Abstract:
A structure of a magnetic belt buckle is disclosed. The magnetic belt buckle comprises a top cover, magnets, a pulling ring, an iron block and a bottom housing and at least one moving-type magnet, characterized in that the top cover, the bottom housing and one end of the belt are mounted with magnets of same poles to facilitate and rapid adjustment of belt by means of repelling force between the magnets so as to attain the optimum fastening, and by means of the moving-type magnets to mutually repel with each other, and to attract with the iron block, the tightening of belt is maintained.

Description:
BACKGROUND OF THE INVENTION 
     (a) Technical Field of the Invention 
     The present invention relates to buckle of a belt, and in particular, to a magnetic belt buckle which facilitates adjustment of tightness of belt after buckling to the waist of the wearer. 
     (b) Description of the Prior Art 
     Conventional belt is provided with a belt head (buckle) at one end of the belt, which is fastened to the other end of the belt. The end portion of the belt is provided with a plurality of holes, which is fastened to the buckle so as to provide a fastening to the waist of the wearer. To adjust the tightness of the belt, different holes have to be used for fastening to the buckle. However, adjustment of tightness from one hole to another hole does not provide a slight adjustment. Therefore, it is an object of the present invention to provide a structure of a magnetic belt buckle, which mitigates the above-drawback by allowing a slight adjustment of the belt buckle. 
     SUMMARY OF THE INVENTION 
     Accordingly, it is an object of the present invention to provide a structure of a magnetic belt buckle comprising a top cover, magnets, a pulling ring, an iron block and a bottom housing and at least one moving-type magnet, characterized in that the top cover, the bottom housing and one end of the belt are mounted with magnets of same poles to facilitate and rapid adjustment of belt by means of repelling force between the magnets so as to attain the optimum fastening, and by means of the moving-type magnets to mutually repel with each other, and to attract with the iron block, the tightening of belt is maintained. 
     Yet another object of the present invention is to provide a structure of a magnetic belt buckle wherein the belt is of an appropriate length and is mounted with at least one moving-type magnet, thereby repelling force is increased between magnets of same poles. 
     A further object of the present invention is to provide a structure of a magnetic belt buckle, wherein the loosening and tightening of the belt can be slightly adjusted to provide the most appropriate tightness of belting to the waist of the user. 
     The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. 
     Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example. dr 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is an exploded perspective view of an externally-mounted type magnetic belt buckle of the present invention. 
     FIG. 2 schematically shows the top cover of a magnetic belt buckle of the present invention. 
     FIG. 3 schematically shows the bottom housing of a magnetic belt buckle of the present invention. 
     FIGS. 4 and 5 schematically show the operation of the magnetic belt buckle of the present invention. 
     FIG. 6 is another preferred embodiment of the magnetic belt buckle of the present invention. 
     FIG. 7 is a preferred embodiment of an internal mounting buckle in accordance with the present invention. 
     FIGS. 8 and 9 schematically show the operation of an internal-mounting buckle in accordance with the present invention. 
     FIG. 10 is another schematic view of the internal-mounting buckle in accordance with the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following descriptions are of exemplary embodiments only, and are intended to limit the scope, applicability or configuration of the invention any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims. Referring to FIGS. 1 to  3 , there is shown a structure of an externally-mounted magnetic belt buckle. As shown in the figure, the belt buckle comprises a top cover  10 , a bottom housing  20 , and a pulling ring  30 , and magnets  40 , 50 . The top cover  10  is substantially an “arch” shaped body. Two sides of the cover l are provided respectively with a recess for the mounting of magnet  50  which is mounted to the cover  10  by a recessed fastening seat  26 . The surface of the magnet  50  and the bottom section of the fastening seat  26  are provided with two top blocks  51  and the center of the top cover is provided with a through hole. By means of a rear rod protrusion  33  of the pulling ring  30 , the magnet  50  is located at the slot of the fastening seat  26  so that the magnet  50  slides within the top cover  10  and the bottom housing  20 . The rear of the top cover  10  is mounted to a fastening ring  12 , and a circular hole  13  is located at the sides, at the rear end of the top cover  10 . The front side of the top cover  10  is provided with two screwed protrusions  11  for mounting together with the screw nuts  62  at the bottom housing  20 . The screwed protrusions  11  are used to urge against another magnet  40 , and one or more than one moving type magnet  41  is provided within the front side of the magnet  40  and the magnet fastened to the pulling ring  30 . The additional magnet  40  provides appropriate repelling force so that the front end of the belt can be adjusted slightly. As a result of the arrangement of the iron block  70 , the original tightness of the belt can be restored. 
     The bottom housing  20  is mounted to the top cover  10  at the upper edge thereof. The two sides of the bottom housing  20  are provided with two blocking plates  21  adaptable to the recess of the top cover  10  so that the magnet  50  can slide therein. There are through holes  22  at the rear side of the bottom housing  20  and the center thereof is provided with a stopping block  25  for urging at and positioning the end of the belt. A stop  23  is positioned at the recess of the stopping block  25  for mounting with the iron block  70 . The screwed protrusions  11  for mounting with the top cover  10  are provided to the stop  23  so that the magnet  40  can be mounted at the cover  10  leaving only one contact face to provide a stable and strong magnetic surface. 
     Referring to FIGS. 4 and 5, the magnets  40  and  50  are of similar poles and will repel with each other. The top cover  10  and the bottom housing  20  are fastened to each other, and a top needle  32  is mounted to the through hole of the belt  60 . If a slight adjustment of tightness of the belt  60  is required, the two magnets  40 ,  50  (being having the same poles) will repel with each other and the iron block  70  at the front edge of the stopping block  25  will restore the belt  60  to the appropriate tightness. 
     As shown in FIG. 6, the top cover  10  is provided with a guiding slot  14  and the interior of the cover  10  of the rear magnet  50  has a protrusion  53 , and the top and bottom side of the top cover  10  are provided with a top block  51  mounted with steel beads or rail slot  54  so that the magnet  40  slides within the cover  10 . 
     There are steps at the front and rear end of the bottom housing  20  for the adaptation of magnet, and the rear end has an arch-shaped iron block  43  to provide a repel force so that the belt  60  can restores to its tightness, As a result of the moving-type magnet  41 , the repelling force increases so that the pulling out of the belt  60  is easy and is stable. One or more than one moving-type magnets  41  can be incorporated to the belt buckle. 
     Referring to FIGS. 7 to  9 , there is shown an internally-fastened type belt buckle in accordance with the present invention. On the top cover  10 , two screwed protrusions  11  are provided to the front end of the cover  10 , and the rear end of the top cover  10  is a fastening ring  12 . There are circular holes  13  at the two sides of the top cover  10  for the passage of the rod protrusion  61  of the bottom housing  20  so as to connect with the bottom housing  20 . The bottom housing  20  is also provided with two through holes  22 , and a stop  23  is located in between the two holes  22 . 
     The rear end of the bottom housing  20  is also provided with a stop  23  for the mounting of an arch-shaped iron block  43  to increase repelling force of the magnet. The top cover  10  and the bottom housing  20  enclose an iron block  70 . The sides of the bottom housing  20  are provided with steel beads or rail slot  54 , allowing point contact with other magnets and facilitating slide operation between the top cover  10  and the bottom housing  20 . 
     FIG. 10 is another preferred embodiment of the present invention. The top cover  10  is made into a recessed structure with two lateral sliding rails  17  being formed from at the inner wall of the recessed structure for longer mounting of belt. One or more than one moving-type magnets  41  is located at the guiding slot or the sliding rails  17 . The magnet  41  is mounted to a shaft rod  42 , and the front and the rear end of the top housing  10  are provided with a stop  23  so that an iron block  70  can be mounted at the front end, and a magnet  50  is mounted at the rear end of the top cover  10 . Another magnet  40  is provided at the front end of the fastening ring seat  15 . 
     By means of the fastening plate  16 , the end of the belt  60  can be mounted by pressing the plate  16  inward. Due to the sliding of the fastening ring seat  15  within the guiding slot  17  and the repelling force of the magnets  41 ,  50  having similar poles, the belt  60  can be adjusted slightly. 
     It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above. 
     While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.