Vehicle Seat Locking Assembly With Integrated Actuation Support
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Solution Overview
Problem
Existing vehicle seats with torsion bar springs or stem assemblies are heavy, space-consuming, complex to assemble, and costly due to metal components, making assembly difficult in limited installation spaces and increasing cycle times.
Innovation Solution
A vehicle seat design featuring a separate supporting element mounted on a structural element, allowing for assembly in limited space without screws or rivets, and providing form-fitting connections to support and secure the actuation element during pivoting movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional supporting elements like torsion bar springs or stem assemblies are used, then the actuation element can be supported during pivoting movement, but the supporting elements become heavy, space-consuming, and complex to assemble
Solution Approach 1:
The supporting element is extracted from the traditional complex metal assembly (torsion bar springs or stem assemblies) and implemented as a simple recess in the structural element. This extraction eliminates the need for separate supporting components, reducing assembly complexity while maintaining the support function during actuation element pivoting movement.
Solution Approach 2:
The supporting element function is merged with the structural element by forming a recess directly in the structural element. This integration eliminates the need for separate supporting components and their associated metal connections (screws, rivets), thereby reducing device complexity and assembly steps while providing the necessary support during actuation.
2Reliability
If traditional supporting elements are used, then the actuation element can be supported, but they require metal materials and metal connection means such as screws
Solution Approach 1:
The supporting element is extracted from traditional metal-based implementations (torsion bar springs, stem assemblies with screws) and realized as a simple recess formed directly in the structural element. This eliminates the need for metal connection means and simplifies manufacturing while maintaining the support function.
Solution Approach 2:
The structural element provides its own supporting function through the recess, eliminating the need for separate supporting components. The recess itself serves as the supporting element, reducing the number of parts and simplifying both manufacturing and assembly processes.
3Reliability
If the supporting element is arranged under the seat surface close to the rail, then it supports the actuation element during pivoting movement, but the installation space is essentially limited
Solution Approach 1:
The supporting element function is merged with the structural element by forming a recess directly in it. This integration allows the support function to be achieved within the existing structural footprint under the seat surface, utilizing the available installation space efficiently without requiring additional components that would consume extra space.
Solution Approach 2:
The supporting element is extracted as a separate component and instead implemented as a recess in the structural element. This eliminates the need for additional space-consuming supporting components while maintaining the support function in the limited installation space under the seat surface.
4Reliability
If torsion bar springs are used as supporting elements, then the actuation element can be supported, but they are difficult to assemble and require the actuation element to be very long
Solution Approach 1:
The supporting element is extracted from the torsion bar spring implementation and realized as a recess in the structural element. This eliminates the need for the actuation element to be very long for winding purposes, as the recess provides direct support without requiring the actuation element to extend significantly for assembly.
Solution Approach 2:
The structural element with its recess provides the supporting function directly, eliminating the need for separate torsion bar springs. This simplifies the actuation element design, allowing it to be shorter since it doesn't need to accommodate winding operations for torsion bar assembly.
Data Source
AI summary
It is provided a vehicle seat having a longitudinal adjustment assembly for adjusting the vehicle seat along a longitudinal axis, wherein the longitudinal adjustment assembly comprises a locking device for locking the vehicle seat in a seat longitudinal position along the longitudinal axis, a pivotable actuation element having an actuation portion and a coupling portion, wherein an adjustment force for actuating the locking device can be introduced into the actuation element via the actuation portion and the coupling portion is provided for transmitting the adjustment force to the locking device, and a supporting element for supporting the actuation element during a pivoting movement of the actuation element, which pivoting movement is to be carried out for the transmission of the adjustment force to the locking device. The supporting element is formed by a separate component mounted on a structural element of the vehicle seat.