Case and timepiece

1. A case comprising:

a case main body;

an exterior cover formed of a synthetic resin and mounted on an upper portion and an outer circumferential portion of the case main body to cover the upper portion and the outer circumferential portion; and

a reinforcement member formed of a synthetic resin harder than the exterior cover and embedded in an inner surface of the exterior cover to prevent an inner circumferential side of the exterior cover from being bent back relative to the case main body,

wherein the reinforcement member comprises:

a first reinforcing portion configured to correspond to an upper end portion of the case main body;

a second reinforcing portion configured to correspond to an outer circumferential surface of the upper end portion of the case main body; and

a third reinforcing portion configured to correspond to a notch portion provided on an outer circumference of an upper portion of the case main body.

2. The case according to claim 1 ,

wherein the reinforcement member comprises a shock releasing portion configured to release a shock when the shock is exerted on the exterior cover from above.

3. The case according to claim 1 ,

wherein the reinforcement member comprises:

a shock releasing portion configured to release a shock when the shock is exerted on the first reinforcing portion, the second reinforcing portion and the exterior cover from above; and

a deformation restriction portion configured to restrict deformation of the shock releasing portion.

4. The case according to claim 3 ,

wherein the deformation restriction portion comprises:

a first restricting portion arranged on the inner surface of the exterior cover located on an outer circumferential portion side thereof and configured to correspond to an upper surface of the notch portion provided on the outer circumference of the upper portion of the case main body; and

a plurality of second restricting portions bridged between the second reinforcing portion and the first restricting portion and configured to restrict deformation of the second reinforcing portion and the first restricting portion relative to each other.

5. The case according to claim 1 ,

wherein the reinforcement member comprises a plurality of biting holes allowing the exterior cover to bite and be fixed thereto.

6. The case according to claim 2 ,

wherein the reinforcement member comprises a plurality of biting holes allowing the exterior cover to bite and be fixed thereto.

7. The case according to claim 3 ,

wherein the reinforcement member comprises a plurality of biting holes allowing the exterior cover to bite and be fixed thereto.

8. The case according to claim 4 ,

wherein the reinforcement member comprises a plurality of biting holes allowing the exterior cover to bite and be fixed thereto.

9. The case according to claim 1 ,

wherein the reinforcement member is configured such that at least an edge portion of an inner circumferential side of the first reinforcing portion is exposed to an outside of the inner circumferential side of the exterior cover.

10. The case according to claim 3 ,

wherein the reinforcement member is configured such that at least an edge portion of an inner circumferential side of the first reinforcing portion is exposed to an outside of the inner circumferential side of the exterior cover.

11. The case according to claim 4 ,

wherein the reinforcement member is configured such that at least an edge portion of an inner circumferential side of the first reinforcing portion is exposed to an outside of the inner circumferential side of the exterior cover.

12. A timepiece comprising the case according to claim 1 .

13. A timepiece comprising the case according to claim 2 .

14. A timepiece comprising the case according to claim 3 .

15. A timepiece comprising the case according to claim 5 .