TWI555903B - Anti-tampering of electronic seals - Google Patents

Description

Tamper-proof electronic seal

The present invention provides a tamper-resistant electronic seal, and more particularly, a special technique for thieves to cut internal circuitry when grinding the diameter of the plug cap.

The first figure discloses a conventional electronic seal 90 composed of a plug 91 and a socket 92. The plug 91 has an RFID chip therein, and the plug 92 is provided with an internal antenna, and the plug 91 is inserted into the plug 92. By locking the door latch 93, the container door 94 can be locked, and the RFID chip is electrically connected to the internal antenna of the socket 92, and the plug 91 forms an external antenna. At this time, the customs can transmit an electromagnetic wave to the external antenna by an identification host, and the RFID chip can convert the energy provided by the electromagnetic wave into a voltage, and use the voltage to modulate the identification code stored in the RFID chip into an electromagnetic wave. Then, the external antenna is transmitted, so that the identification host can obtain the identification code after receiving the identification electromagnetic wave and demodulate it, and obtain the identity of the container according to the identification code, thereby achieving the function of automatic identification and management. In addition, when the thief wants to steal the internal cargo of the container and cut the plug 91, the customs identification host can also realize the alarm function by recognizing the electromagnetic wave.

However, a thief finds that the diameter of the cap 911 of the plug 91 is ground to a pinhole 9 smaller than the bolt 93 by the grinder 95 as shown in the second figure. 31, so that the internal circuit operation of the electronic seal 90 is not destroyed, and then the plug 91 is pulled out by the bolt hole 931, and then the container door can be opened for theft. After theft, the plug 91 only needs to be reversed. The insertion of the bolt hole 931 causes the bolt seat 92 to be buckled on the bolt 93, so that the electronic seal 90 can operate normally as before, and the customs identification host has no alarm.

In view of this, the present inventors have developed this invention with years of professional experience and experience, through continuous conception and research.

The present invention provides a tamper-resistant electronic seal, the main improvement of which is a plug, the plug includes at least: a conductive plug body having a shaft and a radial extension to the top of the shaft a cap head, a through hole penetrating the shaft and the cap, and a first engaging arrangement mounted on the bottom edge of the shaft; the top edge of the bore has a countersink having a larger inner diameter, the countersink The inner diameter is not less than the inner diameter of the bolt hole of the door bolt, and the top end is closed by an upper cover. The outer circumference of the bolt is formed with a plastic waterproof cover capable of covering the upper cover; and a circuit board mounted on the hole has a control loop. The control circuit is composed of a circuit wiring, a contact under the communication circuit wiring, a contact on the communication circuit wiring, and an RFID chip mounted on the circuit wiring; the circuit board is further mounted under the hole. The third buckle of the hole, and a spring piece at the top end of the bottom of the countersunk hole, and a spring piece abutting on the bottom surface of the upper cover for elastically suspending the circuit board in the hole and controlling The contact cannot be electrically connected to the top cover, but in the first When a snap fit is inserted into the socket and cannot be disengaged, the lower contact can be raised The RFID chip is electrically connected to the internal antenna of the socket, and the upper contact is moved up and electrically connected to the upper cover, so that the plug body forms an external antenna of the RFID chip.

With the above configuration, the thief can surely cut off the internal circuit when grinding the diameter of the plug cap, so that the electronic seal still has the existing alarm function, thereby improving the misjudgment of the traditional electronic seal being deceived. It does provide an innovative technology for the effective prevention of electronic seals.

A‧‧‧ plug

B‧‧‧ pedestal

B1‧‧‧Second snap configuration

B2‧‧‧Internal antenna

B3‧‧‧Second Card Department

C‧‧‧door bolt

C1‧‧‧Bolt hole

10‧‧‧ 栓 body

11‧‧‧ shaft

12‧‧‧ hat head

13‧‧‧ hole

13A‧‧‧ Shentou

13B‧‧‧Positioning

14‧‧‧ collar

15‧‧‧Upper cover

16‧‧‧First snap configuration

17‧‧‧Waterproof case

171‧‧‧ First card department

20‧‧‧ boards

21‧‧‧Link hole

22‧‧‧neck

23‧‧‧Control loop

231‧‧‧Circuit wiring

232‧‧‧Contacts

233‧‧‧Contacts

234‧‧‧RFID chip

235‧‧‧Battery

30‧‧‧ inner rod

31‧‧‧ Linked Column

32‧‧‧Second buckle

321‧‧‧Shear

322‧‧‧Upper film

33‧‧‧ Third buckle

331‧‧‧ slots

90‧‧‧Electronic seal

91‧‧‧plug

911‧‧‧ hat head

92‧‧‧ pedestal

93‧‧‧door bolt

931‧‧‧Bolt hole

94‧‧‧ container door

95‧‧‧ Grinder

The first figure is a schematic diagram of the implementation of the conventional electronic seal.

The second picture is a schematic diagram of the action of cracking the conventional electronic seal.

The third figure is an exploded schematic view of the present invention.

The fourth figure is a three-dimensional combination diagram of the inner rod and the circuit board of the present invention.

The fifth figure is a schematic view of the position of the plug and the socket in the separated state of the present invention.

The sixth figure is a schematic cross-sectional view of the fifth figure.

The seventh figure is a schematic cross-sectional view of the plug of the present invention inserted into the plug hole and the plug seat.

The eighth figure is a schematic diagram of the anti-theft implementation of the present invention.

Please refer to the third to eighth figures. The present invention is an electronic seal composed of a plug A and a socket B. The plug A can be inserted from the upper and lower plugs B to lock the bolt C for locking the container door. The plug B and the door latch C are all existing technologies, and the present invention is not described. The present invention is characterized by a plug A, and the plug A includes at least: An electrically conductive plug body 10 having a shaft 11 , a cap 12 radially outwardly extending from the top end of the shaft 11 , and a bore 13 extending axially through the shaft 11 and the cap 12 a sleeve 14 that fits around the outer periphery of the shaft 11 and abuts against the bottom end of the cap head 12, the diameter of the cap head 12 is greater than the inner diameter of the bolt hole C1 of the bolt C so as to be able to abut against the bolt C The top edge of the hole 13 has a countersunk hole 13A having a larger inner diameter, so that the inner diameter of the countersunk hole 13A is not smaller than the inner diameter of the bolt hole C1, so that the first buckle portion of the plug body 10 is formed. The top edge of the 13D of the Shentou point has a positioning hole 13B having a larger inner diameter, and the positioning hole 13B can be closed by an upper cover 15 which is mounted with a first engaging arrangement 16 on the outer periphery of the bottom edge; 10, a plastic waterproof cover 17 capable of covering the collar 14 and the upper cover 15 is formed on the outer periphery, and the plug body 10 is placed in the insertion bolt hole C1 of the diameter of the collar 14 which can be statically matched, so that the container truck is traveling. During the process, the socket B does not shake the collision container door to ensure the overall service life and performance; the waterproof sleeve 17 further protrudes downward along the outer circumference of the bolt body 10 with the first latch portion 17 1; a long strip circuit board 20, which is mounted in the hole 13 and has a connecting hole 21 extending through the left and right sides, and the bottom edge has a neck portion 22 which is tapered downward, and a control loop is provided on the surface. 23, the control circuit 23 has a circuit wiring 231, a contact circuit 231 under the contact 232, a communication circuit wiring 231 upper contact 233, an RFID chip 234 assembled in the circuit wiring 231, an RFID chip can be supplied The 234 power supply battery 235 is formed, the lower contact 232 is located on the bottom surface of the neck portion 22, and the upper contact 233 is located at the top of the circuit board 20; An insulated inner rod 30 having a connecting post 31 for mounting the connecting hole 21 of the circuit board 20 for allowing the circuit board 20 to be disposed in the bore 13 through the inner rod 30, and has a connection a second fastening portion 32 on the top edge of the inner rod 30, and a third fastening portion 33 disposed at the bottom end of the inner rod 30; the second fastening portion 32 is formed by two forks extending downwardly downwardly from the elastic piece 321 and an upward direction. The upper elastic piece 321 is configured to be abutted against the bottom end of the countersunk hole 13A for being buckled into the first buckle portion, and the upper elastic piece 322 is elastically abutted against the bottom surface of the upper cover 15 The lower elastic piece 321 and the upper elastic piece 322 can elastically suspend the inner rod 30 and the circuit board 20 in the hole 13 to limit the inner rod 30 and the circuit board 20 from being removed from the bottom end of the hole 13 at the same time, the circuit board The upper contact 233 of the 30 is located at the bottom edge of the upper elastic piece 322 so that it cannot be electrically connected to the upper cover 15, so that the plug body 10 does not form an external antenna electrically connected to the RFID chip 234; and the third buckle portion 33 is Located below the aperture 13 , the outer diameter of the aperture 13 is larger than the aperture 13 so that the third buckle 33 can limit the inner rod 30 and the circuit board 20 when the upper cover 15 is damaged. 13 emerge from the top receiving aperture, the third fastening portion 33 further is provided with slots 331 for fitting the neck portion 22, the contact 232 and the bottom surface 33 to protrude slightly so that the third fastening portion.

Please cooperate with the fifth, sixth and seventh diagrams, insert the bolt C hole C1 and the bolt base B in the lower half of the plug A, and make the first engagement arrangement 16 and the second of the socket B. The engagement configuration B1 is positioned and cannot be disengaged, and is used to lock the door latch C and lock the container door. Before this, the third fastening portion 33 can press the internal antenna B2 of the bolt base B to be elastically deformed, so that the lower contact point 232 is resisted. Connect the internal antenna B2, order The RFID chip 234 can be electrically connected to the internal antenna B2 inside the socket B, and can overcome the upper elastic piece 322 to push the inner rod 30 and the circuit board 20 upward by a set distance, so as to provide a predetermined elastic force for the lower contact 232. The internal antenna B2 can be more stably contacted, and the upper contact 233 can be moved up and electrically connected with the upper cover 15 to electrically connect the plug body 10 and the RFID chip 234 to form an external antenna for forming an electronic device. The use mode of the seal; at the same time, the bolt B further has a second latching portion B3 matching the first latching portion 171, so that the plug A cannot be rotated after inserting the bolt seat B, thereby ensuring the lower joint Point 232 can stably abut inner antenna B2.

Please cooperate with the seventh and eighth diagrams, which means that when the thief grinds the diameter of the cap 12 of the plug A to be smaller than the bolt hole C1, the countersunk head 13A of the present invention is completely destroyed, and the upper cover 15 is automatically disengaged. The plug A, thereby interrupting the electrical connection between the upper contact 233 and the upper cover 15, prevents the plug body 10 from forming an external antenna of the RFID chip 234, and more importantly, the upper cover 15 releases the upper elastic piece 322 and applies the lower contact 232 to contact the internal antenna. The preloading action of B2 cooperates with the elastic recovery of the internal antenna B2, so that the third fastening portion 33 can interrupt the electrical connection between the lower contact 232 and the internal antenna B2, so that the external antenna or the internal antenna B2 cannot receive the identification. The electromagnetic wave emitted by the host computer does not emit the identification electromagnetic wave set by the RFID chip 234, and can effectively identify the place where the host is located (for example, customs), so as to achieve better automatic identification and management.

Specifically, the present invention only needs to directly rive or screw the second fastening portion 32 shown in the third and fourth figures to the top edge of the circuit board 20, and the third The buckle portion 33 is directly fixed to the bottom end of the circuit board 20, that is, the arrangement of the inner rod 30 can be simplified, which is also the present invention.

In summary, when the thief is grinding the diameter of the plug cap, the invention can surely cut off the internal circuit, so that the electronic seal still has the existing alarm function, which is a highly creative concept, and should be patented. Apply for the requirements and apply in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the equivalent variations and modifications of the scope of the present invention should still be within the scope of the present invention.

A‧‧‧ plug

B‧‧‧ pedestal

B1‧‧‧Second snap configuration

B2‧‧‧Internal antenna

10‧‧‧ 栓 body

11‧‧‧ shaft

12‧‧‧ hat head

13‧‧‧ hole

13A‧‧‧ Shentou

13B‧‧‧Positioning

14‧‧‧ collar

15‧‧‧Upper cover

16‧‧‧First snap configuration

17‧‧‧Waterproof case

20‧‧‧ boards

231‧‧‧Circuit wiring

232‧‧‧Contacts

233‧‧‧Contacts

234‧‧‧RFID chip

235‧‧‧Battery

321‧‧‧Shear

322‧‧‧Upper film

Claims (6)

The utility model relates to a tamper-proof electronic seal, which is composed of a plug bolt and a bolt seat. The plug bolt can lock the bolt hole of the bolt from the upper and lower plug sockets, and the plug bolt at least comprises: a conductive a bolt body having a shaft, a cap that radially expands to the top of the shaft, a bore extending through the shaft and the cap, and a first snap fit mounted to the bottom edge of the shaft; The top edge of the hole has a countersunk hole having a larger inner diameter, and the inner diameter of the countersunk hole is not less than the inner diameter of the bolt hole of the door bolt, and the top end is closed by an upper cover, and the outer periphery of the plug is formed with a cover capable of covering the outer cover. a plastic waterproof sleeve; and a circuit board mounted on the hole, having a control loop, the control loop is connected by a circuit wiring, a contact under the wiring of the connecting circuit, a contact on the wiring of the connecting circuit, and a mounting The circuit chip is composed of an RFID chip; the circuit board is further provided with a third buckle portion having a larger hole than the hole, and a spring piece abutting the bottom end of the countersink hole is attached at the top end, and a bottom surface of the upper cover is abutted Upper elastic piece for elastically suspending the circuit board in the hole and controlling the upper contact point The electrical connection cannot be made to the upper cover. However, when the first engagement arrangement is inserted into the socket and cannot be disengaged, the lower contact can provide an electrical connection between the RFID chip and the internal antenna of the socket, and the upper contact is moved up and the upper cover is electrically connected. The connection is such that the plug body forms an external antenna of the RFID chip. The tamper-proof electronic seal of claim 1, wherein the lower contact portion slightly protrudes from the bottom surface of the third buckle portion, and the third buckle portion can press the elastic deformation of the internal antenna of the bolt seat when the first engagement configuration is inserted into the bolt seat. Only when the lower contact abuts the internal antenna, but when the diameter of the cap is ground to be smaller than the bolt hole, the upper cover interrupts the electrical connection with the upper contact, and releases the upper elastic piece to apply the lower contact to contact the internal antenna for preloading. The function, combined with the elastic recovery of the internal antenna, enables the third buckle to interrupt the electrical connection between the lower contact and the internal antenna. The tamper-resistant electronic seal of claim 2, wherein the bottom edge of the circuit board has a necked portion that tapers downward, and the lower contact point is disposed at a bottom end of the neck portion. The tamper-proof electronic seal of claim 1 or 2, wherein the outer sleeve of the shaft is sleeved with a ring, the loop is abutted against the bottom end of the cap, and is covered by the waterproof sleeve, and the plug body is Located in the diameter of the collar, it can be inserted into the bolt hole of the bolt. The tamper-proof electronic seal of claim 1 or 2, wherein the circuit board is further provided with an insulating inner rod, wherein the upper elastic piece, the lower elastic piece and the third fastening part are disposed on the inner rod, and the third buckle part is further There is a slot for the lower contact to pass through. The tamper-proof electronic seal of claim 1 or 2, wherein the waterproof sleeve is provided with a first latching portion, and the plug has a second latching portion matching the first latching portion for the plug It cannot rotate after inserting the socket.