JPH0596027A - Air filling ball - Google Patents

Abstract

PURPOSE: To provide an air-filled ball which can be easily inflated and in which the printed pattern or letters are not deformed by adding to an internal sheet a diameter reducing means to reduce the diameter of the sheet after each external peripheral part of an upper panel, the internal sheet, and a lower panel which are at least three making one set is sealed. CONSTITUTION: When air is charged from an air charging valve 5, an upper expansion chamber 20 and a lower expansion chamber 30 are expanded through vent holes 40, 40, and because the diameter of an internal sheet 4 is reduced in the direction of the arrows A, A by a diameter reducing means 6, top parts of an upper panel 2 and a lower panel 3 are expanded in the direction of the arrows B, B. The ball can be easily expanded with small charging quantity, and because the thickness of the upper panel and the lower panel is not changed, the printed pattern or letters is prevented from being deformed and can be kept in an excellent condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-filled ball, and more particularly to providing an inner sheet with a means for reducing the diameter to facilitate air-filling and to deform figures and characters printed on the upper and lower panels. The present invention relates to an air-filled ball that maintains a good shape without any damage.

[0002]

2. Description of the Related Art FIG. 10 is a perspective view showing a conventional air-filled ball.
Are a plurality of spindle-shaped panels 70, 70 ... (Six in the figure), an upper seal 71 for sealing the upper parts of the panels 70, 70 ..., and a lower seal 72 for sealing the lower parts of the panels 70, 70. And an air injection valve 73 attached to the center of the upper seal 71.

However, usually 6 to 8 panels 70, 70
Since it is necessary to hermetically bond each other by heat bonding or the like, the number of steps is increased and the manufacturing cost cannot be kept low.

Therefore, as shown in FIGS. 11 to 13, the air-filled balls 8 are attached to the upper panel 80 and the lower panel 8.
It has been proposed that the air-filled ball 8 is completed by including only the intermediate seat 82, the air-injection valve 83, and heat-welding each outer peripheral portion. That is, as shown in FIG. 11, it suffices to stack and heat-bond each outer peripheral portion so that the upper panel 80 and the lower panel 81 have a larger diameter than the intermediate sheet 82 by the airtight and flexible circular sheet material. .. As a result, the number of steps could be greatly reduced, but as shown in FIG. 12, there was a drawback that the cross section was elliptical due to the presence of the intermediate sheet 82. Of course, as shown in FIG. 13, if air is further injected from the air injection valve 83, a cross section close to a perfect circle is obtained, but the portion E near each outer peripheral portion joined by heating is thick and the far portion F is thin. The air injection valve 83 has also moved to a position off the center. Further, since the distant portion F becomes thin, there is a drawback in that the designs and characters printed on the surfaces of the upper panel 80 and the lower panel 81 of the air-filled ball 8 are deformed. This has been a big problem in view of the purpose for which the air-filled ball 8 is frequently used for advertising activities. Also, until the thickness of the upper panel 80 and the lower panel 81 is changed, a child cannot inflate because it does not approach a perfect circle unless air is injected, and it is difficult for an adult to inflate completely. It was

[0005]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an air-filled ball which eliminates the above problems of the prior art, can be easily inflated, and does not deform printed patterns or characters.

[0006]

SUMMARY OF THE INVENTION The present invention includes a diameter reducing means for reducing the diameter of a sheet to an inner sheet after sealing at least three sets of outer peripheral portions of an upper panel, an inner sheet and a lower panel. Its main feature is to increase the diameter of the upper and lower expansion chambers by attaching it. Then, the purpose of easily expanding the ball without deforming the printed design or characters is achieved by providing the inner sheet with a diameter reducing means.

[0007]

1 to 3 show a first embodiment according to the present invention. 1 to 3, an air-filled ball 1 according to a first embodiment of the present invention includes an upper panel 2, a lower panel 3, an inner seat 4, and an air injection valve 5 provided in the center of an upper surface of the upper panel 2. And a diameter reducing means 6 for reducing the diametrical distance of the inner sheet 4 in the directions of arrows A, A ... at appropriate portions (the central portion in the figure) of the inner sheet 4.

Then, as shown in FIG. 3, an upper panel 2, a lower panel 3 and an inner sheet 4 each made of an airtight and flexible circular sheet material, and the diameters of the upper panel 2 and the lower panel 3 are equal to those of the inner sheet 4. In addition to being configured to be longer than the diameter, an air injection valve 5 is integrally formed in the center of the upper panel 2 and its outer peripheral portion is heat-bonded to the outer peripheral portions of the lower panel 3 and the inner sheet 4. Then, the upper expansion chamber 20 is provided between the upper panel 2 and the inner sheet 4.
The lower expansion chamber 30 between the lower panel 3 and the inner sheet 4.
Are formed respectively. The air injection valve 5 can be attached to the lower panel 3.

The inner sheet 4 is provided with a plurality of vent holes 40, 40 ... Connecting the upper expansion chamber 20 and the lower expansion chamber 30 so that the air (not shown) injected from the air-injection valve 5 is in the upper expansion chamber. The air that reaches the lower expansion chamber 30 through 20 and is filled in the lower expansion chamber 30 is discharged from the air injection valve 5 through the upper expansion chamber 20.

In the first embodiment, the diameter reducing means 6 is formed of a sheet material having a heat reducing property provided in the center of the inner sheet 4, so that the upper panel 2, the lower panel 3 and the inner sheet are formed. By heat-bonding the outer peripheral portions of 4 to each other, as shown in FIG. 2, the diameter reducing means 6 is reduced by heating, and the diameter of the inner sheet 4 is reduced by the arrow A,
A: Reduce in the direction. As the sheet material having this heat-reducing property, for example, film- or sheet-shaped polyvinylidene chloride, polyvinyl chloride, polyethylene or the like is suitable. It is possible to form the entire inner sheet 4 as the diameter reducing means 6 from a sheet material having a heat reducing property, and there is an advantage that the manufacturing process can be simplified.

The operation of the first embodiment will be described below.
As shown in FIG. 1, when air is injected from the air injection valve 5, the upper expansion chamber 20 and the lower expansion chamber 30 are vented to the vent holes 40, 4.
Although it expands through 0, the diameter of the inner sheet 4 is reduced in the directions of arrows A, A ... By the diameter reducing means 6, so that the vertex portions of the upper panel 2 and the lower panel 3 are expanded in the directions of arrows B, B. .. As shown in FIG. 2, the one that is expanded from the conventional position shown by the broken line C and has a nearly circular shape can be easily inflated with a smaller amount of air injected than the conventional one, and the upper panel 2 and the lower panel 3 can be inflated. Since the thickness of the pattern does not change, printed patterns and characters do not change. The expanded form after the air injection may have a cross-sectional shape close to a perfect circle, or may be the air-filled ball 1 having an elliptical cross-sectional shape.

FIG. 4 shows a second embodiment according to the present invention. In FIG. 4, in the air-filled ball 1 according to the second embodiment, the diameter of the inner sheet 4 is reduced by heating the inner sheet 4 in the direction of the arrow D and joining the inner sheet 4 as the diameter reducing means 6. However, the adjustment for reducing the diameter is performed by selecting a sheet material having a large elastic coefficient as the inner sheet 4 in some cases. The other constituent members and the operation of the invention are the same as those in the first embodiment, and the description thereof will be omitted.

5 and 6 show a third embodiment according to the present invention. 5 and 6, in the air-filled ball 1 as the third embodiment, the auxiliary seat 60 is attached to the center of the inner seat 4 as the diameter reducing means 6 and the auxiliary expansion chamber 6 is provided.
1 and the air-injection valve 5 of the auxiliary seat 60
An auxiliary valve 62 having an outer diameter smaller than the inner diameter of the air injection valve 5 and protruding to the outside of the air-filled ball 1 through the air injection valve 5 is provided at a position corresponding to. Therefore, as shown in FIG. 6, the diameter reducing means 6 of the third embodiment bends the center of the inner sheet 4 by expanding the auxiliary expansion chamber 61 first, so that the diameter of the inner sheet 4 is indicated by the arrow A. , A direction can be reduced. The other constituent members and the operation of the invention are the same as those in the first embodiment, and therefore the description thereof will be omitted.

7 to 9 show a fourth embodiment according to the present invention. 7 to 9, in the air-filled ball 1 according to the fourth embodiment, the diameter-reducing means 6 is provided with a shortening projection 63 at a position corresponding to the air injection valve 5 of the inner seat 4.
And the inner sheet 4 on both sides of the shortening protrusion 63.
By including the shortening fixing portion 64 provided in the above, as shown in FIG. 8, when the shortening protrusion 63 is projected from the insufflation valve 5 as much as necessary and the shortening fixing portion 64 is fixed, as shown in FIG. , Inner sheet 4 whose diameter is reduced in the direction of arrow A, A
Can be formed. Therefore, the degree of diameter reduction of the inner sheet 4 can be freely adjusted by the shortening fixing portion 64. The other constituent members and the operation of the invention are the same as those in the first embodiment, and the description thereof will be omitted.

[0015]

As described above, the air-filled ball of the present invention has at least three pairs of the upper panel, the inner sheet, and the lower panel after sealing the outer peripheral portions thereof,
By attaching a diameter reduction means to reduce the diameter of the inner sheet, even a child can easily inflate with a small amount of air injection, and the printed pattern and letters are kept in good condition without being deformed You can

[Brief description of drawings]

FIG. 1 is a perspective view of an internal perspective display showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing an expanded state of the first embodiment.

FIG. 3 is a cross-sectional view showing a heating and bonding state of the first embodiment.

FIG. 4 is a sectional view showing a second embodiment of the present invention.

FIG. 5 is a sectional view showing a third embodiment of the present invention.

FIG. 6 is a sectional view showing an expanded state of the third embodiment.

FIG. 7 is a sectional view showing a fourth embodiment of the present invention.

FIG. 8 is a sectional view showing a shortening process of the fourth embodiment.

FIG. 9 is a sectional view showing the completion of the shortening process of the fourth embodiment.

FIG. 10 is a perspective view of an internal perspective display showing a prior art air-filled ball.

FIG. 11 is a cross-sectional view showing an expanded state of a conventional air-filled ball.

FIG. 12 is a sectional view showing an over-expanded state of a conventional air-filled ball.

[Explanation of symbols]

 1 Air-filled ball 2 Upper panel 3 Lower panel 4 Inner seat 5 Air injection valve 6 Diameter reduction means 20 Upper expansion chamber 30 Lower expansion chamber 40 Vent hole 61 Auxiliary expansion chamber 62 Auxiliary air injection valve 63 Shortening protrusion 64 Fixed part for shortening

[Procedure amendment]

[Submission date] September 22, 1992

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a perspective view of an internal perspective display showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing an expanded state of the first embodiment.

FIG. 3 is a cross-sectional view showing a heating and bonding state of the first embodiment.

FIG. 4 is a sectional view showing a second embodiment of the present invention.

FIG. 5 is a sectional view showing a third embodiment of the present invention.

FIG. 6 is a sectional view showing an expanded state of the third embodiment.

FIG. 7 is a sectional view showing a fourth embodiment of the present invention.

FIG. 8 is a sectional view showing a shortening process of the fourth embodiment.

FIG. 9 is a sectional view showing the completion of the shortening process of the fourth embodiment.

FIG. 10 is an internal perspective view showing a prior art air-filled ball.

FIG. 11 is a cross-sectional view showing a heating and bonding state of a conventional air-filled ball.

FIG. 12 is a cross-sectional view showing an expanded state of a conventional air-filled ball.

FIG. 13 shows an overexpanded state of a conventional air-filled ball.
It is sectional drawing shown.

Claims (5)

[Claims] 1. A structure comprising at least a set of at least three sheets each made of an airtight sheet material, an inner sheet and a lower panel, and integrally sealing outer peripheral portions of the upper panel, the inner sheet and the lower panel. The upper panel and the inner seat form an upper expansion chamber, the inner seat and the lower panel form a lower expansion chamber, and at least one of the upper panel and the lower panel is provided with an air-injection valve, and the inner seat is vertically expanded. An air-filled ball having a vent for connecting the chambers, wherein the inner sheet is provided with a diameter reducing means for reducing a diametric distance after sealing the sheet material. 2. The air-filled ball according to claim 1, wherein the diameter reducing means is a heat reducing material provided on the inner sheet. 3. The inner sheet, wherein the diameter reducing means integrally joins and seals the outer peripheral portions of the upper panel, the inner sheet and the lower panel in a state of being stretched in the outer radial direction. The air-filled ball according to claim 1, wherein the ball is provided. 4. The diameter reducing means is composed of an auxiliary expansion chamber provided in the inner seat, and an auxiliary air injection valve provided in the auxiliary expansion chamber and capable of protruding from the air injection valve to the outside of the ball. The air-filled ball according to claim 1, wherein the ball is an air-filled ball. 5. The shortening protrusion provided on the inner seat so that the diameter reducing means can project from the air injection valve to the outside of the ball, and the fixing portions for shortening provided on both sides of the inner seat of the shortening protrusion. The air-filled ball according to claim 1, characterized in that