Title:
スピーカ用振動板およびこれを用いたスピーカ
Document Type and Number:
Japanese Patent JP6861379
Kind Code:
B2
Abstract:
A loudspeaker diaphragm includes a cone having a curved surface from the outer to the inner periphery, and an annular edge of which inner peripheral part is bonded to the front side of the outer peripheral part of the cone. When seen from the front, the outer periphery of the cone is defined by smooth connection of three larger-diameter parts tangent to a first circle with a larger diameter, and three smaller-diameter parts each located between adjacent two of the three larger-diameter parts and tangent to a second circle with a smaller diameter. In the cone, a shape defined by connecting together points at the same position on the central axis is more circular as the points approach the inner periphery from the outer periphery. The inner periphery of the edge has a smaller radius than the second circle.
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Inventors:
Shuichi Konno
Ryo Kuribayashi
Kazutaka Kubo
Hiroyuki Amada
God Youhei
Hiroyuki Morimoto
Ryo Kuribayashi
Kazutaka Kubo
Hiroyuki Amada
God Youhei
Hiroyuki Morimoto
Application Number:
JP2016240806A
Publication Date:
April 21, 2021
Filing Date:
December 13, 2016
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H04R7/12; H04R7/14; H04R7/20
Domestic Patent References:
| JP57133194U | ||||
| JP57117889U | ||||
| JP11205895A | ||||
| JP2006148636A | ||||
| JP2008271025A | ||||
| JP49077930U | ||||
| JP59147393U |
Attorney, Agent or Firm:
Morimoto International Patent Office