Eyeglass with lens fastening arrangement

A pair of eyeglasses with lens fastening arrangement includes a frame having two sets of one or more through holes formed on an outer top and/or bottom edge of each of a pair of openings. The through holes communicate with grooves of the openings. A pair of lenses each includes one or more projections formed on an outer top and/or a bottom edge of each lens. The projection is adapted to lockingly engage with the through hole with peripheral edges of the lenses being inserted into the grooves of the openings of the frame when the lenses are firmly fitted in the openings of the frame. Thereby, loosening of the lenses by bending temples of the eyeglasses is substantially impossible.

BACKGROUND OF THE INVENTION

1. Field of Invention

The present invention relates to eyeglasses and, more particularly, to a pair of eyeglasses (e.g., sunglasses or safety glasses) having a secure lens fastening arrangement so as to keep lenses being firmly fastened in a frame.

2. Related Art

A pair of conventional eyeglasses40such as sunglasses or safety glasses is shown inFIG. 1. The eyeglasses40comprise a frame10including left and right openings with lenses30fitted therein. A peripheral edge101of each opening has a peripheral groove102there along for receiving the lens30. Two temples20are respectively pivotably connected to either end of the frame10.

Referring toFIG. 2, it is typical for a quality control worker to test the produced eyeglasses40by outwardly bending the temples20. Unfortunately, the lenses30are prone to loosening and disengaging from the frame10due to the fastening arrangement, i.e., the eyeglasses40will not pass quality control. Thus, continuing improvements in the exploitation of eyeglasses having a lens fastening arrangement are constantly being sought.

SUMMARY OF THE INVENTION

It is, therefore, an object of the present invention to provide a pair of eyeglasses, such as sunglasses or safety glasses, having a lenses fastening arrangement such that loosening of lenses by bending temples is substantially impossible.

To achieve the above and other objects, the present invention provides a pair of eyeglasses includes a frame having two sets of one or more through holes formed on an outer top and/or bottom edge of each of a pair of openings. The through holes communicate with grooves of the openings. A pair of lenses each includes one or more projections formed on an outer top and/or a bottom edge of each lens. The projection is adapted to lockingly engage with the through hole with peripheral edges of the lenses being inserted into the grooves of the openings of the frame when the lenses are firmly fitted in the openings of the frame. Thereby, loosening of the lenses by bending temples of the eyeglasses is substantially impossible.

In one aspect of the present invention, the through hole of the frame extends at an incline so that the projection is invisible when held in the through hole.

DETAILED DESCRIPTION OF THE INVENTION

Referring toFIGS. 3 and 4, a pair of eyeglasses4in accordance with a first preferred embodiment of the invention is shown. The eyeglasses4comprise a frame1, a pair of lenses2and a pair of temples3each pivotably connected to either end of the frame1. The frame1includes left and right openings for receiving the lenses2and two sets of a plurality of adjacent through holes11, each set formed on an outer top edge of each opening. Each of the openings includes a peripheral edge12having a peripheral groove13there along. The through holes11communicate with the grooves13and extend perpendicularly or at an incline. Each of the lenses2has a plurality of adjacent projections21formed on the position related to the through holes11. The projections21are adapted to matingly, lockingly engage with the through holes11.

In assembly, referring toFIG. 5, peripheral edges of the lenses2are inserted into the grooves13of the peripheral edges12and the projections21are inserted into the through holes11so as to fit the lenses2in the openings of the frame1. Therefore, the lenses2will be securely fastened in the frame1.

Referring toFIG. 6, a lens2and a frame1according to a second preferred embodiment of eyeglasses such as sunglasses or safety glasses of the invention are shown. The characteristics of the second preferred embodiment are that each of the lenses2further comprises a plurality of adjacent projections21formed on an outer bottom edge, and that the frame1further comprises two sets of a plurality of adjacent through holes11, each set formed on an outer bottom edge related to the projections21. The projections21are adapted to matingly, lockingly engage with the through holes11when the lenses2are fitted in the openings of the frame1.

Referring toFIG. 7, when a quality control test is performed, the eyeglasses4will be tested by repeatedly outward bending the temples3. The frame1will therefore be pulled downwardly. Advantageously, the lenses2are still securely fitted in the frame1, because the plurality of projections21of the lenses2are held in the corresponding through holes11of the frame1. The eyeglasses4will therefore pass a quality control test and can efficiently protect a wearer from being hurt by loosening lenses.

In the case of the through holes11of the inclined type, the projection21is invisible from top when being held in the through hole11, and air is able to pass through the through holes11so as to provide air circulation.