Patent ID: 11959293
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E  F  A | IPC A  E  F

Claim 1:
2. The umbrella seat of claim 1, wherein the seat tube plug is a cylindrical structure matched with the inner hole of the sleeve;
a flange resisted against the upper end face of the sleeve is disposed at the upper end of the seat tube plug, and a connecting pin hole is disposed radially at the lower end of the seat tube plug;
a connecting hole is disposed on the sleeve, the seat tube plug is positioned to the sleeve by passing a limiting pin through the connecting hole and the connecting pin hole;
an extension portion resisted against the lower end of the rotary block for limiting is disposed at the outer end of the limiting pin; and
the rotary block is rotatably sleeved on the sleeve and is limited between the limiting pin and the flange of the seat tube plug.