公开(公告)号：US12186949B2

公开(公告)日：2025-01-07

申请号：US17175859

申请日：2021-02-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Satoshi Fujinaka ,  Haruka Yoshioka

IPC: B29C45/16 ,  B29C45/27 ,  B29K101/12 ,  B29L15/00 ,  F16H55/06 ,  F16H55/22 ,  F16H57/00

Abstract: Provided is a method for manufacturing a rotary power transmission member including a ring-shaped main body part fixed to a rotating shaft, and a ring-shaped gear part formed on an outer circumference part of the main body part to transmit rotational force of the rotating shaft to other members. The method includes gear part molding for injecting a high melting point resin into a first mold to mold the gear part, and main body part molding for injecting a low melting point resin to mold the main body part while the gear part being inserted into a second mold. The first mold includes a runner defined on an inner circumference side of a ring-shaped cavity for molding the gear part, and a gate which communicates the runner with the cavity to supply a resin into the cavity.

公开(公告)号：US20210162639A1

公开(公告)日：2021-06-03

申请号：US17175859

申请日：2021-02-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Satoshi Fujinaka ,  Haruka Yoshioka

IPC: B29C45/16 ,  F16H55/06 ,  F16H55/22 ,  F16H57/00

Abstract: Provided is a method for manufacturing a rotary power transmission member including a ring-shaped main body part fixed to a rotating shaft, and a ring-shaped gear part formed on an outer circumference part of the main body part to transmit rotational force of the rotating shaft to other members. The method includes gear part molding for injecting a high melting point resin into a first mold to mold the gear part, and main body part molding for injecting a low melting point resin to mold the main body part while the gear part being inserted into a second mold. The first mold includes a runner defined on an inner circumference side of a ring-shaped cavity for molding the gear part, and a gate which communicates the runner with the cavity to supply a resin into the cavity.