1. Field of the Invention
The present invention relates to swimming goggles, and particularly to swimming goggles which have easily-adjustable buckles for tightening and loosening a head strap without taking off the swimming goggles.
2. Related Art
Generally, it is necessary to adjust a head strap when wearing swimming goggles. As is well known, the length of a head strap is being adjusted with buckles of frames of swimming goggles. Early buckles are only intended to allow the head strap to pass through. Once the head strap is to be adjusted, it has to be taken off from a wearer first, and then is manually moved backwards and forwards through the buckles in a direction of where it is passed through. Due to the inconvenient adjustment of the head strap, late buckles of swimming goggles are improved to have an engaging structure. The engaging structure has an engaging arm for being engaged with saw-shaped slots of a head strap so as to retain the head strap in place, whereby the head strap is only allowed to be tightened in one direction, without taking off the swimming goggles. To loosen the head strap, the engaging arm is to be disengaged with the saw-shaped slots. As a result, adjustment of the head strap of traditional swimming goggles depends entirely on the engagement and disengagement of the engaging arm and the saw-shaped slots.
Although the head strap of the above-mentioned traditional swimming goggles is adjustable without being taken off, the traditional buckles and head strap are still cumbersome and large in size, and therefore cause a higher cost of manufacturing.
Accordingly, an object of the present invention is to provide swimming goggles having buckles which are easily and detachably to be assembled, and enable a quick adjustment of a head strap without taking off the swimming goggles, and have simple structures so as to further lower the manufacturing cost.
To achieve the above-mentioned object, swimming goggles of the present invention comprise a frame body, lenses, buckles attached to left and right portions of the frame body, and a head strap passed through the buckles; wherein each of the buckles comprises a base having outer and inner surfaces, a connecting portion, and a guiding portion, the connecting portion connected with the left and right portions of the frame body, the guiding portion forming an opening therein and being provided with a rib dividing the opening into a first guiding hole adjacent to the connecting portion, and a second guiding hole adjacent to the operating portion; and an operating portion provided with a pressing lip formed adjacent to the second guiding hole, the pressing lip extending towards the inner surface of the base and beyond an outer surface of the rib; and wherein the head strap passes through the first guiding hole from the inner surface of the base and around the rib to pass through the second hole and the inner surface again.
With the above-mentioned structure, once the swimming goggles of the present invention is being put on, sides of the strap with respect to the first guiding hole are being pulled and stretched outwards to be attached to the free end portions of the strap with respect to the second guiding hole, wherein the free end portions are frictionally engaged with the pressing lips, and portions of the strap adjacent to the first guiding hole are frictionally engaged with the ribs. Accordingly, the head strap is firmly retained by the frictional engagement with the ribs and the pressing lips, and is therefore not moveable. When the strap is needed to be loosened, just pull the operating portions outwards towards the outer surfaces to release the free end portions engaged by the pressing lips and to lower friction between the strap and the ribs, so as to allow the strap to move automatically within the first and second guiding holes, without being taken off from a wearer. When the strap is to be tightened, just pull the free end portions backwards to a desired length, without being taken off from the wearer
Referring to
The buckles 4 are made of thermoplastic polyurethane (TPU), each buckle 4 comprising a base 40 having outer and inner surfaces 401, 402, and an operating portion 43, wherein the base 40 further has a connecting portion 41 and a guiding portion 42. The connecting portion 41 slightly bends inwards and towards the lenses 30, 31 and has a substantially board shape. The connecting portion 41 forms a connecting hole 410 thereon. The left and right frames 20, 21 are provided with hook portions 202, 212 which bend inwards and towards the lenses 30, 31, respectively. The connecting portions 41 are detachably hooked in the hook portion 202, 212 with the connecting holes 410 so as to connect the bases 40 with the left and right frames 20, 21. The guiding portion 42 forms an opening 421 therein and is provided with a rib 422 which divides the opening 421 into a first guiding hole 423 adjacent to the connecting portion 41, and a second guiding hole 424 adjacent to the operating portion 43. The rib 422 has an oval section (as shown in
Particularly, a maximum width of the guiding portion 42 is larger than that of the operating portion 43, the maximum width of the operating portion 43 is larger than that of the connecting portion 41. Because the connecting portion 41 is thinner than the guiding portion 43 and the operating portion 43, and has the substantially board shape, the operating portion 43 is therefore movable with the connecting portion 41 functioned as an axis.
The head strap 5 is made of silicone and has two opposite free end portions 501, 502. Two protruding portions 50 are formed on a side of the head strap 5 and adjacent to the free end portions 501, 502, respectively (as shown in
Referring to
Referring to
It is understood that the invention may be embodied in other forms within the scope of the claims. Thus the present examples and embodiments are to be considered in all respects as illustrative, and not restrictive, of the invention defined by the claims.
Number | Date | Country | Kind |
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101204879 | Mar 2012 | TW | national |