Cut-Resistant Carrying Bag with Self-Locking Strap
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Solution Overview
Problem
Conventional carrying bags are vulnerable to theft, particularly when unattended, as they can be easily snatched or cut open, and lack effective anti-theft features to prevent unauthorized access to their contents.
Innovation Solution
The development of cut or slash-resistant carrying bags with self-locking carrying straps, featuring a security panel assembly made of cut-resistant polymer-based fibers and a strap channel with reinforced openings, along with a locking mechanism to secure the strap, providing enhanced protection against cutting and snatching while maintaining flexibility and style.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional carrying bags are made from flexible materials like cloth, canvas, nylon, leather, then they are easy to manufacture and have good flexibility, but they are vulnerable to cutting and snatching by thieves
Solution Approach 1:
The patent applies composite materials by integrating cut-resistant polymer-based fibers (such as Kevlar or Spectra) into the carrying bag structure. These high-strength synthetic fibers are woven or embedded within the bag material to create a composite that combines the flexibility needed for normal use with enhanced cut and slash resistance, directly resolving the contradiction between strength and ease of manufacture.
Solution Approach 2:
The patent implements local quality by placing cut-resistant polymer-based fibers specifically in strategic locations where cutting threats are most likely to occur, such as along the carrying strap, at the top opening, and around zippers. This localized reinforcement provides maximum security where needed while maintaining the overall flexibility and ease of manufacture of the bag.
2Reliability
If a locking mechanism is added to the carrying strap to prevent snatching and unauthorized access, then security against theft is improved, but the device complexity increases
Solution Approach 1:
The patent applies self-service by designing a locking mechanism that automatically engages when the carrying strap is threaded through the security panel assembly. The strap's own structure and positioning enable the lock to engage without requiring additional keys, codes, or complex manual operations, thereby improving anti-theft capability while minimizing the increase in device complexity.
Solution Approach 2:
The patent merges the locking function with the existing carrying strap and security panel assembly structure. The lock is integrated into the strap's threading path and engagement mechanism, combining multiple security functions (carrying, securing, and locking) into a unified system rather than adding separate complex locking components.
3Strength
If cut-resistant polymer-based fibers are used in the security panel assembly, then protection against cutting is enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies local quality by incorporating cut-resistant polymer-based fibers specifically in the security panel assembly located at the top opening and carrying strap areas, rather than uniformly throughout the entire bag. This targeted approach enhances cut resistance where most vulnerable while keeping the overall manufacturing process relatively simple and cost-effective.
Solution Approach 2:
The patent uses composite materials by weaving or embedding cut-resistant polymer-based fibers into the bag material during the manufacturing process. This integration allows the security fibers to be incorporated efficiently without requiring separate complex assembly steps, maintaining ease of manufacture while achieving enhanced cut resistance.
4Reliability
If the carrying bag is designed with a secure locking system and cut-resistant materials, then anti-theft protection is improved, but the weight and bulk of the bag increases
Solution Approach 1:
The patent applies local quality by concentrating security features (cut-resistant fibers, locking mechanisms) only in the specific areas most vulnerable to theft, such as the carrying strap and top opening. This localized approach provides maximum security protection while minimizing the addition of weight and bulk compared to reinforcing the entire bag structure.
Solution Approach 2:
The patent uses flexible shells and thin films by employing thin, flexible cut-resistant polymer-based fibers that provide security protection without adding significant bulk. These fibers can be woven or embedded within the existing bag material, maintaining the bag's flexibility and minimizing weight increase while achieving enhanced anti-theft protection.
Data Source
AI summary
In various embodiments, a carrying bag includes a carrying bag body formed by a security panel assembly comprising a cut-resistant fabric or mesh, with a strap channel having at least two spaced-apart reinforced channel openings; and a carrying strap comprising: first and second wire cables; a first flexible material having a first lateral region folded around the first wire cable to enclose the first wire cable and a second lateral region folded around the second wire cable to enclose the second wire cable; and a second flexible material arranged on or over a central region of the first flexible material. Representative embodiments may include a water-resistant pocket coupled to a protected seam and extending to an exterior of the carrying bag body; and a fastener to close the water-resistant pocket external to the carrying bag body.