JPH05314609A - Reel lock release mechanism for recording / playback device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In a recording / reproducing apparatus that uses two or more types of tape cassettes in which the reel lock release members are inserted at different positions, the reel lock release member for a small tape cassette is a large tape. Make sure that the cassette does not get in the way when it is attached and does not become large in shape. [Structure] A reel lock release member 75 for a small tape cassette 1 is supported on a support shaft 73 so as to be vertically movable, and a coil spring 81 urges an upward movement force. When the reel base block 58 supporting the reel base 59 moves to the mounting position of the small tape cassette, the portion where the rack is formed is located below the stopper piece 79 of the reel lock releasing member, and the downward movement is blocked. .. When the reel base block moves the large tape cassette to the mounting position, there is nothing that obstructs the downward movement of the reel lock member, and when the large tape cassette is mounted, the reel lock member is pressed by the large tape cassette and the reel lock member becomes a coil spring. It does not interfere with the installation by descending against.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reel lock releasing mechanism for a novel recording / reproducing apparatus. More specifically, in a recording / reproducing apparatus that uses two or more types of tape cassettes that are different in size and have different positions for inserting reel lock releasing members for unlocking the tape reel, a large tape cassette The reel lock release member for the small tape cassette does not hinder the mounting of the large tape cassette during use so that the shape of the large tape cassette does not become larger than necessary.

[0002]

2. Description of the Related Art In a so-called compatible recording / reproducing apparatus which uses tape cassettes having different sizes, locks of tape reels of large and small tape cassettes are released at the same position.

[0003]

However, since the lock release 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, the large tape cassette has a position between the two tape reels. A member that moves to the unlock position according to the insertion of the reel lock releasing member must be arranged at the position
For this reason, there has been a problem that the space between the two tape reels must be increased, and the size of the large tape cassette becomes large.

[0004]

In order to solve the above problems, the reel lock releasing mechanism of the recording / reproducing apparatus according to the present invention has a reel lock releasing member for releasing the lock with respect to the tape reel, which has different sizes. A reel lock releasing mechanism of a recording / reproducing apparatus using two or more types of tape cassettes having different insertion positions, wherein a reel lock releasing member for a small tape cassette is movable in the moving direction of the tape cassette. ..

[0005]

Therefore, in the reel lock releasing mechanism of the recording / reproducing apparatus of the present invention, when the large tape cassette is loaded, the reel lock releasing member for the small tape cassette is pushed and moved by the large tape cassette to move the large tape cassette. Since it does not interfere with the loading of the cassette, it is not necessary to provide a part for escaping the reel lock release member for the small tape cassette in the large tape cassette, and also to the lock release position according to the insertion of the reel lock release member. The moving member can be arranged at a position where it does not interfere with the tape reel, and it is not necessary to increase the size of the large tape cassette more than necessary.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the reel lock releasing mechanism 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 is a small tape cassette, 2 is 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 a tape is provided at both left and right end portions of the front surface thereof. Outlets 3 and 3 are formed, and a portion of the front surface of the cassette case 2 between the tape outlets 3 and 3 serves as a mouth portion 4 that is opened forward and downward. The mouse portion 4 is a portion for inserting a tape pull-out member, that is, a tape loading member when the tape cassette 1 is mounted in the recording / reproducing apparatus.

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

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

A part of the magnetic tape 10 is led out of the cassette case 2 through the tape outlets 3 and 3, and is bridged along the front surface of the mouse portion 4 when not in use. 1
Reference numerals 1 and 11 denote in-cassette guides formed at the ends of the tape outlets 3 and 3 on the mouse portion 4 side, and the magnetic tape 10 is wound around when not in use.

Reference numeral 12 denotes a front lid rotatably supported on the front surface of the cassette case 2, and covers and protects the front surface side of the magnetic tape 10 located along the front surface of the mouse portion 4 when not in use. During use, the magnetic tape 10 is pivoted upward to open the front side of the magnetic tape 10.

Reel stand engaging holes 6a, 6a formed at the lower end surfaces of the reel hubs 6, 6 of the tape reels 5, 5 are bottom wall 2a of the cassette case 2.
It is exposed to the outside through the reel stand insertion holes 13, 13 formed in.

Numeral 14 is a sliding member disposed in the center of the rear end portion of the cassette case 2 so as to be slidable in the front-rear direction, and has a long rectangular block shape in the longitudinal direction, and is provided on both sides of the rear end portion. Is formed with an engagement notch 15 facing rearward, and a circular spring placement hole 16 opened on the rear end face.

A concave portion 17 having an opening at the lower end surface is formed in the sliding body 14, and the lower end portion of the rear surface of the concave portion 17 is an inclined surface 17a which is inclined rearward and downward.

Reference numeral 18 denotes a coil spring, the front end portion of which is inserted into the spring placement hole 16 of the sliding body 14 and the rear end of which is elastically contacted with the inner surface of the rear surface wall 2b of the cassette case 2, whereby the sliding body 14 is provided. Is urged to move forward. 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 passed through the insertion hole 19.
The concave portion 17 of No. 4, particularly the portion including the inclined surface 17a, faces the outside of the cassette case 2.

Reference numerals 20 and 20 denote lock members for locking the tape reels 5 and 5. Since the locking members 20 and 20 have a bilaterally symmetrical shape, the right locking member 20
Will be described in detail, and the left lock member 20 will be denoted by the same reference numerals as those used for the same portions of the right lock member 20 and will not be described.

Reference numeral 21 denotes a cylindrical base portion, and the base portion 21
A substantially V-shaped arm piece 22 is provided so as to project from the outer peripheral surface thereof to the left, and a claw piece 23 is provided so as to project substantially forward from a substantially middle portion of the arm piece 22. A spring hook 24 is provided on the upper surface of the portion of the claw piece 23 near the arm piece 22. The base of the lock member 20 is a support pin 2 erected on the bottom wall 2a of the cassette case 2.
5 is rotatably fitted on the outer surface.

Reference numeral 26 is a torsion spring, the coil portion 26a of which is externally supported by the support pin 25, one arm 26b elastically contacts the inner surface of the rear wall 2b of the cassette case 2, and the other arm 26c thereof. Spring hook portion 2 of the lock member 20
4 is elastically contacted with the lock member 4 from the rear side, whereby the lock member 20 is urged by a rotational force in the clockwise direction when viewed from above, so that the left end 22a of the arm member 22 of the lock member is located on the right side of the sliding body 14. It makes elastic contact with the engaging notch 15.

Therefore, when the sliding body 14 is located at the front end of the moving range, the tips of the claw pieces 23, 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 tip ends of the arm pieces 22, 22 of the lock members 20, 20 are pushed 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 left lock member 20 moves. The lock member 20 is rotated in the clockwise direction, respectively, so that the tips of the claw pieces 23, 23 are separated from the engaging teeth 9, 9 of the tape reels 5, 5.
The lock on the tape reels 5, 5 is released.

Reference numeral 27 is a large tape cassette, 28 is a cassette case thereof, and the cassette case 28 is in the shape of a flat box having a horizontally long rectangular shape when viewed from above. The cassette case 28 is formed to have a lateral width and a longitudinal width that are considerably larger than those of the cassette case 2 of the small tape cassette 1.

Tape outlets 29, 29 are formed on the front surface of the cassette case 28 near the left and right ends, and the tape outlet 29 of the front portion of the cassette case 28 is formed.
The portion between the points 29 and 29 is a mouth portion 30 that is opened forward and downward. The mouse portion 30 is a tape cassette 2
Reference numeral 7 is a portion for inserting a tape pull-out member, that is, a tape loading member when the recording / reproducing apparatus is mounted.

Reference numerals 31 and 31 denote tape reels rotatably housed in the cassette case 28 side by side. The tape reels 31 and 31 are cylindrical reel hubs 32 and 3.
2 and flanges 33, 33 and 34, 34 projecting laterally from the upper and lower ends of the reel hub, and engaging teeth 35, 35 for locking are provided on the periphery of the lower flanges 34, 34.
... are formed.

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

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

Further, concave portions 38, 38 are formed at positions near the left and right ends of the front end portion of the cassette case 28, the recesses 38 having a narrow left-right width and extending in the front-back direction.

Reference numeral 39 denotes a front lid rotatably supported on the front surface of the cassette case 28. The magnetic tape 36 is located along the front surface of the mouse portion 30 when not in use.
The front side of the magnetic tape 36 is protected by covering the front side of the magnetic tape 36 and is rotated upward to open the front side 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.

Further, reel base engaging holes 32a, 32a formed in the reel hubs 32, 32 of the tape reels 31, 31 so as to open at the lower end surfaces thereof are the cassette case 2.
8, the reel base insertion holes 40, 4 formed in the bottom wall 28a of
It is exposed to the outside through 0.

Reference numeral 41 denotes a sliding member which is slidably arranged in the front-rear direction in the center of the rear end of the cassette case 28, and has a long rectangular block shape in the longitudinal direction, and is provided on both sides of the rear end. Has a rearward facing engagement notch 42, and a circular spring disposition hole 43 that is open at the rear end surface.

A concave portion 44 is formed in the lower end surface of the sliding body 41, and the lower end portion of the rear surface of the concave portion 44 is an inclined surface 44a which is inclined rearward and downward.

Reference numeral 45 denotes a coil spring, the front end portion of which is inserted into the spring placement hole 43 of the sliding body 41, and the rear end thereof is elastically contacted with the inner surface of the rear surface wall 28b of the cassette case 28, whereby the sliding body 41 is provided. Is urged to move forward. A stopper (not shown) is formed in the cassette case 28 to limit the front end of the moving range of the sliding body 41.

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

Reference numerals 47 and 47 are lock members for locking the tape reels 31 and 31. Incidentally, the lock members 47 and 47
Has a symmetrical shape, the right-side lock member 47 will be described in detail, and the left-side lock member 47 has the same reference numerals as those of the right-side lock member 47. Is attached and the description is omitted.

Reference numeral 48 is a cylindrical base, and the base 48
A substantially V-shaped arm piece 49 is provided so as to protrude from the outer peripheral surface toward the left side, and the claw piece 5 extends substantially forward from the base portion 48.
0 is projected. Further, a spring hooking portion 51 is provided on the upper surface of a substantially middle portion of the arm piece 49. The base portion 48 of the lock member 47 is rotatably fitted on the support pin 52 provided upright on the bottom wall 28 a of the cassette case 28.

Reference numeral 53 is a torsion spring, the coil portion 53a of which is externally supported by the support pin 52, one arm 53b elastically contacts the inner surface of the rear wall 28b of the cassette case 28, and the other arm 53c thereof. The spring hook portion 51 of the lock member 47 is elastically contacted from the rear side, whereby the lock member 4
A turning force in the clockwise direction when viewed from above is urged on the lever 7, so that the left end portion 49a of the arm piece 49 of the lock member elastically contacts the engaging notch 42 on the right side of the sliding body 41.

However, 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 lock members 47, 47 are the engaging teeth 3 of the tape reels 31, 31.
Engage with 5, 35 to lock the tape reels 31, 31 in that position.

When the sliding body 41 moves rearward,
Tip portions 49 of the arm members 49, 49 of the lock members 47, 47
a and 49a are pushed rearward by the engagement notches 42 of the sliding body 41, whereby the right locking member 47 rotates counterclockwise as viewed from above, and the left locking member 47 rotates clockwise. Being moved, the claw pieces 50, 5
The leading end of 0 is the engaging teeth 35, 35 of the tape reel 31, 31.
The tape reels 31 and 31 are unlocked.

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

Reference numerals 56 and 56 are guide shafts, and the chassis 5
It is arranged so as to open from the center of 5 toward the front side at an angle of approximately 90 degrees.

Reference numerals 57 and 57 denote guide rails which are spaced apart from the guide shafts 56 and 56 and extend parallel to the guide shafts 56 and 56, and face the guide shafts 56 and 56. Side guide grooves 57a, 5
7a is formed.

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

.. are formed on one side of the reel base blocks 58, 58, and sliding protrusions 62, 62 are formed on the other side of the reel base blocks 58, 58. ,
61 are slidably fitted onto the guide shafts 56, 56, and the sliding protrusions 62, 62 are fitted on the guide rails 57, 56.
The guide grooves 57a, 57a of 57 are slidably engaged.

Reference numerals 63 and 63 denote racks, which are horizontally projected on the side of the reel base blocks 58, 58 on which the bearing portions 61, 61, ... Are formed.

Reference numerals 64 and 64 denote drive gears in the shape of a spur gear which are rotatably supported at a position on the front side of the chassis 55 with a slight distance from each other and mesh with the racks 63 and 63 of the reel base blocks 58 and 58. is doing.

Reference numerals 65 and 65 denote worm wheels that are rotatably supported below the drive gears 64 and 64 and coaxially with the drive gears 64 and 64. The worm wheels 65 and 65 and the drive gear 64 are rotatably supported. , 64 are limiter springs 6
They are integrally connected via 6, 66.

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

Reference numerals 69 and 69 are coil springs, and the shaft 6
The worm 67 is pressed from both ends of the shaft 8 to hold the worm 67 at the substantial 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 its rotating shaft 7
An output gear 72 having a spur gear shape is fixed to 1a,
The output gear 72 is meshed with the input gear 70.

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

Reference numeral 73 denotes a support shaft which is erected at a position between a drive portion including the motor 71, the worm 67 and the like, and an engaging / disengaging portion of the guide shafts 56, 56, that is, a substantially central portion of the chassis 55.

Reference numeral 74 denotes a positioning plate which is erected on the left side of the support shaft 73 at a position closer to the rear side.

Reference numeral 75 is a reel lock releasing member for the small tape cassette 1, and 76 is a square block-shaped main portion.

An insertion hole 77 is formed at a portion near the one end of the main portion 76 so as to vertically penetrate therethrough, and the lock release pin 7 is formed from the upper surface of the portion near the other end of the main portion 76.
8 are erected. The upper end 7 of the lock release pin 78
8a is formed to be tapered. Further, a stopper piece 79 is projected rightward from the right side of the upper end portion of the main portion 76 where the lock release pin 78 is erected.

The support shaft 73 is slidably inserted into the insertion hole 77 of the reel lock releasing member 75.
Thereby, 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 lock releasing member 75 from coming off the support shaft 73.

Reference numeral 81 denotes a coil spring, which is provided between the main portion 76 of the reel lock releasing member 75 and the chassis 55 to support the support shaft 7.
3 is fitted and compressed. Therefore, the reel lock releasing member 75 is urged to move upward by the elastic force of the coil spring 81, and when the pressing force from above is not applied, the upper surface of the main portion 76 becomes the stop washer 80. It is located where it abuts.

Arm piece 8 protruding from the lower end of the 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 protruding from the upper end of the coil spring 81 elastically contacts the lower end of the right side surface of the main part 76 of the reel lock releasing member 75. As a result, the reel lock releasing member 75 is urged by a turning force in the counterclockwise direction when viewed from above, and therefore, 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 lock releasing member for the large tape cassette 27, which is the warm wheels 65 and 65.
It is projected upward from a position between and. In particular,
It is formed by protruding a part of a bracket 83 such as a worm 67 and a motor 71 made of a sheet metal material upward. The upper end portion 82a of the reel lock releasing member 82 is tapered.

In addition to this, the recording / reproducing apparatus 54 is provided with a head drum, a capstan, etc., but those not directly related to the present invention are not shown and 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 it and issues a command to drive the motor 71, whereby the motor 71 is driven and the reel base block. 58,
58 moves to the small cassette position shown in FIG.

When the reel base blocks 58, 58 are moved to the small cassette position, the reel base block 5 on the right side is moved.
The portion of the reel lock releasing member 75 in which the rack 63 is formed enters immediately below the stopper piece 79. As a result, the reel lock release member 75 cannot be lowered.

Then, when the small tape cassette 1 held by the cassette holder descends to the cassette mounting position, the upper end portion 78a of the lock release pin 78 of the reel lock release member 75 comes out from the insertion hole 17 of the small tape cassette 1. Intrude into 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 recess 17 of the sliding body 14 and presses the inclined surface 17a thereof. The sliding body 14 is given a moving force to the rear by pressing its inclined surface 17a, and moves backward against the moving force of the coil spring 18. And the sliding body 1
4 moves rearward, the arm members 2 of the lock members 20, 20
The tip portions 22a, 22a of the reference numerals 2, 22 are pressed rearward, and the locking members 20, 20 are rotated to unlock the tape reels 5, 5, so that the claw pieces 23, 2 thereof.
The tip of 3 is separated from the engaging teeth 9, 9 of the tape reels 5, 5.

As described above, the lock on the tape reels 5 and 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), the motor 71 is driven, and the reel base blocks 58, 58 are moved to the large cassette position shown in FIG. Will be moved.

When the reel base blocks 58, 58 are moved to the large cassette position, the portion of the right reel base block 58 on which the rack 63 is formed is moved from below the stopper piece 79 of the reel lock releasing member 75. Therefore, there is nothing that obstructs the downward movement of the reel lock releasing member 75.

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

On the other hand, the bottom wall 28a of the cassette case 28
The lower surface of the lock 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 lock releasing member 75 moves downward against the elastic force of the coil spring 81 and does not hinder the mounting of the large tape cassette 27.

[0071]

As is apparent from the above description, the reel lock releasing mechanism of the recording / reproducing apparatus of the present invention is different in size, and the reel lock releasing member for releasing the lock with respect to the tape reel is inserted. A reel lock releasing mechanism of a recording / reproducing apparatus using two or more types of tape cassettes having different positions, wherein a reel lock releasing member for a small tape cassette is movable in a moving direction of the tape cassette. ..

Therefore, in the reel lock releasing mechanism of the recording / reproducing apparatus of the present invention, when the large tape cassette is loaded, the reel lock releasing member for the small tape cassette is pushed and moved by the large tape cassette to move the large tape cassette. As it does not disturb the installation of the cassette,
It is not necessary to provide a portion for escaping the reel lock releasing member for the small tape cassette, and the member that moves to the lock releasing position in response to the insertion of the reel lock releasing member may be arranged at a position where it does not interfere with the tape reel. Yes, there is no need to increase the size of the large tape cassette.

It should be noted that 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 limitedly interpreted by these. It is not something that will be done.

[Brief description of 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 where the lock of the tape reel is released.

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

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

5 is an enlarged cross-sectional view taken along the line VV of FIG.

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

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

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

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

10 is an enlarged cross-sectional view taken along the line XX of FIG.

11 is an enlarged cross-sectional view taken along the line XI-XI of FIG.

FIG. 12 is an enlarged view of a B part in FIG.

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 showing a partially cutaway view.

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

FIG. 16 is a cross-sectional view of a main part of a recording / reproducing device equipped with a small tape cassette.

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 showing a cutaway portion.

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 equipped with a large tape cassette.

[Explanation of symbols]

1 small tape cassette 5 tape reel 27 large tape cassette 31 tape reel 58 member which moves according to the size of the tape reel to be mounted 75 reel lock release member for small tape cassette 82 reel lock release member for large tape cassette

Claims (2)

[Claims] 1. A reel lock releasing mechanism for a recording / reproducing apparatus, which uses two or more types of tape cassettes having different sizes and different positions for inserting reel lock releasing members for releasing a lock on a tape reel. ,
A reel lock releasing mechanism for a recording / reproducing apparatus, wherein a reel lock releasing member for a small tape cassette is movable in a moving direction of the tape cassette. 2. A member that moves according to the size of the tape cassette to be mounted moves to a position that prevents the reel lock release member for the small tape cassette from moving when the small tape cassette is mounted. 1. The reel lock release mechanism of the recording / reproducing apparatus according to 1.