Accelerator Device Stopper Positioning for Structural Strength
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Solution Overview
Problem
Conventional accelerator devices are prone to excessive deformation or breakage when a large load is applied, such as during sudden acceleration or braking, due to the weak structural area where the fully open stopper is typically located, leading to potential loss of normal function.
Innovation Solution
The accelerator device incorporates a fully open stopper positioned on the outer wall surface of the case at a location with higher strength, outside the internal accommodation space, which connects the pad and internal movable mechanism, ensuring the stopper is not within the weaker area and thus less likely to deform or break.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the fully open stopper is positioned within the internal accommodation space area, then the device structure is simplified, but the structural strength is reduced leading to excessive deformation or breakage under large loads
Solution Approach 1:
The fully open stopper is repositioned from the internal accommodation space area to the outer wall surface at the outer circumference, changing the spatial dimension of its location. This dimensional relocation places the stopper in a region with higher structural strength while maintaining its functional role in defining the fully open position of the accelerator.
2Strength
If the fully open stopper is positioned at the outer circumference area, then the structural strength is increased preventing deformation or breakage, but the device complexity increases
Solution Approach 1:
The outer wall surface of the case serves multiple functions: it provides structural strength for the fully open stopper, defines the boundary of the internal accommodation space, and maintains the overall protective enclosure. By utilizing the outer wall surface for the stopper positioning, the design achieves enhanced strength without adding separate structural elements, thus avoiding increased device complexity.
Data Source
AI summary
An accelerator device includes a pad, a case having an internal accommodation space, an internal movable mechanism, and an arm configured to connect the pad and the internal movable mechanism. When the case is viewed from the side of the pad, a fully open stopper is provided on an outer wall surface of the case at a position in an outer circumference of an area that overlaps with the internal accommodation space.