Hinged Vehicle Storage Lid Locking for Impact Opening Prevention
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Solution Overview
Problem
Existing storage devices in motor vehicles suffer from unintentional opening during collisions due to acceleration forces, and existing safety mechanisms generate unwanted noises during normal vehicle operation.
Innovation Solution
A storage device with a double push mechanism and a safety mechanism featuring a pendulum with elastic return means, where the pendulum is centered and equipped with a locking hook to prevent unintentional opening during collisions, and secondary elastic return means to minimize noise during normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety mechanism with a pendulum and stop is used to prevent unintentional opening during collisions, then reliability is improved, but parasitic noises are generated during normal vehicle operation
Solution Approach 1:
The patent applies preliminary anti-action by introducing a centered pendulum with secondary elastic return means that actively counteracts the micro-displacements causing noise before they occur. The pendulum's centered position and elastic return mechanism create a pre-positioned counterforce that prevents the parasitic movements between the stop and pendulum during normal vehicle rolling phases, while maintaining the safety function during collisions.
2Reliability
If a pendulum with stop is used to block lid opening during acceleration, then safety is improved, but micro-displacements occur during vehicle rolling phases
Solution Approach 1:
The patent applies asymmetry by centering the pendulum with respect to the median vertical longitudinal plane of the housing. This centered asymmetric positioning allows the pendulum to symmetrically absorb and counteract micro-displacements during normal rolling phases, while maintaining the asymmetric locking function during collision acceleration events. The secondary elastic return means further stabilizes the centered position.
Solution Approach 2:
The centered pendulum with secondary elastic return means serves itself by automatically counteracting its own micro-displacements during normal operation. The elastic return means provides self-correcting force that keeps the pendulum stable in its centered position without external intervention, eliminating the need for additional noise-reduction mechanisms.
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
Prevents unintentional opening during collisions while reducing parasitic noises during normal vehicle operation by using a centered pendulum with a locking hook and secondary elastic return means.
Implementation Method 1
a pendulum mounted pivoting around a second transverse axis on said housing and being equipped with a weight capable of driving by inertia the displacement of said pendulum when said housing undergoes acceleration in a longitudinal direction
Implementation Method 2
a safety mechanism comprising a pendulum mounted pivoting around a second transverse axis on said housing and being equipped with a weight capable of driving by inertia the displacement of said pendulum when said housing undergoes acceleration in a longitudinal direction, said pendulum comprising a locking element designed to cooperate against an element of said cover when said housing is subjected to said longitudinal acceleration so as to prevent the unintentional opening of said cover. Said safety mechanism also includes secondary elastic return means that bring said pendulum to a rest position
Data Source
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AI summary
The invention relates to a vehicle storage device comprising a lid (20) mounted so as to pivot about a first transverse axis on a housing (10) between open and closed positions, wherein first resilient means return the lid to the open position, a push-push mechanism capable of locking the lid in the closed position, as well as a safety mechanism comprising a pendulum (36) mounted so as to pivot about a second transverse axis (C) on the housing and comprising a locking member (38) provided to co-operate in abutment with an element (39) of the lid when the housing is subjected to an acceleration in a longitudinal direction so as to prevent the unintentional opening of the lid, the safety mechanism also comprising second resilient means (40) that return the pendulum to a rest position in which it bears against a first abutment (42) provided on the housing.