Test Principle
Impedance test for downward pressure: For the toy scooter handle, the vertical load of the loading jig was applied and held for 5 min and then unloaded to evaluate the strength performance of the standpipe.
Impedance test for upward lift force: The strength performance of the standpipe is evaluated by applying a vertical pull force to the toy scooter handle through a rope clamp and holding it for 5 minutes.