Method of manufacturing timepiece slip mechanism

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 合成樹脂製の軸部１１ａに合成樹脂製の歯車 部１１ｃをスリップ可能に一体成形する場合に、歯車部 １１ｃが軸部１１ａに融着することなく、適度で安定し たスリップトルクを得る。 【構成】 歯車部１１ｃを軸部１１ａの接合用突出部ｃ の軸方向側の一側面を覆う形状にして、歯車部成形用の ２次成形金型の樹脂注入用ゲートＧを軸部１１ａの突出 部ｃの軸方向側一側面に対向するように設け、樹脂を樹 脂注入用ゲートＧから金型内に流し込んだ時に突出部ｃ の軸方向側の一側面にぶつかった後突出部ｃの先端側に 流れ込むようにした。 (57) [Abstract] [Purpose] When a synthetic resin gear portion 11c is integrally formed on a synthetic resin shaft portion 11a so as to be slippery, the gear portion 11c does not fuse to the shaft portion 11a and is moderately welded. Obtain stable slip torque. [Structure] The gear portion 11c is a joint projection portion c of the shaft portion 11a. And a resin injection gate G of a secondary molding die for molding the gear part is provided so as to face one side surface on the axial side of the shaft portion 11a so as to face one side surface on the axial side. When the resin is poured from the resin injection gate G into the mold, the protrusion c After colliding with one side surface of the axial direction, the fluid flows into the tip side of the protruding portion c.

Inventors

• 👤 Kanenobu Ochiai
• 👤 兼宣 落合

Bibliographic Details