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How hard is to build "Soft closing car door" Answered


After many hours searching on internet, I didn't found any topic about "How to make soft closing car door", is it hard to set this ? I found many car accessories like "SlamStop" but why not learn how it works and how to build it. Any ideas how to start is such a good start for me, another important things is how secure is this when something block closing door.

So ... There is any ideas how to start build this on my car.

Thank you and have a nice day.

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Jack A Lopez
Jack A Lopez

Best Answer 1 year ago

I found a copy of the installation manual, and I will attach that PDF to this post.

Reading this manual might give you some insight into how this works.

As far as I can guess, the way this thing works is: A metal stud (called "support cantilever") is attached to the door frame. An actuator (called "actuator") capable of gripping that metal stud and pulling on it, is attached to the car door. Another part of this system is a position sensor, consisting of a magnetic sensor (guessing a Hall effect sensor) installed on the door, and a magnet installed nearby on the door frame. Also the existing door latch is left unchanged.

The way it works is: Somehow, closing the door most of the way, line up the stud and the gripper actuator with one another. Then the actuator can start pulling the door closed. It keeps pulling until a signal from the position sensor says this distance is small enough that the door must be closed, and hopefully latched. Then the gripper actuator releases its Kung-Fu grip ;- ), and in doing so, somehow, enables the door to be opened.

I mean, if everything happened correctly, the door is latched, and the gripper actuator has moved out of the way, released its grip somehow, so that it will not interfere with the usual actions involved in opening the door.


1 year ago

Unless you are in a country that has no road autorities I would not even try it.
"Tampering" with the closing mechanism of the door is a bad idea.
These things are designed for safety and nothing you can make will be certified and tested to meet manufacturers requirements.
In case you do not have to worry about safety and don't mind getting into trouble:
You need an actuator that pulls the locking mechanism in once the door pushes against it.
Like a motorised locking ring with an opening.
Problem is to make it fit in the available space.
Usually these fancy doors also have a totally different system for the hinged part.
Try your door and you will notice you need a lot of force if you try to push it from just touching to actually closed.
On these soft doors there is no additional force required to close this last gap, except what you need to compress the door seals - which are usually much softer and of different design for this as well ;)