JP3063391B2 - Recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel recording / reproducing apparatus . More specifically, in a recording / reproducing apparatus using two or more types of tape cassettes having different sizes and different positions where a reel unlocking member for unlocking the tape reel is inserted, a simple mechanism is used for a large tape cassette. In use, the reel lock release member for the small tape cassette does not hinder the mounting of the large tape cassette, so that the shape of the large tape cassette does not become unnecessarily large.

[0002]

2. Description of the Related Art Conventionally, in a so-called compatible type recording / reproducing apparatus using tape cassettes having different sizes, a lock of a tape reel of a large or small tape cassette is released at the same position.

[0003]

However, the unlock position of the tape reel with respect to the small tape cassette corresponds to the position between the two tape reels of the large tape cassette. A member that moves to the unlock position in accordance with the insertion of the reel unlock member must be
For this reason, the interval between the two tape reels must be increased, and there is a problem that the size of the large tape cassette increases.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a recording / reproducing apparatus.
The device must be at least as large as
Reels for two types of tape cassettes of different sizes
Move the reel bases to move the bases closer or farther apart.
Means to move it, and put it in two types of tape cassettes, large and small.
A pair of tapes inserted each and wound around a magnetic tape
Reel lock for large tape cassettes
Release member and reel lock release member for small tape cassette
Recording and reproducing apparatus having a small tape cassette.
When inserted into a recording / playback device,
The reel unlocking member is inserted into the small tape cassette.
To unlock the tape reel,
When inserted into the recording / reproducing device, the small tape cassette
The reel unlocking member is pressed on the bottom of the large tape cassette.
As well as reel locks for large tape cassettes.
The release member is inserted into the large tape cassette and the tape
The lock is configured to be unlocked .

[0005]

Therefore, in the recording / reproducing apparatus of the present invention, when the large tape cassette is mounted, the reel unlocking member for the small tape cassette is pushed by the large tape cassette and moves to obstruct the mounting of the large tape cassette. Because it does not become
The large tape cassette does not need to have a portion where the reel unlocking member for the small tape cassette escapes, and the member that moves to the unlocking position in response to the insertion of the reel unlocking member does not interfere with the tape reel. The large tape cassette need not be made larger than necessary.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the recording / reproducing apparatus of the present invention will be described below with reference to the embodiments shown in the accompanying drawings.

First, the tape cassette will be described.

Reference numeral 1 denotes a small tape cassette, 2 denotes a cassette case thereof, and the cassette case 2 has a flat box shape having a horizontally long rectangular shape when viewed from above, and tape cassettes are provided at both left and right ends on the front surface thereof. Outlets 3 and 3 are formed, and a portion between the tape outlets 3 and 3 in the front surface of the cassette case 2 is a mouth portion 4 opened forward and downward. The mouse portion 4 is a portion into which a tape pull-out member, that is, a tape loading member is inserted when the tape cassette 1 is mounted on the recording / reproducing apparatus.

Reference numerals 5 and 5 denote tape reels rotatably housed side by side in the cassette case 2. The tape reels 5 and 5 are cylindrical reel hubs 6 and 6 and are laterally located from upper and lower ends of the reel hub. Are formed on the periphery of the lower flanges 8, 8, and locking engagement teeth 9, 9,... Are formed.

Numeral 10 denotes a magnetic tape, both ends of which are fixed to the reel hubs 6, and are wound by a predetermined amount.

A part of the magnetic tape 10 is led out of the tape outlets 3 and 3 to the outside of the cassette case 2, and is hung along the front surface of the mouse unit 4 when not in use. In addition, 1
Reference numerals 1 and 11 denote guides in the cassette formed at the end of the tape outlets 3 and 3 on the mouth 4 side, and the magnetic tape 10 is wound around when not in use.

A front lid 12 is rotatably supported on the front surface of the cassette case 2. The front lid 12 covers and protects the front surface of the magnetic tape 10 located along the front surface of the mouse unit 4 when not in use. In use, the magnetic tape 10 rotates upward to open the front side of the magnetic tape 10.

Reel hub engaging holes 6a, 6a formed in the reel hubs 6, 6 of the tape reels 5, 5 so as to open at the lower end surface thereof are formed on the bottom wall 2a of the cassette case 2.
Through the reel base insertion holes 13 and 13 formed at the outside.

Reference numeral 14 denotes a sliding body which is slidably disposed in the center of the rear end of the cassette case 2 in the front-rear direction, and has a rectangular block shape slightly longer in the front-rear direction. Is formed with an engagement notch 15 facing rearward, and a circular spring arrangement hole 16 opened in the rear end face.

The sliding body 14 has a concave portion 17 which is open at the lower end surface thereof, and the lower end portion of the rear surface of the concave portion 17 is an inclined surface 17a which is inclined backward and downward.

Numeral 18 denotes a coil spring, the front end of which is inserted into the spring arrangement hole 16 of the sliding member 14 and the rear end thereof is elastically contacted with the inner surface of the rear wall 2b of the cassette case 2, whereby the sliding member 14 Has a forward moving force applied to it. Note that a stopper (not shown) is formed in the cassette case 2 to limit the front end of the moving range of the sliding body 14.

Reference numeral 19 denotes an insertion hole formed in the bottom wall 2a of the cassette case 2, and the sliding member 1 is inserted through the insertion hole 19.
4, particularly a portion including the inclined surface 17 a faces outside the cassette case 2.

Reference numerals 20 and 20 denote locking members for locking the tape reels 5 and 5, respectively. Since the lock members 20 and 20 have a symmetrical shape, the right lock member 20
The lock member 20 on the left side will be described in detail, and the same portions as those on the same portion of the lock member 20 on the right side will be denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 21 denotes a cylindrical base.
An arm 22 having a substantially U-shape is projected from the outer peripheral surface of the arm 22 substantially leftward, and a claw 23 is projected substantially forward from a substantially middle portion of the arm 22. A spring hook 24 is provided on the upper surface of the claw 23 near the arm 22. The lock member 20 has a base portion supported by a support pin 2 erected on the bottom wall 2 a of the cassette case 2.
5 is rotatably fitted to the outside.

Reference numeral 26 denotes a torsion spring, the coil portion 26a of which is externally supported by the support pin 25, one arm 26b is in elastic contact with the inner surface of the rear wall 2b of the cassette case 2, and the other arm 26c is Spring hook part 2 of lock member 20
4, the locking member 20 is biased clockwise when viewed from above, so that the left end 22 a of the arm 22 of the locking member is moved to the right side of the sliding body 14. Elastically contact the engagement notch 15.

When the sliding body 14 is located at the front end of the moving range, the tips of the claw pieces 23 of the lock members 20, 20 are engaged with the engaging teeth 9, 9 of the tape reels 5, 5.
To lock the tape reels 5, 5 in that position.

When the sliding body 14 moves rearward,
The distal ends of the arm pieces 22, 22 of the lock members 20, 20 are pressed rearward by the engagement notches 15 of the sliding body 14, whereby the right lock member 20 moves counterclockwise when viewed from above, and The lock member 20 is rotated in the clockwise direction, and the tips of the claw pieces 23 are separated from the engagement teeth 9 of the tape reels 5, 5, whereby
The lock on the tape reels 5, 5 is released.

Reference numeral 27 denotes a large tape cassette. Reference numeral 28 denotes a cassette case of the large tape cassette. The cassette case 28 is in the shape of a flat box having a horizontally-long rectangular shape when viewed from above. The width and width of the cassette case 28 are significantly larger than those of the cassette case 2 of the small tape cassette 1.

Tape outlets 29, 29 are formed in the front part of the cassette case 28 near the left and right ends thereof.
A portion between the first and second portions is a mouse portion 30 opened forward and downward. The mouse unit 30 is a tape cassette 2
Reference numeral 7 denotes a member into which a tape pull-out member, that is, a tape loading member is inserted when the tape is mounted on the recording / reproducing apparatus.

Numerals 31 and 31 denote tape reels which are rotatably housed side by side in the cassette case 28. The tape reels 31 and 31 are cylindrical reel hubs 32 and 3 respectively.
2 and flanges 33, 33 and 34, 34 protruding laterally from both the upper and lower ends of the reel hub. Locking teeth 35, 35,
Are formed.

Numeral 36 denotes a magnetic tape, both ends of which are fixed to the reel hubs 32 and 32 and are wound by a predetermined amount.

A part of the magnetic tape 36 is connected to the tape outlet 2.
It is led out of the cassette case 28 from 9, 29 and is hung along the front surface of the mouse part 30 when not in use.
37, 37 are the mouse outlets 30 of the tape outlets 29, 29.
This is an in-cassette guide formed at the end on the side, around which the magnetic tape 36 is wound when not in use.

Further, at the front end of the cassette case 28, near the left and right ends, there are formed recesses 38, 38 which are open to the front and up and down and have a narrow left and right width and extend back and forth.

Numeral 39 denotes a front lid rotatably supported on the front surface of the cassette case 28, and a magnetic tape 36 positioned along the front surface of the mouse unit 30 when not in use.
The front surface of the magnetic tape 36 is turned up to open the front surface of the magnetic tape 36 during use. The side surfaces 39a, 39a of the front lid 39 are rotatably supported by the cassette case 28 in the recesses 38, 38 of the cassette case 28.

The reel hubs 32, 32 of the tape reels 31, 31 are provided with reel base engaging holes 32a, 32a formed to open at the lower end surfaces thereof.
8, reel base insertion holes 40, 4 formed in the bottom wall 28a.
The outside through 0.

Reference numeral 41 denotes a sliding body which is slidably disposed in the center of the rear end of the cassette case 28 in the front-rear direction and has a rectangular block shape slightly longer in the front-rear direction. Is formed with a notch 42 facing rearward, and a circular spring arrangement hole 43 opened in the rear end surface.

The sliding body 41 is formed with a concave portion 44 which is open at the lower end surface thereof, and the lower end portion of the rear surface of the concave portion 44 is an inclined surface 44a which is inclined backward and downward.

Numeral 45 denotes a coil spring, the front end of which is inserted into the spring arrangement hole 43 of the sliding member 41, and the rear end thereof is elastically contacted with the inner surface of the rear wall 28b of the cassette case 28. Has a forward moving force applied to it. A stopper (not shown) is formed in the cassette case 28 to limit the front end of the moving range of the sliding member 41.

Reference numeral 46 denotes a bottom wall 28a of the cassette case 28.
The recess 44 of the sliding body 41, in particular, the portion including the inclined surface 44 a faces the outside of the cassette case 28 through the insertion hole 46.

Reference numerals 47, 47 denote locking members for locking the tape reels 31, 31. The lock members 47 and 47
Has a symmetrical shape, so that the right lock member 47 will be described in detail, and the left lock member 47 will have the same reference numerals as those of the corresponding parts of the right lock member 47. And the description is omitted.

Reference numeral 48 denotes a cylindrical base.
An arm piece 49 substantially in the shape of a letter is protruded substantially leftward from the outer peripheral surface of the claw piece 5 and extends substantially forward from the base 48.
0 is protruding. A spring hook 51 is protruded from the upper surface of a substantially middle portion of the arm piece 49. The base 48 of the lock member 47 is rotatably fitted to a support pin 52 erected on the bottom wall 28 a of the cassette case 28.

Numeral 53 denotes a torsion spring, the coil portion 53a of which is externally supported by the support pin 52, one arm 53b is in elastic contact with the inner surface of the rear wall 28b of the cassette case 28, and the other arm 53c is The spring member 51 is elastically contacted with the spring hook portion 51 of the lock member 47 from the rear.
7 is urged in a clockwise direction as viewed from above, so that the left end portion 49 a of the arm piece 49 of the lock member elastically contacts the engagement notch 42 on the right side of the sliding body 41.

When the sliding body 41 is located at the front end of the moving range, the tips of the claw pieces 50, 50 of the locking members 47, 47 are engaged with the engaging teeth 3 of the tape reels 31, 31.
5, 35 to lock the tape reels 31, 31 in that position.

When the sliding body 41 moves backward,
Lock member 47, tip 49 of arm piece 49,49 of 47
a, 49a are pressed rearward by the engagement notches 42 of the sliding body 41, whereby the right locking member 47 is turned counterclockwise when viewed from above, and the left locking member 47 is turned clockwise, as viewed from above. Moved, the claw pieces 50, 5
0 are the engagement teeth 35, 35 of the tape reels 31, 31.
, Thereby unlocking the tape reels 31, 31.

Reference numeral 54 denotes a recording / reproducing apparatus, and 55 denotes its chassis.

Reference numerals 56, 56 denote guide shafts, and the chassis 5
5 is arranged so as to open at an angle of about 90 degrees from the center to the near side.

Reference numerals 57, 57 denote guide rails which are spaced apart from the guide shafts 56, 56 so as to extend in parallel with the respective guide shafts 56, 56 and face the guide shafts 56, 56. Guide grooves 57a, 5
7a are formed.

Reference numerals 58, 58 denote reel base blocks which support the reel bases 59, 59 and the reel base motors 60, 60. The reel bases 59, 59 are directly rotated by the respective reel base motors 60, 60. It has become.

Each of the reel base blocks 58 has a bearing 61 on one side, and slide projections 62 on the other side. ,
61 are slidably fitted on the guide shafts 56, 56, and the sliding projections 62, 62
The guide grooves 57a of the 57 are slidably engaged.

Reference numerals 63, 63 denote racks, which protrude horizontally on the side of the reel base blocks 58, 58 on which the bearings 61, 61,... Are formed.

Reference numerals 64, 64 denote drive gears in the form of spur gears rotatably supported at a position on the front side of the chassis 55 with a slight distance to the left and right and rotatably engaged with the racks 63, 63 of the reel base blocks 58, 58. doing.

Worm wheels 65, 65 are rotatably supported on the lower side of the drive gears 64, 64 and coaxially with the drive gears 64, 64. The worm wheels 65, 65 and the drive gear 64 , 64 is the limiter spring 6
6, 66 are integrally connected.

Reference numeral 67 denotes a worm, which is movably supported in the axial direction and non-rotatably supported by a shaft 68 which extends in the front-rear direction on the front side of the chassis 55 and is rotatably supported with respect to the chassis 55; 65, 65 are engaged.

Reference numerals 69, 69 denote coil springs,
The worm 67 is pressed from both ends of the shaft 8, thereby holding the worm 67 substantially at the center of the shaft 68.

An input gear 70 in the form of a spur gear is fixed to the front end of the shaft 68.

Reference numeral 71 denotes a motor, which is fixed to the chassis 55 below the worm 67 and has a rotating shaft 7.
An output gear 72 having a flat gear shape is fixed to 1a.
The output gear 72 is meshed with the input gear 70.

When the motor 71 is driven, the rotation is transmitted through the output gear 72 and the input gear 70, and the worm 67 is rotated. And warm 6
When the worm wheel 7 rotates, the worm wheels 65 and 65 are rotated in opposite directions when viewed from above, and
The rotation of 5, 65 is transmitted to drive gears 64, 64 via limiter springs 66, 66, and the drive gears 64, 64 feed racks 63, 63 of the reel base blocks 58, 58. Table block 58
And 58 are moved toward or away from each other.

Reference numeral 73 denotes a support shaft which is provided upright at a position between a driving portion including the motor 71 and the worm 67 and a portion where the guide shafts 56 and 56 meet, that is, a substantially central portion of the chassis 55.

Numeral 74 denotes a positioning plate which is provided on the left side of the support shaft 73 and slightly toward the back side.

Reference numeral 75 denotes a reel unlocking member for the small tape cassette 1, and reference numeral 76 denotes a square block-shaped main portion.

An insertion hole 77 is formed in a portion approaching one end of the main portion 76 and vertically penetrating therethrough, and an unlocking pin 7 is formed from the upper surface of the portion approaching the other end of the main portion 76.
8 are erected. Upper end 7 of the lock release pin 78
8a is formed so as to be tapered. A stopper piece 79 projects rightward from the right side of the upper end of the main portion 76 where the lock release pin 78 is erected.

In such a reel unlocking member 75, the support shaft 73 is slidably inserted into an insertion hole 77 thereof.
As a result, it is supported by the support shaft 73 so as to be vertically movable. Reference numeral 80 denotes a stop washer fixed to the upper end of the support shaft 73. The stop washer 80 prevents the reel unlocking member 75 from coming off the support shaft 73.

Numeral 81 denotes a coil spring, which is provided between the main part 76 of the reel unlocking member 75 and the chassis 55 to support the shaft 7.
3 and are compressed. Accordingly, the upward movement of the reel lock release member 75 is urged by the resilient force of the coil spring 81, and the upper surface of the main portion 76 is stopped by the stop washer 80 when no pressing force is applied from above. It is located where it abuts.

Arm 8 projecting from the lower end of coil spring 81
1a elastically contacts the lower end of the rear edge of the positioning plate 74 from behind, and the arm piece 81b projecting from the upper end of the coil spring 81 elastically contacts the lower end of the right side surface of the main portion 76 of the reel unlocking member 75. Accordingly, the reel lock release member 75 is urged to rotate in the counterclockwise direction when viewed from above, so that the left side surface of the main portion 76 contacts the right side surface of the positioning plate 74, Positioned.

Reference numeral 82 denotes a reel unlocking member for the large tape cassette 27, and the worm wheels 65 and 65
And protrudes upward from a position between them. In particular,
A part of the bracket 83 such as the worm 67 and the motor 71 made of a sheet metal material is formed to protrude upward. The upper end 82a of the reel unlocking member 82 is tapered.

In addition, the recording / reproducing apparatus 54 is provided with a head drum, a capstan, and the like, but those not directly related to the present invention are not shown or described.

Next, the operation will be described.

When the small tape cassette 1 is inserted into a cassette holder (not shown), a sensor (not shown) detects the insertion and issues a command to drive the motor 71, thereby driving the motor 71 and driving the reel base block. 58,
58 moves to the small cassette position shown in FIG.

When the reel block 58 moves to the small cassette position, the right reel block 5
The portion on which the rack 63 is formed enters the reel lock releasing member 75 immediately below the stopper piece 79. As a result, the reel unlocking member 75 cannot be lowered.

When the small tape cassette 1 held by the cassette holder descends to the cassette mounting position, the upper end 78a of the unlocking pin 78 of the reel unlocking member 75 moves from the insertion hole 17 of the small tape cassette 1. It enters the cassette case 2. Then, the upper end portion 78a of the lock release pin 78 that has entered the cassette case 2 enters the concave portion 17 of the sliding member 14 and presses the inclined surface 17a. The sliding body 14 is provided with a backward moving force by being pressed on the inclined surface 17 a, and moves backward against the moving force of the coil spring 18. And the sliding body 1
4 moves rearward, the arm pieces 2 of the lock members 20 and 20 move.
The tip portions 22a of the second and second 22 are pressed rearward, and the lock members 20 and 20 rotate toward unlocking the tape reels 5 and 5, and the claw pieces 23 and 2 thereof are rotated.
The distal end of 3 is separated from the engaging teeth 9 of the tape reels 5.

As described above, the lock on the tape reels 5, 5 is released.

When the large tape cassette 27 is inserted into a cassette holder (not shown), it is detected by a sensor (not shown) and the motor 71 is driven to move the reel base blocks 58, 58 to the large cassette position shown in FIG. Is moved.

When the reel base blocks 58 move to the large cassette position, the portion of the right reel base block 58 where the rack 63 is formed moves from below the stopper piece 79 of the reel unlocking member 75. As a result, there is no obstacle to the downward movement of the reel unlocking member 75.

When the large tape cassette 27 descends to its mounting position, the upper end 82a of the reel unlocking member 82 enters the cassette case 28 through the insertion hole 46 of the cassette case 28, The inclined surface 44a of the concave portion 44 is pressed, whereby the sliding body 41 is moved rearward, and the lock on the tape reels 31, 31 is released.

On the other hand, the bottom wall 28a of the cassette case 28
Presses the upper end of the lock release pin 78 of the reel lock release member 75 for the small tape cassette 1. As a result, the reel unlocking member 75 moves downward against the elastic force of the coil spring 81 so that the mounting of the large tape cassette 27 is not hindered.

[0071]

As is apparent from the above description, the recording / reproducing apparatus of the present invention has at least different sizes.
Reel bases corresponding to two types of tape cassettes, large and small
Move the reel base to get closer or further away
Means and inserted into two types of tape cassettes, large and small
And a pair of tape reels around which a magnetic tape is wound.
Lock release member for large tape cassettes
And a small tape cassette reel unlocking member
A recording / reproducing apparatus, wherein a small tape cassette is a recording / reproducing apparatus.
When the tape cassette is inserted into the
The lock release member is inserted into the small tape cassette and the tape is released.
Unlock the reel and record / play back the large tape cassette
When inserted into the device, reel for small tape cassette
The unlocking member is pushed down on the bottom of the large tape cassette.
And large tape cassette reel lock release unit
Material is inserted into the large tape cassette and the tape reel
The lock is configured to be released .

Therefore, in the recording / reproducing apparatus of the present invention,
When a large tape cassette is mounted, the reel unlocking member for the small tape cassette is pushed and moved by the large tape cassette and does not hinder the mounting of the large tape cassette. There is no need to provide a part where the reel unlocking member escapes,
Further, the member that moves to the unlock position in accordance with the insertion of the reel unlocking member can be disposed at a position that does not interfere with the tape reel, and it is not necessary to increase the size of the large tape cassette more than necessary.

The specific shapes and structures shown in the above embodiments are merely examples for embodying the present invention, and the technical scope of the present invention is interpreted in a limited manner. It is not something to be done.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a small tape cassette showing a state in which a tape reel is locked.

FIG. 2 is a horizontal sectional view of the small tape cassette showing a state in which the lock of the tape reel is released.

FIG. 3 is a bottom view of the small tape cassette.

FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 2;

FIG. 6 is an enlarged view of a portion A in FIG. 1;

FIG. 7 is a horizontal sectional view of the large tape cassette showing a state where the tape reel is locked.

FIG. 8 is a horizontal sectional view of the large tape cassette showing a state where the lock of the tape reel is released.

FIG. 9 is a bottom view of the large tape cassette.

FIG. 10 is an enlarged sectional view taken along line XX of FIG. 7;

FIG. 11 is an enlarged sectional view taken along line XI-XI in FIG. 8;

FIG. 12 is an enlarged view of a portion B in FIG. 7;

FIG. 13 is a plan view showing the recording / reproducing apparatus in a state where a small tape cassette is mounted.

FIG. 14 is a front view partially cut away.

FIG. 15 is a sectional view of a main part.

FIG. 16 is a cross-sectional view of a main part of a recording / reproducing apparatus to which a small tape cassette is mounted.

FIG. 17 is a plan view showing the recording / reproducing apparatus in a state where a large tape cassette is mounted.

FIG. 18 is a front view partially cut away.

FIG. 19 is a sectional view of a main part.

FIG. 20 is a cross-sectional view of a main part of a recording / reproducing apparatus to which a large tape cassette is mounted.

[Explanation of symbols]

Reference Signs List 1 small tape cassette 5 tape reel 10 magnetic tape 27 large tape cassette 31 tape reel 36 magnetic tape 54 recording / reproducing device 58, 63, 64, 65, 66, 67, 70, 71, 7
2 Means for moving the reel base 59 Reel base 75 Reel unlocking member for small tape cassette 82 Reel unlocking member for large tape cassette

Claims (1)

(57) [Claims] At least two types of large and small having different sizes.
Move the reel units closer or farther to accommodate the tape cassette.
Means for moving the reel base for the purpose of escaping, and the means inserted into the large and small tape cassettes.
To lock a pair of tape reels around which a magnetic tape is wound.
And a large tape cassette reel unlocking member
Having a reel unlocking member for a small tape cassette
A recording / reproducing apparatus, wherein the small tape cassette is inserted into the recording / reproducing apparatus.
Sometimes, the small tape cassette reel lock release unit
Material is inserted into the small tape cassette and the tape
Unlock Lumpur, the large tape cassette is inserted into the recording and reproducing apparatus
Sometimes, the small tape cassette reel lock release unit
When the material is pushed down on the bottom of the large tape cassette,
In addition, the reel unlocking member for the large tape cassette
The tape reel inserted into the large tape cassette
Characterized in that it is configured to unlock
Recording and playback device.