Anti-tamper device

Abstract

An anti-tamper device for preventing data from being tampered with by an unauthorized person includes a top cover, a bottom cover, a printed circuit board (PCB), and a signal connector. The bottom cover is assembled to the top cover. The PCB has a plurality of terminal couplers. The signal connector is fastened to the top cover, and the signal connector defines a plurality of terminal grooves. At least one of the terminal grooves receives a terminal. When the terminals are electrically connected to the terminal couplers, a first relation signal is generated to enable the anti-tamper device. When the terminals are not connected to the corresponding terminal couplers, a second relation signal different from the first relation signal is generated by the PCB to make the anti-tamper device unable to work.

What is claimed is: 
     
       1. An anti-tamper device comprising:
 a top cover; 
 a bottom cover detachably connected to the top cover; 
 a printed circuit board (PCB) fixed on the bottom cover, the PCB having a plurality of terminal couplers; 
 a signal connector fastened to the top cover and located between the PCB and the top cover, the signal connector defining a plurality of terminal grooves; and 
 a plurality of terminals, a number of the terminals being less than or equal to a number of the terminal grooves, the terminals being received in the terminal grooves correspondingly and electrically coupled to the terminal couplers correspondingly; 
 wherein when the top cover is disconnected from the bottom cover, the signal connector is separated from the PCB, and the terminals drop from the terminal grooves, when the top cover is connected to the bottom cover again and the terminals are not received in the terminal grooves correspondingly, the terminals are not electrically connected to the terminal couplers correspondingly and the anti-tamper device is unable to work. 
 
     
     
       2. The anti-tamper device of  claim 1 , wherein when the terminals are electrically connected to the corresponding terminal couplers, a first relative signal is generated by the PCB to enable the anti-tamper device; when the terminals are not connected to the corresponding terminal couplers, a second relative signal different from the first relative signal is generated by the PCB to make the anti-tamper device be out of work. 
     
     
       3. An anti-tamper device comprising: a top cover; a bottom cover detachably connected to the top cover; a printed circuit board (PCB) fixed on the bottom cover, the PCB having a plurality of terminal couplers; a signal connector fastened to the top cover and located between the PCB and the top cover, the signal connector defining a plurality of terminal grooves; and a plurality of terminals, a number of the terminals being less than or equal to a number of the terminal grooves, the terminals being received in the terminal grooves correspondingly and electrically coupled to the terminal couplers correspondingly; wherein when the top cover is disconnected from the bottom cover, the signal connector is separated from the PCB, and the terminals drop from the terminal grooves, when the top cover is connected to the bottom cover again and the terminals are not received in the terminal grooves correspondingly, the terminals are not electrically connected to the terminal couplers correspondingly and the anti-tamper device is unable to work, wherein the signal connector comprises a supporting base, the plurality of terminal grooves are defined in a first surface of the supporting base facing the PCB, a receiving groove is defined in a second surface of the supporting base opposite to the first surface, a magnet is located in the receiving grooves to attract the terminals received in the corresponding terminal grooves when the signal connector is coupled to the PCB, and the magnet is taken out of the receiving groove before the top cover is connected to the bottom cover. 
     
     
       4. The anti-tamper device of  claim 1 , wherein a number of the terminals received in the corresponding terminal grooves is less than a number of the terminal grooves. 
     
     
       5. The anti-tamper device of  claim 1 , wherein a pair of first clamps projects from the top cover towards the PCB, a pair of second clamps projects from the second surface of the supporting base towards the top cover, the second clamps are engaged with the first clamps to fix the signal connector to the top cover. 
     
     
       6. The anti-tamper device of  claim 1 , wherein at least one locating protrusion is located on the first surface, at lease one locating hole is defined in the PCB corresponding to the locating protrusion, and the locating protrusion is inserted into the locating hole to make the signal connector be coupled to the PCB. 
     
     
       7. The anti-tamper device of  claim 1 , wherein an elastic piece is located in each of the terminal grooves and between the terminal and the signal connector, and the elastic piece is compressed by the corresponding terminal and the signal connector when the top cover is connected to the bottom cover. 
     
     
       8. The anti-tamper device of  claim 1 , wherein each of the terminals is a metal ball which is movably received in the terminal groove. 
     
     
       9. The anti-tamper device of  claim 1 , wherein a number of terminal couplers is the same with a number of terminal grooves, each of the terminal couplers comprises two apart metal pads, and each of the terminals is electrically connected with the two metal pads. 
     
     
       10. An anti-tamper device comprising: a top cover; a bottom cover detachably assembled to the top cover; a printed circuit board (PCB) received between the bottom cover and the top cover, the PCB having a plurality of terminal couplers; and a signal connector fastened to the top cover and located between the PCB and the top cover, the signal connector defined a plurality of terminal grooves, a first terminal groove of the terminal grooves receiving a terminal, and a corresponding one of the terminal couplers being electrically connected to the terminal; wherein when the top cover is disassembled from the bottom cover, the signal connector is separated from the PCB, and the terminal drops from the first terminal groove; when the top cover is assembled to bottom cover again and the dropped terminal is received in a second terminal groove of the terminal grooves, the corresponding terminal coupler is disconnected from the coupler, the anti-tamper device is out of work, wherein the signal connector comprises a supporting base, the plurality of terminal grooves are defined in a first surface of the supporting base facing the PCB, a receiving groove is defined in a second surface of the supporting base opposite to the first surface, a magnet is located in the receiving grooves to attract the terminals received in the corresponding terminal grooves when the signal connector is coupled to the PCB, and the magnet is taken out of the receiving groove before the top cover is connected to the bottom cover. 
     
     
       11. The anti-tamper device of  claim 10 , wherein the terminal grooves correspond to the terminal couplers, respectively, when the terminals are received in the terminal grooves, the terminals are electrically connected to the terminal couplers corresponding the terminal grooves. 
     
     
       12. The anti-tamper device of  claim 10 , wherein a pair of first clamps projects from the top cover towards the PCB, a pair of second clamps projects from the second surface of the supporting base towards the top cover, the second clamps are engaged with the first clamps to fix the signal connector to the top cover. 
     
     
       13. The anti-tamper device of  claim 12 , wherein at least one locating protrusion is located on the first surface, at lease one locating hole is defined in the PCB corresponding to the locating protrusion, and the locating protrusion is inserted into the locating hole to make the signal connector be coupled to the PCB. 
     
     
       14. The anti-tamper device of  claim 10 , wherein an elastic piece is located in each of the terminal grooves and between the terminal and the signal connector, and the elastic piece is compressed by the corresponding terminal and the signal connector when the top cover is connected to the bottom cover. 
     
     
       15. The anti-tamper device of  claim 10 , wherein each of the terminals is a metal ball which is movably received in the terminal groove. 
     
     
       16. The anti-tamper device of  claim 10 , wherein a number of terminal couplers is the same with a number of terminal grooves, each of the terminal couplers comprises two apart metal pads, and each of the terminals is electrically connected with the two metal pads.