Integrated Grommet-Pin Fastener for One-Motion Assembly
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Solution Overview
Problem
Existing fastener assemblies for automobiles require multiple separate components, increasing production costs and exposing unattractive internal components, which decreases marketability.
Innovation Solution
A fastener assembly with a grommet and pin integrally formed, where the connection tip is severed upon insertion, allowing for single-motion fixing and esthetic enhancement by exposing only the pin head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple separate components (nuts and bolts, blind rivets) are used to fix objects together, then the fastening function is achieved, but the manufacturing cost increases and internal components become exposed which decreases marketability
Solution Approach 1:
The patent combines the grommet and pin into a single integrated fastener assembly. The grommet includes a head with a through-hole and legs, while the pin includes a shaft and head that are integrally formed. This merging of components reduces the total number of parts, simplifies manufacturing, and eliminates the need for separate fastening components like nuts and bolts.
Solution Approach 2:
The integrated fastener assembly performs multiple functions: the grommet provides structural support and mounting capability with its head and legs, while the pin provides the fastening function. The connection tip integrates both components into a universal fastening solution that replaces multiple separate components with a single multi-functional unit.
2Productivity
If multiple separate components are used, then fastening is achieved, but assembly time and production costs increase
Solution Approach 1:
By integrating the grommet and pin into a single component, the patent eliminates the need for separate assembly steps. The fastener can be installed in one motion, significantly reducing assembly time compared to using multiple separate components that would require multiple installation steps.
Solution Approach 2:
The grommet and pin are pre-integrated into a single unit during manufacturing. This preliminary integration means that during assembly, the entire fastening function is achieved in one installation action, eliminating the need for sequential assembly of multiple components.
3Ease of manufacture
If separate components are used, then fastening function is provided, but unattractive internal components are exposed decreasing marketability
Solution Approach 1:
The integration of grommet and pin into a single sleek component creates a more aesthetically pleasing appearance. The unified design eliminates visible seams, joints, and multiple components that would be exposed in traditional multi-component fasteners, thereby improving marketability.
Data Source
AI summary
A fastener assembly of the present disclosure includes a grommet including a head having a through-hole formed therein and at least one leg extending downward from the head; and a pin configured with a head and a shaft inserted into the grommet. The grommet and the pin are integrally formed by a connection tip.