Vehicle Seat Fitting System Axial Shaft Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fitting systems for vehicle seat adjustments face challenges in securely fastening shafts without causing deformations and ensuring axial security in both directions without reshaping the shaft.
Innovation Solution
A fitting system where a quick fastener, made of spring steel, is connected to a driver or its securing element, ensuring axial security in both directions through a combination of frictional engagement and form-fitting hooks or lugs, allowing interaction with the shaft and driver in both orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shaft is secured axially by positive locking with special deformations, then axial security is improved, but the shaft structure becomes more complex and manufacturing difficulty increases
Solution Approach 1:
The axial securing function is divided into two separate components: a first axial securing element (quick fastener) for one direction and a second axial securing element (driver or securing element) for the opposite direction. This segmentation eliminates the need for complex deformations on the shaft while maintaining reliable axial security in both directions.
Solution Approach 2:
The quick fastener acts as an intermediary component that connects the shaft to the fitting and driver assembly. It provides axial securing through its engagement with the fitting and its connection to the driver, eliminating the need for direct positive locking deformations on the shaft itself.
2Power
If the shaft and driver are rigidly connected, then torque transmission is improved, but angular tolerance compensation is lost
Solution Approach 1:
The connection between shaft and driver is designed with controlled play or idle travel, allowing dynamic adjustment. The shaft and driver can have slight relative movements to accommodate angular tolerances, while still maintaining sufficient torque transmission through the engagement geometry.
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 system securely fastens the shaft and driver in both axial directions, preventing deformation and allowing for infinite adjustable inclination of the vehicle seat backrest without the need for reshaping the shaft, enhancing usability and durability.
Implementation Method 1
a quick fastener (50), made of spring steel, which is connected to the driver (21) or its securing element (43)
Data Source
Figure 1~6
Figure 3~5
AI summary
The invention relates to a fitting system for a vehicle seat, in particular for a motor vehicle seat, comprising an axially extending shaft (7) which can be rotated in the circumferential direction, at least one fitting (10) which comprises a driver (21) that is rotatably mounted and axially secured by means of a securing element (43) for driving or unlocking the fitting (10), wherein the shaft (7) cooperates with the driver (21) in the circumferential direction in a rotationally fixed manner or in a coupled manner for the purpose of entrainment in order to rotate the driver (21). The fitting system further comprises at least one quick fastener (50) which sits on the shaft (7) in an axially non-displaceable manner in order to secure the cooperation of the shaft (7) and driver (21) axially in at least one direction. The quick fastener (50) is connected to the driver (21) and/or the securing element (43) thereof.