Abstract:
A movable lug and an assistance device cooperated with the movable lug so as to replace the equipment from the rear end of the rack and avoid from being interfered by cables of other equipments. The movable lug includes a first hinge and a second hinge. The movable lug is moved inward to yield the path when replacing the equipment so that the equipment is removed and not interfered by cables of other equipments. The assistance device makes the action of the replacement of the equipment be more smooth.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    (1) Field of the Invention 
         [0002]    The present invention relates to a movable lug and an assistance device cooperated with the movable lug, and more particularly, to the movable lug and the assistance device which allows the equipment to be removed from the rack from the rear end of the rack. 
         [0003]    (2) Description of the Prior Art 
         [0004]    Along with the requirements of more users using the internet information in the same time, a lot of routers are needed to manage the transmission of the signals. Therefore, there can be multiple routers installed in one rack. 
         [0005]    These equipments such as the routers are installed in the rack and the cables are then connected to the equipments so as to save space and easily manage the cables and the routers. As shown in  FIG. 1 , the conventional way to set the equipment  91  is to set two lugs  911  which are fixed to the rack  90  by bolts such that the equipment  91  is positioned in the rack. Because the lugs  911  have to be cooperated with the locking holes of the rack  90 , so that the equipment  91  can only be inserted into the front side of the rack  90  by its rear end. In other words, when the equipment  91  is to be removed from the rack  90 , the equipment  91  has to be removed from the front side of the rack  90 . However, there are cables of other equipments located at the removal path of the equipment  91  so that the removable action is interfered by the cables. 
         [0006]    The present invention intends to provide a movable lugs which allow the equipment to be removed from the rear end of the rack. 
       SUMMARY OF THE INVENTION 
       [0007]    The present invention relates to a movable lug which is used to fix an equipment to a rack of an assistance device. The movable lug comprises a first hinge having a first left plate and a first right plate. The first left plate is fixed to the equipment and the first right plate is fixed to the rack or the assistance device. The first right plate is pivotably connected to the first left plate. A second hinge has a second left plate and a second right plate. The second left plate is fixed to the rack or the assistance device. The second right plate is fixed to the equipment. The second right plate is pivotably connected to the second left plate. 
         [0008]    When the equipment is to be removed from the rack, the bolts extending through the first right plate and the second left plate are removed, and the first right plate and the second left plate are moved inward so as to pass through the rack and move backward. Therefore, the equipment is not interfered by cables of other equipments. 
         [0009]    Preferably, the first left plate has an elongate hole and the first right plate has multiple locking holes. The second left plate has multiple locking holes and the second right plate has an elongate hole. The locking holes are cooperated with the holes of the rack or the assistance device, these plates are secured. 
         [0010]    Preferably, the first left plate is connected to a first top plate and a first bottom plate. The first top plate has a locking hole and an elongate hole. The first bottom plate has a locking hole and an elongate hole. The second right plate is connected to a second top plate and a second bottom plate. The second top plate has a locking hole and an elongate hole. The second bottom plate has a locking hole and an elongate hole. The first and second hinges can be cooperated with the equipment that has different distances between holes. 
         [0011]    The present invention further provides an assistance device for replacing an equipment, the assistance device is connected with the movable lug. The assistance device comprises a first rail, a second rail, a tray, a first locking plate and a second locking plate. The first rail is fixed to the rack and the second rail is located corresponding to the first rail and fixed to the rack. The tray has a first slide and a second slide, wherein the first slide is engaged with the first rail and the second slide is engaged with the second rail. The first locking plate protrudes from one end of the first rail and is connected with a first right plate of the movable lug. The second locking plate protrudes from one end of the second rail and is connected with a second left plate of the movable lug. 
         [0012]    The assistance device is cooperated with the movable lug and supports the equipment so that the equipment is not tilt because of the deformation of the movable lug due to the weight of the equipment. 
         [0013]    The present invention further provides an assistance device for replacing an equipment connected to a rack, the assistance device comprising a first hinge, a second hinge, a first rail, a second rail, and a tray. The first hinge having a first left plate which is adapted to be fixed to an equipment, a first right plate which is adapted to be fixed to a rack or the assistance device, the first right plate pivotably connected to the first left plate. The second hinge having a second left plate which is adapted to be fixed to the rack or the assistance device, a second right plate which is adapted to be fixed to the equipment, the second right plate pivotably connected to the second left plate. The first rail fixed to the rack, a first locking plate protruding from an end of the first rail and being connected with the first right plate. The second rail located corresponding to the first rail and fixed to the rack, a second locking plate protruding from an end of the second rail and connected with the second left plate. The tray having a first slide and a second slide, the first slide engaged with the first rail and the second slide engaged with the second rail. 
         [0014]    Preferably, the first left plate has an elongate hole and the first right plate has multiple locking holes. The second left plate has multiple locking holes and the second right plate has an elongate hole. By the cooperation between the slots and the locking holes, the connection is more easily. 
         [0015]    Preferably, the first locking plate has a first connection portion which has a first slot. The second locking plate has a second connection portion which has a second slot. By the first and second slots, the connection between the first locking plate and the first rail, and the connection between the second locking plate and the second rail are more easily. 
         [0016]    Preferably, the first rail is connected to a first positioning member and the second rail is connected to a second positioning member. The first positioning member is located corresponding to the first locking plate and has a first rail securing member and a first rack securing member. The first rail securing member is connected to the first rack securing member. The second positioning member is located corresponding to the second locking plate and has a second rail securing member and a second rack securing member. The second rail securing member is connected to the second rack securing member. By the first positioning member and the second positioning member, the first and second rails are more securely connected to the rack. 
         [0017]    Preferably, the tray has at least one through hole so that the user can lift the equipment via the through hole, the through hole also assist the heat dissipation. 
         [0018]    The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]      FIG. 1  is a perspective view to show an equipment connected to a conventional rack; 
           [0020]      FIG. 2  is a perspective view to show the movable lugs of the present invention connected to an equipment; 
           [0021]      FIG. 3  shows the movable lugs and the assistance device of the present invention connected to an equipment; 
           [0022]      FIG. 4  shows the movable lugs of the present invention connected to the rack; 
           [0023]      FIG. 5  is an exploded view to show the movable lugs and the assistance device of the present invention; 
           [0024]      FIG. 6  is an enlarged view to show the connection of the tray, the first slide, the first slide, the first top plate; 
           [0025]      FIG. 7  shows that the equipment is connected to the rack by the movable lugs and the assistance device of the present invention, and 
           [0026]      FIGS. 8 and 9  show that the operation of the assistance device of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0027]    Referring to  FIGS. 2 to 5 , the movable lug  10  of the present invention is used to connect an equipment D to a rack E or an assistance device F, wherein the movable lug  10  comprises a first hinge  11  and a second hinge  12 . 
         [0028]    The first hinge  11  has a first left plate  111  and a first right plate  112  which is pivotably connected to the first left plate  111 . The first left plate  111  is fixed to the equipment D by at least one locking member. The first right plate  112  is fixed to the rack E or the assistance device F by at least one locking member. The second hinge  12  has a second left plate  121  and a second right plate  122  which is pivotably connected to the second left plate  121 . The second left plate  121  is fixed to the rack E or the assistance device F by at least one locking member. The second right plate  122  is fixed to the equipment D by at least one locking member. 
         [0029]    The first right plate  112  and the second left plate  121  are able to respectively rotated relative to the first left plate  111  and the second right plate  122 , so that when removing the locking members of the first right plate  112  and the second left plate  121 , the equipment D can be moved backward so that the cables on the front of the equipment D cannot interfere the movement of the equipment D. 
         [0030]    As shown in  FIG. 5 , the first left plate  111  has an elongate hole  1111  and the first right plate  112  has multiple locking holes  1121 . The second left plate  121  has multiple locking holes  1211  and the second right plate  122  has an elongate hole  1221 . By the elongate holes  1111  and  1221 , the holes in the equipment D are easily connected to the first left plate  111  and the second right plate  122  without wasting time for aligning the holes. These locking holes  1121  and  1211  are used to be connected with the rack E or the assistance device F. 
         [0031]    The first left plate  111  is connected to a first top plate  113  and a first bottom plate  114 . The first top plate  113  has a locking hole  1131  and an elongate hole  1132 . The first bottom plate  114  has a locking hole  1141  and an elongate hole  1142 . The second right plate  122  is connected to a second top plate  123  and a second bottom plate  124 . The second top plate  123  has a locking hole  1231  and an elongate hole  1232 . The second bottom plate  124  has a locking hole  1241  and an elongate hole  1242 . The equipment D is connected to the first left plate  111  and the second right plate  122  easily without customized first and second hinges. 
         [0032]    As shown in  FIGS. 5 to 9 , the present invention further provides the assistance device F which is connected with the movable lugs  10 , and then connected to the rack E. The assistance device F comprises a first rail  21 , a second rail  22 , a tray  23 , a first locking plate  24  and a second locking plate  25 . The tray  23  supports the equipment D and both are moved backward when the movable lugs  10  are separated from the rack E by removing the locking members. 
         [0033]    The first rail  21  and the second rail  22  are connected to the rack E, and the second rail  22  is located corresponding to the first rail  21 . The tray  23  has a first slide  231  and a second slide  232 , wherein the first slide  231  is engaged with the first rail  21  and the second slide  232  is engaged with the second rail  22 , so that the tray  23  is moved back and forth as shown in  FIGS. 8 and 9 . The first locking plate  24  protrudes from one end of the first rail  21  and is connected with the first right plate  112  of the movable lug  10  by a locking member. The second locking plate  25  protrudes from one end of the second rail  22  and is connected with the second left plate  121  of the movable lug  10  by a locking member. 
         [0034]    By the cooperation of the movable lugs  10  and the assistance device F, the equipment D can be moved back and forth to be installed to the rack or to be removed from the rack. 
         [0035]    The first locking plate  24  has a first connection portion  241  which has a first slot  2411 . The second locking plate  25  has a second connection portion  251  which has a second slot  2511 . By the first and second slots  2411 ,  2511 , the positions of the first and second locking plates  24 ,  25  relative to the first and second rails  21 ,  22 , so that the first and second rails  21 ,  22  are able to be used for different racks E. 
         [0036]    Furthermore, the first rail  21  is connected to a first positioning member  26  and the second rail  22  is connected to a second positioning member  27 . The first positioning member  26  is located corresponding to the first locking plate  24 . The first positioning member  26  has a first rail securing member  261  and a first rack securing member  262 . The first rail securing member  261  is connected to the first rack securing member  262 . The second positioning member  27  is located corresponding to the second locking plate  25 . The second positioning member  27  has a second rail securing member  271  and a second rack securing member  272 . The second rail securing member  271  is connected to the second rack securing member  272 . By the first and second positioning members  26 ,  27 , the rails are more securely connected to the rack E such that the tray  23  moves smoothly. 
         [0037]    Besides, the tray  23  has at least one through hole  233  through which the user&#39;s fingers may extend and lift the equipment D, so that the equipment D is easily grabbed and the at least one through hole  233  also enhances the heat dissipating feature. 
         [0038]    While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.