Abstract:
The present invention discloses a safety goggles structure having a frame connecting portion, a frame latch portion, two frame snap-in portions, a lens connecting portion, a lens latch portion, two lens snap-in portions and two elastic buckles to mount a lens onto a frame for achieving the effect of securely connecting the frame and the lens or improving their connecting stability. With an upper guide channel slantingly and concavely disposed on the frame and a lower guide channel vertically up-and-down and concavely disposed on the frame, gases and liquids can pass through without producing fogs and accumulating liquid on the lens, and foreign substances cannot enter into the safety goggles easily to cause any safety issue. With the design of an upper gutter on the frame, liquid splashed onto the safety goggles can flow along either side of the upper gutter to prevent liquid accumulation or leaking.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a safety goggles structure, and more particularly to a safety goggles structure capable of improving the connecting stability and preventing fogs and liquid accumulations or leaks. 
       BACKGROUND OF THE INVENTION 
       [0002]    At a general construction site, workers usually wear a pair of goggles to protect their eyes from foreign matters such as dusts, pebbles and liquid splashes produced during constructions. 
         [0003]    Traditional goggles are nothing more than a structure composed of a frame and lenses latched and connected with each other, but the design of the latch and connected structure is very simple, and thus the frame and the lenses may be easily separated from each other when the goggles are worn or removed. 
         [0004]    In addition, fogs are easily produced on the lenses of the goggles in the situation when the temperature changes or when the workers inhale and exhale, and thus causing a safety issue during construction. To overcome the issue of having fogs on the lenses, the present safety goggles come with the design of air holes, but the air holes constitute a leak of the safety goggles, and the foreign matters such as dusts, pebbles, and liquid splashes still have chances to enter into the safety goggles or damage the eyes of construction workers. 
         [0005]    Referring to  FIG. 4  for U.S. Pat. Application No. 2004/0117898, a design of safety goggles for providing an anti-fog effect and protecting eyes is disclosed. However, if liquid splashes (such as rain water) enter into the safety goggles, liquid splashes are accumulated in the air holes to clog the air holes and disables the function of the air holes. After the liquid is accumulated constantly, the issues of overflows and leaks arise. 
         [0006]    Therefore, it is a subject of the present invention to develop a safety goggles structure capable of improving the connecting stability of the safety goggles structure and preventing fogs, liquid accumulations and leaks. 
       SUMMARY OF THE INVENTION 
       [0007]    In view of the foregoing shortcomings of the prior art, the inventor of the present invention has conducted extensive researches and experiments based on years of experience in the related field and finally invented a safety goggles structure to achieve the effect of improving the connecting stability of the safety goggles structure and preventing fogs, liquid accumulations and leaks. 
         [0008]    The primary objective of the present invention is to provide a safety goggles structure for improving the connecting stability of the safety goggles structure and preventing fogs, liquid accumulations and leaks. 
         [0009]    To achieve the foregoing objective, the safety goggles structure of the invention comprises: 
         [0010]    a frame substantially in a ring-shape and having an opening around the frame, and the frame includes a frame connecting portion, a frame latch portion, two frame snap-in portions, at least one upper guide channel, at least one lower guide channel and an upper gutter, wherein the frame connecting portion is disposed at the top of the frame, and the frame latch portion is disposed at the bottom of the frame, and the two frame snap-in portions are disposed respectively on both lateral sides of the frame, and the upper guide channel is slantingly and concavely disposed at the front side of the top of the frame and interconnected to the opening and the exterior of the frame, and the lower guide channel is vertically up-and-down and concavely disposed at the bottom of the front side of the frame and interconnected to the opening and the exterior of the frame, and the upper gutter is concavely disposed at an upper side of the frame, and each of the two frame snap-in portions has a stop portion separately; a lens, covered onto the opening, and having a periphery covered onto the upper guide channel and the lower guide channel, and the lens having a lens connecting portion, a lens latch portion and two lens snap-in portions, wherein the lens connecting portion is disposed at the top of the lens and latched to the frame connecting portion, and the lens latch portion is disposed at the bottom of the lens and latched to the frame latch portion, and the two lens snap-in portions are disposed on both lateral sides of the lens and latched to the two frame snap-in portions respectively, and each of the two lens snap-in portions includes a snap-in hole separately; 
         [0011]    and two elastic buckles, having a top pressing edge separately, and inserted and latched into the two snap-in holes respectively, wherein the two top pressing edges abut the two stop portions respectively. 
         [0012]    With the aforementioned design of various latch structures, the present invention achieves the effect of securely connecting the frame and the lens when the goggles structure is in use, so as to improve the connecting stability. 
         [0013]    With the upper guide channel slantingly and concavely disposed at the top of the front side of the frame and upwardly tapered and the lower guide channel disposed at the bottom of the front side of the frame and upwardly tapered, air enters from the bottom and discharges from the top when the safety goggles structure of the invention is in use, so as to achieve the effect of distributing gases. In other words, the lens will not produce fogs. With the slanting design, foreign substances such as dusts, pebbles and liquid splashes will not enter into the safety goggles easily or damage the eyes of workers. The upper guide channel and the lower guide channel come with an upwardly tapered design. From conservation of mass, if air flows from a large cross-sectional area to a small cross-sectional area, the speed of the air flow will become larger, such that a jet flow is formed when the air enters into the lens and then discharges from the lens. In addition to the improvement of the anti-fog effect in the lens, the present invention can also enhance the heat dissipating effect. 
         [0014]    With the upwardly tapered design of the upper guide channel and the upper gutter, liquid splashed onto the safety goggles will not enter into the safety goggles easily, since the upwardly tapered upper guide channel provides a small outlet for discharging the airflow. The liquid splashes will flow down along both lateral sides of the upper gutter without causing the issue of accumulating liquid. If liquid overflows from the upper guide channel into the safety goggles, the liquid will flow down along the slanting and concaved upper guide channel and the internal surface of the lens to the lower guide channel vertically up-and-down and concavely disposed at the bottom so as to effectively avoid liquid from contacting a wearer&#39;s eyes. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]      FIG. 1  is an exploded view of a preferred embodiment of the invention; 
           [0016]      FIG. 2  is a perspective view of a frame in accordance with a preferred embodiment of the invention from another viewing angle; 
           [0017]      FIG. 3  is a perspective view of a lens in accordance with a preferred embodiment of the invention from another viewing angle; 
           [0018]      FIG. 4  is a perspective view of an elastic buckle in accordance with a preferred embodiment of the present invention; 
           [0019]      FIG. 5  is a perspective view of an elastic buckle in accordance with a preferred embodiment of the present invention from another viewing angle; 
           [0020]      FIG. 6  is a perspective view of a preferred embodiment of the invention; 
           [0021]      FIG. 7  is a cross-sectional view of Section A-A of  FIG. 6 ; 
           [0022]      FIG. 8  is a bottom view of a portion of  FIG. 6 ; 
           [0023]      FIG. 9  is a cross-sectional view of Section B-B of  FIG. 6 ; 
           [0024]      FIG. 10  is a cross-sectional view of Section C-C of  FIG. 6 ; and 
           [0025]      FIG. 11  is a schematic view of an application mode in accordance with a preferred embodiment of the invention. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0026]    The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings. 
         [0027]    Referring to  FIG. 1  for an exploded view of a preferred embodiment of the present invention, a safety goggles structure  1  of the invention comprises a frame  2 , a lens  3  and two elastic buckles  4 . 
         [0028]    With reference to  FIGS. 1 and 2 ,  FIG. 2  shows a perspective view of a frame in accordance with a preferred embodiment of the invention from another viewpoint, the frame  2  is substantially in a ring-shape and has an opening  21  around the frame  2 , and the frame  2  includes a frame connecting portion  22 , a frame latch portion  23 , two frame snap-in portions  24 , at least one upper guide channel  251 , at least one lower guide channel  252  and an upper gutter  26 . The frame connecting portion  22  is disposed at the top of the frame  2 , and the frame latch portion  23  is disposed at the bottom of the frame  2 , and two frame snap-in portions  24  are disposed on both lateral sides of the frame  2  respectively, and the upper guide channel  251  is upwardly tapered and slantingly and concavely disposed at the top of the front side of the frame  2  and interconnected with the opening  21  and the exterior of the frame  2 , and the lower guide channel  252  is upwardly tapered and concavely disposed at the bottom of the front side of the frame  2  and interconnected to the opening  21  and the exterior of the frame  2 , and the upper gutter  26  is disposed at the upper side of the frame  2 , and each frame snap-in portion  24  includes a stop portion  241 . 
         [0029]    In this embodiment, the frame connecting portion  22  is a baffle  221 , and the baffle  221  has an external baffle periphery  2211 , and the frame latch portion  23  has a latch protrusion  231 , and two stop portions  241  are L-shaped embedding hooks disposed on both lateral sides of the frame  2  respectively, and the frame  2  is divided into a front portion  28  and a rear portion  29 , and the front portion  28  of the frame  2  is made of a hard material, and the rear portion  29  of the frame  2  is made of a soft material, and the rear portion  29  of the frame  2  is attached to the front portion  28  of the frame  2  after a secondary processing, and the soft material made rear portion  29  of the frame  2  provides a comfortable wearing of the safety goggles structure  1 . 
         [0030]    With reference to  FIGS. 1 and 3 ,  FIG. 3  shows a perspective view of a lens in accordance with a preferred embodiment of the invention from another viewing angle, the lens  3  comprises a lens connecting portion  32 , a lens latch portion  33  and two lens snap-in portions  34 . The lens connecting portion  32  is disposed at the top of the lens  3 , and the lens latch portion  33  is disposed at the bottom of the lens  3 , and the two lens snap-in portions  34  are disposed on both lateral sides of the lens  3 , and each lens snap-in portion  34  includes a snap-in hole  341  and an embedding edge  342 . 
         [0031]    In this preferred embodiment, the lens connecting portion  32  is a notch  321  having an internal notch rim  3211  and a flange  3212  disposed at the bottom of the notch  321 , and the lens latch portion  33  includes a latch groove  331 , and the latch protrusion  231  and the latch groove  331  are in a backwardly tapered shape. 
         [0032]    With reference to  FIGS. 4 and 5 ,  FIG. 4  shows a perspective view of an elastic buckle in accordance with a preferred embodiment of the present invention and  FIG. 5  shows a perspective view of an elastic buckle in accordance with a preferred embodiment of the present invention from another viewing angle. Each of the two elastic buckles  4  has a top pressing edge  41 , at least one connecting hole  42 , a wedge-shaped connector  43  and at least one wedge-shaped protrusion  44 , and the wedge-shaped connector  43  can be elastically rotated along with the elastic buckle  4 . 
         [0033]    With reference to  FIGS. 1 to 5  as well as  FIGS. 6 to 10 ,  FIG. 6  shows a perspective view of a preferred embodiment of the present invention, and  FIG. 7  shows a cross-sectional view of Section A-A of  FIG. 6 , and  FIG. 8  shows a bottom view of a portion of  FIG. 6 , and  FIG. 9  shows a cross-sectional view of Section B-B of  FIG. 6 , and  FIG. 10  shows a cross-sectional view of Section C-C of  FIG. 6 . 
         [0034]    When the lens  3  and the frame  2  are assembled, the lens  3  is covered onto the opening  21  and the periphery of the lens  3  is covered onto the upper guide channel  251  and the lower guide channel  252 , and the lens connecting portion  32  of the lens  3  is latched to the frame connecting portion  22  of the frame  2 , and the lens latch portion  33  of the lens  3  is latched to the frame latch portion  23  of the frame  2 , and the two lens snap-in portions  34  of the lens  3  are snapped into the two frame snap-in portions  24  of the frame  2 . In other words, the baffle  221  of the frame connecting portion  22  is latched into the notch  321  of the lens connecting portion  32 , such that the external baffle rim  2211  is attached onto the internal notch rim  3211 , and the baffle  221  stops the flange  3212 , and the latch groove  331  of the lens latch portion  33  is latched with the latch protrusion  231  of the frame latch portion  23 , and the two L-shaped embedding hooks of the frame  2  are embedded with the two embedding edges  342  of the lens  3  respectively. 
         [0035]    When the lens  3  and the frame  2  are assembled, the lens  3  is tilted slightly such that the baffle  221  of the frame connecting portion  22  is latched to the notch  321  of the lens connecting portion  32 , such that the external baffle rim  2211  is attached with the internal notch rim  3211 , and the baffle  221  stops the flange  3212 . If it is necessary to move the lens  3  forward, the forward movement of the lens  3  will be limited, since the baffle  221  stops the flange  3212 . If it is necessary to move the lens  3  backward or downward, the backward and downward movements of the lens  3  will be limited, since the lens  3  is covered onto the periphery of the frame  2 . If it is necessary to move the lens  3  to the left or the right, the external baffle rim  2211  will limit the left and right movements of the internal notch rim  3211 , since the baffle  221  is latched with the notch  321 . Therefore, the left and right movements of the lens  3  are limited. If it is necessary to move the lens  3  upward, the external baffle rim  2211  will limit the upward movement of the bottom of the notch  321 , since the baffle  221  is latched with the notch  321 . Therefore, the upward movement of the lens  3  will be limited. In summation, the movements of the lens  3  in six directions are all limited, and thus the lens  3  is mounted onto the frame  2 . The bottom of the lens  3  is pushed gently to latch the latch groove  331  of the lens latch portion  33  with the latch protrusion  231  of the frame latch portion  23  of the frame  2 . Since the latch protrusion  231  and the latch groove  331  come with a backwardly tapered design (as shown in  FIG. 8 ), the forward movement of the bottom of the lens  3  is limited, therefore the lens  3  can be mounted onto the frame  2 . 
         [0036]    After the lens  3  is mounted onto the frame  2 , each elastic buckle  4  is inserted and snapped into each snap-in hole  341  of the lens  3 , and each top pressing edge  41  abuts each stop portion  241  of the frame  2 , and the rear edge of each wedge-shaped connector  43  abuts the rear edge of each snap-in hole  341 . In the foregoing process, the wedge-shaped connector  43  of the elastic buckle  4  is elastic, such that when the wedge-shaped connector  43  of the elastic buckle  4  is inserted into the snap-in hole  341 , the wedge-shaped connector  43  can be turned elastically and slightly first and then inserted into the snap-in hole  341 . After the wedge-shaped connector  43  is inserted into the snap-in hole  341 , the elastic wedge-shaped connector  43  resumes its original position to latch the snap-in hole  341 . Further, the rear edge of the wedge-shaped connector  43  of the elastic buckle  4  abuts the rear edge of the snap-in hole  341  of the lens  3 , and the top pressing edge  41  of the elastic buckle  4  abuts the stop portion  241  of the frame  2 , such that the lens  3  can be securely mounted onto the frame  2  by the foregoing connecting and latching methods. 
         [0037]    With reference to  FIGS. 1 to 10  as well as  FIGS. 11 ,  FIG. 11  shows a schematic view of an application mode of a safety goggles structure in accordance with a preferred embodiment of the invention, the safety goggles structure  1 , the frame  2  further comprises a circular flexible edge  27  disposed around the rear side of the frame  2 , and the two elastic buckles  4  have two connecting holes  42  for separately connecting to both ends of a headband  5 . When the safety goggles structure is used, the headband  5  is provided for a user&#39;s head (not shown in the figure) to wear the safety goggles. With the circular flexible edge  27 , the frame  2  is in contact with a worker&#39;s head tightly and comfortably. In addition, the two elastic buckles  4  have at least one wedge-shaped protrusion  44  separately for stopping the headband  5  from sliding. In  FIG. 11 , the wedge-shaped protrusions  44  are disposed on the external side of the elastic buckle  4 . Of course, the wedge-shaped protrusions  44  can be designed to be disposed on the internal side of the elastic buckle  4  as well. 
         [0038]    In summation, the design of various latching structures in accordance with the present invention provides a secured connection of the frame  2  and the lens  3  of the safety goggles structure  1 , such that the frame  2  or the lens  3  will not separate from each other when a user wears or removes a goggle, or removes the elastic buckle  4  for cleaning or maintenance, so that the frame  2  or the lens  3  will not be damaged by falling down onto the ground. 
         [0039]    With the upwardly tapered upper guide channel  251  slantingly and concavely disposed at the top of the front side of the frame  2  and the upwardly tapered lower guide channel  252  disposed at the bottom of the front side of the frame  2 , air enters from the bottom and discharges from the top to achieve the purpose of circulating air when a user wears the safety goggles structure  1 . In other words, the lens  3  will not produce fogs. With the foregoing slanting design, foreign substances such as dusts, pebbles and liquid splashes will not enter into the safety goggles or damage the eyes of a worker. In addition, the upper guide channel  251  and the lower guide channel  252  come with an upwardly tapered design. Based on the conservation of mass, when air flows from a large cross-sectional area to a small cross-sectional area, the speed of airflow becomes larger, such that a jet flow is formed when the air enters into the lens  3  first and then discharges from the lens  3 , so as to improve the anti-fog efficiency in the lens  3  as well as the heat dissipating efficiency in the lens  3 . 
         [0040]    With the upwardly tapered design of the upper guide channel  251  and the design of the upper gutter  26 , liquid splashed onto the safety goggles will not enter into the safety goggles easily, since the upwardly tapered upper guide channel  251  provides a small outlet for discharging the airflow. The liquid splashes will flow down along both lateral sides of the upper gutter  26  without causing the issue of accumulating liquid. If liquid overflows from the upper guide channel  251  into the safety goggles, the liquid will flow down along the slanting and concaved upper guide channel  251  and the internal surface of the lens  3  to the lower guide channel  252  vertically up-and-down and concavely disposed at the bottom so as to effectively avoid liquid from contacting a wearer&#39;s eyes. 
         [0041]    In summation of the description above, the present invention improves the connecting stability and prevents fogs, liquid accumulations and leaks by an improved structural design, and complies with the patent application requirements, and thus is duly filed for patent application. 
         [0042]    While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.