US 9,808,138 B1
Rotary mop and a rotary structure of its mop handle
Zhengwei Cao, Zhe Jiang Province (CN)
Assigned to Zhejiang DiMei Intelligent Technology Co., Ltd, ZheJiang Province (CN)
Filed by Zhejiang DiMei Intelligent Technology Co.,Ltd, ZheJiang Province (CN)
Filed on Dec. 15, 2016, as Appl. No. 15/380,564.
Claims priority of application No. 2016 2 0447780 U (CN), filed on May 17, 2016.
Int. Cl. A47L 13/20 (2006.01); B25G 3/38 (2006.01)
CPC A47L 13/20 (2013.01) [B25G 3/38 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A rotary structure of a mop handle, comprising:
a rotary cylinder having an inner wall with spiral grooves;
a lifting rod located inside the rotary cylinder;
a unidirectional rotary one-way bearing that is comprised of a single unitary piece; and
a plurality of bulges;
wherein the lower end of the lifting rod is fixedly coupled with the unidirectional rotary one-way bearing;
wherein the plurality of bulges are arranged outside the unidirectional rotary one-way bearing;
wherein when the lifting rod is pressed downwards, the unidirectional rotary one-way bearing stops rotation, and the bulges and the spiral grooves are mutually matched to drive the rotary cylinder to rotate; and
wherein when the lifting rod is pulled upwards, the unidirectional rotary one-way bearing idly rotates along the spiral grooves.