JPS6230162Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a record player lid and tone arm lock control device.

A cartridge placed on a tone arm is used to reproduce signals recorded on a record disc, but such a cartridge and tone arm are placed on a lid that can be opened and closed with respect to the turntable. There is a player with a similar structure.

In a player with such a structure, signal reproduction is possible only when the lid of the player is closed, so by controlling the opening and closing of the lid, the lid can be opened or closed during a record performance, interrupting the performance.
It is necessary to prevent the surface of the disk and the cartridge from being damaged.

However, in the case of conventional players with this structure, the lid can be opened even while a record is being played, so there is a risk that the protection of the record disk and cartridge is insufficient, or that the record play may be interrupted due to malfunction. This was a drawback.

The present invention improves the above-mentioned drawbacks of conventional players having a tone arm in the lid, and provides a player with stable operation without the risk of the lid opening or closing during record playing. An object of the present invention is to provide a player lid and tone arm lock control device.

The lock control device according to the present invention has a lid locking means for securing the lid, ie, the upper half of the cabinet of the record player, to the base portion, ie, the lower half of the cabinet, and an arm locking means for securing the tone arm to the armrest. The device is characterized in that it is configured to operate either the lid locking means or the arm locking means in accordance with the playing state of the record, that is, the operation state of the tone arm, and the detection signal of the opening/closing of the lid, thereby bringing the record into the locked state. be.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and is a perspective view of the player with the lid open. In this figure, a turntable 2 is provided in the lower half 1 of the player's cabinet, and a record disc is placed on the turntable 2 and rotated. Next, an upper half 3 of the cabinet is arranged so as to be openable and closable with respect to the lower half 1 of the cabinet, and a tone arm 4 of a linear tracking type is provided at a position of the upper half 3 of the cabinet facing the turntable 2. It is being
The cartridge 5 provided at the tip of the tone arm 4 is designed to reproduce signals by tracing the sound grooves of a record disc. Records can only be played when the case is closed. Selection of operation modes such as start of record play and cut is performed by controlling the movement of tone arm 4.
A driving means 6 is provided for driving the
The tone arm 4 is driven via a guide rail 7 and the like. Furthermore, when the tone arm 4 is in a non-operating state, it is held inside the armrest 8;
In particular, in this diagram, tone arm 4 is used for explanation.
The figure shows a state in which the disc has been slightly slid towards the center of the record disc.

In addition to the above-mentioned parts, this player is provided with a lid locking means and an arm locking means for fixing the upper half 3 of the cabinet to the lower half 1 of the cabinet. It consists of a hook 9 provided on the lower half of the cabinet 1 and a recess 10 that cooperates with the hook 9. Inside the recess 10 there is an electrically operable locking means and an insertion state of the hook 9. Lid opening/closing detection means is provided. Next, the arm locking means is provided in the armrest 8, and includes a rest member 11 and an electrically operable arm presser 12, as shown in FIG.
It is composed of. Further, the rest member 11 is provided with rest state detection means for detecting whether or not the tone arm 4 is held by the rest member 11.

The lid opening/closing detection means and the rest state detection means can be constructed using, for example, a micro switch or the like, but they may also be constructed using other parts.

Next, a predetermined lock control means is further provided to control the operations of the lid lock means and the arm lock means, and the operation of this lock control means will be explained in detail below with reference to FIG.

As mentioned above, the performance mode of the player is determined by the operation of the tone arm, and the lid locking means of the player needs to be operated according to the performance mode, so the lock control means 13 receives the signal from the arm control means. Lid locking means 1 as one of the inputs
7 and the arm lock means 18, and the detection signals from the lid opening/closing detection means 15 and the rest state detection means 16 are transmitted to the lock control means 13.
has been entered.

Here, the lid locking means 17 and the arm locking means 18 are controlled so that only one of them is always in the locked state, and when the arm locking means 18 is released from the locked state and the record disc is being played, the lid is locked. The lid is not opened or closed when the locking means is in a locked state, and the lid is unlocked and can be opened or closed only after the tone arm is locked.

In this way, the two locking means 17 and 18 operate complementary to each other, but the locking means 13
When the lid opening/closing detection means 15 detects that the lid is closed and the arm control means 14 generates a signal for lead-in of the tone arm, the lid locking means 17 is locked, and the arm locking means is locked. Release the condition.

Further, when the rest state detection means 16 detects that the tone arm is in the rest position and the arm control means 14 does not generate a lead-in signal, the lock state of the lid lock means 17 is released and the arm lock means 18 is released. It becomes locked.

Since the lock control means 13 in the player lid and tone arm lock control device according to the present invention operates as described above, the lid, that is, the upper half 3 of the cabinet, is locked when playing a record disc, and when the lid is opened or closed. Since the tone arm 4 is always locked in the armrest 8, the operation of the player is stabilized and there is no risk of damage to the record disc or cartridge.

It is clear that the lid locking means and the arm locking means are not limited to those shown in the above-described embodiments, and that various structures can be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a player equipped with a lid and tone arm lock control device according to the present invention, and FIG. 2 is a view showing an example of arm locking means.
FIG. 3 is a block diagram showing the structure of the apparatus according to the present invention. Explanation of symbols of main parts, 13...Lock control means, 14...Arm control means, 15...Lid opening/closing detection means, 16...Rest state detection means, 17...
Lid locking means, 18... Arm locking means.

Claims (1)

[Scope of utility model registration request] Lid locking means for locking the base portion and the lid in a closed state of the player, which comprises a base portion on which a turntable is provided, and a lid that is openable and closable with respect to the base portion and holds a tone arm; arm lock means for fixing the tone arm at a rest position; arm control means for controlling movement of the tone arm; rest state detection means for detecting a rest state of the tone arm; and a lid for detecting an open/closed state of the lid. and a lock control means for operating either the lid locking means or the arm locking means by inputting signals from the arm control means, the rest state detection means, and the lid opening/closing detection means, The lock control means locks the lid locking means when the lid open/close detection means detects the closed state of the lid and the arm control means generates a tone arm lead-in signal, and locks the lid locking means. and locks the arm locking means when the rest state detection means detects that the tone arm is in the rest position and the arm control means does not generate the lead-in signal. A lock control device for a player's lid and tone arm, characterized in that the lid and tone arm of the player are locked and the lid locking means is unlocked.