Invisible Zipper Bottom Stop with Guided Pin Alignment
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Solution Overview
Problem
Conventional invisible zippers, particularly open-end zippers, are inconvenient to close due to the difficulty in aligning the bottom stop box and movable pin, often requiring multiple attempts and risking damage to the user or zipper teeth if not properly aligned, and the metal components can be hazardous.
Innovation Solution
A bottom stop assembly with a pin guide part and pin accommodating groove that facilitates smoother insertion and removal of the movable pin, ensuring precise alignment and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional invisible zippers use simple metal bottom stop boxes and movable pins, then the structure is simple and manufacturing is easy, but the user must insert multiple times to align the components, making the closing process inconvenient and time-consuming
Solution Approach 1:
The pin guide part is pre-formed as an integral component of the bottom stop box, creating a preliminary guiding path that automatically directs the movable pin into correct alignment during insertion, eliminating the need for multiple alignment attempts
Solution Approach 2:
The pin guide part acts as an intermediary element between the movable pin and the pin accommodating groove, facilitating smooth insertion by providing a gradual transition surface that guides the pin into proper position without requiring precise manual alignment
2Ease of manufacture
If conventional invisible zippers use simple metal bottom stop boxes and movable pins, then the manufacturing process is simple, but the structure lacks guidance features requiring multiple insertion attempts
Solution Approach 1:
The pin guide part is merged with the bottom stop box as an integral component formed in one molding process, combining the bottom stop box and guidance features into a single manufactured part without requiring separate assembly steps
Solution Approach 2:
The bottom stop box serves multiple functions: it provides the structural endpoint for the zipper, houses the pin accommodating groove for securing the movable pin, and incorporates the pin guide part to facilitate alignment and insertion, consolidating multiple functions into a single component
3Ease of manufacture
If the bottom stop box and movable pin are made of metal with simple structures, then the materials are easy to source and manufacture, but the components can easily separate causing zipper teeth to burst open and metal can injure the user
Solution Approach 1:
The bottom stop box is manufactured using composite materials (such as glass fiber reinforced nylon) that combine the strength and durability needed for secure connection with the molding capabilities required to integrate complex features like the pin guide part and pin accommodating groove into a single reliable component
Data Source
AI summary
A bottom stop assembly includes a bottom stop fixing part and a movable pin. The bottom stop fixing part includes a box fixing part and a box connecting part, and the box fixing part is provided with a pin accommodating groove. One end of the box connecting part is connected to the box fixing part, and the other end is configured to be connected to a first tape. The movable pin has a first end for being inserted into and mated with the pin accommodating groove and a second end for being connected to a second tape, and a side of the box connecting part facing the movable pin is provided with a pin guide part which is a sloped structure inclined relative to a direction from a bottom towards an opening of the pin accommodating groove.