Patent ID: 11963651
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Furniture, games (Other fields)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A noise reduction air duct device for an autonomous cleaning device, comprising:
an upper housing;
a lower housing; and
a support noise reduction structure,
wherein the autonomous cleaning device comprises a body and a motor mounted on the body, the noise reduction air duct device is configured to be mounted on the body; and
wherein the support noise reduction structure is made of an elastic material, the lower housing and the upper housing enclose to form an air duct, the air duct comprises an air inlet at a position corresponding to the motor, and the air duct comprises an air outlet at a side of the air duct away from the air inlet; and the support noise reduction structure comprises a first end fixed on the lower housing, and a second end abutting against a lower surface of the upper housing,
wherein along an airflow direction in the air duct, the air duct is divided into an upstream air duct and a downstream air duct;
a plurality of support noise reduction structures are mounted in the upstream air duct, the downstream air duct comprises an airflow buffer and an exhaust port, a first end of the airflow buffer is connected to the upstream air duct, a second end of the airflow buffer is connected to a first end of the exhaust port, and a second end of the exhaust port is located at a position of the air outlet; and
wherein three or more support noise reduction structures are provided, and a number of the support noise reduction structures close to the air inlet is greater than a number of the support noise reduction structures close to the downstream air duct.