JPH0721727A - Cassette adapter for cassette drive system - Google Patents

Abstract

PURPOSE:To use a small cassette even to a drive device for a large cassette by constituting a cassette adapter capable of loading on the drive device for the large cassette while holding the small cassette. CONSTITUTION:The small cassette K1 is loaded on a prescribed position of a base plate 21, and a protection cover 20 is covered from upward the cassette K1, and the protection cover 20 is mounted on the base plate 21. In such a manner, the cassette adapter KA housing the small cassette K1 is inserted into the cassette port of the driving device for the large cassette. Since the cassette adapter KA is provided with the roughly same outside dimension as the large cassette, is inserted into the cassette port smoothly, and a door is opened in the process of insertion. Then, in the position of loading, a capstan (not shown in figure) and a head (not shown in figure) of the driving device side are entered from the notched parts 24 of the protection cover 20, and the cassette is driven. When recording/reproducing is ended, the backward projecting part of the cassette adapter KA is grasped, and is pulled out and taken out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette drive system having a small cassette and a large cassette, and relates to a cassette adapter which enables the small cassette to be used as a drive device dedicated to the large cassette.

[0002]

2. Description of the Related Art A high track density tape cassette has been proposed as an external recording medium for a computer. As this tape cassette, a large-sized cassette is proposed in addition to the initial small-sized cassette, and in FIG. 7, a small-sized cassette K ₁ (hereinafter referred to as a “small cassette”).
However, FIG. 8 shows large-sized cassettes K ₂ (hereinafter referred to as “large cassettes”).

In FIG. 7, a small cassette K ₁ has a flat rectangular parallelepiped shape, and a pair of reels 2 is rotatably provided in a case 1 whose upper part is transparent. This pair of reels 2
A tape 3 is wound around the tape, and the tape 3 runs on a tape running path formed between a pair of reels 2.

A drive roller 4 and a pair of left and right driven rollers 5 are provided in the case 1, and an endless drive belt 6 is hung between the rollers 4 and 5. The drive belt 6 is pressed against the outermost circumference of the tape 3 wound around the pair of reels 2. The large-diameter portion 4a of the drive roller 4 is partially exposed from the hole 1a on the front surface of the case 1, and receives the rotational force from the capstan on the drive device side in the mounted state. When the drive belt 6 travels due to the rotation of the drive roller 4, the tape 3 receives a frictional force at a portion where the tape 3 is pressed against the drive belt 6, and the frictional force causes the tape 3 to travel.

A tape exposure space is formed on the front surface of the case 1, and the tape exposure space is opened and closed by a door 7. The door 7 is shown in the closed position shown in solid lines in FIG.
At the closed position, and is biased toward the closed position by the spring force of a spring (not shown). The door 7 is displaced from the closed position to the open position during the mounting process of the drive device, and the head of the drive device enters the tape exposed space and is pressed against the tape 3.

In FIG. 8, the large cassette K ₂ comprises a flat rectangular parallelepiped front insertion portion 8 and a rear overhanging portion 9 projecting leftward and rightward from the front insertion portion 8.
The width and height of the cassette are substantially the same as those of the small cassette K ₁ . A pair of tape reels 2 is arranged on the rear overhanging portion 9, and a large amount of tape 3 is stored as compared with the small cassette K ₁ . Other basic structures is omitted because it is substantially the same as the small cassette K _1, and their description are denoted by the same reference numerals to those same portions of the small cassette K ₁ in the drawings.

That is, the large cassette K ₂ is designed to have a large capacity by increasing the tape storage amount, and is designed to have a larger size than the small cassette K ₁ .
Uses the same drive system as the small cassette K ₁ , and
It is constructed so that the same cassette drive device as the small cassette K ₁ can also be used.

FIG. 9 shows a drive device D ₁ for a small cassette.
It is shown. In FIG. 9, a drive device main body 11 is housed in a protective case 10, and the front surface of the drive device main body 11 has a front panel 10 c of the protective case 10.
Is exposed in the opening 12. A cassette insertion opening 13 is provided on the front surface of the drive device main body 11, and the cassettes K ₁ and K ₂ are inserted through the cassette insertion opening 13. Further, the drive device main body 11 is provided with a drive mechanism (not shown) such as the above-mentioned output roller and head, and performs recording / reproduction of the mounted cassettes K ₁ and K ₂ .

When the small cassette K ₁ is attached to the drive device D ₁ , the rear side of the small cassette K ₁ slightly projects from the front panel 10c of the protective case 10, as shown in FIG.
When the large cassette K ₂ is attached to the drive device D ₁ , FIG.
As shown in FIG. 5, the rear overhanging portion 9 is mounted so as to protrude larger than the front panel 10c. When taking out the cassettes K ₁ and K ₂ , the portion protruding from the front panel 10c is grasped and pulled out.

FIG. 11 shows a drive device D for a large cassette.
₂ is shown. In FIG. 11, this drive device D ₂ has a large cassette K ₂ that can be inserted deep into the protective case 10, and a guide member (not shown) for guiding the rearwardly extending portion 9 is provided in the protective case 10. There is. The other structure is the same as that of the drive device D ₁ for the small cassette. When the large cassette K ₂ is mounted on the drive device D ₂ , a part of the rear overhanging portion 9 is mounted so as to project from the front panel 10c as shown in FIG. If the rear overhanging portion 9 is largely projected, the stability of the large cassette K ₂ is poor and the operator or the like accidentally contacts the rear overhanging portion 9, or
This is because there is a high risk of collision.

[0011]

However, the drive device D ₂ for a large cassette has a drawback that the small cassette K ₁ cannot be used because the cassette insertion stroke is long.

Therefore, it is an object of the present invention to provide a cassette adapter that enables the use of a small cassette even in a drive device for a large cassette.

[0013]

The cassette adapter of the cassette drive system according to the present invention for achieving the above object adopts the same drive system for the small cassette and the large cassette, and selectively the same. In a cassette drive system that can be driven by a drive device for a large cassette, the drive device for the large cassette has a storage unit that has substantially the same outer size as the large cassette and stores the small cassette. The small cassette can be directly driven by the device.

The cassette adapter of the cassette drive system according to the second aspect of the present invention is a cassette drive system in which a small cassette and a large cassette adopt the same drive system and can be selectively driven by the same drive device. Has a holding means for holding the small cassette, and is configured to be attachable to a drive device for a large cassette while holding the small cassette. When the drive device is attached, the small cassette can be directly driven. It is what is done.

[0015]

According to the first aspect of the present invention, the cassette adapter accommodating the small cassette has substantially the same outer size as the large cassette, and can be mounted on the drive device for the large cassette to drive the small cassette.

According to the second aspect, the cassette adapter holding the small cassette can be mounted on the drive device for the large cassette to drive the small cassette.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. FIG. 1 shows an exploded perspective view of the cassette adapter KA.
In FIG. 1, the cassette adapter KA includes a base plate 20 and a protective cover 21.
The protective cover 21 and the protective cover 21 are detachable. In the mounted state of the base plate 20 and the protective cover 21, it has a substantially same outer size as the large cassette K _2, and the front insertion portion 8
And a rear overhang portion 9 are configured. The inside front insertion portion 8 accommodating portion 22 of the small cassette K ₁ is constructed, a small cassette K ₁
The front surface and both side surfaces are on the inner wall surface of the protective cover 20, and
The rear surfaces of the base plates 21 are regulated in position by the regulation protrusions 23 of the base plate 21 and stored.

The door 7 and the hole 1a of the small cassette K ₁
A cutout portion 24 is formed at a position of the protective cover 20 corresponding to the above, so that the door 7 can be opened and closed and the capstan of the drive device D ₂ can be entered.

In the above structure, the base plate 21
Small cassette K in place₁Place the protective cover on top of
Covering the bar 20, the protective cover 20 and the base plate 21
Put on. In this way small cassette K₁Stored
The cassette adapter KA is used as a drive device D for large cassettes.
₂It is inserted into the cassette insertion port 13 of. Cassette adapter
KA is a large cassette K₂Has the same external size as
Therefore, it is inserted smoothly from the cassette insertion slot 13,
The door 7 is opened during the insertion process. And as shown in Figure 2
In the mounting position, drive device D₂Side capstan
The protective cover 20 includes a head (not shown) and a head (not shown).
Driven by entering from the notch 24. Recording and playback
When finished, grasp the rear protruding part of the cassette adapter KA.
You can take it out by holding it and pulling it out. Actually,
The height of Dapta KA is large cassette K ₂Base height than height
Since the thickness of the rate 21 and the protective cover 20 is high,
Drive device D₂The side has a structure that allows it
It is necessary to

3 to 5 show cassette adapters KA of the second to fourth embodiments of the present invention, respectively.
3 to 5, each cassette adapter KA is the first
It has a flat plate shape corresponding to the base plate 21 of the embodiment,
Like the large cassette K ₂ , the front insertion portion 8 and the rear extension portion 9
It consists of and. The width W ₁ of the front insertion portion 8 is the small cassette K ₁
Is set to be slightly smaller than the width W ₂ of the drive device D _{2 when} the pair of guide reference portions 1b of the case 1 (shown in FIG. 7) are guided by the pair of guide grooves (not shown) of the drive device D ₂ . It is configured so as not to become an obstacle. Further, in the front insertion portion 8 of the embodiment, a holding means 25 for holding the small cassette K ₁ is provided.
The holding means 25 is different in each embodiment.

The holding means 25 of the second embodiment shown in FIG.
It is composed of a protrusion 26 and a pair of fixed walls 27 which are provided upright at four places. By inserting each projection 26 into each temporary fixing hole (not shown) of the case 1 of the small cassette K ₁ and bringing the fixed wall 27 into contact with the rear surface of the case 1, the small cassette K 1
Hold ₁

The holding means 25 of the third embodiment shown in FIG.
It is composed of a pair of locking claws 28 and a pair of fixed walls 27. A pair of positioning grooves 1 of the case 1 small cassettes K ₁
The small cassette K ₁ is held by inserting the locking claws 28 into c and sandwiching the locking claws 28 with the pair of fixed walls 27.

The holding means 25 of the fourth embodiment shown in FIG.
It is configured by screw insertion holes 29 formed at two places. The screw 30 for connecting the upper and lower case members is once removed, and the small cassette K ₁ in the temporarily fixed state is set to the cassette adapter K.
The small cassette K ₁ is placed at a predetermined position of A and the screw 30 is refastened from below the cassette adapter KA.
Hold.

FIG. 6 shows a drive device D for a large cassette in which the cassette adapters KA of the second to fourth embodiments can be used.
₂ is shown. In FIG. 6, the drive device main body 1
1 is arranged in the back of the protective case 10, and the opening 12 of the protective case 10 has a cassette insertion opening 1 of the drive device main body 11.
It is located in front of 3. Guide grooves 31 are formed on the left and right inner side surfaces of the protective case 10, respectively. When inserting the cassette adapter KA, this pair of guide grooves 31
The cassette adapter KA is guided by inserting both side ends of the rearward extending portion 9 of the cassette adapter KA. Further, the lower part of the cassette insertion opening 13 of the drive device main body 11 is formed to be partly larger than an ordinary cassette insertion opening so that the cassette adapter KA can be inserted therein.

In the above structure, the cassette adapter KA holding the small cassette K ₁ is inserted into the opening 12 of the drive device D ₂ , and the both sides of the rear overhang 9 are protected by the protective case 1.
0 into the pair of guide grooves 31 and the front end side of the cassette adapter KA into the cassette insertion opening 13 of the drive device body 11. During this insertion process, the door 7 is opened, and the capstan (not shown) on the drive device side can be brought into pressure contact with the drive roller and the head (not shown) can be brought into pressure contact with the tape 3 at the mounting position. When the recording / reproducing is completed, the rearward projecting portion of the cassette adapter KA can be grasped and pulled out to be taken out.

[0026]

As described above, according to the present invention, since the cassette adapter which holds the small cassette and can be attached to the drive device for the large cassette is constructed, the small cassette can be installed in the drive device for the large cassette. It has the effect of being usable.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cassette adapter (first embodiment).

FIG. 2 is a perspective view showing a state in which the cassette adapter is attached to the drive device (first embodiment).

FIG. 3 is a perspective view of a cassette adapter (second embodiment).

FIG. 4 is a perspective view of a cassette adapter (third embodiment).

FIG. 5 is a perspective view of a cassette adapter (fourth embodiment).

FIG. 6 is a drive device for a large cassette (second to fourth embodiments).

FIG. 7 is a plan view of a small cassette.

FIG. 8 is a plan view of a large cassette.

FIG. 9 is a perspective view showing a state in which a small cassette is mounted on a drive device for a small cassette (conventional example).

FIG. 10 is a perspective view showing a state in which a large cassette is mounted on a drive device for a small cassette (conventional example).

FIG. 11 is a perspective view showing a state in which a large cassette is mounted on a drive device for a large cassette (conventional example).

[Explanation of symbols]

D ₁ , D ₂ ... Drive device K ₁ ... Small cassette K ₂ ... Large cassette KA ... Cassette adapter 22 ... Storage section 25 ... Holding means

Claims (2)

[Claims] 1. A cassette drive system in which a small cassette and a large cassette adopt the same drive system and can be selectively driven by the same drive device, and has a substantially same outer size as the large cassette, A cassette adapter for a cassette drive system, further comprising a storage portion for storing the small cassette, and the small cassette can be directly driven by the drive device when the small cassette drive device is mounted. 2. A cassette drive system in which a small cassette and a large cassette adopt the same drive system and can be selectively driven by the same drive device, having a holding means for holding the small cassette, A cassette adapter for a cassette drive system, which is configured to be attachable to a drive device for a large cassette while holding a small cassette, and when the drive device is attached, the small cassette is directly driveable.