Abstract:
A motherboard includes a first circuit board, a second circuit board, and a connecting member. The connecting member movably connects the first circuit board and the second circuit board, and the connecting member is capable of adjusting a relative position of the first circuit board to the second circuit board.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a motherboard, and more particularly to a motherboard for a portable computer. 
   2. Description of Related Art 
   With the development of computer technology, use of portable computers has become widespread because of their relatively small size and portability. Different size portable computers are designed to meet the needs of different users, and therefore different motherboards are required to fit for the different size portable computers. However, manufacturing so many different size motherboards is a waste of time and money. 
   What is needed, therefore, is a motherboard which is compatible with different size portable computers. 
   SUMMARY OF THE INVENTION 
   An exemplary motherboard includes a first circuit board, a second circuit board, and a connecting member. The connecting member movably connects the first circuit board and the second circuit board, and the connecting member is capable of adjusting a relative position of the first circuit board to the second circuit board. 
   Other advantages and novel features will become more apparent from the following detailed description of preferred embodiment when taken in conjunction with the accompanying drawings, in which: 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an exploded, isometric view of a motherboard in accordance with a preferred embodiment of the present invention; 
       FIG. 2  is an assembled view of  FIG. 1 , together with a base of a portable computer; 
       FIG. 3  is an assembled view of  FIG. 2 ; and 
       FIG. 4  is similar to  FIG. 3 , but showing the motherboard installed in a base of another portable computer with a different size. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring to  FIG. 1 , a motherboard  1  for a portable computer is provided in accordance with a preferred embodiment of the present invention. The motherboard  1  includes a first circuit board  10 , a second circuit board  20 , a cable  30 , and a pair of connecting members  40 . 
   The first circuit board  10  defines a pair of sliding slots  12  adjacent a first edge thereof. A positioning hole  13  is defined in the first circuit board  10  adjacent an end of each sliding slot  12 . Two spaced fixing holes  14  are defined in the first circuit board  10  adjacent a second edge opposite the first edge thereof. A socket  11  is installed in the first circuit board  10  between the sliding slots  12 . 
   The second circuit board  20  defines a pair of sliding slots  22  and a pair of positioning holes  23  adjacent an edge thereof, corresponding to the sliding slots  12  and the positioning holes  13  of the first circuit board  10  respectively. A socket  21  is installed in the second circuit board  20  between the sliding slots  22 , corresponding to the socket  11  of the first circuit board  10 . Two spaced fixing holes  24  are defined in the second circuit board  20  adjacent another edge away from the sliding slots  22 . 
   Each connecting member  40  includes a first connecting piece  41  and a second connecting piece  42 . The first connecting piece  41  and the second connecting piece  42  are bar-shaped. The first connecting piece  41  defines a through hole  411  in a middle section thereof. A first threaded hole  412  and second threaded hole  413  are defined adjacent two ends of the first connecting piece  41  respectively. The second connecting piece  42  forms a protrusion  421  in a middle section thereof, corresponding to the through hole  411  of the first connecting piece  41 . A threaded aperture  424  is defined in the protrusion  421 . A first threaded hole  422  and second threaded hole  423  are defined adjacent two ends of the second connecting piece  42  respectively. 
   Referring further to  FIG. 2 , in assembly, the protrusion  421  of each second connecting piece  42  is inserted into the through hole  411  of the corresponding first connecting piece  41 . A fixing member such as a screw  50  is screwed into the threaded aperture  424  of each protrusion  42 , with a head portion of the screw  50  engaging with the corresponding first connecting piece  41 . Thereby, each first connecting piece  41  and the corresponding second connecting piece  42  are pivotably connected by the screw  50 . Four fasteners such as screws  52  extend through the positioning holes  13 ,  23  from under the first circuit board  10  and the second circuit board  20  respectively, and are screwed into the first threaded holes  412 ,  422  of the corresponding first connecting piece  41  and the corresponding second connecting piece  42 , with head portions of the screws  52  engaging with bottoms of the first circuit board  10  and the second circuit board  20 . Thereafter, the first connecting pieces  41  and the second connecting pieces  42  are rotated to allow the second threaded holes  413 ,  423  thereof to align with the corresponding sliding slots  22 ,  12 . Four fasteners such as screws  53  extend through the sliding slots  22 ,  12  from under the first circuit board  10  and the second circuit board  20  respectively, and are screwed into the second threaded holes  413 ,  423  of the corresponding first connecting pieces  41  and the corresponding second connecting pieces  42 , with head portions of the screws  53  engaging with the bottoms of the first circuit board  10  and the second circuit board  20 . Therefore, ends of the first connecting pieces  41  and the second connecting pieces  42  adjacent the corresponding second threaded holes  413 ,  423  are slidably fixed to the second circuit board  20  and the first circuit board  10  respectively, and the first circuit board  10  and the second circuit board  20  are movably connected by the connecting members  40 . An amount of space between the first circuit board  10  and the second circuit board  20  is adjustable. Finally, two ends of the cable  30  are electrically connected to the sockets  11 ,  21  of the first circuit board  10  and the second circuit board  20  respectively. 
   The portable computer includes a base  100 , four posts  101  having threaded holes defined therein are formed on the base  100  adjacent four corners of the base  100  respectively. The amount of space between the first circuit board  10  and the second circuit board  20  is adjusted in a first direction by sliding the first and second connecting pieces  41 ,  42  of each connecting member  40  along the corresponding sliding slots  12 ,  22  in a second direction perpendicular to the first direction, until a desired size of the motherboard  1  is achieved. Four screws  201  extend through the fixing holes  14 ,  24  of the first circuit board  10  and the second circuit board  20  respectively, and then are screwed into the threaded holes of the corresponding posts  101  of the base  100 . Thereby, the motherboard  1  is fixed to the base  100  of the portable computer, as shown in  FIG. 3 . 
   Referring further to  FIG. 4 , when the motherboard  1  is required to be installed in a base  300  of another portable computer with a different size, the connecting members  40  are slid along the corresponding sliding slots  12 ,  22  of the first circuit board  10  and the second circuit board  20  to adjust the space between the first and second circuit boards  10 ,  20 , by manipulating the first and second circuit boards  10 ,  20  until a new desired size of the motherboard  1  is achieved. Thereafter, the motherboard  1  is fixed to the base  300  of the portable computer with the screws  201 . 
   It is believed that the present 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 invention or sacrificing all of its material advantages, the example hereinbefore described merely being preferred or exemplary embodiment of the invention.