Title:
SPECTACLE FRAME AND TEMPLE MEMBER FOR SPECTACLE FRAME
Document Type and Number:
WIPO Patent Application WO/2014/122687
Kind Code:
A1
Abstract:
[Problem] To provide a spectacle frame and a temple member for a spectacle frame, in which a decline in the strength of an elastic member is not prone to occur even when spectacles are used for a long time, and in which differences in user head size do not cause significant irregularity of fit during wear. [Solution] A left-right pair of temple members provided with ear hanging parts for making contact with temporal parts of the head of a wearer at rear-end parts thereof, front-end parts of the temple members being connected to both ends of a front frame, wherein a temple body is configured from a leaf spring part formed on a front frame side, and a high-rigidity part having a higher flexural rigidity than the leaf spring part and formed so as to include the hear hanging part to the rear of the leaf spring part, while the leaf spring part is formed so that the width thereof in the up-down direction is constant, or so as to have a tapered shape in which the width thereof in the up-down direction decreases by a predetermined ratio from the front side to the rear side thereof, and is formed so that the thickness of the leaf spring part satisfies a predetermined numeric expression with regard to the relationship of the width of the leaf spring part in the up-down direction, a position in the length direction, and the position along the high-rigidity part (12) at which contact is made with the temporal region of the head.
Inventors:
MASUNAGA SATORU (JP)
Application Number:
PCT/JP2013/000641
Publication Date:
August 14, 2014
Filing Date:
February 06, 2013
Export Citation:
Assignee:
MASUNAGA OPTICAL MFG CO LTD (JP)
International Classes:
G02C5/16
Domestic Patent References:
| WO2011007421A1 | 2011-01-20 | |||
| WO2010041465A1 | 2010-04-15 |
Foreign References:
| JP2012226144A | 2012-11-15 | |||
| JP2002277835A | 2002-09-25 | |||
| JPS5459424A | 1979-05-14 |
Attorney, Agent or Firm:
TOGAWA, KOJI (JP)
Koji Togawa (JP)
Koji Togawa (JP)
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