Child-Resistant Lock Bag Mechanism With Concealed Lever Release
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Solution Overview
Problem
Conventional zipper bag locks are complex, prone to breaking or misplacement, and difficult to use, especially for preventing children from opening them.
Innovation Solution
A lock mechanism with a base, movable plate, and lever plate, featuring deformation blocks and springs, which are integrally molded for concealment and ease of use, allowing secure and stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lock mechanism is used on the zipper, then the bag can be secured against children, but the lock becomes complex and difficult to use
Solution Approach 1:
The lock mechanism is divided into distinct functional components: a base with accommodating slot, a movable plate with deformation block, and a lever plate with working part. This segmentation allows each component to perform its specific function while keeping the overall structure simple and manageable.
Solution Approach 2:
The locking function is extracted from complex conventional locks and implemented through a simple deformation block that can be inserted into or removed from the accommodating slot. This extraction simplifies the mechanism while maintaining security functionality.
2Reliability
If a latch mechanism is used to secure the zipper bag, then the bag can be locked, but the latch is easily inadmissible during use, resulting in broken or misplaced pieces
Solution Approach 1:
The deformation block is pre-configured to be insertable into the accommodating slot in a specific orientation. This preliminary configuration ensures that the locking action is performed correctly from the start, preventing improper assembly that could lead to broken or misplaced pieces during use.
Solution Approach 2:
The deformation block automatically engages with the accommodating slot through its own shape and deformation characteristics, without requiring additional fastening components or complex assembly steps. This self-service mechanism reduces the number of parts that could break or become misplaced.
3Ease of manufacture
If a simple lock design is used, then the structure is easy to manufacture, but the lock can be easily opened by children
Solution Approach 1:
The movable plate with the deformation block is nested within the base structure, with the deformation block fitting into the accommodating slot. This nesting creates a compact, integrated design that is both simple to manufacture and effective at preventing children from opening the bag, as the deformation block cannot be easily removed without the proper lever action.
4Ease of manufacture
If the lever plate and base are separately assembled, then the manufacturing is easier, but the appearance reveals the opening method, reducing child resistance
Solution Approach 1:
The lever plate and base are combined into a single integrally molded component, making it difficult for children to discover the opening method by examining the appearance. The connecting part is deformable to allow lever action, and this merging maintains ease of manufacture through integral molding while enhancing child resistance by concealing the operational mechanism.
Data Source
AI summary
A lock includes: a base, an accommodating slot arranged on the base, and a movable plate fitted in the accommodating slot; wherein at least one deformation block, which is configured to be jammed into the accommodating slot, is set on the movable plate; at least one restriction block, which is configured to be locked in the accommodating slot, is set on the movable plate; a lever plate is provided on the base, which is configured to release the deformation block and thus releasing the movable plate; the lever plate comprises a working part, a connecting part and a pressing part, wherein the connecting part is pivotally coupled to the base. The accommodating slot on an external side of the base is used to lock the movable plate, and the lock can be opened only by pressing the pressing part.