WO2003000350A1

WO2003000350A1 - Buckle assembly for adjusting strap for swimming goggles

Info

Publication number: WO2003000350A1
Application number: PCT/KR2001/001084
Authority: WO
Inventors: Bom Kyu Lee
Original assignee: Bom Kyu Lee
Priority date: 2001-06-25
Filing date: 2001-06-25
Publication date: 2003-01-03

Abstract

The invention is a buckle assembly (100) for goggles for releasably fixing a strap (115) having a plurality of stop members (115a) on its surface, comprising a lens frame (118) having a strap-supporting portion around which the strap (115) is wrapped, a frame opening, a frame-fixing piece; a lens (130), installed in the opening, having a slider-protecting portion extending from a top side of the lens (130), a lower extension (130d) extending from a lower portion of the lens (130), whereby a wall (130f) of the lens defines a space along with the slider-protecting portion (130a) and the lower extension (130d), a frame-securing pillar (130b) projecting from either one of the slider-protecting portion (130a) and lower extension (130d) into the space to engage the frame-fixing piece of the lens frame (118) to support the lens (130) frame thereon and a frame-securing means formed on the periphery of the lens (130) to secure the lens frame (118) on the lens (130); and a slider (117), movable in the space of the lens (130) back and forth between a normal position and a slided-out position, having a slider body and a tooth (117g), the tooth pressing down the strap (115) against the strap-supporting portion (118a) of the lens frame (118) in the normal position of the slide; wherein, when the strap (115) is pulled, one of the stop members (115a) engages the tooth (117g) to drag the slider (117) along in a direction in which the strap (115) is pulled, and when the strap is released, another one of the stop members (115a) engages the tooth (117a) to hold the slider (117) in the normal position.

Description

BUCKLE ASSEMBLY FOR ADJUSTING STRAP FOR SWIMMING

GOGGLES

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to buckle assembly for strap of swimming goggles, and particularly to buckle assembly which can easily adjust the length of a strap for swimming goggles.

Description of the Related Art

A buckle assembly which can easily adjust a strap for swimming goggles is disclosed in International Application No. PCT/KR99/00633 (22 October 1998). Fig. 1 and Fig. 2A are a perspective view and a exploded perspective view showing the prior art swimming goggles with an easy strap length-adjusting buckle assembly. Fig. 2B is a side view of a slider of the prior art swimming goggles.

The swimming goggles comprise a lens assembly 13 comprised of a pair of lens parts 11 and a pair of lens frames 18, an elastic strap 15, a buckle assembly 10 and means 18a for fastening said lens frame 18 formed on an outer side portion of each of said lens parts 11. The buckle assembly 10 holds the strap 15 having a plurality of width-wise ridges 15a and comprises a buckle body 19 having a strap-supporting portion 19a around which the strap 15 is wrapped and a slider 17 slidable between a normal position and a slided-out position with respect to the strap-supporting portion 19a. The slider 17 comprises a strap-pressing piece 17b which presses down the strap 15 against the strap-supporting portion 19a in its normal position. When the strap 15 is pulled, one of the ridges engages with the strap-pressing piece 17b to move the slider 17 to the slided-out position. When the strap 15 is released, another one of the ridges is engaged with the strap-pressing piece 17b to move the slider 17b to the normal position.

Accordingly, the length-adjusting operation can be accomplished with l only one hand so that the user can simply, quickly and more conveniently adjust the length of the strap with a simple arrangement. Also the user can perform the tightening and loosening operations while wearing the swimming goggles on his head. However, the buckle assembly of the swimming goggles may be easily disassembled or disengaged from the lens assembly, e.g. when the user inadvertently drops the swimming goggles onto the floor. Then the slider may impinge against the floor with severe impact. Furthermore, the buckle assembly may be easily disassembled from the swimming goggles without intention during the user's strap length-adjusting operation when an excessive pressing force is applied on the buckle body or slider in upward direction for the lens surface. In such an occasion, the buckle body or slider pushes the lens frame 18 upwardly, to destroy the press-fitting engagement between the lens frame and the lens part.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a buckle assembly that can overcome such problems with the prior art buckle assemblies, while providing all advantages of the prior art, for example, easy strap length-adjustment by one hand and on-head adjustment of the strap length.

One aspect of the present invention is a buckle assembly for goggles for releasably fixing a strap having a plurality of stop members on its surface, comprising a lens frame having a strap-supporting portion around which the strap is wrapped, a frame opening, a frame-fixing piece; a lens, installed in the opening, having a slider-protecting portion extending from a top side of the lens, a lower extension extending from a lower portion of the lens, whereby a wall of the lens defines a space along with the slider-protecting portion and the lower extension, a frame-securing pillar projecting from either one of the slider-protecting portion and lower extension into the space to engage the frame-fixing piece of the lens frame to support the lens frame thereon and a frame-securing means formed on the periphery of the lens to secure the lens frame on the lens; and a slider, movable in the space of the lens back and forth between a normal position and a slided-out position, having a slider body and a tooth, the tooth pressing down the strap against the strap-supporting portion of the lens frame in the normal position of the slide; wherein, when the strap is pulled, one of the stop members engages the tooth to drag the slider along in a direction in which the strap is pulled, and when the strap is released, another one of the stop members engages the tooth to hold the slider in the normal position.

Preferably, the sliding body comprises a pair of sliding elements supported on the lens frame and extending parallel to each other to form a gap therebetween to receive the frame-securing pillar therein such that the movement of the slider is guided by the frame-securing pillar.

According to another aspect, a buckle assembly for goggles for releasably fixing a strap having a plurality of stop members, comprising a lens frame having a frame opening and a frame-fixing piece; a lens, installed within the frame opening, a having frame-protecting portion extending from an upper side end of the lens, a lower extension extending from a lower portion of the lens, a strap-supporting portion around which the strap is wrapped, whereby a wall of the lens between the frame-protecting portion and the lower extension defines a space along with the frame-protecting portion and the lower extension, a frame-securing pillar projecting from either one of the frame-protecting portion and the lower extension into the space to engage the frame-fixing piece of the lens frame to support the lens frame thereon, and a frame-securing means formed on the periphery of the lens to secure the lens frame on the lens; and a slider, movable in the space back and forth between a normal position and a slided-out position, having a slider body and a tooth, the tooth pressing down the strap against the strap-supporting portion of the lens frame in the normal position of the slider; wherein, when the strap is pulled, one of the stop members engages the tooth to drag the slider along a direction in which the strap is pulled, and when the strap is released, another one of the stop members engages the tooth to hold the slider in the normal position.

Preferably, the slider body comprises a guide opening to receive the frame-securing pillar therein such that the movement of the slider is guided by the frame-securing pillar.

According to yet another aspect, a buckle assembly for goggles for releasably fixing a strap having a plurality of stop members, comprising a lens frame having a frame opening and a slider covering portion extending outwardly from the frame opening; a lens, received in the frame opening, having a frame-protecting portion extending from an upper side end of the lens, a lower extension extending from a lower side end of the lens, whereby a stopper wall between the frame-protecting portion and the lower extension defines a space along with the frame-protecting portion and the lower extension, a buckle body-fixing projection projecting from the lower extension into the space, and a frame-securing means formed on the periphery of the lens to secure the lens frame on the lens; a buckle body having a strap-supporting portion around which the strap is wrapped, a hole for receiving the buckle body-fixing projection of the lens to secure the buckle body on the lower extension, and a slider-guiding projection; and a slider, movable on the buckle body back and forth between a normal position and a slided-out position, having a slider body and a tooth, the tooth pressing down the strap against the strap-supporting portion of the buckle body in the normal position of the slide; wherein when the strap is pulled, one of the stop members engages the tooth to drag the slider outwardly, and when the strap is released, another one of the stop members engages the tooth to hold the slider in the normal position.

Preferably, the slider body comprises a guide opening to receive the slider-guiding projection therein such that the movement of the slider is guided by the slider-guiding projection.

Other object, feature and advantages of the invention will be apparent from the following detailed descriptions of the various embodiments taken in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view showing prior art swimming goggles with an easy strap length-adjusting buckle assembly.

Fig. 2 A is an exploded perspective view of the prior art swimming goggles shown in Fig. 1.

Fig. 2B is a side view of a slider for the prior art swimming goggles of Fig. 1.

Fig. 3 is a perspective view of the swimming goggles provided with a buckle assembly according to a first embodiment of the present invention. Fig. 4 is an exploded perspective view of the swimming goggles shown in

Fig. 3.

Fig. 5 and Fig. 6 are elevated side views of a portion of the swimming goggles for illustrating the operations of the buckle assembly according to the first embodiment of the present invention. Fig. 5 shows the buckle assembly after the length of the strap has been adjusted. Fig. 6 shows the buckle assembly in the released state to allow the adjustment of the length of the strap. Fig. 7 is a cross-sectional view taken along line VI- VH in Fig. 5, depicting the slider in its normal position.

Fig. 8 is a cross-sectional view taken along line VI-VI in Fig. 6, depicting the slider in its slided-out position. Fig. 9 is a perspective view of the swimming goggles provided with a buckle assembly according to a second embodiment of the present invention.

Fig. 10 is an exploded perspective view of the swimming goggles shown in Fig. 9.

Fig. 11 and Fig. 12 are elevated side views of a portion of the present swimming goggles for illustrating the operations of the buckle assembly according to the second embodiment of the present invention. Fig. 11 shows the buckle assembly after the length of the strap has been adjusted, and Fig. 12 shows the buckle assembly in the released state to allow the adjustment of the length of the strap. Fig. 13 is a cross-sectional view taken along line XET— XQI in Fig. 11, depicting the slider in its normal position.

Fig. 14 is a cross-sectional view taken along line XIV- XIV in Fig. 12, depicting the slider in its slided-out position.

Fig. 15 is a perspective view of the swimming goggles provided with a buckle assembly according to a third embodiment of the present invention.

Fig. 16 is an exploded perspective view of the swimming goggles shown in Fig. 15.

Fig. 17 and Fig. 18 are elevated side views of a portion of the present swimming goggles for illustrating the operations of the buckle assembly according to the third embodiment of the present invention. Fig. 17 shows the buckle assembly after the length of the strap has been adjusted, and Fig. 18 shows the buckle assembly in the released state to allow the adjustment of the length of the strap.

Fig. 19 is a cross-sectional view taken along line XIX- XIX in Fig. 17, depicting the slider in its normal position.

Fig. 20 is a cross-sectional view taken along line XX - XX in Fig. 18, depicting the slider in its slided-out position.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The present invention will now be described in detail with reference to the accompanying drawings. Although the inventive buckle assembly will be described as used in swimming goggles, it should be noted that it can be used in any other devices requiring the length adjustment of a strap.

The term "horizontal " is used herein to refer to the circumferential direction of a fully assembled swimming goggles as shown in Fig. 3. The term "vertical " is used herein to refer to the direction perpendicular to the "horizontal" direction. In addition the terms "distal" and "outer" refer to an end portion of the goggle near the ear of the wearer while the terms "proximal" and "inner" refer to the other end of the goggle close to the nose. Fig. 3 and Fig. 4 are a perspective view and an exploded perspective view of swimming goggles having a first embodiment of a buckle assembly in accordance with the present invention.

Swimming goggles are comprised of a lens assembly 113 having a pair of lenses 130 and lens frames 118 holding the lens 130 therein, and a slider 117. A nose bridge 119 couples two goggles. A strap 115 holds the goggles on the wearer's head. The buckle assembly 100 is detachably attached to each end of the lens assembly 113 to connect the strap 115 to the lens assembly 113.

The lens 130 comprises a transparent plate 130c, an upper extension 130a extending from the transparent plate 130c to secure the buckle assembly to the lens assembly 113, and a lower extension 130d extending from a bottom portion of the same lens 130. A wall 130f being extended from the lower surface of the upper extension to the upper surface of the lower extension is where the slider 117 is stopped when it is in a normal position, as will be described later. A pillar 130b projects from the lower surface of the upper extension 130a to secure the lens frame 118 to the lens 130 and to guide the movement of the slider 117. A slight extension 130e is formed from the top edge of the lens 130 substantially at the proximal end so that the lens frame 118 can be pushed over it for a tight coupling.

The lens frame 118 includes a hook 118b on the proximal end for coupling with a nose bridge, a bar 118a on the distal end around which a strap 115 is wrapped. A short protrusion 118f in the form of a rectangular prism is formed at the center of the distal interior wall of the lens frame 118. As a result, either side of the short protrusion 118f defines a groove 118d along with the interior side wall of the lens frame 118. A recess 118c is made on the top surface of the short protrusion 118f. The slider 117 has a tooth 117g for engaging with stop members 115a of the strap 115. Also a pair of sliding columns 117f are formed lengthwise on the bottom surface. The bottom sides of the columns 117f each have a depression. The sliding columns 117f snuggly fit inside the grooves 118d of the lens frame 118 respectively during assembly. In the normal position of the slider 117, the top sides 117c of the sliding columns 117f contact the wall 13 Of in the lens assembly 113, as shown in Fig. 7. In a slided-out position the inner side walls 117d of the recesses contact the distal interior wall of the lens frame 118 as shown in Fig. 8. A guide space 117e between the sliding columns 117f accommodates the pillar 130b of the lens 130 so that the sliding movement of the slider 117 is restricted to the horizontal direction. A recess 117b is formed in the top side of the slider 117 in a V-shape to mate with the similarly shaped upper extension 130a of the lens 130 when the slider 117 is in the normal position. The top side 117a of the slider 117 is curved preferably in the same curvature as the upper extension 130a in the normal position. The tooth 117g formed on the bottom surface of the upper extension 130a presses down the strap 115 against the bar 118a as it is engaged with one of the stop members 115a when the slider 117 is in the normal position.

The interaction between the strap 115 and the slider 117 during a strap length-adjustment operation is disclosed in International Application No. PCT/KR99/00633. To explain briefly here, the strap 115 has a plurality of equally spaced transverse stop members or "ridges" 115a formed on its surface. When the user pulls the strap 115 in a tightening direction, i.e., horizontally, one of the stop members 115a catches the tooth 117g on the slider such that the slider 117 is dragged out along with the strap 115 until the slider 117 reaches its slide-out position and thus cannot move anymore (Fig. 8). When the user releases the strap 115, the elastic strap contacts, allowing the slider 117 to return to its normal position. The strap 115 is held fast to the slider in its normal position because its stop member 115a just outside of the slider becomes engaged again with the tooth 117g as the strap contracts. These stop members 115a have a height sufficient to get caught by the tooth 117g. The inventive buckle assembly may be used in both ends of the goggles, i.e., to the right and to the left from the perspective of the wearer.

The inventive buckle assembly 100 is assembled in the following manner. First, the strap 115 is inserted through an aperture in the distal end of the lens frame and wrapped around the bar 118a. Next, the distal end of the lens frame 115 is positioned on the lens 130 by mating the recess 118c in the short protrusion with the outer side of the pillar 130b. In this condition, the slider 117 is laid on the lens frame in such as way that the sliding columns 117f are located in the grooves 118d. That is, the slider 117 is inserted into the space between the upper extension 130a of the lens 130 and the lens frame 118. Finally, the proximal end of the lens frame 118 is pressed over the slight extension formed along the proximal end of the lens 130. With this manner of coupling, the buckle assembly 100 has two securing points where the lens frame 118 is tightly coupled on the lens 130. One is at the contact point between the recess 118c and the pillar 130b. The other is at the contact point between the slight extension 130e of the lens 130 and the lens frame 118. When combined in this way, the lens frame 118 cannot be accidentally separated from the lens assembly 113. One has to push hard the frame above the lens 130 over the slight extension 130e in order to disassemble the buckle assembly. In other words, the inventive buckle assembly is not disassembled or disengaged from the lens assembly even when the user inadvertently drops the swimming goggles on the floor or when excessive force is applied during a strap length-adjusting operation, while providing the same advantages of the above-mentioned prior art swimming goggles, i.e. simple, easy and convenient strap length-adjusting, because the inventive buckle still allows the same slider sliding mechanism. Furthermore, since the buckle body is integrated into the lens part, the number of components of the swimming goggles is reduced.

Fig. 9 and Fig. 10 are a perspective view and an exploded perspective view showing the swimming goggles having a second embodiment of a buckle assembly in accordance with the present invention.

Swimming goggles are comprised of a lens assembly 213 having a pair of lenses 230 and lens frames 218, and a slider 217. A nose bridge 219 connects two goggles, and a strap 115 holding the swimming goggles on the user's head. The lens 230 comprises a transparent plate 230c, an upper extension 230a extending from the distal end of the transparent plate 230c, a lower extension 23 Of extending from a bottom portion of the same lens. A bar 230d is formed in the lower extension as a result of an aperture made in the end of the extension. The strap 115 is to be inserted through the aperture. A wall 23 Og extends from the lower surface of the upper extension to the upper surface of the lower extension. Space between the upper and lower extensions accommodates a portion of the slider 217. A pillar 230b projects from under the distal end of the upper extension. During assembly the slider is placed under the upper extension such that this pillar goes through a long and narrow opening 217a of the slider 217. The slider 217 is laterally movable until it is stopped by the pillar 230b. As shown in Fig. 10, preferably, a slight extension 230e from the edge of the lens substantially at the proximal end is formed.

The lens frame 218 comprises a hook 218b for coupling with a node bridge and an L-shaped piece 218a on the bottom side of its distal end. The bottom half of the L-shaped piece, when assembled, supports the bottom of the pillar 230b. The distal end of the opening 217b and the proximal end 217c determine normal and slide-out positions of the slider respectively as the slider laterally moves. The slider movement is restricted to the horizontal direction by the pillar 230b inserted through the opening. A tooth 217d formed on the bottom surface of the slider 217. Its function is the same as that described in the above as used in the first embodiment.

Referring to Fig. 13 and Fig. 14, the slider 217 is in a normal position when the distal end 217b of its opening contacts the L-shaped piece 218 as shown in Fig 13. The slider 217 is in a slided-out position when its proximal end 217c contacts the pillar 230b as shown in Fig. 14. The operational relationship between the sfrap 115 and the slider 217 during the strap length-adjustment operation is the same as that of the first embodiment. The inventive buckle assembly 200 is assembled in the following manner. First, the strap 115 is inserted through the aperture in the lower extension and wrapped around the bar 23 Od. Next, the L-shaped piece 218a of the lens frame 218 is inserted into the opening 217a of the slider 217 so that the bottom half of the L-shaped piece 218a supports the bottom of the pillar 230b. Finally, the lens frame 218 is press-fitted to the lens 230 over the slight extension 230e.

The buckle assembly 200 has at least two securing points where the lens frame 218 is tightly coupled on the lens 230. One is at the contact point between the L-shaped piece 218a and the pillar 230b. The other is at the contact point between by the extension 230e and the lens frame 218. In this way, like the first embodiment as described above, the buckle assembly 200 prevents accidental disassembly due to dropping or excessive force. Furthermore, since the buckle body is integrated into the lens part, the number of components of the swimming goggles is reduced.

Fig. 15 and Fig. 16 are a perspective view and an exploded perspective view showing the swimming goggles having a third embodiment of a buckle assembly in accordance with the present invention.

Swimming goggles are comprised of a lens assembly 313 having a pair of lenses 330 and lens frames 318, a slider 317, a buckle body 314. A nose bridge 319 connects the two goggles, and a strap 115 holds the swimming goggles on the user's head.

The lens 330 comprises a transparent plate 330c, an upper extension330a extending from the distal end of the transparent plate. The upper extension protects the buckle assembly from disengagement by partially covering a distal end portion 318a of the lens frame. A lower extension 33 Of extends from a lower portion of the lens. A wall 330g extends from the lower surface of the upper extension to the upper surface of the lower extension. Space between the upper and lower extensions accommodates a portion of the slider 317. A short pillar 330b projects on the lower extension 33 Of, and a slight extension 330e is formed from the edge of the lens 330c substantially at its proximal end.

The oval-ring shaped lens frame 318 includes a hook 318b for coupling with a nose bridge. Between the distal end portion 318a of the lens frame 318 and the lower extension 33 Of, the slider 317 and the buckle body 314 are accommodated The buckle body 314 is comprised of a bar 314d, around which the strap

115 is wrapped, and a hole 314a through which the short pillar 330b on the lower extension is inserted for securing the slider body onto the lens assembly. A column 314b is formed on the upper surface of the buckle body, located between the hole 314a and the bar 314d. The column is inserted into an opening 317a of the slider 317 in order to control the slider 317 to move only horizontally. The moving distance of the slider is restricted by the lateral length of the opening 317a. A pair of spacers 314c restrict the vertical movement of the buckle body 314 by contacting the lower surface of the slider-covering portion 318a.

The long and narrow opening 317a of the slider 317 has a distal end 317b and a proximal end 317c. The slider is in a normal position when the distal end (317b) of the opening contacts the outer side of the column 314b while it is in a slided-out position when the proximal end (317c) of the aperture contacts the inner side of the projection 314b. A tooth 317d is formed on its bottom surface of the slider for pressing down the sfrap 115 against the bar 314d when the slider 317 is in its normal position.

The slider 317 can move back and forth on the above-described buckle body 314 between the normal position and the slided-out position, as shown in Fig. 19 and Fig. 20, as the user pulls the strap to adjust its length.

Fig. 19 illustrates the slider 317 in the normal position. The distal end 317b of the opening 317a contacts the outer side of the column 314b. Fig. 20 shows the slider 317 in the slided-out position. The proximal end 317c of the slider 317 contacts the opposite side of the column 314b.

The relationship between the strap 115 and the slider 317 during the strap length-adjusting operation is the same as that of the first embodiment. Therefore, it won't be described further. The buckle assembly 300 can be assembled in the following manner. First , the strap 115 is inserted through a hole in the buckle body 314 and wrapped around the bar 314d. Next, the buckle body 314 is held onto the lens 330 by insertion of the short pillar 330b into the hole 314a of the buckle body. The slider 317 is laid on the buckle body 314 with the column 314b of the buckle body 314 inserted through the opening 317a of the slider. The distal end portion 318a of the lens frame 318 is placed in the space between the upper extension 330a of the lens 330 and the slider. Finally, the lens frame 318 is press-fitted to the lens 330 over the slight extension 330e of the lens.

In this embodiment, the buckle assembly 300 also has at least two securing points where the lens frame 318 is tightly coupled on the lens 330. One is at the contact point between the upper extension 330a of the lens 330 and the distal end portion 318a of the lens frame 318. The other is at the contact point between the slight extension 330e and the lens frame 318. Like the first and second embodiments as described above, the buckle assembly 300 prevents accidental disassembly due to dropping or excessive force.

In the embodiments described above, the strap has a plurality of stop members longitudinally disposed along the strap, preferably comprised of a plurality of widthwise ridges as shown in the drawings. Alternatively, a plurality of widthwise through-holes, widthwise rectangular recesses or the like may be formed on the flexible sfrap so that a tooth can be inserted into them, thereby holding the flexible sfrap on the buckle assembly in the adjusted condition. In this case, as there are no the widthwise ridges on the flexible strap, pressure which may be exerted by the widthwise ridges on the user's head may be avoided for sensitive users. While several exemplary forms of the invention have been illustrated in the accompanying drawings and described above, other modifications will become apparent to those skilled in the art after having the benefit of this disclosure.

π

Claims

What is claimed is:

1. A buckle assembly for goggles for releasably fixing a strap having a plurality of stop members on its surface, comprising: a) a lens frame having an opening; b) a lens, installed within said opening, with an upper extension extending from the top side of said lens at a first end of said lens, a lower extension extending from a bottom portion of said lens, and means for detachably securing said lens frame onto said lens, whereby a wall of said lens between said upper extension and lower extension defines a space along with said upper and lower extensions for receiving a portion of said lens frame; c) means for supporting said strap; d) a slider, movable in said space back and forth between a normal position and a slided-out position, having a tooth for pressing down said strap against said strap-supporting means in the normal position of said slider; wherein, when said strap is pulled, one of said plurality of stop members engages said tooth to carry said slider along a direction in which said strap is pulled, and when said strap is released, another one of said stop members engages said tooth to hold said slider in said normal position.

2. A buckle assembly for goggles for releasably fixing a strap having a plurality of stop members on its surface, comprising: a) a lens frame having a strap-supporting portion around which said strap is wrapped, a frame opening, a frame-fixing piece; b) a lens, installed in said opening, having a slider-protecting portion extending from a top side of said lens, a lower extension extending from a lower portion of said lens, whereby a wall of said lens defines a space along with said slider-protecting portion and said lower extension, a frame-securing pillar projecting from either one of said slider-protecting portion and lower extension into said space to engage said frame-fixing piece of said lens frame to support said lens frame thereon and a frame-securing means formed on the periphery of said lens to secure said lens frame on said lens; and c) a slider, movable in said space of said lens back and forth between a normal position and a slided-out position, having a slider body and a tooth, said tooth pressing down said strap against said strap-supporting portion of said lens frame in the normal position of said slide; wherein, when said strap is pulled, one of said stop members engages said tooth to drag said slider along in a direction in which said sfrap is pulled, and when said strap is released, another one of said stop members engages said tooth to hold said slider in said normal position.

3. The buckle assembly of Claim 2 wherein said sliding body comprises a pair of sliding elements supported on said lens frame and extending parallel to each other to form a gap therebetween to receive said frame-securing pillar therein such that the movement of said slider is guided by said frame-securing pillar.

4. A buckle assembly for goggles for releasably fixing a strap having a plurality of stop members, comprising: a) a lens frame having a frame opening and a frame-fixing piece; b) a lens, installed within said frame opening, a having frame-protecting portion extending from an upper side end of said lens, a lower extension extending from a lower portion of said lens, a strap-supporting portion around which said sfrap is wrapped, whereby a wall of said lens between said frame-protecting portion and said lower extension defines a space along with said frame-protecting portion and said lower extension, a frame-securing pillar projecting from either one of said frame-protecting portion and said lower extension into said space to engage said frame-fixing piece of said lens frame to support said lens frame thereon, and a frame-securing means formed on the periphery of said lens to secure said lens frame on said lens; and c) a slider, movable in said space back and forth between a normal position and a slided-out position, having a slider body and a tooth, said tooth pressing down said strap against said strap-supporting portion of said lens frame in the normal position of said slider; wherein, when said sfrap is pulled, one of said stop members engages said tooth to drag said slider along a direction in which said strap is pulled, and when said strap is released, another one of said stop members engages said tooth to hold said slider in said normal position.

5. The buckle assembly of Claim 4 wherein said slider body comprises a guide opening to receive said frame-securing pillar therein such that the movement of said slider is guided by said frame-securing pillar.

A buckle assembly for goggles for releasably fixing a strap having a plurality of stop members, comprising:

a) a lens frame having a frame opening and a slider covering portion extending outwardly from said frame opening; b) a lens, received in said frame opening, having a frame-protecting portion extending from an upper side end of said lens, a lower extension extending from a lower side end of said lens, whereby a stopper wall between said frame-protecting portion and said lower extension defines a space along with said frame-protecting portion and said lower extension, a buckle body-fixing projection projecting from said lower extension into said space, and a frame-securing means formed on the periphery of said lens to secure said lens frame on said lens; c) a buckle body having a sfrap-supporting portion around which said sfrap is wrapped, a hole for receiving said buckle body-fixing projection of said lens to secure said buckle body on said lower extension, and a slider-guiding projection; and d) a slider, movable on said buckle body back and forth between a normal position and a slided-out position, having a slider body and a tooth, said tooth pressing down said strap against said strap-supporting portion of said buckle body in the normal position of said slide; wherein when said sfrap is pulled, one of said stop members engages said tooth to drag said slider outwardly, and when said strap is released, another one of said stop members engages said tooth to hold said slider in said normal position.

7. The buckle assembly of Claim 6 wherein said slider body comprises a guide opening to receive said slider-guiding projection therein such that the movement of said slider is guided by said slider-guiding projection.