Connecting member, power supply device, electronic device, and system

1. A connecting member comprising:

a pair of pivots;

a pipe; and

a spring,

wherein each of the pivots comprises a tip portion, a collar portion, an axis portion, and an end portion,

wherein the spring is placed in the pipe and is placed between the pair of pivots,

wherein the end portion is a portion placed in the pipe,

wherein each of the tip portion and the collar portion is a portion projected from the pipe in a natural state,

wherein the axis portion is a portion placed between the collar portion and the end portion,

wherein the axis portion comprises a portion projected from the pipe in a natural state and placed in the pipe when the spring is compressed,

wherein each of the axis portion and the tip portion comprises a conductive portion,

wherein the pair of pivots are electrically insulated from each other, and

wherein the pipe is electrically insulated from each of the pivots.

2. The connecting member according to claim 1 , wherein each of a surface of the end portion and a surface of part of the axis portion on the end portion side in each of the pair of pivots has an insulating property.

3. The connecting member according to claim 1 ,

wherein the spring comprises two spring parts and a cushioning member between the two spring parts, and

wherein a surface of the cushioning member has an insulating property.

4. The connecting member according to claim 3 , wherein the cushioning member and the pipe are integrated with each other.

5. The connecting member according to claim 1 , wherein a surface of the spring has an insulating property.

6. A power supply device comprising:

the connecting member according to claim 1 ;

a battery; and

a band-like exterior body,

wherein the battery comprises a pair of electrodes,

wherein each of the pair of electrodes is electrically connected to the axis portion,

wherein the band-like exterior body is provided to cover the battery and the pipe of the connecting member, and

wherein the tip portion of the connecting member is provided not to be covered by the band-like exterior body.

7. The power supply device according to claim 6 , comprising a pair of conductive members,

wherein the conductive members are electrically connected to the electrodes of the battery, and

wherein the axis portions fit into the conductive members so as to be in contact with each other.

8. The power supply device according to claim 7 , wherein the axis portions fit into the conductive members so as to be rotatable in a rotating direction and to be slidable in an extending direction of the axis portion.

9. The power supply device according to claim 7 , wherein the axis portions fit into the conductive members so as to be fixed in a rotating direction and be slidable in an extending direction of the axis portion.

10. The power supply device according to claim 6 ,

wherein the band-like exterior body is flexible, and

wherein the battery is configured to change its shape following a change in a shape of the band-like exterior body.

11. An electronic device comprising:

a housing; and

a power control circuit,

wherein the housing comprises a pair of bearings,

wherein the power control circuit is placed in the housing,

wherein each of the bearings is capable of being electrically connected to the tip portion of the connecting member,

wherein the pair of bearings are each electrically connected to the power control circuit by wirings, and

wherein the electronic device is attachable with the connecting member according to claim 1 .

12. The electronic device according to claim 11 , comprising a sensor in the housing, wherein the sensor is configured to sense whether the pair of bearings are electrically insulated from or electrically connected to each other.

13. The electronic device according to claim 11 , comprising a sensor in the housing, wherein the sensor is configured to sense a potential difference between the pair of bearings.

14. A system comprising:

a housing;

a pair of bearings;

a control portion;

a power supply control portion;

a first battery;

a sensor; and

a functional circuit,

wherein the pair of bearings, the control portion, the power supply control portion, the first battery, the sensor, and the functional circuit are provided in the housing,

wherein the sensor is configured to output a potential difference between the pair of bearings to the control portion as a potential information,

wherein the power supply control portion is controlled by the control portion and is configured to output any one of power of the first battery and power supplied from the pair of bearings to the functional circuit, and

wherein the control portion is configured to control the power supply control portion to output power of the first battery when the potential information is information indicating any of a conductive state, an insulated state, and a state in which the potential difference is under a predetermined value and is configured to control the power supply control portion to output the power supplied from the pair of bearings when the potential information is information indicating a state in which the potential difference is greater than or equal to the predetermined value.

15. The system according to claim 14 , comprising a power receiving portion,

wherein the power supply control portion is configured to output power supplied from the power receiving portion to the first battery and the pair of bearings, and

wherein the control portion is configured to control the power supply control portion to output the power supplied from the power receiving portion to the bearings when the potential information is information indicating a state in which the potential difference is under the predetermined value.