Slow down folded hatch that is quite heavy

[Thomas_Blekinge]

Place your fingers at the very top and press with 1 kg, you say OUCH OUCH, then move your fingers to the middle and press with 1 kg, you probably don't say OUCH OUCH but lose your fingers, due to the leverage effect

An irrelevant comparison. No one denies that leverage effect exists but not in this application. Take a plate and attach two loops at half the short side. Lift up, and the force is equal to the plate's weight, nothing else.

 

[tommib]

Okay, I was apparently a bit unclear. Yes, there is a leverage effect, it just doesn't allow the hatch to weigh more than 12 kg. Less, yes. More, no.

 

[Liteavvarje]

The problem you have with julas is if the bolt is shorter than the hatch and the cabinet material is thicker, then it won't be sufficient if you were to drill a hole.

 

[tommib]

The idea with the line and block at the top is not dumb. You just need to adapt it a bit. For example, by spring-loading the line.

Or just stronger gas dampers.

 

[janerik12]

The problem you have with julas is if the bolt is shorter than the door and the cupboard material is thicker, then it won't reach through if you were to drill a hole

Wouldn't it work if you attach the bolts with something like this bracket?

 

[HasseTeknik]

Spring straight up gives 6 kg each if placed in the middle of the short side (the line between the side mounts goes through the center of mass). 45-degree angle on the springs relative to the board in the extended position should then give 1.4 *12/2 i.e. approximately 8.4 kg each ------ or?

 

[Liteavvarje]

Spring straight up gives 6 kg each if placed right at the short side (the line between the side mounts goes through the mass center). A 45-degree tilt on the springs in the unfolded position should then give 1.4 * 12/2, i.e., about 8.4 kg each ------ or?

You probably have a better grasp of the calculation than I do, what you say might be correct

 

[Thomas_Blekinge]

Look here: http://www.moebelbeschlaege-shop.de/epages/MBS.sf/de_DE/?ObjectPath=/Shops/MBS/Products/36530611

 

[janerik12]

Spring straight up provides 6 kg each if placed in the middle of the short side (the line between the side mounts goes through the center of mass). A 45-degree angle on the springs relative to the board in the unfolded position, should then give 1.4 *12/2 i.e. about 8.4 kg each ------ or?

Do you mean that the gas springs I have (12kg each) should work if mounted differently?

 

[Thomas_Blekinge]

How did you mount them?

 

[Liteavvarje]

Wouldn't it work if you attach the bolts to a mount like this?
[image]

That seems good, but before you screw or drill, check what happens with the dampers. It might be a bit tricky to keep them hanging, place them as high up on the hatch as possible in terms of length, so you see that they can handle it. How you manage that is hard to predict; if it doesn't work, you can return them.

 

[Snål-Jocke]

Problems are always fun to solve. You definitely become curious about what it's about, whether the solution has to be aesthetically pleasing or if a more industrial look can be accepted.

My suggestion is whether it's possible to either replace the hatch with something made of lighter material or modify it so that it opens sideways instead. Is that possible?

 

[janerik12]

Problems are always fun to solve. You undeniably become curious about what it's about, if the solution must be aesthetically pleasing or if a more industrial appearance can be accepted?

My suggestion is if it is possible to either replace the hatch with something lighter or modify it so that it is instead side-hinged. Is that possible?

Unfortunately, modification of the hatch is not possible.

 

[janerik12]

How have you mounted them?

I mounted according to the instructions (red).

 

[fredrik.johansson]

I would interpret the second to last table to mean that with a 500mm hatch, you can let the hatch weigh 2.1 kg if you have the 12kg version of the gas spring. So, one-fifth of your hatch weight.