Cable-Driven Headrest Height Adjustment Mechanism
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Solution Overview
Problem
Existing vehicle seat headrests are not easily adjustable in height and often have visible metal rods that can pose a risk of injury to occupants.
Innovation Solution
A height-adjustable headrest mechanism using a mounting carriage with actuating cables and a guide element, where the headrest cushion is fixed to a mounting plate on a carrier element, allowing for easy height and inclination adjustment without visible metal rods, and optionally driven by an electric motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional rod-shaped retaining elements are used to support the headrest, then the headrest can be mounted on the vehicle seat, but the metal rods become visible and pose a risk of injury to occupants
Solution Approach 1:
The patent removes the visible rod-shaped retaining elements from the headrest structure and replaces them with a cable-based tensioning system. The cables are routed through the headrest cushion and attached to the vehicle seat frame, extracting the structural support function from visible metal rods to hidden cable tensioning mechanisms, thereby eliminating the injury risk while maintaining structural integrity
Solution Approach 2:
The patent uses flexible cables instead of rigid metal rods to provide structural support. The cables can be routed through fabric covers and integrated into the headrest cushion design, creating a flexible support system that is both safe for occupants and aesthetically pleasing while maintaining the necessary mechanical support function
2Adaptability or versatility
If the headrest height is made adjustable, then comfort and adaptability are improved, but the adjustment mechanism becomes complex and difficult to operate
Solution Approach 1:
The patent implements a dynamic height adjustment system where the headrest position can be easily changed by the user. The cable tensioning mechanism allows for smooth height adjustment through simple pulling or releasing of the cables, enabling the headrest to adapt to different user preferences and positions without complex controls
Solution Approach 2:
The headrest adjustment mechanism is designed to be self-operating through cable tensioning. The user can adjust the height by simply pulling the cables to tighten or releasing to loosen, with the system self-regulating the position through the tension balance, eliminating the need for motors, switches, or complex control mechanisms
Data Source
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AI summary
The invention relates to a height-adjustable arrangement of a head restraint (2) on a vehicle seat. According to the invention, the head restraint (2) or at least one cushion (3) of the head restraint (2) is fastened by means of a receiving plate (8) fixed on a framework to a receiving slide (14) of a height-adjustment mechanism (7), wherein the receiving slide (14) is arranged in a height-displaceable manner on at least one guide element (15) of the height-adjustment mechanism (7) by means of at least two actuating pulls (17.1, 17.2) acting in an opposed manner on the receiving slide (14), the guide element being arranged in or on a holding element (1) of the head restraint (2). Furthermore, the invention relates to a vehicle seat with a height-adjustable head restraint.