Tonearm device and reproduction device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMasayuki Shiwa, Tomoyuki Yamashiro
Life of this patent
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Abstract
A lifter mechanism includes: a first lifter; a second lifter; a first biasing member that biases the second lifter from a second lower limit position toward a second upper limit position; a locking lever that is displaced between a locked position in which the locking lever locks the second lifter in the second lower limit position and a released position in which the locking lever releases the lock of the second lifter from the second lower limit position; a second biasing member that biases the locking lever from the locked position toward the released position; a holding member that holds the locking lever in the locked position; and a queueing lever that pushes down the second lifter from the second upper limit position to the second lower limit position.
Claims8
A tonearm device used in a reproduction device for playing a phonograph record, the tonearm device comprising:
- an arm having a tip portion and supported to be rotatable downward to move the tip portion toward the phonograph record and be rotatable upward to move the tip portion away from the phonograph record, the tip portion being a portion to which a cartridge is attached;
- and
- a lifter mechanism that rotates the arm downward and upward, wherein
- the lifter mechanism includes:
- a first lifter that supports the arm from below and is raised and lowered between a first lower limit position and a first upper limit position located higher than the first lower limit position;
- a second lifter that supports the first lifter from below and is raised and lowered between a second lower limit position and a second upper limit position located higher than the second lower limit position;
- a first biasing member that biases the second lifter from the second lower limit position toward the second upper limit position;
- a locking lever that is displaced between a locked position in which the locking lever locks the second lifter in the second lower limit position and a released position in which the locking lever releases the lock of the second lifter from the second lower limit position;
- a second biasing member that biases the locking lever from the locked position toward the released position;
- a holding member that holds the locking lever in the locked position;
- and
- a queueing lever that pushes down the second lifter from the second upper limit position to the second lower limit position,
- when the holding member releases the hold of the locking lever from the locked position, the locking lever is displaced from the locked position to the released position by a biasing force of the second biasing member, the second lifter is raised from the second lower limit position to the second upper limit position by a biasing force of the first biasing member, the first lifter is raised from the first lower limit position to the first upper limit position in conjunction with upward movement of the second lifter, and the arm rotates upward in conjunction with upward movement of the first lifter, and
- when the queueing lever pushes down the second lifter from the second upper limit position to the second lower limit position, the second lifter abuts the locking lever, the locking lever is displaced from the released position to the locked position, the first lifter is lowered from the first upper limit position to the first lower limit position, and the arm rotates downward in conjunction with downward movement of the first lifter.
Dependencies are inferred from the claim text.