Hinge and hinge roll

1. A hinge configured to connect a first pivoting body to a second pivoting body in a relatively pivotable manner, the hinge comprising

a sheet body configured to attach a first end of the sheet body to the first pivoting body, and to attach a second end of the sheet body to the second pivoting body, the sheet body including:

a plurality of layered sheet members, and

a pivot shaft between layered sheet members of the plurality of layered sheet members to allow the first end and the second end of the sheet body to pivot relative to each other, the pivot shaft including a bulge projecting outwardly at one layered sheet member of the plurality of layered sheet members on a major face of the sheet body,

wherein the bulge is configured to increase a distance between the layered sheet members toward the major face compared with a distance between the layered sheet members at the first end or the second end of the sheet body, and

a pivot center configured to allow the first end and the second end of the sheet body to pivot relative to each other is inside the bulge and between the major face and a highest bulge point of the bulge.

2. The hinge according to claim 1 , wherein the pivot shaft further includes a cavity between the layered sheet members.

3. The hinge according to claim 1 , wherein the pivot shaft further includes a soft resin part between the layered sheet members, and

the soft resin part is between the major face and the highest bulge point of the bulge.

4. The hinge according to claim 1 , wherein the pivot shaft further includes an axial member between the layered sheet members, and

the axial member is between the major face and the highest bulge point of the bulge.

5. The hinge according to claim 1 , further comprising a design part covering at least part of the sheet body.

6. The hinge according to claim 1 , wherein at least one of the plurality of layered sheet members includes fiber material, and

the sheet body has at least part of the fiber material woven with inclination with respect to the pivot shaft.

7. The hinge according to claim 1 , wherein the sheet body further includes an identification part for identifying the pivot shaft.

8. The hinge according to claim 1 , wherein at least one of the first end or the second end has a reinforcing plate between the layered sheet members or outside the layered sheet members.

9. The hinge according to claim 2 , wherein at least one of the first end or the second end has a reinforcing plate between the layered sheet members or outside the layered sheet members.

10. The hinge according to claim 1 , wherein

the bulge projects outwardly at the one layered sheet member of the plurality of layered sheet members on the major face of the sheet body in an open state, wherein an angle between the first end of the sheet body and the second end of the sheet body is 180°.

11. The hinge according to claim 1 , wherein

the plurality of layered sheet members includes:

a first sheet member, and

a second sheet member layered over the first sheet member in a first direction,

the bulge projects outwardly at the second sheet member away from the first sheet member in the first direction, and

a surface of the second sheet member defining the bulge corresponds to the major face of the sheet body.

12. The hinge according to claim 1 , wherein

the plurality of layered sheet members includes:

a first sheet member, and

a second sheet member layered over the first sheet member in a first direction, and

the pivot shaft further includes a cavity between the first sheet member and the second sheet member in the first direction.