Zigzag Sewing Elasticity in Glove Overlaps
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Solution Overview
Problem
Conventional sewn gloves have reduced elasticity in the overlapping portions due to straight thread sewing, making them uncomfortable to wear as they do not extend to fit the fingers properly.
Innovation Solution
The use of zigzag or wave-type sewing in the overlapping portions of the glove, incorporating inclined and vertical thread parts to create an elastic movement mechanism, allowing the glove to bend and fit the hand more comfortably.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If straight thread sewing is used in the overlapping portion, then the sewing structure is simple, but the elasticity of the overlapping portion is reduced and the glove cannot extend to fit the finger
Solution Approach 1:
The patent applies curved or zigzag stitching patterns instead of straight lines in the overlapping portion. The curved stitching creates an elastic movement mechanism that allows the glove material to extend and contract, enabling the glove to fit the finger comfortably while maintaining structural integrity.
Solution Approach 2:
The patent changes the geometric parameters of the stitching pattern from straight lines to curved or zigzag lines. This parameter change transforms the mechanical properties of the overlapping portion, increasing its elasticity and ability to deform to fit the finger shape.
2Ease of manufacture
If straight thread sewing is used, then the manufacturing process is simple, but external forces cannot be effectively applied to bend the glove material
Solution Approach 1:
The curved or zigzag stitching pattern creates natural flex points in the glove material that facilitate bending. When external forces are applied, the curved stitching allows the material to bend more easily along the curvature of the stitch pattern, improving ease of operation.
Solution Approach 2:
The elastic movement mechanism created by curved or zigzag stitching allows the glove to dynamically adapt to external forces. The stitching pattern enables the material to flex and deform in response to applied forces, making the glove easier to manipulate and wear.
3Strength
If the overlapping portion is sewn with straight thread, then the structural integrity is maintained, but the glove does not extend to fit the finger comfortably
Solution Approach 1:
The curved or zigzag stitching pattern maintains structural integrity while enabling the glove to extend and fit the finger. The continuous curved stitches distribute stress evenly across the overlapping portion, preventing tearing while allowing the material to deform to match the finger contour.
Solution Approach 2:
By changing the stitching geometry from straight to curved or zigzag patterns, the patent maintains the tensile strength of the overlapping portion while creating the necessary flexibility for the glove to extend and conform to the finger 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 sewn glove becomes easier and more comfortable to wear as the elastic movement mechanism allows the glove to extend and fit the fingers, reducing the need for external forces to bend the material, enhancing the overall fit and usability.
Implementation Method 1
The use of zigzag or wave-type sewing in the overlapping portions of the glove, incorporating inclined and vertical thread parts to create an elastic movement mechanism, allowing the glove to bend and fit the hand more comfortably
Data Source
Figure 1~2
Figure 3
Figure 4(A)~4(B)
AI summary
A first member and a second member are overlapped to form an overlapping portion (K) and a region including the overlapping portion is sewn in a zigzag manner. The first member is structured by an outer finger-palm portion (104A) and the second member is structured by an inner finger-palm portion (104B), respectively, and at the overlapping portion (K), the inner finger-palm portion (104B) is overlapped on the outer finger-palm portion (104A) or the outer finger-palm portion (104A) is overlapped on the inner finger-palm portion (104B).