Motion detecting device

1. A motion detecting device for detecting a motion of an operator's finger for remotely operating a multi-articulated robot, the motion detecting device comprising:

a device main body that is installed such that the finger is placed thereon;

a contact part that is where the finger contacts the device main body and has a shape following a shape of the finger; and

a detection part that detects the motion of the finger on the basis of a pressing state of the finger against the contact part,

wherein the contact part includes a rotating part that rotates around an axis perpendicular to a longitudinal direction of the finger in accordance with a pressing of the finger,

wherein the detection part includes a position detection part that detects a position of a fingertip of the finger on the rotating part,

wherein the detection part detects the motion of the finger to estimate a posture of the finger, on the basis of the rotation amount of the rotating part and the position of the fingertip detected by the position detection part.

2. The motion detecting device according to claim 1 , wherein

a region of the contact part that is contacted by a pad of the finger is curved at a predetermined curvature.

3. The motion detecting device according to claim 1 , wherein

a surface of the rotating part pressed by the finger is a curved surface having a predetermined curvature along an outer peripheral surface of the device main body.

4. The motion detecting device according to claim 1 , wherein

the detection part further detects the posture of the finger on the basis of the pressing state of the finger against the contact part.

5. The motion detecting device according to claim 1 , wherein

the contact part is a groove part that follows the shape of the finger.

6. The motion detecting device according to claim 5 , wherein

the groove part is formed on the outer peripheral surface of the device main body.

7. The motion detecting device according to claim 1 , wherein

the device main body has an insertion hole in which the finger can be inserted, and the contact part is provided in the insertion hole.

8. The motion detecting device according to claim 1 , wherein

the device main body has a spherical part having a spherical shape or a shape which is partially ellipsoid or entirely ellipsoid, and

the contact part is provided on the outer peripheral surface of the spherical part.

9. The motion detecting device according to claim 1 , wherein

the detection part is arranged at a position corresponding to at least one of a proximal phalange, middle phalange, and distal phalange of the finger contacting the contact part, and has a phalange detection part for detecting a pressing state of the finger.

10. The motion detecting device according to claim 9 , wherein

a plurality of the phalange detection parts are arranged at positions corresponding to the proximal phalange, the middle phalange, and the distal phalange of the finger.

11. The motion detecting device according to claim 1 , wherein

the detection part is arranged at a position corresponding to at least one of the proximal phalange, the middle phalange, and the distal phalange of the finger contacting the contact part, and has a phalange detection part for detecting a pressing state of the finger, and

the phalange detection part and the position detection part are provided on the rotating part.

12. The motion detecting device according to claim 6 , wherein

the detection part is arranged in a region of the groove part where a side surface of the finger contacts and detects the motion of the finger at least in one of the right and left directions.

13. The motion detecting device according to claim 7 , wherein

the detection part is arranged in a region of the insertion hole where the side surface of the finger contacts and detects the motion of the finger at least in one of the right and left directions.

14. The motion detecting device according to claim 1 , further comprising:

a force sense generating part that generates a force sense corresponding to a reaction force from an object when the multi-articulated robot touches the object.

15. The motion detecting device according to claim 14 , wherein

the force sense generating part includes

a driving part that rotates the rotating part in a second direction that is a direction opposite of the first direction, wherein

the driving part causes the rotating part to rotate in the second direction to generate the force sense.

16. The motion detecting device according to claim 1 , wherein the motion detecting device is configured to communicate with a control device to operate the multi-articulated robot and the estimated posture is provided to the control device so that the control device operates the multi-articulated robot to correspond with the estimated posture.