Vehicle Seat Loading Flap Locking Against Impact Opening
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Solution Overview
Problem
Existing loading flaps in vehicles may not provide sufficient safety against inadvertent opening during accidents, particularly when subjected to impacts from loaded goods.
Innovation Solution
A pivotally mounted loading flap with a positive and/or non-positive connecting means, such as a bolt, that moves translatorily and rotatively during locking and unlocking, is designed to prevent accidental opening, using a combination of translatory and rotative movements to secure the flap to the backrest, and additional securing means to enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple locking mechanism is used for the loading flap, then the device complexity is reduced and manufacturing cost is lowered, but the safety against inadvertent opening during accidents is insufficient
Solution Approach 1:
The locking mechanism employs dynamic elements including a bolt that performs both translatory and rotative movements during locking and unlocking operations. The bolt is rotatably mounted on the housing about a pivot pin, allowing it to rotate while the housing itself translates parallel to the loading flap. This combination of translatory and rotative movements creates a more reliable locking action that resists accidental opening during accidents.
Solution Approach 2:
The invention merges multiple movement types (translatory and rotative) into a single locking mechanism. The bolt combines both translatory movement (along with the housing) and rotative movement (about the pivot pin), creating a compound motion locking system that enhances safety without requiring multiple separate locking devices.
2Reliability
If a complex locking mechanism with multiple movements is used, then safety against inadvertent opening is improved, but the ease of manufacture and production cost are worsened
Solution Approach 1:
The dynamic bolt mechanism with combined translatory and rotative movements is achieved through a straightforward mechanical design. The bolt is simply rotatably mounted on the housing about a pivot pin, allowing natural rotation during the locking process without requiring complex guide mechanisms or multiple actuators.
Solution Approach 2:
The locking mechanism operates largely automatically through the superimposed movements of the housing and bolt. The translatory movement of the housing parallel to the loading flap, combined with the rotative movement of the bolt about the pivot pin, creates a self-contained locking action that reduces the need for additional control systems or complex actuation mechanisms.
3Reliability
If additional securing means are added to prevent inadvertent opening, then safety is improved, but the device complexity increases
Solution Approach 1:
The invention combines the translatory movement of the housing and the rotative movement of the bolt into a single integrated locking action. This merging of movement types within one mechanism provides enhanced security without requiring separate locking devices or additional securing means.
Solution Approach 2:
The dynamic combination of translatory and rotative movements in the single bolt mechanism creates a more reliable locking action that resists accidental opening forces from multiple directions, reducing the need for additional static securing elements.
Data Source
AI summary
A loading flap is pivotally mounted on the backrest of a vehicle seat and can be locked with the backrest. The locking operation can be carried out using positive and/or non-positive means, e.g. a bolt that moves in a translatory and rotative manner during locking and unlocking. The loading flap includes a housing that may be moved in a translatory manner parallel thereto during opening.