90 deg. hinge of 4-bar linkage 1 

You're welcome.

Seriously? This is clearly a Finger Pincher 6000, its even got the "only closes the door in one of its two positions" package

I like this design for the upper cabinets I have in my camping van. The cabinet is only 5 inches tall, and I don't like having a lip to keep stuff in... since stuff keeps falling down. I just gotta draw this pattern and cut my own with plasma!

It's a door. Or it should be, i think? It's really weirdly anchored on those planks... Definitely would be a horrible table

You can already buy these types of hinges from Blum and other companies. And some of them include soft close and other handy features.

Gotta admit I’ve never seen one of these on a table. Only cabinets like the first commenter described.

@@fearofchicke I don't know where the table conversation came in. I was also thinking of cabinets

No problem

Yes. Thank you for your idea.

а мне непонятно, за счет чего он будет держать усилие на закрытие...

@@averlina1498 только за счёт пружины , однако )

И упадёт с нагрузкой🤔, не понимаю зачем мне это без фиксатора...

you got this in your recommended too?

@@darkreddust2135 careful, don't anger the hamter!

I guess it all starts by analyzing the moving part (green). You already know the starting and ending position and orientation of it, and you know it should have 2 links to describe that movement. Then you need to trace a circle that touches a given anchor point at its initial and ending positions.... and there you have the first link origin and length (circle's origin's point and radius). then do the same with the other anchor point, and you have the other link origin and length. Then you repeat the same thing over and over with different origins and lengths, and you end up "getting it" how anchor point's position and link length affects the motion... I guess it's not intuitive until you test it.. .maybe there's a more mathematical way to design it, but I usually do the trial-error way

@@radiowallofsound Thank you for the reply!

To meet the desired closed and open positions of the movable plate, “try and adjust” is the method used here. With a CAD software that can support kinetic simulation the process is less laborious. It means that we have to alter dimensions of the bars, run the simulation and check the movable positions for each case until getting desired result.

Become a mechanical engineer and take few extra courses on kinematics... Also dont be a dumbass, they can't do much about that in school.

Tryout Linkage

To the pink bar not to the blue bar.

It'a difficult to consider movments with less than 4 parts If there were three, each link wouldnt be able to move in a triangle position(the foundation behind truss structures) And 2 is just a pivot lol

Yes.

At least it must be strong enough to bear the desk weight.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

@@thang010146 thank you

But it might not stay

Please show me its pictures or sketches. I don't know what it is. My email: thang010146@gmail.com

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

The spring is created in Dynamic Simulation, so there is no need to create the spring body.

Underrated comment. Lmao

Please show me its pictures or sketches. I don't know what it is. My email: thang010146@gmail.com

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation. Tất cả các video trong kênh này được thực hiện bằng "Autodesk Inventor, Dynamic Simulation."

Sorry, I don't know. I just animated it.

To close it use a strong enough force applied to the green part (larger than the spring force).

The spring holds the movable plate at stretching position. Alternate the spring pivot position to get larger holding force.

@@thang010146 I worded that poorly.. what's the spring's force multiplier given the arrangement shown in the video? thx!

No motor here. The green part is driven by the user.

Yes. You are right.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

No problem if the weight is fixed firmly to the yellow desk.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

There are 10 animated pantographs in my book 2700 ANIMATED MECHANICAL MECHANISMS www.mediafire.com/file/6db2ju5ck75ce6x/2700AMMePDF.zip pages 90 - 93, Part 3

Wow, great files from you, i love it ! But i speak about train pantograph, like that : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-E0sYG_Q1hB0.html :)

No.

The link for the STEP files is already in the video description. Please read it before asking.

Positioning: In folded position: the pink bar contacts the pin on the purple bracket. In the extended position: the yellow plate is in contact with the upper plate of the table.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

@@thang010146 does SOLIDWORKS have a similar tool, i have been trying find one, if you know of a simple one for making/studying mechanisms quickly?

I can not help you. I only know Autodesk Inventor.

The dimensions can be got from CAD files of this video. Links to download the CAD files are in the video description.

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

@@thang010146 thank you very much sir 😊

All videos in this channel are made in Autodesk Inventor, Dynamic Simulation.

@@thang010146 thanks you sir...

I don't understand what you want.

Yes. It can bear only a small weight.

@@thang010146 es un buen mecanismo para puertas de muebles de cocina 👍🏼👌🏼😃😜

Tôi sẽ tìm hiểu và làm video nếu được.

@@thang010146 dạ vâng, bác ơi bác check email cháu với a !!

Không thấy email. thang010146@gmail.com

@@thang010146 cháu gửi lại rồi đó bác ạ Có thể email cũng bị rơi vào hòm thư rác ạ

Đúng vậy.

Extension of a table.