Hook-Pin Attachment for Vibration and Thermal Expansion Tolerance
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Solution Overview
Problem
Existing attachment systems for components, such as electric fans and charge air coolers, are complicated to install due to alignment requirements, tolerance variations, and vibration issues, often necessitating special tools and multiple personnel, and fail to accommodate thermal expansion and vibration effectively.
Innovation Solution
A hook and pin attachment system where a hook member with an upper and lower part and a pin member with a rectangular cross-section are used, allowing for secure attachment without external fasteners, with an optional intermediate bushing for vibration reduction and thermal expansion accommodation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fasteners (screws or bolts) are used to attach components, then the attachment can be secure, but the installation process becomes complicated requiring alignment, special tools, and multiple personnel
Solution Approach 1:
The attachment system is divided into two separate components: a hook member attached to one component and a pin member attached to another. This segmentation allows each component to be independently positioned and attached, eliminating the need for complex alignment procedures required by traditional fasteners. The hook and pin can be attached separately and then connected, simplifying the installation process while maintaining secure attachment.
Solution Approach 2:
The hook member acts as an intermediary element between the two components to be attached. Instead of directly aligning and fastening two components together with screws or bolts, the hook member provides a mediating structure that receives the pin member, facilitating easier connection while ensuring secure attachment. This intermediary approach eliminates the need for precise alignment and special tools.
2Manufacturing precision
If components are attached with tight tolerances to ensure precision, then the attachment is accurate, but the system cannot accommodate thermal expansion and vibration
Solution Approach 1:
The attachment system incorporates dynamic characteristics through the interaction between the hook member and pin member. The connection allows for controlled movement and adjustment, enabling the system to accommodate thermal expansion and vibration while maintaining secure attachment. The design permits slight movements without compromising the integrity of the connection, providing both precision and adaptability.
Solution Approach 2:
The system allows for parameter changes in the form of positional adjustments between the hook member and pin member. This flexibility enables the attachment to accommodate variations in dimensions due to thermal expansion and vibration while maintaining secure connection. The design tolerates parameter variations without requiring tight manufacturing tolerances, achieving both accuracy and adaptability.
3Reliability
If traditional fastening methods are used, then the components can be attached, but the process requires special tools and multiple personnel
Solution Approach 1:
The hook and pin attachment system is designed to be self-servicing, allowing for easy attachment and detachment without requiring special tools or multiple personnel. The components can be connected by simply inserting the pin member into the hook member, and disconnected by removing the pin. This self-service design eliminates the complexity associated with traditional fastening methods while maintaining reliable attachment capability.
Solution Approach 2:
The hook and pin members are designed as simple, inexpensive components that can be easily manufactured and replaced if needed. Rather than using complex, expensive fastening systems requiring special tools, the invention employs simple geometric shapes that achieve the same attachment function with greater simplicity and lower cost, reducing overall system complexity.
4Stability of the object's composition
If components are designed to be rigid and stable, then they maintain structural integrity, but they cannot accommodate vibration and thermal expansion
Solution Approach 1:
The attachment system incorporates cushioning characteristics through the flexible connection between the hook member and pin member. This design anticipates and accommodates the effects of vibration and thermal expansion by allowing controlled movements at the connection point, protecting the overall structure from the harmful effects of these factors while maintaining structural integrity.
Solution Approach 2:
The connection between the hook member and pin member provides a flexible joint that can accommodate vibrations and thermal expansion. This flexible connection allows the rigid components to maintain their structural integrity while the attachment point absorbs the effects of vibration and thermal changes, protecting the overall assembly from these harmful factors.
Data Source
AI summary
An attachment system is provided for attaching a first component to a second component and includes a hook member attachable to the first component, and a pin member attachable to the second component, the pin member including a first member and a second member attached to and extending perpendicular to the first member. The second member is received through a gap in the hook member and in an opening of the first member to place the pin member in a mounting orientation relative to the gap the pin member is pivoted to a securing orientation relative to the opening in Which position the second member is blocked from being removed from the opening by portions of the hook member.