JPH0424492Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a tape cassette loading device provided in an apparatus for recording and/or reproducing at least one of magnetic tape in a tape cassette.

BACKGROUND ART Conventional videotape cassettes are inserted with the lid facing forward, which is what is called lateral insertion. In such lateral insertion, the cassette lid is unlocked by a lock release piece provided on the side surface of the cassette holder pressing a release protrusion provided on the cassette when the cassette is inserted.

Magnetic recording where such lateral insertion is used/
Since the playback device has a large cassette insertion slot formed on its front face, the number of operation keys provided on the front face is limited, and the outer size of the operation keys must also be relatively small. Therefore, there has been a desire for an apparatus in which the cassette can be inserted vertically and the cassette insertion opening can be made smaller.

Purpose An object of the present invention is to provide a cassette loading device that can reliably release the locked state of the front cover when inserting a cassette in the vertical direction.

The present invention has a cover body 3 in a rectangular parallelepiped cassette 1.
A release protrusion 7 for unlocking the lid 3 is provided on one longitudinal side 2a of the cassette holder 12, into which the cassette 1 is inserted along the insertion direction B parallel to the longitudinal direction of the lid 3. The cassette holder 12 is configured so that loading is completed by moving downward E from the insertion position of the cassette 1. At the bottom of the bottom surface 51 of the cassette holder 12, around an axis perpendicular to the insertion direction B, A pressing piece 59 has a protrusion 59b formed at one end thereof and protrudes outward and upward along the insertion direction B of the cassette holder 12 in the horizontal state so as to be in a horizontal state and in an upright state.
and the protrusion 59b presses the pressing piece 59 onto the cassette holder 12.
A spring 60 applies a spring force to keep the cassette holder in a position away from the cassette holder, and a spring 60 extends downwardly E from near the insertion position on the side of the cassette holder 12, and when the cassette holder 12 is in the insertion position, the protrusion 59b 12, and the cassette holder 12 is located below E.
When the pressing piece 59 is moved to the
a pressing portion 62c that angularly displaces the protrusion 59b so that the protrusion 59b enters the inside of the cassette holder 12; This cassette loading device is characterized in that it presses the release protrusion 7 of the cassette 1 that is being loaded.

Embodiment FIG. 1 is a perspective view of a cassette used in a cassette loading device according to the present invention, and FIG.
It is a bottom view seen from the arrow A side of the figure. Cassette 1
The cassette body 2 includes a cassette body 2 and a lid 3 supported on the upper part of the cassette body 2 so as to be openable and closable. Erroneous erasure prevention claws 4 and 5 are formed near both ends of the lid 3. Further, a prevention groove 6 is formed near the center of the lid 3 to prevent incorrect insertion during lateral insertion. A release protrusion 7 for unlocking the lid 3 is formed on one side 2a of the cassette body 2, and by pressing the release protrusion 7, the lid 3 can be opened and closed. A prevention groove 8 is formed in the bottom surface 2b of the cassette body 2 to prevent incorrect insertion during vertical insertion. This prevention groove 8
are formed along the longitudinal direction of the cassette body 2.

FIG. 3 is a simplified perspective view of the cassette holder 12, with a portion of the cassette holder 12 shown cut away for convenience of illustration.
A protrusion 52 is formed on the bottom surface 51 of the cassette holder 12 along the cassette insertion direction B. As shown in FIG. This protrusion 52 can engage with a prevention groove 8 formed on the cassette 1 to prevent incorrect insertion during longitudinal insertion. Since the protrusion 52 extends along the insertion direction B, it can engage with the erroneous insertion prevention groove 8 over a sufficiently long range, so that the cassette 1
It is possible to sufficiently hold the cassette not only when the cassette is horizontal, but also when the lid 3 side is facing downward.

A release means 55 is provided on the opening 54 side of the bottom surface 51 of the cassette holder 12 for pressing the release protrusion 7 provided on the cassette 1 to release the locked state of the lid 3. This release means 55 includes a pair of left and right bearings 56, 57 and a support shaft 5, as shown in the fourth figure.
8, and a pressing piece 59 rotatably supported by the support shaft 58 around the axis of the support shaft 58. One end of a torsion spring 60 is fixed to the support shaft 58, and the other end of the torsion spring 60 is fixed to a locking portion 61 of the pressing piece 59. Therefore, the pressing piece 59 has a torsion spring 60
It is urged in the direction of arrow C by the spring force of.

A cassette guide member 62 is provided on the front side of the opening 54 of the cassette holder 12 in FIG. This cassette guide member 62 is connected to the frame 1.
1 is supported. The cassette guide member 62 is
It consists of a horizontal part 62a, a stepped part 62b, and a vertical part 62c which is a pressing part. The cassette 1 is guided by the horizontal portion 62a during horizontal transfer, and is guided by the vertical portion 62c during vertical transfer.

Figure 5 shows a release means 55 used when inserting a cassette.
FIG. Figure 5 1
When the cassette 1 is inserted into the cassette holder 12 in the direction of arrow B as shown in FIG. The cassette 1 is transferred to the inside of the cassette holder 12. Although the pressing piece 59 is urged in the direction of arrow C by the spring 60, the protrusion 59 provided at one end of the pressing piece 59
a is in contact with the cassette holder 12, so that the pressing piece 59 maintains a horizontal state.

When the cassette is further transferred into the cassette holder 12 by the feed roller 20 and reaches the cassette horizontal transfer completion position shown in FIG. 5, the cassette 1 begins to move in the direction of arrow E. Figure 5 3
When the cassette 1 moves slightly in the direction of arrow E as shown in FIG. When the cassette 1 further moves in the E direction, the pressing piece 59 further rotates in the direction opposite to the arrow C, and the releasing protrusion 7 provided on the cassette 1 is moved by the pressing piece 59.
The protrusion 59b formed at the end of the press is pressed.
Therefore, the lid 3 of the cassette 1 is unlocked and the lid 3 is opened. With the lid 3 in the open state, the cassette 1 reaches the cassette loading completion position as shown in FIG. 5, and the cassette holder 12 stops. The cassette 1 has a rectangular parallelepiped shape, and the release protrusion 7 is provided on one side 2a of the lid 3 in the longitudinal direction. The cassette holder 12 has
The cassette 1 is inserted along an insertion direction B parallel to the longitudinal direction of the lid 3. The pressing piece 59 is provided at the lower part of the bottom surface 51 of the cassette holder 12 so as to be angularly displaceable around an axis perpendicular to the insertion direction B, as shown in FIG. Figures 4 and 5 1
In FIG. 5, the pressing piece 59 is shown in a horizontal state, and in FIG. 5, the pressing piece 59 is shown in an upright state. The protrusion 59b is the fourth
As is clear from the figure, one end of the pressing piece 59 protrudes upward and outward along the insertion direction B of the cassette holder 12 in the horizontal state. The spring 60 applies a spring force to the pressing piece 59 so that the protrusion 59b is separated from the cassette holder 12, so that in this embodiment the pressing piece 59 is in a horizontal position.
The vertical portion 62c, which is the aforementioned pressing portion, extends downward E from near the insertion position on the side of the cassette holder 12 (left side in FIGS. 51 to 54). When the cassette holder 12 is in the insertion position, the protrusion 59b is on the outside of the cassette holder 12, as shown in FIGS. 51 and 5. Cassette holder 1
2 moves downward E, the pressing part 62c contacts the pressing piece 59 and causes the pressing piece 59 to undergo an angular displacement as shown in FIG. let In this way, in FIG. 5, the protrusion 59b enters inside the cassette holder 12, thereby pressing the release protrusion 7 of the cassette 1 inserted into the cassette holder 12.

Effects As described above, according to the present invention, it is possible to reliably unlock the cassette lid when the cassette is inserted vertically. In particular, according to the present invention, the cassette holder 12 that moves up and down is provided with a pressing piece 59, and the cassette holder 12
When the pressing part 62c lowers the pressing piece 59
is angularly displaced so that the protrusion 59b enters inside the cassette holder 12 and presses the release protrusion 7 of the cassette 1 inserted into the cassette holder 12, thereby unlocking the lid 3. As a result, the excellent effect of simplifying the configuration is achieved.

[Brief explanation of the drawing]

1 is a perspective view of the cassette 1, FIG. 2 is a bottom view seen from the arrow A side in FIG. 1, FIG. 3 is a simplified perspective view of the cassette holder 12, and FIG. The enlarged view in FIG. 5 is a diagram for explaining the operating state of the pressing means 55. DESCRIPTION OF SYMBOLS 1... Cassette, 7... Release protrusion, 55... Release means, 56, 57... Bearing, 58... Support shaft, 5
9... Pressing piece, 60... Torsion spring, 62... Cassette guide member.

Claims (1)

[Claims for Utility Model Registration] A release protrusion 7 for unlocking the lid 3 is provided on one side 2a of the lid 3 in the longitudinal direction of the rectangular parallelepiped cassette 1, A cassette holder 12 is provided which is inserted along an insertion direction B parallel to the insertion direction B, and this cassette holder 12 is configured to move downward E from the insertion position of the cassette 1 to complete loading. At the lower part of the bottom surface 51 of the cassette holder 12, there is provided an outer and upper part along the insertion direction B of the cassette holder 12 in the horizontal state so that the cassette holder 12 can be placed in a horizontal state and in an upright state around an axis perpendicular to the insertion direction B. The pressing piece 59 has a protrusion 59b formed thereon.
and the protrusion 59b presses the pressing piece 59 onto the cassette holder 12.
A spring 60 applies a spring force to keep the cassette holder in a position away from the cassette holder, and a spring 60 extends downwardly E from near the insertion position on the side of the cassette holder 12, and when the cassette holder 12 is in the insertion position, the protrusion 59b 12, and the cassette holder 12 is located below E.
When the pressing piece 59 is moved to the
a pressing portion 62c that angularly displaces the protrusion 59b so that the protrusion 59b enters the inside of the cassette holder 12; A cassette loading device that presses a release protrusion 7 of a cassette 1 that is being loaded.