JPS6336055B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a tape cassette (hereinafter referred to as a first tape cassette) which is a conventional tape cassette (hereinafter referred to as a first tape cassette) with a smaller external shape by narrowing the distance between the reels.
The present invention relates to a cassette adapter for making it possible to use a second tape cassette (referred to as a second tape cassette) in a device in which a first tape cassette is used.

Conventional configurations and their problems Compared to compact tape cassettes for audio, tape cassettes used in video tape recorders, etc. have a much smaller external shape due to standards such as tape width and distance between reels. Even in large, portable devices, the size of the tape cassette limits the ability to miniaturize the device, which poses a major problem.

Also, with the current technology, there are problems with image quality.
It is also difficult to make small tape cassettes with narrow tape widths.

For this reason, as a means to downsize tape cassettes and equipment, the tape width is the same as that of the conventional first tape cassette, and the distance between the reels is set to approximately the same as that of the first tape cassette. In addition to reducing the amount to about 1/2, the amount of tape is also reduced to 1/2 compared to the full size of the first tape cassette.
A small second tape cassette with a capacity of about 4 to 1/6 has started to be considered.

With such a small second tape cassette, it is possible to obtain the same image quality as the current first tape cassette, and not only can the tape cassette itself be made smaller, but also the equipment that uses the tape cassette can be made smaller. However, since the amount of tape will be reduced, the recording time will be shorter than that of the current first tape cassette. When considering recording time and miniaturization, it is desirable to change the tape cassette used depending on the application, and it is desirable to use a small second tape cassette that is compatible with the first tape cassette. In other words, it is required that the first tape cassette can also be used in equipment that uses the first tape cassette, and a cassette adapter that satisfies this requirement becomes necessary.

OBJECTS OF THE INVENTION It is an object of the present invention to improve the mounting strength of a guard panel provided on such a cassette adapter.

Structure of the Invention In order to achieve this object, the present invention includes the following steps:
A main body case which houses a second tape cassette having a shorter reel distance than the first tape cassette and which includes a chassis and a cover having the same dimensions as the first tape cassette; a tape drawer/storage means for performing a drawing operation for drawing out the magnetic tape from the second tape cassette to the tape guide position of the first tape cassette and a storage operation for storing the magnetic tape in the second tape cassette; a reel driving means for driving a reel of a second tape cassette arranged in the main body case and housed in the main body case; A flat portion is provided on the surface facing the upper surface of the main body case, and a receiving portion for the guard panel is provided on the chassis.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the cassette adapter of the present invention will be described below with reference to FIGS. 1 to 5.

In the figure, 1 is a second tape cassette, and this second tape cassette 1 rotatably supports and stores reels 4 and 5 on which a magnetic tape 3 is wound in a half case 2. It is constructed by forming a predetermined running path such that the magnetic tape 3 is exposed to the outside on the side. In this second tape cassette 1, one reel 4 can be operated from the bottom side of the half case 2 through a window (not shown) provided at the bottom of the half case 2, so that the tip of the reel stand of the device is inside the half case 2. The other reel 5 has a reel shaft (not shown) embedded in the half case 2.
A gear portion 5a is formed on the outer peripheral portion of the half case 2, and is rotated by a gear on the drive source side that meshes with the gear portion 5a through a window on the side surface of the half case 2.

Reference numeral 6 denotes a main body case consisting of an adapter chassis 6' and a cover 6'', and this main body case 6 is
It has the same external dimensions as the second tape cassette 1, and the second tape cassette 1 is placed inside this main body case 6.
is loaded. In this main body case 6, a reel gear 7 that can be attached to the tip of one of the reel stands is rotatably supported and disposed at a position corresponding to the reel stand of the video tape recorder, and a reel gear 7 that can be attached to the tip of one of the reel stands is rotatably supported. A window is provided at the tip to allow the reel 4 of the second tape cassette 1 to be attached. An idler gear 8 meshes with the reel gear 7, and a gear portion 5a of the reel 5 of the second tape cassette 1 is connected to the idler gear 8.
are engaged, and the reel 5 of the second tape cassette 1 rotates due to the rotation of the reel gear 7, and the magnetic tape 3 is rotated.
run.

A take-up side pull-out arm 9 in the shape of a fishing needle is arranged in the main body case 6 so as to rotate around a shaft 9a, and a second tape cassette is attached to one end of the take-up side pull-out arm 9. A guide roller 10 is attached for hooking one magnetic tape 3 and pulling it out to a predetermined position.

Further, a supply side pullout arm 11 is arranged at a position facing the take-up side pullout arm 9 of the main body case 6 so as to rotate around a shaft 11a, and also at one end of this supply side pullout arm 11. Similar to the take-up side pull-out arm 9, a guide roller 12 is attached for hooking the magnetic tape 3 of the second tape cassette 1 and pulling it out to a predetermined position. A knob 11b is provided at the other end of the supply side pull-out arm 11, and the knob 11b is connected to the square hole 1 of the dogleg-shaped connecting arm 13, which is arranged to rotate around a shaft 13a.
It is fitted into 3b. Furthermore, a knob 13c is provided at the other end of the connecting arm 13, and the knob 13c is fitted into a square hole 14b of the connecting arm 14, which is arranged to rotate about a shaft 14a. The other end of the connecting arm 14 engages with a knob 9b provided at the other end of the take-up side pull-out arm 9. Reference numeral 15 denotes a drive rack in which a pinion gear 16 that is rotated manually or by a drive source such as a motor meshes with the drive rack.
A cam groove 15a into which the cam is fitted is provided. The cam groove 15a of the drive rack 15 has the drive rack 1
There is a part A that is parallel to the moving direction of 5 and a part B that is inclined. Further, an L-shaped cam groove 15b is provided on the upper surface of the drive rack 15, and a knob 17b of an L-shaped connecting angle 17 that rotates around a shaft 17a is fitted into the cam groove 15b. I'm here. Square hole 17c at one end of this connecting angle 17
A knob 19a of a guard panel opening/closing rod 19 that slides while being guided by guide shafts 18a and 18b is fitted in the. That is, as the connecting angle 17 rotates around the shaft 17a, the guard panel opening/closing rod 19 moves toward the guide shaft 18.
It slides while being guided by a and 18b.

20 is a guard panel disposed on the front side of the main body case 6 of the adapter so as to be openable and closable;
The shafts 20a and 20b of this guard panel 20 are connected to bearing holes 21a and 21b provided in the side plate of the main body case 6.
is inserted into.

In such a configuration, when the drive rack 15 starts to move in the direction of arrow A, the knob 9b of the take-up side pull-out arm 9 is located at the part A of the cam groove 15a at this point, so the take-up side pull-out arm 9 does not rotate.

On the other hand, since the knob 17b of the connecting angle 17 is located at a right-angled portion of the cam groove 15b of the drive rack 15, it rotates in the direction of arrow B, thereby causing the guard panel opening/closing rod 19 to close to the guard. In order to push the shaft 20a of the panel 20, the guard panel 2
0 rotates around the shaft 20b in the direction of the arrow C against the tensile force of the spring 23 and opens, resulting in the state shown in FIG.

Then, the drive rack 15 further moves in the direction of arrow A, and the knob 9 of the take-up side pull-out arm 9
When b comes to the part B of the cam groove 15a, the cam groove 1
Since the portion B of 5a is inclined, the take-up side pull-out arm 9 rotates in the direction of arrow D. This causes the connecting arm 1 engaged with the knob 9b to
4 also rotates around the shaft 14a, and the connecting arm 13 connected to the connecting arm 14 also rotates around the shaft 13a, so that the supply side drawer arm 11 rotates around the shaft 11a in the direction of the arrow. Rotate in the E direction. The state at this time is shown in FIG.

When the take-up side pull-out arm 9 and the supply-side pull-out arm 11 rotate inward in this way, the reel 5 is rotated by the reel gear 7, so that the take-up side pull-out arm 9 and the supply-side pull-out arm 11 are rotated. The magnetic tape 3 that had been pulled out of the half case 2 is now housed inside the half case 2. As shown in FIG. 2, by housing the magnetic tape 3 in the half case 2, the second tape cassette 1 can be taken out from inside the adapter.

By performing the opposite operation,
Pull out the magnetic tape 3 from inside the half case 2,
The second tape cassette can be pulled out to the same tape guide position as the first tape cassette (the state shown in FIG. 1), thereby allowing the second tape cassette to be used in equipment that uses the first tape cassette.

FIG. 3 shows an external view of the second tape cassette 1 and the adapter, and 24 is a holding lid of the second tape cassette 1, and 25 is a locking member. There is a guard panel 1a at the front of the second tape cassette 1, which can be opened in the direction of the arrow. A notch 20c is provided in the guard panel 20 of the adapter so that the second tape cassette 1 does not hit the guard panel 1a when it is inserted into the adapter. However, because the notch 20c is provided, the guard panel 20 becomes extremely susceptible to bending when force is applied from the direction of the arrow G. Therefore, FIG. 4 shows an embodiment for increasing this strength. FIG. 4 is a sectional view of the adapter, and shows a flat part 20d on the guard panel 20 facing the flat part 6a provided on the upper surface of the main body case 6.
The chassis 6' has a step 6b.
is provided. If force is applied to the guard panel 20 in the direction of the arrow "R" and further force is applied in the direction of the arrow "G", the flat part 6a and the flat part 20d, the step 6b and the lower end 20e of the receiving part will shift and easily come off. Become. The rib 20f provided at the lower end of the guard panel 20 prevents this from happening, and even if a force is applied in the direction of the arrow R, the step 6b and the rib 20f will catch on, so it will not come off easily, and it will not come off easily in the direction of the arrow C. You can open it without any problem even when opening it. Such ribs 20f and receiving portions may be provided on the entire surface of the guard panel 20, the main body case 6, and the chassis 6', or even if they are provided only partially, a great effect can be exerted.

Effects of the Invention As described above, according to the cassette adapter of the present invention, the mounting strength of the guard panel can be improved, and as a result, the guard panel will not come off even if the guard panel portion is held by hand. .

[Brief explanation of the drawing]

1 and 2 are plan views showing the internal structure of a cassette adapter according to an embodiment of the present invention, FIG. 3 is an external perspective view of the adapter, and FIG.
The figure is a sectional view showing a specific example of the main parts of the adapter. 1... Second tape cassette, 6... Main body case, 6'... Chassis, 6''... Cover, 6a...
Plane portion, 6b...step, 7...reel gear, 8...
...Idler gear, 9...Take-up side drawer arm, 10, 12...Guide roller, 11...Supply side drawer arm, 20...Guard panel, 20
d...Plane part, 20e...Lower end, 20f...Rib.

Claims (1)

[Claims] 1 A second tape cassette having a shorter inter-reel distance than the first tape cassette is stored, and the first tape cassette is
a main body case consisting of a chassis and a cover having the same dimensions as the tape cassette; a pull-out operation for pulling out a magnetic tape from the second tape cassette to a tape guide position of the first tape cassette; a tape drawer storing means for performing a storing operation of storing a magnetic tape in a second tape cassette; and a reel driving means disposed within the main body case and driving a reel of the second tape cassette housed within the main body case. A guard panel is provided in the front opening of the main body case so as to be freely openable and closable, and a flat part is provided on the surface of the guard panel facing the upper surface of the main case,
A cassette adapter characterized in that a rib protrudes from the lower end of a guard panel and engages with a receiving part provided on a chassis.