The application of rotary damper can be generally divided into two catagories:
Soft-close & soft-open.
Soft-opening lid is wildly used in products, like electric kettle, coffee machine, EV charger, Automotive interior and ect.
How to make the soft open?
The combination of the spring and damper allows for a “soft-open” effect.
The lid starts to open quickly due to the spring’s force but then slows down as it approaches the open position due to the increasing resistance from the damper.
How to make the soft open?
There is various kind of damper.
Regarding “soft open with spring”, we prefer to recommend two-way damper (barrel damper/gear damper) than one-way damper(vane damper).
- Due to the one-direction damper (example: vane damper) interior structure, at the beginning of rotation, its damping is very low. Vane damper’s working angle is 110°，its damping from the final 80°
- In the soft-open application, at the initial of soft-open the force of spring is very big, at the same time, vane damper almost no damping at the very beginning angle. So there will be a longer free-damping travel than that with two-way rotary damper.
