Cabinet with doors lifted by a gas spring

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    Gas Spring
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Discussion Overview

The discussion revolves around the calculation and application of gas springs for cabinet doors that lift upward rather than using traditional hinges. Participants explore mechanisms, software for calculations, and the theoretical underpinnings of the system.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks guidance on calculating gas springs for upward-lifting cabinet doors and requests recommendations for software to assist with these calculations.
  • Another participant requests a clearer visual representation of the mechanism to better understand the support structure during operation.
  • A later reply identifies the mechanism as a four bar linkage with a gas cylinder, suggesting that analysis from textbooks on Theory of Machines can be used to determine the necessary force for equilibrium at various positions.

Areas of Agreement / Disagreement

Participants have not reached a consensus, and multiple viewpoints regarding the mechanism and calculation methods remain present.

Contextual Notes

There are limitations in the clarity of the mechanism's design due to the initial lack of visual aids, and the discussion does not resolve the specifics of the gas spring calculations or software availability.

sliwinskit
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Hello everybody.

I'm trying to figure out how to calculate gas springs for specific doors not with hinge, but lifted up, like on the picture.
Do anybody experience with such type of mechanism?

Also I'm looking for helpful software, for gas spring calculation (different types). I found screens from JGC software, but I don't know how to download or buy it.
 

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The photo you show does not make the mechanism clear. Try posting a sketch that shows how the doors are supported at about the half open position.
 
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OK, here is draft of mechanism. Cabinet closed, during opening and fully open.
bus.jpg
 
The linkage is just a four bar linkage, with the gas cylinder added to provide motive power. The analysis of the four bar linkage is given in many textbooks on Theory of Machines. With that sort of analysis in hand, you can calculate the force required for equilibrium at any position; that is the force that you would ideally want the gas spring to provide. That should get you started.
 

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