Patent Publication Number: US-2011062302-A1

Title: Clasp with locking function

Description:
TECHNICAL FIELD 
     The present invention relates to portable clasp, in more detail, a clasp with a locking function of preventing loss of portable products, such as mobile phones, walkie-talkies, PDAs, and MP3 players. 
     BACKGROUND ART 
     In general, portable electronic products, such as mobile phones, walkie-talkies, PDAs, and MP3 players, can be carried by portable carrying mounts on the body, and clasps that can be fixed to the belt or pockets are attached on the rear of the carrying mounts. 
     The clasps of the related art are easily unlocked by force applied in predetermined directions, such that people with portable products in the clasps on their bodies frequently lose the portable products due to the unlocking of the clasps while using the public transportation or walking. 
     DISCLOSURE 
     Technical Problem 
     The present invention has been made in an effort to solve the problems and it is an object of the present invention to provide a clasp with a locking function which is not unlocked and prevents possibility of loss of portable products, even if force is applied in a predetermined direction. 
     Technical Solution 
     The present invention provides a clasp with a locking function, which includes: a fixing member fixed to a coupling part of a mount, and a clip pivotably coupled to the fixing member by a rotary shaft, in which the fixing member has a pair of first supports having shaft holes and spaced apart from each other at one side, the clip has a pair of second supports having elongated holes and a rotational spaces and spaced apart from each other, such that the first supports and the second supports are coupled to allow the clip to pivot about the fixing member by means of upward elasticity of a leaf spring, the rotary shaft is moved down in the elongated holes by elastic support of the leaf spring, and protrusions extending outward around the shaft holes are inserted in insertion parts formed to be open at a side of the rotational spaces, thereby preventing the clip from pivoting. 
     ADVANTAGEOUS EFFECT 
     According to a clasp with a locking function of the present invention, the protrusions  14  of the fixing member  10  are inserted and fixed in the insertion parts  35  of the clip  30 , such that the clasp is not unlocked, even if external force is applied, thereby preventing loss of portable products. 
     Further, as the upper end of the clip  30  is pressed, the leaf spring  21  is compressed and the rotary shaft  20  is moved upward in the elongated holes  33 , such that the protrusions  14  are separated from the insertion part  35  into the rotational spaces  34 , thereby making it easy to unlock the clasp. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an exploded perspective view showing a clasp with a locking function according to the present invention. 
         FIG. 2  is a cross-sectional view taken along the line II-II of  FIG. 1 . 
         FIG. 3  is a plan view showing an example of a clasp with a locking function according to the present invention. 
         FIG. 4  is a partial enlarged view and a cross-sectional view taken along the line IV-IV of  FIG. 3 . 
         FIG. 5  is a cross-sectional view and an enlarged view when the clasp of the present invention is unlocked. 
         FIG. 6  is a side view showing a first embodiment of the present invention. 
         FIG. 7  is a side view showing a second embodiment of the present invention. 
         FIG. 8  is a side view showing a third embodiment of the present invention. 
     
    
    
     REFERENCE NUMERALS 
       
     
       
         
           
               
               
               
             
               
                   
                   
               
             
            
               
                   
                 4, 5: Hook 
                 10: Fixing member 
               
               
                   
                 11: Rail 
                 12: First support 
               
               
                   
                 13, 53: Shaft hole 
                 14, 54: Protrusion 
               
               
                   
                 20: Rotary shaft 
                 21: Leaf spring 
               
               
                   
                 30, 40: Clip 
                 31, 41: Bend 
               
               
                   
                 32: Second support 
                 33, 63: Elongated hole 
               
               
                   
                 34, 64: Rotational space 
               
               
                   
                 35, 65: Insertion part 
               
               
                   
                 50: Lower clip 
                 51, 61: Contact portion 
               
               
                   
                 52: Lower support 
               
               
                   
                 60: Upper clip 
                 62: Upper support 
               
               
                   
                   
               
            
           
         
       
     
     BEST MODE 
     A clasp with a locking function according to the present invention includes: a fixing member fixed to a coupling part of a mount, and a clip pivotably coupled to the fixing member by a rotary shaft, in which the fixing member has a pair of first supports having shaft holes and spaced apart from each other at one side, the clip has a pair of second supports having elongated holes and a rotational spaces and spaced apart from each other, such that the first supports and the second supports are coupled to allow the clip to pivot about the fixing member by means of upward elasticity of a leaf spring, the rotary shaft is moved down in the elongated holes by elastic support of the leaf spring, and protrusions extending outward around the shaft holes are inserted in insertion parts formed to be open at a side of the rotational spaces, thereby preventing the clip from pivoting. 
     MODE FOR INVENTION 
     Preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. 
       FIG. 1  is an exploded perspective view showing a clasp with a locking function according to the present invention,  FIG. 2  is a cross-sectional view taken along the line II-II of  FIG. 1 ,  FIG. 3  is a plan view showing an example of a clasp with a locking function according to the present invention,  FIG. 4  is a partial enlarged view and a cross-sectional view taken along the line IV-IV of  FIG. 3 ,  FIG. 5  is a cross-sectional view and an enlarged view when the clasp of the present invention is unlocked,  FIG. 6  is a side view showing a first embodiment of the present invention,  FIG. 7  is a side view showing a second embodiment of the present invention, and  FIG. 8  is a side view showing a third embodiment of the present invention. 
     As shown in  FIG. 1 , the clasp with a locking function of the present invention can be coupled to a mount  1  such that users can carry portable products on their bodies, such as mobile phones, walkie-talkies, PDAs, and MP3 players. 
     A coupling part  2  is formed on the rear of the mount  1 , such that the clasp of the present invention is coupled thereto to be put on a belt or in pockets of cloth. The clasp is composed of a fixing member  10  fixed to the coupling part  2  and a clip  30  pivotably coupled to the fixing member  10 . 
     Rails  11  are formed at both sides of the fixing member  10  to be inserted in the coupling part  2 , a pair of first supports  12  is spaced apart on the upper surface, and shaft holes  13  where a rotary shaft  20  is inserted are formed through the first supports  12 . 
     Further, a protrusion  14  having a predetermined length is formed outward around the shaft hole  13 , that is, protrusions  14  are symmetrically formed at the two first supports  12 . 
     Meanwhile, as shown in  FIG. 7 , the rotary shaft  20  is inserted in the shaft holes  13 , a clip  30  is pivotably coupled to both ends of the rotary shaft  20 , and a bend  41  that is in close contact with the rear of the mount  1  is formed at the front end of the clip  30 . 
     Further, a pair of second supports  32  with elongated holes  33  where the rotary shaft  20  is inserted is spaced apart from each other at one side on the bottom of the clip  30  and a rotational space  32  communicating with the elongated hole  33  is formed inward on the inner surface of the second support  32 , as shown in  FIG. 2 . 
     Further, an insertion part  35  is formed at a side of the outer circumference of the rotational space  34  and a leaf spring  21  is disposed between the fixing member  10  and the clip  30  having the configuration described above to always apply elastic force upward. 
     The clasp with a locking function of the present invention having the configuration described above, as shown in  FIG. 3 , can be coupled with the mount  1  to carry a walkie-talkie  3  etc. The upper end is moved up by the leaf spring  21  and the bend  31  at the lower rend is in close contact with the mount  1  to be put on a belt of a pocket of cloth, in a normal state, as shown in  FIG. 4 . 
     Since the upper end of the clip  30  has been moved up by the elastic force of the leaf spring  21 , the rotary shaft  20  is positioned at the lower portion (at the right in the figure) in the elongated hole  33  and the protrusion  13  is correspondingly inserted in the insertion part  35  and prevents the clip  30  from pivoting. 
     Therefore, the clip  30  does not pivot and prevents the claps from separating from the body, even if external force is applied to the mount  1  with the walkie-talkie  3 . 
     On the contrary, when a user presses the upper end of the clip  30 , as shown in  FIG. 5 , in order to detach the clasp from the body, the leaf spring  21  is compressed and the rotary shaft  20  moves upward (left in the figure) in the elongated hole  33 , such that the protrusion  14  is separated from the insertion part  35  into the rotational space  34 . 
     Further, as the clip  30  pivots on the rotary shaft  20 , the protrusion  14  rotates in the rotational space  34 , and when the user takes off the hand pressing the clip  30 , the upper end is returned by the elastic force of the leaf spring and the protrusion  14  is inserted in the insertion part  35 . 
     Further, according to another embodiment of the present invention, as shown in  FIG. 6 , a hook  4  may be formed at the lower portion of the rear of the mount  1  such that the clasp can be locked by locking the bend  31  of the clip  30  to the hook  4 . 
     Further, a hook  5  may be formed in the opposite direction, in which the bend  31  is also formed in the opposite direction to be locked. 
     On the other hand, as shown in  FIG. 8 , the clasp may be composed of a lower clip  50  and an upper clip  60  having contact portions  51 ,  61  to attach/detach the body, and the basic structure and operation are the same as those in  FIG. 4 . 
     That is, the lower clip  50  has a pair of lower supports  52  having shaft holes  53  where the rotary shaft  20  inserted and protrusions  54  are formed outward around the shaft holes  53  to correspond to the fixing member  10  shown in  FIG. 10 . 
     Further, the upper clip  60  has a pair of upper supports  62  spaced apart from each other and having elongated holes  63  where the rotary shaft  20  is inserted, a rotational space  64  is formed on the inner sides of the upper supports  62  such that the protrusion  54  is rotatably inserted, and an insertion part  55  where the protrusion  54  is inserted and fixed is formed to be open at a side of the rotational space  64 . 
     In this case, the upper clip  60  is elastically combined with the upper side by a leap spring  21 , such that it corresponds to the clip  30  of  FIG. 4 . 
     Therefore, the rotary shaft  20  inserted through the shaft holes  53  and the elongated holes  63  is moved down in the elongated holes  63  by elastic support of the leaf spring  21  and the protrusion  54  is inserted in the insertion part  55 , thereby preventing the upper clip  60  from pivoting. 
     The present invention is not limited to the embodiments described above and may be modified in various ways by those skilled in the art, without being deviate from the scope of the present invention, which is described in the following claims. 
     INDUSTRIAL APPLICABILITY 
     The clasp with a locking function according to the present invention is coupled with the mount  1  to carry a walkie-talkie  3  etc, in which the upper end of the clip  30  is moved up in the leaf spring  21  and the bend  31  at the lower end is in closed contact with the mount  1  to be attached to a belt or a pocket of cloth, in a normal state, while the protrusion  14  of the locking member  10  is inserted and fixed in the insertion part  35  of the clip  30  when the clasp is locked. Therefore, the clasp is not unlocked, even if external force is applied, such that it is possible to loss of the portable produce and to expect high industrial applicability.