KR910003798B1 - Magnetic recording and playback device power supply - Google Patents

Abstract

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Description

Magnetic recording and playback device

1 is a schematic plan view of the mechanism of the prior art VTR for large cassettes.

2 is a schematic diagram of a cassette adapter used for the prior art VTR of FIG.

3 is a partial schematic cross-sectional view of the magnetic recording and reproducing apparatus of the present invention.

4 is a perspective view partially cut out of the VTR according to the first embodiment of the present invention.

5 is a side view of the cassette control device of the VTR of FIG.

6 is a side view of the cassette control device of FIG. 5 upon insertion of a small cassette.

7 is a side view of a small cassette insertion portion of the cassette control device of FIG.

8 is a plan view of the insert of FIG.

9 is a perspective view of an insert for a large cassette in the cassette control of FIG.

FIG. 10 is a view like the fifth diagram specifically showing the second embodiment of the present invention. FIG.

* Explanation of symbols for main parts of the drawings

2: cassette adapter 7: guide plate

8: drive gear 6: slider

11: loading arm 14: adapter chassis

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a reproducing apparatus using magnetic tape cassettes and to magnetic recording. In general, recording and reproducing can be performed in a plurality of types of magnetic tape cassettes of different sizes through selective loading of the magnetic tape cassettes. Magnetic recording and playback apparatus.

Generally, a plurality of kinds of magnetic tape cassettes of different sizes are used for magnetic recording and playback apparatuses, for example, video tape recorders (hereinafter referred to as "VTR _s ").

Thus, when the recording and playback are implemented in magnetic tape cassettes of different sizes are desired to be used by a VTR _s conforming to the respective magnetic tape cassettes of different sizes.

On the other hand, a cassette adapter is used if recording and playback on a small magnetic tape cassette are performed using the VTR of a large magnetic tape cassette.

1 shows a known VTR mechanism 25 for a large magnetic tape cassette 3.

In Fig. 1, reference numeral 1 denotes a small magnetic tape cassette 1.

When recording and playback in the large cassette 3 is carried out in the mechanism 25, the large cassette 3 is loaded at a predetermined place and the magnetic tape 3a is inserted into the drum 26, the guide roller 29, and the eraser. It is taken out of the large cassette 3 by the first pole base 27 and the second pole base 28 so as to make contact with the head 33, the audio head 32, and the like.

The magnetic tape 3a is pressed against the capstan shaft 30 by the pinch roller 31 and the magnetic tape 3a is supplied through the rotation of the capstan shaft 30.

The rail motor (not shown) thus drives the magnetic tape 3a to rotate such rails 3b and 3c such that the magnetic tape 3a is wound around the rails 3b and 3c.

On the other hand, when the small cassette 1 is loaded into the mechanism 25 to perform recording and playback on the small tape cassette 1, the cassette 1 itself becomes a small form so that the magnetic tape 1a is first fouled base. It is impossible to draw out of the small cassette 1 using the 27 and the second pole base 28.

Therefore, recording and playback on the small cassette 1 cannot be carried out.

Furthermore, when the magnetic tape 1a is loaded on the mechanism 25 of the small cassette 1 to supply the magnetic tape 1a by the capstan shaft 30, the large cassette 3, i.e., the position 1a ' It is desired to be substantially drawn out to the position of the magnetic tape 3a.

In order to wind the magnetic tape 1a around the winding rail 1c thereon, it is necessary to install a mechanical device in order to transmit the driving force of the rail motor of the mechanical device 25 to the winding rail 1c.

Thus, conventionally the cassette adapter 2 is used as shown in FIG. 2 when recording and reproduction in the small cassette 1 are shifted by the VTR for the large cassette 3. In Fig. 2, when the recording and playback in the small cassette 1 are carried out by the VTR for the large cassette 3, the small cassette 1 is inserted into the cassette adapter 2 in the direction of the arrow a so that it is supplied. The arm 2a and the winding arm 2b are driven by an adapter motor (not shown) and are thus used as the supply arm 2a and the winding arm 2b and the magnetic tape 1a is the place 1a '. Is taken out.

The small cassette 1 has such a supply rail 1b and a winding rail 1c such that the magnetic tape 1a is wound around the supply rail 1b and the winding rail 1c. The winding rail 1c is configured as a gear meshing with the drive gear 2c of the cassette adapter 2 at its hub portion, and the drive gear 2c in turn acts with the drive rail 2d.

At this time, by inserting the cassette adapter 2 into the cassette control unit for the large cassette 3 in the direction of the arrow b, the small cassette 1 is loaded into the VTR and then the recording on the small cassette 1 is carried out. Regeneration can be performed.

The drive rail 2d and the supply rail 1b are rotated by the rail motor in order to rewind the magnetic tape 1a and rewind it. The small cassette 1 can be removed from the VTR by reversing the preceding step.

Therefore, it is conventionally necessary to use a cassette adapter when recording and reproducing on a small cassette are carried out by the VTR for a large cassette.

Therefore, the small cassette is first inserted into the cassette adapter and the magnetic tape is taken out of the small cassette so that the cassette adapter must be inserted into the VTR for the large cassette. In addition, in the known VTR, the inconvenience of having to reverse the loading step in order to use a small cassette has been large.

It is therefore an essential object of the present invention to provide a magnetic recording and reproducing apparatus in which recording and reproducing to many kinds of magnetic tape cassettes of different sizes can be performed through the selective loading of the magnetic tape cassettes without the need for the use of a cassette adapter.

In order to achieve the object of the present invention, the magnetic recording and reproducing apparatus of the present invention capable of selectively loading a plurality of types of magnetic tape cassettes of different sizes allows the large magnetic tape cassette to be replaced horizontally. A slider receiving a horizontally large magnetic tape cassette at the insertion portion of the tape cassette; Lowering the large magnetic tape cassette vertically; Adapter chassis with small magnetic tape cassette secured to fill it; Retrieval of fixing of the small magnetic tape cassette to the adapter chassis; The magnetic tape is taken out by the arms which take out the first and second tapes installed in the adapter chassis from the small magnetic tape cassette.

Loaded on the slider loaded in the retrieval state where the magnetic tape was removed from the small magnetic tape cassette and the slider was removed from the place for performing recording and playback and the adapter chassis was loaded at the location where the recording and playback were performed. It is.

3 schematically shows a magnetic recording and reproducing apparatus of the present invention. In FIG. 3, when the large magnetic tape cassette 3 is inserted into the magnetic recording and reproducing apparatus in the direction of the arrow A in the cabinet 34 supplied in front of the magnetic recording and reproducing apparatus, the large cassette 3 becomes an arrow ( As indicated by B) it is loaded at the intended loading position.

In order to effect the loading of the small magnetic tape cassette 1, the small cassette 1 is fed in the direction of the arrow C and weakened in the direction of the arrow D to be installed in the adapter chassis 14. The magnetic tape 1a is taken out of the small cassette 1 in the direction of the arrow E by driving the adapter motor, and then the adapter chassis 14 is such an arrow where the small cassette 1 is loaded at a predetermined ground position. Lower in the (F) direction.

The small cassette 1 is taken out of the cabinet 34 by reversing the preceding step. When the small cassette 1 is loaded at a predetermined loading position, the magnetic tape coming from the small cassette 1 is the height of the magnetic tape 3a of the large cassette 3 which is related to the magnetic recording and the surface of the mechanism of the playback apparatus. It should be located at the same height as (G).

Hereinafter, the cassette controller K1 used in the VTR according to the first embodiment of the present invention is referred to in FIGS. 4 to 9.

5 and 6 show the left side of the cassette controller K1 with respect to the insertion direction of the magnetic tape cassette.

The right part of the cassette control device K1 is the same as the left part of the fifth and sixth degrees in the mechanism.

5 and 6, the guide plate 7 is formed of two L-shaped grooves 7a and 7b and two straight grooves 7c and 7d.

The guide plate 7 is attached to the main chassis of the VTR by two machine screws 13.

The drive gear 8 and the drive arm 9 fixed to each other are rotatably mounted coaxially to the guide plate.

The stacking gear 10 and the stacking arm 11 which are securely installed to each other are rotatably installed on the guide plate 7 in a coaxial manner.

The first guide rod 6a and the second guide rod 6b are positioned in the slider 6 so as to be put in the L-shaped grooves 7a and 7b, respectively, and on the second guide rod 6b is the U of the drive arm 9. It is put in the shape groove 9a.

As well indicated in FIGS. 7 and 8, four guide rods 14a and loading rods 14b are located on each of the opposite sides of the adapter chassis 14.

As shown in FIG. 5, two of the four guide rods 14a are put in the linear groove 7c and the other two of the four guide rods 14a are put in the linear groove 7d. The loading rod 14b is rotatably mounted to the loading arm 11.

Although not correctly indicated, the drive gears 8 arranged on the left and right sides of the cassette controller K1 provide a gear for adjusting the rotational phase of the drive gear 8 so that it can be rotated in the same rotational phase.

Similarly, the stacking gears 10 arranged on the left and right sides of the cassette controller K are provided with gears for adjusting the rotational phase of the stacking gear 10 so that they can rotate in the same rotational phase. The cassette cover 15 for the small cassette 1 is rotatably mounted on the guide plate 7 so that it can rotate on the support rod 7e and is strongly pressed by the tension spring to close.

7 and 8 show the adapter chassis 14 acting as an insert for the small cassette 1.

The first housing arm 17 is rotatably mounted to the adapter chassis 14 so that it can rotate on the rod 17a. One end of the second housing arm 18 is provided to slide in the extension opening 14c of the adapter chassis 14. The first housing arm 17 and the second housing arm 18 are rotatably connected to each other at their center and are rotatably attached to the housing 19. The tension spring 20 forces the housing 19 to engage with the first housing arm 17 and the second housing arm 18 and raise the housing 19.

In FIG. 5, when the large cassette 1 is loaded in the VTR, the large cassette 3 is put into the slider 6 (FIG. 9) in the direction of the arrow A by hand, so that the large cassette 3 is Slider 6 when the loading start switch (not shown) detects that the drive gear 8 and the drive arm 9 rotate such a drive motor by the drive motor in the direction of the arrow P. It extends downward toward the bottom plate of the slider 6 by the pair of springs 4 which were affixed to the slider 6 so that safety might occur.

In response to the rotation of the drive gear 8 and the drive arm 9, the second guide rod 6b, which is clamped by the drive arm 9, is driven. Therefore, the slider 6 is first horizontally displaced and recorded for the first time through the guides of the first and second guide rods 6a and 6b by the L-shaped grooves 7a and 7b of the guide plate 7, respectively. The position is lowered vertically to the position 6P for carrying out the overplay and reproduction, thereby completing the loading of the large cassette in the VTR.

On the other hand, when the large cassette 3 is removed from the VTR, the above-mentioned steps are reversed through the reverse rotation of the drive motor, so that the large cassette 3 is pulled out of the VTR.

When the small cassette 1 is loaded in the VTR in FIGS. 5 and 6, the small cassette 1 is first inserted into the housing 19 arranged in the position of FIG. 5 by hand. The small cassette 1 is therefore the bottom of the housing 19 by means of a pair of springs 21 connected to the housing 19 in the same way as the spring 4 of the slider 6 to make the housing 19 stable. It will be pressed into the bottom facing the plate.

The housing 19 is then positioned in the position of FIG. 6 when the housing 19 is pressed downwards and secured to the adapter chassis 14 by a closing mechanism (not shown) of the adapter chassis 14. At this time, a cassette detection switch (not shown) for detection insertion of the small cassette 1 and a closed detection switch (not shown) for detection closing of the housing 19 have a small cassette 1 inserted therein. It detects that the housing 19 is locked to the adapter chassis 14.

Thus, the first and second tape retracting arms 22 and 23 for retracting the magnetic tape 1a in the small cassette 1 each have rollers attached to their ends to rotate the adapter chassis. The rotatably mounted at 14 is driven by a housing motor (not shown) to pull in the magnetic tape in the small cassette 1 at the predetermined position 1a 'as indicated in FIG.

At the same time, the drive motor is driven in the same manner as in the case of loading the large cassette 3 in the VTR to remove the slider 6 at the position 6P for transferring recording and playback.

If the magnetic tape 1a is detected at a predetermined position 1a 'and the slider 6 is replaced at the position 6P for recording and playback, the loading motor (not shown) is set to sixth. It is driven to drive the loading gear 10 and the loading arm 11 in the direction of the arrow Q of FIG. Therefore, the adapter chassis 14 in the horizontal state is formed by the two straight grooves 7c and 7d of the guide plate 7 so as to be positioned at the slider 6 disposed at the position 6P for performing recording and playback. It totally descends to the position 14Q through the guide of the guide rod 14a.

The adapter chassis is composed of a pair of openings 14d for blocking the first guide rod 6a without the slider 6 being provided with a top plate as shown in FIG. 9, as shown in FIGS. 7 and 8 Likewise in contact with the adapter chassis the spring 4 of the slider 6 and the second guide rod 6b the adapter chassis 14 are closely positioned to the slider 6 without any removal therebetween.

As shown in FIG. 8, the small cassette 1 has such a supply rail 1b and a winding rail 1c such that the magnetic tape 1a is wound around the supply rail 1b and the winding rail 1c. Have.

The winding rail 1c was configured as a gear meshing with a drive gear 2c installed so as to be rotatable in the adapter chassis 14 at its hub portion, and the drive gear 2c is in turn interlocked with the drive rail 2d. . In order to perform winding and rewinding of the magnetic tape 1a, the drive rail 2d and the supply rail 1b are rotated by a rail motor (not shown).

To remove the small cassette from the VTR, the loading motor rotates to raise the adapter chassis 14 in the reverse order of loading. Upon detecting the lift completion of the adapter chassis 14, the drive motor rotates in reverse to replace the slider at its original position in the same manner as the removal of the large cassette 3 from the VTR.

When the adapter chassis 14 is raised, the first and second tapes that retract the arms 22, 23 are driven in the opposite direction to those mentioned above to raise the magnetic tape to its original position. The closing of the housing 19 by the closing mechanism of the adapter chassis 14 is restored by the solenoid. The housing 19 is thus raised by the operation of the tension spring 20 so that the cassette cover 15 for the small cassette 1 can be opened and the small cassette 1 can be taken out of the VTR.

On the other hand, although the housing 19 is pushed downward to close the adapter chassis 14 when the small cassette 1 is not inserted into the housing 19, the cassette detection switch for insert detection of the small cassette 1 is moved. I do not lose. Therefore, the first and second tapes leading to the arms 22 and 23 are not driven and the adapter chassis 14 is not lowered.

Thus, when the small cassette 1 is not used, the housing 19 can be pressed downward to be closed to the adapter chassis 14 and then the cassette cover 15 can be closed. At this time, since the adapter chassis 14 is not lowered, the large cassette 3 can be inserted into the cassette controller K1.

10 shows the cassette controller K2 used in the VTR according to the second embodiment of the present invention.

In the cassette controller K2, a small cassette 1 is fixed directly to the adapter chassis 14 by hand without using the housing 19.

The cassette cover 15 is openly attached to the adapter chassis 14 to be closed in its closed state. The spring 21 is attached to the cassette cover 15.

In order to fix the small cassette 1 to the adapter chassis 14, the small cassette is directly fixed to the adapter chassis 14 by hand by opening the cassette cover 15 and the cassette cover 15 is closed. The small cassette 1 is pushed downward toward the bottom plate of the adapter chassis 14 by a spring 21 to secure the adapter chassis 14. Subsequent operations are the same as those of the cassette controller K1.

As is apparent from the foregoing, in the VTR of the present invention, when recording and playback are performed on the large cassette 3, the large cassette 3 is lowered vertically by the slider 6 and replaced with a large cassette (( It is received horizontally at the insertion position of 3) On the other hand, when recording and playback are carried out on the small cassette 1, the magnetic tape 1a draws arms 22 and 23 mounted on the adapter chassis 14. Is inserted after the detection of the fixing of the small cassette 1 to the adapter chassis 14 in the small cassette 1 by the first and second tapes, so that the magnetic tape 1a is drawn in the small cassette 1 and the slider ( When 6) is replaced at position 6P to redirect recording and playback, adapter chassis 14 is loaded into slider 6 mounted at position 6P to perform recording and playback.

Thus, many other types of cassettes can be selectively used in a single VTR without the use of a cassette adapter by the present invention. Thus, for example, in a large cassette VTR, recording and playback on a small cassette can be easily implemented without the need for a cassette adapter.

Although the present invention has been fully described by way of example with respect to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art, and therefore if any other such changes and modifications are to be made to those skilled in the art. Unless bounded by their scope, they should be construed as being included here.

Claims (2)

In the selective loading of a plurality of magnetic tape cassettes (1) (3) of different specifications: horizontally at the insertion position of the large magnetic tape cassette so as to replace the large magnetic tape cassette (3) horizontally The slider 6 receiving the large magnetic tape cassette 3 and the large magnetic tape cassette 3 are lowered vertically; And an adapter chassis 14 in which a small magnetic tape cassette 1 is closed there; When the small magnetic tape cassette 1 detects installation in the adapter chassis 14, the magnetic tape 1a is moved by the first and second tape inlet arms 22, 23 installed in the adapter chassis 14. Drawn in the small magnetic tape cassette 1; The magnetic tape 1a is drawn in the small magnetic tape cassette 1 and the slider 6 is replaced at the position 6P for the performance of recording and playback, and the adapter chassis 14 is used for recording and playback. Magnetic recording and reproducing apparatus, comprising being loaded on the slider (6) installed at a position (6P) to fulfill the above. 2. A magnetic recording and reproducing apparatus as set forth in claim 1, comprising a housing (19) for inserting said small magnetic tape cassette (1) therein so as to be retractable into said adapter chassis (14).

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