Air passage opening and closing device capable of preventing uncomfortable noise
US7090575B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 2, 2004 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Nov 2, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S454/906
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air passage opening and closing device for controlling an air flow for air-conditioning a vehicle compartment which is adapted to reduce an uncomfortable noise generated when the opening degree of a door such as an air-mixing door is small is provided, wherein a plurality of extending portions (7g) are provided on tips of the lip seal (7c). The extending dimension (H) of the extending portion (7g) is more than or equal to substantially 1 mm and less than or equal to substantially 3 mm, the dimension (B) in the width direction orthogonal to the extending direction in the extending portion (7g) is more than or equal to substantially 2 mm and less than or equal to substantially 14 mm, and the gap distance (G) between the adjacent extending portions (7g) is more than or equal to substantially 1 mm and less than or equal to substantially 4 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.