Abstract:
An exemplary embodiment of a wall-mounted aiding mechanism for firmly attaching an object to a vertical wall and which is proofed against external impacts includes a casing, a sliding plate and an adjusting screw. The casing defines a first receiving space to receive the sliding block which performs a collaring or shearing action on a fastener such as a screw. The adjusting screw passes into the receiving space of the casing. The adjusting screw engages with the sliding block to lift the sliding block to a topmost position of the receiving space or disengages with sliding block to let the sliding block drop onto the neck of the fastener and hold it secure.

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure generally relates to a wall-mounted aiding mechanism for mounting a device on a wall and a wall-mounted device using the wall-mounted aiding mechanism. 
     2. Description of Related Art 
     Wall-mounted devices can be used on a wall. A typical wall-mounted device includes a main body and a plurality of mounting screws for mounting the main body on the wall. The main body may be an air conditioner, an LCD, a telephone, a clock, for example. A rear of the main body defines a plurality of mounting holes. Each mounting hole includes a collar hole and a guiding hole connecting each other. Each mounting screw includes a screw head and a fixing pole extending from the screw head. A distal end of the fixing pole is fixed in the wall. To fix the main body of the wall-mounted device on the wall, the screw heads and the fixing poles pass through the guiding holes, and the main body is pushed to move relative to the mounting screws to let the fixing poles of the mounting screws slide from the large guiding holes to the collar holes, and the fixing poles are thus blocked in the collar holes. The main body is supported on the mounting screws, and the main body is mounted on the wall. 
     However, when the main body of the wall-mounted device is impacted by an external object or force, the fixing poles are liable to slide from the collar holes to the guiding holes, and release the mounting screws from the mounting holes of the main body, such that the wall-mounted device tilts or falls from the wall. 
     What is needed, therefore, is a means which can overcome the described limitations. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
         FIG. 1  is an isometric view of a wall-mounted device according to a first embodiment of the disclosure, and the wall-mounted device includes a main body, wall-mounted aiding mechanisms, and mounting screws. 
         FIG. 2  is an exploded, isometric view of a wall-mounted aiding mechanism and a mounting screw of the wall-mounted device of  FIG. 1 , the wall-mounted aiding mechanism includes a casing, an adjusting screw, a sliding block, a washer and an elastic member. 
         FIG. 3  is an assembled, isometric view of the wall-mounted aiding mechanism of  FIG. 2 , showing the sliding block in a first state. 
         FIG. 4  shows the wall-mounted aiding mechanism of  FIG. 3  viewed from a reverse direction. 
         FIG. 5  is similar to  FIG. 3 , but shows the sliding block in a second state. 
         FIG. 6  shows the wall-mounted aiding mechanism of  FIG. 5  viewed from a reverse direction. 
         FIG. 7  shows the mounting screw inserting into a sliding hole of the casing, a second mounting hole of the sliding block. 
         FIG. 8  shows the mounting screw captive in the second mounting hole of the sliding block in the first state. 
         FIG. 9  shows the wall-mounted aiding mechanism of  FIG. 8  viewed from a reverse direction. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will be made to the drawings to describe various embodiments. 
     Referring to  FIG. 1 , in one embodiment, a wall-mounted device  1  includes a main body  11 , a plurality of mounting screws  10 , and a plurality of wall-mounted aiding mechanisms  12 . The main body  11  can be mounted on a wall via cooperation of the mounting screws  10  and the wall-mounted aiding mechanisms  12 . 
     The main body  11  may be any body/structure which can be mounted on a wall, for example the main body  11  can be an air conditioner, an LCD, a telephone, a clock, for example. The main body  11  includes a plurality of first mounting holes  112 . Each first mounting hole  112  includes a first guiding hole  116  and a first collaring hole  113  connecting with each other. The first guiding hole  116  has a greater overall diameter than a diameter of the first collaring hole  113 . 
     In  FIG. 2 , each mounting screw  10  includes a screw head  105  and a fixing pole  102  connecting with the screw head  105 . The screw head  105  has a greater diameter than a diameter of the fixing pole  102 , and the fixing pole  102  extends from a first stopper surface  108  of the screw head  105 . The mounting screws  10  can slide in the first mounting holes  112 . The screw head  105  of the mounting screw can pass through the first guiding hole  116  and the fixing pole  102  can then be blocked in the first collaring hole  113 . 
     Each wall-mounted aiding mechanism  12  includes a casing  13 , a sliding block  15 , an adjusting screw  16 , a washer  17 , and an elastic member  18 . 
     The casing  13  includes a base body  130 , two fixing plates  136 , and a protruding plate  137 . The base body  130  includes a bottom plate  131  and a plurality of sidewalls  132 , and the bottom plate  131  and the sidewalls  132  cooperate to form a receiving space  134  to receive the sliding block  15 . The bottom plate  131  defines a sliding hole  139 . In this embodiment, the casing  13  includes four sidewalls  132 . The fixing plates  136  are arranged opposite to each other and extend from edges of two opposite sidewalls  132 . One of the two opposite sidewalls  132  defines a through hole  138 . The protruding plate  137  is adjacent and parallel to the sidewall  132  having the through hole  138 , and the protruding plate  137  defines a through hole  138  coaxial with the through hole  138  of the sidewall  132 . One of the two fixing plates  136  perpendicularly interconnects the protruding plate  137  and the sidewall  132  having the through hole  138 . The through holes  138  define a common axis  135 . 
     The sliding block  15  includes a first end  150  and a second end  151  opposite to the first end  150 , and the first end  150  is adjacent to the sidewall  132  having the through hole  138 . The sliding block  15  defines a threaded hole  159  at the first end  150  and a second mounting hole  152  at the second end  151 . The threaded hole  159  is coaxial with the through holes  138 . The second mounting hole  152  includes a second collaring hole  153  and a second guiding hole  156  connecting with each other. The screw head  105  of the mounting screw  10  can pass through the second guiding hole  156  and the fixing pole  102  can be blocked in the second collaring hole  153  by means of what is substantially a shearing function by the sliding block  15 . The sliding block  15  is movably received in the receiving space  134  of the casing  13 , and can move up and down along a direction parallel to the common axis  135  of the through holes  138 . 
     The adjusting screw  16  includes a head portion  165  and an adjusting pole  162  connecting with the head portion  165 . The head portion  165  has a greater diameter than that of the adjusting pole  162 , and the adjusting pole  162  extends from a second stopper surface  168  of the head portion  165 . The adjusting pole  162  has a screw thread  167  at a distal end of the adjusting pole  162 . The adjusting pole  162  defines a fixing groove  169  around a circumference of the adjusting pole  162 . The washer  17  sleeves on the adjusting pole  162  and is received in the fixing groove  169 . The elastic member  18  sleeves on the adjusting pole  162 , and is located between the distal end of the adjusting pole  162  and the washer  17 . 
     Referring also to  FIG. 1  and  FIG. 3 , in assembly of each wall-mounted aiding mechanism  12  and the main body  11 , the fixing plates  136  of the casing  13  are fixed to the rear of the main body  11  via screws  133 , with the sliding hole  139  corresponding to a first mounting hole  112  of the rear of the main body  11 . The sliding block  15  is movably received in receiving space  134  of the casing  13 . The adjusting pole  162  passes through the through holes  138 . The washer  17  is fixed in fixing groove  169  of the adjusting pole  162 , and is located between the protruding plate  137  and the sidewall  132  having the through hole  138 , to prevent the adjusting pole  162  being detached from the casing  13 . The elastic member  18  sleeves on the adjusting pole  162  and is sandwiched between the washer  17  and the sidewall  132  having the through hole  138 . The elastic member  17  exerts resilient force when the adjusting pole  353  moves up and down along the direction parallel to the common axis  135 . 
     The sliding block  15  can be in a first state (see  FIGS. 3-4 ) or a second state (see  FIGS. 5-6 ). When the sliding block  15  is in the first state, the sliding block  15  is disengaged with the adjusting pole  162 , and the sliding block  15  moves down along the direction parallel to the common axis  135  due to gravity. When the sliding block  15  is in the second state, the screw thread  167  of the adjusting screw  16  is rotated into the threaded hole  159  of the sliding block  15 , the sliding block  15  is thus engaged with the adjusting pole  162 , and the sliding block  15  is thus lifted to a top position of the receiving space  134 , such that the second collaring hole  153  of the second mounting hole  152  aligns with the first collaring hole  113  of the first mounting hole  112 , and the second guiding hole  156  of the second mounting hole  152  aligns with the first guiding hole  116  of the first mounting hole  112 . 
     Referring also to  FIG. 7 , to fix the main body  11  on the wall, the wall-mounted aiding mechanisms  12  are fixed to the rear of the main body  11 , the mounting screws  10  are fixed in the wall, the sliding blocks  15  are lifted up to be in the second state, the screw heads  105  and the fixing poles  102  of the mounting screws  10  are passed through the sliding holes  139 , the second guiding holes  156  and the first guiding holes  116 . Then the main body  11  is pushed to move relative to the mounting screws  10  to let the fixing poles  102  to slide from the guiding holes  156 ,  116  into the collaring holes  153 ,  113 . Thus, the main body  11  is supported on the mounting screws  10 , and the main body  11  is mounted on the wall. After that, the adjusting screws  16  are turned to change the sliding blocks  15  to the first state from the second state. Such that, in the first state, the adjusting screws  16  disengage with the sliding blocks  15  to let the sliding blocks  15  drop onto the fixing poles  102  of the mounting screws  10  and hold it secure. 
     With the above-described configuration, when the main body  11  is impacted by an external force, and the main body  11  is pushed to move relative to the mounting screws  10 , because the sliding blocks  15  are disengaged from the adjusting poles  162  after the main body  11  is mounted on the wall, and the sliding blocks  15  are movable in the receiving spaces  134 , the sliding blocks are still supported on the mounting screws  10 , and the fixing poles  102  are still held captive in the second collaring holes  156  of the sliding block  15  when the main body  11  is pushed to move relative to the mounting screws  10 . The first stopper surfaces  108  of the mounting screws  10  prevent the mounting screws from detaching from the wall-mounted aiding mechanisms  12  (see  FIGS. 8-9 ). Therefore, the main body  11  is always firmly mounted on the wall. 
     It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the description or sacrificing all of their material advantages, the examples hereinbefore described merely being exemplary embodiments.