CN215804981U - Memory alloy corner driver - Google Patents
Memory alloy corner driver Download PDFInfo
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- CN215804981U CN215804981U CN202121959844.0U CN202121959844U CN215804981U CN 215804981 U CN215804981 U CN 215804981U CN 202121959844 U CN202121959844 U CN 202121959844U CN 215804981 U CN215804981 U CN 215804981U
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Abstract
The utility model relates to the technical field of drivers and discloses a memory alloy corner driver which comprises a memory alloy sheet, a heating device and a memory alloy wire, wherein the memory alloy wire is arranged on the bent outer side surface of the memory alloy sheet, the memory alloy wire and two ends of the memory alloy sheet are fixed, and the memory alloy wire is provided with a connector connected with a power supply; the heating device is fixed on the memory alloy sheet. The utility model has simple structure and convenient use, and can realize bidirectional repeated control of the rotation angle of the memory alloy corner driver.
Description
Technical Field
The utility model relates to the technical field of drivers, in particular to a memory alloy corner driver.
Background
At present, a plurality of devices can realize the function of controlling a structure to rotate and bend a certain angle, such as a motor, an angle electromagnet, a push-pull electromagnet, a memory alloy angle driver and the like. The memory alloy corner driver is a component made of a memory alloy material, the rotation and bending of the structure are controlled by utilizing the characteristics of the memory alloy material, the memory alloy corner driver is widely applied due to the simple integral structure, and the memory alloy corner driver is applied to the fields of aerospace, robots and the like. Memory alloy angular actuators come in many types, for example, tubular memory alloy wire in combination with a spring structure, memory alloy springs, memory alloy bi-metallic strips, and the like. However, the conventional memory alloy angle actuator cannot realize bidirectional repetitive control of the rotation angle and cannot maintain the structure at a set angle position, so that the use range of the memory alloy angle actuator is limited.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a memory alloy angular actuator, which solves the problems that the conventional memory alloy angular actuator cannot perform bidirectional repetitive control of the rotation angle and cannot maintain the structure at the set angular position.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the memory alloy corner driver comprises a memory alloy sheet, a heating device and a memory alloy wire, wherein the memory alloy wire is arranged on the bent outer side surface of the memory alloy sheet, the memory alloy wire and the two ends of the memory alloy sheet are fixed, and the memory alloy wire is provided with a connector connected with a power supply; the heating device is fixed on the memory alloy sheet.
Preferably, the heating device is fixed on the curved inner side surface of the memory alloy sheet.
Preferably, the phase transition temperature of the memory alloy wire is greater than that of the memory alloy sheet.
Preferably, the memory alloy corner driver further comprises an isolation layer, and the isolation layer is arranged between the memory alloy wire and the heating device and/or between the memory alloy wire and the memory alloy sheet.
Preferably, the isolation layer wraps the periphery of the memory alloy wire.
Preferably, the isolation layer is made of rubber.
Preferably, the heating device is fixed in the middle of the memory alloy sheet.
Preferably, the heating device is one of a resistance wire, an electrothermal film and a semiconductor heating plate.
Preferably, two ends of the memory alloy sheet are respectively provided with a fixed block, and the memory alloy wire is fixed with the fixed blocks.
Preferably, the memory alloy wire is arranged in a U-shape on the memory alloy sheet.
Compared with the prior art, the memory alloy corner driver provided by the embodiment of the utility model has the beneficial effects that:
the memory alloy corner driver provided by the embodiment of the utility model heats the memory alloy sheet through the heating device, so that the memory alloy sheet is heated, bent and rotated to generate plastic deformation, the memory alloy wire is in a low-temperature state and cannot be deformed due to heat conduction, and the memory alloy wire is passively stretched and bent under the bending action of the memory alloy sheet. Because the memory alloy sheet is heated to generate plastic deformation, the memory alloy sheet can be kept at the set corner position after the memory alloy sheet is stopped being heated, and correspondingly, the whole memory alloy corner driver is kept at the set corner position. When the memory alloy corner driver needs to be restored to the original position, the power supply is switched on, the memory alloy wire is electrified and heated, the memory alloy wire in the stretching state is heated and then is tensioned and shrunk, and the memory alloy sheet is passively shrunk under the action of the shrinking force of the memory alloy wire, so that the memory alloy corner driver can be integrally restored to the original angle position, and the bidirectional repeated control of the rotation angle of the memory alloy corner driver is realized. In addition, the utility model has simple structure and convenient use.
Drawings
FIG. 1 is a diagram illustrating an original state of a memory alloy angular actuator according to an embodiment of the present invention;
FIG. 2 is a schematic view of a bending state of a memory alloy corner driver according to an embodiment of the utility model;
in the figure, 1, a memory alloy sheet; 11. a fixed block; 2. a heating device; 3. and memorizing the alloy wires.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
The memory alloy corner driver can realize bidirectional repeated control of the driver between two rotation angle positions. It should be noted that the memory alloy rotation angle driver shown in fig. 1 is in a horizontal state, and is merely an exemplary illustration of an original state. The memory alloy corner driver can be in a horizontal state or a bending state in an original state. When the original state of the memory alloy corner driver is in the bent state, the bent angle in the original state is different from the bent state shown in fig. 2.
As shown in fig. 1 and 2, the memory alloy corner driver according to the embodiment of the utility model includes a memory alloy sheet 1, a heating device 2 and a memory alloy wire 3, wherein the memory alloy wire 3 is arranged on the surface of the memory alloy sheet 1 and on the outer curved surface of the memory alloy sheet 1, and the memory alloy wire 3 and both ends of the memory alloy sheet 1 are fixed, so that the memory alloy wire 3 can be synchronously curved along with the curvature of the memory alloy sheet 1. Moreover, because the memory alloy wire 3 is arranged on the curved outer side surface of the memory alloy sheet 1 instead of the curved inner side surface, the memory alloy wire 3 can be prevented from being bent asynchronously to form an arch shape with the memory alloy sheet 1 when the memory alloy sheet 1 is bent. The memory alloy wire 3 is provided with a connector connected with a power supply, so that the memory alloy wire 3 is electrified and heated by the power supply, and the memory alloy wire 3 is heated and deformed; the heating device 2 is fixed on the memory alloy sheet 1, so that the memory alloy sheet 1 is heated by the heating device 2, and the memory alloy sheet 1 is heated, bent and deformed.
In the present invention, the memory alloy wire 3 and the memory alloy sheet 1 are made of a memory alloy material. The memory alloy sheet 1 and the memory alloy wire 3 are heated in different ways, so that the rotation angle of the driver can be controlled in two ways. The bending angle of the memory alloy angle driver in the original state in fig. 1 is recorded as a first set angle, and the bending angle of the memory alloy angle driver in the bending state in fig. 2 is recorded as a second set angle. When the memory alloy corner driver rotates from a first set angle to a second set angle, the memory alloy sheet 1 is heated by the heating device 2, so that the memory alloy sheet 1 is heated and bent to deform, at the moment, the memory alloy wire 3 is not electrified, and the memory alloy wire 3 is not heated or heated but does not reach the phase transition temperature, so that when the memory alloy sheet 1 is heated and deformed, the memory alloy wire 3 is not actively deformed, but is passively stretched under the driving of the memory alloy sheet 1 until the driver bends to the second set angle, and the heating of the memory alloy sheet 1 is stopped. Because the memory alloy sheet 1 is heated to generate plastic deformation, even if the heating is stopped, the memory alloy sheet 1 does not actively return to the original state, but is kept in the second set angle state; when the memory alloy corner driver is required to be recovered to the first set angle from the second set angle, the memory alloy wire 3 is electrified and heated, the memory alloy wire 3 is tensioned and contracted after being heated, the memory alloy sheet 1 is driven to contract until the driver is recovered to the first set angle, the electrification and the heating of the memory alloy wire 3 are stopped, the memory alloy wire 3 is not heated and contracted any more, the driver is kept in the first set angle state, and therefore the bidirectional control over the driver is achieved.
In the present invention, the memory alloy sheet 1 has a certain strength and can be controlled to rotate together with the load.
In the utility model, a heating device 2 is fixed on a memory alloy sheet 1 for heating the memory alloy sheet 1. The heating device 2 can be fixed on the curved outer side surface of the memory alloy sheet 1, can also be fixed on the curved inner side surface of the memory alloy sheet 1, and can also be wound on the memory alloy sheet 1. Preferably, the heating device 2 is fixed on the curved inner side surface of the memory alloy sheet 1, and the heating device 2 and the memory alloy wire 3 are positioned on different sides of the memory alloy sheet 1, so as to reduce the heating degree of the memory alloy wire 3 by the heating device 2. When the heating device 2 and the memory alloy wire 3 are both positioned on the curved outer side surface of the memory alloy sheet 1, the heating device 2 is positioned between the memory alloy sheet 1 and the memory alloy wire 3, the heating device 2 is fixed on the surface of the memory alloy wire 3, and the memory alloy wire 3 is fixed with two ends of the memory alloy sheet 1.
Preferably, the heating device 2 is fixed in the middle of the memory alloy sheet 1 so that both ends of the memory alloy sheet 1 are bent.
In the embodiment, the heating device 2 is one of a resistance wire, an electrothermal film and a semiconductor heating sheet, wherein the resistance wire can be wound on the memory alloy sheet 1 or attached to the surface of the memory alloy sheet 1; the electrothermal film and the semiconductor heating plate are both in a sheet shape and can be attached to the surface of the memory alloy sheet 1. The resistance wire, the electrothermal film and the semiconductor heating plate can be connected in an adhesive way. Further, the heating device 2 is rectangular, for example, the resistance wire may be arranged in a rectangle on the surface of the memory alloy sheet 1; the sections of the electrothermal film and the semiconductor heating plate can be rectangular. When the memory alloy sheet 1 is rectangular, the central axis of the rectangular memory alloy sheet 1 in the length direction is coaxial with the central axis of the rectangular heating device 2 in the length direction, and the central axis of the rectangular memory alloy sheet 1 in the width direction is coaxial with the central axis of the rectangular heating device 2 in the width direction.
Preferably, the phase transition temperature of the memory alloy wire 3 is greater than the phase transition temperature of the memory alloy sheet 1. When the memory alloy sheet 1 is heated by the heating device 2, even if heat conduction exists between the memory alloy wire 3 and the memory alloy sheet 1 or the heating device 2 is positioned between the memory alloy wire 3 and the memory alloy sheet 1, the memory alloy wire 3 is heated, because the phase transition temperature of the memory alloy sheet 1 is low, the phase transition temperature of the memory alloy wire 3 is high, the memory alloy sheet 1 is heated and bent to deform when reaching the phase transition temperature in advance, at the moment, the memory alloy wire 3 does not reach the phase transition temperature, and can not be actively bent to deform, but is passively stretched to deform under the driving of the memory alloy sheet 1.
In this embodiment, the memory alloy corner driver further includes an isolation layer, and the isolation layer is disposed between the memory alloy wire 3 and the heating device 2 and/or between the memory alloy wire 3 and the memory alloy sheet 1. When the heating device 2 and the memory alloy wire 3 are positioned on different sides of the memory alloy sheet 1, the isolation layer is arranged between the memory alloy wire 3 and the memory alloy sheet 1; when the heating device 2 and the memory alloy wire 3 are located on the same side of the memory alloy sheet 1, an isolation layer may be only disposed between the memory alloy wire 3 and the heating device 2, and if the heating device 2 does not cover the surface of the memory alloy sheet 1, an isolation layer may be disposed between the memory alloy wire 3 and the heating device 2, and an isolation layer may be disposed between the memory alloy wire 3 and the memory alloy sheet 1. It should be noted that if the heating device 2 covers the surface of the memory alloy wire 3, only a separation layer is provided between the memory alloy wire 3 and the heating device 2.
In this embodiment, the isolation layer can insulate heat, so as to prevent the memory alloy wire 3 from being affected when the memory alloy sheet 1 is heated by the heating device 2, and prevent heat conduction between the memory alloy sheet 1 and the memory alloy wire 3, so that when the memory alloy sheet 1 is heated and bent, the memory alloy wire 3 can be kept in a low-temperature state without being heated, and is passively stretched under the driving action of the memory alloy sheet 1; the isolation layer can also be insulated so as to avoid influencing the memory alloy sheet 1 when the memory alloy wire 3 is electrified and heated and avoid the electric conduction between the memory alloy sheet 1 and the memory alloy wire 3. Preferably, the isolation layer is made of rubber. The heating states of the memory alloy sheet 1 and the memory alloy wire 3 are not affected by each other through the arranged isolation layer, so that the phase transition temperature of the memory alloy sheet 1 and the phase transition temperature of the memory alloy wire 3 are controlled respectively, the phase transition temperatures of the memory alloy sheet 1 and the memory alloy wire 3 are not greatly different, the memory alloy sheet and the memory alloy wire can be heated and deformed at normal temperature, and the energy consumption is reduced.
Preferably, the isolating layer is wrapped on the periphery of the memory alloy wire 3 to isolate the memory alloy wire 3 from direct contact with the memory alloy sheet 1 and the heating device 2, and isolate heat conduction and electricity conduction.
In this embodiment, two ends of the memory alloy sheet 1 are respectively provided with a fixing block 11, the memory alloy wire 3 is fixed to the fixing blocks 11, and the memory alloy wire 3 is fixed to the surface of the fixing blocks 11 and can be bonded and fixed.
In this embodiment, the memory alloy wire 3 is arranged in a U shape on the memory alloy sheet 1, the bottom of the U shape is located on one of the fixing blocks 11, the positions of the memory alloy wire 3 near the two ends are fixed on the other fixing block 11, and the two ends of the memory alloy wire 3 are used for connecting a lead and a power supply. By arranging the memory alloy wire 3 in a U-shape, it is convenient to energize the memory alloy wire 3 wiring.
In this embodiment, the memory alloy sheet 1 is rectangular, and the length direction of the memory alloy wire 3 is parallel to the length direction of the memory alloy sheet 1. When the memory alloy wire 3 is U-shaped, the U-shaped memory alloy wire 3 is symmetrically arranged relative to the central axis of the memory alloy sheet 1 in the width direction.
The working process of the utility model is as follows:
when the memory alloy corner driver needs to be bent by a certain angle from the original state, the memory alloy sheet 1 is heated by the heating device 2, and the memory alloy sheet 1 is heated, bent and rotated; at this time, the memory alloy wire 3 does not reach the phase transition temperature, or under the action of the isolation layer, the memory alloy wire 3 is not heated and is in a low-temperature state, so that the memory alloy wire 3 cannot be actively bent and deformed. Because the memory alloy wire 3 is arranged on the bent outer side surface of the memory alloy sheet 1 and is fixed with the two ends of the memory alloy sheet 1, the memory alloy wire 3 can be passively stretched under the driving of the memory alloy sheet 1, and the memory alloy corner driver is integrally bent at a certain angle. When the memory alloy corner driver rotates and bends to a set angle, the heating of the memory alloy sheet 1 is stopped, the memory alloy sheet 1 does not continue to bend, and the memory alloy sheet 1 does not automatically return to the original state due to the plastic deformation of the memory alloy sheet 1, so that the memory alloy sheet 1 is kept at the position of the bending angle, and the memory alloy corner driver as a whole can be kept at the position of the set bending angle.
When the memory alloy corner driver needs to be restored to the original state from the bending state, the memory alloy wire 3 is electrified and heated by the power supply, and the memory alloy wire 3 is heated, tensioned and deformed; the memory alloy sheet 1 is driven by the memory alloy wire 3 to contract, so that the memory alloy corner driver is integrally restored to the original state. When the memory alloy corner driver is integrally restored to the original state, the energization heating of the memory alloy wire 3 is stopped, so that the memory alloy wire 3 is not heated to deform, and the memory alloy corner driver is kept in the original state, thereby realizing the bidirectional repeated control of the memory alloy corner driver on the rotating bending angle.
In summary, the embodiment of the present invention provides a memory alloy corner driver, which heats a memory alloy sheet 1 through a heating device 2, so that the memory alloy sheet 1 is heated, bent and rotated to generate plastic deformation, a memory alloy wire 3 is in a low temperature state, and cannot be deformed due to heat conduction, and the memory alloy wire 3 is passively stretched and bent under the bending action of the memory alloy sheet 1. Because the memory alloy sheet 1 is subjected to plastic deformation when heated, the memory alloy sheet 1 can be kept at the set corner position after the memory alloy sheet 1 is stopped being heated, and accordingly, the whole memory alloy corner driver is kept at the set corner position. When the memory alloy corner driver is required to be restored to the original position, the power supply is switched on, the memory alloy wire 3 is electrified and heated, the memory alloy wire 3 in the stretching state is tensioned and contracted after being heated, and the memory alloy sheet 1 is passively contracted under the action of the contraction force of the memory alloy wire 3, so that the whole memory alloy corner driver can be restored to the original angle position, and the bidirectional repeated control of the rotation angle of the memory alloy corner driver is realized. In addition, the utility model has simple structure and convenient use.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A memory alloy corner driver is characterized by comprising a memory alloy sheet, a heating device and a memory alloy wire, wherein the memory alloy wire is arranged on the bent outer side surface of the memory alloy sheet, the memory alloy wire and the two ends of the memory alloy sheet are fixed, and the memory alloy wire is provided with a connector connected with a power supply; the heating device is fixed on the memory alloy sheet.
2. The memory alloy corner driver of claim 1, wherein the heating device is secured to a curved inner side of the memory alloy sheet.
3. The memory alloy corner driver according to claim 1, wherein the phase transition temperature of the memory alloy wire is greater than the phase transition temperature of the memory alloy sheet.
4. The memory alloy corner driver of claim 1, further comprising an isolation layer disposed between the memory alloy wire and the heating device and/or between the memory alloy wire and the memory alloy sheet.
5. The memory alloy corner driver of claim 4, wherein the isolation layer wraps around the circumference of the memory alloy wire.
6. The memory alloy corner driver of claim 4, wherein the isolation layer is made of rubber.
7. The memory alloy corner driver according to claim 1, wherein the heating device is fixed to a middle portion of the memory alloy sheet.
8. The memory alloy corner driver of claim 1, wherein the heating device is one of a resistance wire, an electrothermal film and a semiconductor heating plate.
9. The memory alloy corner driver according to claim 1, wherein two fixing blocks are respectively disposed at two ends of the memory alloy sheet, and the memory alloy wire is fixed to the fixing blocks.
10. The memory alloy angle driver of claim 1, wherein the memory alloy wires are arranged in a U-shape on the memory alloy sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121959844.0U CN215804981U (en) | 2021-08-19 | 2021-08-19 | Memory alloy corner driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121959844.0U CN215804981U (en) | 2021-08-19 | 2021-08-19 | Memory alloy corner driver |
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| CN215804981U true CN215804981U (en) | 2022-02-11 |
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| CN202121959844.0U Active CN215804981U (en) | 2021-08-19 | 2021-08-19 | Memory alloy corner driver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114597840A (en) * | 2022-03-24 | 2022-06-07 | 国网江苏省电力有限公司泰州供电分公司 | Device for preventing bird nesting of power distribution equipment |
| CN114888533A (en) * | 2022-06-10 | 2022-08-12 | 清华大学 | Preparation method of shape memory alloy soft driver with temperature self-sensing function |
-
2021
- 2021-08-19 CN CN202121959844.0U patent/CN215804981U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114597840A (en) * | 2022-03-24 | 2022-06-07 | 国网江苏省电力有限公司泰州供电分公司 | Device for preventing bird nesting of power distribution equipment |
| CN114597840B (en) * | 2022-03-24 | 2024-02-20 | 国网江苏省电力有限公司泰州供电分公司 | Device for preventing bird nesting of power distribution equipment |
| CN114888533A (en) * | 2022-06-10 | 2022-08-12 | 清华大学 | Preparation method of shape memory alloy soft driver with temperature self-sensing function |
| CN114888533B (en) * | 2022-06-10 | 2023-02-28 | 清华大学 | Preparation method of shape memory alloy soft driver with temperature self-sensing function |
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