JPS582429B2 - cassette adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable 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). This is related to a cassette adapter that is effective as a cassette adapter.

Depending on the application, magnetic tape devices include large 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, the above-mentioned two magnetic tape devices naturally have different configurations such as the spacing between reel stands (reel axes), and the tape cassettes used for both differ not only in reel spacing but also in external dimensions. It has been difficult to make tape cassettes and small tape cassettes compatible with each other even if their magnetic tape recording formats are the same.

In view of this, the present invention has been developed to allow the same magnetic tape to be used in any of the above devices even if the dimensions (or dimensions and shapes) of the tape cassettes used in both devices are different when the recording formats of the magnetic tapes are the same. It is an object of the present invention to provide a cassette adapter that can be easily applied to magnetic tape devices.

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

FIG. 1 is a partially cutaway plan view of an example of a small tape cassette used in the present invention, FIG. 2 is a side sectional view thereof, and FIG. 3 is a sectional view taken along the line A--A in FIG. 1.

In those drawings, 1 and 2 are reels 4, 5, 6, which are the supply side and take-up side on which the magnetic tape 3 is wound.
Reference numeral 7 denotes a tape guide for guiding the magnetic tape 3 unwound from the reel 1 to the reel 2 through a predetermined path.

Each of the reels 1 and 2 has a first shell (hereinafter referred to as the left shell) 8 made of synthetic resin, which is a box-shaped reel holding member that can be detachably divided approximately in the center, and a second shell 8 made of synthetic resin.
Each of the reels 1 and 2 is rotatably housed inside a shell (hereinafter referred to as the right shell) 9, and the central lower part of the reels 1 and 2 is connected to a reel drive unit of a magnetic tape device, as shown in FIG. A shaft (not shown) is exposed for coupling.

As is clear from FIGS. 1 and 3, the left shell 8 and right shell 9 are joined by partially overlapping them and fastening them with screws 10.

Of course, the coupling means is not limited to the structure shown in the drawings, and may be achieved by fitting the protrusions and recesses without using screws.

Furthermore, openings 11 and 11' are provided in the front portions of the left shell 8 and right shell 9 to expose the magnetic tape 3 located between the tape guides 5 and 6 so that it can be pulled out to the outside of the tape cassette. are formed respectively.

12 is the opening I1, 11' to protect the exposed magnetic tape 3 from dust or damage.
This is an opening/closing lid that can be opened and closed, and is rotatably supported by a support shaft 13at13b provided on the left shell 8.

The state shown by the solid line in FIG. 2 is the lid closed state, and the state shown by the chain line is the lid open state. It is possible to pull it outward and wrap it around a known rotating magnetic head drum, thereby recording or reproducing signals.

14a and 14b are small tape cassettes shown in FIG.
In other words, the left shell 8 and the right shell 9 are connected such that the distance between the center axes of the reels 1 and 2 is l1, and a small magnetic material with the distance between the center axes of the two reel drive shafts is l1. This is a positioning hole into which a cassette positioning pin is inserted when the cassette is attached to a tape device.

Reference numerals 15a, 15b and 16 are engagement holes for engaging required members when the small tape cassette shown in FIG. 1 is attached to a cassette adapter according to the present invention, which will be described later.

The present invention provides a small tape cassette as illustrated in FIG.
The present invention provides a cassette adapter that can be applied to large-sized magnetic tape devices such as 12>11), and examples thereof will be described with reference to FIGS. 4 to 6.

First, in FIG. 4, reference numeral 17 denotes an upper plate portion 17a having a size and shape applicable to the large magnetic tape device.
, lower plate part 17b, back part 17c, both side parts 17d, 17
The upper plate part 17a is provided with an opening 18 for storing the small tape cassette shown in FIG. An opening 20 is provided to enable extraction to the outside.

Note that the opening 18 is connected to a lid 38 as shown by the chain line in FIG.
It is designed to be opened and closed by.

Here, the small tape cassette shown in FIG.
When the left shell 8 is inserted, the engagement pins 21a and 21b protruding from the lower plate part 17b of the case 17 are fitted into the engagement holes 15a and 15b provided in the lower plate part of the left shell 8. 8 is positioned.

On the other hand, an engagement pin 22 is inserted into an engagement hole 16 provided in the lower plate portion of the right shell 9.

23 is an operation lever integrally formed at one end of the drive member 24, and the drive member 24 has a pin protruding from the upper surface of the lower plate portion 17b of the case 17 in a long hole 27at27b formed therein. 25 and 26 are inserted, so that it can be moved linearly in the longitudinal direction, that is, in the direction of arrow B and the opposite direction.

The engagement pin 22 is provided to protrude from a part of the drive member 24, and when the drive member 24 moves in the direction of arrow B, it remains engaged with the engagement hole 16 of the right shell 9 and moves the right shell 9 to the same position. It is moved in the direction of arrow B within the plane.

Reference numeral 28 denotes a tension spring that biases the operation lever 23 to protrude from the case 17, that is, to position the drive member 24 to the left as shown in FIG. It is stretched between spring hooks provided at 17b.

Reference numeral 29 designates a latch pin implanted at the tip of the drive member 24 to constitute a latch mechanism for latching the drive member 24 in the pushed-in state with a latch arm 39 to be described later.

A first tape extension arm 30 is rotatably supported by a support shaft 31 on the upper surface of the lower plate portion 17b of the case 1T, and its tip can be positioned within the opening 11 of the left shell 8. and is capable of engaging the magnetic tape 3 crossing the opening 11 by rotating the first tape extension arm 30 to the left, and pulling out the magnetic tape 3 from the opening 11 to the outside of the left shell 8. One tape expansion pin 32 is implanted.

Note that the first tape expansion arm 30 is moved by the movement of the drive member 24 in the direction of arrow B.
The first tape expansion pin 32 is pressed by the drive pin 36 implanted in the area (hereinafter referred to as This position is called the non-operating position) to the sixth position.
As shown in the figure, it is adapted to be rotated to the left to a position located outside the left shell 8 (hereinafter, this position will be referred to as the operating position).

Although not shown, the first tape extension arm 30 is biased to rotate clockwise by a spring so that it is located in the non-operating position as shown in FIG. 4 when the operation lever 23 is not pushed in. By the cage and the stopper,
The amount of right rotation is controlled.

A second tape extension arm 33 is rotatably supported on the upper surface of the lower plate portion 17b of the case 17 by a support shaft 34, and a magnetic tape 3 extending across the opening 11' of the right shell 9 is attached to the tip end of the second tape extension arm. A second tape expansion pin 35 is implanted so that the tape can be pulled out to the outside of the right shell 9.

This second tape extension arm 33 is connected to the drive member 24
4, the drive member 24 is pushed by the drive pin 37 installed near the tip of the drive member 24, and the second tape spreader pin 35 is moved toward the right shell 9 as shown in FIG. so that it is rotated clockwise from a location located within the opening 11' and on the back of the magnetic tape 3 (non-operating position) to a location located outside the right shell 9 (operating position) as shown in FIG. It has become.

Although not shown, the second tape extension arm 33 is urged to rotate counterclockwise by a spring so that it is located in the non-operating position as shown in FIG. 4 when the operation lever 23 is not pushed in. , and by the stopper,
The amount of left rotation is limited.

Reference numeral 39 denotes an L-shaped latch arm rotatably provided in the case 17 by a support shaft 40, which is engageable with the latch pin 29 of the drive member 24, and is capable of adjusting the movement stroke of the drive member 24 in the direction of arrow B. The driving member 24 is configured to be latched at the terminal end thereof into the pushed-in state shown in FIG.

A latch release button 41 is formed at the other end of the latch arm 39, and is exposed through a window hole 42 formed in the side surface 17e of the case 17 so that it can be pressed with a finger or the like from outside the case 17. I am forced to do so.

Further, the latch arm 39 is urged to rotate clockwise by a spring (not shown).

Although not shown, the lower plate portion 17b of the case 17
Needless to say, holes are provided for the reel drive shafts to be inserted therein so that the two reel drive shafts of the large magnetic tape device can be engaged with the reels 1 and 2.

Next, the operation and operation of this embodiment will be explained.

First, the lid 38 of the case 17 is opened, and a small tape cassette in which the left shell 8 and the right shell 9 are combined as shown in FIG. 1 is inserted into the case 17 through the opening 18 (the state shown in FIG. 4).

In this case, the engagement holes 15a of the left shell 8 and the right shell 9
, 15b and 16 have engaging pins 21a2 as described above.
lb and 22 are inserted, and first and second tape expansion pins 32.35 are located in each opening 11.11' of the left shell 8 and right shell 9.

Further, in this case, the opening/closing lid 12 of the small tape cassette may be opened by hand and inserted into the case 17.
The lid may be automatically closed by appropriate means provided in the case 17 upon insertion into the case 17.

Thereafter, the screw 10 is loosened so that the right shell 9 can be easily separated from the left shell 8, and the lid 38 is closed.

Note that the lid 38 is not limited to a rotating type, but may be a sliding type.

Next, when the operating lever 23 is pushed in against the spring force of the tension spring 28 and the drive member 24 is moved in the direction of arrow B,
Latch pin 29 is latched by latch arm 39;
The operating lever 23 is latched in the pushed-in state shown in FIG.

In this state, the operating lever 23 is attached to the side surface 1 of the case 17.
It is configured to be flush with 7d.

As the driving member 24 moves in the direction of the arrow, the right shell 9 is moved in the direction of the arrow B by the engagement pin 22 and separated from the left shell 8.

The amount of movement is determined by the amount of movement of the drive member 24, that is, the amount of pushing of the operating lever 23, and this is because the distance between the axis of the reel 1 of the left shell 8 and the axis of the reel 2 of the right shell 9 is l2. It is set to be.

On the other hand, as the drive member 24 moves in the direction of arrow B, the first tape expansion arm 30 is rotated to the left by the pin 36.
The second tape extension arms 33 are also rotated by pins 37 and brought from their non-operating positions to their operating positions.

As a result, the first and second tape expansion pins 32.35
pulls out the magnetic tape 3 from the small tape cassette and brings it to the opening 20 of the case 17 (see FIG. 6).

Therefore, in this state, it can be mounted on a large magnetic tape device in which the distance between the axes of the two reel drive shafts is 12, and the well-known tape drawing means can be installed from the opening 20 of the case 17. At this point, the magnetic tape 3 is pulled out, wound around a rotating magnetic head drum, and recording or reproduction can be performed.

If you wish to obtain a small tape cassette as shown in FIG. 1 again from the state shown in FIG. 6, first push the latch release button 41 in the direction of arrow C with your finger or the like.

Then, the latch pin 29 is disengaged, and the drive member 24 and operating lever 23 are moved back to the left by the tension spring 28.

Accordingly, the first and second tape extension arms 30,
33 is rotated back by a return spring (not shown) from the operating position shown in FIG. 6 to the non-working position shown in FIG. .

Note that it is effective to provide suitable guide means to move the right shell 9 linearly, smoothly and reliably within the same plane.

Here, the first and second tape expansion arms 30,
33 returns, naturally the magnetic tape 3 that had been pulled out becomes slack, but this can be done by manually rotating either the left or right reel in the winding direction after the mechanism returns to the state shown in Figure 4. However, when it is attached to a large magnetic tape device, when the latch is released by pressing the latch release button 41, either the left or right reel is moved in the winding direction by the reel drive shaft. The magnetic tape may be rotated to automatically absorb the slack of the magnetic tape.

After returning to the state shown in FIG. 4, the lid 38 of the case 17 is opened.

At this time, the left shell 8 and the right shell 9 are in contact with each other so that they can be easily separated, so by tightening the screw 10, the two shells 8 and 9 are firmly connected.

If it is taken out from the opening 18 of the case 17 in this state, a small tape cassette as shown in FIG. 1 can be reproduced, and it can be applied to a small magnetic tape device in which the distance between the axes of the two reel drive shafts is 11.

As is clear from the above description, the cassette adapter of the present invention is capable of handling two magnetic tapes recorded by a small, lightweight (for example, portable) cassette-type magnetic tape device with a narrow spacing between the axes of two reel drive shafts. This makes it possible to play back and record on a large cassette type magnetic tape device with a wide spacing between the axes of the two reel drive shafts, and its effects are very significant.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view of an example of a small tape cassette that can be applied to the present invention, FIG. 2 is a side sectional view thereof, FIG. 3 is a sectional view taken along line A-A in FIG. 1, and FIG. FIG. 1 is a plan view of essential parts of an embodiment of the present invention that houses a small tape cassette, FIG. 5 is a side sectional view thereof, and FIG. 6 is a plan view of essential parts of the embodiment of the present invention in an operating state. . 1, 2... Reel, 3... Magnetic tape, 11, 11'-... Opening, 17... Case, 18... Opening , 20...opening,
23... Operation lever, 24... Drive member, 30... First tape extension arm, 32...
...First tape extension pin, 33...Second tape extension arm, 35...Second tape extension pin.

Claims (1)

[Claims] 1. A magnetic tape and 1. A magnetic tape capable of being wound with the magnetic tape.
It has a pair of tape reels and an opening that allows the magnetic tape to be drawn out. A cassette adapter that makes it possible to apply a small tape cassette having a tape cassette to a device using a tape cassette larger than the small tape cassette, the adapter has a size and shape that can be applied to said device, and has said tape cassette inside said A small tape cassette. It has a structure that can be removably loaded, and when the small tape cassette is loaded inside, the magnetic tape in the small tape cassette is moved from a first position located in the small tape cassette to the small tape cassette. a pair of magnetic tape expansion means that can be hooked to a second position located outside the tape cassette to be expanded and carried;
A cassette adapter comprising a main opening that allows the magnetic tape brought to the second position to be pulled out of the cassette adapter. 2. The magnetic tape expansion means is located on the back side of the magnetic tape near the opening of the small tape cassette when the small tape cassette is loaded therein,
a tape expansion member that brings the magnetic tape from a first position through an opening of a small tape cassette to a second position close to a main opening, hooks the magnetic tape, expands it, and draws it out;
The cassette adapter according to claim 1, further comprising a drive member that moves the tape expansion member in response to an external operation.