Safety device for sliding doors
AssigneePoma 2000 S.A.
InventorGeorges Obrecht
Life of this patent
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Abstract
A safety device for a vehicle sliding door which detects any obstacle hindering the door closing movement and which cannot injure a passenger struck by the door. The door closing force is limited to a non dangerous value and the door comprises a tongue groove joint surrounded by a flexible lip joint. An obstacle is first struck by the flexible lips and only after retraction of these lips by the tongue. The presence of this obstacle hinders the penetration of the tongue into the groove and the closing of the door.
Claims6
In a sliding door mechanism having two sides which are closed together in an abutting relationship in response to the force from a motor, said motor having a force limiting means for preventing injury to a passenger caught between said sides, and having a door position detector for determining the presence or absence of a fully closed door, a safety device for controlling the closing movement of said door comprising:
- a tongue groove joint between said sides, said joint comprising a tongue connected to one of said sides, and a groove connected to the remaining of said sides, said tongue and groove forming said joint during closure of said door;
- a retractable sheath secured to said one side and movable with respect to said one side into a first protruded position wherein it surrounds said tongue, and into a second retracted position wherein it exposes said tongue to permit said tongue to enter said groove, said sheath being movable between said first and second positions by a force smaller than said closing force.
Dependencies are inferred from the claim text.