Abstract:
A slider having two parts is applied to electric devices, especially those with small sizes and light weights. The slider is made easily and is applied with ease too.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a sliding structure; more particularly, relates to reciprocating the sliding structure by sliding two frames on each other within a certain stroke.  
       DESCRIPTION OF THE RELATED ARTS  
       [0002]     Modern mobile phones have two styles: one with a lid and one without. For those having lids, the lids are connected with the main bodies of the mobile phones in specific ways, where those lids move within a certain area or slide within a certain distance of a stroke. The ways used for connecting the lids with the main bodies include one using a chain, another using a shaft and the other using a sliding track.  
         [0003]     Regarding the sliding track, as proclaimed in an U.S. Pat. No. 6,822,871 “Sliding-type portable wireless terminal”, a mobile phone of a prior art has a slider comprising a main body and a sub-body, reciprocating by sliding on each other within a certain stroke. The sliding track of the slider is H-bean shaped with a sliding groove for reciprocating along.  
         [0004]     For prolonging the lifetime of the sliding track, the sliding track with the sliding groove is made of metal, which increases difficulties in fabricating the sliding track. In addition, the sliding groove requires side slits, which can be made only through a process like shaving, milling or grinding. Yet, these processes are not economical to be applied to those electric products whose prices drop fast.  
         [0005]     In the other hand, there is an additional difficulty on fabricating the sliding track. The sliding track must be form through a mechanical process of bending or drawing. As long as metal is elastic, the sliding track obtained through bending or drawing quite often loses its precision even though it is applied to a delicate device. Hence, the prior arts do not fulfill users&#39; requests on actual use.  
       SUMMARY OF THE INVENTION  
       [0006]     The main purpose of the present invention is to provide an easily fabricated sliding structure for a mobile.  
         [0007]     Another purpose of the present invention is to provide a sliding structure which is applied to mobile devices of small sizes and light weights, such as mobile phones, personal digital assistants (PDA), etc.  
         [0008]     To achieve the above purposes, the present invention is a sliding structure for a mobile, comprising a frame body and a sliding member, where the frame body comprises an upper frame and a lower frame; the upper frame has a plurality of holes and at least a side sinkage; the lower frame has a plurality of protrusions being drawn from places corresponding to the holes of the upper frame respectively, and at least a side plate corresponding to the side sinkage of the upper frame respectively; at least a sliding track is formed with the side sinkage of the upper frame and the side plate of the lower frame; and the sliding member has at least a sliding plate at a side sliding along the sliding track. Accordingly, a novel sliding structure for a mobile is obtained.  
     
    
     BRIEF DESCRIPTIONS OF THE DRAWINGS  
       [0009]     The present invention will be better understood from the following detailed descriptions of the preferred embodiments according to the present invention, taken in conjunction with the accompanying drawings, in which  
         [0010]      FIG. 1  is a perspective view showing the present invention;  
         [0011]      FIG. 2  is an explosive view showing the present invention;  
         [0012]      FIG. 3A  is an A-A sectional view of the upper frame and the lower frame of the first preferred embodiment;  
         [0013]      FIG. 3B  shows the assembly of the upper frame and the lower frame;  
         [0014]      FIG. 3C  shows the firm combination by the protrusions and the holes;  
         [0015]      FIG. 4A  is an A-A sectional view of the upper frame and the lower frame of the second preferred embodiment;  
         [0016]      FIG. 4B  shows the assembly of the upper frame and the lower frame; and  
         [0017]      FIG. 4C  shows the firm combination by the protrusions and the holes. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0018]     The following descriptions of the preferred embodiments are provided to understand the features and the structures of the present invention.  
         [0019]     Please refer to  FIG. 1  and  FIG. 2 , which are a perspective view and an explosive view showing the present invention. As shown in the figures, the present invention is a sliding structure for a mobile, comprising a frame body  100  and a sliding member  200 , where the frame body  100  comprises an upper frame  110  and a lower frame  120 ; a plurality of holes  111  and at least a side sinkage  112  are formed on the upper frame  110 ; the lower frame  120  is made of a metal plate; a plurality of protrusions  121 , corresponding to the holes  111  of the upper frame  110 , are formed on the lower frame  120  through a drawing process; the protrusions  121  have shapes and sizes being fitted with the holes  111  respectively; the lower frame  120  has at least a side plate  122  corresponding to the side sinkage  112  respectively; at least a sliding track  114  (shown in  FIG. 3B ) are formed by the side sinkage  112  and the side plate  122 ; the sliding member  200  has at least a sliding plate  210  corresponding to the sliding track  114 ; and so the sliding member  200  is slid along the sliding track  114  with the sliding plate  210 .  
         [0020]     Please refer to  FIG. 3A  till  FIG. 3C , which are an A-A sectional view of the upper frame and the lower frame of the first preferred embodiment; and views showing the assembly of the upper frame and the lower frame and showing the firm combination by the protrusions and the holes. As shown in the figures, the present invention is a sliding structure applied in a mobile phone. Therein, an upper frame  110  and a lower frame  120  of the sliding structure do not need a strong binding force in between before the sliding structure is fixed in the mobile phone. When assembling the present invention, protrusions  121  of the lower frame and holes  111  of the upper frame  110  are aimed at each other to be fixed together a long with the upper frame  110  and the lower frame  120 . At the moment, a simple mechanical process, such as punching the protrusions  121  with tools  400 , is applied to deform the protrusions  121  so that the upper frame  110  and the lower frame  120  is kept firmly being fixed together.  
         [0021]     A first sliding track is formed with a first side sinkage  112  of the upper plate  110  and a side plate  122  of the lower plate  120 . Since the upper frame  110  and the lower frame  120  are fabricated separately, the first side sinkage  112  is precisely fabricated on the upper frame  110 . For obtaining the first sliding track  114  with a deeper sinkage, the sinking part of the first side sinkage  112  can be enlarged on a fabrication, which is to be fixed with the side plate  122  of the lower frame  120  enlarged as well.  
         [0022]     The upper frame  110  and the lower frame  120  are stuck together by aiming the holes  111  and the protrusions  121  at each other respectively. Or, the upper frame  110  and the lower frame  120  can be stuck together through welding, riveting or tightly adhering. The hole  111  is a coned hole of expanding surfaces. The protrusion  121  can be deformed with a tool to obtain another form of a protrusion  121   a  with a screw thread to be fixed with a screw The above two ways of fixing can be used at the same time. That is, some holes  111  are simply inserted with some protrusions  121  respectively; yet some other holes  111   a  and some other protrusions  121   a  (shown in  FIG. 1 ) are fixed through using some screws respectively.  
         [0023]     When fixing by using screws, proper screws are used to fix the upper frame  110  and the lower frame  120  so that a frame body  100  (shown in  FIG. 1 ) is fixed on the mobile phone (not shown in the figures). At the moment, the screws are fixed in to the mobile phone and the upper frame  110  and the lower frame  120  are pressed by the screw nuts to fix the frame body  100  on the mobile phone (not shown in the figures). To avoid ruining the protrusions  121 , the protrusions  121  here have no screw thread.  
         [0024]     In the other hand, please further refer to  FIG. 2 , the upper frame  100  has an opening  116  having no intersection with the first sliding track  114 . A pair of second sliding tracks  115  is formed by two second side sinkages  113  at two non-intersecting sides of the opening  116 , and two side plate  123  corresponding to the second side sinkages  113  at two sides of the lower frame  120 . When the protrusions  121  are punched by the tools  400 , the protrusions  121  are deformed in the holes of the upper frame  110 , obtaining a pair of second sliding tracks  115  at two sides of the opening  116 .  
         [0025]     The pair of the second sliding tracks  115  has a narrowing section  117  and, a driven member  300  with elasticity is slid on the second sliding tracks  115 . The driven member  300  is slid along the second sliding tracks  115  in a direction exactly the same as that for the sliding member  200  along the first sliding track  114 . The driven member  300  is fixed on the sliding member  200 . When the sliding member  200  is slid on the first sliding track  114 , the driven member  300  is slid on the second sliding tracks  115  at the same time. By using the driven member  300 , the second sliding tracks  115  and the narrowing section  117 , the present invention can semi-automatically slides the sliding member  200 . The sliding member  200  needs only to be pushed through the narrowing section  117 ; then the elasticity of the driven member  300  is used to finish the rest of the stroke.  
         [0026]     The protrusions  121  of the lower frame  120  are obtained by protruding metal material out of the surface of the lower frame  120  through a drawing process. The protrusions  121  have round mouths on top respectively; thus, when tools  400  are punched on the protrusions  121 , the protrusions  121  are deformed in the holes of the upper frame  110  and so the upper frame  110  and the lower frame  120  are fixed at related positions in between.  
         [0027]     Please refer to  FIG. 4A  till  FIG. 4C  which are an A-A sectional view of the upper frame and the lower frame of the second preferred embodiment; and views showing the assembly of the upper frame and the lower frame and the firm combination by the protrusions and the holes. As shown in the figures, the holes  111  of the upper frame  110  are shoulder holes which functions just the same as coned holes do. And the protrusions  121  can be made having no mouth. When tools  400  are punched on the protrusions  121 , the protrusions  121  are deformed in the holes  111  of the upper frame  110  and so are hard to be removed.  
         [0028]     To sum up, the present invention has the following advantages:  
         [0029]     1. A sliding structure for a mobile can be easily fabricated according to the present invention.  
         [0030]     2. Such a sliding structure can be applied to electric devices having small sizes and light weights, such as mobile phones, personal digital assistants (PDA), etc.  
         [0031]     The preferred embodiments herein disclosed are not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.