Box Wrap Security Device With Magnetic Alerter And Spring Lock
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Solution Overview
Problem
Existing security measures for boxed goods in shopping malls are inadequate as they fail to prevent petty thieves from opening packaging boxes and pilfering products inside, especially in crowded environments where monitoring is challenging.
Innovation Solution
A box wrap security device featuring a double-spring gear lock mechanism and a magnetic alerter, where a steel wire is tightly bound to the packaging box using a key and lock system, preventing the box from being opened or the product removed, with a magnetic unlocker allowing secure retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple packaging box is used for goods, then the manufacturing cost and ease of operation are improved, but the security against theft deteriorates as thieves can easily open the box and pilfer products
Solution Approach 1:
The packaging box is divided into an upper shell and a lower shell that can be separated. The lock mechanism includes a limiting pin that can be positioned in different locations (locked position preventing key insertion, unlocked position allowing key insertion). This segmentation allows the box to transition between secure and accessible states while maintaining simple manufacturing of individual components.
Solution Approach 2:
The lock mechanism is pre-configured with a limiting pin and spring assembly that automatically prevents key insertion when the pin is in the locked position. The steel wire is pre-attached to both shells, creating a secure connection before the box is even sealed. This preliminary security setup eliminates the need for complex locking mechanisms while preventing theft.
2Reliability
If a lock mechanism is added to the packaging box to prevent opening, then the theft prevention capability is improved, but the device complexity increases
Solution Approach 1:
The locking function is extracted from a complex mechanism and implemented through a simple limiting pin that can be in two positions: locked (preventing key insertion) and unlocked (allowing key insertion). The spring assembly automatically returns the pin to its initial position, eliminating the need for motors, sensors, or electronic controls. This extraction maintains security while minimizing complexity.
Solution Approach 2:
The lock mechanism is self-servicing through the spring assembly that automatically returns the limiting pin to its initial locked position after being displaced by the key. The system requires no external power source, control circuitry, or manual operation beyond key insertion. The mechanical spring provides automatic resetting functionality, reducing complexity while maintaining reliable locking.
3Reliability
If a steel wire is tightly bound to the packaging box to prevent opening, then the security against theft is improved, but the ease of operation for legitimate customers deteriorates
Solution Approach 1:
The steel wire is attached to specific locations (upper shell and lower shell) at strategic points to maximize security coverage. The limiting pin is positioned to control key insertion at a specific location in the lock mechanism. This localized application of security features provides maximum protection while minimizing interference with legitimate opening operations.
Solution Approach 2:
The limiting pin can dynamically change its position between locked and unlocked states based on key insertion. The spring assembly enables dynamic movement of the pin, allowing the system to transition from a secure locked state to an accessible unlocked state when the correct key is provided. This dynamic behavior maintains security while enabling legitimate operation.
4Difficulty of detecting and measuring
If a magnetic alerter is added to detect tampering, then the detection capability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The mechanical tampering detection is replaced with a magnetic alerter system. Instead of complex mechanical sensors or electronic interlocks, a magnetic field-based detection system is used to sense when the packaging box is tampered with or removed from the secure environment. This substitution reduces mechanical complexity while providing reliable detection capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents theft by ensuring the packaging box remains sealed and secure, triggering an alarm if the wire is cut or the box is tampered with, thereby safeguarding the products within.
Implementation Method 1
an alerter is connected between the knob and the wire spool... wherein the alerter is a magnetic alerter
Implementation Method 2
A first spring is sleeved on an upper end of the limiting pin. An upper end of the first spring is supported on a bottom of the upper shell
Implementation Method 3
second springs are sleeved on an outer wall of the support columns... When the key is inserted into the clamping plate, the key tightly compresses the second springs
Implementation Method 4
Third springs are connected to a front side and a rear side of the clamping plate... the third springs are compressed to abut against the wire spool
Implementation Method 5
the upper shell and the lower shell are connected by ultrasonic welding, which prevents artificial opening
Data Source
AI summary
A box wrap security device includes a key, a connecting piece and a lock. The key is connected with the connecting piece through a steel wire and the connecting piece is connected with the lock through the steel wire. The lock includes an upper shell and a lower shell. The upper shell and the lower shell are locked with each other. A knob is embedded in the upper shell. A wire spool is fixedly connected to a bottom of the knob, and an alerter is connected between the knob and the wire spool. A limiting pin is inserted into a top socket of the lower shell. A first spring is sleeved on an upper end of the limiting pin. An upper end of the first spring is supported on a bottom of the upper shell.