Lens fixing device for glasses without frame

Abstract

Disclosed is a lens fixing device for rimless glasses. The lens fixing device comprises a first fixing member made of soft synthetic resin, having a guide portion formed at its lower end, constituting a threaded hole, and having a tapered portion whose diameter decreases towards its upper end; and made of metal or hard synthetic resin. The second fixing member made of resin, manufactured separately from the first fixing member and connected to the first fixing member, has a flange portion formed on its outer surface and upper end, and is formed with a screw groove and the first fixing member can The mating groove and the main body part fit into it.

Description

technical field [0001] The present invention relates to a lens fixing device for rimless spectacles, which is used for fixing the lenses to the bridge and temples respectively, especially, the present invention relates to such a lens fixing device for rimless spectacles, which is aimed at the applicant The integrally molded lens fixing device for rimless spectacles described in Korean Utility Model Application No. 2001-4644 filed in the name of the The two fixing elements are connected to each other in such a way that they can provide strong fastening force, so that the screws passing through the lens and bridge or temple can be prevented from loosening unintentionally. Background technique [0002] Today, in order to meet various needs of customers, in addition to rimmed glasses, rimless glasses are widely used in the world for providing a beautiful appearance. Related patents of such glasses are disclosed in the following patents: U.S. Patent Nos. 2,071,045, 2,175,355, 2,...

AI Technical Summary

Problems solved by technology

[0007] However, the above-described existing lens fixing devices for rimless spectacles have a disadvantage in that the fastening body is only molded from a soft or hard synthetic resin.

Specifically, in the case where the fastening body is made of soft synthetic resin, although there is an advantage of improving the bushing, eliminating the gap between the lens and the screw, and preventing the lens from shaking and the screw from loosening unintentionally, there are still disadvantages, that is, in the As the part of the nut, the fastening body is exposed to the inner surface of the lens. The internal thread of the fastening body is easily crushed by the tightening force of the screw, so the fastening body cannot normally play the role of a nut

[0008] On the contrary, when the fastening body is made of hard synthetic resin, although the internal thread of the fastening body is not easy to be crushed, and the fastening body itself does not expand due to the tightening force of the screw, the possibility of forming a gap between the lens and the screw increased

Therefore, the lens is likely to shake and it is difficult to provide a strong fastening force

[0009] Also, in existing rimless eyeglass lens fixing devices, the fastening body is molded from only one soft and hard synthetic resin as described above, and synthetic resin has an inherent defect that it tends to be too soft in summer and hard in winter

Due to the fact that over time the synthetic resin alternates between being too soft and too hard, the screws can loosen in the fastening body and the possibility of the lens shaking relative to the bridge or the temple is further increased

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