JPH0323551A - Magnetic tape device - Google Patents

Abstract

PURPOSE:To cope with the detection of the beginning/end of each magnetic tape in two kinds of tape cassettes respectively by providing one pair of tape detecting means for detecting the beginning or end of the tapes in a 1st and 2nd tape cassettes and operating one of the tape detecting means by interlocking it with the movement of a tape driving means. CONSTITUTION:A 2nd moving means 18-20 for moving a 2nd holding means 7 to a position where the 1st cassette is not prevented from moving and one pair of the tape detecting means 10, 11a and 11b for detecting the beginning or end of the tapes of the 1st and 2nd tape cassettes 1 and 2 are provided for such a case that the 1st tape cassette 1 is brought in contact with or separated from the tape driving means 22, 26, 27, 29, 30 and 36-39 by the 1st moving means 12-17. Then, one part 10 of the tape detecting means 10, 11a and 11b is operated interlocking with the movement of the tape driving means 22, 26, 27, 29, 30 and 36-39. Consequently, the two kinds of tape cassettes 1 and 2 can directly be loaded from the same cassette inserting hole 4. By this method, the beginning and end of the magnetic tapes in the two kinds of tape cassettes can thus be detected.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic tape device such as an audio tape recorder or a video tape recorder (hereinafter referred to as a VTR), and in particular to a magnetic tape device such as an audio tape recorder or a video tape recorder (hereinafter referred to as a VTR), and in particular to a magnetic tape device that can be used for two small tape recorders of different sizes and shapes. The present invention relates to a mounting device.

Conventional Technology Although the VTR industry can no longer be expected to grow as fast as it used to, the number of units is increasing year by year, and competition among companies is becoming more and more intense. In the future, I will especially focus on movies (
Although growth is expected in the VTR integrated camera field,
Currently, there are three different types of companies in this field, and they are competing for market share. These movies use different cassettes and some have different formats. Furthermore, some of them cannot be used directly with stationary type VTRs, and some require special adapters.

For movies, the shape of the cassette is not a particular problem when used by itself, but when considering how to play and watch movies at home, it is much more convenient to play them directly on a stationary model, and the popularity of movies has decreased. As this trend continues to rise, it is thought that the convenience of the stationary model will be questioned in the future.

An example of a conventional magnetic tape device will be described below with reference to the drawings. FIG. 17 is a perspective view showing how two types of tape cassettes of different shapes are installed in a conventional VTR. In FIG. 17, 1 is a first tape cassette, and 2 is a second tape cassette, which is different in size from the first tape cassette 1 but has a rill wound with similar magnetic tape. 103 is the main body of the device, and 104 is a cassette insertion slot provided on the front side thereof. Reference numeral 105 denotes a tape cassette 1 mounting device, which is equipped with a conveying means for moving each tape cassette to a predetermined position within the VTR main body. Reference numeral 106 is an adapter to which the second tape cassette 2 can be directly attached, and its external dimensions are the same as those of the first tape cassette 1. FIG. 18 is a plan view showing the state of a conventional VTR after the first tape cassette 1 is loaded into the device main body 103 during recording or playback and during fast forward and return operations. In Figure 18, 1a to 1fi
These are the structural elements disposed inside the first tape cassette 1, where 1a is a supply reel and 1f is a take-up reel. 1b to 1ei are tape guide posts. Numeral 107 is a magnetic tape, and grooves 108 to 123 are guide members for the magnetic tape 107. 124 is a sub-loading arm, and 1 is implanted at its tip.
The magnetic tape 107 is pulled out from the first tape cassette 1 via the knurled loading post 123, and the magnetic tape 107 is moved to P5.
Together with the boss 122, it forms a table loop during fast forward and fast reverse operations.

126 is a light emitting element such as an LED, and the mechanical shear 7
It is planted on 101. 126a$” and 126b
are the S side light receiving element and the T side light receiving element, respectively, and 611
It is located on the optical axis of the light emitting element 126 and faces opposite to it, and in many cases is arranged at the outer edge of the tape cassette mounting device 106 or planted on the mechanical palm 101. The light receiving element is composed of, for example, a phototransistor, and when the light emitted from the light emitting element 126 reaches a certain level or more, it senses the light and converts the optical signal into an electric charge. Figure 19 shows the conventional VT
FIG. 7 is a plan view showing the state of the second tape cassette 2, which is pressed in the R button, during recording or reproduction and during fast forward and fast reverse operations after it is loaded into the magnetic tape device 103; In FIG. 19, the second tape cassette 2 is already installed in the cassette adapter 106, and the magnetic tape 1
07 has previously formed a tape loop consisting of each tape guide post (2b to 2h) between the supply reel 2a and the take-up reel 2i. Basically, in this state, the first tape cassette 1 shown in FIG.
112, 113, 115, 1, which is the same as the state immediately after being installed in 03, and is therefore the same tape drawer member.
The magnetic tape 107 in the second tape cassette 2 is pulled out by the tape guide posts 16, 122 and 123 to form a tape tape as shown in FIG. 127 is a transmission gear and cassette adapter 106
Inner winding! j-/L'2j and the winding roll 21 in the second tape cassette 2, the mechanical shear 7101
It plays the role of transmitting the driving force from the take-up reel stand (not shown) on the side to the take-up ')-/I/2i. 1st
As can be seen from Fig. 9, even when the second tape case 2 is used, the light emitting element 125A and both the S and T light receiving elements 12
The positions of 6a and 126b are the same as when the first tape case 1 is used.

The operation of the conventional magnetic tape device configured as above will be described below. First, when recording or reproducing using the first tape cassette 1, the first tape cassette 1 may be directly inserted into the cassette insertion 11104 of the magnetic tape device 103 as shown in FIG. When the tape is pushed in to a predetermined position, the tape cassette 105 moves f↑' and the first tape cassette 1 is inserted.
is attached to a predetermined position on the mechanical chassis 101. After loading, as shown in FIG. 18, the P6 arm 122 moves the magnetic tape 107 in the first tape cassette 1 to a predetermined position and moves it. Stop kidnapping.

The tape loop at this time is shown by dotted lines and solid lines in the figure, and the 11'-feed or fast return operation is performed in this state.

During recording or playback, the mouth (11)
2, 113, 115 and 116), the magnetic tape 107 is further pulled out, and the magnetic λ head driver A 1 1
4 by a predetermined amount -}iI. The Dave loop at this time is shown only by solid lines in the figure. For example, when the magnetic tape 107 wound in the first tape cassette 1 reaches the terminal casing during playback, a transparent tape appears (because it is blocked by the magnetic tape 107). The light receiving element 126a senses the light from the light emitting element 125, and a stop signal is immediately issued to cancel the reproducing operation. V feed or rtL return movement flF
At any time, when the magnetic tape 107 reaches the end or the beginning, the operation is automatically canceled in exactly the same manner as described above.

Next, when using the second tape cassette 2,
As shown in FIG. 7, it is inserted into the cassette insert opening 104 of the apparatus main body 103 after the cassette adapter 106 has been completely installed. After that, the second tape cassette 2 is installed in a predetermined position on the mechanical chassis 101 in exactly the same manner as the first cassette tape 1 of 1111 series, and the state Q]1< shown in FIG. 19 is reached. Recording, playback, and fast-forwarding and reversing operations are performed. As can be seen from FIG. 19, the second
The tape loop formed by the tape cassette 2 is capable of being used even at the same position. Therefore, when the second tape cassette 2 is used, the magnetic tape 107
Since the beginning and end of the tape cassette 1 can be detected in exactly the same way as when using the first tape cassette 1 described in iiiJ, all operations are possible. At this time, the height of the light emitting element 125 above the mechanical shear 101 is approximately equal to the center line of the width of the magnetic tape 107, and +
111 is housed in a cylindrical recess provided in the power center adapter 108. This also applies to the first tape cassette 1.

Problem to be Solved by the Invention However, in the above structure, when using the second tape cassette, it is necessary to separately attach a dedicated cassette and toe adapter.
Moreover, it is very troublesome to handle in case the cassette adapter gets lost or the battery that powers the cassette yl-adapter runs out.

Therefore, the most effective way to solve this problem is to create a magnetic tape system L't that allows two types of tape cases with different shapes to be dyed directly without an adapter. I can think of this, but it is not easy to put it into concrete form. This is because when considering the simplest method, it is the conventional magnetic tube mounting! From the viewpoint of not impairing the operability of the cassette tape, one cassette is used in common, and the cassettes of the 2 cassettes can be connected directly without any intermediate intervention such as cassette 1' adapters. It is desirable that the
A difficulty arises in that the mechanical chassis must handle all the parts that would allow the second tape cassette 2, which is smaller than the tape cassette 1, to be attached to the magnetic tape device. In particular, regarding the end/start end detection means of the magnetic tape, as can be seen from Fig. 19, if the second tape cassette is directly installed at a predetermined position on the mechanical chassis without using a cassette adapter, the magnetic tape immediately after installation is (Deep loops are 2a~2b~2C~2q~2h in the diagram)
~21, but this is a state in which interference with the T degree light emitting element 126 cannot be avoided, and the -l. t, tape damage occurs and a new configuration must be considered, which is a serious problem.

In view of the above-mentioned problems, the present invention allows a single mechanical chassis to be mounted directly on a single mechanical chassis, and allows two types of tape cassettes with different shapes to be directly attached to the single cassette insertion slot without using a cassette adapter or the like. Moreover, the present invention provides a magnetic tape device equipped with a detection means capable of detecting the end and start ends of any of the magnetic tapes in the two tape cassettes.

Means for Solving the Problems In order to solve the above problems, the magnetic tape device of the present invention has the following features:
A first tape cassette having a predetermined size and shape and containing a magnetic tape, and a second tape cassette that is smaller than the first tape cassette and has a magnetic tape similar to the first tape cassette inside. a cassette inlet for directly inserting the tape cassette, a first holding means for holding the first tape cassette inserted from the cassette insertion port No. 61I, and a first holding means for holding the second tape cassette inserted from the cassette insertion port No. 111I; 2 holding means, and a tape driving means for driving a magnetic tape in the first tape cassette 1 or the second tape cassette; a first movement of reciprocating the first holding means between a first position where the first tape cassette is inserted into the first holding means and a second position where the first tape cassette is mounted on the tape drive means; means, a third position that does not impede movement of the first tape cassette by the first moving means, and a fourth position that inserts the second tape cassette into the second holding means from the cassette insertion opening. and a sixth position in which the second tape cassette described in 111-1 is mounted on the tape drive means.
11 selectively moves the holding means, and attaches or detaches the first tape cassette to or from the tape driving means using the first moving hand +S.
1I second moving means for moving the second holding means to the 1111 third position; a pair of tape detection means<r L
, at least one of the tape detecting means operates in conjunction with the movement of the tape driving means described in iii.
It is something that was achieved.

Effects of the present invention With the above-described structure, two types of tape cassettes with different shapes can be inserted into the same cassette insertion slot without using a so-called dedicated cassette adapter, and recording, playback, or other GJJ work can be performed in a single cassette. The chassis enables at least one pair of methods for sensing the end and start ends of each magnetic tape in the two types of tape case notes.
The dedicated tape detection means can handle all tape running states (broadly divided into two states: recording or reproducing and fast forwarding and reversing operations).

EMBODIMENT A magnetic tape device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the mounting state of two types of tape cartridges having different shapes in a magnetic tape device according to an embodiment of the present invention. In Figure 1, 1 is the Tedecassette of 'lrJ1, and 2
the first tape cassette 1 with the second tape cassette
It is smaller and has a reel wound with magnetic tape similar to the first tape cassette. 3 is a main body of the device, and 4 is a cassette insertion slot provided on the front side thereof. Reference numeral 6 denotes a tape cassette mounting device, which includes a conveyance means for moving the FciI first tape cassette 1 and second tape cassette 2 to predetermined positions within the main body 3 of the apparatus. The mode selection button 41 is used to switch in advance to the state of the tape cassette desired to be used.

FIG. 2 is a front view showing the state in which the first tape cassette 1 is attached to the magnetic tape device 3 in one embodiment of the present invention. Figure 3 is a schematic diagram of the right side. Referring to FIGS. 2 and 3, 6 is an F holder which is a holding means exclusively for the first tape cassette, and 7 is a C holder which is a holding means exclusively for the second tape cassette. In the 8-pan mechanical chassis, 9a is a supply side reel stand disposed on the mechanical chassis 8, 9b is also a take-up side reel unit, and 10 is a movable light emitting element unit, but the figure shows the first tape cassette unit. 1 is shown completely installed in a predetermined position of the mechanical chassis 8-L. Reference numerals 11aj, - and 11b are an S-side light receiving element and a T-side light receiving element, respectively, which receive light such as infrared light emitted from the movable light emitting element UNINOTO and detect the end and start of the tape in each tape cassette. In many cases, as in this example,
It is disposed in a part of the iJ tape cassette loading device. Referring to Fig. 3, reference numeral 12 indicates a holder drive motor which is the drive source for the two holders, and 13 a main cam which directly receives the power from the holder drive motor 12, forming cam grooves on both the front and back sides. Even when they are removed, the cams on the front side drive the F holder 6, and the cams on the back side drive the C holder 7.

from the cam on the surface of the main cam 13. The driving force is 1
The signal is transmitted to the F holder gear 17 via the F holder main rod 4, the F neutral gear 16, and the F sub gear 16, and is then transmitted to the F holder 6, which is integrally constructed. On the other hand, the driving force from the cam on the back side of the main cam 13 is transmitted to the C holder main rod 18, the C sub gear 19, and the wiper arm 2o.
I 6 self is transmitted to Honoreda 7.

FIG. 4 shows a magnetic tape device according to an embodiment of the present invention, and shows the state immediately after the tape cassette 1 of Note 1'IIJ@1 is installed in a predetermined position on the mechanical chassis 8 in the device main body 3. FIG. In Figure 4, 21 is a magnetic tape, 22 is a tension post, and 26 is a P2
The posts, 27 are the S side tilted post, 29 are the T side tilted posts, 30 are the P3 posts, 36 are the P6 posts, and 37 are the paza loading posts. A sub-loading arm 338 is a tape drive (loading) means for pulling out and driving the tape from the tape cassette 1, and the loading boss 37 is implanted at the tip.

In the 39 loading motor, each member corresponding to the above-mentioned tape driving means uses this motor as a driving source.

FIG. 5 shows the magnetic tape device according to an embodiment of the present invention when loading is completed and subloading is completed from the state shown in FIG. 4. Each figure from FIG. 6 to FIG. 9 shows a magnetic tape device according to an embodiment of the present invention, in which a second tape cassette 2 is placed in a predetermined position of the magnetic tape device 3 by the tape cassette loading device 5. The state in which the first tape cassette 1 is installed and the loading is completed is shown in a form that completely corresponds to the explanation of the housing in FIGS. 2 to 6 in the case of the first tape cassette 1. FIG. 10 is an enlarged view showing the state immediately after the sub-loading operation is performed near the movable light emitting element unit 10, and FIG. 11 is a side view thereof. In FIG. 10, 10a is a light emitting element such as an LED, 10b is an element holder which is a support member for the 1111 light emitting element 10a, and 10c is a holder vane.
Reference numeral 0d denotes a holder spring, which is attached in a positional relationship that allows the element holder 10b to be stably maintained horizontally or vertically. Figure 12 shows the subloading completed state.
FIG. 5 is an enlarged plan view of a movable light emitting element unit.
FIG. 13 is a side view thereof. FIG. 14 shows the light emitting element 10a and both light receiving elements (1) in an embodiment of the present invention.
Fig. 15 and Fig. 1e are side views showing the optical axis relationship between buttons 1a and 11b), and Figs. 15 and 1e show the optical axis relationship with both light receiving elements in the case where the light emitting element is fixed on the mechanical chassis. FIG.

The operation of the magnetic tape device constructed as described above will be explained below with reference to FIGS. 1 to 16. 1st
As shown in the figure &0
Although it is a single tape cassette, it is possible to directly insert and use both the first tape cassette 1 and the second tape cassette 2, which have different shapes. First, the case where the first tape cassette is used will be described. The cassette holder in the tape cassette mounting device 5 is normally in a standby state in which the F holder 6 can be inserted, but if this is not the case, pressing the mode selection button 41 switches the cassette holder to the second i12! 6 [] (The F holder 6 is placed at the height of the cassette insertion slot 4 and below the handle iii of the C holder 7 41J. From this state, the first tape cassette 1 As the tape cassette is inserted into the F holder 6 from the tape cassette insertion opening 4, the load increases and the position is reached where single insertion is stopped. This is the position where the installation of the tape cassette 1 has been completed and will be referred to as the first position.Explaining according to FIG. A provided F holder position detection switch (not shown) is turned on, the holder drive seventh data 12 is activated, and the F holder position detection switch (not shown) is activated, and the F holder position detecting switch (not shown) is activated, and the F holder
The holder main rod 14 begins to move in the direction of the arrow shown in the figure. Following this movement, the F main gear 16 and the F sub gear 16 rotate simultaneously, which is transmitted to the F honore gear 17, and the F holder 6 starts to move rightward, moving along the groove shown by the two-dot chain line in the figure. The first tape cassette 1 is then transported to a predetermined position on the mechanical shear 8. This one samurai activated the F holder position detection switch again and
1I The holder drive motor 12 stops. The dotted line and matte pattern in the figure show the state in which the first tape cassette 1 is stored in a predetermined position on the mechanical chassis 8, and this position is moved to the second position. I will call it. Figure 4 shows the state at this time in plan view1.As you can see from the figure,
The opening in the tape cassette 1 has various members (
22, 26, 27, 29, 30, 381 and 37) are all stored. Further, the movable light emitting element unit 10 is housed outside the first tape case 1 and lower than the lower end of the magnetic tape 21. The first tape cassette 1 is 41
When installed in position, F holder position 11 is +3il! The loading motor 3 receives the signal from the t detection switch.
9 is started immediately, and the P6 bonnet 36, the subrod arm 38) and the subrod bonnet 37 move together through the transmission mechanism shown by the dotted line and the one-dot chain line in FIG. When the sub-loading operation is completed, a tape loop as shown by the dotted line and partially solid line in Figure 6 is formed. Element unit y No. is located in the table ~. 11
Light 4, which is the same height as a and 11b and is indicated by a dashed line in the figure,
+l+ is used to detect the end and start of the first tape case 1. The heights of both the light emitting and light receiving elements are as shown in Figure R14.
Details regarding the operation of 10 will be explained using FIGS. 10 to 13. As shown in FIGS. 10 and 11, when the sub-loading arm 38 begins to rotate in response to the driving force from the loading motor 39, the sub-loading bone installed near the tip of the loading arm 38 starts rotating. The magnetic tape 21 is gradually pulled out of the cassette by the trigger 37, but at this time, the light emitting element 10a and the element holder 10b fall down parallel to the mechanical chassis 8 and are held by the holder spring 10d, as shown in FIG. The light emitting element 10a and the entire unit are lower than the bottom edge of the magnetic tape, but there is a pin-shaped part on a part of the element holder 10b. There are two protrusions, one of which is on the line connecting the co-movement axis and the center of the light emitting element, and the other is located at a position where the rotation axis has been moved 90 degrees centigrade to the sub-loading arm 38. (See Fig. 11).

Therefore, as the amount of rotation of the loading arm 38 increases, the subloading arm 38 and the interlocking arm 3
8 comes into contact with the higher one of the two pin-shaped protrusions of the element holder 10b, and the element holder 1o
b rotates 900 times around the rotation axis, becomes upright as shown in Figure 13, and is held by the holder spring 10d with a spring bias in the rotation direction. When the element holder 10b stands up, the position of the magnetic tape 21 is as shown in FIG.
As can be seen from Figure 12, magnetic 1 (tape 2) is always
1 takes the lead and after the normal operation, the element holder 1 ob
Since it is configured in a positional relationship that
- Be sure to add 6il to the built-in table loop when the installation is complete.
This means that the state in which the T-type light emitting element unit 10 is present is maintained.1 Now, returning to FIG. 5, when a recording or playback operation is performed from the subloading state, tension buttons
The so-called loading guide post members, namely the 2 post 26, the S side oblique bonut 27, the Tilm oblique post 29, and the P3 post 30, operate simultaneously to further pull out the magnetic tape 21 described in II. 1. At this point, the loading is completed, and the solid line in the figure shows the table.
It is a pool. At this time, the planar position (point A) where the magnetic tape 21 blocks the light from the light emitting element 10a is different from the position (point B) in the sub-loading state on the S-ray/ray side, but as described above. Since the emitting element 10 & and the receiving elements 11a & 11b are arranged at the same height, no particular problem arises, and no matter which table state the magnetic tape is in, the end of the magnetic tape The starting end can be detected.Next, the case where the second tape cassette 2 is used will be described. As mentioned above, usually the first
Since the user is currently in a state of 1 month, it is first necessary to press the mode selection button 41 to switch the holder. When you press the mode change button 41,
As shown in the figure, the holder drive motor 12 is activated and the C holder main iron 18 begins to move in the direction indicated by the arrow in the figure via the cam groove provided inside the main cam 13. As a result, the wiper arm 20 rotates clockwise to move the C holder 7 described in 11) from the position shown in FIG. 3 (this will be referred to as the third position) to the position shown in FIG. (hereinafter referred to as the fourth position), and is stopped by a C holder position detection switch (not shown) provided at a predetermined position. FIG. 6 shows the state at this time viewed from the front. F) The position of the C holder 7 in the fourth position of item 11 corresponds in height to the height of the cassette insertion opening 4, and the second tape cassette 2 is maintained in a state where it can be inserted at any time. Here, as an operation immediately after pressing the Air writing mode switching button 41, the other operation is performed in parallel with the operation of the C holder 7 described in t111. That is, the first tape cassette 1 and the second tape cassette 2 have different shapes, and in addition, the tape cassette accommodates each loading guide member when it is torn at a predetermined position on the mechanical chassis 8. Since the positions of the openings in the tape cassettes are also different, before inserting a specific tape cassette, complete the movement of each loading guide part according to the tape cassette. This is the action of going. The loading guide members referred to here are 22, 28, 27, 29, 30, 36 of -Sj shown in FIG.
and 37, respectively, from the position shown in FIG.
By moving in the 1st position in i, the operation of the C holder 7 is completed and the second tape cassette 2 is moved.
The insertion of the data is almost complete. 2nd Deep Kaseno 1~
The operation after inserting the tape cassette 2 into the fourth position of the C hole plug 7 can be explained in the same manner as in the case of the first tape cassette 1 described in 1]1. In FIG. 7, when the second tape cassette 2 is pushed further in from the fourth position, the holder position detection switch n11 assists the holder drive mode 111I again. 912 is started, and 1) the wiper arm 20 starts to move further in the same manner as described in II, and the C holder 7 moves along the U-shaped groove shown in the figure to a predetermined position on the mechanical chassis 8. It is installed in the position of This position is indicated by the dotted line and satin pattern in the figure, and will be referred to as the fifth position. As you can see, the third position of the third position and the sixth position of the third position of the third position and the sixth position of the middle position are
By reciprocating in a U-shape including t, the second tape cassette 2 can be attached and detached, and I*g
It is housed so as not to interfere with the F holder 6 being in the first position. Immediately after the second tape cassette 2 is installed in the 6th position indicated by 111I, the front 3 rotating motor 39 starts and the loading operation starts.
■Note P6 boss 36 and sub-loading boss 37
starts to operate and begins to pull out the tape 21 from the second tape cassette, while raising the holder 10b of the movable light emitting element unit 10 as shown in FIG. The sub-loading operation is completed by forming a tape recorder in the state shown in FIG. 9 from the state shown in FIG.

The fast-forward/backward operation is performed in the tape recorder state shown by the dotted line in the middle and the partially solid line in Fig. 9. On the other hand, during recording or playback, the tape recorder shown by the solid line in the figure is carried out in the same manner as in the case of the first tape cassette 1. Let's do it. At that time, the tape is wound by winding the transmission gear 4o and the second tape cassette 2, which are arranged in the mechanism yarn 8{1υj when the second tape cassette 2 is installed in the fifth position. Take side! J-/
This is done by receiving the power from the take-up side reel stand 9b by meshing with a gear part provided on the outer peripheral part of L'2i. When recording or playing back using the second tape cassette 2,
As can be seen from FIG. 9, the detection of the end and start ends of the magnetic tape 21 during fast-forward and fast-reverse operations can be carried out under exactly the same conditions as in the case of the first tape cassette 1. , Finally, in the above theory {1] 1,
Regarding the operation for taking out the first tape cassette 1 or the second tape cassette 2, individual explanations will be omitted since it is easily understood that they can be realized by performing completely opposite operations.

It should be noted that the method shown in FIG. 16 or FIG. 16 can be easily considered as means for detecting the end and start ends of the magnetic tube other than the above-mentioned embodiment of the present invention, but in either case, it is difficult to realize the method. I can say it. This is because both the example shown in FIG. 16 and the example shown in FIG. When attempting to use a constant light element to handle both directions, the height of the light emitting element must be set lower than the lower end of the magnetic tape so as not to interfere with the movement of the magnetic tape, so the height of the light emitting element must be set lower than the lower end of the magnetic tape, so the height of the light emitting element must be set lower than the lower end of the magnetic tape. It becomes the axis of truth with However, in such an optical axis, two types of tape cassettes with different shapes as in the embodiment of the present invention,
In the case where the tape is directly attached, as shown in Figure 6, 7.4, all of the It is very difficult to set the light 4111 with sufficient space.

Furthermore, it is nearly impossible to cover everything with a single starting element1, so one possible solution to this problem is to provide multiple light-emitting elements and light-receiving elements as shown in Figure 16. However, the problem remains that the mounting space and cost for each element are high.

Effects of the Invention As described above, according to the present invention, there is provided a first tape cassette containing a magnetic tape and having a predetermined size, button, and shape, and a first tape cassette that is smaller than the first tape cassette and has the first tape inside. A second tape cassette containing magnetic tape similar to
a cassette insertion slot into which the tape cassette of 1 is directly inserted;
11) A first holding means for holding the first tape cassette inserted from the cassette insertion opening; and a second holding means for holding the second tape cassette inserted from the cassette insertion opening.
holding means, and the first tape cassette 1 or 61J.
a tape drive means for driving the magnetic tape in the second tape cassette; a first position for inserting the first tape cassette into the first holding means from the cassette 1 insertion slot; a first moving means for reciprocating the first holding means to a second position for attaching one tape force cent to the tape driving means; a third position where the moving operation is not obstructed; a fourth position where the second tape cassette is inserted into the second holding means from the cassette insertion slot; and a fifth position where the second tape cassette is mounted on the tape drive means. selectively moving the second holding means to a position;
and a second moving means for moving the second holding means to the third position when the tape cassette of @1 is attached to or removed from the tape driving means by the first moving means. a moving means; and at least a pair of tape detecting means for detecting a starting end or a terminal end of the first tape cassette and the second tape cassette, and at least one of the tape detecting means is connected to the tape driving means. By providing a structure that operates in conjunction with movement, two types of tape cassettes with different shapes can be inserted into each tape cassette from a single cassette insertion slot using a simple structure with a single drive source. In this state, it is now possible to directly install the tape cassette without using conventional intermediates such as cassette adapters, and from the viewpoint of operability, it is possible to perform operations such as recording or playback of any tape cassette. be able to. Moreover, magnetic tape
The end/start end detecting means is located outside of the two types of tape cassettes mentioned above, and the light emitting element section moves in conjunction with the operation of the tape drive means for pulling out the liai tape without interfering with the movement of the magnetic tape. , it is possible to realize it with an extremely simple configuration without requiring a new drive source and with no wasted movement. Since there is a margin for variations in the optical axis due to variations in the position of each element, it is possible to secure enough margin for variations in the optical axis due to variations in the position of each element. It is also possible to obtain the excellent effect that the end and start ends can be stably detected even if the value changes.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing how two tape cassettes of different shapes are attached to a magnetic tape device according to an embodiment of the present invention, and FIG. 2 is a perspective view showing how a first deep cassette is attached to the magnetic tape device. Figure 3 is a right side view of Figure 2, Figure 4 is a plan view of the first tape cassette immediately after it is installed in the second position, Figure 5 is a completed sub-loading from the state shown in Figure 4. Plan view at the time and when rotation is completed, No. 6
The figure shows the state in which the second tape cassette is installed in the magnetic tape device, Figure 7 is the right side view of Figure 6, and Figure 8 shows the second tape cassette immediately after being installed in the fifth position of the magnetic tape device. 9 is a plan view of the sub-loading from the state shown in FIG. 8 and the completion of loading. FIG. 10 is an enlarged plan view of the vicinity of the movable light emitting element Unisoto immediately after the start of the sub-loading operation. Fig. 10 is a side view, Fig. 12 is an enlarged ITl side view of the vicinity of the movable light emitting element unit when the sub-loading operation is completed, Fig. 13 is a side view of Fig. 12,
Figure 4 is a side view showing the optical axis relationship between the light emitting element and both light receiving elements, and Figures 16 and 16 show the optical axis relationship between the light emitting element and both light receiving elements as an example of Te + b. 17 is a side view, and FIG. 17 is a perspective view showing how two types of tape cassettes with different shapes are installed in a conventional magnetic tape device. FIG. 18 is a side view of the magnetic tape shown in FIG. 17 of the first tape cassette. 19 is a plan view showing the state immediately after mounting on the device, the state in which sagging is completed, and the state in which loading is completed.
This is a diagram showing the second tape adapter shown in Figure 7 immediately after being attached to the magnetic tape device shown in Figure 17, the sub-loading completed state, and the loading completed state. 1...First tape case note, 2...;
Tape cassette of 2, 3...magnetic tape installation::'f, 4..., Usenote insertion slot, 5...
・・・・Tape case note ``A fj installation ii'f, 6・
...F holder, 7...C holder, 8...
...Mechanical chassis, 10...Movable light emitting element Unisoto, 11a...S side light receiving element, 1lb.
...T side light receiving element, 12 ... Holder drive motor, 21 ... Magnetic tape, 37 ...
- Sub loading post, 38... The loading arm, 39... Loading motor.

Claims (1)

[Claims] A first tape cassette having a predetermined size and shape and containing a magnetic tape, and a second tape cassette that is smaller than the first tape cassette and has a magnetic tape similar to the first tape cassette inside. a cassette insertion port for direct insertion; a first holding means for holding the first tape cassette inserted from the cassette insertion port; and a second holding means for holding the second tape cassette inserted from the cassette insertion port. a tape drive means for driving a magnetic tape in the first tape cassette or the second tape cassette; and a tape drive means for inserting the first tape cassette into the first holding means from the cassette insertion slot. a first moving means for reciprocating the first holding means between a first position and a second position for mounting the first tape cassette on the tape drive means; a third position where the movement of the first tape cassette is not obstructed; a fourth position where the second tape cassette is inserted into the second holding means from the cassette insertion slot; and a fourth position where the second tape cassette is inserted into the second holding means; selectively moving the second holding means to a fifth position where it is attached to the
and a second moving means for moving the second holding means to the third position when the first tape cassette is attached to or detached from the tape driving means by the first moving means.
a moving means, and at least a pair of tape detecting means for detecting a starting end or a terminal end of the first tape cassette and the second tape cassette, and at least one of the tape detecting means is connected to the tape driving means. A magnetic tape device characterized in that it is configured to operate in conjunction with the movement of the magnetic tape device.