Modular Steering Housing Layout for LHD/RHD Angle Flexibility
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Solution Overview
Problem
Conventional rack-motor driven power steering systems require separate molds and extensive production time for left-hand drive (LHD) and right-hand drive (RHD) vehicles, leading to high manufacturing costs and interference with peripheral parts due to fixed mounting directions and angles.
Innovation Solution
A modular steering system with detachable and adjustable steering and reducer housings, allowing for flexible assembly and angle adjustment to accommodate both LHD and RHD vehicles, avoiding interference with peripheral components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate rack housings are manufactured for LHD and RHD vehicles using traditional molding, then the mounting structure can be optimized for each specific configuration, but manufacturing costs increase and production time extends
Solution Approach 1:
The rack housing is divided into multiple detachable modules: a central rack housing body, a steering housing, and a reducer housing. These modules can be assembled in different configurations to accommodate both LHD and RHD vehicles, eliminating the need for separate molded housings for each configuration.
Solution Approach 2:
The standardized rack housing body is designed to accept both steering and reducer housings on either side, making it a universal base component that can be configured for different drive types (LHD/RHD) and different mounting positions, replacing the need for configuration-specific molded housings.
2Ease of manufacture
If the rack housing is manufactured as a single integrated structure, then manufacturing complexity is reduced, but adaptability to different mounting positions and angles is lost
Solution Approach 1:
The integrated rack housing is segmented into detachable modules (rack housing body, steering housing, reducer housing) that can be independently positioned and oriented. This allows the same standardized body to be adapted to different mounting positions and angles by reconfiguring the modular components.
Solution Approach 2:
The mounting structure incorporates adjustable and reconfigurable features that allow the housing modules to be dynamically positioned at different angles and locations, providing mounting flexibility while maintaining manufacturing simplicity through standardized interfaces.
3Strength
If the steering housing is integrally formed with the rack housing, then structural strength is improved, but adjustability of the steering housing angle is eliminated
Solution Approach 1:
The steering housing is separated from the rack housing body into an independent module that can be detachably connected. This segmentation maintains the structural strength of each individual housing while enabling angle adjustment and reconfiguration of the steering housing relative to the rack housing body.
Solution Approach 2:
The detachable connection between the steering housing and rack housing body allows for dynamic adjustment of the steering housing angle. The standardized interface enables the steering housing to be positioned at different angles while maintaining structural integrity through proper connection mechanisms.
Data Source
AI summary
A modular steering system for vehicles can be applied in common to left-hand drive (LHD) and right-hand drive (RHD) vehicles and can avoid interference with peripheral parts. A steering housing and a reducer housing are separately provided to detachably assemble the steering housing and the reducer housing on the left or right of a rack bar housing and to adjust their mounting angles.