Abstract: A suction cup comprises a suction cup member, a press ring, a first housing and an insertion pin. The suction cup member includes an assembly surface and a suction surface. The assembly surface includes a first protrusion having a first cut-out slot formed thereon. The press ring is pressed onto an upper outer edge of the suction cup member. The first housing is pressed onto the press ring and includes a second protrusion for mounting onto the first protrusion. One side of the second protrusion includes a first through hole corresponding to the first cut-out slot to expose the first cut-out slot. The insertion pin partially engages with the first housing and slidably engages with the first through hole and the first cut-out slot to move in the first cut-out slot and to drive the suction cup member to move upward while forming a vacuum space underneath thereof simultaneously.

Abstract: A cap closing structure for a sealed container includes an upper cover, a lower cover, an elastic element and a handle member. The upper cover includes a top plate having a through hole and a circumferential bracket having a retaining slanted surface. The lower cover underneath the upper cover includes a base plate having a latch member penetrating into the through hole and a sealing ring. The latch member includes a guiding structure. One end of the sealing ring is at outer side of the retaining slanted surface. The elastic element is mounted onto the latch member and clamped between the top and base plates. The handle member includes a dial lever and an arm with a shaft operably moving inside the guiding structure for the sealing ring to be sealed between the retaining slanted surface and container.

Abstract: A cover structure of a sealed can includes an upper cover, a lower cover, a handle component, an elastic member and a sealing ring. The upper cover has a through hole; the lower cover is installed under the upper cover; the handle component includes a connecting lever, a shifting handle and a pivot connecting the connecting lever and shifting handle, and the connecting lever passing through the through hole and then connecting the lower cover; each elastic member is elastically clamped between the upper and lower covers; the sealing ring has an end coupled to the lower cover and the other end extending towards the upper cover; the connecting lever is formed at the center of the lower cover, and each elastic member is installed symmetrically on both sides with respect to the connecting lever. This structure features simple structure and uniform force exertion and has good sealing effect.