Threading Head Barb and Rack Lock for Cable Tie
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Solution Overview
Problem
Existing threading aids with cable ties face challenges in achieving high tensile strength connections between the cable tie and the threading head, leading to cost-effective production issues due to the inability of screw connections to withstand significant tensile forces.
Innovation Solution
A threading head with a base body featuring a toothed rack receiving space and barbs that engage with the cable tie's toothed rack, providing a high tensile strength connection, along with additional design features like a storage area and access channel for tooling, facilitates cost-effective production and enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a screw connection is used to attach the threading head to the cable tie, then the assembly can be produced cost-effectively, but the connection cannot withstand enormous tensile forces
Solution Approach 1:
The connection interface is segmented into a toothed rack on the cable tie and corresponding barbs on the threading head, distributing the tensile load across multiple engagement points rather than relying on a single screw connection
Solution Approach 2:
The barb structure is designed to flex and engage dynamically with the toothed rack during insertion, creating a self-locking mechanism that provides high tensile strength without requiring additional fastening components
2Reliability
If the threading head is made thicker to avoid snagging on bumps in the cable duct, then the threading aid can overcome obstacles like corrugations and sheet metal cuts, but the device becomes more complex and may get caught on smaller obstacles
Solution Approach 1:
The threading head features a rounded, bulbous geometry that allows it to navigate corrugations and curves in the cable duct by deforming elastically, while the rounded shape prevents snagging on obstacles compared to sharp edges
3Adaptability or versatility
If the barb is made thinner to allow elastic movement and engagement with the toothed rack, then the connection can accommodate movement and engage properly, but the barb may be more difficult to manufacture with standard tooling
Solution Approach 1:
The barb is designed as a flexible, spring-like element that can deflect during insertion and engagement with the toothed rack, allowing for tolerance compensation and secure latching without requiring precision machining
Solution Approach 2:
The barb geometry is optimized with specific thickness and curvature parameters that allow it to be manufactured via injection molding while maintaining the necessary elastic properties for engagement with the toothed rack
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 enables a strong and stable connection between the cable tie and the threading head, ensuring high tensile strength and cost-effective manufacturing, while preventing snagging and jamming in cable ducts with obstacles.
Implementation Method 1
a threading head (8) for an insertion element (4) that can be attached to a threading aid (6) and has a cable tie (18) with a toothed rack (22)
Implementation Method 2
the barb (38) is designed like a leaf spring
Data Source
AI summary
The invention relates to a threading head (8) for an insertion element (4) that can be attached to a threading aid (6), which has a cable tie (18) with a rack (22), comprising a base body (32) with an outwardly open receiving space (34) into which the rack (22) can be inserted in an insertion direction (36) and at least one barb (38) projecting into the receiving space (34) and acting against the insertion direction (36) for locking with the rack (22).