Intelligent anti-disassembly bracelet
By using irregularly shaped screws to connect the anti-tamper mounting base and the cover, and by cutting off the alarm circuit design, the problem of easy disassembly of existing smart anti-tamper wristbands is solved, realizing safe detachability and alarm functions, which is suitable for the supervision of specific groups such as prisoners.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN 596 INTELLIGENT SENSE TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-07
AI Technical Summary
Existing smart anti-tamper bracelets have shortcomings in terms of anti-tampering. Magnetic buckle structures are easily disassembled in strong magnetic environments, and plastic buckle structures are inconvenient to disassemble and cannot be reused, resulting in waste of resources.
The wristband is designed to be detachable without damage by using a tamper-evident mounting base and cover connected by special-shaped tamper-evident screws, combined with a design that allows for cutting the alarm circuit and disassembling with tools. This ensures that the wristband can be removed without damage and will sound an alarm when the circuit is cut.
The wristband is designed to be safe, detachable, and reusable, preventing forced removal and enabling timely monitoring of abnormal removal behavior via alarm circuitry.
Smart Images

Figure CN224461216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart bracelet technology, specifically to a smart anti-tamper bracelet. Background Technology
[0002] Existing wristband products can be freely worn or removed by the wearer. However, for certain specific purposes and user groups, such as prisoners, parolees, and those released on medical parole, government supervision is required to monitor their activities at all times and prevent them from removing the wristbands they are wearing.
[0003] Currently, the tamper-proof function of smart anti-tamper bracelets is usually achieved through magnetic or plastic tamper-proof clips. Magnetic clip bracelets have many delicate parts, making production and assembly complicated. They require strong magnetic tools to disassemble, and since some inmates' workplaces contain strong magnets, there is a risk that inmates may disassemble them without authorization. Plastic tamper-proof bracelets are inconvenient to disassemble when specific individuals need to be released from supervision or have their bracelets removed. They often require damaging the bracelet structure to remove it, rendering the bracelet unusable, causing inconvenience and wasting resources. Utility Model Content
[0004] The purpose of this invention is to provide a smart anti-tamper bracelet that solves the technical problem that existing smart anti-tamper bracelets require structural damage to disassemble.
[0005] This utility model discloses an intelligent anti-tamper wristband, including a wristband body, a main watch band and a secondary watch band respectively provided at both ends of the wristband body, a cut alarm line provided in both the main watch band and the secondary watch band, and an anti-tamper component provided at the end of the main watch band or the secondary watch band.
[0006] The anti-tamper component includes an anti-tamper mounting base and an anti-tamper mounting cover, which are disassembled and assembled using special-shaped anti-tamper screws.
[0007] Working principle: First, install the tamper-evident mounting bracket onto the main (or secondary) watch band. Then, adjust the length of the secondary (or main) watch band before using the tamper-evident cover to secure both the main and secondary watch bands. Finally, tighten the tamper-evident screws with a tool to firmly secure the tamper-evident components, forming a physical tamper-proof system that cannot be disassembled without specialized tools. When the band needs to be removed, it can be disassembled non-destructively with tools. Bands worn by personnel under short-term supervision can be recycled and reused. By setting up a cut alarm circuit, an alarm will sound when the main or secondary watch band is cut, preventing the band from being forcibly removed.
[0008] Furthermore, the anti-tamper fixing base is provided with a countersunk hole for use with the irregular anti-tamper screw, and the anti-tamper fixing cover is provided with a threaded hole for use with the irregular anti-tamper screw.
[0009] By using countersunk holes and threaded holes in conjunction with special-shaped tamper-evident screws, the main watch band and the secondary watch band are connected and fixed by fixing the tamper-evident fixing base and the tamper-evident fixing cover.
[0010] Furthermore, the tamper-proof fixing base is provided with a mounting post, and the main watch band and the sub-watch band are respectively provided with mounting holes. The mounting post is used to pass through the mounting holes to fix the main watch band and the sub-watch band.
[0011] Furthermore, the tamper-evident fixing cover is provided with a limiting cavity for the mounting post.
[0012] Furthermore, the anti-tamper fixing cover is provided with a limiting groove, and the anti-tamper fixing base is provided with a limiting rib that cooperates with the limiting groove.
[0013] By setting limit grooves and limit ribs, the positions of the anti-tamper fixing cover and the anti-tamper fixing seat can be relatively fixed to prevent them from falling off, and the installation of the anti-tamper fixing cover and the anti-tamper fixing seat can be facilitated.
[0014] Furthermore, the cut alarm line is arranged along the edges of the main watch band and the sub-watch band, and the cut alarm line is integrally formed with the main watch band and the sub-watch band.
[0015] Furthermore, the main body of the wristband includes a lower wristband shell, a main control circuit board, and an upper wristband shell.
[0016] Furthermore, the lower shell of the wristband is connected to a heat-conducting metal plug.
[0017] Furthermore, the heat-conducting metal plug is fixed to the lower shell of the wristband by an O-ring and an annular buckle.
[0018] Furthermore, the main watch band and the secondary watch band are each provided with a watch band fixing head, the watch band fixing head is provided with a fixing groove, and the lower shell of the bracelet is provided with a fixing post for fixing the fixing groove.
[0019] By setting a fixing post, fixing groove, and strap fixing head, the main strap and the secondary strap can be connected to the lower case of the bracelet.
[0020] Furthermore, the lower shell of the wristband is provided with a wire hole for cutting the alarm line through which it passes and a wiring groove for fixing the cut alarm line.
[0021] Furthermore, the cut alarm line is soldered onto the main control circuit board.
[0022] Furthermore, the metal plug is provided with a glue-applying cavity.
[0023] Furthermore, a temperature sensor is installed inside the glue-applying chamber.
[0024] By setting up a glue-applying cavity, thermally conductive adhesive can be applied inside the cavity to fix the main control circuit board to the lower shell of the wristband and to make the heat transfer between the temperature sensor and the metal plug more accurate.
[0025] Furthermore, the side of the metal plug that contacts the wearer's arm when worn has a heat-conducting surface.
[0026] Furthermore, the upper shell of the wristband is provided with a fixing post that cooperates with the fixing groove.
[0027] By setting a fixing post on the upper shell of the bracelet, the main strap and the secondary strap can be connected to the upper shell of the bracelet.
[0028] Furthermore, the upper shell of the wristband is provided with a welding guide wire, and the lower shell of the wristband is provided with an ultrasonic welding surface for welding the welding guide wire.
[0029] By setting a fusion guide wire and an ultrasonic welding surface, the fusion guide wire can be welded to the ultrasonic welding surface, achieving waterproof sealing and fixation of the upper and lower shells of the wristband.
[0030] Furthermore, the upper shell of the wristband is equipped with an RFID anti-metal ceramic electronic tag.
[0031] Furthermore, the thickness of the RFID anti-metal ceramic electronic tag is greater than the average wall thickness of the upper shell of the wristband.
[0032] Furthermore, the RFID anti-metal ceramic electronic tag is injection molded integrally with the upper shell of the wristband.
[0033] The structural strength of the wristband's upper shell has been enhanced, resulting in higher strength and impact resistance during daily use. Furthermore, the RFID anti-metal ceramic electronic tag is positioned close to the outer surface of the wristband's upper shell, allowing for better and less interference-free data sensing and reading by RFID readers. This RFID anti-metal ceramic electronic tag is used to record user information and can achieve functions such as user location tracking, movement trajectory monitoring, and real-time roll call through existing software programming and hardware deployment.
[0034] Furthermore, a battery is installed on the main control circuit board.
[0035] Compared with the prior art, the beneficial effects of this utility model are:
[0036] 1. When the wristband needs to be removed, it can be disassembled without damage using tools, and wristbands worn by personnel under short-term supervision can be recycled and reused;
[0037] 2. By setting up a cut alarm circuit, an alarm can be triggered when the main or secondary watch band is cut, preventing the bracelet from being forcibly disassembled;
[0038] 3. By using countersunk holes and threaded holes in conjunction with special-shaped tamper-evident screws, the main watch band and the secondary watch band are connected and fixed by fixing the tamper-evident fixing base and the tamper-evident fixing cover;
[0039] 4. By setting limiting grooves and limiting ribs, the positions of the anti-tamper fixing cover and the anti-tamper fixing seat can be relatively fixed to prevent them from falling off, which facilitates the installation of the anti-tamper fixing cover and the anti-tamper fixing seat;
[0040] 5. By setting a fixing post, fixing groove and strap fixing head, the main strap and the auxiliary strap can be connected to the lower case of the bracelet;
[0041] 6. By setting up a glue-applying cavity, thermally conductive adhesive can be applied inside the glue-applying cavity to fix the main control circuit board to the lower shell of the wristband and to make the heat transfer between the temperature sensor and the metal plug more accurate.
[0042] 7. By setting a fixing post on the upper shell of the bracelet, the main strap and the secondary strap can be connected to the upper shell of the bracelet;
[0043] 8. By setting a fusion guide wire and an ultrasonic welding surface, the fusion guide wire can be welded to the ultrasonic welding surface to achieve waterproof sealing and fixation of the upper and lower shells of the wristband. Attached Figure Description
[0044] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0045] Figure 1 This is a schematic diagram of the structure of an intelligent anti-tamper bracelet according to the present invention.
[0046] Figure 2 This is a schematic diagram of the main structure of the bracelet of this utility model.
[0047] Figure 3 This is a schematic cross-sectional view of the main body of the bracelet of this utility model.
[0048] Figure 4 This utility model Figure 3 Enlarged view of the structure of part A in the middle.
[0049] Figure 5 This is an exploded view of the main strap and secondary strap of the wristband of this utility model.
[0050] Figure 6 This is a schematic diagram of the main watch strap, sub-watch strap, and anti-tamper component of this utility model.
[0051] In the attached diagrams, the markings represent the following: 10-Wristband body, 20-Main strap, 30-Secondary strap, 40-Anti-tamper component, 11-Wristband upper shell, 111-RFID anti-metal ceramic electronic tag, 12-Wristband lower shell, 121-Lower shell strap fixing post, 122-Wire hole, 123-Wire routing groove, 124-Fixing hole, 125-Ultrasonic welding surface, 13-Main control circuit board, 131-Battery, 132-Temperature sensor, 14-Heat-conducting metal plug, 141-Heat-conducting surface, 142-O-ring seal mounting groove, 143-... - Ring buckle, 144 - Glue application cavity, 15 - O-ring seal, 201 - Fixing hole, 21 - Strap fixing head, 211 - Upper shell fixing post fixing groove, 212 - Lower shell fixing post fixing groove, 22 - Main strap cut alarm circuit, 23 - Main strap soft rubber strap, 301 - Positioning hole, 31 - Secondary strap cut alarm circuit, 32 - Secondary strap soft rubber strap, 41 - Anti-tamper fixing base, 411 - Countersunk hole, 412 - Limiting rib, 413 - Mounting post, 42 - Anti-tamper fixing cover, 421 - Threaded hole, 422 - Limiting groove, 43 - Special-shaped anti-tamper screw. Detailed Implementation
[0052] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.
[0053] Example 1
[0054] The technical solution adopted in this embodiment is as follows:
[0055] like Figures 1-6 As shown, a smart anti-tamper wristband includes a wristband body 10, with a main watch band 20 and a secondary watch band 30 respectively provided at both ends of the wristband body 10. Both the main watch band 20 and the secondary watch band 30 are provided with cut alarm lines, and an anti-tamper component 40 is provided at the end of the main watch band 20 or the secondary watch band 30.
[0056] The anti-tamper component 40 includes an anti-tamper fixing base 41 and an anti-tamper fixing cover 42, which are disassembled and assembled by special-shaped anti-tamper screws 43.
[0057] Working principle: First, install the tamper-proof mounting bracket 41 onto the main watch band 20. Then, adjust the length of the secondary watch band 30 and use the tamper-proof mounting cover 42 to secure the main watch band 20 and the secondary watch band 30. Finally, tighten the irregularly shaped tamper-proof screws 43 with a tool to secure the tamper-proof component 40 firmly, forming a physical tamper-proof system that cannot be disassembled without specialized tools. When the wristband needs to be removed, it can be disassembled non-destructively with tools. Wristbands worn by personnel under short-term supervision can be recycled and reused. By setting an alarm circuit, an alarm can be triggered when the main watch band 20 or the secondary watch band 30 is cut, preventing the wristband from being forcibly removed.
[0058] Example 2
[0059] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-6 As shown, based on Embodiment 1, the following improvements are disclosed: the main body 10 of the wristband includes an upper wristband shell 11, a lower wristband shell 12, a main control circuit board 13, a heat-conducting metal plug 14, and an O-ring seal 15.
[0060] Example 3
[0061] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-6 As shown, based on Embodiment 2, the following improvements are disclosed: the upper shell 11 of the wristband is made of PC-ABS material, and an RFID anti-metal ceramic electronic tag 111, which is thicker than the average wall thickness of the upper shell, is installed inside. This RFID anti-metal ceramic electronic tag 111 is injection molded integrally with the upper shell 11, further strengthening the structural strength of the upper shell 11 and giving it higher strength and impact resistance in daily use. Furthermore, the RFID anti-metal ceramic electronic tag 111 is closer to the outer surface of the upper shell 11, allowing it to be sensed and read by the RFID reader more effectively and without interference. This RFID anti-metal ceramic electronic tag 111 is used to record user information and can obtain the corresponding user's location and movement trajectory monitoring, as well as real-time roll call functions, through existing software programming and hardware deployment, which will not be elaborated upon here. The upper shell 11 of the bracelet is provided with upper shell strap fixing posts 112 on both sides for mounting and fixing the main strap 20 and the secondary strap 30. The upper shell 11 of the bracelet is provided with a ring of guide welding wire 113 for ultrasonic welding with the lower shell 12 of the bracelet.
[0062] Example 4
[0063] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-6As shown, based on embodiment 3, the following improvements are disclosed: the lower shell 12 of the wristband is made of PC-ABS material, and has lower shell strap fixing posts 121 on both sides for mounting and fixing the main strap 20 and the secondary strap 30. The lower shell 12 has wire-passing holes 122 on both sides for the main strap 20 and the secondary strap 30 to cut the alarm circuit wires. One side of the wire-passing hole 122 has a wiring groove 123 for cutting the alarm circuit wires. After the cut alarm circuit is welded and fixed to the main control circuit board 13, the wiring groove 123 and the wire-passing hole 122 are sealed with sealant to make the wire-passing hole 122 waterproof. The lower shell 12 has a fixing hole 124 at the bottom center for fixing the heat-conducting metal plug 14, and an ultrasonic welding surface 125 on the lower shell 12 for ultrasonic welding and fixing to the upper shell 11 of the wristband.
[0064] Example 5
[0065] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-6 As shown, based on Embodiment 4, the following improvements are disclosed: the heat-conducting metal plug 14 is made of 6061 aluminum alloy, and has a heat-conducting surface 141 that contacts the wearer's arm, an installation groove 142 for the O-ring seal 15, an annular buckle 143 for fixing to the lower shell 12 of the wristband, and an internal glue-applying cavity 144. The heat-conducting metal plug 14 is installed in the fixing hole 124 on the lower shell 12 of the wristband through the annular buckle 143, and is waterproofed and sealed by pressing the O-ring seal 15 fitted on the installation groove 142 on the heat-conducting metal plug 14.
[0066] Example 6
[0067] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-6 As shown, based on embodiment 5, the following improvements are disclosed: a large-capacity button battery 131 is provided on the front of the main control circuit board 13, and a temperature sensor 132 is provided on the back of the main control circuit board 13. The temperature sensor 132 is placed in the glue cavity 144 of the heat-conducting metal plug, and the remaining position of the cavity is filled with heat-conducting silicone. The heat conduction of the heat-conducting metal plug 14 enables the temperature sensor 132 to sense the temperature data of the arm being worn. When the bracelet is removed from the arm being worn, the temperature data detected by the temperature sensor 132 is significantly different from the previously detected arm temperature data. At this time, the bracelet program determines that the bracelet has been removed and sends an alarm signal to the server, which serves as the function of alarming after the bracelet is removed from the hand.
[0068] Example 7
[0069] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-5As shown, based on embodiment 6, the following improvements are disclosed: the main watchband 20 is injection molded into a single unit consisting of a rigid watchband fixing head 21, a main watchband cut-off alarm line 22 evenly distributed around the periphery of the main watchband 20, and a main watchband soft rubber watchband 23 that wraps around the watchband fixing head 21 and the main watchband cut-off alarm line 22. The watchband fixing head 21 is made of PC-ABS and has an upper shell fixing post fixing groove 211 corresponding to the upper shell watchband fixing post 112 on the upper shell 11 of the bracelet, and a lower shell fixing post fixing groove 212 corresponding to the lower shell watchband fixing post 121 on the lower shell 12 of the bracelet. The cut-off alarm line extending from the main watchband 20 passes through the wire hole 122 and the wire routing groove 123 provided on the lower shell 12 of the bracelet and is then soldered onto the main control circuit board 13 to form an alarm circuit with a cut-off alarm function. The secondary strap 30 is injection molded from a rigid strap fixing head 21, a secondary strap cut-off alarm line 32 evenly distributed around the periphery of the secondary strap 30, and a secondary strap soft rubber strap 32 encasing the strap fixing head 21 and the secondary strap cut-off alarm line 31. The cut-off alarm line extending from the outer edge of the secondary strap 30 passes through the wire hole 122 and the wiring groove 123 provided on the lower shell 12 of the bracelet and is then soldered onto the main control circuit board 13, forming an alarm circuit with a cut-off alarm function. When the cut-off alarm circuit evenly distributed around the periphery of the main strap 20 and the secondary strap 30 of the bracelet is damaged, that is, when the main strap 20 and the secondary strap 30 of the bracelet are cut off, the bracelet program detects the signal of the alarm circuit being broken and sends an alarm signal to the server, thus fulfilling the function of alarming when the main strap 20 and the secondary strap 30 of the bracelet are cut off.
[0070] Example 8
[0071] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figures 1-6 As shown, based on embodiment 7, the following improvements are disclosed: the end of the main strap 20 is provided with a mounting hole 201 for installing the anti-tamper component 40, and the sub strap 30 is provided with a plurality of positioning holes 301 for positioning the anti-tamper component 40.
[0072] The anti-tamper component 40 consists of an anti-tamper fixing base 41, an anti-tamper fixing cover 42, and a special-shaped anti-tamper screw 43.
[0073] The anti-tamper fixing base 41 is made of PC-ABS and has a U-shaped shape. The side walls on both sides are provided with countersunk holes 411 for installing special-shaped anti-tamper screws 43. Limiting ribs 412 are provided at the corners of the side walls and the internal connecting surfaces. The center of the anti-tamper fixing base 41 is provided with two mounting posts 413 for fixing the watch strap.
[0074] The anti-tamper fixing cover 42 is made of PC-ABS and has a U-shaped shape that matches the anti-tamper fixing base 41. The side walls on both sides are provided with threaded holes 421 for installing special-shaped anti-tamper screws 43. The middle of the side walls on both sides is provided with a limiting groove 422 that matches the upper limit rib 412 of the anti-tamper fixing base 41. The center of the anti-tamper fixing cover 42 is provided with a limiting cavity 423 for the mounting post of the anti-tamper fixing base 41.
[0075] The above are the embodiments listed in this example. However, this example is not limited to the optional embodiments described above. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can derive other various forms of embodiments based on the inspiration of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example. The scope of protection of this example should be determined by the claims, and the specification can be used to interpret the claims.
Claims
1. A smart anti-tamper bracelet, characterized in that: The bracelet includes a main body (10), with a main strap (20) and a secondary strap (30) respectively provided at both ends of the main body (10). Both the main strap (20) and the secondary strap (30) are provided with cut alarm lines, and the ends of the main strap (20) or the secondary strap (30) are provided with anti-tamper components (40). The anti-tamper assembly (40) includes an anti-tamper fixing base (41) and an anti-tamper fixing cover (42), which are disassembled and assembled by special-shaped anti-tamper screws (43).
2. The smart anti-tamper bracelet according to claim 1, characterized in that: The anti-disassembly fixing base (41) is provided with a countersunk hole (411) for use with the special-shaped anti-disassembly screw (43), and the anti-disassembly fixing cover (42) is provided with a threaded hole (421) for use with the special-shaped anti-disassembly screw (43).
3. The smart anti-tamper bracelet according to claim 2, characterized in that: The anti-tamper fixing base (41) is provided with a mounting post (413), and the main watch strap (20) and the sub-watch strap (30) are respectively provided with mounting holes. The mounting post (413) is used to pass through the mounting holes to fix the main watch strap (20) and the sub-watch strap (30).
4. The smart anti-tamper bracelet according to claim 2, characterized in that: The anti-dismantling fixing cover (42) is provided with a limiting groove (422), and the anti-dismantling fixing base (41) is provided with a limiting rib (412) that cooperates with the limiting groove (422).
5. The smart anti-tamper bracelet according to claim 1, characterized in that: The cut alarm line is arranged along the edges of the main watch band (20) and the sub-watch band (30), and the cut alarm line is integrally formed with the main watch band (20) and the sub-watch band (30).
6. A smart anti-tamper bracelet according to claim 1, characterized in that: The main body (10) of the wristband includes a lower shell (12), a main control circuit board (13), and an upper shell (11).
7. A smart anti-tamper bracelet according to claim 6, characterized in that: The lower shell (12) of the wristband is connected to a heat-conducting metal plug (14).
8. A smart anti-tamper bracelet according to claim 6, characterized in that: The main control circuit board (13) has a battery on the front and a temperature sensor (132) on the back.
9. A smart anti-tamper bracelet according to claim 6, characterized in that: The upper shell (11) of the wristband is equipped with an RFID anti-metal ceramic electronic tag (111).
10. A smart anti-tamper bracelet according to claim 9, characterized in that: The thickness of the RFID anti-metal ceramic electronic tag (111) is greater than the average wall thickness of the upper shell (11) of the wristband.