| 摘要 |
A ceiling fan includes a motor which rotates a plurality of blades, a shaft projecting from the motor, a pipe connected to an upper end of the shaft and which hangs from a ceiling surface, and a connecting rod for connecting the pipe and the shaft with each other via through holes formed in the pipe and the shaft, respectively. The ceiling fan also includes a displacement-correspondence tool which is displaced or which detects a displacement amount in correspondence with a relative positional displacement amount between the shaft and the pipe, and a power source control tool which controls energization to the motor in accordance with the displacement of the displacement-correspondence tool or the detected displacement amount. |
| 主权项 |
1. A ceiling fan, comprising:
a connecting clamp configured to be fixed to a ceiling; and a ceiling fan body hanging from the connecting clamp through a hanging device, wherein the hanging device includes a first connecting portion which is mounted on the connecting clamp, and a second connecting portion provided on a lower portion of the first connecting portion, the ceiling fan body includes a motor which rotates a plurality of fan blades provided in a horizontal direction perpendicular to an axis of rotation of the motor, a shaft projecting from an upper portion of the motor, and a joint portion fixed to an upper portion of the shaft, the joint portion is movably mounted on the second connecting portion, and the ceiling fan further includes an abnormal-rotation detector which detects a rotation of the ceiling fan body and stops the motor when a body rotation-preventing device provided on the joint portion and one of the first connecting portion and the second connecting portion is released, wherein the abnormal-rotation detector includes a first rotation detecting tool and a second rotation detecting tool, the first rotation detecting tool is fixed to the second connecting portion, the second rotation detecting tool is fixed to the ceiling fan body, the first rotation detecting tool and the second rotation detecting tool are connected to each other such that when they are separated from each other by a predetermined distance when the ceiling fan body rotates, a supply of power to the motor is stopped, wherein the second rotation detecting tool is a push-on switch and the push-on switch comes into contact with the first rotation detecting tool, whereby the push-on switch is energized, and wherein the ceiling fan further includes a curved plate-like detecting portion having a predetermined width provided on a lower portion of the first rotation detecting tool, wherein the push-on switch is fixed to a side surface of the joint portion at a position opposed to the detecting portion, and the push-on switch is energized when the push-on switch is in contact with the detecting portion. |
