ASSEMBLY ELEMENT INCLUDING SUPERPOSED STRIP SHAPED ELASTIC STRUCTURES AND TIMEPIECE FITTED WITH THE SAME

摘要

An assembly element including superposed strip shaped elastic structures and a timepiece fitted with the same are provided to obtain better distribution of stress related to elastic deformation in material forming the assembly element and control the gripping force obtained on an arbor well. An assembly element(18) includes a hole(32) through which an arbor(26) is inserted and an inner wall(33) of the hole including elastic structures(34). Each of the elastic structures has at least one support surface(36) for gripping the arbor in a radial direction to fix the assembly element to the arbor. Each of the elastic structures has a first linear elastic strip(L1) extended along a tangent line with respect to the arbor. Each of the elastic structures is formed by a radial stack of some parallel elastic strips(Ln). Each of the elastic strips is radially separated from the adjacent elastic strip by a linear separator hole(In) in two parts. The two parts of the separator hole connect the two adjacent elastic strips and are divided by a bridge of material radially aligned with the support surface. The last elastic strip of the stack arranged on an opposite side to the first linear elastic strip is radially separated from the rest of a plate by a hole in a single part, which is a clearance hole for the connected elastic structure.