Zipper Slider Pull-Tab Guide for Accurate Pin Insertion

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Solution Overview

Problem

Existing zippers are difficult for individuals with limited hand mobility, such as children, elderly, and disabled persons, to accurately insert due to the complexity of the operation, and existing assistive designs often increase bulk and cost.

Innovation Solution

A zipper slider with an assistive insertion member on the pull tab that allows for a three-step process: flipping the tab upwards, inserting the zipper pin into a track channel, and guiding it into the slider body, without adding components to the slider.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an assistive insertion component such as a wider slider cover is added to the slider, then the ease of operation is improved, but the device complexity and volume increase

Engineering Contradiction:

Improveease of insertion operationVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The assistive insertion member is pre-integrated into the pull tab structure, forming a track channel that guides the pin insertion path before the actual zipping action occurs. This preliminary guidance structure is built into the pull tab itself, eliminating the need for separate assistive devices while maintaining ease of operation for users with hand mobility difficulties.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If an assistive insertion component is added to the slider, then the ease of operation is improved, but the manufacturing cost increases

Engineering Contradiction:

Improveease of insertion operationVSAvoidmanufacturing cost

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The assistive insertion member is merged with the existing pull tab component, combining two functions (pulling and guiding insertion) into a single integrated part. This eliminates the need for separate assistive components, reducing assembly steps and manufacturing costs while maintaining the ease of operation benefit.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If an assistive insertion component is added to the slider, then the ease of operation is improved, but the volume of the slider increases making it bulky

Engineering Contradiction:

Improveease of insertion operationVSAvoidslider volume

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The insertion assistance function is segmented from the main slider body and placed on the pull tab, which is a separate, smaller component. This segmentation allows the assistive feature to be provided without increasing the volume of the main slider body, keeping the overall zipper compact while maintaining ease of insertion for users with mobility issues.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12433375B2Slider of zipper and zipper

Publication Date: 2025.10.07 ZHEJIANG HUASHENGDA ZIPPER TECH CO LTD

AI summary

A slider of the zipper, including: a slider body including an upper guide plate and a lower guide plate connected to each other and a pull tab, guide Guide channels are formed between the upper guide plate and the lower guide plate, and the guide channel at one side may allow insertion and withdrawal of the zipper teeth at corresponding side; the pull tab is movably connected to the upper guide plate, the pull tab includes an assistive insertion member on which a track channel running through its two ends is formed; the assistive insertion member may be flipped upwards relative to the slider body, such that the track channel is in communication with the guide channel at corresponding side, and a pin of the zipper teeth at corresponding side may enter inside of the slider body through the track channel.