Morphable body with shape memory material members

Patent metadata

Field	Value
Publication number	US-10933974-B2
Application number	US-201916396872-A
Country	US
Kind code	B2
Filing date	Apr 29, 2019
Priority date	Apr 29, 2019
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A body can be configured to be selectively morphable. The body can be at least partially hollow. The body can include a surface. A shape memory material member, such as a shape memory alloy wire, can extend along the surface. The shape memory material member can include a first region, a second region, and a central region located between the first region and the second region. The first and second regions of the shape memory material member can be constrained on the surface, such as by stitches. The central region of the shape memory material member can be unconstrained on the surface. When activated, the shape memory material member can contact, causing the body to bend in the central region due being constrained in the first and second regions. Thus, the body can be morphed into an activated configuration.

First claim

What is claimed is:

1. A morphable structure comprising:
a body, at least a portion of the body being hollow, the body including a surface; and
a shape memory material member extending along the surface, the shape memory material member including a first region and a second region, the shape memory material member including a central region located between the first region and the second region,
the shape memory material member being constrained on the surface in the first region by stitches, the shape memory material member being constrained on the surface in the second region by stitches, the central region of the shape memory material member being unconstrained on the surface,
when activated, the shape memory material member causes the body to bend in the central region, whereby the body is morphed into an activated configuration.

2. The morphable structure of claim 1 , wherein the shape memory material member is a shape memory alloy wire.

3. The morphable structure of claim 1 , wherein the surface is an external surface of the body.

4. The morphable structure of claim 1 , wherein the body is configured to be inflatable.

5. The morphable structure of claim 1 , wherein the first region has a first length, wherein the second region has a second length, wherein the central region has a third length, and wherein the first length and the second length is greater than the third length.

6. A system for morphing a body, the system comprising:
a body, the body including a surface;
a shape memory material member extending along the surface, the shape memory material member including a first region and a second region, the shape memory material member including a central region located between the first region and the second region, the first region and in the second region of the shape memory material member being constrained on the surface by stitches, the central region of the shape memory material member being unconstrained on the surface;
one or more power sources operatively connected to the shape memory material member; and
one or more processors operatively connected to control a supply of electrical energy from the one or more power sources to the shape memory material member, the one or more processors being programmed to initiate executable operations comprising:
determining whether a morphing condition is met; and
responsive to determining that the morphing condition is met, causing electrical energy to be supplied to the shape memory material member from the one or more power sources, whereby the shape memory material member is activated to cause the body to bend in the central region, whereby the body is morphed into an activated configuration.

7. The system of claim 6 , wherein the body is a vehicle component.

8. The system of claim 6 , wherein the body is configured to be inflatable.

9. The system of claim 6 , wherein the shape memory material member is a shape memory alloy wire.

10. The system of claim 6 , further including one or more sensors operatively connected to the one or more processors, wherein the one or more sensors are configured to acquire sensor data about an external environment of the body, and wherein determining whether a morphing condition is met includes comparing acquired sensor data about the external environment of the body to a morphing condition threshold.

11. The system of claim 6 , further including one or more sensors operatively connected to the one or more processors, and wherein the one or more sensors are configured to acquire sensor data about the body, and wherein determining whether a morphing condition is met includes comparing acquired sensor data about the body to a morphing condition threshold.

12. The system of claim 6 , further including an input interface operatively connected to the one or more processors, and wherein determining whether a morphing condition is met includes receiving a user input on the input interface indicative of morphing the body.

13. The system of claim 6 , wherein the shape memory material member is a first shape memory material member, and further including a second shape memory material member extending along the surface, the second shape memory material member including a first region and a second region, the second shape memory material member including a central region located between the first region and the second region, the second shape memory material member being constrained on the surface in the first region and in the second region by stitches, the second shape memory material member being unconstrained on the surface in the central region.

14. A method of morphing a body, the body including a surface, a shape memory material member extending along the surface, the shape memory material member including a first region and a second region, the shape memory material member including a central region located between the first region and the second region, the first region and in the second region of the shape memory material member being constrained the surface by stitches, the central region of the shape memory material member being unconstrained on the surface, the method comprising:
determining, using one or more processors, whether a morphing condition is met; and
responsive to determining that the morphing condition is met, causing, using one or more processors, electrical energy to be supplied to the shape memory material member such that the shape memory material member contracts and causes the body to bend in the central region, whereby the body is morphed into an activated configuration.

15. The method of claim 14 , wherein determining whether a morphing condition is met includes comparing sensor data about an external environment of the body to a morphing condition threshold.

16. The method of claim 14 , wherein determining whether a morphing condition is met includes comparing sensor data about the body to a morphing condition threshold.

17. The method of claim 14 , wherein determining whether a morphing condition is met includes determining whether a user input provided on a user input interface is an input indicative of morphing the body.

18. The method of claim 14 , wherein the shape memory material member is a shape memory alloy wire.

19. The method of claim 14 , further including:
detecting a morphing deactivation condition; and
responsive to detecting the morphing deactivation condition, causing the supply of electrical energy to the shape memory material member to be discontinued, whereby the shape memory material member substantially returns to a non-activated configuration.

Assignees

• Toyota Eng & Mfg North America

Inventors

• Tsuruta Ryohei
• Nam Taewoo
• Smith Eric
• Gandhi Umesh N
• Bumgardner Deborah

Classifications

• F03G7/06143 Primary

  Wires · CPC title

• B64C3/38 Primary

  Adjustment of complete wings or parts thereof · CPC title

• B64C2003/543

  by changing shape according to the speed, e.g. by morphing · CPC title

• F03G7/065

  using a shape memory element · CPC title