Combined Zipper Bottom Stop with Beveled Pin Guide for Easier Alignment
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Solution Overview
Problem
Invisible open-end zippers are inconvenient to close due to the difficulty in aligning the bottom stop box and movable pin, which can lead to separation and damage, and metal components can injure users.
Innovation Solution
A bottom stop assembly with a pin guide part and pin accommodating groove facilitates smoother insertion and removal of the movable pin, enhancing the convenience of closing the zipper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional metal bottom stop box and movable pin are used in an invisible open-end zipper, then the structural simplicity is maintained, but the alignment difficulty increases and user convenience deteriorates
Solution Approach 1:
The pin guide part is pre-formed as an integrated structure with the bottom stop box, creating a predetermined insertion path that guides the movable pin into correct alignment before the actual insertion operation occurs. This preliminary structural preparation eliminates the need for manual alignment adjustments during use.
Solution Approach 2:
The pin guide part acts as an intermediary element between the bottom stop box and the movable pin. It provides a transitional guiding structure that facilitates the connection process, making alignment easier while maintaining the overall structural simplicity of the zipper system.
2Reliability
If multiple insertion attempts are required to align the bottom stop box and movable pin, then the zipper can be closed, but the time consumption increases and productivity decreases
Solution Approach 1:
The pin guide part is pre-formed as an integrated structure with the bottom stop box, creating a predetermined insertion path that guides the movable pin into correct alignment before the actual insertion operation occurs. This preliminary structural preparation eliminates the need for manual alignment adjustments during use.
3Strength
If the bottom stop box is made of metal for durability, then the strength is improved, but the harm to user safety increases due to potential injury
Solution Approach 1:
The bottom stop box is constructed using composite materials that combine the durability and strength characteristics of metal components with the safety and flexibility of non-metallic materials. This composite structure maintains the necessary mechanical strength for reliable zipper operation while eliminating the sharp edges and hardness that cause user injury.
Data Source
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AI summary
A combined bottom stop, comprising a bottom stop fixing portion and a movable insertion pin. The bottom stop fixing portion comprises a square fixing portion and a square connecting portion; an insertion pin accommodating slot is formed in the square fixing portion; and the square connecting portion has one end connected to the square fixing portion and the other end connected to a first tape. The movable insertion pin has a first end used for being in insertion fit with the insertion pin accommodating slot and a second end used for being connected to a second tape; an insertion pin guide portion is provided at the end of the square connecting portion facing the movable insertion pin; and the insertion pin guide portion is of a bevel structure inclined from the bottom of the insertion pin accommodating slot toward an opening. In the process of inserting the movable insertion pin into the insertion pin accommodating slot, the insertion pin guide portion achieves a guiding function, and by means of the cooperation of the insertion pin guide portion and a slider, the movable insertion pin can be more smoothly guided into the insertion pin accommodating slot to complete the installation of the movable insertion pin and the bottom stop fixing portion.