JPS6226143Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a jumping toy using a shape memory alloy.

Shape-memory alloy is a special alloy that is formed into a certain shape at a certain high temperature, then lowered to a lower temperature and then changed to the desired shape. An alloy that has a shape memory effect that allows it to return to a fixed shape.

Known examples of this type of shape memory alloy include Ni-Ti alloy and Al-Ni-Cu alloy.

The object of the present invention is to provide a simple and interesting jumping toy that utilizes the shape memory effect of these alloys.

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 illustrate an embodiment of the present invention, in which a jumping toy is shaped like a grasshopper. This battuta 1 has multiple pairs of legs 2a, 2b to 4a, 4b, one pair each on the left and right.
As shown in FIG. 1, these legs have a shape memorized so that they are in an extended state at a predetermined high temperature. In this embodiment, the shape of the straightened state is memorized at a suitable temperature, for example 40 degrees, which can be easily achieved using, for example, a hair dryer.

The grasshopper 1 with such a shape memorized is kept at room temperature, and each of its legs 2a, 2b to 4a, 4b is
As shown in the figure, it is bent into a V-shape and plastically deformed.

In this state, use a hair dryer etc. to blow it up.
When the hot air 15 heated to
As shown in the figure, the restoring force acts as a reaction against the grasshopper 1, allowing the grasshopper 1 to jump from the floor or the like.

Since the jump is only performed once, after a short period of time, each leg 2a, 2b to 4a, 4b is bent again as shown in Figure 2, and the jump can be repeated as many times as necessary by heating it with a hair dryer or the like. It can be made to perform a jump.

In this way, it is possible to obtain a jumping toy that utilizes instantaneous return force without using a complicated jumping mechanism that uses a spring, battery, or the like.

3 and 4 are for explaining another embodiment of the present invention, and this embodiment is shown as an example having the shape of a frog 5. FIG.

The frog 5 has front and rear legs 6, 6 and 7, 7, and the rear legs 7, 7 have a lower half 7a and an upper half 7b.
It is divided into two parts, which are connected to the body of the frog 5, and inside there is a linear core material made of a shape memory alloy that penetrates from the body to the upper half 7b and the lower half 7a. 8 is passed. The shape of the core material 8 is memorized at a temperature at which it is in an upright state, for example, the temperature of tea or bath water.

Therefore, as shown in FIG. 3, the core material 8 should be bent and plastically deformed between the lower half 7a and the upper half 7b and between the upper half 7b and the body at room temperature. For example, as shown in FIG. 4, when the hot water 10 in the hot water cup 9 is poured into the hot water 10, the rear legs 7 become straightened almost instantaneously, kicking the hot water 10 outward as shown in FIG. It can jump and surprise those who see it.

5 and 6 are other embodiments of the present invention, which adopt the shape of a shrimp 11 as a jumping toy. This shrimp 11 is not shown in the illustration, but
A shape memory alloy wire rod is embedded inside along the axial direction, and the outside is coated with a soft synthetic resin. Then, as shown in FIG. 5, the core material (not shown) is bent at its tail 11a side so as to form an approximately "C" shape, and its shape is memorized in an atmosphere at a temperature similar to that of a bath, for example. There is.

Therefore, as shown in FIG. 6, if the shrimp 11 is plastically deformed into an upright state and placed in bath water, the tail portion 11a side will instantly restore its shape to a "shi" shape. Therefore, the tail part 11a hits the hot water and moves backward in exactly the same state as a normal shrimp. An example of this is not a jump in air, but a jump in the same fluid as air.

As is clear from the above explanation, according to the present invention, the movable bending part of an animal that moves by bending and stretching is formed by using a shape memory alloy as it is or by embedding a core material made of this alloy. By storing a shape in a predetermined shape under a predetermined temperature condition, deforming it into another shape at room temperature, and applying the same temperature conditions as when it was memorized, the restoring force is used to perform jumping motions, etc. This makes it possible to create an unprecedented jumping toy that can jump through the air and swim underwater like a real animal without using any complicated drive mechanisms.

[Brief explanation of the drawing]

1 and 2 are perspective views of an embodiment of the present invention in a storage state and a deformed state, and FIGS.
The figure is a perspective view of another embodiment of the present invention in a modified state and an operating state, and FIGS. 5 and 6 are perspective views of another embodiment of the present invention in a storage state and a modified state. 1...butter, 2a, 2b ~ 4a, 4b...
Legs, 5... Frog, 7... Legs, 8... Core material, 11
...Shrimp, 15...Hot wind.

Claims (1)

[Scope of utility model registration request] A jumping toy characterized in that a shape-memory alloy is used for the movable bending part of an animal that moves by bending and stretching, and the core material is memorized into a substantially elongated shape under a predetermined high temperature condition.