JP2622783B2 - Cassette type tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette type tape player.

[0002]

2. Description of the Related Art Conventionally, a cassette is located at an insertion port 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-described conventional tape player, the detection lever that works with the cassette protrudes above the substrate, and is provided at the insertion port side of the cassette. For example, when a child mischiefs such as putting a finger into the cassette insertion slot or when the cassette is tilted downward and inserted improperly, the detection means is activated even though the cassette is not inserted. When the cassette is inserted into the cassette holder in this state, the cassette holder may be lowered onto the head plate shifted to the play position, and the tape player may be moved to the play position. The drawbacks are that they make it impossible and mechanically damage the cassette or playing mechanism.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a cassette type tape player, which extends in a direction perpendicular to the eject lever on the lower surface of the substrate, and has a middle portion pivotally rotatable in a horizontal direction. A locking step provided on the other side of the head plate for locking the locking piece provided on the head plate to hold the working piece acting on the cam piece provided on the eject lever when the eject lever is retracted, and holding the locking piece at the non-play position. And a spring that elastically retains the locked state between the locking step and the locking piece. When the eject lever is retracted, the holding lever is horizontally moved by the action of the cam piece and the action piece. By rotating, the locked state of the locking step and the locking piece is released.

[0005]

When the cassette is inserted into the cassette holder and the cassette is moved down to the play position, the ejecting lever is retracted to a position where the eject operation can be performed by the downward movement, whereby the holding means is operated. When the head plate is released from the restrained state, the head plate moves to the play position by the urging force.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The drawing shows the main part of the present application, and the substrate 1
On the upper side, a head plate 3 having a magnetic head 2 is attached by a known means so as to be movable in the left-right direction in the figure, which is made of a plate having a flat L-shape.
The head plate 3 is constantly urged leftward (play direction) by a spring 4. The substrate 1 is located on the insertion port side (front side) of the cassette P, extends on the lower surface thereof in a direction perpendicular to an eject lever 13 described later, and has an intermediate portion pivotally mounted by a pivot 5 so as to be horizontally rotatable. At one end (left end), a holding lever 9 is provided which is provided with an operating piece 6 and at the other end a holding piece 8 having a holding piece 8 having a locking step 7 at its tip. Holding lever 9
Is urged to rotate in one direction (clockwise) by a spring 10, and normally locks a locking piece 11 protruding from the head plate 3 to the locking step 7 to rotate the locking step 11. Is restrained, and the head plate 3 is held at the non-play position against the spring 4.

On one side edge (left side edge) of the substrate 1, there is provided a rising side plate 12, and an eject lever 13 is supported on the side plate 12 so as to be able to move back and forth. It is suppressed in the direction in which the eject operation can be performed (forward direction). This eject lever 13
Although not shown, in the process of shifting the cassette holder from the non-play position to the play position, the locked state is released by well-known means, and the cassette holder retreats to a position where the eject operation can be performed. 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
0, a rotational force in a direction of releasing the engagement with the engagement piece 11 is applied, and at the time of an eject operation, it acts on the trochanter 15 provided on the head plate 3 so that the head plate 3 is moved. A cam piece 16 is provided for pressing in the direction of the non-play 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 retreats toward the front. Then, the action piece 6 is pressed by the cam piece 16 and the holding lever 9 rotates counterclockwise against the spring 10, so that the locking step 7 and the locking piece 1 are rotated.
The head plate 3 is moved in the play direction (left direction) by the spring 4 when the engagement with the head plate 1 is released.

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 invention, when the cassette holder is lowered to the play position, the operation of the eject lever which retreats to the position where the eject operation can be performed is utilized.
The holding means for holding the head plate at the non-play position is operated by the cam piece provided thereon to allow the head plate to move in the play position direction, and the holding means is provided on the lower surface of the substrate. Therefore, even when a foreign object is inserted from the cassette insertion port due to tampering or the like, there is no possibility of malfunction and a safe operation can be performed.In particular, according to the present application, the holding lever is perpendicular to the eject lever. It is provided with a cam piece provided on the eject lever at one end and a locking piece provided on the head plate at the other end, so that the releasing action of the locking piece works extremely rationally, It has the advantage that the number of parts is small and it is effective for miniaturization.

[0011]

[Brief description of the drawings]

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

FIG. 2 is a front view thereof.

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 (1)

(57) [Claims] 1. A head plate which is horizontally movable on a substrate, is always elastically urged from a non-play position to a play position, and a cassette holder is capable of descending from a non-play position to a play position. In a cassette type tape player in which an eject lever arranged in a direction orthogonal to a head plate with a downward movement is retracted to a position where an eject operation is possible, the eject lever extends in a direction orthogonal to the eject lever on a lower surface of a substrate, and a middle portion is horizontal. The head is rotatably pivoted, and is engaged with a working piece which acts on one side of the eject lever when the eject lever is retracted, and a locking piece provided on the head plate on the other side. A holding lever having a locking step for holding the plate at a non-play position, and a spring for elastically holding a locking state between the locking step and the locking piece. When the eject lever is retracted, the holding lever is horizontally rotated by the action of the cam piece and the action piece to release the locked state between the locking step and the locking piece. Cassette type tape player.