Title:
回転軸と回転部材の固定構造
Document Type and Number:
Japanese Patent JP7055085
Kind Code:
B2
Abstract:
To surely maintain a fixed state of a rotary member and rotary shaft formed of a fragile material even with age.SOLUTION: A fixed state 1 of a balance staff 10 and a rotary member 20, comprises: the balance staff 10 that is formed of a non-fragile material; the rotary member 20 which is formed of a fragile material, and includes an idling hole 24 into which the balance staff 10 (a second shaft part 12) is loosely inserted, and a notch 25 in a shape different from that of the other part in a peripheral direction, at one part of the peripheral direction around a shaft C of the balance staff 10; and a collet hedge 30 which is formed of a non-fragile material and includes a fitting hole 32 into which the balance staff 10 is tightly inserted, and which regulates a movement of the rotary member 20 in a shaft C direction. In the collet hedge 30, a convex part 33 is formed which engages with the notch part 25 due to rotation of the balance staff 10.SELECTED DRAWING: Figure 2
Inventors:
Fukuda Masahiro
Takashi Ozawa
Tsuchiya Kenji
Yusuke Furuuchi
Atsushi Watanabe
Shinpei Fukaya
Takashi Ozawa
Tsuchiya Kenji
Yusuke Furuuchi
Atsushi Watanabe
Shinpei Fukaya
Application Number:
JP2018189654A
Publication Date:
April 15, 2022
Filing Date:
October 05, 2018
Export Citation:
Assignee:
CITIZEN WATCH CO.,LTD.
International Classes:
F16B4/00; G04B17/06; F16B21/10; G04B13/02
Domestic Patent References:
| JP2015200652A | ||||
| JP201117701A | ||||
| JP441911B1 |
Foreign References:
| EP1705533A1 |
Attorney, Agent or Firm:
Cleo International Law & Patent Office
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