Title:
TIMEPIECE COMPONENT ASSEMBLY, BALANCE, AND TIMEPIECE
Document Type and Number:
Japanese Patent JP2013167531
Kind Code:
A
Abstract:
To provide a timepiece component assembly capable of welding while a collet and a hairspring are precisely positioned and capable of preventing the occurrence of lateral deviation of the hairspring, a balance provided with this timepiece component assembly, and a timepiece.
A timepiece component assembly 15 is formed by welding a collet 50 externally fitted and fixed to a balance staff coaxially and a hairspring 40 formed along an Archimedes curve X. The collet 50 comprises a welding surface 57 where an inner peripheral side end part 43 of the hairspring 40 is welded. The welding surface 57 is formed in a shape corresponding to the Archimedes curve X of the hairspring 40 when viewed from an axis direction of the collet 50.
Inventors:
IBATA TAKAYOSHI
HIRANO KEI
KIKUCHI KIYOSHI
TADA KENTARO
HIRANO KEI
KIKUCHI KIYOSHI
TADA KENTARO
Application Number:
JP2012030860A
Publication Date:
August 29, 2013
Filing Date:
February 15, 2012
Export Citation:
Assignee:
SEIKO INSTR INC
International Classes:
G04B17/32
Attorney, Agent or Firm:
Kentaro Kuhara