Wave receiving mechanism

Patent metadata

Field	Value
Publication number	US-11739728-B2
Application number	US-201916968427-A
Country	US
Kind code	B2
Filing date	Feb 6, 2019
Priority date	Feb 7, 2018
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A wave receiving mechanism includes: a shaft driving a hydraulic pump; and a wave receiving member including an arm and wave receiving plate, the arm unrotatably attached to the shaft, the plate being at the arm receiving a wave force, the wave receiving member swinging about the shaft by receiving the wave force and turning the shaft turn. The arm includes first and second arm portions, and a bendable portion, the first arm portion unrotatably attached to the shaft, the second arm portion being at the plate, the bendable portion coupling the first and second arm portions. When a swing angle of the first arm portion is less than a first predetermined angle, the bendable portion makes the arm portions swing integrally. When the swing angle of the first arm portion is the predetermined angle, the bendable portion allows the second arm portion to bend relative to the first.

First claim

The invention claimed is:

1. A wave receiving mechanism comprising:
a shaft connected to a hydraulic pump and supported so as to be turnable, the shaft being configured to drive the hydraulic pump by turning toward a first side or second side in a circumferential direction; and
a wave receiving member including an arm and a wave receiving plate, the arm being attached to the shaft so as to be unrotatable relative to the shaft, the wave receiving plate being provided at the arm so as to receive force of waves, the wave receiving member being configured to swing about the shaft by receiving the force of the waves and make the shaft turn by the swinging, wherein:
the arm includes a first arm portion, a second arm portion, and a bendable portion, the first arm portion being attached to the shaft so as to be unrotatable relative to the shaft, the second arm portion being provided at the wave receiving plate, the bendable portion being configured to couple the first arm portion and the second arm portion to each other;
when a swing angle of the first arm portion is less than a first predetermined angle, the bendable portion makes the first arm portion and the second arm portion swing integrally; and
when the swing angle of the first arm portion is the predetermined angle, the bendable portion allows the second arm portion to bend relative to first arm portion.

2. The wave receiving mechanism according to claim 1 , wherein:
the bendable portion includes an engaging portion and an engaged portion, the engaging portion being provided at one of the first arm portion and the second arm portion, the engaged portion being provided at the other of the first arm portion and the second arm portion and configured to be engaged with the engaging portion;
when the engaging portion and the engaged portion are engaged with each other, the bendable portion makes the first arm portion and the second arm portion swing integrally; and
when the engaging portion and the engaged portion are disengaged from each other, the bendable portion allows the second arm portion to bend relative to the first arm portion.

3. The wave receiving mechanism according to claim 2 , further comprising a disengaging member configured to:
contact the bendable portion of the swinging wave receiving member; and
when the first arm portion swings with the disengaging member contacting the bendable portion, make the engaging portion and the engaged portion be displaced relative to each other, and with this, disengage the engaging portion and the engaged portion from each other.

4. The wave receiving mechanism according to claim 3 , wherein:
a portion of one of the engaging portion and the engaged portion includes a roller supported so as to be turnable, the other of the engaging portion and the engaged portion being engaged with the portion of the one of the engaging portion and the engaged portion; and
when disengaging the engaging portion and the engaged portion from each other, the roller rolls on the other of the engaging portion and the engaged portion.

5. The wave receiving mechanism according to claim 1 , further comprising a stopper member configured to, when the first arm portion swings at a second predetermined angle that is the first predetermined angle or more, contact the first arm portion to restrict the swinging of the first arm portion.

6. The wave receiving mechanism according to claim 1 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

7. The wave receiving mechanism according to claim 2 , further comprising a stopper member configured to, when the first arm portion swings at a second predetermined angle that is the first predetermined angle or more, contact the first arm portion to restrict the swinging of the first arm portion.

8. The wave receiving mechanism according to claim 3 , further comprising a stopper member configured to, when the first arm portion swings at a second predetermined angle that is the first predetermined angle or more, contact the first arm portion to restrict the swinging of the first arm portion.

9. The wave receiving mechanism according to claim 4 , further comprising a stopper member configured to, when the first arm portion swings at a second predetermined angle that is the first predetermined angle or more, contact the first arm portion to restrict the swinging of the first arm portion.

10. The wave receiving mechanism according to claim 2 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

11. The wave receiving mechanism according to claim 3 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

12. The wave receiving mechanism according to claim 4 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

13. The wave receiving mechanism according to claim 5 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

14. The wave receiving mechanism according to claim 7 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

15. The wave receiving mechanism according to claim 8 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are coupled to each other such that an axis of the wave receiving shaft and an axis of the pump shaft are parallel to each other, wherein
the flexible joint allows the wave receiving shaft to be displaced relative to the pump shaft in directions perpendicular to the axis.

16. The wave receiving mechanism according to claim 9 , further comprising a flexible joint by which a wave receiving shaft that is the shaft and a pump shaft of the hydraulic pump are

Assignees

• Univ Tokyo
• Kawasaki Heavy Ind Ltd

Inventors

• Maruyama Koki
• Rheem Chang-Kyu
• Kobayashi Hidetaka
• Kuribayashi Naoki

Classifications

• F03B13/182 Primary

  with a to-and-fro movement · CPC title

• F03B13/181 Primary

  for limited rotation · CPC title

• F05B2210/11

  liquid, i.e. incompressible · CPC title

• F05B2240/91

  on a stationary structure · CPC title

• F05B2250/411

  in rotation · CPC title