Abstract: A head strap for swimming goggles includes two ends, a rear portion, and two side portions. Each side portion is located between the rear portion and one of the ends. A slit extends from of one of the side portions through the rear portion to the other side portion. The slit divides each side portion into an upper side section and a lower side section and divides the rear portion into an upper rear section and a lower rear section. A portion of the upper side section and a portion of the lower side section of each side portion clamps one of two sides of a head of a wearer. The upper and lower rear sections of the rear portion of the head strap clamp the back of the head of the wearer. The head strap can be assembled with a body and two buckles to form swimming goggles.

Abstract: Swimming/diving goggles includes a main body with a head strap coupling portion. An attachment portion is formed on an end of a head strap. A buckle includes two sidewalls defining a space. An eccentric axle extends between upper front portions of the sidewalls and engages with the attachment portion. Front and rear posts extend between the sidewalls and define a passage. The end of the head strap extends through a rear opening of the buckle into the space, extends through the passage, and is wound around to form a bend. The head strap includes an inner section and an outer section having the attachment portion. The head strap and the buckle are jointly movable. A tightening force acting on the inner section makes the inner section form another bend in the passage. The inner section presses against the front post and the rear post to position the head strap.

Abstract: Swimming/diving goggles includes a main body with a head strap coupling portion. An attachment portion is formed on an end of a head strap. A buckle includes two sidewalls defining a space. An eccentric axle extends between upper front portions of the sidewalls and engages with the attachment portion. Front and rear posts extend between the sidewalls and define a passage. The end of the head strap extends through a rear opening of the buckle into the space, extends through the passage, and is wound around to form a bend. The head strap includes an inner section and an outer section having the attachment portion. The head strap and the buckle are jointly movable. A tightening force acting on the inner section makes the inner section form another bend in the passage. The inner section presses against the front post and the rear post to position the head strap.

Abstract: A buckle includes a coupling block engaged with a body of swimming/diving goggles. A pressing block is mounted to an outer side of the coupling block. A pin is mounted to an inner side of the pressing block and has a spacing to a pressing edge of an insertion hole of the coupling block. The inner side of the pressing block includes first and second surfaces. A fulcrum is located between the first and second surfaces and abuts a pressing face on the outer side of the pressing block. A section of a head strap is received in the insertion hole and wound around the pin. The pressing block can be pivoted about the fulcrum to move the pin away from the pressing edge of the coupling block to increase the spacing between the pin and the pressing edge, allowing loosening of the head strap.

Abstract: A buckle includes a base having a plate. A compartment is defined between upper and lower walls of the plate. A front end of a pressing board is engaged with a front end of the plate. A rear end of the pressing board includes a pressing face and two guiding faces. An operating button is received in the compartment and includes a resilient section having upper and lower buttons extending through slots in the upper and lower walls. The operating button can be pressed to cause two pressing surfaces of the resilient section to press against the guiding faces of the pressing board for moving the pressing board rearward relative to the base, disengaging the pressing face of the pressing board from the head strap to permit the head strap to move in a reverse direction for loosening the head strap.

Abstract: A buckle includes a base having a plate. A compartment is defined between upper and lower walls of the plate. A front end of a pressing board is engaged with a front end of the plate. A rear end of the pressing board includes a pressing face and two guiding faces. An operating button is received in the compartment and includes a resilient section having upper and lower buttons extending through slots in the upper and lower walls. The operating button can be pressed to cause two pressing surfaces of the resilient section to press against the guiding faces of the pressing board for moving the pressing board rearward relative to the base, disengaging the pressing face of the pressing board from the head strap to permit the head strap to move in a reverse direction for loosening the head strap.

Abstract: A buckle includes a base engaged with a body of swimming/diving goggle. A head strap is extended through a slot in a rear end of the base. A cover is engaged with the body. A space is defined between the cover and the base. A button is mounted in a groove of the cover and made of flexible material. An engagement plate is formed on the button and includes a catch releasably engaging with teeth of the head strap. First and second supporting points are defined between the button and the base. A pressing section is formed between the first and second supporting points. The catch can be disengaged from the teeth of the head strap to allow movement of the head strap in a loosening direction by pressing the pressing section or manually moving the grip.

Abstract: A buckle includes a coupling block engaged with a body of swimming/diving goggles. A pressing block is mounted to an outer side of the coupling block. A pin is mounted to an inner side of the pressing block and has a spacing to a pressing edge of an insertion hole of the coupling block. The inner side of the pressing block includes first and second surfaces. A fulcrum is located between the first and second surfaces and abuts a pressing face on the outer side of the pressing block. A section of a head strap is received in the insertion hole and wound around the pin. The pressing block can be pivoted about the fulcrum to move the pin away from the pressing edge of the coupling block to increase the spacing between the pin and the pressing edge, allowing loosening of the head strap.

Abstract: A buckle includes a base engaged with a body of swimming/diving goggle. A head strap is extended through a slot in a rear end of the base. A cover is engaged with the body. A space is defined between the cover and the base. A button is mounted in a groove of the cover and made of flexible material. An engagement plate is formed on the button and includes a catch releasably engaging with teeth of the head strap. First and second supporting points are defined between the button and the base. A pressing section is formed between the first and second supporting points. The catch can be disengaged from the teeth of the head strap to allow movement of the head strap in a loosening direction by pressing the pressing section or manually moving the grip.

Abstract: A pair of swimming goggles includes two rigid lenses each having an extension. A stub is formed on a front side of each extension, and a button is formed on a distal end of the stub. A frame includes two ring portions receiving the lenses. Each ring portion includes a receptacle extending into an outer side of the ring portion. The outer side of each ring portion includes front and rear walls delimiting the receptacle, and a through-hole extends through the front wall. The extensions of the lens are received in the receptacles. The stub of each lens extends through the through-hole of the outer side of one of the ring portions. The button of each lens is located outside of the frame. A coupling plate is mounted to each lens and has a through-hole through which the stub of one of the lenses extends.

Abstract: A padding device includes a connecting portion for engaging with a body of a pair of swimming/diving goggles. The connecting portion includes a lateral wall extending between front and rear walls. An annular, outer wall extension extends rearward from the lateral wall. A front connecting wall extends from the outer wall extension. An annular, inner wall extension extends perpendicularly to and rearward from an inner edge of the rear wall. A bend extends outward from an inner end of the inner wall extension and has a rear connecting wall located behind the front connecting wall. A spacing portion is defined between the inner and outer wall extensions. The front and rear connecting walls are engaged with each other and seal the spacing.

Abstract: A pair of swimming goggles includes two rigid lenses each having an extension. A stub is formed on a front side of each extension, and a button is formed on a distal end of the stub. A frame includes two ring portions receiving the lenses. Each ring portion includes a receptacle extending into an outer side of the ring portion. The outer side of each ring portion includes front and rear walls delimiting the receptacle, and a through-hole extends through the front wall. The extensions of the lens are received in the receptacles. The stub of each lens extends through the through-hole of the outer side of one of the ring portions. The button of each lens is located outside of the frame. A coupling plate is mounted to each lens and has a through-hole through which the stub of one of the lenses extends.

Abstract: Swimming or diving goggles includes a lens unit including two viewing sections. A front face of each viewing section is a portion of a peripheral face of a cone. The cone has an apex and a bottom face, and the peripheral face extends between the apex and the bottom face. A spacing from a top face of each viewing section to a vertical axis passing through a center of the bottom face in the thickness direction is smaller than a spacing from a bottom face of the viewing section to the vertical axis in the thickness direction. A normal plane perpendicular to each of the two viewing sections is at an acute angle with the vertical axis. Each viewing section is a curved face in a circumferential direction about the vertical axis. A frame mechanism is coupled to the lens unit and in intimate contact with eye sockets of a wearer.

Abstract: A pair of swimming goggles includes a body having a strap coupling section formed on each of two sides thereof. Each strap coupling section includes front and rear faces, with upper and lower grooves formed in the front face. Each groove includes a slot in an outer end thereof and a through-hole in an inner end thereof. The slots and the through-holes extend from the front face through the rear face. A head strap includes two ends each extending in sequence through one of the slots, one of the grooves, one of the through-holes, the other through-hole, the other groove, and the other slot, with the head strap forming upper and lower clamping sections.

Abstract: A pair of swimming/diving goggles includes a main body and two head strap coupling members respectively provided on two sides of the main body. A board is pivotably mounted in a through-hole in each head strap coupling member. A head strap is extended through the through-hole of each head strap coupling member and around the board. A spacing between the board and the outer end wall of the through-hole of each the head strap coupling member is changeable when the board is pivoted, allowing the head strap to move to adjust a tightening length of the head strap. The head strap exerts a clamping force to clamp the head strap between the board and the outer end wall of the through-hole.

Abstract: Swimming or diving goggles includes a lens unit and a frame mechanism coupled to the lens unit. The lens unit includes two viewing sections each having a front face that is a portion of a peripheral face extending between an apex and a bottom face of a cone. The apex is below the bottom face of the cone. A vertical axis passes through a center of the bottom face of the cone. A spacing from a top edge of each viewing section to the vertical axis in a thickness direction is smaller than a spacing from a bottom edge of the viewing section to the vertical axis in the thickness direction A normal plane perpendicular to each viewing section is at an acute angle with the vertical axis. Each viewing section is a curved face in a circumferential direction about the vertical axis. The swimming or diving goggles is ergonomic and more water-tight.

Abstract: Eyewear includes a lens unit and a frame mechanism coupled to the lens unit. The lens unit includes two viewing sections each having a front face that is a portion of a peripheral face extending between an apex and a bottom face of a cone. The apex is below the bottom face of the cone. A vertical axis passes through a center of the bottom face of the cone. A spacing from a top edge of each viewing section to the vertical axis in a thickness direction is smaller than a spacing from a bottom edge of the viewing section to the vertical axis in the thickness direction A normal plane perpendicular to each viewing section is at an acute angle with the vertical axis. Each viewing section is a curved face in a circumferential direction about the vertical axis.

Abstract: A strap adjusting device includes a buckle having two through-holes spaced by a partitioning wall. A pressing member is slideably and rotatably received in each through-hole. The pressing members are movable relative to the buckle to adjust a distance between each pressing member and a pressing edge in each through-hole. At least one resilient strap is mounted to a body of a pair of swimming goggles and includes two ends each of which is wound around one of the pressing members. The strap is pullable to adjust tightness of the strap when the pair of swimming goggles is worn on the head of the user. The pulling force acting on the strap urges each pressing member to move toward one of the pressing edges to tightly clamp the strap and to fix a length of the strap.

Abstract: A pair of swimming goggles includes two lens assemblies and a bridge mounted between the lens assemblies. An inner side of each lens assembly includes a bridge coupling portion having a longitudinal axis at an acute angle with a central vertical axis of the bridge. The bridge includes two legs and an arcuate section interconnected between upper ends of the legs. The bridge defines a space having increasing widths toward lower ends of the legs coupled with the bridge coupling portions. A spacing between a rear side of the lower end of each leg and a vertical axis extending through a rear side of one of the lens assemblies is smaller than a spacing between a rear side of the arcuate section and the vertical axis. The arcuate section has a rear arcuate face. A spacing from the rear arcuate face to the vertical axis decreases downward.