Abstract:
A dynamic sliding module is described. The dynamic sliding module includes a track, a dynamic slide, and a guiding device. The track includes a first opening and the guiding device is disposed adjacent to the first opening. When the dynamic slide slides along the track and aligns with the first opening, the guiding device provides a guiding force to guide the dynamic slide to move toward the first opening and enter into the track for sliding thereon. The track further includes a second opening to allow the dynamic slide to be withdrawn form the track. The dynamic sliding module further includes an elastic device and/or a wedge-shaped device disposed adjacent to the second opening to assist the dynamic slide to be withdrawn from the track.

Description:
RELATED APPLICATIONS 
   The present application is based on, and claims priority from, Taiwan Application Serial Number 94147789, filed Dec. 30, 2005, the disclosure of which is hereby incorporated by reference herein in its entirety. 
   FIELD OF THE INVENTION 
   The present invention generally relates to a dynamic sliding module for an electronic device. More particularly, this invention relates to a magnetically dynamic sliding module for an electronic device. 
   BACKGROUND OF THE INVENTION 
   Since wireless communication technology is highly developed, mobile phones are becoming increasingly light and easy to hold. Nowadays, most people use mobile phones to communicate with others. Therefore, the mobile phone has become a necessary electronic device in people&#39;s lives 
   Due to the popularity of mobile phones, mobile phone manufacturers are working extremely hard to increase mobile phone functions in order to satisfy various requirements desired by users. For example, some of the mobile phones provide PDA functions, such as address book, calendar, minutes and/or agendas. Some mobile phones provide electronic games therein for the users to play during their idle time. Further, some mobile phones have digital cameras thereon so that users can take beautiful pictures to share with their friends. 
   However, a current mobile phone generally has a size smaller than that of a palm, and especially, a smaller mobile phone only has a size almost similar to that of an egg. Therefore, the surface area for the keyboard and display on a mobile phone is limited. Integrating all the foregoing functions into such a small mobile phone is difficult. To increase the available surface area, some mobile phones are designed to dispose the keyboard and the display respectively on two electronic modules, which are connected to each other via a sliding mechanism, so as to construct, for example, a slide cell phone including a sliding keyboard and a sliding display. 
   In order to increase the sliding stability between the sliding keyboard and the sliding display, the sliding mechanism has to occupy a predetermined length of a sliding track and thus limits the sliding length of the sliding track such that the slide-out area on the sliding keyboard is reduced. Accordingly, there is a need to reduce the waste length of the sliding track occupied by the sliding mechanism so as to increase the usable slide-out area on a slide cell phone. 
   SUMMARY OF THE INVENTION 
   It is an objective of the present invention to provide a dynamic sliding module to increase the surface area of an electronic device. 
   It is another objective of the present invention to provide a dynamic sliding module using an attracting force, such as a magnetic force, to engage a dynamic slide with a track in a part of the stroke thereof to increase the sliding stability for two electronic sliding modules of an electronic device. 
   It is yet another objective of the present invention to provide a dynamic sliding module with a dynamic slide escaping from a track in a part of the stroke thereof to increase the surface area and the stroke of two electronic sliding modules of an electronic device. 
   To accomplish the above objectives, the present invention provides a dynamic sliding module for coupling a first electronic module to a second electronic module of an electronic device, and increasing both the sliding reliability and the area of exposable surfaces therebetween. The electronic device is, for example, a mobile phone, such as a slider cell phone. The first electronic module is, for example, a sliding display, and the second electronic module is, for example, a sliding keyboard. The dynamic sliding module includes a track with a first opening, a dynamic slide, and a guiding device, such as an attracting device, to guide the dynamic slide into the track through the first opening while the dynamic slide is moved to be aligned with the first opening so as to enable the dynamic slide to engage with and slide on the track. 
   The track further includes a second opening for withdrawing the dynamic slide from the track. The dynamic sliding module further includes an elastic device coupled to the dynamic slide to withdraw the dynamic slide from the track through the second opening and back to the second electronic module. The dynamic sliding module further includes a wedge-shaped block being disposed adjacent to the second opening and having an incline to push the dynamic slide out of the track from the second opening. 
   The guiding device is preferably an attracting device. In one preferred embodiment, the dynamic slide is made of a magnetic material and the attracting device is made of a ferromagnetic material. In another preferred embodiment, the dynamic slide is made of a ferromagnetic material and the attracting device is made of a magnetic material. In a further another preferred embodiment, the dynamic slide and the magnetic device are made of a magnetic material and adjacent surfaces thereof have different polarities. 
   The dynamic sliding module can further include a magnetic device disposed above the second opening, and the dynamic slide and the magnetic device are made of a magnetic material and the adjacent surfaces thereof have the same polarity. 
   The dynamic sliding module can further utilize a first slide attached on the track to couple the first electronic module to the second electronic module. The diameter of the first slide is preferably larger than the diameter of the dynamic slide. More preferably, the diameter of the first slide is larger than the diameter of the first opening and/or the second opening so that the first slide can slide on the track and be prevented from escaping the track. The first slide is preferably lower than the wedge-shaped block to prevent the first slide from touching the wedge-shaped block while the dynamic slide is pushed out of the track to further increase the area of the exposable surface between the first electronic module and the second electronic module. Alternatively, the wedge-shaped block is designed to be a stopping block for stopping the first slide. 
   Accordingly, the dynamic sliding module according to the present invention can increase the sliding reliability of the sliding electronic modules for the electronic device, and increase the area of the exposable surfaces for the electronic device to control the electronic device and/or increase the functionality thereof. In addition, since the dynamic slide only engages with the track in a part route of the track, the dynamic sliding module can increase the variations of the electronic device, especially for the mobile phone. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein: 
       FIG. 1  illustrates a dynamic sliding module according to the present invention; 
       FIGS. 2A to 2C  illustrate operating status of a first preferred embodiment of an electronic device with the dynamic sliding module according to the present invention; and 
       FIG. 3  illustrates a second preferred embodiment of an electronic device with the dynamic sliding module according to the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   The following description is currently the best implementation of the present invention. This description is not to be taken in a limiting sense but is made merely to describe the general principles of the invention. The scope of the invention should be determined by referencing the appended claims. 
     FIG. 1  illustrates a dynamic sliding module according to the present invention. An electronic device includes a first electronic module  110 , a second electronic module  120 , and a dynamic sliding module  160 . The first electronic module  110  and the second electronic module  120  are slidable relative to each other so as to expose inner surfaces of the first electronic module  110  and the second electronic module  120 . 
   The dynamic sliding module  160  includes a guiding device, such as an attracting device  162  shown in  FIG. 1 , a dynamic slide  164 , and sliding tracks (referring to  FIGS. 2A to 2C ). While the dynamic slide  164  disposed on the second electronic module  120  is aligned with the attracting device  162 , the dynamic slide  164  is able to be attracted into the track through the opening  168  of the track so as to increase the sliding stability between the first electronic module  110  and the second electronic module  120 . The dynamic sliding module  160  further includes an elastic device  166  to assist the dynamic slide  164  in returning to the second electronic module  120 . The electronic device is preferably a slide cell phone with the first electronic module  110 , such as a sliding display, and the second electronic module  120 , such as a sliding keyboard. The guiding device is not limited to the attracting device  162 . Any force able to guide the dynamic slide  164  into the track can be used in the dynamic sliding module according to the present invention. 
     FIGS. 2A to 2C  illustrate the operating status of an electronic device using the dynamic sliding module according to a first preferred embodiment of the present invention. For clear illustration, a part of the first electronic module is removed to show a first shell  112 , and a first slide  210 , a second slide  220 , a first track  230 , a second track  222  and a dynamic slide  164  disposed therein. 
   The first slide  210  and the second slide  220  are respectively coupled to the first track  230  and the second track  222  and able to slide thereon. While the first shell  112  and the second electronic module  120  slide relative to each other, the first shell  112  can slide along the first track  230  and the second track  222  with the first slide  210  and the second slide  220  sliding in the first track  230  and the second track  222  respectively. 
   However, if the first slide  210  and the second slide  220  are too small, the sliding stability between the first shell  112  and the second electronic module  120  may be reduced. On the contrary, if the first slide  210  and the second slide  220  are too large, the sliding stroke of the first shell  112  and the second electronic module  120  may therefore be shortened so that the slide-out area, e.g. the area of the surface  240 , on the second electronic module  120  is reduced. 
   The first track  230  has an opening  168  and another opening  232  such that when the dynamic slide  164  is aligned with the opening  168 , the dynamic slide  164  can be attracted into the first track  230  through the opening  168  by an attractive force, e.g. a magnetic force, between the attracting device  162  and the dynamic slide  164  and thus be able to slide on the first track  230 . When the first shell  112  and the second electronic module  120  are slid relative to each other, the first slide  210 , the second slide  220  and the dynamic slide  164  slide coplanarly along the first track  230  and the second track  222  respectively thereby increasing the sliding stability between the first shell  112  and the second electronic module  120 . 
   When the dynamic slide  164  moves away from the attracting device  162  and reaches the opening  232 , the dynamic slide  164  can move downwards and return to the second electronic module  120 . The dynamic slide  164  and the attracting device  162  are preferably attracted to each other with a magnetic force. For example, the dynamic slide  164  is made of a magnetic material while the attracting device  162  is made of a ferromagnetic material, the dynamic slide  164  is made of a ferromagnetic material while the attracting device  162  is made of a magnetic material, or both the dynamic slide  164  and the attracting device  162  are made of a magnetic material with their adjacent surfaces having different polarities. 
   While the dynamic slide  164  is made of a magnetic material, a magnetic device (not shown), which is made of a magnetic material and has one surface having the same polarity as the upper surface of the dynamic slide  164 , can be disposed above and have the one surface facing to the opening  232 , thereby replacing or assisting the elastic device  166  to push the dynamic slide  164  back to the second electronic module  120  by a repulsive force formed between the dynamic slide  164  and the magnetic device. 
   When the dynamic slide  164  returns back to the second electronic module  120  through the opening  232 , the upper surface of the dynamic slide  164  is preferably lower or equal to the surface  240  of the second electronic module  120  to avoid interference with the sliding of the first shell  112  on the surface  240  of the second electronic module  120 . After being withdrawn from the first track  230  and returning back to the second electronic module  120 , the dynamic slide  164  does not occupy the first track  230  so that the first shell  112  can continuously slide along the first track  230  until the first slide  210  is moved to the end of the first track  230 . 
   Accordingly, the dynamic sliding module according to the present invention can increase not only the sliding stability between two sliding electronic modules for an electronic device but also the slide-out area of the electronic device such that the electronic device, e.g. an slide cell phone as shown in  FIGS. 2A to 2C , can provide not only a smooth sliding process but also a larger slide-out area of the surface  240  for installing additional operation devices, such as a handwriting board, thereby effectively controlling the electronic device. 
     FIG. 3  illustrates an electronic device with the dynamic sliding module according to a second preferred embodiment of the present invention. Referring to the drawing, a wedge-shaped block  304  adjacent to the opening  232  of the first track  230  is disposed under a second shell  114  of the first electronic module  110 . While the dynamic slide  164  is moved to the opening  232 , the dynamic slide  164  can be pushed downwards and out of the opening  232  by the incline of the wedge-shaped block  304  so as to retract back to the surface  240  of the second electronic module  120 . 
   The height of the dynamic slide  164  above the track  230  can be lower than the first slide  210  such that the dynamic slide  164  is easily pushed out of the opening  232  by the wedge-shaped block  304 . Alternatively, the height of the first slide  210  above the track  230  can be designed to be as low as possible to prevent the first slide  210  from touching the wedge-shaped block  304  after the dynamic slide  164  is pushed out of the opening  232  of the track  230 , thereby increasing the sliding stroke of the two electronic modules and the slide-out area. Otherwise, the wedge-shaped block  304  can be designed as a stopping block for stopping the first slide  210  from moving further. 
   The diameter of the dynamic slide  164  is preferably smaller than the diameter of the first slide  210  so as to prevent the first slide  210  from being disengaged from the opening  168  or the opening  232 . More preferably, the diameter of the first slide  210  is larger than the diameters of the first opening  168  and the second opening  232  such that the first slide  210  can be prevented from being disengaged from the opening  168  or the opening  232  while moving along the track  230 . 
   Accordingly, the dynamic sliding module according to the present invention can effectively increase the sliding stability between two electronic modules of an electronic device such as a slide cell phone, effectively increase the usable area (i.e. the slide-out area) on the electronic device, and further increase the operating functions thereof. 
   As is understood by a person skilled in the art, the foregoing preferred embodiments of the present invention are illustrative of the present invention rather than limiting of the present invention. It is intended that various modifications and similar arrangements be included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures.