JP2526624Y2 - Tape pad - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape pad installed on a tape running path such as a magnetic tape cassette for a video or a cleaning tape cassette.

2. Description of the Related Art Conventionally, a tape pad for pressing a tape is provided in a tape traveling path in a tape cassette case in order to prevent the tape from being loosened and to ensure the running stability. As such a tape pad, for example, in a video tape cassette, a rectangular leaf spring as shown in FIG. 5 is used. In the drawing, 10 is a tape pad, 12 is a contact portion on one end side, and 14 is a mounting portion on the other end side. The mounting portion 14 has mounting holes 16 and 18 at two intervals.
At the center of the tape pad 10, there is a square hole 20 serving as an opening for light transmission.

When the tape pad 10 is installed on the traveling path of the magnetic tape, the support member provided on the case is inserted into the mounting holes 16 and 18. Then, the plate members of the mounting portion 14 alternately protrude in both directions to fasten the support member and attach it there. In addition, the contact portion 12 comes into contact with the magnetic tape and presses the magnetic tape against a guide member provided on the case.

Usually, such a tape pad is formed by cutting a long member, and for example, five tape pads 24 are taken from the long member 22 as shown in FIG. At that time, punching is performed first, and all the mounting holes 26 and 28 and the square holes 30 of each tape pad 24 are formed. Thereafter, the long member 22 is sequentially cut at a constant pitch corresponding to the position of each dotted line 32 while being fed in the arrow direction.

However, when each tape pad 24 is formed by cutting at a constant pitch in this way, if the feeding position in the mold is inappropriate, as shown in FIG. The widths t1 and t2 of the beams 38 and 40 that connect the mounting portion 34 and the contact portion 36 on both sides of the square hole 30 provided at the center portion are not equal. For this reason, the spring force of both beams 38 and 40 is different,
The hits on the 36 magnetic tapes are uneven. Therefore, the pad pressure acts unevenly on the magnetic tape and concentrates on a part of the tape, making the tape running unstable, causing the tape to rise, causing damage such as tape damage and dropout due to generation of shavings. It will be easier.

The present invention has been made in view of such a conventional problem, and shows a state of both beams connecting a mounting portion and a contact portion on both sides of an opening provided in a central portion of a tape pad stored in a case. An object of the present invention is to provide a tape pad that stabilizes tape running and does not cause trouble in a tape or a mechanism by improving.

Means for Solving the Problems Means for achieving the above object will be described below with reference to FIGS. 1, 2, and 3 corresponding to the embodiments.

The tape pad 42 is installed on the traveling path of the tape 62 housed in the case 70 so as to press the tape 62 against the tape 62. One end of the tape pad 42 is a contact portion 44, and the other end is a mounting portion. 46, mounting holes 48 and 50 are provided at a plurality of locations at intervals, and a leaf spring having an opening 52 in the center is used, and a supporting member 64 provided in the case 70 is inserted through the mounting holes 48 and 50. The plate members of the mounting portion 40 are alternately projected in both directions, and the contact portions 44 thereof are in contact with the tape 62. Then, recesses 58 and 60 corresponding to the openings 52 are provided on outer sides of both beams 54 and 56 that connect the mounting portion 46 and the contact portion 44 on both sides of the opening 52 provided at the center of the tape pad 42. The widths t3 and t4 of the beams 54 and 56 are made substantially equal.

Further, the tape pad 74 housed in the case is provided with the mounting holes 76, 78,
It is preferable to form the long member 72 by cutting at a constant pitch corresponding to the position of each dotted line 84 after punching a hole 82 forming a recess by a punching process.

Action Both beams 54 and 56 of the tape pad 42 are configured as described above.
When the recesses 58 and 60 corresponding to the openings 52 are provided on the outer sides of the beams and the widths t3 and t4 of the beams 54 and 56 are substantially equal, the spring forces of the beams 54 and 56 are approximately equal. , Contact part
The hit of the 44 against the tape 62 is equalized. Therefore, the pad pressure uniformly acts on the tape 62, and the tape running is stabilized.

Also, the mounting holes 76, 78,
Along with the opening 80, after punching a hole 82 that forms a recess, the long member 72 is cut at a constant pitch corresponding to the position of each dotted line 84, and the feeding position in the mold is inappropriate. Even if there is variation, the widths of both beams of each tape pad 74 can be formed substantially equal, and there is no waste of material.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a process of installing a tape pad for a video tape cassette to a case to which the present invention is applied, and FIG. 2 is a front view showing a state before the tape pad is assembled. In FIG. 2, reference numeral 42 denotes a tape pad made of a rectangular leaf spring, 44 denotes a contact portion at one end thereof, and 46 denotes a mounting portion at the other end thereof. In the mounting portion 46, elongated mounting holes 48 and 50 are provided side by side in parallel at symmetrical positions at an interval, and a rectangular rectangular hole 52 extending left and right becomes a light transmission opening at the center in the center. Is provided. Also, on the outer sides of both the left and right beams 54, 56 connecting the mounting portion 46 and the contact portion 44, recesses 58, 60 respectively corresponding to the square holes 52 are provided, and the widths t3, Make t4 equal. In addition, if the square hole 52 is provided in the center of the tape pad 42, not only can the leader tape which passes through the light and is connected to both ends of the magnetic tape be detected,
A thick leaf spring is used for the tape pad 42 to increase the overall mechanical strength and adjust the spring force to make the pad pressure appropriate and prevent the central portion from bulging.

When the tape pad 42 is to be incorporated into the running path of the tape stored in the case, the tape pad 42 is moved in the direction of the arrow as shown in FIG. In the drawing, 62 is a magnetic tape, 64 is a member for supporting the tape pad 42, and 66 and 68 are guide members for guiding the magnetic tape 62 to form a tape running path. These support and guide members 64, 66, 68 are all cylindrical and are arranged at predetermined positions on the inner bottom surface of the case 70. To incorporate the tape pad 42, firstly, the mounting hole 48,
50 is inserted from the tip of the support member 64, and each of the holes 48, 50
The support member 64 is inserted through the support member. Then, the plate members of the mounting portion 46 alternately protrude in both side directions, apply a spring force to the support member 64 from both sides, tighten and mount the support member 64 thereon. For this reason, the support structure of the tape pad 42 has a high mechanical strength. Then, the contact portion 44 comes into contact with one surface of the magnetic tape 62 to exert a spring force, and the magnetic tape 62 is attached to the guide member 68 on the opposite side.
Press 62 for pressure contact. At that time, the widths t3 and t4 of both beams 54 and 56 connecting the mounting portion 46 and the contact portion 44 on both sides of the square hole 52 provided at the center of the tape pad 42 are equal, and their spring forces are also equal. The contact of the contact portion 44 with the magnetic tape 62 is equalized. Therefore, the pad pressure uniformly acts on the magnetic tape 62, and the magnetic tape 62 can be prevented from being loosened, and the running stability is improved.

Such a tape pad is preferably formed by cutting a long member made of an elastic plate material such as plastic. For example, as shown in FIG. 3, five tape pads 74 are taken from the long member 72. At this time, a punching process is performed, and the mounting holes 76 and 78, the square holes 80, and the holes 82 forming the recesses, which are previously indicated by oblique lines, of all the tape pads 74 are formed. Thereafter, while the long member 72 is being fed in the direction of the arrow, it is sequentially cut at a constant pitch corresponding to the position of each dotted line 84. At this cutting time, if the feeding position in the mold is inappropriate and uneven, and the recesses 86 and 88 are formed on each side of the tape pad 74 as shown in FIG. No. However, the widths t5 and t6 of the beams 94 and 96 connecting the mounting portion 90 and the contact portion 92 are always equal. Incidentally, even if the cut portion moves within the width of the hole forming the recess, the widths of both beams are always equal, and there is no waste of material. Thus, each width t of both beams 94 and 96 of the tape pad 74
When the t5 and t6 are equal, the spring force is also equal, so that the contact of the contact portion 92 against the magnetic tape is equalized, and the pad pressure can be applied uniformly. In addition, even when the running test is performed, the tape does not rise and there is no generation of tape scratches and shavings.

According to the present invention described above, recesses corresponding to the openings are respectively provided on the outer sides of both beams connecting the mounting portion and the contact portion on both sides of the opening provided in the center portion of the tape pad, Since the widths of both beams are formed substantially equal, it is easy to form the widths of both beams substantially equal.By making the spring forces of both beams substantially equal, the contact of the contact portion with the tape is equalized, and the pad pressure is reduced by the tape pressure. Acts uniformly. Therefore,
The running of the tape is stabilized, the influence on the tape is improved, no trouble occurs, and the reliability is improved.

In addition, if recesses corresponding to the openings are provided on the outer sides of both beams of the tape pad, using a long member, the holes for forming the recesses are first punched out together with the mounting holes and openings for each tape pad. After opening at a certain pitch, cutting at a constant pitch makes it possible to form the widths of both beams of each tape pad approximately equal, even if the feeding in the mold is inappropriate and fluctuates. There is no convenience.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a process of assembling a tape pad for a video tape cassette to a case to which the present invention is applied,
FIG. 2 is a front view showing a state before the tape pad is assembled. FIG. 3 is a front view showing a state before a similar tape pad is cut from a long member, and FIG. 4 is a front view showing one tape pad formed by the cutting. FIG. 5 is a front view showing a conventional tape pad for a video tape cassette. FIG. 6 is a front view showing a state before a similar tape pad is cut from a long member, and FIG. 7 is a front view showing one tape pad formed by the cutting. 42, 74 ... tape pad, 44, 92 ... contact part, 46, 90 ... mounting part, 48, 50, 76, 78 ... mounting hole, 52, 80 ... square hole, 54, 56,
94, 96 ... beam, 58, 60, 86, 88 ... recess, 62 ... tape, 64
... Support member, 70 ... Case, 82 ... Hole forming recess, 84 ...
Cutting position, t3, t4, t5, t6 ... Beam width

Claims (2)

(57) [Scope of request for utility model registration] 1. A traveling route of a tape stored in a case,
A plate in which a tape pad for pressing the tape is placed, one end of the tape pad is a contact portion, and the other end is a mounting portion, a plurality of mounting holes are provided at intervals, and a center portion is provided with an opening. In a tape pad in which a support member provided on a case is inserted into the mounting hole using a spring, and plate materials of the mounting portion are alternately projected in both side directions, and the contact portion is in contact with a tape, the center of the tape pad A tape pad characterized in that recesses corresponding to the openings are provided on the outer sides of the beams connecting the mounting portion and the contact portion on both sides of the opening provided in the portion, and the widths of the beams are substantially equal. 2. A long member is formed by punching holes for forming mounting holes, openings and recesses of a plurality of tape pads in a long member, and then cutting the long member at a constant pitch. The tape pad according to claim 1, wherein: