Patent ID: 8360085

Claim:
A top support structure of a tent frame, comprising a pivot holder, the pivot holder being pivotally connected with support poles, an elastic member provided between the pivot holder and each of the support poles, the elastic member being bent to store an elastic energy when the tent frame is folded, the elastic member automatically springing a corresponding support pole when the elastic energy is released, a first end of the elastic member fixed to an inner side of a pivot trough of the pivot holder, a second end of the elastic member connected to the support pole; a control holder provided under the pivot holder and pivotally connected to the pivot holder, the control holder comprising: a control plate, and a handle disposed under the control plate, wherein the control plate comprising: lock pieces to hold against the support poles for limiting rotation of the support poles, and a release trough formed between two adjacent lock pieces, with each of the lock pieces including an arc guide slot, an axis of a guide slot overlapped with an axis of the control holder a central angle of the guide slot is equal, in size, to a central angle between two adjacent release troughs; the pivot holder is provided with a guide post; and a lower end of the guide post is moveably connected in the arc guide trough.