Abstract:
A fastening assembly includes a fastening block, a release element, and at least one elastic element. The fastening block includes a sliding groove and a stopper portion defined on the sliding groove. The release element includes a pressing portion defining a rope hole formed therein and a stopper column protruding from the pressing portion towards the stopper portion of the fastening block. The end of the stopper column is releasably locked to the stopper portion. The elastic element resists against the fastening block and the pressing portion. When the pressing portion is pressed towards the fastening block, the end of the stopper column moves and gets around of the stopper portion; when the pressing of the pressing portion is released, the elastic element releases elastic expansion to push the pressing portion away from the fastening block.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to a fastening assembly and an electronic device using the fastening assembly. 
         [0003]    2. Description of Related Art 
         [0004]    Electronic devices typically define fastening assemblies allowing external ornaments to be hung from. The fastening assembly may be formed by defining a corner hole in the housing of the electronic device. A cord connecting the ornaments can be hung through the corner hole. However, the hung ornament can be difficult to handle. 
         [0005]    Therefore, there is room for improvement within the art. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    Many aspects of the disclosure can be better understood with reference to the following figures. The components in the figures are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
           [0007]      FIG. 1  is a schematic view of one embodiment of an electronic device. 
           [0008]      FIG. 2  is an exploded view of partials of the electronic device shown in  FIG. 1 . 
           [0009]      FIG. 3  is an exploded view of one embodiment of a fastening assembly. 
           [0010]      FIG. 4  is another exploded view of the fastening assembly. 
           [0011]      FIG. 5  is an isometric view of the fastening assembly shown in  FIG. 3  being assembled in a housing of the electronic device shown in  FIG. 1 . 
           [0012]      FIG. 6  is an overhead view of the fastening assembly in a closed status. 
           [0013]      FIG. 7  is an overhead view of the fastening assembly in an open status. 
       
    
    
     DETAILED DESCRIPTION 
       [0014]      FIG. 1  shows an electronic device  100  according to an exemplary embodiment. The electronic device  100  can be a mobile-phone, a personal digital assistant, or a music player, for example. Also referring to  FIG. 2 , the electronic device  100  includes a housing  10  and a fastening assembly  20  mounted in the housing  10 . 
         [0015]    The housing  10  defines a hole  102  in an end wall  101  of the housing  10 . The housing  10  defines an inside bottom surface  103 . A mounting portion  104  is enclosed by three sidewalls vertically protruding from the inside bottom surface  103 , and adjacent to the hole  102 . 
         [0016]    The fastening assembly  20  includes a fastening block  21 , at least one elastic element  22 , and a release element  23 . In the exemplary embodiment, there are two elastic elements  22 . 
         [0017]      FIGS. 3 and 4  show the fastening block  21  has a wedge-shaped structure. The fastening block  21  defines an end wall  210 .  FIGS. 6 and 7 , show that when the fastening block  21  is mounted in the mounting portion  104 , the end wall  210  of the fastening block  21  contacts the inner surface of the mounting portion  104 . The other end of the fastening block  21  is opposite to the end wall  210  and resists against the inner surface of the housing  10 . Each elastic element  22  resists against the inner surface of the mounting portion  104  and the release element  23 . An optional protrusion (not shown) may extend inward from the end wall  210  of the fastening block  21 , and each elastic element  22  resists against the protrusion and the release element  23 . 
         [0018]    The release element  23  includes a pressing portion  230 , and two guide columns  231 , a stopper column  232 , two fastening columns  233  respectively protruding from the inner surface of the pressing portion  230 , and towards the fastening block  21 . The two guide columns  231  are located at the two opposite sides of the pressing portion  230 . The stopper column  232  is located near the center of the pressing portion  230 . Each fastening column  233  is located between each guide column  231  and stopper column  232  (see  FIG. 4 ). 
         [0019]    Each guide column  231  further defines an wedge-shaped portion  234  at the junction of the guide column  231  and the pressing portion  230 . The two wedge-shaped portions  234  may latch the inner portion of the end wall  101  against the housing  10  to prevent the release element  23  from completely popping out of the hole  102  under the elastic expansion of the elastic elements  22 . 
         [0020]    The pressing portion  230  has a shape and a size mating with the shape and size of the hole  102 , so the pressing portion  230  can pass through the hole  102  and partially latch in the housing  10 . 
         [0021]    The fastening columns  233  are shorter than the guide columns  231  and the stopper column  232 . Each fastening column  233  fastens around an end of each elastic element  22 . 
         [0022]    The fastening block  21  defines a sliding groove  212  on a surface  211  of the fastening block  21 . A flange  213  pointing towards release element  23  is defined at one end of the sliding groove  212 , and the other end of the sliding groove  212  defines an opening. A “V” shaped stopper portion  214  is defined on the sliding groove  212 , adjacent to the flange  213 . The stopper portion  214  includes two stopper arms  215 ,  216 . The stopper arms  215 ,  216  respectively define a guide surface  217  (see  FIG. 3 ). The longitudinal axis of the stopper portion  214  is angled from the stopper column  232  when the release element  23  is mounted in the mounting portion  104 . That is, the stopper column  232  will resist against the guide surface  217  of the stopper arm  215  when the release element  23  is mounted in the mounting portion  104 . The flange  213  includes a long side and a short side. The distal end of the stopper portion  214  and the distal end of the flange  213  deflect each other, and the distal end of the flange  213  is opposite to the stopper arm  215  of the stopper portion  214 . 
         [0023]    The flange  213  defines a first recessed portion having an arcuate closed end  218  and a second recessed portion having an arcuate closed end  219  at the two shoulders of the flange  213 . The arcurate closed end  219  has a larger radius than the radius of the arcuate closed end  218 . The first recessed portion having an arcuate closed end  218  is opposite to the inner end of the stopper arm  215 . The second recessed portion having an arcuate closed end  219  is opposite to the outer end of the stopper arm  216  (see  FIGS. 3 and 4 ). 
         [0024]    The surface  211  of the fastening block  21  further defines an arcuate recessed section  220 . The arcuate recessed section  220  has an arc mating with the arc of the pressing portion  230 , allowing the pressing portion  230  to be partially received in the recessed section  220 . A step is defined and connects the recessed section  220  and the sliding groove  212 . The step can restrict the movement of the pressing portion  230  to the fastening block  21 . 
         [0025]    The pressing portion  230  defines a rope hole  235  for hanging ornaments. Two arcuate notches  236  are respectively defined at the two ends of the rope hole  235  for hanging the ornaments easily. The arcuate notches  236  can decorate the pressing portion  230 . 
         [0026]    The space between the out surfaces of the two guide columns  231  matches with the width of the mounting portion  104 . When the pressing portion  230  is partially received in the recessed section  220  of the fastening block  21 , the two guide columns  231  respectively contact the surface  211  at the regions adjacent to the sliding groove  212 . While the pressing portion  230  is pressed to be completely received in the recessed section  220 , or the pressing portion  230  partially pops out of the housing  10 , the two guide columns  231  respectively slide on the surface  211  to guide the movement of the pressing portion  230 . 
         [0027]    The stopper column  232  defines a stopper pin  237  at the end of the stopper column  232 . The stopper pin  237  vertically extends downward from the main body of the stopper column  232 . The stopper column  232  and the stopper pin  237  are both made of resilient resins. 
         [0028]      FIG. 5 , shows assembly of the fastening assembly  20  to the housing  10 , the fastening block  21  is secured in the mounting portion  104  first. The two elastic elements  22  are coiled on the two fastening columns  233  of the release element  23 . Then the release element  23  is mounted to the mounting portion  104  through the hole  102 , allowing the free ends of the two elastic elements  22  to resist against the mounting portion  104 , and the stopper pin  237  of the stopper column  232  to latch in the stopper portion  214 , thereby the release element  23  is completely received in the hole  102  with the out surface of the pressing portion  230  coplanar with the out surface of the end wall  101 . The end of the pressing portion  230  adjacent to the wedge-shaped portions  234  is received in the recessed section  220 . The two guide columns  231  contact the surface  211  at the regions adjacent to the sliding groove  212 . The two elastic elements  22  are compressed. 
         [0029]      FIGS. 6 and 7 , show popping the release element  23  out of the housing  10 , the pressing portion  230  is further pressed to compress the elastic elements  22 , and the stopper pin  237  moves away from the stopper portion  214  to the flange  213 . For the distal end of the flange  213  is deflected towards the stopper pin  237 , the stopper pin  237  passes through the space between the flange  213  and the stopper arm  216  and urges to the second recessed portion having an arcuate closed end  219 , thereby the stopper pin  237  moves around the end of the stopper arm  216  and arrives at the outer side of the stopper portion  214 . When the pressing of the pressing portion  230  is released, the two elastic elements  22  are released to pop the pressing portion  230  out of the hole  102  of the housing  10 . 
         [0030]      FIG. 7 , shows the pressing portion  230  popping out of the housing  10 , the rope hole  235  being exposed, thereby users can quickly and conveniently fasten the ornaments to the fastening assembly  20  with the rope hole  235 . The two wedge-shaped portions  234  respectively latch to the end wall  101 , which prevents the pressing portion  230  completely popping out of the housing  10 . The stopper pin  237  of the stopper column  232  arrives behind to the stopper portion  214  and is opposite to the guide surface  217  of the stopper arm  215 . 
         [0031]    After the ornaments are fastened to the fastening assembly  20 , the pressing portion  230  of the release element  23  is pressed to the mounting portion  104 . The two elastic elements  22  are gradually compressed. The stopper column  232  gradually moves to the stopper portion  214  and then contacts the guide surface  217  of the stopper arm  215 . Since the stopper pin  237  and the stopper column  232  are resilient, the stopper pin  237  can further move along the guide surface  217  of the stopper arm  215  when the pressing portion  230  is further pressed and finally moves around the end of the stopper arm  215  and arrives at the first recessed portion having an arcuate closed end  218 . When the pressing to the pressing portion  230  is released, the stopper pin  237  latches in the stopper portion  214 , thereby the pressing portion  230  is completely mounted in the housing  10 . 
         [0032]    As discussed above, in the embodiment, ornaments can be conveniently and quickly fastened to the fastening assembly  20 . 
         [0033]    It is believed that the exemplary embodiment and its advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its advantages, the examples hereinbefore described merely being preferred or exemplary embodiment of the disclosure.