JP6056797B2 - Magnetic tape cartridge - Google Patents

Description

  The present invention relates to a magnetic tape cartridge, and more particularly to a magnetic tape cartridge structure for reliably preventing damage to a magnetic tape in the magnetic tape cartridge.

  In recent years, with the increase in data in computer systems, the importance of large storage capacity backup has increased. In order to realize a large storage capacity backup, a helical scan type magnetic tape device is used. As a magnetic tape used in such a magnetic table device, a magnetic tape cartridge in which a single reel is rotatably housed in a case is known.

  When such a magnetic tape cartridge is set in a magnetic tape device, a magnetic tape wound around a reel is pulled out, information is recorded, or information already recorded is read out. After these purposes are completed, the magnetic tape is rewound onto a reel in the magnetic tape cartridge and stored again in the cartridge.

  However, at the time of rewinding to the reel, there is a problem that winding disturbance occurs due to a change in tape tension or magnetic tape disturbance, and the protruding part of the magnetic tape comes into contact with the reel due to vibration, causing damage to the magnetic tape. was there.

  Therefore, development of a technique for preventing such tape damage has been demanded.

  As a related technique, for example, in Patent Document 1, a tape cassette including a reel lock mechanism that prevents idle rotation of a reel is disclosed. The reel lock mechanism includes an engaging portion provided on surfaces of the lower flange and the lower half of the reel that face each other. This engaging portion has a convex portion and a concave portion, and when the reel is fitted to the reel base, it can prevent loose rotation of the reel by engaging the convex portion and the concave portion. it can.

  Furthermore, the cited document 2 discloses a protector that prevents various deformations of the upper and lower flanges of the reel by attaching various tapes, thin plate materials, cotton materials and the like to a reel used for rewinding. The protector is formed in a long and narrow plate shape and is provided with means for holding the flange in the longitudinal direction. By inserting and supporting the upper and lower flanges of the reel in these clamping means, it is possible to prevent the upper and lower flanges of the reel from being deformed.

  Further, in the cited document 3, when the outer peripheral portion of the reel is detected while the magnetic tape is wound on the reel, the winding shaft is moved in the winding shaft direction to forcibly disturb the winding position of the tape. In this way, the outermost winding part of the tape is roughly wound around the flange in a state of being in contact with the flange so that the flange is supported so as not to move, and the flange is prevented from contacting the protruding portion of the magnetic tape. be able to.

  Furthermore, in Cited Document 4, the distance between the first flange and the second flange is equal to the width of the magnetic tape due to the biasing force of the elastic member provided inside the second flange supported by the reel boss. Or a take-up reel that is adjusted to be smaller than the width of the magnetic tape.

  Thereby, when a magnetic tape is wound, it can prevent that winding disorder arises.

Japanese Utility Model Publication No. 61-28180 Japanese Utility Model Publication No. 06-23972 Japanese Patent No. 4792377 JP 2013-69383 A

  However, the reel lock mechanism described in Patent Document 1 receives an impact when the tape cassette is dropped during transportation or storage, and the upper flange is deformed. In this case, when the magnetic tape is wound, the part of the magnetic tape that protrudes upward or downward from the center of the reel hits the upper flange due to fluctuations in the tension of the tape at the time of winding. It cannot be prevented from being crushed.

  Further, when the protector described in Patent Document 2 is applied to a magnetic tape cartridge, it supports the upper and lower flanges of the reel, so that the reel cannot be rotated. Therefore, such a protector cannot be applied to a magnetic tape cartridge.

  Furthermore, the magnetic tape transport device described in Patent Document 3 uses a magnetic tape as a winding part several times or more, so that the tape damage is less than when the magnetic tape is partially protruded. Since the tape is used to prevent the flange from being deformed, the possibility that the magnetic tape is damaged cannot be denied.

  Furthermore, in the take-up reel described in Patent Document 4, the interval between the upper flange and the lower flange is adjusted to be equal to or smaller than the width of the magnetic tape. When the magnetic tape is wound, the magnetic tape is wound while pushing up the upper flange, thereby eliminating a gap between the upper flange and the magnetic tape. However, as long as the upper flange is pushed up using the magnetic tape, the possibility that the magnetic tape is damaged cannot be denied. Further, since the magnetic tape is wound in a state where there is no gap between the upper flange and the magnetic tape, there is a problem that the magnetic tape contacts or wears when the magnetic tape is wound.

  The present invention has been made in view of these problems. When a magnetic tape is wound, a winding disturbance occurs due to a change in tape tension or a disturbance of the magnetic tape. The main object of the present invention is to provide a magnetic tape cartridge capable of preventing the magnetic tape from being damaged and causing damage to the magnetic tape.

In order to achieve the above object, a magnetic tape cartridge of the present invention includes a reel having a hub for winding a magnetic tape between a pair of flanges,
And a case having a support portion for storing the reel and supporting the flange.

  According to the present invention, it is possible to prevent tape damage due to contact between the flange and the magnetic tape.

It is a longitudinal cross-sectional view which shows the structural example of the magnetic tape cartridge which concerns on 1st embodiment of this invention. It is a transverse cross section showing the state where each flange support part concerning a first embodiment of the present invention is installed in the side wall part of a magnetic tape cartridge case. It is a transverse cross section showing the state where each flange support part concerning a first embodiment of the present invention is installed in the four corners of a magnetic tape cartridge case. It is a figure which shows the state which inserts the magnetic tape cartridge which concerns on 1st embodiment of this invention in a magnetic tape apparatus. It is a flowchart which shows the operation | movement of winding up or rewinding a magnetic tape within the magnetic tape cartridge which concerns on 1st embodiment of this invention. It is a perspective view which shows a part of state in which the flange support part which concerns on 1st embodiment of this invention leaves | separates from an upper flange. . It is a figure which shows the state which ejected the magnetic tape cartridge from the magnetic tape apparatus which concerns on 1st embodiment of this invention. It is a perspective view which shows a part of state in which the upper flange which concerns on 1st embodiment of this invention is contact | abutted and supported by the flange support part. . It is a longitudinal cross-sectional view which shows the structural example of the magnetic tape cartridge which concerns on 2nd embodiment of this invention. It is a perspective view which shows a part of state in which the flange support part formed in the L shape at the front-end | tip part which concerns on 2nd embodiment of this invention supports an upper flange. It is a longitudinal cross-sectional view which shows the structural example of the magnetic tape cartridge which concerns on 3rd embodiment of this invention. It is a cross-sectional view showing a configuration of a related art magnetic tape cartridge. It is a cross section which shows the state where a magnetic tape is crushed when the magnetic tape cartridge of related technology receives an impact.

Hereinafter, a magnetic tape cartridge according to an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
The main configuration of the magnetic tape cartridge according to the present embodiment will be described as follows.

  The present embodiment will be described by way of an example having a single reel, but can also be applied to a device having two reels.

  FIG. 1 is a longitudinal sectional view showing a configuration example of a magnetic tape cartridge according to the present embodiment.

  As shown in FIG. 1, the magnetic tape cartridge 10 includes a cartridge case 11 and a reel 12 accommodated in the cartridge case 11.

  In the cartridge case 11, a lower half having a substantially rectangular planar shape and an upper half having a planar shape similar to the lower half and superposed on the upper portion of the lower half are joined to each other by joining means such as screws at four corners. It is made of plastic.

  In addition, as long as a magnetic tape can be wound up or rewound, the cartridge case 11 may be formed of other shapes, joining methods, or other materials.

  Next, the reel 12 is made of, for example, a synthetic resin, and a hub 16 is provided at the center. The upper and lower ends of the hub 16 are configured by integrally connecting two disk-shaped upper flanges 17 and a lower flange 18 in a parallel state.

  The upper flange 17 and the lower flange 18 may be formed in other shapes or materials as long as the magnetic tape can be wound or rewound.

  The diameters of the upper flange 17 and the lower flange 18 and the dimensions of the flange interval are arbitrarily set depending on the type and shape of the magnetic tape. Then, between the two flanges 17 and 18 of the reel 12, the magnetic tape is wound up or rewound onto the hub 16 of the reel 12 and used.

  In the present embodiment, four side wall portions 13 that form part of the periphery of the cartridge case 11 are provided. The four side wall portions 13 are located outside the reel 12 in the radial direction, and are provided in parallel to the central axis of the hub 16.

Of the four side wall portions 13, for example, at least one side wall portion 13 is provided with a flange support portion in each of the four side wall portions 13 in the present embodiment.
In FIG. 1, only two flange support portions 19 and 20 are shown as the flange support portion, but two other flange support portions are formed.

  The flange support portion is formed in a long and narrow plate shape made of synthetic resin. The flange support portion may be formed of other shapes or materials as long as it can support the upper flange 17 so as to prevent its deformation. Further, the flange support portion can be adjusted by contacting the size of the contact area with the upper flange 17 in the contact direction, for example, straight or obliquely.

  For example, the flange support portions 19 and 20 are installed on the side wall portion 13 so as not to interfere with the magnetic tape when the magnetic tape is wound. That is, when the magnetic tape cartridge 10 is ejected, the reel 12 is not lifted by the engagement of the clutch 23 of the magnetic tape device described later and the clutch 14 of the reel 12. In this case, the flange support portions 19 and 20 are installed on the side wall portion 13 so that the upper flange 17 can be supported at a position where the upper flange 17 is lowered. As an installation method, for example, an adhesion method or screwing may be considered. Note that the upper flange 17 is not particularly limited as long as it can support the upper flange 17.

  As an example, FIG. 2 and FIG. 3 are cross-sectional views showing a state where a flange support portion is attached in the magnetic tape cartridge of this embodiment.

  FIG. 2 is a cross-sectional view showing a state in which the flange support portion is installed on the side wall portion of the magnetic tape cartridge case.

  FIG. 3 is a cross-sectional view showing a state in which the flange support portions are installed at the four corners of the magnetic tape cartridge case.

  As shown in FIGS. 1, 2, and 3, when an external impact is applied to the upper flange 17 with the flange support portions 19, 20, 21, 22 in contact with the end of the upper flange 17, the upper flange By supporting 17, deformation of the upper flange 17 can be prevented.

  FIG. 4 is a view showing a state in which the magnetic tape cartridge 10 is inserted into the magnetic tape device 25.

  In FIG. 4, the reel 12 is provided with a clutch 14 that meshes with a clutch 23 of a magnetic tape device 25, which will be described later, at a lower end center portion 15 of the hub 16.

  When the clutch 23 of the magnetic tape device 25 and the clutch 14 of the reel 12 are engaged or disengaged, the reel 12 is lifted or lowered in the axial direction of the hub 16 in the magnetic tape cartridge case 11 by this engagement or disengagement. Can be.

  Thus, when the magnetic tape cartridge 10 is ejected from the magnetic tape device 25, the engagement between the clutch 23 of the magnetic tape device 25 and the clutch 14 of the reel 12 is released. At this time, the upper flange 17 is supported in contact with flange support portions 19, 20, 21 and 22 provided on the side wall portion 13 of the magnetic tape cartridge case 11.

  As a result, the reel 12 is supported in the magnetic tape cartridge 10 and cannot be rotated.

  When the magnetic tape 26 is inserted into the magnetic tape device 25, the clutch 23 of the magnetic tape device 25 and the clutch 14 of the reel 12 are engaged, and the clutch 14 of the reel 12 is magnetically coupled by the clutch 23 of the magnetic tape device 25. It is pushed up into the tape cartridge case 11.

  As a result, the upper flange 17 is separated from the flange support portions 19, 20, 21, and 22 provided on the side wall portion 13 of the magnetic tape cartridge case 11, and the reel 12 can be rotated. Can be returned.

  Next, the operation of winding or rewinding the magnetic tape in the magnetic tape cartridge according to this embodiment will be described with reference to the drawings.

  FIG. 5 is a flowchart showing the operation of winding or rewinding the magnetic tape in the magnetic tape cartridge according to the embodiment of the present invention.

  First, the magnetic tape cartridge 10 is inserted into the magnetic tape device 25 (S601).

  As shown in FIG. 4, when the magnetic tape cartridge 10 is inserted into the magnetic tape device 25, the clutch 23 of the magnetic tape device 25 pushes the clutch 14 of the reel 12 of the magnetic tape cartridge 10, thereby lifting the reel 12. .

  FIG. 6 is a perspective view illustrating a part of the state in which the flange support portion is separated from the upper flange.

  As shown in FIG. 6, when the reel 12 is lifted, the flange support portion 19 installed on the side wall portion 13 is separated from the upper flange 17 and falls downward. Then, the reel 12 can be rotated.

  Although not shown, the flange support portions 20, 21, and 22 are also installed in the same manner as the flange support portion 19 and can perform the same operation.

  In this state, the clutch 23 projecting from the surface of the deck base 24 of the magnetic tape device 25 meshes with the clutch 14 of the reel 12 housed in the magnetic tape cartridge 10 and one connecting shaft. A motor (not shown) for driving the reel 12 is connected via (not shown).

  As a result, the clutch 23 of the magnetic tape device 25 transfers the rotational force of the motor to the clutch 14 of the reel 12. Then, the clutch 14 of the reel 12 drives and rotates the reel 12 with the rotational force of the transferred motor, and the reading operation and the rewinding operation of the magnetic tape 26 are performed (S602).

  Next, the magnetic tape cartridge 10 is taken out from the magnetic tape device 25 (S603).

  FIG. 7 is a view showing a state where the magnetic tape cartridge 10 is ejected from the magnetic tape device 25.

  As shown in FIG. 7, when the magnetic tape cartridge 10 is ejected from the magnetic tape device 25, the clutch 23 of the magnetic tape device 25 and the clutch 14 of the reel 12 are released.

  Since the magnetic tape device 25 is no longer lifted from the clutch 23, the reel 12 is lowered to the original position. Along with this, the upper flange 17 is lowered and supported by contact with flange support portions 19, 20, 21, and 22 installed on the side wall portion 13 corresponding to the lowered position. As a result, the reel 12 cannot be rotated.

  FIG. 8 is a perspective view showing a part of the state in which the upper flange is supported in contact with the flange support portion.

  As shown in FIG. 8, the reel 12 is lowered to the original position, so that the upper flange 17 is supported in contact with the flange support portion 19 installed on the side wall portion 13. Then, the reel 12 cannot be rotated. (S603).

  Although not shown in the drawing, the flange support portions 20, 21, and 22 can support the upper flange 17 in the same manner as the flange support portion 19.

  Thereby, the reading operation and the rewinding operation of the magnetic tape are completed.

  According to this embodiment, for example, as shown in FIG. 12, the magnetic tape 2 is wound around the hub 3 provided at the center of the reel 1 in the magnetic tape cartridge, and the flange (upper flange 4 and lower flange 5) and There is a gap between the magnetic tapes 2.

  Due to the existence of such a gap, as shown in FIG. 13A, when the magnetic tape 2 is wound, a part of the magnetic tape 2 is reeled from the tension variation of the tape at the time of winding or the deviation of the magnetic tape 2. A winding disorder occurs in a state of jumping up or down from the center of 1, and a part of the magnetic tape pops out to form a projecting portion 6.

  Further, as shown in FIG. 13B, when the magnetic tape cartridge receives an impact P due to dropping or the like during transportation or storage, the upper flange 4 receiving the impact P is deformed. The protruding portion 6 of the magnetic tape is crushed by the deformed upper flange 4.

  Further, as shown in FIG. 13 (c), when the protruding portion 6 of the magnetic tape 2 is crushed, the tape edge of the protruding portion 6 is damaged, and the tape cannot run or breaks. Can be prevented.

As described above, in this embodiment, the flange and the magnetic tape are supported by the flange support portion so that even if the magnetic tape cartridge receives an impact from the outside, the flange support portion prevents deformation of the flange. Tape damage due to contact can be prevented.
(Second embodiment)
FIG. 9 is a longitudinal sectional view showing a configuration example of a magnetic tape cartridge according to the second embodiment of the present invention.

  As shown in FIG. 9, in the magnetic tape cartridge 20 according to the present embodiment, the flange support portion 19 is formed in an L shape. For example, the flange support portion 19 supports the flange by contacting the front end surface of the upper flange 17 and the inner surface near the front end surface. Since other configurations and processes are assumed to be the same as those in the first embodiment, detailed description thereof is omitted here.

  By forming the flange support portion 19 in an L shape and increasing the number of surfaces that support the upper flange 17, even if the reel 12 receives an impact force from the side (direction from the side wall portion 13 toward the center of the reel 12). Since the L-shaped tip of the flange support 19 supports the upper flange 17 from the side, contact damage to the magnetic tape due to the lateral movement of the reel 12 can be prevented.

  FIG. 10 is a perspective view showing a part of a state in which a flange support portion having an L-shaped tip portion supports the upper flange.

  As an example, as shown in FIG. 10, the flange support portion 19 formed in an L-shape prevents the reel 12 from moving laterally by supporting the upper flange 17 also from the side. Contact damage to the magnetic tape can also be prevented.

As described above, in this embodiment, since the upper flange is also supported from the side, contact damage to the magnetic tape due to the lateral movement of the reel can be prevented.
(Third embodiment)
FIG. 11 is a longitudinal sectional view showing a configuration example of a magnetic tape cartridge according to the third embodiment of the present invention.

  As shown in FIG. 11, in the magnetic tape cartridge 30 according to the present embodiment, a reel 34 having a hub 33 for winding the magnetic tape 37 between a pair of flanges 31, 32, a reel 34, and a flange 31. Or a case 36 having a support portion 35 for supporting 32. Since other configurations and processes are assumed to be the same as those in the first or second embodiment, detailed description thereof is omitted here.

  Therefore, even in the configuration of the present embodiment, even if the magnetic tape cartridge receives an impact from the outside by supporting the flange with the flange support portion, the flange support portion prevents the flange from being deformed. Tape damage due to contact can be prevented.

  As described above, the embodiment of the present invention has been described. However, the above description merely shows the principle of the present invention. The present invention is not limited to the configurations and embodiments shown and described above, and many variations and modifications can be made by those skilled in the art.

Appendices A part or all of the above embodiment can be described as in the following appendices. However, actually, it is not limited to the following description.
(Appendix 1)
A reel having a hub for winding a magnetic tape between a pair of flanges;
A magnetic tape cartridge comprising: a case that houses the reel and has a support portion that supports the flange.
(Appendix 2)
The magnetic tape cartridge according to appendix 1, wherein the support portion is provided on a wall portion of the case or a corner portion of the case so as to support and support one of the flanges.
(Appendix 3)
The magnetic tape cartridge according to appendix 1 or 2, wherein when the reel rotates, the reel moves in the axial direction of the hub, and the support of the flange is released by the support portion.
(Appendix 4)
The magnetic tape cartridge according to any one of supplementary notes 1 to 3, wherein the support portion supports an end portion of the flange.
(Appendix 5)
The magnetic tape cartridge according to appendix 4, wherein the support portion supports the front end surface of the flange or the vicinity of the front end surface.
(Appendix 6)
The magnetic tape cartridge according to any one of appendices 1 to 5, wherein the support portion is formed at a position that does not interfere with the magnetic tape when the reel rotates.

  The magnetic tape cartridge of the present invention can be applied to a large storage capacity backup in a computer system.

1, 12, 34 Reel 2, 26, 37 Magnetic tape 3, 16, 33 Hub 4, 17, 31 Upper flange 5, 18, 32 Lower flange 6 Projection part 10, 20, 30 Magnetic tape cartridge 11, 36 Magnetic tape Cartridge case 13 Side wall parts 14, 23 Clutch 15 Lower end center parts 19, 20, 21, 22, 35 Flange support part 24 Deck base 25 Magnetic tape device

Claims (6)

A reel having a hub for winding a magnetic tape between a pair of flanges;
A case for storing the reel;
The magnetic tape cartridge in which the support part which supports the said flange is formed in at least one of the inner wall of the side wall part of the said case, and the corner part inside the said side wall part .   The magnetic tape cartridge according to claim 1, wherein a plurality of the support portions are formed.   3. The magnetic tape cartridge according to claim 1, wherein when the reel rotates, the reel moves in an axial direction of the hub, and the support of the flange by the support portion is released.   The magnetic tape cartridge according to claim 1, wherein the support portion supports an end portion of the flange.   The magnetic tape cartridge according to claim 4, wherein the support portion supports the front end surface of the flange or the vicinity of the front end surface.   The magnetic tape cartridge according to claim 1, wherein the support portion is formed at a position that does not interfere with the magnetic tape when the reel rotates.

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