JPS6137690B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette adapter used when, for example, a tape cassette smaller than a standard type is attached to a standard type video tape recorder. A tape cassette adapter that is used to store a small tape cassette in its original form when not in use, when the tape cassette is used in a recording/reproducing machine of a predetermined type,
The external shape of this adapter is made to be almost the same as that of a specified type of tape cassette, and when forming a magnetic tape path using a small tape cassette with a built-in magnetic tape that is stored in the storage section in the adapter as it is, It is an object of the present invention to provide an adapter for a tape cassette in which the adapter is provided with a tape guide to which a tape drawn out from a small tape cassette can be attached so as to be approximately the same as the tape path of the tape at the front part of a predetermined tape cassette. purpose.

If you want to use a small tape cassette used in a recording/playback machine such as a video tape recorder in a recording/playback machine that is equipped with a larger tape cassette, such as a standard type tape cassette, you need to use this small tape cassette. You will need an adapter to convert the tape into a standard tape cassette. This adapter works well when the tape running path of a small tape cassette is configured in the same way as the tape running path of a standard type cassette.
It is sufficient if it simply functions as a housing, such as a concave case body that fits into the rear and both sides of a small tape cassette.
However, tape cassettes whose tape running path is the same as the standard type cannot be made that small because the tape running path is the same, even if the tape cassette is smaller than the standard type. .

Therefore, in order to make a small tape cassette substantially smaller, the tape running path must be different from that of a standard type tape cassette. This cannot be done without reducing the distance between the two. Therefore, when a small-sized tape cassette constructed as described above is used in a standard type recording/reproducing machine, an adapter having a concave shape that merely serves as a housing for the tape cassette is insufficient. That is, when a small tape cassette is installed, it must be possible to change the tape path of the small tape cassette using an adapter so that it can be adapted to a standard type recording/reproducing machine.

The present invention has been made in accordance with the above object, and one embodiment of the tape cassette adapter according to the present invention will be described below.

Figures a, b, c, and d are smaller than standard type cassettes used when attached to a recording/reproducing apparatus such as a standard type video tape recorder, for example, used when attached to a portable type recording/reproducing apparatus. These are a plan view, a side view, a rear view, and a bottom view of a small cassette with a small amount of tape. Fig. 2 is a plan view with the upper half of this small cassette removed, Fig. 3 is a cross-sectional view, and Figs. 4 and 5. 6 and 6 are partially enlarged explanatory views of the small cassette.

In the figure, A is a small cassette that is smaller than a standard type tape cassette and remains in the same shape both when in use and when not in use. It consists of a protective front lid 3, which has a hinge portion 4 formed by thinly molding a portion of resin such as polypropylene, and is normally opened by the action of a leaf spring 5. The front lid 3 is attached to the upper half 1 while being biased in the closing direction. Hole 6 in lower half 2
is formed, and a protrusion 7 is formed on the front cover 3. When the front cover 3 is closed, the protrusion 7 is engaged with the hole 6, and the front cover 3 is locked. . By pressing the protrusion 7 and moving it backward, the locked state between the protrusion 7 and the hole 6 is released, and the front cover 3 can be rotated and opened against the repulsive force of the leaf spring 5. It's becoming like that.

A supply reel 8 and a take-up reel 9 are disposed in this small cassette A, and the distance between the supply reel 8 and take-up reel 9 is such that it cannot be installed with only this small cassette A. The distance is shorter than the distance between the supply side and the take-up reel disk of a standard type recording/reproducing device. Then, the magnetic tape 10 is arranged so that the magnetic tape 10 runs along a predetermined running path between the supply reel 8 and the take-up reel 9.
0 is placed. That is, the magnetic tape 10
is the guide pole 11, 12 from the supply side reel 8.
After passing through the film, the film is wound onto the winding reel 9. An uneven groove 14 is formed on the lower surface of the flange 13 under the supply reel 8, and a groove 14 is formed at a predetermined position of the lower half 2 corresponding to the uneven groove 14 of the lower flange 13 to engage with the uneven groove 14. Normally, the supply reel 8 is urged toward the lower half 2 by the action of a leaf spring 16 attached to the upper half 1, and the uneven grooves 14 and 15 are As a result, the supply reel 8 is fixed and the magnetic tape wound around the supply reel 8 is prevented from loosening. Note that when the small cassette is installed in the recording/reproducing device, this supply reel 8
is lifted by the supply side reel disk 80 of the recording/reproducing device by a specified amount toward the half 1 side against the repulsive force of the leaf spring 16, and the latched state between the uneven grooves 14 and 15 is released. . That is, a hole 17 for inserting a supply reel disk 80 of the recording/reproducing device is formed in the lower half 2 at a position corresponding to the supply reel 8 . will be done. The take-up reel 9 is inserted into a shaft 18 fixed to the lower half 2 and is rotatable about the shaft 18. This shaft 18
To attach it to the lower half 2, for example, a groove 19 is formed in the lower part of the shaft 18, and this groove 19
A protrusion 20 that fits into the lower half 2 is formed in advance, and the shaft 18 is screwed onto the lower half 2 with the screw 21 with the protrusion 20 fitted into the groove 19. 18 can be easily attached because it does not spin idle during screwing. Teeth 23 are formed on the outer periphery of the lower flange 22 of the take-up reel 9, and cutouts 2 are provided at predetermined locations on the lower half 2 so that, for example, gears can be engaged with the teeth 23.
4 is formed. Then, the take-up reel 9 is rotated by a predetermined driving force transmission mechanism such as a gear that meshes with the teeth 23, and the magnetic tape is wound from the supply reel through a predetermined travel path to the take-up reel. become.

This take-up reel 9 is provided with a brake mechanism so that the take-up reel 9 does not rotate when the small cassette A is not attached to the recording/reproducing apparatus. This brake mechanism includes, for example, a pawl 25 that engages with teeth 23 of the lower flange 22 of the take-up reel 9, and this pawl 25 engages with the shaft 2 of the lower half 2.
6 and is biased by the action of the spring 27, the claw 25
is engaged with the teeth 23 of the lower flange 22, so that the take-up reel 9 does not rotate and the magnetic tape does not loosen. In order to release this latched state and allow the take-up reel 9 to rotate, a pin is inserted through the hole formed in the lower half 2, and the pin is used to push the pawl 25 against the repulsive force of the spring 27. 25 and lower flange 22 of the take-up reel.
The winding reel 9 is placed in a free state and can rotate.

In addition, in the upper half and lower half of the small cassette,
A locking recess and a protrusion are formed at the joint end of the upper half and the lower half, and the upper and lower halves are temporarily fastened by fitting the protrusion and the recess, and then screwed together. Strongly connect the two.

FIGS. 7, 8, 9, and 10 are explanatory diagrams of an adapter used when the above-mentioned small cassette A is attached to a standard type recording/reproducing apparatus.

In the figure, reference numeral B denotes an adapter that can accommodate the small cassette A therein and has a size and shape that allows it to be attached to a standard type recording/reproducing device.

The frame of this adapter B consists of a lower half 51 and an upper half 52, and the lower half 51 is formed with a storage section 53, which is a notch for storing the upper cassette A. This housing section 53 has protrusions 54, 55, 56, 57 formed at its ends to support the small cassette A, while the lower half 2 of the small cassette A has these protrusions 54, 55, 56, 57. Recesses 28, 29, 30, and 31 are formed corresponding to the positions, and these projections and recesses help position the small cassette A, particularly in the vertical direction. When these protrusions and recesses are fitted, the bottom surface of the small cassette and the bottom surface of the adapter are made to be approximately on the same plane. Further, pins 58 and 59 are implanted in the protrusions 54 and 55, and these pins 58 and 59 are inserted into the holes 32 and 33 formed in the lower half 2 of the small cassette A, thereby allowing the small cassette to open. In addition to positioning A, the pin 58 also serves to release the brake of the take-up reel 9 of the small cassette A. That is, the position of the pin 58 and the hole 32 is such that the pin 58 is in the hole 3
The position is such that the pin 58 lifts the pawl 25, which is the brake mechanism of the take-up reel 9 of the small cassette A, when the small cassette A is inserted into the reel 2.

When the adapter B with the small cassette A inserted therein is attached to a standard type recording/playback device, the supply side reel disk of the two reel disks of the recording/playback device is inserted into the supply side reel 8 of the small cassette A. However, since the take-up reel disk cannot be inserted into the take-up reel 9, the adapter B at the position corresponding to the position of the take-up reel disk is
A gear 60 is attached to the lower half 51 of the winding-side reel disk, which is driven by the insertion of the winding-side reel disk. Further, when the small cassette A is stored in the adapter B, a gear 61 that meshes with the teeth 23 of the lower flange 22 of the take-up reel 9 of the small cassette A is attached to the lower half 51 so as to mesh with the gear 60. , and the state of engagement between the claw and the tooth is pin 58.
Since the magnetic tape is released by , the driving force of the recording/reproducing machine is transmitted to the supply reel 8 and take-up reel 9 of the small cassette A, and the magnetic tape begins to run. That is, even if you try to install small cassette A into a standard type recording/reproducing machine, the relative positions of the supply side reel and take-up side reel of small cassette A will be the same as the supply side reel disk and the take-up side reel disk of the recording/playback machine. Since it is not the same relative position as
For example, if the supply reel disk is placed on the supply reel, a gear similar to that of the take-up reel is provided at the position of the take-up reel disk, and the driving force is transferred between this gear and the take-up reel of the small cassette. By providing a transmission means, the driving force of a standard type recording/reproducing machine can be transmitted to the small cassette A.

Further, notches 34 and 35 are formed on both shoulders of the upper half 1 of the small cassette A, and walls 62 and 63 are formed in the upper half 52 of the adapter B in correspondence with the positions of the notches 34 and 35. When the upper half 52 is aligned with the lower half 51 and, for example, screwed together, the small cassette A will not come out from the adapter B, and the top surface of the small cassette and the top surface of the adapter will be on almost the same plane. It is becoming like this.

When using the above-mentioned small cassette A by attaching it to a recording/playback device exclusively for this small cassette, such as a portable type recording/playback device, attach a standard type cassette to the standard type recording/playback device. As in the case of use, when the small cassette is inserted into the pop-up mechanism of the recording/reproducing device and the pop-up mechanism is moved to the operating position, the front lid of the small cassette A opens and the front and bottom surfaces of the small cassette A open. The loading pole, capstan, etc. of the recording/reproducing device are inserted into the inside of the magnetic tape in the notches 36, 37, and 38 formed in the section, and the supply reel disk of the recording/reproducing device is inserted into the supply reel of the small cassette. The teeth of the lower flange of the take-up reel mesh with the gear-like driving force transmission mechanism of the take-up reel in adapter B of the recording/reproducing device, and the driving force of the recording/reproducing device is also transmitted to the take-up reel. will be transmitted. Further, the convex portions of the recording/reproducing device are aligned with the concave portions 28, 29, 30, and 31 formed in the lower half 2 of the small cassette, and the holes 32 of the lower half,
The pin of the recording/reproducing device is inserted into 33, and the position of the small cassette A is regulated within the recording/reproducing device, and the lock state of the claw on the take-up reel of the small cassette A is released, allowing the magnetic tape to run. maintained. Then, the magnetic tape is unwound from the small cassette by the loading pole, is attached to the magnetic head, and the driving force is transmitted to the take-up reel so that the magnetic tape runs along a predetermined running path, and recording and playback are performed. It can be done.

In addition, when using this small cassette A with a standard type recording/playback device, attach the small cassette A to the adapter B, and then attach this adapter B to the recording/playback device in the same way as when using a standard type cassette. Perform recording and playback. That is, first, with the front lid of small cassette A opened, small cassette A is stored in the storage section of adapter B, and in this stored state, only the magnetic tape wound on the supply reel is opened. Pull out the specified amount from the front lid and insert this magnetic tape into adapter B.
The magnetic tape is attached to the guide poles 64, 65, and 66 provided in the adapter B, and the magnetic tape is arranged in the same manner as the magnetic tape in a standard type cassette, and the upper half of the adapter B is aligned with the lower half, and both are screwed together. Since the small cassette A stored in the adapter B is constructed in the same way as a standard type cassette, it can be used for recording and reproducing by attaching it to a standard type recording and reproducing machine. That is,
When the small cassette is attached to the adapter, the gear 61 of the adapter meshes with the teeth of the lower flange 22 of the take-up reel 9, and the pin 58 of the adapter engages the claw 2.
5 against the repulsive force of the spring, the take-up reel 9 is released from the locked state, and the driving force of the take-up reel disk is transferred to the gear 60,
61. Conversely, when the small cassette is taken out of the adapter, the engagement between the take-up reel 9 and the gear 61 is disengaged, and the pin 58 is removed from the small cassette, so that the claw 25 is restored by the repulsive force of the spring 27. , the take-up reel 9 is in a locked state.

In order to attach the magnetic tape in the small cassette to the guide pole of the adapter, for example, press the supply reel directly with your hand to release the locked state of the supply reel, and then open the front cover of the magnetic tape. Attach the small cassette to the bottom half of the adapter, and attach the pulled-out magnetic tape directly to the guide pole of the adapter by hand, or attach the unlocked magnetic tape to a suitable location. It can be attached using a pull-out mechanism.

Furthermore, if the gear 61 is configured to have a small degree of freedom in position setting, the gear 61 may be moved when, for example, a small cassette is attached to or removed from the adapter, and the gear 61 may be moved to the gear 60 during attachment. By allowing the cassette to mesh with the teeth of the lower flange of the take-up reel, it becomes convenient to attach and remove the small cassette from the adapter.

As mentioned above, for example, by constructing an adapter for a small tape cassette, such an adapter allows the small tape cassette to be attached to a predetermined type of recording/reproducing machine.
Furthermore, a small tape cassette can be made smaller because, for example, the distance between the supply reel and the take-up reel can be reduced. Then, the tape can be drawn out from the tape cassette made small in size to serve as a tape path in, for example, a standard type recording/reproducing machine, and furthermore, the tape can be drawn out from the tape cassette made small enough to be used as a tape path in a standard type recording/playback machine. Even if the interval is different from the interval between the recording and reproducing machine's supply side reel disk, there is no need to be able to move and set the take-up side reel disk, for example, and the driving force of the recording and reproducing machine can be applied to the reel of the tape cassette. This allows the magnetic tape to run smoothly. In addition, since the reel disk on the take-up side does not need to be configured to be movable when the reel disks are lined up, the mechanism of the reel disk becomes extremely simple, the reel disk is less likely to break down, and the reel drive mechanism is highly durable. Become something. Furthermore, by providing a member on the adapter that can unlock the reel rotation prevention mechanism of the tape cassette when the tape cassette is stored in the adapter, it is possible to prevent the reel from rotating when the tape cassette is stored in the adapter. The wound magnetic tape can now be pulled out from the tape cassette, making it easier to form tape paths.

As described above, the tape cassette adapter according to the present invention is used to attach a small tape cassette that is smaller than a predetermined type of tape cassette and remains in the same shape both when in use and when not in use to a predetermined type of recording/reproducing machine. In this case, the adapter is used to store a small tape cassette, and the external shape of the adapter is almost the same as that of a predetermined type of tape cassette, and the adapter can be stored in the storage section in the adapter as it is. When pulling out only the magnetic tape from a small tape cassette with a built-in magnetic tape inside to form a tape path, the tape is pulled out from the small tape cassette so that it is almost the same as the tape path of the tape described above for a given type of tape cassette. Since the adapter is provided with a tape guide to which a tape can be attached, if such an adapter is used, even a tape cassette with a tape path different from the tape path in a predetermined type of recording/playback machine can be attached to a predetermined type of recording/playback machine. It has become possible to record and play back tapes, and therefore the tape cassette to be stored in the adapter can actually be made into a small tape cassette, and moreover, the tape path can be formed while the tape cassette is stored in the adapter. In addition, the force required to pull out the magnetic tape contained in a small tape cassette and form a predetermined tape path is small, making the tape path forming process extremely easy.Furthermore, the configuration of this adapter is extremely simple. It has features such as being

[Brief explanation of the drawing]

1A to 6 are explanatory diagrams of a small tape cassette housed in an adapter according to the present invention, and FIGS. 7 to 10 are explanatory diagrams of embodiments of the adapter according to the present invention. A...Small cassette, B...Adapter, 51...Lower half, 52...Upper half, 53...Storage section, 58,5
9... Pin, 60, 61... Gear, 64, 65, 66
...Guide pole.

Claims (1)

[Scope of Claims] 1. When a small tape cassette that is smaller than a predetermined type of tape cassette and remains in the same shape both when in use and when not in use is used in a predetermined type of recording/reproducing machine, this small-sized tape cassette This is a tape cassette adapter that is used to store a tape cassette.The external shape of this adapter is almost the same as that of a specified type of tape cassette, and the magnetic tape is stored inside the adapter in its original shape. When drawing out only the magnetic tape from the built-in small tape cassette to form a tape path, the tape drawn out from the small tape cassette is drawn out so that it is almost the same as the tape path of the tape at the front of the specified type of tape cassette. An adapter for a tape cassette, characterized in that the adapter is provided with a tape guide that can be attached. 2. In the tape cassette adapter according to claim 1, when the adapter containing a small tape cassette is installed in a predetermined type of recording/playback machine, the tape cassette adapter is directly connected to the reel drive mechanism of the predetermined type of recording/playback machine. A transmission mechanism that transmits the driving force from the reel drive mechanism is attached to the reel of a small tape cassette that does not have a cassette. 3. The tape cassette adapter according to claim 1 is provided with an unlocking mechanism that unlocks the reel rotation prevention mechanism built into the small tape cassette when the small tape cassette is stored. thing.