JPH05342718A - Cassette and magnetic recording and reproducing apparatus - Google Patents

Abstract

PURPOSE:To obtain a cassette and a magnetic recording and reproducing apparatus wherein the tape holding part of the cassette can be expanded and contracted, the apparatus can be made small-sized and the designing tolerance of a tape traveling system is increased. CONSTITUTION:The apparatus is constituted of the following: a cassette main-body part in which a tape feed reel 106 on which a magnetic tape 50 has been wound and a tape takeup reel 108 have been housed; tape holding parts 103, 104 which hold the magnetic tape 50 together with the reels 106, 108; and cassette movement parts 1-1, 120 which are installed at the tape holding parts and which can be moved to the front and rear direction of a cassette 100 as required. The cassette 100 is constituted in the following manner: the cassette movement part 101 is mounted on a magnetic recording and reproducing apparatus at a first position which has been moved in the front direction of the cassette 100; and a recording operation or a reproducing operation is performed in a second position in which the cassette movement part 101 has been moved to a direction opposite to the front direction of the cassette. In addition, the magnetic recording and reproducing apparatus is constituted in the following manner: tape-holding-part driving mechanisms 300, 400 are installed so as to be capable of driving the tape holding parts 103, 104; and, when the cassette 100 is in the state of said second position, tape guides 2 to 8 can be moved and arranged in positions where the tape holding part 103 existed in the first position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus for helically recording or reproducing a signal on a magnetic tape and a cassette for accommodating the magnetic tape.

[0002]

2. Description of the Related Art FIG. 24 and FIG.
It is a conventional magnetic recording / reproducing apparatus disclosed in Japanese Patent Publication No. 66252. In the figure, 10 is a deck base, 21 and 23 are shafts erected on the deck base 10, and 20 and 22 are shafts 21.
And 23 are respectively a tape supply side reel stand and a tape take-up side reel stand which are rotatably pivoted around 23 and 23, respectively, into which the tape supply reel 106 and the tape take-up reel 108 housed in the cassette 100 are inserted and engaged. It is configured to rotate. 1 is a tape guide drum, 561
~ 564 is a tape guide, 571 installed on ring 586
And 572 are shafts erected on deck base 10, 573 and 574
Is a lever rotatably supported by the shafts 571 and 572, 565 and 566 are tape guides erected on the levers 573 and 574, and 567 to 570 are tape guides erected on the deck base 10. The magnetic tape 50 pulled out from the cassette 100 by these tape guides is wound around a predetermined position of the tape guide drum 1.

Further, 575 is a tension pin which is supported by the deck base 10 so as to give a predetermined tension to the magnetic tape 50, 12 is a capstan fixed to the deck base 10, and 11 is the deck base. 10 is a pinch roller movably provided on the magnetic tape 50, and a predetermined tension is applied to the magnetic tape 50 by the tension pin 575, and the magnetic tape 50 is held between the capstan 12 and the pinch roller 11. It is configured to be transported on the tape guide drum 1 at a predetermined speed.

Further, 150 and 160 are the cassettes 100 described above.
Opening window portions 103 and 104 provided on the front side of the tape feeding portion 10 are tape holding portions provided on the opening window portion. As shown by the two-dot chain line in FIG.
The magnetic tape 50 is stretched from 6 to the tape take-up reel 108 via the tape holding portions 103 and 104. Tape guides 561 to 566 on the front of cassette 100
And the magnetic tape 50 stretched around the tape holding portions 103 and 104 so that the pinch roller 11 can enter the cassette.
The opening 105 is formed by the notch on the front side of 100. Further, 580 is a loading motor installed on the deck base 10, 521 is a shaft of the loading motor 580, 582 is a pulley fixed to the shaft 521, 583 is a worm supported on the deck base 10, and 584 is A belt suspended between the pulley 582 and the worm 583, 58
5 is also mounted on the deck base 10 and the above worm 58
3 is a gear meshingly engaged with 586
Is a ring provided with a gear part meshing with the outer periphery, and the driving force generated by the loading motor 580 causes the tape guides 561 to 566, the tension pin 575, and the tape guides 561 to 566 via the worm 583, the gear 585, and the ring 586.
The pinch roller 11 and the like are movable.

Next, the operation will be described. As shown by the chain double-dashed line in FIG. 24, when the cassette 100 is mounted in the magnetic recording / reproducing apparatus, the loading motor 580 is rotated,
This rotation is transmitted to the pulley 582, the belt 584, the worm 583, the gear 585, and the ring 586, and the levers 573 and 574 are driven in the directions of arrows A and B, respectively, by a mechanism (not shown) engaged with the ring 586, and the cassette Tape guides 565 and 566 located in the opening 105 of the 100 and mounted on this lever are magnetic tapes stored in the cassette 100.
Pull out 50. Similarly, as the ring 586 rotates, the tape guides 561 to 563 installed on the ring 586 located in the opening 105 of the cassette 100 sequentially pull out the magnetic tape 50, and the tension pin 575 applies tension to the magnetic tape 50. By sandwiching the magnetic tape 50 with the pinch roller 11 and the capstan 12, a tape path is formed by moving the magnetic tape 50 to a predetermined position around the tape guide drum 1 shown in FIG. It becomes a state. Although the tape guide 564 is not located in the opening 105 of the cassette 100 when the cassette 100 is mounted in the apparatus, it enters the opening 105 of the cassette 100 from below the magnetic tape 50 as the ring 586 rotates. Come and pull out the magnetic tape 50 as well as the tape guides 561 to 563.

[0006]

Since the conventional magnetic recording / reproducing apparatus and cassette are constructed as described above,
The size of the cassette does not change because the tape holding part does not move between the state in which the cassette is mounted on the magnetic recording / reproducing device and the state in which the magnetic tape runs and records or reproduces signals. Due to the interference between the mechanical parts of the device and the tape holding part, the device cannot be miniaturized when it is in use, and the tape path design is one of the important factors that determine the performance of the device. By designing to avoid interference between the holding portion and the tape guide and the like, there is a problem that the area in which the tape path can be configured is limited and the design margin is low.

The present invention has been made to solve the above-mentioned problems, and a magnetic recording / reproducing apparatus capable of reducing the size of the apparatus when recording or reproducing a signal on a magnetic tape is used. It is also an object of the present invention to provide a cassette and a magnetic recording / reproducing apparatus capable of increasing the design margin of the tape path which determines the performance as well as the size of the apparatus.

[0008]

According to a first aspect of the present invention, there is provided a cassette body in which a tape holding portion is provided with an opening portion through which a tape guide for pulling out the magnetic tape from the cassette is inserted. The front side of the magnetic recording / reproducing apparatus, the tape holding portion is moved to the front side of the cassette when the cassette is mounted on the magnetic recording / reproducing apparatus, and the tape holding portion for recording / reproducing signals on / from the magnetic tape. The tape holding portion is configured as a cassette moving portion so that the tape holding portion can move between the second position moved in the direction opposite to the front surface of the cassette.

According to a second aspect of the present invention, there is provided a magnetic recording / reproducing apparatus in which the tape guide is inserted into the opening of the cassette to pull out the magnetic tape and wind the tape at a predetermined position of the tape guide drum. And a tape holding unit drive mechanism for moving the cassette moving unit provided with the tape holding unit.

Further, according to a third aspect of the present invention, there is provided a magnetic recording / reproducing apparatus comprising a tape supply side reel stand for rotating and driving a tape supply reel and a tape take-up reel, a tape take-up side reel stand, and a tape guide drum. A moving mechanism for moving the cassette moving portion relative to each other and a tape holding portion driving mechanism for moving the cassette moving portion are provided, and when the tape guide pulls out the magnetic tape from the cassette and winds it around the tape guide drum, the moving mechanism moves the reel. The table and the tape guide drum are brought close to each other, and the cassette moving unit is moved to move the tape holding unit from the first position to the second position.

[0011]

In the first and second aspects of the present invention, since the cassette moving portion provided with the tape holding portion can be moved in the front-rear direction of the cassette, when the cassette is mounted on the magnetic recording / reproducing apparatus, The tape holder is moved to the front side of the cassette to the first position, and the magnetic tape is pulled out to the opening formed by the magnetic tape stretched around the tape holder and the front side of the cassette body. When the tape guide is allowed to enter and the magnetic tape is wound around the tape guide drum at a predetermined position to record or reproduce a signal on the magnetic tape, the tape holder is moved in the direction opposite to the front surface of the cassette. The tape guide is moved to the second position, where the tape holding portion is located at the first position, and the tape guide path constituting the tape traveling path can be arranged within the allocable range. It is intended to gel so.

Further, according to a third aspect of the present invention, at the first position where the tape holding portion of the cassette is moved toward the front surface of the cassette, the tape guide enters the opening and then the magnetic tape is pulled out. When the tape guide drum is wound at a predetermined position, the tape supply reel base and the tape take-up reel base are moved so that the tape guide drum is relatively close to each other to shrink the device, and the tape holding portion is provided on the front surface of the cassette. The cassette is contracted by moving the cassette in the opposite direction to the second position.

[0013]

【Example】

Example 1. FIG. 1 is a plan view of an essential part of a magnetic recording / reproducing apparatus showing an embodiment of the present invention. When the cassette 100 is mounted on the magnetic recording / reproducing apparatus, the tape holders 103 and 104 are moved toward the front of the cassette. Indicates one position. In the figure, 21 and 23 are shafts set up on the deck base 10, 20
And 22 are a tape supply side reel stand and a tape winding side reel stand which are rotatably supported by the shafts 21 and 23, respectively, which are engaged with the tape supply reel 106 and the tape take-up reel 108 housed in the cassette 100, It is configured to rotate. Reference numerals 101 and 102 denote cassette moving portions configured to be movable in the front-rear direction of the cassette 100, and 103 and 104 denote tape holding portions fixed to the cassette moving portions, which are stretched on the tape holding portions 103 and 104. An opening 105 is formed by the magnetic tape 50 and the front side of the cassette body 700.

2 to 8 are tape guides that movably support the deck base 10, and 11 is a deck base as well.
A pinch roller 1 supported by 10 is a tape guide drum 1 installed on the deck base 10. The tape guides 2 to 8 together with the pinch roller 11 are cassette 10
When 0 is mounted on the magnetic recording / reproducing apparatus, the opening 105
The magnetic tape 50 is pulled out from the cassette 100 and wound around a predetermined position of the tape guide drum 1 to form a tape running path. Numerals 38 and 48 are movably supported on the deck base 10, and are configured to engage and move the cassette moving portions 101 and 102 when needed.

FIG. 2 is a plan view of an essential part of a magnetic recording / reproducing apparatus showing an embodiment of the present invention. In the figure, 30 is a sliding plate, 32 is a rack portion provided on the side surface of the sliding plate 30, and 35 is a rack part.
And 36 are shafts erected on the deck base 10, 37 is a gear, and the gear 37 is supported by the shaft 36,
It meshes with the rack portion 32 of the sliding plate 30 guided by the shaft 35. Further, 38 is a pin that is erected on the sliding plate 30, and is configured to be engaged with the cassette moving unit 101 to move. 39 is a pin that is set up at one end of the sliding plate 30, 33 is a shaft that is set up at the deck base 10, 34 is a lever that is supported by this shaft 33, and 2 is fixed at one end of this lever 34. The tape 39 is a tape guide, and the pin 39 is provided so as to come into contact with the one end 34a of the lever 34 and rotate. The tape holding portion drive mechanism 300 is configured as described above. The tape holding portion drive mechanism 400 on the tape winding side is the same as the above mechanism 300, and a description thereof will be omitted.

3 to 8 are views of a cassette showing an embodiment of the present invention. In FIG. 3, 110 is an upper lid, 111 is a lower lid, 106 is a tape supply reel, 108 is a tape take-up reel, 112 is a sliding plate sandwiched and guided by the upper lid 110 and the lower lid 111, and 101 and 102. Is a cassette moving part provided on the sliding plate, and 103 and 104 are cassettes 100.
At the positions of the opening windows 150 and 160 on the front side of the tape holding section 119 provided on the cassette moving sections 101 and 102, 119 is supported by abutting on the sliding plate 112 and the lower lid 111. A leaf spring for urging the moving plate 112 toward the front side of the cassette 100 and a front lid 120 provided on the front side of the cassette 100 are formed so as to open and close the opening windows 150 and 160. Reference numeral 125 is a screw for fixing the upper lid 110 and the lower lid 111 together.
The cassette body 700 shown in FIG. 4 is configured by integrally fixing the lower lid 111 and the lower lid 111.

Reference numeral 113 is a convex portion provided on both sides of the sliding plate 112, 121 is a groove provided on both side surfaces of the front lid 120 for inserting and holding the convex portion 113, and 123 is a convex portion 113. Is a spring that is inserted into the front cover 120 and urges the front lid 120 to rotate around the convex portion 113. As shown in FIG. 8, the spring 123 is held by the convex portion 113 and is also hooked on the spring hooking portion 118 provided on the sliding plate 112 and the spring hooking portion 122 provided on the front cover 120. The front lid 120 is configured to be biased in the direction of arrow L.

Further, in FIG. 3, reference numeral 114 denotes a convex portion provided on the side surface of the sliding plate 112, and as shown in FIG.
It is sandwiched between 110 and the lower lid 111, and is configured to be movable in the front-back direction of the cassette 100. 140 and 141 are lock members provided on both side surfaces of the sliding plate 112, 142 and
143 is a lower lid that allows the lock members 140 and 141 to enter.
A cutout formed in 111 that locks 140 and 1
When the tape 41 enters, the tape holding portions 103 and 10
4 is configured to be retained in the first position.

As shown in FIGS. 6 and 7, 107
And 109 are concave portions provided on the tape supply reel 106 and the tape take-up reel 108, 115 is a convex portion provided on the sliding plate 112, and the sliding plate 112 is moved in the direction of arrow J by the leaf spring 119. Recessed in the tape supply reel 106 and the tape take-up reel 108 under the force of
By fitting this convex part 115 to 107 and 109,
It is configured to brake the tape supply reel 106 and the tape take-up reel 108.

FIG. 9 is a perspective view of a magnetic recording / reproducing apparatus showing an embodiment of the present invention. In the figure, 61 is a holding portion fixed to the deck base 10 with screws 63, and 64 is this holding portion.
A link whose one end is rotatably determined by a shaft 65 erected in 61, 66 is a link engaged with a shaft 68 rotatably relative to the link 64, and 67 is a link of the link 66. A shaft which is set up at one end and which guides the link 66 by being inserted into the long hole 62 provided in the holding portion 61, 69 is a case for holding the cassette 100, and 72 is set up in the case 69. A shaft that rotatably holds one end of the link 66 with respect to the case 69, 73 is a shaft that is erected at one end of the link 64,
70 is provided on both sides of the case 69, and is an elongated hole for guiding the shaft 73, 71 is fixed to the case 69, and the cassette 10
0 is a leaf spring that biases the tape supply side reel base 20 and the tape take-up reel base 22 in the direction of 74, and 74 is a spring that is suspended between the lever 66 and the holding portion 61 and biases the lever 66 in the direction of arrow T. , 75 are provided on both side surfaces of the case 69, and enter the notches 142, 143 of the cassette when necessary to lock the lock member 14
With the lock release member for releasing 0 and 141, the cassette housing 600 for mounting and fixing the cassette 100 on the magnetic recording / reproducing apparatus is configured as described above.

Next, the operation will be described. Cassette 100
When normally carried alone, as shown in Figure 6,
The cassette moving parts 101 and 102 are moved to the front side of the cassette, the tape holding parts 103 and 104 are in the first position, and the locking members 140 and 141 are the notches 14 of the lower lid 111.
Since the cassette moving parts 101 and 102 cannot move in the direction opposite to the front surface direction of the cassette due to the intrusion into the second and the second 143, the first position is maintained. In this first position, the tape supply reel 106 and the tape take-up reel 108 are provided with the recesses 107 and 10 respectively provided therein.
The convex portion 115 provided on the sliding plate 112 is fitted into the sliding member 9 to be braked.

When the cassette 100 in this state is mounted in the cassette housing 600 shown in FIG. 9, the lock release member 75 enters the notches 142 and 143 of the cassette, and the lock members 140 and 141 are cut into the notches 142. , 143, the sliding plate 112 is made movable in the front-rear direction of the cassette. Next, when the cassette is pushed down in the direction of arrow S shown in FIG. 9, the cassette as shown in FIG.
100 is moved in the direction of the arrow N and abuts on the front lid guide member 130 fixed to the deck base 10 so that the front lid is moved.
120 is overcome by the urging force of the spring 123 and is rotated in the direction of arrow M to be opened, and the tape guide 2 shown in FIG.
8 and the pinch roller 11 are fixed in a state of entering the opening 105.

Next, as shown in FIG. 11, the tape guides 4 and 5 in the opening 105 of the cassette pull out the magnetic tape 50 in the directions of arrows U and W, respectively, and then the tape guides 3, 6 and 7 shows arrow X,
The magnetic tape 50 is pulled out in the Y and Z directions. At this time, the gear 37 shown in FIG. 2 is rotated in the direction of arrow A,
When the sliding plate 30 is moved in the direction of arrow B, the pins 38 set up on the sliding plate 30 come into contact with the cassette moving portion 101 of the cassette 100 to move the cassette moving portion 101 in the direction of arrow C. The tape holding portion 103 is also moved in the direction of arrow C. When the sliding plate 30 is further moved in the direction of arrow B, the pin 39 contacts one end 34a of the lever 34, the lever 34 is rotated in the direction of arrow D, and the tape holding portion 103 is moved in the direction of arrow C. The tape guide 2 is moved to the empty position. The same applies to the tape holding portion 104, and the tape guide 8 is moved in the direction of the arrow H into the empty space where the tape holding portion 104 is moved, and the tape guides 2 and 8 are moved in the directions of the arrows D and H, respectively. The position of the magnetic tape 50 at the entrance / exit of the cassette 100 is determined by pulling out the tape 50. The second position of the tape holding portion of the cassette 100 is the state where the tape holding portions 103 and 104 have completed the movement in the C and G directions in the figure in this way.

Next, as shown in FIG. 10, the pinch roller 11 is brought into contact with the capstan 12 and holds the magnetic tape 50 to form a tape running path, and the magnetic tape mounted on the tape guide drum 1 is formed. A signal is recorded or reproduced by the head 1a. In FIG. 6, when the cassette moving parts 101 and 102 are moved, that is, when the sliding plate 112 is moved in the direction of arrow K,
The protrusion 115 is separated from the recesses 107 and 109 of the tape supply reel 106 and the tape take-up reel 108, and the tape supply reel 106 and the tape take-up reel 108 are in a freely rotatable state. Further, as shown in FIGS. 8b to 8c, when the cassette moving parts 101 and 102 are moved in the arrow P direction, the front lid 120 comes into contact with the upper lid 110 and is prevented from moving in the P direction in the drawings. It will keep the open condition as shown in. At this time, the convex portion provided on the sliding plate 112
113 moves the groove 121 formed in the front lid 120 in the direction of arrow Q. By the above operation, the tape path shown in FIG. 10 is formed.

In the above embodiment, the tape holding portion 103 of the cassette 100 is moved by the sliding plate 30, but it goes without saying that it may be moved by another mechanism. For example, FIG. 12 and FIG. 13 show another embodiment. In the figure, reference numeral 83 is a shaft that is erected on the deck base 10, reference numeral 84 is a brake lever that is rotatably supported by the shaft 83 and that brakes the tape supply side reel base 20, and is retained by a retaining ring 89.
Reference numeral 88 is a spring that is suspended by the brake lever 84 and a shaft 87 that is erected on the deck base 10, and biases one end 85 of the brake lever 84 so as to abut the tape supply side reel stand 20. 90 is the axis set up on the deck base, 91 is this axis
The abutment portion 93 that is pivotally supported by 90 and that abuts against the brake lever 84.
A control lever 38 is provided, a pin 38 is planted at one end of the control lever 91, a retaining ring 92 is provided, and the control lever 91 is retained by the retaining ring. 80 is deck base 10
The shaft is erected on the top, 81 is the cam supported on this shaft 80, 82
Is a groove provided in the cam 81, and 86 is a shaft that is erected in the control lever 91. By inserting the shaft 86 into the groove 82, the cam 81 and the control lever 91 are engaged, and Cam 81
Is configured to rotate the control lever 91, and the control lever 91 is configured to rotate the brake lever 84.

Next, the operation will be described. When the tape holding portion 103 shown in FIG. 12 is in the first position, it is not necessary to run the magnetic tape 50 for recording or reproduction, so that the control lever 91 and the brake lever 84 are separated from each other.
The brake lever 84 has a spring 88 for the tape supply side reel stand.
Abut on 20 and brake the tape supply side reel stand 20,
The magnetic tape 50 is prevented from being pulled out. In addition,
At this time, since the shaft 86 is positioned by the groove 82 of the cam 81, the control lever 91 is held at the position shown in FIG. 12, and the pin 38 is separated from the cassette moving portion 101.

Next, when the cam 81 is rotated in the direction of arrow A shown in FIG. 12, the shaft 86 is moved in the direction of arrow B by the side surface of the groove 82, and the contact portion 93 of the control lever 91 is braked. The brake lever 84 is brought into contact with the lever 84, the brake lever 84 is rotated in the direction of arrow C, and the magnetic tape 50 becomes ready to be pulled out from the tape supply reel base 20. And the control lever
When pin 91 is rotated in the direction of arrow B, pin 38
Comes into contact with the cassette moving unit 101, and the cassette moving unit 10
By moving 1 in the direction of arrow D, the braking of the tape supply reel is released and the magnetic tape 50 is ready to be pulled out, as described in the embodiment of FIG. Then, as shown in FIG. 13, the tape holding portion 103 is in a state of being in the second position in the vicinity of the tape supply side reel base 20.

As described above, in this embodiment, since the cassette moving unit 101 provided with the tape holding unit is moved toward the tape supply side reel stand 20, it is similar to the tape holding unit moving mechanism shown in FIG. Can be obtained, and the tape guide can be moved to the position where the tape holding portion 103 is located at the first position to form a tape traveling path. Further, according to this embodiment, when the tape holding portion 103 is in the first position, the tape supply reel base 20 is braked, and when the tape holding portion 103 is moved from the first position to the second position, Since the supply reel base 20 is freely rotatable and the tape supply reel 106 is also freely rotatable as described in the above embodiment, the magnetic tape 50 is not subjected to an excessive load from the cassette 100 and can be safely operated. Will be withdrawn.

Although the brake lever 84 for braking the tape supply side reel base 20 has been described in this embodiment, the same applies to the braking of the tape winding side reel base 22.

The cassette used in the above embodiment is not limited to the one shown in FIGS.
~ You may use the cassette as shown in FIG. That is, in the figure, 113 is a convex portion provided on both side surfaces of the upper lid 110, and 121 is a convex portion provided on both side surfaces of the front lid 120.
A groove 123 for inserting and holding is a spring which is inserted into the convex portion 113 and biases the front lid 120 to rotate around the convex portion 113. As shown in FIG. 15, the spring 123 is held by the convex portion 113 and is also hooked on a spring hooking portion 118 provided on the upper lid 110 and a spring hooking portion 122 provided on the front lid 120 to 120 is configured to be biased in the direction of arrow R.

Next, the cassette 100 shown in FIGS.
The operation in the case of using will be described according to the embodiment of FIG. The cassette 100 is attached to the magnetic recording / reproducing apparatus at the first position, and at this time, the front cover guide member 130 engages with the front cover 120 to open the front cover 120 as shown in FIG. 15b. Next, the sliding plate 40 moves in the direction of arrow S, and the cassette moving unit 102 is moved in the direction of arrow S by this sliding plate 40. Therefore, the cassette moving unit 102 moves while the front cover 120 is maintained in the open state by the front cover guide member 130,
The second position shown in Figure 15c is reached. Thus, even if the cassette shown in FIGS. 14 to 15 is used, the same operation as that of the cassette shown in FIGS. 3 to 8 can be obtained.

Example 2. 16 to 19 are a plan view and a side view of an essential part showing an embodiment of the present invention. In FIG. 18, reference numeral 106 is a tape supply reel, and 108 is a tape take-up reel, which is accommodated in parallel with the cassette 100.
Reference numerals 103 and 104 denote tape holders, and the magnetic tape 50 ejected from the tape supply reel 106 is the tape holder 103.
Then, the tape is returned to the tape take-up reel 108 via the tape holding portion 104, and the tape holding portions 103 and 104 and the front side of the cassette body 700 form an opening 105. In addition, in the opening 105, the tape guide 4,
5, 7, 17, and 18, a tension pin 13, and a pinch roller 11 are arranged. On the deck base 10, the tape guides 4, 5, 7, 17, 18 in the tape running state, the tape guides 15 and 16 forming the tape running path together with the tension pin 13 and the pinch roller 11, the tape guide drum 1, Capstan 12 is installed.

16 and 17, reference numeral 200 denotes a sub-base, 201 denotes an elongated hole provided in the sub-base 201, and the elongated hole 201 provided in the sub-base 200 has:
The axis 208 that has been planted in the deck base 10 is inserted,
It serves as a guide when moving the sub-base 200. Numerals 21 and 23 are shafts erected on the sub base 200, and are configured to rotatably and rotatably support the tape supply side reel stand 20 and the tape take-up reel stand 22. 206 and 207
Is a cassette locking member installed on the deck base 10,
It is installed so as to determine the position of the tape holding portion 103 in the second position. 202 is a shaft that is erected on the deck base 10, 203 is a shaft that is erected on the sub base 200, and 204 is a drive lever of the sub base 200 having an elongated hole 205.
The drive lever 204 is pivotally supported by the shaft 202, and
By inserting the shaft 203 into the shaft 5, the shaft is engaged with the sub-base 200 to form a moving mechanism 250 of the sub-base 200.

Next, the operation will be described. In FIG. 16, when the cassette 100 is mounted at the position indicated by the chain double-dashed line in the drawing, the tape supply reel stand 20 is inserted into the tape supply reel 106, and the tape take-up reel stand 22 is inserted into the tape take-up reel 108. Then, the sub base 200 and the cassette 100 are integrated. Next, when the lever 204 is rotated in the direction of arrow A, the shaft 203 inserted in the slot 205 on the lever 204 is moved in the direction of arrow A. At this time, the sub base 200 is guided by the shaft 208 erected on the deck base 10, so that the sub base 200 is linearly moved in the direction of the arrow B.

Then, the cassette 100 is the sub base 20.
Since it is integrated with 0, it moves in the same manner, and the cassette moving parts 101 and 102 come into contact with the cassette locking members 206 and 207 installed on the deck base 10. When the sub-base 200 is further moved, the cassette 100 moves to the tape guide drum 1 side while the cassette moving parts 101 and 102 maintain a constant position in contact with the cassette locking members 206 and 207. The cassette 100 changes from the state of the first position shown in FIG. 18 to the state of the second position shown in FIG.

With such a structure, the cassette 100 at the second position comes close to the tape guide drum 1, and the miniaturization is achieved at the time of recording / reproducing. Although omitted in the description of the embodiment shown in FIGS. 16 to 19, in the process of moving from the first position shown in FIG. 18 to the second position shown in FIG.
It goes without saying that the braking of the tape supply reel 106, the tape take-up reel stand 22 or the tape take-up reel 108 is released.

In the above embodiment, the reel stand is arranged so as to be close to the tape guide drum 1, but FIG.
0, the tape guide drum 1 may be close to each other in the direction of the reel stand, or both the reel stand and the tape guide drum 1 may be close to each other. The tape holding portions 103 and 104 may be changed from the first position to the second position as the tape holding portions 103 and 104 move closer to the guide drum 1.

Example 3. An embodiment in which the tape guide drum 1 is close to the reel stand will be described. In FIG. 20,
210 is a drum base, and the tape guide drum 1 is installed on this drum base 210. 213 is an elongated hole provided in the drum base 210, 216 is a deck base 10
The shaft 216 is erected on the upper side, and the shaft 216 is inserted into the elongated hole 213 to serve as a guide for the movement of the drum base 210. Further, 214 is a rack provided at one end of the drum base 210, 217 is a shaft erected on the deck base 10, 218 is a gear supported by the shaft 217, and the gear 218 and the rack 214 are They mesh with each other to form the swing mechanism 250. 211 and 212 are stoppers provided on the drum base 210 for positioning the tape guides. 219 is a cassette moving unit 101 or 102
215 is a shaft erected on the drum base 210, 38 and 48 are pins erected on both ends of the plate 219, and the shaft 215 is inserted into the holes provided on the plate 219. By doing so, the drum base 210 and the plate 219 are integrally engaged.

Next, the operation will be described. In FIG. 20, when the cassette 100 is mounted at the position shown by the chain double-dashed line in the figure, the gear 218 is rotated in the direction of arrow A, and the rack 214 meshing with the gear 218 is driven in the direction of arrow B. Then, the drum base 210 is driven in the direction of arrow B. Then, the plate 219 engaged with the drum base 210 is moved in the direction of arrow C, the shafts 38 and 48 are brought into contact with the cassette moving portions 101 and 102, respectively, and moved in the direction of arrow D, and thus the tape holding portion. 103 and 104 are moved in the direction of arrow D.

Although the tape guide stoppers 211 and 212 are provided on the drum base 210 in this embodiment, the stoppers 211 and 212 may be formed on the deck base 10 instead of on the drum base 210.

Further, the above-mentioned embodiment shown in FIG. 3 to FIG. 8 or FIG.
In the cassettes of FIGS. 4 to 15, the tape holding portions 103 and 10
4 is provided on the sliding plate 112 that is integrated with both the tape supply side and the tape winding side.
The tape holding portion drive mechanism for moving 1 and 102 may be provided only on one of the tape supply side and the tape winding side. Further, the tape holding portions 103 and 104 on the tape supply side and the tape winding side may be independently movable. Further, as shown in FIG.
The tape holding portion 103 may be arranged so as to be a part of the tape guide of the tape traveling path.

Although the tape holding portions 103 and 104 move linearly in the above embodiment, they may be rotated.

In addition, in the third embodiment, as shown in FIG.
A cassette as shown in FIG. 23 may be used. Figure 2
In FIG. 3, 102 is a cassette moving part slidably supported on the cassette body 700, and 113 is this cassette moving part.
A convex portion 120 is provided on the front lid 102, and the convex portion 113 is engaged with the groove portions 121 formed on both side surfaces of the front lid 120. twenty one
9 is a slide plate slidably supported on the deck base 10, 130 is a front lid guide member erected on the slide plate 219,
Similarly, 48 is a pin that is erected on the sliding plate 96. By the way, the cassette moving unit 102 comes into contact with the pin 48,
Positioning is done.

Next, the cassette shown in FIGS. 22 and 23.
The operation when 100 is used will be described with reference to the embodiment of FIG. The cassette 100 is mounted in the magnetic recording / reproducing apparatus at the first position, and at this time, the front cover guide member 130 is attached to the front cover 120.
23b to open the front lid 120 as shown in FIG. 23b. Next, when the sliding plate 219 starts moving in the direction of arrow X, the pin 48 causes the cassette moving unit 102 to start moving in the direction of arrow X, and the pin 48 causes the cassette moving unit 102 to move.
102 moves in the direction of arrow X. Here, the front lid guide member
Since 130 is also provided on the sliding plate 219, the cassette moving unit 102, the front lid 120, and the front lid guide member 130 can hold the state shown in FIG. 23b and reach the second position shown in FIG. 23c. become. Thus, when the cassette shown in FIGS. 22 and 23 is used, when the tape guide drum 1 moves in the direction of the cassette body 700, the front lid 120 also moves in the opposite direction to the tape guide drum 1, so that the tape The possibility that the guide drum 1 and the front cover 120 interfere with each other is small, and the effect of reducing the size of the magnetic recording / reproducing apparatus at the time of recording or reproducing is great.

Although the above description has been given with reference to the third embodiment shown in FIG. 20, also in the second embodiment shown in FIG. 16, the front lid guide member 130 is fixed to the deck base 10, and the cassette body 700 is fixed.
By moving the tape toward the tape guide drum 1,
The cassette 100 shown in FIGS. 22 to 23 can be used, and the same operation as that described in the third embodiment can be obtained. Further, also in the first embodiment of FIG. 2, by fixing the front lid guide member 130 to the sliding plates 30 and 40, the cassette 100 shown in FIGS. 22 to 23 can be used. In addition to the effect shown in 1, the tape guide drum 1 and the tape guide 2 or 8 and the cassette
The action of reducing the risk of interference with the front lid 120 of 100 is also increased.

[0046]

As described above, according to the first and second aspects of the present invention, the tape holding portion of the cassette is configured to be movable, and the magnetic recording / reproducing apparatus is provided with a mechanism for moving the tape holding portion. Since it is provided, the tape guide can be arranged at the position where the tape holding portion forming a part of the cassette was present when the cassette was mounted on the device, and therefore when the signal was recorded on or reproduced from the magnetic tape, the device could be installed. It has the effect of reducing the size and increasing the design latitude of the tape running path.

According to a third aspect of the present invention, when the magnetic tape is pulled out from the cassette, a mechanism is provided for bringing the tape supply side reel stand and the tape winding side reel stand relatively close to the tape guide drum. When the reel stand and the tape guide drum come close to each other, the tape holding portion of the cassette is contracted, so that there is an effect that the apparatus can be further downsized.

[Brief description of drawings]

FIG. 1 is a main part plan view showing a cassette and a magnetic recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a plan view of relevant parts showing a magnetic recording / reproducing apparatus having a mechanism for moving the tape holding portion of the cassette according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a cassette according to Embodiment 1 of the present invention.

FIG. 4 is a perspective view showing the main body of the cassette according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of essential parts showing a cassette according to Embodiment 1 of the present invention.

FIG. 6 is a main part plan view showing the cassette according to the first embodiment of the present invention.

FIG. 7 is a cross-sectional view of essential parts showing a cassette according to Embodiment 1 of the present invention.

FIG. 8 is a side view of essential parts showing the cassette and the magnetic recording / reproducing apparatus according to the first embodiment of the present invention.

FIG. 9 is a perspective view showing a magnetic recording / reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 10 is a main part plan view showing the cassette and the magnetic recording / reproducing apparatus according to the first embodiment of the present invention.

FIG. 11 is a main part plan view showing the cassette and the magnetic recording / reproducing apparatus according to the first embodiment of the present invention.

FIG. 12 is a main part plan view showing the cassette and the magnetic recording / reproducing apparatus according to the first embodiment of the present invention.

FIG. 13 is a main part plan view showing the cassette and the magnetic recording / reproducing apparatus according to the first embodiment of the present invention.

FIG. 14 is a perspective view showing a cassette according to the first embodiment of the present invention.

FIG. 15 is a side view of essential parts showing a cassette and a magnetic recording / reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 16 is a plan view of relevant parts showing a cassette and a magnetic recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 17 is a side view of essential parts showing a cassette and a magnetic recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 18 is a plan view of relevant parts showing a cassette and a magnetic recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 19 is a main part plan view showing a cassette and a magnetic recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 20 is a plan view of relevant parts showing a cassette and a magnetic recording / reproducing apparatus according to a third embodiment of the present invention.

FIG. 21 is a plan view of relevant parts showing a cassette and a magnetic recording / reproducing apparatus according to a second or third embodiment of the present invention.

FIG. 22 is a perspective view showing a cassette according to another embodiment of the present invention.

FIG. 23 is a side view of essential parts showing a cassette and a magnetic recording / reproducing apparatus according to another embodiment of the present invention.

FIG. 24 is a main-portion plan view showing a conventional cassette and magnetic recording / reproducing apparatus.

FIG. 25 is a main-portion plan view showing a conventional cassette and magnetic recording / reproducing apparatus.

[Explanation of symbols]

 1 tape guide drum 2 tape guide 3 tape guide 4 tape guide 5 tape guide 6 tape guide 7 tape guide 8 tape guide 10 deck base 13 tension pin 14 tape guide 15 tape guide 16 tape guide 17 tape guide 18 tape guide 20 tape supply side Reel stand 22 Tape take-up reel stand 50 Magnetic tape 100 Cassette 101 Cassette moving part 102 Cassette moving part 103 Cassette tape holding part 104 Cassette tape holding part 105 Cassette opening 106 Tape supply reel 108 Tape take-up reel 120 Previous Lid 150 Opening window 160 Opening window 250 Moving mechanism 300 Tape holding part drive mechanism 400 Tape holding part drive mechanism 700 Cassette body

Claims (3)

[Claims] 1. An opening window portion for accommodating a tape supply reel and a tape winding reel around which a magnetic tape is wound, a front lid for opening and closing the opening window portion, and the opening window portion. In a cassette having a tape holding portion provided in the tape cassette, a cassette body that accommodates the tape supply reel and the tape take-up reel, and a tape holder that is provided with the tape holding portion and is movable in the front-back direction of the cassette when necessary. And the cassette moving section moves toward the front surface of the cassette, and the tape holding section and the cassette body section are separated from each other at a first position, and the cassette moving section is attached to the magnetic recording / reproducing apparatus. Recording or reproduction is performed at a second position in which the tape holder moves in the direction opposite to the front direction and the tape holder moves in the direction of the cassette body. Cassette that. 2. A tape guide drum having a magnetic head mounted thereon, wherein the cassette according to claim 1 is mounted, and the magnetic tape stored in the cassette is pulled out and wound at a predetermined position on the tape guide drum. A magnetic recording / reproducing apparatus for rotating and recording or reproducing a signal, comprising a deck base for holding the tape guide drum, a tape guide movably supported on the deck base, and a support supported on the deck base. A tape holding portion drive mechanism for engaging and moving the cassette moving portion described in claim 1, wherein the tape guide is in the first position. The magnetic tape is pulled out from the cassette and wound around a predetermined position of the tape guide drum, and the tape holding portion drive mechanism moves the cassette moving portion. A magnetic recording / reproducing apparatus characterized in that the tape holding section is moved to a second position. 3. A tape supply reel stand and a tape take-up reel stand, which are engaged with the tape supply reel and the tape take-up reel according to claim 1, and are rotatably driven, and the reel stand. 2. A moving mechanism for moving the reel base or the tape guide drum in a direction in which the reel guide or the tape guide drum is relatively moved toward or away from the tape guide drum.
And a tape holding portion drive mechanism for engaging the cassette moving portion of the cassette at any time and moving the cassette moving portion, and holding the tape as the reel base and the tape guide drum come close to each other. 3. The magnetic recording / reproducing apparatus according to claim 2, wherein a part driving mechanism moves the cassette moving part to move the tape holding part from the first position to the second position.