Segmented Floor Carpet Clip Shaft for Low-Force Secure Insertion
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Solution Overview
Problem
Existing clip structures for attaching floor mats to carpets face issues with high removal force requirements and accidental disengagement during pulling, due to the elastic displacement of engaging pieces, which affects operation ability and stability.
Innovation Solution
A clip design featuring a male member with a lower flange portion and a shaft portion, and a female member with a cylindrical portion and engaging projections, where a regulation member is inserted to prevent disengagement of the engaging projections from the engaging portion, and the shaft portion is divided into multiple pieces for easier insertion, enhancing stability and reducing insertion force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shaft portion is inserted into the cylindrical portion to engage the engaging projections with the engaging portion, then the clip is securely attached to the floor carpet, but a large shaft insertion force is required because the shaft portion or elastic engaging pieces are hardly displaced in the diameter reduced direction
Solution Approach 1:
The shaft portion is divided into multiple shaft pieces separated by expansion portions. This segmentation allows each shaft piece to be compressed and expanded independently, reducing the force needed for insertion while maintaining secure engagement with the cylindrical portion.
Solution Approach 2:
The shaft portion is designed with elastic expansion and contraction capabilities through the expansion portions. This dynamic structure allows the shaft to compress during insertion and expand during engagement, reducing insertion force while ensuring reliable attachment.
2Ease of operation
If the elastic engaging pieces are used to allow disengagement during removal, then the floor mat can be removed from the floor carpet, but the female member may be disengaged together with the mat cap due to large pulling force or may accidentally disengage from the engaging projections
Solution Approach 1:
The shaft portion is segmented into multiple shaft pieces with expansion portions between them. This segmentation creates a progressive engagement mechanism where each shaft piece engages with the cylindrical portion sequentially, distributing the engagement force and preventing sudden disengagement while still allowing controlled removal.
Solution Approach 2:
The expansion portions act as cushioning elements that absorb and distribute pulling forces during removal. This beforehand cushioning prevents sudden disengagement by gradually engaging and disengaging the shaft pieces with the cylindrical portion, maintaining reliability while allowing intentional removal.
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 provides a stable attachment condition that maintains engagement even under external forces, reduces the insertion force required, and prevents accidental disengagement, improving the operational ability and usability of the clip.
Implementation Method 1
the shaft portion (35) is divided into a plurality of shaft pieces (38) separated by expansion portions (37), respectively. The shaft pieces (38) can be compressed and expanded in the radial direction
Implementation Method 2
the expansion portions (37) are provided between the shaft pieces (38) in the axial direction. The expansion portions (37) prevent the shaft pieces (38) from being compressed below a predetermined diameter
Implementation Method 3
the engaging projections (39) are provided on an outer periphery of the shaft portion (35) to project therefrom... engaging the shaft portion penetrating through the insertion hole with the cylindrical portion
Data Source
AI summary
A clip for attachment of a floor carpet includes a male member having a lower flange portion, and a shaft portion projecting from the lower flange portion; and a female member having a cylindrical portion to which the shaft portion is inserted, an upper flange portion projecting around an outer periphery of the cylindrical portion, and an engaging portion at an inner periphery of the cylindrical portion. The male member also includes a hole portion penetrating through the lower flange portion and the cylindrical portion, engaging projections formed around an outer periphery of the shaft portion, and a regulation member inserted into the hole portion. In case the male member is inserted into the female member to engage the engaging projections with the engaging portion and the regulation member is inserted into the hole portion, the regulation member prevents the engaging projections from being disengaged from the engaging portion.