Vehicle Pedal Module Housing Layout for Stable Brake Pedal Swing
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Solution Overview
Problem
Existing vehicle pedal modules face challenges in stabilizing the swing of the brake pedal and ensuring the reliability of the output signal from the brake pedal sensor, particularly due to deformation of the brake pedal housing under high loads.
Innovation Solution
The vehicle pedal module integrates a brake pedal device and an accelerator pedal device with separate housings for the brake pedal rotating shaft and the reaction force generation mechanism, allowing for the selection of materials with sufficient strength and rigidity. The brake pedal second housing extends to fix part of the accelerator pedal device, maintaining the positional relationship between the pedals during mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common bracket is used to fix both brake pedal and accelerator pedal, then the device complexity is reduced, but the reliability of brake pedal swing stability deteriorates due to deformation under high loads
Solution Approach 1:
The patent divides the original common bracket into separate housings: a brake pedal housing that rotatably supports the brake pedal rotating shaft, and an accelerator pedal housing that supports the accelerator pedal. This segmentation isolates the brake pedal mechanism from deformation issues, ensuring stable swing and reliable sensor signals while maintaining reasonable structural complexity through modular design.
2Ease of manufacture
If a single housing is used for the brake pedal mechanism, then the manufacturing process is simplified, but the manufacturing precision deteriorates due to difficulty in ensuring sufficient strength and rigidity in specific areas
Solution Approach 1:
The brake pedal mechanism is divided into separate housings (brake pedal housing and accelerator pedal housing), each optimized for specific functions. This allows targeted manufacturing processes for each housing to achieve sufficient strength and rigidity where needed, while keeping the overall manufacturing process manageable through modular assembly.
Solution Approach 2:
Each housing is designed with specific structural characteristics suited to its function: the brake pedal housing provides stable rotational support for the brake pedal shaft, while the accelerator pedal housing accommodates its own mechanism. This local optimization ensures each component has the necessary strength and rigidity without requiring the entire structure to be over-engineered.
Data Source
AI summary
A vehicle pedal module includes a brake pedal device and an accelerator pedal device. The brake pedal device has a brake pedal first housing configured to rotatably support a brake pedal rotating shaft and to cover a brake-pedal reaction force generation mechanism, and a brake pedal second housing configured to support an end portion of the brake-pedal reaction force generation mechanism opposite to the brake pedal. The brake pedal second housing extends from the brake pedal device to the accelerator pedal device, to have at least a part of the accelerator pedal device fixed thereto, and to be installed on a vehicle body.