Configurable Shifter Assembly for Multiple Transmissions
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Solution Overview
Problem
Aftermarket manufacturers face challenges in producing multiple shifter assemblies to accommodate various automatic transmission configurations, including different gear settings and cable orientations, leading to unnecessary duplication of parts and expense, as well as forcing car owners to purchase new shifters when changing transmissions.
Innovation Solution
A selectively configurable shifter assembly with overlapping gate plates that can be assembled into different configurations to adapt to two-speed, three-speed, or four-speed transmissions, and can accommodate both forward and reverse shift patterns, as well as front exit and rear exit cable orientations, without requiring replacement of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple shifter assemblies are manufactured to accommodate different transmission configurations, then adaptability to various transmissions is improved, but manufacturing complexity and inventory costs increase
Solution Approach 1:
The shifter assembly is divided into modular components including a base assembly, cable assembly, and gate plate assembly that can be independently configured. The gate plate specifically segments the gear selection mechanism into interchangeable elements that define different shift patterns, allowing a single base assembly to support multiple transmission configurations through component reconfiguration rather than manufacturing entirely separate shifters for each application.
Solution Approach 2:
The shifter assembly is designed with universal adaptability through standardized mounting interfaces and reconfigurable gate plates that can accommodate multiple transmission types (2-speed, 3-speed, 4-speed) and cable orientations (front exit, rear exit). This multi-functionality allows a single shifter design to replace what would traditionally require multiple specialized shifter assemblies, reducing both manufacturing complexity and inventory requirements while maintaining broad compatibility.
2Device complexity
If a single shifter assembly design is used for all transmissions, then manufacturing complexity is reduced, but adaptability to different gear settings and cable orientations deteriorates
Solution Approach 1:
The shifter assembly incorporates dynamic reconfigurability through the gate plate mechanism, which can be adjusted and repositioned to define different shift patterns. The gate plate's ability to be reconfigured allows the static base assembly to adapt dynamically to various transmission requirements, enabling a single manufacturing design to serve multiple applications without compromising compatibility.
Solution Approach 2:
The adaptability is achieved through changing the geometric parameters of the gate plate configuration rather than altering the fundamental shifter design. By modifying the gate plate's position, orientation, and engagement points, the same shifter assembly can accommodate different gear settings (2-speed, 3-speed, 4-speed) and cable orientations, allowing parameter-based adaptation instead of structural redesign.
3Adaptability or versatility
If multiple shifter configurations are stocked for different applications, then customer specificity is improved, but inventory costs and duplication of expense increase
Solution Approach 1:
The invention merges multiple shifter configurations into a single unified assembly design. Instead of maintaining separate inventory stocks for front exit/rear exit cable orientations and different speed configurations, the modular design allows all these variations to be derived from one base assembly through component reconfiguration. This consolidation eliminates redundant inventory while maintaining the ability to serve specific customer transmission requirements.
Solution Approach 2:
The design enables the recovery and reuse of the base shifter assembly across different transmission applications. When adapting to a new transmission type, the durable base assembly and cable components can be retained and reused, while only the gate plate configuration needs to be changed. This approach discards the notion of disposable or application-specific entire assemblies, instead recovering valuable components for repeated use across different configurations.
Data Source
AI summary
A shifter assembly configurable for multiple automatic vehicle transmissions comprises a housing, a base mounted within the housing, a shift handle pivoted to the base, and first and second gate plates selectively mountable to the base in differing configurations cooperatively forming differing shift gates for differing gear shift patterns adapted to differing automatic vehicle transmissions for reverse or forward shift patterns. The base, handle, and gate plates are selectively mountable as a unit within the housing in differing orientations relative to a cable-receiving opening in the housing to facilitate installation within a vehicle with the cable extending from the housing in either a forward or a rearward direction.