Abstract:
This invention relates to a device for fixing a strap of goggles or a diving mask or the like. The device includes a generally flat strap-securing fitting having a crossbar and fulcruming means extending therefrom.

Description:
BACKGROUND OF THE INVENTION 
     Conventional goggles employ as belt fixing means a buckle. A belt led out from the buckle is inserted into the hole of the body of the goggles, folded, passed at the end through the buckle and fixed while adjusting the length of the belt. 
     In this structure, the belt can be tightly engaged, but it is complicated to adjust the length of the belt, and is particularly inconvenient by a child to handle the goggles. 
     It has recently been considered to perforate two holes at the body of the goggles without using a buckle, to pass a belt through the holes and to merely fix the belt by means of the frictional force produced between the holes. However, it is also difficult to adjust the length of the belt in this structure. In addition, it is also difficult to adjust the length of the belt in this structure. Further, the belt feasibly slides by strong tension, and it is inconvenient to move the belt due to the tight engagement of the belt. 
     SUMMARY OF THE INVENTION 
     This invention has for its object to provide a device for fixing a belt of goggles which can eliminate the aforementioned disadvantages of the conventional goggles and rapidly and readily adjust the belt. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view showing an embodiment of a device for fixing a belt of goggles according to the present invention; 
     FIG. 2 is a front view of the device; 
     FIG. 3 is a sectional view taken along line III--III in FIG. 2; and 
     FIG. 4 is a sectional view similar to FIG. 3 for explaining the operation of the device. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The embodiment of the present invention will now be described in more detail with reference to the accompanying drawings. In this embodiment, shown in FIGS. 1 to 4, a slit 3 of the width, through which a laminated rubber belt 2 can be inserted by means of suitable friction, is formed at each of both right and left ends of a body 1 of goggles, and the belt 2 inserted into the slit 3 is fixed by a fitting 4. The fitting 4 has a rod portion 4a including substantially flat D shape for engaging the belt 2, a frame portion 4b including substantially C shape to form a window hole 4b continued to the vicinity of both ends of the rod portion 4a, and protruding ends 4c, 4d formed at the ends of the frame portion 4b. In this manner, the belt 2 is engaged in U shape with the rod portion 4a of the fitting 4, then inserted at the end into the slit 3 from the front surface of the body 1, and when the belt 2 is then pulled backwardly, the fitting 4 can be pressed to the body 1. It is noted that the fitting 4 of this embodiment is formed entirely in substantially D shape. However, the fitting 4 may be formed with ends 4c and 4d extended to form a closed loop similar to portion 4b. It is accordingly essential that the fitting 4 should have the rod portion 4a at the intermediate, the frame portion 4b&#39; and the upper and lower ends 4c, 4d. It is noted that either one of the rod portion 4a and the frame portion 4b&#39; may be divided in the course. In the drawings, reference numeral 5 designates a joint, 6 designates a band anchoring rod, and 7 designates a face contacting buffer frame of sponge. 
     In FIG. 2, a chain line shows the inserted fitting 4. 
     As set forth, according to this invention, when the frame portion 4b&#39; of the fitting 4 is engaged by a finger and the fitting 4 is erected with the protruding ends 4c, 4d of the fitting 4 as fulcra, the belt 2 can be immediately loosened, and when the belt 2 is thereafter pulled, the length of the belt can be freely adjusted. Thus, the belt can be tightly engaged, and is not loosened during use.