JPH04149849A - Cassette loading device - Google Patents

Abstract

PURPOSE:To unnecessitate a leaf spring deforming space and to miniaturize the cassette loading device by rotating an unlocking lever on the sidewall face of a cassette holder. CONSTITUTION:When the cassette holder 5 is moved to an operating position, a sub-cassette holder 6 is rotated and the unlocking lever 17 is also rotated by abutting its end part 17a upon the edge of the opening end of the holder 6. The bent part of the leading end 17b of the lever 17 gradually presses an unlocking projection 4 in accordance with the rotation of the lever 17, and when the bent part is moved up to the operating position, the projection 4 is completely pressed by the lever 17 and the cover is unlocked.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette loading device for a magnetic recording/reproducing device, and in particular, the invention relates to a cassette loading device for a magnetic recording/reproducing device. The feature is the means for canceling the .

The tape cassette of the conventional VH8 system is as shown in Fig. 3.
A lid body 2 is rotatably attached around a shaft 3 so as to cover a tape draw-out opening formed on the front surface of the cassette housing 1.

A locking mechanism is provided to prevent the lid 2 from being opened inadvertently when not in use, and this lock can be released by pressing the lid lock release protrusion 4 provided on the side surface of the cassette housing 1. It is configured to be released.

Therefore, in a cassette loading device of a magnetic recording/reproducing apparatus using such a tape cassette, a mechanism is required for pushing the lid lock release projection 4 to release the lock.

A conventional cassette loading device having this lock release mechanism is shown in FIG.

In FIG. 4, reference numeral 5 denotes a cassette holder that moves reversibly between a cassette attachment/detachment position where the tape cassette 1 is attached/detached and an operating position where recording/reproducing operations are performed. A sub-cassette holder 6 having a support portion 6a for supporting the bottom surface of each attached tape cassette 1 is rotatably mounted around a shaft 7 as a fulcrum.

Reference numeral 8 denotes a rotary lever that is rotatably attached to a side plate 18 provided on the main body of the device with a shaft 9 as a fulcrum. There is.

A bin 11 provided on the sub-cassette holder 6 is slidably engaged with a long hole 10 formed in the rotary lever 8, and as the rotary lever 8 rotates, The sub-cassette holder 6 is also configured to rotate around a shaft 7.

FIG. 4 shows a state in which the cassette holder 5 is located at the cassette mounting position, and at this time, one end of the rotary lever 8 comes into contact with the fixing metal fitting 12 and moves clockwise against the biasing force. With this rotation, the sub-cassette holder 6 is also moved so that the rear end of the cassette mounted on the support portion 6a of the sub-cassette holder 6 is separated from the bottom surface 5b of the cassette holder 5. rotated to
It is configured to be convenient for attaching and detaching the cassette.

When the cassette holder 5 is moved in the direction of the arrow from this state toward the recording/reproducing position, the contact between the rotating lever 8 and the fixed part 12 is released, and the rotating lever 80 is moved counterclockwise by the biasing force of the spring. As the sub-cassette holder 6 rotates, the sub-cassette holder 6 rotates clockwise, and the cassette holder 5
The bottom surface of the cassette and the bottom surface of the cassette holder 5 are parallel to each other when the cassette is located at the recording/reproducing position.

13, as clearly shown in FIG. 5, one end is fixed to the outside of the side wall of the sub-cassette holder 6, and a protrusion 14 provided at the other end is attached to the sub-cassette holder 6.
This is a lock release lever made of an elastic body (plate) configured to protrude through an opening 15 formed in the lock release lever.

That is, the tape cassette 1 mounted on the sub-cassette holder 6 is configured to be unlocked by the protrusion 14 pressing the lid unlocking protrusion 4 .

Problems to be Solved by the Invention However, in the above configuration, the lock release piece 13
When the lid lock release protrusion 4 is pressed, it is elastically deformed outward by a distance t, as shown by the dotted line in FIG.

Therefore, a space corresponding to the amount of elastic deformation t is required, which hinders miniaturization of the device.

Means for Solving the Problems The cassette loading device of the present invention includes a cassette holder that moves reversibly between an attachment/detachment position where a cassette is attached/detached and an operation position where a recording/reproducing operation is performed, and a cassette holder that is attached to the cassette holder. a sub-cassette holder rotatably attached to the inside of both side walls of the cassette holder so as to support the bottom surface of the cassette; is located in a first position where the cassette holder is separated from the bottom surface of the cassette holder, and in a second position where the bottom surface of the cassette is parallel to the bottom surface of the cassette holder when the cassette holder is located in the operating position. means for driving the sub-cassette holder in conjunction with the movement of the cassette holder; and a means for driving the sub-cassette holder in conjunction with the movement of the cassette holder; The cassette holder is provided inside the side wall of the cassette holder so as to be rotatable in conjunction with the movement of the sub cassette holder so as to release the pressure on the lid lock release protrusion when the sub cassette holder is pushed and positioned at the first position. It consists of a lock release lever.

Effect According to the above configuration, the lock release lever provided on the tape cassette is rotated by the rotation of the lock release lever provided inside the cassette holder so as to rotate in conjunction with the movement of the cassette holder from the cassette attachment/detachment position to the operating position. Since the lock is released by pressing the lid lock release protrusion, there is no need to secure a space of t for the deflection of the leaf spring when the lock is released, which is the case with conventional methods. This makes it possible to downsize the device.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

Note that in FIGS. 1 and 2, the same components as in the conventional example shown in FIG. 4 are given the same reference numerals.

The difference between this embodiment and the conventional example is that the lock release lever 1 is replaced with the lock release piece 13 made of a plate spring in the conventional example.
This is because the number 7 was set.

This lock release lever 17 is connected to the sub cassette holder 6.
The inner wall 5a of the cassette holder is rotatably moved by a shaft 16 so as to be located in an opening 15 formed approximately at the center of the cassette holder.
is attached to the inside of the

One end 17a of this lock release lever 17 is configured to engage with the edge of the opening 15 of the sub-cassette holder 6 and rotate as the sub-cassette holder 6 rotates, and the other end The portion 17b is bent so as to slightly protrude toward the inside of the cassette holder 5.

Next, this operation will be explained.

When the cassette holder 5 is in the cassette attachment/detachment position (FIG. 1), the tape cassette 1 is placed on the sub-cassette holder 6 from diagonally above.

At this time, the rear edge of the sub-cassette holder 6 is separated from the bottom surface 5a of the cassette holder 5, and one end 17a of the lock release lever 17 is in contact with the sub-cassette holder 6, as shown in FIG. 2(A). The rotation position is regulated as shown in .

In this state, the lid lock release protrusion 4 of the tape cassette 1 and the other end 17b of the lock release lever 17 are in a non-contact state, and the lid 4 is not unlocked.

Thereafter, when the cassette holder 5 is moved in the direction of the arrow toward the operating position, the sub-cassette holder 6 is rotated in the direction of the arrow in FIG. 2(A) with this movement, as described above. Along with this rotation, the lock release lever 17 also has an end 17 attached to the opening edge of the sub-cassette holder 6.
a is brought into contact and rotated.

By rotating this lock release lever 17, its tip 1
The bent portion of 7b sequentially presses the lid lock release protrusion 4, and when it moves to the operating position, the lid lock release protrusion 4 is completely pressed against the lock release lever as shown in FIG. 2(B). 17, the lid lock is released.

In addition, in order to perform the above pressing operation smoothly, the tip 17b of the lock release lever 17 is formed into a tapered shape.

Effects of the Invention As described above, according to the present invention, the lock release lever that presses the lid lock release projection rotates on the side wall surface of the cassette holder without using the deformation of the leaf spring as in the conventional case. Since the lid lock can be removed, the space required for deformation, which is required for the leaf spring, is not required, which contributes to the miniaturization of the device.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of a cassette loading device according to an embodiment of the present invention, FIGS. 2(A) and (B) are side views of the same main parts in different operating states, and FIG. 3 is a VHS FIG. 4 is a perspective view showing a part of a cassette, FIG. 4 is a perspective view showing a main part of a conventional cassette loading device, and FIG. 5 is a side sectional view of the main part. 1...Cassette housing, 4...Protrusion for unlocking the lid, 5...Cassette holder 6...
...Sub cassette holder 6a...Cassette support part, 8...Rotating lever 17...
...Lock release lever 15...Opening.

Claims (1)

[Scope of Claims] A cassette holder that reversibly moves between an attachment/detachment position where a cassette is attached/detached and an operation position where a recording/reproducing operation is performed, and a cassette holder configured to support the bottom surface of a cassette attached to the cassette holder. a sub-cassette holder rotatably attached to the inside of both side walls of the cassette holder; When the cassette holder is in the first position and the cassette holder is in the operating position, the sub-cassette holder is placed in the cassette holder so that the bottom surface of the cassette is respectively located in a second position parallel to the bottom surface of the cassette holder. means for driving in conjunction with the movement of the cassette; when the cassette is located at the second position, the cassette is moved to the first position by pushing a lid lock release protrusion provided on a side surface of the cassette; In this case, a cassette loading device comprising a lock release lever rotatably provided inside a side wall of the cassette holder in conjunction with movement of the sub-cassette holder so as to release the pressure on the lid lock release projection. .