JPS58212668A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To prevent a tape from damage due to malfunction by opening/closing a guard panel while interlocking the opening/closing with the operation to unload/load a tape from/to a msall-sized tape cassette putting in a case body having the same size as a standard size tape cassette. CONSTITUTION:The small-sized tape cassette is put in the case body having the same size as the standard size tape cassette. If a driving rack 15 is moved from the shown position to the left, drawing arms 9, 11 on the winding and feeding sides respectively are opened outside and guide rolls 10, 12 draw the tape 3 from the cassette and load the tape to a recording and reproducing position. Simultaneously, an L-shaped lever 17 is turned in the counterclockwise direction, pushes a rod 19 against a spring 23 and the leading end of the rod 19 pushes the shaft 20a of a guard panel 20 to move the guard panel 20 from the position shown by a dot line to the position shown by a solid line. Thus, it is inhibited to draw the tape when the guard panel 20 is closed and the tape is prevented from damages due to malfunction.

Description

Detailed Description of the Invention The present invention provides a tape cassette (hereinafter referred to as a second tape 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. The present invention relates to a cassette adapter for use in a device in which the first tape cassette is used.

Compared to compact tape cassettes for audio, tape cassettes used in video tape recorders, etc. are considerably larger due to standards such as tape width and distance between reels, and even in portable equipment, Since the tape cassette is large, there is a limit to its miniaturization, which is a major problem.

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

For this reason, as a means of downsizing tape cassettes and equipment, the tape width is the same as that of the conventional first tape cassette, and the distance between the reels is approximately the same as that of the first tape cassette. It has become possible to consider a second tape cassette that is smaller in size and has a tape amount that is approximately % to % of the full size first tape cassette.

Such a small second tape cassette can not only provide the same image quality as the current first tape cassette, but also make the tape cassette itself more compact.
Although it is possible to downsize equipment using tape cassettes, the amount of tape is naturally reduced, so 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 purpose, etc., and it is desirable to use a small second tape cassette that is compatible with the first tape cassette. In other words, equipment using the first tape cassette is also required to be able to use the first tape cassette, and a cassette adapter that satisfies this requirement becomes necessary.

An object of the present invention is to enable such a cassette adapter to draw out and store a magnetic tape without damaging the magnetic tape.

Hereinafter, an embodiment of the cassette adapter of the present invention will be explained using the drawings of FIGS. 1 to 3.

In the figure, 1 is a second tape cassette, and this second tape cassette 1 rotatably supports and stores reels 4 and 5 on which a magnetic tape 3 is wound in a notebook case 2. , by forming a predetermined running path such that the magnetic tape 3 is exposed to the outside on the front side. In this second tape cassette 1, the reel 4 on the one ply side passes through the window (not shown) provided at the bottom of the nof case 2.
It can be operated from the bottom side of the device, and the tip of the reel stand of the device fits into the internal hollow part and is locked, and the other reel 6 on the pick-up side is attached to a reel shaft (not shown) embedded in the half case 2. A gear part 6a is formed on the outer periphery of the half case 2, and is rotated by a gear on the drive source side that meshes with the gear part 5a through a window on the side surface of the half 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 the main body case 6. In this main body case 6, a reel gear 7 which 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 7. A window (not shown) is provided at the tip of the stand to allow the reel 4 of the second tape cassette 1 to be attached thereto. An idler gear 8 meshes with the reel gear 7, and this idler gear 8
is the gear portion 6 of the reel 6 of the second tape cassette 1.
a meshes with each other, and the rotation of the reel gear 7 causes the reel 6 of the second tape cassette 1 to rotate, causing the magnetic tape 3 to travel.

A pick-up side pull-out arm 9 in the shape of a fishing needle is arranged in the main body case 6 so as to rotate around a shaft 9a, and at one end of the pick-up side pull-out arm 9,
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.

In addition, at a position facing the take-up side pull-out arm 9 of the main body case 6, a sagray-side pull-out arm 11 has a shaft 11a.
Similarly to the pickup arm 9, the magnetic tape 3 of the second tape cassette 1 is hooked onto one end of the sagray side pullout arm 11, and pulled into a predetermined position. Several guide rollers 12 are provided for pulling out to the position shown in FIG. This supply side drawer arm 1
A knob 11b is provided at the other end of the knob 11b.
is fitted into a square hole 13b of a dog-shaped connecting arm 13' arranged to rotate about a shaft 13a.

Further, a knob 13c is provided at the other end of the connecting arm 13, and the knob 13c is fitted into a square hole 14b of the connecting arm 14, which is arranged to rotate about a shaft 14a. 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.

A drive rack 16 is engaged with a pinion gear 16 that is rotated by a drive source such as a motor or manually, and a cam groove 16a into which the knob 9b of the pickup arm 9 is fitted is provided on the lower surface of the drive rack 15. ing.

The cam groove 16a of the drive rank 15 has the drive rack 1
There is a part A that is parallel to the moving direction of 5 and a part B that is inclined.

Further, an L-shaped cam groove 16b is provided on the upper surface of this drive rack 15, and the cam groove 15b is provided with a shaft 17a.
Knob 1 of L-shaped connecting angle 17 that rotates around
7b is fitted. A knob 19a of a guard panel opening/closing rod 19 that slides while being guided by guide shafts 1B&, 18b is fitted into the square hole 17c at one end of the connection angle 17. That is, as the connecting angle 17 rotates about the shaft 17a, the guard panel opening/closing rod 19 slides while being guided by the guide shafts 18a and 18b.

Reference numeral 20 denotes a guard panel that is arranged to be openable and closable at the front opening of the main body case 6 of the adapter, and shafts 20 a +' 20 b at both ends of this guard panel 20 are provided on the side plates of the main body case 6. Bearing hole 21a.

21b.

Among the B bearing holes 21 a and 21 b that rotatably support the shafts 20 a and 20 b of this guard panel 20, +tQ
The I+ receiving hole 21a is a long hole, and the shaft 2 of the guard panel 20
0a is movable within the bearing hole 2Ia in a direction in which the guard panel 20 protrudes toward the front side.

Further, the other end of a spring 23 whose one end is locked to the protrusion 22 of the main body case 6 is locked to the shaft 20a of the guard panel 2o.
0 is attracted to the inside of the main body case 6. Further, the tip of the guard panel opening/closing rod 19 is in contact with the shaft 20a of the guard panel 2o.

In such a configuration, when the drive rack 15 starts to move in the direction of arrow A, the knob 9b of the pull-out arm 90 on the kick-up side is located at the part A of the cam groove 16a at this point, so the pull-out arm 90 on the kick-up side Arm 9 does not rotate.

On the other hand, in the connection angle 17, the knob 17b is connected to the drive rack 1.
Since it is located in the right-angled part of the cam groove 15b of No. 6, it rotates in the direction of the arrow, and as a result, the guard panel opening/closing rod 19 pushes the shaft 20a of the guard panel 2o, so the guard panel 20 Resisting the tensile force of 23,
It rotates around the shaft 2ob in the direction of arrow C and opens, resulting in the state shown in FIG.

Then, the drive rack 15 further moves in the direction of arrow A, and the knob '9b of the pick-up side pull-out arm 9 moves into the cam groove 1.
When reaching the part 5110B, the take-up side pull-out arm 9 rotates in the two directions indicated by the arrows, since the part B of the cam groove 15a is inclined. As a result, the connecting arm 14 engaged with the knob 9b also pivots about the axis 14''a, and the connecting arm 1 connected to the connecting arm 14 also rotates about the axis 14''a.
3 also rotates around the support 13a, thereby causing the supply side pull-out arm 11 to rotate around the shaft 11a in the direction indicated by the arrow. The state at this time is shown in FIG.

When the pick-up side pull-out arm 9 and the supply-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 supply control pull-out arm 11 are rotated.
The magnetic tape 3 which had been pulled out of the nof case 2 by this operation is now accommodated within the nof case 2. As shown in FIG. 2, since the magnetic tape 3 is housed in the nof case 2, a second
tape cassette 1 can be taken out.

Furthermore, by performing the opposite operation to this operation, the magnetic tape 3 can be pulled out from inside the nof case 2 to the same tape guide position as the first tape cassette (the state shown in Figure 1). This allows the second tape cassette to be used in the equipment that uses the first tape cassette. At this time as well, the drive rack 15 moves in the opposite direction to the direction of arrow A, and the tape cassette 3, the knob side pull-out arm 9, and the supply side pull-out arm 11 pull out the magnetic tape 3 from the second tape cassette 1. Until the tape cassette is rotated to the tape kite position, the guard panel 20 is in the state shown in FIG. At this point, the guard panel opening/closing rod 19 moves to its original position, and the tensile force of the spring 23 closes the guard panel 2o as shown in FIG.

In this way, the timing at which the guard panel 2o opens and closes and the timing at which the pick-up side pull-out arm 9 and the supply-side pull-out arm 11 rotate are ordered by the cam grooves 15a and 16b of the drive rack 16. The magnetic tape 3 is not pulled out or stored before the guard panel 2° is opened, and the magnetic tape 3 can be smoothly pulled out and stored without damaging the magnetic tape.

Further, when the magnetic tape 3 is pulled out or stored from the second tape cassette 1, the guard panel 20 is opened by rotating around the shaft 20b in a direction in which the shaft 2 Oa side protrudes in the front direction. Since the tape 3 is not completely exposed to the outside, it is possible to prevent the magnetic tape 3 from being damaged as much as possible, and since the movement is within the thickness of the main body case of the adapter, there is no need to apply excessive force from the outside to the guard panel 20. The damage to the guard panel 20 can be prevented as much as possible.

In addition to the above-mentioned movement, this guard panel 20 also moves as shown by the arrow in FIG.
It can also move in the opening and closing directions of Q.

As described above, according to the cassette adapter of the present invention, the guard panel is opened and closed, and the magnetic tape is pulled out and stored in a predetermined order, so that the magnetic tape can be pulled out and stored before the guard panel is accidentally opened. The magnetic case can be pulled out and stored smoothly without damaging the magnetic tape, and since the guard panel opens with one end protruding toward the front, the magnetic tape is completely exposed to the outside. In addition to not being exposed, unreasonable force is less likely to be applied to the guard panel, and damage to the magnetic tape and damage to the guard panel can be prevented as much as possible.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a state in which a magnetic tape is pulled out in a cassette adapter according to an embodiment of the present invention;
The figure is a plan view showing the cassette adapter in a state in which a magnetic tape is accommodated, and FIG. 3 is a perspective view showing the internal structure of the cassette adapter. 1. River, second tape cassette, 2. Half case, 3. Magnetic tape, 4.5 River.
Reel, 6...Body case, 7...Tune/reel gear, 8...Idler gear, 9...Tick-up side pull-out arm, 1°, 12...・Guide roller, 11. Old...Supply side drawer arm, 13.
14. Old...Connection arm, 15. River...Drive rack, 1
7...Connection angle, 19...ga. - Door panel opening/closing rod, 20...-Guard no. (Flannel, 2oa, 2ob, =--shaft, 21 a, 2
l b-・-Bearing hole.

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 a reel of a second tape cassette housed in the case, a guard panel is provided in the front opening of the main case to be freely openable and closable, and a shaft at both ends of the guard panel is provided. One of the bearing holes of the rotatably supported main body case is made into a long hole so that the guard panel can be moved in the direction of protruding to the front side, and a guard panel opening/closing means for opening and closing the guard panel in the direction of protruding to the front side. and driving the guard panel opening/closing means by moving from the first position to the second position.