JPH0124774Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape cassette mounting device having an opening/closing lid. Even if there is a difference in the insertion position of the tape cassette, the opening/closing lid of the tape cassette can be reliably unlocked.

As tape cassettes with opening/closing lids, for example, those shown in FIGS. 1 and 2 have been put into practical use.

That is, 1 is a rectangular parallelepiped case body,
A supply reel and a take-up reel (both not shown) on which the magnetic tape 2 is wound are rotatably and slightly movably movable in the diametrical direction.

The magnetic tape 2 from the supply reel is guided by the pin 3 and led out to the outside (opening) of the cassette through the first tape inlet/outlet 4, and when not in use, the magnetic tape 2 is guided by the upper and lower ribs 5, 6 provided on the front side of the cassette body. along the front side of the cassette body.
The tape is led to a tape inlet/outlet 7, and from the tape inlet/outlet 7 to a take-up reel via a pin 8.

The cassette main body 1 is provided with an opening/closing lid 13 having pivot points 11 on opposite side plates 1a and 1b, respectively.

This opening/closing lid 13 has a face plate 13a that covers the front side of the cassette along which the tape 2 runs, and a face plate 13b that covers a part of the both side plates 1a and 1b.

Note that the face plate 13 of the both side plates 1a and 1b
The vicinity 1c of the part in contact with b is cut out by the thickness of the face plate 13b, and the face plate 13b and both side surfaces 1a, 1b are cut out.
are constructed so that they are on the same plane.

When not in use, the opening/closing lid 13 is closed as shown in FIG.

Reference numeral 14 denotes a lock release protrusion 13 of the opening/closing lid, which can be inserted into and out of the through hole 16 provided in the gap recess 15 created by the notch 1c between the side plate 13b of the opening/closing lid 13 and the side plate 1a of the cassette body. The end portion thereof is arranged so as to be lower than the side plate 13b and the side plate 1a of the cassette body even when it is extended (locked). This lock release protrusion 14 is formed in the notch portion 1 by a structure disclosed in, for example, Japanese Utility Model Application No. 51-147419.
It is interlocked with a locking protrusion 18 that can be entered and removed through a through hole 17 provided at c.

Note that this locking protrusion 18 is always biased by a spring in the protruding direction, and in the protruding state, it engages with an engagement recess (not shown) provided inside the side plate 13b of the opening/closing lid 13 and locking the opening/closing lid. 13 is prevented from opening.

That is, the opening/closing lid 13 is locked in the closed state.

By pressing the lock release projection 14 from this locked state (the state shown in FIG. 2), the lock projection 18 is pulled into the cassette, and the lock projection 18 is pulled into the cassette.
8 is disengaged from the recessed portion inside the side plate 13b of the opening/closing lid 13, and the opening/closing lid 13 is unlocked.

Conventionally, as shown in FIG. 3, the lock release means used when a tape cassette is attached is to have a spring body 21 protrude inward from one side of the cassette storage table 20, and the fixed position of the spring body 21 to be fixed to the cassette. When the main body is accurately inserted to the predetermined position regulated by the stopper 22,
Lock release protrusion 1 located in the gap recess 15
It was set to the position where 4 was pressed.

However, according to this configuration, since the lock release protrusion 14 located in the gap recess 15 is relatively small (if the gap recess 15 is made larger and the lock release protrusion 14 is made larger, the damage to the recording and reproducing apparatus will be reduced). (During installation, there is a risk that the user's fingers or the like may touch this lock release protrusion 14 and release the lock inadvertently.) If the cassette body is not inserted into the position where it contacts the stopper 22 accurately, Since the spring body 21 and the unlocking protrusion 14 do not come into contact with each other, the opening/closing lid 13 is not unlocked.

That is, for example, when the cassette body is suddenly inserted into the storage stand 20, the tip of the cassette body contacts the stopper 22 with a strong force, and the cassette body stops at a position slightly retreated from the stopper 22 due to the reaction. , the lock may not be released.

In this unlocked state, the cassette storage stand 20 is lowered toward the reel stand, and as it is lowered, only the opening/closing lid 13 comes into contact with the fixing pin 23 as shown in FIG. When the opening/closing lid 13 is opened with the downward movement, the opening/closing lid 13
This may result in damage.

Note that 24 in FIG. 3 is a through hole provided in the bottom plate of the cassette storage stand 20 into which the reel stand is inserted, and the top plate of the cassette storage stand 20 is shown in a state where it has been removed.

As described above, in the present invention, even if the cassette main body does not stop at an accurate predetermined position, the reel storage stand 20 is lowered in that state, and the reels in the cassette main body are engaged with the reel stand on the device side. The structure is such that the lock is released as long as it is possible to do so.

One embodiment will be described with reference to FIG. 5 and the following drawings.

In FIGS. 5, 6, and 7, reference numeral 25 is a sliding lever provided on the back surface of the bottom plate of the cassette storage table 20 so as to be slidable in the insertion direction of the cassette. As clearly shown in the figure, it is bent so as to come into contact with the front surface of the cassette body to be inserted, and the bent portion 26 protrudes from the bottom plate of the cassette storage stand 20.

The sliding lever 25 is biased by a spring 27 in a direction opposite to the insertion direction of the cassette main body, and under normal conditions, the bent portion 26 is inserted into the cassette insertion slot by a distance t from the stopper 22, which is the regular stopper position. (see Figure 6).
Further, one end of a bent leaf spring 28 is fixed to this sliding lever 25.
The distal end portion 28a projects inward through a through hole 27 provided on the side surface of the cassette storage stand 20, and constitutes a spring body for unlocking.

The distance between the spring body 28a and the bent portion 26 coincides with the position of the lock release protrusion 14 from the front surface of the cassette body 1.

In the above configuration, the cassette main body is inserted into the cassette storage base 20, and the front surface of the cassette body
6, the spring body 28
a engages with the lock release protrusion 14, and the lock is released.

When the cassette body is further inserted in this state, the bent portion 26 is pushed by the front surface of the cassette, and the sliding lever 25 slides together with the cassette body.

Therefore, the spring body 28a also moves while remaining engaged with the lock release projection 14. In this way, in the present invention, the spring body 28a and the lock release protrusion 14 are always movable while being engaged with each other within the predetermined distance t, so that the lock release protrusion 14 can be moved as described above. The cassette body comes into contact with the stopper 22 and the engagement between the spring body 28a and the lock release protrusion 14 does not disengage even if the cassette body is moved back a little.

Therefore, for example, it is sufficient to set the distance t within the eccentricity tolerance range that allows engagement between the reel in the cassette and the reel stand.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a tape cassette with an opening/closing lid, Fig. 2 is a side view of the main part of the opening/closing lid in the closed state, and Fig. 3 is a perspective view of an example of a tape cassette with an opening/closing lid.
FIG. 4 is a side view showing the opening and closing operation of the opening/closing lid, FIG. 5 is a perspective view showing one embodiment of the present invention, FIG. 6 is a plan view of the main parts, and FIG. It is a front view of the main part. 1...Cassette body, 13...Opening/closing lid, 14...
...Lock release protrusion, 20...Cassette storage stand,
22...stopper, 25...sliding lever, 26
...Bending portion, 27... Spring, 28, 28a... Spring body.

Claims (1)

[Scope of utility model registration request] A cassette storage stand into which a tape cassette is inserted has a lock release protrusion on the side surface of the cassette body that unlocks the opening/closing lid when pressed, and the tape cassette comes into contact with the front surface of the tape cassette inserted into the cassette storage stand; The tape cassette has a stopper provided on the cassette storage base to regulate the final insertion position of the tape cassette, and a contact portion that comes into contact with the front surface of the tape cassette inserted into the cassette storage base. Press the lock release protrusion at a position where a sliding lever provided on the cassette storage stand so as to be slidable in the direction and the front surface of the tape cassette inserted into the cassette storage stand abut against the contact portion. a lock release spring body fixed to the sliding lever so that the tape cassette is inserted; and a spring body that elastically urges the sliding lever so that the abutting portion is positioned toward the cassette insertion opening from the stopper when the tape cassette is not inserted. A tape cassette mounting device comprising: