Accelerator Device Single Cushioning Member Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing accelerator devices require separate cushioning members for collisions in both fully-closed and fully-open states, increasing the number of parts and complexity.
Innovation Solution
Incorporating a single cushioning member that functions as a buffer for collisions in both states by strategically positioning it between the pedal and the front wall in the fully-closed state and between the pad and the front wall in the fully-open state, reducing the number of parts needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate cushioning members are provided for collisions in fully-closed and fully-open states, then collision buffering reliability is improved, but device complexity and number of parts increase
Solution Approach 1:
The single cushioning member is designed to perform multiple functions: it buffers collisions in the fully-closed state between the pedal and front wall, and also buffers collisions in the fully-open state between the pad and front wall. This multi-functional design eliminates the need for separate cushioning members for each collision scenario, reducing part count while maintaining reliable collision buffering across all operating states
Solution Approach 2:
The invention merges the functions of two separate cushioning members (one for fully-closed state and one for fully-open state) into a single integrated cushioning member. By combining these collision buffering functions into one component, the device complexity is reduced while still providing adequate protection against collisions in both accelerator states
2Device complexity
If a single cushioning member is used for both fully-closed and fully-open states, then device complexity is reduced, but cushioning effectiveness for both states may be compromised
Solution Approach 1:
The cushioning member is designed with specific local characteristics: it is positioned and dimensioned to provide appropriate cushioning force at the fully-closed state (between pedal and front wall) and also at the fully-open state (between pad and front wall). The local quality of the cushioning member's material properties, geometry, and positioning ensures effective collision buffering for both states without requiring separate specialized components
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
Effectively buffers collisions in both states with a single component, reducing the overall number of parts and simplifying the device's design while maintaining functionality.
Implementation Method 1
a cushioning member provided in the front wall to be inserted between the pedal or the arm and the front wall in an accelerator fully-closed state, and to be inserted between the pad and the front wall in an accelerator fully-open state
Data Source
AI summary
An accelerator device includes a pad configured to receive an input force from a driver, a case attachable to a vehicle body and having a front wall facing the pad, and an internal movable mechanism housed in the case. The internal movable mechanism includes a shaft that is rotatably supported in the case and a pedal extending outward from an outer peripheral portion of the shaft. An arm is arranged to pass through an opening provided in the front wall and to connect the pad and the pedal, and a cushioning member is provided in the front wall, to be inserted between the pedal or the arm and the front wall in an accelerator fully-closed state, and to be inserted between the pad and the front wall in an accelerator fully-open state.