JPH035004Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a cassette holder device installed in a magnetic recording/reproducing apparatus such as a VTR using a tape cassette.

The conventional VTR cassette holder device, as shown in FIG.
Arms 6,
6 is provided protrudingly, and links 7, 7 are connected to the arms 6, 6 by
A cassette holder 3 is supported on a chassis 11 so as to be movable up and down by combining the cassette holders 3 into a shape.
Load the tape cassette 9 through the cassette insertion slot 33 opened at
It is opposed to cylinder 1.

However, as VTRs have become smaller in recent years, it has become necessary to place the cylinder 1 and cassette holder 3 as close as possible. Since the cylinder 1 and the shaft 5 are provided on the 1 side, there is a problem that the cylinder 1 and the shaft 5 approach each other and interfere with each other when the cassette is installed (as shown by the two-dot chain line in FIG. 3). Conventionally, this problem was dealt with by forming a notch 50 in the shaft 5 as shown in FIG. 4, but this method had a limit to miniaturization. However, in order to ensure the strength of the shaft, it was necessary to use special steel, which resulted in poor workability of the shaft and problems in promoting weight reduction.

Also, the cylinder side of the cassette holder 3 is
It is supported by the arm 6 and the link 7, and has a structure in which the tip extends forward and protrudes, so that when inserting the cassette, one of the side plates 32 or the cassette insertion slot 3
When the end of the cassette holder 3 is pushed, the cassette holder 3 easily tilts using the tip of the link 7 as a fulcrum, which causes a problem in that the horizontal posture of the cassette holder 3 is impaired.

(Objective) An object of the present invention is to provide a cassette holder device having a structure in which even if a cylinder and a cassette holder are provided close to each other, the two do not come into contact with each other when the holder is mounted.

(Structure) The present invention is based on the side plates 32, 3 of the cassette holder 3.
Arms 6, 6 are protruded at right angles from both ends of a shaft rotatably installed on the shaft 2 to form a U-shaped frame 8, and links 7, 7 are attached to the center of the arms 6, 6 at right angles.
The arms 6, 6 and one end of the links 7, 7 are pivotally supported on the chassis 11, and the other is slidably engaged with the chassis. , side plate 32 of cassette holder 3,
32 includes the base ends of the arms 6, 6 and the link 7,
In the cassette holder device, the cassette holder 3 is supported on the chassis 11 so that the cassette holder 3 can be moved up and down on the chassis 11 by pivotally supporting one of the other ends of the cassette holder 7 and slidably engaging the other end with the cassette holder. The side plates 32, 32 are provided on both sides of the cassette insertion slot 33, and both ends of the shaft 51 are
At the ends of the side plates 32, 32 of the cassette holder 3 on the cassette insertion opening 33 side, and at the ends of the cassette insertion opening 3
3 and is pivotally supported through the upper position of both side plates 32,
It is characterized in that the base end portions of the arms 6, 6 are fixed to both ends of the shaft protruding outward from the shaft 32, respectively.

(Function) The arms 6, 6 and links 7, 7 of the U-shaped frame 8 are
They rotate relative to each other in the opening direction or closing direction about the intersection point, and at the same time slide along the side plates 32, 32 of the cassette holder and the chassis 11,
Or it swings around a pivot point. At this time, the pair of left and right links and arms are reliably interlocked by the connection of the shaft 51, so that the cassette holder 3 moves up and down relative to the chassis 11, with the left and right sides always kept horizontal. Incidentally, since the shaft 51 is disposed above the cassette insertion opening 33, it does not interfere with the insertion of the cassette.

(Special effect) The shaft 51 is provided on the cassette insertion opening 33 side of the cassette holder 3, and there is no obstacle to the cylinder on the cylinder 1 side of the cassette holder 3.
Even if they are placed close to each other, they will not come into contact with each other and interfere with each other when the cassette holder is attached.

The present invention will be described in detail below based on the illustrated embodiments.

1 and 2 show an example in which the cassette holder device according to the present invention is implemented in a VTR. FIG. 1 shows the cassette holder 3 removed from the chassis 11, and FIG. 2 shows the cassette holder 3 installed. The tape cassette (not shown) is inserted into the cassette insertion slot 3 of the cassette holder 3.
Loaded from 3.

Holder support plates 2, 2 for holding the cassette holder 3 from both sides are projectingly provided on the chassis 11, and a long hole-shaped guide groove 20 is provided on the cylinder 1 side of the support plates.

A shaft 51 passes through and is pivotally supported at the upper ends of the side plates 32, 32 of the cassette holder 3 on the side of the cassette insertion port 33, and arms 6, 6 are protruded from both ends of the shaft 51, , 60 to form a U-shaped frame 8. The tips of the arms 6, 6 are equipped with guide rollers 61, 61, and the guide grooves 20, 2 of the holder support plates 2, 2 are installed.
20 so as to be slidable.

Links 7, 7 are pivotally supported at the center portions of the arms 6, 6 by pivot pins 64, 64, respectively, and guide rollers 7 are provided at the upper ends of the links 7, 7.
0,70, and are slidably fitted into long hole-shaped guide grooves 31, 31 formed on the cylinder 1 side of the side plates 32, 32 of the cassette holder 3,
The other end is pivotally supported to the holder support plates 2, 2 on the chassis by pins 71, 71.

A spring locking piece 65 is protruded from the tip of one arm 6, and a coil spring 4 is interposed between the locking piece and the holder support plate 2, and the U-shaped frame 8 and the links 7, 7 in the opening direction, that is, the cassette holder 3
is biased in the direction of raising it.

Further, a locking pawl 34 is protruded from one side plate 32 of the cassette holder 3, and the locking pawl can be engaged with and disengaged from a pawl receiver (not shown) provided on the chassis 11 when the cassette holder is attached. the cassette holder 3 in the installed position.

When the cassette holder 3 is pressed downward and lowered from the state shown in FIG. 1, the U-shaped frame 8 and the links 7, 7 move in the closing direction against the coil spring 4. At this time, the guide rollers 61 and 70 installed on the U-shaped frame and the link are connected to the respective guide grooves 2.
0,31. With the movement of the U-shaped frame and the link guided by the guide groove, the cassette holder 3 moves approximately in parallel, and just before mounting, the cassette holder 3 descends vertically and is placed on the chassis 11 as shown in FIG. At this time, the locking pawl 34 engages with the pawl receiving portion to hold the cassette holder 3 in the mounting position.

When the engagement of the locking pawl 34 is released from the state shown in FIG. automatically returns to the state shown in .

As shown in FIG. 2, in the mounting position, the cassette holder 3 accommodates a portion of the cylinder 1 in the opening on the cylinder side. If the conventional structure is adopted and a U-shaped frame shaft is provided on the cylinder side of the cassette holder, the shaft and cylinder will come into contact with and interfere with each other, as is clear from the figure. On the other hand, in this embodiment, since there is no obstacle on the cylinder side of the cassette holder 3, the arrangement as shown in FIGS. 1 and 2 is possible. Therefore, the shaft 51 does not require a notch as shown in FIG. 4, and the shaft can be made of a lightweight, low-strength material such as plastic. Therefore, the present invention is effective in reducing the size and weight of VTRs. Furthermore, even if the side plate 32 or the end of the insertion opening 33 is pushed during insertion of the cassette, the end of the shaft 51 is only pushed down directly, and no lever action occurs as in the conventional case shown in FIG. 3. Therefore, the pair of arms 6, 6 rotate together with the shaft 51, and the holder 3 can be moved up and down while maintaining its horizontal position.

In this embodiment, the guide grooves of the holder support plate and the holder side plate are provided on the cylinder side, but other arrangements are also possible. Furthermore, by changing the shape of the guide groove, it is possible to change the vertical position of the cassette holder in various ways. However, it is preferable that the cassette holder assumes a horizontal position immediately before mounting, then descends vertically, and assumes a position with the cassette insertion opening slightly upward at the rising end.

[Brief explanation of the drawing]

1 and 2 are a perspective view and a side view of a cassette holder device according to the present invention, FIG. 3 is a perspective view of a conventional cassette holder device, and FIG. 4 shows a problematic part of the conventional cassette holder device. FIG. 11... Chassis, 3... Cassette holder,
32... Holder side plate, 33... Cassette insertion slot, 51... Shaft, 6... Arm, 7... Link, 8... U-shaped frame.

Claims (1)

[Scope of utility model registration request] Side plates 32, 32 are provided protrudingly on both sides of the cassette insertion opening 33 of the cassette holder 3, and the side plates 3
2, 32 and the chassis 11, the arms 6, 6 and the links 7, 7 are combined in an X shape to form an intersection point 64.
In the case where the cassette holder 3 is supported so as to be movable up and down on the chassis by providing a link mechanism which is pivotally fixed to the Rotate freely through the shaft 51 of the
Both ends of the arm 6 extend outwardly through the side plates 32, 32, respectively, and the upper end of the arm 6 is fixed to the shaft end projecting outwardly from the side plates 32, thereby forming an integrated U-shaped frame 8. The lower end of the link 7 is pivotally fixed to the chassis, the lower end of the arm 6 and the upper end of the link 7 are
The cassette holder 3 is slidably engaged with the chassis 11 and the cassette holder 3, respectively.
A cassette holder device characterized by being able to move up and down and supporting the cassette in a horizontal position.