Ring with rotation and lock function to display multiple anniversaries

1. A ring with a rotation and a lock function to display multiple anniversaries, the ring comprising:

a main ring including engagement areas that engagement grooves are positioned on and distant areas positioned between the engagement areas;

a sub-ring engaged with the main ring in a rotatable and fixable way, and

engagement members positioned between the main ring and the sub-ring,

wherein the sub-ring includes a receiver that receives an engagement member;

wherein the receiver includes a first side, a second side facing the first side and connected to an opening area, a third and a fourth side respectively connecting between the first and the second side;

wherein a length of the opening area in a first direction is shorter than a length of the first side in the first direction;

wherein the engagement member is made of materials having elasticity and positioned in the receiver;

wherein when the opening area is aligned with an engagement groove area, a portion of the engagement member is protruded from the receiver outwardly and engaged with an engagement groove;

wherein when the opening area is aligned with a distant area, the portion of the engagement member is inserted in the receiver.

2. The ring of claim 1 , wherein the main ring includes:

a first part extended in the first direction,

a third part spaced apart from the first part in a second direction intersecting the first direction,

a fifth part spaced apart from the first part in an opposite direction to the second direction,

a second part connecting between the first and the third part, and

a fourth part connecting between the first and the fifth part.

3. The ring of claim 2 , wherein each of lengths of the first, the third, and the fifth part in the first direction is longer than each of lengths of the second and the fourth part in the first direction,

wherein a first main ring groove is defined by length differences formed by the first, the second, and the third part, and a second main ring groove is defined by length differences formed by the first, the fourth, and the fifth part.

4. The ring of claim 3 , wherein the engagement grooves are positioned on the second and the fourth part, and the engagement grooves are extended in the second direction.

5. The ring of claim 4 , wherein each of thicknesses of the first, the third, and the fifth part in the second direction is thinner than each of thicknesses of the second and the fourth part in the second direction,

wherein the thickness of the first part in the second direction is thicker than each of the thicknesses of the second and the fourth part in the second direction.

6. The ring of claim 5 , wherein the second and the third part are formed as one body,

wherein the fourth and the fifth part are formed as one body,

wherein the sub-ring includes a first and a second sub-ring that are spaced apart from each other, and the first sub-ring is engaged with the second part, and the second sub-ring is engaged with the fourth part.

7. The ring of claim 6 , further comprising:

an insertion groove positioned on the first part of the main ring;

a first display positioned on an outer circumference surface of the first sub-ring, and

a second display positioned on an outer circumference surface of the second sub-ring,

the first display includes numbers from 1 to 12 that are engraved in intaglio, and the second display includes numbers from 1 to 31 that are engraved in intaglio.