JPS5862876A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To constitute so that a cassette cannot be taken out carelessly in a state of a tape is being drawn out, by loading a small-sized cassette to a cassette adaptor used for a large-sized magnetic tape device, and turning a fitting member by interlocking with drawing-out of the tape. CONSTITUTION:To a case 1 of a cassette adaptor which is applicable to a large-sized magnetic tape device, the first and second tape drawing-out arms 14, 26 are pivotally attached, and on an arm 14, a fan-shaped arm part 50 is formed as one body. A driving pin 16 of an arm 14 is fitted into a long hole part 19 of an intermediate arm 18, and a driving pin 20 of an arm 18 and a driving 24 of an arm 26 are fitted into cam grooves 22, 23 of an operating lever 21. When the operating lever 21 is moved to the right, the arm 14 turns to the left, the arm 26 turns to the right, a tape 4 is drawn out, and the fan-shaped arm part 50 is fitted into a stepped part 21 of the cassette. Therefore, a cassette 2 cannot be taken out in this state, and it is prevented that the tape is damaged due to a careless operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to devices that record or reproduce signals using magnetic tape, such as audio tape recorders or video tape recorders (hereinafter collectively referred to as magnetic tape devices). Concerning a valid cassette adapter to use.

Depending on the application, magnetic tape devices include thick magnetic tape devices that use large tape cassettes with a large amount of magnetic tape wound in order to perform long-time recording or playback.
There is a small magnetic tape device that uses a small tape cassette that is small and lightweight and has a relatively small amount of magnetic tape wound therein so as to be convenient for outdoor portable use.

In this case, it goes without saying that both of the above magnetic tape devices are used.

The configurations such as the tape running path and the spacing between the reel stands (reel shafts) are different, and the tape cassettes used for both are different in not only the reel spacing but also the external dimensions, and the large tape cassette and the small tape cassette are different from each other. However, even if the recording formats of magnetic tapes are the same, it is difficult to achieve mutual compatibility.

In view of these points, the present invention provides that, when the recording format of the magnetic tape is the same, even if the dimensions and shapes of the tape cassettes used in both devices are different, the same magnetic tape can be used with any of the above magnetic tapes. Provide a highly reliable cassette adapter that can be easily applied to equipment7
That is.

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 shows a state in which a small cassette 2 applicable to a small magnetic tape device is loaded in a case 1 of a main body of a cassette adapter having a planar shape and a shape showing the main structure of an embodiment of the present invention. ing.

The small cassette 2 is smaller than a large cassette that can be applied to a large magnetic tape device, and has a magnetic tape 4 similar to the magnetic tape of the large cassette described above looped outward on the front surface. An opening A is formed that allows the drawer to be drawn out.

The magnetic tape 4 is connected to the supply reel 3 and to the tape guide 5a.
, 5b, and then wound onto a take-up reel 6. This small cassette 2 is positioned by positioning members 7a and 7b provided on the case 1.

Further, the lower flange of the take-up reel 6 of the small cassette 2 has a gear 8, which is connected to the take-up reel 1,', ! of the large magnetic tape device via an idler gear 9, 10. It meshes with a gear 12 provided on a take-up drive wheel 11 connected to a roll table (not shown).

A first tape pull-out pin 16 is implanted at the tip of a first tape pull-out arm 14 that is rotatably supported by a support shaft 13, and the first tape pull-out arm 14 is rotated counterclockwise. by rotating in the direction
A tape pull-out pin 16 is adapted to pull out the magnetic tape 4 to the outside of the small cassette 2 in a loop shape.

Further, a drive pin 16 is implanted at the other end of the first tape pull-out arm 14, and this drive pin 16 is attached to the support shaft 1.
It engages with an elongated portion 19 provided at one end of an intermediate arm 18 rotatably supported by 7. Furthermore, a fan-shaped arm 60 is integrally formed on the first tape pull-out arm 14 (see FIG. 3). A drive pin 2o is implanted at the other end of the intermediate arm 18, and the drive pin 20 engages with a first cam groove 22 provided in the operating lever 21. Further, the operating lever 21 is provided with a second cam groove 23, and a drive pin 24 is engaged with the second cam groove 23, and the drive pin 24 is rotatable by a support shaft 26. Pivoted second tape drawer arm 26
It is planted at one end of the. In addition to the second tape pull-out arm 26, a second tape pull-out pin 27 is implanted, and when the second tape pull-out arm 26 rotates clockwise, the second tape pull-out pin 27
can pull out the magnetic tape 4 to the outside of the small cassette 2.

The operating lever 21 has a guide groove 2 that engages with a guide pin 28.
9 and a guide member (not shown) in contact with end surfaces 29a and 29b of the operating lever 21 so as to be slidably guided from side to side.

The operating lever 21 is provided with a rack gear 3o,
This rack gear 30 meshes with a gear 32 rotatably supported by a support shaft 31. Further, an arm 33 is rotatably supported on the support shaft 31, and a gear 36 is provided rotatably by the support shafts 3 and 4 implanted in the arm 33, and the gear 35 is connected to the gear 12. They mesh together. The gear 36 is provided with a gear 36 that rotates via the gear 36 and a one-way clutch (not shown), and the gear 36 is connected to the gear 32 via a 7-way traction member (not shown). It meshes with 37.

Unfortunately, the lever 33 is biased to rotate counterclockwise by a tension spring 39 suspended from a pin 38 implanted in the lever 33. Further, a connecting wire 40 is connected to the pin 38, and the other end of the connecting wire 40 is connected to a pin 42 implanted in the cover 41 via a wire guide pin 44.

The cover 41 is rotatably supported by a support shaft 43. When the cover 41 is in the open position as shown in FIG. are connected so that Further, as shown in FIG. 2, the cover 41 is configured to be locked by a sliding locking member 46 in the closed state.

Next, the operation and operation of this embodiment will be explained. First, as shown in FIG. 1, the small cassette 2 is inserted into the cassette accommodating part in the case 1. At this time, the positioning member 7
The position of the small cassette 2 is determined by a and 7b.

Next, by riding the operating lever 21 with the cover 41 open, the first
The drive pin engaged with the cam groove 22 is driven. Along with this, the first tape pull-out arm 14 rotates via the intermediate arm 18, and the first tape pull-out pin 1
6 pulls out the magnetic tape 4 to the position shown in FIG. At this time, the fan-shaped arm portion 60 integrally formed with the first tape pull-out arm 14 also moves from the position where it is not engaged with the small cassette 2 shown in FIG. It rotates to a position where it is in a mating relationship with the stepped portion 61 formed at the left end of the cover 2. In this state, the fan-shaped arm portion 5o is engaged with the stepped portion 51 of the small cassette 2, as shown in FIG.

It becomes impossible to take out the small cassette 2 from the case 1.

In the above description, it is assumed that the fan-shaped arm portion 60 engages with the stepped portion 61 of the small cassette 2, but it is obvious that the same effect can be obtained with the fan-shaped arm portion 6o and the upper surface of the small cassette 2.

The pin 24 is driven, the second tape pull-out arm 26 rotates, and the second tape pull-out pin 27 moves the magnetic tape 4 to the position shown in FIG. Pull it out to a position corresponding to a possible magnetic tape running path. Finally, by closing the cover 41 and locking the cover 41 with the sliding locking member 46, the arm 33 connected by the connecting wire 40 is rotated clockwise, and the gear 36 provided on the arm 33 is rotated clockwise. 12'. Therefore, when the state shown in FIG. 2 is reached, the large magnetic tape device can be loaded, and the take-up drive wheel 11 connected to the take-up ream table (not shown) of the large magnetic tape device can be loaded. is a gear 12φ (separated from each other, no unnecessary load is applied, and signals can be recorded or reproduced stably.

Next, the case where the magnetic tape 4 that has been pulled out from the state shown in FIG. 2 is re-stored into the small cassette 2 will be described. First, the lock member 46 is slid to unlock the cover 41, and the cover 4 is opened to the state shown in FIG. At this time, the connecting wire 40 connected to the pin 42 at the other end of the cover 41 is loosened, and the arm 33 is rotated counterclockwise by the tensile force of the tension spring 39 stretched around the arm 33. A gear 35 and a gear 12 provided in the gear mesh with each other.

Next, by sliding the operating knob 46 in the direction of the arrow 48, the operating lever 21 moves in the direction of the arrow 48. At this time, the first tape pull-out arm 14 is rotated clockwise by the first cam groove 22, and the second tape pull-out arm 2 is rotated by the second cam groove 23.
6 rotates counterclockwise and returns to the state shown in FIG. As the operating lever 21 moves, the rack gear 30
As the gear 32 meshing with the rack gear 33 rotates, the gear 12 provided on the take-up drive wheel 11 rotates via the upper gears 37, 36, 35, and the gear 10 rotates. , 9 rotates the gear 8 and the take-up reel 6 rotates, so that the magnetic tape 4 that has been pulled out is stored in the small cassette 2. At this time, the gear 32 is configured to rotate more than the number of rotations required to wind up the magnetic tape 4 that has actually been pulled out, and the friction member ( (not shown), the magnetic tape 4 can be stored in the small cassette 2 without slack.

As is clear from the above description, in the present invention, the second cassette cannot be taken out from the case when the magnetic tape inside the second cassette is pulled out.
This makes it possible to prevent an accident in which an important magnetic tape is damaged or even cut due to careless removal of a cassette with the magnetic tape still pulled out.

[Brief explanation of drawings]

FIGS. 1 and 2 are plan views of essential parts of an embodiment of the present invention in a magnetic tape non-extracted state and in a withdrawn state,
FIG. 3 is a sectional view taken along the line GG in FIG. 2. 1... Case, 2... Small cassette,
3... Supply reel, 4... Magnetic tape, 6-=. Take-up reel, 14... first tape pull-out arm, 15... first tape pull-out pin,
26...Second tape drawer arm, 27...
...Second tape pull-out pin, 60...
Fan-shaped arm part, 61...Step part of small cassette, A
······Aperture.

Claims (1)

[Claims] A first cassette having a predetermined size and shape and containing a magnetic tape, which is also small and has a magnetic tape similar to the magnetic tape of the first cassette inside, and a tape in which the magnetic tape can be wound. A second cassette having a reel and an opening through which the magnetic tape can be pulled out in a loop shape can be removably loaded inside the cassette, and is substantially the same as the first cassette. Alternatively, in a state where a cassette storage case of approximately the same size and the second cassette is loaded in the cassette storage case, the first position located on the back side of the magnetic tape in the second cassette and the first position located on the back side of the magnetic tape in the second cassette; tape pulling means for pulling out the magnetic tape in the second cassette to a position corresponding to the magnetic tape running path of the tenth cassette and reciprocating between a second position for guiding the tape; In conjunction with the movement from the position to the second position, the second cassette is engaged with the second cassette so that the second cassette cannot be removed from the cassette storage case from a position where the second cassette is not engaged with the second cassette. cassette engaging means that moves to a mating position where the magnetic tape in the second cassette is pulled out; A cassette adapter characterized by being configured so that it cannot be taken out.