Patent Publication Number: US-2015076307-A1

Title: Holder Assembly

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a holder assembly, and more particularly, to a holder assembly for supporting a displaying device. 
     2. Description of the Prior Art 
     A conventional displaying device including the liquid crystal display and the plasma display has thin-typed and tablet-typed features. The conventional displaying device is utilized to show image and information at private place or public place, such as the office, the exhibition site and the department store. In the kind of application, a view angle of the displaying device is adjusted frequently for preferred performance. Further, the view angle of the displaying device may be adjusted for showing the image information to associates or family in the office or at home. 
     Generally, the displaying device is fixed on the wall or the ceiling via the fixing holder, or is fixed on the table, the ground and any other suitable plane via the supporting holder. Procedure of utilizing the fixing holder to adjust the view angle of the displaying device has complicated steps, such as unlocking the fixing component of the fixing holder, adjusting the holder to the predetermined angle, and locking the fixing component. Procedure of utilizing the supporting holder wastes human force, such as lifting the supporting holder with the displaying device, moving to the predetermined position, and lowering the supporting holder. Besides, adjustable angle and operation method of the conventional holder are constrained, the conventional holder can not be applied to the novel displaying device appropriately. The conventional skill does not solve the existing drawbacks. 
     SUMMARY OF THE INVENTION 
     The present invention provides a holder assembly for easily adjusting a view angle of the displaying device, so as to increase convenience of angle adjustment of the displaying device and enhance utility of the displaying device. 
     According to the claimed invention, a holder assembly for supporting the displaying device is disclosed in the present invention. The holder assembly includes a base, a brace and a supporting arm. An end of the brace is connected to the base, and a sphere is disposed on the other end of the brace. An end of the supporting arm is connected to the displaying device, and a pivot portion is disposed on the other end of the supporting arm. The pivot portion corresponds to the sphere, and the sphere is rotatably disposed on the pivot portion. 
     According to an embodiment of the present invention, the pivot portion includes two pivot planks. An arc surface is hollowly formed on each pivot plank. The two arc surfaces face to each other and fit in with a surface of sphere, and the sphere is rotatably clamped between the two arc surfaces. 
     According to the embodiment of the present invention, the supporting arm includes two lateral planks. Ends of the two lateral planks are connected to the displaying device, and the pivot planks are respectively disposed on the other ends of the two lateral planks. 
     According to the embodiment of the present invention, the two lateral planks are connected to each other, and an opening is formed between the two pivot planks. 
     According to the embodiment of the present invention, the brace includes a support bar. A width of the opening is substantially equal to a sectional diameter of the support bar. The width of the opening is substantially smaller than a diameter of the sphere. An end of the support bar is connected to the sphere, and the other end of the support bar passes through the opening to connect the brace. 
     According to the embodiment of the present invention, the support bar rotates relative to the pivot plank between a first end and a second end of the opening. 
     According to the embodiment of the present invention, rotation between the support bar and the pivot plank is substantially equal to 90 degrees when the support bar rotates relative to the pivot plank from the first end of the opening to the second end of the opening. 
     According to the embodiment of the present invention, the arc surface includes an abrasion proof layer, and the abrasion proof layer contacts the sphere. 
     According to the embodiment of the present invention, the pivot plank and the sphere are made of aluminum alloy, zinc alloy, polyacetal or bakelite. The abrasion proof layer is made of polyacetal. 
     According to the embodiment of the present invention, a connect plank is pivotally disposed on an end of the lateral plank opposite to the pivot plank. The connect plank is connected to a connector conforming to VESA standard of the displaying device. 
     The holder assembly of the present invention can adjust the view angle of the displaying device conveniently and rapidly. The displaying device not only can execute parallel rotation relative to the holder assembly within 360 degrees, but also can overturn to 90 degrees at the perpendicular direction via the holder assembly. Comparing to the prior art, the present invention can increase rotation convenience of the displaying device and enhance utility of the displaying device. 
     These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded diagram of a holder assembly according to a preferred embodiment of the present invention. 
         FIG. 2  is a diagram of the holder assembly without a brace according to the preferred embodiment of the present invention. 
         FIG. 3  is a diagram of the holder assembly and a displaying device at a firs operation mode according to the preferred embodiment of the present invention. 
         FIG. 4  is a diagram of the holder assembly and the displaying device at a second operation mode according to the preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Please refer to  FIG. 1  to  FIG. 4 , which illustrate a holder assembly according to an embodiment of the present invention. The holder assembly  10  is used to support a displaying device  20 . In this embodiment, the displaying device  20  can be the LCD with touch function, and a connector  22  conforming to Video Electronics Standards Association (VESA) standard is disposed on a back  21  of the displaying device  20 . The displaying device  20  is not limited to the above-mentioned embodiment, and depends on actual demand. The holder assembly  10  includes a base  30 , a brace  40  and a supporting arm  50 . The base  30  can be a disk structure. The brace  40  can be a cylinder structure. An end of the brace  40  is connected to center of the base  30 , and a support bar  41  is disposed on the other end of the brace  40 . An end of the support bar  41  is connected to center of a top surface of the brace  40 . It is to say, the support bar  41  and the brace  40  are coaxial, and the support bar  41  stretches along an axle of the brace  40 . A sectional diameter of the support bar  41  is smaller than a sectional diameter of the brace  40 . A sphere  42  is connected to an end of the support bar  41  opposite to the brace  40 . A diameter of the sphere  42  is greater than the sectional diameter of the support bar  41 . The sphere  42  is made of abrasion proof material, such as aluminum alloy, zinc alloy, polyacetal or bakelite. 
     An end of the supporting arm  50  is connected to the displaying device  20 . A pivot portion  51  is disposed on the other end of the supporting arm  50  opposite to the displaying device  20 . The pivot portion  51  corresponds to the sphere  42 , and the sphere  42  is rotatably disposed on the pivot portion  51 . The supporting arm  50  includes two lateral planks  52  and two pivot planks  53 . The pivot plank  53  stretches from an end of the lateral plank  52 . In this embodiment, the lateral plank  52  is integrated with the pivot plank  53  monolithically. A connect plank  54  is disposed on an end of the lateral plank  52  opposite to the pivot plank  53 . The connect plank  54  is connected to the connector  22 , which conforms to VESA standard, disposed on the back  21  of the displaying device  20 . In the other embodiments, the connect plank can pivot to the lateral plank via a shaft for an angle adjustment of the displaying device. The two lateral planks  52  can be connected to each other in an engaging manner or a locking manner, and an opening  55  is formed between the two pivot planks  53 . 
     Two arc surfaces  56  are respectively hollowly formed on inner sides of the two pivot planks  53 . The two arc surfaces  56  face to each other and fit in with a surface of the sphere  42 . When the two lateral planks  52  are connected, the pivot planks  53  respectively press two sides of the sphere  42 , and the sphere  42  can be rotatably clamped between the two arc surfaces  56  in a tight fit manner. Friction generated by the tight fit manner can be utilized to fix a relative angle between the displaying device  20  and the holder assembly  10 . For abrasion between the pivot plank  53  and the sphere  42 , the pivot plank  53  is preferably made of the abrasion proof material, such as aluminum alloy, zinc alloy, polyacetal or bakelite. In the other embodiments, material selection of the sphere and the pivot plank is designed according to a weight of the displaying device for altering the friction between the sphere and the pivot plank. For example, the displaying device has huge volume and heavy weight, the sphere and the pivot plank have to be made of the abrasion proof material with higher coefficient accordingly. In the other embodiments, an abrasion proof layer can be disposed on the arc surface, which contacts against the sphere to generate the friction with the sphere so as to prevent the abrasion. Further, the abrasion proof layer is preferably made of polyacetal, and is adhered to the arc surface. The abrasion proof layer can be replaced according to user&#39;s actual demand. 
     When the two lateral planks  52  are connected, the opening  55  is formed between the two pivot planks  53 . A width of the opening  55  is substantially equal to or greater than a sectional diameter of the support bar  41 , and the width of the opening  55  is smaller than the diameter of the sphere  42 , so that the sphere  42  can be kept between the two arc surfaces  56 . Meanwhile, an end of the support bar  41  passes through the opening  55  to connect the brace  40 . The support bar  41  can rotate relative to the pivot plank  53  between a first end  61  and a second end  62  of the opening  55 . An action that the support bar  41  rotates relative to the pivot plank  53  between the first end  61  and the second end  62  of the opening  55  equals the overturn. 
     The overturn means that the pivot plank  53  (including the supporting arm  50  and the displaying device  20 ) rotates relative to the support bar  41  (including the brace  40 ) at a vertical direction (perpendicular to the base  30 ). In this embodiment, relative rotation between the support bar  41  and the pivot plank  53  is substantially equal to 90 degrees when the support bar  41  rotates relative to the pivot plank  53  from the first end  61  to the second end  62  of the opening  55 . A block plank  57  is disposed on the second end  62  of the opening  55 . The support bar  41  is blocked by the block plank  57  when rotating at the second end  62 , the support bar  41  stops rotation, and the displaying device  20  can be switched from the vertical mode (perpendicular to the base  30 ) to the parallel mode (parallel to the base  30 ). It is to say, the displaying device  20  can be overturned between the vertical mode and the parallel mode to adjust an angle along the perpendicular direction, and the rotation range is constrained within 90 degrees. Structure of the present invention can prevent the displaying device  20  from overturn, which results in entanglement and detachment of connecting wires (such as the power wire and the signal transmission wire, not shown in figures) of the displaying device  20 . In the other embodiment, the rotation range can be enlarged or reduced (such as varying position of the block plank or taking away the block plank). The larger rotation range is suitable for the device with wireless transmission function, such as the tablet computer. 
     As connection between the sphere  42  and the arc surface  56 , the pivot plank  53  can rotate to 360 degrees at a direction parallel to the radial direction of the support bar  41 . The displaying device  20  can rotate to 360 degrees when the displaying device  20  is positioned at the parallel mode, the vertical mode, or any angle between the parallel mode and the vertical mode, so that the present invention has preferred convenience. For example, when two persons sit opposite to each other, the displaying device  20  can rotate parallel easily via the holder assembly  10  to show the displaying device  20  from one person to the other one. Further, the displaying device  20  can rotate from the vertical mode to the parallel mode rapidly via the holder assembly  10  to simultaneously show the displaying device  20  to the two persons for mutual discussion. 
     In conclusion, the holder assembly of the present invention can adjust the view angle of the displaying device conveniently and rapidly. The displaying device not only can execute parallel rotation relative to the holder assembly within 360 degrees, but also can overturn to 90 degrees at the perpendicular direction via the holder assembly. Comparing to the prior art, the present invention can increase rotation convenience of the displaying device and enhance utility of the displaying device. 
     Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.