CN203458799U - Toy balloon for kids - Google Patents

Abstract

The utility model belongs to the field of toys for kids, and discloses a toy balloon for kids. The toy balloon which is of a cylindrical structure with an opening at one end is characterized in that the balloon is made of a plastic film that is less than 160 in color tonal value and less than 0.4V/S[Rho] in thickness, wherein V stands for the volume of the balloon, S stands for the surface area of the balloon, and [Rho] stands for the material density of the plastic film. Through selection of material for the balloon and design of the volume and quality of the balloon, the toy balloon can float and rise under natural irradiation of the sun, is interesting and enables safety to be guaranteed by serving as a toy for kids.

Description

A kind of toy for children balloon

Technical field

The utility model belongs to toy for children field, relates to a kind of toy balloon, specifically a kind of balloon that is filled with normal air but can automatically goes up to the air.

Background technology

Toy is requisite article in child growth process, can be conducive to improve children's cognitive ability, increase children's activity, and mood that can joyful children, allows children in happy middle growth.Balloon is toy a kind of, and there is the mellow and full softness of profile and be difficult for hurting the feature such as children, playing method are simple, be a kind of toy that childhood, children liked the most.Existing toy balloon can be divided into two kinds substantially, a kind of is the common balloon that after the inflation of being made by the stronger material of elasticity, volume swells at double, a kind of is to make the rear Inflated model that forms various given shapes of inflation by the less material of elasticity, the former is many is blown into venting voluntarily by children, obtain happyly, what inside was blown into is normal air.Also can be filled with specially the hydrogen that comparison atmospheric density is lighter, the hydrogen balloon of the effect that making it have wafts rises.Latter is direct preliminary filling hydrogen when producing, as model toy that can be floating.The in the situation that of all whereabouts for familiar object, there is the balloon of the ascending effect that wafts under terrestrial gravitation, for children, can cause its curiosity, more can make children produce joyful sense, but because hydrogen is a kind of imflammable gas, the balloon that is filled with hydrogen has certain potential safety hazard.

In addition, no matter be to be filled with normal air, be still filled with hydrogen, existing balloon interior all has larger air pressure, occasionally has the phenomenon that explosion occurs, and easily makes children get a fright, even likely wound (such as explosion before eyes just etc.).

Summary of the invention

The purpose of this utility model is to reach the balloon of the ascending effect that wafts, to have the problem of potential safety hazard for the existing hydrogen that is filled with, and balloon is because the large idol of air pressure inside has the problems such as explosion, and a kind of balloon that normal air can realize automatic lift-off that is filled with is provided.

For achieving the above object, the technical solution adopted in the present invention is: a kind of toy for children balloon, tubular structure at least one end opening, it is characterized in that, this balloon is less than 160 plastic foil by color gray value and makes, and the thickness of described plastic foil is less than 0.4V/S ρ, the volume that wherein V is balloon, S is the surface area of balloon, the density of material that ρ is plastic foil.

Toy balloon described in the utility model, pours into after air, and opening is tied up with rope, and now, balloon interior air themperature is identical with external air temperature.The balloon that pours into air and tie up opening is placed under sunlight, dark balloon surface absorbs amount of solar heat, be delivered to balloon interior, make the intensification of being heated of balloon interior air, the air that part is heated is extruded by the opening part tying up under gas pressure, and balloon interior atmospheric density declines, and in balloon, atmospheric density drops to, extraneous air is greater than after balloon weight the buoyancy of its generation, and balloon starts the liter that slowly wafts.

Toy balloon of the present utility model has following features: adopting the material of making balloon is plastic foil, compares with the quality of rubber materials of traditional balloon, and its density is less, and balloon overall weight is little, for balloon buoyance lift has brought possibility.The dark plastic foil that color gray value is less than 160, has the strong feature of the light ability of absorption, adopts dark plastic foil can effectively absorb sunshine heat, be conducive to improve balloon interior temperature, bring internal-external temperature difference, finally make balloon become fire balloon, reach the effect of buoyance lift automatically.The thickness of controlling plastic foil, is at least less than the weight of plastic foil, and when the balloon internal-external temperature difference average buoyancy that extraneous air produces balloon when 10 spend, assurance balloon is realized buoyance lift under sunlight irradiates naturally.Because balloon interior gas can be discharged from tying after being heated, internal pressure can not raise substantially, and the situation of the blast of can effectively avoiding breaking because internal pressure increases, has guaranteed its security as toy for children.

In order further to guarantee to realize buoyance lift within the irradiation short period, toy balloon described in the utility model is preferably used black plastic membrane material to make, plastic foil thickness is preferably less than 0.2V/S ρ, selects the plastic foil in this thickness range almost can be raised to about 5 degree and can realize buoyance lift at internal-external temperature difference.

For guaranteeing the intensity of toy balloon, damage easily avoiding, preferably there is the L/HDPE film of the features such as lightweight, intensity are good as the making material of balloon.

Toy balloon described in the utility model can be selected an end opening, also can both ends open, with increase children start experience.Children, when experiencing the toy balloon of both ends open, can first tie up an end opening, then pour into air, then tie up other end opening.

Accompanying drawing explanation

Fig. 1 is that a kind of opening bundle of toy balloon described in the utility model is view.

Fig. 2 is the demonstration graph that described toy balloon pours into the mode of air.

Fig. 3 experiences the demonstration graph of a kind of mode of described toy balloon for children.

Fig. 4 is described toy balloon afloat schematic diagram.

The specific embodiment

Below in conjunction with accompanying drawing, toy balloon described in the utility model is described further.

Table 1 normal atmosphere is depressed air themperature table corresponding to atmospheric density

Visible with reference to table 1, at normal atmosphere, to depress, air reduces with temperature rising density, 5 degrees Celsius of average risings, atmospheric density reduces 0.02kg/m ³.According to buoyancy calculations formula, air is to filling float=V thing * ρ gas of buoyancy F of the balloon of air, if realizing balloon rises while there is the temperature difference inside and outside, that needs air at this moment the buoyancy of balloon to be greater than the weight of balloon, the volume that the V of take is balloon, the surface area that S is balloon, the thickness that D is plastic foil, ρ is the density of material of plastic foil, with equation expression, is: in

﹤ V ρ outer (1) in S * D * ρ+V ρ

After formula (1) conversion, can obtain:

Outside S * D * ρ ﹤ V(ρ-ρ is interior) (2)

Further:

Outside D ﹤ V(ρ-ρ is interior)/S * ρ (3)

With under shining upon, maximum 10 degrees Celsius of balloon internal-external temperature difference be example, ρ outward-mean value in ρ is 0.04, can draw thus, realize balloon and should meet D ﹤ 0.04V/ S ρ condition at the plastic foil thickness D that shines upon lower buoyance lift.

With reference to Fig. 1-4, toy balloon shown in this example is both ends open tubular structure, and children, when not testing this balloon, need first an end opening to be tied up with cotton rope, as shown in Figure 1.Then pick up other end edge of opening, strut opening, to a direction, run, air is poured in balloon, as shown in Figure 2.And then other end opening is tied up with one end of a long cotton rope.To there being the hand-held long cotton rope in the place shining upon, maybe the other end of long cotton rope being pricked and tied up on certain fixture, as shown in Figure 3 afterwards.Balloon is under solar radiation, slowly heats up in inside, and density reduces, and gradually rises in the air, as shown in Figure 4.

Claims (5)

1. a toy for children balloon, the tubular structure at least one end opening, is characterized in that, this balloon is less than 160 plastic foil by color gray value and makes, and the thickness of described plastic foil is less than 0.4V/S ρ, the volume that wherein V is balloon, S is the surface area of balloon, the density of material that ρ is plastic foil.

2. toy for children balloon according to claim 1, is characterized in that, this balloon is made by black plastic film.

3. toy for children balloon according to claim 1, is characterized in that, the thickness of described plastic foil is less than 0.2V/S ρ.

4. toy for children balloon according to claim 1, is characterized in that, described plastic foil is L/HDPE film.

5. toy for children balloon according to claim 1, is characterized in that, this balloon both ends open.

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