JPS6325558Y2 - - 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 installed in a standard type recording/reproducing machine. A tape cassette adapter that is equipped with a regulating mechanism that prevents changes in the mounting status, so that no problems occur when the tape cassette mounting adapter is attached to a recording/playback device and used for recording and playback, for example. The purpose is to provide

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 larger than this small tape cassette, for example, a standard type tape cassette, you must use a small tape cassette. You will need an adapter to convert it to a standard tape cassette. If the tape path of a small tape cassette is configured the same as that of a standard tape cassette, this adapter may simply serve as a housing. Even though it is small, it is not that small because the tape path is the same as that of a standard type tape cassette. Therefore, in order to make a small tape cassette substantially smaller, for example, the supply reel in the small tape cassette must be In order to make the distance from the take-up reel smaller than that of a standard type tape cassette, and to record and play back a small tape cassette configured in this way on a standard type recording/playback machine, an adapter can be used to connect the small tape cassette to the standard type. The tape path must be changeable to accommodate standard types of recording/playback equipment.

The present invention has been made in accordance with the above object, and examples thereof will be described below.

FIG. 1 is a perspective view of a tape cassette, which is smaller than a standard type tape cassette used in, for example, a standard type recording/reproducing machine, with its front lid open.

In the figure, A is a small cassette, and the frame of this small cassette A consists of an upper half 1, a lower half 2, and a front cover 3 for protecting the tape. It is rotatably attached to the upper part by a support shaft 4. One end of the sliding piece 7, which is held so as to be able to slide in the groove by being pressed by a substantially U-shaped spring 6 inserted into a groove 5 bored in the side surface of the upper half 1, is attached to the front cover 3. When the front cover 3 is in the closed state, the front cover 3 is maintained in that state, and when the front cover 3 is opened, the open state is maintained.

A supply reel 8 and a take-up reel 9 are arranged in the small cassette A, and the distance between the supply reel 8 and the take-up reel 9 is such that the distance between the supply reel 8 and the take-up reel 9 is a standard type that cannot be installed only in the small cassette A. The distance is shorter than the distance between the supply reel disk and the take-up reel disk of the recording/reproducing machine.
Further, the magnetic tape 10 is arranged such that it runs along a predetermined running path between the supply reel 8 and the take-up reel 9. That is, the magnetic tape 10 is moved from the supply reel 8 to the guide pole 1.
1 and 12, and is then wound onto the take-up reel 9. An uneven groove is formed on the lower surface of the lower flange of the supply reel 8, and an uneven groove is also formed at a predetermined position of the lower half 2 corresponding to the uneven groove of the lower flange. The supply reel 8 is biased toward the lower half 2 by the action of the attached leaf spring, and the uneven grooves engage with each other.
The supply reel 8 is fixed to prevent the magnetic tape wound on the supply reel 8 from loosening. still,
When the small cassette A is installed in the recording/reproducing machine, the supply reel 8 is lifted by the supply reel disk of the recording/reproducing machine over a specified amount toward the half 1 side against the repulsive force of the leaf spring, and the uneven grooves are aligned with each other. The mesh is released and it becomes possible to rotate. That is, a hole 13 for inserting the supply reel disk of the recording/reproducing machine is formed in the lower half 2 at a position corresponding to the supply reel 8, so that the supply reel disk can be inserted into the supply reel 8. become. The take-up reel 9 is inserted into a shaft 14 fixed to the lower half 2 and is rotatable about the shaft 14.

A brake mechanism is disposed on the take-up reel 9 so that the take-up reel 9 does not rotate when the small cassette A is not installed in the recording/reproducing machine. This brake mechanism consists of a brake that presses the upper surface of the peripheral edge of the lower flange 15 of the take-up reel 9. This brake is inserted into a shaft formed integrally with the lower half 2, and is operated by a spring. When the brake is pressed and energized, the shoe portion of the brake comes into pressure contact with the surface of the lower flange 15, so that the take-up reel 9 does not rotate and the magnetic tape does not loosen. Furthermore, when the small cassette A is attached to a recording/reproducing machine or an adapter described below, a force is applied that resists the repulsive force of the spring, the shoe part of the brake is separated from the lower flange 15 surface, and the take-up reel 9 can rotate. It becomes like this. The rotation of the take-up reel 9 is different from that of the supply reel 8,
This is accomplished by a driving force transmission medium that meshes with teeth 16 formed on the peripheral side surface of the lower flange 15 of the take-up reel 9. Therefore, when the small cassette A is attached to the adapter for use in a recording/reproducing machine exclusively for this small cassette or a standard type recording/reproducing machine, the lower half 2 has a notch so that the driving force transmission medium can mesh with the teeth 16. A portion 17 is formed.

FIG. 2 is a plan view of the tape cassette adapter according to the present invention with the upper half removed, and FIG. 3 is an explanatory view of the main parts.

In the figure, B is an adapter having the same external shape as a standard type tape cassette, and this adapter B consists of a front cover 28, an upper half 29, a lower half 30,
A storage section A' is configured to store a small cassette A.

In addition, when the front lid 3 of the small cassette A is opened and placed in the storage section, the lower half 30 has a tape pull-out member located in the notch 18 formed in the lower half 2 of the small cassette A. A tape pull-out mechanism is provided for pulling out the magnetic tape 10 in the cassette A to form a predetermined tape path. This tape pull-out mechanism consists of an operating lever section,
It consists of a loading part and a driving force transmission medium part.
That is, if the magnetic tape is set in the adapter with the front cover open without pulling out the magnetic tape from the small cassette A, the loading levers 31 and 32 will be located in the notch 18 of the small cassette A. Guide rollers 33, 34 provided at the tip of 32, operating lever 3
5. When the operating lever 35 is moved from the two-dot chain line position to the solid line position in FIG. 2, the loading lever 31,
32 is rotated from the two-dot chain line position to the solid line position in FIG. 2, and the magnetic tape in small cassette A is pulled out by guide rollers 33 and 34 to form a predetermined tape path. As the medium part, for example, connectors 36 and 37 connected to the operating lever 35, and L connected to the connector 36,
A lever 38 connected to the L-shaped lever 38, a lever 39 connected to the L-shaped lever 38, and a lever 4 connected to the lever 39.
0, a gear 41 provided integrally with the lever 40, a gear 4 provided integrally with the loading lever 31;
2 and a gear 41, a rotary lever 44 connected to a connector 37 and a loading lever 32. and,
When the operating lever 35 is rotated from the two-dot chain line position to the solid line position, the connector 37 is moved and the rotary lever 44 is rotated clockwise around the support shaft. Therefore, the loading lever 32 moves around the spindle from the position shown by the two-dot chain line to the position shown by the solid line, and the magnetic tape is pulled out from the small cassette by the guide roller 34, and the connector 3
6, the L-shaped lever 38 rotates clockwise about the spindle, moving the lever 39 to the right in FIG. As a result, the belt 43
, the loading lever 31 is rotated clockwise from the two-dot chain line position to the solid line position, the magnetic tape is pulled out from the small cassette by the guide roller 33, and the standard type magnetic tape is pulled out by the guide rollers 33 and 34. A tape path that is substantially the same as the tape path of the tape cassette is now formed.

51 and 52 are holes formed in the lower half 30 of the adapter, of which the hole 51 is the hole 13 of the small cassette A installed in the storage section A' of the adapter B.
When the small cassette A mounting adapter B is installed in the recording/reproducing machine,
The supply side reel disk of the recording/reproducing machine has holes 51,1.
3 into the supply reel 8, and the hole 52 is for inserting a finger, for example, into the hole 52 when removing the small cassette from the small cassette mounting adapter. Press and insert small cassette A into the adapter storage compartment.
This is to push it out from A′.

53 is the small cassette A in the adapter storage section.
A' is a gear that meshes with the teeth 16 on the peripheral side of the lower flange 15 of the take-up reel of the small cassette A, and is driven by the take-up reel disk of the recording/reproducing machine. It drives the take-up reel 9 of.

Reference numeral 54 denotes a lid disposed in the storage section A' of the adapter B, and the lid 54 is located at a position corresponding to the storage section A' when the lid 54 is closed.
is configured to urge the small cassette A stored in the storage section A' in the mounting direction and to regulate the position of the small cassette A stored in the storage section A'. When the lid 54 is closed after being attached to the section A', the position of the small cassette A is regulated. Enter the side reel,
Even if a force to slightly lift the small cassette A is applied, the small cassette A is prevented from being displaced by the lid 54. Therefore, when the small cassette A is installed with the lid 54 closed, its position is completely regulated and no displacement occurs, so that the gear 53 and the lower flange peripheral side of the take-up reel 9 are The meshing with the teeth 16 never comes out of alignment.

The lid body 54 is composed of a frame portion 55 molded from, for example, polypropylene resin, and a window portion 56 molded from transparent acrylic resin provided inside the frame portion 55. A plurality of concave portions formed in the window portion 56 are disposed so as to fit into a plurality of convex portions, and these fitting portions are welded and integrated. One end of the lid 54 is attached to a predetermined position on the upper half of the adapter so that it can be rotated to open and close.

Further, a locking mechanism is provided at the tip of the lid 54 so that the lid 54 is locked when the lid 54 is closed. This locking mechanism includes, for example, a resilient part 57 having a substantially U-shaped cross section integrated with a frame part 55 at the tip of the lid, a protrusion 58 on the outer surface of the resilient part 57, and a A recess 59 into which the resilient portion 57 enters when the retractor 54 is closed is formed in the upper half of the adapter. A hooking portion 60 is formed. That is, when the lid body 54 is closed, the resilient portion 57
is deflected and enters the recess, and when it enters the recess, it restores itself and the protrusion 58 is engaged with the latch 60, so that the hook lid body 54 does not open when no force in the bending direction is applied to the resilient part 57. -ing In addition, the lid body 54
To open the lid, apply a force in the bending direction to the resilient portion 57 and release the latch between the protrusion 58 and the latch portion 60 to release the lid, and then rotate the lid. Just open it.

Note that if the inner surface of the lid 54 is curved, for example, in the shape of a substantially circular arc at the center, when the small cassette A is attached to the storage section A' and the lid is closed, the lid 5
The small cassette A is strongly pressed by the substantially arc-shaped protrusion formed on the inner surface of the cassette 4 and the elastic force of the lid 54 itself, so that the small cassette A is less likely to wobble when stored, for example. gear 33
If the meshing state between the teeth 16 and the tooth 16 is disengaged, there will be no scratches at all.

Further, 61 and 62 are protruding stripes provided on the inner wall of the storage portion of the adapter B, and the protruding stripes 61 and 62
The grooves 19 and 20 of the small cassette A are inserted into the grooves 63 and 6 to position the small cassette during storage and to prevent incorrect insertion of the small cassette A in the front and back direction.
Numerals 4, 65, and 66 are elastic protrusions that clamp the small cassette A during installation to prevent the small cassette from wobbling, and also regulate the posture of the small cassette A at the beginning of installation. Cassette A
This is to ensure that the magnetic tape is always located outside the guide rollers 33 and 34. Also, 6
7 shows that when the front cover of the small cassette A is opened and the small cassette A is installed in the storage compartment A', this front cover 3
This is a support plate that supports the small cassette A.
can only be installed when the front cover 3 is open.

Storage section for adapter B configured as above
Insert the small cassette A into A', and then
When the small cassette A is closed, the ridges 61, 6
2. Not only is it restricted by the protrusions 63, 64, 65, 66, but also the lower surface of the housing of the adapter B and the lid body 5
4, the small cassette A will not wobble at all even if it is subjected to a small amount of external force. That is, even if the small cassette A is attached and the adapter B with the lid 54 closed is attached to the recording/reproducing machine, and the supply reel disk of the recording/reproducing machine enters the supply reel, the small cassette will not close the lid. The gear 53 and the teeth formed on the peripheral side surface of the lower flange of the take-up reel do not rattle due to the action of the elastic force of the body 54 itself, and are therefore driven by the drive of the take-up reel disk. 1
There is no fear of the magnetic tape becoming disengaged from the reel 6, and the driving force that causes the magnetic tape to travel along a predetermined path between the supply reel and the take-up reel is well transmitted to the take-up reel 9. Also, because the small tape cassette was misaligned, the tape pull-out mechanism of the adapter could damage the magnetic tape, which has a tape path that is almost the same as that of a standard tape cassette, or distort the tape path. I've never had one. Furthermore, when recording and playback is finished and the adapter is returned to the state it was in when it was loaded into the recorder and playback machine, a switch is installed on the top of the cassette insertion slot to start the loading motor, especially in front loading type recorder and playback machines. If there is a level difference between the top surface of the adapter and the top surface of the small cassette, the adapter may become stuck in the switch part and the adapter will not be delivered to the insertion slot. However, if a lid is provided as in the above embodiment and the outer surface of the lid is substantially flush with the top surface of the adapter when the lid is closed, the above-mentioned defects will not occur. Moreover, even in the same front-loading type recording/reproducing machine, where a roller is installed above the cassette insertion slot and the cassette is moved in and out by the pressure of this roller, the roller's feeding/input operation is I have never had a problem.

As mentioned above, the tape cassette adapter according to the present invention is an adapter used when storing a tape cassette smaller than a standard type tape cassette and attaching it to a standard type recording or reproducing machine. A lid made of an elastic material is provided corresponding to the storage portion of the adapter, and when the small tape cassette is stored in the storage portion and the lid is closed, the elastic action of the lid itself Since a projection is provided on the inner surface of the lid body to urge the small tape cassette in the mounting direction and to prevent the small tape cassette from shifting within the storage section, the small tape cassette can be mounted on the adapter. For example, when installing an adapter into a recording/playback device, I have never had a problem where the adapter does not attach or detach smoothly, or the tape path is distorted and the tape is damaged. Recording and playback can be performed smoothly without any disadvantages such as the lid becoming unusable, and since these features are achieved by the lid itself, it is possible to use a special member such as a leaf spring for the lid. It has the advantage that it does not need to be provided on the body, and the structure can be simplified accordingly.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a small cassette, and FIGS. 2 and 3 are explanatory diagrams of an embodiment of a tape cassette adapter according to the present invention. A...Small cassette, B...Adapter, A'...
... Storage section, 54 ... Lid body.

Claims (1)

[Scope of utility model registration request] An adapter used when storing a tape cassette smaller than a standard type tape cassette and attaching it to a standard type recording or playback machine, and a lid made of elastic material corresponding to the storage part of this adapter. a body is provided, and when the small tape cassette is stored in the storage part and the lid is closed, the elastic action of the lid itself urges the small tape cassette in the mounting direction; A tape cassette adapter characterized in that a protrusion is provided on the inner surface of the lid so that the small tape cassette does not shift within the storage section.