JPS6317097Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette used, for example, in a VTR. In particular, always make sure to lock the lid that covers the opening for pulling out the stored tape.
When loading the cassette into the recorder, the lock is first released and the lid is opened, all by moving the cassette in one direction with respect to an engaging member provided on the recorder side. This invention relates to an improved and highly reliable tape cassette.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior art and embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1a, b, and c are schematic cross-sectional views showing the loading process of a conventional cassette. In FIG. There is a lid 2 for covering, and a part 3 of a lid locking plate (not shown) is exposed on the side. Reference numeral 4 denotes a lid lock release plate that elastically supports the protrusion 4a and is a part of the cassette housing 5 (on the front side).
It is set in. Reference numeral 6 designates a plate provided on the recorder side as an engaging portion for opening the lid. 1st
Figure a shows a state immediately before the cassette 1 is loaded into the cassette housing 5. In this state, the cassette lid 2 is locked by a lock plate (not shown). When the cassette 1 is loaded into the housing 5 as shown in Fig. 1b, the exposed part 3 of the lid lock plate
is engaged and pressed by the release plate 4, and the lid inside the cassette is unlocked. Next, when the housing 5 is pushed down to the tape drive position, the lid 2
is opened by contacting the plate 6. Conventionally, the member for unlocking the lid and the member for opening the lid were separate members, resulting in a waste of parts and a waste of processes. However, in order to reduce the number of parts, it is preferable that these parts be made of the same member on the recorder side. The present invention attempts to provide a cassette lid lock structure in which the lid lock can also be released by a plate for opening the lid 2.

The present invention will be explained in detail below based on the drawings.

FIG. 2 is an external perspective view of the tape cassette according to the present invention, and FIGS. 3 a, b, and c are side sectional views for explaining the lid lock structure. 7 in Figures 2 and 3
is a cassette. Reference numeral 8 denotes a lid for opening and closing the opening of the cassette, which is rotatably supported on a shaft 9, and is always urged clockwise around the shaft 9 by a spring (not shown), that is, in the direction in which the lid closes. ing. Reference numeral 10 is a lid locking member rotatably supported by a shaft 12, and biased clockwise about the shaft 12 by a spring 11. Further, one end 10a of the lid locking member as an abutting portion protrudes from the opening of the cassette as shown in FIGS. 2 and 3. 13 is an engagement member provided on the recorder side for opening the lid.
FIG. 3a shows a state in which the cassette 7 is loaded into a cassette housing (not shown). In this state, the lid 8 is locked by its one end 8a engaging with the one end 10b of the lid locking member 10, so that it cannot be opened. As the cassette is pushed down, one end 10a of the locking member 10 comes into contact with the engaging member 13, as shown in FIG. The one end 10b of the lock member 10 and the one end 8a of the lid 8 are disengaged and the lock is released. When the cassette 7 is further pushed down, one end surface 8b of the lid 8 comes into contact with the engaging member 13, and the lid is completely opened at the tape drive preparation position as shown in FIG. 3c.

FIG. 4 is a sectional view showing another embodiment of the present invention, in which a lid locking plate 13 is provided so as to be slidable left and right, and is urged rightward in the figure by a spring 14. With this structure, as in the previous embodiment, the locking member 13 is connected to one end 1 as its abutting surface by an engaging member (not shown) for opening the lid.
When 3a is pushed to the left, it slides, releasing the lock and opening the lid.

As described in detail above, the present invention provides a locking member that comes into contact with an engaging member so that unlocking of the lid and subsequent opening of the lid can be achieved by a single engaging member provided on the recorder side. Since the part and the contact part of the lid to the engaging member are aligned in a predetermined direction along the opening of the cassette, opening and closing of the lid is ensured on the record side, and a special lock is provided for unlocking the lid. parts are no longer required, reducing the number of recorder parts.
This makes it possible to simplify the manufacturing process.

[Brief explanation of the drawing]

Figures 1a, b, and c are side sectional views and loading process diagrams of a conventional tape cassette, in which Figure 1a shows the state immediately before loading the cassette, Figure 1b shows the unlocked state, and Figure 1c shows the tape cassette in the unlocked state. It is a figure which shows a lid open state. Second
The figure is a perspective view of one embodiment of the tape cassette according to the present invention, and Figures 3a, b, and c are schematic diagrams showing the loading process of the tape cassette according to the present invention. Figure 3 showing the state
Fig. 3b shows the cassette with the housing pushed down, and Fig. 3c shows the cassette pushed down further to reach the recording preparation state. FIG. 4 is a sectional view showing another embodiment of the present invention. 1, 7...Cassette, 3, 10, 13...Lock member, 2, 8...Lid, 5...Cassette housing, 4...Lock release member, 6, 13...Engaging member, 11, 14... ...Biasing member, 10a, 13a...
...Abutment surface of the lock member, 8b...Abutment surface of the lid.

Claims (1)

[Scope of utility model registration request] an opening provided in a part of the cassette housing for pulling out the stored tape; and an opening that can be opened and closed;
A lid that opens when an engaging member on the recorder side comes into contact with the abutting portion, and a lid that opens by engaging with a part of the lid, and a lid that opens when the engaging member on the recorder side comes into contact with the abutting portion; a locking member that releases the engagement with the lid when the member comes into contact with the housing; A tape cassette characterized in that the tape cassettes are aligned in the direction of movement immediately before loading is completed.