Abstract:
An electronic device includes a chassis and a tray installed in the chassis. The tray includes a base plate which defines an opening. A limiting standoff protrudes from an inner surface of the chassis and extends through the opening of the base plate. A locking module includes a pivotable member pivotally attached to the base plate which rotates about an axis perpendicular to the base plate. When the pivotable member is rotated to a first position, the limiting standoff locks the pivotable member to prevent the tray from sliding out from the chassis. When the pivotable member is rotated to a second position, the limiting standoff unlocks the pivotable member to allow the tray sliding out from the chassis.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to electronic devices, and particularly to an electronic device configured with a tray. 
         [0003]    2. Description of Related Art 
         [0004]    Electronic devices, such as blade servers, are oftentimes configured with multiple trays for housing hardware components, such as system boards and storage devices. Users can replace hardware components in the trays or add new hardware components into the trays by accessing the trays. However, the trays are oftentimes fixed firmly in the chassis by securing means such as screws, such securing means may be difficult for the users to access the trays without extra tools and/or special equipment. 
         [0005]    With the above described disadvantages in view, there is a need to provide an electronic device which allows the user to access the trays much more easily. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    Many aspects of the 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 embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
           [0007]      FIG. 1  is an exploded, isometric view of an electronic device in accordance with an embodiment. 
           [0008]      FIG. 2  is a partially enlarged view of a tray of  FIG. 1 . 
           [0009]      FIG. 3  is an enlarged view of a locking module of  FIG. 1 . 
           [0010]      FIG. 4  is an assembled view of the electronic device of  FIG. 1 . 
           [0011]      FIG. 5  is similar to  FIG. 4 , but viewed from a different aspect, showing the tray in an unlocked position. 
       
    
    
     DETAILED DESCRIPTION 
       [0012]    The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one”. 
         [0013]    Referring to  FIG. 1 , an electronic device in accordance with an embodiment is shown. The electronic device includes a chassis  10 , a tray  20 , and a locking module  80 . The chassis  10  includes a base plate  12  and two side plates  14 . The two side plates  14  are perpendicular to the base plate  12  and connected to two opposite sides of the base plate  12 . At least one limiting standoff  141  protrudes from an inner surface of each of the two side plates  14 . The limiting standoff  141  is adjacent to the base plate  12  and adjacent to a front side edge of the side plate  14 . 
         [0014]    Referring to  FIG. 2 , the tray  20  includes a base plate  22  and two side plates  24 . The two side plates  24  are perpendicular to the base plate  22 . The distance between the two side plates  24  of the tray  20  is substantially the same as the distance between the two side plates  14  of the chassis  10 . An L-shaped connecting border  26  interconnects the base plate  22  and each of the two side plates  24 . An opening  261  is defined at the front side of the connecting border  26 . A securing hole  221  is defined in the base plate  22  of the tray  20 . Two securing posts  222  protrude upwardly from the base plate  22  of the tray  20 . The securing hole  221  is located between the opening  261  and the two securing posts  222 . The securing hole  221  and the two securing posts  222  are arranged in a line perpendicular to the side plate  24 . Two blocking pieces  223  are punched out of the base plate  22 . The two blocking pieces are located behind the two securing posts  222 . One of the two blocking pieces  223  is perpendicular to the side plate  24  and the other one of the blocking pieces  223  is slanted to the side plate  24 . Two L-shaped hook pieces  224  obliquely extend from the base plate  22 . The two hook pieces  224  are arranged in a line parallel to the side plate  24  and have the same orientation. Two buckling pieces  225 , a first limiting piece  226 , and a second limiting piece  227  are also punched out of the base plate  22 . The two buckling pieces  225  are located at two opposite sides of an anterior one of the two hook pieces  224 . Each of the two buckling pieces  225  defines an opening  2251 . The first limiting piece  226  is located in front of the right securing post  222  and perpendicular to the side plate  24 . The second limiting piece  227  is located at the front right side of the right buckling piece  225  and is perpendicular to the first limiting piece  226 . 
         [0015]    Referring to  FIG. 3 , the locking module  80  includes a securing member  30 , a pivotable member  40 , a driving member  50 , a resisting member  60 , and a resilient member  70 . The pivotable member  40  includes a horizontal main body  41 , an extending portion  42 , and a securing portion  43 . The extending portion  42  extends laterally from one end of the main body  41  and the securing portion  43  extends from the other end of the main body  41 . The securing portion  43  defines a securing hole  431 . The securing portion  43  includes a first resisting tab  433  and a second resisting tab  435 . A U-shaped cutout  437  is defined between the first resisting tab  433  and the second resisting tab  435 . An L-shaped cutout  44  is defined at the exterior side of the joint portion of the main body  41  and the extending portion  42 . 
         [0016]    The driving member  50  includes a securing piece  52  and a resilient arm  54 . The resilient arm  54  extends from the securing piece  52 . Two mounting holes  521  are defined in a securing post  222  responding to the securing piece  52 . The securing piece  52  is rectangular. The resilient arm  54  extends from a corner of the securing piece  52 . A resisting portion  541  is located on a free distal end of the resilient arm  54 . The resisting portion  541  forms a loop. The driving member  50  is made from resilient materials and is elastically deformable. 
         [0017]    The resilient member  70  includes a main body  72  and a resilient lever  74 . The resilient lever  74  extends from the main body  72 . The main body  72  includes a mounting piece  721  and two securing arms  723 . The two securing arms  723  are arranged at two opposite sides of the mounting piece  721 . The two securing arms  723  are symmetrical. A gap is defined between the mounting piece  721  and each of the two securing arms  723 . The mounting piece  721  defines a securing opening  7211  and a cutout  7213 . The cutout  7213  is defined at an end of the mounting piece  721 . The cutout  7213  is U-shaped. The width of the cutout  7213  and the width of the securing opening  7211  are substantially equal to the width of the hook piece  224 . A hook portion  7231  protrudes outwardly from an end of each of the two securing arms  723 . The hook portion  7231  extends through the opening  2251  of the buckling piece  225  of the tray  20 . The resilient lever  74  includes a horizontal shaft  741 , a connecting shaft  742 , and an acting shaft  743 . The horizontal shaft  741  extends laterally from a corner of the main body  72 . The connecting shaft  742  extends from the horizontal shaft  741  and is connected to the acting shaft  743 . The connecting shaft  742  includes an L-shaped bent portion which enhances the resilience of the connecting shaft  742 . The acting shaft  743  is perpendicular to the horizontal shaft  741 . A resisting piece  745  protrudes from a free end of the acting shaft  743 . The resisting piece  745  defines two mounting holes  7451 . The resisting member  60  defines two mounting holes  61  corresponding to the two mounting holes  7451  of the resisting piece  745 . Two mounting members  90  are inserted into the two mounting holes  7451  of the resisting piece  745  and the two mounting holes  61  of the resisting member  60 , thereby mounting the resisting member  60  to the resisting piece  745 . The thickness of the resisting member  60  and the thickness of the resisting piece  745  are substantially equal to the thickness of the pivotable member  40 . 
         [0018]    Referring to  FIGS. 4 and 5 , in assembly, the tray  20  is slid along the base plate  12  of the chassis  10  and is moved into the chassis  10 . The two side plates  24  of the tray  20  contact the inner surfaces of the two side plates  14  of the chassis  10 . The limiting standoff  141  of the chassis  10  is inserted into the opening  261  of the tray  20 . The securing hole  431  of the pivotable member  40  is aligned with the securing hole  221  of the tray  20 . The securing member  30  is inserted into the securing hole  431  of the pivotable member  40  and the securing hole  221  of the tray  20 , thereby mounting the pivotable member  40  to the base plate  22  of the tray  20 . The securing post  222  of the tray  20  is aligned with and inserted into the mounting hole  521  of the driving member  50 . The driving member  50  is mounted to the base plate  22  of the tray  20  by riveting or other means. The resisting member  60  is secured to the resisting piece  745  of the resilient member  70  by the mounting member  90 . The rear one of the buckling pieces  224  is received in the securing opening  7211  of the resilient member  70 . The resilient member  70  is moved forward until the rear one of the two buckling pieces  224  is engaged with the securing opening  7211  and the anterior one of the two buckling pieces  224  is engaged with the cutout  7213  of the resilient member  70 . The hook portions  7231  of the two securing arms  723  are engaged with the openings  2251  of the two buckling pieces  225 . The resilient member  70  is secured to the base plate  22  of the tray  20 . Thus, the locking module  80  is secured to the base plate  22  of the tray  20 . 
         [0019]    When the locking module  80  is in a locked position as shown in  FIG. 4 , the first resisting tab  433  and the second resisting tab  435  are inserted into the opening  261  of the tray  20 . The limiting standoff  141  of the chassis  10  is received in the cutout  437  of the pivotable member  40  and abuts the front side edge of the first resisting tab  433 . The extending portion  42  of the pivotable member  40  is located between the main body  72  of the resilient member  70  and the resilient lever  74 . The resisting piece  745  of the resilient member  74  and the resisting member  60  are engaged with the cutout  44  of the pivotable member  40 , thereby preventing the pivotable member from rotating clockwise. The first limiting piece  226  abuts the interior side of the main body  41  of the pivotable member  40 , thereby preventing the pivotable member from rotating anticlockwise. The securing portion  43  of the pivotable member  40  abuts the resisting portion  541  of the driving member  50 . The resilient arm  54  of the driving member  50  is elastically deformed and moved backwards. The resilient arm  54  of the driving member  50  abuts the two blocking pieces  223  of the tray  20 . Thus, the limiting standoff  141  of the chassis  10  prevents the first resisting tab of the pivotable member  40  from moving forward, thereby preventing the tray  20  from moving out of the chassis  10 . 
         [0020]    Referring to  FIG. 5 , when pulling the tray  20  out of the chassis  10 , the resisting member  60  is biased to the right and the acting shaft  743  of the resilient lever  74  of the resilient member  70  is deformed to the right. The pivotable member  40  is disengaged from the resisting member  60  and the resisting piece  745 . The resilient arm  54  of the driving member  50  recovers and allows the pivotable member  40  to rotate clockwise. The first resisting tab  433  of the pivotable member  40  is rotated to a position in which the first resisting tab  433  does not interfere with the limiting standoff  141 . Then, the tray  20  is able to be pulled out of the chassis  10 . 
         [0021]    It is to be understood, however, that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.