Mechanical component, movement, and timepiece

Patent metadata

Field	Value
Publication number	US-9753433-B2
Application number	US-201514841959-A
Country	US
Kind code	B2
Filing date	Sep 1, 2015
Priority date	Sep 12, 2014
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A mechanical component includes a component main body having a through-hole through which a shaft member is passed, and a forcing-in portion made of metal material formed on the inner surface of the through-hole and fixed to the shaft member through the forcing-in of the shaft member. The component main body has a retaining recess and the forcing-in portion fills the inner space of the retaining recess so that the retaining recess constitutes an anchor structure regulating displacement of the forcing-in portion with respect to the component main body.

First claim

What is claimed is:

1. A mechanical component, comprising:
a component main body having a through-hole through which a shaft member is passed; and
a forcing-in portion formed on the inner surface of the through-hole and fixed to the shaft member through the forcing-in of the shaft member,
wherein a retaining recess is formed on the inner surface of the through-hole, a part of the forcing-in portion fills the inner space of the retaining recess and another part of the forcing-in portion protrudes inwardly from the inner surface of the through-hole, and the retaining recess constitutes an anchor structure regulating displacement of the forcing-in portion with respect to the component main body by retaining at least a part of the forcing-in portion; and
wherein the forcing-in portion is formed of a metal material.

2. The mechanical component according to claim 1 , wherein the retaining recess regulates inward displacement of the forcing-in portion by making the width dimension thereof at a first position smaller than the width dimension thereof at a second position on the outer peripheral side of the first position.

3. The mechanical component according to claim 1 , wherein the retaining recess has a receiving step portion the peripheral dimension of which increases discontinuously toward the exterior; and
the forcing-in portion has an abutment step portion abutting the receiving step portion.

4. The mechanical component according to claim 2 , wherein the retaining recess has a receiving step portion the peripheral dimension of which increases discontinuously toward the exterior; and
the forcing-in portion to has abutment step portion abutting the receiving step portion.

5. The mechanical component according to claim 1 , wherein the forcing-in portion is divided at least at one position in the peripheral direction of the component main body.

6. The mechanical component according to claim 2 , wherein the forcing-in portion is divided at least at one position in the peripheral direction of the component main body.

7. The mechanical component according to claim 3 , wherein the forcing-in portion is divided at least at one position in the peripheral direction of the component main body.

8. The mechanical component according to claim 4 , wherein the forcing-in portion is divided at least at one position in the peripheral direction of the component main body.

9. The mechanical component according to claim 1 , wherein the component main body has a receiving recess receiving a swollen deformed portion of the forcing-in portion generated through the forcing-in of the shaft member.

10. The mechanical component according to claim 2 , wherein the component main body has a receiving recess receiving a swollen deformed portion of the forcing-in portion generated through the forcing-in of the shaft member.

11. The mechanical component according to claim 3 , wherein the component main body has a receiving recess receiving a swollen deformed portion of the forcing-in portion generated through the forcing-in of the shaft member.

12. The mechanical component according to claim 4 , wherein the component main body has a receiving recess receiving a swollen deformed portion of the forcing-in portion generated through the forcing-in of the shaft member.

13. The mechanical component according to claim 5 , wherein the component main body has a receiving recess receiving a swollen deformed portion of the forcing-in portion generated through the forcing-in of the shaft member.

14. The mechanical component according to claim 6 , wherein the component main body has a receiving recess receiving a swollen deformed portion of the forcing-in portion generated through the forcing-in of the shaft member.

15. The mechanical component according to claim 1 , wherein the forcing-in portion has a displacement regulating structure regulating displacement in the thickness direction with respect to the component main body.

16. The mechanical component according to claim 1 , wherein the component main body is formed of a brittle material.

17. A movement equipped with a mechanical component as claimed in claim 1 .

18. A timepiece equipped with a movement as claimed in claim 17 .

Assignees

• Seiko Instr Inc

Inventors

• Tanabe Sachiko
• Niwa Takashi
• Nakajima Masahiro

Classifications

• G04B13/02 Primary

  Wheels; Pinions; Spindles; Pivots (bearings G04B31/00 {; chain wheels, spindles for chain wheels, also chains and driving weights G04B1/08}) · CPC title

• G04B13/021 Primary

  elastic fitting with a spindle, axis or shaft · CPC title

• G04B15/14

  Component parts or constructional details, e.g. construction of the lever or the escape wheel {(assembly and manufacture of the spring G04B1/145; assembly and manufacture of components, e.g. pinions, spindles G04B13/02; lubrication of clockwork bearings G04B31/008; oils for clockwork bearings in general G04B31/08)} · CPC title

• G04B13/026

  Physics · mapped topic

• F16B2/24

  of metal · CPC title