Solenoid switch and plating method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsBu-Hyun Sung, Soon-Kyo Hong
Life of this patent
Estimating the term…
Abstract
A latch type solenoid switch including a frame, a permanent magnet providing magnetic force to the frame, a coil unit which offsets the magnetic force of a permanent magnet when power is supplied, and a moving part which adheres to and detaches from the frame depending on the power supply to the coil unit. Anti-corrosion coating is applied to the surface of the frame and the moving part. The plating thickness on the contact surfaces between the frame and the moving part is thinner than on the other surfaces of the two bodies.
Claims11
A solenoid switch comprising:
- a frame;
- a coil unit to selectively generate a magnetic field;
- and
- a moving part comprising:
- a first surface selectively in contact with the frame based upon the magnetic field of the coil unit,
- a second surface not in contact with the frame, and
- an anti-corrosion material coating the first and second surfaces, a thickness of the anti-corrosion material being thinner on the first surface than on the second surface.
A method of plating a solenoid switch including a frame having a contact surface, and a moving part comprising a contact surface selectively in contact with the contact surface of the frame, the method comprising:
- plating the frame and the moving part with a first anti-corrosion material having a first thickness;
- removing the first anti-corrosion material from the contact surfaces of the frame and the moving part;
- and
- re-plating the frame and the moving part with a second anti-corrosion material having a second thickness.
An apparatus to record and/or generate data to/from an optical medium, comprising:
- a fixed frame;
- a tray;
- and
- a tray locking device, to selectively lock/unlock the tray to the fixed frame, comprising:
- a locking post fixed on the fixed frame,
- a first lever, rotatably installed on the tray, comprising a locking portion selectively locked/unlocked to/from the locking post and a cam to selectively interfere with the locking post to turn the first lever in a direction which the locking portion can lock to the locking post,
- a first elastic member to bias the locking portion towards the locking post,
- a solenoid switch, provided on the tray, comprising:
- a frame comprising a contact surface and a non-contact surface,
- a moving part comprising a contact surface to selectively contact the contact surface of the frame and a non-contact surface not in contact with the frame,
- a permanent magnet disposed within the frame to generate a magnetic force to attract the moving part,
- a coil to selectively generate a magnetic force to offset the magnetic force of the permanent magnet, and
- an anti-corrosion material coating the frame and the moving part,
- a second lever rotatably mounted to the tray and connected to the moving part and the first lever, and
- a second elastic member connected to the second lever to release the locking portion from the locking post when the moving part is detached from the frame,
- wherein a thickness of the anti-corrosion material is thinner at the contact surfaces than at the non-contact surfaces of the frame and the moving part.
Dependencies are inferred from the claim text.