Patent Publication Number: US-2017354538-A1

Title: Eyewear component with replaceable lens

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an eyewear component with a replaceable lens, particularly to a sunglasses component with a replaceable lens. 
     2. Description of the Prior Arts 
     Sport sunglasses are one type of the sunglasses for protecting eyes from excess ultraviolet (UV) light during outdoor activities. In different sports, the requirements of the sunglasses are not the same. For example, for activities in the snow or at a beach, the color depth and the UV filtration strength of the lens are both higher because the sunlight and the UV light are easy to reflect in the snow and at the beach. However, the eyes do not receive enough light when wearing the sport sunglasses for other occasions. Therefore, the sport sunglasses can only be used for a particular purpose. 
     As for the person who needs to participate in long time sports activities, such as a cyclist, the intensities of the sunlight are different at different times and through different terrains, such that the sunglasses of a mono-color depth cannot offer the most suitable protection throughout the activity. However, carrying around multiple sunglasses seems burdensome and unnecessary. 
     Therefore, the disadvantages in prior arts should be resolved. 
     SUMMARY OF THE INVENTION 
     According to the above description, the objective of the present invention is to provide an eyewear component with a replaceable lens, which is easy to assemble and detach for the user to easily change the lens. 
     To achieve the above objective of the present invention, the invention provides an eyewear component with a replaceable lens, comprising a lens, a first buckle and a second buckle. The lens has a first end and a second end, the first end has an opening formed in the first end, and the second end has an elongated hole and a notch formed in the second end; the first buckle has a fixed element detachably received in the opening of the first end, and the fixed element has a head portion and a neck portion; the second buckle has an upper buckled portion and a lower buckled portion, and the upper buckled portion and the lower buckled portion are detachably received in the elongated hole and the notch of the second end respectively. 
     Therefore, the advantages of the present invention are that the lens, the first buckle, and the second buckle are easy to be assembled by the combination of the fixed element of the first buckle and the first end of the lens, and by the combination of the upper buckled portion and the lower buckled portion of the second buckle with the second end of the lens. Therefore, the lens is not only easy to be buckled to the first buckle and the second buckle, but also easy to be detached for changing the lens by the user. 
     Preferably, a width of the neck portion between an upper side and a lower side of the neck portion is wider than a width of the neck portion between a right side and a left side of the neck portion. 
     More preferably, a tapered portion and a receiving portion are formed at the opening of the lens, a width of the receiving portion between an upper side and a lower side of the receiving portion is equal to the width of the neck portion between the upper side and the lower side of the neck portion, and a smallest width of the tapered portion is equal to the width of the neck portion between the right side and the left side of the neck portion. 
     Preferably, the elongated hole of the second end of the lens and the notch are misaligned. 
     Preferably, a width of a lower end of the elongated hole near the notch is wider than a width of an upper end of the elongated hole opposite the lower end. 
     Preferably, the upper buckled portion of the second buckle has an annular flange formed at an end of the upper buckled portion. 
     Preferably, the lower buckled portion of the second buckle has a protrusion formed at an end and at a side of the lower buckled portion. 
     Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of an eyewear component with a replaceable lens of the present invention; 
         FIG. 2  is another perspective view of the eyewear component with a replaceable lens of the present invention; 
         FIG. 3  is an exploded and perspective view of the eyewear component with a replaceable lens of the present invention; 
         FIG. 4A  and  FIG. 4B  are cross-sectional views of the fixed element of the first buckle of the eyewear component with a replaceable lens of the present invention; 
         FIG. 5  is another exploded and perspective view of the eyewear component with a replaceable lens of the present invention; 
         FIG. 6  is a front view of the upper buckled portion and the lower buckled portion of the second buckle of the eyewear component with a replaceable lens of the present invention; 
         FIG. 7  is an enlarged and cross-sectional view taken along line A-A of  FIG. 6  of the upper buckled portion and the lower buckled portion of the second buckle of the eyewear component with a replaceable lens of the present invention; 
         FIG. 8  is an enlarged and cross-sectional view taken along line B-B of  FIG. 6  of the lower buckled portion of the second buckle of the eyewear component with a replaceable lens of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     As shown in  FIG. 1  and  FIG. 2 , the eyewear component with a replaceable lens of the present invention comprises a lens  10 , a first buckle  20 , and a second buckle  30 . 
     Two ends of the lens  10  are respectively defined as a first end  101  and a second end  102 , the first end  101  is detachably located at the first buckle  20 , and the second end  102  is detachably located at the second buckle  30 . The first buckle  20  and the second buckle  30  can respectively be connected to the temples (not shown in the figures) to form a complete eyewear. As shown in  FIG. 3 , the first end  101  has an opening  11  formed in the first end  101  and extending along an axial direction of lens  10 , and the opening  11  forms a receiving portion  111  and a tapered portion  112 . As shown in  FIG. 4A , and  FIG. 4B , the receiving portion  111  is located at the widest portion of the opening  11  and has a first width d 1  between an upper side and a lower side of the receiving portion  111 , and the tapered portion  112  has a second width d 2 , which is the smallest width of the tapered portion  112 . The first width d 1  is wider than the second width d 2 . As shown in  FIG. 5 , the second end  102  of the lens  10  has an elongated hole  12  and a notch  13  formed in the second end  102 . The elongated hole  12  has an upper end and a lower end, and extends from the upper end toward the lower end. A width of the lower end of the elongated hole  12  is wider than a width of the upper end of the elongated hole  12 . Specifically, the lower end of the elongated hole  12  laterally forms a widened portion  120  such that the width of the lower end of the elongated hole  12  is wider than the width of the upper end of the elongated hole  12 . The notch  13  is located at a lower end of the lens  10 ; in a preferred embodiment, the elongated hole  12  and the notch  13  are misaligned. Specifically, a center of the notch  13  is slightly away from the extending direction of the elongated hole  12 ; in another preferred embodiment, the notch  13  is on the extending direction of the elongated hole  12 . 
     As shown in  FIG. 4A ,  FIG. 4B , and  FIG. 5 , the first buckle  20  has a fixed element  21  detachably received in the receiving portion  111  of the opening  11  of the first end  101 , and the fixed element  21  has a head portion  211  and a neck portion  212 . In the preferred embodiment, the neck portion  212  has a third width d 3  between an upper side and a lower side of the neck portion  212  (as shown in  FIG. 4B ) and a fourth width d 4  between a right side and a left side of the neck portion  212  (as shown in  FIG. 4A ), and the third width d 3  is wider than the fourth width d 4 . The third width d 3  of the neck portion  212  and the first width d 1  of the receiving portion  111  of the opening  11  are equal, and the fourth width d 4  of the neck portion  212  and the second width d 2  of the tapered portion  112  of the opening  11  are equal. The distance between the head portion  211  and the first buckle  20  is equal to the thickness of the lens  10 , such that the lens  10  can be fastened by the head portion  211  and the first buckle  20 . 
     As shown in  FIG. 5  and  FIG. 6 , the second buckle  30  has an upper buckled portion  31  and a lower buckled portion  32 , the upper buckled portion  31  and the lower buckled portion  32  are detachably received in the elongated hole  12  and the notch  13  of the second end  102  respectively. The upper buckled portion  31  and the lower buckled portion  32  are respectively buckled on the elongated hole  12  and the notch  13  of the second end  102 . Due to the misalignment of the elongated hole  12  and the notch  13 , the lens  10  and the second buckle  30  are difficult to separate by a force applied from one single direction. The larger the misalignment, the more difficult the separation of the lens  10  and the second buckle  30 . 
     As shown in  FIG. 7  and  FIG. 8 , the upper buckled portion  31  and the lower buckled portion  32  protruding away from the second buckle  30  are respectively inserted and received in the elongated hole  12  and the notch  13 . As shown in  FIG. 6  and  FIG. 7 , the upper buckled portion  31  has an annular flange  310  formed at an end of the upper buckled portion  31 . In another preferred embodiment, the annular flange  310  is located at the end and at a side of the upper buckled portion  31 , and specifically, the side of the upper buckled portion  31  is away from a side of the second end  102  of the lens  10 . A widest width of the annular flange  310  and the width of the lower end of the elongated hole  12  are equal, and the widest width of the annular flange  310  is wider than the width of the upper end of the elongated hole  12  such that the annular flange  310  may be inserted through the lower end of the elongated hole  12  rather than through the upper end of the elongated hole  12 . A width of the upper buckled portion  31  without the annular flange  310  and the width of the upper end of the elongated hole  12  are equal, and the distance between the annular flange  310  and the second buckle  30  is equal to the thickness of the lens  10 . Therefore, the upper buckled portion  31  may be received at the upper end of the elongated hole  12 , and the annular flange  310  and the second buckle  30  can be buckled on the lens  10 . 
     As shown in  FIG. 8 , the lower buckled portion  32  of the second buckle  30  has a protrusion  320  formed at an end and at a side of the lower buckled portion  32 . In other words, the protrusion  320  laterally protrudes from the lower buckled portion  32 . Similarly, the protrusion  320  protrudes away from the side of the second end  102  of the lens  10 , and the distance between the protrusion  320  and the second buckle  30  is equal to the thickness of the lens  10 . Therefore, the protrusion  320  and the second buckle  30  can be buckled on the lens  10 . 
     As shown in  FIG. 3 , when the user would like to combine the lens  10  with the first buckle  20  and the second buckle  30 , the lens  10  is rotated to make the opening  11  disposed downwards, and the neck portion  212  of the fixed element  21  of the first buckle  20  is inserted through the tapered portion  112  of the opening  11  (as shown in  FIG. 4A ) for the neck portion  212  to be received in the receiving portion  111  of the opening  11 . Next, the lens  10  is rotated to make the opening  11  disposed horizontally as shown in  FIG. 3  and  FIG. 4B . The fixed element  21  is difficult to detach because the smallest width of the tapered portion  112  (the second width d 2 ) is shorter than the upper side and the lower side of the neck portion  212  (the third width d 3 ). Besides, the first buckle  20  and the lens  10  are stably fixed by the head portion  211  and the first buckle  20  to be buckled on the lens  10  because the distance between the head portion  211  and the first buckle  20  are equal to the thickness of the lens  10 . 
     As shown in  FIG. 6  to  FIG. 8 , the upper buckled portion  31  of the second buckle  30  is inserted through the lower end of the elongated hole  12  of the lens  10 , and the lens  10  is relative to the second buckle  30  and downwardly moved for the upper buckled portion  31  to receive the upper end of the elongated hole  12 . In a preferred embodiment, the protrusion  320  of the lower buckled portion  32  abuts an edge of the notch  13  rather than being received inside the notch  13  due to misalignment between the elongated hole  12  and the notch  13 . Therefore, by pushing the lens  10 , the edge of the notch  13  is forced across the protrusion  320 , such that the lower buckled portion  32  is received into the notch  13  (as shown in  FIG. 8 ). The annular flange  310 , the protrusion  320 , and the second buckle  30  are buckled on the lens  10  because the distances between the annular flange  310  and the second buckle  30  and the distances between the protrusion  320  and the second buckle  30  are equal to the thickness of the lens  10 . 
     Therefore, the complete eyewear is composed of the lens  10 , the first buckle  20 , the second buckle  30 , and two temples (not shown in figures). The lens  10  can be detached by reversing the above-described steps. 
     In summary, the lens  10 , the first buckle  20 , and the second buckle  30  of the present invention are easy to be assembled by the combination of the fixed element  21  of the first buckle  20  and the first end  101  of the lens  10 , and by the combination of the upper buckled portion  31  and the lower buckled portion  32  of the second buckle  30  with the second end  102  of the lens  10 . Therefore, the lens  10  is not only easy to be buckled to the first buckle  20  and the second buckle  30 , but also easy to be detached for changing the lens  10  by the user. 
     Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.