JP2005273988A - Arrow for japanese archery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an arrow having stable performance and excellent appearance like a natural bamboo so that the flying distance of the arrow can be increased or the arrow can be flown stably. <P>SOLUTION: An arrow shaft body is formed mainly of a fiber-reinforced resin or a metal. A decorative layer with a color similar to that of the natural bamboo is formed on the outside of the arrow shaft body, a linear pattern with a color in the same group as that of the decorative layer and having a difference in density is formed on the outside of the decorative layer, and a transparent protective layer capable of viewing the decorative layer and the linear pattern is formed on the outside of the linear pattern. The surface of the protective layer is smoothly formed in the longitudinal direction, and a large number of recessed and projected lines extending in the longitudinal direction are one of the linear pattern and the protective layer are circumferentially formed on the surface of the protective layer by the combination of the linear pattern with the protective layer. In addition, a node pattern with the color same as that of the decorative layer and a low brightness is formed on the outside of the decorative layer at a specified longitudinal position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to improvements in archery arrows.

  Conventionally, arrows for archery have moderate bending rigidity, stickiness and waist, and are superior in appearance and texture, so that advanced users prefer natural yatake. And the arrows used for archery are required to have uniform performance and quality in order to aim accurately with multiple arrows. In order to extend the flying distance of the arrows, it is necessary to reduce the resistance, and in order to hit the target accurately, it is necessary to make the arrows released from the bow fly in a stable posture.

By the way, the arrows made of conventional natural bamboo hardly have the same thickness and outer diameter, and the bending rigidity and strength tend to vary greatly. In addition, in order to prevent variations in dimensions and the like, a bamboo-clad arrow in which an outer skin of arrow bamboo is bonded to the outside of a duralumin or carbon pipe is known (for example, see Patent Document 1).
JP, 2001-108400, A Aluminum arrow is also known.

However, the arrow using the conventional natural bamboo or the bamboo tension arrow does not provide an arrow with a stable performance, and has a drawback that the strength and the appearance are easily varied and cannot be made constant. Even in the case of a bamboo-clad arrow in which the skin of arrow bamboo is bonded to the outside of duralumin or a carbon pipe, even if it is somewhat improved, it has the same problem.
Moreover, the aluminum arrow has a metal appearance, and an appearance like natural bamboo cannot be obtained.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an arrow having an excellent appearance that makes natural bamboo feel with stable performance. It is another object of the present invention to increase the flight distance of arrows or to enable stable flight.

In order to achieve the above-mentioned object, the present invention forms an arrow main body whose main material is made of fiber reinforced resin or metal, and a decorative layer of a color similar to the color of natural bamboo outside the arrow main body. A linear pattern is formed on the outer side of the decorative layer with a color similar to that of the decorative layer and with a color difference, and the decorative layer and the linear pattern are visible on the outer side of the linear pattern. A transparent protective layer is formed, the surface of the protective layer is formed smoothly in the axial length direction, and one or a combination of the linear pattern and the protective layer is formed on the protective layer surface in the axial length direction. The gist is that a large number of elongated ridges and grooves are formed in the circumferential direction.
Further, the present invention provides an arrow shaft main body whose main material is made of fiber reinforced resin or metal, a decorative layer having a color similar to natural bamboo is formed on the outer side of the arrow shaft main body, and the decorative layer A nodal pattern having the same color as the decorative layer and having a low lightness is formed at a predetermined position in the axial direction of the arrow axis on the outer side of the decorative layer, and the nodal pattern is gradually thinned from the darkly coated area and the darkly coated area. And an area sprayed so as to be thinned in a short range from the other end that has been applied deeply, and a decorative layer and a node pattern on the outside of the node pattern A transparent protective layer that can be visually recognized is formed, and the surface of the protective layer is formed smoothly from the decorative layer to the nodal pattern in the axial direction.
Further, the present invention provides an arrow shaft main body whose main material is made of fiber reinforced resin or metal, a decorative layer having a color similar to natural bamboo is formed on the outer side of the arrow shaft main body, and the decorative layer A nodal pattern having a color similar to that of the decorative layer and having a low brightness is formed at a predetermined position in the axial direction of the arrow axis on the outer side of the decorative layer, and the nodal pattern is gradually thinned from the darkly coated area and the darkly coated area. An area coated by spraying, and an area having the same color and high brightness as the decorative layer on the other end coated with darkness, and a decorative layer and a knot pattern on the outside of the knot pattern. The gist of the invention is that a transparent protective layer that can be visually recognized is formed, and the surface of the protective layer is formed smoothly from the decorative layer to the nodal pattern in the axial direction.
In addition, the gist of the present invention is that a prepreg or a paint is formed on the knotted pattern by a predetermined thickness.
Furthermore, the gist of the present invention is that the outer diameter after forming the protective layer is the largest outer diameter of the knot pattern formed from the middle or center of the arrow shaft.

According to the invention of claim 1, a main body made of a fiber reinforced resin or metal is used to form an arrow shaft main body, which can provide stable strength and performance, and a linear pattern on the outside of the decorative layer and a transparent pattern on the outside thereof. Since a protective layer is provided, the appearance of natural bamboo can be improved. Further, since the surface of the protective layer is formed smoothly in the axial length direction, the resistance during the flight of the arrow can be reduced. In addition, since many irregularities extending in the axial direction are formed on the surface of the protective layer in the circumferential direction, stable flight of the arrows becomes possible.
According to the invention of claim 2, a main body made of a fiber reinforced resin or metal is used to form an arrow shaft main body, which can provide stable strength and performance, and a nodal pattern on the outer side of the decoration layer and a transparent protection on the outer side. Since the layer is provided, the appearance of natural bamboo can be improved. Moreover, since the surface of the protective layer is formed smoothly from the decorative layer to the nodal pattern in the axial direction, the resistance of the arrow during flight can be reduced. In addition, when shooting an arrow, it is possible to prevent the end of the knot pattern from coming into contact with the hand and damaging the hand.
According to the invention of claim 3, the same effect as that of claim 2 can be achieved.
According to the fourth aspect of the present invention, since the prepreg or paint is formed on the knotted pattern portion with a predetermined thickness, the appearance can be further improved.
According to the invention of claim 5, the outer diameter after forming the protective layer is the largest in the outer diameter of the knot pattern formed from the middle part or the center of the arrow shaft, so that the appearance of the part can be made remarkable.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an arrow according to an embodiment of the present invention. An arrowhead 8 is fixed to the front end of the arrow shaft 1 by bonding or the like, a collar 5 is fixed to the rear end by adhesion or the like, and the blade 6 is divided into three equal parts around the circumference of the front of the collar 5. Are fixed by a kite string 7 and an adhesive, paint, or the like. The fixing part of the arrowhead 8 is preferably firmly fixed to the arrow shaft 1 by bonding or the like so that the arrowhead 8 is not removed during use. Usually, the length is fixed to 10 to 30 mm. good.
The arrowheads 8 and the collars 5 may be detachably attached to the arrow shaft 1 with screws or the like.

The main body layer of the arrow shaft 1 is formed by winding a fiber reinforced prepreg in which a reinforced fiber is impregnated with a synthetic resin such as a thermosetting synthetic resin. A reinforcing layer 9 is integrally formed on the main body layer with a fiber reinforced prepreg on the inner side of the tip of the arrow shaft 1 to reinforce the tip of the arrow shaft 1. However, the reinforcing layer 9 may not be provided as long as the necessary strength is secured in the main body layer of the arrow shaft 1. The reinforcing layer 9 can also be a layer for adjusting the weight balance. When adjusting the weight balance, it is preferable to wind a prepreg mixed with a material having a specific gravity of 10.0 or more or a metal having a specific gravity of 5.0 or more, such as tungsten having a specific gravity larger than that of the reinforcing fiber or synthetic resin of the main body layer. .
In some cases, an adjustment layer for adjusting rigidity or vibration is formed integrally with the main body layer in the middle portion of the arrow shaft 1 or the like. This adjustment layer may be formed alone or together with the reinforcing layer 9 in some cases.

On the arrow shaft 1, a decorative layer 2 having a color similar to a natural bamboo color (for example, a brown color, a yellow color, a green color of Hsinchu, or a bamboo skin color) is formed. A linear pattern 3 that can image a bamboo pattern (striped pattern) is formed on the outside, and a node pattern 4 that can image a bamboo node is formed at a predetermined position in the longitudinal direction of the arrow shaft 1. . However, only one of the linear pattern 3 and the nodal pattern 4 may be provided, or both may be omitted.
Although it is preferable in terms of appearance that the linear pattern 3 is applied to the outside of the knot pattern 4, it may be applied to the inside of the knot pattern 4.
Further, as shown in FIG. 7, the knot pattern 4 has a dark area 41 in which a color having a lightness lower than that of the decorative layer 2 is applied thickly (relatively more), and then is gradually blurred in a gradually longer range. The blur area 42 is applied by spray coating or the like, and the blur area 43 is applied so as to suddenly become thin and blurry within a short range from the other end of the dark area 41.
If a color similar to the decoration layer 2 and having a high brightness is applied to the lower layer of the blur area 43, the appearance as a knot pattern is improved. In this case, it is also possible to omit the blurred application.
A transparent protective layer is formed on the outermost layer.

FIG. 2 illustrates a method for manufacturing the arrow shaft 1. The mandrel M is made of metal, but the material can be arbitrarily selected.
The tip M1 is formed straight. By setting the straight length to about 50 mm to 200 mm, preferably 100 mm to 150 mm, the position that supports the front of the arrow in a posture where the arrow is held on the bow can be a straight position, so the middle part has a taper. Even in this case, it is possible to prevent the occurrence of positional errors due to the taper. Further, since there is no change in diameter due to the taper, the arrowhead 8 can be attached with high accuracy.
The intermediate part M2 is formed in a taper shape. The taper (rate) is preferably 1.5 / 1000 or less, or 1/1000 or less, and the air resistance balance during flight of the arrow can be optimized. Needless to say, the lower limit of the taper does not include straight, but is preferably 0.1 / 1000 or more, or 0.2 / 1000 or more. The length of the intermediate part M2 is preferably 50% or more of the total length of the arrow shaft 1. By increasing the length, it is possible to prevent an increase in air resistance due to a sudden change in diameter.
The base M3 is formed straight. The length of the straight is preferably 100 mm or more and 300 mm or less, and may be formed so that the entire length or part of the attachment position of the blade is straight.
Note that the tip portion M1 and the base portion M3 do not necessarily have to be completely straight, and may have a slight error or taper.

  After the prepregs P1 and P2 are wound around the mandrel M so that the prepreg P2 is disposed outside the prepreg P1, a not-shown fastening tape is wound, and then heated and fired by a conventional method, and then the mandrel M and the fastening tape are attached. Remove from the shaped arrow shaft 1.

As the prepregs P1 and P2, fiber reinforced prepregs obtained by impregnating reinforcing fibers such as glass fibers and carbon fibers with a synthetic resin such as an epoxy resin are used.
The axial length direction fiber oriented in the axial length direction of the mandrel M is formed by using a material having a tensile elastic modulus of 5000 kgf / mm ² (49000 N / mm ² ) or more and 10,000 kgf / mm ² (98000 N / mm ² ) or less. It can be made into an arrowhead body with bending rigidity and stickiness like natural bamboo.
As the prepreg P1 forming the inner layer, a prepreg in which woven fabrics or reinforcing fibers aligned in one direction are overlapped in the cross direction is used.
As the prepreg P2 forming the outer layer, a fiber reinforced prepreg in which reinforcing fibers are aligned in one direction is used, and the direction of the fibers is wound in the axial direction of the mandrel M.
The amount of resin impregnation of the prepregs P1 and P2 is 15% to 60% by weight, the prepreg P1 is in the range of 28% to 60% by weight, the prepreg P2 is in the range of 15% to 35% by weight. It is preferable to reduce the resin impregnation amount in order to improve the strength and reduce the weight.
The thicknesses of the prepregs P1 and P2 are arbitrary, but the prepreg P2 is relatively thinner than the prepreg P1 and the number of windings is increased (for example, the prepreg P2 is wound at a thickness of 0.08 mm or less and three or more layers are wound). Is preferable in forming the arrow shaft main body with less directionality and bending.
The prepregs P1 and P2 are used in an appropriate combination within the above range, but are not limited thereto, and any known material can be used in any combination. Further, the prepregs P1 and P2 may be arbitrarily divided and wound, for example, one layer at a time. Furthermore, prepregs having different third properties may be wound around the intermediate layer or the innermost layer.

FIG. 3 shows the arrow shaft 1 formed by the manufacturing method of FIG.
The arrow shaft main body layer has an inner layer 11 and an outer layer 12. The inner layer 11 has circumferential fibers or cross-direction fibers that intersect the axial length direction, and improves crushing and compressive strength. The crossing angle is ± 30 ° or more, preferably ± 45 ° or more (up to 90 °, that is, circumferential direction) with respect to the axial direction.
The outer layer 12 is a layer mainly composed of axial length fibers in which reinforcing fibers aligned in one direction are oriented in the axial length direction, and can improve the bending rigidity and reduce the weight. Further, the ratio of the inner layer 11 and the outer layer 12 to the total thickness of the main body layer is in the range of 50% ± 20%, more preferably in the range of 50% ± 15%. With this inner and outer layer configuration, it becomes possible to make the arrow shaft 1 with a moderate thickness and a bamboo-like bend and waist with excellent strength, stickiness and rigidity.
In addition, you may form another fiber reinforcement layer in the intermediate | middle layer between the inner layer 11 and the outer layer 12, an innermost layer, etc., and it is not limited only to the inner layer 11 and the outer layer 12, A main layer is the inner layer 11 and The outer layer 12 may be formed.

  The thickness of the arrow body layer is preferably 0.4 mm or more and 0.7 mm or less, the outer diameter is preferably 7 mm or more and 9 mm or less, and the weight is 20 grams or more per meter and 25 grams. The following is preferable. By setting it within this range, it is possible to make the arrow shaft 1 which has bending rigidity, stickiness and waist like the bamboo, and can be operated to shoot an arrow with the same feeling as the bamboo, in combination with the laminated structure.

The outer shape of the arrowhead body layer is straight at the tip, the middle part occupying most of the length (for example, longer than 50% and shorter than 80%) is tapered, and the base is straight. It is. The taper of the intermediate part is preferably 1.5 / 1000 or less, but may be 2.0 / 1000 or less. This shape makes it possible to stabilize the posture at the time of arrow axis flight by making the tip part the tip of the arrow (the arrowhead attachment side). If the air resistance behind the arrow axis is small, the force that moves backward behind the front part acts during flight, causing vibration and meandering behind the arrow axis, but slightly behind the arrow axis. By forming the air resistance so as to increase, the posture in the flight state can be easily maintained.
In addition, the front of the arrow shaft is smoothly formed in the longitudinal direction to reduce the air resistance, and the rear is roughened or uneven, so that the posture in the flying state can be easily maintained even if the air resistance is slightly increased. it can.
The arrow axis can be used with its tip and element reversed. It is also possible to taper the entire length or to make the entire length straight.

  By using the same thickness or the same number of windings of the fiber reinforced prepreg at the tip, middle, and base of the arrowhead main body layer, the weight balance of the arrowhead can be kept good, and the performance of the arrowhead Can be stabilized. In addition, combined with the outer tapered shape, the posture can be stabilized when flying in the direction of the arrow.

4 and 5 show another embodiment of the arrow shaft main body formation. A different part from FIG. 2, FIG. 3 is demonstrated.
The tip portion M1 of the mandrel M in FIG. 4 is formed to have a smaller diameter than the outer shape of the tip of the intermediate portion through a step or a steep taper portion. A reinforcing layer 9 is formed on the small diameter portion. Note that a plurality of steps or tapers may be formed at the tip, or a combination of tapers and steps may be used.
The reinforcing layer 9 is formed integrally with the main body layer by winding a prepreg sheet made of woven fabric, cross direction fibers, or unidirectionally aligned fibers. By mixing and winding a member having a high specific gravity such as metal or tungsten on the prepreg sheet, the weight of the arrow tip can be increased efficiently, and the weight balance of the arrow shaft can be adjusted.
The winding position of the reinforcing layer 9 is preferably the innermost layer, but can also be wound on an intermediate layer or an outer layer. However, it is preferable to form a straight shape along the outer shape so that the outer shape does not bulge.

Adjustment in which one or more layers of prepregs 4 mainly composed of fibers in the axial length direction are wound around the middle part (a part thereof) of the arrow shaft in the middle part of the arrow body layer (maximum deflection position or its vicinity) Layer 13 is formed integrally with the body layer. As a result, the bending rigidity of the intermediate portion can be increased and the arrow can be prevented from bending or vibrating when the arrow is released, so that the arrow can stably fly.
The adjustment layer 13 adjusts not only the rigidity but also the bending and vibration, and the reinforcing fiber is set in the circumferential direction and the crossing direction so that the transmission of the bending and vibration is alleviated, or the reinforcing fiber having a high elastic modulus. Use a material (for example, an elastic modulus of 40000 kgf / mm ² or more, that is, 392000 N / mm ² or more), or a material having a different vibration transmissibility from the main body layer (for example, a lighter specific gravity or a heavier material, a higher elongation than the main body layer) Material etc.) can be used, or these can be used in combination. By doing so, it is possible to prevent the arrow from being bent or vibrated when the arrow is released, so that stable flight of the arrow becomes possible. Further, the adjustment layer can prevent an increase in weight by being wound around a portion of the intermediate portion rather than the entire length.
The lamination position where the adjustment layer 13 is wound may be wound at an arbitrary position such as the innermost layer or the outermost layer in addition to the intermediate layer.
Further, it is preferable to form a straight shape along the outer shape so that the outer shape of the portion around which the adjustment layer 13 is wound does not bulge. For example, the outer shape can be obtained by winding a prepreg at a position of a bamboo knot pattern on the surface described later. For example, the adjustment layer 13 may be formed so as to bulge, and the outer shape of the adjustment layer winding position may be increased.
As a method of forming the adjustment layer 13 in a straight shape along the outer shape so that the outer shape of the wound portion does not bulge, the thickness is adjusted by the thickness of the winding layer, or a bulge having a large outer diameter after molding. The outer shape is smoothed by polishing the protruding portion or by repeatedly applying the paint with the adjustment layer having a thickness increase of about 0.2 mm or less.
Moreover, although the example which formed both the said reinforcement layer 9 and the adjustment layer 13 was demonstrated, it cannot be overemphasized that either one may be formed.
Other configurations of the embodiment of FIGS. 4 and 5 are the same as those of FIGS.

FIG. 6 shows an embodiment in which a pattern is provided on the surface of the main body layer of the arrow shaft 1. When the arrow shaft 1 is formed by winding a fiber reinforced prepreg, usually, the surface is polished smoothly with a polishing machine and then the base coating is performed. This undercoating can be omitted. Next, the decorative layer 2 is painted, and the linear pattern 3 and the knot pattern 4 are painted. Further, a transparent protective layer H is painted on the outermost surface.
Epoxy paint, urethane paint, or the like is used as the paint for the base coat, the decorative layer 2, the linear pattern 3, and the knot pattern 4. The coating method may be applied by a method such as ironing or spraying, or may be applied by a printing method such as screen printing, or a combination of these methods.

  The decorative layer 2 uses a color that images the color of natural bamboo. For example, a brown color, a yellow color, a green color of Hsinchu, or a bamboo skin color is used. The decoration layer 2 can be formed of a plurality of layers, or the decoration layer 2 can also serve as a base layer.

As shown in FIG. 6, the linear pattern 3 is a bamboo streak-like pattern that is long in the axial length direction, and as shown in FIG. The appearance can be
The color of the linear pattern 3 is a color similar to the color of the decoration layer. For example, when a brown color is used for the decoration layer 2, the same brown color and a color with different brightness are used. Specifically, when the brightness is divided into 12 levels with respect to the brightness of the decoration layer 2, a color having a brightness difference of 2 levels or more is used. In the embodiment of FIG. 6, a color that is lower (darker) than the brightness of the decorative layer 2 is used.
The formation method of the linear pattern 3 is such that a streak pattern is formed on the surface of the object to be coated by placing irregularities and scratches at the position where the object to be coated of the ironing rubber of the ironing device passes. To do. Further, a streak pattern may be formed by printing.
It is preferable that the width of the linear pattern 3 is as narrow as possible within a visible range of 1.0 mm or less, for example, a width in the range of 0.5 mm to 0.01 mm. The thickness is preferably in the range of 1 to 100 microns, or 5 to 100 microns.

As shown in FIG. 6, the knot pattern 4 is formed at one or a plurality of locations in a predetermined range in the axial direction of the arrow shaft 1.
The color of the knot pattern 4 is similar to the color of the decorative layer 2 and is lower (darker) than the brightness of the decorative layer 2. Then, a dark area 41 that is relatively thickly applied in the axial length direction by spray painting or the like, and then a blur area 42 that is applied by spray paint or the like so as to be gradually blurred in a long range. And the blur area 43 applied by spray painting or the like so as to suddenly become thin and blurry within a short range from the other end of the dark area 41.
Further, when a color similar to the decoration layer 2 and having a high brightness is applied to the lower layer of the blur area 43, the appearance as a knot pattern is improved. In this case, it is also possible to omit the blurred application.

The knot pattern 4 will be described in more detail with reference to FIG. FIG. 7 is a cross section in the axial length direction at the position B in FIG. 6, and the decoration layer 2 is formed outside the arrow body layer 1 ′.
A node pattern 4 is formed outside the decorative layer 2. The knot pattern 4 is applied by spray coating or the like so that it is relatively thick in the axial length direction and is applied by spray coating or the like, and then is gradually blurred in a long range. A blur area 42 and a blur area 43 applied by spray coating or the like so as to suddenly become thin and blurry in a short range from the other end of the dark area 41 are formed.
A protective layer H is applied to the outer side of the knot pattern 4, and the outer surface is smoothly formed so as not to be uneven in the axial direction. When smoothing so as not to be uneven in the longitudinal direction, the end portions of the knot pattern (for example, the blur areas 42 and 43) should be smoothed so that the taper is 10/1000 or less, preferably 5/1000 or less. Is preferred.
When the knot pattern 4 is bulged to some extent, a transparent coating layer is formed on the outside of the knot pattern 4 so that the outer surface is smooth, and after the linear pattern 3 is painted on the outside, the outermost layer is formed. By forming the protective layer H, both the knot pattern 4 and the linear pattern 3 can be made to have an excellent appearance that is easily visible, and the occurrence of surface irregularities due to the knot pattern can be reduced.
The coating layer may be the same paint as that of the protective layer H, but the appearance is further improved by using a paint having different colors, a paint having a different transparency, or a layer containing glittering particles. The coating position and the number of layers can be set arbitrarily.

  When the knot pattern 4 is formed at one or a plurality of positions in the axial direction of the arrow shaft 1, the outer diameter of the knot pattern 4 formed at the intermediate portion (from the center) of the arrow shaft 1 is set to the front portion or the original portion of the arrow shaft 1. The outer diameter of the knot pattern 4 is formed larger than the outer diameter of the position of the knot pattern 4 in the section, or the outer diameter of the knot pattern 4 formed in the middle part (from the center) of the arrow shaft 1 By making it larger than the diameter, flight distance and appearance can be improved.

The linear pattern 3 will be described in more detail with reference to FIG. FIG. 8 is a circumferential cross section at the position A in FIG.
FIG. 8 is an enlarged cross-sectional view in the circumferential direction of a portion where the linear pattern 3 of the arrow shaft 1 is formed. As shown in the figure, a decorative layer 2 is formed on the outer side of the arrow shaft main body layer 1 ', and a linear pattern 3 is formed at an arbitrary interval and with a predetermined height and width in the outer circumferential direction. Further, a transparent protective layer H is formed on the outside thereof.
The portion to which the linear pattern 3 is applied has a high outer surface and has an uneven height h. The unevenness is formed in a linear shape continuously or discontinuously in the axial direction of the arrow shaft 1. And the attitude | position when an arrow flies is achieved by forming the linear pattern 3 which has an unevenness | corrugation in the surface of the outer periphery of the arrow shaft 1. FIG. Further, the projections and depressions of the linear pattern can prevent the arrow from being displaced from, removed from, or dropped from the finger while the arrow is supported on the finger.
It is preferable that the width of the linear pattern 3 is as narrow as possible within a visible range of 1.0 mm or less, for example, a width in the range of 0.5 mm to 0.01 mm. The thickness is preferably in the range of 1 to 100 microns, or 5 to 100 microns.
Although the said Example formed the uneven | corrugated strip on the surface of the transparent protective layer H using the linear pattern as a bamboo pattern, you may form an uneven strip on the protective layer surface with the protective layer H, Concavities and convexities may be formed on the surface of the protective layer H by both the linear pattern and the protective layer.
In any case, the width of the concavo-convex stripes is a ridge having a very small width in the same numerical range as the width of the linear pattern described above, and the height is the same numerical range as the height (thickness) of the linear pattern described above. It is better to make the ridges with a small height.

In the above embodiment, the arrow body is formed of fiber reinforced synthetic resin, but may be formed of any material such as fiber reinforced metal or metal.
Further, in the above embodiment, the outer surface after the protective layer is formed is smooth, that is, gently formed so that fingers are not caught in the axial length direction. It is possible to make the outer surface stepped or uneven in the direction.
The decoration layer, linear pattern, and knot pattern are not limited to the material of the arrowhead body layer, but any material, for example, the arrowhead is formed of an aluminum pipe, and the decoration layer or pattern is formed on the outer surface. It can be formed on any arrow. Furthermore, you may form not only on an arrow but on the outer surface of a bow.

Each of the above-described embodiments can be implemented in any combination without departing from the scope of the invention.
In addition, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the effect of the invention can be obtained. In such a case, a configuration in which this configuration requirement is deleted can be extracted as an invention.

It is the figure which showed the arrow which concerns on one embodiment of this invention. It is the figure which showed the manufacturing method of the arrow shaft 1 of FIG. It is the figure which showed the structure of the arrow shaft 1 of FIG. It is the figure which showed the other manufacturing method which concerns on embodiment of the arrow shaft. It is the figure which showed the structure of the arrow shaft 1 of FIG. It is the figure which showed the decoration layer of the arrow of FIG. 1, a linear pattern, and a nodal pattern It is the figure which showed the structure of the axial length direction cross section about the nodal pattern of FIG. 6, and is an axial length direction sectional view of the nodal pattern 4 (B section) position of FIG. It is the figure which showed the structure of the circumferential cross section about the linear pattern of FIG. 6, and is the circumferential cross section of the linear pattern 3 (A) position of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Arrow shaft 2 Decoration layer 3 Linear pattern 4 Nodal pattern 5 筈 6 Feather 7 Thread 8 Yajiri 9 Reinforcement layer 11 Inner layer 12 Outer layer 13 Adjustment layer 41 Dark area 42 Blur area 43 Blur area H… Protection layer, M… Mandrel P1 , P2 prepreg.

Claims (5)

  A main body made of fiber reinforced resin or metal is used to form an arrow shaft main body, a decorative layer having a color similar to natural bamboo is formed on the outer side of the main shaft body, and a decorative layer is formed on the outer side of the decorative layer. A linear pattern is formed with a similar color and a color difference, and further, a transparent protective layer is formed on the outside of the linear pattern so that the decorative layer and the linear pattern can be visually recognized. The surface of the layer is formed smoothly in the axial length direction, and a number of irregularities extending in the axial length direction are formed in the circumferential direction on the protective layer surface by one or a combination of the linear pattern and the protective layer. A characteristic archery arrow.   A main body made of fiber reinforced resin or metal is used to form an arrow shaft main body, a decorative layer having a color similar to natural bamboo is formed on the outer side of the main shaft body, and a decorative layer is formed on the outer side of the decorative layer. A similar color and low brightness knot pattern is formed at a predetermined position in the axial direction of the arrow axis, and the knot pattern is spray coated so that the knurled pattern is gradually thinned from the darkly coated area. Transparent area that can be visually recognized on the outside of the knot pattern, and the area that has been spray-coated so as to be thinned suddenly within a short range from the other end that has been thickly applied An archery arrow characterized in that a protective layer is formed and the surface of the protective layer is formed smoothly from the decorative layer to the nodal pattern in the axial direction.   A main body made of fiber reinforced resin or metal is used to form an arrow shaft main body, a decorative layer having a color similar to natural bamboo is formed on the outer side of the main shaft body, and a decorative layer is formed on the outer side of the decorative layer. A similar color and low brightness knot pattern is formed at a predetermined position in the axial direction of the arrow axis, and the knot pattern is spray coated so that the knurled pattern is gradually thinned from the darkly coated area. And an area having the same color and high brightness as that of the decorative layer on the other end side where the coating is deeply applied, and a transparent layer that can visually recognize the decorative layer and the node pattern on the outside of the node pattern. An archery arrow characterized in that a protective layer is formed and the surface of the protective layer is formed smoothly from the decorative layer to the knot pattern in the axial direction.   The archery arrow according to claim 2 or 3, wherein a prepreg or a paint is built up to a predetermined thickness on the node pattern portion.   5. The archery arrow according to claim 1, wherein the outer diameter after forming the protective layer is the largest outer diameter of the knot pattern formed from the middle or center of the arrow shaft.