Abstract: An umbrella rib structure includes a central post, a plurality of main ribs surrounding the central post and pivoted to a top section of the central post, a sleeve fitted the central post for slidable movement, and a plurality of sub ribs. Each of the main ribs includes an orientation portion, which has two parallel erected walls extending therefrom and two elongated slots formed through the two parallel erected walls respectively. Each of the sub ribs connects to the respective one of the main ribs and the sleeve, and includes a T-shaped conjunction, which has a support portion and a transverse bar connected to the support portion and latched with the two elongated slot. Whereby the transverse bar of the T-shaped conjunction of each sub rib can move slidably along the two elongated slots of the respective main rib, so that each sub rib connects with the respective main rib.

Abstract: An umbrella comprises a tube having a lower handle and having an upper whalebone device. A barrel is slidably engaged on the tube and couple to the whalebone device. A spring-biased catch is received in the tube and selectively engaged with the barrel to lock the barrel to the tube. A covering ring is engaged on an upper portion of the barrel to cover a wire fixed thereon for providing a safe configuration, whereby when the hand pulling the barrel to be caught with the spring-biased catch will be prevented from scraping due to the exposed wire fixed on the ring of the barrel.

Abstract: The present invention proposes an improved pull rod structure of a self-opening umbrella, wherein joints are disposed in stretchers. The joints are made of plastic material. The present invention is characterized in that each of the joints has a soft pull rod integrally formed therewith. The other end of each of the soft pull rods is installed in a lower nest. The joints are exploited to facilitate the assembly of a self-opening umbrella.

Abstract: The present invention proposes an improved pull rod structure of a self-opening umbrella, wherein joints are disposed in stretchers. The joints are made of plastic material. The present invention is characterized in that each of the joints has a soft pull rod integrally formed therewith. The other end of each of the soft pull rods is installed in a lower nest. The joints are exploited to facilitate the assembly of a self-opening umbrella.