JP2014204968A - Pneumatically foldable umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an umbrella which can be folded compact for easy carrying, and which, for practical use, maintains the shape of umbrella by air blown thereinto through an air introduction plug member provided at an apex.SOLUTION: A pneumatically foldable umbrella comprises an umbrella portion 2, an air chamber 5, and a plurality of bone portions 3, which are formed by superimposing at least two circular or polygonal synthetic resin films and boding or welding the synthetic resin films along the outer peripheries of contours of the air chamber and the bone portions. At an apex of the air chamber is disposed an air introduction plug member 6, and at a bottom of the air chamber is disposed a grip portion 4 in communication with the air introduction plug member. An edge line forming line 11 is formed by welding along a required angle width in width direction of the umbrella portion between individual bone portions to make each bone portion form an inclined edge line, thus the umbrella portion is shaped into a cone with a required inclination in general. Consequently, the shape of the umbrella can be maintained stable to meet the requirements of practical use of the umbrella, and at the same time, concentration of air pressure at air introduction can be prevented from peeling off or breaking the bonded portions or welded portion since the communication portions between the bone portions and the air chamber, and the bone portion edges to umbrella portion peripheries are made arcuate.

Description

  The present invention relates to a pneumatic folding umbrella that can be folded in a small size when not in use and carried in a pocket or bag, and blown with air when used to form an umbrella shape.

  As this kind of pneumatic folding umbrella, a plurality of inventions (techniques) are known. As the first related art, for example, the function of the umbrella is made by making the bone or handle of the umbrella into a tubular shape with vinyl or the like without using a material such as metal, filling it with gas, and applying gas pressure thereto. Let A tube or the like is made so that the inside is continuous, filled with gas from one place, and creates an open umbrella state that can be used instantaneously (see Patent Document 1).

  According to this pneumatic umbrella, since no hard material is used, it is folded and compressed except when it is filled with gas, so it can be made very compact. The bone and handle are made of the same material as the cloth, and can be manufactured and completed in the same factory.

  In addition, as a second related art that is publicly known, it is poor in identifying specific structural requirements. For example, a cover for protecting yourself from rain is made into a double structure, and air is put into the cover as a cover. It is an umbrella that has the function of, and an air pump for injecting air, and if it is made to be a telescopic rod, it becomes a folding umbrella, and it becomes an umbrella that you do not need to hold by hand by attaching it to a hat or clothes, It is a pneumatic folding umbrella that does not require bones (see Patent Document 2).

  According to this pneumatic folding umbrella, so that the bone of the umbrella does not pierce the eyes of the human being, the cover is made into a double structure and air is inserted into it so that it can function as a cover even without bone The idea was to make a boneless umbrella by supporting the cover with the power of air.

  Furthermore, as a third known prior art, the upper part of a round or polygonal balloon member made of a film material and the lower part of a round or polygonal balloon member made of a film material provided with a shaft attachment port are formed as a main bone. This is a tube that adheres to the umbrella cloth mold while leaving the part to be bonded, bonds the balloon member shaft portion provided with the air port as the air inlet / outlet to the shaft mounting port, and inserts air into the air port provided in the balloon member shaft portion Is a film balloon umbrella in which a hand with an air filling function is connected to the balloon member shaft (see Patent Document 3).

  According to this film balloon umbrella, there is no danger in the conventional umbrella in which the metal bone is adopted, and it is safe. Moreover, since it is composed of a film balloon, it can be produced at low cost. Due to the above characteristics, it is suitable for use in rainy places such as entertainment facilities and events, and it is also possible to make advertisements by printing advertisements above the entertainment facilities on the film balloon. That's it.

Japanese Patent Laid-Open No. 06-90809 JP 2003-235623 A JP 2012-217818 A

  In the first prior art, the bone and handle of the umbrella is made into a tube or the like by using vinyl or the like without using a material such as a metal, and the gas is filled and sealed there, and the gas pressure is applied thereto to make it work. Etc. are made so that the inside is continuous, filling the gas from one place and making the umbrella open so that it can be used, but the specific configuration is not shown or described, It is merely a wishful observation, and manufacturing based on this does not form an umbrella when gas is introduced.

  In the second prior art, the umbrella portion has a double structure so that it can be used as an umbrella by putting air in it and spreading it. It is said that the cover is supported by the power of air so that it can fulfill its function, but if you actually blow air into the double structure it will be in a balloon state, it will not become an extended umbrella, Although it is said that a folding umbrella can be formed by making the support column extendable, substantially specific components are not described to the extent that they can be implemented in the same manner as in the first prior art. Even if it is manufactured, it does not take the shape of an umbrella when gas is introduced.

  In the third prior art, the umbrella part has a double structure in which the upper part of the balloon member and the lower part of the balloon member of the same shape made of a film material are bonded to each other, and air is introduced without adhering the part within the dotted line. Even if they are bonded together to become the main bone, the overall shape does not become an umbrella cloth type (a hemispherical type like an open general umbrella), and cannot be an umbrella structure. In particular, if the space that becomes the bone is thin, the weight of the double-structured material does not give the strength to maintain the spread as an umbrella, and the root that becomes the bone when the air pressure is increased. There is a problem that the bulging stress due to air pressure concentrates at an adjacent position in the portion and breaks. In short, it is intended for an umbrella having a structure that cannot be implemented as in the first and second prior arts.

Furthermore, there is an invention of a prior application (Japanese Patent Application No. 2011-204472) related to the same applicant as the present invention.
This prior invention has been described so that it can be carried out. When a sample was actually made to test its practicality, a good result was obtained. However, it has been discovered that further improvements need to be made to achieve a more stable umbrella shape when air is introduced.

  Therefore, the conventional technique does not use the metal bone and handle that could not be practically manufactured, and can be folded in a small size and easily carried, and can be stably shaped into an umbrella when air is introduced. Therefore, there is a problem to be solved in order to enable practical use of a foldable umbrella.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a pneumatic folding umbrella that can stably form an umbrella shape when air is introduced.

  The pneumatic folding umbrella of the present invention can form an air chamber located in the center, and a plurality of bone portions and gripping portions that communicate with the air chamber and extend radially, and is folded in its entirety when not in use. A pneumatic folding umbrella that is carried and is used to form an umbrella shape by introducing air into the air chamber, the bone portion, and the grip portion when used, and is a substantially circular first umbrella that forms a part of the air chamber. An air chamber forming portion, a plurality of first bone forming portions extending radially from the outer periphery of the first air chamber forming portion to form a part of the bone portion, and the adjacent first first A first sheet having a plurality of umbrella portions located between each of the bone portion forming portions, a substantially circular second air chamber forming portion forming a part of the air chamber, and the second air A plurality of second bone portion forming portions extending radially from the outer periphery of the chamber forming portion and forming a part of the bone portion; And a grip portion communicating with the second air chamber forming portion, and each of the plurality of first bone portion forming portions corresponds to the first bone portion forming portion. The first air chamber forming portion is joined to the second bone portion forming portion so as to form a space that becomes the bone portion when air is introduced between the second bone portion forming portion and the second bone portion forming portion. The portion where the first bone portion forming portion in the vicinity of the outer periphery of the second air chamber forming portion is not located and the portion where the second bone portion forming portion in the vicinity of the outer periphery of the second air chamber forming portion is not located are It joins so that a chamber may be formed, and at the time of air introduction, the bone part formed by the first bone part formation part and the second bone part formation part inclines toward the grasping part side Thus, a radially extending ridge line is formed in each of the plurality of umbrella portions.

  Preferably, the second air forming portion of the pneumatic folding umbrella of the present invention has substantially the same size and shape as the first air forming portion.

  Preferably, the pneumatic folding umbrella of the present invention includes a joint line between the first bone portion forming portion and the second bone portion forming portion of one adjacent bone portion, and the other adjacent bone. The first bone portion forming portion and the second bone portion forming portion are connected between the adjacent bone portions and the first bone portion forming portion, and the first air chamber forming portion in the vicinity of the outer periphery of the first air chamber forming portion. A joint line between a portion where one bone portion forming portion is not located and a portion near the outer periphery of the second air chamber forming portion where the second bone portion forming portion is not located is integrated with the air chamber side. A smooth joining line protruding in an arc shape is formed.

  ADVANTAGE OF THE INVENTION According to this invention, the pneumatic folding umbrella which can form an umbrella type | mold stably at the time of air introduction can be provided.

It is the perspective view which showed schematically the open state of the pneumatic folding umbrella which concerns on the 1st Embodiment of this invention. It is the sectional side view which showed the principal part of the pneumatic folding umbrella shown in FIG. It is explanatory drawing which expand | deployed and showed the material of the umbrella part in the manufacturing process in the pneumatic folding umbrella shown in FIG. It is explanatory drawing about formation of the bone part and the air chamber in the pneumatic folding umbrella shown in FIG. It is a figure for demonstrating the joining line of the pneumatic folding umbrella shown in FIG. It is a figure for demonstrating the ridgeline formation part of the pneumatic folding umbrella shown in FIG. It is an expansion | deployment side view which shows an example of the holding part in the pneumatic folding umbrella shown in FIG. It is explanatory drawing of the principal part expansion which shows the condition which attaches the holding part in the pneumatic folding umbrella shown in FIG. 1 to an air chamber. It is a figure for demonstrating the manufacturing method of the pneumatic folding umbrella shown in FIG. It is explanatory drawing which unfolded and showed schematically manufacture of the pneumatic folding umbrella which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which showed schematically the manufacture condition of the other Example in the pneumatic folding umbrella which concerns on 2nd Embodiment of this invention. It is a figure for demonstrating the manufacturing method of the pneumatic folding umbrella shown in FIG.

  The present invention will be described in detail based on the illustrated embodiment. First, in the first embodiment shown in FIGS. 1 to 9, the pneumatic folding umbrella 1 according to the present invention is a synthetic resin film that is transparent, translucent or opaque and soft, for example, polyethylene, polychlorinated Vinyl, Teflon (registered trademark), ABS resin, acrylic resin, nylon, epoxy resin, polyester, polycarbonate, etc., or laminated paper, PE laminated paper, rayon laminated paper (trademark), etc. Functional polymer films such as the following, for example, biaxially stretched PV film, non-axially stretched polypropylene, system coextruded film, EVOH system coextruded film, PAN film, aluminum deposited film, transparent deposited film (alumina, silica, two Original), ONY coextruded film, EVOH coextruded OPP film, PVDC Film, PVA coated OPP film, acrylic acid resin coated film, nanocomposite coated film, nanocomposite nylon film, hybrid barrier film, thermal barrier film / sheet, UV degradation prevention film (PVF film), self-cleaning film (photocatalytic function) ), Easy peel film, directional film (straight cut), anti-fogging film (OPP), surface protective film, biodegradable plastic film / sheet, etc. It is formed so as to be always carried in a pocket or handbag in a state of being put in a container.

First, as shown in FIGS. 1 and 2, the folding umbrella 1 includes an umbrella portion 2 that is a circular or polygonal shape, for example, a hexagonal shape and serves as a rain receiving roof, and the umbrella portion 2. Bone portion 3 that maintains the shape of the umbrella when it is expanded, a grip portion (handle) 4 for holding the expanded umbrella, and the grip portion 4 are attached and for maintaining the state in which the umbrella portion 2 is expanded An air chamber 5 for introducing air into the bone 3, and an air introduction plug 6 with a check valve is attached to the top of the umbrella 2, that is, the top of the air chamber 5. Yes. That is, the air introduction plug 6 is attached to the upper portion of the air chamber 5, and the grip portion 4 is attached to the lower portion of the air chamber 5.

As shown in FIG. 3, the folding umbrella 1 is formed by overlapping a first sheet 21 and a second sheet 31.
In FIG. 3, the shaded portion is a portion to be cut off.
The first sheet 21 includes a substantially circular first air chamber forming portion 5a that forms a part of the air chamber 5, and a bone portion 3 that extends radially from the outer periphery of the first air chamber forming portion 5a at equal intervals. A plurality of first bone portion forming portions 3a forming a part of the first bone portion forming portion, and a plurality of umbrella portions 2a positioned between the adjacent first bone portion forming portions 3a.
An air introducing plug 6 is provided in the center of the first air chamber forming portion 5a.

The second sheet 31 includes a substantially circular second air chamber forming portion 5b forming a part of the air chamber 5, and a bone portion 3 extending radially from the outer periphery of the second air chamber forming portion 5b at equal intervals. And a plurality of second bone portion forming portions 3b that form a part thereof.
The first air chamber forming portion 5a and the second air chamber forming portion 5b have substantially the same size and shape.
A hole 8 communicating with the grip portion 4 is formed in the center of the second air chamber forming portion 5b.

  In the present embodiment, the volume of the air chamber 5 when air is introduced is equal to or less than the total volume of the bone part 3.

As shown in FIG. 4, each of the plurality of first bone portion forming portions 3 a has a bone portion when air is introduced between the first bone portion forming portion 3 a and the second bone portion forming portion 3 b corresponding to the first bone portion forming portion 3 a. 3 is joined to the second bone forming part 3b so that a space 3 is formed. The joining is performed by welding by heat, adhesion to become an adhesive, or the like. By the joining, a stripe-like joining line 7c as shown in FIGS. 5 and 6 is formed.
As shown in FIG. 6, the joint line 7b at the tip of the bone 3 is formed in an arc shape.

  Moreover, as shown in FIG. 4, the part where the first bone part forming part 3a in the vicinity of the outer periphery of the first air chamber forming part 5a is not positioned and the second part in the vicinity of the outer periphery of the second air chamber forming part 5b. The part where the bone part forming part 3b is not located is joined so as to form the air chamber 5 when air is introduced. By the joining, an arc-like joining line 7a protruding toward the air chamber 5 as shown in FIGS. 5 and 6 is formed.

The joining lines 7a, 7b, and 7c are connected to draw a smooth curve.
The width of the joining lines 7a, 7b, and 7c is at least 3 mm or more, and after the second sheet 31 is formed by bonding or welding, the second sheet 31 is removed by cutting off the outer peripheral edge of the portion indicated by the oblique lines as the first. Since the sheet 21 forms the umbrella portion 2 that forms the roof in a single layer, it becomes a lightweight umbrella.
The adhesion and welding are performed using a mold corresponding to the joining line.

  Thus, even if the internal pressure of the bone part 3 and the air chamber 5 is increased at the time of air introduction by forming the joining line smoothly and eliminating the corner part, the part where the stress is concentrated can be eliminated. The line can be prevented from peeling off or being damaged.

  At the time of air introduction, each of the plurality of umbrella parts 2a is arranged such that the bone part 3 formed by the first bone part forming part 3a and the second bone part forming part 3b is inclined toward the grip part 4 side. Radially extending ridge line forming portions 11 are formed.

  If the umbrella part 2 integrated in this way is left in a horizontal state, the umbrella part 2 is not inclined. Therefore, in order to give an inclination as the umbrella portion 2, as shown in FIG. 6, in the central portion in the width direction of the umbrella portion 2 located between the bone portions 3, slightly closer to each side than the weld portion 7a. By forming the ridge line forming portion 11 that is welded over a required angle width from the position of each to each side, each bone portion 3 becomes an inclined ridge line. The required angular width in this case is, for example, approximately 10 °, and is a hexagon. For example, an angle of approximately 60 ° of 360 ° is narrowed on the side side as a whole, and the width is narrow. The angle of the ridge line is the same as the angle. Then, in the welded ridge line forming portion 11, an excessive portion is removed leaving a range in which the welding is not separated.

  Further, the formation (processing) position of the ridge line forming portion 11 is not limited to the central portion between the bone portions 3, and can be formed at any position between the bone portions 3. The reason is that, for example, when the umbrella part 2 is printed with characters, designs, logos, etc., the formation of the ridge line forming part 11 at the center part distorts the printing of the characters and logos. In order to avoid this, it can be formed by being biased to an arbitrary position in the width direction of the umbrella portion 2 between the bone portions 3, that is, on the left or right side of the welded portion 7 for forming the bone portion 3. .

  In addition, as shown in FIG. 7, the gripping portion 4 is formed by superposing two long synthetic resin films each having a rectangular shape on the lower end side to form a desired bulging portion 4 a, and excluding the upper end. Adhere or weld the part within the range indicated by the phantom line, turn it over, and put the adhesive or welded part inside so that the edge part of the film is hidden inside, and it is a cylindrical gripping part that is safe and easy to touch 4 can be formed. Even if it is turned over, the bulging part 4a becomes a clasp part.

As shown in FIG. 8, the grip portion 4 formed in this way is attached to the lower surface side of the air chamber 5 formed by the second sheet 31. An air chamber is formed so that the upper end portion is formed on the outer side by about 8 to 10 mm, the upper end edge having a width of about 1 to 2 mm generated by the formation of the folded portion 9 is used as the mounting allowance 10 and the hole 8 is surrounded. The attachment state is stabilized due to the presence of the folded portion 9.
It should be noted that characters, brand logos, and the like can be appropriately printed on the umbrella part 2, the grip part 4, and the air chamber 5, as a matter of course.

Hereinafter, the manufacturing method of the folding umbrella 1 is demonstrated.
FIG. 9 shows a method for manufacturing the folding umbrella 1 according to the first embodiment of the present invention.
Step ST1:
A predetermined printing is performed on the fabric.
Step ST2:
The dough is cut to form the first sheet 21.
The dough is cut to form the second sheet 31.
At this time, the umbrella portion 2b located between the adjacent second bone portion forming portions 3b of the second sheet 31 is cut out, and the hole 8 is formed.

Step ST3:
The air introducing plug 6 is attached to the first sheet 21.
Further, the grip portion 4 is attached to the hole 8 of the second sheet 31.

Step ST4:
The first sheet 21 and the second sheet 31 shown in FIG. 3 are aligned and joined.
At this time, a space that becomes the bone portion 3 when air is introduced between each of the plurality of first bone portion forming portions 3a and the second bone portion forming portion 3b corresponding to the first bone portion forming portion 3a. It joins with the said 2nd bone part formation part 3b so that it may be formed.
Further, a portion where the first bone portion forming portion 3a near the outer periphery of the first air chamber forming portion 5a is not located and a second bone portion forming portion 3b near the outer periphery of the second air chamber forming portion 5b are located. The portion not to be joined is joined so as to form the air chamber 5 when air is introduced.
The joining in step ST4 is performed in a single process in the booth for bonding or welding.
The welding is performed, for example, by applying a high frequency electric field to the material to cause internal heat generation and welding.

Step ST5:
Radially extending ridge line forming portions 11 are formed on the umbrella portion 2 a of the first sheet 21.
When printing on the back surface, the ridge line forming unit 11 is configured to connect lines on both sides that are at an equal distance from the radially extending line of the umbrella part 2a near the center of the adjacent bone part 3, as shown in FIG. The part between the lines on both sides is joined and formed so as to be located on the back side of the umbrella part 2a. On the other hand, in the case of printing on the surface, the ridge line forming unit 11 connects the lines on both sides at the same distance from the radial line of the umbrella part 2a near the center of the adjacent bone part 3 between the lines on both sides. It is formed by joining so that the portion in between is located on the surface side of the umbrella part 2a. By forming the ridge line forming part 11 in this way, the bone part 3 is directed toward the grip part 4 side (lower side). Be pulled.

As described above, according to the folding umbrella 1, the central air chamber 5 is joined to the substantially circular first air chamber forming portion 5a and the second air chamber forming portion 5b along the outer peripheral direction. Is formed. Therefore, when air is introduced, the outer surface of the air chamber 5 forms a symmetrical curved surface, which can be used as the upper surface portion of the umbrella portion 2.
In the folding umbrella 1, the volume of the air chamber 5 when air is introduced is equal to or less than the total volume of the bone 3. Therefore, at the time of use, the tip of the bone part 3 is easily inclined downward, and an umbrella shape is easily formed.

Moreover, in the folding umbrella 1, as shown in FIG.1, FIG.2, FIG.6, since the ridgeline formation part 11 was formed, the bone part 3 can be inclined to the holding part 4 side, and an umbrella type | mold can be made smoothly. Can be formed.
At this time, a smooth but umbrella-shaped line is formed by the above-described curved surface of the air chamber 5 and the above-described inclination of the bone portion 3 as shown in FIGS.

[Second Embodiment]
10 and 11 are diagrams for explaining the folding umbrella 101 according to the second embodiment of the present invention.
As shown in FIG. 12, the folding umbrella 101 is formed by overlapping a first sheet 121, a second sheet 131, and a third sheet 141.
In the folding umbrella 101, the first sheet 121 and the second sheet 131 form the bone part 3, and the third sheet 141 forms the umbrella part 2.
In FIG. 10, the hatched portion is a portion to be cut off.

The first sheet 121 includes a substantially circular first air chamber forming portion 5a forming a part of the air chamber 5, and a bone portion 3 extending radially from the outer periphery of the first air chamber forming portion 5a at equal intervals. A plurality of first bone portion forming portions 3a forming a part of the first bone portion forming portion, and a plurality of umbrella portions 2a positioned between the adjacent first bone portion forming portions 3a.
An air introducing plug 6 is provided in the center of the first air chamber forming portion 5a.

The second sheet 131 includes a substantially circular second air chamber forming portion 5b that forms a part of the air chamber 5, and a bone portion 3 that extends radially from the outer periphery of the second air chamber forming portion 5b at equal intervals. And a plurality of second bone portion forming portions 3b that form a part thereof.
The first air chamber forming portion 5a and the second air chamber forming portion 5b have substantially the same size and shape.
A hole 8 communicating with the grip portion 4 is formed in the center of the second air chamber forming portion 5b.

The 3rd sheet | seat 141 has the some umbrella part 2a in the position corresponding to each edge | side of a regular hexagon.
Similarly to the first embodiment, the ridge line forming portion 11 is also formed in the umbrella portion 2a of the third sheet 141.

  A hole 8 communicating with the grip portion 4 is formed in the center of the second air chamber forming portion 5b.

Between each of the plurality of first bone portion forming portions 3a and the second bone portion forming portion 3b corresponding to the first bone portion forming portion 3a, a space that becomes the bone portion 3 is formed when air is introduced. As such, the second bone portion forming portion 3b is joined. The joining is performed by welding by heat, adhesion to become an adhesive, or the like. By the joining, a stripe-like joining line 7c as shown in FIGS. 5 and 6 is formed.
As shown in FIG. 6, the joint line 7b at the tip of the bone 3 is formed in an arc shape.

Further, a portion where the first bone portion forming portion 3a near the outer periphery of the first air chamber forming portion 5a is not located and a second bone portion forming portion 3b near the outer periphery of the second air chamber forming portion 5b are located. The part which does not carry out is joined so that the air chamber 5 may be formed at the time of air introduction. By the joining, an arc-like joining line 7a protruding toward the air chamber 5 as shown in FIGS. 5 and 6 is formed.
The joining lines 7a, 7b, and 7c are connected to draw a smooth curve.
The joining lines 7a, 7b, 7c are basically the same as those in the first embodiment.

  The thickness of the 3rd sheet | seat 141 which comprises the umbrella part 2 is 0.15 mm, for example, and the thickness of the 1st sheet | seat 121 and the 2nd sheet | seat 131 is 0.25-0.3 mm, for example. That is, by making the first sheet 121 and the second sheet 131 thicker than the third sheet 141, the bone part 3 and the air chamber 5 are formed to be strong (strong), and the umbrella part 2 is a thin film. To reduce the overall weight and maintain high durability.

  Further, even when the upper third sheet 141 forming the roof is used as a pattern, as shown in FIG. 11, a part of the umbrella 2a is made of a transparent film so that the front can be seen from the roof when the head winds. Can also be formed. In short, as long as the bone part 3 and the air chamber 5 are formed firmly, as the upper third sheet 141 forming the roof, a thin and lightweight printed material with various designs can be used as appropriate. is there.

  Further, according to the folding umbrella 101, the user can fold the third sheet 141 having the umbrella portion 2a by detachably fixing the third sheet 141 to the first sheet 121 and the second sheet 131. After purchasing the umbrella 101, the third sheet 141 can be removed and a new third sheet 141 provided with an umbrella portion 2a with another pattern can be attached. Thereby, various kinds of patterns can be enjoyed.

Hereinafter, a method for manufacturing the folding umbrella 101 will be described.
FIG. 12 shows a method for manufacturing the folding umbrella 101 according to the second embodiment of the present invention.
Step ST11:
A predetermined printing is performed on the fabric.
Step ST12:
The dough is cut to form the first sheet 121.
The dough is cut to form the second sheet 131.
At this time, the umbrella portion 2b positioned between the adjacent second bone portion forming portions 3b of the second sheet 123 is cut out, and the hole 8 is formed.
The dough is cut to form a third sheet 141.

Step ST13:
The air introducing plug 6 is attached to the first sheet 121.
In addition, the grip portion 4 is attached to the hole 8 of the second sheet 131.

Step ST14:
The first sheet 121 and the second sheet 131 shown in FIG. 3 are aligned and joined.
At this time, a space that becomes the bone portion 3 when air is introduced between each of the plurality of first bone portion forming portions 3a and the second bone portion forming portion 3b corresponding to the first bone portion forming portion 3a. It joins with the said 2nd bone part formation part 3b so that it may be formed.
Further, a portion where the first bone portion forming portion 3a near the outer periphery of the first air chamber forming portion 5a is not located and a second bone portion forming portion 3b near the outer periphery of the second air chamber forming portion 5b are located. The portion not to be joined is joined so as to form the air chamber 5 when air is introduced.
The joining in step ST14 is performed in a single process in the booth for bonding or welding.

Step ST15:
Cut unnecessary parts of each sheet.

Step ST16:
Radially extending ridge line forming portions 11 are formed on the umbrella portion 2 a of the first sheet 121.
As shown in FIG. 6, the ridge line forming portion 11 has lines on both sides that are at an equal distance from a line extending radially from the umbrella portion 2 a near the center of the adjacent bone portion 3 between the lines on both sides. It is formed by joining so that the portion is located on the back side of the umbrella portion 2a.
By forming the ridge line forming part 11 in this way, the bone part 3 is pulled toward the grip part 4 side (lower side).

  Further, in the introduction / exhaust of air (air), the air introduction plug member 6 with a check valve has been described. However, the present invention is not limited to this, and the air introduction plug member 6 and the air discharge plug member are provided separately. Is also good. In any case, it goes without saying that the various configurations described above can be added as appropriate without departing from the spirit and gist of the present invention.

  In short, the pneumatic folding umbrella according to the present invention includes an umbrella part formed of a synthetic resin film, an umbrella part, an air chamber, and a plurality of bone parts of at least two circular or polygonal synthetic resin films. Are formed by adhering or welding along the outer circumference of the shape line of the air chamber and the bone portion, and an air introduction plug is provided at the top of the air chamber, and a gripping portion is attached to the lower portion and attached. In the width direction of the umbrella part positioned between the bone parts, the ridge line forming line is welded and formed over a required angular width, whereby each bone part becomes an inclined ridge line, and as a whole, a mountain having a required gradient. It is shaped and can be used practically by maintaining the umbrella shape in a stable state, and in forming each bone part and the air chamber by bonding or welding, a communicating part between the bone part and the air chamber and By the end leading to the umbrella portion surrounding parts are formed in an arc shape, since no or torn peeling adhesive or welding unit at a concentration of pressure by the air introduction can be widely used as an umbrella portable.

DESCRIPTION OF SYMBOLS 1,101 Folding umbrella 2 Umbrella part 3 ... Bone part 5 ... Air chamber 4 ... Grip part 6 ... Air introduction plug 8 ... Hole 11 ... Ridge formation part 21 ... First sheet 31 ... Second sheet 121 ... First 1 sheet 131 ... 2nd sheet 141 ... 3rd sheet

Claims (4)

It is possible to form an air chamber located in the center, and a plurality of bone portions and gripping portions that communicate with the air chamber and extend radially, and are carried in a folded state when not in use. A pneumatic folding umbrella that introduces air into the bone part and the grip part to form an umbrella shape,
A substantially circular first air chamber forming portion that forms a part of the air chamber, and a plurality of portions that extend radially from the outer periphery of the first air chamber forming portion and form a part of the bone portion A first sheet having a first bone portion forming portion and a plurality of umbrella portions located between each of the adjacent first bone portion forming portions;
A substantially circular second air chamber forming portion that forms part of the air chamber, and a plurality of portions that extend radially from the outer periphery of the second air chamber forming portion at an equal interval to form part of the bone portion A second sheet having a second bone formation part;
A gripping part communicating with the second air chamber forming part,
Each of the plurality of first bone part forming parts forms a space that becomes the bone part when air is introduced between the first bone part forming part and the second bone part forming part corresponding to the first bone part forming part. So that it is joined to the second bone part forming part,
A portion where the first bone portion forming portion in the vicinity of the outer periphery of the first air chamber forming portion is not located, and a portion where the second bone portion forming portion in the vicinity of the outer periphery of the second air chamber forming portion is not located. Are joined to form the air chamber when air is introduced,
At the time of air introduction, each of the plurality of umbrella parts is arranged such that the bone part formed by the first bone part forming part and the second bone part forming part is inclined toward the grip part side. A pneumatic folding umbrella with a radially extending ridge. The pneumatic folding umbrella according to claim 1, wherein the second air forming part has substantially the same size and shape as the first air forming part. A joint line between the first bone portion forming portion and the second bone portion forming portion of one of the adjacent bone portions;
A joint line between the first bone portion forming portion and the second bone portion forming portion of the other adjacent bone portion;
The portion between the adjacent bone portions, the portion near the outer periphery of the first air chamber forming portion where the first bone portion forming portion is not located, and the vicinity of the outer periphery of the second air chamber forming portion The joining line with the part in which the 2nd bone part formation part is not located is united, and the smooth joining line projected in the shape of an arc on the air chamber side is formed. Pneumatic folding umbrella. The joint line between the first bone part forming part and the corresponding second bone part forming part is:
The pneumatic folding umbrella according to any one of claims 1 to 4, wherein the pneumatic folding umbrella is formed in an arc shape protruding toward a distal end side of the bone part.