referring to fig4 the preferred embodiment of a swimming goggles 1 according to the present invention is show to comprise a right lens frame 2 , a left lens frame 3 and a strap mean 5 , wherein each of the lens frames 2 , 3 has a lens retaining spaces 21 , 31 for insert molding a lens units 22 , 32 thereon . the right lens frame 2 and the left lens frame 3 respectively has a gaskets 23 , 33 each of which is formed integrally with far away from the side of each of the lens units 22 , 32 for touching the periphery of a wearer &# 39 ; s eyehole . the up and down periphery of the lens frames 2 , 3 have a connection bases 24 , 34 ( only show in the up periphery of each lens frame ) each of which is a slots 25 , 35 that is formed recess toward on the each lens frame 2 , 3 in this embodiment , as show in fig4 the connection base 24 , 34 have a openings 241 , 341 each of which is respectively mounted on the connection bases 24 , 34 for facility a first strap 50 , a second strap 51 of the strap mean 5 passing through the slots 25 , 35 respectively . the strap mean 5 includes a first strap 50 , a second strap 51 and a bunching element 52 , wherein the first strap 50 and the second strap 51 are usually made of rubber and the bunching element 52 is formed integrally with the first strap 50 and the second strap 51 that are combined the first strap 50 and the second strap 51 at the middle in which the swimming goggles 1 is divided forming two areas by the bunching element 52 . moreover , the first strap 50 and the second strap 51 have a free ends 501 , 511 which are usually a plane shape and the each straps 50 , 51 is generally rotundity in cross section . the strap mean 5 further includes a receiving element 53 , a fastener 54 , wherein the receiving element 53 is a sleeve that have two through hole 531 thereon for combination the free ends 501 , 511 of each of the straps 50 , 51 together . the fastener 54 which has a adjusting hole 541 , 542 that are located both side of the fastener for passing through and adjusting the free ends 501 , 511 of each of the straps 50 , 51 respectively . referring to fig5 and fig6 during assembly , taking the free ends 501 , 511 of the first strap 50 and the second strap 51 are respectively passing through the connection bases 24 , 34 of the right lens frame 2 and the left lens frame 3 . as show in fig5 the free ends 501 , 511 of the first strap 50 and the second strap 51 are assembled which have passed through the connection base 24 , the receiving element 53 and the adjusting hole 541 of the fastener 54 . referring one more to fig5 the left lens frame 3 is disassemble with the other free end of the first strap 50 and the second strap 51 , during assembly , the free ends 501 , 511 of the first strap 50 and the second strap 51 are respectively passing through the connection base 34 of the left lens frame 3 and the through hole 531 of the receiving element 53 , leading to the first strap 50 and the second strap 51 connection to the receiving element 53 together , and then dividing the first strap 50 and the second strap 51 pass through the adjusting hole 542 of the fastener 54 respectively , such get the same pattern in which the first strap 50 and the second strap 51 passing through the adjusting hole 541 of the fastener 54 , as show the right lens frame 2 of in fig5 . referring to fig6 the free ends 501 , 511 of the first strap 50 and the second strap 51 are respectively passing through the adjusting holes 541 , 542 of the fastener 54 such that the first strap 50 and the second strap 51 can be securely mounted on the right lens frame 2 and the left lens frame 3 . again referring to fig7 and fig8 are a top view and front view of wearing on user &# 39 ; s head to adjusting the span of the lens frames embodiment of the swimming goggles of the present invention . since the first strap 50 , the second strap 51 are passing through the connection bases 24 , 34 of the right lens frame 2 and the left lens frame 3 , thereby the right lens frame 2 and the left lens frame 3 can be respectively voluntary moved the first strap 50 , the second strap 51 thereon and can not any influence each other , as well as the right lens frame 2 and the left lens frame 3 are not limited in adjusting angle , so as to adjust the right lens frame 2 and the left lens frame 3 matching the periphery of a wearer &# 39 ; s eyehole directly without take off the swimming goggles 1 and never influence the adjusting span of the right lens frame 2 and the left lens frame 3 each other when the swimming goggle in adjusting ( as show in fig8 ). referring to fig7 it is obvious that the right lens frame 2 is moved toward the right ( a broken line position and as show in arrows ), the left lens frame 3 is without moved toward direction the right . on the contrary , the left lens frame 3 can be moved toward direction the left by itself ( a broken line position and as show in arrows ) so as to adjust the right lens frame 2 and the left lens frame 3 respectively and can not influence each other , to provide securely matching with the periphery of wearer &# 39 ; s eyehole respectively , such that it can get more comfortable and prevent effectively the seepage of water when the swimming goggles are in use . referring to fig9 - 10 illustrate the second and third embodiment of a pair of swimming goggles 1 ′, 1 ″ according to the present invention . as show in fig9 the second embodiment is generally similar to the first preferred embodiment , comprising a right lens frame 2 ′, a left lens frame 3 ′ and a strap mean 5 ′, the main different residing in the construction of the first strap 50 ′ and the second strap 51 ′ of the strap mean 5 ′ have not a bunching element , the rest parts e . g . a connection bases 24 ′, 34 ′, of the right lens frame 2 ′, a left lens frame 3 ′, a receiving element 53 ′ which is a sleeve , a fastener 54 ′ are all same the first preferred embodiment , such that the right lens frame 2 ′ and the left lens frame 3 ′ can be respectively voluntary moved the first strap 50 ′ and the second strap 51 ′ thereon and can not any influence each other . in addition , as show in fig1 , the swimming goggles 1 ″ is the third embodiment which is generally similar to the second preferred embodiment , comprising a right lens frame 2 ″, a left lens frame 3 ″ and a strap mean 5 ″, the main different residing in the construction of the first strap 50 ″ and the second strap 51 ″ of the strap mean 5 ″ have a bunching element 52 ″ in center of each strap that the bunching element 52 ″ is same the sleeve 53 which has showed the first preferred embodiment for combination the first strap 50 ″ and the second strap 51 ″ together , the rest parts e . g . a connection bases 24 ″, 34 ″, of the right lens frame 2 ″, a left lens frame 3 ″, a receiving element 53 ″ and a fastener 54 ″ are all same the first preferred embodiment , such that the right lens frame 2 ″ and the left lens frame 3 ″ can be respectively voluntary moved the first strap 50 ″ and the second strap 51 ″ thereon and can not any influence each other when the lens frames 2 ″, 3 ″ are in adjustment . in addition to , the receiving elements 53 , 53 ′ of in fig6 and fig9 should be taking off from the first straps 50 , 50 ′ and the second straps 51 , 51 ′ and each lens frames 2 , 3 and 2 ′, 3 ′ can be still respectively voluntary moved the first strap 50 , 50 ′ and the second strap 51 , 51 ′ thereon and can not any influence each other when the lens frames 2 , 3 and 2 ′, 3 ′ are in adjustment . while the present invention has been described in connection with what is considered the most practical and preferred embodiment , it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements , which the strap mean comprise only one strap that is passing through the left lens frame and the right lens frame , or the connection base is protrude on the left lens frame and the right lens frame , or the connection base is mounted on the left side and right side of the periphery of each lens - frames etc ., included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements .
a pair of swimming goggles for swimming pool purposes comprising : a left lens frame , a right lens frame , two lens units and a strap mean , each of lens frames has an inner periphery that defines a lens retaining space for receiving a lens unit and the periphery of each lens frame have at least one connection base . a strap mean for passing through the connection base of each of lens frames and tightening the swimming goggles to a wearer &# 39 ; s head , such the swimming goggles can effectively guard against interference each other during the adjusting and can respectively conform with a wearer &# 39 ; s eyehole contour , so as to provide more comfortable fitting and prevent the seepage of water when the swimming goggles are in use .