US 12,270,408 B2
Ceiling fan
Sheng-Hsiang Huang, Taoyuan (TW); Chan-Yuan Tsao, Taoyuan (TW); Lung-Sheng Pan, Taoyuan (TW); and Yen-Lin Chen, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Sep. 23, 2023, as Appl. No. 18/372,082.
Claims priority of application No. 202310730377.1 (CN), filed on Jun. 20, 2023.
Prior Publication US 2024/0426309 A1, Dec. 26, 2024
Int. Cl. F04D 25/08 (2006.01); F04D 29/34 (2006.01)
CPC F04D 25/088 (2013.01) [F04D 29/34 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A ceiling fan, comprising:
an outer shield;
a middle ring pivotally connected to the outer shield and rotating relative to the outer shield;
a blade bracket is extended radially from the middle ring and having two guiding surfaces located on two opposite sides of the blade bracket; and
a fan blade combined with the middle ring by the blade bracket, and the fan blade has an opening at an end facing the blade bracket, wherein the fan blade further comprising:
a housing comprising a bottom plate and a top plate and having an accommodating space inside;
one or more supporting ribs protruding upward from the bottom plate of the housing in the accommodating space; and
two guiding limiting parts connected between the bottom plate and the top plate of the housing and disposed corresponding to the two guiding surfaces,
wherein the two guiding surfaces of the blade bracket are limited by the two guiding limiting parts, and the blade bracket is accommodated in the accommodating space and located between a top surface of the one or more supporting ribs and the top plate of the housing,
wherein at least one of the one or more supporting ribs is connected to the top plate of the housing at an end thereof away from the middle ring.