JPH0896458A - Cassette tape player - Google Patents

Abstract

PURPOSE: To prevent malfunction by utilizing the operation of an eject lever and operating a holding means holding a head plate at the unplaying position by a cam piece provided on the eject lever. CONSTITUTION: When the cassette P is inserted from the unplaying position, a cassette holder is lowered, in the case it is fully inserted, and the locked state of the eject lever 13 is released by this descent and retreated in the direction of this side by a spring 14. Then, a working piece 6 is pressurized by the cam piece 16, and a locking stepped part 7 and a locking piece 11 are disengaged, thereby the head plate 3 is moved in the playing direction by a spring 4. When the eject lever 13 is pressurized against the spring 14 from this state, the arc surface of the cam piece 16 is brought into contact with a rotary unit 15, then the head plate 3 is pushed and moved in the unplaying direction.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present application relates to a cassette type tape player.

[0002]

2. Description of the Related Art Conventionally, the cassette is located on the insertion opening side,
The head plate is held in the non-play position against the biasing spring, and when the cassette is inserted and the cassette holder is lowered to the play position, the head plate acts with the cassette to detect the lowered state, thereby, 2. Description of the Related Art A cassette type tape player including holding means for releasing a holding state and guiding a head plate to a play position is known.

[0003]

However, according to the above-mentioned conventional tape player, the detection lever that interacts with the cassette is projected on the substrate and is provided at the insertion opening side of the cassette. Therefore, if the child inserts a finger into the cassette insertion slot, or if the cassette is tilted downward and inserted incorrectly, the detection means will operate even if the cassette is not inserted. The head plate may move to the play position.In this state, when inserting the cassette into the cassette holder, the cassette holder descends onto the head plate that has moved to the play position and the tape player is It has the drawback of disabling and mechanical damage to the cassette or play mechanism.

[0004]

SUMMARY OF THE INVENTION Therefore, in the cassette type tape player, when the cassette holder is lowered to the play position, the eject lever is retracted to a position where the eject operation is possible. Holding means for restraining the movement of the eject lever in the play position direction and for acting to release the restrained state when the eject lever is retracted. Specifically, the holding means is a substrate. The middle part is pivoted horizontally on the lower surface, and the action piece that works with the cam piece provided on the eject lever is locked on one side and the locking piece provided on the head plate is locked on the other side. It comprises a holding lever each having a locking step portion for holding the head plate in the non-play position, and a sprig which elastically holds the locked state of the locking step portion and the locking piece. .

[0005]

When the cassette is inserted into the cassette holder and the cassette moves downward to the play position, the downward movement causes the eject lever to retract to a position where it can be ejected, whereby the holding means operates. The restraint state of the head plate is released, and the head plate moves to the play position by the elastic force.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. The drawings show the main part of the present application, and the substrate 1
On the upper side, a plate having a plane L shape is mounted, and a head plate 3 having a magnetic head 2 is attached to a vertical piece of the plate by a known means so as to be movable in the left and right directions in the drawing,
The head plate 3 is constantly urged leftward (play direction) by a spring 4. The substrate 1 is located on the insertion opening side (front side) of the cassette P, and an intermediate portion is pivotally attached to a lower surface thereof by a pivot shaft 5 so as to be horizontally rotatable.
A holding lever 9 is provided at one end (left end) of which the action piece 6 is extended, and at the other end, a holding piece 8 having a holding piece 8 having a locking step portion 7 at its tip. The lever 9 is urged to rotate in one direction (clockwise) by a spring 10, and the locking piece 11 protruding from the head plate 3 is normally locked to the locking step portion 7, The rotation is restrained, and the head plate 3 is held in the non-play position against the spring 4.

On one side edge (left side edge) of the substrate 1, there is a standing side plate 12, to which an eject lever 13 is supported so as to be movable back and forth, and a spring 14 always works. It is suppressed in the direction that allows eject operation (toward you). This eject lever 13
Although not shown, the cassette holder is released from the locked state by a well-known means in the process of shifting from the non-play position to the play position and retracted to a position where the eject operation is possible. When the eject lever 13 is retracted to the position where the eject operation is possible, the holding lever 9 is moved.
Abuts on the operating piece 6 of the
Rotational force is applied in the direction of releasing the engagement with the engagement piece 11 against 0, and at the time of the eject operation, it acts on the trochanter 15 provided on the head plate 1 to move the head plate 3 A cam piece 16 is provided for pressing in the non-playing position. In the figure, 17 is a reel shaft, 18 is a capstan shaft, 19 is a horizontally long hole, and 20 is a drive motor.

When the cassette P is inserted from the non-play position shown in FIGS. 1 and 2, when the cassette P is fully inserted, the cassette holder is lowered as shown in FIG. , The eject lever 13
The locked state is released, and the spring 14 moves backward. Then, the action piece 6 is pressed by the cam piece 16, and the holding lever 9 rotates counterclockwise against the spring 9, so that the locking step portion 7 and the locking piece 11 are rotated.
Is released, and the head plate 3 is released from the spring 4
To move in the play direction (to the left).

In this state, the ejection lever 13
Is pressed against the spring 14, the arc surface of the cam piece 16 comes into contact with the trochanter 15, and the head plate 3 is pushed in the non-playing direction (rightward).

[0010]

As described above, according to the present application, when the cassette holder is lowered to the play position, the operation of the eject lever that retracts to the position where the eject operation can be performed is utilized.
The cam piece provided on this structure operates the holding means that holds the head plate in the non-playing position to allow the head plate to move in the playing position direction. Therefore, even if a foreign object is inserted from the cassette insertion opening due to mischief, there is an advantage that a malfunction does not occur and a safe operation can be performed.

[0011]

[Brief description of drawings]

FIG. 1 is a plan view showing a main part in a non-play state.

[Figure 2] Front view

FIG. 3 is a plan view showing a main part with a part of an operation state cut away.

FIG. 4 is a plan view showing a main part with a part of a playing state cut away.

FIG. 5 is a plan view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 3 Head plate 4 Spring 6 Working piece 7 Locking step 8 Holding piece 9 Holding lever 10 Spring 11 Locking piece 13 Eject lever 16 Cam piece

Claims (2)

[Claims] 1. A head plate is horizontally movable on a substrate, is always elastically biased from a non-play position to a play position, and a cassette holder is capable of descending from the non-play position to the play position. In a cassette-type tape player with a structure in which the eject lever retracts to a position where it can be ejected as it descends, it normally restrains the movement of the head plate in the play position direction, and when the eject lever retracts, it acts by restraining it. A cassette type tape player characterized in that holding means for releasing the state is provided. 2. The holding means is pivotally mounted on the lower surface of the substrate so as to be horizontally rotatable, and an action piece acting on a cam piece provided on the eject lever on one side and a head plate on the other side. Holding levers each having a locking step portion for locking the provided locking piece to hold the head plate in the non-playing position,
The cassette type tape player according to claim 1, comprising a spring that elastically holds the locked state of the locking step portion and the locking piece.