Rotary hinge assembly

A vehicle door rotary hinge assembly comprising:

• a fluid chamber with fluid and comprising a constriction section with a throat area;
• a throat tuner comprising a strip structure in the throat area to control fluid flow through the constriction section by sliding the strip structure to one of various positions;
• a rotary connecting pin mounted within the chamber;
• and
• a vane connected to the pin and rotatable to displace the fluid towards the constricted section when the pin rotates responsive to rotation of a door.

A vehicle having a rotary hinge assembly, comprising:

• a vehicle door;
• a fixed adapter connected to a body part of the vehicle;
• a fluid chamber connected with the fixed adapter and filled with a fluid and comprising a constricted section with a throat area;
• a throat tuner comprising a strip structure connected in a region of the throat area of the constricted section, wherein the throat area is being tunable by sliding the strip structure of the throat tuner to one of various positions to control the fluid flow passing through the constriction section;
• a rotary connecting pin mounted within the fluid chamber, wherein the rotary connecting pin comprises:
• a first longitudinal end connected to the vehicle door to provide the rotational movement to the rotary connecting pin in response to opening and closing of the vehicle door;
• and
• a second longitudinal end concentrically and rotatably mounted in the fluid chamber;
• and
• a vane connected to the second longitudinal end of the rotary connecting pin, wherein the vane rotates to displace the fluid present in the fluid chamber towards the constricted section when the rotary connecting pin undergoes the rotational movement in response to opening and closing of the vehicle door.