Slide Fastener Pull Tab Attachment with Rotatable Auxiliary Part
Solution Overview
Problem
Existing slide fasteners face challenges in easily attaching and detaching pull tab auxiliary parts without limiting their appearance design, as current methods require significant force or restrict design flexibility.
Innovation Solution
A slide fastener pull tab with a rotatable and detachable auxiliary part, featuring an attachment hole with varying diameters and an elastically deformable head portion that allows easy assembly and disassembly by aligning and rotating the head portion relative to the hole, using fixing grooves and buckles for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a connecting column with large outer diameter is used to fasten the pull tab auxiliary part, then the connection strength is improved, but the attachment operation becomes difficult requiring large pressing force
Solution Approach 1:
The attachment mechanism is divided into two functional segments: a pressing stage where the elastic auxiliary part head portion is compressed to pass through the attachment hole, and a locking stage where the auxiliary part column portion rotates to engage with the attachment hole. This segmentation allows the system to achieve strong connection without requiring large pressing force, as the elastic deformation enables easy passage during assembly.
Solution Approach 2:
The auxiliary part head portion utilizes elastic deformation to change its dimensional parameters during attachment. When pressed, the head portion compresses elastically to fit through the attachment hole, then expands to lock in place. This parameter change enables the system to overcome the contradiction between connection strength and ease of operation.
2Reliability
If the pull tab auxiliary part is designed with a fixed shape to ensure proper attachment, then the attachment reliability is improved, but the appearance design flexibility is reduced
Solution Approach 1:
The attachment mechanism transitions from a static fixed-shape design to a dynamic system where the auxiliary part head portion can elastically deform during attachment. This dynamic capability allows the same attachment hole to accommodate various auxiliary part shapes and designs while maintaining reliable attachment, thus preserving appearance design flexibility.
Solution Approach 2:
The attachment hole serves multiple functions: it acts as a guide for the auxiliary part column portion, provides a locking mechanism through elastic engagement, and accommodates various auxiliary part designs. This multi-functionality enables the same structural element to support both attachment reliability and design flexibility.
3Volume of moving object
If the attachment hole has a small diameter to reduce size, then the device compactness is improved, but the ease of passage for the auxiliary part head portion is reduced
Solution Approach 1:
The auxiliary part head portion utilizes elastic deformation to dynamically change its size parameters during passage through the attachment hole. When pressed, the head portion compresses elastically to fit through the small-diameter hole, then expands to lock in place. This parameter change enables the system to achieve compactness without sacrificing ease of passage.
Solution Approach 2:
The elastic deformation of the auxiliary part head portion creates a temporary curved or compressed shape during passage, allowing it to flex around the attachment hole's edges. This curvature enables the head portion to pass through small openings and then return to its original shape for secure locking.
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
Facilitates easy attachment and replacement of pull tab auxiliary parts, enhances design flexibility, and maintains aesthetic integrity by preventing the attachment mechanism from constraining the appearance of the pull tab.
Implementation Method 1
The auxiliary part head portion is an elastically deformable body. When a length direction of the auxiliary part head portion is consistent with a length direction of the attachment hole, the attachment hole allows the elastically deformable auxiliary part head portion to pass therethrough.
Data Source
AI summary
A slide fastener pull tab with a pull tab auxiliary part includes: a pull tab main body; and the pull tab auxiliary part. The pull tab main body is provided with an attachment hole and an auxiliary part attachment portion. The pull tab auxiliary part includes an auxiliary part main body, and an auxiliary part head portion. The auxiliary part head portion is an elastically deformable body. The attachment hole has different hole diameters in at least two intersecting directions. The auxiliary part head portion has different lengths in at least two intersecting directions. When the pull tab auxiliary part whose auxiliary part head portion passes through the attachment hole is rotated until the length direction of the auxiliary part head portion intersects with the length direction of the attachment hole, the auxiliary part head portion abuts against the auxiliary part attachment portion.