Modular Roof Bar Locking Mechanism for Theft-Resistant Reconfiguration
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Solution Overview
Problem
Existing vehicle roof bars are easily accessible and can be stolen since they require dismantling and reconfiguration, which makes them vulnerable to theft as they can be removed and reattached without damaging the vehicle.
Innovation Solution
A tamper-proof roof bar system with a secure fixing mechanism that can only be controlled by the vehicle's driver, utilizing an energy source, a rigid transmission rod, and a control element accessible only inside the vehicle, allowing the roof bars to be moved between configurations without tools or complex manipulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If roof bars are made removable for reconfiguration, then adaptability is improved, but security deteriorates
Solution Approach 1:
The fixing mechanism is divided into separate components: a fixing pin, a transmission rod with two walls, and an energy source. The pin can be manually removed from support parts to reconfigure roof bars, while the transmission rod and energy source remain integrated in the support part. This segmentation enables both user-friendly reconfiguration and secure anchoring when locked.
Solution Approach 2:
The transmission rod acts as an intermediary between the energy source (electric motor) and the fixing pin. When the motor activates, it moves the transmission rod, which in turn releases the pin from the gripping position. This intermediary mechanism translates rotational motor motion into linear pin displacement, enabling automated unlocking while maintaining structural integrity.
2Reliability
If a secure fixing mechanism is implemented, then security is improved, but device complexity increases
Solution Approach 1:
The fixing pin is extracted as a separate, manually removable component from the support part assembly. This allows the pin to be easily removed by users for reconfiguration while the main support part structure with its integrated transmission rod and motor remains secure in the vehicle. The extraction principle simplifies the user interface while maintaining security through the integrated mechanism.
Solution Approach 2:
The manual locking mechanism is replaced with an electric motor-driven transmission system. Instead of requiring manual manipulation of complex mechanical locks, a simple electric motor activates a transmission rod that automatically releases the fixing pin. This substitution reduces operational complexity for users while maintaining robust security through the automated locking mechanism.
3Reliability
If control element is placed inside vehicle, then security is improved, but ease of operation deteriorates
Solution Approach 1:
The electric motor serves multiple functions: it acts as the energy source for moving the transmission rod, provides the locking force through the rod's position, and enables automated operation when activated by the control element. This multi-functionality reduces the need for separate mechanical components, simplifying the overall system while maintaining both security and ease of use.
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 ensures the roof bars can be easily reconfigured and secured without external access, providing tamper-proof protection by limiting access to the control mechanism, thus preventing theft.
Implementation Method 1
an energy source which can be activated by said control element... The energy source can either directly cause the movement of the transmission rod
Data Source
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AI summary
The invention relates to a vehicle comprising a roof and two roof bars, each fixed to said roof by means of at least one support piece, said two bars being removable to allow moving from a first position to a second position on the roof (2). According to the invention, each roof bar comprises a fastening mechanism (100) including a control element, an energy source (101) that can be activated by said control element, a rigid transmission rod (103) having two facing walls, and a fastening pin (104), the transmission rod (103) being able to move, by means of activation of the energy source (101) by the control element, from a locking position of the fastening pin (105) in which the two facing walls clamp said fastening pin (105) to an unlocking position thereof.