Abstract: The present invention directs an elastic hinge for quick-assembly leg including: a double-tooth of hinge, a screw, a spring core assembly and a leg; wherein the spring core assembly includes a elastic buckle, a single-tooth frame which is inserted in cavity of the elastic buckle, a core pin sleeved in a cavity of the elastic buckle which is formed after the single-tooth is assembled into the elastic buckle, and a spring sleeved on the core pin; the elastic buckle is provided with a fastening part and a leg is formed with locking part to engaged with the fastening part, and the removable part of the leg and the elastic hinge are assembled together.

Abstract: The present invention directs an elastic hinge for quick-assembly leg including: a double-tooth of hinge, a screw, a spring core assembly and a leg; wherein the spring core assembly includes a elastic buckle, a single-tooth frame which is inserted in cavity of the elastic buckle, a core pin sleeved in a cavity of the elastic buckle which is formed after the single-tooth is assembled into the elastic buckle, and a spring sleeved on the core pin; the elastic buckle is provided with a fastening part and a leg is formed with locking part to engaged with the fastening part, and the removable part of the leg and the elastic hinge are assembled together.

Abstract: A leaf spring hinge comprising a leaf spring member that is integrally formed with or fixedly connected to a lug or a temple is provided. The leaf spring member is provided at least with a leaf spring suspended and bent from a base. The leaf spring is bent in the form of an R-letter or U-letter. The leaf spring hinge has simple structure and reliable resilience, and is solid, durable and easy to manufacture.

Abstract: A leaf spring hinge comprising a leaf spring member that is integrally formed with or fixedly connected to a lug or a temple is provided. The leaf spring member is provided at least with a leaf spring suspended and bent from a base. The leaf spring is bent in the form of an R-letter or U-letter. The leaf spring hinge has simple structure and reliable resilience, and is solid, durable and easy to manufacture.

Abstract: A plug connection type eyeglasses assembly includes a pair of primary eyeglasses and a pair of secondary eyeglasses. A primary nosepiece of the primary eyeglasses is provided with a plughole, while the secondary eyeglasses is provided with a plug connector or a plug type turnover mechanism at a position corresponding to the primary nosepiece of the primary eyeglasses. The plug connector or the plug type turnover mechanism is inserted into and engaged with the plughole, thereby coupling the primary eyeglasses and the secondary eyeglasses.

Abstract: A spring hinge using clutch structure for eyeglasses of the invention includes a hinge bracket, a end-meshing element, a central-meshing element; a hinge cannula, a resilient element received in the hole of the central-meshing element; a fixing element; and a slide bush. The present invention uses the clutch structure to retain engagement by the pressure of a spring to achieve an easy and smooth operation during the motion of opening or closing the eyeglasses.

Abstract: A plug connection type eyeglasses assembly includes a pair of primary eyeglasses and a pair of secondary eyeglasses. A primary nosepiece of the primary eyeglasses is provided with a plughole, while the secondary eyeglasses is provided with a plug connector or a plug type turnover mechanism at a position corresponding to the primary nosepiece of the primary eyeglasses. The plug connector or the plug type turnover mechanism is inserted into and engaged with the plughole, thereby coupling the primary eyeglasses and the secondary eyeglasses.

Abstract: A spring hinge using clutch structure for eyeglasses of the invention includes a hinge bracket, a end-meshing element, a central-meshing element; a hinge cannula, a resilient element received in the hole of the central-meshing element; a fixing element; and a slide bush. The present invention uses the clutch structure to retain engagement by the pressure of a spring to achieve an easy and smooth operation during the motion of opening or closing the eyeglasses.