Hidden fan

Abstract

The invention provides a hidden fan. The hidden fan comprises a drive motor, a fixed shaft and an outer rotor. The hidden fan further comprises a rotary disc and a fan blade assembly. The fan blade assembly comprises fan blades and a fan blade gear. The fan blade gear is fixedly connected with the fan blades rotating along with rotation of the fan blade gear. The fan blades are unfolded or foldedrelative to the rotary disc. A position blocking mechanism is arranged between a drive gear and the rotary disc, and by means of the position blocking mechanism, when the drive gear rotates along withrotation of the outer rotor, the rotary disc and the drive gear are firstly staggered by a certain angle relatively and then synchronously rotate, and thus the fan blades are unfolded relative to therotary disc and then fixed relative to the rotary disc. A reset spring is further arranged between the drive gear and the rotary disc, and by means of the reset spring, when the drive gear stops rotating, the rotary disc is pulled to rotate relative to the drive gear to be reset, and thus the fan blades are folded relative to the rotary disc. The design structure is simple and compact, assembly is easy, space occupation can be reduced through folding of the fan blades, and the hidden fan looks attractive.

Description

【Technical field】 [0001] The invention relates to a stealth fan, in particular to a stealth fan which can automatically and rapidly deploy and retract fan blades. 【Background technique】 [0002] In daily life, many people use ceiling fans to cool down, especially in summer, when there is a ceiling fan hanging on the roof, it can maximize the distribution of cool wind, so that the indoor temperature can be cooled in a large area, and people's indoor stuffiness can be solved. ; But its disadvantage is that the fan blade takes up a lot of space, and it is not beautiful, and it is no longer possible to assemble a chandelier on the roof. [0003] The publication number is: CN101258366A discloses a combined ceiling fan and lamp with foldable fan blades, which includes a blade support device, a planetary gear, a sun gear, an electric motor and fan blades; the electric motor and the sun gear is coaxially mounted to said blade support means, the root of the blade is pivotable betwee...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the invention provides a new type of invisible fan. The invention utilizes the motor to drive the gear to rotate to make the fan blades open actively, which can solve the problem that the fan blades cannot be opened due to insufficient centrifugal force when the motor rotates slowly. The problem

[0006] The invention utilizes the motor to drive the drive gear to rotate so that the fan blades are actively and quickly opened and closed by the return spring, which can combine the fan with the chandelier and solve the problems of space and aesthetics

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