JP3239477B2 - Data cartridge - Google Patents

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, for example, high-density recording (backup memory) of CPU data.

[0002]

2. Description of the Related Art Conventionally, as a data cartridge for recording data of a CPU at a high density (backup memory), for example, Japanese Patent Publication No. 52-14976 is known.

A conventional data cartridge of this type is shown in FIG.
As shown in FIG. 8, the cartridge 1 is a thin box-shaped upper cover which is an upper half formed of a synthetic resin having a light transmitting property on a base plate 2 made of an aluminum plate or a synthetic resin plate which is a lower half. 3 is formed by screwing or the like. On the base plate 2, a pair of left and right flanged tape reels 4 formed of a synthetic resin.
Are rotatably supported, and a magnetic tape 5 as a tape is wound around these two tape reels 4. The magnetic tape 5 is guided by three tape guides 6 with flanges attached to the base plate 2, and is stretched along the inside of the front wall 3 a of the upper cover 3. A drive roller 7 and a pair of left and right corner rollers 8 formed of a synthetic resin are rotatably supported at substantially the center of the front edge on the base plate 2 and the left and right corners on the rear edge side. The drive roller 7 and both corner rollers 8
The drive belt 9 having elasticity formed by a rubber belt or the like is wound in a substantially T-shape with strong tension. A pair of left and right driving portions 9a between the driving roller 7 and both corner rollers 8 of the driving belt 9 are provided on the outer periphery of a pair of left and right tape winding portions 5a of the magnetic tape 5 wound around the two tape reels 4. Is pressed against.

The tape reel 4 and the three rollers 7 and 8 are provided with a center hole 1 in the outer periphery of a total of five support shafts 10 made of metal or the like vertically mounted on the base plate 2 by press fitting or the like.
1 and rotatably pivoted. A mirror 12 for detecting light at the end of the tape is mounted inside the running path of the magnetic tape 5.

The tape reels 4 are formed of ABS resin or the like , and have upper and lower flanges 4a and 4b formed thereon. And the upper flange 4
The pivot 4c is integrally formed at the upper center of the center a.
A hub 4d is integrally formed at the upper center of the lower flange, and a cylindrical boss 4e is integrally formed at the center of the hub 4d. The three rollers 7 and 8 are also formed of ABS resin or the like , and their outer peripheral surfaces have a substantially drum-shaped belt winding surface for stabilizing the running height of the drive belt 9. 7a and 8a are integrally formed. A large-diameter roller portion 7b is integrally formed at the upper end of the drive roller 7,
At the center of these rollers 7 and 8 are cylindrical bosses 7c and 8
b is integrally formed. Upper and lower flanges 6 for regulating the running height of the magnetic tape 5 are provided above and below the tape guide 6.
a and 6b are integrally formed.

The magnetic tape 5 is mounted on both tape reels 4.
Is wound around the outer periphery of the hub 4d between the upper and lower flanges 4a and 4b of the tape guide 6 and the upper and lower flanges 6a and 6b of the three tape guides 6.
It is configured to be guided and traveled between. Further, the drive belt 9 is wound around the outer circumference of the substantially drum-shaped belt winding surfaces 7a, 8a of the three rollers 7, 8, and the running height of the drive belt 9 is reduced by these belt winding surfaces 7a, 8a. It is configured to be stable. In this case, it is necessary to the center P ₁ of the magnetic tape 5 and the drive belt 9 coincide with each other.

A pair of left and right groove portions 13 cut in parallel from the front wall 3a is formed outside the left and right side walls 3b of the upper cover 3 in parallel.
A pair of left and right positioning notches 14 are formed at the front end sides of both left and right end portions 2a of the base plate 2 therein.

Next, as shown in FIG. 4, when the data cartridge is mounted on the recording / reproducing apparatus, a notch formed on one side of the driving roller 7 on the front edge side of the base plate 2 and the upper cover 3. An opening / closing door 18 attached between the base plate 2 and the upper cover 3 so as to open and close the portion 17 is opened in the direction of arrow a as shown by a dashed line, and the magnetic head 19 on the recording / reproducing apparatus side is cut out. 17 is inserted from the direction of arrow b into contact with the magnetic tape 5. At the same time, a motor roller 21 such as a rubber roller which is driven to rotate by a motor (not shown) on the recording / reproducing apparatus side has an arrow in an opening 20 formed in front of the drive roller 7 on the front wall 3a of the upper cover 3. c
And the motor roller 21 is pressed against the outer periphery of the large-diameter roller portion 7b formed integrally with the upper portion of the belt winding surface 7a of the drive roller 7. When the drive roller 7 is driven to rotate in the direction of arrow d by the motor roller 21 and the drive belt 9 is driven to rotate in the direction of arrow e, the two tape winding sections 5a are driven by the two drive sections 9a.
, The two tape reels 4 are driven to rotate in the direction of arrow e, and the magnetic tape 5 is moved 25 to 120 inch / sec in the direction of arrow f.
At a high speed, and the magnetic head 15 records and reproduces the data of the CPU on the magnetic tape 5.

Conventionally, as shown in FIGS. 7 and 8, a pivot 4c at the upper center of both tape reels 4 is attached to the lower surface 3d of the ceiling wall 3c of the upper cover 3 against the elasticity of the upper flange 4a. , The lower ends of the bosses 4 e of the tape reels 4 are elastically brought into contact with the upper surface 2 b of the base plate 2. In addition, the pivot 4c is the lower surface 3
It is positioned in a small-diameter cylindrical positioning rib 23 integrally formed with d. Also, the ceiling wall 3 of the upper cover 3
By pressing the upper ends of the bosses 7c and 8b of the drive roller 7 and the corner rollers 24 downward from the outer periphery of the support shaft 10 by three cylindrical roller pressing ribs 24 having a small height integrally formed on the lower surface 3d of the supporting member 10c. The lower ends of the bosses 7 c and 8 b of these rollers 7 and 8 are in contact with the upper surface 2 b of the base plate 2.

Therefore, the two tape reels 4 and the three rollers 7 and 8 are deviated to the lower side of the space height H between the base plate 2 of the cartridge 1 and the ceiling wall 3c of the upper cover 3, and The space height H cannot be used effectively at all, and the dimension A ₁ between the upper and lower flanges 4 a and 4 b of both tape reels 4 that regulate the tape width W ₁ of the magnetic tape 5 and the upper edge 5 b of the magnetic tape 5 height a ₂ of the large-diameter roller portion 7b of the upper end of the interfering driving roller 7 was very small.

As a result, conventionally, the magnetic tape 5 having a large tape width W ₁ cannot be used, and the tape width W ₁ of the conventionally usable magnetic tape 5 is _１ ／ inch.

By the way, two kinds of cartridges, a small cartridge (hereinafter referred to as S type) and a large cartridge (hereinafter referred to as L type), are standardized as this kind of data cartridge. cartridges, tape width W ₁ of the magnetic tape 5 have been standardized unified to 1/4 inch.

By the way, as shown in FIG. 6, a width X in the left-right direction and a depth Y in the front-rear direction of this kind of data cartridge.
And in the case of the S type, X = 80.9
8 mm, Y = 61.1 mm, Z = 15.0 mm are standardized. In case of L type, X = 152.4 mm,
The standard was unified to Y = 11.6 mm and Z = 17.1 mm.

[0014]

However, in the conventional data cartridge, the tape width W ₁ of the magnetic tape 5 is _１ ／.
Since there were only inches, there was a problem that the recording capacity was small.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a data cartridge capable of increasing the width of a magnetic tape without increasing the thickness of the cartridge. The purpose is.

[0016]

Means for Solving the Problems] data cartridges of the present invention for achieving the above object, a plate-shaped base plate and the box
And a top flange rotatably supported in the cartridge.
A pair of tape reels having a single drive roller and a pair of corner rollers, and the magnetic tape wound around the said pair of tape reels, wound substantially T shape between the drive roller and the corner rollers, in the data cartridge and a drive belt driven by the drive rollers to form a pair of driving portions in a state where the upper SL is pressed against the outer periphery of the magnetic tape winding portion of the pair of tape reels, said pair of tape reels and among the above single driving roller and the pair of corner rollers, at least on
Each upper flange of the serial pair of tape reels intruded into each recess corresponding formed on the lower surface of the ceiling wall of the upper cover, the upper
By enlarging the MakiSohaba the serial pair of tape reels, without increasing the thickness of the upper Symbol cartridge, it is an enlarged view of the tape width of the magnetic tape which is wound around the pair of tape reels. At this time, it is preferable to increase the tape width of the magnetic tape from 1/4 inch to 8 mm.

[0017]

The data cartridge of the present invention constructed as described above has a pair of tape reels, one drive roller and
Of fine pair of corner rollers, since so as to enter into the recesses forming the respective upper flange of at least a pair of tape reels on the lower surface of the ceiling wall of the upper cover of the cartridge, expanding the thickness of the cartridge Not one
Each upper flange of the pair of tape reels is
The dimension between the upper and lower flanges of a pair of tape reels can be increased by the height corresponding to the height that enters each recess on the lower surface.
You.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a data cartridge to which the present invention is applied will be described below with reference to FIGS. The same components as those in FIGS. 4 to 8 are denoted by the same reference numerals, and the description will not be repeated.

As shown in FIGS. 1 to 3, this data cartridge has a ceiling wall 3 c of an upper cover 3 of the cartridge 1.
In the lower surface 3d, the outer diameter of the pair of right and left tape reels 4, one of the driving rollers 7, each of the position immediately above the pair of left and right corner rollers 8, these two tape reels 4 and 3 (b) over La 7,8 Recesses 26, 27, 28, such as larger circles
Is formed.

Then, the upper flange 4 of both tape reels 4
c into the two concave portions 26, and the pivot 4c at the upper center is moved to the bottom surface 2 of the concave portion 26 by the elasticity of the upper flange 4a.
6a is elastically pressed from below. In addition,
Positioning ribs 23 are provided at the center of the bottom surface 26a of both recesses 26.
Are integrally formed.

The large-diameter roller portion 7b at the upper end of the driving roller 7 and the upper ends of the two corner rollers 8 are formed into three concave portions 27,
28, and are formed integrally with the center of the bottom surfaces 27a, 28a of these recesses 27, 28.
4, the bosses 7c, 8b of these three rollers 7, 8
Is pressed downward from the outer periphery of the support shaft 10.

As a result, the space height H between the base plate 2 in the cartridge 1 and the ceiling wall 3c of the upper cover 3 can be effectively used, and the thickness Z, width X, and depth of the cartridge 1 can be effectively used. be set exactly to the conventional same Y, upper and lower flanges 4a of both tape reels 4 for restricting the tape width W ₂ of the magnetic tape 5, interferes driven over edge 5b of the dimensions B ₁ and the magnetic tape 5 between 4b the upper end of the roller 7 of the large-diameter roller portion 7b the height B ₂ can be greatly expanded.

As a result, according to this data cartridge, the tape width W ₂ of the magnetic tape 5 is reduced from 1/4 inch to 8
It could be expanded to millimeters and used unifiedly for S and L type cartridges.

Then, the tape width W ₂ of the magnetic tape 5 is set to 1
By expanding from / 4 inch to 8 millimeters, the recording capacity could be increased by about 1.25 times even if the tape length of the magnetic tape 5 was the same.

Since the tape width W ₂ of the magnetic tape 5 is increased, the belt winding surface 7 of the three rollers 7, 8 is increased.
a, 8a must be higher in accordance with the center P ₁ of the magnetic tape 5, also, three upper and lower flanges 6a of the tape guides 6, 6b between dimensions must be enlarged.

As described above, one embodiment of the present invention has been described.
The present invention is not limited to the embodiments described above, and various modifications can be made based on the technical idea of the present invention.

[0027]

The data cartridge device of the present invention having the above-described structure has the following effects.

A pair of tape reels and one drive roller
And the thickness of the cartridge is such that each upper flange of at least one pair of tape reels of the pair of corner rollers is inserted into each recess formed on the lower surface of the ceiling wall of the cartridge upper cover. Without expanding the pair
The upper flange of each tape reel is below the ceiling wall of the upper cover
By a height equivalent to entering the respective recess surface, Ru can expand the upper and lower flanges dimension between the pair of tape reels
Because it was Unishi, without increasing the thickness of the cartridge, Ru can expand the tape width of the magnetic tape to be wound around a pair of tape reels to 8 mm such as ¼ inch or the like. Therefore, the recording capacity of the magnetic tape can be increased by about 1.25 times without increasing the length of the magnetic tape, and a large capacity cartridge can be provided.

Even though the cartridge is a large-capacity cartridge, the thickness of the cartridge can be set to the same value as the conventional one, so that recording and / or reproduction of the data cartridge can be performed without any improvement of the conventional recording / reproducing apparatus.

[Brief description of the drawings]

FIG. 1 is a sectional side view of a data cartridge according to an embodiment of the present invention, taken along line AA of FIG.

FIG. 2 is a sectional side view taken along the line BB in FIG. 3;

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

FIG. 4 is a partially cutaway plan view of a conventional data cartridge.

FIG. 5 is an exploded perspective view of a conventional data cartridge.

FIG. 6 is a perspective view of a conventional data cartridge.

FIG. 7 is a sectional view taken along the line CC of FIG. 4;

FIG. 8 is a sectional view taken along the line DD in FIG. 4;

[Explanation of symbols]

Reference Signs List 1 cartridge 2 base plate 2b upper surface of base plate 3 upper cover 3c ceiling wall of upper cover 3d lower surface of ceiling wall of upper cover 4 tape reel 4a, 4b upper and lower flanges of tape reel 4c pivot of tape reel 5 magnetic tape 5a of magnetic tape Tape winding portion 7 Drive roller 7a Drive roller belt winding surface 7b Drive roller large diameter roller portion 8 Corner roller 8a Corner roller belt winding surface 9 Drive belt 9a Drive belt drive portion 10 Support shaft 23 Positioning rib 24 Roller holding ribs 26, 27, 28 Recess 26a, 27a, 28a Bottom of recess W ₁ 1/4 inch tape width of magnetic tape W ₂ 8 mm tape width of magnetic tape

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 23/087 502

Claims (2)

(57) [Claims] 1. A cartridge comprising a plate-shaped base plate and a box-shaped upper cover, and an upper flange rotatably supported in the cartridge.
A pair of tape reels having a single drive roller and a pair of corner rollers, and the magnetic tape wound around the said pair of tape reels, wound substantially T shape between the drive roller and the corner rollers in the data cartridge having a drive belt driven by the drive rollers to form a pair of driving portions while being pressed against the outer periphery of the magnetic tape winding portion of the upper Symbol pair of tape reels, said pair of tape of reel and the one drive roller and the pair of corner rollers, allowed to enter the respective upper flange of at least the pair of tape reels within each recess corresponding formed on the lower surface of the ceiling wall of the upper cover, the pair
The Rukoto to expand the MakiSohaba tape reel without increasing the thickness of the upper Symbol cartridge, characterized in that an enlarged tape width of the magnetic tape which is wound around the pair of tape reels Data cartridge. 2. The data cartridge according to claim 1, wherein the tape width of the magnetic tape is increased from 1/4 inch to 8 mm.