| 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 |
| 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.
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