公开(公告)号：US20210401659A1

公开(公告)日：2021-12-30

申请号：US17294824

申请日：2019-11-08

Applicant: NEC CORPORATION

Inventor： Tadashi OOKOBA

IPC: A61H3/00 ,  A61H1/02 ,  G16H20/30 ,  B25J9/00

Abstract: A load reduction device including a torque estimation unit configured to calculate stance torque output during a stance period and swing torque output during a swing period by a drive mechanism for outputting torque to reduce a load on a user at joints of legs of the user, on the basis of values of loads on soles of the legs and an angle at each of the joints of the legs; a stance/swing determination unit configured to determine whether each of the legs is in a stance state or a swing state; and a torque output smoothing unit configured to smooth, upon a switch in a state of the each of legs, a transition in the torque output by the drive mechanism in accordance with an elapsed time on the basis of the stance torque and the swing torque.

公开(公告)号：US20220016785A1

公开(公告)日：2022-01-20

申请号：US17292481

申请日：2019-11-08

Applicant: NEC Corporation

Inventor： Tadashi OOKOBA ,  Hisashi ISHIDA

IPC: B25J11/00 ,  B25J13/08

Abstract: A ground reaction force load difference calculation unit configured to calculate a ground reaction force load difference that is an amount of a load relief for a user, on the basis of a first measured value that a weight, based on a weight of the user and a weight of the load reduction device that reduces a load on the user and has a mechanism that holds luggage and is at least worn by the user, is transmitted to a ground contact surface and of a second measured value that a weight based on the weight of the user is transmitted to the ground contact surface; and a torque control unit configured to control, on the basis of the ground reaction force load difference, torque that is output by the load reduction device to reduce the load on the user at an joint of each leg of the user.

公开(公告)号：US20220000699A1

公开(公告)日：2022-01-06

申请号：US17292925

申请日：2019-11-08

Applicant: NEC Corporation

Inventor： Tadashi OOKOBA

IPC: A61H3/00 ,  G05B19/4155

Abstract: A load reduction assistance device is provided with an acquisition unit configured to acquire position information of a user wearing a load reduction device that reduces a load on the user; a status detection unit configured to extract an operation mode of the load reduction device corresponding to a surrounding environment state based on the position information of the user; and an operation control unit configured to cause the load reduction device to operate in the extracted operation mode.

公开(公告)号：US20210401658A1

公开(公告)日：2021-12-30

申请号：US17292914

申请日：2019-11-08

Applicant: NEC Corporation

Inventor： Tadashi OOKOBA

IPC: A61H3/00 ,  A61H1/02 ,  A45F3/08 ,  B25J9/16 ,  B25J9/00 ,  B25J19/00

Abstract: This load reduction device is provided with: a shock absorption mechanism configured to absorb impact force generated when a user moves; a drive mechanism configured to output torque for reducing a load applied to the user at a joint of a leg of the user; and a torque control unit configured to control the torque output by the drive mechanism on the basis of operation of the shock absorption mechanism.

公开(公告)号：US20210393467A1

公开(公告)日：2021-12-23

申请号：US17292765

申请日：2019-11-14

Applicant: NEC Corporation

Inventor： Tadashi OOKOBA

IPC: A61H3/00 ,  B25J9/00

Abstract: A load reduction device includes a determination unit configured to determine a repeated motion that is repeated by a user; and a torque control unit configured to control, by comparing a characteristic extracted on the basis of machine learning for repeated motions and a reference model, torque output by a drive mechanism to reduce a load on the user at a joint of a leg of the user.