Elastic Cable Tie Assembly for Adjustable Load Bundling
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Solution Overview
Problem
Existing cargo strap technologies lack a robust and adjustable solution for securing loads relative to support structures, particularly in applications requiring variable tension and secure bundling of elongated objects.
Innovation Solution
The development of stretch-band fixings, which comprise a combination of non-elastic cable ties with serrations and pawl mechanisms, and an elastic tension device with overmolded mechanical interlocks, allowing for adjustable tension and secure bundling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cargo straps are used to secure loads, then basic securing function is provided, but adjustable tension and secure bundling of elongated objects cannot be achieved
Solution Approach 1:
The patent combines multiple functional elements into an integrated stretch-band fixing system: cable ties for structural support, pawl mechanisms for tension control, serrations for grip enhancement, and elastic material for stretchability. This merging of components achieves adjustable tension and secure bundling while maintaining a unified device structure that does not excessively increase complexity.
Solution Approach 2:
The stretch-band fixing device performs multiple functions simultaneously: it secures loads to support structures, bundles elongated objects together, provides adjustable tension through pawl mechanisms, and accommodates varying bundle diameters through elastic stretching. This multi-functionality directly addresses the adaptability requirement without proportionally increasing device complexity.
2Adaptability or versatility
If elastic material is used for the tension device, then stretchability and adaptability to varying bundle diameters are improved, but connection strength and structural stability may be reduced
Solution Approach 1:
The patent employs composite material construction by combining elastic material for the tension device with non-elastic materials for the cable ties and structural components. This composite approach allows the elastic portion to provide stretchability and adaptability to varying bundle diameters, while the non-elastic cable ties and overmolded connections maintain structural strength and connection stability.
Solution Approach 2:
The tension device is segmented into distinct functional zones: elastic material portions for stretchability, overmolded connection regions for strength, and integration points with cable ties for structural support. This segmentation allows each portion to optimize its specific function while contributing to the overall performance of the fixing system.
3Strength
If pawl mechanisms with serrations are used in cable ties, then grip strength and resistance to rotation are improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the pawl mechanism and serrations as integrated features of the cable tie structure. The serrations are formed as part of the cable tie geometry, and the pawl mechanisms are incorporated into the same component or closely integrated assembly. This merging reduces the number of separate parts and simplifies manufacturing processes while achieving enhanced grip strength and rotation resistance.
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 stretch-band fixings provide a secure, adjustable, and durable solution for bundling and securing loads, offering improved grip and resistance to unwanted rotation, while accommodating varying bundle diameters and tensions.
Implementation Method 1
a tension device formed of an elastic material, the tension device connecting the first head to the second head
Implementation Method 2
a first overmold portion overmolded onto at least a portion of the first cable tie to form a first mechanical interlock; and a second overmold portion overmolded onto at least a portion of the second cable tie to form a second mechanical interlock
Data Source
AI summary
A stretch band fixing may include a first cable tie formed of a non-elastic material, a second cable tie formed of the non-elastic material, and a tension device formed of an elastic material. The first cable tie includes a first head including a first pawl mechanism and a first elongated strap having a plurality of first serrations. The second cable tie includes a second head including a second pawl mechanism and a second elongated strap having a plurality of second serrations. The tension device connects the first head to the second head and includes a first overmold portion overmolded onto at least a portion of the first cable tie to form a first mechanical interlock and a second overmold portion overmolded onto at least a portion of the second cable tie to form a second mechanical interlock.