The rotary suction device includes a suction disk, a middle cover, and an upper cover. The suction disk includes a base and a soft disk. The base includes a peripheral wall, a guide block, an inclined surface, and a central circular trough. The middle cover includes a central through hole around the
The rotary suction device includes a suction disk, a middle cover, and an upper cover. The suction disk includes a base and a soft disk. The base includes a peripheral wall, a guide block, an inclined surface, and a central circular trough. The middle cover includes a central through hole around the peripheral wall and a guide trough. The guide trough is around the guide block, and the middle cover is capable of axial displacement relative to the suction disk. The upper cover includes a central pivot, a sliding block, and an elastic component. The central pivot is accommodated in the central circular trough such that the upper cover is capable of rotating relative to the suction disk. The elastic component is disposed between the upper cover and the suction disk. The sliding block is forced to against the inclined surface by the elastic force of the elastic component.
대표청구항▼
1. A rotary suction device, comprising: a suction disk comprising a base and a soft disk connected to the base, wherein the base comprises a peripheral wall, at least a guide block protruding from the peripheral wall, at least an inclined surface being on the peripheral wall, and a central circular
1. A rotary suction device, comprising: a suction disk comprising a base and a soft disk connected to the base, wherein the base comprises a peripheral wall, at least a guide block protruding from the peripheral wall, at least an inclined surface being on the peripheral wall, and a central circular trough being in an inner side of the base;a middle cover comprising a central through hole being correspondingly around the peripheral wall and at least a guide trough extending outwardly from the central through hole, wherein the at least a guide trough is correspondingly around the at least a guide block, and the middle cover is capable of axial displacement relative to the suction disk; andan upper cover comprising a central pivot, at least a sliding block protruding from the central pivot, and an elastic component, wherein the central pivot is correspondingly accommodated in the central circular trough, the upper cover is capable of rotating relative to the suction disk, the elastic component is between and is respectively against the upper cover and the suction disk, and the at least a sliding block is forced to against the at least an inclined surface by being applied an elastic force from the elastic component. 2. The rotary suction device of claim 1, wherein the middle cover further comprises a hang-down periphery corresponding to the soft disk. 3. The rotary suction device of claim 1, wherein the central pivot comprises an inner trough being around the elastic component, and an end of the elastic component is against a bottom of the inner trough. 4. The rotary suction device of claim 1, wherein the middle cover further comprises an arc trough, the upper cover further comprises an extending arm correspondingly penetrating through the arc trough, and the extending arm comprises a fastener being on the end of the extending arm and slidably fastening the arc trough. 5. The rotary suction device of claim 1, wherein the peripheral wall of the base further comprises at least an assembly hole communicating with the at least an inclined surface. 6. The rotary suction device of claim 5, wherein the at least an assembly hole is formed in an inner side of the at least a guide block. 7. The rotary suction device of claim 1, wherein the upper cover further comprises a handle portion utilized for rotating the upper cover. 8. The rotary suction device of claim 7, wherein the handle portion comprises at least a convex block being on a periphery of the upper cover. 9. The rotary suction device of claim 1, wherein the base comprises at least two inclined surfaces arranged in an equiangularly spaced relation, the upper cover further comprises at least two sliding blocks protruding from the central pivot, and the at least two sliding blocks are against the at least two corresponding inclined surfaces. 10. The rotary suction device of claim 1, wherein the base comprises at least two guide blocks arranged in an equiangularly spaced relation, the middle cover comprises at least two guide troughs, and the at least two guide troughs are respectively around the at least two corresponding guide blocks. 11. The rotary suction device of claim 1, wherein the base further comprises a positioning column being in the central circular trough, and the elastic component is a spring being around the positioning column.
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