JP3099769U - Magnetic tape unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the continuity of cleaning performance and to simplify the structure of a cleaner unit by making it possible to attach a cleaner unit by utilizing a loading post or an inclined post originally provided in a magnetic tape device. And to improve the assembly workability.
SOLUTION: A loading post 3 and an inclined post 4 are attached to a movable base 6 which is common to the loading post 3 and integrated, and a cleaner unit 7 is attached by utilizing the loading post 3 and the inclined post 4. The cleaner member 73 of the cleaner unit 7 is pressed against the rotating drum 22 to clean the magnetic head 23 in a process during the loading operation or the unloading operation of the loading post 3.
[Selection diagram] Fig. 1

Description

The present invention provides a magnetic tape device, particularly a magnetic tape provided with a cleaner unit for cleaning a magnetic head built in a rotating drum around which the magnetic tape is wound, during a magnetic tape loading step or an unloading step. Equipment related.

FIG. 3 is an explanatory view showing a general schematic configuration of a magnetic tape device. In FIG. 3, reference numeral 1 denotes a tape cassette on which a reel 1a and a reel 1b are arranged in a right and left direction. Reference numeral 2 denotes a head cylinder having a fixed drum and a rotating drum concentrically disposed above the fixed drum and rotating around an inclined axis, and a magnetic head built in the rotating drum is provided between the rotating drum and the fixed drum. Facing the gap. The loading posts 3 and 3 are arranged separately on the left and right sides of the head cylinder 2 with the initial position remote from the rotary drum of the head cylinder 2 and the loading position of the rotary post. The magnetic tape T can be reciprocated between adjacent operating positions as indicated by arrows, and the magnetic tape T pulled out of the tape cassette 1 by the forward movements a and a from the initial position to the operating position straddles the rotating drum and the fixed drum. Then, an unloading operation for releasing the winding state of the magnetic tape around the rotating drum and the fixed drum is performed by the backward movements b and b from the operating position to the initial position. Each of these loading posts 3 is provided with an inclined post 4 substantially parallel to the above-mentioned inclined axis of the rotary drum, and the inclined post 4 is shared with the loading post 3 forming a pair with a common movable base (not shown). (Illustrated: described later). Then, the inclined post 4 is located between the rotary drum 22 and the loading post 3, and the magnetic tape T is wound thereon.

{Circle around (4)} The full-width erasing head 51, audio erasing head 52, control head 53, and the like face the recording surface of the magnetic tape T loaded by the loading posts 3 and 3. Further, a predetermined running force is applied to the magnetic tape T by a capstan 54 and a pinch roller 55 for pressing the magnetic tape T against the capstan 54, and a fixed guide post 56 and a fixed guide post 56 are applied to the magnetic tape T. A predetermined tension is applied by the cooperative action with the tension post 57.

FIG. 4 is a plan view schematically showing a main part of a conventional magnetic tape device. FIG. 2 shows that the head cylinder 2 includes a fixed drum 21 and a rotating drum 22, and a magnetic head 23 built in the rotating drum 21 faces a gap between the fixed drum 21 and the rotating drum 22. It is shown that it is. Further, it is shown that the loading post 3 provided on one side of the head cylinder 2 and the inclined post 4 attached thereto are attached to a movable base 6 common to them and integrated. Further, a cleaner unit 7 arranged opposite to the head cylinder 2 is shown.

The cleaner unit 7 includes a vertical shaft 71 attached to the chassis 9 to which the head cylinder 2 is attached, an arm 72 swingably fitted and held on the vertical shaft 71, and a distal end of the arm 72. It has a cleaner member 73 attached thereto, a control lever portion 74 connected to the arm 72 and extending in a curved shape, and a control lever portion 74 connected to the arm 72 and locked in the locking hole 91 of the chassis 9. And a return spring portion 75 that is provided.

The loading post 3 moves from the initial position to the operating position, and the magnetic tape is wound around the rotary drum during the loading operation, and the loading post 3 returns from the operating position to the initial position. When the loading post 3 or the movable base 6 kicks the control lever 74 in each step of the unloading operation for releasing the state of winding the magnetic tape around the drum, the arm 72 is biased by the return spring 75. The cleaner member 73 comes into contact with the stationary drum 21 and the rotating drum 22 at a position straddling the gap between the fixed drum 21 and the rotating drum 22 as shown by the imaginary line in FIG. The head 23 is cleaned. When the loading post 3 or the movable base 6 is separated from the control lever portion 74 during the loading operation or the unloading operation of the loading post, the arm 72 biased by the return spring portion 75 causes the cleaner member 73 to move. Is retracted to a position away from the fixed drum 21 and the rotating drum 22 as shown by the solid line in the figure.

In the conventional magnetic tape device described with reference to FIG. 4, as shown in the operation explanatory view of the cleaner member 73 shown in FIG. 5 (A), the cleaner member 73 is rotated about a vertical shaft 71 (see FIG. 4). Since the rotary member 22 swings in a far and near direction with respect to the rotary drum 22 as indicated by the arrow, the location where the cleaner member 73 contacts the rotary drum 22 is only one location on the outer peripheral surface of the rotary drum 22. FIG. 5B shows the relationship between the cleaner member 73 and the movement locus L of the magnetic head 23 (see FIG. 4) in this case. In FIG. 5B, the surface of the cleaner member 73 is shown in an expanded manner, and the movement locus L of the cleaner member 73 is shown by a dashed line. Here, assuming that the cleaner member 73 is formed in a columnar shape and is rotated by rubbing against the rotating drum 22, as shown in the explanatory view of FIG. The magnetic head 23 passes through one location while rubbing along a linear locus.

On the other hand, in the prior art, a slider, which is a member corresponding to the movable base 6 described with reference to FIG. 4, is provided with a support shaft of a cleaner member, and as the magnetic tape is loaded by the slider, the cleaner member becomes A configuration is shown in which the rotary head cylinder (corresponding to the head cylinder in FIG. 4) is rubbed (see, for example, Patent Document 1). Further, another prior example also shows a case where a cleaner corresponding to a cleaner member is attached to a slider which is a member corresponding to the movable base 6 described in FIG. 4 (for example, see Patent Document 2).

JP-A-6-131636 JP-A-6-325332

However, in the conventional magnetic tape device described with reference to FIG. 4, as shown in FIG. 5B, when the cleaner unit 7 operates, the magnetic head 23 moves linearly along one location in the width direction of the cleaner member 73. Are drawn and rubbed against each other, so that only a part of the surface of the cleaner member 73 is used for cleaning the magnetic head 23, and the other wide area becomes a dead space that is not useful for cleaning. However, when such a situation arises, the cleaning action on the magnetic head 23 deteriorates early and the durability of the cleaning performance is impaired. Further, not only is an extra vertical shaft 71 attached to the chassis 9 necessary, but also the cost of the cleaner unit 7 itself is reduced because the shape of the arm including the control lever 74 and the return spring 75 is complicated. It was expensive and the assembly was complicated.

On the other hand, in Patent Documents 1 and 2 shown as prior examples, the cleaner member is attached to the slider for loading the magnetic tape, so that the cleaner member has a fixed length on the outer peripheral surface of the rotating drum. Are rubbed in the region having Therefore, although the wide area of the surface of the cleaner member 73 is used for cleaning the magnetic head 23 and the continuity of the cleaning performance is improved, the cleaner member is replaced by a member corresponding to the loading post or the inclined post. Since the slider is mounted on the slider, it is necessary to secure a dedicated mounting space for the cleaner member on the slider, and the cleaner member becomes larger accordingly, which affects other component arrangements of the magnetic tape device. There is a problem that a necessity of an overall design change arises.

The present invention has been made in view of the above circumstances and problems, and the cleaning performance can be maintained by utilizing a loading post and an inclined post originally provided in the magnetic tape device so that the cleaner unit can be attached. It is an object of the present invention to simplify the structure of the cleaner unit and to improve the workability of assembling the cleaner unit, and to reduce the cost of the magnetic tape device.

The magnetic tape device according to the present invention is capable of reciprocating between an initial position remote from a rotating drum having a magnetic head and rotating around an inclined axis and an operating position near the rotating drum, and operates from the initial position. Performs a loading operation in which the magnetic tape pulled out of the tape cassette is wound around the rotating drum by the forward movement to the position, and unloads the state in which the magnetic tape is wound around the rotating drum by the backward movement from the operating position to the initial position. A loading post that performs an operation, and the magnetic tape attached to the loading post and disposed in parallel with the tilt axis and wound around the rotary drum in an inclined position is corrected to a vertical position to correct the magnetic tape. An inclined post that guides against the loading post is mounted on a common movable base. Together are integrated Te, during the process of loading operation or the unloading operation of the loading post, and a cleaner unit for cleaning the magnetic head is pressed against the said rotary drum.

The inclined post includes a magnetic tape winding portion and a non-winding portion on which the magnetic tape is not wound, and an arm supporting a cleaner member of the cleaner unit is fitted to the non-winding portion of the tilt post. While being held together, the cleaner member is provided at a position where the cleaner member rubs against a region within a certain angular range on the outer peripheral surface of the rotary drum in each of the above steps.

With this configuration, the cleaner member rubs with a region of the rotating drum within a certain angle range during the loading operation and the unloading operation of the loading post, and furthermore, the rotating drum rotates around the tilt axis, so that the magnetic head is It is rubbed by the cleaner member while relatively moving in the width direction of the cleaner member. Therefore, a wide area of the surface of the cleaner member is used for cleaning the magnetic head, and it is possible to reduce a dead space that is not useful for cleaning the surface of the cleaner member. Prevention of early deterioration of the cleaning action is maintained, and continuity of the cleaning performance is maintained. In addition, the cleaner unit is fitted and held using the inclined post whose arm is originally attached to the movable base, so there is no need to secure a dedicated mounting space for the cleaner unit on the movable base. The table does not increase in size.

In the present invention, in the above process, the cleaner member moves horizontally while rubbing the outer peripheral portion of the rotary drum, whereas in the friction region of the rotary drum where the cleaner member rubs, the magnetic material is removed. It is desirable that the head rotates along a locus of a mountain shape. According to this, for the above-described reason, early deterioration of the cleaning action on the magnetic head is suppressed, and the continuity of the cleaning performance is maintained.

In the present invention, the loading post has a magnetic tape wrapping portion and a non-wrapping portion where the magnetic tape is not wrapped, and the arm has a hole fitted to the non-wrapping portion of the inclined post. And a locking portion that locks to the non-wound portion of the loading post and prevents the arm from rotating around the inclined post. According to this, since the locking portion of the arm arm is locked to the non-wound portion of the loading post, the state of attachment of the cleaner unit is stabilized, which helps to improve the cleaning performance of the magnetic head.

In the present invention, the non-wrapped portion of the loading post is located beside the non-wrapped portion of the inclined post, and the locking portion of the arm extends to the side of the hole and extends. It is desirable to be locked to the non-wound portion of the loading post. According to this, the hole of the cleaner unit and the locking portion can be formed side by side, so that the shape of the cleaner unit can be easily simplified. It becomes easy to reduce the unit price and to improve the assembly workability.

The magnetic tape device according to the present invention is capable of reciprocating between an initial position remote from a rotating drum having a magnetic head and rotating around an inclined axis and an operating position near the rotating drum. Then, a loading operation is performed in which the magnetic tape drawn from the tape cassette is wound around the rotating drum by the forward movement from the initial position to the operating position, and the magnetic tape is wound around the rotating drum by the backward movement from the operating position to the initial position. A loading post for performing an unloading operation for canceling the state, and a posture of the magnetic tape attached to the loading post and disposed in parallel with the inclined axis and wound around the rotating drum in an inclined posture, is corrected to a vertical posture. And the inclined post that guides the magnetic tape to the loading post A magnetic unit which is attached to and integrated with the moving base and has a cleaning unit which is pressed against the rotating drum to clean the magnetic head in a step in the course of the loading operation or the unloading operation of the loading post. In the tape device, the inclined post and the loading post, a magnetic tape wrapping portion positioned side by side, and a non-wrapped portion that is positioned side by side and magnetic tape is not wrapped, respectively A hole provided in the arm supporting the cleaner member of the cleaning unit is fitted and held in the non-wound portion of the inclined post, and the fork extends laterally from the hole. Is engaged with the non-wrapped portion of the loading post, and the arm is engaged with the inclined post. In the above process, the cleaner member moves horizontally while rubbing the outer peripheral portion of the rotary drum, whereas the rotary drum rubs against the cleaner member. In the rubbing region, the structure is further embodied by adopting a configuration in which the magnetic head rotates along a locus of a mountain shape. The operation of the present invention will be described in detail with reference to an embodiment described later.

As described above, in the magnetic tape device according to the present invention, the inclined post or the loading post attached to the movable base is selected as the attachment portion of the cleaner unit, so that the vertical shaft and the locking In addition to eliminating the need to form holes, the magnetic head can be cleaned using a wide area in the width direction of the surface of the cleaner member during the loading operation or the unloading operation by the loading post. In addition, since the continuity of the cleaning performance is improved as compared with the related art, the stability of the image and sound of the magnetic tape device and other troubles due to the contamination of the magnetic head hardly occur for a long time.

FIG. 1 is a plan view schematically showing a main part of the magnetic tape device according to the embodiment of the present invention. This magnetic tape device is different from the conventional magnetic tape device described with reference to FIG. 4 in that the locking holes 91 and the vertical shaft 71 of the chassis 9 shown in FIG. The only difference is that the shape of 76 is simpler than that of the arm 72 shown in FIG. 4 and is attached to the movable base 6, and the other points are the same as those described in FIG. The description will be omitted by adding a symbol to avoid duplication of the description.

Although the movable base 6 shown in FIG. 1 and the inclined post 4 and the loading post 3 attached to the movable base 6 have the same configuration as that described with reference to FIG. The post 4 and the loading post 3 will be described in more detail. That is, the loading post 3 originally has a magnetic tape wrapping portion, which is an effective portion for wrapping the magnetic tape, and a non-wrapping portion located below the magnetic tape wrapping portion. It is formed by a boss protruding from the table 6. The inclined post 4 also has a magnetic tape wrapping portion, which is an effective portion for wrapping the magnetic tape, and a non-wrapping portion located below the magnetic tape wrapping portion. The non-wound portion of the loading post 3 and the non-wound portion of the inclined post 4 are arranged side by side.

On the other hand, the cleaner unit 7 has a flat plate-shaped arm 76 reinforced by a rib 76a, and a hole rotatably fitted and held on the non-wound portion of the inclined post 4 at the base side of the arm 76. And a bifurcated locking portion 78 which extends laterally from the hole 77 and is fitted and locked to the non-wound portion of the loading post 3. , A cylindrical cleaner member 73 is rotatably attached. According to this mounting structure, it is not necessary to secure a dedicated mounting space for the cleaner unit 7 on the movable base 6, and the locking portion 78 is fitted to the non-wound portion of the loading post 3 and locked. This prevents the arm 76 from rotating about the inclined post 4. When the cleaner unit 7 is mounted, the hole 77 of the arm 76 is fitted to the non-wrapped portion of the inclined post 4, and the locking portion 78 is locked to the non-wrapped portion of the loading post 3. Just need.

The flat plate-shaped arm 76 having the hole 77 and the locking portion 78 is integrally formed of synthetic resin, and has its own elasticity. By forming the arm 76 in the shape of a flat plate as described above, the shape is simplified or reduced in size, so that the molding cost is reduced.

In FIG. 1, reference numeral 92 denotes a guide groove formed in the chassis. At the time of loading operation and unloading operation of the magnetic tape by the loading post 3, the movable base 6 is guided by the guide groove 92 so that the initial position and the operation position are attained. Reciprocate between and. The cleaner member 73 of the cleaner unit 7 is disposed at a position where the loading post 3 rubs against a region within a certain angular range of the outer peripheral surface of the rotary drum 22 in each step of performing the loading operation and the unloading operation. In each step, the cleaner member 73 moves horizontally with elastic deformation of the arm 76 while rubbing the outer peripheral portion of the rotary drum 22. Such a situation can be easily created by appropriately determining the length and the direction of the arm 76.

The tilt post 4 is tilted at the same angle as the tilt axis of the rotary drum 22, and the angle and the direction of the tilt are constant in a standardized magnetic tape device. That is, generally, the tilt axis of the rotary drum 2 rises in a posture tilted to the left as viewed from the front side of the magnetic tape device, as can be analogized in FIG.

In FIG. 2A, the angle range of the area where the cleaner member 76 rubs against the outer peripheral surface of the rotating drum 22 in a step in the course of the loading operation or the unloading operation of the loading post 3 is indicated by a symbol θ. FIG. 2B shows the relationship between the cleaner member 76 and the movement locus L of the magnetic head 23 (see FIG. 1). In FIG. 2B, the surface of the cleaner member 76 is shown in an expanded manner, and the movement locus L of the cleaner member 73 is shown by a dashed line.

As can be seen from FIG. 2A, when the cleaner member 73 rubs while following the outer peripheral surface of the rotary drum 22 in the rubbing region of the angle range θ, as shown in FIG. The magnetic head 23 rotates along the locus L of the mountain shape. Therefore, a wide range in the width direction of the cleaner member 73 is used for cleaning the magnetic head 23. Moreover, since such a cleaning operation is repeated for each of the loading operation and the unloading operation of the magnetic tape, the entire area of the surface of the cleaner member 73 in which the magnetic head 23 is displaced in the width direction of the surface of the cleaner member 73. Is widely used for cleaning, so that the durability of the cleaning performance is remarkably improved as compared with the related art.

In FIG. 1, the state where the cleaner member 73 is located at the start point of the friction area on the outer peripheral surface of the rotary drum 22 during the loading operation of the magnetic tape is shown by a virtual line. In FIG. 2A, the position of the cleaner member 73 when the loading operation is completed is illustrated by a virtual line.

FIG. 2 is a plan view schematically showing a main part of the magnetic tape device according to the embodiment of the present invention. (A) is an explanatory view showing an area where the cleaner member rubs against the outer peripheral surface of the rotary drum, and (B) is an explanatory view showing the relationship between the cleaner member and the movement locus of the magnetic head. FIG. 2 is an explanatory diagram showing a general schematic configuration of a magnetic tape device. FIG. 10 is a plan view schematically showing a main part of a conventional magnetic tape device. FIG. 5A is an explanatory diagram of an operation of a cleaner member in the magnetic tape device of FIG. 4, and FIG. 5B is an explanatory diagram showing a relationship between a cleaner member and a movement locus of a magnetic head in the magnetic tape device of FIG.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Tape cassette 3 Loading post 4 Inclined post 6 Movable base 7 Cleaner unit 22 Rotary drum 23 Magnetic head 76 Arm 77 Hole 78 Lock part L Movement locus of magnetic head T Magnetic tape

Claims (5)

It can reciprocate between an initial position remote from a rotating drum having a magnetic head and rotating about an inclined axis and an operating position near the rotating drum, and can be moved from the tape cassette by going forward from the initial position to the operating position. A loading post for performing a loading operation for winding the pulled-out magnetic tape around the rotating drum, and performing an unloading operation for releasing the winding state of the magnetic tape on the rotating drum by a return movement from the operating position to the initial position; and A tilting post attached to the post and disposed substantially parallel to the tilting axis and around which a magnetic tape is wound is attached to a movable base common to them and integrated, and the loading operation of the loading post is performed. Or, in the middle of the unloading operation, In the magnetic tape apparatus comprising a cleaner unit for cleaning the magnetic head Te,
The inclined post and the loading post are provided with a magnetic tape wrapping portion positioned side by side, and a non-wrapping portion positioned side by side and where the magnetic tape is not wrapped, respectively. ,
A hole provided in the arm supporting the cleaner member of the cleaner unit is fitted and held in the non-wound portion of the inclined post, and a bifurcated locking portion extending laterally from the hole. Are fitted and locked to the non-wound portion of the loading post to prevent the arm from rotating around the inclined post,
The cleaner member is provided at a position where the cleaner member rubs with an area within a certain angular range of the outer peripheral surface of the rotary drum in each of the steps, and in each of the steps, the cleaner member horizontally rubs the outer peripheral portion of the rotary drum. Wherein the magnetic head rotates along a locus of a mountain in a rubbing area of the rotary drum where the cleaner member rubs. Tape device. It can reciprocate between an initial position remote from a rotating drum having a magnetic head and rotating about an inclined axis and an operating position near the rotating drum, and can be moved from the tape cassette by going forward from the initial position to the operating position. A loading post for performing a loading operation for winding the pulled-out magnetic tape around the rotating drum, and performing an unloading operation for releasing the winding state of the magnetic tape on the rotating drum by a return movement from the operating position to the initial position; and A tilting post attached to the post and disposed substantially parallel to the tilting axis and around which a magnetic tape is wound is attached to a movable base common to them and integrated, and the loading operation of the loading post is performed. Or, in the middle of the unloading operation, In the magnetic tape apparatus comprising a cleaner unit for cleaning the magnetic head Te,
The inclined post has a magnetic tape winding portion and a non-winding portion where the magnetic tape is not wound, and an arm supporting a cleaner member of the cleaner unit is fitted and held in the non-winding portion of the tilt post. And a cleaner member is provided at a position where the cleaner member rubs with a region within a certain angular range of the outer peripheral surface of the rotary drum in each of the above steps. In each of the above steps, the cleaner member moves horizontally while rubbing the outer peripheral portion of the rotary drum. On the other hand, in the rubbing region of the rotary drum where the cleaner member rubs, the magnetic head is not moved. 3. The magnetic tape device according to claim 2, wherein the magnetic tape device rotates along a locus of the shape. The loading post has a magnetic tape wrapping portion and a non-wrapping portion on which the magnetic tape is not wrapped, and the arm has a hole fitted into the non-wrapping portion of the inclined post; 4. The magnetic tape device according to claim 3, further comprising: a locking portion that locks the non-wound portion of the arm to prevent the arm from rotating around the inclined post. The non-wound portion of the loading post is located beside the non-wound portion of the inclined post, and the locking portion of the arm extends beside the hole so that the non-wrapped portion of the loading post is 5. The magnetic tape device according to claim 4, wherein the magnetic tape device is locked on the winding portion.

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