Umbrella structure
OwnerFutien Liuinventor
Life of this patent
Estimating the term…
Abstract
A novel umbrella structure, comprises mainly a shaft, two surface frames, and two connecting parts; wherein, the connecting parts are formed basically by crossing two ribs with each other, and linking them with an main notch and a main runner provided on the shaft and with an sub-notch and sub-runner provided on the surface frames, such that each surface frame can be linked on both symmetrical sides of the shaft, respectively, by the connecting part. As the main runner provided as a sleeve around the shaft slides up and down, the sub-runner on the surface frame will be driven by the connecting parts and slide up and down correspondingly, and its distance to the sub-notch is exactly equal to the distance from the main runner to the main notch and thereby, the umbrella surface can be completely spread out.
Claims10
A collapsible umbrella frame structure comprising:
- (a) a shaft having an intermediate portion extending longitudinally from a top end portion, said top end portion defining a main notch;
- (b) a main runner slidably engaging said intermediate portion of said shaft, said main runner being displaceable relative to said intermediate portion between umbrella opening and closing positions;
- (c) a pair of surface frames disposed on opposing lateral sides of said shaft, each said surface frame including a sub-notch and a branched rib extending therefrom, said surface frame including a sub-runner and a main rib extending therefrom, said branched rib being pivotally coupled to a free end of said main rib, said main rib having an auxiliary rib pivotally coupled to extend from an intermediate portion thereof, said sub-notch and said sub-runner being displaceably spaced one relative to the other;
- (d) a pair of connecting parts each extending between said shaft and one of said surface frames, each said connecting part including first and second ribs pivotally joined in cross-linked manner, said first rib extending between said main notch and said sub-runner of said one surface frames, said second rib extending between said main runner and said sub-notch of said one surface frames;
- whereby the space between said sub-runner and said sub-notch of each said surface frame is variable responsive to the displacement of said main runner between said umbrella opening and closing positions to alternatively expand and collapse the umbrella frame.
A collapsible umbrella frame structure comprising:
- (a) a shaft having an intermediate portion extending longitudinally from a top end portion, said top end portion defining a main notch;
- (b) a main runner slidably engaging said intermediate portion of said shaft, said main runner being displaceable relative to said intermediate portion between umbrella opening and closing positions;
- (c) a pair of surface frames disposed on opposing lateral sides of said shaft, each said surface frame including a sub-notch and a branched rib extending therefrom, said surface frame including a sub-runner and a main rib extending therefrom, said branched rib being pivotally coupled to said main rib, said sub-notch and said sub-runner being displaceably spaced one relative to the other;
- (d) a pair of connecting parts each extending between said shaft and one of said surface frames, each said connecting part including first and second ribs pivotally joined in cross-linked manner, said first rib extending between said main notch and said sub-runner of said one surface frame, said second rib extending between said main runner and said sub-notch of said one surface frame, at least one of said first and second ribs of each connecting part having formed through an intermediate portion thereof a port, said port receiving the other of said first and second ribs therethrough;
- whereby the space between said sub-runner and said sub-notch of each surface frame is variable responsive to the displacement of said main runner between said umbrella opening and closing positions to alternatively expand and collapse the umbrella frame.
Dependencies are inferred from the claim text.