Abstract: A spring assist system for a canopy frame. The system including an extension spring, an upper center cap, and a lower center cap. One end of the extension spring is coupled to the upper center cap and the other end is coupled to the lower center cap. A force of the extension spring draws, in an axial direction, the lower center cap toward the upper center cap to decrease a length of the extension spring.

Abstract: A snap-in and support structure of a tent support is disclosed that includes a tube piece, a tube holder, a handle, a stop piece, and a locking sleeve. A handle slides in an axial direction opposite to that of the tube holder. A locking sleeve includes a boss integrally formed on an inner circumferential wall. The boss has a slidably coupled inner surface and a top surface. The slidably coupled inner surface on a first side ascends from a bottom to a top of the inner circumferential wall. The tube piece is vertically slidable in an axial direction opposite to that of the tube holder and the handle. A first locking pin transversely slides against the slidably coupled inner surface and stops above the top surface and is proximal to a second side of the slidably coupled inner surface in a locking state.

Abstract: The utility model discloses a clamping and supporting structure of tent support, including a tube piece, a tube holder, and a handle arranged under the tube holder. The bottom of the tube piece passes through the tube holder and the handle and can extend oppositely. A locking sleeve is fixed with the tube holder and provides an inner wall of the locking sleeve is provided with a boss including a guide inclined surface is formed on a first side and ascends spirally from the bottom to the top. The tube piece is provided with a first locking pin and a second locking pin and can move opposite to the tube holder and the handle in the vertical direction and keep the trend of extending oppositely: the first locking pin is propped against the guiding inclined surface, and the second locking pin keeps the trend of propping against the stop piece.