Metallic Nut Retainer Cage with Bent Tabs for Hydraulic Systems
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Solution Overview
Problem
Existing mechanical fastener retainer systems fail to securely hold nuts in place on threaded posts, leading to potential unthreading and loss of tension, especially in applications involving hydraulic and pneumatic control systems.
Innovation Solution
A metallic nut retainer with a hexagonal configuration and bent tabs is used, which can be elastically deformed to fit over conventional hexagonal nuts, and secured with safety wire to prevent unthreading by locking the tabs together and applying a tensile force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing mechanical fastener retainer systems are used, then installation is simple, but they fail to securely hold nuts in place leading to unthreading and loss of tension
Solution Approach 1:
The retainer is divided into multiple independent tabs (first tab, second tab, third tab, fourth tab) that can be independently deformed and positioned. Each tab can be individually bent to engage with corresponding features on the nut, allowing secure retention while maintaining ease of installation through sequential deformation
Solution Approach 2:
The retainer utilizes elastic deformation of its tabs during installation and operation. The tabs are dynamically bent to engaged positions and can elastically recover to maintain constant engagement force, providing secure nut retention while allowing simple installation through controlled deformation
2Reliability
If tabs are bent to secure the nut retainer, then reliability of nut retention is improved, but the structure becomes more complex
Solution Approach 1:
Multiple retention functions are merged into a single integrated retainer structure. The first tab engages with the first feature, the second tab with the second feature, and the third and fourth tabs work together to secure the nut, combining multiple retention mechanisms into one unified component that prevents nut unthreading through coordinated tab engagement
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 effectively secures nuts on threaded posts, preventing unthreading and maintaining tension, even in dynamic applications like hydraulic and pneumatic control systems, while allowing for easy installation without plastic deformation of the retainer.
Implementation Method 1
A metallic nut retainer with a hexagonal configuration and bent tabs is used, which can be elastically deformed to fit over conventional hexagonal nuts
Implementation Method 2
secured with safety wire to prevent unthreading by locking the tabs together and applying a tensile force
Data Source
AI summary
A nut retainer for a fastener. The nut retainer may include one or more vertical support members that can mate with and receive vertical surfaces of the fastener. The nut retainer may also include one or more horizontal retaining members that can be coupled to at least one end of one or more of the vertical support members adapted to mate with and receive horizontal surfaces of the fastener.