Waste exhaust ventilation door automatic control device and vehicle body having the same

US11383740B2 · kind B2 · utility

Assignee

• CRRC QINGDAO SIFANG CO., LTD. · CN

Inventors

• Shuanbao Yao · Shandong, CN
• Dawei Chen · Middletown, US
• Conghui Zhang · Shandong, CN
• Peng Lin · Shandong, CN
• Xin Jiang · Longbeilingcun, CN
• Yunfeng Li · Beijing, CN
• Shaoqing Liu · Beijing, CN
• Sansan Ding · Qingdao, CN

Key dates

• Filing date: May 4, 2018
• Grant date: Jul 12, 2022
• Expiry date: Nov 20, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T30/00
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A waste exhaust ventilation door automatic control device comprises a core body (8), an inner door body (2) and an outer door body (1); wherein the core body is fixed on a ventilation opening of the waste exhaust ventilation door, a top of the outer door body is movably hinged on an outer side of the core body, and a bottom of the inner door body is movably hinged on an inner side of the core body; when there is no pressure fluctuation outside the core body, the outer door body and inner door body will open, and when there is pressure fluctuation outside the core body, the outer door body and/or the inner door body will be closed automatically due to a pressure difference between inside and outside the core body. A vehicle body comprising the waste exhaust ventilation door automatic control device is also provided.