Abstract:
An adjustable stand for electronic devices mainly adapted to eliminate limitation on viewing angle adjustment of conventional adjustable stands is provided. The adjustable stand includes a main body, a first support frame, a second support frame, a pivot, and a sleeve. The pivot passes through and positions each of the components. A pressing portion on the pivot is used to operate the pivot and controls the movement of the pivot. Thus, a supporting angle of the first support frame and the second frame can be adjusted freely to create various viewing angles, such that the viewing angle adjustment can be adapted for different conditions and requirements diversely.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of Invention 
         [0002]    The present invention relates to a support device, and more particularly to an adjustable stand for electronic devices. 
         [0003]    2. Related Art 
         [0004]    With the rapid development of electronic technology, almost everyone has one or more electronic devices, for example, indoor telephones, TV-sets, computer screens, and so on. Most of the electronic devices have stands for placement. In the conventional art, a conventional stand for handheld electronic devices is usually a fixed stand, which is improved to an adjustable stand to overcome the disadvantage that the stand cannot be adjusted. However, a conventional adjustable stand usually has one set of supporting structure to provide support. Therefore, though a user can adjust the angle of the stand, limitations on the viewing angle adjustment still exist. 
         [0005]    In order to meet the requirements of consumers, more and more electronic devices are being improved, and many new designs have been put forward. Due to the limitations on the space and different functions in use, the requirement on the viewing angle is becoming diverse and complicated, and the stand formed by a single support structure cannot have corresponding changes to overcome the above limitations. 
         [0006]    In view of the above problems, the improvements to the adjustable stand is required to be more convenient to meet different requirements of users or eliminate limitations on the space, and the supporting angle of the stand can be adjusted freely, so as to meet the requirements on the viewing angle of the users. 
       SUMMARY OF THE INVENTION 
       [0007]    Accordingly, an adjustable stand for electronic devices, including a main body, a hollow protrusion, a first support frame, a second support frame, a sleeve, and a pivot is provided in the present invention. The pivot further includes a gear portion and a pressing portion, and a limiting bump is disposed on the pressing portion. The pivot passes through and positions each of the components. When a force is exerted on the pressing portion, the pivot will move among the hollow protrusion and holes in the first support frame and the second support frame horizontally. At this time, a user can change the supporting angle of the first support frame and the second support frame freely. Then, when the exerted force is released, the gear portion and the limiting bump urge and fix the first support frame and the second support frame, so as to retain the first support frame and the second support frame at the required positions. According to the present invention, the user can adjust and create various viewing angles freely, so that the viewing angle adjustment can be adapted to different conditions and requirements universally. 
         [0008]    In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, a preferred embodiment accompanied with figures is described in detail below. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0009]      FIG. 1  is a perspective view of the present invention. 
           [0010]      FIG. 2A  is an exploded view of an adjustable stand of the present invention. 
           [0011]      FIG. 2B  is a detailed structural view of the adjustable stand of the present invention. 
           [0012]      FIG. 2C  is a detailed structural view of the adjustable stand of the present invention. 
           [0013]      FIG. 2D  is a detailed structural view of the adjustable stand of the present invention. 
           [0014]      FIG. 3A  is a sectional view of the adjustable stand of the present invention in a first state. 
           [0015]      FIG. 3B  is a partial enlarged view of the adjustable stand of  FIG. 3A . 
           [0016]      FIG. 4A  is a sectional view of the adjustable stand of the present invention in a second state. 
           [0017]      FIG. 4B  is a partial enlarged view of the adjustable stand of  FIG. 4A . 
           [0018]      FIG. 5A  is a sectional view of the adjustable stand of the present invention in a third state. 
           [0019]      FIG. 5B  is a detailed partial enlarged view of the adjustable stand of  FIG. 5A . 
           [0020]      FIG. 6A  is a schematic view of the adjustable stand of the present invention in an original state. 
           [0021]      FIG. 6B  is a schematic view of the adjustable stand of the present invention when the first support frame is adjusted to support. 
           [0022]      FIG. 6C  is a schematic view of the adjustable stand of the present invention when the second support frame is adjusted to support. 
           [0023]      FIG. 6D  is a schematic view of the adjustable stand of the present invention at the same time when both the first and the second support frames are adjusted to support. 
           [0024]      FIG. 6E  is a schematic view of the adjustable stand of the present invention using a three-directional hook to be vertically hanging on a wall. 
           [0025]      FIG. 6F  is a schematic view of the adjustable stand of the present invention using the three-directional hook to be transversely hanging on the wall. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0026]      FIG. 1  shows an adjustable stand  101  for electronic devices  2  of the present invention, which includes a main body  1 . The main body  1  is normally arranged at the bottom of the electronic device  2 , so as to form a hollow protrusion  3 . Holes are opened at both ends of the hollow protrusion  3 . 
         [0027]    The detailed structure of the present invention is as shown in  FIG. 2 . A first support frame  4  has a first support portion  5  formed at a top end. Holes  4   a  and  4   b  are opened on supporting surfaces extending from two sides of the first support portion  5 . A first convex tooth  6  is formed on the inner periphery of the hole  4   a,  and at least one limiting slot  7  is formed in the outer surface of the first convex tooth  6 . The detailed structure is as shown in  FIG. 2B . The second support frame  8  is disposed opposite to the first support frame  4 , and a second support portion  9  is formed at a top end of the second support frame  8 . Holes  8   a  and  8   b  are opened in two sides extending from the second support portion  9 . A second convex tooth  10  is formed on the inner periphery of the hole  8   a  at the same end of the first support frame  4 . The detailed structure is as shown in  FIG. 2C . The first support frame  4  and the second support frame  8  can be, but not limited to, hollow frames. The first support portion  5  or the second support portion  9  or both can include a three-directional hook  11 , such that the user can hang the electronic device for different purposes in use. 
         [0028]    A pivot  12  has a gear portion  13  formed at one end thereof. The gear portion  13  extends outward to form a pressing portion  14 , and a limiting bump  15  is disposed on the pressing portion  14 . The detailed connections and structure are shown in  FIG. 2D . The other end of the pivot  12  passes through the holes at one side of the first support frame  4 , the second support frame  8 , and the hollow protrusion  3 , and is pivoted to the first support frame  4  and the second support frame  8 . When a force is exerted on the pressing portion  14 , the gear portion  13  and the limiting bump  15  are driven to move between the first convex tooth  6  and the second convex tooth  10  movably and horizontally. When the limiting bump  15  urges the limiting slot  7 , the gear portion  13  will be disengaged from the first convex tooth  6  and the second convex tooth  10 . 
         [0029]    A sleeve  16  is inserted in the first support frame  4 , the second support frame  8 , and the hollow protrusion  3  from the hole at the other side opposite to the pivot  12 , and is pivoted to the first support frame  4  and the second support frame  8 . The sleeve  16  is inserted in and connected to the hollow protrusion  3  with more than one screws  17 , so as to fix the first support frame  4 , the second support frame  8 , the hollow protrusion  6 , and the sleeve  16  of the device. The detailed connections and structure are shown in  FIG. 3A . A sliding slot  18  is further disposed at the end of the pivot  12 , which matches the more than one screws  17 . 
         [0030]    When a force is exerted on the pressing portion  13 , the sliding slot  18  will move relative to the screw  17 , so as to adjust the rotation angle of the first support frame  4  and the second support frame  8 . A spring  19  is further sleeved on the pivot  12  of the device. When the force exerted on the pressing portion  14  is released, the pressing portion  14  can restore its original position automatically by the restoring force of the spring  19 . 
         [0031]    Then, the detailed operating mode of the adjustable stand  101  of the present invention is further described.  FIG. 3A  is a sectional view of a first state of the present invention. At this time, no external force is exerted on the pressing portion  14 . In this state, the pivot  12  remains at the original state due to the restoring force of the spring  19  exerted on the pivot  12 . Thus, the screw  17  urges the right-most end of the sliding slot  18 , and limits the movement of the sliding slot  18 , such that the position of the pivot  12  is limited.  FIG. 3B  is a schematic enlarged view of the relationship of relative positions of the pivot  12 , the gear portion  13 , the limiting bump  15  and the first convex tooth  6 , the second convex tooth  10 , and the limiting slot  7  in the state shown in  FIG. 3A . That is, when no force is exerted on the pressing portion  14 , the gear portion  13  will be engaged with the first convex tooth  6  and the second convex tooth  10  at the same time, so as to fix the first support frame  4  and the second support frame  8  at the same time, and the adjustment cannot be made at this time. 
         [0032]      FIG. 4A  is a sectional view of a second state of the present invention. At this time, the pressing portion  14  is endured an external force. In this state, the pivot  12  and the sliding slot  18  thereon are influenced by the external force and move to the right, such that the pivot  12  is pushed into an accommodation space included in the sleeve  16 .  FIG. 4B  is a schematic enlarged view of the relationship of relative positions of the pivot  12 , the gear portion  13 , the limiting bump  15  and the first convex tooth  6 , the second convex tooth  10 , and the limiting slot  7  at this time. When the external force is exerted on the pressing portion  14 , the pivot  12  moves horizontally, such that the gear portion  13  is disengaged from the first convex tooth  6  and engaged with the second convex tooth  10 . At this time, the second support frame  8  can be fixed, and the first support frame  4  can be rotated at the same time. 
         [0033]      FIG. 5A  is a sectional view of a third state of the present invention. The pressing portion  14  is still endured the external force. At this time, the pivot  12  and the sliding slot  18  thereon continue to move towards the accommodation space of the sleeve  16  under the external force until the screw  17  urges the left-most end of the sliding slot  18 . At this time, the pivot  12  cannot be further pushed.  FIG. 5B  is a schematic enlarged view of the relationship of relative positions of the pivot  12 , the gear portion  13 , the limiting bump  15 , and the first convex tooth  6 , the second convex tooth  10 , and the limiting slot  7 . When a force is exerted on the pressing portion  14 , the pivot  12  moves horizontally, such that the gear portion  13  is disengaged from the second convex tooth  10 , and the limiting bump  15  is inserted into the limiting slot  7 . Thus, the first support frame  4  can be fixed, and the second support frame  8  can be rotated at the same time. 
         [0034]    In the second and third states of the present invention, when the user releases the force exerted on the pressing portion  14 , the pressing portion  14  can restore its original position automatically by the restoring characteristics of the spring  19 , and restore the first state of the present invention. 
         [0035]      FIG. 6A  shows a first embodiment of the present invention while the adjustable stand  101  of the present invention is in the original state.  FIG. 6B  shows a second embodiment of the present invention while the adjustable stand  101  rotates about the first support frame  4  and supports the electronic device  2  with the first support portion  5  in the second state.  FIG. 6C  shows a third embodiment of the present invention while the adjustable stand  101  of the present invention rotates about the second support frame  8 , and supports the electronic device  2  with the second support portion  9  in the third state. The fourth state of the adjustable stand  101  of the present invention integrates the second and the third states.  FIG. 6D  shows a fourth embodiment of the present invention, in which the first support frame  4  and the second support frame  8  are rotated and adjusted, and the first support portion  5  and the second support portion  9  are used at the same time to support the electronic device  2 . 
         [0036]      FIG. 6E  and  FIG. 6F  show a fifth embodiment and a sixth embodiment of the present invention respectively, in which the present invention is hung in use. According to these two embodiments, the three-directional hook  11  of the adjustable stand  101  of the present invention is used to hang the electronic device on a wall vertically or transversely according to requirements of the user. The user can adjust the present invention for different hanging methods, so as to be adapted to different viewing angles when the present invention is hung in use. 
         [0037]    It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.