Zipper Puller Stability via Elastic Friction Surface
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Solution Overview
Problem
Conventional zippers often experience puller sway during the engagement or disengagement process, leading to instability and inconvenience while dressing.
Innovation Solution
A zipper design featuring a through hole on an elastic member with symmetrically arranged position-limiting protrusions that prevent the puller from swaying left and right, ensuring stability by providing a frictional contact surface for sliding friction, allowing the puller to rotate smoothly while engaging or disengaging zipper teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the puller is allowed to rotate relative to the zipper head base to facilitate hand operation, then the ease of operation is improved, but the puller sways left and right causing instability
Solution Approach 1:
The elastic member is provided with a friction surface at the specific location where it contacts the position-limiting portion of the puller. This localized friction contact provides just enough resistance to prevent lateral swaying while allowing the necessary rotation for operation, thus resolving the contradiction between ease of operation and stability.
Solution Approach 2:
The elastic member changes the friction parameter dynamically through its elastic deformation. When the puller rotates, the elastic member deforms and provides varying friction force - sufficient to prevent swaying during normal operation, but allowing rotation when force is applied. This parameter change enables both stability and operability.
2Stability of the object's composition
If position-limiting portions are added to prevent puller swaying, then the stability is improved, but the device complexity increases
Solution Approach 1:
The position-limiting portions are integrally formed with the puller, merging the position-limiting function into the existing puller structure rather than adding separate components. The elastic member with its friction surface is integrated into the zipper head base, combining multiple functions (position limiting, friction contact, elasticity) into a single component, thus improving stability without significantly increasing device complexity.
Solution Approach 2:
The elastic member serves multiple functions: it provides the friction surface for position limiting, acts as a spring for elastic deformation, and serves as part of the zipper head base structure. This multi-functionality reduces the need for separate components, maintaining simplicity while achieving stability.
3Reliability
If the through hole is arranged on an elastic member, then the puller can be held steady during rotation, but the manufacturing precision requirements increase
Solution Approach 1:
The elastic member allows for parameter changes in position and shape during operation. The through hole position and the friction surface geometry are designed to accommodate elastic deformation, allowing manufacturing within standard tolerances while maintaining reliable operation through the elastic member's ability to adapt its shape.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution stabilizes the puller's movement, ensuring a steady process of engaging or disengaging zipper teeth, enhancing the convenience of dressing by preventing lateral movement and maintaining alignment during the pulling process.
Implementation Method 1
The elastic member is provided with a friction surface configured to be in sliding frictional contact with the position-limiting portion
Implementation Method 2
the through hole is arranged on an elastic member located on the zipper head base
Data Source
Figure 1
Figure 2~3
AI summary
A zipper for clothes, comprising a slider (1) for engaging or disengaging zipper teeth. The slider (1) is provided with a through hole for a puller (4) to pass through; the puller (4) passes through the through hole and can rotate clockwise or counterclockwise with the slider (1) as an axis; the puller (4) is provided with a limiting portion (3) for preventing the puller from swaying left and right. The zipper can keep the puller stable on both left and right sides when the slider is hardly pulled upward or downward by the hand, thereby achieving a stable process of engaging and disengaging the zipper teeth and ensuring convenience in wearing clothes.