Title:
スピーカ、振動板構造及びスピーカユニット
Document Type and Number:
Japanese Patent JP4675895
Kind Code:
B2
Abstract:
A shallow loudspeaker provided with a chassis (2), a movable body (4), a resilient suspension for guiding the movable body with respect to the chassis along a translation axis (T), and an electric actuator (6) for driving the movable body along the translation axis. The movable body has a diaphragm structure comprising a central domeshaped diaphragm (8) and a cone-shaped diaphragm (10) concentrically arranged with respect to the dome-shaped diaphragm. The cone-shaped diaphragm has a back portion (10b) and a front portion (10f) which is wider than the back portion. Both diaphragms are attached to each other near the back portion of the cone-shaped diaphragm, the cone-shaped diaphragm enveloping the dome-shaped diaphragm. The resilient suspension comprises a first resilient element (12a) connecting the diaphragm structure to the chassis near the back portion of the cone-shaped diaphragm, and a second resilient element (12b) connecting the diaphragm structure to the chassis near the front portion of the cone-shaped diaphragm.
Inventors:
Baeten Joseph Af
Application Number:
JP2006523728A
Publication Date:
April 27, 2011
Filing Date:
August 06, 2004
Export Citation:
Assignee:
PSS Belgium NV
International Classes:
H04R7/12; H04R9/02; H04R9/06; H04R31/00
Domestic Patent References:
| JP61053895A | ||||
| JP62248398A | ||||
| JP8205283A | ||||
| JP2002159091A | ||||
| JP59139791A | ||||
| JP5085197U | ||||
| JP53010420A | ||||
| JP62082900A | ||||
| JP62116100A | ||||
| JP57102296U | ||||
| JP4331600A |
Attorney, Agent or Firm:
D&M Holdings Inc.