Title:
FLOW PASSAGE OPEN/CLOSE DEVICE
Document Type and Number:
Japanese Patent JP3804648
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a flow passage open/close device provided at an air supply/exhaustion flow passage for ventilation and the like capable of securely preventing flow in a direction opposite to an exhaustion direction with a simple structure.
SOLUTION: The flow passage open/close device has a flow passage open/close wing 2 to be closed for an air flow in a direction from a flow entry 107 to a flow out-port 106, frame parts 1, 3 for rotatably holding the flow passage open/close wing, a rotation shaft 22, a first wing part 21 formed at a side for the rotation shaft and a second wing part 23 formed at a side opposite to the first wing part with the rotation shaft in between. At least one of the first wing part or the second wing part has a first engaging part 25. The frame part has a second engaging part 32 for restricting rotation of the flow passage open/close means in which the flow passage open/close means contacts with the first engaging part when the flow passage is closed.
Inventors:
Kiyo Tetsuo
Application Number:
JP2003306646A
Publication Date:
August 02, 2006
Filing Date:
August 29, 2003
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
F24F13/14; F16K15/03; F24F13/08; (IPC1-7): F24F13/14
Domestic Patent References:
| JP8219538A | ||||
| JP51138048A | ||||
| JP51143339U |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano
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