JPS58212681A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To lock precisely guide rolls to unload a tape from a small-sized tape cassette charged in a case body having the same size as a standard size tape cassette, by locking the guide roll by a locking member pivotally mounted on the body. CONSTITUTION:A tape is unloaded from the small-sized tape cassette charged in a case body (not shown in figure) having the same size as the standard size tape cassette by unloading arm means. A pair of unloading arm means are arranged on each side of the take-up reel and supply reel sides. A lever pushes the locking member 32 pivotally mounted on the base plate 6 of the case body through a cam plate 41, a plate spring 40 and a slide arm 39 and holds the shaft of a guide roll 12 pivotally mounted on the leading end of the unloading arm (not shown in figure) together with a locking part 35. The same structure is prepared on the take-up reel side. Consequently, the guide rolls are supported rigidly and the tape can be travelled stably.

Description

Detailed Description of the Invention The present invention provides a tape cassette (hereinafter referred to as a second cheap cassette) which is a conventional tape cassette (hereinafter referred to as a first tape cassette) with a smaller external shape by narrowing the distance between the reels. ) relates to a cassette adder-free for use in equipment in which the first tape cassette is used.

Compared to compact audio tape cassettes, tape cassettes used in video tape recorders, etc., have a much thicker external shape due to standards such as tape width and distance between reels. However, since the tape cassette is large, there is a limit to miniaturization, which is a major problem.

Furthermore, with the current technology, it is difficult to make small tape sets with narrow tape widths due to image quality problems.

For this reason, as a means of downsizing tape cassettes and equipment, the cape width is the same as that of the conventional first chief cassent, and the distance between the reels is approximately 1/1/1 of that of the first chief cassent. 2, and the amount of tape is about 1/4 to 1/6 of the full-sized first chief cassette.

With such a small second tape cassette, it is possible to obtain the same image quality as the current first tape cassette, and not only can the chief cassette itself be made smaller, but also
Although it is possible to downsize the equipment that uses the tape cassette, it goes without saying that since the amount of tape is reduced, the recording time is shorter than that of the current first tape cassette. When considering recording time and miniaturization, it is desirable to change the tape cassette used depending on the application, etc., so that the smaller second chief cassette is compatible with the first chief cassette. In other words, it is required that the first tape cassette can be used in equipment that uses the first tape cassette l-, and a cassette adapter that satisfies this requirement becomes necessary.

In such a cassette adapter, the present invention makes it possible to smoothly pull out and store the magnetic tape from the second tape cassette by ensuring that the guide roller that guides the running of the magnetic tape is securely fixed. It is intended for the purpose of making money.

Hereinafter, an embodiment of the cassette adapter of the present invention will be explained using the drawings of FIGS. 1 to 7.

In the figure, 1 is a second tape cassette, and this second tape cassette 1 rotatably supports and stores reels 4 and 5 wound up with magnetic tape 3 in a half case 2, and also has a front surface. It is constructed by forming a predetermined running path such that the magnetic tape 3 is exposed to the outside on the side. This second tape cassette 1
In this case, the reel 4 on one side of the reel can be operated from the bottom side of the half case 2 through the entire window provided at the bottom of the half case 2, and the tip of the reel stand of the device fits into the hollow part inside. It is rotatably supported by a reel shaft (not shown) implanted in the glue half case 2 on the pick-up side of the trench, and a gear part 5a is formed on the outer periphery. - It is rotated by a gear on the drive source side that meshes with the gear portion 6a through a window on the side surface of the case 2.

6 is the main body case of the adapter, and this main case 6
has the same external dimensions as the first tape cassette, and the second tape cassette 1 is loaded into this main body case 6. In this main body case 6, a reel gear 7 that can be attached to the tip of one of the reel stands is rotatably supported and disposed at a position corresponding to the reel stand of the video tape recorder, and a reel gear 7 that can be attached to the tip of one of the reel stands is rotatably supported. A window (not shown) is provided at the tip to allow the reel 4 of the second tape cassette 1 to be attached. One gear of the reel gear 7KIr128 is engaged, and the gear portion 6a of the reel 6 of the second tape cassette 1 is engaged with the other gear of the idler gear 8, and the rotation of the reel gear 7 causes the second tape cassette 1 to The reel 6 rotates to run the magnetic tape 3.

In this main body case 6, a pick-up side pull-out arm 9 in the shape of a fishing needle is arranged so as to move from I to JI around an axis 9ai, and at one end of the pick-up side pull-out arm 9, a A guide roller 10 is attached for hooking the magnetic tape 3 of the second tape cassette 1 and pulling it out to a predetermined position. This guide roller 10 is rotatable around a shaft 10ai.In addition, at a position facing the pickup arm 9 of the main body case 6, a supply arm 11 is attached to a shaft 11a.
The magnetic tape 3 of the second tape cassette 1 is hooked onto one end of the supply side drawer arm 11, similarly to the pick-up side drawer arm 9, and is rotated around the center. A guide roller 12 is attached which is rotatable around a shaft 12a for pulling out to the position shown in FIG. At the other end of this supply side drawer arm 11, there is a knob 11.
b is provided, and the knob 11b is fitted into a long hole i3b of a dog-shaped connecting arm 13 arranged to rotate around the shaft 13a. Additionally, a Kid knob 13c is provided at the other end of this connecting arm 13, and the knob 1
3 cU, and is fitted into the elongated hole 14b of the connecting arm 14, which is arranged to rotate about the axis 14a'z. The other end of the connecting arm 14 engages with a knob 9b provided at the other end of the pick-up side pull-out arm 9. Reference numeral 15 denotes a drive rack in which a pinion gear 16 that is rotated manually or by a drive source such as a motor meshes with the drive rack.
The knob 9 of the pull-out arm 9 on the take-up side is located on the lower surface of the
There is provided a cam groove 15a into which the cam groove 15a is fitted. The cam groove 15a of the drive rack 15 has a part that is parallel to the moving direction of the drive rack 15 and a part that is inclined.As shown in FIG. 15a, the tick-up side pull-out arm 9 and the supply-side pull-out arm 11 extend outward and are in the tape guide position of the first tape cassette, and as shown in FIG. When the knob 9b of the up-side pull-out arm 90 is in the sloping part of the cam groove 16a, it is take-off.

The side drawer boom 9 and the supply side drawer boom 11 move inward and are in a state before the heel tape is pulled out.

A cam surface 15C having a groove 15b is provided on the upper surface of the drive rack 16, and the tip 17b of the arm 17, which is rotatable about a shaft 17a, comes into contact with the cam surface 15C, so that the drive rack 16 is in a predetermined position. Arm 1 is moved when the position is changed.
The tip 17b of the arm 17 fits into the groove 15b, thereby causing the arm 17 to rotate around the shaft 17a.The tip 17b of the arm 17 has an L-shaped connecting angle 18 that can freely rotate around the shaft 18ai. One end of the two is connected via a connecting arm 19, and displacement of the arm 1 is transmitted to the connecting angle 18. Further, a knob 21a of a guard panel opening/closing rod 21 that slides in the width direction of the main body case 6 while being guided by guide shafts 20a and 20b is fitted into the elongated hole 18b at the other end of the connecting angle 18. That is, the tip 17b of the arm 17 fits into the groove 15b of the cam surface 15c of the drive rack 15, so that the guard panel opening/closing rod 21 slides toward the rear side of the main case 6.
Further, when the tip 17b of the arm 17 is not fitted into the groove 15b, the guard panel opening/closing rod 21 is sliding toward the front side of the main body case 6.

Reference numeral 22 denotes a guard panel that is openable and closable at the front opening of the main body case 6 of the adapter, and shafts 22 a and 22 b at both ends of this guard panel 22 are bearings provided on the side plates of the main body case 6. Hole 23a.

, 23b, and is rotatably supported.

Of the bearing holes 23&, 23b that rotatably support the shafts 22a and 22bi of this guard panel 22, the bearing hole 23a
is a long hole, and the shaft 22a of the guard panel 22 is the bearing hole 2.
Inside 3a, the guard panel 22 is movable in the direction of protruding toward the front side.

Further, the other end of a spring 25, one end of which is engaged with the protrusion 24 of the main body case 6, is engaged with the shaft 21a of the guard panel 22, and the spring 25 engages the guard panel 2.
2 is attracted to the inside of the main body case 6. moreover,
The tip of the guard panel opening/closing rod 21 is in contact with the shaft 22a of the guard panel 22.

Reference numeral 26 denotes a locking member on the pick-up side that is rotatably supported by a shaft 27, and this locking member 26 has two locking pawls 26a that can be rotated separately around the shaft 27;
26b, and its two lock claws 26a, 2
6b has a cutout groove 28a of the lock portion 28 of the main body case 6, so that the guide roller 1 on the pickup side
Notch grooves 29a and 29b are provided to sandwich the shaft 10a of the 0. This locking member 26 is constantly urged in a direction away from the locking portion 28 of the main body case 6 by a spring 26C whose one end is locked to the protrusion 30. The protrusion 21b of the guard panel opening/closing rod 21 is attached to the plate spring 31 at the rear end of the locking member 260, the locking claws 26a, 26b.
When the guard panel opening/closing rod 21 slides toward the rear side of the main body case 6, the lock claw 26a is engaged with the lock claw 26a.

The rear end of 2eb is pushed by the protrusion 21b, whereby the locking claws 26a and 26b rotate around the shaft 27, and the locking portion 28 and the shaft 10 of the guide roller 10 are rotated.
a f to hold. Also, the spring 26 is used to return to the original position.
It is done by c.

32 is a locking member on the supply side, and this locking member 32 is composed of two locking claws 34a and a4b that can be rotated separately around shafts 33a and 33bi. is the main body case 6
Notch grooves sea and 3eb are provided for holding the shaft 12a'jz of the guide roller 12 on the Saglai side by the notch groove 35a of the locking portion 36. This lock claw 34a
, 34b are constantly urged by a spring 37 in a direction away from the lock portion 36 of the main body case 6. The tip of a slide arm 39 that is guided by the guide plate 3 and slides in the width direction of the main case 6 is in contact with the rear end of the lock claws 34a, 34b, and the slide arm 39 allows the lock claws 34a, 34b to be locked. The locking claws 34a and 34b lock onto the shaft 33 by pushing the rear end.
a, 33bi, and strongly supports the shaft 12a of the guide row 2m12 together with the lock portion 36.

Further, a leaf spring 40 is attached to the rear end of the slide arm 39.
is attached to the plate spring 40, and a cam plate 41 rotatably attached to the shaft 13a of the connecting arm 13 is in contact with the leaf spring 40. The cam plate 41 comes into contact with the tip of the operating arm 16d provided on the drive rack 16, and by pushing the cam plate 41 with the operating arm 1sd and rotating the cam plate 41, the cam plate 41 moves through the leaf spring 40. The slide arm 39 is pushed, and the slide arm 39 slides toward the front side of the main body case 6.

42 is a planetary gear device, and this planetary gear device 42 is
A shaft 44a attached to the gear frame 43.

44b, gears 46 and 46'lf that mesh with each other are rotatably supported.

A ratchet gear 47 is rotatably supported on the shaft 44a and meshes with a gear 16b that rotates around the shaft 16a'i together with the pinion gear 16. Only rotation in one direction is transmitted. Further, the shaft 44b is rotatably supported by a gear 48 which is connected to the gear 46 through a friction transmission member such as felt, and when the torque is below a certain level, the gear 48 is rotatably supported. Only the rotation of the gear 46 is transmitted. Furthermore, the planet gear -'d [2 is the shaft 44
& It is rotatable around the metal center, and the protruding piece 4 of the gear frame 43
3a'i The gear 48 meshes with one gear of the reel gear 7 by pushing the connecting angle 18 and rotating the planetary gear device 42 about the shaft 44ai. This planetary gear device 42 rotates the reel gear 7 during tape storage operation.
'f! : This is for winding up the magnetic tape 3 that has been rotated and drawn out onto the reel 5.

In such a configuration, when the drive rack 16 starts to move rightward from the state shown in FIG. Since the knob 9b is positioned, the take-up side pull-out arm 9 does not rotate.

Since the arm 17 is located in the groove 15b of the arm surface 15C, the arm 17 rotates the connecting angle 18, which causes the guard panel opening/closing rod 21 to slide toward the front side of the main body case 6 and push the shaft 22a of the guard panel 22. Therefore, the guard panel 22 resists the tensile force of the spring 25, rotates around the entire center, and opens. At this time, the connecting angle 18 pushes the protrusion 43 a f of the gear frame 43 of the planetary gear device @42, so the gear 48 of the planetary gear device 42 meshes with the reel gear 7.

Also, at this time, the guard panel opening/closing rod 21 slides toward the front side of the main body case 6, and the drive rack 15
When the operation arm 15d and the cam plate 41 are disengaged and the slide arm 39 slides toward the rear side of the main body case 6, the guard panel opening/closing rod 21 and the slide arm 39 are attached to the locking members 2e, s2. The bias is released, and the locked state of the guide rollers 10.12 is released.

Then, when the drive rack 16 further moves to the right and the knob 9b of the pick-up side pull-out arm 9 comes to the part inclined with respect to the moving direction of the cam groove 15a, the pick-up side pull-out arm 9 moves inward. Rotate. by this,
The connecting arm 14 engaged with the knob 9b also has a shaft 14ai.
The connecting arm 13, which rotates around the center of the coast and is connected to the connecting arm 14, also rotates around the axis 13ai. ll'1llffl 64. Wow, 4, 2. 1. Rotate inward.

When the pick-up side pull-out arm 9 and the sagurai-side pull-out arm 11 rotate inward in this way, the reel 5 is rotated by the reel gear 7, so that the pick-up side pull-out arm 9 and the sagrai side pull-out arm 1114'' (the pull-out arm 11 The magnetic tape 3, which had been pulled out of the half case 2, is now housed inside the half case 2.As shown in FIG. By doing so, the second tape cassette 1 can be taken out from inside the adapter.

Furthermore, when pulling out the tape, by moving the drive rack 16 to the left from the state shown in FIG. 3, the clamping operation of the shafts 10a and 12a of the guide roller 10.12 by the lock member 26.32, and the sound of the opening operation of the guard panel 22 can be performed as a series of operations.

Here, in the present invention, the shaft 10a of the guide roller 10.12, By holding 12a,
The guide rollers 10 and 12 are fixed at the tape guide position of the first tape cassette y), and the pick-up side pull-out arm 9 and the sagray side pull-out arm 1
Guide rollers 10 and 12f moving together with 1:
Since the shafts 10a and 12a are pressed against the locking parts 28 and 35 of the main body case 6 in a manner that the locking members 26 and 32 embrace them, even if there are variations in the amount of movement of the pick-up side pullout arm 9 and the supply side pullout arm 11, Guide rollers 10, 12; ii can be fixed at predetermined tape guide positions.

As described above, according to the cassette adapter of the present invention, the guide roller for guiding the running of the magnetic tape can be reliably fixed at a predetermined tape guide position, and the guide roller is not fixed at a predetermined tape guide position. Since the structure is such that the shaft of the guide roller is held between the lock part of the main body case and the lock member rotates, there is no possibility of rattling (the guide roller must be firmly fixed). This is possible.

[Brief explanation of drawings]

FIG. 1 is a plan view of the cassette adapter according to two embodiments of the present invention showing the state when the tape is pulled out, FIG. 2 is a plan view showing the state of the cassette adapter when the tape is stored, and FIGS. FIG. 4 is a perspective view showing the main structure of the cassette adapter. 1...Second tape cassette, 2...
C 7 cases, 3...a-f-7", 4,
es...Reel, 6...Body case,
7...Reel gear, 8...Idler gear, 9...Tick-up side pull-out arm, 10°12...Guide roller, 10a, 12a・river・
・Shaft, 11... Subsea side drawer arm, 13,
14... Connection arm, 16... Drive rack, 26, 32... Lock member, 28, 35
...Rock club.

Claims (1)

[Claims] a main body case that houses a second tape cassette having a shorter reel-to-reel distance than the first tape cassette and has the same dimensions as the first tape cassette; a tape drawer/accommodating means that performs a pull-out operation for pulling out a magnetic tape from a tape cassette to a tape guide position of a first tape cassette and a storage operation for accommodating the magnetic tape in a second tape cassette; a reel driving means for driving the reel of a second tape cassette housed in the case, and a guide roller that is moved by the tape drawer housing means to guide the running of the magnetic tape is moved to a tape guide position of the first tape cassette. A locking member is provided, and the locking member is rotatably disposed on the main body case and clamps the shaft of the guide roller with a lock portion provided on the main body case. cassette adapter