JPH0514376Y2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a tape cartridge in which a tape, which is a recording medium, is stored.

[Summary of the idea]

The present invention is configured such that a rotating body, which is pivotally supported by the lower half, is brought into contact with the drive means of the recording/reproducing device through an opening formed in the side wall of the upper half, and rotated, thereby causing the tape to run. On the inside of the side wall of the upper half of the tape cartridge,
By providing a cutting portion extending from the lower end of the side wall to the opening, when assembling the tape cartridge, even if the upper half is vertically lowered to the fixed position on the lower half, the side wall of the upper half will be cut off from the rotating body. This is to prevent contact with the

[Conventional technology]

Conventionally, there have been tape cartridges as disclosed in, for example, Japanese Unexamined Patent Publication No. 15517/1983.

This tape cartridge has a cartridge body constructed by fixing a case with an open bottom on a base plate, and a pair of tape reels wound with magnetic tape are housed inside the cartridge body. ing.

A plurality of rollers are rotatably supported on the base plate, and a belt for rotating the tape reel and running the magnetic tape is wound around between these rollers with strong tension. ing. Of these rollers, the belt-driven roller is arranged at a position corresponding to the opening formed in a part of the side wall of the case, and during recording and reproduction,
This belt drive roller contacts and rotates the drive roller of the recording/reproducing device through the opening of the case,
This drives the belt mentioned above.

Next, to assemble this tape cartridge,
On the base plate on which the plurality of rollers described above are pivotally supported, the case is fixed by screws or the like so as to face each other from above. However, at this time, if the case is vertically lowered to a fixed position on the base plate and brought into contact with the base plate, the lower end of the side wall of the case will be in a position corresponding to the opening of the case when the case is lowered. The belt drive roller and the case will be damaged due to contact with the upper surface of the belt drive roller, which is pivotally supported near the side end of the base plate. Conventionally, for this purpose, the case was lowered from a position directly above the base plate to a position where the side wall of the case did not come into contact with the rotating body, and the lower end of the case passed the side of the roller. was moved laterally to a fixed position on the base plate, and the case was brought into contact with the base plate.

[Problem that the invention attempts to solve]

However, with the above-mentioned conventional tape cartridge, when assembling the cartridge, the work of attaching the case to the base plate for fixing the case to the base plate becomes complicated, especially when automatic assembly is performed using an automatic assembly machine. Furthermore, since it is necessary to perform a complicated lowering operation of the case relative to the base plate, the mechanism of the automatic assembly machine becomes complicated and the entire machine becomes larger.

In addition, after lowering the case relative to the base plate, when moving the case laterally to the fixed position on the base plate, the magnetic tape that is wrapped around the side edge of the base plate should be removed from the side wall of the case. It was often the case that the device was damaged.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tape cartridge configured such that the lower end of the side wall of the case does not come into contact with the belt drive roller even when the case is vertically lowered to a fixed position on the base plate.

[Means for solving problems]

The present invention includes a cartridge main body which is formed by fixing an upper half to a lower half and stores a tape as a recording medium, an opening formed by cutting out a part of the side wall of the upper half, and a cartridge main body in which an upper half is fixed to a lower half. and a rotating body rotatably supported by the upper half and located at a position corresponding to the opening of the upper half, and the rotating body passes through the opening and hits a driving means provided on the recording/reproducing device side. In a tape cartridge configured to be rotated in contact with each other, thereby causing the tape to run, a tape is provided on the inside of the side wall, on a surface facing the rotating body, from the lower end of the side wall to the opening. Even if a cutting portion is provided and the upper half is vertically lowered to a fixed position on the lower half when the upper half is fixed to the lower half,
The side wall of the upper half is configured so as not to come into contact with the rotating body that is pivotally supported by the lower half.

[Effect]

According to the present invention, when fixing the upper half to the lower half, even if the upper half is vertically lowered to the fixed position on the lower half, the rotating body pivotally supported on the lower half is moved by the cutting part of the upper half. It relatively penetrates inside the side wall without contacting the side wall, and is arranged at a position corresponding to the opening formed in the upper half.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to a data cartridge for recording various data will be described with reference to the drawings.

As shown in Figure 3, the data cartridge 1
A cartridge body 4 is formed by fixing a case 3 made of synthetic resin onto a metal base plate 2 such as an aluminum plate having a thickness of about 2.5 mm using screws or the like.

On the base plate 2 are a pair of left and right tape reels 5.
are each rotatably attached to a reel shaft 5a, and a magnetic tape 6 is wound around the tape reel 5. A pair of left and right tape guide rollers 7 that guide the magnetic tape 6 along the front side of the cartridge body 4 are also rotatably supported on the base plate 2, and a belt 10 is rotatably supported along the rear side of the cartridge body 4. A pair of left and right belt guide rollers 8 are rotatably mounted on a roller shaft 8a for guiding along the belt. A belt drive roller 9 is disposed approximately in the middle of the pair of tape guide rollers 7 on the front side of the cartridge body 4. This belt drive roller 9 is composed of a base portion 29 and a contact portion 30, and is rotatably supported on the base plate 2 by a roller shaft 9a. Note that the mirror 21 placed on the side of the belt drive roller 9 is for detecting the end of the tape.

The belt 10 is made of an elastic belt, and is wound around the belt guide roller 8 and the belt drive roller 9 in a substantially T-shape with strong tension. A portion of the belt 10 is in contact with the outer periphery of the magnetic tape 6 wound around the pair of tape reels 5, respectively.

An opening 12 is formed by cutting out a portion of the side wall 3a at approximately the center of the side wall 3a on the front side of the case 3, at a position corresponding to the belt drive roller 9. A lower end portion 1 of the case 3a is provided on the inner surface of the side wall 3a facing the belt drive roller 9.
A cutting portion 14 extending from the opening 12 from the opening 12 is provided. The surface of the cutting portion 14 facing the belt drive roller 9 is a curved surface 1 corresponding to the outer periphery 15 of the belt drive roller 9, as shown in FIGS. 1A and 1B.
6, and when the case 3 is lowered perpendicularly relative to the base plate 2 from a position directly above the fixed position to the base plate 2, the lower end 1 of the side wall 3a of the case 3
3 is configured so that it does not come into contact with the contact portion 30 of the belt drive roller 9. That is, as shown in FIG. 1B, the roller shaft 9a of the belt drive roller 9
The distance l from the center point O to the curved surface 16 of the cutting part 14 is configured to be larger than the distance r to the outer periphery 15 of the contact part 30 of the belt drive roller 9.

An inclined surface 18 is formed inside the lower end 13 of the side wall 3a to face the magnetic tape 6 stretched between the pair of tape guide rollers 7, as shown in FIG. This inclined surface 18 is inclined toward the inside of the case 3 from the lower end 13 of the side wall 3a, and is provided along the longitudinal direction of the side wall 3a.

A notch 11 is formed at one end of the side wall 3a of the case 3, as shown in FIG. At one end, there is an opening/closing door 17 with arrows a and b, which closes the notch 11 when the data cartridge is not in use to prevent dust from adhering to the magnetic tape 6 passed through the notch 11.
It is attached so that it can rotate freely in the direction.

Data cartridge 1 configured as described above
When the is attached to the recording/reproducing device (not shown), the lid opening means (not shown) provided in the recording/reproducing device
The end portion 17a of the opening/closing door 17 is pressed and the opening/closing door 17 is opened in the direction of arrow a in FIG. The recording/reproducing head is brought into contact with the magnetic tape 6. At the same time, as shown in FIG.
0 rotates the belt drive roller 9 and drives the belt 10.

Since the belt 10 is brought into contact with the outer circumference of the magnetic tape 6 wound around the tape reel 5 under strong tension, the tape reel 5 is rotated as the belt 10 is driven, and the magnetic tape 6 is rotated as the belt 10 is driven. 6 is made to run. That is, as the belt drive roller 9 rotates, for example, in the direction of arrow e in FIG. , magnetic tape 6
is made to travel in the direction of arrow g.

Next, the assembly operation of the above-mentioned data cartridge will be explained.

First, as shown in FIG. 3, a base plate 2 is provided with a pair of tape reels 5 and rollers 7 to 9.
Meanwhile, the case 3 is vertically lowered in the direction of the arrow h from a position directly above the fixed position to the base plate 2 by an automatic assembly machine. At this time, when the lower end 13 of the side wall 3a of the case 3 reaches the upper surface position of the contact part 30 of the belt drive roller 9, the outer periphery 15 of the contact part 30 of the belt drive roller 9 as shown in FIG. However, the opening 1 does not come into contact with the lower end 13 of the side wall 3a.
It relatively enters into the cutting part 14 formed at the lower part of 2. When the case 3 is subsequently lowered to the position shown by the dashed line in FIG. 1A and brought into contact with the base plate 2, the contact portion 30 of the belt drive roller 9 is moved as shown in FIGS. 1B and 2. As shown, it is arranged at a position corresponding to the opening 12 of the case 3. Note that even if the magnetic tape 6 passing below the belt drive roller 9 becomes slack when the case 3 is lowered, the inclined surface 18 is formed on the lower end 13 of the side wall 3a of the case 3. , magnetic tape 6
is not caught on the lower end 13 of the side wall 3a, but is allowed to escape from the lower end 13 to the belt drive roller 9 side by the inclined surface 18. Therefore, the magnetic tape 6 is reliably prevented from being caught on the lower end 13 of the side wall 3a and damaged.

After the case 3 is brought into contact with the base plate 2 and temporarily fixed in this way, the case 3 is fixed to the base plate 2 by screws or the like, and the cartridge main body 4 is formed.

According to the embodiment described above, the data cartridge 1
When assembling, the case 3 is vertically lowered to the fixed position relative to the base plate 2, and the case 3 is attached to the base plate 2.
Even if the side wall 3a of the case 3
The cutting part 14 provided inside the case 3
The side wall 3a of the belt drive roller 9 is prevented from coming into contact with the belt drive roller 9. Therefore, when the case 3 is lowered, the lower end 13 of the side wall 3a of the case 3 and the belt drive roller 9 are prevented from being damaged due to contact with each other, and the lower end 13 of the side wall 3a of the case 3 is prevented from being damaged. It is possible to prevent the magnetic tape 6 that is being used from being damaged.

Furthermore, since the cutting portion 14 is provided inside the side wall 3a, the gap between the magnetic tape 6 stretched over the front side of the base plate 2 and the inner surface of the side wall 3a is increased.
The gap becomes larger. Therefore, the attraction of the magnetic tape 6 to the side wall 3a due to the charging of the magnetic tape 6, which conventionally occurred in the vicinity of the belt drive roller 9, is prevented, and uneven tape tension caused by the attraction of the magnetic tape 6 to the side wall 3a is prevented. This effectively prevents poor contact of the recording/reproducing head (not shown) to the magnetic tape 6 and uneven tape speed.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various effective changes can be made based on the technical idea of the present invention.

For example, in the above-mentioned embodiment, the surface of the cutting section 14 facing the belt drive roller 9 was configured with a curved surface 16, but it may also be configured with a flat surface 23 as shown in FIG. The cut portion may have any shape as long as it can prevent the side wall 3a of the case 3 from coming into contact with the belt drive roller 9 when the case 3 is lowered perpendicularly to the plate 2.

[Effect of idea]

According to the present invention, when fixing the upper half to the lower half, even if the upper half is vertically lowered to the fixed position on the lower half, the side wall of the upper half comes into contact with the rotating body that is pivotally supported on the lower half. be prevented from being Therefore, damage to the rotating body or the side wall of the upper half caused by contact between the two is reliably prevented.

In addition, when fixing the upper half to the lower half, there is no need to perform complicated work to connect the upper half to the lower half in order to avoid contact between the side wall of the upper half and the rotating body. The upper half can be brought into contact with the lower half simply by vertically lowering it. Therefore, the assembly work of the tape cartridge can be facilitated, the efficiency of the assembly work can be improved, and the tape etc. can be prevented from being damaged by the side wall of the upper half during the contact work. be able to.

Furthermore, in the case of automatic assembly using an automatic assembly machine,
Since it is not necessary to perform a complicated lowering movement of the upper half relative to the lower half, the mechanism of the automatic assembly machine can be simplified and the machine can be made smaller.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a data cartridge, and FIG. 1A is a longitudinal sectional view of the main parts showing the assembly operation of the data cartridge.
FIG. 1B is a cross-sectional view of the main parts, FIG. 2 is a vertical cross-sectional view showing the state in which the belt drive roller is in contact with the drive roller on the recording/reproducing device side, and FIG. 3 is an exploded perspective view of the entire data cartridge. It is. FIG. 4 is a diagram showing another embodiment of the present invention. In addition, in the symbols used in the drawings, 1...data cartridge, 2...base plate (lower half), 3
...Case (upper half), 3a...Side wall, 4...
Cartridge body, 6... Magnetic tape, 9... Belt drive roller (rotating body), 12... Opening, 1
3... lower end portion, 14... cutting portion, 20... drive roller (driving means).

Claims (1)

[Claims for Utility Model Registration] A cartridge body consisting of an upper half fixed to a lower half and containing a tape as a recording medium, and an opening formed by cutting out a part of the side wall of the upper half. , a rotating body rotatably supported by the lower half and disposed at a position corresponding to the opening of the upper half, the rotating body being provided on the recording/reproducing device side through the opening. In a tape cartridge configured to be rotated in contact with a driving means, thereby causing the tape to run, the tape cartridge is provided with a tape from a lower end of the side wall to a surface facing the rotating body inside the side wall. When a cutting portion leading to the opening is provided and the upper half is fixed to the lower half, even if the upper half is vertically lowered to the fixed position on the lower half, the side wall of the upper half will not be attached to the lower half. A tape cartridge characterized in that the tape cartridge is configured so as not to come into contact with the rotating body that is pivotally supported.