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KR-20260063551-A - NET-TYPE ACTUATOR AND DRIVING DEVUCE INCLUDING THE SAME

KR20260063551AKR 20260063551 AKR20260063551 AKR 20260063551AKR-20260063551-A

Abstract

The present invention relates to a mesh-type actuator and a driving device including the same, comprising a first-1 wire arranged in a first direction that includes a shape memory alloy, a first-2 wire arranged in a first direction that intersects the first-1 wire and includes a shape memory alloy, and a second wire arranged in a second direction that intersects the first-1 wire and the first-2 wire and includes spandex.

Inventors

  • 최혁렬
  • 서현웅
  • 신동수
  • 김기현
  • 박재형
  • 공영진
  • 윤지민

Assignees

  • 성균관대학교산학협력단

Dates

Publication Date
20260507
Application Date
20241030

Claims (10)

  1. A first-1 wire comprising a shape memory alloy and arranged in a first direction; A first-2 wire that intersects the first-1 wire, includes a shape memory alloy, and is arranged in a first direction; and A net-type actuator characterized by including a second wire arranged in a second direction, comprising spandex, and interlacing the first-1 wire and the first-2 wire.
  2. In paragraph 1, A net-type actuator characterized in that the above-mentioned first-1 wire, the above-mentioned first-2 wire, and the above-mentioned second wire are configured to be capable of contracting or expanding in a first direction or a second direction.
  3. In paragraph 1, A mesh-type actuator characterized in that the above-mentioned first-1 wire and the above-mentioned first-2 wire are formed by repeating a plurality of loop shapes.
  4. In paragraph 3, The above-mentioned first-1 wire and the above-mentioned first-2 wire are A loop upper portion positioned at the upper part of the above loop; A loop side portion extending in both directions from the upper part of the loop and positioned in the middle portion of the loop; and A net-type actuator characterized by including: a loop bottom portion that extends from the loop side portion, is positioned at the lower portion of the loop, and is connected to the upper portion of the loop of an adjacent loop.
  5. In paragraph 4, A net-type actuator characterized in that the above-mentioned first-1 wire and the above-mentioned first-2 wire have the loops arranged opposite each other.
  6. In paragraph 3, The above second wire is A net-type actuator characterized by alternately passing through the upper and lower parts of the first-1 wire and the first-2 wire and weaving the first-1 wire and the first-2 wire in a second direction.
  7. A mesh-type actuator comprising a plurality of wires, each wire comprising a shape memory alloy and arranged in a first direction, a first-1 wire that intersects the first-1 wire and comprises a shape memory alloy and arranged in a first direction, and a second wire that intersects the first-1 wire and the first-2 wire, comprises spandex, and arranged in a second direction; A fixed part to which both ends of the above-mentioned mesh-type actuator are fixed; and A driving device comprising a mesh-type actuator characterized by including a power source that generates heat by applying power to the above-mentioned first-1 wire and the above-mentioned first-2 wire.
  8. In Paragraph 7, The above-mentioned first-1 wire and the above-mentioned first-2 wire are A driving device comprising a mesh-type actuator characterized by contracting in a second direction when heat is applied by electric power, and restoring when the heat is removed.
  9. In paragraph 8, The above-mentioned mesh-type actuator is provided in multiple units, and A driving device comprising a mesh-type actuator characterized by having a displacement measuring sensor that detects the second direction displacement of the first-1 wire and the first-2 wire between adjacent mesh-type actuators.
  10. In Paragraph 9, The above mesh-type actuator A driving device comprising a mesh-type actuator characterized by further including a temperature sensor that measures a temperature change caused by heat applied from the above power source.

Description

Net-type actuator and driving device including the same The present invention relates to a mesh-type actuator and a driving device including the same, and more specifically, to a mesh-type actuator that improves strain using a shape memory alloy and a driving device including the same. Generally, shape memory alloys (SMAs) deform at a specific temperature and then return to their original shape as they return to the original temperature. Shape memory alloys can remember their shape, and deformed metals can be restored to their original form in response to specific temperature changes. Since shape memory alloys can be deformed and restored multiple times and operate solely through temperature changes, they can replace complex actuators. Shape memory alloys can be easily deformed by external force in the low-temperature martensite phase and can maintain and restore their original shape in the high-temperature austenite phase. Shape memory alloys that can be used include nickel-titanium alloys (Ni-Ti, Nitinol), copper-zinc-aluminum alloys (Cu-Zn-Al), and copper-aluminum-nickel alloys (Cu-Al-Ni). Actuators or drive devices utilizing such shape memory alloys possess superior characteristics compared to other actuators (piezoelectric elements, electrostatic actuators, electromagnetic actuators, etc.) in terms of generated force and energy density. However, drive devices using shape memory alloys have the disadvantage of being highly dependent on temperature and exhibiting very slow actuation speeds due to their low elasticity. Furthermore, adding a pump or refrigerant tank to increase actuation speed increases weight, which negates the advantages of simple and lightweight drive devices utilizing shape memory alloys. Meanwhile, the background technology of the present invention is disclosed in Korean Published Patent Application No. 10-2023-0172947 (Registered Dec. 26, 2023; Title of Invention: Actuator with Increased Linear Driving Length through Increased Linear Displacement of Shape Memory Alloy Wire). FIG. 1 is a drawing showing a mesh-type actuator according to one embodiment of the present invention. FIG. 2 is a drawing showing the loop of a net-type actuator according to one embodiment of the present invention. FIG. 3 is a diagram showing the arrangement of the first-1 wire, the first-2 wire, and the second wire of a net-type actuator according to one embodiment of the present invention. FIG. 4 is a drawing of a driving device including a mesh-type actuator according to one embodiment of the present invention. FIG. 5 is a diagram showing a stacked arrangement of a driving device including a mesh-type actuator according to one embodiment of the present invention. FIG. 6 is a diagram showing a planar arrangement of a driving device including a mesh-type actuator according to one embodiment of the present invention. FIG. 7 is a drawing of the torsion of a driving device including a net-type actuator according to one embodiment of the present invention. FIG. 8 is a drawing of the first direction extension of a driving device including a net-type actuator according to one embodiment of the present invention. FIG. 9 is a drawing of the second direction extension of a driving device including a net-type actuator according to one embodiment of the present invention. FIG. 10 is a drawing of the extension of a driving device including a net-type actuator according to another embodiment of the present invention. Hereinafter, an embodiment of a mesh-type actuator and a driving device including the same according to the present invention will be described with reference to the contents described in the attached drawings. However, the present invention is not limited or restricted by exemplary embodiments. In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for convenience. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or conventions of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification. Furthermore, in this specification, when a part is described as being “connected (or joined)” to another part, this includes not only cases where they are “directly connected (or joined)” but also cases where they are “indirectly connected (or joined)” with other members interposed between them. In this specification, when a part is described as “comprising (or having) a certain component,” this means that, unless specifically stated otherwise, it does not exclude other components but may additionally “comprising (or having)” other components. The purpose and effects of the present invention may be naturally understood or become clearer through the following description, and the purpose and effects of the present invention are not limited solely to the description below. Furthermore, in describing the pr