JPH0714340A - Data cartridge - Google Patents

Abstract

PURPOSE:To prevent a data cartridge using a wide magnetic tape from being erroneously inserted into the existing recording and reproducing device developed for the existing data cartridge using a narrow magnetic tape in reference to the data cartridge insertible into a recording and reproducing device from its front panel side. CONSTITUTION:The data cartridge equipped with a cartridge case 1 consisting of a base plate 2 and a cover 3, a magnetic tape fitted travelably in the cartridge case 1 and a driving belt for traveling the magnetic tape is provided with this magnetic tape formed wider than the magnetic tape of the existing data cartridge in width. The upper surface of one end part of this base plate 2 is provided with an erroneous insertion preventing protruding part 41 to be abutted against side wall of a cartridge inserting part of a recording and reproducing device for the existing data cartridge, thus preventing this data cartridge from being inserted into this inserting part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data cartridge most suitable for high density recording (backup memory) of CPU data, for example.

[0002]

2. Description of the Related Art Conventionally, as a data cartridge for recording CPU data at a high density, for example, Japanese Patent Publication No.
Japanese Patent No. 14976 is known.

As shown in FIGS. 10 to 13, a conventional data cartridge of this type (hereinafter, referred to as a first data cartridge) C1 has a base plate made of an aluminum plate or the like in which the cartridge case 1 is a lower half. It is formed by screwing a thin box-shaped upper cover 3 which is an upper half formed of a synthetic resin having a light-transmitting property. A pair of left and right tape reels 4 and 4 with upper and lower flanges formed of synthetic resin are rotatably supported on the base plate 2, and a magnetic tape 5 is wound around the pair of left and right tape reels 4 and 4. It has been turned. This magnetic tape 5 is attached to the base plate 2 3
It is guided by two flanged tape guides 6 ... 6 and hung along the inside of the front wall 3a of the upper cover 3. Further, the drive roller 7 and the pair of left and right corner rollers 8 and 8 formed of synthetic resin at substantially the center of the front edge 2a on the base plate 2 and the left and right corners on the rear edge 2b side are rotatable. It is pivotally supported. An elastic drive belt 9 formed of a rubber belt or the like is wound between the drive roller 7 and the pair of left and right corner rollers 8 and 8 in a substantially T shape with a strong tension. Then, a pair of left and right drive portions 9a, 9a between the drive roller 7 of the drive belt 9 and both corner rollers 8, 8 are provided.
Magnetic tape 5 wound around both tape reels 4 and 4
Are pressed against the outer peripheries of the pair of left and right tape winding portions 5a, 5a.

A pair of left and right tape reels 4, 4 and three rollers 7, 8, 8 are provided on the base plate 2 and are vertically planted by press fitting or the like. It is rotatably supported by. Then, inside the running path of the magnetic tape 5, the optical detection mirror 1 at the tape end is provided.
2 is attached.

The left and right side walls 3b, 3 of the upper cover 3
On the outer surface of b, a pair of left and right groove-like portions 13, 13 cut in parallel from the front wall 3a are formed in parallel. The left and right end portions 2c of the base plate 2 and the groove portion 1 on the front end side of the 2c.
A pair of left and right positioning notches 14 and 14 are formed at positions corresponding to the insides of 3 and 13.

Further, a notch having a substantially trapezoidal shape is formed on one side of the drive roller 7 on the side of the front edge 2a of the base plate 2 so as to extend over the base plate 2 and the ceiling wall 3c of the upper cover 3. A head insertion hole 15 is formed, and this head insertion hole 1
An opening / closing door 16 for opening / closing 5 is rotatably attached between the base plate 2 and the ceiling wall 3c of the upper cover 3 via a fulcrum shaft 17.

The drive roller 7 has a large-diameter roller portion 7b above the small-diameter roller portion 7a around which the drive belt 9 is wound.
Is integrally molded, and the front side of the large-diameter roller portion 7b is a roller insertion hole 18 formed in the front wall 3a of the upper cover 3.
It is exposed inside.

A recording / reproducing apparatus for recording / reproducing the first data cartridge C1 of this type is shown in FIG.
The first data cartridge C1 as shown in FIG.
A front face insertion type recording / reproducing device D1 that is inserted from the a side in the direction of the arrow a is widely used.

This front insertion type recording / reproducing apparatus D1
Has a cartridge insertion portion (space) 24 formed horizontally in a cartridge insertion opening 23 formed in the front panel 22, and has a pair of left and right base plate insertion grooves 25a, 25a on its left and right side walls 24a, 24a. And the fixed block portions 25b located on these insertion grooves 25a, 25a,
25b are formed horizontally and in parallel. Then, as shown in FIG. 13, a pair of left and right cartridge front-rear position regulating portions 2 are provided at the inner ends of the pair of left and right base plate insertion grooves 25a, 25a on the arrow a direction side which is the cartridge insertion direction.
6, 26 are integrally formed with the left and right side walls 24a, 24a. In addition, a pair of left and right base plate insertion grooves 25a, 25
27. The three cartridge vertical position restricting portions 27 ... 27 formed of downward convex portions are integrally formed at a total of three locations on the downward upper side surface of a. A pair of left and right cartridge positioning rollers 28, 28 are attached to the pair of left and right base plate insertion grooves 25a, 25a near the pair of left and right cartridge front-rear position restricting portions 26, 26.

The pair of left and right cartridge positioning rollers 28, 28 are arranged in a pair of left and right notches 29, 29 formed in the left and right side walls 24a, 24a. Then, a pair of left and right base plate insertion grooves 25a, 25
One end of a pair of left and right leaf springs 30, 30 parallel to a is fixed to the lower surfaces of the left and right side walls 24a, 24a, and the other end of the pair of left and right leaf springs 30, 30 has a pair of left and right cartridge positioning rollers 28, 28 is rotatably supported. Then, the pair of left and right leaf springs 30 and 30 make a pair of left and right cartridge positioning rollers 28 and 2
8 is moved and urged in the upward arrow b direction. A leaf spring 31 is attached to the center of the bottom wall 24b of the cartridge insertion portion 24 at a position deviated to the cartridge insertion opening 23 side to bias the cartridge 1 in the direction of arrow b.

Then, as shown in FIGS. 12 to 14, the front edge 2a of the base plate 2 of the first data cartridge C1.
The first data cartridge C1 is inserted from the cartridge insertion port 23 of the recording / reproducing apparatus D1 into the cartridge insertion portion 24 in the direction of arrow a.

At this time, the left and right end portions 2c, 2 of the base plate 2 are
c is inserted into the pair of left and right base plate insertion grooves 25a, 25a from the direction of the arrow a, and the base plate 2 is inserted on the leaf spring 31 at the central portion. The free end portion 16a of 16 is brought into contact with one side wall 24a, and the opening / closing door 16 is twisted about the fulcrum shaft 17 in the direction of arrow c about the fulcrum shaft 17 as shown by the chain line in FIG. The door is opened.

Then, as shown in FIGS. 13 and 14,
The first data cartridge C1 is the cartridge insertion portion 2
When the first data cartridge C1 is completely inserted into the cartridge 4 from the direction of the arrow a, the first data cartridge C1 is positioned with high precision.

That is, as shown in FIG. 14 (A), first, the left and right ends of the front edge 2a of the base plate 2 are brought into contact with the pair of left and right cartridge front and rear position restricting portions 26, 26 in the direction of arrow a. At about the same time when the insertion of the data cartridge C1 is stopped, the pair of left and right cartridge positioning rollers 28, 28 are inserted into the pair of left and right positioning notches 14, 14 of the base plate 2 by the pair of left and right leaf springs 30, 30. It is engaged from below in the direction of arrow b. Then, the pair of left and right cartridge positioning rollers 28, 28 press the front ends 14a of the pair of left and right positioning notches 14, 14 diagonally upward and upward in the direction of arrow d.

As a result, the pair of left and right positioning rollers 2
The entire first data cartridge C1 is urged to move in both directions of the arrows a and b in the cartridge insertion portion 24 by the leaf springs 8 and 28 and the central leaf spring 31.
The front end edge 2a of the base plate 2 is elastically pressed by the pair of left and right cartridge front and rear position restricting portions 26, 26 from the direction of the arrow a, and at the same time, the left and right end portions 2c, 2c of the base plate 2 have three cartridge vertical position restricting portions 27 ... The first data cartridge C1 is elastically pressed by the arrow 27 in the direction of the arrow b, and the first data cartridge C1 is positioned in the cartridge insertion portion 24 with high accuracy. Then, a pair of left and right cartridge positioning rollers 28, 28
Thus, the first data cartridge C1 is locked in the cartridge insertion portion 24.

Then, the first data cartridge C
12, the magnetic head 32 and the magnetic tape drive roller 33 mounted on the recording / reproducing device D1 side are respectively inserted into the magnetic head insertion holes 15 as shown in FIG.
And the magnetic head 32 and the drive roller 33 are relatively inserted into the roller insertion hole 18 from the direction of the arrow a ', and are pressed onto the large-diameter roller portion 7b of the magnetic tape 5 and the drive roller 7. The magnetic tape drive roller 33 is formed of a rubber roller or the like.

Then, the completion of the insertion of the first data cartridge C1 is detected by the cartridge-in switch 34. And the first record from the CPU,
In response to the reproduction command signal, as shown in FIG. 12, the drive roller 7 is rotationally driven by the magnetic tape drive motor via the magnetic tape drive roller 33 in the direction of arrow e, for example.
The drive belt 9 is rotationally driven in the direction of arrow f, and both drive units 9
a and 9a drive both tape reels 4 to rotate in the direction of arrow f via both tape winding portions 5a and 5a, and the magnetic tape 5 travels in the direction of arrow g at a high speed of 25 to 120 inch / sec, thereby The head 32 records and reproduces CPU data on the magnetic tape 5.

By the way, as the conventional first data cartridge C1 of this type, two types of cartridges, a small cartridge (hereinafter referred to as S type) and a large cartridge (hereinafter referred to as L type), are standardized. Both the S and L type cartridges have a tape width W ₁ of the magnetic tape 5 as shown in parts (A) and (B) of FIG.
Was standardized to a narrow width of 1/4 inch.

Incidentally, as shown in FIG. 11, in the case of the S type, the dimensions of the width X in the left-right direction, the depth Y in the front-rear direction, and the thickness Z of the first data cartridge C1 of this type are as follows:
X = 80.98 mm, Y = 61.1 mm, Z = 15.0
mm standardized, and for L type, X = 15
The specifications were standardized to be 2.4 mm, Y = 101.6 mm, and Z = 17.1 mm.

As described above, the conventional first data cartridge C1 has a problem that the recording capacity of the magnetic tape 5 is small because the tape width W ₁ of the magnetic tape 5 is as small as 1/4 inch. It was

Therefore, as shown in the portion (C) of FIG. 15, the tape width W ₂ of the magnetic tape is changed without changing the outer diameter dimensions of the width X, the depth Y and the thickness Z of the first cartridge 1. It is conceivable to increase the recording capacity of the magnetic tape 5 by enlarging it to a wide width such as 8 inches.

At this time, in relation to the base plate 2 of the first data cartridge C1 being formed of an aluminum plate or the like, as shown in parts (A) and (C) of FIG. Even if the tape width of _No. 5 is expanded from W ₁ to W ₂ , the height of these magnetic tapes 5 must be the lower end reference P _1, and the upper end 5c of the magnetic tape 5 expanded to the width W ₂ has the width W _2. W ₂ -W for the upper end 5c of the magnetic tape 5 of ₁
By a height H ₁ corresponding to ₁ it would be biased upward.

On the other hand, as shown in parts (A), (B), and (C) of FIG. 15, the mounting height of the magnetic head 32 in the recording / reproducing apparatus D ₁ also depends on the upper limit position P ₂ and the lower limit position. P ₃
There is a variation in the height H ₂ between and.

[0024]

Therefore, a small width (1/4
Inch) Current 1st using W ₁ magnetic tape 5
When a new second data cartridge using the wide (8 mm) W ₂ magnetic tape 5 is erroneously inserted into the above-mentioned current recording / reproducing apparatus D1 developed for recording / reproducing the data cartridge C1 of In particular, as shown in part (C) of FIG. 15, when the mounting height of the magnetic head 32 is lowered to the lower limit position P ₃ , the upper end of the magnetic head 32 which is relatively pressure-bonded from the direction of the arrow a ₁ Edge 32
To the upper end 5c of the magnetic tape 5 in its wide W ₂ from a lies off upwards, that would wounded by bending the upper end 5c of the wide W ₂ by the upper end edge 32a of the magnetic head 32, lethal There is a problem that it will be damaged.

The present invention has been made in order to solve the above problems, and in a data cartridge which can be inserted into the recording / reproducing apparatus from the front side, a data cartridge using a wide magnetic tape has a small magnetic width. It is an object of the present invention to provide a data cartridge capable of preventing erroneous insertion into a current recording / reproducing device developed for a current data cartridge using a tape.

[0026]

According to a first aspect of the present invention, there is provided a cartridge case constituted by a base plate and an upper cover, a magnetic tape movably mounted in the cartridge case, and the magnetic tape is run. A data cartridge having a drive belt and formed to be wider than the width of the magnetic tape of the first data cartridge, which is based on the width of the magnetic tape, and a recording / reproduction for the first data cartridge on the base plate. A protrusion for preventing erroneous insertion is provided that abuts on the side wall of the cartridge insertion portion of the apparatus and prevents insertion into the insertion portion.

According to a second aspect of the present invention, in the data cartridge according to the first aspect, the protrusion for preventing erroneous insertion is provided on at least one of the left and right ends of the base plate, and from the front edge side to the rear edge side. It is formed by implanting a pin at a position displaced (retracted) by a predetermined amount.

[0028]

According to the data cartridge of the present invention, when the data cartridge is inserted into the recording / reproducing apparatus for the first data cartridge having a narrow magnetic tape width, a protrusion for preventing erroneous insertion provided on the outer surface of the side wall of the upper cover. The portion abuts on the side wall of the cartridge insertion portion of the recording / reproducing apparatus and prevents the portion from being mounted in the cartridge insertion portion.

The data cartridge according to the second aspect is inserted into the cartridge insertion portion of the recording / reproducing apparatus for the first data cartridge up to the position of the pin as the convex portion for preventing erroneous insertion. Then, when the data cartridge is inserted up to the position of the pin, the pin abuts the side wall of the cartridge insertion portion, and prevents the data cartridge from being inserted into the cartridge insertion portion any more.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. The same components as those in FIGS. 10 to 15 are designated by the same reference numerals, and duplicate description will be omitted.

1 and 2, the tape width W ₂ is, for example, 8 mm.
FIG. 2 is a perspective view and an exploded perspective view of a second data cartridge C2, which is a new data cartridge using the magnetic tape 5 having an increased recording capacity, that is, the data cartridge of the present invention. The outer diameter dimensions X, Y, and Z of the second data cartridge C2 are those of the current data cartridge using the magnetic tape 5 having the tape width W ₁ shown in FIG. 11 of 1/4 inch. The data cartridge C1 of No. 1 has the same configuration.

A pair of left and right groove portions 13, 13 are provided on the outer surfaces of the left and right side walls 3b, 3b of the upper cover 3.

As shown in FIGS. 3 to 5, the groove portions 13 and 13 have a height H ₁ = 8.4 mm from the position of the base plate 2 on the outer surfaces of the left and right side walls 3b and 3b. Front wall 3a
Is formed by providing a concave portion having a length L ₁ = 48.41 mm from the side wall and a depth G ₁ = 3.56 mm from the side wall 3 b.

When the cartridge case 1 is inserted into the cartridge insertion portion 24 of the recording / reproducing apparatus D1 for the first disc cartridge, one of the left and right ends of the base plate 2 is A side wall of the insertion portion 24,
More specifically, a protrusion 41 for preventing erroneous insertion is provided that abuts on the fixed block portion 25b and prevents the cartridge case 1 from being erroneously inserted into the cartridge insertion portion 24.

As shown in FIG. 3, the protrusion 41 for preventing erroneous insertion is located at a position L ₂ = 21.84 mm away from the front edge 2a of the base plate 2 toward the rear edge 2b, and L ₃ = from one side edge 2d of the base plate 2 toward the other side edge 2e
It is formed by implanting a metal pin having a diameter φ = 1.58 mm at a position separated by 1.6 mm.

The pin as the convex portion 41 for preventing erroneous insertion is formed to have a height H ₂ = 3.6 mm, and is substantially formed in the groove portion 13 provided on one side wall 3b of the upper cover 3. It is located in the center.

As shown in FIG. 7, the height H ₁ of the groove portion 13 is such that the base plate insertion groove 25a of the recording / reproducing apparatus D1.
Is higher than the height H ₃ of the fixed block portion 25b at the upper part of the.

Further, the height H ₂ of the pin as the convex portion 41 for preventing the erroneous insertion is higher than the height H ₄ of the base plate insertion groove 25a.

Therefore, the second data cartridge C2
Is inserted into the cartridge insertion portion 24 from the cartridge insertion opening 23 of the recording / reproducing device D1, the fixed block portion 25b is introduced into the groove portion 13.

Then, the second data cartridge C
2 is about L ₂ = 21.84 m in which the pin as the convex portion 41 for preventing erroneous insertion contacts the fixed block portion 25 b.
It is inserted into the recording / reproducing apparatus D1 up to the position of m.

Then, as shown in FIGS. 8 to 9, when the pin as the convex portion 41 for preventing erroneous insertion comes into contact with the fixed block portion 25b, the pin acts as a stopper and the second The data cartridge C2 is
The second data cartridge C is prevented from being inserted.
2 is a recording / reproducing apparatus D for the first data cartridge.
It is prevented from being attached to 1.

In the embodiment shown in the drawings, a pin serving as a convex portion 41 for preventing erroneous insertion is provided at one of the left and right ends 2c, 2c of the base plate 2. It may be provided at both left and right ends.

Further, the second data cartridge C2 is inserted into the recording / reproducing apparatus D1 by changing the length L ₂ from the pin as the convex portion 41 for preventing erroneous insertion to the front edge 2a of the base plate 2. You can adjust the amount that you can.

The pin serving as the convex portion 41 for preventing incorrect insertion is
Along the front edge 2a of the base plate 2, that is, the front edge 2a
If they are provided flush with each other, it is possible to prevent the second data cartridge C2 from being inserted into the recording / reproducing apparatus D1 at all.

[0045]

The data cartridge of the present invention has the following effects.

(1) A data cartridge according to claim 1 is
The erroneous insertion into the current recording / reproducing apparatus used for the data cartridges having different magnetic tape widths is surely prevented by the projections provided on the base plate for preventing erroneous insertion, and the data cartridge of the present invention is erroneously inserted. It is possible to prevent the magnetic tape from being damaged.

(2) In the data cartridge of claim 2,
Since the protrusion for preventing erroneous insertion is formed by the pin, the tape reel 4, the driving roller 7 or the corner roller 8,
When the pins for attaching 8 are planted, they can be planted at the same time as the planting of these pins, without requiring a drastic change in the planting die.

Further, since the pin as the convex portion for preventing erroneous insertion is provided at the position deviated by the predetermined amount from the front end edge of the base plate to the rear end edge, from the position of the pin to the front wall of the upper cover. It is possible to make the recording / reproducing apparatus hold the data cartridge in a state in which the part (1) is inserted in the existing recording / reproducing apparatus and a part of the data cartridge is inserted in the recording / reproducing apparatus.

Accordingly, even if the data cartridge is released from the hand when it is erroneously inserted, it is possible to prevent the data cartridge from falling off the recording / reproducing apparatus and damaging the data cartridge.

[Brief description of drawings]

FIG. 1 is a perspective view of a data cartridge.

FIG. 2 is an exploded perspective view of a data cartridge.

FIG. 3 is a partially cutaway plan view of the data cartridge.

FIG. 4 is a side view of the data cartridge.

FIG. 5 is a front view of the data cartridge.

FIG. 6 is a partially cutaway plan view of a data cartridge and a recording / reproducing apparatus.

FIG. 7 is a partially cutaway side view of a data cartridge and a recording / reproducing device.

FIG. 8 is a partially cutaway plan view showing a state where erroneous insertion is prevented.

FIG. 9 is a partially cutaway side view showing a state where erroneous insertion is prevented.

FIG. 10 is an exploded perspective view of a current data cartridge.

FIG. 11 is a perspective view of a current data cartridge.

FIG. 12 is a partially cutaway plan view of a current data cartridge.

FIG. 13 is a partially cutaway plan view showing a state in which a current data cartridge is inserted into a recording / reproducing apparatus.

14A is a cross-sectional view taken along the line AA of FIG. (B)
Is a cross-sectional view taken along the line BB of FIG. (C) is CC of FIG.
FIG.

FIG. 15 is an explanatory diagram showing a positional relationship between magnetic tapes having different widths and a magnetic head of a recording / reproducing apparatus.

[Explanation of symbols]

 C1 ... First data cartridge C2 ... Second data cartridge D1 ... Recording / reproducing apparatus 1 ... Cartridge case 2 ... Base plate 3 ... Top cover 3b ... Side wall of top cover 5 ... Magnetic tape 9 ... Drive belt 24 ... Cartridge insertion section (Space) 24a ... Side wall 25b ... Fixed block part 41 ... Convex part for preventing erroneous insertion

Claims (2)

[Claims] 1. A width of the magnetic tape, comprising: a cartridge case composed of a base plate and an upper cover; a magnetic tape movably accommodated in the cartridge case; and a drive belt for moving the magnetic tape. In the data cartridge formed to be wider than the width of the magnetic tape of the reference data cartridge, the base plate contacts the side wall of the cartridge insertion portion of the recording / reproducing apparatus for the reference data cartridge, A data cartridge characterized by having a convex portion for preventing erroneous insertion that prevents insertion into the portion. 2. The data cartridge according to claim 1, wherein the protrusion for preventing erroneous insertion is at least one end of the left and right ends of the base plate and is biased by a predetermined amount from the front edge toward the rear edge. A data cartridge formed by implanting pins at the position where it is positioned.