Back to results
US 10,381,026 B2Granted
Record player
AssigneesTEAC Corporation, Prospine, Inc.
InventorsTakao Tanishima, Hidetoshi Konno
Life of this patent
Estimating the term…
Abstract
A record player includes a turntable, a drive motor, a non-contact transmission mechanism, a tone arm, and a housing. The non-contact transmission mechanism includes a drive-side rotor and a magnetic member. The drive-side rotor is rotated by a driving force of the drive motor. The drive-side rotor is formed of a permanent magnet. The magnetic member is constituted of a soft magnetic body. The turntable is rotated according to the rotation of the drive-side rotor by an attraction force acting on the magnetic member from the permanent magnet.
Claims12
A record player comprising:
- a turntable on which a record is placed;
- a drive motor generating a driving force to rotate the turntable;
- and
- a non-contact transmission mechanism transmitting the driving force of the drive motor to the turntable in a non-contact manner by a magnetic force,
- the non-contact transmission mechanism including:
- a drive-side rotor having a permanent magnet that generates the magnetic force and being rotated by the driving force of the drive motor;
- and
- a magnetic member provided on an entire circumference of an outer peripheral portion of the turntable in a state of partially opposing the permanent magnet, so that an attraction force due to the magnetic force from the permanent magnet acts on the magnetic member, the magnetic member being constituted of a soft magnetic body which is magnetized only while in a magnetic field of the permanent magnet and has no magnetic force after leaving the magnetic field,
- wherein the turntable is rotated according to the rotation of the drive-side rotor by the attraction force acting on the magnetic member from the permanent magnet.
6 more elements
Dependencies are inferred from the claim text.