A single hinge joint should be applied to a gameobject the fundamental object in unity scenes which can represent characters props scenery cameras waypoints and more.
Unity door hinge joint.
Hinge joint は 2 つの リジッドボディ をグループ化し 互いにヒンジで連結されているかのように制約します ドアに最適ですが 鎖や振り子などをモデル化するのにも使用できます.
The hinge joint groups together two rigidbodies constraining them to move like they are connected by a hinge.
2d joints have 2d at the end of the name for example hinge joint 2d.
A gameobject s functionality is defined by the components attached to it.
Unity provides the following joints that apply different forces and limits to rigidbody components and therefore give those bodies different motion.
This is a quick tutorial that shows one way to use hinge joints and letting them move around.
For a summary of the 2d joints see joints 2d documentation.