JPS6349895Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tape cassette adapter used, for example, when installing a tape cassette smaller than a standard type into a standard type recording/playback machine. An object of the present invention is to provide a tape cassette adapter that prevents unnecessary loads from being applied to the drive motor of the recording/playback device when the tape cassette is attached to the recording/playback device and the recording/playback device is operated. shall be.

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 constructed in this way with a standard type recording/playback machine, it is necessary to use a tape cassette that is almost the same as a standard type tape cassette. It must be possible to change the tape path of a small tape cassette so that it can be adapted to a standard type recording/reproducing machine by means of an adapter having a profile of .

The applicant has developed a tape cassette that is substantially smaller than the standard type that previously achieved this purpose.
The applicant has also filed an application for a tape cassette adapter that allows this small tape cassette to be used for recording and reproduction on a standard type recording and reproducing machine that uses a standard type tape cassette.

That is, it is possible to draw out the tape from a small tape cassette placed in the storage section of the tape cassette adapter and form a tape path that is approximately the same as that of a standard type tape cassette.
Furthermore, a tape cassette adapter has been proposed which is provided with a tape guide means that can rewind the tape thus pulled out into a small tape cassette.

However, with the tape cassette adapters proposed so far, the tape is pulled out from a small tape cassette by the operation of the tape guiding means, and after a predetermined tape path has been formed, it is attached to a recording/playback machine for recording/playback. In this case, the load caused by the tape guide means is always applied to the drive motor of the recording/reproducing device, and sometimes this load is so large that recording/reproduction is not driven, the tape does not run, and recording/reproduction is not performed. There may be cases of fear.

The present invention eliminates the above drawbacks, and examples thereof will be described below.

FIG. 1 is a schematic plan view of an embodiment of the tape cassette adapter according to the present invention with the upper half removed, and FIGS. 2 to 15 are partial explanatory views.

In other words, this tape cassette adapter A
The tape cassette B has approximately the same external shape as a standard type tape cassette, and its frame is composed of a lower half 1, an upper half 2, and a rotatable front cover 3. A storage section is configured to store the.

When the operating lever 4 provided on the tape cassette adapter A is moved to the right in FIG. The adapter lid 7 moves to the right against the force of the tape cassette B, and the adapter lid 7, which is the lid for the storage section that stores the small tape cassette B, is disengaged from the engaging portion 8, and the torsion coil spring is released. The adapter lid 7 is rotated and opened by the force of 9 and is configured to stand vertically. That is, when the operating lever 4 is moved to the right in FIG. 1, the adapter lid 7 covering the storage section is automatically opened.

With the adapter lid 7 open, when a small tape cassette B is attached to the storage section with the front lid closed, the tape cassette adapter A is provided with one end 10' protruding into the storage section. A small tape cassette B comes into contact with the lever 10, and the force at this time causes the lever 10 to rotate clockwise in FIG. 1 about the shaft 12 against the spring force of the torsion coil spring 11. , This rotational movement causes a part of the lever 10 to switch _SW1.
When the switch SW 1 is pressed, the switch SW ₁ is turned on. Also, at the same time, lever 10
The other end 10'' is disengaged from a protrusion 49' of a connector 49, which will be described later, and the connector 49 is unlocked.

13 is a lock lever for preventing accidental erasure;
This lock lever 13 is attached to the shaft 12 on the lower side of the lever 10, and is biased clockwise by the torsion coil spring 11.

After the small tape cassette B is installed, when the adapter cover 7 is closed by manually applying a force in the closing direction to the adapter cover 7, the front cover of the small tape cassette B is opened by this closing operation. The lid is opened by a lid mechanism (not shown), resulting in a state as shown in FIG. In addition, when closing the adapter lid 7, move the operating lever 4 to the right in FIG. Then, the force of the coil spring 6 causes the lock portion 5 integrally formed with the operating lever 4 to return to its original position, and is locked.

Reference numeral 14 denotes a lever supported by a shaft 15. Under normal conditions, this lever 14 is biased counterclockwise in FIG. 1 (in FIG. 3) by the force of a torsion coil spring 16. The inclined end side 14' of the lever 14 is configured to be positioned so as to be regulated by the wall portion 18 of the square notch 17 that accommodates the engaging portion 8 of the adapter lid 7.
The lever 14 is configured so that it does not rotate unnecessarily due to the force of the torsion coil spring 16, and the other end side 14'' of the lever 14 is connected to the upright portion 4 of the connector 49, which will be described later.
9'' to lock the connector 49. That is, when the engaging portion 8 of the adapter lid 7 enters the notch 17, the lever 14 tilts. The engaging portion 8 comes into contact with one end 14' of the lever 14, thereby rotating the lever 14 clockwise in FIG. The lock is released. At the same time, the switch SW ₂ is pressed by the engaging portion 8 of the adapter lid 7, and the switch SW ₂ is turned on. The preparation for pulling out is completed.

Note that the lever 10 disables the operation of the tape guide mechanism, that is, the connector 49, which will be described later, unless the small tape cassette B is stored in the storage section of the tape cassette adapter A. If the lid 7 is not closed,
This disables the tape guide mechanism or connector 49, which will be described later.

Reference numeral 19 denotes a lever for both loading and unloading that operates the tape guide mechanism. When this lever 19 is moved, for example, to the right in FIG. 1, a switch SW ₃ provided at the bottom of the lever 19 is turned on. Then, the motor 20 rotates, and the gears 22, 23, 2 are transferred from the worm 21 of the motor 20.
The driving force is transmitted to nodes 4, 25, 26, 27, and 28 in this order.

Among these gears, in the lower part of gear 28,
A tongue piece 29 extending laterally is integrally molded,
At the end of this tongue piece 29, there is a pin 30 extending downward.
is implanted, and this pin 30 is fitted into a V-shaped elongated hole 32 of a V-shaped deformable plate 31. Further, plates 33 and 34 are connected in order to the deformable plate 31, and the plate 3
4 is connected to the loading lever 35 on the winding side, and by the driving force of the motor 20,
When the gear 28 rotates clockwise in FIG. 1 (FIG. 5), the deformation plate 31 and the plates 33 and 34 are pulled by the pin 30 of the tongue piece 29, and the plates 33 and 34 are connected to the plate 34. Loading lever 35
rotates clockwise in FIG. 1 (FIG. 5) about a support shaft 36, and is provided at the tip of the loading lever 35, and the tape from the small tape cassette B is pulled out by a guide pole 37. Then, as shown in FIG. 6, the loading lever 35 reaches the stopper 38 and stops.

A cam body 39 is integrally formed on the upper side of the gear 28, and when the gear 28 rotates in the same direction (clockwise in FIG. 1), the circumferential shape of the cam body 39 causes As a result, the roller 41 that is pivotally supported on one end of the lock member 40 is gradually pressed, and the lock member 40 rotates clockwise in FIG. 1 about the support shaft against the spring force of the tension spring 42. , the guide pole 37 is firmly held by the distal end claw portion of the lock member 40. Although not shown in the drawings, this locking member 40 is formed in two stages, upper and lower, and the guide pole 37 is held by locking the upper and lower parts of this guide pole 37 with this locking member 40. It is being done.

Further, a cam body 43 is integrally formed on the upper side of the tongue piece 29 of the gear 28, and the cam body 43 is in the position corresponding to the start of loading by the loading lever 35 (the state shown in FIG. 7). One end side of the cam portion 43' presses the switch piece to turn on the loading completion detection switch SW ₄ ,
The switch SW ₅ for detecting the completion of unloading is turned off, the loading lever 35 starts loading, the cam body 43 rotates clockwise in FIG. 1, and the loading lever 35 is turned off. When the position of the stopper 38 is reached, the switch SW ₄ is activated at the other end of the cam portion 43'.
is set to the off state.

Also, the loading lever 35 is shown in Fig. 1 (No. 5).
(In the figure) When rotated clockwise, a substantially L-shaped lever 44, one end of which is connected to the loading lever 35, rotates counterclockwise about a support shaft 45.
The plate 46 connected to the other end of the substantially L-shaped lever 44 is pulled to the right in FIG. 1 (FIG. 5).

This plate 46 has a pin 47 implanted in its middle part, and a long hole 48 formed in its tip. A pin 51 hanging down from the back side of the connector 49 is loosely fitted into the elongated hole 48, and the pin 51 is loosely fitted into the elongated hole 48.
A pin 52 is planted on the top side of the pin 5.
A coil spring 53 is stretched between the plate 46 and the pin 47 to draw the plate 46 and the connector 49 toward each other.

A pin 54 is implanted in this connector 49, and a lever 56 that engages with this pin 54 through an elongated hole 55 is disposed.
9 moves to the right in FIG. 1 by the plate 46, the lever 56 rotates clockwise in FIG.
8, the lever 59 integrally formed with the adapter lid 7 is rotated clockwise in FIG. It's starting to lock down. That is, when the loading lever 35 is activated and the tape is being pulled out from the small tape cassette B at the position shown by the two-dot chain line in FIG. 1, for example, the adapter lid 7 is prevented from being opened. It is configured.

Furthermore, an L-shaped lever 60 is connected to the tip of the connector 49, and the connector 49 is connected to the first
When pulled to the right in the figure, the L-shaped lever 60 is rotated counterclockwise in FIG.
The connector 61 connected to the terminal 0 is configured to be pulled downward in FIG.

One end of a lever 63 provided on a support shaft 62 is connected to this connector 61, and when the connector 61 moves downward in FIG. By rotating the lever 63, a guide pole 64 provided at the other end of the lever 63 is moved to a stopper 65 position, and the tape from the small tape cassette B is pulled out by the guide pole 64. Even after the guide pole 64 reaches the position of the stopper 65, the plate 46 is pulled rightward in FIG. 1 against the coil spring 53, so the action of the coil spring 53 causes the guide pole to 64 is crimped onto the stopper 65.

When driving the guide poles 37 and 64 in the loading direction, since the gears 66 and 67 have a one-way clutch structure, the driving force of the motor 20 is transmitted through the gears 22, 23, 24, 25 and the gear 68. Even if it is transmitted to the gear 66, it is not transmitted to the gear 69, so that the take-up reel of the small tape cassette B is not operated.

In addition, 70 is a claw for preventing incorrect insertion when attaching the tape cassette adapter A to a recording/reproducing machine.
Under normal conditions, it is biased counterclockwise in FIG. 1 by a torsion coil spring 71, and one end thereof protrudes from the side wall of the tape cassette adapter. When the connector 61 moves downward in FIG. 1, the pin 72 implanted in the connector 61 rotates the incorrect insertion prevention claw 70 clockwise in FIG. nail 70
is housed in the tape cassette adapter A so that it does not protrude. That is, the small tape cassette B is attached to the tape cassette adapter, the adapter lid 7 is closed, the lever 19 is operated to operate the motor 20, and this operation moves the connector 61 downward in FIG. The tape cassette adapter A cannot be attached to the recording/reproducing machine unless the tape is pulled out from a small tape cassette to form a tape path that is substantially the same as that of a standard tape cassette.

When the tape cassette adapter is configured as described above, the operation lever 4 is operated to open the adapter lid 7, store the small tape cassette B, the adapter lid 7 is closed, and the lever 4 is opened. 19
When the motor 20 is activated by operating the tape guide mechanism, the tape pulling means of the tape guide mechanism is activated, and the guide poles 37 and 64 attached to the tape of the small tape cassette B are moved (from the solid line position in Fig. 1). By moving the tape to the position indicated by the two-dot chain line), a tape path that is almost the same as that of a standard type tape cassette is formed, and if it is inserted into a standard type recording/playback machine in this state, recording and playback can be performed. It becomes like this.

After recording and reproducing, take out this tape cassette adapter from the recording and reproducing machine and insert lever 19.
When the motor 20 is moved to the left in FIG. 1, the motor 20 rotates in the opposite direction to the above-mentioned rotation direction, and starts an operation opposite to the above-mentioned loading direction. That is,
Due to the operation of the motor 20, the loading lever 3
5 moves from the two-dot chain line position to the solid line position in FIG. 1, and the lever 63 also moves from the two-dot chain line position to the solid line position in FIG. 24, 25, 68, 66,
The take-up reel 200 of the small tape cassette B is driven in the tape winding direction via the tape cassettes 67, 69, 73, 74, and 75, and the loose tape is stored by the movement of the loading lever 35 and the lever 63. It is now possible to wind it up using some means.

77 is a cam configured at the base of the loading lever 35; 78 is a leaf spring configured to come into contact with the cam 77;
The fixed portion of this leaf spring 78 is screwed onto the lower half 1 of the tape cassette adapter A with a bolt.

That is, the loading lever 35 moves away from the contact position of the stopper 38 and reaches the position shown by the two-dot chain line in FIG. 13 (a position between the two-dot chain line position and the solid line position in FIG. (near the solid line position in FIG. 1), the leaf spring 78
The tip 78' of the leaf spring 78 comes into contact with the dead point of the cam 77 of the loading lever 35, and when the loading lever 35 is moved in the unloading direction, the tip 78' of the leaf spring 78 comes into contact with the dead point of the cam 77 of the loading lever 35.
8' comes into contact with the cam 77 at a position beyond the dead point, and always biases the loading lever 35 in the unloading direction. Therefore, there is a possibility that the driving force from the motor will stop at a position where the loading lever 35 exceeds the dead point of the cam 77 due to, for example, a shift in the stop timing when the switch is turned off, or due to mechanical loss such as gears. Even if the pin 80 is within the range in which the pin 80 can freely move within the elongated hole 79 of the plate 34, the force of the plate spring 78 will ensure that the loading lever 35 is at the position where it abuts the stopper 81 (first position).
It returns to the position indicated by the solid line in the figure). In addition, since the lever 63 is also linked to the movement of the loading lever 35, even if the lever 63 is in front of the stopper 82 and the driving force from the motor is not transmitted, the leaf spring 7
8, the lever 63 reliably reaches the position of the stopper 82, and the lever 63 also returns to the position shown by the solid line in FIG. As a result, loading lever 35
The guide pole 37 attached to the lever 63 and the guide pole 64 attached to the lever 63 are always regulated in a predetermined position, so that when the small tape cassette B is taken out from the tape cassette adapter A, the tape is pulled. The tape will not be damaged by sticking, and even when the small tape cassette B is attached to the tape cassette adapter, there will be no inconvenience that would make tape loading impossible. Furthermore, since such a biasing means is not always biased in a predetermined direction using a coil spring, it is not always biased in a predetermined direction regardless of the position of the loading lever 35. Therefore, tape loading is smoother, the loading load is less, and power can be saved, for example, when the loading lever is actuated by a motor.

In addition, instead of the above-mentioned leaf spring, the leaf spring itself is composed of a rigid plate, and the spring is arranged on this plate,
It may also be made to exhibit the action of a leaf spring.

However, if the tape cassette adapter has only the above configuration, when the tape cassette adapter with a small tape cassette attached is attached to the recording/reproducing machine, the tape cassettes comprising the tape storage means, such as gears 25 and 68, 68 and 66, etc. 67, 69, etc. are always in mesh with each other, which puts a corresponding load on the reel disk of the recording/reproducing machine.In the present invention, the main parts are constructed as shown in Figs. 14 and 15. By doing so, these drawbacks were eliminated.

That is, FIG. 14 is a schematic partial plan view of the main parts of the present invention, and FIG. 15 is a schematic partial side view.
0 is fitted into a hole 101 bored in the side wall of the tape cassette adapter A, and a plate 102 is fixed to the end of the pin 100, and a connector 1 is attached to one end of the plate 102.
03 are connected.

A flat bent portion 104 is formed on the end side of the connector 103.
One end of a coil spring 105 is attached to , which biases the connector 103 in the X direction in FIG. Furthermore, a long hole 106 is bored in the bent portion 104, and a shaft 107 is formed in this long hole 106.
The pin 109 of the support member 108, which is supported by the central axis of the gears 24 and 25, is loosely connected to the pin 109 on the side of the support member 108 and the connector 103.
10, there is a connector 103 and a support member 1
08, a coil spring 111 whose spring force is greater than that of the coil spring 105 is stretched. Note that the gears 68, 66, 67 are provided at predetermined positions on the support member 108.
is rotatably supported.

When the tape cassette adapter is constructed as described above, the gear 67, which is part of the tape storage means in the tape guide mechanism, is displaced in response to the closing and opening of the front cover 3 of the tape cassette adapter A. , the gear 67 is meshed with and disengaged from the gear 69. Now, the small tape cassette B is attached to the tape cassette adapter A, and the tape is pulled into a predetermined position by the tape pulling means of the tape guide mechanism. After forming the tape path, when this tape cassette adapter is attached to a recording/reproducing machine, the front cover 3 is opened/closed by the operation at the time of attachment, and the tape is magnetically loaded by the loading pole of the recording/reproducing machine. The connector 103 is attached to the head to perform recording and reproduction, but at this time, the connector 103 is pulled in the Y direction in FIG. When the gears 67 and 69 are rotated counterclockwise to the position shown in FIG. There is less unnecessary load on the source, and tape running becomes more stable.
The recording becomes smoother and the recording and playback becomes better.

In addition, especially if, as in the present invention, the transmission of driving force to the tape storage means is interlocked with the opening and closing of the front cover for protecting the tape, the front cover remains closed until it is installed in the recording/playback machine. is closed, so
Due to the spring force of the coil spring 105, the support member is in the solid line position in FIG.
In particular, since it is connected to the worm 21, a brake is applied to the take-up reel 200 of the small tape cassette B by the tape storage means, and a special brake means is provided. Even without it, the tape will not loosen.

Furthermore, when the support member 108 reaches the position of the stopper 112, the front cover 3 is configured to be in an open state that allows the tape of the small tape cassette B to be pulled out without any problem. Naturally, some variation must be taken into account depending on the assembly accuracy of the adapter. Therefore, in order to avoid any problem even if there is such a variation, for example, even if the front cover 3 is opened further than the opening position, the connector 103 is connected to the coil spring 111.
It is possible to move within the range of the elongated hole 106 against the spring force of.

As mentioned above, the tape cassette adapter according to the present invention includes a storage section for storing a tape cassette smaller than the standard type, and a tape cassette that is pulled out from the small tape cassette arranged in the storage section to accommodate the standard type tape cassette. A tape draw-out means that forms a tape path that is substantially the same as a tape path, a tape storage means that stores the tape drawn out by the tape pull-out means in the small tape cassette, and a tape draw-out means that is formed by the tape draw-out means. In the tape cassette adapter, the tape cassette adapter includes an opening/closing lid that covers the tape in the tape path, and the tape storage means transmits the driving force from the drive source to the take-up reel of the small tape cassette arranged in the storage section. The intermediate transmission means is further supported by a support member that moves according to the opening and closing of the opening/closing lid, and when the opening/closing lid is closed, the intermediate transmission means moves and the tape storage means is moved. The driving force transmission path of the tape storage means is connected, and when the opening/closing lid is opened, the intermediate transmission means moves and the driving force transmission path of the tape storage means is cut off. When recording/playing with a recording/playback adapter attached to a recording/playback device, unnecessary load is not applied to the tape drive source of the recording/playback device.
During playback, the opening/closing lid is opened by the recording/playback machine, so the driving force transmission path of the tape storage means is cut off, and the load during tape running can be reduced accordingly. Tape running becomes stable and smooth, recording/playback is good, and even if a small tape cassette is attached to the tape cassette adapter when it is not installed in the recording/playback device, it cannot be opened or closed in this state. Since the lid is normally closed, the drive force transmission path of the tape storage means is connected in the opposite way to the above, and therefore a load is applied to the tape, so tape slack is less likely to occur. have

[Brief explanation of the drawing]

FIG. 1 is a schematic illustration of the entire tape cassette adapter according to the present invention, FIGS. 2 to 13 are partial illustrations, and FIGS. 14 and 15 are partial illustrations of the main parts. A...Adapter for tape cassette, B...Small tape cassette, 3...Front lid (open/close lid), 35
. . . loading lever (part of the tape pulling means), 67, 69 . . . gears (part of the tape storage means), 103 .

Claims (1)

[Scope of utility model registration request] a storage section for storing a tape cassette smaller than a standard type; and a tape pull-out means for drawing out a tape from a small tape cassette disposed in the storage section to form a tape path substantially the same as a tape path of a standard type tape cassette. , a tape comprising: a tape storage means for storing the tape drawn out by the tape drawing means in the small tape cassette; and an opening/closing lid that covers the tape in the tape path formed by the tape drawing means. In the tape cassette adapter, the tape storage means has intermediate transmission means for transmitting the driving force from the drive source to the take-up reel of the small tape cassette disposed in the storage section, and the intermediate transmission means further includes the It is attached to a support member that moves in response to the opening and closing of the opening/closing lid, and when the opening/closing lid is closed, the intermediate transmission means moves and the driving force transmission path of the tape storage means is connected, so that the opening/closing lid is moved. An adapter for a tape cassette, characterized in that the intermediate transmission means is moved by the tape cassette so that the driving force transmission path of the tape storage means is cut off.