Abstract:
A screen transportation device has a frame; a carrier being movable between a first position and a second position; a linkage having one end pivoted with a first connecting part on the carrier and another end slid along and pivoted with the frame; and a guiding device pivoted with a second connecting part on the carrier and being movable in the frame; wherein the carrier is able to pivot with the second connecting part on the carrier between a first angle and a second angle.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a screen transportation device, and in particular to a transportation device for a liquid crystal display in a vehicle.  
       BACKGROUND OF THE INVENTION  
       [0002]     A translation apparatus for a liquid crystal displayer in automobile has several types to adapt users&#39; needs. One of the prior arts is manual while the other is automatic. However, people are not satisfied with those products, and more accommodative, convenient, and rapidly are concerned.  
         [0003]     Generally, a liquid crystal display in a vehicle is provided for watching TV or displaying some information. One kind of the liquid crystal display declared in the patent No. 381803 issued from Taiwan has a panel located on a regular shelf. It must be mounted on the shelf and always is installed on the driving assistant&#39;s bracket so that the panel can&#39;t be ensconced but soiled.  
         [0004]     In view of this, there is another kind of the liquid crystal display that has a scalable panel. Therefore, the panel can be taken in a case by a mechanical driven device declared in the patent No. 502850 issued from Taiwan. However, because this device provides a active force with an elastic component which makes the panel move between a first position and a second position in the case, the elastic component could be elastic fatigue under frequently used for a long time. That causes the panel to be disabled and inconvenient.  
         [0005]     As the reasons above, there is a more another kind of the liquid crystal display that has a scalable panel without any elastic component declared in the patent No. 265920 issued from Taiwan. In that patent, there are two motor installed in the device. The one is driven a mechanism to take the panel in or bringing the panel out of a case, and the other is driven the panel to turn into a vertical state or a horizontal state. Therefore, this device causes the waste of the electricity and cost.  
         [0006]     Thus the present invention is aimed to provide a translation apparatus that overcomes the drawbacks of the prior art.  
       SUMMARY OF THE INVENTION  
       [0007]     A primary objective of the present invention is to provide a screen transportation device comprising a linkage and a guiding device that constrain a transportation of a screen and uses only one motor.  
         [0008]     Another objective of the present invention is to provide the said screen transportation device with respect to contain the panel and pull it out for viewing the liquid crystal display.  
         [0009]     In accordance with the present invention, to realize the above objectives, a screen transportation device has a frame; a carrier being movable between a first position and a second position; a linkage having one end pivoted with a first connecting part on the carrier and another end slid along and pivoted with the frame; and a guiding device pivoted with a second connecting part on the carrier and being movable in the frame; wherein the carrier is able to pivot with the second connecting part on the carrier between a first angle and a second angle.  
         [0010]     The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0011]      FIG. 1  is an exploded view in accordance with one embodiment of the invention.  
         [0012]      FIG. 2  is a perspective view in accordance with the embodiment of the invention.  
         [0013]      FIG. 3   a  is a sectional view in accordance with the embodiment of the invention at the first position.  
         [0014]      FIG. 3   b  is a sectional view in accordance with the embodiment of the invention at the second position.  
         [0015]      FIG. 3   c  is a sectional view in accordance with the embodiment of the invention at the third position.  
         [0016]      FIG. 4  is an exploded view in accordance with another embodiment of the invention.  
         [0017]      FIG. 5  is a perspective view in accordance with the second embodiment of the invention.  
         [0018]      FIG. 6   a  is a sectional view in accordance with the second embodiment of the invention at the first position.  
         [0019]      FIG. 6   b  is a sectional view in accordance with the second embodiment of the invention at the second position.  
         [0020]      FIG. 6   c  is a sectional view in accordance with the second embodiment of the invention at the third position. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0021]     Referring to  FIGS. 1 and 2  for a first embodiment of the invention, a screen transportation device includes a panel  10 , two linkages  20 , a frame  30 , and a guiding device  40 . The frame  30  has two linear slots  31  formed respectively on opposed sides of the frame  30  and an opening  32  defined in a front side of the frame  30 . Each of the linkages  20  has one end pivoted with one of first connecting parts  11  on opposed sides of the panel  10 , and has another end slid along and pivoted with a respective one of the linear slots  31  of the frame  30 . Two opposed sides of the guiding device  40  are respectively pivoted with second connecting parts  13  on opposed sides of the panel  10 , and each side of the first connecting parts  11  and second connecting parts  13  are not aligned in a horizontal direction of the panel  10 . The guiding device  40  is slid along inside of the frame  30 . The screen transportation device equipped with a motor (not shown). The motor is installed on the guiding device  40  and functions as a driver to move the guiding device  40  along a longitudinal direction of the frame  30  while the panel  10  moves with the guiding device  40 . Besides, the screen transportation device has a controller (not shown) to command the operation of the motor.  
         [0022]     Referring to  FIGS. 3   a,    3   b  and  3   c  for an embodiment of the invention,  FIG. 3   a  is a sectional view in accordance with a cutting line  3   a - 3   a  shown in  FIG. 2 ,  FIG. 3   b  is a sectional view in accordance with the embodiment of the invention at the second position,  FIG. 3   c  is a sectional view in accordance with the embodiment of the invention at the third position. At the first position shown in  FIG. 3   a,  the panel  10  stays in the frame  30  initially. After a user starts the motor by the controller, the motor drives the guiding device  40  to move to the opening  32  along the slots  31 , and the guiding device  40  moves the panel  10  horizontally with the linkages  20  until it achieves the second position shown in  FIG. 3   b  wherein the panel  10  is pulled out of the frame  30 . At the same time, the motor drives the guiding device  40  continuously and makes the panel  10  keep moving outwards. The linkages  20  stop at the slots  31  and respectively pull the first connecting parts  11  on opposed sides of the panel  10 , because the sliding stroke of the guiding device  40  is longer than the longitudinal distance of the slot  31 . The panel  10  pivots with the linkages  20  and turns into a vertical state at the third position shown in  FIG. 3   c.    
         [0023]     When the user wants to return the panel  10  to the stored state, the user can start the motor by using the controller. The motor drives the guiding device  40  to move inside along the frame  30  so that the panel  10  turns from the third position shown in  FIG. 3   c  into the second position shown in  FIG. 3   b.  Then, the motor keeps the guiding device  40  moving inwards, and the guiding device  40  brings the linkages  20  to move along the slot  31  until the panel  10  achieves the first position shown in  FIG. 3   a.    
         [0024]     Referring to  FIGS. 4 and 5 ,  FIG. 4  is an exploded view in accordance with another embodiment of the invention, and  FIG. 5  is a perspective view of  FIG. 4 . The screen transportation device includes a panel  10 , two linkages  20 , a frame  30 , two sliders  22 , and a guiding device  40 . The frame  30  has two linear slots  31  formed respectively on opposed sides of the frame  30  and an opening  32  formed on a front side of the frame  30 . Each of the linkages  20  has one end pivoted with one of first connecting parts  11  on opposed sides of the panel  10 , and has another end pivoted with a respective one of the sliders  22 . The sliders  22  are slid along the slots  31  respectively. Two opposed sides of the guiding device  40  are respectively pivoted with second connecting parts  13  on opposed sides of the panel  10 , and each side of the first connecting parts  11  and second connecting parts  13  are not aligned in a longitudinal direction of the panel  10 . The guiding device  40  is slid along inside of the frame  30 . The screen transportation device has a motor (not shown). The motor is installed on the guiding device  40  and functions as a driver to move the guiding device  40  along a longitudinal direction of the frame  30  while the panel  10  moves with the guiding device  40 . Besides, the screen transportation device has a controller (not shown) to command the operation of the motor.  
         [0025]     Referring to  FIGS. 6   a,    6   b  and  6   c,    FIG. 6   a  is a sectional view in accordance with a cutting line  6   a - 6   a  shown in  FIG. 5  at the first position,  FIG. 6   b  is a sectional view in accordance with the embodiment of the invention at the second position,  FIG. 6   c  is a sectional view in accordance with the embodiment of the invention at the third position. At the first position shown in  FIG. 6   a,  the panel  10  stays in the frame  30  initially. After a user starts the motor by the controller, the motor drives the guiding device  40  to move to the opening  32  along the slots  31 , and the guiding device  40  brings the panel  10  to go horizontally with the linkages  20  until it achieves the second position shown in  FIG. 6   b  wherein the panel  10  is pulled out of the frame  30 . At the same time, the motor drives the guiding device  40  continuously and makes the panel  10  keep moving outwards. The sliders  22  make the linkages  20  stop at the slots  31  and respectively pull the first connecting parts  11  on opposed sides of the panel  10 , because the sliding stroke of the guiding device  40  is longer than the stroke of the sliders  22 . The panel  10  pivots with the linkages  20  and turns into a vertical state at third position shown in  FIG. 6   c.    
         [0026]     When the user wants to return the panel  10  to its stored status, the user can start the motor by using the controller. The motor drives the guiding device  40  to move inside along the frame  30  linearly so that the panel  10  turns from the third position shown in  FIG. 6   c  into the second position shown in  FIG. 6   b.  Then, the motor keeps the guiding device  40  moving inwards, and the guiding device  40  brings the sliders  22  with the linkages  20  to move along the slot  31  until the panel  10  achieves the first position shown in  FIG. 6   a.    
         [0027]     Although the present invention has been described with reference to the preferred embodiment thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.