JPH0421951B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION 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.

Compared to compact tape cassettes for audio, tape cassettes used in video tape recorders and the like are considerably larger due to standards such as tape width and distance between reels, and even in portable equipment. Since the tape cassette is large, there is a limit to miniaturization, which is 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, etc., 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.

SUMMARY OF THE INVENTION The object of the present invention is to provide such a cassette adapter with which a magnetic tape can be pulled out and stored without damaging the magnetic tape.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cassette adapter of the present invention will be described below with reference to FIGS. 1 to 3.

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, the reel 4 on one supply side can be operated from the bottom side of the hearth case 2 through a window (not shown) provided at the bottom of the hearth case 2, and The reel 5 on the other take-up side is rotatably supported by a reel shaft (not shown) implanted in the half case 2, and a gear is fitted on the outer periphery. A portion 5a is formed, and is rotated by a gear on the driving 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 of the adapter, which has the same external dimensions as the first tape cassette of this main body case 6, and the second tape cassette 1 is loaded into this main body case 6. This main case 6
At a position corresponding to the reel stand of the video tape recorder, a reel gear 7 which can be attached to the tip of one of the reel stands is rotatably supported, and the reel gear 7 is rotatably supported at the tip of the other reel stand. A window (not shown) is provided to allow the reel 4 of the second tape cassette 1 to be attached. An idler gear 8 meshes with the reel gear 7, a gear portion 5a of the reel 5 of the second tape cassette 1 meshes with the idler gear 8, and the rotation of the reel gear 7 causes the reel 5 of the second tape cassette 1 to rotate. Then, the magnetic tape 3 is made to 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 for hooking the magnetic tape 3 of the second tape cassette 1 and pulling it out to a predetermined position.
is installed. A knob 11b is provided at the other end of the supply side drawer arm 11, and the knob 11b is connected to a square hole 13b of a dogleg-shaped connecting arm 13 arranged to rotate around a shaft 13a.
It's stuck inside. Furthermore, this connecting arm 13
A knob 13c is provided at the other end, and the knob 13
c is fitted into the square hole 14b of the connecting arm 14, which is arranged to rotate around the 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 this drive rack 15, and an L-shaped cam groove 15b is provided in the cam groove 15b.
The knob 17b of the letter-shaped connection angle 17 is fitted. Square hole 17 at one end of this connection angle 17
At c, there is a guard panel opening/closing rod 19 that slides while being guided by guide shafts 18a and 18b.
The knob 19a is fitted. 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.

Reference numeral 20 denotes a guard panel that is arranged to be openable and closable in two directions with respect to the front opening of the main body case 6 of the adapter, and shafts 20a and 20b at both ends of this guard panel 20 are connected to the side plates of the main body case 6. It is inserted into bearing holes 21a and 21b provided in
As shown in FIG. 3, it is arranged to be openable and closable in a direction perpendicular to the front opening of the main body case 6 (in the direction of the arrow H) about shafts 20a and 20b.

Of the bearing holes 21a and 21b that rotatably support the shafts 20a and 20b of the guard panel 20, the bearing hole 21a is a long hole, and the shaft 20a of the guard panel 20 is located inside the bearing hole 21a as shown in FIG. It can be opened and closed about the shaft 20b in a direction protruding toward the front side of the front opening of the main body case 6 (in the direction of arrow C) so that it can be opened and closed.

Moreover, the shaft 20a of this guard panel 20 has
One end of a spring 23 is engaged with the protrusion 22 of the main body case 6, and the other end of the spring 23 is engaged with the protrusion 22 of the main body case 6, and the guard panel 20 is attracted to the inside of the main body case 6 by the spring 23. Furthermore, this guard panel 20
The shaft 20a has the guard panel opening/closing rod 1.
The tip of 9 is in contact.

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 two directions indicated by the arrows. This causes the connecting arm 1 engaged with the knob 9b to
4 also rotates in the direction of the arrow around the shaft 14a, and the connecting arm 13 connected to the connecting arm 14 also rotates in the direction of the arrow H around the shaft 13a, whereby the supply side drawer arm 11 is axis 1
It rotates around 1a in the direction of arrow H. The state at this time is shown in FIG.

Here, since the rotation of the pinion gear 16 is also transmitted to the reel gear 7 via a transmission means (not shown), the movement of the drive rack 15 causes the take-up side pull-out arm 9 and the supply-side pull-out arm 11 to rotate inward. When the reel 5 is moved, the reel 5 can be rotated via the reel gear 7, and the take-up side pull-out arm 9 and the supply-side pull-out arm 1
The magnetic tape 3, which had been pulled out of the half case 2 by the magnetic tape 1, is housed in the half case 2 in conjunction with the rotation of each pull-out arm.
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.

Further, by performing an operation opposite to this operation, the magnetic tape 3 can be pulled out from inside the half case 2 to the same tape guide position as the first tape cassette (the state shown in FIG. 1). This allows the second tape cassette to be used in equipment that uses the first tape cassette. At this time, the drive rack 15 moves in the opposite direction to the direction of arrow A, and the take-up side pull-out arm 9
Until the supply side drawer arm 11 pulls out the magnetic tape 3 from the second tape cassette 1 and rotates to the tape guide position of the first tape cassette, the guard panel 20 remains in the state shown in FIG. When the knob 17b of the angle 17 moves to the perpendicularly bent part of the cam groove 15b of the drive rack 15, the guard panel opening/closing rod 19 moves to its original position and the guard panel 20 is opened by the tension of the spring 23. It will be closed as shown in Figure 1.

In this way, since the timing at which the guard panel 20 opens and closes and the timing at which the take-up side pull-out arm 9 and the supply-side pull-out arm 11 rotate are ordered by the cam grooves 15a and 15b of the drive rack 15, the magnetic tape 3 When the magnetic tape 3 is pulled out and stored, the guard panel 20 and the guide roller 10 provided at the tip of the take-up side pull-out arm 9 do not come into contact with each other, and the magnetic tape 3 can be pulled out and stored smoothly without damaging the magnetic tape. It can be carried out.

Further, when the magnetic tape 3 is pulled out or stored from the second tape cassette 1, the guard panel 20 is opened by rotating around the shaft 20b in a direction in which the shaft 20a side protrudes toward the front (in the direction of arrow C). and
Since the magnetic tape 3 is not completely exposed to the outside, it is possible to prevent damage to the magnetic tape 3 as much as possible, and since the movement is within the thickness of the main body case of the adapter, there is no need to apply excessive force from the outside of the guard panel 20. This prevents damage to the guard panel 20 as much as possible.

As described above, according to the cassette adapter of the present invention, the guard panel is opened and closed, and the magnetic tape is pulled out and stored in a predetermined order. Since there is no contact between the guide panel and the magnetic tape, the magnetic tape can be pulled out and stored smoothly without damaging the magnetic tape, and since the guard panel opens with one end protruding toward the front, the magnetic tape can be pulled out and stored smoothly. In addition to not being completely exposed to the outside, unreasonable force is rarely applied to the guard panel, and it is possible to prevent the magnetic tape from being scratched or the guard panel from being damaged as much as possible.

[Brief explanation of drawings]

FIG. 1 is a plan view of a cassette adapter according to an embodiment of the present invention showing a state in which a magnetic tape is pulled out, FIG. 2 is a plan view of the cassette adapter in a state in which a magnetic tape is accommodated, and FIG. FIG. 3 is a perspective view showing the internal structure of the cassette adapter. 1... Second tape cassette, 2... Half case, 3... Magnetic tape, 4, 5... Reel, 6
... Main body case, 7 ... Reel gear, 8 ... Idler gear, 9 ... Take-up side drawer arm, 1
0, 12... Guide roller, 11... Supply side pull-out arm, 13, 14... Connection arm, 15...
...Drive rack, 17...Connection angle, 19...
Guard panel opening/closing rod, 20...Guard panel, 20a, 20b...Shaft, 21a, 21b...
Bearing hole.

Claims (1)

[Claims] 1 A second tape cassette 1 having a shorter distance between rules than the first tape cassette is stored, and
a main body case 6 having the same dimensions as the tape cassette;
A pull-out operation for pulling out the magnetic tape 3 from the second tape cassette 1 to the tape guide position of the first tape cassette and a storage for storing the magnetic tape 3 in the second tape cassette 1 are disposed within the main body case 6. tape drawer storage means 9 for performing the operation;
11, and a reel driving means 7 disposed within the main body case 6 and driving the reel of the second tape cassette 1 housed within the main body case 6 in conjunction with the tape drawer storage means 9 and 11. , the card panel 20 is arranged vertically to the front opening of the main body case 6 so as to be freely openable and closable;
Shafts 20a, 20 at both ends of the guard panel 20
One of the bearing holes 21a, 21b of the main body case 6 that rotatably supports the main body case 6 is set as a long hole 21a, and the guard panel 20 is rotated around the shaft 20b that fits into the bearing hole 21b opposite to the long hole 21a. is arranged to be freely openable and closable in a direction protruding to the front side with respect to the front opening of the main body case 6, and a guard panel opening/closing means 19 is provided for opening and closing the guard panel 20 in a direction protruding to the front side, A driving means 15 that drives the guard panel opening/closing means 19 when moving from the first position to the second position and drives the tape drawer storage means 9 and 11 when moving from the second position to the third position. The cassette adapter provided.