Drive apparatus

1. A drive apparatus, comprising:

a case;

a movable body arranged inside the case and moving along an inner surface the case;

a driver arranged inside the case and configured to drive the movable body;

a controller configured to control the driver;

a power source arranged inside the case and configured to supply power to the driver;

a power receiver arranged inside the case so as to move together with the movable body and configured to receive power from an outside of the case to supply the power to the power source; and

a determinator configured to determine, based on the power received by the power receiver, whether or not the power is supplied from the outside of the case,

wherein, when the determinator determines that the power is supplied, the controller controls the driver to move the movable body and the power receiver to a predetermined power receiving position.

2. The drive apparatus of claim 1 , wherein

the power receiving position is a position where the power received by the power receiver is equal to or greater than a predetermined threshold value.

3. The drive apparatus of claim 1 , further comprising:

a power transmitter position detector configured to detect a position of a power transmitter configured to perform non-contact power supply from the outside of the case to the power receiver,

wherein the controller controls the driver based on a detection result of the power transmitter position detector to move the movable body to the power receiving position.

4. The drive apparatus of claim 1 , further comprising:

an attitude detector configured to detect an attitude of the movable body,

wherein the controller moves, based on a detection result of the attitude detector, the movable body to the power receiving position.

5. The drive apparatus of claim 1 , wherein the power receiver receives power in a non-contact state.

6. The drive apparatus of claim 1 , wherein the determinator determines that the power is supplied from the outside of the case when the power received by the power receiver is equal to or greater than a first threshold value.

7. The drive apparatus of claim 6 , wherein the controller controls the driver to stop the movable body and the power receiver when the determinator determines that the power received by the power receiver is equal to or greater than a second threshold value that is greater than the first threshold value.

8. The drive apparatus of claim 6 , wherein the controller controls the driver to move the movable body and the power receiver along a predetermined path when the determinator determines that the power received by the power receiver is equal to or greater than the first threshold value.

9. The drive apparatus of claim 6 , wherein the controller controls the driver to move the movable body and the power receiver in a plurality of directions when the determinator determines that the power received by the power receiver is equal to or greater than the first threshold value.

10. The drive apparatus of claim 1 , wherein the controller controls the driver to move the movable body to search for the power receiving position.

11. The drive apparatus of claim 1 , further comprising a strap that is attached to an outside of the case.

12. The drive apparatus of claim 5 , wherein:

the power receiver defines a first plane, and

when the determinator determines that the power is supplied, the controller controls the driver to move the power receiver so that the first plane is substantially parallel to the horizontal plane.

13. The drive apparatus of claim 5 , wherein, when the determinator determines that the power is supplied, the controller controls the driver to move the power receiver along a shape of inside of the case in a direction of gravitational force.

14. A system, comprising:

a first case;

a power transmitter arranged inside the first case and configured to transmit power;

a second case;

a movable body arranged inside the second case and moving along an inner surface of the second case;

a driver arranged inside the second case and configured to drive the movable body;

a controller configured to control the driver;

a power source arranged inside the second case and configured to supply power to the driver;

a power receiver arranged inside the second case so as to move together with the movable body and configured to receive power from the power transmitter to supply the power to the power source; and

a determinator configured to determine, based on the power received by the power receiver, whether or not the power is supplied from the power transmitter in the first case,

wherein, when the determinator determines that the power is supplied from the power transmitter, the controller controls the driver to move the movable body and the power receiver to a predetermined power receiving position.

15. The drive apparatus of claim 14 , wherein the power receiver, at the predetermined power receiving position, is positioned between the movable body and the power transmitter.

16. The drive apparatus of claim 15 , wherein:

the power receiver defines a first plane and the power transmitter defines a second plane, and

the first plane is substantially parallel to the second plane when the power receiver is positioned at the predetermined power receiving position.

17. The drive apparatus of claim 16 , wherein the second plane is substantially parallel to the horizontal plane.