JPS6312454Y2 - - Google Patents

Description

[Detailed description of the invention] This invention provides a VTR that uses a cassette tape, when the cassette tape is installed in the device.
This invention relates to a device for opening a cassette lid.

FIG. 1 is a partial perspective view showing the lid lock release operation button of the cassette magazine and the main parts of the lid lock release member of the cassette box. FIG. 2 is a partial perspective view of the cassette magazine inserted into the cassette box.

In FIG. 1, 1 indicates a cassette magazine, 1-1 indicates an upper half, and 1-2 indicates a lower half. A lid lock release button 2-1, which is a part of the lid locking member, is urged in the direction of arrow A by a spring (not shown) or the like so as to protrude from a window 1-3 provided on the side surface of the magazine. When the lid lock release operation button is pressed against the urging force in the direction of arrow A by this spring or the like, the lid 3 is unlocked and the lid 3 can be opened. Reference numeral 4 denotes a cassette box for holding the cassette magazine 1 in order to mount the cassette magazine 1 in a predetermined position of the recording/reproducing apparatus.
The cassette box 4 is provided with a member 5 for releasing the lid lock. When the cassette magazine 1 is inserted into the cassette box 4 as shown in FIG. 2, the lid locking member 2 is pushed in by the lock releasing member 5. Then, the lid 3 can be opened.

In this way, the conventional cassette tape lid lock release mechanism has a lock release operation button on the side of the cassette magazine 1, so that the lid 3 is intentionally locked.
In addition to attempting to release the lock, there is a risk of accidentally leaving the lid in a state where it can be opened, causing damage to the tape.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cassette magazine lid opening mechanism that eliminates the drawbacks of the prior art described above and reduces the chance of tape damage.

In order to achieve the above objectives, the present invention moves the lid locking mechanism to the inside of the magazine and has a structure that does not expose the operating section, unless the lid is intentionally unlocked. It is characterized in that the lid does not become openable, thereby preventing the risk of tape damage. This lock release operation is performed by inserting a lock release pin set into the chassis from the bottom of the cassette magazine into the magazine during the lowering process of mounting the cassette magazine in the device.

The present invention will be explained in detail below using figures.

FIG. 3 is a perspective view showing the main parts of the cassette magazine and magnetic recording/reproducing device according to the present invention;
5 and 5 are perspective views showing the main parts of the cassette magazine, and FIG. 5 shows the unlocked state.

In FIG. 3, 6 is a chassis, 7 and 8 are pins for positioning the cassette magazine 1, 9 is a tape supply reel, 10 is a tape take-up reel,
Reference numeral 11 indicates a pin for releasing the lid lock, and reference numeral 12 indicates a hole for inserting the lid lock release pin. Note that the illustration of the cassette box is omitted in this figure.

In FIGS. 4 and 5, 13 is a cassette lid;
14 is a locking member, 14-1 is a guide surface that comes into contact with the lock release pin 11 entering from the lock release hole 12 and generates a rotational force in the lateral direction as the pin enters, and 14-2 is a guide surface. Lid lock piece 13-
A lock surface 15 restricts the rotation of the lock member 14, and a reference numeral 15 indicates a pivot shaft for the rotation of the lock member 14. 16 indicates the spring.

To lock the lid, as shown in FIG.
and a lid lock piece 13 that is integrated with the lid 13.
-1, the rotation of the lid in the direction of the arrow is restricted. The lock can be released by lowering the cassette magazine 1 in the direction of the arrow mark as shown in FIG.
Lid lock release pin 11 installed on the chassis 6
enters the locking member 14, as shown in FIG.
is rotated by the lid lock release pin 11 in the direction of the arrow H against the biasing force of the spring 16, and the lock surface 14-
2 and the lid lock piece 13-1, and then remove the lid 13.
Rotation in the direction of arrow R is possible. In other words, the lid can be opened. With the lid unlocked, the cassette magazine 1 is opened by rotating the lid 13 in the direction of the arrow R using a lid opening member (not shown), and the magnetic tape inside is pulled out and placed in a predetermined path. It is attached to the device so that it can be mounted.

Conventionally, the cassette magazine lid is unlocked by pressing a lock release operation button exposed to the outside on the side surface of the cassette magazine. In this conventional method, there is a risk that the tape may be damaged if the lid is opened by mistake, even when the lid is not intentionally unlocked. Since the locking means provided inside the cassette magazine is unlocked by inserting a pin or the like set into the chassis through a hole provided on the bottom of the cassette magazine, it is possible for the cassette magazine to become open by mistake. is very small, which can reduce the degree of damage to the tape.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view showing the lid lock release operation button of a conventional cassette magazine and the lid lock release member in the cassette box; Fig. 2 is a partial perspective view of the cassette magazine inserted into the cassette box; The figure is a perspective view schematically illustrating the configuration and arrangement of the device according to the present invention, FIG. 4 is a perspective view showing an embodiment of the lid locking mechanism according to the present invention, and FIG. 5 is a portion showing the unlocked state of the lid locking mechanism in FIG. 4. FIG. 6...Shaft, 11...Lid lock release pin, 1
2...Lid lock release hole, 13...Lid, 14...Lock member.

Claims (1)

[Scope of utility model registration request] In a magnetic recording/reproducing device using a cassette magazine having a lid for the purpose of protecting the magnetic tape and equipped with a locking mechanism for the lid, the magnetic recording/reproducing device has a pin for unlocking the lid installed in the chassis of the device; During the lowering process to attach the cassette magazine to the device, insert the lid lock release pin through the hole provided on the bottom of the cassette magazine to unlock the lid provided inside the cassette magazine in the width direction. A lid lock release mechanism for a cassette magazine, characterized in that the lid is unlocked by rotating a member to a lock release position so that eccentric force after release is not applied to the lid lock release pin.