2. Description of the Background Art The glasses are generally classified into an eyesight correction glasses and an eyesight protection glasses. There are several methods of using the assistant glasses such as sunglasses, a magnifying glass, etc. used for the eyesight protection by engaging to the glasses used for the eyesight correction.

For example, an attaching part (magnet) is formed in a fixing part of the inner side of the hinge point to which a glasses leg is engaged, and the attaching parts are engaged with each other. When the assistant glasses are not

used, the assistant glasses are separated and stored. In this case, a certain variation may occur in the magnetic force, and the assistant glasses are easily escaped from the glasses.

As another part, a groove is formed in the inner wall of the fixing part of the hinge connected with the glasses leg, and a protrusion is formed in the support member formed in the outer side of the assistant glasses. As the time of use is passed, a certain variation occurs in the hinge point connected with the glasses leg, so that the assistant glasses may be disconnected. As another part, there is provided a certain part in which a ring provided in the upper side of the lens frame of the assistant glasses is inserted into the upper side of the lens frame of the glasses. In this case, when the ring of the assistant glasses is extended, when engaging to the lens frame of the glasses, there is a certain obstacle in the visual field of the user, so that there are many inconveniences.

In addition, since there are further various parts for engaging the assistant glasses to the glasses, the above parts are not actually used.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an engaging structure of assistant glasses for glasses that is capable of overcoming the problems encountered in the conventional art and achieving a stable engagement of the assistant glasses with respect to the glasses and preventing a variation and disengagement. When the assistant glasses are not used, the

assistant glasses are upwardly tilted for thereby achieving an easier use of the assistant glasses.

BRIEF DESCRIPTION OF THE DRAWINGS The preferred embodiments o the present invention will be described with reference to the accompanying drawings.

Figure 1 is a disassembled perspective view of the present invention; Figure 2 is a vertical cross sectional view of a major part of the present invention; and Figure 3 is a perspective view of a major part of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiment of the present invention will be described with reference to the accompanying drawings.

In the present invention, a pair of lens frames 1 and 1a are connected using a nose leg 2. Hinges 3 and 3a are provided at both outer sides of each of the lens frames 1 and 1a and are connected with glasses legs 4 and 4a. In the thusly constituted construction, an engaging hole 11 is formed in an upper surface having a pair of protrusions 10 in the inner surface of the nose leg 2. A pair of angle shaped support members are provided on the upper surface of the noise lens 7 of the assistant glasses 6. A groove 21 and an operation groove 22 are provided on the front end of the angle shaped support member 20 for

thereby accommodating a spring 23 and an elastic pin 24 therein. A support bar 25 is inserted and engaged using a pin 26 for thereby constructing an elastic hinge A in the above manner. The support bar 25 of the assistant glasses 6 having a spherical part 28 having a longitudinally extendable groove 27 is engaged with the engaging hole 11 of the glasses 5 at the end of the support bar 25 of the elastic hinge A.

The operation of the present invention will be described in detail.

The protrusion 10 is provided in the inner wall of the nose leg 2 of the glasses 5. The engaging hole 11 is formed on an upper surface of the protrusion 10. In the above construction, the glasses have a good outer visual appearance because the protrusion 10 and the engaging hole 11 are not exposed to the outside. Therefore, it is possible to achieve a beautiful outer visual appearance, and the glasses according to the present invention may be used as glasses for the purpose of the eyesight correction.

In addition, the groove 21 and the operation groove 22 are provided at the front end of the angle shaped support member 20. The spring 23 and the elastic pin 24 are accommodated in the groove 21 and the operation groove 22.

The support bar 25 is inserted into the operation groove 22 and is engaged using the pin 26 for thereby achieving an angle shaped support bar 20 of the elastic hinge A. The angle shaped support bar 20 of the elastic hinge A is engaged on the upper surface of the nose leg 7 of the assistant glasses 6.

Therefore, the angle shaped support member 20 having a pair of elastic hinges

A is provided on the upper surface of the nose leg 7 of the assistant glasses 6.

In addition, there is provided a spherical part 28 in the support bar 25 of the end of the elastic hinge A in the longitudinal direction together with the extendable groove 27.

In the present invention, when it is supposed to engage the assistant glasses 6 to the glasses 5 of the present invention, the support bar 25 of the angle shaped support member 20 provided in the nose leg 7 of the assistant glasses 6 is inserted into the engaging hole 11 formed in the inner wall of the nose leg 2 of the glasses 5. As shown in Figure 2, the outer diameter of the spherical part 28 of the assistant glasses 6 is decreased in the extendable groove 27 for thereby achieving a stable insertion and engagement.

In addition, the assistant glasses 6 is engaged to the support bar 25 and the angle shaped support member 20 using the pin 26, and the spring 23 inserted into the groove 21 of the angle shaped support member 20 is elastically supported by the elastic pin 24 positioned in the operation groove 22 for thereby achieving a desired hinge operation with respect to the pin 26 and an easier use of the assistant glasses.

When the assistant glasses 6 are not used, the assistant glasses 6 is upwardly tilted from the glasses 5, and the assistant glasses 6 maintains an upright state with respect to the pin 26 of the elastic hinge 26 beyond the upper point of the lens frames 1 and 1a of the glasses 5. When the assistant glasses 6 are moved down from the upright state, since the lenses of the glasses 5 and

the assistant glasses 6 are positioned at a certain position, it is possible to upwardly tilt and downwardly tilt the assistant glasses 6 from the glasses 5 for thereby achieving an easier use of glasses. In the preferred embodiment of the present invention, the eyesight correction lenses are inserted into the lens frames 1 and 1a of the glasses 5, and the eyesight protection lenses or magnifying lenses are inserted into the assistant glasses 6.

In the present invention, when the assistant glasses 6 are supposed to be separated from the glasses 5, the support bar 25 of the assistant glasses 6 inserted into the engaging hole 11 of the nose leg 2 of the glasses 5 is pulled out.

Namely, the support bar 25 is pulled upwardly, and the extendable groove 26 of the end of the support bar 25 positioned on the spherical part 27 is contracted, and the dimension of the spherical part 28 is decreased as compared to the inner diameter of the engaging hole 11 and is disengaged to the outside for thereby separately storing the same. Since there is not any interfering obstacle in the engaging hole 11 of the glasses 5, an easier use of the assistant glasses is achieved.

In the present invention, there is provided an angle shaped support member in which an engaging hole is provided in an inner side of the nose leg of the glasses, and the elastic hinge is provided in the nose leg of the assistant glasses. The support bar of the end of the angle shaped support member of the assistant glasses is inserted into the engaging hole of the inner side of the noise leg for thereby achieving a stable engagement. It is possible to prevent a certain

deformation and an escape of the assistant glasses. When the assistant glasses are not used, the assistant glasses are upwardly tilted with respect to the elastic hinge. When separating the assistant glasses, the engaging hole formed in the inner wall of the glasses leg is not exposed for thereby achieving a good outer visual appearance.

In the angle shaped support member, the engaging hole is provided in the nose leg of the glasses, and the elastic hinge is provided in the nose leg of the assistant glasses for thereby achieving an engaging member of the glasses and the assistant glasses, so that it is possible to stably engage the assistant glasses to the glasses. An escape of the assistant glasses is prevented. When the assistant glasses are not used, it is upwardly tilted for thereby achieving an easier use of the glasses. Even when the assistant glasses are separated, the engaging member is not exposed in the glasses. Therefore, an outer visual appearance is obtained. The present invention may be well actually adapted.

As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.