Ventilator
AssigneeNihon Plast Co., Ltd.
InventorsHidehiko Osada, Mitsuaki Fujita
Life of this patent
Estimating the term…
Abstract
A ventilator includes: a plurality of louvers arranged in parallel from one end to the other end of one direction at a supply opening formed in a case; shaft pins respectively formed on both ends at one ends of the louvers and inserted into a plurality of shaft holes; the operation pins being inserted into a plurality of operation holes formed along a longitudinal direction of a link with predetermined intervals; and a standard louver being opened and closed with the shaft pins serving as a center of opening and closing, wherein, gaps (A) between the operation holes on the link are set so as to be larger than gap (B) between a line connecting the shaft pins of the standard louver and the operation pin.
Claims11
A ventilator, comprising:
- a case formed with a supply opening, the case having walls opposite to each other formed respectively with a plurality of shaft holes arranged with predetermined intervals;
- an operating louver having two longitudinal margins opposite to each other and two ends opposite to each other, each one of the two ends of the operating louver provided with a shaft pin respectively being inserted into the shaft hole, one end of the two ends of the operating louver provided with an operating pin;
- a train louver having two longitudinal margins opposite to each other and two ends opposite to each other, each one of the two ends of the train louver provided with a shaft pin respectively being inserted into the shaft hole, one end of the two ends of the train louver provided with another operating pin;
- and
- a link formed with a plurality of operation holes receiving the operating pin of the operating louver and the operating pin of the train louver, the link transmitting motion of the operating louver to the train louver so that the operating louver and the train louver jointly shut the supply opening at swing limit of the operating louver in a manner such that the one margin of the operating louver and the one margin of the train louver meet each other, wherein
- a biasing device biasing the meeting state of the operating louver and the train louver so that clearance between the operating louver and the train louver is reduced at the swing limit of the operating louver.
Dependencies are inferred from the claim text.