Vehicle Floor Mat Fastener with Multi-Point Load Distribution
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Solution Overview
Problem
Existing vehicle floor mat fastening devices concentrate load on a single attachment point, risking expansion of the attachment hole and disengagement of grommets, especially when the mat exhibits elastic properties, and can catch carpet pile between grommet components, requiring careful installation to avoid pile entanglement.
Innovation Solution
A vehicle floor mat design featuring a fastening device with a second fastening member that includes upper and lower half bodies connected through a half-body connecting portion and outer connecting portions, distributing load and preventing carpet pile entanglement by using bended guiding sections and extending portions to securely engage the half bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single attachment hole is used to connect grommets, then the fastening device structure is simple, but the attachment hole expands and grommets disengage when the mat exhibits elastic properties
Solution Approach 1:
The fastening device is divided into multiple independent connection points: a central half-body connecting portion and multiple outer connecting portions. This segmentation distributes the load across multiple attachment holes in the mat, preventing any single hole from expanding under elastic deformation and maintaining reliable grommet engagement throughout the fastening device.
2Reliability
If grommet components are closely fitted to secure the mat, then the engagement reliability is improved, but carpet pile becomes entangled between grommet components during installation
Solution Approach 1:
An extending portion acts as an intermediary element that protrudes from the mat surface and guides the insertion of grommets. This intermediary structure creates a controlled pathway that prevents carpet pile from becoming entangled between grommet components during installation, while still maintaining secure engagement through the bended guiding section that ensures proper positioning.
3Device complexity
If load is concentrated on a single attachment point, then the fastening device structure is simple, but the attachment hole expands and disengagement occurs under elastic mat deformation
Solution Approach 1:
The fastening device structure is segmented into multiple load-bearing connection points including a central half-body connecting portion and several outer connecting portions. This segmentation distributes mechanical loads across multiple attachment holes in the mat, preventing localized stress concentration that would cause hole expansion and grommet disengagement under elastic deformation conditions.
Solution Approach 2:
The fastening device transitions from a single-point attachment to a multi-point spatial distribution pattern. By arranging connecting portions in different locations and orientations across the mat surface, the device creates a three-dimensional load distribution network that enhances attachment strength while accommodating mat elasticity without failure.
Data Source
AI summary
Provided is a vehicle floor mat reducing a load on a mat main body. The vehicle floor mat includes at least one fastening device for fastening the mat main body to a vehicle. The fastening device includes a first fastening member fixed to the vehicle and a second fastening member fixed to the mat main body. The first fastening member includes a vertical rotating knob, and the second fastening member includes: an insertion receiving section for the rotating knob to be inserted thereinto and engaged therewith; and upper and lower half bodies sandwiching the mat main body and being connected to each other through a half body connecting portion for the rotating knob to be inserted thereinto and at least one outer connecting portion disposed outside the half body connecting portion provided around the insertion receiving section, thus improving a connecting strength between the upper and lower half bodies.