Strap Tip Structure with Screw-Actuated Clamping
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Solution Overview
Problem
Webbing straps often unravel at the tip, leading to reduced usability and the need for frequent replacement, as existing solutions like plastic sheet covers are insufficient in strength and adjustable length options affect the strap's appearance and functionality.
Innovation Solution
A strap tip structure featuring a positioning fastener member with flexible arc plate clip members and an external screw structure, combined with a detachable outer cover, provides a secure and adjustable clamping mechanism that enhances the strap's structural strength and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic sheet is bonded to cover the tip of the webbing strap, then the unraveling of the strap tip is prevented, but the strength is insufficient and the damage rate remains high
Solution Approach 1:
The patent uses a composite structure combining a positioning fastener member (metal or rigid material) with an outer cover (protective shell) to create a head structure that is significantly stronger than simple plastic sheet bonding. The positioning fastener member with clip members provides mechanical clamping force while the outer cover adds protective strength, creating a composite solution that resolves the strength insufficiency of plastic-only solutions.
Solution Approach 2:
The head structure is divided into two functional segments: the positioning fastener member that provides clamping and positioning functionality, and the outer cover that provides protective strength. This segmentation allows each component to be optimized for its specific function while working together to achieve both unraveling prevention and high strength.
2Adaptability or versatility
If the length of the webbing strap is adjusted by tying, then the length can be adapted, but the appearance is affected due to entangled knots
Solution Approach 1:
The patent extracts the length adjustment function from the strap body itself and relocates it to the head structure through the detachable outer cover and positioning fastener member. This allows length adjustment to occur at the head end rather than requiring knots along the strap body, maintaining the clean appearance of the strap while preserving adjustability functionality.
Solution Approach 2:
The positioning fastener member acts as an intermediary mechanism between the strap and the outer cover, providing a controlled method for length adjustment without requiring visible knots. The clip members and screw structure mediate the adjustment process, allowing length modification while maintaining a neat, knot-free appearance.
3Length of moving object
If the length of the webbing strap is trimmed by cutting, then the length can be adjusted, but the head structure is removed and the strap may unravel with reduced strength
Solution Approach 1:
The patent makes the outer cover detachable and the positioning fastener member adjustable, allowing the head structure to be dynamically reconfigured after strap length adjustment. This means the strap can be cut to the desired length, and then the positioning fastener member can be repositioned and the outer cover reattached to create a new head structure, preserving both the adjusted length and the protective head structure.
Solution Approach 2:
The patent allows the head structure to be installed or reinstalled after the strap length has been adjusted. This preliminary action of creating the head structure after cutting ensures that the strap maintains its full length potential while still receiving the protective and strengthening benefits of the head structure at its final configured state.
4Device complexity
If a fixed length head structure is used, then the strap has a simple design, but the length cannot be adjusted without affecting appearance or strength
Solution Approach 1:
The head structure is segmented into the positioning fastener member and the outer cover, with the positioning fastener member itself segmented into a main body and multiple clip members. This segmentation enables independent adjustment of the clip members along the strap to achieve different lengths, while the overall head structure remains relatively simple in design.
Solution Approach 2:
The positioning fastener member serves multiple functions: it provides the head structure protection, enables length adjustment through repositionable clip members, and maintains structural strength. This multi-functionality achieves adaptability without significantly increasing design complexity, as a single component performs multiple roles.
Data Source
AI summary
A strap tip structure includes a positioning fastener member and an outer cover. The positioning fastener member includes a mainbody, at least three clip members and an external screw structure. The at least three clip members are flexibly connected to the mainbody, and each of the clip members is an arc plate and has an end portion. The external screw structure is disposed on an outer surface of the mainbody. The outer cover is detachably connected to the positioning fastener member. The outer cover includes an inner space and an inner screw structure, and the inner screw structure matches the external screw structure. When the inner screw structure of the outer cover and the external screw structure of the positioning fastener member are screwed together, the positioning fastener member is accommodated in the inner space.