JPH0516673Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a cassette mounting device that is most suitable for application to, for example, a front-loading type cassette-type VCR. Concerning things with doors.

[Summary of the idea]

In the present invention, the cassette inserted through the cassette insertion opening is pushed open to open the opening/closing door of the cassette insertion opening, the cassette is inserted into the cassette holder in the cassette insertion opening, and the inserted cassette is inserted into the cassette holder. In a cassette loading device configured to allow the cassette to be loaded into the cassette loading position using By configuring the cassette to be in a horizontal state parallel to the cassette, it is possible to improve the ease of inserting the cassette into the cassette holder from the cassette insertion opening.

[Conventional technology]

The inventor of this invention has written about the cassette mounting device for a front-loading cassette-type VCR.
I first devised something like the one shown in Figure 5. This cassette loading device hangs almost vertically from a cassette insertion opening 42 provided on a front panel 41 and a rotation fulcrum 43 provided at the upper end, as shown by a dashed line, and closes the cassette insertion opening 42. Between the closed door position and the open position where the door is rotated about the rotation fulcrum 43 upward in the direction of arrow a, which is the cassette insertion direction, that is, as shown by the solid line in the direction of arrow b, and comes into contact with the stopper 44. A cassette 47 is inserted from the cassette insertion opening 42, and a cassette holder 46 is configured to be able to reciprocate between a cassette insertion position and a cassette mounting position. As shown by the solid line, the opening/closing door 45 is pushed open to the opening position in the direction of arrow b, and the cassette 47 is inserted into the cassette holder 46 in the cassette insertion position in the direction of arrow a.
The inserted cassette 47
The cassette holder 46 allows the cassette to be mounted at the cassette mounting position.

[Problem that the invention attempts to solve]

By the way, in this cassette mounting device, as shown by the solid line, the opening/closing door 45, which has been pushed open to the open position and comes into contact with the stopper 44, is tilted downward at an angle θ ₁ with respect to the horizontal reference plane P ₁ . The opening/closing door 45 guides the upper side of the cassette 47 to be inserted.
can be smoothly inserted under a cassette pressure roller 48 provided above the cassette holder 46. The cassette pressing roller 48 is biased downward by a spring, and elastically presses the cassette 47 inserted into the cassette holder 46 onto the bottom plate 46a from above, and then presses the cassette 47 into the cassette holder 46. Therefore, the cassette 47 mounted at the cassette mounting position is elastically pressed from above onto a plurality of positioning pins to position it.

However, when the opening/closing door 45 is tilted downward at an angle θ ₁ in the open position, the front end of the cassette 47 (the end in the direction of arrow a) is lifted, as shown by the solid line in FIG. If you try to insert the cassette 47 by tilting it upward at an angle θ ₂ with respect to the horizontal reference plane P ₁ in this way, the cassette 4
7 comes into contact with the opening/closing door 45 at an extremely large angle of θ ₁ +θ ₂ . As a result, the opening/closing door 45
Therefore, the cassette 47 cannot be guided smoothly, and the ease of inserting the cassette 47 becomes very poor.
Furthermore, in the cassette loading device shown in FIG. 5 without the stopper 44, the opening position of the opening/closing door 45 is not regulated, which not only makes it even worse to insert the cassette 47, but also prevents the opening/closing door 45 or the cassette 47 from being inserted.
Problems such as breakage are also likely to occur. In particular, in a cassette loading device that allows the use of two types of cassettes, large and small, the cassette holder 4
A pair of left and right guide rails 49 are provided on the bottom plate _46a of the small cassette 47 for positioning the small cassette. , the cassette 47 rides on the guide rail 49, making it impossible to position the cassette 47 using the guide rail 49.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cassette mounting device that can improve the ease of inserting a cassette into a cassette holder from a cassette insertion opening.

[Means for solving problems]

A stopper for regulating the opening position of the opening/closing door that is pushed open by a cassette inserted from the cassette insertion slot and a guide surface protruding from the front surface of the opening/closing door are provided, and the opening/closing door is in the opening position. When the cassette holder is rotated, its position is regulated by the stopper so that the guide surface and the bottom plate of the cassette holder are substantially parallel and the distance therebetween is approximately equal to the height of the cassette to be inserted. It is composed of

[Effect]

According to the present invention, the opening/closing door is pushed open to the open position by the cassette inserted from the cassette insertion slot, and when the cassette is inserted into the cassette holder, the cassette is positioned horizontally parallel to the bottom plate of the cassette holder. Due to the cassette guide surface of the opening/closing door,
The cassette can be guided smoothly in the horizontal direction. Therefore, the cassette can be smoothly and horizontally inserted onto the bottom plate inside the cassette holder while pushing open the opening/closing door with the cassette.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to a cassette mounting device for a front loading type cassette type VTR which allows two types of cassettes of different sizes to be used will be described with reference to the drawings.

First, as shown in FIGS. 3A to 4, a rectangular cassette insertion opening 2 is provided on the front panel 1 of the cassette loading device, and the width of this cassette insertion opening 2 is set so that the cassette can be selectively inserted. It corresponds to the width of the large cassette 3 of the large and small cassettes 3 and 4.

The cassette holder 5 holding the large and small cassettes 3 and 4 selectively inserted from the cassette insertion opening 2 moves three guide rollers 6 each attached to the left and right side plates 5a onto a chassis (not shown). A pair of left and right holder support plates 7 are fixed perpendicularly to the
The guide grooves 8 are loosely fitted and supported in three approximately L-shaped guide grooves 8 provided in each of the guide grooves 8. The cassette holder 5 guided by these guide rollers 6 and guide grooves 8 is driven by a cassette holder drive mechanism (not shown), and is inserted into the cassette insertion opening 2 of the front panel 1 as shown in FIG. 3A. A cassette insertion position where the large and small cassettes 3 and 4 are selectively inserted facing each other, and a cassette mounting position where the inserted large and small cassettes 3 and 4 are mounted on a pair of left and right reel stands 9 as shown in FIG. 3B. It is configured to reciprocate in the directions of arrows c and d along a substantially L-shaped movement locus between the two. The pair of left and right reel stands 9 are mounted on a pair of left and right moving stands (not shown) that are reciprocated along a pair of left and right guide rails (not shown) that are horizontally mounted on a chassis (not shown). It is attached integrally with a pair of left and right reel stand motors 10. Further, a cassette pressure roller 11 is installed horizontally above the cassette holder 5 between the left and right side plates 5a thereof.

At the top of the horizontal bottom plate 5b of the cassette holder 5, a pair of left and right guide rails 12 are provided parallel to each other and distributed left and right with respect to the lateral center of the bottom plate 5b. and,
When the small cassette 4 is selectively inserted horizontally from the cassette insertion opening 2 into the cassette holder 5 which has been moved back to the cassette insertion position shown in FIG. 3A, the small cassette 4 is inserted between both guide rails 12. Positioned. On the other hand, similarly, the cassette holder 5
When the large cassette 3 is selectively inserted into the large cassette 3, the large cassette 3 is attached to both guide rails 12 by a pair of left and right guide grooves (not shown) provided on the lower surface of the large cassette 3.
is configured to be inserted relative to.

An opening/closing door 13 is provided inside the front panel 1 to open and close the cassette insertion slot 2 from inside. This opening/closing door 13 is rotatably attached to both the left and right holder support plates 7 by a rotation fulcrum 14 which is a fulcrum shaft provided at the upper end thereof, and this opening/closing door 13 is shown in FIG. As shown in FIG. 3A, there is a closing position where the door is suspended almost perpendicularly from the rotational fulcrum 14 and the cassette insertion slot 2 is closed, and a position in which the cassette is inserted in the direction of arrow a centered on the rotational fulcrum 14 as shown by the solid line in FIG. 3A. It is configured to be freely rotatable in the directions of arrows b and e between an open position in which it is rotated upward, that is, in the direction of arrow b, and comes into contact with the stopper 15. Note that when the cassette holder 5 is returned to the cassette insertion position as shown in FIG. ), but is urged to rotate in the direction of arrow e toward the door closing position by a closing urging spring (not shown). And the 3rd A
The door is opened and closed by an opening/closing door drive mechanism (not shown) driven by a cassette holder 5 that reciprocates in the directions of arrows c and d between the cassette insertion position shown in the figure and the cassette mounting position shown in Fig. 3B. Door 13 is arrow b,
It is configured to be driven to open and close in the e direction.

Next, as shown in FIGS. 1 to 4, a pair of left and right cassette guide surfaces 16 are provided on the front surface 13a facing the cassette insertion opening 2 of the opening/closing door 13 in the closed position shown by the dashed line in FIG. is provided. In addition,
Both of these cassette guide surfaces 16 are inclined at an angle θ ₃ with respect to a vertical reference plane P ₂ including the front surface 13a of the opening/closing door 13, and this angle θ ₃ is defined by the opening/closing door 13 as shown by the solid line in FIG. The angle is the same as the downward inclination angle θ ₃ of the opening/closing door 13 with respect to the horizontal reference plane P ₁ when the opening/closing door 13 is rotated in the direction of arrow b to the opening position and comes into contact with the stopper 15 . Therefore, this angle θ ₃
is the same as the angle θ ₁ explained in FIG.

As shown in FIG. 2, the opening/closing door 13 is molded from synthetic resin, and the pair of left and right cassette guide surfaces 16 are the front surfaces of the pair of left and right reinforcing ribs 17 integrally molded on the opening/closing door 13. is formed. Therefore, these pair of left and right cassette guide surfaces 1
6 increases the strength of the opening/closing door 13.
Further, as shown in FIG. 4, the pair of left and right cassette guide surfaces 16 are arranged within the inner width _l1 of the pair of left and right guide rails 12 on the bottom plate 5b of the cassette holder 5.

Next, the operation of the cassette loading device constructed as above will be explained.

First, as shown by the solid line in FIG. 1, large and small cassettes 3 and 4 are selectively inserted from the cassette insertion slot 2 in the direction of arrow a, and the opening/closing door 13 is moved from the closed position to the open position against the spring by arrow b. When pushed open in the direction and brought into contact with the stopper 15, both cassette guide surfaces 16
is positioned in a horizontal state parallel to the bottom plate 5a of the cassette holder 5. Therefore, as shown by the dashed line and the solid line in FIG. Even if an attempt is made to insert the cassettes, the large and small cassettes 3 and 4 can be smoothly guided in the horizontal direction by the cassette guide surfaces 16. Therefore, 2 in Figure 1
As shown in the dotted line and in FIG. 3A, the large and small cassettes 3 and 4 can be smoothly inserted under the cassette pressure roller 11 while pushing open the opening/closing door 13 in the direction of arrow b. Thus, the large and small cassettes 3 and 4 can be smoothly and horizontally inserted onto the bottom plate 5b of the cassette holder 5.

As a result, it is possible to prevent the small cassette 4 from accidentally riding on the guide rail 12 on the bottom plate 5b of the cassette holder 5, and to move the small cassette 4 onto the pair of left and right guide rails 1.
The small cassette 4 can be accurately positioned by smoothly inserting the small cassette 4 between the two.

Next, after selectively inserting the large and small cassettes 3 and 4, the cassette holder 5 is moved in the direction of arrow c from the cassette insertion position of FIG. 3A to the cassette installation position of FIG. 3B, and the large and small cassettes 3 and 4 are inserted. is selectively installed at the cassette installation position, but at this time,
As shown in Figure 3B, by the opening/closing door drive mechanism,
The opening/closing door 13 is rotated in the direction of arrow e from the open position to the closed position, and the cassette insertion slot 2 is closed.

Note that the large and small cassettes 3 and 4 are placed in the cassette holder 5.
3A from the cassette installation position in Figure 3B.
When moving the cassette back to the cassette insertion position shown in the figure in the direction of the arrow d, the opening/closing door drive mechanism rotates the opening/closing door 13 to the opening position in the direction of the arrow b, and then the large and small cassettes 3 and 4 are inserted into the cassette. When the large and small cassettes 3 and 4 are moved back to the insertion slot 2 and then pulled out from the cassette insertion slot 2 in the direction of the arrow f, the opening/closing door 13 is rotated by the spring in the direction of the arrow e to the closed position. It is something that

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various effective changes can be made based on the technical idea of the present invention.

Further, the present invention is not limited to a cassette mounting device for a cassette type VTR, but can be applied to various cassette mounting devices for various other cassette type recording/reproducing devices, information processing devices, etc.

[Effect of idea]

According to the present invention, the opening/closing door is pushed open to the open position by the cassette inserted from the cassette insertion slot, and when the cassette is inserted into the cassette holder, the opening position of the opening/closing door is adjusted by the stopper. The guide surface of the opening/closing door and the bottom plate of the cassette holder are parallel to each other, and the distance therebetween is approximately equal to the height of the cassette to be inserted. can be inserted almost parallel to the bottom plate of the cassette holder,
It is possible to improve the ease of inserting the cassette into the cassette holder from the cassette insertion opening.

Since the vertical height inside the cassette holder is approximately equal to the height of the cassette due to the guide surface of the opening/closing door, the cassette loading device that allows the use of two types of cassettes, especially small and small, is The small cassette can be accurately positioned by smoothly inserting the cassette between a pair of left and right guide rails provided on the bottom plate of the cassette holder.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a side view of the main part, Figure 2 is a perspective view of the main part, and Figures 3A and 3B are FIG. 4 is a side view illustrating the cassette mounting operation, and FIG. 4 is an exploded perspective view of the entire device. FIG. 5 is a side view showing a reference example. In addition, in the symbols used in the drawings, 1...Front panel, 2...Cassette insertion slot, 3...Large cassette, 4...Small cassette, 5...Cassette holder,
5b... Bottom plate, 12... Guide rail, 13...
These are an opening/closing door, 14...a rotation fulcrum, 15...a stopper, and 16...a cassette guide surface.

Claims (1)

[Scope of Claim for Utility Model Registration] A cassette insertion slot provided on the front panel, an opening/closing door that hangs down almost vertically from a rotation fulcrum provided at the upper end of the opening and closing door for closing the cassette insertion slot;
The cassette holder is configured to be able to reciprocate between a cassette insertion position and a cassette mounting position, and the cassette comes into contact with the front surface of the opening/closing door, and the cassette is inserted from the cassette insertion opening while pushing the opening/closing door open. , in the cassette loading device configured to be placed on the cassette holder at the cassette insertion position and then positioned at the cassette loading position, the opening/closing opening being pushed open by a cassette inserted from the cassette insertion opening; A stopper for regulating the opening position of the door and a guide surface protruding from the front of the opening/closing door are provided, and when the opening/closing door is rotated to the opening position,
The position of the cassette holder is regulated by the stopper, and the guide surface and the bottom plate of the cassette holder are substantially parallel, and the distance therebetween is substantially equal to the height of the cassette to be inserted. Cassette loading device.