Shape memory material member-based actuator

Patent metadata

Field	Value
Publication number	US-12270386-B2
Application number	US-202318329217-A
Country	US
Kind code	B2
Filing date	Jun 5, 2023
Priority date	Feb 16, 2023
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

An actuator can include one or more shape memory material members. When an activation input is provided to the one or more shape memory material members, the one or more shape memory material members contract, which causes the actuator to morph into an activated configuration. A height of the actuator increases in the activated configuration. The actuator can include a first outer body member and a second outer body member. The first outer body member can include a first portion and a second portion pivotably connected to each other. One or more processors can be operatively connected to selectively activate the one or more shape memory material members.

First claim

What is claimed is:

1. An actuator, comprising:
a first outer body member including a first portion and a second portion pivotably connected to each other, the first outer body member including a first end and a second end;
a second outer body member including a first end and a second end;
a first endcap;
a second endcap positioned opposite the first endcap, the first end of the first outer body member and the first end of the second outer body member being operatively connected to and separated from each other by the first endcap, the second end of the first outer body member and the second end of the second outer body member being operatively connected to and separated from each other by the second endcap; and
a shape memory material member operatively connected to the first endcap and the second endcap,
when an activation input is provided to the shape memory material member, the shape memory material member contracts, thereby causing the actuator to move in a direction that is different from a direction of contraction.

2. An actuator, comprising:
a first outer body member including a first portion and a second portion operatively connected to each other such that the first portion and the second portion are movable relative to each other, the first outer body member including a first end and a second end;
a second outer body member including a first end and a second end;
a first endcap;
a second endcap positioned opposite the first endcap, the first end of the first outer body member and the first end of the second outer body member being operatively connected to and separated from each other by the first endcap, the second end of the first outer body member and the second end of the second outer body member being operatively connected to and separated from each other by the second endcap; and
a shape memory material member operatively connected to the first endcap and the second endcap,
when an activation input is provided to the shape memory material member, the shape memory material member contracts, thereby causing the actuator to morph into an activated configuration in which a height of the actuator increases.

3. The actuator of claim 2 , wherein the first portion and the second portion of the first outer body member are pivotably connected to each other by a hinge.

4. The actuator of claim 2 , further including a biasing member operatively positioned to bias the first outer body member into a non-activated configuration of the actuator.

5. The actuator of claim 2 , further including a push plate operatively connected to the first outer body member, and wherein, when the actuator morphs from a non-activated configuration to the activated configuration, a position of the push plate changes.

6. The actuator of claim 5 , wherein the push plate includes an engaging surface, and wherein the engaging surface has a substantially polygonal shape.

7. The actuator of claim 2 , wherein the second outer body member includes a first portion and a second portion, and wherein each of the first portion and the second portion of the second outer body member is pivotably connected to a base structure.

8. The actuator of claim 7 , further including a biasing member operatively positioned to bias the first portion and the second portion of the second outer body member into a non-activated configuration.

9. The actuator of claim 2 , wherein the shape memory material member is arranged in a serpentine or non-linear pattern.

10. The actuator of claim 2 , wherein the shape memory material member includes a one or more shape memory alloy wires.

11. A system comprising:
an actuator including:
a first outer body member including a first portion and a second portion operatively connected to each other, the first outer body member including a first end and a second end;
a second outer body member including a first end and a second end;
a first endcap;
a second endcap positioned opposite the first endcap, the first end of the first outer body member and the first end of the second outer body member being operatively connected to and separated from each other by the first endcap, the second end of the first outer body member and the second end of the second outer body member being operatively connected to and separated from each other by the second endcap; and
a shape memory material member operatively connected to the first endcap and the second endcap; and

a processor operatively connected to selectively activate the shape memory material member,
when an activation input is provided to the shape memory material member, the shape memory material member contracts, thereby causing the actuator to morph into an activated configuration in which a height of the actuator increases.

12. The system of claim 11 , further including:
one or more power sources operatively connected to supply electrical energy to the shape memory material member, wherein the processor is operatively connected to the one or more power sources, wherein the processor is configured to selectively control a supply of electrical energy to the shape memory material member.

13. The system of claim 11 , wherein the processor is configured to:
activate the shape memory material member to cause the shape memory material member to contract, thereby causing the actuator to morph into the activated configuration.

14. The system of claim 11 , wherein the first portion and the second portion of the first outer body member are pivotably connected to each other by a hinge.

15. The system of claim 14 , wherein the actuator further includes a biasing member operatively positioned to bias the first outer body member into a non-activated configuration of the actuator.

16. The system of claim 11 , wherein the actuator further includes a push plate operatively connected to the first outer body member, and wherein, when the actuator morphs from a non-activated configuration to the activated configuration, the push plate is located at a higher elevation.

17. The system of claim 11 , wherein the second outer body member includes a first portion and a second portion, and wherein each of the first portion and the second portion of the second outer body member is pivotably connected to a base structure.

18. The system of claim 17 , further including a biasing member operatively positioned to bias the first portion and the second portion of the second outer body member into a non-activated configuration.

19. The system of claim 11 , wherein the shape memory material member includes a shape memory alloy wire.

20. An actuator, comprising:
a first outer body member including a first portion and a second portion pivotably connected by a hinge;
a first biasing member operatively positioned to bias the first outer body member into a non-activated configuration;
a push plate operatively connected to the first outer body member;
a second outer body member including a first portion, a second portion, and a base, each of the first portion and the second portion being pivotably connected to the base;
a second biasing member operatively positioned to bias the first portion and the second portion of the second outer body member into the non-activated configuration, the first biasing member does not contact the second outer body member;
a shape memory alloy wire;
a first endcap; and
a second endcap positioned opposite the first endcap, the shape memory alloy wire being operatively connected to the first and second endcaps,
when an activation input is provided to the shape m

Assignees

• Toyota Eng & Mfg North America
• Toyota Motor Co Ltd

Inventors

• Rowe Michael Paul
• Pinkelman Brian J
• Zhu Yufei

Classifications

• F03G7/064

  characterised by its use · CPC title

• F03G7/06143 Primary

  Wires · CPC title