JP2709274B2 - Floating bag and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a floating bag, and more particularly, to a floating bag which does not cause pain or misalignment even when an infant or the like inserts a leg into a leg insertion hole of the floating bag.

[0002]

2. Description of the Related Art Conventionally, as such a floating bag, for example, the one disclosed in Japanese Patent Application No. 63-255847 is well known as a conventional example. As shown in FIG. 6, the floating bag according to this conventional example has a buoyancy body 1 made of a synthetic resin sheet having a through hole 1a at the center.
a, the leg insertion holes 3, 3 of the seat body 2 are opposed to each other in a floating bag formed by welding a seat body 2 formed of synthetic resin sheet leg insertion holes 3, 3 and a seat to the lower side. Both edges of the synthetic resin sheet in the long side direction are folded back and welded to the inside of the opposed synthetic resin sheet.

[0003]

However, in the floating bag disclosed in the above-mentioned Japanese Patent Application No. 63-255847, the end faces of the leg insertion holes 3, 3 of the seat 2 are made to face each other. By folding both sides of the synthetic resin sheet in the long side direction inside the synthetic resin sheet, the leg insertion holes 3, 3
Since the peripheral edges 3a, 3a have a rounded shape, there is an advantage that it is possible to prevent a leg or a displacement of a crotch in a leg when a toddler or the like who is a player gets on or off the vehicle. In the configuration, the rounded edges 3a, 3a
In order to obtain, after welding both edges of the synthetic resin sheet in the long side direction which are arranged opposite to each other, it is necessary to turn this upside down to form a seat body. there were.

The present invention has been made in view of such a problem, and a seat body (in detail, a leg which does not cause a pain or a shift in a crotch even when an infant or the like inserts a leg into a leg insertion hole of a floating bag). It is an object of the present invention to provide a floating bag with good productivity and a method for manufacturing the same, in which the insertion hole can be formed more easily and reliably.

[0005]

SUMMARY OF THE INVENTION In order to solve the conventional problems as described above and to achieve the intended object, the present invention is characterized by a buoyancy body having a through hole in the center, and a buoyancy body. And a pair of leg insertion holes formed at predetermined positions of the seat, and a pair of leg insertion holes formed at predetermined positions of the seat body . Opening edge
The leg hole protection members are arranged in the leg insertion holes, respectively.
A pair of annular curved projections to be combined, and an outer periphery of the annular curved projection
And a pair of annular curved surfaces
And a joint portion for integrally connecting the projections .

[0006]

Further, according to the present invention, a buoyancy body is formed by polymerizing a sheet of vinyl chloride or the like cut into a ring shape so as to form a through hole in the center and welding the inner and outer peripheral edges thereof. A first step, a second step of die-cutting a sheet body of the same material to form a pair of leg insertion holes at predetermined positions to form a seat body sheet of a desired size; and a third step of welding under the through hole of the body, the first
2. During or after the third step, the pair of legs is inserted.
Welding leg hole protection member to the hole to protect the chamfer of the same leg insertion hole.
In the method for manufacturing a floating bag to be formed , the leg hole protecting member is
A pair of annular curved projections respectively aligned in the leg insertion holes
And a flange formed to protrude on the outer periphery of the annular curved surface projection
Part and the pair of annular curved surface projections are integrally connected to each other.
A joint part, and the flange part and the joint part
Then, the present invention resides in a method of manufacturing a floating bag which is welded to the leg insertion hole .

[0008]

Further, it is preferable that the leg hole protection member is welded from the back surface of the seat body sheet such that the annular curved surface projection is located inside the leg insertion hole.

[0010]

The floating bag of the present invention constructed as described above is provided with the leg
Hole protection members are respectively aligned in the leg insertion holes.
A pair of annular curved projections and overhangs the outer periphery of the annular curved projections
The flange formed so that the pair of annular curved surface projections
And a joint portion that is integrally connected, so that the leg hole protection member is simply welded to the leg insertion hole.
With one-touch mounting, it is easy to bevel the periphery of the leg insertion hole
It can be done simply and smoothly .

[0011]

Further, in the method for manufacturing a floating bag according to the present invention, a sheet material such as vinyl chloride cut out in a ring shape to form a through hole in the center is polymerized, and the inner peripheral edge and the outer peripheral edge thereof are welded. A first step of forming a buoyancy main body, and a second step of cutting a sheet body of the same material to form a pair of leg insertion holes at predetermined positions to form a seat body sheet of a desired size. A third welding step of welding the seat body under the through hole of the buoyancy body;
And during or after the second and third steps
A leg hole protection member is welded to the pair of leg insertion holes to
In the method of manufacturing a floating bag for protecting a chamfer of an insertion hole, the leg hole protection members are respectively aligned in the leg insertion holes.
A pair of annular curved projections,
A pair of annular curved surface projections
And a joint part for integrally connecting the collars.
By welding to the leg insertion hole through the joint and the joint , the seat body sheet does not need to be bent or turned upside down as in the related art, so that the efficiency of the production operation can be further increased and such protection can be achieved. Positioning of member and leg insertion hole
Fixing can be performed easily and reliably . Hereinafter, the present invention will be described in more detail with reference to Examples.

In this specification, the term "leg hole protection member" refers to any protection member that is mounted for the purpose of chamfering a leg insertion hole formed in a seat body. It is preferable to mold with a flexible material such as rubber or urethane.

[0014]

Next, an embodiment of the present invention will be described with reference to the drawings. In order to facilitate understanding, the same parts as in the prior art will be described with the same reference numerals. A in the figure shows a bladder according to the present invention.
As shown in FIG. 1, a buoyancy body 1 made to imitate the shape of an airplane, a seat body 2 arranged to close a portion below the through hole 1a of the buoyancy body 1, and a buoyancy body It has a pair of leg insertion holes 3 and 3 formed and a leg hole protection member 4 attached to the leg insertion holes 3 and 3.

The buoyancy body 1 is formed by superimposing a sheet body (not shown) made of a ring-shaped vinyl chloride or the like cut into a ring shape so as to form a through hole 1a in the center, and welding the inner and outer peripheral edges thereof. This is formed into a hollow annular floating bag, and is used by inflating air into the hollow through a suction port (not shown).

At a desired position of the buoyancy body 1, a handle 5 for a player to grasp, wings 6 and 6 extending in the left-right width direction, a vertical tail 7 and the like are protrudingly provided. Needless to say, a pattern such as a picture, a pattern, or a character is printed on the surface of the buoyancy body.

On the other hand, the seat 2 is formed by cutting a sheet (not shown) of the same material to form a pair of leg insertion holes 3 and 3 (see FIG. 2) at predetermined positions. By welding such a seat sheet under the through-hole 1a of the buoyancy body 1, the seat is provided as a seat on which a player such as an infant can ride.

Further, a leg hole protection member 4 is mounted in each leg insertion hole 3. The leg hole protection member 4 is formed from a flexible member such as rubber, and as shown in FIG.
Annular curved projections 4a, 4a respectively aligned in the leg insertion holes 3, flanges 4b, 4b formed to protrude on the outer periphery of the annular curved projections 4a, 4a, and the annular curved projection 4a , 4a are integrally connected to each other, and are welded through the flanges 4b, 4b and the joint 4c (see FIG. 4).

As shown in an enlarged view in FIG. 4, the annular curved projection 4a is formed in a spherical cross section projecting inward and outward from the inner peripheral edge 3a of the leg insertion hole 3 to protect the inner peripheral edge 3a. It has an appropriate hardness so that it can be used.

The leg hole protecting member 4 is preferably welded to the bottom surface of the seat 2 as shown in FIG.
This is because when the cover is closed and a glance is made from above, the flange portion 4b can be prevented from being exposed in appearance, and the bottom surface of the seat body 2 can be strengthened.

The floating bag of the present invention thus constructed has the leg hole protecting members 4 mounted in the leg insertion holes 3 and 3, so that when a player such as an infant gets on or off the vehicle, the leg may be damaged. Since there is no crotch shift, and the chamfering of the leg insertion holes 3 and 3 can be easily performed as in the related art, the production efficiency can be improved.

Next, the first method of the present invention will be described.
The steps will be described. First, a sheet body such as vinyl chloride is cut out in a ring shape. And the through hole 1a in the center
The buoyancy body 1 is formed by polymerizing such a sheet body that has been die-cut so as to form an inner peripheral edge and an outer peripheral edge thereof.
To form

Next, the second step will be described. The seat body 2 to be mounted in the through hole 1a of the buoyancy body obtained in the previous step is formed. The seat body 2 is formed of a seat body sheet formed by cutting a desired shape to form a pair of leg insertion holes 3 in a seat body made of the same material as the buoyancy body 1. This seat body sheet has a size (the same shape and the same size) that matches the through hole 1a so that the lower end side of the through hole 1a can be closed, and a welding margin (not shown) is provided on the periphery. Is formed.

It is preferable that the leg hole protecting member 4 is welded and fixed to the pair of leg insertion holes 3 and 3 during or after the die cutting of the seat body sheet (see FIG. 4). Also,
The attachment and welding of the decorative members such as the handle 5, the wings 6, 6 and the vertical tail 7 may be performed in the first step or the second step or in the next third step.

Next, the third step will be described. By welding the seat body sheet obtained in the previous step below the through hole 1a of the buoyancy body 1 by a conventional method, a seat portion on which a player can get on and off is integrally formed, and a final product (floating bag) is obtained. .

Therefore, according to the manufacturing method of the present invention, bending and turning over of the seat sheet as in the related art are not required, so that the number of assembling steps can be reduced, and the method can be performed more easily and speedily (with good leg removal). Since the seat can be assembled, the efficiency of the production work can be further improved.

It should be noted that the present invention is not limited to these embodiments, but can be freely changed in design within the scope of the present invention, and the present invention covers all of them. For example, although the bladder A of the present embodiment imitates an airplane, it is not limited to this, and it goes without saying that it is formed into an appropriate form such as a ship, a car, an animal, or the like.

[0028]

[Effect of the invention] The present invention is constructed as described above, the leg
Hole protection members are respectively aligned in the leg insertion holes.
A pair of annular curved projections and overhangs the outer periphery of the annular curved projections
The flange formed so that the pair of annular curved surface projections
And a joint portion that is integrally connected, so that the leg hole protection member is simply welded to the leg insertion hole.
With one-touch mounting, it is easy to bevel the periphery of the leg insertion hole
It has an excellent effect of being simple and smooth .

[0029]

Further, in the method for manufacturing a floating bag according to the present invention, a sheet of vinyl chloride or the like cut into a ring shape to form a through hole in the center is polymerized, and the inner peripheral edge and the outer peripheral edge are welded. A first step of forming a buoyancy main body, and a second step of cutting a sheet body of the same material to form a pair of leg insertion holes at predetermined positions to form a seat body sheet of a desired size. A third welding step of welding the seat body under the through hole of the buoyancy body;
And during or after the second and third steps
A leg hole protection member is welded to the pair of leg insertion holes to
In the method of manufacturing a floating bag for protecting a chamfer of an insertion hole, the leg hole protection members are respectively aligned in the leg insertion holes.
A pair of annular curved projections,
A pair of annular curved surface projections
And a joint part for integrally connecting the collars.
By welding to the leg insertion hole through the joint and the joint portion , the seat body sheet does not need to be bent and turned upside down as in the related art, so that the efficiency of the assembly and manufacturing operation can be further improved and such Position of protection member and leg insertion hole
This has the effect that the fixed fixing can be performed easily and reliably .

[0031]

The leg hole protecting member is welded to the back surface of the seat body sheet so that the annular curved projection is located inside the leg insertion hole, so that only the annular curved projection is a leg of the player. Since it can come into contact with the legs, there is no problem such as displacement of the crotch and the like, and since the leg insertion hole and the bottom of the seat body are reinforced, easy damage can be prevented.

As described above, according to the present invention, even when an infant or the like inserts a leg into a leg insertion hole of a floating bag, a leg insertion hole which does not cause pain or crotch displacement can be formed more easily and reliably. In addition, the present invention can provide a floating bag with good productivity and a method for manufacturing the same, and can supply the consumer with a simple structure and suitable for mass production at a low price.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floating bag according to the present invention.

FIG. 2 is a plan view of the floating bag.

FIG. 3 is a plan view of a leg hole protecting member used in the present embodiment.

FIG. 4 is a cross-sectional view taken along line BB of FIG. 3;

FIG. 5 is a bottom view of the floating bag.

6 (a) is a plan view showing a conventional floating bag, FIG.
(B) is the same side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flying bag 1a Through hole 2 Seat 3 Leg insertion hole 4 Leg hole protection member 4a Curved projection 4b Flange 4c Joint

Claims (3)

(57) [Claims] 1. A buoyant body having a through hole in the center, a seat body disposed to close the buoyant body below the through hole, and a pair of leg insertion holes formed at predetermined positions of the seat body. And the leg insertion hole has at least an opening of the hole.
In a floating bag having a leg hole protecting member provided around an edge, the leg hole protecting member is arranged in each of the leg insertion holes.
A pair of annular curved projections to be combined, and an outer periphery of the annular curved projection
And a pair of annular curved surfaces
Do not include a joint that connects the projections
Bladder, characterized in that that. 2. A die is cut into a ring shape to form a through hole in the center.
Polymerized sheet material such as vinyl chloride
First step of forming a buoyancy body by welding an edge and an outer peripheral edge
And the same material to form a pair of leg insertion holes at predetermined positions.
The seat body is cut out to form a seat body sheet of a desired size.
A second step, and inserting the seat body seat into the through hole of the buoyancy body.
And a third step of welding below.
At or after that, the pair of leg insertion holes is provided with a leg hole protection portion.
Manufacture of a floating bag that protects the insertion hole of the leg by chamfering
In the method, the leg hole protection member is provided in the leg insertion hole.
A pair of annular curved projections respectively aligned with the annular curved surface
A flange formed to protrude on the outer periphery of the projection;
And a joint that integrally connects the annular curved projections
And inserting the leg through the flange and the joint.
Method for producing a floating bag you characterized in that welded to the hole. 3. The leg hole protection member, wherein the annular curved projection is
The back of the seat body seat so that it is located inside the leg insertion hole
The method for producing a floating bag according to claim 2, characterized in that the bag is welded .