A terminal protective shell integrating security alarm and a security method

Abstract

This invention belongs to the technical field of intelligent security accessories and portable terminal protective shells. It discloses a terminal protective shell with integrated security alarm and a security method, including a protective shell body and a security alarm module. The security alarm module is assembled onto the protective shell body via a detachable fixed structure or an irreversible integrated sealed structure. The module has a built-in button battery for independent power supply and forms a hardware dual-condition linkage detection with a mechanical anti-tamper switch and a vibration sensor. The pure hardware architecture control loop hardware implements signal determination, triggering a local audible and visual alarm and pushing offline warnings through a low-power communication unit. This invention does not rely on the power supply, network, or software system of the protected terminal. It continues to operate stably even when the terminal is powered off, disconnected from the power, or disconnected from the network. The hardware dual-condition triggering, combined with RC time window anti-jitter, effectively reduces false alarms. It features both a detachable and reusable design and an integrated high-tamper-resistance structure, adapting to various types of portable terminal protection and providing high reliability, high tamper resistance, and low false alarm security protection.

Description

Technical Field

[0001] This invention relates to the fields of intelligent security accessories, protective housings for portable electronic devices, and electronic alarm control circuits, and in particular to a terminal protective housing and security method integrating security alarms. Background Technology

[0002] With the widespread use of portable electronic devices such as mobile phones, tablets, smartwatches, VR / AR glasses, handheld game consoles, and portable bags, device loss, theft, and unauthorized disassembly and misappropriation have become core pain points for users. Existing similar protection and alarm solutions have several inherent technical defects: 1. Existing external anti-loss products are mostly independent components, temporarily fixed with simple adhesive and screws, belonging to a conventional detachable assembly structure. They are easily peeled off by hand and removed individually, with extremely low evasion costs, failing to form a reliable anti-tamper binding; 2. Most integrated alarm solutions heavily rely on the portable device's own system, Bluetooth network, and battery power. Once the device is powered off, loses power, or disconnects, the alarm protection immediately fails, resulting in poor overall reliability; 3. Traditional alarm control often uses general-purpose MCUs loaded with complex software algorithms, which are easily affected by signal interference, software cracking, and system crashes, impacting stability. Furthermore, they are subject to patent law. 4. Existing solutions do not strictly distinguish between detachable assembly structures and manufacturing-grade irreversible integrated solid-state structures. They either only cover simple post-installation fixing methods or narrowly limit a single injection molding process, resulting in incomplete protection scope and inability to fully cover all installation forms in the industry. 5. Conventional sensor alarms only use a single trigger logic, without hardware linkage judgment and time window anti-shake mechanism. Daily bumps, movement, and slight touches can easily generate false alarms, resulting in a poor user experience. 6. There is a lack of dedicated process specifications for the mass production of embedded electronic modules. There are no clear low-temperature injection molding temperature ranges or high-temperature packaging standards. Electronic components are easily damaged by high temperatures during the embedding injection molding process, making it difficult to industrialize and mass-produce them.

[0003] Existing technologies are only at a basic level, involving simple addition of alarm modules, conventional detachable fixing, and software logic control. They have not formed a complete technical system with full coverage of detachable and irreversible integrated dual structures, reliable control with pure hardware and no software, hardware dual-trigger anti-shake, and dedicated integrated molding process. There are obvious technological gaps and patent layout loopholes. Summary of the Invention

[0004] One objective of this invention is to provide a terminal protective shell and security method that integrates security alarms.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a terminal protective shell and security method integrating security alarm, comprising a protective shell body and a security alarm module, wherein the security alarm module is fixedly installed in a preset installation position on the protective shell body by a detachable and fixed structure; the security alarm module integrates control circuit hardware, a button battery, a mechanical anti-tamper switch, a vibration sensor and a low-power communication unit.

[0006] The button battery provides independent power to the control loop hardware, mechanical tamper switch, vibration sensor, and low-power communication unit, without relying on the power supply of the protected terminal device; the signal output terminals of the mechanical tamper switch and vibration sensor are electrically connected to the signal input terminals of the control loop hardware, forming a hardware dual-condition linkage detection structure; the control loop hardware adopts a pure hardware discrete logic circuit architecture, without programmable chips, embedded software, or operating system dependencies, and completes abnormal signal judgment and alarm driving only through hardware physical logic.

[0007] When the mechanical tamper switch detects illegal prying and peeling of the housing and the vibration sensor simultaneously detects the movement vibration signal, the control circuit hardware immediately drives the security alarm module to trigger a local audible and visual alarm, and at the same time pushes an offline warning to the bound terminal through the low-power communication unit.

[0008] Preferably, the detachable fixing structure is one or more combinations of snap-fit ​​connection, magnetic adsorption, self-adhesive bonding, screw locking, and interference fit. This structure is a reversible assembly structure, which can be disassembled and reassembled for reuse without damaging the protective shell body and the security alarm module.

[0009] Preferably, the security alarm module can be replaced by being fixed to the protective shell body through an irreversible integrated solidification structure. The irreversible integrated solidification structure is one or more combinations of low-temperature insert injection molding, secondary injection molding, overall potting and curing, and full-coverage ultrasonic thermal melting solidification. Separating the security alarm module from the protective shell body requires damaging the shell or module structure, and it cannot be completely restored and reused after disassembly.

[0010] Preferably, the control loop hardware has a built-in RC filter circuit, and the hardware time window accumulation decision logic is constructed by utilizing the delay characteristics of the RC circuit. The control loop hardware locks the alarm state only when the abnormal trigger signal is continuously valid within the set time window, and a momentary single touch will not trigger an alarm.

[0011] Preferably, the injection temperature of the low-temperature insert injection molding process is controlled between 80°C and 150°C, and the outer layer of the security alarm module is pre-treated with high-temperature resistant insulation to avoid damage to the internal electrical components due to high injection temperature.

[0012] Preferably, the secondary injection molding process involves first injection molding the protective shell body and reserving a positioning slot, then accurately placing the security alarm module into the slot, and finally filling and sealing the slot with secondary plastic wrapping to form a dustproof, waterproof, and tamper-proof overall solidified structure.

[0013] Preferably, the protective shell body has an array of sound-transmitting micro-holes corresponding to the sound-emitting part of the security alarm module, so as to ensure that the alarm sound is transmitted outward without loss without reducing the protective strength of the shell.

[0014] Preferably, the low-power communication unit is any one of Bluetooth, UWB, and NFC, and the low-power communication unit is directly electrically connected to the control loop hardware to realize offline push of alarm signals.

[0015] Preferably, the protective case body is adapted to any one of the following: mobile phone protective case, tablet protective case, smartwatch case, VR / AR glasses protective case, handheld game console shell, and bag protective case.

[0016] A security method for a terminal protective shell integrating a security alarm, applied to the aforementioned terminal protective shell integrating a security alarm, includes the following steps:

[0017] S1. The security alarm module is fixed to the protective shell body as a whole by a detachable fixing structure or an irreversible integrated sealing structure.

[0018] S2. The mechanical anti-tamper switch and vibration sensor collect physical abnormal signals of the housing being pried, disassembled, or illegally peeled off in real time.

[0019] S3. Signal level determination and RC time window de-jitter filtering are completed through pure hardware discrete logic circuits in the control loop hardware.

[0020] S4. After determining that the abnormal state is due to illegal disassembly, the control loop hardware drives the security alarm module to execute the local audible and visual alarm, and simultaneously pushes offline warning information to the bound terminal through the low-power communication unit.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (1) This invention creatively distinguishes between detachable and reversible fixed structures and irreversible integrated sealing structures, covering all installation and fixing forms in the industry such as buckles, magnetic attraction, bonding, screws, low-temperature insert injection molding, secondary injection molding, and ultrasonic hot melting. It not only meets the daily needs of users for aftermarket installation and detachable maintenance, but also achieves mass production-level high anti-tampering packaging. Competitors cannot circumvent protection through simple modifications. The patent protection scope is complete and the rights protection is highly enforceable. It adopts a button battery independent power supply design, and the power supply circuit is completely isolated from the protected terminal. The alarm function is always online when the terminal is powered off, disconnected from the power supply, disconnected from the network, or in a black screen state. It completely solves the pain point of offline failure caused by the high dependence of traditional security solutions on the power of the equipment, system, and network, and achieves 24-hour all-weather security protection. The control circuit hardware adopts a pure hardware discrete logic circuit architecture, without programmable chips, embedded software, or operating system dependence. It only completes signal judgment and alarm driving through hardware physical logic, fundamentally eliminating problems such as software cracking, system crashes, signal interference, and flashing bypass. The working stability and anti-cracking capability are exponentially improved.

[0023] (2) This invention creatively adopts a dual hardware decision logic of mechanical anti-tampering + vibration dual-condition linkage triggering combined with RC hardware time window anti-shake. Without complex software algorithms, it can filter invalid trigger signals in daily use from the hardware bottom layer, reducing the false alarm rate to an extremely low level, taking into account both security sensitivity and user experience, and solving the core pain point of frequent false alarms in traditional solutions. It clearly defines the process parameters and packaging standards for low temperature insert injection molding (80℃~150℃) and secondary injection molding, and performs high temperature resistant insulation treatment on the security alarm module in advance, completely solving the industry problem of high temperature damage during electronic module embedding injection molding. The process can be replicated and is easy to mass-produce. Those skilled in the art can achieve large-scale production without creative labor. At the same time, the process is included in patent protection to strengthen the protection of rights on the production side. The protective shell body can be adapted to all categories of portable terminals such as mobile phones, tablets, smartwatches, VR / AR glasses, handheld game consoles, and bags. A single technical architecture covers the entire security accessory market. There is no need to redesign the core solution for different devices. It has strong versatility and extremely high commercial application and patent layout value.

[0024] (3) The present invention directly connects the low-power communication unit to the control loop hardware. After the alarm is triggered, it can push offline warnings to the bound terminal without the need for a network, realizing dual protection of local sound and light alarm and remote offline reminder. Even if the protected terminal loses connection, the user can still know the abnormality at the first time, and the security protection is without dead angles. The protective shell body has array-type sound-transmitting micro-holes corresponding to the sound-emitting part. Without reducing the shell's anti-collision, dustproof and waterproof protection strength, it ensures that the alarm sound is transmitted outward without loss. At the same time, the integrated solid seal structure can achieve an IP54 or higher protection level, realizing the perfect integration of physical protection and security alarm. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic cross-sectional view of the protective shell body of the present invention.

[0027] Figure 3 This is a schematic diagram of the process of the present invention.

[0028] In the diagram: 1. Protective housing body; 2. Detachable and fixed structure; 3. Low-power communication unit; 4. Control circuit hardware; 5. Button battery; 6. Security alarm module; 7. Mechanical anti-tamper switch; 8. Vibration sensor. Detailed Implementation

[0029] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0031] It should be noted that the terms "first" and "second" in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] Preferred embodiments of the present invention, such as Figures 1 to 3 As shown, a terminal protective shell integrating security alarm and a security method are disclosed.

[0033] Example 1: Detachable Mobile Phone Security Case

[0034] The protective case body 1 is made of flexible TPU material, compatible with mainstream 6.5-inch smartphones. The edges of the case are rounded for impact protection, and a mounting position for the security alarm module 6 is provided on the back. The security alarm module 6 uses a combination of magnetic adsorption and dotted adhesive bonding for a detachable and fixed structure 2. The magnetic components are embedded in the four corners of the module, and the adhesive layer is removable and residue-free. The overall assembly structure is reversible, allowing users to disassemble the module by hand without damage for charging, replacement, and maintenance. Both the protective case body 1 and the security alarm module 6 can be reused after disassembly.

[0035] The security alarm module 6 integrates control circuit hardware 4, a CR2032 button battery 5, a mechanical tamper switch 7, a vibration sensor 8, and a Bluetooth Low Energy communication unit 3. The button battery 5 provides independent power to the entire module, and the power supply circuit is completely isolated from the mobile phone. The module can still function normally even when the phone is powered off, disconnected, or the SIM card is removed. The mechanical tamper switch 7 is located at the seam between the module and the protective shell 1; the switch level immediately flips when the module is pried or peeled off. The vibration sensor 8 uses a high-sensitivity piezoelectric vibration sensor to collect signals of shell movement and shaking in real time.

[0036] The control loop hardware 4 adopts a pure hardware discrete logic circuit, consisting of an LM393 voltage comparator, RC filter capacitors, transistor switching devices, an active buzzer, and LED warning lights. It has no MCU chip, no embedded software, and no operating system dependency; signal processing is completed solely through hardware physical logic. The module uses hardware dual-condition linkage triggering + RC time window anti-bounce logic. The alarm judgment process is only initiated when the mechanical tamper switch 7 detects a stripping signal and the vibration sensor 8 simultaneously detects a continuous vibration signal. The RC time window is set to 3 seconds, automatically filtering out signals from momentary touches and brief movements, effectively avoiding false alarms during daily use.

[0037] The protective shell body 1, corresponding to the sound-emitting part of the security alarm module 6, has an array of 0.8mm diameter sound-transmitting micro-holes arranged in a matrix to ensure that alarm sounds above 85dB are transmitted outwards without loss, without reducing the protective strength of the shell. In the event of unauthorized disassembly, the control circuit hardware 4 immediately drives the buzzer and LED lights to achieve an audible and visual alarm. At the same time, the Bluetooth Low Energy communication unit 3 pushes warning information offline to the user's bound smart bracelet and backup mobile phone, achieving dual protection of local alarm and remote reminder.

[0038] Example 2: Low-Temperature Insert Injection Molded One-Piece Flat Protective Shell

[0039] In this embodiment, the protective shell body 1 is made of PC hard plastic material, which is compatible with a 10.9-inch tablet computer. The security alarm module 6 adopts a low-temperature insert injection molding process to form an irreversible integrated solid-sealed structure with the protective shell body 1. Before injection molding, the security alarm module 6 is first subjected to polyimide high-temperature resistant insulating encapsulation treatment. The encapsulation layer thickness is 0.1mm and can withstand a high temperature of 150℃. The injection molding temperature is strictly controlled at 120℃ to ensure the fluidity of the plastic and the integrity of the molding while avoiding high temperature damage to the internal electronic components of the module. The module is embedded and sealed in one molding, with no exposed disassembly points.

[0040] The internal configuration of the security alarm module 6 is the same as that of Example 1. The button battery 5 is independently powered, the mechanical anti-tamper switch 7 is embedded in the junction of the housing and the module, and the vibration sensor 8 is integrated into the core of the module. The control loop hardware 4 also adopts a pure hardware discrete logic circuit. The RC time window is set to 5 seconds. Only continuous prying or disassembly will trigger the alarm. Slight vibrations from daily placement or carrying will not trigger the alarm.

[0041] When this integrated structure is separated, the protective shell body 1 or the security alarm module 6 must be cut or broken. Once disassembled, it cannot be completely restored and reused, significantly improving its tamper resistance. The four corners of the protective shell body 1 are thickened for drop protection, and the sound-permeable micropores in the sound-emitting part are integrally molded with the shell. It has a dustproof and waterproof rating of IP54, making it suitable for outdoor use of tablets and office carrying scenarios. Even when the tablet is turned off or powered off, the security alarm function remains online.

[0042] Example 3: Secondary injection molding to cover protective shell for bags

[0043] This embodiment is applied to the protective shell of a suitcase. The protective shell body 1 is made of ABS+PC composite material. The security alarm module 6 is fixed by a secondary injection molding process. The specific steps are as follows: First, the main body of the protective shell is injection molded, and a positioning slot for the security alarm module 6 is reserved on the inside of the shell handle. The slot is equipped with a locking structure to ensure accurate positioning of the module. Second, the encapsulated security alarm module 6 is inserted into the slot and fixed. Third, the gaps in the slot are filled with secondary plastic wrapping to completely encapsulate the module inside the shell, forming a seamless, dustproof, waterproof, and tamper-proof overall sealed structure.

[0044] The security alarm module 6 internally adopts the control loop hardware 4 of the minimal MCU system architecture, which only retains the basic peripheral circuits of crystal oscillator, reset and signal acquisition, without loading complex application programs, and only performs hardware threshold comparison, delay lock and trigger timing control; the low power communication unit 3 adopts UWB ultra-wideband communication, which can realize short-range offline positioning and early warning push after the alarm is triggered, and is suitable for long-distance baggage consignment and travel anti-theft scenarios.

[0045] The mechanical tamper-proof switch 7 and vibration sensor 8 are triggered by a dual-signal linkage, with an RC time window set to 8 seconds. This effectively filters out normal vibrations during bag handling and transport, triggering the alarm only when the bag is forcibly pried open or the module is damaged. The button battery 5 uses a high-capacity, ultra-thin soft-pack battery, providing up to 12 months of continuous use without relying on the bag's internal power supply system. It can still provide a stable alarm even when the network is disconnected or there is no external power source.

[0046] Example 4: Ultrasonic Full-Envelope Heat-Melt Smart Wearable Sheath

[0047] This embodiment is compatible with portable cases for smartwatches and VR / AR glasses. The protective case body 1 is made of soft silicone material, and the security alarm module 6 uses a fully enclosed ultrasonic heat-melting bonding process to form an irreversible, integrated, and sealed structure with the protective case. The ultrasonic heat-melting temperature is controlled at 90℃, and the heat-melting time is 3 seconds, fusing the module and the silicone protective case into a whole. There are no adhesives, screws, or clips, resulting in a clean and unified appearance and enhanced protection.

[0048] The module is miniaturized to fit the wearable device, with a thickness of only 1.5mm. It integrates a miniature button battery 5, a surface-mount mechanical tamper-proof switch 7, a miniature vibration sensor 8, and an NFC low-power communication unit 3. The control loop hardware 4 is a purely discrete hardware circuit. The dual-condition triggering logic and RC anti-shake parameters are adapted to the wearable device usage scenarios. Daily wearing and removing the device will not trigger an alarm. Only when the protective case is forcibly torn or the module is illegally removed will an audible and visual alarm be activated, and an offline warning will be pushed to the user's mobile phone via NFC.

[0049] The protective case body 1 conforms to the curvature of the wearable device, and the sound-emitting part has a micro-perforation for sound transmission, which does not affect the wearing comfort and heat dissipation of the device. At the same time, it has triple protection of anti-tampering, waterproof and drop protection, meeting the security needs of high-value portable devices such as smartwatches and VR / AR glasses.

[0050] Example 5: Interference fit + screw combination for detachable housing

[0051] This embodiment is compatible with any of the following: mobile phone cases, tablet cases, smartwatch cases, VR / AR glasses cases, handheld game console cases, and bag cases. The protective case body 1 is made of rigid PC material, and the security alarm module 6 adopts an interference fit + screw locking combination detachable fixing structure 2. The case has a reserved module insertion slot, and the module and the slot are interference fit. It is also reinforced by two miniature anti-tamper screws. Users can use special tools to disassemble the module without damaging the case and module structure, which meets the needs of self-maintenance and charging.

[0052] The internal components, triggering logic, and control circuit of the security alarm module 6 are the same as those in Example 1. The mechanical anti-tamper switch 7 is arranged at the screw hole and the plug gap. When the screw is loose or the module is unplugged, the signal is triggered immediately. The vibration sensor 8 detects the movement and shaking of the game console. After the two signals are synchronously effective and last for more than 2 seconds, the sound and light alarm and Bluetooth offline warning are triggered.

[0053] The protective case body 1 fits snugly against the game console's buttons and interfaces without affecting operation or heat dissipation. The sound-permeable micro-holes ensure clear alarm sounds, and the detachable structure balances tamper resistance with ease of maintenance, making it suitable for everyday carrying and use of handheld game consoles.

[0054] Working principle:

[0055] When in use, after the system is powered on, the button battery 5 provides a completely independent power supply circuit for the control circuit hardware 4, mechanical anti-tamper switch 7, vibration sensor 8, and low-power communication unit 3. The power supply system is physically isolated from the protected terminal, and the operation of the module is not affected by the terminal being powered off, disconnected from the power supply, card removed, or disconnected from the network.

[0056] In normal standby mode, the mechanical anti-tamper switch 7 is in constant contact with the joint between the protective shell body 1 and the security alarm module 6, continuously monitoring the physical signals of the shell being pried, peeled, or illegally disassembled; the vibration sensor 8 simultaneously collects environmental signals of the equipment being moved, shaken, or vibrated. The two types of sensors collect data independently and do not interfere with each other.

[0057] The collected signals are synchronously transmitted to the control loop hardware 4. The module adopts hardware dual-condition AND gate decision logic. The alarm judgment process is only entered when the mechanical anti-tamper switch 7 detects a valid stripping signal and the vibration sensor 8 detects a continuous vibration signal. A single signal trigger will directly reset the module, filtering out invalid signals from daily bumps and brief movements at the source.

[0058] After the signal passes the judgment, it enters the RC hardware time window anti-shake accumulation decision stage. Relying on the delay characteristics of the RC filter circuit built into the control loop hardware 4, the alarm state can only be locked when the abnormal signal is continuously effective within the set time window; instantaneous touch and intermittent vibration signals will be automatically filtered by the hardware, and accurate anti-shake can be achieved without software algorithms.

[0059] After the alarm status is locked, the control loop hardware 4 directly drives the security alarm module 6 to start a high-decibel audible and visual alarm. At the same time, it triggers the low-power communication unit 3 to push warning information offline to the user's bound smart terminal via Bluetooth, UWB or NFC. The alarm status is maintained until the module is powered off or manually reset, achieving highly reliable security protection without software, system or network dependence throughout the process.

[0060] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A protective shell for an integrated security alarm terminal, characterized in that, The device includes a protective shell body (1) and a security alarm module (6). The security alarm module (6) is fixedly installed on the protective shell body (1) at a preset installation position through a detachable fixing structure (2). The security alarm module (6) integrates control circuit hardware (4), button battery (5), mechanical anti-tamper switch (7), vibration sensor (8) and low power communication unit (3). The button battery (5) provides independent power to the control loop hardware (4), mechanical anti-tamper switch (7), vibration sensor (8) and low-power communication unit (3), without relying on the power supply of the protected terminal equipment; the signal output terminals of the mechanical anti-tamper switch (7) and vibration sensor (8) are electrically connected to the signal input terminals of the control loop hardware (4), forming a hardware dual-condition linkage detection structure; the control loop hardware (4) adopts a pure hardware discrete logic circuit architecture, without programmable chips, embedded software and operating system dependence, and only completes the abnormal signal judgment and alarm drive through hardware physical logic; when the mechanical anti-tamper switch (7) detects illegal prying and peeling of the shell and the vibration sensor (8) detects the moving vibration signal at the same time, the control loop hardware (4) immediately drives the security alarm module (6) to trigger the local sound and light alarm, and pushes the offline warning to the bound terminal through the low-power communication unit (3); this protective shell can stably alarm under the conditions of terminal shutdown, power failure and network failure, and greatly reduces the false alarm rate by relying on dual-condition linkage detection, and has the security protection effect of independent power supply, high anti-tampering and high reliability.

2. The terminal protective case for integrated security alarm as described in claim 1, characterized in that: The detachable fixing structure (2) is one or more combinations of snap-fit ​​connection, magnetic adsorption, self-adhesive bonding, screw locking, and interference fit. This structure is a reversible assembly structure, which can be disassembled and reassembled for reuse without damaging the protective shell body (1) and the security alarm module (6).

3. The terminal protective case for integrated security alarm as described in claim 1, characterized in that: The security alarm module (6) can be replaced by being fixed to the protective shell body (1) by an irreversible integrated solidification structure. The irreversible integrated solidification structure is one or more of the following: low temperature insert injection molding, secondary injection molding, overall potting and curing, and full-coverage ultrasonic hot melt solidification. Separating the security alarm module (6) from the protective shell body (1) requires damaging the shell or module structure, and it cannot be completely restored and reused after disassembly.

4. The terminal protective case for integrated security alarm as described in claim 1, characterized in that: The control loop hardware (4) has a built-in RC filter circuit. The hardware time window accumulation decision logic is constructed by utilizing the delay characteristics of the RC circuit. The control loop hardware (4) locks the alarm state only when the abnormal trigger signal is valid within the set time window. A single touch will not trigger an alarm.

5. The terminal protective housing for integrated security alarm as described in claim 3, characterized in that: The injection temperature of the low-temperature insert injection molding process is controlled at 80℃~150℃. The outer layer of the security alarm module (6) is pre-treated with high-temperature resistant insulation to avoid damage to the internal electrical components caused by high injection temperature.

6. The terminal protective housing for integrated security alarm as described in claim 3, characterized in that: The secondary injection molding process involves first injection molding the protective shell body (1) and reserving a positioning slot. After accurately placing the security alarm module (6) into the slot, the slot is filled and sealed by secondary plastic wrapping to form a dustproof, waterproof, and tamper-proof overall solid seal structure.

7. The terminal protective case for integrated security alarm as described in claim 1, characterized in that: The protective shell body (1) has an array of sound-transmitting micro-holes corresponding to the sound-emitting part of the security alarm module (6) to ensure that the alarm sound is transmitted outward without damage without reducing the protective strength of the shell.

8. The terminal protective housing for an integrated security alarm as described in claim 1, characterized in that: The low-power communication unit (3) is any one of Bluetooth, UWB, or NFC. The low-power communication unit (3) is directly electrically connected to the control loop hardware (4) to realize offline push of alarm signals.

9. The terminal protective housing for an integrated security alarm as described in claim 1, characterized in that: The protective case body (1) is adapted to any one of the following: mobile phone protective case, tablet protective case, smart watch case, VR / AR glasses protective case, handheld game console shell, and bag protective case.

10. A security method for a terminal protective shell integrating a security alarm, applied to the terminal protective shell integrating a security alarm as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Fix the security alarm module (6) to the protective shell body (1) as a whole through a detachable fixing structure (2) or an irreversible integrated sealing structure; S2. The mechanical anti-tamper switch (7) and vibration sensor (8) collect physical abnormal signals of the shell being pried, disassembled, or illegally peeled off in real time. S3. Signal level determination and RC time window de-jitter filtering are completed by the pure hardware discrete logic circuit of the control loop hardware (4). S4. After determining that the abnormal state is due to illegal disassembly, the control loop hardware (4) drives the security alarm module (6) to execute the local sound and light alarm, and simultaneously pushes offline warning information to the bound terminal through the low power communication unit (3).

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