Eyeglasses having hidden pivot structure

Eyeglasses having a hidden pivot structure, comprising:

• a frame having a first inner surface and a first outer surface, two sides of the frame having first end surfaces respectively, the first end surfaces being adjacent to the first inner surface and the first outer surface respectively, the frame having upper and lower first pivot portions at each of two sides of the first inner surface thereof, each of the upper and lower first pivot portions including a pivot blocks having a pivot hole, each of the first end surfaces being formed with two engaging recesses extending into the first inner surface;
• and
• two temples pivotally connected to the two sides of the frame, the two temples each having a second inner surface, a second outer surface, and a second end surface adjacent to the second inner and outer surfaces, each of the temples having upper and lower second pivot portions protruding from the second inner surface, each of the upper and lower second pivot portions having a pivot members extending to support a pivot shafts spaced away from the second end surface and pivotally connected to one of the pivot holes, each of the temples being formed with two engaging blocks, each of the engaging blocks disposed in contact with the second end surface and adjacent to and connected to one of the pivot members;
• wherein when the two temples are unfolded relative to the frame, the engaging blocks are engaged in the engaging recesses respectively.