# US 9,753,433 B2 · Mechanical component, movement, and timepiece > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,753,433 B2 - Document ID: US9753433B2 - Status: Granted - Kind: B2 - Application number: 14/841,959 - Filed: 2015-09-01 - Published: 2016-03-17 - Granted: 2017-09-05 - Earliest claimed: 2014-09-12 - Assignees: Seiko Instruments Inc. - Applicants: Seiko Instruments Inc. - Inventors: Sachiko Tanabe; Takashi Niwa; Masahiro Nakajima - Web page: https://patentgrep.com/patent/US9753433B2 ## CPC - G04B 13/02: Wheels; Pinions; Spindles; Pivots (bearings G04B31/00 {; chain wheels, spindles for chain wheels, also chains and driving weights G04B1/08}) - G04B 13/021: {elastic fitting with a spindle, axis or shaft} - G04B 15/14: 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)} - G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) 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. ### Claim 4 (depends on 2) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 2) 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. ### Claim 7 (depends on 3) 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. ### Claim 8 (depends on 4) 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. ### Claim 9 (depends on 1) 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. ### Claim 10 (depends on 2) 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. ### Claim 11 (depends on 3) 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. ### Claim 12 (depends on 4) 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. ### Claim 13 (depends on 5) 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. ### Claim 14 (depends on 6) 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. ### Claim 15 (depends on 1) 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. ### Claim 16 (depends on 1) The mechanical component according to claim 1, wherein the component main body is formed of a brittle material. ### Claim 17 (depends on 1) A movement equipped with a mechanical component as claimed in claim 1. ### Claim 18 (depends on 17) A timepiece equipped with a movement as claimed in claim 17.