Abstract:
An anti-data theft structure in an electronic device includes a second cover, a printed circuit board (PCB), a connector, a plurality of terminals, and an elastic element. The PCB includes a first press piece. The connector is rotatably coupled to the second cover and defines a plurality of slots facing PCB. A number of terminals are received in the slots according to a predetermined order. The elastic element is located between the connector and the second cover. When the first press piece resists against connector, the terminals are electrically coupled to the PCB to allow normal working When the first press piece is separated from the connector, the connector is rotated away under the elastic force to cause the terminals to fall from the slots. Reassembly of the connector contacts so as not to be in the predetemined order causes lockdown and lockout of the electronic device.

Description:
FIELD 
       [0001]    The subject matter herein generally relates electronic device security. 
       BACKGROUND 
       [0002]    Electronic devices often store classified technical information. When the electronic device is sold or stolen, disassembly of the electronic device can be done by an unauthorized person. The unauthorized person can falsify the system and even steal the technical information. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]    Implementations of the present technology will now be described, by way of example only, with reference to the attached figures, wherein: 
           [0004]      FIG. 1  is an exploded view of an electronic device with anti-data theft structure. 
           [0005]      FIG. 2  is an exploded view of the electronic device of  FIG. 1  viewed from another angle. 
           [0006]      FIG. 3  is an enlarged view of circle IV of  FIG. 1 . 
           [0007]      FIG. 4  is an enlarged view of circle III of  FIG. 2 . 
           [0008]      FIG. 5  is an enlarged view of circle V of  FIG. 2 . 
           [0009]      FIG. 6  is a partial cross-sectional view of the electronic device with anti-theft structure. 
       
    
    
     DETAILED DESCRIPTION 
       [0010]    It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein. However, it will be understood by those of ordinary skill in the art that the exemplary embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the exemplary embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts have been exaggerated to better illustrate details and features of the present disclosure. 
         [0011]    Several definitions that apply throughout this disclosure will now be presented. 
         [0012]    The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like. 
         [0013]    The present disclosure is described in relation to anti-data theft structures and electronic device with the same. 
         [0014]      FIG. 1  illustrates that an electronic device  100  includes a first cover  10 , a second cover  20  opposite to the first cover  10 , a printed circuit board (PCB)  30 , and a connector  40 . The electronic device  100  has the capability to prevent unauthorized persons resetting the system of the electronic device  10  or stealing data after disassembling the electronic device  100 . The first cover  10  is detachably coupled to the second cover  20  and forms a receiving chamber with the second cover  20 . The PCB  30  is received in the receiving chamber and located on an inner surface of the first cover  10 . The connector  40  is rotatably coupled to the second cover  20 . An elastic element  50  is located between the connector  40  and the second cover  20 . When the first cover  10  is assembled to the second cover  20 , the PCB  30  resists against connector  40  to rotate the connector  40  with respect to the second cover  20 , and to rotatably compress the elastic element  50 . When the first cover  10  and the second cover  20  are disassembled, the PCB  30  is separated from the connector  40 , and the connector  40  will rotate to its original position under the elastic force. In the exemplary embodiment, the elastic element  50  is a torsion spring. 
         [0015]      FIGS. 2-3  illustrate that the PCB  30  is mounted on the first cover  10  by screws  70 . A plurality of pads  31  and a first press piece  32  are located on a surface of the PCB  30  corresponding to the connector  40 . The plurality of pads  31  are electrically coupled to the connector  40 . The first press piece  32  resists against connector  40  to rotate the connector  40  with respect to the second cover  20 . The first press piece  32  includes a connecting post  321  and a flange  322  defined on the connecting post  321 . The connecting post  321  perpendicularly extends from the PCB  30  to the connector  40 . The flange  322  includes a first matching surface  3221  corresponding to the connector  40 . In the exemplary embodiment, the first matching surface  3221  is a spiral shape and the connecting post  321  is the center of the spiral. The first matching surface  3221  is a first spiral face spiraling in a first direction, which is formed by the flange  32  and the connector  40 , centered on the connecting post  321 . A helix of the first spiral face spirals away from the connector  40 . 
         [0016]      FIGS. 4-5  illustrate that the connector  40  can be electrically coupled to the PCB  30  and the combination enables control signals to make the electronic device  100  work. The connector  40  includes a main body  41  and a shaft  42  extending from a center of the main body  41 . The main body  41  includes a first surface  411  and a second surface  412  opposite to the first surface  411 . The first surface  411  faces the PCB  30 , and the second surface  412  faces the second cover  20 . The shaft  42  is located on the second surface  412  of the main body  41 . 
         [0017]    A plurality of slots  413  and a second press piece  414  are defined on the first surface  411 . The plurality of slots  413  has a one-to-one correspondence with the plurality of pads  31 . Each of the slots  413  is a spherical recess. A plurality of terminals  60  are located in the plurality of slots  413 . In the exemplary embodiment, at least one slot  413  is set to receive at least of the terminals  60 , the number of terminals  60  being less than the number of slots  413 . The terminals  60  are metal balls and partially received in their slots  413 . When the main body  41  is shaken, the terminals  60  fall out from the slots  413 . The second press piece  414  corresponds to the first press piece  32 . A center line of the second press piece  414  is same as center line of the shaft  42 , which is perpendicular to the main body  41 . The second press piece  414  engages with the first press piece  32  to rotate the connector  40  with respect to the second cover  20 . The second press piece  414  defines a hole  4141  extending from the second surface  412  to the first surface  411 . A second matching surface  41411  is formed on the outer surface of the hole  4141 . The second matching surface  41411  is a spiral shape, the hole  4141  being the center of the spiral. The second matching surface  41411  forms a second spiral face in a second direction opposite to the first direction, the hole  4141  being the center of the second spiral. A helix of the second spiral face spirals away from the PCB  30 . When the first matching surface  3221  engages with the second matching surface  41411 , the main body  41  is rotated around the shaft  42  by the engagement of the first matching surface  3221  and the second matching surface  41411 . The second surface  412  defines a recess  4121  and a pair of projecting portions  4122 . The two projecting portions  4122  are symmetrical to the center line of the shaft  42 . The elastic element  50  comprises a first end  51  and a second end  52  opposite to the first end  51 . 
         [0018]    The second cover  20  includes a base  21  and two symmetrical supporting portions  22  surrounding the base  21 . The base  21  is located in a middle position between the two supporting portions  22 . The base  21  is a pillar and defines an axle hole  211 . The shaft  42  is received in the axle hole  211 . The supporting portions  22  support the main body  41 , and the two projecting portions  4122  respectively contact the second surfaces of the supporting portions  22 . The two projecting portions  4122  reduce a frictional force generated by a rotation of the main body  41  relative to the supporting portion  22 . One of the supporting portions  22  includes a stopper  221  to stop excessive rotation by the main body  41 . 
         [0019]      FIG. 6  illustrates that, in assembly, the shaft  42  of the connector  40  is inserted into the axle hole  211 , and the two projecting portions  4122  respectively contact second surfaces of the supporting portions  22 . The elastic element  50  is located between the main body  41  and the second cover  20 . The first end  51  of the elastic element  50  is inserted into the recess  4121 , and the second end  52  of the elastic element  50  resists one of the supporting portions  22 . The terminals  60  are set in partial slots  413 , which is in a predetermined positional relationship. When the first cover  10  is closed against the second cover  20 , the first press piece  32  resists against second press piece  414  and the first matching surface  3221  engages with the second matching surface  41411 , to rotate the main body  41  around the shaft  42 . The elastic element  50  stores elastic force when the main body  41  is rotated. When the first cover  10  is latched with the second cover  20 , the first press piece  32  engages with the second press piece  414  to contain the elastic force, and the terminals  60  on the main body  41  are electrically coupled to the pads  31  of the PCB  30 . The PCB  30  produces first control signals to make the electronic device  100  work. 
         [0020]    When an unauthorized person disassembles the first cover  10  from the second cover  20 , the PCB  30  is detached from the main body  41 , and the first press piece  32  is separated from the second press piece  414 . The main body  41  rotates to original position under the elastic force until the main body  41  is stopped by the stopper  221 . The terminals  60  fall from the slots  413 . An unauthorized person does not know the predetermined positional relationship between each of the terminals  60  and each slot  413 . If the positional relationship between the terminals  60  and the slots  413  is changed, the PCB produces second control signals. Since the unauthorized person does not know the original positions of the terminals  60 , it is highly probable that the second control signals are different from the first control signals. A processor (not shown) in the PCB  30  compares the second control signals with the first control signals. When the second control signals are different from the first control signals, the processor locks down the electronic device  100  and prevents it from working, which avoids the resetting of the electronic device  10 . 
         [0021]    The number of terminals  60  and slots  413  can be increased to increase the probability of creating differences between the first and the second control signals. 
         [0022]    The projecting portions  4122  of the second surface  412  can reduce a frictional force made by a rotation of the main body  41  with respect to the supporting portions  22 . The main body  41  is rotated to original position via the elastic element  50  and the stopper  221 , which makes the terminals  60  fall from the slots  413 . Thus, the unauthorized person does not know the original positions of the terminals  60 . 
         [0023]    The exemplary embodiments shown and described above are only examples. Many details are often found in the art such as the other features of an anti-data theft structure and electronic device with the same. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, especially in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the exemplary embodiments described above may be modified within the scope of the claims.