Abstract:
The present invention is a clamping base, including a body capable of engaging with and holding a camera, and a second wall portion capable of being detached from and engaged with the body. The clamping base further includes a moving portion. The moving portion includes a sliding rod and a first wall portion set at one end of the sliding rod. The sliding rod can perform a push-pull movement on the body and the other end of the sliding rod is set inside the body.

Description:
FIELD OF THE INVENTION 
   The present invention relates to a base for a camera; particularly, it relates to a clamping base capable of flexibly adjusting a holding position so that a camera can be easily installed on the clamping base. 
   BACKGROUND OF THE INVENTION 
   The base for holding the conventional web cams to an electronic device, such as a notebook, an LCD, and so on, is as follows: One means is to adapt the clamping force of a damper so as to clamp the web cam on the electronic device. Although the damper can be adjusted according to the thickness of the various electronic devices, large clamping force can easily cause the electronic device to break. Furthermore, the main drawback of the damper is that for those electronic devices with a greater thickness, the length of the two clamping arms of the damper must be increased. Another means is to adapt a base in a slight n-shape so as to utilize the fixed size of the opening of the base; the two opposite sidewalls of the opening press against the two sides of the electronic device respectively. The main drawback of the n-shape base is that because the size of the opening of the n-shape base is fixed, it is only useful for the electronic device having the same thickness as the size of the opening. 
   Due to the two conventional means being limited to the thickness of the electronic device, the inventor of the present invention provides an improved easily adjustable clamping base so that the web cam can be more easily installed on the base in accordance with the thickness of a variety of electronic devices. 
   SUMMARY OF THE INVENTION 
   An objective of the present invention is to provide a clamping base capable of being detached from or engaged with a camera. 
   Another objective of the invention is to provide a clamping base for a camera which can flexibly adjust the holding position in accordance with various thicknesses of electronic devices. 
   In order to accomplish the above objectives, the present invention provides a clamping base of a camera, including a body capable of engaging with and holding a camera, and a second wall portion capable of being detached from and engaged with the body. The body includes a pressing plate, wherein the pressing plate is used to allow the camera to be inserted therein, and thus to press against and hold the camera. The clamping base further includes a moving portion; the moving portion includes a sliding rod and a first wall portion set at one end of the sliding rod; wherein the sliding rod can perform a push-pull movement on the body, and the other end of the sliding rod is set inside the body. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above objects and advantages of the present invention will become more apparent with reference to the appended drawings wherein: 
       FIG. 1  shows a perspective view illustrating the clamping base of the present invention and the camera before engagement; 
       FIG. 2  shows a perspective view illustrating the clamping base of the present invention and the camera after engagement; 
       FIG. 3  shows a perspective view illustrating the clamping base of the present invention in which the first wall portion is detached from the body; 
       FIG. 4A  shows a side elevational view of the clamping base with the camera illustrating the wallboard of the first wall portion being moved closed to the first wall portion of the moving portion; 
       FIG. 4B  shows a side elevational view similar to  FIG. 4A  illustrating the wallboard of the first wall portion being moved far from the second wall portion of the moving portion; 
       FIG. 5  shows a perspective view illustrating the moving portion being pulled away the body; 
       FIG. 6  shows a side elevational view of the clamping base of the invention with the camera illustrating the clamping base holding an electronic device; 
       FIG. 7A  shows a sectional view of the body and the moving portion of the present invention illustrating the moving portion being not pulled away the body; and 
       FIG. 7B  shows a sectional view of the body and the moving portion of the present invention illustrating the moving portion being pulled away the body. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring to  FIG. 1 ,  FIG. 2  and  FIG. 3 , the elastic plate  21  of the camera  20  is inserted under the pressing plate  11   a  (as shown in  FIG. 3 ) of the clamping base  10 , that is, the elastic plate  21  is pressed against and held by the elasticity of the pressing plate  11   a  so that the camera  20  can be stably disposed on the clamping base  10 . The material of the pressing plate  11   a  of the present invention can be made of a malleable plate, such as a plastic plate, or a metallic plate, etc. 
   Referring to  FIG. 3  again, the clamping base  10  of the present invention includes a body  11 , a moving portion  13 , and a first wall portion  15 . The body  11  can be in a slightly rectangular shape. The top of the body  11  is attached with the pressing plate  11   a , and the bottom thereof is detachably engaged with the first wall portion  15 . Further, it can be seen that the pressing plate  11   a  at an end thereof joined to a lateral side of the body and the moving portion  13  is disposed at another lateral side of the body opposite to the lateral side joining the pressing plate  11   a . The body  11  has a semicircular recess and an L shaped groove (not shown) at another two opposite lateral sides thereof respectively. The first wall portion  15  further provides a horizontal plate section with a long lateral side thereof extending downward a wallboard  15   a  and a semicircular upper plate section with an L shaped fitting piece at the inner side thereof extends upward from two short sides of the first wall portion  15  respectively corresponding to the semicircular recess and the L shaped groove. In addition, a split type engaging bar is disposed at the center of the horizontal plate section for engaging with the bottom of the body with the semicircular plate section and the L shaped fitting piece fitting with the semicircular recess and the L shaped groove respectively. Referring to  FIG. 4A  and  FIG. 4B , the first wall portion  15  can be engaged with the body  11  in two ways. In  FIG. 4   a , the wallboard  15   a  of the first wall portion  15  is engaged to the body  11  in a way of being close to the second wall portion  13   a . In  FIG. 4B , the wallboard  15   a  of the first wall portion  15  is engaged to the body  11  in a way of being far from the second wall portion  13   a . That is, the position of the first wall portion  15  shown in  FIG. 4A  is opposite to the position of the first wall portion  15  shown in  FIG. 4B . 
   Referring to  FIG. 5 , the moving portion  13  further includes two parallel sliding rods  13   b , and the second wall portion  13   a  set at one end of each of the sliding rods  13   b . The other end of the respective sliding rod  13   b  is set inside the body  11  so that the sliding rods  13   b  are movable inward and outward the body  11 . In other words, the sliding rods  13   b  are capable of being pushed into and pulled out the body. In this way, the distance between the second wall portion  13   a and the wallboard  15   a  can be changed while the clamping base of the invention being in use. Referring to  FIG. 6 , when the clamping base  10  of the present invention is in use, the moving portion  13  is pulled away the body  11  with the slide rods  13   b  and the wallboard  15   a  is engaged to the body at a selected position such that the second wall portion  13   a  and the wallboard  15   a  are capable of pressing against the two sides of the electronic device  30 . The electronic device  30  can be a notebook or an LCD. The distance between the second wall portion  13   a  and the wallboard  15   a  can be flexibly varied depending on the lengths of the sliding rod  13   b  being pulled outward the body  11  and the position of engagement between the first wall portion  15  and the body  11  in accordance with different electronic devices. 
   Referring to  FIG. 7A  and FIG., an elastic element  13   c , such as a spring, is provided to coil around the respective sliding rod  13   b  of the moving portion  13  in the body  11 . An end of the elastic element  13   c  is fixedly joined to the free end of the respective sliding rod  13   b  and another end of the elastic element  13   c  presses against a lateral side of the body  11  next to the moving portion  13 . Thus, the second wall portion  13   a  can be tightly pressed against the electronic device  30  by the elasticity of the spring. 
   The clamping base  10  of the present invention allows the camera  20  to be easily held and detached at the same time. Furthermore, the clamping base  10  provides an extensible moving portion  13 . Together with the various combinations of the second wall portion  15  and the body  11 , the clamping base  10  of the present invention can hold the camera  20  on the electronic device  30  with any thickness. The clamping base  10  of the present invention can be adapted to any type of camera  20 , such as a web cam, a digital camera, etc. 
   Those skilled in the art are to be noted that the present invention can be modified without leaving the scope and spirit of the present invention. The scope of the present invention is covered by the appended claims and all the substantial equivalents of variation and arrangement.