Patent ID: 9259064
Filing Date: 2016-02-16
CPC Classification: A45B

Claim Text:
1. An opening/closing structure for an automatic umbrella comprising: a shaft assembly, a frame, a notch, a first runner, a driving mechanism, and a handle in which a power source is configured; with the shaft assembly including a first tube and a second tube, with a length of the second tube being larger than that of the first tube, with a lower end of the second tube fixed on the handle, with an upper end of the second tube matching with the notch, with the first tube fitted on the second tube to move between the notch and the handle on the second tube, and with the first runner being fitted on the first tube; with the frame coupling with the notch and the first runner; and with the driving mechanism including a screw rod and a push post for cooperating with the screw rod; wherein: a lower end of the screw rod is joined with the power source in the handle; the push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod; the power source drives the screw rod to rotate clockwise or counterclockwise; the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod; the push post is inserted into the second tube and an upper end of the push post is connected with the first tube by inserting a joining element into the second tube; the second tube has a slot longitudinally formed on an outer wall thereof; the joining element moves upwardly or downwardly along the slot; the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion; and the deforming portion is sufficiently rigid to shaft itself in an axial direction and deforms and recovers an original shape in a torque direction.