Bass reflex port and tubular body
First Claim
1. A bass reflex port which has a tubular shape and through which air flows,wherein an angle of a first inner radial line with respect to a reference plane that includes a center axis of the bass reflex port differs from an angle of a second inner radial line with respect to the reference plane, the first inner radial line being orthogonal to the center axis and passing through a first characteristic point located on an inner circumference of the bass reflex port in a first transverse cross section perpendicular to the center axis, the second inner radial line being orthogonal to the center axis and passing through a second characteristic point corresponding to the first characteristic point and located on the inner circumference in a second transverse cross section perpendicular to the center axis, the first transverse cross section and the second transverse cross section differing from each other in position in a direction of extension of the center axis.
2 Assignments
0 Petitions
Accused Products
Abstract
A bass reflex port having a tubular shape for air flows, wherein an angle of a first inner radial line with respect to a reference plane including a center axis of the bass reflex port differs from an angle of a second inner radial line with respect to the reference plane, the first line being orthogonal to the center axis and passing a first characteristic point on an inner circumference of the bass reflex port in a first transverse cross section perpendicular to the center axis, the second line being orthogonal to the center axis and passing a second characteristic point corresponding to the first characteristic point and located on the inner circumference in a second transverse cross section perpendicular to the center axis, the first transverse cross section and the second transverse cross section differing form each other in position in a direction of extension of the center axis.
16 Citations
16 Claims
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1. A bass reflex port which has a tubular shape and through which air flows,
wherein an angle of a first inner radial line with respect to a reference plane that includes a center axis of the bass reflex port differs from an angle of a second inner radial line with respect to the reference plane, the first inner radial line being orthogonal to the center axis and passing through a first characteristic point located on an inner circumference of the bass reflex port in a first transverse cross section perpendicular to the center axis, the second inner radial line being orthogonal to the center axis and passing through a second characteristic point corresponding to the first characteristic point and located on the inner circumference in a second transverse cross section perpendicular to the center axis, the first transverse cross section and the second transverse cross section differing from each other in position in a direction of extension of the center axis.
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3. A bass reflex port which has a tubular shape and through which air flows, wherein a locus that connects characteristic points each located on an inner circumference of the bass reflex port in a corresponding one of a plurality of transverse cross sections is helical, the transverse cross sections being perpendicular to a center axis of the bass reflex port and differing from each other in position in a direction of extension of the center axis.
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8. A bass reflex port which has a tubular shape and through which air flows,
wherein a trough portion and a crest portion are repeatedly formed, along a circumferential direction of the bass reflex port, on an intersection line between an inner circumferential surface of the bass reflex port along a circumferential direction of the bass reflex port and a transverse cross section perpendicular to a center axis of the bass reflex port, a distance between the trough portion and the center axis in a direction perpendicular to the center axis being larger than a distance between the crest portion and the center axis in the direction perpendicular to the center axis.
Specification