Constrained Strap Clamping for Consistent Fastening Force
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Solution Overview
Problem
Existing equipment fixing systems require users to assess and apply sufficient tightening force, which can be problematic for users with limited DIY skills, leading to poor or damaged installations due to variable support shapes and dimensions.
Innovation Solution
A fixing system comprising a strap with an elastic device and mechanical stop, allowing for calibrated and repeatable tensioning independent of user perception, with an adjustable length and integrated opening and locking mechanism, ensuring secure attachment regardless of support shape or size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a metal clamp system with wing screw is used for rough pre-adjustment and pressurization, then the equipment can be fixed to the support, but the pressurization stress is highly dependent on the tightening force applied by the user, requiring the user to assess whether the tightening force is sufficient
Solution Approach 1:
The elastic device automatically generates the tightening force through its elastic properties, eliminating the need for the user to manually assess and apply the correct tightening force. The system serves itself by using the elastic deformation of the device to create the necessary clamping pressure on the support.
Solution Approach 2:
The invention changes the parameter of tightening force from being user-dependent to being device-dependent. By incorporating an elastic device with predetermined elastic characteristics, the tightening force becomes a function of the device's physical properties rather than the user's skill or perception.
2Reliability
If toggle clamps are used to provide locking when the balance point position is exceeded, then maintenance under stress is guaranteed, but the adjustment latitude is not significant and the user must be able to judge whether the clamping force is sufficient
Solution Approach 1:
The elastic device provides dynamic adjustment capability, allowing the clamping system to adapt to various support dimensions and shapes. The elastic deformation enables continuous adjustment within a range, unlike fixed-position toggle clamps, while maintaining reliable locking through the elastic restraint mechanism.
3Ease of operation
If the user applies tightening force to secure the equipment, then the equipment can be fixed to the support, but the user's mechanical/DIY skills are often limited, leading to poor or damaged installations
Solution Approach 1:
The elastic device performs the function of force application and force control automatically. The user simply needs to position the device and release the elastic restraint, which then self-generates the appropriate tightening force, eliminating the need for the user to have mechanical skills for assessing and applying correct force.
Solution Approach 2:
The invention transforms the installation process from requiring user skill-based force application to a parameter-controlled process where the elastic device's physical properties (elastic modulus, geometry) determine the tightening force, ensuring consistent installation quality regardless of user expertise.
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 system provides a simple, tool-free method for securing equipment with consistent and controlled tension, ensuring reliable attachment across various support configurations without relying on user expertise.
Implementation Method 1
the strap acts on a first end of the elastic device which then undergoes an elongation generating a tension force of the strap
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A fastening system (1) comprising a strap (35), an elastic device (50) and a mechanical stop (52), an adjustment device (38), and at least one support surface (20, 21), the fastening system being arranged, when the support surface is positioned against the support and the strap surrounds the support, such that in response to a manual pulling action on a first end (36) of the strap, the adjustment device adjusts the length of the strap to dimensions of the support, then the strap acts on a first end of the elastic device which then undergoes an elongation generating a tension force of the strap enabling it to be tightened around the support, the mechanical stop limiting the elongation of the elastic device to give the tension force a predetermined value.