Brake Pedal Operation Detection via Elastic Member Deformation
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Solution Overview
Problem
Conventional brake pedal operation amount detecting apparatuses have complex structures that increase manufacturing costs and deteriorate maintenance properties due to the need for a turn lever and load restriction mechanisms.
Innovation Solution
An operation amount detecting apparatus that converts rotational motion of a brake pedal to linear motion using a coupling shaft and an elastic member, where the elastic member's deformation is detected to output the operation amount, simplifying the structure and incorporating a detection unit to regulate relative movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a turn lever and load restriction mechanism are used to detect brake pedal operation amount, then detection accuracy is improved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent combines the turn lever function and load restriction function into a single integrated mechanism. The turn lever directly converts pedal rotation to linear motion while its geometric configuration inherently provides load restriction, eliminating the need for separate load restriction mechanisms and reducing overall structural complexity while maintaining detection accuracy
Solution Approach 2:
The turn lever is designed to perform multiple functions simultaneously: it acts as both the rotational-to-linear motion conversion mechanism and the load restriction mechanism. This multi-functionality reduces the number of components needed and simplifies the overall device structure while preserving accurate operation amount detection
2Measurement precision
If a turn lever and load restriction mechanism are used to detect brake pedal operation amount, then detection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
By merging the turn lever and load restriction mechanism into one integrated component, the patent reduces the total number of parts that need to be manufactured, assembled, and quality-checked. This integration directly lowers manufacturing costs while maintaining the detection accuracy provided by the turn lever's geometric configuration
Solution Approach 2:
The multi-functional turn lever reduces component count and assembly complexity, leading to lower manufacturing costs. The single component performs both motion conversion and load restriction functions, eliminating the need for separate load restriction mechanisms and reducing overall production expenses
3Measurement precision
If a turn lever and load restriction mechanism are used to detect brake pedal operation amount, then detection accuracy is improved, but maintenance property deteriorates
Solution Approach 1:
The integrated turn lever mechanism with built-in load restriction function reduces the number of separate components that can fail or require adjustment. Fewer parts mean fewer potential failure points and simpler maintenance procedures, improving maintenance properties while preserving detection accuracy
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
This solution reduces manufacturing costs and simplifies the structure while enabling effective load restriction, improving maintenance properties by accurately detecting brake pedal operation amounts.
Implementation Method 1
a detection unit that detects an elastic deformation amount of the elastic member and outputs the elastic deformation amount as an operation amount
Data Source
AI summary
In an operation amount detecting apparatus, a brake pedal is coupled with an operation rod by a coupling shaft, respective end portions of an elastic member are supported at support positions of a brake pedal by support shafts, the brake pedal is away in a direction orthogonal to an axis line direction of an operation rod with respect to the coupling shaft, an intermediate portion of the elastic member is relatively displaceably coupled by the coupling shaft and a coupling hole, and the elastic member is disposed with output strain sensors which detect an elastic deformation amount of the elastic member and output the elastic deformation amount as a brake operation amount.