Abstract:
An electronic device includes a housing, a speaker, a securing board, and at least one guiding board. The securing board defines an opening to allow the speaker to be exposed outside the securing board. The securing board includes a first side and a second side opposite to the first side. During assembly the securing board to the housing, the guiding board enables the first side to be supported by the guiding board, and the second side rotates towards the speaker around the first side.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to fastening structures, particularly to an electronic device and fastening structures for fastening a speaker. 
         [0003]    2. Description of Related Art 
         [0004]    Most speakers are located inside of the housing of an electronic device. The speaker is secured to the housing by a fastening structure. The typical fastening structure includes a guiding post and a metal cover. The guiding post perpendicularly protrudes from the housing, and the guiding post is adjacent to the speaker. The cover defines a guiding hole corresponding to the guiding post, and an opening. The opening is aligned with the speaker to disable the magnet to attract the metal after the guiding post is passed through the guiding hole. Then the cover covers and is secured to the housing via a screw. Because the metal cover is near to the magnet in the speaker, this degrades the effectiveness of the speaker. The guiding post needs to be long enough to enable the opening to be aligned with the speaker when the cover is away from the speaker. However, making the guiding posts longer affect the microminiaturization of the electronic device. 
         [0005]    Therefore, there is room for improvement within the art. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
           [0007]      FIG. 1  is an isometric view of an electronic device having a fastening board. 
           [0008]      FIG. 2  is an exploded view of the electronic device in  FIG. 1 . 
           [0009]      FIG. 3  is an isometric view of the fastening board in  FIG. 1 , viewed from another aspect. 
       
    
    
     DETAILED DESCRIPTION 
       [0010]    Referring to  FIGS. 1 and 2 , an electronic device  100  in accordance with an embodiment is shown. The electronic device  100  includes a fastening structure  600  for securing a speaker  60  inside of the electronic device  100 . A speaker cable  62  extends from the speaker  60 . 
         [0011]    The fastening structure  600  includes a housing  10 , a securing board  20 , a receiving part  30 , two guiding bar  40 , a plurality of first fastening parts  50   a , a second fastening part  50   b , and a plurality of screws  80 . The speaker  60  is received in the receiving part  30 . The securing board  20  covers the receiving part  30  to secure to the speaker  60 . The two guiding bars  40  guide the securing board  20  to secure to the speaker  60 . The plurality of screws  80  pass through the securing board  20  and are fastened to the first fastening part  50   a . The second fastening  50   b  passes through the securing board  20 . 
         [0012]    The receiving part  30  is adjacent to one side of the housing  10 . The receiving part  30  includes a first sidewall  31 , a second sidewall  33 , a third side wall  32 , and a fourth sidewall  34 . The first sidewall  31  is parallel to the second sidewall  33 . The third sidewall  33  is parallel to the fourth sidewall  34 . The first, the second, the third, and the fourth sidewalls  31 ,  33 ,  32 , and  34  are connected end-to-end to form a receiving space to receive the speaker  60 . The first sidewall  31  is adjacent to one side of the housing  10 . From one end of the third sidewall  32  away from the housing  10  projects a supporting board  70 . One end of the supporting board  70  away from the housing  10  defines a first gap  71 . The first gap  71  allows the speaker cable  62  to pass through the supporting board  70 . 
         [0013]    The number of the first fastening parts  50   a  is three. Two of the first fastening parts  50   a  are located outside of the third sidewall, and adjacent to opposite ends of the third sidewall  32 . The other one of the first fastening part  50   a  is adjacent to the fourth sidewall  34 , and corresponds to the middle of the fourth sidewall  34 . Each fastening part  50   a  defines a first fixing hole  501 . The second fastening part  50   b  is adjacent to the fourth sidewall  34  and located at one end of the fourth sidewall  34  away from the first sidewall  31 . 
         [0014]    The guiding boards  41  are rectangular bars perpendicularly protruding from the housing  10 . The guiding boards  40  are located outside of the receiving part  30  at intervals and connected to the first sidewall  31 . The height of the guiding board  40  is higher than the height of the receiving part  30  taken along a direction perpendicular to the housing  10 . When the speaker  60  is received in the receiving part  30 , the end of the guiding board  40  away from the housing  10  is coplanar with the end of the speaker  60  away from the housing  10 . 
         [0015]    The securing board  20  includes a base  21 , an opening  23  defined in the base  21 , a blocking board  24 , a pressing arm  25 , two first mounting part  22   a , and a second mounting part  22   b . The base  21  is rectangular, the base  21  includes a first side  211 , a second side  212 , and a third side  214 . The first side  211  is opposite to the second side  212 . The third side  212  is connected between the first side  211  and the second side  214 . The first, the second, and the third sides  211 ,  212 , and  214  cooperatively form the opening  23 . 
         [0016]    The blocking board  24  is a rib perpendicularly extending downward from the first side  211 . The pressing arm  25  spans between the first side  211  and the second side  213 , and the pressing arm  25  is opposite to the third side  214 . The pressing arm  25  includes a connecting part  251 , and a pressing part  252 . The connecting part  251  arches from the base  251  and is connected between the first side  211  and the second side  213 . The pressing part  252  horizontally extends from the connecting part  251  and is away from the third side  214 . 
         [0017]    The first mounting parts  22   a  are positioned at two opposite sides of the pressing part  252 . The first mounting parts  22   a  extend downwardly and horizontally from the base  21 . Each first mounting part  22   a  defines a second fixing hole  220   a.    
         [0018]    The second mounting part  22   b  extends downwardly and horizontally from the third side  214 . The second mounting part  22   b  defines a second gap  222 . The gap  222  is away from the first side  221 . The second mounting part  22   b  defines a third fixing hole  220   b.    
         [0019]    Referring to  FIG. 1  again, the assembly of the electronic device  100  is described as below. First, the speaker  60  is placed into the receiving part  30 , and the speaker  60  contact the second sidewall  33 , the third sidewall  32 , and the fourth sidewall  34 ; there is a space between the first sidewall  31  and the speaker  60 ; the speaker cable  62  passes through the supporting board  70  via the first gap  71 . Second, the first side  211  of the securing board  20  faces the speaker  60 , the second side  213  is away from the speaker  60 . Third, the securing board  20  is moved to the speaker  60  to enable the blocking board  24  to be positioned between the first side  211  and the guiding boards  40 , and blocked by the guiding boards  40 . Fourth, the second side  213  is rotated around the first side  211  to contact the speaker  60 . At this time, the speaker  60  is exposed outside of the securing board  20  via the opening  23 . The first fixing holes  501  of two of the first fastening parts  50  are concentric with the second fixing hole  220   a  of the first mounting part  22   a . The first fixing hole  501  of the other one of the fastening parts  50  is concentric with third fixing hole  220   b  of the second mounting part  22   b . The second fastening part  50   b  passes through the second gap  222 , the pressing arm  25  presses on the supporting board  70 . Fifth, the screws  80  respectively pass through the first fixing holes  220   a  and the second fixing hole  220   b  to screw in the first fixing holes  501  of the first fastening parts  50   a . As a result, the securing board  20  tightly presses on the speaker  60 , the pressing arm  25  tightly presses on the supporting board  70  to cover the speaker cable  62 . 
         [0020]    The electronic device  100  and the fastening structure  600  for fastening the speaker  60  as described above includes the guiding boards  40 . One side of the securing board  20  is blocked by the guiding boards  40 , the other side of the securing board  20  is away from the speaker  60 , and the other side of the securing board  20  is rotated around the side of securing board  20  blocked by the guiding boards  40  during assembly of the securing board  20  to the housing  10 . Therefore, the magnetism of the speaker  60  is reduced during the securing board  20  assembly to the housing  10 , and the guiding board  40  need not be long to enable the securing board  20  to be away from the speaker  60 . Therefore, the guiding boards  40  do not affect the microminiaturization of the electronic device  100 . 
         [0021]    Even though relevant information and the advantages of the present embodiments have been set forth in the foregoing description, together with details of the functions of the present embodiments, the disclosure is illustrative only; and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the present embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.