Inside/outside air switching device with rotary door
First Claim
1. An inside/outside air switching device comprising:
- a case defining an air passage through which air flows, the case having a first port from which inside air inside a compartment is introduced, and a second port from which outside air outside the compartment is introduced; and
a rotary door disposed in the case, for selectively opening and closing the first port and the second port, wherein;
the rotary door includes a rotation shaft disposed rotatably, a circumference wall provided at an upper side of the rotation shaft to extend in a rotation direction, both fan-like side plates connecting the circumference wall and the rotation shaft at both sides in an axial direction of the rotation shaft, a protrusion wall provided along an entire periphery of the circumference wall and the side plates to protrude toward an outside of the rotary door, and a packing member made of an elastic member, and provided at both surface sides of the protrusion wall;
the case has seal surfaces provided around both the first and second ports to contact the packing member;
at least one of both the first and second ports has a circumference opening provided to opposite to the circumference wall; and
the rotary door is disposed in the case to form a clearance between the protrusion wall around a lower side of the rotation shaft and the seal surface, the clearance having a size equal to or larger than a predetermined dimension.
1 Assignment
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Accused Products
Abstract
In an inside/outside air switching device, a rotary door includes a circumference wall provided at an upper side of a rotation shaft to extend in a rotation direction, both fan-like side plates connecting the circumference wall and the rotation shaft at both sides in an axial direction of the rotation shaft, a protrusion wall provided along an entire periphery of the circumference wall and the side plates to protrude to an outside of the rotary door, and a packing member provided at both surface sides of the protrusion wall. A clearance equal to or larger than a predetermined dimension is provided between the protrusion wall around a lower side of the rotation shaft and a seal surface of an inside/outside air switching box, for preventing a water storage.
6 Citations
7 Claims
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1. An inside/outside air switching device comprising:
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a case defining an air passage through which air flows, the case having a first port from which inside air inside a compartment is introduced, and a second port from which outside air outside the compartment is introduced; and
a rotary door disposed in the case, for selectively opening and closing the first port and the second port, wherein;
the rotary door includes a rotation shaft disposed rotatably, a circumference wall provided at an upper side of the rotation shaft to extend in a rotation direction, both fan-like side plates connecting the circumference wall and the rotation shaft at both sides in an axial direction of the rotation shaft, a protrusion wall provided along an entire periphery of the circumference wall and the side plates to protrude toward an outside of the rotary door, and a packing member made of an elastic member, and provided at both surface sides of the protrusion wall;
the case has seal surfaces provided around both the first and second ports to contact the packing member;
at least one of both the first and second ports has a circumference opening provided to opposite to the circumference wall; and
the rotary door is disposed in the case to form a clearance between the protrusion wall around a lower side of the rotation shaft and the seal surface, the clearance having a size equal to or larger than a predetermined dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification