Push-Push Actuation Device for Flap Arresting
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Solution Overview
Problem
Existing actuation devices for filler-neck flaps in automobiles require high spring forces to prevent unintentional opening, which reduces convenience and generates noise, and are complex to integrate with central locking systems.
Innovation Solution
An actuation device with two separate parts that engage and disengage to arrest the flap in a predetermined position, allowing for lower spring forces and easier integration with central locking systems, using a push-push kinematic that includes a tappet and control ring for robust operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high spring force is used to preload the filler-neck flap into the closed position, then the flap can be reliably prevented from unintentional opening, but the operating convenience is reduced and undesired noise is generated
Solution Approach 1:
The actuation device is divided into two separate actuation parts: a first actuation part fastened on the flap and a second actuation part fastened on the component. These parts engage with each other through a push-push kinematic mechanism with a tappet and control ring, creating a positive locking engagement that replaces the need for high spring forces to maintain the closed position.
2Reliability
If a high spring force is used to preload the filler-neck flap into the closed position, then the flap can be reliably prevented from unintentional opening, but undesired noise generation occurs during actuation
Solution Approach 1:
The actuation device is divided into two separate actuation parts: a first actuation part fastened on the flap and a second actuation part fastened on the component. These parts engage with each other through a push-push kinematic mechanism with a tappet and control ring, creating a positive locking engagement that replaces the need for high spring forces to maintain the closed position.
3Reliability
If a high spring force is used to preload the filler-neck flap into the closed position, then the flap can be reliably prevented from unintentional opening, but the device complexity increases for integration with central locking systems
Solution Approach 1:
The actuation device is designed with a standardized interface and simple two-part structure that can be universally integrated with central locking systems. The first actuation part on the flap and second actuation part on the component create a modular design that simplifies integration while maintaining reliable prevention of unintentional opening.
Data Source
AI summary
An actuation device for a flap mounted pivotably on a compartment, with a push-push kinematic, includes a first actuation part to be fastened on the flap and a second actuation part to be fastened on the component. The first actuation part engages with the second actuation part when the flap is moved from its opened position into its closed position, so that after a first stroke of the first actuation part in the direction of the second actuation part and a subsequent backstroke of the first actuation part, the actuation parts are held on each other in an arresting position. The arresting position is released by a second stroke of the first actuation part in the direction of the second actuation part so that the flap can be moved into its opened position, wherein the first actuation part and the second actuation part are disengaged.