Title:
ELECTROMECHANICAL TRANSDUCER AND ELECTROACOUSTIC TRANSDUCER
Document Type and Number:
Japanese Patent JP2014179948
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electromechanical transducer and an electroacoustic transducer which are capable of making compatible satisfactory magnetic characteristics and impulse resistance while improving a degree of freedom in designing an armature.SOLUTION: An electromechanical transducer comprises an armature 22 and a pair of elastic members 23 and 24. The armature 22 includes a structural portion in which at least a pair of magnets, yokes 11 and 12 for guiding magnetic fluxes of the magnets and a coil 13 to which an electric signal is supplied are integrally disposed; an inside portion penetrating the structural portion; and an outside portion protruding to both sides of the inside portion. The armature 22 forms a magnetic circuit with the structural portion via a gap in which the magnetic fluxes are guided, at both sides of the inside portion. The pair of elastic members 23 and 24 couple both ends of the armature 22 in the outside portion and the structural portion, respectively. When the armature 22 is displaced relatively to the structural portion in the state where the electric signal is supplied to the coil 13, the pair of elastic members 23 and 24 generate resilience proportional to a magnitude of the displacement and inverse to the displacement.
Inventors:
IWAKURA YUKUSHI
DATE MUNEHIRO
DATE MUNEHIRO
Application Number:
JP2013054305A
Publication Date:
September 25, 2014
Filing Date:
March 15, 2013
Export Citation:
Assignee:
RION CO
International Classes:
H04R11/02; H04R9/02; H04R25/00
Domestic Patent References:
| JP2005525762A | 2005-08-25 | |||
| JP2005525762A | 2005-08-25 | |||
| JP2003520007A | 2003-06-24 | |||
| JP2006041768A | 2006-02-09 | |||
| JP2007074499A | 2007-03-22 |
Attorney, Agent or Firm:
Kohei Sudo