Patent Publication Number: US-2007121059-A1

Title: Eyeglasses with lenses changeable

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      This invention relates to a pair of eyeglasses with lenses changeable, particularly to one provided with an elongate frame, and a lens set easily removably combined with the frame for changing the lens set in case of need. A nose pad supporter is formed integral with an inner side of an intermediate portion of the frame, and an elastic engage block is formed in an upper side of the nose pad supporter, with a protrusion provided in the front of the engage block, and an inclined surface formed respectively at two sides of an inner end of the protrusion. The lens set is provided with two lenses, a protrusion hole formed in an upper side of a center portion and between the two lenses, and a notch formed on the protrusion hole and communicating with the protrusion hole. In combining the lens set with the frame, the notch of the lens set is moved along on the inclined surfaces of the nose pad supporter and push on the engage block, letting the protrusion fit and move in the notch, and then the nose pad supporter is pushed forward to let the engage block insert in the engage hole of the lens set to stabilize the lens set in place combined with the frame. On the contrary, in disassembling, the protrusion of the nose pad supporter is pressed to let the engage block released from the engage hole of the lens set, and then the lens set is taken off the frame.  
      2. Description of the Prior Art  
      Conventional eyeglasses generally have a frame, and the frame has its two ends respectively provided with an opening, and a fixing base formed respectively at two sides of the opening, with the fixing bases locked with screws so as to stabilize two lenses in the frame rims. If lenses are to be affixed or replaced in the frame, a screw driver is used to loosen the screws so that the lenses may be fitted in or taken off, needing some time and work, and the work has to be done skillful technician. Otherwise common people cannot do it for themselves. Provided the screws should fall off, the lenses may also fall off the frame rims, possible to be broken. Another kind of eyeglasses is made of plastic, so the lenses may not be combined with the frame unless the frame and the lenses are warmed, not easily replacing the lenses with other ones, even if they are wanted to be replaced with other colored ones.  
     SUMMARY OF THE INVENTION  
      This invention has been devised to offer eyeglasses with lenses changeable so as to use proper lenses if needed.  
      The feature of the invention is an elongate frame provided with a lengthwise fitting groove for an upper lengthwise edge of a lens set to fit therein and a protrusion provided on an engage block formed integral with a nose pas supporter, which is provided integral with the frame, and a fitting hole with a notch formed in the lens set. Then the lens set is assembled with the frame or disassembled from the frame easily by engaging or disengaging the protrusion of the engage block with or from the fitting hole of the lens set via the notch. 
    
    
     BRIEF DESCRIPTION OF DRAWINGS  
      This invention will be better understood by referring to the accompanying drawings, wherein:  
       FIG. 1  is an exploded perspective view of a pair of eyeglasses with lenses changeable in the present invention;  
       FIG. 2  is a partial perspective view of a nose pad supporter and a lens set in the eyeglasses in the present invention;  
       FIG. 3  is a cross-sectional view of the eyeglasses with lenses changeable in the present invention;  
       FIG. 4  is a perspective view of the eyeglasses with lenses changeable in the present invention;  
       FIG. 5  is another cross-sectional view of the eyeglasses in the present invention;  
       FIG. 6  is a front view of  FIG. 5 ;  
       FIG. 7  is a first relative view of assembling process of the lens set with the frame in the present invention;  
       FIG. 8  is a second relative view of assembling process of the lens set with the frame in the present invention;  
       FIG. 9  is a third relative view of assembling process of the lens set with the frame in the present invention; and,  FIG. 10  is a front view of  FIG. 9 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      A preferred embodiment of a pair of eyeglasses with lenses changeable in the present invention, as shown in  FIGS. 1 and 2 , includes an elongate frame  1 , a lens set  2  and two nose pads  3 .  
      The elongate frame  1  is provided with a fitting groove  10  formed lengthwise in a lower side, an insert groove  100  formed respectively at two ends of the fitting groove  10 , a center hole  11  formed in an outer side of a center section of a wall defining the fitting groove  10 , a nose pad supporter  12  formed as a fork-shape and integral with the frame  1 , an elastic engage block  120  added on an upper side of the nose pad supporter  12  and swingable a little back and forth, a protrusion  121  formed to extend forward sidewise from an upper end of the engage block  120  and to insert in the center hole  11  of the frame  10 . Further, an inclined surface  122  is provided respectively at two sides of the inner end of the protrusion  121  and the nose pad supporter  12  has two protrusions  123  extending sidewise. Two temples  13  are combined with two ends of the frame  10 .  
      The lens set  2  has an upper lengthwise side edge  20  to fit in the fitting groove of the frame  10  for combination, an engage hole  21  in a center section of the upper portion of the lens set  20  to correspond to the engage block  120  of the nose pad supporter  12 , and a notch  210  formed on the engage hole  21  and communicating with the engage hole  21 , and a fitting pointed member  22  formed respectively at two ends for fitting with the insert grooves  100  of the frame  10 .  
      The two nose pads  3  are affixed with the nose pad supporter  12 , having two insert holes  30  for the protrusions  123  to insert therein for combining the nose pads  3  with the nose pad supporter  12 .  
      In assembling, referring to  FIGS. 1-4 , firstly, the lens set  2  is made to let the two fitting pointed members  22  fitted in the insert grooves  100  of the frame  10 , and the upper side edge  20  of the lens set  2  is aligned to the fitting groove  10  of the frame  10 , so that the lens set  2  may be pushed up, letting the notch  210  of the lens set  2  slide along the inclined surfaces  122  of the nose pad supporter  12  and pushing the engage block  120  back so that the upper side edge  20  of the lens set  2  fitting in the fitting groove  10 , with the protrusion  121  entering the notch  210  and the engage block  120  fitting in the engage hole  21  by moving forward the nose pad supporter  12 . Then the lens set  2  is completed combining with the frame  1 .  
      In disassembling the lens set  2  from the frame  1 , as shown in  FIGS. 5-10 , only the protrusion  121  inserted in the hole  11  of the frame  1  is needed to be pressed inward until the engage block  120  retreats out of the engage hole  21 , permitting the lens set  2  separate from the nose pad supporter  12  of the frame  1 , finishing disassembling.  
      While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.