how to restrict motion

In this link https://www.indiamart.com/proddetail/portable-x-ray-machine-20187560697.html
and also in the attached file
you'll see an Xray machine connecting rod,
what I want to do is to make a connection between that long rod that can move 120degrees and that rod's endpoints that are attached to it and restrict its motion.
How can this be done in Autodesk Inventor?
Any help would be appreciated. If I was not clear regarding my doubt then please let me know.
Thank You
Accepted answer

I think what you need is a regular angle constrain but add Minimum and Maximum limits to enable the range of motion that you are after.
Mukesh Agarwal 10 Feb, 2022 01:05 PM Thank you so much sir , this will really help me
Bob Wiley 10 Feb, 2022 02:06 PM You're welcome! Thanks for the feedback.
Here is a start. FLEX ARM TAPPING MACHINE