Title:
Damper and speaker device
Document Type and Number:
Japanese Patent JP6329268
Kind Code:
B2
Abstract:
A damper and a speaker apparatus includes the damper, which suppresses damage to an oscillatory system from an excessive input signal, enabling an efficiency increase of the speaker apparatus. As a damper has a planar surface, undue deformation of the oscillatory system due to an excessive input signal is suppressed, and damage to the oscillatory system can be suppressed. Furthermore, since the deformation of a corrugation portion by a normal input signal is hardly prevented, a reduction in sound pressure of the speaker apparatus with respect to an input signal is suppressed, enabling an increase in efficiency. Furthermore, the planar surface is extended at a height in a thickness direction different from that of an attachment portion. Thus, rising portions are deformed when a voice coil bobbin is oscillated, enabling suppression of rupture of the damper in the vicinity of a boundary between the planar surface and the attachment portion.
Inventors:
Kimura Yoshihiro
Application Number:
JP2016543783A
Publication Date:
May 23, 2018
Filing Date:
August 22, 2014
Export Citation:
Assignee:
Pioneer Corporation
Tohoku Pioneer Co., Ltd.
Tohoku Pioneer Co., Ltd.
International Classes:
H04R9/02
Domestic Patent References:
| JP2003518856A | ||||
| JP62085096U |
Foreign References:
| US20080212822 | ||||
| US20030079936 |
Attorney, Agent or Firm:
Fumio Takino
Hideo Takino
Takao Kawasaki
Toshiaki Tsuda
Hideo Takino
Takao Kawasaki
Toshiaki Tsuda