JPH0743816Y2 - Tape reel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a tape reel of a type in which an upper reel is fitted to a lower reel so that they can be integrally combined.

[Conventional technology]

Conventionally, as a tape reel of this type, for example, SAIKAI Sho 58
The one described in JP-A-23086 is known.
Referring to FIG. 2 and FIG. 2, a lower reel 1 has a plurality of arc-shaped beam portions 1b on the upper surface of the boss portion 1a at equal angular intervals with respect to the center of the boss portion 1a inside and outside in the radial direction. It is formed to have flexibility on the circumference, and each beam part
An inward facing claw 1c is integrally formed at the center of the longitudinal direction of 1b. Reference numeral 2 denotes an upper reel, which comprises an opening 2a through which the claw 1c can be inserted at a position corresponding to the claw 1c of the lower reel 1, and a tongue piece 2b facing the inside of the opening 2a and capable of engaging with the claw 1c. A plurality of engaging portions are formed. According to such a configuration,
By pressing and pressing the upper reel 2 against the lower reel 1 so that the opening 2a of the upper reel 2 is aligned with the claw 1c of the lower reel 1, each claw 1c of the lower reel 1 flexes the beam portion 1b. Enter the opening 2a while deforming outward in the radial direction based on the
After that, the upper reel 2 can be integrally combined with the lower reel 1 by restoring and engaging with the tongue piece 2b (see FIG. 2). Therefore, after that, the upper reel 2 is turned upward, that is, the arrow A.
When a relatively weak external force is applied in the direction, the claw 1c itself tends to deform slightly outward, that is, in the direction of the arrow B. At this time, the beam portion 1b is centered on the connection portion with the boss portion 1a. And a reaction force directed in the direction of arrow C acts, so that the claw 1c is caused to engage with the tongue piece 2b of the upper reel 2 more deeply,
Thus, the upper reel 2 is securely held by the lower reel 1 and does not come off.

[Problems to be solved by the device]

However, the arrow A appears on the upper reel 2 due to, for example, dropping.
When a relatively strong external force is applied in the direction, since the beam portion 1b has an arc shape, the stress acting on the beam portion 1b is not evenly distributed and the boss portion 1a becomes the center of the rotation. Since the beam concentrates on the connection part, the beam part 1b may be torn at that position, which is a practical problem.

In view of such circumstances, the present invention causes the upper reel to come off from the lower reel even when a relatively strong external force is applied to the upper reel, and the beam portion is damaged in the peripheral region of the claw of the lower reel. The object is to provide a tape reel that does not have a problem.

[Means and Actions for Solving the Problems]

In the tape reel according to the present invention, a plurality of linear beam portions having rigidity in the twisting direction are formed on the upper surface of the boss portion of the lower reel by cutting out a part of the upper surface of the boss portion. And a claw facing inward in the longitudinal center of each beam is integrally formed so that the lower surface thereof is flush with the upper surface of the boss portion of the lower reel, and the claw is attached to the upper reel. The upper reel is integrally fixed to the lower reel by engaging with the provided engaging portion.

Therefore, according to the present invention, even when an external force is applied upward to the upper reel due to, for example, dropping, the beam portion supporting the claw is formed in a linear shape, and thus the stress acting on the beam portion is specified. The beams are not evenly concentrated in the parts and are evenly distributed, so that the beams are not broken.

〔Example〕

An embodiment of the tape reel according to the present invention will be described below with reference to FIGS. 3 and 4. In FIGS. 3 and 4, reference numeral 11 denotes a lower reel, and a plurality of linear beam portions 11b are arranged on the upper surface of the boss portion 11a at equal angular intervals on the upper surface of the boss portion 11a on the inner side and outer side in the radial direction. The notch is formed in a direction orthogonal to the radial direction of the boss portion 11a so as to have rigidity in the twisting direction, and the inward facing claw is formed in the longitudinal center portion of each beam portion 11b. 11c is integrally formed so that its lower surface is at the same height as the upper surface of the boss portion 11a of the lower reel 11 (see FIG. 4), and is shown in FIGS. 1 and 2. Similarly formed tongue piece 2b of the engaging portion of the reel 2
Is adapted to engage with.

Since the tape reel according to the present invention is constructed as described above, the upper reel 2 and the lower reel 11 are connected to each other by the beam portions of the lower reel 11 as in the conventional example shown in FIGS. 11
This is done by deforming b, but in this case, the tongue 2
As shown in FIG. 4, b is in a state of being fitted into the opening 11d formed in the upper surface of the boss portion 11a. Thus, when an external force is applied to the upper reel 2 in the upward direction, that is, in the arrow A direction after the upper and lower reels are combined, the claw 11c itself tends to deform slightly outward, that is, in the arrow B'direction. 11b receives a stress in the direction of arrow C'because of its reaction force, but since the stress is dispersed due to the rigidity of the beam portion 11b itself, the beam portion 11b is not deformed, so that the claw 11c has a fourth position. The engaging portion of the upper reel 2 shown in the figure is stationary in the engaged state with the tongue piece 2b, and thus the upper reel 2 is securely held by the lower reel 11 and is not disengaged. . Moreover,
Even if a relatively strong external force is applied to the upper reel 2 in the direction of the arrow A ′ due to, for example, dropping, the stress acting on the beam portion 11b is concentrated on a specific portion because the beam portion 11b is formed in a straight line. Since it can be evenly dispersed without doing so, the beam portion 11b will not be torn.

[Effect of device]

As described above, according to the present invention, a plurality of linear beam portions are formed on the upper surface of the boss portion of the lower reel at equal angular intervals by notching the upper surface of the boss portion inside and outside in the radial direction. Claws are formed in a direction orthogonal to the radial direction of the boss so as to have rigidity in the twisting direction, and inwardly facing claws are integrally cut out at the longitudinal center part of each beam part. The lower surface of the lower boss is located at the same height as the upper surface of the boss portion of the lower reel, so that even if an external force is applied upward to the upper reel due to, for example, dropping, the beam portion that supports the claw is linear. Since the stress is applied to the beam portion, the stress acting on the beam portion is evenly distributed without being concentrated on a specific portion, so that the beam portion is not broken and damaged, which is extremely effective.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the structure of the main part of an example of a conventional tape reel, FIG. 2 is an enlarged cross-sectional view of the main part showing the engaged state of the upper and lower reels of the conventional example shown in FIG. 1, and FIG. FIG. 4 is an exploded perspective view showing an essential configuration of an embodiment of a tape reel according to the present invention, and FIG. 4 is an enlarged sectional view of an essential part showing a combined state of upper and lower reels of the embodiment shown in FIG. 11 ... Lower reel, 11b ... Beam part, 11c ... Claw, 2 ... Upper reel, 2a ... Engagement part opening, 2b ... Tongue piece.

Claims (1)

[Scope of utility model registration request] 1. A linear shape having rigidity in a plurality of twisting directions by notching a part of the upper surface of the boss (11a) on the upper surface of the boss (11a) of the lower reel (11). Beam part (11b)
Is formed, the lower surface of the lower reel (11) has a claw (11c) facing inward at the longitudinal center of each beam (11b).
By integrally engaging the claw (11c) with the engaging part (2a) provided on the upper reel (2) so as to be flush with the upper surface of the boss (11a) of Lower reel (1
A tape reel characterized in that the upper reel (2) is integrally fixed to the (1).