JPH0441479Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is most suitable for application to a cassette mounting device for a cassette type video tape recorder, for example, and is suitable for application to a cassette mounting device for a cassette type video tape recorder. This invention relates to a cassette mounting device in which a cassette is inserted into a cassette holder by engaging a convex guide provided on the top surface of a bottom plate of the cassette holder.

[Summary of the idea]

The present invention is a cassette mounting system in which a guide groove provided on the bottom surface of the cassette is engaged with a convex guide provided on the top surface of the bottom plate of the cassette holder, and the cassette is inserted into the cassette holder. In the device, the convex guide is rotatably supported on the bottom plate, and normally the convex guide projects almost horizontally from the top surface of the bottom plate, and when the front end side of the convex guide is pressed, the convex guide By rotating the front end of the guide downward from the top surface of the bottom plate, even if the front end of the cassette interferes with the front end of the convex guide when inserting the cassette into the cassette holder diagonally from above, The cassette can be inserted into the cassette holder.

[Conventional technology]

First, a conventional example of a cassette mounting device for a cassette type video tape recorder will be explained with reference to FIG.

The cassette holder 30 is configured to be able to freely reciprocate between a cassette insertion position (not shown) where a cassette 31 is inserted and a cassette mounting position (not shown) where the inserted cassette 31 is mounted on a reel stand. There is. Then, with the cassette holder 30 moved back to the cassette insertion position, the front panel 3
The cassette 31 is horizontally inserted into the cassette holder 30 from the cassette insertion opening 33 provided at the cassette 2 in the direction of the arrow a as shown by the dashed line. On this occasion,
A guide groove 34 provided along the front-rear direction at the center of the bottom surface 31a of the cassette 31 is connected to a convex guide 36 provided along the cassette insertion direction (front-rear direction) at the center of the upper surface of the bottom plate 35 of the cassette holder 30.
cassette holder 30.
The cassette 31 is positioned laterally within the cassette.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional example, when the cassette 31 is inserted into the cassette holder 30 diagonally from above (in the direction of arrow b) as shown by the solid line, the lower end 37a of the front cover 37 attached to the front end side of the cassette 31 is inserted. There was a problem that the cassette 31 interfered with the front end side 36a of the convex guide 36, making it difficult to insert the cassette 31 into the cassette holder 30.

In this case, place the cassette 31 in the cassette holder 3.
There is no problem if the cassette 31 is always inserted horizontally into the slot, but generally the cassette 31 is not inserted very carefully, and there are gaps above and below the cassette insertion slot 33, so it is difficult to insert the cassette 31. It is often inserted diagonally from above. If the cassette 31 and the convex guide 36 interfere with each other, the cassette 31 must be reinserted horizontally, making the insertion operation extremely troublesome. Also, if you forcefully insert the cassette 31,
There was also an accident in which the lower end 37a of the front cover 37 was damaged.

Therefore, the present invention allows the cassette to be inserted into the cassette holder even if the front end of the cassette interferes with the front end of the convex guide when the cassette is inserted diagonally from above into the cassette holder. be.

[Means for solving problems]

The present invention provides the above-mentioned cassette mounting device, in which the convex guide is pivotally supported on the bottom plate by a support shaft so as to be rotatable along the cassette insertion direction, and the front end side of the convex guide is configured to be rotatable along the cassette insertion direction. A spring that biases the convex guide to rotate upward and a stopper that restricts the rotation of the convex guide are provided, and the convex guide is projected substantially horizontally from the upper surface of the bottom plate by the spring and the stopper. and when the front end side of the convex guide is pressed, the front end side of the convex guide is rotated downward from the upper surface of the bottom plate against the spring.

[Effect]

In the present invention, when the cassette is inserted diagonally from above into the cassette holder, even if the front end of the cassette interferes with the front end of the convex guide, when the front end of the convex guide is pressed, the front end It is rotated downward from the top surface of the bottom plate and released. Therefore, when inserting the cassette into the cassette holder, the convex guide does not interfere with the insertion of the cassette.

〔Example〕

An embodiment in which the present invention is applied to a cassette mounting device for a cassette type video tape recorder will be described below with reference to FIGS. 1 to 4.

First, as shown in FIGS. 3 and 4, the cassette holder 1 is formed into a substantially U-shaped cross section by a bottom plate 2 and a pair of left and right side plates 3, and the upper parts of both side plates 3 are connected by a top plate 4. has been done. Three guide rollers 5 are attached to the outside of both side plates 3, respectively. Next, a pair of left and right lifting guide plates 7 fixed vertically on the chassis 6 on both the left and right sides of the cassette holder 1 have L-shaped 3
Two guide grooves 8 are provided. Each guide roller 5 of the cassette holder 1 is connected to each guide groove 8.
are respectively engaged with the cassette holder 1.
is guided by each guide groove 8 and can freely reciprocate along an L-shaped movement trajectory shown by arrow c between the cassette insertion position shown by the solid line in FIG. 3 and the cassette mounting position shown by the dashed line. It is configured.

Next, as shown in FIGS. 1 and 2, a long hole 10 is formed in the center of the bottom plate 2 of the cassette holder 1 along the cassette insertion direction (front-back direction). A convex guide 11 is rotatably attached to. That is, a pair of support shafts 12 are provided approximately at the center of the convex guide 11 at right angles to its longitudinal direction, and both of these support shafts 12 are bent downward on both the left and right sides of the elongated hole 10. It is pivotally supported by a pair of projecting pieces 13. Further, a pair of stoppers 14 made of pins are provided on the front end side 11a of the convex guide 11 at right angles to the longitudinal direction thereof. A pair of leaf springs 15 are fixed to the left and right sides of the elongated hole 10 on the lower surface of the bottom plate 2 with screws 16, etc., and both stoppers 14 are pressed from below by these leaf springs 15. Therefore, the front end side 11 of the convex guide 11 is
The convex guide 11 is rotated upward in the direction of the arrow d, and both stoppers 14 are brought into contact with the lower surface of the bottom plate 2, so that the convex guide 11 is rotated upward in the direction of the arrow d. It protrudes almost horizontally from the top surface. And the front end side 11a of the convex guide 11
When is pressed, the convex guide 11 is rotated in the direction of arrow e as shown by the dashed line, and the front end side 1
1a is configured to be rotated downward from the upper surface of the bottom plate 2. Note that the end surface of the front end side 11a of the convex guide 11 is a vertical surface.

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

First, as shown by the solid line in FIG. 3, with the cassette holder 1 moved back to the cassette insertion position, the cassette 20 is inserted into the cassette holder 1 from the cassette insertion opening 19 provided in the front panel 18 in the direction of arrow a. inserted horizontally. Note that 21 is a pair of upper and lower lids that open and close the cassette insertion port 19.
At this time, the convex guide 11 of the bottom plate 2 of the cassette holder 1 is projected almost horizontally from the upper surface of the bottom plate 2 by both leaf springs 15 and both stoppers 14. And the bottom 2 of the cassette 20
The cassette 20 is positioned in the left-right direction within the cassette holder 1 by engaging the convex guide 11 with a guide groove 22 provided along the front-rear direction at the center of the cassette holder 1. When the cassette 20 is completely inserted into the cassette holder 1, the front end 20b of the cassette 20 comes into contact with the stopper 23 provided at the rear end of the bottom plate 2, and the insertion position of the cassette 20 is fixed. is regulated.

Next, when the insertion of the cassette 20 into the cassette holder 1 is completed as described above, the cassette holder 1 is pulled horizontally to the rear of the cassette insertion opening 19 by the cassette holder reciprocating drive mechanism (not shown). Thereafter, the cassette holder 1 is moved forward in the direction of arrow c along an L-shaped movement locus that descends vertically downward, and the cassette holder 1 is mounted to the cassette mounting position indicated by the dashed line in FIG. A pair of left and right reels (not shown) in the cassette 20 are mounted on a pair of left and right reel stands (not shown) of the chassis 6 at the cassette mounting position. Also, at this time, cassette 2
The front lid 24 of No. 0 is rotated upward and opened. The ejection operation of the cassette 20 is the reverse of the cassette loading operation described above, and the cassette holder 1 is moved back to the cassette insertion position.

By the way, in this cassette mounting position, when the cassette 20 is inserted diagonally upward (in the direction of arrow b) into the cassette holder 1 as shown by the solid line in FIG. Even if it interferes with the front end side 11a of the guide 11, when the front end side 11a is pressed by the lower end 24a of the front lid 24, the front end side 11a of the convex guide 11 will be pushed to the bottom against both leaf springs 15. It is rotated downward from the upper surface of the face plate 2 in the direction of arrow e and released. Therefore,
When inserting the cassette 20 into the cassette holder 1, the convex guide 11 does not interfere with the insertion of the cassette, and the cassette 20 can be inserted into the cassette holder 1 very smoothly.

The cassette loading device of this embodiment has two types of cassettes 20, large and small, which are different in size, as shown by a dashed line and a solid line in FIG. 3 and a dashed dot line and a dashed double dot line in FIG. Can be used selectively (2
These two types of cassettes 20, especially small cassettes, can be accurately positioned within the cassette holder 1 by the convex guide 11.

By the way, among the two types of cassettes 20, the small cassette is different from the cassette 20 as shown by the solid line in FIG.
When the cassette 20 is inserted into the cassette holder 1, the front end 11a of the convex guide 11 holds the cassette 20.
Slide the slider 25 inside to remove the cassette 20.
The reel is configured to unlock both reels within the reel. For this reason, the cassette 20 and the convex guide 1
If the end face of the front end side 11a of the convex guide 11 is chamfered with an R surface or a C surface to prevent interference with the guide 1,
There is a possibility that the sliding movement of the slider 25 by the end surface of the front end side 11a may become uncertain. However, in the convex guide 11 of the present invention, the front end side 11a is connected to the bottom plate 2.
Since the slider 25 is rotated downward from the upper surface and released, the end surface of the front end side 11a can be formed as a vertical surface, making it possible to slide the slider 25 extremely reliably.

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

For example, in the embodiment, the substantially central portion of the convex guide is pivotally supported by the support shaft, but the support shaft may be provided at the rear end so that the entire convex guide escapes downward. Furthermore, only the front end side of the convex guide may be rotatable.

Further, the structures of the support shaft, spring, stopper, etc. can be changed to various structures. Further, the guide groove and the convex guide do not necessarily need to be provided along the center of the cassette and cassette holder.

Note that the present invention is not limited to a cassette mounting device for a cassette type video tape recorder;
It is applicable to various cassette-type recording/reproducing devices and cassette mounting devices for information processing devices.

[Effect of idea]

In the present invention, when inserting a cassette into a cassette holder diagonally from above, even if the front end of the cassette interferes with the front end of the convex guide, the front end of the convex guide escapes downward, so that the cassette can be inserted easily. It can be inserted into the cassette holder very smoothly. Therefore, there is no trouble of carefully re-inserting the cassette horizontally or accidents such as damage to the front end of the cassette due to forceful insertion, and the cassette insertion operation is extremely easy and safe. Very expensive.

In addition, since the front end of the convex guide escapes downward, even when the reel in the cassette is unlocked by sliding the slider on the front end of the convex guide as in the embodiment, the cassette and convex guide There is no need to chamfer the front end face of the convex guide to eliminate interference with the reel, and the slider can be reliably slid by the vertical face of the front end to extremely reliably unlock the reel. be able to.

[Brief explanation of the drawing]

1 to 4 show an embodiment in which the present invention is applied to a cassette mounting device for a cassette-type video tape recorder. FIG. 3 is an exploded perspective view of the main parts, FIG. 3 is a longitudinal cross-sectional side view of the whole, and FIG. 4 is a plan view of the whole. FIG. 5 is a central vertical sectional side view of the main parts of a conventional example of a cassette mounting device for a cassette type video tape recorder. In addition, in the symbols used in the drawings, 1...cassette holder, 2...bottom plate, 11...convex guide, 11a...front end side, 12...support shaft, 14...
Stopper, 15... leaf spring, 20... cassette, 20a... bottom surface, 22... guide groove.

Claims (1)

[Scope of Claim for Utility Model Registration] A cassette holder configured to be able to reciprocate between a cassette insertion position where a cassette is inserted and a cassette installation position where the inserted cassette is installed, and a bottom plate of this cassette holder. The cassette has a convex guide provided on the top surface along the cassette insertion direction, and the cassette is inserted into the cassette holder by engaging the convex guide with a guide groove provided on the bottom surface of the cassette. In the cassette mounting device, the convex guide is pivotally supported on the bottom plate by a support shaft so as to be rotatable along the cassette insertion direction, and the front end of the convex guide is directed upward. A spring biasing the convex guide to rotate and a stopper restricting the rotation of the convex guide are provided, and the convex guide is caused to protrude substantially horizontally from the upper surface of the bottom plate by the spring and the stopper. A cassette mounting device characterized in that, when the front end side of the convex guide is pressed, the front end side of the convex guide is rotated downward from the upper surface of the bottom plate against the spring.