JPH0421965A - Cassette loading device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cassette loading device that controls opening and closing of a lid of a front loading mechanism in a recording/reproducing device.

[Conventional technology] FIG. 10 is a side view of a conventional cassette loading device.

FIG. 11 is a side view of the apparatus of FIG. 1O. Figure 10,
In FIG. 11, 21 is a cassette insertion slot, 24 is a lid,
25 is a cassette holder, and 20 is a cassette.

In FIGS. 10 and 11, conventionally, for example, in a magnetic recording/reproducing apparatus, a lid 24 of a front loading mechanism is
The cassette 20 is inserted into the cassette holder 25 through the lid 24 of the front loading mechanism.
In this case, the above-mentioned lid 24 has a structure that can be freely opened and closed when the cassette 20 is not installed in the magnetic recording/reproducing apparatus, or even when it is installed.

[Problems to be Solved by the Invention] However, in the conventional example as described above, for example, in the magnetic recording/reproducing loading for VH, S, it is difficult to determine whether the cassette is a VH3 cassette or a regular cassette. small VHS
Even if the small cassette 1 for VH3 is compatible with a cassette holder that can be used with a regular cassette, for example, if the small cassette for VH3 is inserted in the center, there is no positioning for inserting the small cassette. If you insert a small cassette, you may end up inserting it on the right side, making it difficult to insert it.
There was a drawback that it could fit cassettes such as those of ``Corder''.

The present invention has been made to solve these problems, and has a simple structure that controls the opening and closing of the lid for inserting each cassette and prevents different types of cassettes and foreign objects from entering the recording/reproducing device. The purpose of the present invention is to provide a cassette mounting device that can be used.

[Means for Solving the Problems] In order to achieve the above object, the cassette loading device of the present invention includes at least four optical sensors in the cassette insertion portion of the front loading mechanism, and the optical sensors allow large The device is configured to determine whether the cassette is a cassette, a small cassette, or neither, and to control the opening and closing of the lid of the front loading mechanism.

[Function] According to the present invention, at least four or more optical sensors are used at the entrance part (cassette insertion slot) of the front rope interface to detect whether the large cassette for regular VHS or the small cassette for VH3 is used. There is a means to determine whether the large cassette is the correct size cassette and to unlock the lids for the small cassette. Even if you try to insert the cassette in a different position, the lid will not be unlocked, so the opening of the lid opens to fit either the regular large cassette or the regular small cassette, making it easier to insert the cassette. It is possible to prevent objects such as other cassettes (for example, DAT cassettes) or foreign objects from being inserted into the recording/reproducing apparatus.

[Example] Figures 1 to 9 are diagrams showing an example of the present invention.
FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 6 is a side view showing one embodiment of the present invention.
A plan view of the state shown in the figure from above.

1 and 6 best illustrate the features of the invention.

In Fig. 1, 1 is a cassette insertion slot into which a cassette is inserted, 2 is a light receiving element of an optical sensor for determining whether it is a regular large cassette or a regular small cassette, and 3 is a large cassette of the optical sensor. 4 is a lid for the large cassette of the front loading mechanism, 5 is a cassette holder for mounting the cassette in the device, 6 is a lock lever for preventing the lid 4 from being opened, and 97 is a plunger for moving this lock lever 6. , 9 is a spring for biasing the lid 4 in the direction of arrow A in FIG. 1, and 8 is a rotation fulcrum of the lid 4.

1O is a regular large cassette, 11 is a regular small cassette, 1
2 is plunger 7 for large opening, plunger 1 for small opening
7 and a return spring for returning the lock lever 6 for large openings and the lock lever 16 for small openings to their original positions. 1
7 is a plunger for small openings that pulls a lock lever 16 for small openings.

16 is a lock lever 913 for locking the lid 13 for a regular small cassette; 14 is a light emitting element as a light sensor for the regular small cassette; 15
is a light receiving element as a light sensor for a regular small cassette.

Next, in the above configuration, when the regular large cassette 10 is inserted into the cassette insertion slot 1 as shown in FIG. The cassette IO is cut off, and the infrared light is no longer received by each light receiving element 15.2, and the outputs of the optical sensors 41 to 44 are changed to the respective amplifiers 45 to 48 as shown in FIG.
The infrared light is amplified and compared by the optical sensor 41.
42. Since both the optical sensors 43 and 44 are blocked, it is determined that this is the large cassette 10, and the plungers 7 and 17 for large and small openings are connected to the driver 51.
．． 52, the lock levers 6 and 16 for large openings and small openings are rotated, and the lids 4 and 13 are unlocked, and the lids 4 and 13 are moved in the direction of arrow B in FIG. It becomes possible to move in the direction. FIG. 4 shows the cassette inserted halfway, and the cassette is inserted into the cassette holder 5, and as shown in FIG.
is installed. At this time, a switch (not shown) returns each plunger 7, 17 to lock the lids 4, 13. As a result, even if an attempt is made to insert another cassette even though cassette -10 is already installed, the lid 4 and M2S are locked, and it is possible to prevent the cassette from being inserted twice.

Next, in FIG. 7, it may be that the regular small cassette 11 is about to be inserted, or the light emitting element 14 of the small cassette optical sensor is blocked and infrared light is emitted onto the light receiving element 15 of the small cassette optical sensor. Also, the light emitting element 3 of the optical sensor for large cassettes cannot be inserted. Since the infrared light is not blocked, the light receiving element 2 determines that the detector 40 shown in FIG. -16 rotates so that only the lid 13 can be opened and closed, and the small cassette 11 can be inserted from the entrance of the lid 13.

Furthermore, FIG. 8 is a front view of the apparatus shown in FIG. As shown in FIG. 8, a combination of optical sensors of a light receiving element 2 and a light emitting element 3 is provided on the left outer side, a combination of optical sensors of a light receiving element 152 and a light emitting element 14 is provided on the left inner side, and a light receiving element 2 and a light sensor combination are provided on the right outer side. A combination of optical sensors for the light emitting element 3 and a combination of optical sensors for the light receiving element 152 and the light emitting element 14 are provided on the right inner side.

As shown in FIG. 9, when the large cassette 10 is about to be inserted normally, the lid 4 and the cover 13 begin to open and close, and when the small cassette 11 is about to be inserted normally, the lid 4 and the lid 13 are opened and closed. Only 13 can be opened and closed. In addition, 18
is the rotation fulcrum of the lid 13.

To explain the detector 40 in FIG. 12 in more detail,
Even if only the right side 41 or only the left side 42 of the light sensor for the small cassette is blocked, the small cassette 11 will not be identified as the small cassette 11, and only when the infrared light from both the left and right sides of the light sensors 41 and 42 is blocked, the small cassette 11 will be detected. and make a judgment. Also, ■ optical sensor 41, 4
It is determined that the cassette is a large cassette 10 only when the infrared light on both the left and right sides of the cassette 2 and the left and right sides of the optical sensors 43 and 44 are blocked. In the case (2), only the plunger 17 is pulled by the driver 51, and in the case (2), the two plungers 7 and 17 are pulled by the driver 52.

[Effects of the Invention] As explained above, the present invention uses two sets of optical sensors arranged on both sides of the cassette insertion slot to detect whether a regular large cassette or a regular small cassette is inserted. By locking the two sets of lids of the front loading mechanism so that they can only be opened when something happens, it is possible to store different types of cassettes, such as DAT cassettes and C
This has the effect of preventing a cassette from being inserted and being unable to be removed, and preventing foreign objects other than the cassette from being inserted into the recording/reproducing apparatus.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a side view showing a state in which a cassette is about to be inserted in the apparatus shown in Fig. FIG. 4 is a side view showing a state in which the cassette blocks the optical sensor; FIG. The figure is a side view of the device shown in Fig. 1, with a regular cassette installed and the lid of the front loading mechanism locked; Fig. 6 is a plan view of the device shown in Fig. 3, viewed from above; The figure is a side view of the apparatus shown in Fig. 1, showing a state in which a small cassette is inserted, Fig. 8 is a front view of the apparatus shown in Fig. 1, and Fig. 9 shows the lid of the front loading mechanism. 10 is a plan view of a conventional cassette loading device, FIG. 11 is a side view of the device shown in FIG. 10, and FIG. 12 is a block diagram illustrating the operation of the device shown in FIG. 1 of the present invention. . In the figure, cassette insertion slot 2.15 + light receiving element 3.14: light emitting element 4.13: lid 5: cassette holder 6.16: locking mechanism 7.17: plunger 8.18 + lid rotation fulcrum 9: return spring lO : Large cassette 11: Small cassette 12 Nib plunger return spring

Claims (1)

[Claims] In a cassette loading device having a front loading mechanism, at least four optical sensors are provided in the cassette insertion portion of the front loading mechanism, and the optical sensors determine whether the cassette is a large cassette, a small cassette, or neither. A cassette loading device characterized by controlling opening and closing of a lid of a front loading mechanism.