Abstract:
A holder for a portable electronic device, which includes a base and an upper cover, wherein the first adjustment element is used by the base to link up the first clamping arm and the second clamping arm for synchronous adjustable motion, and the first release button is provided for spacing control; the second adjustment element is used by the upper cover to link up the third clamping arm and the fourth clamping arm for synchronous adjustable motion, and the second release button is provided for spacing control; by the composition of the above elements, the operation of holding tightly in multiple directions is achieved, to thereby avoid the portable electronic device flopping down.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    A holder for a portable electronic device and, more particularly, to a holder of a portable electronic device for tightly holding in multi directions, to thereby achieve the operation of tightly holding and loosing in multiple directions to avoid the held element flopping down. 
         [0003]    2. Brief Description of the Related Art 
         [0004]    The computer developed from a computer room to a personal computer, a notebook PC, and then to the touch portable electronic device such as a smart phone, a tablet PC. By the touch screen technology, users may intuitively click the target items on the computer screen directly, and zoom in and zoom out the image or words showed on the screen by the poking or squeezing actions using at least two fingers. This kind of operation method by directly clicking on the screen makes the distance between the user and the screen nearer. Otherwise, the operation method of a conventional computer PC using a keyboard between the user and the screen is not as convenient as the touch screen used in the portable electronic device as the operation interface; and the portable electronic device is a simple plate structure, and users may touch and operate on the screen easily. 
         [0005]    The portable electronic devices usually have simple structure and fine appearance, so they are often attractive to users, but their appearance may easily be affected due to scratches or dirt. Therefore, there are covers for portable electronic devices made from various materials in the market, these covers are usually used to cover on the rear side of electronic devices and hollowed to display the screen part for operating, to thereby protect the fine appearance. Since many portable electronic devices are simple piece structure without additional supporting devices, when using a large device, such as a tablet PC, users have to support the PC by one hand and operate it by another hand all the time. Even when putting on the table or legs, users have to support the PC by hands to make the screen standing for the best watching angle, so that it is extremely inconvenient for users, it may lead to arm fatigue easily that if using for a long time. Otherwise, the portable electronic device is usually used in hands, and the user not only operates by both hands, but also should hold it to avoid flopping down. However, holding the portable electronic device for a long time may cause hand soreness and numbness. In additional, the appearance of this kind of portable electronic devices are usually designed as streamlines with a smooth arc for product beautiful, so that it is unfavorable for holding it by hands. 
         [0006]    Moreover, a general tablet PC is mainly designed for users to hold it on hands when using. However, the size of a general tablet PC with 10-inch screen is usually about 18 cm×24 cm and the weight of it is at least 500 g for holding one side of the tablet PC by one hand and operating on the touch screen of the PC by another hand conveniently. The hand used to hold one side of the screen not only used to support the weight of the PC, but also support the leverage generated by the gravity due to the position holding by the hand is not the center of gravity of the PC. Therefore, the hand load may be increased and the supporting time may be reduced, and also cause arm fatigue and increase the burden. 
         [0007]    In order to improve the inconvenience of portable electronic devices, various inventions related holding devices are developed. The patent invention TW M440633 (called the cited reference) shown in  FIG. 1  is a typical representative. The cited reference is a fastening structure of a nearing seat, a carousel  111  and multiple gears  112  of the adjustment module  11  is jointed to the shaft part in the inner channel of the seat body  1 , the guide way plate  13  of the clamping mechanism is set on its circumference for relatively sliding. When the user pulls the carousel  111  to rotate, the swing arm  15  is pushed by the shift part  14  and shifted outwards to form a release state. And then the user pulls the guide way plate  13  to slide relatively outwards or inwards, so that the gear rack part  16  on the guide way plate  13  is engaged to the gear  112  for rotating, and the carousel  111  rotates inverse after being released. The locking part of the swing arm  15  can be used to buckle inwards at outside edge of the gear rack part  16  to form a locked position state, and the guide way plate  13  can only be inwards against on a lateral side of an electronic device, to thereby achieve the effect of stable structure and easy operation. Although the structure of the cited reference may be provided to place and clamp the portable electronic device, the clamping operation is up and down, left and right synchronous action, once when loosing, the portable electronic device instantaneously lose all grip. Users cannot react immediately due to the fast releasing, and the portable electronic device may be incautiously flopped down and broken. 
       SUMMARY OF THE INVENTION 
       [0008]    In view of this, the inventor finally completed the holder for portable electronic device of the present invention after numerous improvements, namely, the object of the present invention is to provide a holder of portable electronic devices for tightly holding in multi directions, to thereby avoid the electronic devices flopping down due to loosely holding, and then cause the held element flopping down. 
         [0009]    The holder for portable electronic devices according to the present invention includes a base and an upper cover. 
         [0010]    The base, which is provided to place a first clamping arm, a second clamping arm, a first adjustment element, a first release button and a first elastic element inside it, the first clamping arm is set on a first side of the base, a first holding part is set on its outside and a first guide piece is extended inwards, a first adjustment part is set on one lateral side of the first guide piece and a second adjustment part is set on another lateral side, the second clamping arm is placed on a second side of the base, a second holding part is set on its outside and a second guide piece is extended inwards, a third adjustment part is set on one lateral side of the second guide piece, the first adjustment element is engaged to the first adjustment part and the third adjustment part, the first release button includes a second elastic element, the second elastic element is used to provide elasticity for the first release button to be wedged and limited in the second adjustment part, the first elastic element is used to provide elasticity for the first clamping arm and the second clamping arm to adjust and release. 
         [0011]    The upper cover, which is combined with the base, is used to place a third clamping arm, a fourth clamping arm, a second adjusting element, a second releasing button and a third elastic element are placed inside it, the third clamping arm is set on a third side of the upper cover, a third holding part is set on its outside and a third guide piece is extended inwards, a fourth adjustment part is set on one lateral side of the third guide piece and a fifth adjustment part is set on another lateral side, the fourth clamping arm is set on a fourth side of the upper cover, a fourth holding part is set on its outside and a fourth guide piece is extended inwards, a sixth adjustment part is set on one lateral side of the fourth guide piece, the second adjustment element is engaged to the fourth adjustment part and the sixth adjustment part, the second release button includes a fourth elastic element, the fourth elastic element is used to provide elasticity for the second release button to be wedged and limited in the fifth adjustment part, the third elastic element is used to provide elasticity for the third clamping arm and the fourth clamping arm to adjust and release. 
         [0012]    The above first adjusting element and the second adjusting element are gears. 
         [0013]    The above first, second, third, fourth, fifth, sixth adjusting parts are gear trains. 
         [0014]    The above first, second, third, fourth elastic elements are springs. 
         [0015]    The above first release button, which includes a first button rod and a second elastic element, a cylindrical hole, a second fixed leg and a first tab are set on one side of the first button rod and a first handle is set on another side, the cylindrical hole is wrapped on the base, the second fixed leg is provided to fix one end of the second elastic element, the first tad is used to wedge and limit in the second adjustment part of the first clamping arm. 
         [0016]    The above second release button, which includes a second button rod and a fourth elastic element, a cylindrical hole, a fourth fixed leg and a second tab are set on one side of the second button rod and a second handle is set on another side, the cylindrical hole is wrapped on the upper cover, the fourth fixed leg is provided to fix one end of the fourth elastic element, the second tad is used to wedge and limit in the fifth adjustment part of the third clamping arm. 
         [0017]    The above second clamping arm, which includes a first fixed column, the first fixed column is provided to fix the first elastic element. 
         [0018]    The above fourth clamping arm, which includes a third fixed column, the third fixed column is provided to fix the third elastic element. 
         [0019]    The above base, a partition is set between which and the upper cover for separating. 
         [0020]    The above first, second, third, fourth holding parts, wherein a shaft group and a clamping piece are respectively set in each holding part, the shaft group is provided to reverse the clamping piece by its elasticity, to thereby fasten a portable electronic device. 
         [0021]    The above shaft group, which is a resistance shaft group. 
         [0022]    In the present invention, the first clamping arm and the second clamping arm are linked up by the first adjustment element for synchronous adjustable motion, and the first release button is provided for spacing control; the third clamping arm and the fourth clamping arm are linked up by the second adjustment element for synchronous adjustable motion, and the second release button is provided for spacing control; by the composition of the above elements, the present invention may achieve the operation of tightly holding and loosing in multiple directions, to thereby avoid the electronic devices flopping down due to loosely holding. 
     
    
     
       BRIEF DESCRIPTION OF THE INVENTION 
         [0023]    The detail structure, the applied principle, the function and the effectiveness of the present invention can be more fully understood with reference to the following description and accompanying drawings, in which: 
           [0024]      FIG. 1  is a structural diagram in the prior art; 
           [0025]      FIG. 2  is an exploded perspective diagram of the present invention; 
           [0026]      FIG. 3  is a three dimensional diagram of the present invention; 
           [0027]      FIG. 4  is a structural diagram ( 1 ) according to the present invention; 
           [0028]      FIG. 5  is a structural diagram ( 2 ) according to the present invention; 
           [0029]      FIG. 6  is a three dimensional diagram of the upper cover of the present invention; 
           [0030]      FIG. 7  is a schematic operation diagram ( 1 ) according to the present invention; 
           [0031]      FIG. 8  is a schematic operation diagram ( 2 ) according to the present invention; 
           [0032]      FIG. 9  is a three dimensional schematic diagram of the loosing state of the present invention; 
           [0033]      FIG. 10  is a partial schematic diagram ( 1 ) of reverse of the holding part of the clamping arm of the present invention; 
           [0034]      FIG. 11  is a partial schematic diagram ( 2 ) of reverse of the holding part of the clamping arm of the present invention; and 
           [0035]      FIG. 12  is a schematic diagram of the embodiment according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0036]    The above and further objects and novel features of the invention will more fully appear from the following detailed description when the same is read in connection with the accompanying drawing. It is to be expressly understood, however, that the drawing is for purpose of illustration only and is not intended as a definition of the limits of the invention. 
         [0037]    As shown in  FIG. 2  to  FIG. 6 , the holder for a portable electronic device A according to the present invention includes a base  21  and an upper cover  22 . 
         [0038]    The base  21 , which is provided to place a first clamping arm  3 , a second clamping arm  4 , a first adjustment element  71 , a first release button  8  and a first elastic element S 1  inside it. 
         [0039]    The first clamping arm  3 , which is set on a first side B 1  of the base  21 , a first holding part  30  is set on its outside and a first guide piece  31  is extended inwards, the first holding part  30  is consisted of a holding piece  32  and a clamping piece  33  wrapped in the shaft group  311  on a lateral end of the first guide piece  31 , the first holding part  3  is consisted of a holding piece  32  and a clamping piece  33  wrapped on a shaft group  311  on a lateral end of the first guide piece  31 , an aperture  312  is set in the shaft group  311 , the aperture  312  is corresponded to a lateral aperture  331  of the clamping piece  33  and a bolt  332  is provided to pass through and pivotally connected, a first adjustment part  313  is set on one lateral side of the first guide piece  31  and a second adjustment part  314  is set on another lateral side. 
         [0040]    The second clamping arm  4  is placed on a second side B 2  of the base  21 , a second holding part  40  is set on its outside and a second guide piece  41  is extended inwards, the second holding part  40  is consisted of a holding piece  42  and a clamping piece  43  wrapped on the shaft group  411  on a lateral end of the second guide piece  41 , an aperture  412  is set on the shaft group  411 , the aperture  412  is corresponded to a lateral aperture  431  of the clamping piece  43 , a bolt  432  is used to pass through and pivotally connect, a third adjustment part  413  is set on one lateral side of the second guide piece  41  and a first fixed leg  414  is set on another lateral side. 
         [0041]    The first adjustment element  71 , which is wrapped in a first convex column  211 , is engaged to the first adjustment part  313  and the third adjustment part  413 , the first adjustment element  71  is a gear, and the first adjustment part  313  and the third adjustment part  413  engaged with the first adjustment element  71  are gear trains. 
         [0042]    The first release button  8 , which includes a first button rod  81  and a second elastic element S 2 , a cylindrical hole  811 , a second fixed leg  812  and a first tab  813  are set on one side of the first button rod  81  and a first handle  814  is set on another side, the cylindrical hole  811  is wrapped on the second convex column  213  of the base  21 , the second fixed leg  812  is provided to fix one end of the second elastic element S 2 , another end of the second elastic element S 2  is against to a first groove  212  of the base  21 , the first tad  813  is used to wedge and limit in the second adjustment part  314  of the first clamping arm  3 , the second adjustment part  314  is a gear train. 
         [0043]    The first elastic element S 1 , whose one end is fixed to the first fixed leg  414  of the second clamping arm  4 , and another end is against to a second groove  214  of the base  21 . 
         [0044]    The upper cover  22 , which is combined with the base  21 , is provided to place a third clamping arm  5 , a fourth clamping arm  6 , a second adjustment element  72 , a second release button  9  and a third elastic element S 3 . 
         [0045]    The third clamping arm  5 , which is set on a third side B 3  of the upper cover  22 , a third holding part  50  is set on its outside, and a third guide piece  51  is extended inwards, the third holding part  50  is consisted of a shaft group  511  on one lateral end of the third guide piece  51  wrapped a clamping piece  52 , an aperture  512  is set in the shaft group  511 , the aperture  512  is corresponded to a lateral aperture  521  of the clamping piece  52 , and a bolt  522  is provided to pass through and pivotally connect, a fourth adjustment  513  is set on one lateral side of the third guide piece  51  and a fifth adjustment  514  is set on another lateral side. 
         [0046]    The fourth clamping arm  6 , which is set on a fourth side B 4  of the upper cover  22 , a fourth holding part  60  is set on its outside, and a fourth guide piece  61  is extended inwards, the fourth holding part  60  is consisted of a clamping piece  62  wrapped on a shaft group  611  on a lateral end of the fourth guide piece  61 , an aperture  612  is set in the shaft group  611 , the aperture  612  is corresponded to a lateral aperture  621  of the clamping piece  62 , and a bolt  622  is provided to pass through and pivotally connect, a sixth adjustment part  613  is set on one lateral side of the fourth guide piece  61 , and a third fixed leg  614  is set on another lateral side. 
         [0047]    The second adjustment element  72 , which is wrapped on the third convex column  221  of the upper cover  22 , is engaged with the fourth adjustment part  513  and the sixth adjustment part  613 , the second adjustment element  72  is a gear, and the fourth adjustment element  513  and the sixth adjustment element  613  engaged with it are gear trains. 
         [0048]    The second release button  9 , which includes a second button rod  91  and a fourth elastic element S 4 , a cylindrical hole  911 , a fourth fixed leg  912  and a second tab  913  are set on one side of the second button rod  91  and a second handle  914  is set on another side, the cylindrical hole  911  is wrapped on the fourth convex column  223  of the upper cover  22 , the fourth fixed leg  912  is provided to fix one end of the fourth elastic element S 4 , another end of the fourth elastic element S 4  is against a third groove  222  of the upper cover  22 , the second tad  913  is used to wedge and limit in the fifth adjustment part  514  of the third clamping arm  5 , the fifth adjustment part  514  is a gear train. 
         [0049]    The third elastic element S 3 , whose one end is fixed to the third fixed leg  614  of the fourth clamping arm  4 , and another end is against to a fourth groove  224  of the upper cover  22 . 
         [0050]    By the composition of the above elements, when wanting to make the first clamping arm  3  and the second clamping arm  4  loose (please refer to  FIG. 7  and  FIG. 9 ), the user pulls the first handle  814  of the first release button  8 , the first tab  813  may disengaged from being wedged and limited by the second adjustment part  314 . Simultaneously, the first elastic element  51  is no longer compressed, and it pushes the second clamping arm  4  outwards by its resisting force. The second clamping arm  4  moves and links up the first adjustment element  71  to drive the first clamping arm  3  synchronous moves outwards. And, when wanting to clamping inwards, the user pulls the first clamping arm  3  (or the second clamping arm  4 ) inwards to the last clamping position by fingers, which is the position that the first tab  813  wedged and limited by the second adjustment part  314 , to thereby avoid the first and second clamping arms loosing and moving. 
         [0051]    Besides, when wanting to make the third clamping arm  5  and the fourth clamping arm  6  loose (as shown in  FIG. 8  and  FIG. 9 ), the user pulls the second handle  914  of the second release button  9 , the second tab  913  may disengaged from being wedged and limited by the second adjustment part  514 . Simultaneously, the third elastic element S 3  is no longer compressed, and it pushes the fourth clamping arm  6  outwards by its resisting force. The fourth clamping arm  6  moves and links up the second adjustment element  72  to drive the third clamping arm  5  synchronous moves outwards. And, when wanting to clamping inwards, the user pulls the third clamping arm  5  (or the fourth clamping arm  6 ) inwards to the last clamping position by fingers, which is the position that the second tab  913  wedged and limited by the fifth adjustment part  514 , to thereby avoid the third clamping arm  5  and the second clamping arm  6  loosing and moving. 
         [0052]    As shown in  FIG. 2 , in the present invention, a partition  23  is set between the base  21  and the upper cover  23  for separating. 
         [0053]    The above first, second, third, fourth elastic elements  51 , S 2 , S 3 , S 4  are springs. 
         [0054]    As shown in  FIG. 10 ,  FIG. 11 ,  FIG. 12 , in the present invention, in order to tightly clamp and fasten the portable electronic device E, the shafts  311 ,  411 ,  511 ,  611  are resistance shafts and provided to reverse the clamping pieces  33 ,  43 ,  52 ,  62  for fixing the portable electronic device E. As shown in  FIG. 12 , it is the embodiment of the holder A for portable electronic device installed on the back of a car chair C, the clamping pieces  33 ,  43 ,  52 ,  62  are reversed by the elasticity of the shaft group  311 ,  411 ,  511 ,  611 , to thereby tightly clamp and fasten the portable electronic device E.