JP2008029609A - Folded-paper airplane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the edges of a folded-paper airplane fuselage folded in half through a central fold line from becoming apart. <P>SOLUTION: A folded-paper airplane 10 is manufactured by inwardly folding the central fold line 12 of a folding paper sheet 21 having folded triangle portions at left and right side portions thereof to make a fuselage 13 and outwardly folding fold lines 14 for wings in its left and right portions to make left and right wings 16. A first transverse fold line 23 is formed such that it intersects the central fold line perpendicularly and intersects the fold lines for wings. Tilting lines 24 extending in the middle of the angles formed by the central fold line and the first transverse folding line 23 are respectively formed at the left and right sides of the central fold line. The left and right tilting lines 24 are pulled apart from each other in a state where the fuselage is formed and the tip end portion of the central fold line is folded up onto the first transverse folding line 23 such that they confirm to each other. The paper sheet is reversely folded in two through a second transverse fold line 26 at the folded-up tip end portion of the central fold line and the doubled tip end of the paper sheet is further folded through the first transverse fold line to cover the tip end edge of the fuselage. Thereafter, the paper sheet is outwardly folded through the wing fold lines intersecting the first transverse fold line to prevent the recovery of the paper sheet covering the tip end of the fuselage. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flyable origami airplane composed of a square origami and a required folding.

Conventionally, origami airplanes form a central fold line that bisects the center of a rectangular origami, and the folds for wings are parallel to or slightly inclined to the left and right of the center fold line. A line is formed. Then, the origami is folded into a valley through the central fold line to form a barrel on the left and right of the central fold line, and further to the trunk by fold-folding through the wing fold line on the left and right The left and right wings are made. On the other hand, before forming the body part by folding the origami in half, the front edges of the left and right wing parts are inclined by triangularly folding both sides of the center fold line on the tip side with respect to the center fold line. Yes. In this way, an origami airplane is obtained in which the central fold line is a valley fold and the trunk is below the left and right wings. And in such an origami airplane, the origami airplane is made to fly by grasping the trunk | drum and pushing out and releasing the origami airplane to the front end side of the center folding line. In recent years, there has also been proposed a method for producing a tail wing having a rudder function and obtaining a satisfactory flight distance and flight time (see, for example, Patent Document 1).
JP 2003-159484 A (specifications [0002] to [0004], FIG. 5)

However, in the conventional origami airplane, after folding the origami in two through the central fold line, the left and right wings that continue to the trunk are produced by folding the paper through the left and right wing folding lines. Therefore, if the body part folded in half through the center fold line opens, the crossing angle of the left and right wing parts that continue to the body part also changes, and the flight distance and flight time that satisfy you There was a problem that could not be obtained. In order to eliminate this point, the body parts folded in two through the central fold line are adhered to each other using an adhesive, or the part constituting the body part is pasted using an adhesive tape or the like. It is conceivable to prevent the trunk from opening. However, in such a case, materials other than origami such as adhesive and adhesive tape are required, and there is a problem that a paper airplane cannot be easily manufactured.
The objective of this invention is providing the origami airplane which can prevent the front-end | tip of the trunk | drum folded in half via the center folding line opening.

  In the invention according to claim 1, as shown in FIG. 1, a central folding line 12 that bisects the origami 21 is formed on a square origami 21, and the central folding line is perpendicular to the tip of the central folding line 12. The left and right sides of the center fold line 12 are triangularly folded so that the left and right edges of the origami 21 divided by 12 are aligned with the center fold line 12, and the origami 21 is valley-folded via the center fold line 12 to the center. The body 13 is formed on the left and right sides of the fold line 12, and both sides of the central origami 12 are mountain-folded via the wing fold lines 14 and 14 on the left and right of the center fold line 12, respectively, and the front end is formed by triangular folding. This is an improvement of the origami airplane that produces the left and right wings 16, 16 that are inclined.

  The characteristic configuration is that the first horizontal fold line intersects with the wing fold lines 14 and 14 between the center fold line 12 and the wings 16 and 16 at the front end side of the center fold line 12. 23, and the inclined tips of the wings 14 and 14 extend from the intersection of the central fold line 12 and the first horizontal fold line 23 to the middle of the angle formed by the central fold line 12 and the first horizontal fold line 23. Inclined lines 24, 24, which end at the intersection with the edge, are formed on the left and right sides of the central fold line 12, respectively, and the origami 21 is valley-folded via the central fold line 12, so The left and right inclined lines 24, 24 are separated from each other in a state where the portion 13 is manufactured, and the central fold line 12 on the tip side is lifted from the intersection with the first horizontal fold line 23 so as to match the first horizontal fold line 23. Fold the left and right inclined lines 24, 24 and the left and right The folding paper 21 on the tip side of the central fold line 12 lifted via the second horizontal fold line 26 connecting the respective intersections with the inclined tip edges of the parts 16, 16 is folded in half, and the left and right slope lines 24, The origami 21 at the front end side of the central fold line 12 is folded via the first horizontal fold line 23 so that 24 is brought into contact with both sides of the body portion 13, and the front end edge of the body portion 13 is moved to the front end side of the central fold line 12. The wings 16 and 16 are formed by folding the both sides of the central fold line 12 through the wing fold lines 14 and 14 intersecting with the first horizontal fold line 23 and the folds 16 and 16 respectively. The origami 21 that covers the leading edge of the portion 13 is configured to be prevented from being restored.

  In the origami airplane according to the first aspect, as shown in FIG. 1 (f), the left and right inclined lines 24 are bent through the first lateral fold lines 23 so as to contact both sides of the trunk portion 13, 1 (g), the endless origami 21 on the front end side of the central fold line 12 between the left and right inclined lines 24 is connected to the front end edge of the body portion 13 formed on the left and right sides of the central fold line 12. Therefore, it is possible to effectively prevent the leading edge of the body portion 13 folded in two through the central fold line 12 from being opened by the origami 21 covering this portion. Then, as shown in FIGS. 1 (g) and 1 (h), the wing part 16 is produced by mountain folding through the wing fold line 14, and the first horizontal fold line 23 intersects with the wing fold line 14. Since it is bent at the portion, the left and right inclined lines 24 brought into contact with both sides of the body portion 13 can be prohibited from being separated from the body portion 13. For this reason, it can prevent that the front-end | tip of the trunk | drum 13 folded in half via the center folding line 12 opens, without using materials other than origami, such as an adhesive agent and an adhesive tape.

  In the origami airplane of the present invention, a first horizontal fold line that is orthogonal to the front end side of the central fold line and intersects the wing fold line is formed, and extends in the middle of the angle formed by the central fold line and the first horizontal fold line. Inclined lines are formed on the left and right sides of the center fold line, respectively, and the trunk is folded to separate the left and right inclined lines from each other and lift the center fold line on the tip side to match the first horizontal fold line. Fold the origami on the tip side of the center fold line lifted via the second horizontal fold line connecting the intersections of the left and right inclined lines and the inclined tip edges of the left and right wings. The left and right inclined lines are folded through the first horizontal fold line so as to contact both sides of the body part, the leading edge of the body part is covered with origami, and the wing fold line intersecting the first horizontal fold line is used. By folding the mountain and making the wings, Since it is configured to prevent restoration of origami covering the edges, covers the distal edge of the body portion by origami, it is possible to maintain that state. For this reason, it can prevent that the front-end | tip of the trunk | drum folded in half via the center folding line opens without using materials other than origami, such as an adhesive agent and an adhesive tape.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
The origami airplane 10 shown in FIG. 1 (i) is triangularly folded at the left and right ends of the center fold line 12 of the square origami 21 shown in FIG. 1 (a), and thereafter shown in FIGS. 1 (a) and 1 (b). As shown in FIG. 1 (g) and (h), the origami is folded in two through a central fold line 12 to produce a body portion 13 on the left and right sides of the central fold line 12, as shown in FIGS. The left and right wing parts 16 are produced by folding the both sides of the folded paper folded in two via the wing fold lines 14 on the left and right sides of the fold line 12, and the left and right wing parts 16 having the tip inclined by triangular folding. Here, as shown in FIGS. 1 (a) and 3 (a), the central fold line 12 is a line connecting the midpoints of a pair of shorter opposite sides of the basic rectangular origami 11 facing each other. There is a line that bisects this rectangle at its center. As shown in FIG. 1 (i), the wing fold line 14 is formed on the left and right of the center fold line 12 so as to be slightly inclined with respect to the center fold line 12. The wing fold line 14 may be parallel to the central fold line 12. Then, by folding the origami through the central fold line 12, the body portion 13 is formed on the left and right of the central fold line 12, and the mountain folds are further formed through the wing fold lines 14 on the left and right. As a result, left and right wing parts 16 that are continuous with the body part 13 are produced.

  A square origami 21 shown in FIG. 1A is produced by folding a plurality of times so that the total length of the fold line 12 at the center of the rectangular origami 11 serving as a reference shown in FIG. This is performed in order to set the center of gravity of the obtained origami airplane 10 to an appropriate position. More specifically, as shown in FIGS. 3A and 3B, first, the left and right edges of the leading edge of the rectangular origami 11 that is bisected by the central folding line 12 perpendicularly to the leading edge of the central folding line 12. The left and right sides of the center fold line 12 are triangularly folded so as to fit the center fold line 12 with a predetermined gap. At this time, it is preferable that the distance A between the leading edges on the left and right sides of the origami 11 that is triangularly folded across the center fold line 12 is 3 to 5 mm. Next, as shown by the solid line arrow in FIG. 3B and FIG. 3C, the center fold line 12 is placed so that the leading edge A of the center fold line 12 is placed on the base end side of the center fold line 12. The rectangular origami 11 is folded at a base fold line 17 orthogonal to 12. At this time, as shown in FIG. 3B, the base fold line 17 is adjusted so as to be in the vicinity of the side edge of the origami 11 that is triangularly folded. In this way, the square origami 21 in FIG. 3C is obtained, and this square origami 21 is then turned over as shown in FIG. 3D, and the left and right ends of the center folding line 12 are triangular. It is folded.

  FIG. 2 shows a procedure in which the left and right ends of the center folding line 12 of the square origami 21 are triangularly folded. This is performed in order to make the center of gravity of the obtained origami airplane 10 more appropriate. That is, the square origami 21 in FIG. 2A is triangularly folded three times on the left and right sides at the front end side of the central fold line 12. More specifically, as shown in FIG. 2A, the right and left ends of the leading edge of a square origami 21 that is divided by the central folding line 12 perpendicularly to the leading edge of the central folding line 12 are folded in the center. The left and right sides of the central fold line 12 are triangularly folded so as to be aligned with the line 12 with a predetermined interval, and the first fold line 22a is attached by returning one end. At this time, it is preferable that the distance B between the leading edges on the left and right sides of the square origami 21 that is triangularly folded across the central fold line 12 is 3 to 5 mm. Then, as shown in FIG. 2 (b), the first fold 22a is triangularly folded so that the side edge of the square origami 21 is aligned, and one end is returned to attach the second fold 22b. Subsequently, as shown in FIG. 2 (c), the second fold 22b is triangularly folded so that the side edge of the square-shaped origami 21 is aligned, and one end is returned to attach the third fold 22c.

  Thereafter, as shown in FIG. 2 (d), the left and right sides of the square origami 21 are triangularly folded via the second fold 22b, and the valley folded through the third fold 22c is pulled back. Fold it. Thereafter, as shown in FIGS. 2D and 2E, the left and right sides of the leading edge of the square-shaped origami 21 divided by the center fold line 12 through the first fold line 22a become the center fold line 12. Fold it so that it fits. In this way, the square origami 21 serving as a reference obtained by triangularly folding the left and right ends of the front end of the central fold line 12 is later valley-folded via the central fold line 12, and the body part is formed on the left and right sides of the central fold line 12. As shown in FIG. 1 (i), both sides of the central origami are mountain-folded through the wing fold lines 14 on the left and right of the central fold line 12, and the tip is inclined by triangular folding. The left and right wing parts 16 are produced.

  As shown in FIG. 1 (a), a first horizontal fold line 23 orthogonal to the central fold line 12 is provided on the front side of the central fold line 12 of a square origami 21 in which the left and right ends of the square are folded. Is formed. The first horizontal fold line 23 is formed with a predetermined distance d from the leading edge of the square origami 21, and the predetermined gap d is a width C at the leading edge of the square origami 21 (FIG. It is preferably about 1/8 of)). Therefore, as shown in FIG. 2 (f), the first horizontal fold line 23 is returned after being folded once so that the front end of the folded paper 21 is matched with the side edge of the folded paper. A reference line 25 is formed, and as shown in FIG. 2 (g), the reference line 25 is further folded back so that the front end of the origami 21 is aligned with the reference line 25, whereby a predetermined distance from the leading edge of the square origami 21 is obtained. It is preferable to form the first horizontal fold line 23 with a space d. The origami 21 after the first horizontal fold line 23 is thus formed is turned over and used as shown in FIG.

  As shown in FIG. 1A, the left and right ends of the center folding line 12 are triangularly folded, and the origami 21 after the first horizontal folding line 23 is formed has the first horizontal folding line 23 formed. After that, a valley is folded through a central folding line 12 as indicated by a solid line arrow. Next, as shown in FIG. 1B, a pair of inclined lines 24 starting from the intersection of the center fold line 12 and the first horizontal fold line 23 are formed on the left and right sides of the tip of the center fold line 12. The The inclined line 24 extends from the intersection of the central fold line 12 and the first horizontal fold line 23 to the middle of the angle formed by the central fold line 12 and the first horizontal fold line 23, and the inclined tip of the wing part 16. They are formed on the left and right of the center folding line 12 with the intersection with the edge as the end point. As shown in FIGS. 1C and 1D, the left and right inclined lines 24 are separated from each other and the first horizontal fold line is formed while the reference origami 21 is folded in two via the central fold line 12. The center fold line 12 on the tip side from the intersection with 23 is lifted and bent so as to contact the first horizontal fold line 23. Thereafter, as shown in FIG. 1 (e), the central fold lifted through the second horizontal fold line 26 connecting the respective intersections of the left and right inclined lines 24 and the inclined tip edges of the left and right wings 16 is provided. The tip end side of the line 12 is folded in half.

  As shown in FIG. 1 (f), the left and right inclined lines 24 are bent via first lateral fold lines 23 so as to contact both sides of the body portion 13. And as shown in FIG.1 (g), the front-end edge of the trunk | drum 13 formed in the right and left of the center fold line 12 in the front end side of the center fold line 12 which exists between the right-and-left inclination lines 24 is shown. Cover with endless origami. Then, as shown in FIGS. 1 (g) and (h), both sides of the origami are mountain-folded via wing fold lines 14 on the left and right of the central fold line 12 to produce the wing part 16. At this time, it is preferable that the rear end edge E of the central folding line 12 coincides with the edge of the wing part 16 or is slightly hidden by the wing part 16. The first horizontal fold line 23 intersects with the wing fold line 14 in the middle between the central fold line 12 and the tip edge of the wing part 16, so when the wing part 16 is manufactured, the first A situation in which the left and right inclined lines 24 which are bent at a portion where the fold line 23 intersects the wing fold line 14 and brought into contact with both sides of the body portion 13 is separated from the body portion 13 is prohibited. Thereafter, the wing portion 16 is formed so as to be orthogonal to the trunk portion 13 to obtain the origami airplane 10 shown in FIG.

  In the origami airplane 10 configured as described above, as shown in FIG. 1 (f), the left and right inclined lines 24 are bent through the first lateral fold lines 23 so as to contact both sides of the trunk portion 13, and FIG. As shown in (g), the end edge of the body 13 formed on the left and right of the central fold line 12 is formed by the endless origami 21 on the front end side of the central fold line 12 existing between the left and right inclined lines 24. Since it covers, it can prevent effectively that the front-end edge of the trunk | drum 13 folded in two via the center folding line 12 is opened with the origami 21 which covers this part. Then, as shown in FIGS. 1 (g) and 1 (h), the wing part 16 is produced by folding the mountain via the wing fold line 14, and the first horizontal fold line 23 intersects with the wing fold line 14. The right and left inclined lines 24 bent at the part and brought into contact with both sides of the body part 13 are prohibited from being separated from the body part 13. For this reason, it is possible to prevent the front end of the body part 13 folded in two via the central fold line 12 from being used without using materials other than origami such as adhesives and adhesive tapes. Therefore, in the origami airplane 10 shown in FIG. 1 (i), the intersecting angles of the left and right wing parts 16 that are continuous with the trunk part 13 do not change, and a satisfactory flight distance and flight time are obtained. Obtainable.

It is a figure which shows the preparation procedure in the second half of the origami airplane of embodiment of this invention. The leading end of the origami is a diagram showing a triangular folding procedure. It is a figure which shows the procedure in which the origami is produced with rectangular origami.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Origami airplane 12 Center folding line 13 Trunk part 14 Wing folding line 16 Wing part 21 Square origami 23 1st horizontal folding line 24 Inclined line 26 2nd horizontal folding line

Claims (1)

A central fold line (12) that bisects the origami (21) is formed on a square origami (21), and is perpendicular to the tip of the central fold line (12) by the central fold line (12). Triangularly fold the left and right sides of the central fold line (12) so that the left and right edges of the origami (21) divided in half are aligned with the central fold line (12). The origami (21) is valley-folded to produce the body (13) on the left and right of the central fold line (12), and the wing fold lines (14, In the origami airplane for producing the left and right wings (16, 16) whose tip is inclined by the triangular fold by folding the both sides of the central origami (12) through 14),
It intersects perpendicularly at the tip side of the central fold line (12) and intersects the wing fold line (14, 14) between the central fold line (12) and the tip edge of the wing part (16, 16). A first horizontal fold line (23) is formed,
The blade extends in the middle of the angle formed by the central fold line (12) and the first horizontal fold line (23), starting from the intersection of the central fold line (12) and the first horizontal fold line (23). Inclined lines (24, 24) with the intersections with the inclined tip edges of the parts (14, 14) as end points are formed on the left and right of the central fold line (12), respectively.
In the state where the origami (21) is valley-folded through the central fold line (12) and the body (13) is formed on the left and right of the central fold line (12), the left and right inclined lines (24, 24) are separated from each other and folded so that the central fold line (12) on the tip side from the intersection with the first horizontal fold line (23) is lifted to match the first horizontal fold line (23),
The center of the center lifted through a second horizontal fold line (26) connecting the intersections of the left and right inclined lines (24, 24) and the inclined tip edges of the left and right wings (16, 16). Fold the origami (21) on the tip side of the fold line (12),
The origami on the front end side of the central fold line (12) via the first horizontal fold line (23) so that the left and right inclined lines (24, 24) are brought into contact with both sides of the body (13). 21) is folded to cover the front edge of the body (13) with the origami (21) on the front end side of the central fold line (12),
The wings (16, 16) are folded at both sides of the central fold line (12) via the wing fold lines (14, 14) intersecting the first horizontal fold line (23). An origami airplane configured to prevent the origami (21) covering the tip edge of the body (13) from being produced.

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