JPS58212671A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To prevent troubles at the discharge of a battery by unloading/loading a tape from/to a small-sized tape cassette taking in a case having the same size as a standard size tape cassette by using a motor and enabling a motor shaft to be rotated manually. CONSTITUTION:The small-sized tape cassette 1 is taken in the case body 6 having the same size as the standard size tape cassette. When a cover 7 is closed, a projection 7a pushes a switch 7a, power is electrically conducted to a motor 18 through a limit switch 27 and a driving rack 7a is moved in the left direction. Interlocking with the movement of the driving rack 17, arms 11, 15 are opened right and left and guide rolls 12, 14 unload a tape 3 from the cassette 1. After completing the drawing, a limit switch 27 is opened and the motor 18 stops. When the cover 7 is opened, a turning direction changeover switch 29 is turned to the other contact and the motor 18 is reversely turned until the limit switch 28 is opened to taking in the tape 3. An unshown penetration hole is drilled into a case 6 on the extension of the shaft of the motor 18 to taking in the tape 3 by turning the shaft 20 manually when the battery is discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tape cassette (hereinafter referred to as a second tape cassette) which is a conventional tape cassette (hereinafter referred to as a first tape cassette) with a smaller external shape by narrowing the distance between the reels. The present invention relates to a cassette adapter for use in a device in which a first tape cassette is used.

Tape cassettes used in video tape recorders and the like are considerably larger in external shape than consummate tape cassettes for audio, due to standards such as tape width and distance between reels, and even in portable equipment. Since tape cassettes are large, there is a limit to miniaturization, which is a major problem.0 Also, with current technology, it is difficult to make small tape cassettes with narrow tape widths due to image quality issues. state.

For this reason, as a means of downsizing tape cassettes and equipment, the tape width is the same as the conventional first tape cassette, and the distance between the reels is adjusted to the first. It has become possible to create a second tape cassette that is smaller in size than the tape cassette and has a volume of tape that is approximately z~% of the full size of the first tape cassette. Ta.

Such a small second tape cassette not only provides the same image quality as the current first tape cassette, but also allows the tape cassette itself to be made smaller.
Although it is possible to downsize equipment using tape cassettes, the amount of tape is naturally reduced, so the recording time is shorter than that of the current first tape cassette. When considering recording time and miniaturization, it is desirable to change the tape cassette used depending on the purpose, etc., and it is desirable to use a small second tape cassette that is compatible with the first tape cassette. In other words, it is required that the first tape cassette can also be used in equipment that uses the tape cassette, and a cassette adapter that satisfies this requirement becomes necessary.

In such a cassette adapter, the present invention provides a second
It is an object of the present invention to enable the extraction and storage of magnetic tapes from a tape cassette using a motor and manual operation.

Hereinafter, an embodiment of the cassette adapter of the present invention will be explained using the drawings of FIGS. 1 to 4.

A cassette adapter according to an embodiment of the present invention is shown in FIGS. 1 to 3, and in the figures, 1 is a second tape cassette, and this second tape cassette has one cassette...
By rotatably supporting and storing the winding magnetic tape 3 in the case 2, the magnetic tape 3 is rotatably supported, and a predetermined running path is formed on the front side so that the magnetic tape 3 is exposed to the outside. It is configured. In this second tape force set 1, one reel 4 can be operated from the bottom side of the half case 2 through a window (not shown) provided at the bottom of the half case 2, and The tip of the reel stand fits into the internal hollow part and is locked, and the other reel 6 is attached to a reel shaft (not shown) implanted in the half case 2.
By Ij-! It is supported so as to be rotatable, and has a gear portion 5a formed on its outer peripheral portion, and is rotated by a gear on the drive source side that meshes with the gear portion 6a through a window on the side surface of the half case 2.

6 is the main body case of the adapter, and this main case 6
has the same external dimensions as the first tape cassette, and the second tape cassette 1 is loaded into the main body case 60 and the cassette storage section 6a.

The cassette storage section 6a of the main body case 6 is provided with an opening/closing lid 7 whose one end is rotatably supported at the open end of the cassette storage section 6a. Further, a locking mechanism for the opening/closing lid 7 is provided at an end of the cassette storage section 6a opposite to the end to which the opening/closing lid 7 is attached. 8 is an operating lever for the locking mechanism. Further, in this main body case 6, a reel gear 9 which can be rotatably mounted on the tip of one of the reel stands is disposed at a position corresponding to the reel stand of the video tape recorder, and a reel gear 9 is rotatably supported. 4 is provided with a window (not shown) that allows the user to attach the holder. An idler gear 10 meshes with the reel gear 9, a gear portion 5a of the reel 5 of the second tape cassette 1 meshes with the idler gear 1o, and the rotation of the reel gear 9 causes the reel 6 of the second tape cassette 1 to rotate. Then, the magnetic tape 3 is made to run.

This main body case 6 is provided with a sword-shaped pick-up side pull-out arm 11 so as to rotate about a shaft 11a, and at one end of the tick-up side pull-out arm 11, a second pull-out arm 11 is provided. Several guide rollers 12 are provided for hooking the magnetic tape 3 of the tape cassette 1 and pulling it out to a predetermined position.

The supply side drawer arm 13 is attached to the shaft 13 at a position opposite to the take-up side drawer arm 11 of the main body case 6.
The magnetic case 3 of the second tape cassette 1 is hooked onto one end of the supply side drawer arm 13, similarly to the pickup side drawer arm 11. A guide roller 14 is attached to pull it out to a predetermined position. A knob 13b is provided at the other end of the supply-side pull-out arm 13, and the knob 13b is inserted into the square hole 1sb of the dog-shaped connecting arm 16, which is arranged to rotate about the shaft 16a. It's stuck in. Further, a knob 15 is provided at the other end of this connecting arm 16.
a is provided, and its knob 15c is fitted into a square hole 16b of a connecting arm 16 arranged to rotate about a shaft 16a.

The other end of this connecting arm 14 is engaged with a knob 11b provided at the other end of the pick-up side pull-out arm 11.

Reference numeral 17 denotes a drive rack with which a pinion gear 19 rotated by the motor 18 meshes, and a knob 11b of the pickup arm 11 is provided on the lower surface of the drive rack 17.
A cam groove 17a into which the cam is fitted is provided.

A worm gear 2° is fixed to the rotating shaft of the motor 18, and the rotation of the motor 18 is controlled by gears 21 to 24.
The cam groove 17a of the pinion gear 17 is
Therefore, when the drive rack 17 moves to the left in FIG. When the magnetic tape 3 is pulled out and the drive rack 17 moves to the right in FIG. The magnetic tape 3 that has been pulled out to the tape guide position of the first tape cassette is placed into the second tape cassette 1.

+N-+□- Yes, the tip of the worm gear 20 is provided with a groove 20a into which the tip of the screwdriver fits, and on the rear surface of the main body case 6, there is a groove 20a on the extension line of the rotation axis of the motor 18. The part has a through hole 6b into which a driver can be inserted.
is provided, and by inserting a screwdriver through the through hole 6b and fitting it into the groove 20a of the worm gear 20, the worm gear 2 is fixed to the rotating shaft of the motor 18.
0 can be rotated manually. Note that the shape of the groove 20a provided at the tip of the worm gear 20 may be in the shape of a ten as shown in FIG. 4 in addition to the one shape shown in FIG.

25 is a switch device for controlling operation/stop and rotation direction of the motor 18;
5 is the drive rack 1 of the main body case 6, as shown in FIG.
A limit switch 27 consisting of a normally closed contact for regulating the amount of leftward movement of the drive rack 17 is provided on one surface of the switch board 26 which is disposed upright above the drive rack 17.
On the opposite side, an IJ switch 28 consisting of a normally closed contact for regulating the amount of rightward movement of the drive rack 17 and a rotation direction switching switch 29 for switching the direction of the current flowing to the motor 18 are provided. The operating portion 29a of the rotation direction changeover switch 29 is operable into the force center storage portion 6a by a protruding piece 7a at the end of the opening/closing lid 7. Further, in the limit l-2 f27.28, the contact point opens when the operation parts 27a and 28a are pushed by the cam bodies 3oa and 3ob provided on the upper surface of the drive rank 17, and thereby the contact point to the motor 18 is opened. Power is cut off. That is, the limit switch 27 stops the motor 18 when the tape drawing operation is completed, and the limit switch 28 stops the motor 18 even when the tape storage operation is completed.

Note that 31 is a guard panel attached to the front opening of the main body case 6 so as to be openable and closable.

In such a configuration, by storing the second tape cassette 1 in the cassette storage part 6a of the main body case 6 of the adapter and closing the opening/closing lid 7, the protruding piece 7a of the opening/closing lid 7 is removed.
presses the operation part 29a of the same rotation direction changeover switch 29 of the switch device 26, and the motor 18. limit switch 271
Rotation direction selector switch 29. A closed circuit of a DC power supply using dry batteries is configured, and the motor 18 rotates, and the drive rack 17
moves to the left and the tape pull-out operation is performed - At this time, when the drive rack 17 moves to the position where the tape pull-out operation is completed, the limit switch 27 is activated by the cam body 30a.
When this happens, the contacts open, the power to the motor 18 is cut off, and the motor 18 stops.

On the other hand, by opening the opening/closing lid 7, the contacts of the rotation direction changeover switch 29 are switched, and the motor 18.
Limit switch 289 rotation direction changeover switch 29. A closed circuit of the DC power source is constructed, the motor 18 rotates in the opposite direction, and the drive rack 17 moves rightward to carry out tape storage operation. At this time, when the drive rack 17 moves to the position where the tape storage operation is completed, the limit switch 28 hits the cam body 30b and the contact opens, and the power to the motor 18 is cut off and the motor 18 is stopped.

In this way, the tape drawing operation and the tape storage operation can be performed in conjunction with the loading and unloading operations of the second tape cassette 1 into the cassette storage section 6a of the main body case 6.

By the way, when the dry cell battery used as a DC power source discharges,
If the motor 18 cannot be driven,
The motor 18 would stop during the tape pull-out operation or the deg storage operation, but in the present invention, the rotation 4Q11 of the motor 18 can be manually rotated from the outside, so it is easy to install and install new batteries. There's no way you can't use it until you replace it.

As described above, according to the cassette adapter of the present invention, the tape drawing operation and tape storage operation can be performed not only electrically by the motor but also manually. Even if it stops during the tape ejection operation or tape storage operation,
It is possible to continue the operation manually.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external appearance of a cassette adapter according to an embodiment of the present invention, FIGS. 2 and 3 are a perspective view and a plan view showing the internal structure of a rotating cassette and a y' door adapter, respectively, and FIG. 4 1 is a perspective view showing other embodiments of main parts of the same cassette adapter, ○1... second tape cassette, 2...
Half case, 3... Magnetic tape, 4, 6...
...Reel, 6...Body case, 6a...
...Cassette storage section, 6b...Through hole, 7.
...Opening/closing lid, 9...Reel gear, 10.
...Idler gear, 11...Tick-up side pull-out arm, 12,14...Guide roller,
13... Supply side drawer arm, 15.16...
...Connection arm, 17... Drive rack, 1
8...Motor, 19...Pinion gear, 20...Worm gear, 20a...
Groove, 21.22,23,24...Gear. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] a main body case having a cassette storage section for storing a second tape cassette having a shorter reel-to-reel distance than the first tape cassette and having the same dimensions as the first tape cassette; a tape drawer/accommodating means for performing a pull-out operation for pulling out the magnetic tape from the second tape cassette at tape guide position 1 of the first tape cassette and a housing operation for accommodating the magnetic tape in the second tape cassette; and the tape drawer-accommodating means. a reel drive means disposed within the main body case and configured to drive a reel of a second tape cassette housed in the main body case; A cassette adapter having a through hole in a portion on an extension of the rotating shaft of the motor, and configured to allow the rotating shaft of the motor to rotate through the through hole.