Vehicle Split Seat Lever Mechanism with Shared Pivot
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Solution Overview
Problem
In vehicle split seat configurations, particularly the 4:2:4 split structure, the compact arrangement of operation levers is challenging due to the need for three levers, leading to design issues and operational inefficiencies, especially in terms of external appearance and ease of use.
Innovation Solution
The mechanism involves connecting two operation levers via operation cables to the locking mechanisms of adjacent seat backs, forming a central and outer lever with a shared pivot support point, allowing for compact arrangement on the luggage compartment wall without compromising operability, with individual operation spaces for each lever.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If three operation levers are arranged separately on the luggage compartment walls for a 4:2:4 split seat structure, then each seat back can be operated independently, but the arrangement becomes non-compact and the external appearance deteriorates
Solution Approach 1:
The patent combines two operation levers (central lever and outer lever) into a single integrated assembly mounted on one side of the luggage compartment. Both levers share a common pivot support point and are connected to respective seat backs through operation cables, allowing independent operation while achieving compact arrangement and improved appearance.
Solution Approach 2:
The integrated lever assembly serves multiple functions: the central lever operates one seat back while the outer lever operates another seat back. Both levers are mounted on the same side wall, making the single mounting location universal for controlling multiple seat backs independently.
2Shape
If operation levers are arranged compactly with a shared pivot support point, then the external appearance is improved and space is saved, but the operability of individual levers may be impaired
Solution Approach 1:
Operation cables serve as intermediaries between the levers and the seat back locking mechanisms. The cables transmit the operating force from each lever to its corresponding seat back, enabling independent operation despite the levers sharing a common pivot support point and mounting location.
Solution Approach 2:
The lever assembly is segmented into distinct central and outer levers, each with its own operation cable and control function. This segmentation allows each lever to operate independently while maintaining the compact integrated structure.
Data Source
AI summary
The present invention provides a mechanism for operating a vehicle split seat whereby operation levers of two seat backs can be arranged compactly on a wall surface of a luggage compartment or the like such that the two operation levers have the same pivot support point, without impairing operability of the levers.Two operation levers 31, 32 are respectively connected to locking mechanisms of at least two adjacent seat backs 11B by way of operation cables 22, 23, the operation levers 31, 32 being formed of a central lever 32 and an outer lever 31 provided outside the central lever having the same pivot support point, operation parts being provided on the free end sides of arm parts of both the levers 31, 32 and operating spaces X, Y, Z which allow both the levers 31, 32 to be operated individually also being provided.