Vehicle Pedal Bracket Deformation Allowing Part
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Solution Overview
Problem
Existing vehicle operation pedal devices face operational failures due to positional shifts between the dash panel and vehicle body side members, leading to deformation of side plates and potential failures in pivoting operations and positional precision of the operation pedal.
Innovation Solution
A vehicle operation pedal device with a pedal bracket secured to a dash panel and a vehicle body side member at two different locations, featuring side plates with a deformation allowing part of lower rigidity than other portions, which absorbs shifts in the attachment position, maintaining the operational integrity of the pedal and intermediate lever.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the pedal bracket is rigidly secured to the dash panel and vehicle body side member, then the structural strength and stability are improved, but positional shifts cause deformation of side plates and operational failures
Solution Approach 1:
The side plate is designed with non-uniform rigidity: a first portion near the support shaft maintains high rigidity for stable pivoting, while a second portion at the attachment position has lower rigidity to absorb positional shifts. This local differentiation resolves the contradiction by allowing the structure to be both strong and adaptable.
Solution Approach 2:
The rigidity parameter of the side plate is changed spatially, creating a deformation allowing part with reduced rigidity at the attachment position. This enables the side plate to accommodate positional variations between the dash panel and vehicle body side member while maintaining overall structural integrity.
2Stability of the object's composition
If the side plate is made uniformly rigid, then the pivoting operation stability is improved, but positional shifts lead to deformation and operational failures
Solution Approach 1:
The side plate transitions from uniform rigidity to localized rigidity distribution. The first portion maintains high rigidity for pivoting stability, while the second portion has lower rigidity to accommodate positional shifts, preventing deformation and operational failures.
Solution Approach 2:
The side plate is functionally segmented into two portions: a rigid first portion for stable pivoting and a flexible second portion for absorbing positional shifts. This segmentation allows each portion to fulfill its specific function optimally.
3Manufacturing precision
If the attachment position is precisely controlled, then the positional precision of the operation pedal is maintained, but manufacturing complexity and cost increase
Solution Approach 1:
Instead of controlling attachment position precision through manufacturing processes, the invention changes the rigidity parameter of the side plate. The deformation allowing part with lower rigidity automatically accommodates positional variations, eliminating the need for precise attachment positioning and reducing manufacturing complexity.
Solution Approach 2:
The requirement for precise attachment position control is extracted from the design constraints. The deformation allowing part absorbs positional shifts, making precise attachment positioning unnecessary and simplifying manufacturing.
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 device ensures smooth pivoting operations and maintains positional precision of the operation pedal even with shifts, preventing failures and ensuring proper operation by absorbing positional changes through the deformation allowing parts.
Implementation Method 1
a deformation allowing part that is a lower rigidity than other portions of the side plate, wherein the deformation allowing part is formed between an attachment/securing part where the pedal bracket is fastened and secured with respect to the vehicle body side member and the support shaft located on the vehicle rear side
Data Source
AI summary
A brake pedal device includes a pedal bracket, an operation pedal, an intermediate lever, and a coupling link. The pedal bracket includes a first side plate member and a second side plate member secured to a dash panel and arranged at interval in a vehicle width direction, and is fastened and secured with respect to a vehicle body side bracket located on a vehicle rear side by a nut and a bolt at one location. The first side plate member and the second side plate member include a deformation allowing part and a deformation allowing part between a first support shaft located on a rearward side among the first support shaft and a second support shaft, and an attachment/securing part and an attachment/securing part.