JP2000322865A - Tape cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate workability when obtaining a pin-shaped leader member that is intended to replace a leader block, which requires to have sufficient precision, to be used for drawing out a tape in a one-reel type tape cartridge,. SOLUTION: In a tape cartridge, one tape reel around which a tape is wound is rotatably accommodated within a case body, and the starting end of the tape is fixed to a leader member and drawn out through an opening provided at the case main body toward an apparatus by means of a tape drawing member. In this case, the leader member is composed of a pin-shaped member and a clamp member having a substantially C-letter shape. The pin member is formed by providing a tape accommodating section 91, a first collar section 92, a secured section 93, and a second collar section 94 in this order from the center of the leader member toward the outside. The pin member is formed by combining a plurality of members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a one-reel type tape cartridge used for a magnetic recording / reproducing apparatus.

[0002]

2. Description of the Related Art One reel type tape cartridges have been proposed in Japanese Patent Application Laid-Open No. 58-171773. FIG. 6 is a plan view showing a one-reel type cartridge 100 disclosed in the publication, in which a magnetic tape 106 wound around a single reel including a rotating hub 104 and a flange 108 is housed inside a case 102. , Case 102
A block receiving recess 118 is provided in an opening 160 provided at one corner of the head, and a leader block 116 for tape insertion is removably fitted therein. Leader block 116
Is formed with a recess 150 for locking the leading end of the magnetic tape 106 by a locking pin 152. Further, a concave portion 154 is provided on an outer surface side of the leader block 116 for receiving and locking a drawer pin which can enter from the recording / reproducing apparatus side and pull out the leader block 116.

When the cartridge 100 is used, an automatic insertion mechanism on the apparatus side operates to cause a pull-out pin (not shown) to first enter the concave portion 154 and lock the leader block 116, and then pull out the leader block 116. The leader block 116 is inserted along a predetermined tape running path of the apparatus, and finally, the leader block 116 is stored and fixed in a receiving portion provided on the outer periphery of the hub of the take-up reel on the apparatus side. In the case of rewinding, the leader block 116 is returned to the opening (the position shown) of the cartridge 100 by following the reverse path.

[0004]

As described above, in the conventional tape cartridge, the leading end of the tape is fixed to the leader block 116. Since the leader block forms a part of the outer peripheral surface of the reel which moves into the apparatus and winds up the tape, it needs to have high precision, and it is costly to provide it for all cartridges. Therefore, instead of this, it is conceivable that the leading end of the tape is attached to a pin-shaped leader member so that the function of the leader block is provided on the apparatus side, and only the leader member is used in the cartridge for pulling out the tape.

However, since the pin-shaped leader member has a complicated structure having a portion (holding portion) that can be captured by the pull-out mechanism on the device side in addition to the tape mounting portion, high precision and strength are required. If the entire pin member is formed by cutting from a metal material, the cost increases. This point will be described in more detail. FIG. 2 shows a leader member 8 which is an alternative to the above-mentioned conventional example. The leader member 8 is a C-shaped clip member 8 which presses and stops the tape 6 around the pin member 9.
1, the pin members 9 are provided on both sides of the center tape mounting portion 91 in order from the tape mounting portion 91 side,
There is a held portion 93 and a second flange portion 94. As described above, it takes time (cost) to integrally form a pin member having a plurality of flanges with, for example, metal with high accuracy. In particular, since the first flange portion 92 has a thickness of about 0.1 to 0.3 mm, it is troublesome to cut out other portions while leaving this portion. The object of the present invention is therefore to solve this problem.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided an opening provided in a case body in which a tape reel having a tape wound therein is rotatably accommodated in a case body, and a leading end of the tape is fixed to a leader member. A tape cartridge pulled out to the apparatus by a tape pull-out member, wherein the leader member is composed of a pin member and a substantially C-shaped clamp member, and the pin member has a tape mounting portion in the center, first flange portions on both sides thereof, A held portion is formed on the outside, and a second flange is formed on the outside, and the pin member is formed by combining a plurality of members. Preferably, the first flange is formed separately. Preferably, the tape mounting portion is made of plastic, and the held portion is made of metal.

[0007]

As described above, the first flange portion of the pin member and the remaining portion are separately formed, or the tape mounting portion, the first flange portion, the mounted portion, and the second flange portion are provided. By forming the part separately, the production of the pin member becomes easy. Further, since the materials of the tape mounting portion and the held portion can be changed in these, each can be made to correspond to the function.

[0008]

FIG. 1 is an exploded perspective view of a tape cartridge according to an embodiment of the present invention. In this cartridge, one tape reel 3 around which a tape is wound is rotatably housed in a main body case composed of an upper case 1 and a lower case 2. The lower case 2 is provided with an opening 21 into which the drive shaft of the device is inserted. The upper and lower cases 1 and 2 have openings 12 and 22 for drawing out the tape, respectively, and when the upper and lower cases are combined, one opening is formed.

The tape reel 3 has a hub 32 integrally formed with an upper flange 31 and a lower flange 33, and a metal plate 7 made of a soft magnetic material is integrally provided on the lower surface of the hub 32. Engaging teeth (not shown) are provided around the metal plate 7 to engage with the drive shaft of the apparatus. The metal plate 7 is magnetically attracted to the drive shaft of the apparatus, and the tape reel 3 rotates. Since the tape is directly adhered to the outer peripheral surface of the hub with water or the like, no fixing member for fixing the tape is provided. The inner surface of the hub 32 has an engaging tooth portion 35, which is pressed in the axial direction by the brake spring 4 but does not rotate.
To prevent unnecessary rotation of the tape reel 3 when not in use.

The reel brake 5 has teeth 51 on the lower surface side and engages with the engagement teeth 35 of the hub 32. The reel brake 5 is constantly pressed to the brake position by the brake spring 4. The projection 52 of the reel brake 5 can be reliably moved up and down between a brake position and a brake release position by a position regulating portion (not shown) provided on the inner surface of the upper case 1. When mounted on the device, the magnetized suction plate, which constitutes a part of the drive shaft on the device side, rises to attract the metal plate 7 and the brake release member of the device causes the reel brake 5 to resist the brake spring 4. Then, the tape reel 3 can be rotated by lifting it upward to release the engagement with the tape reel 3. The tip of the magnetic tape is fixed to the leader member 8. The leader member 8 includes the pin member 9 and the plastic C-shaped clamp 81 as described with reference to FIG. When the cartridge is mounted on the apparatus, the leader member 8 is held by the holding member on the apparatus side, and the tape is pulled out.

[0011]

Embodiment 1 FIGS. 3 and 4 show a first embodiment of a pin member 9 according to the present invention. The pin member 9 has a tape mounting portion 91 at the center, and a first flange portion 92 on both sides thereof in order from the tape mounting portion 91 side.
There is a held portion 93 and a second flange portion 94. As shown in FIG. 4, the tape mounting portion 91, the first flange portion 92, the held portion 93, and the second flange portion 94 are formed by different members.

The first flange 92 can be easily formed by stamping a metal by press molding or plastic molding. On the other hand, female threads are formed at both ends of the tape mounting portion 91 and male threads are formed at the inner ends of the held portion 93 and the second flange portion 94 so that the first flange portion 92 can be incorporated. . The pin member 9 is assembled by combining these three (five) components. That is, the first flange portion 92 is sandwiched between the tape mounting portion 91 and the held portion 93 and the second flange portion 94, and is assembled by screwing them together, and integrally fixed as shown in FIG. Is done.

A female screw is formed on the tape mounting portion 91 side as a concave portion, and a male screw is formed on the held portion 93 side.
This relationship may be reversed. Also, instead of screwing,
It may be fixed by press fitting (fitting). The material of the component is preferably a metal because the held portion 93 is engaged with and disengaged from the device, but the tape mounting portion 91 is subjected to a large force at the portion where the tape is fixed, or is disengaged from the device. Therefore, it is also possible to use plastic such as polyacetal, polycarbonate and nylon.

Embodiment 2 FIG. 5 is a view showing another embodiment. This is the first collar 9
This is an example in which only 2 is separated. The tape mounting portion 91, the held portion 93, and the second flange portion 94 are integrally formed of metal. A groove 91 is provided in a portion where the first flange 92 is mounted.
a is formed, and the first flange portion 92 is also provided with a cutout portion 92a, and these portions are fitted and assembled at these portions.

[0015]

As described above, the pin member of the present invention can be easily manufactured by forming the first flange portion as a separate body. Further, since the material of the tape mounting portion and the material of the held portion can be changed, it is possible to configure an optimum pin member corresponding to each function.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a tape cartridge according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a leader member.

FIG. 3 is a perspective view of a pin member.

FIG. 4 is an exploded perspective view of a pin member.

FIG. 5 is a perspective view showing another embodiment.

FIG. 6 is a plan view of a conventional one-reel cartridge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper case 2 Lower case 3 Tape reel 4 Brake spring 5 Reel brake 6 Tape 8 Leader member 9 Pin member 81 C-shaped clamp 91 Tape mounting part 92 First flange 93 Held part 94 Second flange

Claims (3)

[Claims] 1. A tape reel having a tape wound therein is rotatably accommodated in a case body, and a leading end of the tape is fixed to a leader member, and is withdrawn from an opening provided in the case body to a device by a tape pull-out member. In the tape cartridge, the leader member includes a pin member and a substantially C-shaped clamp member. The pin member has a tape mounting portion in the center, a first flange portion on both sides thereof, a held portion on the outside thereof, and A tape cartridge, wherein a second flange portion is formed outside the tape cartridge, and the pin member is formed by combining a plurality of members. 2. The tape cartridge according to claim 1, wherein said first flange portion is formed separately. 3. The tape cartridge according to claim 1, wherein the tape mounting portion is made of plastic, and the held portion is made of metal.