JPH0684249A - Cassette loading/unloading device for magnetic tape unit - Google Patents

Abstract

PURPOSE:To reduce the wrong loading of a cassette and to improve the operability of a magnetic tape unit. CONSTITUTION:This device is provided with a mechanism to move a cassette moving rack 7 in a cassette inserting direction, to move a slider opening/closing rack 6 and to open a slider 203 with a slider opening lever provided at this slider opening/closing rack 6 when a digital cassette 200 is inserted to a cassette holder 1. Thus, since a slider opening mechanism part 2 at a cassette holder 1 can be more reduced, the visible range of the cassette can be made wider and a user can clearly observe the label of the cassette loaded on the cassette holder 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog cassette which has an opening for inserting a magnetic head, which is normally open, and which is recorded and reproduced by an analog signal, and has substantially the same shape as that of the analog cassette. The present invention relates to a cassette attaching / detaching device of a magnetic tape device which is compatible with both digital cassettes for recording / reproducing by digital signals, in which a head insertion opening is covered with a movable slider.

[0002]

2. Description of the Related Art In recent years, with the spread of digital recording media typified by compact discs (CDs), digitization of audio devices has been progressing. The wave of this digitization is spreading to the magnetic tape device in which the recording / reproduction by the analog signal is the mainstream, but the magnetic tape device using such analog signal and the magnetic tape device using the digital signal. However, the current situation is that they are not compatible with each other and have not spread to the general public as much as a CD reproducing apparatus for reproducing a CD.

In response to such a situation, a magnetic tape device using a digital signal, which is compatible with a conventional magnetic tape device using an analog signal, is being developed, and both signals are recorded. -A magnetic tape device that can be played back has already been proposed.

As shown in FIGS. 16 and 17, an analog compact cassette tape (hereinafter referred to as C cassette) 100 for analog signals is used as a cassette tape for recording / reproducing with the above magnetic tape device. There is a digital compact cassette tape (hereinafter referred to as a D cassette) 200 for digital signals.

As shown in FIG. 16, the C cassette 100 has a magnetic tape 102 housed in a casing 101 composed of an upper surface portion 101a and a lower surface portion 101b as a cassette half. Since at least two tracks are formed on the magnetic tape 102, and recording / reproduction is performed on each track, for example, the recording side of the tracks on the upper surface 101a side is the A surface,
The recording side of the tracks on the lower surface portion 101b side is the B surface. In addition, the front surface portion 10 of the cassette housing 101
3, a head insertion opening 104 is provided, and pinch roller insertion openings 105, 105 are provided on both sides of the head insertion opening 104.
2 is always exposed. In addition, the head insertion opening 104 and the pinch roller insertion opening 105 of the upper surface portion 101a and the lower surface portion 101b of the cassette housing 101.
Trapezoidal protruding surfaces 106, 106 are formed in a portion corresponding to a portion extending to 105.

On the other hand, as shown in FIG. 17, the D cassette 200 has a magnetic tape (not shown) housed in a cassette housing 201 having substantially the same shape as the C cassette 100. The cassette housing 201 includes an upper surface portion 201a and a lower surface portion 201b, and a front surface portion 202 of the cassette housing 201 has a head insertion opening (not shown) and a pinch roller insertion opening (not shown). ) Is provided, and a sliding surface of a slider 203, which will be described later, for opening and closing the head insertion opening and the pinch roller insertion opening has a substantially triangular shape having a guide slope 204a and a locking surface 204b. A slider opening guide recess 204 is formed. However, as described above, the C cassette 100
While the head insertion opening 104 is always exposed, in the D cassette 200, when the D cassette 200 is not used, the front surface 202 provided with the head insertion opening except for a part thereof is a slider. It is covered with 203. That is, the D cassette 200 is greatly different from the C cassette 100 in that the D cassette 200 includes the slider 203.

This slider 203 is used for the cassette housing 20.
1 front part 202, top part 201a and bottom part 201b
It is made of a thin metal plate having a U-shaped cross section for partially covering, is provided slidably in the directions of arrows A and B, and is biased in the direction of B by a spring (not shown). When the slider 203 is on the arrow B direction side, the slider 203 closes the head insertion opening and the pinch roller insertion opening formed in the cassette housing 201. The slider opening guide recess 204 provided in the cassette housing 201 is also the slider 20.
It is designed to be covered by 3 except the end portion 204c. Further, the slider 203 is formed with a head inserting notch 203a corresponding to the head inserting opening and a pinch roller inserting notch 203b corresponding to the pinch roller inserting opening on the arrow A direction side. When the slider 203 is on the arrow A side, the head inserting notch 203a and the pinch roller inserting notch 2 are formed.
The opening for inserting the head and the opening for inserting the pinch roller are opened through 03b. At this time, the slider 203 moves in such a manner that an engaging pin 301a provided in a slider opening mechanism section, which will be described later, is engaged with a slider opening guide recess 204 provided in the cassette housing 201, and the engaging pin 301a is opened. This is done by moving along the guide recess 204.

Further, in such a magnetic tape device, for example, as shown in FIG. 18, a cassette attaching / detaching device 3 for attaching / detaching the above-mentioned C cassette 100 and D cassette 200.
00 is provided. This cassette attaching / detaching device 300
Is equipped with a cassette holder 305 for inserting a cassette and holding it at a recording / reproducing position.
A transparent acrylic plate or the like is used for the upper surface plate 305a of 05 so that the operator can easily discriminate the mounted cassette. The D cassette 20 is placed on the upper plate 305a.
There is provided a slider opening mechanism section for opening the slider 203 of No. 0.

The slider opening mechanism portion is composed of a slider opening lever 301 which is rotatable about a fulcrum 303 in the directions of arrows X and Y.
One end of 1 is pivotally supported by the fulcrum 303, and a spring 306 is attached so as to be constantly biased to rotate in the X direction. On the other hand, on the tip end side of the other end of the slider opening lever 301, an engagement pin 301a is hung so as to be inserted into an insertion hole 302 formed in a circular arc shape in the upper surface plate 305a around a fulcrum 303, Cassette holder 305
The engaging pin 301a is adapted to be engaged with the slider opening guide concave portion 204 of the D cassette 200 which is inserted into.

[0010]

By the way, a cassette recognition label for recording information recorded on the A side and B side of the magnetic tape is usually attached to the cassette, and the cassette holder 305 holds the cassette identification label. When wearing
The label is visible to the operator. In the C cassette 100, the label for recognizing the cassette is, for example, on the upper surface portion 101a of the C cassette 100 for writing information on the A surface, and on the lower surface of the C cassette 100 for writing information on the B surface. It is affixed to each section. On the other hand, since the cassette mounting surface of the D cassette 200 is determined in advance, when the D cassette 200 is mounted in the cassette holder 305, the label that describes the information of the A side and the B side must be attached so that it can be seen by the operator. Must be attached to the upper surface portion 201a of the D cassette 200. Therefore, if the amount of information recorded in the C cassette 100 and the D cassette 200 is the same, the amount written on the label attached to the upper surface 201a of the D cassette 200 is at least attached to the upper surface 101a of the C cassette 100. The label attached to the upper surface portion 201a of the D cassette 200 needs to be generally larger than the label attached to the upper surface portion 101a of the C cassette 100 because the amount is larger than that described in the label. That is, in the D cassette 200,
Since the information recorded on the A and B sides of the magnetic tape needs to be written on one label attached to the upper surface 201a of the D cassette 200, it is preferable that the size of the label is as large as possible. As shown in FIG. 17, the size is such that it can be attached to almost the entire area of the upper surface portion 201a of the D cassette 200 except for the portion where the slider 203 is provided.

However, in the cassette attaching / detaching device 300 of the magnetic tape device having the above structure, the slider opening mechanism portion is provided on the upper surface plate 305a of the cassette holder 305.
As shown in FIG. 18, since the fan-shaped portion 307, which is the rotation range of the slider opening lever 301 of the slider opening mechanism, makes a part of the mounted cassette invisible to the operator. Regarding the D cassette 200 to which a large label is attached, the fan-shaped portion 30
By 7, the visible range Z'of the cassette is narrowed and part of the described items cannot be seen. For this reason, it takes time to determine which cassette is being mounted, especially when the cassette is the D cassette 200.
When it is determined that the cassette is erroneously mounted, it takes time to replace it with the target cassette, resulting in a problem that the operability of the magnetic tape device is deteriorated.

Therefore, the present invention has been made in view of the above problems, and an object thereof is to improve the operability of the magnetic tape device by making it easier to see the label attached to the cassette in the mounted state of the cassette. It is an object of the present invention to provide a cassette attaching / detaching device of a magnetic tape device that improves the performance.

[0013]

According to a first aspect of the present invention, there is provided a cassette attaching / detaching device for a magnetic tape apparatus, wherein a first cassette having an opening for inserting a head or the like is always open and a front portion having an opening for inserting a head or the like. A slider that slides along the opening to open or close the opening for insertion of the head or the like,
It is possible to record / reproduce both a second cassette having a slider opening guide concave portion provided with a guide slope having a constant angle with respect to the front surface portion on the surface side, and mounting these first and second cassettes. In a cassette attaching / detaching device of a magnetic tape device having a cassette storage unit, a first moving unit that moves in the cassette insertion direction along with a movement of the cassette inserted in the cassette storage unit in the insertion direction, and the first moving unit. Is provided with a second moving means that moves in a direction orthogonal to the cassette insertion direction with the movement of the second cassette, and the second moving means has an engagement pin that engages with the slider opening guide recess of the second cassette. A slider opening lever is provided and the amount of movement of the first moving means and the second moving means is set based on the inclination of the guide slope of the slider opening guide recess. And it is characterized in and.

According to a second aspect of the present invention, there is provided a cassette attaching / detaching device of the magnetic tape device according to the first aspect, wherein the slider opening / closing lever rotates while the first cassette is inserted. It is characterized in that a sloped portion is provided at the mounting portion of the slider opening lever of the second moving means so that the engagement pin at the tip of the lever rises.

According to a third aspect of the present invention, there is provided a cassette attaching / detaching device for a magnetic tape device according to the first aspect, wherein the first and second moving means are coaxially and integrally provided. It is characterized in that it is interlocked by the first and second drive gears, and a toothless portion is provided in the second drive gear of the second moving means to limit the movement of the second moving means.

[0016]

According to the structure of claim 1, since the first moving means and the second moving means are provided orthogonally to each other, the ratio of the moving amount of the first moving means to the moving amount of the second moving means is the slider. The direction in which the opening lever moves is determined, and this direction is the inclination of the guide slope of the slider opening guide recess. From this, if the inclination of the guide slope of the slider opening guide recess is determined, the amount of movement of the first moving means and the second moving means can be determined based on this inclination, so that the minimum amount of movement is sufficient. The amount of movement of the first moving means and the second moving means can be determined. In this way, the amount of movement of the first moving means and the second moving means can be minimized. Moreover, since the slider opening mechanism is provided orthogonally to the first moving means and the second moving means as described above, the slider opening mechanism can be arranged outside the cassette attaching / detaching part. As a result, the visible range of the cassette can be widened.

According to the second aspect of the present invention, the inclined portion is attached to the mounting portion of the slider opening lever of the second moving means so that the engaging pin at the tip of the slider opening lever rises while rotating with the insertion of the first cassette. With the provision of the above, when the first cassette is inserted, the engagement pin of the slider opening lever comes into contact with the front face of the first cassette, and when the first cassette is further inserted, the engagement pin of the slider opening lever is inserted into the front face of the first cassette. While contacting the portion, the second moving means rotates along a sloped portion provided on the mounting portion of the slider opening lever of the second moving means, and as the slider opening lever rotates, the engaging pin rises. The pin does not prevent the insertion of the first cassette, so that the first cassette can be mounted smoothly.

According to the third aspect of the present invention, the first and second moving means are interlocked by the first and second drive gears provided coaxially, respectively, so that the second moving means moves along with the second moving gear. The moving means can be moved. Further, since the second drive gear of the second moving means is provided with the toothless portion, if the second moving means is in contact with the toothless portion, the second moving means will move even if the first moving means moves. The means do not move. In this way, since the first moving means and the second moving means can be driven in an interlocking manner, the slider can be moved by a simple mechanism.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
The explanation is based on the following.

The magnetic tape device according to this embodiment is shown in FIG.
1, an analog compact cassette (hereinafter referred to as C cassette) 100 as a first cassette for recording / reproducing analog signals which has been conventionally used, and FIG.
7, a digital compact cassette (hereinafter, D) for recording / reproducing a digital signal as a second cassette.
Recording for both cassettes (referred to as cassettes) 200
It can be regenerated.

The C cassette 100 has a magnetic tape 102 housed in a cassette housing 101 as shown in FIG. Since at least two tracks are formed on the magnetic tape 102 and recording / reproducing is performed for each track, for example, the recording side by the track on the upper surface 101a side as the cassette half is A Surface, lower surface 1 as cassette half
The recording side of the track on the 01b side is the B side. In addition, the cassette housing 101 of the C cassette 100
An opening 104 for inserting a head is provided on the front surface 103, and openings 105, 105 for inserting a pinch roller are provided on both sides of the opening 104 for inserting a head so that the magnetic tape 102 is always exposed. It has become. Further, the upper surface portion 101a and the lower surface portion 1 of the cassette housing 101
Trapezoidal protruding surfaces 106 and 106 are formed in a portion corresponding to the head insertion opening 104 and the pinch roller insertion opening 105 and 105 of 01b.
Further, reel holes 107, 107 are provided at the left and right symmetrical positions near the center of the cassette housing 101 so as to penetrate the cassette housing 101 in the vertical direction.
In the cassette housing 101 in
A reel (not shown) around which is wound is arranged.
Further, in the front part on both side surfaces of the cassette housing 101, conventionally, protruding parts 108, 108 are provided which are provided for the operator to easily grip the C cassette 100.

On the other hand, as shown in FIG. 17, the D cassette 200 has a magnetic tape (not shown) housed in the cassette housing 201 as in the C cassette 100.
The width and depth dimensions of the cassette housing 201 are substantially the same as those of the C cassette 100.
However, the thickness of the C cassette 100 is thicker than that of the C cassette 100 and thinner than the thickness of the protruding faces 106 and 106 of the C cassette 100 in the vertical direction.

Further, the cassette housing 201 does not have the projecting surfaces 106 and 106 and the projecting portions 108 and 108 in the cassette housing 101, and the first recesses 205 and 205 are provided at the portions corresponding to the projecting portions 108 and 108. Are formed. Further, the portion of the cassette housing 201 corresponding to the reel holes 107 of the cassette housing 101 is not a through hole, but a second recess 206 formed only on the lower surface side.
・ It is 206. Further, the front face portion 202 of the cassette housing 201 is provided with a head insertion opening and a pinch roller insertion opening which are not shown. Further, a sliding surface of a slider 203, which will be described later, for opening and closing the head insertion opening and the pinch roller insertion opening has a substantially triangular slider opening guide recess having a slant guide surface 204a and a locking surface 204b. 204 is formed. However, as described above, in the C cassette 100, the head insertion opening 104 is always exposed, while D
In the cassette 200, when the D cassette 200 is not used, the front surface portion 202 provided with the head insertion opening is covered by the slider 203 except for a part thereof. That is, the D cassette 200 is greatly different from the C cassette 100 in that the D cassette 200 includes the slider 203.

This slider 203 is used for the cassette housing 20.
1 front part 202, top part 201a and bottom part 201b
It is made of a thin metal plate having a U-shaped cross section for partially covering and is slidable in the directions of arrows A and B. The slider 203 is biased in the direction of arrow B by a spring or the like (not shown). When the slider 203 is in the direction of the arrow B, the head insertion opening and the pinch roller insertion opening are closed by the slider 203 so that the magnetic tape and pads (not shown) in the cassette housing 201 are protected. Further, the slider opening guide concave portion 204 is covered by the slider 203 except for the end portion 204c on the B direction side.

Further, the slider 203 is provided with a head inserting notch 203a corresponding to the head inserting opening and a pinch roller inserting notch 203b corresponding to the pinch roller inserting opening on the arrow A direction side. When the slider 203 is at the end on the arrow A direction side, the cassette housing 20 is inserted through the head inserting notch 203a and the pinch roller inserting notch 203b of the slider 205.
The head insertion opening and the pinch roller insertion opening 1 are opened. Slider 20 at this time
3 is moved by engaging an engagement pin 5a (FIG. 1) provided in a slider opening mechanism section, which will be described later, with a slider opening guide recess 204 provided in the cassette housing 201.
a is moved along the slider opening guide concave portion 204.

The first recesses 205 provided on both sides of the cassette housing 201 are generally called storage grips, and are for holding the D cassette 200 at a recordable / reproducible position.

A cassette attaching / detaching device for attaching / detaching the C cassette 100 and the D cassette 200 to / from the magnetic tape device will be described below.

As shown in FIG. 1, the cassette attaching / detaching device has a cassette holder 1 as a cassette accommodating means for holding and accommodating a cassette, and the cassette holder 1 also accommodates a cassette accommodating cassette. Part 1a
And a slider opening mechanism section 2 as a second moving means for opening and closing the slider 203 of the D cassette 200, and a cassette moving mechanism section 3 as a first moving means for moving with the movement of the accommodated cassette. And a rack drive gear section 4 for driving the slider opening mechanism section 2 and the cassette moving mechanism section 3 in an interlocking manner.

Further, as shown in FIG. 3 (b), the upper surface of the cassette housing portion 1a allows the operator to see the surface of the cassette, that is, for the operator to easily recognize the installed cassette. A transparent member such as an acrylic plate is used.

The slider opening mechanism section 2 is shown in FIG.
As shown in FIG. 5, the slider 203 provided in the D cassette 200 is moved.
And a slider opening / closing rack 6 for moving the slider opening lever 5 in the directions of arrows A and B. The slider opening lever 5 has a slider opening / closing rack 6 as shown in FIG.
The slider opening / closing rack 6 is pivotally supported on the end side of the slider opening / closing rack 6 by a support point 5b that is a side end, and is rotatable in the directions of arrows G and H around the support point 5b. Further, the other end of the slider opening lever 5 has an engaging pin 5a for engaging with the slider opening guide recess 204 of the D cassette 200.
Is drooping. The slider opening lever 5 is
By contacting the slider opening lever rotation stopper 6a provided on the slider opening / closing rack 6, the slider opening / closing rack 6 cannot be further rotated in the arrow H direction from the contact position.

The slider opening / closing rack 6 is driven along with the movement of a cassette moving rack 7 which will be described later, and an intermittent spur gear 9 which will be described later is provided on the arrow A side thereof. A first rack gear 6b that meshes with is provided. On the other hand, on the arrow B direction side of the slider opening / closing rack 6, as shown in FIG. 2, when the slider opening lever 5 rotates in the arrow G direction, a slope portion 6c having an inclination angle θ so as to rise by a height h. Is provided. In this way, the slider opening lever 5 is rotated and raised by the height h, so that the insertion of the C cassette 100 is not blocked, and the head insertion opening 104 of the front face portion 102 of the C cassette 100 is not blocked. Magnetic tape exposed from 1
It does not come into contact with 03. The slider opening / closing rack 6 is biased in the direction of arrow A by a spring or the like (not shown).

The rising height h of the slider opening lever 5 at the slope 6c is determined by the protruding surface 1 of the C cassette 100.
It is set according to the thickness of 06.106, and the inclination angle θ and the shape of the sloped portion 6c are not particularly limited as long as the height h can be obtained.

The cassette moving mechanism 3 is moved along with the movement of the cassette inserted in the cassette holder 1a, and the flat side of a rack drive gear 4 to be described later is located on the arrow D direction side. A cassette moving rack 7 provided with a second rack gear 7a that meshes with the gear 8 and a locking portion 7b for locking the inserted cassette at a predetermined position are provided. When the cassette locked by the locking portion 7b further moves in the arrow D direction, the cassette moving rack 7 moves in the arrow D direction as the cassette moves. Since the slider opening / closing rack 6 is biased in the direction of arrow A as described above, the cassette moving rack 7 that is driven in conjunction with this is also biased in the direction of arrow C.

Further, the rack drive gear portion 4 has a structure shown in FIG.
2, a spur gear 8 meshing with the second rack gear 7a of the cassette moving rack 7 and an intermittent spur gear 9 meshing with the first rack gear 6b of the slider opening / closing rack 6 are provided. The spur gear 8 and the intermittent spur gear 9 are coaxially and integrally provided so as to be interlocked with each other. Moreover, the intermittent spur gear 9 is provided with a toothless portion 9a, and the toothless portion 9a and the first rack gear 6b contact each other to prevent the slider opening / closing rack 6 from moving. . That is, the amount of movement of the slider opening / closing rack 6 is controlled by providing the gear with a toothless portion.

Here, the gear ratio between the spur gear 8 and the intermittent spur gear 9 is calculated as follows. First, the ratio of the moving amount of the slider opening / closing rack 6 and the moving amount of the cassette moving rack 7 is obtained. The amount of movement of the slider opening / closing rack 6 and the amount of movement of the cassette moving rack 7 are as shown in FIG.
The amount of movement of the engagement pin 5a in the slider opening guide recess 204 of the D cassette 200 in the direction of arrow B is'a 'and the amount of movement in the direction of arrow C is'b'.
The ratio of the moving amount of the slider opening / closing rack 6 to the moving amount of the cassette moving rack 7 is
Movement amount of = a / b.

Next, the gear ratio between the spur gear 8 and the intermittent spur gear 9 is calculated from the moving amount ratio of the slider opening / closing rack 6 and the moving amount of the cassette moving rack 7. Since the movement amount of the slider opening / closing rack 6 is equal to the rotation movement amount of the intermittent spur gear 9 and the movement amount of the cassette movement rack 7 is equal to the rotation movement amount of the spur gear 8, the spur gear 8 and the intermittent spur gear 8 are the same. The gear ratio with 9 is intermittent spur gear 9 / spur gear 8 = a / b.

Therefore, the moving amount ratio of the slider open / close rack 6 and the moving amount of the cassette moving rack 7 is determined according to the angle of the guide slope 204a of the slider opening guide recess 204 with respect to the front face 202. And the minimum movement amount of the cassette moving rack 7 can be determined.

The attaching / detaching operation of the C cassette 100 and the D cassette 200 in the above configuration will be described below.

First, the attaching / detaching operation of the D cassette 200 will be described with reference to FIGS. When the D cassette 200 is inserted into the cassette holder 1, first,
As shown in FIGS. 3A and 3B and FIG. 4, the end of the slider opening guide recess 204 in which the engaging pin 5a of the slider opening lever 5 is exposed at the end of the slider 203 of the D cassette 200. It abuts the portion 204c. At this time, the slider opening lever 5, the slider opening / closing rack 6, and the cassette moving rack 7 stand by in a non-moving state, the D cassette 200 is stored in the cassette storing portion 1a, and the locking portion provided in the cassette moving rack 7 is held. It is in a state of being locked by 7b.

Then, when the D cassette 200 is moved in the direction of arrow D, the cassette moving rack 7 moves in the direction of arrow D and the spur gear 8 rotates counterclockwise. At this time, the intermittent spur gear 9 meshed with the slider opening / closing rack 6 provided coaxially with the spur gear 8 rotates counterclockwise like the spur gear 8, and along with this rotation, the slider opening / closing rack 6 Moves in the direction of arrow B. Then, the engagement pin 5a waiting at the position of the end portion 204c of the slider opening guide concave portion 204 is moved to the slider opening guide concave portion 2 of the D cassette 200.
Start moving along 04.

When the first rack gear 6b of the slider opening / closing rack 6 comes into contact with the toothless portion 9a of the intermittent spur gear 9,
As shown in FIGS. 5A and 5B and FIG. 6, the movement of the slider opening / closing rack 6 in the arrow B direction is stopped, and the opening of the slider 203 is completed. Then, as shown in FIG. 5B, the head insertion opening of the D cassette 200 is exposed from the head insertion notch 203 a of the slider 203.

On the other hand, the cassette moving rack 7 meshing with the spur gear 8 further moves in the direction of arrow D. But,
Since the slider opening / closing rack 6 is in contact with the toothless portion 9a of the intermittent spur gear 9 as shown in FIGS. Only the movement of the cassette 200 to a predetermined position in the arrow D direction is performed. At this time, the D cassette 200 has the first recess 205.
-Holded by the engagement of 205 and a cassette lock member (not shown). When the D cassette 200 is moved to the predetermined position in this way, a recording / reproducing member such as a magnetic head is inserted into the opened head insertion opening and abuts on the exposed magnetic tape 209 to perform recording / reproducing.
Playback is possible.

Next, the attaching / detaching operation of the C cassette 100 will be described with reference to FIGS. 9 to 14. When the C cassette 100 is inserted into the cassette holder 1, first, as shown in FIGS. 9A, 9B and 10, the engaging pin 5a of the slider opening lever 5 is moved to the C cassette 100.
Abutting on the pinch roller insertion opening 105 of
The cassette is locked by the cassette locking portion 7b of the cassette moving rack.

Then, the C cassette 100 is further indicated by an arrow D.
11A and 11B and FIG.
As shown in 2, the cassette moving rack 7 also moves in the direction of arrow D, and the spur gear 8 rotates counterclockwise. As the spur gear 8 rotates, the intermittent spur gear 9 also rotates counterclockwise, and the slider opening / closing rack 6 moves in the arrow B direction. At this time, the slider opening lever 5 also rotates counterclockwise along the sloped portion 6c provided on the end side of the slider opening / closing rack 6 shown in FIG.

When the first rack gear 6b of the slider opening / closing rack 6 comes into contact with the toothless portion 9a of the intermittent spur gear 9,
The movement of the slider opening / closing rack 6 in the arrow B direction is stopped. However, the slider opening lever 5 is
Since 0 moves in the direction of arrow D, it further rotates along the gradient portion 6c. Finally, when the C cassette 100 is moved to a predetermined position, that is, a recording / reproducing position of the magnetic tape, a recording / reproducing device such as a magnetic head is inserted into the head inserting opening 104 and the pinch roller inserting opening 105.105. By contacting the exposed magnetic tape 102, recording / playback becomes possible.

As described above, the C cassettes 100 and D
Although the mounting operation of the cassette 200 has been described,
Finally, the above-mentioned C cassette 100 and D cassette 200
The taking-out operation of will be described below.

First, operation such as recording / reproducing is stopped by operating an operation button (not shown). Then, the cassette holder 1 is driven from the recording / reproducing position to the cassette attaching / detaching position by operating a cassette holder take-out switch or the like (not shown). At this time,
The cassette lock member releases the lock of the cassette held at the predetermined position, and the cassette moving rack 7 becomes movable in the arrow C direction. Then, the operator takes out the cassette stored in the cassette storage portion 1a.

Then, the cassette moving rack 7 originally urged in the direction of arrow C starts moving in the direction of arrow C, and the spur gear 8 rotates clockwise accordingly. As the spur gear 8 rotates, the intermittent spur gear 9 also rotates clockwise, and the slider opening / closing rack 6 moves in the direction of arrow A.
Then, when the movement of the cassette moving rack 7 is stopped by the cassette moving rack locking member (not shown) provided in the cassette holder 1, the slider opening / closing rack 6 is also stopped, and the cassette mounting standby state is resumed.

By the way, usually, a cassette recognition label is attached to the cassette for recording information recorded on the A and B sides of the magnetic tape, and when the cassette is attached to the cassette holder 1, the label is attached. Is visible to the operator. In the C cassette 100, the label for recognizing the cassette is, for example, on the upper surface portion 101a of the C cassette 100 for writing information on the A surface, and on the B cassette.
The lower surface portion 10 of the C cassette 100 is used to record information on the surface.
1b is attached respectively. On the other hand, D cassette 20
When the D cassette 200 is mounted on the cassette holder 1, the cassette mounting surface is predetermined in 0, and in order to attach the label indicating the information on the A side and the B side so that the operator can see, the label must be attached to the D cassette 200. Upper surface portion 201a
Must be attached to. Therefore, if the amount of information recorded in the C cassette 100 and the D cassette 200 is the same, the amount written on the label attached to the upper surface 201a of the D cassette 200 is at least attached to the upper surface 101a of the C cassette 100. The label attached to the upper surface portion 201a of the D cassette 200 is generally larger than the label attached to the upper surface portion 101a of the C cassette 100 because it is larger than the amount described in the label. That is, in the D cassette 200, the information recorded on the A and B sides of the magnetic tape needs to be written on a single label attached to the upper surface 201a of the D cassette 200, and therefore the size of the label is as large as possible. It is preferable that the slider 2 on the upper surface 201a of the cassette 200 is usually used as shown in FIG.
The size is such that it can be attached to almost the entire area except for the area where 03 is disposed.

However, in the conventional cassette attaching / detaching device, the visible range of the cassette surface is narrowed by the slider opening mechanism provided in the D cassette 200 as shown in FIG. The determination as to whether or not the cassette is the target cassette may be delayed, which deteriorates the operability of the magnetic tape device having the cassette attaching / detaching device as described above.

However, according to this embodiment, as shown in FIG. 1, the inclination of the guide slope 204a of the slider opening guide recess 204 of the D cassette 200 is defined as the ratio of the movement amount of the slider opening / closing rack 6 and the cassette moving rack 7. Therefore, by setting the minimum value of the moving amount of the slider opening / closing rack 6 and the cassette moving rack 7 based on this moving amount ratio, the moving amount of each member of the slider opening mechanism 2 can be minimized. . Therefore, the slider opening mechanism 2
Since the structure can be made simpler, the slider opening mechanism portion 2 can be provided so as to widen the cassette visible range of the upper surface plate of the cassette holder 1a, and as a result, as shown in FIG. The visible range Z is shown in FIG.
It is possible to widen the cassette visible range Z ′ in the cassette attaching / detaching device of the conventional magnetic tape device shown in FIG.

Further, since the slider opening lever 5 ascends while rotating along the inclined portion 6c provided on the slider opening / closing rack 6, the engaging pin 5a provided on the slider opening lever 5 also rises accordingly. . Therefore, even when the C cassette 100 is mounted, the C
The cassette 100 can be installed smoothly without being blocked.

Further, by providing a toothless portion 9a on the intermittent spur gear 9 which meshes with the slider opening / closing rack 6, the spur gear 8 driven by the movement of the cassette moving rack 7 in the direction of arrow D rotates. However, since the movement of the slider opening / closing rack 6 in the direction of the arrow B can be stopped, the movement amount of the slider opening / closing rack 6 and the cassette moving rack 7 can be easily adjusted.

[0054]

As described above, the cassette attaching / detaching device of the magnetic tape device according to the first aspect of the present invention includes the first cassette in which the opening for inserting the head or the like is always open and the opening for inserting the head or the like. A slider opening guide groove having a slider that slides along the front surface to open or close the opening for inserting the head or the like, and has a guide slope having a constant angle with respect to the front surface. In the cassette attaching / detaching device of the magnetic tape device, which is capable of recording / reproducing both the second cassette provided in the above, and has the cassette storing part for mounting these first and second cassettes, A first moving unit that moves in the cassette inserting direction as the cassette moves in the inserting direction, and a first moving unit that moves in a direction orthogonal to the cassette inserting direction as the first moving unit moves. Two moving means are provided, and the second moving means is provided with a slider opening lever having an engaging pin that engages with the slider opening guide concave portion of the second cassette, and the first moving means and the second moving means. The amount of movement with respect to the moving means is set based on the inclination of the guide slope of the slider opening guide recess.

Therefore, the amount of movement of the first moving means and the second moving means can be adjusted by the guide slope of the slider opening guide recess provided in the second cassette, so that the second cassette is recorded / reproduced. It is possible to minimize the moving mechanism for moving the slider to a lower position, to simplify the slider opening mechanism, and as a result, to show a wider range of cassette travel. .

As described above, the cassette attaching / detaching device of the magnetic tape device according to the second aspect of the present invention is the cassette attaching / detaching device of the magnetic tape device according to the first aspect, wherein the slider opening lever is accompanied by the insertion of the first cassette. A sloped portion is provided in the mounting portion of the slider opening lever of the second moving means so that the engaging pin at the tip of the slider opening lever moves up while rotating.

Therefore, when the first cassette is mounted, the slider for opening the slider of the second cassette rises if it is rotated along the inclined portion provided on the second moving means, so that insertion of the cassette is not prevented. The effect is that it can be installed smoothly.

As described above, the cassette attaching / detaching device of the magnetic tape device according to the third aspect of the present invention is the cassette attaching / detaching device of the magnetic tape device according to the first aspect. The first and second drive gears that are integrally provided are interlocked with each other, and a toothless portion is provided in the second drive gear of the second moving means to limit the movement of the second moving means. The configuration is

Therefore, even if the opening of the slider of the second cassette is completed by the second moving means contacting the toothless portion of the second drive gear, the second cassette can be further moved in the cassette inserting direction. Therefore, there is an effect that the movement amounts of the first and second moving means can be controlled according to the position where the slider opening mechanism is provided.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a cassette attaching / detaching device of a magnetic tape device according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part in a direction A of a slider opening / closing rack provided in the cassette attaching / detaching device of the magnetic tape device shown in FIG.

3A and 3B are explanatory views showing a mounting operation of a digital cassette which is a second cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 1, where FIG. 3A is a plan view and FIG.
Is a front view.

FIG. 4 is a side view showing a mounting operation of a digital cassette which is a second cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 3;

5A and 5B are explanatory views showing a mounting operation of a digital cassette which is a second cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 1, where FIG. 5A is a plan view and FIG.
Is a front view.

6 is a side view showing a mounting operation of a digital cassette which is a second cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 5;

7A and 7B are explanatory views showing a mounting operation of a digital cassette which is a second cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 1, where FIG. 7A is a plan view and FIG.
Is a front view.

8 is a side view showing a mounting operation of a digital cassette which is a second cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 7. FIG.

9A and 9B are explanatory views showing a mounting operation of an analog cassette which is a first cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 1, in which FIG. 9A is a plan view and FIG. It is a figure.

10 is a side view showing a mounting operation of an analog cassette which is a first cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 9;

11A and 11B are explanatory views showing a mounting operation of the analog cassette which is the first cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 1, where FIG. 11A is a plan view and FIG.
Is a front view.

12 is a side view showing a mounting operation of an analog cassette which is a first cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG.

13A and 13B are explanatory views showing a mounting operation of the analog cassette which is the first cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG. 1, where FIG. 13A is a plan view and FIG.
Is a front view.

14 is a side view showing a mounting operation of an analog cassette which is a first cassette of the cassette attaching / detaching device of the magnetic tape device shown in FIG.

15 is a plan view showing a state in which a digital cassette, which is a second cassette, is attached to the cassette attaching / detaching device of the magnetic tape device of FIG.

16 is a perspective view of an analog cassette, which is a first cassette mounted in the cassette attaching / detaching device of the magnetic tape device of FIG. 1. FIG.

17 is a perspective view of a digital cassette, which is a second cassette mounted in the cassette attaching / detaching device of the magnetic tape device of FIG. 1. FIG.

FIG. 18 is a plan view showing a state where a digital cassette is attached to a cassette attaching / detaching device of a conventional magnetic tape device.

[Explanation of symbols]

 1 Cassette Holder 1a Cassette Storage Section 2 Slider Opening Mechanism Section (First Moving Member) 3 Cassette Moving Mechanism Section (Second Moving Member) 5 Slider Opening Lever 5a Engagement Pin 8 Spur Gear (First Drive Gear) 9 Intermittent Spur Gear (Second drive gear) 100 Analog cassette (first cassette) 104 Head insertion opening 200 Digital cassette (second cassette) 202 Front part 203 Slider 204 Slider opening guide recess 204a Guide slope

Claims (3)

[Claims] 1. A first cassette in which an opening for inserting a head or the like is always open, and a first cassette having an opening for inserting a head or the like slides to open or close the opening for inserting a head or the like. It is possible to record and reproduce both the first cassette and the second cassette having a slider opening guide concave portion provided on the front surface side and having a slider bevel having a certain angle with respect to the front surface. In a cassette attaching / detaching device of a magnetic tape device having a cassette housing part for mounting a second cassette, a first moving means for moving in the cassette inserting direction along with a movement of the cassette inserted in the cassette housing part in the inserting direction. And a second moving unit that moves in a direction orthogonal to the cassette insertion direction with the movement of the first moving unit. The second moving unit is provided with the slider of the second cassette. A slider opening lever having an engaging pin that engages with the opening guide groove is provided, and the amount of movement of the first moving means and the second moving means is set based on the inclination of the guide slope of the slider opening guide recess. A cassette attaching / detaching device for a magnetic tape device, which is characterized in that 2. The slider opening lever of the second moving means is inclined so that the engaging pin at the tip of the slider opening lever rises while the slider opening lever rotates as the first cassette is inserted. The cassette attaching / detaching device of the magnetic tape device according to claim 1, wherein a portion is provided. 3. The first and second moving means are interlocked by first and second drive gears which are coaxially and integrally provided, respectively, and a toothless portion is provided on a second drive gear of the second moving means. 2. The cassette attaching / detaching device of the magnetic tape device according to claim 1, wherein the second moving means is restricted from moving.