Vehicle Seat Backrest Memory Device Integration
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Solution Overview
Problem
Existing vehicle seats are complex in design, heavy, and lack a compact construction that integrates a memory device within the backrest side parts for easy access and comfort adjustments.
Innovation Solution
A vehicle seat with a coaxially arranged locking mechanism and memory device that converts rotational movement into translational movement, allowing for compact design and integration within the side parts, featuring a linearly adjustable coupling and an unlocking lever for easy entry and comfort adjustments, utilizing plastics parts and a cam-controlled latching mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the memory device and locking mechanism are arranged separately, then the design is simple and maintenance is easy, but the vehicle seat becomes heavy and occupies more space
Solution Approach 1:
The patent combines the memory device and locking mechanism into a single integrated unit that is coaxially arranged. The memory device is positioned within the side parts of the backrest, sharing the same axial space as the locking mechanism, thereby reducing overall volume while maintaining functional independence through modular internal design
Solution Approach 2:
The memory device is nested within the side parts of the backrest structure, utilizing the existing spatial framework. The coaxial arrangement allows the memory device to be housed within the same structural envelope as the locking mechanism, effectively nesting functional components to minimize space occupation
2Strength
If the backrest is made heavy, then the structural strength is improved, but the ease of adjusting the backrest is reduced
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated memory device that uses electrical actuators to rotate the backrest between positions. This substitution maintains structural strength while dramatically improving ease of operation, as the system automatically returns the backrest to its memorized position without requiring manual force
Solution Approach 2:
The memory device enables the backrest to automatically return to its original position after being adjusted to the easy entry position. The system serves itself by detecting the position change and autonomously actuating the adjustment mechanism, eliminating the need for manual intervention and improving operational ease
3Volume of moving object
If the memory device is integrated within the side parts of the backrest, then the construction is compact and space is saved, but the device complexity increases
Solution Approach 1:
The memory device is segmented into modular functional units including sensors, actuators, and control circuits that are independently positioned within the side parts of the backrest. This segmentation allows for compact integration while simplifying manufacturing and maintenance, as each module can be produced and tested separately before assembly
Solution Approach 2:
The integrated memory device performs multiple functions including position detection, automatic adjustment, and memory storage within a single compact unit. The coaxial arrangement with the locking mechanism allows shared structural support and control systems, reducing overall device complexity despite the multi-functional requirements
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 solution enables a lightweight, compact vehicle seat with simplified access to rear seats, ensuring the backrest returns to its original position automatically, enhancing comfort and accessibility while maintaining a compact and efficient construction.
Implementation Method 1
the device has a means which, on the adjustment of the backrest from the use position into the easy entry position, converts a rotational movement into a pure translational movement
Implementation Method 2
the backrest having a locking mechanism which locks the backrest in the desired use position
Implementation Method 3
A control element, for example a cam, which very particularly preferably controls a latching pawl, is preferably provided on the coupling
Data Source
AI summary
A vehicle seat includes a seat component and a back rest which, in the position of use of the back rest, can be rotated relative to the seat component, out of the position of use and into an easy entry position, for comfort purposes and for simplified access to the rear seats. The back rest has a locking mechanism which locks the back rest in the desired position of use and which is provided with a device which interacts with the locking mechanism and locks the back rest automatically in the original desired position of use as it leaves the easy entry position.