Grommet Arm Feedback Structure for Fast Installation Cues
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Solution Overview
Problem
Existing grommet fasteners require high force and slow acceleration for installation, lack clear feedback to operators during the process, and do not provide adequate audible and tactile cues for successful installation.
Innovation Solution
A grommet design featuring a body with arms that include a feedback feature, such as a protrusion or notch, which acts as a catch point to cause hesitation and quick release during installation, providing both tactile and audible feedback to the operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grommet is designed to require constant high force and slow acceleration for insertion, then the grommet can be securely installed in the panel, but the installation process becomes time-consuming and lacks clear feedback to the operator
Solution Approach 1:
The grommet design incorporates dynamic characteristics through the interaction between the angled wall and panel surface, creating a natural acceleration process. The geometry allows the insertion force to transition from high initial force to rapid acceleration, eliminating the need for sustained high force while maintaining secure installation. This dynamic approach resolves the contradiction between reliable installation and installation speed.
2Device complexity
If a grommet is designed without explicit installation indication, then the structure remains simple, but the operator cannot determine when the grommet is properly installed
Solution Approach 1:
The grommet design provides inherent feedback through the interaction between the angled wall and the panel surface. As the grommet is inserted, the operator experiences tactile feedback through the resistance and release mechanism, and audible feedback through the characteristic sound of the grommet engaging with the panel. This feedback mechanism confirms proper installation without adding structural complexity, resolving the contradiction between simple design and installation status indication.
3Reliability
If a grommet requires constant high force for insertion, then the grommet can be securely installed, but the installation process lacks tactile and audible feedback cues
Solution Approach 1:
The dynamic insertion process creates natural feedback cues. The transition from high initial force to rapid acceleration generates tactile feedback that the operator can feel, and the engagement of the grommet with the panel produces audible feedback. This dynamic process maintains installation security while providing clear operational feedback, resolving the contradiction between reliable installation and ease of operation.
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 grommet design enables rapid acceleration and greater impact during installation, offering clear tactile and audible feedback, thus enhancing the efficiency and confidence of the installation process.
Implementation Method 1
a plurality of arms extending from the body at a flexure joint
Data Source
AI summary
A fastener or grommet is configured to securely clamp together one or more components. The fastener includes a body having a longitudinal axis and at least one wall. The body further includes two arms extending from the body on opposite sides at a flexure joint. Each of the arms includes a feedback feature that causes hesitation in the fastener during installation. The feedback feature further comprises an arched profile that extends the entire width of each of the arms.