The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2024
Filed:
May. 02, 2022
Applicant:
Alps Alpine Co., Ltd, Tokyo, JP;
Inventor:
Hiroki Toita, Fukushima, JP;
Assignee:
ALPS ALPINE CO., LTD, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01); H04R 3/00 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01);
U.S. Cl.
CPC ...
H04R 9/027 (2013.01); H04R 3/002 (2013.01); H04R 9/025 (2013.01); H04R 9/043 (2013.01); H04R 9/046 (2013.01); H04R 9/06 (2013.01); H04R 2209/022 (2013.01); H04R 2400/11 (2013.01);
Abstract
A vibrating unit includes a diaphragm and a bobbin, and a voice coil is secured to the bobbin. A detecting unit includes a moving magnet and a magnetic sensor. The magnetic sensor is disposed in a space surrounded by the bobbin, whereas the moving magnet is secured to an outer surface of the bobbin. Therefore, even when the moving magnet and a damper member move backward significantly, the magnetic sensor is prevented from being hit by the moving magnet and the damper member.