JPH09270182A - Tape cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent that the dust is put into a cartridge body from a detecting hole which is provided at the cartridge body and detects advisability of writing in a magnetic tape. SOLUTION: A mis-deletion preventing member 16 is provided at one side of a cartridge body consisting of an upper half 1 and lower half 2 freely sliding, A detecting hole 33 which is opened at the other side of the cartridge body and detects advisability of writing in this magnetic tape is made freely opening/ closing. Partitions 36, 37, 38, 39, 40, 41 are formed over from a peripheral part of an opening of the detecting hole 33 at the time of opening the detecting hole 33 to an outer periphery part of a mis-deletion preventing piece 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge for data storage used as a backup for a computer or the like.

[0002]

2. Description of the Related Art For example, as a tape cartridge for data storage used as a backup for a computer or the like, as shown in FIG. 6, a tape main body 103 composed of an upper half 101 and a lower half 102 is provided.
A single tape reel 107 on which a magnetic tape 106 having a disc-shaped upper flange 104 and a lower flange 105 is wound is a reel spring 108 which is a coil spring.
According to the above, there is proposed that the lower half 102 is always biased and stored.

[0003] The tape reel 107 has an upper flange 1
04 and a lower flange 105, and the upper flange 104
The magnetic tape 106, to which the leader tape 109 is connected, is wound around the hub provided in the. The tape reel 107 has a ring-shaped bearing that is press-fitted and fixed in a circular recess formed in the central portion of the upper flange 104, and a reel rotation support shaft (not shown) is also attached to the bearing, so that the reel. It is designed to rotate around a rotation support shaft.

The tape reel 107 is always urged toward the lower half 102 by a reel spring 108 having one end contacting the inner surface 101a of the upper half 101 and the other end contacting the reel rotation support shaft. I have. The reel spring 108 is a compression coil spring having a cylindrical shape.

In this tape cartridge, a recording and / or reproducing apparatus (hereinafter simply referred to as a drive apparatus)
When not in use, the torsion coil spring 11
A pair of brake members 11 urged by 0,111
2 and 113, the tape reel 107 cannot be rotated. That is, the tape reel 107
Are gear portions 11 formed around the outer periphery of the upper flange 104.
In FIG. 4, the meshing portions 115 and 116 provided on the brake members 112 and 113 mesh with each other, so that rotation is impossible.

In the non-use state, the magnetic tape 106 is completely wound around the tape reel 107, and the leader tape 109 is
The hook 3 is engaged with a hook 117 provided on the side of the third side. Further, an opening for pulling out the magnetic tape 106 to the outside of the cartridge main body 103 is closed by an opening / closing lid 118 rotatably attached to the cartridge main body 103.

On the other hand, when the tape cartridge is mounted on the drive unit, the tape reel 107 is lifted to the central position of the cartridge body 103 against the urging force of the reel spring 108, and the brake members 112 and 113 are used. Is unlocked, and the tape reel 107 is made rotatable. Further, the opening / closing lid 118 is opened by lid opening / closing means provided on the drive device side. Further, the magnetic tape 106 is pulled out from the cartridge body 103 to the outside by a tape pulling means provided on the drive device side.

By the way, in this tape cartridge, an erroneous erasure prevention member 119 for preventing new information from being erroneously recorded on the magnetic tape 106 (erasing already recorded information) is provided with the above-mentioned opening / closing. It is provided on one side of the cartridge body 103 opposite to the lid 118 so as to be slidable in the arrow X direction in FIGS. 6 and 7. As shown in FIG. 6, the erroneous erasure prevention member 119 has a slide plate 120 slidably provided on one side surface of the cartridge body 103.

The slide plate 120 is provided with an erroneous erasure prevention piece 122 which is opened on the other side surface of the cartridge body 103 and faces a detection hole 121 for detecting whether or not writing on the magnetic tape is possible. Such erasure prevention piece 1
As shown in FIG. 8, reference numeral 22 denotes a position where the magnetic tape 106 can be written, a position where the detection hole 121 is closed (a position shown by a solid line), and a detection hole 121 where the magnetic tape 106 cannot be written. Is provided so as to extend over the position (the position indicated by the chain double-dashed line). The erroneous erasure prevention piece 122 is provided on the slide plate 120.
It is provided at the tip of the arm member 123 provided in the.

On the slide plate 120, a recordable position at which writing on the magnetic tape 106 is possible,
A positioning member 124 is provided for fixing the erroneous erasure prevention member 119 at a non-recordable position where writing on the magnetic tape 106 is impossible. The positioning member 124 is fixed to a recordable position and a non-recordable position by engaging with a cylindrical positioning protrusion 125 provided upright on the inner surface of the upper half 101.

By the way, when the erroneous erasure prevention member 119 is at the recordable position shown in FIG.
The detection hole 121 is blocked by 22.
For this reason, dust such as dust and dirt is not detected in the detection hole 12
1 does not enter the cartridge body 103.

[0012]

However, when the erroneous erasure prevention member 119 is in the unrecordable position shown in FIG. 10, the erroneous erasure prevention piece 122 is detected as indicated by the chain double-dashed line in FIG. Cartridge body 1 with hole 121 opened
It is provided at an inward position of 03. In this state,
As shown in FIGS. 8 and 9, although a guide member 126 for guiding the slide of the erroneous erasure prevention piece 122 is provided on the inner surface of the lower half 102, nothing is provided on the upper half 101 side. The dust easily enters the cartridge body 103 through the detection hole 121. Since such dust causes dropout and hinders recording and reproduction, it is necessary to prevent the dust from entering the cartridge body 103.

Therefore, an object of the present invention is to provide a tape cartridge capable of preventing dust from entering the cartridge body through a detection hole provided in the cartridge body for detecting whether or not writing on the magnetic tape is possible. Especially.

[0014]

SUMMARY OF THE INVENTION According to the present invention, a single tape reel, in which a magnetic tape having an upper flange and a lower flange is wound in a cartridge main body composed of an upper half and a lower half, is provided by a coil spring. The erroneous erasure prevention member is slidably provided on one side surface of the cartridge body, and is housed by being urged to the lower half side at all times. In a tape cartridge having a detection hole for opening / closing the magnetic tape, the detection hole being opened / closed on the other side of the magnetic tape, the opening / closing edge of the detection hole is used to open the detection hole. A tape cartridge having a partition formed over the outer peripheral edge of an erroneous erasure prevention piece, thereby achieving the above object. A.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a specific tape cartridge to which the present invention is applied will be described with reference to the drawings. In this embodiment, the present invention is applied to a tape cartridge used for data storage used as a backup of a computer.

FIG. 1 is an exploded perspective view of a tape cartridge.
2 is an enlarged plan view of an essential part showing a state in which the erroneous erasure prevention member is attached to the lower half, and FIG. 3 is an enlarged perspective view of an essential part of the lower half in a portion to which the erroneous erasure prevention member is attached, FIG.
2 is an enlarged cross-sectional view of the main part of the portion of the cartridge body to which the erroneous erasure prevention member is attached, taken along line BB in FIG.
FIG. 5 is an enlarged perspective view of a main part of the tape cartridge when the erroneous erasure prevention member is in a non-recordable state.

FIG. 1 shows a tape cartridge according to this embodiment.
As shown in FIG. 2, a single tape reel 7 on which a magnetic tape 6 having an upper flange 4 and a lower flange 5 is wound in a cartridge body 3 composed of an upper half 1 and a lower half 2.
Is a tape cartridge which is always urged toward the lower half 2 side by a reel spring 8 which is a coil spring and stored.

The tape cartridge of this embodiment will be described in more detail. As shown in FIG. 1, the upper half 1 is provided with a first brake member 9 and a second brake member 10 for preventing the tape reel 7 from rotating when not used in a drive device. ing.

The first brake member 9 has a comb-shaped meshing portion 12 that meshes with a gear portion 11 formed on the outer periphery of the upper flange 4, and is provided on the inner surface of the upper half 1 and is not shown. It is rotatably attached to the brake support shaft. Then, the first brake member 9
The meshing portion 12 is constantly urged in the direction meshing with the gear portion 11 by a first reel lock spring 13 formed of a torsion coil spring.

The second brake member 10 also has a comb-teeth-shaped meshing portion 14 that meshes with the gear portion 11 formed on the outer periphery of the upper flange 4, and is provided on the inner surface of the upper half 1 in the drawing. It is mounted rotatably on the brake support shaft. The second brake member 10 is urged by a second reel lock spring 15 also composed of a torsion coil spring in a direction in which the meshing portion 14 meshes with the gear portion 11.

Further, the upper half 1 is provided with an opening / closing lid 17 for opening and closing an opening for drawing the magnetic tape 6 outward from the cartridge body 3. The opening / closing lid 17 is configured to urge the door spring 18 formed of a torsion coil spring in a direction to always close the opening. Further, the opening / closing lid 17 is designed so as not to be inadvertently opened by a lid opening / closing lock mechanism (not shown) when not in use.

On the other hand, the lower half 2 is provided with a hook 20 for hooking the leader tape 19 connected to the end portion of the magnetic tape 6. This hook 20
Has a hook-shaped tip, and a leader tape 19
The leader tape 19 is accurately positioned by being inserted into and engaged with a notch (not shown) provided in the tape. When the leader tape 19 is positioned by the hook 20, the magnetic tape 6 can be reliably pulled out of the cartridge body 3 by the tape pull-out means provided on the drive device side.

Further, as shown in FIG. 1, the lower half 2 is formed with an opening 21 for exposing the tip end of a hub (not shown) protruding from the lower flange 5 to the outside. The opening 21 is a circular hole at the center of the lower half 2.

An erroneous erasure prevention member 16 is provided between the upper half 1 and the lower half 2 so as not to erroneously record information on the magnetic tape 6. The erroneous erasure prevention member 16 is slidably provided on one side surface of the cartridge body 3.

The tape reel 7 provided between the upper half 1 and the lower half 2 is provided integrally with the upper flange 4 and the lower flange 5 for adjusting the winding state of the magnetic tape 6, and the upper flange 4. And a hub around which the magnetic tape 6 is wound. The upper flange 4 is formed as a disk, and the outer peripheral edge of the upper flange 4 has a meshing portion 12 of the first brake member 9 and a second brake member 1.
The gear section 11 meshes with the 0 meshing section 14.

A circular concave portion 22 is formed at the center of the upper flange 4. Then, the recess 22
A disc 23 having a disc shape, which functions as a bearing when the tape reel 7 rotates, is fitted in the center portion of the tape reel 7. A ball 25 made of a metal material rotatably held on a reel rotation support shaft 24 that supports the rotation of the tape reel 7 comes into contact with the disk 23.

On the other hand, the lower flange 5 is formed as a disc having a circular fitting hole 26 at the center thereof, with the front end of the hub facing the hub, and the fitting hole 26 is fitted to the front end of the hub. By doing so, it is fixed to the hub. The tape reel 7 is accommodated between the upper half 1 and the lower half 2 fixed by screws 27.

In the tape cartridge constructed as described above, the tape reel 7 is urged toward the lower half 2 by the reel spring 8 when the tape cartridge is not mounted on the drive device and is not used. The tape reel 7 is in a non-rotatable state by the first brake member 9 and the second brake member 10. The lid 17 is closed by a lid lock mechanism, and the leader tape 9 is locked by the hook 20.

On the other hand, when the tape reel 7 is mounted on the drive device, the tape reel 7 is lifted to the center position of the cartridge body 3 against the urging force of the reel spring 8 and the brake members 9 and 10 The lock is released, and the tape reel 7 can be rotated. Then, the opening / closing lid 17 is opened by the lid opening / closing means provided on the drive device side, and the magnetic tape 6 is pulled out from the cartridge body 3 to the outside by the tape pulling means also provided on the drive device side.

Thus, in the tape cartridge of this embodiment, as shown in FIGS. 1 and 2, the erroneous erasure prevention member 16 includes a slide plate 28 slidably provided on one side surface of the cartridge body 3. , This slide plate 2
8 includes an erroneous erasure prevention piece 29 and a positioning member 30 for fixing the erroneous erasure prevention member 16 to a recordable position and a non-recordable position.

The slide plate 28 is formed as a plate-like member having a substantially rectangular shape in plan view, and as shown in FIG. 4, one side wall 1a of the upper half 1 and one side wall 2a of the lower half 2 and these one side wall 1a. , 2a and slidable guide pieces 1b, 2b provided opposite to each other. As shown in FIG. 5, the slide plate 28 is provided with an erroneous erasure prevention mark 3 provided on one side wall 1 a of the upper half 1.
A window portion 32 having a flat rectangular shape for exposing 1 to the outside is provided.

As shown in FIG. 2, the erroneous erasure prevention piece 29 opens and closes a detection hole 33, which is opened on the other side surface of the cartridge body 3 for detecting whether or not writing on the magnetic tape is possible, It is arranged to prevent erroneous recording of new information on the magnetic tape 6 (erasing the already recorded information). The erroneous erasure prevention piece 29 is formed in a rectangular shape that is large enough to close the detection hole 33, and is provided at the tip of an arm member 34 provided on the slide plate 28.

The erroneous erasure prevention piece 29 makes it possible to write on the magnetic tape 6 and the position at which the detection hole 33 is closed (the position shown by the solid line in FIG. 2) and the writing on the magnetic tape 6 are impossible. The position where the detection hole 33 is opened (see FIG.
The position indicated by the middle two-dot chain line).

The positioning member 30 is for fixing the erroneous erasure prevention member 16 at a recordable position and a non-recordable position, and is provided on the slide plate 28 as a projection having a sharp tip. . The positioning member 30 is fixed to a recordable position and a non-recordable position by engaging with a cylindrical positioning protrusion 35 provided upright on the inner surface of the upper half 1.

When the erroneous erasure prevention member 16 is fixed at the recordable position, the positioning protrusion 35 is engaged with one slope 30a provided at the tip of the positioning member 30, as shown in FIG. Further, when the erroneous erasure prevention member 16 is fixed to the non-recordable position, the other slope 30b provided at the tip of the positioning member 30.
The positioning protrusion 35 is engaged with the.

In the tape cartridge according to this embodiment, as shown in FIGS. 2 to 4, when the detection hole 33 is opened from the peripheral edge portion of the detection hole 33 (when the erroneous erasure prevention member 16 does not record data). Partition walls 36, 37, 38, 39, 40, 41 are formed along the outer peripheral edge of the erroneous erasure prevention piece 29 (when provided at a possible position).

More specifically, the erroneous erasure prevention piece 16 will be described.
In the region where the detection hole 33 moves from the closed position to the open position, the outer periphery of the detection hole 33 is entirely covered with partition walls 36, 37, 38, 39, 40, 41. That is, the detection hole 33 has the partition walls 36,
37, 38, 39, 40, 41 form a tunnel having a rectangular cross section.

Partition walls 36, 37 provided on the lower half 2
Reference numeral 38 denotes a first partition wall 36 provided so as to face one side surface 29a in the longitudinal direction of the erroneous erasure prevention piece 29 shown in FIG.
And both side surfaces 29 of the erasure prevention piece 29 in the short side direction.
Second partition walls 3 provided to face b and 29c, respectively.
It consists of 7,38. As shown in FIGS. 2 and 3, the first partition wall 36 is provided on the inner surface 2c of the lower half 2 as a rectangular projection having a flat upper end surface. The second partition walls 37 and 38 are formed as protrusions having a ridge shape on the upper end surface of the first partition wall 36.

Similarly, the partition wall 3 provided on the upper half 1
Reference numerals 9, 40, 41 denote a third partition wall 39 provided to face the other side surface 29d in the longitudinal direction of the erroneous erasure prevention piece 29 shown in FIG. 4, and both side surfaces 29b in the short side direction of the erasure prevention piece 29. 29c and fourth partition walls 40 and 41 provided to face each other. The third partition 39 is
Similar to the first partition wall 36, the upper half surface of the upper half 1 is formed as a rectangular protrusion having a flat upper end surface so as to protrude from the inner surface 1 c of the upper half 1. Then, the fourth partition walls 40, 41 have the second partition
The third partition wall 39 is formed on the upper end surface of the third partition wall 39 so as to face the partition walls 37 and 38 of FIG.

The partition wall 3 thus provided on the lower half 2
6, 37, 38 and partition walls 39, 4 provided on the upper half 1
As shown in FIG. 4, reference numerals 0 and 41 denote second partition walls 37 and 38 and fourth partition walls 40 and 40, which are provided at positions facing each other.
By making the tips of 41 abut against each other, the detection hole 33 is formed as a tunnel having a rectangular cross section from the peripheral edge of the opening to the outer peripheral edge of the erroneous erasure prevention piece 29 when the detection hole 33 is opened. .

Therefore, the erroneous erasure prevention piece 29 has the detection hole 3
Not only in the state in which the erroneous erasure prevention piece 29 is closed, but also in the state in which the erroneous erasure prevention piece 29 opens the detection hole 33, the erroneous erasure prevention is performed from the opening peripheral portion of the detection hole 33 when the detection hole 33 is opened. A partition wall 36 extending over the outer peripheral edge of the piece 29,
Since 37, 38, 39, 40, 41 are formed,
Dust will not enter the cassette body 3 through the detection hole 33.

[0042]

As is apparent from the above description, according to the present invention, dust is introduced into the cartridge body through the detection hole provided in the cartridge body for detecting whether or not writing to the magnetic tape is possible. It is possible to provide a tape cartridge that can be prevented from entering.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a tape cartridge to which the present invention is applied.

FIG. 2 is an enlarged plan view of an essential part showing a state in which an erroneous erasure prevention member is attached to the lower half of the tape cartridge to which the present invention is applied.

FIG. 3 is an enlarged perspective view of an essential part of a lower half in a portion to which an erroneous erasure prevention member is attached in the tape cartridge to which the present invention is applied.

FIG. 4 is an enlarged cross-sectional view of a main part of a portion of the tape cartridge to which the present invention is applied, where the erroneous erasure prevention member is attached to the cartridge body, taken along line BB in FIG.

FIG. 5 is an enlarged perspective view of a main part of the tape cartridge to which the present invention is applied, when the erroneous erasure prevention member is in a non-recordable state.

FIG. 6 is an exploded perspective view of a conventional tape cartridge.

FIG. 7 is an enlarged perspective view of a main part of a conventional tape cartridge when an erroneous erasure prevention member is fixed at a recordable position.

FIG. 8 is an enlarged plan view of an essential part showing a state where an erroneous erasure prevention member is attached to a lower half of a conventional tape cartridge.

FIG. 9 is an enlarged cross-sectional view of a main part of a conventional tape cartridge in which an erroneous erasure prevention member is attached to the cartridge body, taken along the line AA in FIG.

FIG. 10 is an enlarged perspective view of a main part of the conventional tape cartridge when the erroneous erasure prevention member is in a non-recordable state.

[Explanation of symbols]

 1 upper half 2 lower half 3 cartridge body 4 upper flange 5 lower flange 6 magnetic tape 7 tape reel 8 reel spring 16 erroneous erasure prevention member 28 slide plate 29 erroneous erasure prevention piece 30 positioning member 33 detection hole 36 first partition wall 37, 38 second partition 39 third partition 40, 41 fourth partition

Claims (1)

[Claims] 1. A single tape reel, in which a magnetic tape having an upper flange and a lower flange is wound, in a cartridge body composed of an upper half and a lower half, is constantly urged toward the lower half by a coil spring. It is stored as
An erroneous erasure prevention member is slidably provided on one side surface of the cartridge body, and writing to the magnetic tape opened on the other side surface of the cartridge body by an erroneous erasure prevention piece provided on the erroneous erasure prevention member. In a tape cartridge in which a detection hole for detecting the presence / absence of the above is openable / closable, a partition wall is formed from the opening peripheral edge portion of the detection hole to the outer peripheral edge portion of the erroneous erasure prevention piece when the detection hole is opened. A tape cartridge characterized by being used.