DETACHABLE AND FIXED SUNGLASSES TECHNICAL FIELD The present invention relates to detachable and fixed sunglasses, and more particularly to an eyeglass set comprising primary eyeglasses and sunglass clip which can be detachably attached to the primary eyeglasses which have rim-to-temple joint portions with projecting sides having grooves or holes which receive clip arms on both ends of the sunglass clip and have resilient fixing members for securing the clip arms.

BACKGROUND ART The typical prior art is eyeglass frames to which sunglasses are attached by magnets (Korean Patent Application No. 10-1995-11855).

The eyeglass frames have magnets on its ends corresponding to both clips of sunglasses, and the sunglasses are attached to the eyeglass frames by magnetic force. In this design, sunglasses easily come off from the eyeglass frames when a wearer moves violently or excessively. At the present times when sunglasses are mostly used during leisure activities, therefore, detachable sunglasses that can be more firmly secured to eyeglass frames are required.

A further prior art is direct attachment of sunglass lenses to the lenses of the primary eyeglasses (Korean Patent Application No.

20-1996-2026). Each sunglass lens has a hole in its each side, and a bonding plate is inserted in each hole. The sunglass lenses are attached to the lenses of the primary eyeglasses by such bonding plates. This structure does not permit a wearer to see things clearly since bonding plates exists between the primary eyeglass lenses and sunglass lenses. It requires a wearer to touch sunglass lenses with the hand to attach them to the primary eyeglass lenses, thus making them being easily dirty.

DISCLOSURE OF IN INVENTION The present invention makes up for the problems that the conventional detachable sunglasses have.

The conventional detachable sunglasses easily come off from the primary eyeglasses when an external impact is applied or when a wearer moves violently or excessively. To solve such problems, the prevent invention comprises the primary eyeglasses with rim-to-temple joint portions 2 having receiving grooves a'or receiving holes la containing fixing members b', and a sunglass clip B having clip arms 11 which is inserted into the receiving grooves a' or receiving holes la for securing the sunglass clip B to the primary sunglasses A.

Therefore, the prevent invention can provide a wearer with convenience since sunglasses do not easily come off from the primary eyeglasses during leisure activities or violent exercises.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an structural view of detachable and fixed sunglasses according to an embodiment of the present invention; FIG. 2 is a cross-sectional view showing various fixing members according to an embodiment of the present invention ; FIG. 3 is a cross-sectional view showing the process that an clip arm of a sunglass clip is inserted into a groove according to an embodiment of the present invention ; FIG. 4 is a cross-sectional view of a receiving side hole according to an embodiment of the present invention; FIG. 5 is a cross-sectional view showing the state of an sunglass clip inserted into a receiving side hole ; and FIG. 6 is a perspective view of detachable and fixed sunglasses according to an embodiment of the present invention.

Explanation of Symbols Used in the Drawings A: Primary eyeglasses B: Sunglass clip 1: Lens 2: Rim-to-temple joint 11: Clip arm a' : Receiving groove la: Receiving side hole b' : Clip arm fixing member BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 illustrates an embodiment of the prevent invention comprising primary eyeglasses A and a detachable and fixed sunglass clip B.

Referring to FIGS 2 and 3, a rim-to-temple joint portion 2 supporting a lens of the primary eyeglasses A has a forward projecting side containing a receiving groove a'into which a clip arm 11 of a sunglass clip B is inserted. The receiving groove a'into which the clip arm 11 of the sunglass clip B is inserted perpendicular to the projecting side contains a clip arm fixing member b'. For the conventional invention, rim-to-temple joint portions have magnets on its outside, and a sunglass clip also has magnets on its clip arms.

Therefore, the sunglass clip is secured to the primary eyeglasses by the force of magnets. This structure has a problem that the sunglass clip easily comes off from the primary eyeglasses when an excessive impact is applied or when a wearer moves violently. To secure the sunglass clip arm 11 more firmly, the present invention has the rim-to-temple joint portion which has a forward projecting side with a receiving groove a'formed perpendicular to the projecting side. A clip arm fixing member b', made of silicone or rubber that has resilient force, is formed in the inside of the receiving groove a'. The clip arm fixing member b'serves to secure the clip arm 11 by means of its resilient force when the clip arm 11 is completely inserted into the receiving groove a'.

There are two methods of forming the clip arm fixing member b' in the receiving groove a'. One is to bond the clip arm fixing member b'to the inside of the groove a', using an strong adhesive, so that the clip arm fixing member b'is not detached easily. The other is to make a hole of a specific depth in the receiving groove a', and insert and bond the clip arm fixing member b'into and to the hole. The part of the clip arm fixing member b'which comes into direct contact with the clip arm 11 may be formed in various shapes and sizes according to resilient and securing forces of the clip arm fixing member b'. For example, if the fixing member b'is formed small or ovally, the securing force for the clip arm 11 is weak. Conversely, if the fixing member b'is formed large or angularly, the securing force for the clip arm 11 is strong.

The rim-to-temple joint portion 2 structured as described above does not allow the connection of the primary eyeglasses A and the sunglass clip B to be exposed to the outside, and prevents the sunglass clip B from coming off from the primary eyeglasses when an external impact is applied. The sunglass clip B is attached downward to the primary eyeglasses B, thus completely preventing the sunglass clip B from coming off from the primary eyeglasses because of centrifugal force.

Referring to FIGS. 1 and 3, the sunglass clip B comprises sunglass lenses, a support member and clip arm 11. As shown in FIG. 3, the clip arm 11 is inserted downward and perpendicularly into the receiving groove a'of the rim-to-temple joint portion 2, and secured by the clip arm fixing member b'formed in the groove a'. The size of the clip arm 11 is determined by considering the size and depth of the receiving groove a'and the size and shape of the fixing member b'. The clip arm 11 may be usually made of general materials for eyeglass frames but in the prevent invention is made of rubber or synthetic resin to maximize the frictional force between the clip arm 11 and the fixing member b'and to raise the securing force.

Referring to FIGS. 4 and 5 illustrate a receiving side hole la formed in the rim-to-temple joint portion 2 and the state of the clip arm 11 inserted into the receiving side hole la. The receiving side hole la has a fixing member b'formed perpendicular to the direction in which the clip arm is inserted into the receiving side hole la. The clip arms 11 are inserted into the receiving side holes la in both forward projecting sides of the rim-to-temple joint portions 2, using the flexibility of the sunglass clip B. This method of inserting the sunglass clip B gives an excellent securing force for the sunglass clip B.

As described above, the present invention comprising the primary eyeglasses A and the sunglass clip B is characterized by easy attachment and detachment and strong securing force.