JP2513041Y2 - Cassette loading device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device for a video tape recorder (VTR) or the like.

[0002]

2. Description of the Related Art A conventional cassette loading device is shown in FIGS.
0 is shown. In the figure, a cassette tray 1 is mounted on both sides and one end thereof is rotatably supported by a side plate 2 and a pair of upper levers 3 and lower levers 4 are arranged so that the cassette tray 1 can be lifted and lowered. Is pivotally supported at the other end. Further, the left and right upper levers 3 are connected left and right by a connecting rod 3a so that the left and right movements are synchronized when the cassette tray 1 moves up and down. A cassette holding lever 5 is rotatably attached to the cassette tray 1, and a spring 6 hung between one end of the cassette holding lever 5 and one end of the upper lever 3 urges the cassette tray 1 in the upward direction. In addition, cassette 7 is placed on cassette tray 1.
When the cassette pressing lever 10 is mounted, the cassette pressing portion 10 formed on the cassette pressing lever 5 moves the cassette 7 by the spring 6 to the cassette tray 1 at the mounting position (up position) and to the chassis 8 at the playing position (down position). It is pressed against the cassette positioning pin 9 provided on the.

When the cassette 7 is mounted on the cassette tray 1, the protruding piece 1 provided on the cassette tray 1
1 enters a groove 12 formed in the bottom surface of the cassette 7, contacts a lock lever 14 that keeps the cassette lid 13 from opening, and unlocks the cassette lid 13. After that, when the cassette tray 1 descends from the mounting position to the playing position, the lid opening pin 15 causes the cassette lid 13 to move.
, And the cassette lid 13 is opened. A regulation protrusion 16 is installed on the upper end of the upper lever 3, and even if the cassette tries to get over the cassette stopper 17 as shown in FIG. Regulates directional movement,
It prevents the cassette 7 from getting over the cassette stopper 17.

Further, when the cassette tray 1 is in the playing position as shown in FIGS. 7 and 9, the regulation protrusion 16 is the mounting position by the rotation of the upper lever 2 and the position of the cassette 7 and the regulation protrusion 16. The relationship is changed, and the cassette 7 is installed at a position where it does not come into contact with the upper surface of the cassette 7 and the gap between the cassette 7 and the restriction protrusion 16 becomes large, and the cassette 7 is pressed against the cassette positioning pin 9 on the chassis 8 by the cassette pressing lever 5. Has been. A gap is provided between the cassette 7 and the cassette tray 1.

[0005]

In the above prior art, when the frictional resistance between the lid opening pin 15 and the cassette lid 13 is large at the position shown in FIG. 8, the cassette 7 is lifted from the cassette tray 1 and the lock lever is released. 14 lands on the protruding piece 11, and the cassette tray 1 remains as it is.
If the cassette 7 is lowered to the playing position, the cassette 7 is not properly attached to the chassis 8 and may cause winding failure.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in a cassette mounting apparatus for guiding a cassette from a mounting position to a playing position by raising and lowering the cassette tray, the cassette tray can be raised and lowered by a link. The guide groove formed on the upper end of the link and including the regulation portion and the regulation release portion, the cassette holding lever provided on the upper portion of the cassette tray for regulating the position of the cassette at a predetermined position, and the cassette that engages with the guide groove. It consists of a regulation protrusion formed on the holding lever, and the regulation protrusion engages with the regulation portion of the guide groove from the mounting position to the playing position, and the cassette holding lever regulates the position of the cassette to a predetermined position. The restriction protrusion is engaged with the restriction release portion of the guide groove to relax the position restriction of the cassette.

[0007]

According to the present invention, the cassette lid is opened without lifting the cassette, the cassette is accurately lowered to the playing position, and the cassette is properly mounted on the chassis.

[0008]

Embodiments of the present invention will be described with reference to the drawings. Further, the same components are denoted by the same reference numerals, and description thereof will be omitted. FIG.
FIG. 3 is a side view of the cassette at the mounting position, and the cassette protrusion lever 5 shown in detail in FIG. 2 is engaged with a guide groove 19 formed at the upper end of the upper lever 3 so that the cassette protrusion is formed. The position of the cassette 7 is regulated by the cassette pressing portion 10 so that the cassette 7 does not rise. Here, the guide groove 19 formed in the upper lever 3 has a regulation portion 20 and a regulation release portion 21 as shown in FIG.
The restriction portion 20 is formed to have the same radius about the upper end mounting portion 3b of the upper lever 3.

Next, when the cassette tray 1 descends to the position shown in FIG. 4, the cassette lid 13 is opened by the lid opening pin 15. Even if the friction between the lid opening pin 15 and the cassette lid 13 is large, the cassette is opened. Presser lever 5
Since the position of the cassette 7 is regulated by, the cassette 7 does not float.

When the cassette tray 1 is lowered to the playing position shown in FIGS. 5 and 6, the engaging projection 18 engages with the restriction releasing portion 21 of the guide groove, and the position restriction by the cassette pressing lever 5 is released, and the cassette 7 is released. A gap can be provided between the cassette tray 1 and the cassette tray 1 to allow a margin for overstroke.

[0011]

As described above, according to the present invention, since the position restriction of the cassette by the cassette holding lever is released at the playing position, the cassette is prevented from rising even if the friction between the lid opening pin and the cassette lid is large. By providing a gap between the cassette and the cassette tray, it is possible to allow a margin for overstroke, and the cassette can be properly attached to the chassis.

[Brief description of drawings]

FIG. 1 is a side view of the present invention in a mounting position.

FIG. 2 is a detailed view of a cassette pressing lever of the present invention.

FIG. 3 is a view for explaining a guide groove of the present invention.

FIG. 4 is a side view of the present invention when the cassette lid is opened.

FIG. 5 is a side view of the present invention in a playing position.

FIG. 6 is a top view of the present invention in a playing position.

FIG. 7 is a side view in a mounting position according to a conventional technique.

FIG. 8 is a side view of a prior art cassette lid when opened.

FIG. 9 is a side view of a conventional technique in a playing position.

FIG. 10 is a top view in a playing position according to a conventional technique.

[Explanation of symbols]

 1 Cassette Tray 3 Upper Link 4 Lower Link 5 Cassette Holding Lever 7 Cassette 18 Restriction Protrusion 19 Guide Groove 20 Restriction Part 21 Restriction Release Part

Claims (1)

(57) [Scope of utility model registration request] 1. A cassette mounting device for guiding a cassette from a mounting position to a playing position by raising and lowering a cassette tray, wherein the cassette tray is vertically movable by a link, and is formed at an upper end of the link and a regulation portion and a regulation release. A guide groove consisting of a section, a cassette holding lever provided on the upper part of the cassette tray for positionally regulating the cassette at a predetermined position, and a restricting protrusion engaged with the guide groove and formed on the cassette pressing lever. From the mounting position to the playing position, the restricting protrusion engages with the restricting portion of the guide groove and the cassette pressing lever restricts the position of the cassette to a predetermined position. A cassette mounting device, characterized in that the regulation of a cassette position is relaxed by engaging with a regulation releasing portion.