Lower limb exercise device and exercise system

Patent metadata

Field	Value
Publication number	US-12397191-B2
Application number	US-202318381200-A
Country	US
Kind code	B2
Filing date	Oct 18, 2023
Priority date	Nov 8, 2022
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

A rowing exercise device includes: a pair of pedals; and a device body that guides the pair of pedals in such a way that the pair of pedals repeatedly move along a predetermined trajectory. A user performs a lower limb exercise by putting his/her feet on the pair of respective pedals. Each pedal is configured in such a way that a relative roll turn of a forefoot part relative to the device body is prevented while a relative roll turn of a rearfoot part relative to the forefoot part is allowed, whereby a relative roll turn of the forefoot part relative to the rearfoot part occurs during the lower limb exercise.

First claim

What is claimed is:

1. A lower limb exercise device comprising:
a pair of pedals; and
a device body that guides the pair of pedals in such a way that the pair of pedals repeatedly move along a predetermined trajectory, wherein
a user performs a lower limb exercise by putting his/her feet on the pair of respective pedals, and
each pedal is configured in such a way that a relative roll turn of a forefoot part of the foot of the user relative to the device body is prevented while a relative roll turn of a rearfoot part of the foot of the user relative to the forefoot part is allowed, whereby a relative roll turn of the rearfoot part relative to the forefoot part occurs during the lower limb exercise, each pedal comprises:
a cup part that can accommodate the forefoot part and cannot carry out a roll turn relative to the device body; and
tightening means for squeezing the cup part inward, and

wherein the cup part is squeezed inward by the tightening means, whereby a relative roll turn of the forefoot part relative to the device body is prevented while a relative roll turn of the rearfoot part relative to the forefoot part is allowed.

2. The lower limb exercise device according to claim 1 , wherein
each pedal comprises:
a front orthosis configured to be attached to the forefoot part and cannot carry out a roll turn relative to the device body;
a rear orthosis configured to be attached to the rearfoot part; and
a coupling part that couples the front orthosis to the rear orthosis in such a way that the front orthosis and the rear orthosis can carry out a roll turn relative to each other, and

the front orthosis is configured to be attached to the forefoot part and the rear orthosis is configured to be attached to the rearfoot part, whereby a relative roll turn of the forefoot part relative to the device body is prevented while a relative roll turn of the rearfoot part relative to the forefoot part is allowed.

3. An exercise system comprising:
the lower limb exercise device according to claim 2 ; and
a seat on which the user who performs the lower limb exercise using the lower limb exercise device sits,
wherein the seat is configured in such a way that the seat can carry out a roll turn relative to the device body.

4. The exercise system according to claim 3 , wherein the seat is further configured in such a way that the seat can carry out a yaw turn relative to the device body.

5. The lower limb exercise device according to claim 1 , wherein
each pedal comprises:
a front plate configured to be mounted by the forefoot part and which cannot carry out a roll turn relative to the device body; and
a grip bar that is fixed to the front plate and configured to be gripped by a toe of the forefoot part, and

the forefoot part is placed on the front plate and the grip bar configured to be gripped by the toe of the forefoot part, whereby a relative roll turn of the forefoot part relative to the device body is prevented while a relative roll turn of the rearfoot part relative to the forefoot part is allowed.

6. An exercise system comprising:
the lower limb exercise device according to claim 5 ; and
a seat on which the user who performs the lower limb exercise using the lower limb exercise device sits,
wherein the seat is configured in such a way that the seat can carry out a roll turn relative to the device body.

7. The exercise system according to claim 6 , wherein the seat is further configured in such a way that the seat can carry out a yaw turn relative to the device body.

8. The lower limb exercise device according to claim 1 , wherein each pedal is configured to allow a relative yaw turn of the forefoot part relative to the device body.

9. An exercise system comprising:
the lower limb exercise device according to claim 8 ; and
a seat on which the user who performs the lower limb exercise using the lower limb exercise device sits,
wherein the seat is configured in such a way that the seat can carry out a roll turn relative to the device body.

10. The exercise system according to claim 9 , wherein the seat is further configured in such a way that the seat can carry out a yaw turn relative to the device body.

11. An exercise system comprising:
the lower limb exercise device according to claim 1 ; and
a seat on which the user who performs the lower limb exercise using the lower limb exercise device sits,
wherein the seat is configured in such a way that the seat can carry out a roll turn relative to the device body.

12. The exercise system according to claim 11 , wherein the seat is further configured in such a way that the seat can carry out a yaw turn relative to the device body.

13. The lower limb exercise device according to claim 1 , wherein
tightening means is a shoelace.

14. An exercise system comprising:
the lower limb exercise device according to claim 13 ; and
a seat on which the user who performs the lower limb exercise using the lower limb exercise device sits,
wherein the seat is configured in such a way that the seat can carry out a roll turn relative to the device body.

15. A lower limb exercise device comprising:
a pair of pedals; and
a device body that guides the pair of pedals in such a way that the pair of pedals repeatedly move along a predetermined trajectory, wherein
a user performs a lower limb exercise by putting his/her feet on the pair of respective pedals, and
each pedal is configured in such a way that a relative roll turn of a forefoot part of the foot of the user relative to the device body is prevented while a relative roll turn of a rearfoot part of the foot of the user relative to the forefoot part is allowed, whereby a relative roll turn of the rearfoot part relative to the forefoot part occurs during the lower limb exercise, each pedal comprises:
a front orthosis configured to be attached to the forefoot part and cannot carry out a roll turn relative to the device body;
a rear orthosis configured to be attached to the rearfoot part; and
a coupling part that couples the front orthosis to the rear orthosis in such a way that the front orthosis and the rear orthosis can carry out a roll turn relative to each other, and

wherein the front orthosis is configured to be attached to the forefoot part and the rear orthosis is configured to be attached to the rearfoot part, whereby a relative roll turn of the forefoot part relative to the device body is prevented while a relative roll turn of the rearfoot part relative to the forefoot part is allowed.

16. An exercise system comprising:
the lower limb exercise device according to claim 15 ; and
a seat on which the user who performs the lower limb exercise using the lower limb exercise device sits,
wherein the seat is configured in such a way that the seat can carry out a roll turn relative to the device body.

17. The exercise system according to claim 16 , wherein the seat is further configured in such a way that the seat can carry out a yaw turn relative to the device body.

Assignees

• Toyota Motor Co Ltd

Inventors

• Aoki Eisuke
• Ikeda Tomio

Classifications

• A47C9/002

  with exercising means or having special therapeutic or ergonomic effects · CPC title

• A63B2022/0641

  enabling a lateral movement of the exercising apparatus, e.g. for simulating movement on a bicycle · CPC title

• A63B22/0694 Primary

  without integral seat, e.g. portable mini ergometers being placed in front of a chair, on a table or on a bed · CPC title

• A63B22/0605 Primary

  performing a circular movement, e.g. ergometers · CPC title