Regulator pin structure and regulator with the same, structure of balance with hairspring, and mechanical timepiece

Abstract

There is provided a regulator pin structure that is not only easily assembled but also capable of holding a hairspring in a gap without a risk of the hairspring being released, a regulator with the regulator pin structure, a structure of balance with hairspring, and a mechanical timepiece. A regulator pin structure of a regulator that is a component of a structure of balance with hairspring of a mechanical timepiece includes a pin-like body, a base that is situated on one end of the body and mounted to a body of regulator such that the position of the base is adjustable around the pivotal center axis of the body, and a pair of two-pronged legs that extend from the other end of the body. The regulator pin structure is configured such that part of the outer end of a hairspring that is situated beyond a reformed portion of the hairspring along the outer circumference direction is freely fitted in a gap between the legs. Canopy-like projections are formed on at least one side edge of the front portion of at least one of the pair of legs in such a manner that the canopy-like projections laterally project along sides of the legs that face toward the gap.

Description

technical field [0001] The invention relates to a speed needle structure, a regulator with the speed needle structure, a balance spring structure and a mechanical timepiece. Background technique [0002] "A fast and slow needle structure, comprising: a needle-shaped body, a base at one end of the fuselage and mounted on the main body of the regulator, so that the position of the base can be adjusted around the pivotal center axis of the needle-shaped body; and a pair of slave needles The double-forked legs protruding from the other end of the body, the fast and slow needle structure is set in such a way that the outer end part of the hairspring is movably installed between the two legs along the outer circumferential direction of the rectified part (reformed portion) away from the hairspring "In the gap (slit) between" regulators with the above-mentioned speed needle structure are known, and have been conventionally used in various mechanical timepieces. [0003] However, t...

AI Technical Summary

Problems solved by technology

[0005] However, as a result of this proposal, the gauge pin structure (although described (called) in US Patent No. 4,083,179 as (referred to as) the "hairspring outer clip", referred to herein as the gauge pin structure) is arranged in such a way that the tips of the two legs point toward Inwardly bent to close each other, when the gap between the tips is narrowed in order to prevent the outer end of the hairspring from coming off, in order to assemble, it is required to open the gap between the tips of the legs and force the hairspring into it, resulting in cumbersome assembly process, and also May cause unintentional deformation of hairspring

[0006] Also, in this proposed fast-slow needle structure, since the tips of the legs are tapped to bend them inwardly, not only can the legs of the fast-slow needle structure be deformed to a certain degree when they are subjected to bending treatment, so that the deformation can Affects the behavior of the hairspring in a measurable way, and the variation in the structure of a single needle can be large, leading to potentially troublesome adjustment work

In addition, it is difficult to automate this bending process without using a specific processing machine, and it is particularly difficult to manufacture fast and slow needle structures using a continuous processing system of a general purpose CNC machine tool

Images