JPH06162634A - Recording / reproducing device and tape cassette - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize cost reduction of the recording / reproducing device and reliable locking and releasing of the reel. [Structure] The magnetic tape 5 in the cassette cases 2 and 19,
The tape reels 6, 6'23, 23 'wound around 22 are rotatably accommodated, and the reel lock member 8 is movable between a lock position for locking the tape reel and a lock release position for unlocking the tape reel. , 25 are provided, and the lock release member 61 provided in the recording / reproducing apparatus is inserted into the cassette case and presses the reel lock member so that the reel lock member is moved to the lock release position. In a recording / reproducing apparatus capable of using tape cassettes 1 and 18 having different heights, the lock releasing member is erected on a movable plate 55 movable on a plane parallel to the chassis 37. Was moved to the insertion position corresponding to the attached tape cassette.

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 and tape cassette. More specifically, the cost of the recording / reproducing apparatus can be reduced, and the reel can be reliably locked and unlocked.

[0002]

2. Description of the Related Art In a tape cassette in which a tape reel wound with a recording medium tape is rotatably housed in a cassette case, in order to prevent the recording medium tape from loosening, the tape reel is prevented from rotating when not in use. A reel lock mechanism for locking is provided.

In such a reel lock mechanism, a reel lock member which moves between a lock position where the tape reel is locked so as not to rotate and a lock release position where the tape is released is arranged in the cassette case, and recording is performed. There is a device in which the reel lock member is moved to the lock release position by inserting the lock release member provided in the reproducing apparatus into the cassette case.

[0004]

By the way, there is a so-called compatible type recording / reproducing apparatus which can use two kinds of tape cassettes having different sizes.

In a compatible type recording / reproducing apparatus, due to tape loading and other reasons, the distance between the chassis surface and the bottom surface of the tape cassette when the tape cassette is mounted is small and large. It can be different.

In such a case, in order to unlock the tape reels of the tape cassettes having different sizes with the single unlocking member, the unlocking member must be moved three-dimensionally. There is a problem that the moving mechanism becomes complicated.

Further, the size of the tape reel is different between the large tape cassette and the small tape cassette.
The size of the reel lock member must also be changed according to the size of the tape reel.

If the size of the reel lock member changes, the moving stroke for unlocking also differs for large and small tape cassettes, and the shape of the lock releasing member must be changed for each large and small tape cassette. I won't.

Under these circumstances, it has been impossible in the past to unlock the tape reels of the large and small tape cassettes with a single unlocking member.

[0010]

In order to solve the above-mentioned problems, the recording / reproducing apparatus of the present invention forms a lock releasing member so as to be movable on a plane parallel to the chassis, and mounts the lock releasing member. The tape cassette is moved to the insertion position corresponding to the tape cassette.

In the tape cassette of the present invention, a tape reel having a recording medium tape wound therein is rotatably housed in a cassette case, and a lock position for locking the tape reel and an unlock position for releasing the lock are provided. A reel lock member is movably provided between the reel lock member, and the lock release member provided in the recording / reproducing apparatus is inserted into the cassette case and acts on the vertical portion of the reel lock member to move the reel lock member to the unlock position. Two types of tape cassettes, large and small, that are
The lower ends of the vertical portions are located at different heights.

[0012]

Therefore, in the present invention, since the single lock releasing member can be two-dimensionally moved to unlock the tape reels of the tape cassettes of different sizes, the mechanism becomes complicated. You can avoid things.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the recording / reproducing apparatus and tape cassette of the present invention will be described below with reference to the illustrated embodiments.

First, the tape cassette will be described.

Reference numeral 1 is a large tape cassette, and 2 is its cassette case.

The cassette case 2 is in the shape of a flat box having a horizontally long rectangular shape when viewed from above, and has tape outlets 3 and 3'formed at the left and right ends of the front surface thereof. A mouth portion 4 that is open forward and downward is formed between the mouse portion 4 and

In the cassette case 2, tape reels 6 and 6 ', to which both ends of the magnetic tape 5 are fixed and wound, are rotatably housed.
The reel base engaging holes 7a, 7a opened at the lower ends of the hubs 7, 7 of 6'are formed.
7a is exposed to the outside through a reel stand insertion hole (not shown) formed in the bottom wall of the cassette case 2.

A part of the magnetic tape 5 is led out of the cassette case 2 through the tape outlets 3 and 3 ', and is located along the front surface of the mouth portion 4.

Reference numeral 8 denotes a reel lock member disposed in the center of the rear end of the cassette case 2 so as to be slidable in the front-rear direction, and has a sliding portion 9 having a substantially rectangular block shape and a front end of the sliding portion 9. Engaging pieces 10 and 10 'projecting obliquely forward from the surface so that their front ends are separated from each other.

The sliding portion 9 has a concave portion 11 opened at the lower surface thereof.
The rear surface of the recessed portion 11 is a vertical portion 12a which is substantially vertical except the lower end portion thereof, and the lower end portion continuing from the vertical portion 12a is a downwardly inclined slope portion 12b.

Reference numerals 13 and 13 stand upright from a bottom wall 2a at the center of the rear end of the cassette case 2 and are spaced apart from each other in the left-right direction and extend parallel to the front-rear direction.
3 is a sliding space in which the sliding portion 9 of the reel lock member 8 slides.

In the bottom wall 2a of the cassette case 2, an insertion hole 14 is formed in a portion of the bottom wall 2a located between the standing walls 13 and 13 for inserting a lock release member, which will be described later, into the cassette case 2. ing.

A coil spring 15 is provided on the rear end surface of the sliding portion 9 of the reel lock member 8 and the cassette case 2.
The reel lock member 8 is contracted between the inner surface of the rear wall 2b and the reel lock member 8 is urged by a forward moving force and is not received by the rearward moving force. , The front ends of the engaging pieces 10, 10 'are the tape reels 6,
The tape reels 6, 6'are rotated by engaging with engaging teeth 17, 17, ..., 17 ', 17', ... Formed on the peripheral portions of the lower flanges 16, 16 'of 6'. I've locked this off.

In addition, a front lid and the like for opening and closing the front surface of the magnetic tape 5 which is rotatably supported on the front surface of the cassette case 2 and spans along the front surface of the cassette case 2 are provided. , Illustration and description thereof are omitted.

18 is a small tape cassette, and 19 is its cassette case.

The cassette case 19 is in the form of a flat box having a horizontally long rectangular shape, which is considerably smaller than the cassette case 2 of the large tape cassette 1 when viewed from above, and the tape outlet 2
0, 20 ', a mouse portion 21, etc., and tape reels 23, 23' around which a magnetic tape 22 is wound are housed therein. 24 and 24 are tape reels 23,
Hubs 24a and 24a of 23 'are reel base engaging holes opened at the lower ends of the hubs 24 and 24. The reel base engaging holes 24a and 24a are reel bases of the tape reels 6 and 6'of the large tape cassette 1. It has substantially the same size as the engagement holes 7a, 7a.

Reference numeral 25 denotes a reel lock member disposed in the center of the rear end of the cassette case 19 so as to be slidable in the front-rear direction, and has a sliding portion 26 having a substantially rectangular block shape and the sliding portion 2.
6 has engaging pieces 27 and 27 'which project from the front end surface of the member 6 obliquely forward so that their front ends are separated from each other.

The sliding portion 26 has a concave portion 2 which is open at the lower surface thereof.
8 is formed, and the rear surface of the concave portion 28 is a vertical portion 29a that is substantially vertical except for the lower end portion thereof, and the lower end portion that follows the vertical portion 29a is a downwardly inclined slope portion 29b.

Reference numerals 30 and 30 denote standing walls which stand upright from the bottom wall 19a at the center of the rear end of the cassette case 19 and which are spaced apart from each other in the left-right direction and extend parallel to the front-rear direction.
The space between and 30 is a sliding space in which the sliding portion 26 of the reel lock member 25 slides.

The bottom wall 19 of the cassette case 19
An insertion hole 31 for inserting a lock release member, which will be described later, into the cassette case 19 is formed in a portion of the a located between the standing walls 30 and 30.

Reference numeral 32 denotes a coil spring, which is contracted between the rear end surface of the sliding portion 26 of the reel lock member 25 and the inner surface of the rear surface wall 19b of the cassette case 19,
As a result, the reel lock member 25 is urged by a forward moving force, and when the rearward moving force is not received, the front ends of the engaging pieces 27, 27 ′ have the tape reel 23, 23 ', engaging teeth 34, 34, ..., 34', 3 formed on the peripheral portions of the lower flanges 33, 33 '.
The tape reels 23, 23 'are locked so as not to rotate by engaging with 4', ....

Besides, a front lid and the like for opening and closing the front surface of the magnetic tape 22 rotatably supported on the front surface of the cassette case 19 and laid along the front surface of the cassette case 19 are provided. , Illustration and description thereof are omitted.

A video tape recorder 35 is a so-called compatible type which can use the above-mentioned tape cassettes 1 and 2 of two sizes.

Reference numerals 36 and 36 'denote reel base arms, the base ends of which are rotatably supported at a position closer to the front side of the mechanical chassis 37, which is the base body, with a slight distance from each other. Reel bases 38 and 38 'are rotatably supported at the rotating ends of the reel base arms 36 and 36'.

38a and 38'a are reel stands 38 and 38 '.
Is a reel engaging shaft projecting from the upper surface of the. Further, a brake drum 38 'is provided at the lower end of the reel table 38' on the supply side.
b is formed.

The reel base arms 36 and 36 'are rotated between the small cassette position shown in FIG. 2 and the large cassette position shown in FIG. When in the small cassette position, the axial distance between the reel stands 38 and 38 'is equal to the axial distance between the tape reels 23 and 23' of the small tape cassette 18,
Further, when in the large cassette position, the reel stands 38, 38 '
The distance between the axes is large. Tape reel 6 of tape cassette 1,
It is equal to the 6'axis distance.

Numerals 39 and 39 'are pull-out arms, one end of which is rotatably supported by the mechanical chassis 37, and pull-out guides 40 and 40' are erected at the other ends. Then, until the tape cassette 1 or 18 is loaded,
That is, in the initial state, the magnetic tape 5 or 22 is at the initial position shown by the chain double-dashed line in FIGS. 1 and 2, and when the magnetic tape 5 or 22 is pulled out from the cassette case 2 or 19 and is wound around the head drum, it is shown in FIG. When the reel base arms 36 and 36 'are in the small cassette position, the reel base arms 36 and 36' are rotated to the first withdrawal position shown in FIG. 1, and the reel base arms 36 and 36 'are in the large cassette position as shown in FIG. At this time, the pull-out arm 39 on the tape take-up side rotates to the second pull-out position shown in FIG.
9'rotates to the same pull-out position shown in FIGS.

That is, the pull-out arm 39 'on the tape supply side rotates to the same position regardless of whether the large tape cassette or the small tape cassette is used. Therefore, the position of the pull-out guide 40 'on the tape supply side is always the same when the tape is running.

Reference numeral 41 denotes a head drum which is provided on the inner side of the mechanical chassis 37 in a substantially central portion in the left-right direction, and has a fixed drum and a rotary drum, and a magnetic head (not shown) is supported on the rotary drum.

Reference numerals 42 and 42 denote tape loading blocks, which have loading guides 43 and 43 and tilt guides 44 and 44, respectively, and are moved along guide grooves 45 and 45 formed in the mechanical chassis 37, In the initial state, it is at the initial position shown by the chain double-dashed line in FIGS. 1 and 2, and when the tape is loaded, it is moved to the loading completion position located on the side of the head drum 41 on both sides of the head.

Reference numeral 46 denotes a capstan, which is rotated by a capstan motor 47 and projects above the mechanical chassis 37 at a position slightly separated to the right of the head drum 41.

Reference numeral 48 denotes a pinch roller arm, the base end portion of which is rotatably supported at a position closer to the right side on the far side from the center of the mechanical chassis 37. A pinch roller 49 is rotatably supported on the rotating end portion.
In the initial state, the pinch roller arm 48 is located at the initial position shown by the two-dot chain line in FIGS.
When reproducing or recording, the pinch roller 49 is moved to the pressure-bonding position where it is pressure-bonded to the capstan 46 via the magnetic tape 5 or 22 as shown by the solid line in the figure.

Reference numeral 50 denotes a tension regulator arm, which is rotatably supported at a position near one end of the tension regulator arm to a certain extent from the center of the mechanical chassis 37 to the left side on the innermost side. A tension pin 51 is erected on the other end of the tension regulator arm 50.

In the initial state, the tension regulator arm 50 is locked at the standby position extending substantially straight in the front-rear direction, and the lock is released at the time of reproduction or recording operation, and the elastic means is not shown. It is rotated clockwise when viewed from above by the moving force applied thereto, so that the portion of the magnetic tape 5 or 22 between the left-side pull-out guide 40 'and the loading guide 43 is elastically contacted from the outside. become.

52 is a band-shaped brake band,
One end thereof is supported by a support portion 53 near the left end of the central portion of the mechanical chassis 37, and the other end thereof is supported by a support portion 54 at one end of the tension regulator arm 50. The middle portion of the brake band 52 is wound around the brake drum 38'b of the reel stand 38 'on the supply side.

When the tape cassette 1 or 18 is mounted at the cassette mounting position of the video tape recorder 35, the pull-out guides 40, 40 ', the loading guides 43, 43, the slant guides 44, 44, and the pinch rollers located at the initial position. 48 is relatively inserted into the mouse portion 4 or 21 of the tape cassette 1 or 18. When the large tape cassette 1 is loaded, the reel stand 3 located at the large cassette position
The reel engaging shafts 38a, 38'a of 8, 38 'are engaged with the reel base engaging holes 7a, 7a of the tape reels 6, 6',
When the small tape cassette 18 is mounted, the reel engaging shaft 38a of the reel stand 38, 38 'in the small cassette position,
38'a is engaged with the reel base engaging holes 24a, 24a of the tape reels 23, 23 '.

Then, the tape loading block 4
2, 42 are moved to the loading completion position, the tape supply side pull-out guide 40 ′ is at the predetermined position shown in FIGS. 1 and 2, and the tape take-up side pull-out guide 40 is the large tape cassette 1.
1 is moved to the second position shown in FIG. 1 and the small tape cassette 18 is moved to the first position shown in FIG. 2, whereby the magnetic tape 5 or 22 is moved.
Is passed through a predetermined tape path.

When reproduction or recording is performed, the pinch roller 49 is pressed against the capstan 46 with the magnetic tape 5 or 22 interposed therebetween, and the tension regulator arm 50 is unlocked to the standby position and the ten pin pin 5 is released.
1 is elastically contacted with the magnetic tape 5 or 22 from the outside.

When the tension of the magnetic tape 5 or 22 on the supply side of the head drum 41 decreases, the tension regulator arm 50 rotates clockwise as viewed from above and its one end portion 54 (support portion of the brake band 52). Is moved away from the reel stand 38 ', the brake band 52 tightens the brake drum 38'b of the reel stand 38', whereby the magnetic tape 5 is released.
Alternatively, the tension of 22 is increased.

When the tension of the magnetic tape 5 or 22 on the supply side of the head drum 41 increases, the tension regulator arm 50 rotates counterclockwise as viewed from above, and one end 54 of the tension regulator arm 50 approaches the reel stand 38 '. Since it moves to the direction, the reel stand 3 of the brake band 52
The tightening of the 8'on the brake drum 38'b is weakened, which reduces the tension of the magnetic tape 5 or 22.

A movable plate 55 is movably supported in the front-rear direction on the mechanical chassis 37, and has guided grooves 56, 56, 56 extending in the front-rear direction formed therein. Guide pins 57, 57, 57 provided upright on the mechanical chassis 37 are slidably engaged with the mechanical chassis 37, so that the mechanical pins 37 are supported by the mechanical chassis 37 so as to be movable in the front-rear direction.

A rack gear 58 is formed on one of the two side edges extending in the front-rear direction of the moving plate 55, and the pinion gear is fixed to the output shaft 59a of the reduction gear motor 59 fixed to the mechanical chassis 37. 60 is meshed with the rack gear 58 of the moving plate 55.

Therefore, when the motor 59 rotates, the rack gear 5 is rotated by the pinion gear 60 that rotates.
8 is sent, so that the moving plate 55 is moved in the direction corresponding to the rotation direction of the motor 59.

Reference numeral 61 is a lock releasing member which is erected on the moving plate 55.

The lock releasing member 61 has a slightly thick plate shape whose width direction extends in the front-rear direction, and the front-rear width of the upper end portion 61a is smaller than the front-rear width of the other portion 61b.
The rear edge of the upper end portion 61a is located on the same plane as the rear edges of the other portions 61b.

A slanting surface portion 62a is formed on the upper end portion of the upper end portion 61a, and the vertical portion 62b is formed following the slanting surface portion 62a.

On the upper end portion of the other portion 61b, a sloped surface portion 63a is formed which is continuous with the vertical portion 62b and which descends to the front, and a vertical portion 63b is further formed following the sloped portion 63a.

On the mechanical chassis 37, there are a detection switch 64a pressed by the bottom surfaces of the small tape cassette 18 and the large tape cassette 1 mounted at the cassette mounting position and a detection switch 64b pressed only by the bottom surface of the large tape cassette 1. It is arranged and these detection switches 6
The detection signals from 4a and 64b are input to the microcomputer 65, and the microcomputer 65, which determines whether the tape cassette to be mounted is large or small, controls the driver 66 to drive the motor 59 and mount the moving plate 55. The tape cassette 1 or 18 is moved to a predetermined position according to the tape cassette 1 or 18.

5 to 7 are for explaining the reel lock releasing operation when the large tape cassette 1 is loaded.

When the large tape cassette 1 is loaded,
The moving plate 55 moves so that the lock releasing member 61 mounted thereon is located at a position corresponding to the insertion hole 14 of the large tape cassette 1.

When the large tape cassette 1 descends to the cassette mounting position, first, the lock releasing member 61
Is inserted into the cassette case 2 through the insertion hole 14, the sloped portion 62a at the upper end abuts on the sloped portion 12b of the reel lock member 8 (see FIG. 5), and the tape cassette 1 is further lowered from there, Since this is pressed substantially rearward, the reel lock member 8 is moved rearward against the elastic force of the coil spring 15 and its vertical portion 1
2a contacts the vertical portion 62b of the unlocking member 61 (see FIG. 6).

When the tape cassette 1 further descends from there, the sloped portion 12b of the reel lock member 8 comes into contact with the lower sloped portion 63a of the lock release member 61 (see FIG. 6), and the sloped portion 63a The slope portion 12b is pressed to move the reel lock member 8 further rearward,
Finally, the unlocked position is reached, and the vertical portion 12a contacts the lower vertical portion 63b of the unlocked member 61 and is held in the unlocked position (see FIG. 7).

8 and 9 are for explaining the reel lock releasing operation when the small tape cassette 18 is mounted. The mounting position of the small tape cassette 18 is higher than the mounting position of the large tape cassette 1.

When the small tape cassette 18 is loaded, the moving plate 55 is locked by the lock releasing member 61 mounted on it.
Moves to a position corresponding to the insertion hole 31 of the small tape cassette 18.

When the small tape cassette 18 descends to the cassette mounting position, first, the lock releasing member 6
1 is inserted into the cassette case 19 through the insertion hole 31, and the slope portion 62a at the upper end is the reel lock member 25.
Since the tape cassette 18 further abuts against the inclined surface 29b of the coil cassette 29 (see FIG. 8) and presses the tape cassette 18 substantially rearward, the reel lock member 25 resists the elastic force of the coil spring 32. And is moved to the lock releasing position on the rear side, and the vertical portion 29a is moved to the lock releasing member 6
It contacts the vertical portion 62b of No. 1 and is held in the unlocked position (see FIG. 9).

[0066]

As is apparent from the above description, in the recording / reproducing apparatus of the present invention, the tape reel having the recording medium tape wound therein is rotatably accommodated in the cassette case, and the lock for locking the tape reel is provided. A reel lock member is provided movably between a position and a lock release position for releasing the lock, and the lock release member provided in the recording / reproducing apparatus is inserted into the cassette case to press the reel lock member. A recording / reproducing apparatus capable of using tape cassettes of different sizes, in which a reel lock member is moved to a lock release position, wherein the lock release member is movable on a plane parallel to a chassis. The lock release member is formed and moved to an insertion position corresponding to the mounted tape cassette.

Further, in the tape cassette of the present invention, the tape reel having the recording medium tape wound therein is rotatably housed in the cassette case, and there are a lock position for locking the tape reel and an unlock position for unlocking the tape reel. A reel lock member is movably provided between the reel lock member, and the lock release member provided in the recording / reproducing apparatus is inserted into the cassette case and acts on the vertical portion of the reel lock member to move the reel lock member to the unlock position. Two types of tape cassettes, large and small, that are
It is characterized in that the lower ends of the vertical portions are located at different heights.

Therefore, in the present invention, since the single lock releasing member can be two-dimensionally moved to unlock the tape reels of the large and small tape cassettes, the mechanism becomes complicated. You can avoid things.

The specific shapes and structures of the respective parts shown in the above embodiments are merely examples of the embodiment in carrying out the present invention, and the technical scope of the present invention is thereby provided. It should not be construed as limiting.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an example of an embodiment of a recording / reproducing apparatus and a tape cassette of the present invention, showing a state in which a large tape cassette is mounted in a horizontal section of the large tape cassette.

FIG. 2 is a schematic plan view showing a state in which the small tape cassette is mounted in a horizontal cross section of the small tape cassette.

FIG. 3 is a schematic plan view showing a main part.

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

FIG. 5 is an enlarged cross-sectional view of a main part showing an unlocking operation when a large tape cassette is mounted.

FIG. 6 is an enlarged cross-sectional view of a main part showing the operation following FIG.

FIG. 7 is an enlarged cross-sectional view of a main part showing the operation following FIG.

FIG. 8 is an enlarged cross-sectional view of a main part showing a lock releasing operation when the small tape cassette is mounted.

FIG. 9 is an enlarged cross-sectional view of the main parts showing the operation following FIG.

FIG. 10 is a schematic plan view showing the mounted states of two large and small tape cassettes in an overlapping manner.

[Explanation of symbols]

 1 large tape cassette 2 cassette case 5 recording medium tape 6, 6'tape reel 8 reel lock member 12a vertical part 18 small tape cassette 19 cassette case 22 recording medium tape 23, 23 'tape reel 25 reel lock member 29a vertical part 35 recording Playback device 37 Chassis 61 Lock release member 62a Slope portion 62b Vertical portion 63a Slope portion 63b Vertical portion

Claims (4)

[Claims] 1. A tape reel having a recording medium tape wound therein is rotatably housed in a cassette case, and is movably reeled between a locked position for locking the tape reel and an unlocked position for releasing the lock. A lock member is provided, and a lock release member provided in the recording / reproducing apparatus is inserted into the cassette case to press the reel lock member so that the reel lock member is moved to the lock release position. A recording / reproducing apparatus capable of using different tape cassettes of different types, wherein the unlocking member is formed to be movable on a plane parallel to the chassis,
A recording / reproducing apparatus characterized in that the lock releasing member is moved to an insertion position corresponding to the mounted tape cassette. 2. The recording / reproducing apparatus according to claim 1, wherein the smaller tape cassette, that is, the small tape cassette, is mounted at a higher position than the larger tape cassette, that is, the large tape cassette. 3. The lock releasing member is formed with two slope portions and two vertical portions, one vertical portion for unlocking the small tape cassette and the other vertical portion for unlocking the large tape cassette. The recording / reproducing apparatus according to claim 2, wherein the recording / reproducing apparatus is used for. 4. A tape reel having a recording medium tape wound therein is rotatably housed in a cassette case, and is movably reeled between a locked position for locking the tape reel and an unlocked position for unlocking the tape reel. A lock member is provided, and a lock release member provided in the recording / reproducing apparatus is inserted into the cassette case and acts on the vertical portion of the reel lock member to move the reel lock member to the lock release position. A tape cassette, wherein the lower ends of the vertical portions are positioned at different heights when mounted on a recording / reproducing apparatus.