Connecting structure

1. A connecting structure, for disposing at least one device onto an object, the object comprising a first connecting element, the device comprising a second connecting element, the connecting structure comprising:

a main body, being formed with a plurality of areas, each of the areas having a cavity and an axis passing therethrough, and each of the cavities having an opening;

a plurality of rotary discs, each of the rotary discs being rotatably disposed in each of the cavities correspondingly, wherein each of the rotary discs has a top surface, a disc body and a hook, and the axis perpendicularly passes through a center of the top surface, wherein each of the rotary discs is able to rotate about the axis, each of the disc bodies is disposed at each of the openings correspondingly and each of the hooks extends from each of the disc bodies along each of the axes toward each of the cavities to connect to an inner surface of the main body correspondingly, so that the rotary discs are able to engage with the main body; and

a joint set, for connecting the object and the device, the joint set comprising at least one third connecting element and at least one fourth connecting element, wherein one of the at least one third connecting element or one of the at least one fourth connecting element is disposed on one of the rotary discs respectively;

wherein the fourth connecting element of the connecting structure matches with the first connecting element of the object for detachably connecting to each other, and the third connecting element of the connecting structure matches with the second connecting element of the device for detachably connecting to each other.

2. The connecting structure of claim 1 , wherein each the cavity has a large diameter section and a small diameter section extending from the large diameter section and connecting to each the opening correspondingly, and each the hook has a hooking portion and an extending portion, wherein each the hooking portion is disposed in each the large diameter portion and engages with each the inner surface of the main body correspondingly, and each the extending portion is accommodated in each the small diameter section correspondingly.

3. The connecting structure of claim 2 , wherein the axes all pass through a center point of the main body.

4. The connecting structure of claim 3 , wherein the sum of the number of the third connecting elements and the number of the fourth connecting elements is equal to the number of the rotary discs.

5. The connecting structure of claim 4 , wherein the number of the third connecting elements is three, and the rotary discs which are corresponding to the third connecting elements are disposed on the main body with intervals, and the number of the fourth connecting elements is two, and the rotary discs which are corresponding to the fourth connecting elements are disposed at opposite ends of the main body.

6. The connecting structure of claim 5 , wherein the third connecting element has a plurality of connecting plates and a locking rod, and the fourth connecting element has a plurality of connecting plates, wherein each the connecting plate extends from each the top surface along each the axis away from the main body correspondingly.

7. The connecting structure of claim 6 , wherein the number of the connecting plates of the third connecting element is three in which the connecting plates are correspondingly disposed on the rotary discs with intervals, and the number of the connecting plates of the fourth connecting element is two in which the connecting plates are correspondingly disposed on the rotary discs with interval.

8. The connecting structure of claim 7 , wherein each of the connecting plates has a hole, the holes of the connecting plates of the same third connecting element are penetrated by a central axis, and the holes of the connecting plates of the same fourth connecting element are penetrated by another central axis.

9. The connecting structure of claim 8 , wherein the locking rod has a rod body and a nut being disposed on one side of one of the connecting plates of the third connecting element, wherein the rod body is able to pass through the holes and be screwed with the nut when the connecting structure is connected to the object so that the connecting structure is able to pivot with respect to the object along the central axis, and the rod body is able to pass through the holes and be screwed with the nut when the connecting structure is connected to the device so that the device can pivot with respect to the connecting structure along the central axis.

10. The connecting structure of claim 1 , wherein the first connecting elements and the third connecting elements are protrusions, and the second connecting elements and the fourth connecting elements are recesses, wherein the protrusions match and engage with the corresponding recesses.

11. The connecting structure of claim 1 , wherein the first connecting elements and the third connecting elements are screws, and the second connecting elements and the fourth connecting elements are screw holes, wherein the screws match and are screwed with the corresponding screw holes.