Electronic Shift Drive Rack Layout for Longer Stroke in Tight Space
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic shift drivers are limited in their ability to provide external driving force for shifting functions beyond P gear, making them unsuitable for automatic gearboxes without technical retrofitting, and they cannot efficiently extend their stroke length within the constrained assembly space.
Innovation Solution
A shift drive mechanism featuring a rack with a recoverable deformation end portion and a gear housing with a take-up release section, allowing the rack to slide in and out of the track slot to extend its stroke length while maintaining the same space, and adjustable curvature to accommodate different gearbox lengths, enabling application to automatic gearboxes without retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the track length is lengthened to extend the stroke of the protrusion, then the stroke length is improved, but the volume of the electronic shift driver increases
Solution Approach 1:
The track is designed with a curved configuration instead of a straight line, allowing the rack to follow a curved path. This curvature enables the protrusion to achieve a longer stroke length while the rack remains contained within a compact gear housing, thus extending the stroke without proportionally increasing the overall volume of the electronic shift driver.
Solution Approach 2:
The track extends in multiple spatial dimensions rather than solely in a linear direction. By utilizing three-dimensional space with curved and multi-directional track segments, the system achieves an extended stroke length that effectively uses available internal volume without requiring a larger external footprint.
2Length of moving object
If different track lengths are designed for different gearboxes, then the stroke length is improved, but the product modularization is compromised
Solution Approach 1:
The track configuration is designed to be adjustable or reconfigurable, allowing the same gear housing and rack assembly to accommodate different effective track lengths through selective engagement points or adjustable mounting positions. This dynamic adaptability enables a single modular design to serve multiple gearbox applications with varying stroke requirements.
Solution Approach 2:
The gear housing and track assembly are designed as a universal module that can be adapted to different gearbox types and stroke requirements. The standardized interface and configurable track arrangement allow the same basic module to provide appropriate stroke lengths for various applications, maintaining product modularization while meeting diverse customer needs.
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 shift drive achieves extended stroke length, allowing it to perform shifting functions for P, R, N, and D gears in automatic gearboxes, enhancing versatility and modularization without increasing volume, thus enabling electronic shifting in existing automatic gearbox configurations.
Implementation Method 1
a rack (3) linked with the actuating mechanism (6), at least one end of the rack (3) being capable of a recoverable deformation
Data Source
AI summary
A shift drive including an actuating mechanism, a rack, and a gear housing. The actuating mechanism is driven by a driving mechanism. The rack is linked with the actuating mechanism. The rack includes a connection portion connected to the actuating mechanism through a connecting member 301 The gear housing is provided with an induction gear that meshes with the rack. The gear housing includes a track slot includes a take-up release section and a straight rail section, and an end portion of the rack is capable of a recoverable deformation that can slide in or out of the take-up release section and the length of projection of the take-up release section on an extension line in the direction of the length of the straight rail section is less than the length of the track thereof.