Vehicle Headrest Mounting with Integrated Locking Sleeve
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly of headrests on vehicle seat backrests is often cumbersome due to existing mechanisms that require complex locking and adjustment processes, making it difficult for manufacturers and suppliers to streamline the assembly process.
Innovation Solution
A headrest system featuring a bearing sleeve with a movable locking element that transitions from an assembly position to a locking position, allowing for easy mounting and secure attachment to the backrest structure, with optional height adjustment mechanisms enabling relative movement between the headrest part and support rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex locking mechanism with multiple components is used to secure the headrest to the backrest, then the reliability of the connection is improved, but the device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines the locking element and the bearing sleeve into a single integrated component. The locking element is formed as one piece with the bearing sleeve, eliminating the need for separate locking mechanisms and reducing the number of parts that need to be assembled while maintaining secure connection reliability.
Solution Approach 2:
The locking element automatically transitions from an assembly position to a locking position through relative movement between the support rod and bearing sleeve. This self-actuating mechanism eliminates the need for manual intervention or complex control systems to engage the locking mechanism, simplifying the assembly process while ensuring reliable connection.
2Reliability
If a secure locking mechanism is implemented to prevent unintended disassembly, then the reliability of the connection is improved, but the ease of operation during assembly deteriorates
Solution Approach 1:
The locking element is designed to be movable between two distinct positions: an assembly position where it does not protrude beyond the bearing sleeve outer surface, and a locking position where it engages with the backrest structure. This dynamic design allows the mechanism to be easy to install initially, then securely lock once positioned, resolving the contradiction between ease of operation and connection security.
3Ease of repair
If multiple separate components are used for the headrest assembly, then the ease of repair and replacement is improved, but the assembly time and manufacturing complexity increase
Solution Approach 1:
The headrest assembly is segmented into distinct functional components: the headrest part, support rods, bearing sleeves with integrated locking elements, and the backrest structure. This segmentation allows individual components to be manufactured separately, assembled efficiently, and replaced independently if needed, balancing ease of repair with reduced assembly time.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Headrest (10) with a head support part (11) on which at least one support rod (12) for mounting on the backrest (13) of a vehicle seat (14) is held immovably or relatively movable to the head support part (11), with a bearing sleeve (15) in which the support rod (12) is mounted, wherein the bearing sleeve (15) has a locking element (18) for locking it to a structure (27) of the vehicle seat (14), which is movable between a locking position in which the locking element (18) projects beyond an outer surface of the bearing sleeve (15) and a mounting position in which it projects less beyond an outer surface of the bearing sleeve (15) with respect to the locking position.