JP4754524B2 - Darts in flight - Google Patents

Description

  The present invention relates to a dart flight in which a point, a barrel, a shaft, and a flight are sequentially connected to each other so that the shaft and the flight can be easily connected and the four sides of the wings are spread precisely 90 °.

  Recently, so-called darts that throw arrows toward a predetermined target have been actively performed with the diversification of hobbies. There are various types of darts such as darts for official competitions as well as general darts that are games. The dart is composed of a tip part called a tip (tip), a steel grip part called a barrel, a shaft part connecting the wing and the barrel called a shaft, and a wing called a flight. Yes. In this case, the point made of iron is called a hard dart, the synthetic resin is called a soft dart, and these are collectively called darts. In addition, the point at the leading end and the flight at the trailing end are easily damaged by receiving an impact that stabs on the board when thrown or a falling impact that falls on the floor. For this reason, they are also sold as replacement parts.

Here, as a conventional flight, a thing made of synthetic resin has been mainly used in the past using a bird feather. As the shape of the replacement flight, for example, as shown in A, B, C, D of FIG. 5 and A and B of FIG. 6, four film sheets a having a predetermined shape as a whole (a1) , A2, a3, a4) formed and folded at b are overlapped as shown in FIG. 5D, and an adhesive is applied to the mating portion. It is welded by heat and pressure from 16 two directions. In this way, a configuration of a folded flight c in which four upper and lower, left and right wings c ′ are formed. In addition, the sales package (completed form) of this conventional flight c is flattened so that four blades c 'are folded (see C in FIG. 5), because pressure is applied from 16 directions, and packaging bags and the like. (For example, see Non-Patent Document 1).
"Harrows Darts Technology 2006 Catalog"

フトｄの末端部に十字切り込みした細幅な挿入用スリット（溝）ｅとに中心合せをしながら差し込むものである。このとき、同時に四方の羽ｃ′と十字スリットｅも合致させねばならず極めて面倒な挿入作業を強いられる。なお、スリット入口部分を広口にしてフライト挿入を容易にするタイプも知られているが、この形状ではシャフト自体が限定され一般的ではなくなり、且つ羽の離脱も起き易い。For this reason, as shown in A and B of FIG.

It is inserted while being centered in a narrow insertion slit (groove) e that is cross-cut into the end portion of the foot d. At this time, the four wings c 'and the cross slits e must be matched at the same time, and an extremely troublesome insertion work is forced. A type that facilitates flight insertion by making the slit entrance portion wide is also known, but in this shape, the shaft itself is limited and becomes uncommon, and wings are easily detached.

Further, even if the four wings c ′ are opened at right angles to each other , the wings have a structure in which four flat film sheets are stacked. , It can not be opened at right angles to each other by bending with fingers . Therefore, if the four wings c ′ are thrown in a distorted shape that does not open at right angles to each other , the wings may not rotate to draw a desired parabola due to rotation or the like. It is a problem.

In view of the above circumstances, with integrally projected in advance in all directions so as to be perpendicular to each other four blades, the two sheets of facing to that blade end, a stepped portion is inserted into the shaft end of the slit The object of the present invention is to provide a dart flight that solves the above-mentioned problems by arranging the protrusions for sharpening the opposing wing tips of the remaining two wings and guiding them to the slit .

In order to solve the above-mentioned problem, the invention according to claim 1 is a dart flight that is detachable from the shaft, and includes four wings arranged at one end with an inclined surface facing the slit side of the shaft end. The two wings are integrally projected in four directions at right angles to each other, and of the four wings, the two wings facing each other across the central axis in the longitudinal direction of the shaft have inclined surfaces of the two wings. In order to guide the wing to the slit at the shaft end, the stepped portion is formed by adding an arc-shaped cut to the inclined end, which is the engaging portion , while the wings other than the two wings are inclined. It is characterized by being formed as a convex part.

Further, the invention according to claim 2 is the flight according to claim 1, characterized in that a beam projection for holding a right angle over two adjacent wings is provided in the middle in the longitudinal direction of each wing. To do.

  In this way, the darts flight has four wings each projecting a slanted surface for slit insertion at one end and projecting at right angles, and at the tip of the four wings converging at one point, By forming a stepped portion by making an arc-shaped cut that facilitates insertion of the slit groove at the inclined tip of the two opposing blades, a slit guide convex portion having a sharp inclined tip of the two opposing blades is formed. The For this reason, when inserting a flight into a cross-shaped slit cut at the shaft end, even if the groove width of the slit is narrow, the guide convex portion of the two blade ends that are the tip of the flight is aligned with the center position, and in this state All you have to do is insert the flight into the slit side and insert it into the wings of the cross slit every two wings (because four wings are not inserted into the four slits at once), so you can insert the flight smoothly. .

In addition, the four wings of this flight are integrally formed and protruded in four directions so as to be perpendicular to each other, and provided with a right-angle holding beam protrusion over two adjacent wings in the middle in the longitudinal direction of each wing. Therefore , when the beam protrusion reinforces the wing and throws the dart, the wing of the flight is not distorted.

  According to the present invention, when a flight of a four-blade structure is inserted into the cross-shaped slit at the shaft end, a step portion is provided at the opposite two blade ends at the inclined tip of the flight, and the other two blade tips are guided by the projections. By adopting the portion, it is possible to easily insert a flight simply by aligning the guide convex portion and the center of the slit, thereby facilitating flight exchange during the dart game. Moreover, this flight itself has a beam projection for holding a right angle in the middle part of the wing, and the four wings are integrally molded and fully reinforced, and each wing keeps a right angle, so when it is thrown into a dart Wings will not be distorted and it will fly straight in the desired direction and the best game play or competition game will be played.

  In addition, since each wing of the flight is provided as an integral molding and does not take the reinforcement of pasting as in the prior art, defects such as peeling of the adhesive surface during use are eliminated.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, the dart flight of the present invention will be described with reference to the drawings of the embodiments.

  1 to 4 show an embodiment of the present invention. 1 is a flight body that has four wings 3 with an inclined surface 2 that weakens the insertion and wind resistance at one end, and is filled with synthetic resin in a mold that has wings formed on all sides, and is perpendicularly projecting. At the tip of the four blades 3 of the flight body 1, an inclined notch 4 is formed at the inclined tip 3a of the two opposing wings 3 to form a slit step 5 and the remaining facing. The inclined tip 3 a of the two blades 3 is used as a flight 7 with the slit insertion guide convex portion 6. Reference numeral 8 denotes a right-angle holding beam protrusion that swells over both wing surfaces at the center of each intermediate portion of the four-blade 3.

  Now, this operation will be described. When the flight 7 is inserted into the cross-shaped slit 12 formed at the end of the shaft 11 and having an appropriate depth, first, the two guide protrusions 6 pointed at the center of the tip of the flight 7 are pointed. When the flight 7 is pushed to the shaft side in this state, the guide convex portion 6 is inevitably fitted into the center receiving hole portion 12a of the slit 12 and reaches the end of the slit.

  What is necessary is just to grab the barrel 15 of the darts 13 formed in this way (the point 14, the barrel 15 and the shaft 11 are integrated in advance by appropriate screw connection) and toss it appropriately. At this time, since each wing 3 projecting in the four directions of the flight 7 is integrally connected with the beam projection 8, the wing right angle does not collapse even if vibration caused by throwing or the like occurs. You can fly while drawing the desired parabola (stable dart flying). In addition, when selling, put it in a special case so that it does not lose its shape when it is carried.

  It is a slope view which shows the Example of the dart of this invention.   In the description showing the flight section, FIG. A is a front view, FIG. B is a side view, and FIG. C is a front view.   In the explanation of the flight tip, FIG. A is a perspective view of a stepped portion, and B is a perspective view of a pointed guide projection.   In the description of the shaft, FIG. A is a perspective view, and FIG. B is a rear end view.   In the description of the conventional flight, FIG. A is a plan view, FIG. B is a perspective view, FIG. C is a front view, and FIG. D is an explanatory diagram in which four film-shaped feathers are stacked.   In the explanation of the front end portion of the flight, FIG. A is a perspective view and FIG. B is a front view.   It is a perspective view of the shaft.

Explanation of symbols

ｄ シャフト
ｅ スリット2 Inclined surface 3 Wings 4 Notch 5 Stepped portion 6 Guide projection 7 Flight 8 Beam projection 11 Shaft 12 Slit 13 Darts 14 Point 15 Barrel 16 Direction of force 3a Inclined tip 12a Center receiving hole a Conventional shape of a predetermined wing Film sheet b Folding line c Conventional flight c 'Conventional flight feather

d Shaft e Slit

Claims (2)

A flight freely dart detachable from the shaft, the four feathers HSS an inclined surface at one end facing the slit side of the shaft end, while integrally projecting in four directions so as to be perpendicular to each other, the 4 Of the two wings, in two wings facing each other across the central axis in the longitudinal direction of the shaft, by adding an arc-shaped cut to the inclined end where the inclined surfaces of the two wings are engaged A dart flight characterized in that a stepped portion is formed, and on the other hand, an inclined end of a wing other than the two wings is formed as a convex portion for guiding the wing to a slit at the shaft end . The dart flight according to claim 1, wherein a right-angle holding beam protrusion extending between two adjacent wings is provided in the middle in the longitudinal direction of each wing.

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