JPH0480957U

JPH0480957U -

Info

Publication number: JPH0480957U
Application number: JP12459490U
Authority: JP
Priority date: 1990-11-26
Filing date: 1990-11-26
Publication date: 1992-07-14

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案の実施例に係り、
第１図は樹脂製プーリの外観形状を示す一部省略
正面図、第２図は第１図の−線に沿う断面図
であり、第３図は樹脂製プーリの成形用金型を示
す断面図、第４図は成形用金型の要部構造を拡大
して示す断面図である。また、第５図ないし第８
図は従来例に係り、第５図は樹脂製プーリの外観
形状を示す一部省略正面図、第６図は第５図の
−線に沿う断面図であり、第７図は成形用金型
を示す断面図、第８図は成形用金型の要部構造を
拡大して示す断面図である。図における符号１は樹脂製プーリ、２は成形用
金型、３は肉厚部、４は環状肉厚部、５はキヤビ
テイ、７は樹脂注入用ゲート、８は凹部、９は環
状凹溝部、１１は外側ベルト掛け部、１２は内側
ボス部、１３は環状円板部、１４は補強リブであ
る。なお、図中の同一符号は、互いに同一もしく
は相当する部品、部分を示している。 1 to 4 relate to embodiments of the present invention,
Fig. 1 is a partially omitted front view showing the external shape of the resin pulley, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a cross-sectional view showing the mold for molding the resin pulley. 4 are enlarged cross-sectional views showing the main structure of the molding die. Also, Figures 5 to 8
The figures relate to a conventional example, Fig. 5 is a partially omitted front view showing the external shape of the resin pulley, Fig. 6 is a sectional view taken along the - line in Fig. 5, and Fig. 7 is a molding die. FIG. 8 is an enlarged cross-sectional view showing the main structure of the molding die. In the figure, 1 is a resin pulley, 2 is a molding die, 3 is a thick wall part, 4 is an annular thick wall part, 5 is a cavity, 7 is a gate for resin injection, 8 is a recessed part, 9 is an annular groove part, 11 is an outer belt hanging part, 12 is an inner boss part, 13 is an annular disk part, and 14 is a reinforcing rib. Note that the same reference numerals in the drawings indicate parts and portions that are the same or correspond to each other.

Claims

[Claims for Utility Model Registration] A resin pulley having an outer belt hook part and an inner boss part arranged concentrically, and an annular disc part and reinforcing ribs that integrally connect these parts along the radial direction. A thick part is integrally formed on the back side of the annular disk part at a predetermined position facing the resin injection gate, and the thick part projects toward the back side, and the thickness of the annular disk part is A resin pulley characterized in that a ring-shaped thick part is integrally formed around a front side portion facing the front side, and extends toward the front side.