JPH04121076U - Tape clamp structure of tape reel - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a tape reel with a structure that allows secure clamping of tape ends. [Structure] At both ends of the flange portion 2 of the clamp piece 1, a pair of non-flat thin legs 3 are formed toward the inside.
The enlarged portion 4 at the tip of the leg portion 3 has an outer side surface 4a parallel to each other, and an inner side portion 4b protruding toward the center outer circumferential side. On the other hand, the hub 10 is formed with a notch into which the enlarged part 4 fits, and the inner part thereof is a fitting recess 11. The outer locking portion 11a that locks and the inner locking portion 11b that locks the inner portion 4b of the enlarged portion 4 form an inner locking portion 11b that locks, and the outer locking portion 11a is provided closer to the inner peripheral side of the hub 10 than the inner locking portion 11b. ing.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a tape reel for winding magnetic tape, etc. This invention relates to a tape clamp structure for lamps.

0002

[Conventional technology]

Utility Model Publication No. 63-36552 as a tape reel for winding conventional magnetic tape. There are some things listed in the report, etc. The tape clamp structure of this tape reel is As shown in FIG. 6, legs 10 are attached to both sides of the flange portion 102 of the clamp piece 101. 3, and an engaging part 104 is formed at the tip of this leg part 103, while a hub 110 A clamp groove 111 is formed in the clamp groove 111, and this clamp groove 111 is partitioned by a central protrusion 112. This creates a substantially inverted U-shaped notch into which the engaging portion 104 of the clamp piece 101 can fit. 113 and inner end portions 104a of the engaging portion 104 on both sides of the central protrusion 112. The notch 1 of the clamp groove 111 is formed by forming an undercut portion 114 that can be engaged with. By fitting the engaging part 104 of the clamp piece 101 into the tape T end I'm trying to clamp it.

0003

[Problem that the idea aims to solve]

However, in the conventional tape clamp structure as described above, the clamp so that the inside of the engaging part of the pull piece is locked with the undercut part provided on the central protrusion. However, the notch side surface that the outside of the engaging part contacts is straight and has a locking part. Because there is no cutout on the outside of the engaging part when the tensile force on the tape is strong. The end of the tape may come off the hub.

0004

[Means to solve the problem]

In order to solve the above problem, this invention has thin legs on both the left and right sides of the clamp piece. The hub is formed with a fitting recess into which these enlarged parts fit. In addition, there is an outer locking part where the outside of the enlarged part is locked in the fitting recess, and an inner side where the inside is locked. A locking portion is formed, and the outer locking portion is provided closer to the inner circumference of the hub than the inner locking portion. I made it.

[0005]

[Effect]

Pull the clamp piece onto the tape with the enlarged part fitted into the fitting recess of the hub. When force is applied, the outer locking part is located closer to the inner circumference of the hub than the inner locking part. Then, the ampullae deforms (rotates) outward and securely fixes the tape end.

[0006]

【Example】

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, Figure 1 is based on the present invention. Figure 2 is a plan view of the main parts of a tape reel to which such a tape clamp structure is applied. Figure 3 is a plan view of a main part of a hub with the same clamp structure. Figure 4 is a plan view of the main parts of the clamping process of the same clamp structure, and Figure 5 is the operation of the same clamp structure. FIG.

[0007] First, the clamp piece 1 is attached to both ends of the flange portion 2 that forms part of the outer circumference of the hub. Thin legs 3, 3 are formed non-parallelly toward the 4, 4 is formed. The enlarged portions 4, 4 form parallel outer surfaces 4a, 4a, The inner parts 4b, 4b are made to protrude toward the center outer circumferential side.

[0008] On the other hand, the hub 10 has a substantially L-shaped shape into which the enlarged portions 4, 4 of the clamp piece 1 can fit. A notch is formed and the deep part thereof is used as a fitting recess 11, 11, and the fitting recess 11, 11 There is an outer locking portion near the entrance where the outer surface 4a of the enlarged portion 4 of the clamp piece 1 locks. 11a and the inner side part 4b of the enlarged part 4 form an inner locking part 11b, and the outer side The locking portion 11a is provided closer to the inner peripheral side of the hub 10 than the inner locking portion 11b.

[0009] Therefore, when clamping the end of the tape, the enlarged portions 4, 4 of the clamp piece 1 are Align the clamp piece 1 with the fitting recesses 11, 11 of the hub 10 as shown in Fig. 4. This is done by pressing in the direction of arrow A shown.

0010 At this time, the inner side 4b of the enlarged part 4 comes into contact with the inner locking part 11b of the fitting recess 11. . If you press the clamp piece 1 further, the thin leg part 3 will easily deform. , the entire enlarged portion 4 rotates in the direction of arrow B in the same figure, and the entire enlarged portion 4 rotates from the entrance of the fitting recess 11 to the fitting recess 1. Enter within 1. At this time, as shown in FIG. 1, the inner part 4b of the enlarged part 4 is 11b and push it in until the outer surface 4a of the enlarged part 4 passes the outer locking part 11a. When the ampulla 4 attempts to restore its original state, the medial portion 4b It is locked to the stop part 11b, and the corner of the outer surface 4a and the leg part 3 is locked to the outside stop part 11a. Ru.

[0011] At this point, a tensile force is applied to the end of the tape that is being clamped, and the tape is clamped as shown in Figure 5. When a force in the direction of arrow C acts on both sides of the lamp piece 1, the clamp piece 1 expands. The large portion 4 rotates in the direction of arrow D around the inner portion 4b that engages with the inner locking portion 11b. However, at this time, the outer surface 4a is caught on the outer locking part 11a, so the tape is not pinched. The enlarged portion 4 will not come off from the fitting recess 11.

0012

[Effect of the idea]

As explained above, according to the present invention, the large part of the clamp piece is fitted into the fitting recess of the hub. When a tensile force is applied to the tape while it is fitted inside the part, the enlarged part will be pulled outside the locking part. The outer locking part that locks the inside of the enlarged part is set closer to the inner circumference of the hub than the inner locking part that locks the inside of the enlarged part. When the ampullae rotates outward, it is locked by the outer locking part and clamped. The pieces will not come off and the tape ends can be securely fixed.

[Brief explanation of the drawing]

[Fig. 1] A plan view of the main parts of a tape reel to which the tape clamp structure according to the present invention is applied.

[Figure 2] Plan view of a clamp piece with the same clamp structure

[Figure 3] Plan view of main parts of the hub with the same clamp structure

[Figure 4] Plan view of main parts of the clamping process of the same clamp structure

[Fig. 5] A plan view for explaining the operation of the clamp structure.

[Figure 6] Plan view of the clamp section of a conventional tape reel

[Explanation of symbols]

1... Clamp piece, 2... Flange part, 3... Leg part, 4...
Ampulla, 4a...Inner part, 4b...Outer surface, 10...Hub, 1
1... Fitting recessed part, 11a... Outer locking part, 11b... Inner locking part.

Claims (2)

[Scope of utility model registration request] 1. A tape reel in which an elastic clamp piece is fitted into a notch formed in a cylindrical hub to lock an end of a magnetic tape, etc., in which thin legs are provided on both sides of the clamp piece. An enlarged portion is provided through the hub, and a fitting recess into which the enlarged portion fits is formed in the hub, and the fitting recess has an outer locking portion to which the outside of the enlarged portion engages, and an outer locking portion on which the inner side of the enlarged portion engages. An inner locking portion is formed, and the outer locking portion is positioned closer to the inner circumferential side of the hub than the inner locking portion so that the fitting recess deforms outward in the fitted state. Tape clamp structure of tape reel. 2. A pair of legs provided on both sides of the clamp piece extend in the closing direction toward the center of the hub, and the pair of enlarged portions extend in the closing direction toward the outer periphery of the hub. 2. The tape clamp structure for a tape reel according to claim 1, wherein outer surfaces of the portions are substantially parallel.