Removable Tripod Foot Securement Against Vibration Loosening
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Solution Overview
Problem
Removable tripod feet often struggle with secure attachment due to difficult tightening and potential loosening under cyclic loads and vibrations, leading to instability and risk of detachment.
Innovation Solution
Incorporation of a resilient element, such as an elastomeric o-ring, at the interface between the foot and the ferrule, which increases friction and resists loosening by compressing and maintaining contact between interfacing surfaces, facilitated by a cross-axis aperture for easy installation and leverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a threaded connection is used to attach the removable foot to the tripod leg, then the foot can be easily removed and replaced, but the connection becomes difficult to tighten and may loosen under cyclic loads and vibrations
Solution Approach 1:
A resilient element (such as a rubber or elastomeric ring) is introduced as an intermediary between the foot and the ferrule. This element increases friction at the interface, preventing the foot from loosening under vibration and cyclic loads while still allowing easy removal when needed. The resilient element acts as a mediator that maintains secure attachment without requiring excessive tightening torque.
Solution Approach 2:
The friction parameter at the interface between the foot and ferrule is changed by introducing the resilient element. This element modifies the coefficient of friction and contact pressure, creating a self-locking effect that prevents loosening. The change in friction parameters allows the connection to remain secure under dynamic conditions while maintaining ease of installation.
2Reliability
If the threaded connection is tightened to prevent loosening, then the foot becomes more secure, but the installation process becomes more difficult and time-consuming
Solution Approach 1:
The resilient element serves as a mediator that reduces the need for high tightening torque. By increasing friction at the interface, it allows the foot to be securely attached with minimal turning effort, making installation easy while ensuring reliability. The element prevents the need for overtightening by providing continuous friction-based retention.
Solution Approach 2:
The resilient element provides self-service by automatically maintaining friction contact between the foot and ferrule. Once installed, the element's elasticity and friction properties continuously resist loosening forces without requiring additional tightening actions. This self-maintaining friction connection simplifies installation while ensuring secure attachment.
3Device complexity
If a simple threaded connection is used, then the device complexity is low, but the connection loosens under vibration and cyclic loading
Solution Approach 1:
A simple resilient ring or elastomeric element is introduced as an intermediary component. This addition maintains the overall simplicity of the attachment mechanism while effectively preventing loosening under vibration and cyclic loads. The element's friction-based retention mechanism provides reliable performance without adding complex locking features or multiple components.
Solution Approach 2:
The friction parameters of the simple threaded connection are modified by introducing the resilient element. This changes the connection behavior from a purely mechanical threaded interface to a friction-enhanced interface that resists loosening. The parameter change in friction coefficient and contact pressure provides reliability while maintaining the simplicity of the overall device.
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 ensures easy installation and reliable resistance to loosening of the threaded connection, enhancing the stability and utility of the tripod by maintaining friction during vibration and cyclic loading.
Implementation Method 1
Incorporation of a resilient element, such as an elastomeric o-ring, at the interface between the foot and the ferrule, which increases friction and maintains contact between interfacing surfaces to resist loosening
Data Source
AI summary
Installation of a removable tripod foot is facilitated by a cross-axis aperture in the foot and loosening of the threaded connection of the foot and the tripod's leg is resisted by a resilient element engaging interfacing surfaces of the foot and the leg.