Patent ID: 8894199

Claim:
A pair of right and left temple members of a spectacles frame, frontal end portions of which members are connected to both ends of a front frame and at a rear end portion of which members each an ear suspension section in abutment with a lateral side of a wearer's head is provided, wherein a temple main body comprises a plate spring section formed to a side of the front frame; and a highly rigid section formed to a rear side of the plate spring section with the ear suspension section inclusive and having bending rigidity higher than that of the plate spring section while the plate spring section is formed in one of such manners that its vertical width is rendered constant and tapered with narrowed by a predetermined ratio from its frontal side to its rear side as well as such that a thickness of the plate spring section satisfies the following equation in relation with vertical widths of the plate spring section, positions in a longitudinal direction thereof and an abutment position with the lateral side of the head at the highly rigid section: z = Z 0 ⁢ Y 0 ⁡ ( l + X 0 - x ) y ⁢ ⁢ ℓ x: Length of the plate spring section from its frontal end to its arbitrary point P X 0 : Length of the plate spring section from its frontal end to its rear end y: Vertical width of the plate spring section at its arbitrary point P Y 0 : Vertical width of the plate spring section at its rear end z: Thickness of the plate spring section at its arbitrary point P Z 0 : Thickness of the rear end of the plate spring section l: Length of the highly rigid section from its frontal end to the position A in abutment with the lateral side of the head (l>0) *y is a constant or a function of X.