Buffering device

摘要

A buffering device includes a cylindrical casing and a piston module movably mounted in the cylindrical casing. The cylindrical casing includes a base plate and a shielding piece pivotally attached to the base plate. An air inlet and an air outlet are defined in the base plate. A diameter of the air inlet is greater than that of the air outlet. When the piston module is moving towards the base plate, the shielding piece is rotated to a closed position to shield the air inlet by air pressure above the shielding piece. When the piston module is moving away from the base plate, the shielding piece is rotated to an open position to expose the air inlet by environmental air pressure.

主权项

1. A buffering device, comprising:
a cylindrical casing comprising a base plate; a shielding piece pivotally attached to the base plate; and a piston module movably mounted in the cylindrical casing and capable of moving towards or moving away from the base plate; wherein the shielding piece comprises a main piece, a pivot mounting flange extends from the main piece, and a pivot hole is surrounded pivot mounting flange; a pivot post extends through the pivot hole for pivotably mounting the shielding piece on the base plate; an air inlet and an air outlet are defined in the base plate; a diameter of the air inlet being greater than that of the air outlet; when the piston module is moving towards the base plate, pressure inside the cylindrical casing causes the shielding piece to rotate to a closed position, thereby blocking the air inlet; and when the piston module is moving away from the base plate, environmental pressure causes the shielding piece to rotate to an open position, thereby opening the air inlet.