Vehicle Wheel Trim Assembly Locking Mechanism
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Solution Overview
Problem
Vehicle trim components, especially those attached to wheels, tend to detach due to inadequate retention mechanisms, affecting aesthetic appeal and vehicle performance, and existing solutions either fail to securely attach or complicate removal for maintenance.
Innovation Solution
A vehicle trim assembly featuring resilient catches and a locking member that can be locked in place to prevent detachment, with a second locking member to maintain the locked position, ensuring secure attachment and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the force necessary to remove a trim component is increased to prevent detachment, then the retention reliability is improved, but the difficulty in removing the component for maintenance increases
Solution Approach 1:
The locking member transitions between locked and unlocked states dynamically, changing the retention force from high (when locked) to low (when unlocked). This allows the system to provide strong retention during vehicle operation while enabling easy removal when needed for maintenance.
Solution Approach 2:
The system changes the retention parameter (force required to remove) based on the state of the locking member. When locked, the retention force is high; when unlocked, the retention force is low. This parameter change resolves the contradiction between reliable retention and ease of removal.
2Ease of manufacture
If resilient catches are used to attach trim components to wheels, then the ease of installation is improved, but the retention reliability under external forces deteriorates
Solution Approach 1:
The attachment system is divided into two functional segments: resilient catches for easy installation and a locking member for secure retention. The resilient catches enable simple snap-fit installation, while the locking member provides reliable retention under external forces such as turning maneuvers and high-speed travel.
Solution Approach 2:
The invention combines two different retention mechanisms (resilient catches and locking member) into a single integrated system. The resilient catches provide initial attachment and ease of installation, while the locking member enhances retention reliability under external forces, achieving both ease of installation and reliable retention.
3Reliability
If multiple locking mechanisms are added to prevent detachment, then the retention reliability is improved, but the device complexity increases
Solution Approach 1:
The locking member serves multiple functions: it locks the resilient catches in place, prevents detachment under external forces, and can be easily unlocked for removal. This multi-functionality improves retention reliability without proportionally increasing device complexity.
Solution Approach 2:
The locking member is designed to be operable by the user without special tools or complex procedures. The simple locking and unlocking mechanism allows users to secure and remove trim components themselves, reducing the need for additional service equipment or procedures.
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 assembly effectively prevents accidental dislodgment of trim components during vehicle operation and reduces the force required for mounting and removal, providing tactile feedback for secure engagement and easy operation under adverse conditions.
Implementation Method 1
the trim component having at least one resilient catch
Data Source
Figure 1
Figure 2~3
Figure 4~5b
AI summary
A vehicle trim assembly for mounting directly or indirectly to a vehicle wheel (10) has a centre cap (12), a locking member (13), and a cap badge (36). The locking member is mounted on the centre cap component, whereby a number of projecting portions (28) provided on the locking member (13) engage with a corresponding number of resilient catches (20) provided on the centre cap (12). The locking member is rotatable between a lock and an unlock position. In the lock position, separation of the centre cap component (12) from the vehicle wheel (10) is prevented by the locking member (13). A number of features (39, 40, 41) are provided on the rear face of the cap badge (36). When the cap badge is fitted to the assembly, these features engage with corresponding cooperating features (19, 24) provided on the centre cap (12) and the locking member (13), thereby preventing the locking member from moving relative to the centre cap (12). An interference locking arrangement, provided on a radially outside surface of the projecting portions (28) of the locking member and the resilient catches (20) of the centre cap component, prevents the locking member from accidentally rotating from a lock to an unlock position.