JP2005076558A - Shape memory alloy heat engine and vehicle using shape memory alloy heat engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a revolutionary shape memory alloy heat engine and shape memory alloy that can increase driving force with a simple structure while paying attention to riding, and that does not require a large heating device for heating a small pulley. A vehicle using a heat engine.
A plurality of large pulleys 1 are arranged via small pulleys 2, and an endless shape memory alloy wire 3 is placed between the large pulleys 1 and 2 to heat the small pulleys 2 to heat all pulleys. Shape memory alloy heat engine configured to rotate 1 and 2.
[Selection] Figure 1

Description

  The present invention relates to a shape memory alloy heat engine capable of rotating a plurality of large pulleys by using a shape memory alloy wire and heating a small pulley.

  As a moving device, a device in which a shape memory alloy wire is installed between a pair of large and small pulleys and the small and large pulleys are rotated by heating the small pulleys to move the device main body has been proposed.

Japanese Patent Application No. 2002-32668

  However, the moving device is not touched on a configuration relating to an increase in driving force (pulling rotational force). In other words, there is currently no shape memory alloy heat engine applied to passengers.

  The present invention pays attention to riding, can increase the driving force with a simple configuration, and yet the ground-breaking shape memory alloy heat engine and shape memory in which the heating device for heating the small pulley is not large An object is to provide a vehicle using an alloy heat engine.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A plurality of large pulleys 1 are arranged via the small pulleys 2, endless shape memory alloy wires 3 are installed between the large pulleys 1 and the small pulleys 2, and the small pulleys 2 are heated. The present invention relates to a shape memory alloy heat engine that is configured to rotate 2.

  In addition, two large pulleys 1 are arranged via one small pulley 2, and endless shape memory alloy wires 3 are installed between the two large pulleys 1 and one small pulley 2, respectively. By heating the small pulley 2, the amount of deformation of the shape memory alloy wire 3 deformed along the circumference of the small diameter small pulley 2 is large, and therefore the recovery amount of the shape memory alloy wire 3 by the heating is large. The driving force is increased by increasing the size, and two large pulleys 1 are arranged on the small pulley 2 via the shape memory alloy wire 3 to heat the one small pulley 2. Thus, the present invention relates to a shape memory alloy heat engine characterized in that the rotational force of the two large pulleys 1 can be obtained.

  The shape memory according to any one of claims 1 and 2, wherein the heating of the small pulley 2 is performed by heating predetermined portions on both the left and right sides through the central portion of the small pulley 2. It relates to an alloy heat engine.

  The shape memory alloy heat engine according to any one of claims 1 to 3, wherein a plurality of the shape memory alloy wires 3 are installed between the large pulley 1 and the small pulley 2. is there.

  5. The shape memory alloy heat engine according to claim 1, wherein a wheel 4 is provided on the large pulley 1.

  In addition, the present invention relates to a vehicle using the shape memory alloy heat engine according to any one of claims 1 to 5.

  Since the present invention is configured as described above, attention is paid to riding, and the driving force can be increased with a simple configuration, and yet a revolutionary shape that does not require a heating device for heating the small pulley. The vehicle uses a memory alloy heat engine and a shape memory alloy heat engine.

  That is, for example, two large pulleys are arranged via one small pulley, a shape memory alloy wire is installed between the large pulley and the small pulley, and the small pulley is subjected to predetermined heating means such as high-temperature steam. When heated, on the small pulley side, the diameter is small, so the amount of deformation of the wire deformed along this circumference is large, and this increases the amount of recovery due to the heating, thereby increasing the driving force. In addition, since the two large pulleys are connected to the small pulley via the shape memory alloy wire, the two large pulleys can be driven (rotated) simply by heating one small pulley. Accordingly, it is possible to obtain the same driving force as when two pairs of large and small pulleys (four pulleys in total) are provided.

  Further, in the invention described in claim 3, since a plurality of portions of the shape memory alloy wire can be deformed by heating, an epoch-making shape memory alloy heat engine capable of obtaining a larger torque is obtained.

  In the invention according to claim 4, it is an epoch-making shape memory alloy heat engine that can transmit the rotational force of the small pulley to the large pulley better and obtain a better driving force.

  The invention according to claim 5 is an epoch-making shape memory alloy heat engine capable of moving the large pulley and the small pulley in a predetermined direction by heating the small pulley and rotating the large pulley. .

  In the invention according to claim 6, the vehicle uses a shape memory alloy heat engine that can be moved by an excellent driving force.

  Embodiments of the present invention that are considered to be suitable (how to best carry out the invention) will be briefly described with reference to the drawings, showing their effects.

  A heat engine that rotates an endless shape memory alloy wire 3 between large and small pulleys 1 and 2 and heats the small pulley 2 to rotate the large and small pulleys 1 and 2. The heat engine that increases the number of large pulleys 1 to increase the rotational force (torque) and arranges the small pulleys 2 between the large pulleys 1 to serve as a pair. The engine can produce the same rotational force (torque).

  That is, for example, when two large pulleys 1 are arranged via one small pulley 2 and the small pulley 2 is heated by heating means such as high-temperature steam, the small pulley 2 has a small diameter. The amount of deformation of the shape memory alloy wire 3 that is deformed along the circumference increases.

  As a result, the amount of recovery by heating the shape memory alloy wire 3 is increased, so that a driving force is applied to the large pulley 1.

  At this time, since the two large pulleys 1 are installed on the small pulley 2 by the shape memory alloy wire 3, the two large pulleys 1 are rotated by the rotation of the small pulley 2. , Two pairs of large and small pulleys 1 and 2, that is, the same rotational force (torque) as in the case of providing a total of four pulleys, a total of three pulleys 1 of the two large pulleys 1 and the one small pulley 2, It can be demonstrated by 2.

  Therefore, the present invention provides an epoch-making shape memory alloy heat engine that can increase the driving force with a simple configuration and that does not require a large heating device for heating the small pulley 2.

  For example, as shown in FIGS. 1 to 4, when a small pulley 2 of a vehicle in which a wheel 4 is provided on the large pulley 1 is heated from both sides of the horizontal, the three large and small pulleys 1 and 2 are either left or right. At the same time, the vehicle rotates in the same direction, and the vehicle then maintains that direction. When one large pulley 1 serving as a front wheel rides on an obstacle or is artificially stopped and pushed back slightly, it rotates in the reverse direction, and the vehicle continues to move in the reverse direction. Therefore, for example, if two rod-like obstacles are arranged at a certain distance, the vehicle will continue to perform automatic reciprocation between them indefinitely. In FIG. 1, arrows (reference numeral 10) pointing to the left and right sides of the small pulley 1 indicate the heating position.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, a four-wheeled vehicle is manufactured using the shape memory alloy wire 3.

  Fig. 1 shows an example of a prototype.

  In this embodiment, as shown in FIGS. 1 to 3, one small pulley 2 is arranged at a substantially central portion between two large pulleys 1 provided at a predetermined interval, and the two large pulleys 1 are arranged. A plurality of shape memory alloy wires 3 are installed on each of the small pulley 2 and the wheel 4 is provided on the large pulley 1 to constitute a vehicle.

  Specifically, the wire 3 memorized linearly is adopted as the shape memory alloy wire 3.

  In the present embodiment, two large wheels 1 with handrails for wheelchairs are combined to provide a drum-type large pulley 1 having wheels 4.

  By providing the large pulley 1 in a drum shape, stable running as a vehicle can be obtained, and a plurality of shape memory alloy wires 3 are arranged (winded) between the large pulley 1 and the small pulley 2 in a well-balanced manner. can do.

  The small pulley 2 and the shape memory alloy wire 3 are heated by the heating device 9 provided in the vehicle, and the large and small pulleys 1 and 2 are driven by the recovery action of the shape memory alloy wire 3 deformed by heating. It is said.

  The small pulley 2 is heated using high-temperature steam generated by normal water boiling.

  That is, the heating device 9 is composed of a portable gas stove 6, a flask 5 for containing water, and a nozzle 7 protruding from the flask 5.

  Specifically, the high-temperature steam is obtained by introducing the high-temperature steam generated in the flask 5 placed on the portable gas stove 6 below the vehicle body 8 and placed on the portable gas stove 6 to the two nozzles 7 projecting from the flask 5. The nozzle 7 is pushed right next to the small pulley 2.

  The reason why the high temperature steam is blown right beside the small pulley 2 is that when the high temperature steam is blown right beside the small pulley 2, the torque of the large pulley 1 becomes the largest.

  In this embodiment, the high temperature steam is obtained by heating the flask 5 containing water by the portable gas stove 6. However, the small pulley 2 and the shape memory alloy 5 can be heated and the large and small pulleys 1 and 2 can be driven. As long as it has a configuration, it may be adopted as appropriate. For example, a configuration in which a gas other than water vapor at a high temperature is blown onto the small pulley 2 and the shape memory alloy wire 3 may be adopted. In the present embodiment, the portable gas stove 6 is adopted as a heating source. However, it may be appropriately adopted as long as water can be heated to form water vapor. For example, an electric heater that generates heat by energization may be adopted. good.

  The life of the wire 3 is extremely long, and there is no abnormality even if it rotates for half a day. The wire 3 is connected in a loop shape by connecting the wire 3 from the left and right to a stainless steel joint (used for connecting a fishing hook and line) having a length of 5 mm and an array of two holes having an inner diameter of 1 mm. Both ends are fixed and can be easily replaced and repaired even if cut.

  Therefore, in the present embodiment, it is possible to rotate the two large pulleys 1 only by heating one small pulley 2, thereby two pairs of large and small pulleys 1 and 2 (that is, a total of four pulleys). The torque equivalent to the rotational force (torque) obtained from (3) can be obtained with a total of three pulleys.

  Moreover, since only one small pulley 2 is heated, it can be said that the heating device can be made compact as compared with the case where two pairs of large and small pulleys 1 and 2 are provided.

  Therefore, this example uses an epoch-making shape memory alloy heat engine capable of making the heating device as a power source compact while having a configuration capable of obtaining excellent rotational force. Become a vehicle.

  FIG. 1 shows a basic mechanism of how the vehicle of this embodiment generates a driving force. Whether the initial direction of rotation is right or left is by chance or deliberately turning by hand.

  FIG. 2 shows the structure of the present embodiment from a plane.

  FIG. 3 shows the structure of this embodiment from the side.

  FIG. 4 shows a heating device 9 for heating the small pulley 2 of this embodiment.

  Reference numeral 10 in the figure indicates a heating position.

  The specifications of the prototype are shown below.

Shape memory alloy wire: NiTi commercial product, diameter 1.0mm
Small pulley: Aluminum, 70mm diameter
Large pulley: Wheeled plastic wheeled wheel, 520mm in diameter,
4 used

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

It is schematic structure explanatory drawing which shows the basic structure of a present Example. It is explanatory drawing which shows the plane of the vehicle of a present Example. It is explanatory drawing which shows the side surface of the vehicle of a present Example. It is explanatory drawing which shows the heating apparatus which heats the small pulley of a present Example.

Explanation of symbols

1 Large pulley 2 Small pulley 3 Shape memory alloy wire 4 Wheel

Claims (6)

  A plurality of large pulleys are arranged via small pulleys, and an endless shape memory alloy wire is installed between the large pulleys and the small pulleys, and all the pulleys are rotated by heating the small pulleys. Shape memory alloy heat engine characterized by   Two large pulleys are arranged via one small pulley, and endless shape memory alloy wires are respectively installed between the two large pulleys and one small pulley to heat the small pulleys. Therefore, the amount of deformation of the shape memory alloy wire deformed along the circumference of a small pulley with a small diameter is large, and thus the driving force is increased by increasing the amount of recovery of the shape memory alloy wire by the heating. The two small pulleys are arranged on the small pulley via the shape memory alloy wire so that the rotational force of the two large pulleys can be obtained by heating the one small pulley. A shape memory alloy heat engine characterized by comprising.   The shape memory alloy heat engine according to any one of claims 1 and 2, wherein the small pulley is heated by heating predetermined portions on both the left and right sides through a central portion of the small pulley.   The shape memory alloy heat engine according to any one of claims 1 to 3, wherein a plurality of the shape memory alloy wires are installed between the large pulley and the small pulley.   The shape memory alloy heat engine according to claim 1, wherein a wheel is provided on the large pulley.   A vehicle using the shape memory alloy heat engine according to claim 1.

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