion, and the blade portion substantially sucks air. It has a wing portion that blows air and an annular portion that connects a plurality of the wing portions, and the central axis of the annular portion is the support portion of the annular portion and the support portion. When the annular portion is fitted to the support portion so as to be located on the rotation axis and the annular portion is rotated with the central axis of the annular portion as the center of rotation, the annular portion is attached to the support portion. It is characterized by having a rotary mounting mechanism, which achieves the intended purpose.

According to the present invention, a motor portion that can be mounted on the ceiling, a support portion that is rotated by the motor portion, and a blade portion provided on the support portion are provided, and the blade portion substantially blows air. It has a wing portion and an annular portion having an annular shape connecting a plurality of the wing portions, and the central axis of the annular portion is the rotation axis of the support portion in the annular portion and the support portion. When the annular portion is fitted to the support portion so as to be located above and the annular portion is rotated around the central axis of the annular portion, the annular portion is mounted on the support portion. It is characterized by having a mounting mechanism. With the above configuration, the user can attach / detach the blade plate without using a tool.

Side view of the ceiling fan according to the first embodiment of the present invention Partial enlarged view of the same ceiling fan Perspective view of the blades of the same ceiling fan Partial enlarged view showing the engagement process between the blade and support of the ceiling fan Sectional drawing of the blade part and support part of the ceiling fan of Embodiment 2 of this invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a side view of the ceiling fan 1 according to the first embodiment of the present invention, and FIG. 2 shows a partially enlarged view of the ceiling fan 1. FIG. 2 shows a state in which the upper motor cover 3 is removed.

As shown in FIGS. 1 and 2, the ceiling fan 1 includes a connecting portion 2, a blade portion 5, a motor portion 7, and a support portion 10. The ceiling fan 1 is supported via a connecting portion 2 fixed to the ceiling 19. The motor portion 7 is supported by the connecting portion 2. The motor portion 7 includes a circular stator 8 fixed to the lower portion of the connecting portion 2 and an annular rotor 9 that rotates around the stator 8. When the motor unit 7 is energized, the rotor 9 rotates around the stator 8. A support portion 10 having a cylindrical shape with a central axis extending in the vertical direction is fixed to the peripheral edge of the rotor 9, and the support portion 10 rotates integrally with the rotor 9. The lower motor cover 4 is attached so as to cover the lower part of the motor portion 7. The substrate case 6 is fixed above the motor portion 7 which is the central portion of the connecting portion 2. The upper motor cover 3 is attached so as to cover the board case 6.

FIG. 3 is a perspective view of the blades of the ceiling fan, and FIG. 4 is a partially enlarged view showing the engagement process between the blade portion and the support portion of the ceiling fan.

As shown in FIGS. 3 and 4, the blade portion 5 includes a plurality of blade portions 11 and one annular portion 12.

The annular portion 12 has a cylindrical shape with a central axis extending in the vertical direction, is one size larger than the support portion 10, and has a size such that the outer surface of the support portion 10 fits into the inner surface of the annular portion 12.

The wing portion 11 has a substantially oblong plate shape, and is radially connected to the outer surface of the annular portion 12 about the central axis of the annular portion 12. In the present embodiment, the five blade portions 11 are fixed at equal intervals so as to extend radially outward from the outer surface of the annular portion 12.

In the annular portion 12 and the support portion 10, the annular portion 12 is fitted to the support portion 10 so that the central axis of the annular portion 12 is located on the rotation axis of the support portion 10, and the central axis of the annular portion 12 is fitted. When the annulus portion 12 is rotated around the center of rotation, the annulus portion 12 has a rotation mounting mechanism 20 that is attached to the support portion 10.

When the wing portion 11 is damaged or needs to be cleaned due to the accumulation of dust, the plurality of wing portions 11 are all connected through the annular portion 12, so that the user has one blade portion 5. It only needs to be attached to the support portion 10. That is, when it is necessary to attach / detach the blade portion 5, it can be attached / detached without a tool.

Specifically, the rotary mounting mechanism 20 has a plurality of notches 13 provided in the annular portion 12 and a plurality of hook portions 16 engaged with the notches 13 provided in the support portion 10. When the user passes the notch portion 13 provided in the annular portion 12 through the hook portion 16 provided in the support portion 10 and rotates the annular portion 12, the blade portion 5 is attached to the support portion 10. Can be done.

The notch portion 13 includes an upper and lower notch portion 14 and a left and right notch portion 15. The upper and lower cutout portions 14 are grooves extending downward from the upper end of the annular portion 12. The left-right notched portion 15 is a groove extending laterally from the lower portion of the upper and lower notched portions 14.

The hook portion 16 has a rod shape and extends radially outward from the side surface (outer surface) of the cylindrical support portion 10. The hook portion 16 has a horizontal hook 16a extending in the horizontal direction from the support portion 10 and a tip hook 16b extending upward from the tip of the horizontal hook 16a.

In the above configuration, the user passes the hook portion 16 provided on the support portion 10 through the upper and lower cutout portions 14 of the cutout portion 13 provided on the annular portion 12, and then cuts the hook portion 16 left and right. When the annular portion 12 is rotated so as to enter the notched portion 15, the blade portion 5 can be rotationally mounted on the support portion 10. The annular portion 12 is fitted between the support portion 10 and the tip hook 16b, and the horizontal hook 16a of the support portion 10 is hooked on the left and right notched portions 15 of the annular portion 12.

The operation of the ceiling fan 1 of the first embodiment having such a configuration will be described. In the ceiling fan 1, when the motor unit 7 is energized, the rotor 9 rotates. By this rotation, the blade portion 5 fixed to the support portion 10 together with the support portion 10 rotates around the center of the rotor 9. In the blade portion 5, since the blade portion 11 is inclined diagonally downward from the front side in the rotation direction toward the rear side, the air flowing along the lower surface of the blade portion 11 flows from the ceiling 19 side toward the floor (downward). Is blown to. Each blade portion 5 is rotationally driven at a rotation speed of, for example, about 200 to 300 rotations / minute.

Further, the left and right notch portions 15 have a configuration extending from the upper and lower notch portions 14 in the rotational direction of the support portion 10. As a result, when the support portion 10 rotates, the hook portion 16 easily moves to the tip end side (rotational direction side of the support portion 10) of the left and right notch portions 15. That is, when the support portion 10 rotates, the hook portion 16 is less likely to move to the root side (upper and lower notch portions 14 side) of the left and right notch portions 15, so that the hook portion 16 is less likely to come off from the notch portion 13.

(Embodiment 2)
FIG. 5 is a cross-sectional view of a blade portion and a support portion of the ceiling fan according to the second embodiment of the present invention. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The difference from the first embodiment is the rotary mounting mechanism.

The rotary mounting mechanism has a first thread 17 provided on the inner surface of the annular portion 12 and a second thread 18 provided on the outer surface of the support portion 10. By engaging the first thread 17 and the second thread 18, the annular portion 12 is attached to the support portion 10.

Further, the structure may be such that the first thread 17 and the second thread 18 are engaged in a direction opposite to the rotation direction of the blade portion 5. By rotating the annular portion 12 in the direction opposite to the rotation direction of the support portion 10, the annular portion 12 is attached to the support portion 10. In this way, when the rotation mounting direction is opposite to the rotation direction of the blade portion 5, a force acts in the direction in which the screw is tightened by the reverse torque of the rotating annular portion 12, so that the blade portion 5 is supported by the support portion 10 more firmly. Can be fixed to.

The present invention is useful as a ceiling fan for homes and offices.

1 Ceiling fan 2 Connecting part 3 Upper motor cover 4 Lower motor cover 5 Blade part 6 Board case 7 Motor part 8 Stator 9 Rotor 10 Support part 11 Wing part 12 Circular part 13 Notch part 14 Top and bottom notch part 15 Left and right Notch 16 Hook 16a Horizontal hook 16b Tip hook 17 1st thread 18 2nd thread 19 Ceiling

Claims (5)

With the motor part
A support portion rotated by the motor portion and a support portion
A blade portion provided on the support portion is provided.
The blade portion is
The wing part that blows air substantially,
It has an annulus-shaped annular portion that connects a plurality of the wing portions, and has.
The annulus portion and the support portion have
When the annular portion is fitted to the support portion so that the central axis of the annular portion is located on the rotation axis of the support portion, and the annular portion is rotated around the central axis of the annular portion as the rotation center. , A ceiling fan having a rotary mounting mechanism in which the annular portion is mounted on the support portion. The rotary mounting mechanism is
A plurality of notches provided in the annulus portion and
The ceiling fan according to claim 1, further comprising a plurality of hook portions that engage with the notch portion provided in the support portion. The notch portion includes an upper and lower notch portion extending downward from the upper end of the annulus portion.
It has left and right notches extending laterally from the lower part of the upper and lower notches.
The ceiling fan according to claim 2, wherein the left and right cutout portions extend from the upper and lower cutout portions in the rotational direction of the support portion. The rotary mounting mechanism is
The first screw thread provided on the inner surface of the annulus portion and
It has a second thread provided on the outer surface of the support portion, and has.
The ceiling fan according to claim 1, wherein the annular portion is attached to the support portion by engaging the first screw thread with the second screw thread. The fourth aspect of the present invention, wherein the rotary mounting mechanism mounts the annular portion on the support portion by rotating the annular portion in a direction opposite to the rotation direction of the support portion. Ceiling fan.

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