JPS6186367U

JPS6186367U -

Info

Publication number: JPS6186367U
Application number: JP17041284U
Authority: JP
Priority date: 1984-11-12
Filing date: 1984-11-12
Publication date: 1986-06-06
Also published as: JPH0237798Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例であるコアの斜視図
である。第２図はその正面図であり、第３図は第
２図におけるＡ−Ａ′部断面図である。第４図〜
第１０図は第１図のコアにおいてリブの形状を変
えた各種の例を示す部分断面図であり、第４図は
現行品の例を、そして第５図〜第１０図は各種実
施例をそれぞれ示している。第１１図は従来のコ
アの一例の正面図であり、第１２図はそのＢ−Ｂ
′部断面図である。第１３図は他の従来例の部分
斜視図である。１……外円筒、２……内円筒、３……円環板、
４０……リブ（現行品）、４ａ，４ｂ，４ｃ，４
ｄ，４ｅ，４ｆ……リブ（実施例）、４１……隅
角部、４２……円環板側の端縁、４３……外端縁
中央部、５ａ，５ｂ，５ｃ，５ｄ，５ｅ，５ｆ…
…切欠部、６……溝、７……スリツト状溝。 FIG. 1 is a perspective view of a core that is an embodiment of the present invention. FIG. 2 is a front view thereof, and FIG. 3 is a sectional view taken along line AA' in FIG. Figure 4~
Fig. 10 is a partial sectional view showing various examples of the core shown in Fig. 1 with different rib shapes, Fig. 4 shows an example of the current product, and Figs. 5 to 10 show various examples. are shown respectively. FIG. 11 is a front view of an example of a conventional core, and FIG. 12 is a front view of an example of a conventional core.
FIG. FIG. 13 is a partial perspective view of another conventional example. 1... Outer cylinder, 2... Inner cylinder, 3... Annular plate,
40...Rib (current product), 4a, 4b, 4c, 4
d, 4e, 4f... Rib (example), 41... Corner portion, 42... End edge on the annular plate side, 43... Center portion of outer edge, 5a, 5b, 5c, 5d, 5e, 5f...
...Notch, 6...Groove, 7...Slit-shaped groove.

Claims

[Claims for Utility Model Registration] (1) The axes of the outer cylinder and the inner cylinder are made to coincide with each other, and a circular plate positioned perpendicularly to the axes extends between the substantially central portions of both cylinders. In a core for a belt-shaped body made of injection molded thermoplastic resin, the core is made of a thermoplastic resin and has a plurality of ribs arranged on both sides of the annular plate in a substantially bilaterally symmetrical manner and in a radial direction from the axis. A core for a band-shaped body, characterized in that notches are provided on the outer end sides of all the ribs, and the notches of most of the ribs have substantially the same shape. (2) The area of the notch is 20 to 70 of the total area of the rib.
% of the core for a belt-shaped body according to claim 1 of the utility model registration claim. (3) The core for a belt-shaped body according to claim 1, wherein the cutout portion extends over the entire width of the inner cylinder and the outer cylinder.