US 11,849,909 B2
Automatic cleaning apparatus
Yongcheng Zuo, Beijing (CN); Cheng Tang, Beijing (CN); Fei Duan, Beijing (CN); Liang Zhong, Beijing (CN); Shan Gao, Beijing (CN); and Tiantian Zhang, Beijing (CN)
Assigned to BEIJING SHUNZAO TECHNOLOGY CO., LTD., Beijing (CN); and BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed by Beijing Shunzao Technology Co., Ltd., Beijing (CN); and BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Filed on Feb. 25, 2022, as Appl. No. 17/681,118.
Claims priority of application No. 202110767653.2 (CN), filed on Jul. 7, 2021.
Prior Publication US 2023/0010167 A1, Jan. 12, 2023
Int. Cl. A47L 9/28 (2006.01); A47L 11/40 (2006.01)
CPC A47L 9/2836 (2013.01) [A47L 11/4011 (2013.01); A47L 2201/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An automatic cleaning apparatus, comprising:
a chassis;
a front housing arranged at a front end of the chassis; and
a sensing device that senses movement of the front housing and sends a signal to a control mainboard of the automatic cleaning apparatus when the front housing touches an obstacle and moves relative to the chassis,
wherein:
the sensing device comprises a dust blocking member and a rocker arm, the rocker arm triggers the sensing device to send the signal;
a first end of the rocker arm is rotatably arranged inside the sensing device, and a second end of the rocker arm passes through the dust blocking member and extends out of the sensing device; and
a front housing reset device is arranged on the chassis and capable of biasing the front housing toward an initial position of the front housing,
wherein the dust blocking member further comprises an elastic part coupled to the rocker arm and capable of biasing the rocker arm toward an initial position of the rocker arm,
the elastic part comprises a plurality of elastic rings with gradually increasing diameters, and the plurality of elastic rings are sequentially fitted over one another along a radial direction of the elastic rings; and
the elastic rings are flush with each other along an axial direction of the elastic rings.