WO2022018886A1 - Dart and shaft for dart - Google Patents

Dart and shaft for dart Download PDF

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Publication number
WO2022018886A1
WO2022018886A1 PCT/JP2020/048958 JP2020048958W WO2022018886A1 WO 2022018886 A1 WO2022018886 A1 WO 2022018886A1 JP 2020048958 W JP2020048958 W JP 2020048958W WO 2022018886 A1 WO2022018886 A1 WO 2022018886A1
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WO
WIPO (PCT)
Prior art keywords
shaft
flight
darts
state
rotation
Prior art date
Application number
PCT/JP2020/048958
Other languages
French (fr)
Japanese (ja)
Inventor
陽平 森川
健紘 白石
修 箕山
Original Assignee
三宅ハイテックジャパン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三宅ハイテックジャパン株式会社 filed Critical 三宅ハイテックジャパン株式会社
Priority to JP2022538574A priority Critical patent/JP7401137B2/en
Publication of WO2022018886A1 publication Critical patent/WO2022018886A1/en

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B65/00—Implements for throwing  ; Mechanical projectors, e.g. using spring force
    • A63B65/02—Spears or the like ; Javelins

Definitions

  • This disclosure relates to darts and shafts for darts, and more specifically to shafts that are a part of darts and darts used in darts games.
  • Patent Document 1 discloses darts. This dart is equipped with points, barrels, shafts and flights. A point is connected to one end of the barrel and a shaft is connected to the other end of the barrel. The flight is rotatably connected to the shaft.
  • darts that allow the flight to rotate with respect to the shaft are called spin type darts.
  • darts whose rotation with respect to the shaft of the flight is restricted are called lock type darts.
  • the darts disclosed in Patent Document 1 can be attached to the shaft only in a state where the flight is allowed to rotate with respect to the shaft. That is, the darts disclosed in Patent Document 1 can only be used as spin-type darts, and cannot be used as lock-type darts.
  • an object of the present invention is to provide darts and a shaft for darts that can be used in both a state in which rotation with respect to the shaft is permitted and a state in which rotation is restricted.
  • the darts include a barrel, a chip that can be attached to the barrel, a shaft that can be attached to the barrel, and a flight that can be attached to the shaft.
  • the darts can be changed into a first state and a second state. In the first state, the flight is attached to the shaft with rotation allowed. In the second state, the flight is attached to the shaft with the rotation restricted.
  • the shaft for darts includes a flight attachment portion to which a flight for darts can be attached.
  • the shaft can be changed between a first state and a second state. In the first state, the flight is attached to the flight attachment portion in a state where rotation is allowed. In the second state, the flight is attached to the flight attachment portion in a state where the rotation is restricted.
  • FIG. 1 is a perspective view of darts according to an embodiment of the present disclosure.
  • FIG. 2 is an exploded perspective view of the same darts.
  • FIG. 3 is a perspective view showing how the flight is attached to the shaft provided by the darts of the same as above.
  • FIG. 4A is a partially cutaway side view of the same shaft, and
  • FIG. 4B is a rear view of the same shaft.
  • FIG. 5A is a cross-sectional view showing a connection portion between the shaft and the flight when the same shaft is in the first state
  • FIG. 5B is a cross-sectional view showing the shaft and the flight when the same shaft is in the second state. It is sectional drawing which showed the connection part.
  • FIG. 5A is a cross-sectional view showing a connection portion between the shaft and the flight when the same shaft is in the first state
  • FIG. 5B is a cross-sectional view showing the shaft and the flight when the same shaft is in the second state. It is sectional drawing which showed the connection
  • FIG. 6 is a partially cutaway cross-sectional view of the darts of the modified example 1.
  • FIG. 7A is a partially cutaway side view of the first shaft included in the darts of the modified example 1
  • FIG. 7B is a rear view of the first shaft included in the darts of the modified example 1.
  • FIG. 8A is a partially cutaway side view of the second shaft included in the darts of the modified example 1
  • FIG. 8B is a rear view of the second shaft included in the darts of the modified example 1.
  • FIG. 9A is a perspective view of the flight provided with the darts of the same
  • FIG. 9B is a cross-sectional view of the front end portion of the flight of the same.
  • FIG. 10A is a cross-sectional view showing a connection portion between the second shaft and the flight in a state where the same flight is attached to the second shaft
  • FIG. 10B is an enlarged view of the region A1 in FIG. 10A
  • 11A is a side view of the first attachment provided in the same darts
  • FIG. 11B is a front view of the first attachment
  • FIG. 11C is a rear view of the first attachment
  • FIG. 11D is a sectional view of the first attachment.
  • FIG. 12 is a side view of the second attachment provided in the same darts.
  • FIG. 13 is a cross-sectional view of a shaft and a flight provided in the darts of the second modification.
  • FIG. 14 is an enlarged cross-sectional view of the same darts in the second state.
  • FIG. 15 is a perspective view showing how the flight is attached to the same shaft.
  • Embodiment Figure 1 shows the darts 1 of the embodiment.
  • the darts 1 is used, for example, as an arrow thrown toward a target such as a darts board in a darts game.
  • the darts 1 includes a tip 2, a barrel 3, a shaft 4, and a flight 5 as parts constituting the darts 1.
  • the chip 2 is also called a darts chip or a point.
  • the barrel 3, shaft 4, and flight 5 are also referred to as darts barrel, darts shaft, and darts flight, respectively.
  • the darts 1 are assembled by combining the tip 2, the barrel 3, the shaft 4, and the flight 5.
  • the shaft 4 has a central axis AX.
  • the direction in which the central axis AX extends is referred to as the axial direction of the shaft 4.
  • the tip 2, the barrel 3, the shaft 4, and the flight 5 are arranged in order in the axial direction of the shaft 4.
  • each element of the darts 1 will be described using the orientation of the darts 1 in the assembled state.
  • the direction parallel to the axial direction of the shaft 4 and from the flight 5 to the tip 2 is defined as forward, and the direction parallel to the axial direction of the shaft 4 and from the tip 2 to the flight 5 is rearward. Is defined as.
  • Chip 2 is the part that sticks in the darts 1.
  • the chip 2 constitutes the front end portion of the darts 1.
  • the chip 2 has a barrel mounting portion 20 that can be attached to and detached from the barrel 3.
  • the barrel mounting portion 20 is mounted on the barrel 3.
  • the barrel mounting portion 20 is a rear end portion of the chip 2, and is formed in a rod shape extending in the axial direction of the shaft 4.
  • the barrel mounting portion 20 has a male screw 200 formed on the outer peripheral surface of the barrel mounting portion 20.
  • the "front end” in the present disclosure means a portion having a certain range including the "front end”. The same applies to expressions with other "... end” such as "rear end”.
  • the barrel 3 is a part of the darts 1 that the user has, and is located behind the chip 2.
  • the barrel 3 is formed in a rod shape extending in the axial direction of the shaft 4.
  • the barrel 3 is made of metal.
  • the barrel 3 is a sintered product made mainly of tungsten, which is a metal having a high specific density.
  • the barrel 3 may be formed of a metal other than tungsten such as brass, titanium or nickel, or may be formed of a material other than metal.
  • the barrel 3 has a plurality of grooves 30 formed on the outer peripheral surface of the barrel 3.
  • the plurality of grooves 30 make the fingers of the user holding the barrel 3 less slippery.
  • the barrel 3 may have a plurality of protrusions formed on the outer peripheral surface of the barrel 3 instead of the plurality of grooves 30 or in addition to the plurality of grooves 30. Further, the barrel 3 does not have to have a plurality of grooves 30.
  • the barrel 3 further has a chip mounting portion 31 that can be attached to and detached from the chip 2.
  • the tip mounting portion 31 is a front end portion of the barrel 3.
  • the tip mounting portion 31 is formed in a cylindrical shape extending in the axial direction of the shaft 4.
  • the chip mounting portion 31 has a hole 310 formed inside the cylindrical chip mounting portion 31.
  • the hole 310 extends rearward from the front end surface of the barrel 3.
  • the tip mounting portion 31 has a female screw 311 formed on the inner peripheral surface of the hole 310.
  • the barrel mounting portion 20 of the tip 2 is screwed into the hole 310 of the tip mounting portion 31, and the female screw 311 of the tip mounting portion 31 and the male screw 200 of the barrel mounting portion 20 are fitted so that the tip 2 is mounted on the barrel 3. ..
  • the barrel 3 further has a shaft mounting portion 32 that can be attached to and detached from the shaft 4.
  • the shaft mounting portion 32 is a rear end portion of the barrel 3, and is formed in a cylindrical shape extending in the axial direction of the shaft 4.
  • the shaft mounting portion 32 has a hole 320 formed inside the cylindrical shaft mounting portion 32.
  • the hole 320 extends forward from the rear end surface of the barrel 3.
  • the shaft mounting portion 32 has a female screw 321 formed on the inner peripheral surface of the hole 320.
  • the shaft 4 is a part of the darts 1 that connects the barrel 3 and the flight 5.
  • the shaft 4 is located behind the barrel 3.
  • the shaft 4 is formed in a rod shape.
  • the shaft 4 has a barrel mounting portion 40 that can be attached to and detached from the barrel 3.
  • the barrel mounting portion 40 is a front end portion of the shaft 4, and is formed in a rod shape extending in the axial direction of the shaft 4.
  • the barrel mounting portion 40 has a male screw 400 formed on the outer peripheral surface of the barrel mounting portion 40.
  • the barrel mounting portion 40 is screwed into the hole 320 of the shaft mounting portion 32, and the female screw 321 of the shaft mounting portion 32 and the male screw 400 of the barrel mounting portion 40 are fitted so that the shaft 4 is mounted on the barrel 3.
  • the shaft 4 has a flight mounting portion 41 that can be attached to and detached from the flight 5.
  • the flight mounting portion 41 is a rear end portion of the shaft 4, and is formed in a cylindrical shape extending in the axial direction of the shaft 4. As shown in FIGS. 4A and 4B, the flight mounting portion 41 has an insertion hole 410 formed inside the cylindrical flight mounting portion 41.
  • the insertion hole 410 extends forward from the rear end surface of the shaft 4.
  • the insertion hole 410 opens toward the rear of the shaft 4.
  • Flight 5 shown in FIG. 2 functions as a blade of darts 1. Flight 5 is located behind the shaft 4. The flight 5 has a rod-shaped shaft portion 50 extending in the axial direction of the shaft 4.
  • the shaft portion 50 has an insertion portion 500.
  • the insertion portion 500 constitutes the front end portion of the shaft portion 50.
  • the insertion portion 500 functions as a shaft mounting portion that can be attached to and detached from the shaft 4.
  • the insertion portion 500 is formed in a rod shape extending in the axial direction of the shaft 4. As shown in FIGS. 5A and 5B, the flight 5 is attached to the shaft 4 by fitting the insertion portion 500 into the insertion hole 410 of the shaft 4.
  • the flight 5 further has a plurality of blade portions 51.
  • the plurality of blades 51 stabilize the attitude of the darts 1 during flight.
  • the plurality of blade portions 51 project from a portion of the shaft portion 50 behind the insertion portion 500 toward the outer peripheral side of the shaft portion 50.
  • Flight 5 has four blades 51 as a plurality of blades 51.
  • the four blade portions 51 are arranged at intervals in the axial direction of the shaft 4.
  • the number of blades 51 included in the flight 5 is not limited.
  • Each of the chip 2, the shaft 4, and the flight 5 is formed of, for example, a material containing a synthetic resin and a substance existing in nature.
  • Substances existing in nature are, for example, plants, minerals or organisms.
  • a material containing a substance existing in the natural world as a material for each of the chip 2, the shaft 4, and the flight 5, it is useful for preserving the natural environment.
  • a wood / synthetic resin composite material As the materials of the chip 2, the shaft 4, and the flight 5, in order to increase the strength of each of the chip 2, the shaft 4, and the flight 5, a wood / synthetic resin composite material, a paper / synthetic resin composite material, or calcium carbonate is used. -Synthetic resin composite materials, etc. are used.
  • the wood / synthetic resin composite material includes, for example, a thermoplastic resin such as polyethylene or polypropylene and wood powder.
  • the wood-derived component of the wood / synthetic resin composite material is preferably contained in an amount of 30 wt% or more, more preferably 50 wt% or more, based on the total amount of the wood / synthetic resin composite material.
  • the paper / synthetic resin composite material includes, for example, a polyolefin resin such as polypropylene or polyethylene, and powdered paper. It is preferable that the component derived from paper of the paper / synthetic resin composite material is contained in an amount of 50 wt% or more based on the total amount of the paper / mixed synthetic resin.
  • the calcium carbonate / synthetic resin composite material contains, for example, a thermoplastic resin such as polyethylene, polypropylene, polystyrene or polyethylene terephthalate, and calcium carbonate (limestone). Calcium carbonate is preferably contained in an amount of 50 wt% or more based on the total amount of the calcium carbonate / synthetic resin composite material.
  • the shaft 4 and the flight 5 may be formed of a material containing a synthetic resin and a naturally occurring substance. That is, at least one of the chip 2, the shaft 4, and the flight 5 may be formed of a material containing a synthetic resin and a substance existing in nature. The materials of the tip 2, the shaft 4, and the flight 5 are not limited. Each of the chip 2, the shaft 4, and the flight 5 may be formed of, for example, a material, paper, metal, or the like, which contains a synthetic resin but does not contain a naturally occurring substance.
  • the insertion portion 500 of the flight 5 can be inserted by changing the insertion amount with respect to the insertion hole 410 of the shaft 4. Therefore, the flight 5 can be attached to the shaft 4 by changing the position of the shaft 4 in the axial direction.
  • the insertion portion 500 is fitted into the insertion hole 410 in a state of being inserted by a predetermined first insertion amount.
  • the insertion portion 500 is fitted in a state where a predetermined second insertion amount larger than the first insertion amount is inserted into the insertion hole 410. That is, in each of the darts 1 and the shaft 4, the first state shown in FIG.
  • the insertion portion 500 can be rotatably inserted into the insertion hole 410 of the shaft 4 in the axial direction of the shaft 4.
  • the insertion portion 500 has a fitting portion 501 that is restricted from moving in the axial direction of the shaft 4 by the shaft 4.
  • the fitting portion 501 is referred to as a first fitting portion 501.
  • the first fitting portion 501 is a ridge formed on the outer peripheral surface of the insertion portion 500 and projecting toward the outer peripheral side of the insertion portion 500.
  • the first fitting portion 501 is located at the rear portion of the insertion portion 500.
  • the first fitting portion 501 extends in the circumferential direction of the insertion portion 500 and extends over the entire length of the insertion portion 500 in the circumferential direction.
  • the flight mounting portion 41 of the shaft 4 has a first movement restricting portion 42.
  • the first movement restricting portion 42 is formed on the inner surface of the insertion hole 410, and restricts the movement of the first fitting portion 501 in the axial direction of the shaft 4 in the first state shown in FIG. 5A.
  • the first movement restricting unit 42 has a plurality of first protrusions 421 and a plurality of second protrusions 422.
  • the first movement restricting unit 42 of the present embodiment has three first protrusions 421 and four second protrusions 422.
  • the plurality of first protrusions 421 are arranged on the inner peripheral surface of the insertion hole 410 at intervals in the circumferential direction of the shaft 4.
  • the plurality of second protrusions 422 are located behind the plurality of first protrusions 421.
  • the plurality of second protrusions 422 are arranged on the inner peripheral surface of the insertion hole 410 at intervals in the circumferential direction of the shaft 4.
  • the first fitting portion 501 of flight 5 is the axis of the shaft 4 between the plurality of first protrusions 421 and the plurality of second protrusions 422 of the shaft 4. It fits in a movable direction.
  • the first fitting portion 501 is restricted from moving in the axial direction of the shaft 4 by the plurality of first protrusions 421 and the plurality of second protrusions 422, and the flight 5 may move in the axial direction of the shaft 4. Be regulated.
  • the frictional force of the flight 5 with respect to the shaft 4 is set so that the flight 5 is suppressed from rotating due to a weak force such as wind and rotates with respect to the shaft 4 only when a strong force is applied.
  • the flight 5 may be rotatably fitted to the shaft 4 when the darts 1 are in the first state, and the gap may not be formed.
  • the first fitting portion 501 and the first movement restricting portion 42 are not limited.
  • the first fitting portion 501 may be a plurality of protrusions formed on the outer peripheral surface of the insertion portion 500.
  • the first movement restricting portion 42 is a groove formed on the inner peripheral surface of the insertion hole 410.
  • the first fitting portion 501 of the flight 5 may be, for example, a concave groove formed on the outer peripheral surface of the insertion portion 500.
  • the first movement restricting portion 42 of the shaft 4 has, for example, a protrusion formed on the inner peripheral surface of the insertion hole 410, and this protrusion fits into the concave groove which is the first fitting portion 501. ..
  • the flight mounting portion 41 of the shaft 4 has a second movement restricting portion 412.
  • the second movement restricting portion 412 is formed on the inner surface of the insertion hole 410, and as shown in FIG. 5B, when the darts 1 is in the second state, the first fitting portion 501 of the flight 5 is oriented in the axial direction of the shaft 4. Regulate moving.
  • the second movement restricting unit 412 has a plurality of third protrusions 419 formed on the inner peripheral surface of the insertion hole 410, and the plurality of first protrusions 421 described above. There is.
  • the second movement control unit 412 of the present embodiment has eight third protrusions 419.
  • the plurality of third protrusions 419 are arranged at intervals in the circumferential direction of the shaft 4.
  • the plurality of third protrusions 419 are located in front of the plurality of first protrusions 421.
  • the first fitting portion 501 of the flight 5 is fitted between the plurality of third protrusions 419 and the plurality of first protrusions 421.
  • the first fitting portion 501 is restricted from moving in the axial direction of the shaft 4
  • the flight 5 is restricted from moving in the axial direction of the shaft 4.
  • the position, shape, size, etc. of the second movement restricting unit 412 are not limited.
  • the second movement restricting portion 412 may be a groove formed on the inner peripheral surface of the insertion hole 410.
  • the flight 5 has, for example, a protrusion that can be movably fitted into the groove in the axial direction of the shaft 4.
  • the insertion portion 500 of the flight 5 has a fitting portion 502 in which the movement of the shaft 4 in the axial direction is restricted by the shaft 4.
  • the fitting portion 502 is referred to as a second fitting portion 502.
  • the second fitting portion 502 of the present embodiment has a plurality of protrusions 504 formed on the outer peripheral surface of the rear end portion of the insertion portion 500.
  • the second fitting portion 502 of the present embodiment has four protrusions 504 as a plurality of protrusions 504.
  • the plurality of protrusions 504 are arranged at intervals in the circumferential direction of the insertion portion 500.
  • the flight mounting portion 41 of the shaft 4 further has a rotation regulating portion 413 shown in FIGS. 3 to 4B.
  • the rotation restricting portion 413 restricts the insertion portion 500 from rotating in the axial direction of the shaft 4.
  • the rotation restricting portion 413 has a plurality of recesses 414 formed in the rear end portion of the flight mounting portion 41.
  • the rotation restricting portion 413 of the present embodiment has the same number of recesses 414 as the protrusions 504 of the second fitting portion 502 as a plurality of recesses 414.
  • the plurality of recesses 414 are arranged at intervals in the circumferential direction of the flight mounting portion 41.
  • the plurality of recesses 414 correspond one-to-one with the plurality of protrusions 504.
  • Each recess 414 is recessed forward from the rear end surface of the flight mounting portion 41.
  • Each recess 414 penetrates the peripheral wall portion of the flight mounting portion 41 in the thickness direction of the peripheral wall portion.
  • each protrusion 504 of the flight 5 when the darts 1 are in the first state, the plurality of protrusions 504 of the flight 5 are located behind the flight mounting portion 41 of the shaft 4. In this case, each protrusion 504 does not fit into the recess 414, and the rotation of the shaft 4 in the axial direction is not restricted. Therefore, the flight 5 is attached to the shaft 4 in a state where the rotation of the shaft 4 in the axial direction is allowed. As shown in FIG. 5B, when the darts 1 are in the second state, each protrusion 504 of the flight 5 fits into the corresponding recess 414 of the shaft 4 to restrict the axial movement of the shaft 4. Therefore, the flight 5 is attached to the shaft 4 in a state where the rotation of the shaft 4 in the axial direction is restricted.
  • the second fitting portion 502 and the rotation restricting portion 413 are not limited.
  • the second fitting portion 502 may be one protrusion formed on the outer peripheral surface of the insertion portion 500, in which case the rotation restricting portion 413 has, for example, one recess into which the protrusion fits.
  • the second fitting portion 502 may be one or a plurality of recesses formed on the outer peripheral surface of the insertion portion 500.
  • the rotation restricting portion 413 is composed of, for example, one or a plurality of protrusions formed on the inner peripheral surface of the flight mounting portion 41.
  • the user inserts the insertion portion 500 of the flight 5 into the insertion hole 410 of the shaft 4 by the first insertion amount, so that the darts 1 (shaft 4) is set as the first state and the flight 5 is set. It can be attached to the shaft 4 in a state where the rotation of the shaft 4 in the axial direction is allowed.
  • the darts 1 (shaft 4) is in the first state, the user moves the flight 5 forward with respect to the shaft 4 until the insertion amount of the insertion portion 500 of the flight 5 into the insertion hole 410 becomes the second insertion amount. By moving, as shown in FIG.
  • the darts 1 (shaft 4) can be set as the second state, and the rotation of the shaft 4 of the flight 5 in the axial direction can be restricted.
  • the first fitting portion 501 of the flight 5 gets over the plurality of first protrusions 421 and is fitted between the plurality of first protrusions 421 and the plurality of third protrusions 419. That is, the height of each first protrusion 421 is such that when the darts 1 are in the first state, the first fitting portion 501 is applied only when a forward force of a predetermined magnitude or more is applied to the flight 5. It is set to get over a plurality of first protrusions 421.
  • the darts 1 can be used as a spin type darts in which the flight 5 can rotate with respect to the shaft 4 by setting it in the first state shown in FIG. 5A. Further, the darts 1 can also be used as a lock type darts in which the rotation of the flight 5 with respect to the shaft 4 is restricted by setting the darts 1 in the second state shown in FIG. 5B.
  • the flight 5 rotates when another dart thrown toward the target hits the flight 5 while being stuck. Therefore, it is difficult for a large force to be applied to the flight 5, and the flight 5 is unlikely to be deformed or damaged. Further, in this case, it is also suppressed that the trajectory of the thrown darts 1 is significantly changed or the thrown darts 1 is repelled when the thrown darts 1 hits the target pierced darts. In particular, in the present embodiment, as described above, the flight 5 is prevented from rotating too much with respect to the shaft 4, so that the thrown darts 1 are further suppressed from being flipped.
  • the darts 1 are less likely to be damaged due to the rotation of the flight 5 with respect to the shaft 4.
  • the rotation of flight 5 is restricted in the state of being stabbed in the lock type darts, there is an advantage that it is easy to perform a technique called stacking in which other darts are thrown so as to be placed on the darts 1 stabbed in the target. There is also.
  • the darts 1 can be easily changed between a state in which the rotation of the flight 5 is allowed and a state in which the rotation of the flight 5 is restricted by changing the mounting position of the flight 5 on the shaft 4. Therefore, in the process of throwing the darts 1 a plurality of times in succession during the game, the user keeps his / her line of sight from the target of the darts 1 and rotates the flight 5 while maintaining his / her concentration and posture. It can be changed between an acceptable state and a regulated state.
  • the darts 1 of the present embodiment can use the common shaft 4 and flight 5 regardless of whether the darts 1 are of the spin type or the lock type. Therefore, in the darts game, which is a delicate competition, the user can throw the darts 1 with the same feeling regardless of whether the darts 1 is used as a spin type or a rock type.
  • FIG. 6 shows the darts 1A of this modified example.
  • the darts 1A further includes a plurality of types of shafts 43 and 44 in addition to the shaft 4 of the embodiment.
  • the plurality of types of shafts include a first shaft 43 shown in FIG. 7A and a second shaft 44 shown in FIG. 8A. That is, the shaft of the present embodiment further includes a first shaft 43 and a second shaft 44 in addition to the shaft 4 of the embodiment.
  • the darts 1A further includes the flight 5A shown in FIG. 9A, in addition to the flight 5 of the embodiment. That is, the flight of the present embodiment further has flight 5A in addition to flight 5 of the embodiment.
  • the first shaft 43 shown in FIG. 7A can be mounted with the flight 5A allowed to rotate with respect to the first shaft 43.
  • the second shaft 44 shown in FIG. 8A can be attached with the flight 5A in a state where the rotation with respect to the second shaft 44 is restricted. That is, in the darts 1A of this modification, the first state in which the flight 5A is attached to the shaft 43 in a state where rotation is allowed by exchanging the shafts 43 and 44 attached to the barrel 3, and the flight 5A is the shaft 44. It can be changed to the second state where it is attached in a state where rotation is allowed.
  • a shaft selected from the shaft 4 of the embodiment and the plurality of types of shafts 43 and 44 can be attached to the barrel 3 (see FIG. 6).
  • the barrel 3 may be a barrel to which the shaft 4 of the embodiment cannot be attached.
  • Each of the first shaft 43 and the second shaft 44 has a barrel mounting portion 20 and a flight mounting portion 41A.
  • Each of the barrel mounting portions 20 of the first shaft 43 and the second shaft 44 can be mounted on the shaft mounting portion 32 of the barrel 3 to which the barrel mounting portion 20 of the shaft 4 of the first embodiment is mounted.
  • the flight 5 moves in the axial direction of the shaft 4 in place of the first movement restricting portion 42 and the second movement restricting portion 412 (see FIGS. 5A and 5B) of the embodiment. It has a movement control unit 45 that regulates what to do.
  • the flight mounting portion 41A of each of the shafts 43 and 44 does not have the rotation restricting portion 413 (see FIG. 3) of the embodiment.
  • the flight mounting portion 41A of the first shaft 43 has a support portion 415 that supports the flight 5A while allowing the flight 5A to rotate in the axial direction of the first shaft 43.
  • the flight mounting portion 41A of the second shaft 44 has a rotation regulating portion 416 that regulates the flight 5A to rotate in the axial direction of the second shaft 44.
  • the movement restricting portion 45 of each of the shafts 43 and 44 is a groove formed on the inner peripheral surface of the rear end portion of the insertion hole 410A.
  • the movement restricting portion 45 extends in the circumferential direction of the insertion hole 410A and extends over the entire length of the insertion hole 410A in the circumferential direction.
  • the support portion 415 of the first shaft 43 is a pin-shaped protrusion protruding rearward from the inner surface of the front end portion of the insertion hole 410A.
  • the rotation restricting portion 416 of the second shaft 44 projects rearward from the inner surface of the front end portion of the insertion hole 410A.
  • the rotation restricting portion 416 is located at the center of the first protrusion 417 protruding rearward from the inner surface of the front end of the insertion hole 410A and the first protrusion 417 when viewed in the axial direction of the second shaft 44. It has a pin-shaped second protrusion 418 that further protrudes toward the rear.
  • the first protrusion 417 is formed in an X shape when viewed in the axial direction of the second shaft 44.
  • the insertion portion 500A included in the shaft portion 50A of the flight 5A is fitted in place of the first fitting portion 501 and the second fitting portion 502 (see FIG. 3) of the embodiment. It has a portion 505 and a fitting recess 506.
  • the fitting portion 505 is a protrusion formed on the outer peripheral surface of the rear end portion of the insertion portion 500A.
  • the fitting portion 505 extends in the circumferential direction of the insertion portion 500A and extends over the entire length of the insertion portion 500A in the circumferential direction.
  • the fitting portion 505 of the insertion portion 500A inserted into the insertion hole 410A receives the shaft 43, with respect to the movement restricting portion 45. It is fitted in a state where movement in the axial direction of 44 is allowed. As a result, the flight 5A is attached to each of the shafts 43 and 44 in a state where the axial movement of the shafts 43 and 44 is restricted.
  • the flight 5A When the flight 5A is attached to the first shaft 43, a gap is formed between the bottom surface of the movement restricting portion 45, which is a groove, and the fitting portion 505, and the bottom surface and the fitting portion 505 do not come into contact with each other. Therefore, the flight 5A tends to rotate in the axial direction of the shaft 4 with respect to the first shaft 43.
  • the positions, shapes, sizes, etc. of the movement restricting portion 45 and the fitting portion 505 are not limited.
  • the movement restricting portion 45 may be a protrusion
  • the fitting portion 505 may be a recess into which the protrusion can be fitted.
  • the fitting recess 506 is formed on the front end surface of the insertion portion 500A.
  • the fitting recess 506 has a first recess 507 and a second recess 508 continuous with the first recess 507.
  • the first recess 507 is a groove extending rearward from the front end surface of the insertion portion 500A.
  • the first recess 507 is an X-shaped groove that matches the first protrusion 417 of the second shaft 44 when viewed in the axial direction of the insertion portion 500A.
  • the second recess 508 is a linear hole extending rearward from a position located at the center of the first recess 507 when viewed in the axial direction of the insertion portion 500A.
  • the support portion 415 of the first shaft 43 is of the first shaft 43 with respect to the first recess 507 and the second recess 508 of the flight 5A. It is rotatably inserted in the direction around the axis. In this case, the support portion 415 rotatably supports the front end portion of the insertion portion 500A in the axial direction of the first shaft 43. Therefore, the flight 5A is attached to the first shaft 43 in a state where the rotation of the first shaft 43 in the axial direction is allowed.
  • the second protrusion 418 of the second shaft 44 is second with respect to the first recess 507 and the second recess 508 shown in FIG. 9B of the flight 5A. It is rotatably inserted in the axial direction of the shaft 44.
  • the first protrusion 417 of the second shaft 44 is fitted into the first recess 507 of the flight 5A in a state where the rotation of the second shaft 44 in the axial direction is restricted. Therefore, the flight 5A is attached to the second shaft 44 in a state where the rotation is restricted.
  • the user can put the darts 1A in either the first state in which the rotation of the flight 5A is restricted or the second state in which the rotation of the flight 5A is allowed. Can be changed. That is, when the darts 1A is in the first state, the first shaft 43 is attached to the barrel 3 and the flight 5A is rotatably attached to the first shaft 43. Further, when the darts 1A is in the second state, the second shaft 44 is attached to the barrel 3 and the flight 5A is non-rotatably attached to the second shaft 44.
  • first protrusion 417 and the first recess 507 are fitted into the first recess 507 in a state where the rotation of the first protrusion 417 in the axial direction of the second shaft 44 is restricted.
  • first protrusion 417 may be formed on the flight 5A
  • first recess 507 may be formed on the second shaft 44.
  • the darts 1A further includes a plurality of types of attachments 61 and 62.
  • the darts 1A includes a first attachment 61 shown in FIG. 11A and a second attachment 62 shown in FIG. 12 as a plurality of types of attachments.
  • An attachment selected from a plurality of types of attachments 61 and 62 can be attached to the second shaft 44 shown in FIG. 8A.
  • the second shaft 44 and the first attachment 61 (see FIG. 11A) attached to the second shaft 44 form a third shaft.
  • the second shaft 44 constitutes the shaft body of the third shaft.
  • the second shaft 44 and the second attachment 62 (FIG. 12) attached to the second shaft 44 form a fourth shaft.
  • the second shaft 44 constitutes the shaft body of the fourth shaft.
  • the darts 1A is further equipped with a plurality of types of flights 52 and 53 in addition to the flight 5A.
  • the darts 1A includes a flight 52 shown in FIG. 11A and a flight 53 shown in FIG. 12 as a plurality of types of flights.
  • the flight 52 is referred to as a second flight 52
  • the flight 53 is referred to as a third flight 53.
  • the second flight 52 can be attached to the first attachment 61 which constitutes a part of the third shaft.
  • the third flight 53 can be attached to the second attachment 62 which constitutes a part of the fourth shaft.
  • Each of the first attachment 61 and the second attachment 62 is formed in a rod shape extending in the axial direction of the second shaft 44.
  • Each attachment 61, 62 is formed of, for example, a synthetic resin such as polypropylene, polyamide, polystyrene, polycarbonate or polyacetal, a carbon fiber mixed resin or a metal.
  • the materials of the first attachment 61, the second attachment 62, the second flight 52, and the third flight 53 are not limited, but are the same as those of the tip 2, the shaft 4, the first shaft 43, the second shaft 44, and the flight 5A. In addition, it may be formed from a material containing a synthetic resin and a substance existing in nature.
  • Each attachment 61, 62 has an insertion portion 63 that can be inserted into the insertion hole 410A of the second shaft 44.
  • the insertion portion 63 constitutes the front end portions of the attachments 61 and 62.
  • the insertion portion 63 has the same shape and size as the insertion portion 500A (see FIG. 9A) of the flight 5A. That is, the insertion portion 63 has a fitting portion 630 similar to the fitting portion 505 and a fitting recess 631 similar to the fitting recess 506.
  • the fitting portion 630 is fitted into the movement restricting portion 45 of the second shaft 44 shown in FIG. 8A, and the rotation regulating portion 416 of the second shaft 44 is fitted in the fitting recess 631 to be the second shaft 44.
  • the second shaft 44 is attached in a state where the rotation in the axial direction is restricted with respect to the second shaft 44.
  • the first attachment 61 shown in FIGS. 11A to 11D further has a flight attachment portion 610 to which the second flight 52 can be detachably attached.
  • the flight mounting portion 610 constitutes the rear end portion of the first attachment 61.
  • the flight mounting portion 610 is formed in a rod shape extending in the axial direction of the second shaft 44.
  • the flight mounting portion 610 has a fitting groove 611.
  • the fitting groove 611 is recessed forward from the rear end surface of the flight mounting portion 610, and is formed in an X shape when viewed in the axial direction of the second shaft 44.
  • the second flight 52 that can be attached to the first attachment 61 has a plurality of blade portions 520.
  • the second flight 52 of the present embodiment has four blade portions 520 as a plurality of blade portions 520.
  • the plurality of blade portions 520 are arranged at intervals in the axial direction of the second shaft 44 so as to form an X shape when viewed in the axial direction of the second shaft 44.
  • the plurality of blade portions 520 are connected to each other at the ends opposite to the outer peripheral side of each blade portion 520.
  • the second flight 52 has an attachment attachment portion 521 that can be attached to the first attachment 61.
  • the attachment attachment portion 521 is a front end portion of the plurality of blade portions 520, and is formed in an X shape that matches the fitting groove 611 of the first attachment 61 when viewed in the axial direction of the second shaft 44.
  • the second flight 52 can be removed from the first attachment 61 in a state where the rotation of the second shaft 44 in the axial direction is restricted. Attached to.
  • the shape of the flight attachment portion 610 of the first attachment 61 can be appropriately changed according to the shape of the second flight 52.
  • the second attachment 62 shown in FIG. 12 further has a flight attachment portion 620 to which the third flight 53 can be detachably attached.
  • the flight attachment portion 620 constitutes the rear end portion of the second attachment 62.
  • the flight mounting portion 620 is formed in a rod shape extending in the axial direction of the second shaft 44.
  • the third flight 53 that can be attached to the second attachment 62 has a tubular portion 530 and a plurality of blade portions 531.
  • the tubular portion 530 is formed in a tubular shape extending in the axial direction of the second shaft 44.
  • the flight attachment portion 620 of the second attachment 62 is rotatably fitted inside the tubular portion 530 in the axial direction of the second shaft 44, so that the third flight 53 is rotatably attached to the second attachment 62. .. That is, the tubular portion 530 is an attachment attachment portion that can be rotatably attached to the second attachment 62.
  • the shape of the flight attachment portion 620 of the second attachment 62 can be appropriately changed according to the shape of the third flight 53.
  • the user can attach the first attachment 61 shown in FIG. 11A to the second shaft 44 shown in FIG. 8A, and attach the second flight 52 to the first attachment 61 in a state where rotation is restricted. Further, the user can attach the second attachment 62 shown in FIG. 12 to the second shaft 44 shown in FIG. 8A, and attach the third flight 53 to the second attachment 62 in a state where rotation is allowed. That is, the user can use the second flight 52 and the third flight 53 by using the second shaft 44 by selecting the attachments 61 and 62 attached to the second shaft 44.
  • the darts 1B of this modification also has the first state shown in FIG. 13, in which the flight 5B is allowed to rotate with respect to the shaft 4B by attaching the flight 5B to the shaft 4B by changing the insertion amount of the insertion portion 500B into the insertion hole 410B. And the second state shown in FIG. 14 in which the rotation of the flight 5B with respect to the shaft 4B is restricted can be changed.
  • the first fitting portion 501B of the flight 5B has two fitting portions 5011 and 5012 formed on the outer peripheral surface of the insertion portion 500B.
  • Each of the two fitting portions 5011 and 5012 is a groove formed on the outer peripheral surface of the insertion portion 500B.
  • the two fitting portions 5011 and 5012 are formed at the rear end portion of the insertion portion 500B at intervals in the axial direction of the shaft 4B.
  • the grooves constituting the fitting portions 5011 and 5012 extend in the circumferential direction of the insertion portion 500B and extend over the entire length of the insertion portion 500B in the circumferential direction.
  • the fitting portion 5011 located on the front side is referred to as a first fitting portion 5011
  • the fitting portion 5012 located on the rear side is referred to as a second fitting portion 5012.
  • the shaft 4B has a movement control unit 46 in place of the first movement control unit 42 and the second movement control unit 412 (see FIG. 4A).
  • the movement restricting portion 46 has a plurality of protrusions 460 formed on the inner peripheral surface of the insertion hole 410B.
  • the movement restricting portion 46 of this modification has four protrusions 460.
  • the plurality of protrusions 460 are formed on the inner peripheral surface of the insertion hole 410B at intervals in the circumferential direction of the shaft 4B.
  • the movement restricting portion 46 that is, a plurality of protrusions 460
  • the shaft 4B is in the axial direction of the shaft 4B with respect to the first fitting portion 5011 of the flight 5B. Fits movable in. This restricts the flight 5B from moving in the axial direction of the shaft 4B.
  • the darts 1B When the darts 1B is in the first state shown in FIG. 13, a slight gap is formed between the plurality of protrusions 460 and the inner peripheral surface of the first fitting portion 5011 which is a groove, and the plurality of protrusions 460 are formed. , Only a part of it is in contact with the shaft 4B, and the other part is not in close contact with the shaft 4B. As a result, the frictional force of the flight 5B with respect to the shaft 4B is set so that the flight 5B is suppressed from rotating due to a weak force such as wind and rotates with respect to the shaft 4B only when a strong force is applied. There is.
  • the flight 5B may be rotatably fitted to the shaft 4B when the darts 1B is in the first state, and the gap may not be formed.
  • the plurality of protrusions 460 of the shaft 4B fit into the second fitting portion 5012 which is the groove of the flight 5B. This restricts the flight 5B from moving in the axial direction of the shaft 4B.
  • the second fitting portion 502B of the flight 5B is one protrusion formed on the outer peripheral surface of the rear end portion of the insertion portion 500B.
  • the rotation restricting portion 413B of the shaft 4B is one recess formed at the rear end portion of the flight mounting portion 41B.
  • the rotation restricting portion 413B is recessed forward from the rear end surface of the flight mounting portion 41B.
  • the rotation restricting portion 413B penetrates the peripheral wall portion of the flight mounting portion 41B in the thickness direction of the peripheral wall portion.
  • the second fitting portion 502B shown in FIG. 15 of the flight 5B is located behind the flight mounting portion 41B of the shaft 4B. In this case, the second fitting portion 502B does not fit into the rotation restricting portion 413B, and the rotation of the shaft 4B in the axial direction is not restricted. Therefore, the flight 5B is attached to the shaft 4B in a state where the rotation of the shaft 4B in the axial direction is allowed.
  • the second fitting portion 502B shown in FIG. 15 of the flight 5B fits into the rotation restricting portion 413B of the shaft 4B, and the movement of the shaft 4B in the axial direction is restricted. Will be done. Therefore, the flight 5B is attached to the shaft 4B in a state where the rotation of the shaft 4B in the axial direction is restricted.
  • the user changes the darts 1B from the first state shown in FIG. 13 to the second state shown in FIG. 14, for example, as shown below.
  • the user rotates the flight 5B of the darts 1B in the first state in the axial direction of the shaft 4B with respect to the shaft 4B, and aligns the positions of the second fitting portion 502B and the rotation restricting portion 413B.
  • the user moves the flight 5B forward with respect to the shaft 4B to fit the second fitting portion 502B into the rotation restricting portion 413B.
  • the darts 1B changes from the first state to the second state when the portion between the two fitting portions 5011 and 5012 in the flight 5B gets over the plurality of protrusions 460.
  • each protrusion 460 is such that when the darts 1B is in the first state, only when a forward force of a predetermined magnitude or more is applied to the flight 5B, the two fitting portions 5011 in the flight 5B. , 5012 is set to overcome the plurality of protrusions 460.
  • the rotation restricting portion 413B is one recess partially formed in the circumferential direction of the shaft 4B, and includes the second fitting portion 502B of the flight 5B and the rotation restricting portion 413B of the shaft 4B. Is difficult to match the positions of the shaft 4B in the circumferential direction. Therefore, even if the flight 5B of the darts 1B in the first state unexpectedly tries to move forward with respect to the shaft 4B, the second fitting portion 502B hits the rear end surface of the flight mounting portion 41B and is in front of the flight 5B. Movement to is easily regulated. Therefore, when the darts 1B is in the first state, the flight 5B suddenly moves forward with respect to the shaft 4B, and it is difficult to enter the second state.
  • At least a part of the protrusion 460 out of the plurality of protrusions 460 and the rotation restricting portion 413B are formed at the same position in the circumferential direction of the shaft 4B. It should be noted that all of the plurality of protrusions 460 may be formed at positions different from those of the rotation restricting portion 413B in the circumferential direction of the shaft 4B.
  • the portion 503 located in front of the first fitting portion 5011 in the insertion portion 500B of the flight 5B is gradually or continuously thickened toward the rear end.
  • the gap between the outer peripheral surface of the portion 503 and the inner peripheral surface of the insertion hole 410B is at the rear end of the portion 503. The closer it is, the smaller it becomes. Therefore, in the second state in which the insertion portion 500B is deeply inserted into the insertion hole 410B of the shaft 4B, it is difficult for the insertion portion 500B to move in the axial direction of the shaft 4B as compared with the first state. Therefore, when the darts 1B is in the second state, it is suppressed that the flight 5B suddenly moves backward with respect to the shaft 4B and the darts 1B is in the first state.
  • the darts 1 of the embodiment, the darts 1A of the modified example 1 and the darts 1B of the modified example 2 can be appropriately changed without departing from the gist of the present disclosure.
  • the shape, size, position, number, material, etc. of each element of darts 1, 1A, 1B can be changed as appropriate.
  • the darts (1,1A, 1B) of the first aspect have the following configurations.
  • the darts (1,1A, 1B) include a barrel (3), a tip (2) that can be attached to the barrel (3), and a shaft (4,4B, 43,44) that can be attached to the barrel (3). It is equipped with a flight (5,5A, 5B, 52,53) that can be attached to the shaft (4,4B, 43,44).
  • the darts (1,1A, 1B) can be changed into a first state and a second state. In the first state, the flight (5,5B) is attached to the shaft (4,4B, 43,44) with rotation allowed. In the second state, the flight (5,5B) is attached to the shaft (4,4B, 43,44) with the rotation restricted.
  • the darts (1,1A, 1B) of this aspect can be used in either a state in which rotation of the flight (5,5B) with respect to the shaft (4,4B) is permitted or a state in which the rotation is restricted.
  • the darts (1,1A, 1B) of the second aspect can be realized by the combination with the first aspect.
  • the darts (1,1A, 1B) of the second aspect have the following configurations.
  • the shaft (4,4B) can be attached by changing the position of the flight (5,5B) in the axial direction of the shaft (4,4B).
  • the darts (1,1A, 1B) can be changed between the first state and the second state depending on the position where the flight (5,5B) is attached to the shaft (4,4B).
  • the darts (1,1A, 1B) of this aspect are relative to the shaft (4,4B) of the flight (5,5B) by changing the mounting position of the flight (5,5B) to the shaft (4,4B). It is possible to change between a state in which rotation is permitted and a state in which rotation is restricted.
  • the darts (1,1A, 1B) of the third aspect can be realized by the combination with the second aspect.
  • the darts (1,1A, 1B) of the third aspect have the following configurations.
  • the shaft (4,4B) has insertion holes (410,410B).
  • the flight (5,5B) has an insertion section (500,500B) that can be rotatably inserted into the insertion hole (410,410B).
  • the insertion portion (500,500B) is inserted into the insertion hole (410,410B) by the first insertion amount, and the shaft (4,4B) allows the rotation while flying (5,5B).
  • the insertion portion (500,500B) is inserted into the insertion hole (410,410B) by a second insertion amount larger than the first insertion amount, and the shaft (4,4B) regulates the rotation. While restricting the axial movement of the flight (5,5B) with respect to the shaft (4,4B).
  • the shaft (4,4B) of the flight (5,5B) is formed by changing the insertion amount of the insertion portion (500,500B) into the insertion hole (410,410B). It is possible to change between a state in which rotation is permitted and a state in which the rotation is restricted.
  • the darts (1B) of the fourth aspect can be realized by the combination with the third aspect.
  • the darts (1B) of the fourth aspect has the configuration shown below.
  • the flight (5B) has a first fitting portion (5011) and a second fitting portion (5012).
  • the first fitting portion (5011) is formed on the outer peripheral surface of the insertion portion (500B).
  • the second fitting portion (5012) is formed on the outer peripheral surface of the insertion portion (500B), and is formed at a position different from that of the first fitting portion (5011) in the axial direction.
  • the shaft (4B) has a movement restricting unit (46) and a rotation restricting unit (413B).
  • the movement restricting unit (46) is fitted with the first fitting portion (5011) in the first state to regulate the axial movement of the flight (5B), and is second fitted in the second state. It fits with the joint portion (5012) to regulate the axial movement of the flight (5B).
  • the rotation control unit (413B) regulates the rotation of the insertion unit (500B) with respect to the insertion hole (410B) in the second state.
  • the first fitting portion (5011) and the second fitting portion (5012) included in the flight (5B), and the movement restricting portion (46) and the rotation restricting portion (413B) included in the shaft (4B) are provided. It can be used to change the darts (1B) into a state in which rotation of the flight (5B) with respect to the shaft (4B) is allowed and a state in which the rotation is restricted.
  • the darts (1,1A, 1B) of the fifth aspect can be realized by combining with any one of the first to fourth aspects.
  • the darts (1,1A, 1B) of the fifth aspect have the following configurations. At least one of the tip (2), shaft (4,4B, 43,44) and flight (5,5B, 5A, 52,53) is formed from a material containing synthetic resin and naturally occurring substances. There is.
  • a material containing a substance existing in nature is used as the material of each of the tip (2), the shaft (4,4B, 43,44) and the flight (5,5A, 5B, 52,53). This helps to preserve the natural environment.
  • the shaft for darts (4,4B, 43,44) of the sixth aspect has the following configuration.
  • the shaft (4,4B, 43,44) includes a flight mounting portion (41, 41A, 41B) to which a flight for darts (5, 5A, 5B, 52, 53) can be mounted.
  • the shaft (4,43,44) can be changed between the first state and the second state. In the first state, the flight (5,5A, 5B, 52,53) is attached to the flight attachment portion (41,41A, 41B) in a state where rotation is allowed. In the second state, the flight (5,5A, 5B, 52,53) is attached to the flight attachment portion (41,41A, 41B) in a state where the rotation is restricted.
  • the shaft (4,4B, 43,44) for darts in this embodiment is in a state where the flight (5,5A, 5B, 52,53) is allowed to rotate with respect to the shaft (4,4B, 43,44). It can be used in either the state where rotation is restricted.
  • the darts (1A) of the seventh aspect has the following configuration.
  • the darts (1A) are a barrel (3), a tip (2) that can be attached to the barrel (3), a shaft (third shaft) that can be attached to the barrel (3), and a plurality of flights that can be attached to the shaft. (Second flight 52 and third flight 53).
  • the shaft has a shaft body (second shaft 44) to which the barrel (3) can be attached, and a plurality of attachments (first attachment 61 and second attachment 62). Each of the plurality of attachments (61, 62) can be attached to the shaft body (44).
  • the plurality of attachments (61, 62) include a first attachment (61) and a second attachment (62).
  • the first attachment (61) can be attached in a state where one flight (second flight 52) included in the plurality of flights (52, 53) is allowed to rotate with respect to the first attachment (61).
  • the second attachment (62) is a state in which the rotation of a flight (third flight 53) different from the one flight (52) included in the plurality of flights (52, 53) with respect to the second attachment (62) is restricted. It can be installed with.
  • the flight (52,53) is allowed to rotate with respect to the shaft, and the rotation is restricted. It can be in any of the states that have been set.
  • the darts (1A) of the eighth aspect can be realized in combination with the seventh aspect.
  • the darts (1A) of the eighth aspect has the configuration shown below.
  • the darts (1A) further comprises a flight (5A) separate from the plurality of flights (52,53).
  • the shaft body (44) has an insertion hole (410A) into which each of the first attachment (61), the second attachment (62) and the flight (5A) different from the plurality of flights (52,53) can be inserted.
  • the shaft body (44) is the rotation of the first attachment (61) fitted in the insertion hole (410A) with respect to the shaft body (44) and the shaft body of the second attachment (62) fitted in the insertion hole (410A). It regulates rotation with respect to (44) and rotation with respect to the shaft body (44) of another flight (5A) fitted in the insertion hole (410A).
  • the darts (1A) of this aspect can be used by attaching a flight (5A) different from the plurality of flights (52,53) to the shaft body (44).
  • the darts (1A) of the ninth aspect can be realized by the combination with the eighth aspect.
  • the darts (1A) of the ninth aspect has the configuration shown below.
  • the darts (1A) further include a second shaft (44) separate from the shaft (third shaft).
  • the second shaft (44) can be attached to the barrel (3).
  • the second shaft (44) has an insertion hole (410A) into which a flight (5A) different from the plurality of flights (52, 53) can be fitted while allowing rotation with respect to the second shaft (44).
  • the second shaft (44) is attached to the barrel (3), and a flight (5A) different from the plurality of flights (52,53) is attached to the second shaft (44). It can be installed in a state that allows rotation with respect to the.
  • the seventh to ninth aspects may be carried out without being combined with any one of the first to sixth aspects, or may be carried out in combination with any one of the first to sixth aspects. May be good.
  • the darts (1, 1A) of the tenth aspect can be realized by the combination with the third aspect.
  • the darts (1,1A) of the tenth aspect have the following configurations.
  • the shaft (4) has a first movement restricting unit (42), a second movement restricting unit (412), and a rotation restricting unit (416).
  • the first movement restricting portion (42) is formed on the inner surface of the insertion hole (410), and restricts the insertion portion (500) from moving in the axial direction in the first state.
  • the second movement restricting portion (412) is formed on the inner surface of the insertion hole (410), and restricts the insertion portion (500) from moving in the axial direction in the second state.
  • the rotation control unit (416) regulates the rotation of the insertion unit (500) with respect to the insertion hole (410) in the second state.
  • the darts (1,1A) of this aspect utilize the first movement control unit (42), the second movement control unit (412), and the rotation control unit (416) of the shaft (4) to fly (5).
  • the state in which the rotation of the shaft (4) is allowed and the state in which the rotation is restricted can be changed.

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Abstract

The purpose of the present disclosure is to provide: a dart that can be used such that a flight is allowed rotate on a shaft or such that rotation of the flight is restricted; and a shaft for the dart. A dart (1) that comprises a barrel (3), a tip (2) that can be attached to the barrel (3), a shaft (4) that can be attached to the barrel (3), and a flight (5) that can be attached to the shaft (4). The dart (1) can switch between a first state and a second state. In the first state, the flight (5) is attached to the shaft (4) so as to be allowed to rotate. In the second state, the flight (5) is attached to the shaft (4) such that the rotation is restricted.

Description

ダーツ及びダーツ用のシャフトDarts and shafts for darts
　本開示は、ダーツ及びダーツ用のシャフトに関し、詳しくは、ダーツゲームにおいて用いられるダーツ及びダーツの一部品であるシャフトに関する。 This disclosure relates to darts and shafts for darts, and more specifically to shafts that are a part of darts and darts used in darts games.
　特許文献１には、ダーツが開示されている。このダーツは、ポイント、バレル、シャフト及びフライトを備えている。バレルの一端にはポイントが接続され、バレルの他端にはシャフトが接続される。フライトは、シャフトに対して回転可能に接続される。 Patent Document 1 discloses darts. This dart is equipped with points, barrels, shafts and flights. A point is connected to one end of the barrel and a shaft is connected to the other end of the barrel. The flight is rotatably connected to the shaft.
　前述したようにフライトがシャフトに対して回転可能となったダーツは、スピンタイプのダーツと呼ばれる。一方、フライトのシャフトに対する回転が規制されたダーツは、ロックタイプのダーツと呼ばれる。 As mentioned above, darts that allow the flight to rotate with respect to the shaft are called spin type darts. On the other hand, darts whose rotation with respect to the shaft of the flight is restricted are called lock type darts.
　特許文献１に開示されたダーツは、フライトをシャフトに対する回転を許容した状態でしかシャフトに取り付けることができない。すなわち、特許文献１に開示されたダーツはスピンタイプのダーツとしてしか利用することができず、ロックタイプのダーツとして利用できない。 The darts disclosed in Patent Document 1 can be attached to the shaft only in a state where the flight is allowed to rotate with respect to the shaft. That is, the darts disclosed in Patent Document 1 can only be used as spin-type darts, and cannot be used as lock-type darts.
特開２０１４－２３９８３４号公報Japanese Unexamined Patent Publication No. 2014-239834
　本開示は上記事由に鑑みてなされており、フライトをシャフトに対する回転が許容された状態と規制された状態とのいずれの状態でも利用できるダーツ及びダーツ用のシャフトを提供することを目的とする。 The present disclosure has been made in view of the above reasons, and an object of the present invention is to provide darts and a shaft for darts that can be used in both a state in which rotation with respect to the shaft is permitted and a state in which rotation is restricted.
　本開示の一態様に係るダーツは、バレルと、前記バレルに取付可能なチップと、前記バレルに取付可能なシャフトと、前記シャフトに取付可能なフライトとを備える。前記ダーツは、第１状態と、第２状態とに変更可能である。前記第１状態では、前記フライトが前記シャフトに回転が許容された状態で取り付けられる。前記第２状態では、前記フライトが前記シャフトに前記回転が規制された状態で取り付けられる。 The darts according to one aspect of the present disclosure include a barrel, a chip that can be attached to the barrel, a shaft that can be attached to the barrel, and a flight that can be attached to the shaft. The darts can be changed into a first state and a second state. In the first state, the flight is attached to the shaft with rotation allowed. In the second state, the flight is attached to the shaft with the rotation restricted.
　本開示の一態様に係るダーツ用のシャフトは、ダーツ用のフライトを取付可能なフライト取付部を備える。前記シャフトは、第１状態と、第２状態とに変更可能である。前記第１状態では、前記フライトが前記フライト取付部に回転が許容された状態で取り付けられる。前記第２状態では、前記フライトが前記フライト取付部に前記回転が規制された状態で取り付けられる。 The shaft for darts according to one aspect of the present disclosure includes a flight attachment portion to which a flight for darts can be attached. The shaft can be changed between a first state and a second state. In the first state, the flight is attached to the flight attachment portion in a state where rotation is allowed. In the second state, the flight is attached to the flight attachment portion in a state where the rotation is restricted.
図１は、本開示の一実施形態に係るダーツの斜視図である。FIG. 1 is a perspective view of darts according to an embodiment of the present disclosure. 図２は、同上のダーツの分解斜視図である。FIG. 2 is an exploded perspective view of the same darts. 図３は、同上のダーツが備える、シャフトにフライトを取り付ける様子を示した斜視図である。FIG. 3 is a perspective view showing how the flight is attached to the shaft provided by the darts of the same as above. 図４Ａは同上のシャフトの一部切欠側面図であり、図４Ｂは同上のシャフトの背面図である。FIG. 4A is a partially cutaway side view of the same shaft, and FIG. 4B is a rear view of the same shaft. 図５Ａは、同上のシャフトが第１状態にあるときにおけるシャフトとフライトとの接続部分を示した断面図であり、図５Ｂは、同上のシャフトが第２状態にあるときにおけるシャフトとフライトとの接続部分を示した断面図である。FIG. 5A is a cross-sectional view showing a connection portion between the shaft and the flight when the same shaft is in the first state, and FIG. 5B is a cross-sectional view showing the shaft and the flight when the same shaft is in the second state. It is sectional drawing which showed the connection part. 図６は、変形例１のダーツの一部切欠断面図である。FIG. 6 is a partially cutaway cross-sectional view of the darts of the modified example 1. 図７Ａは変形例１のダーツが備える第１シャフトの一部切欠側面図であり、図７Ｂは変形例１のダーツが備える第１シャフトの背面図である。FIG. 7A is a partially cutaway side view of the first shaft included in the darts of the modified example 1, and FIG. 7B is a rear view of the first shaft included in the darts of the modified example 1. 図８Ａは変形例１のダーツが備える第２シャフトの一部切欠側面図であり、図８Ｂは変形例１のダーツが備える第２シャフトの背面図である。FIG. 8A is a partially cutaway side view of the second shaft included in the darts of the modified example 1, and FIG. 8B is a rear view of the second shaft included in the darts of the modified example 1. 図９Ａは、同上のダーツが備えるフライトの斜視図であり、図９Ｂは、同上のフライトの前端部の断面図である。FIG. 9A is a perspective view of the flight provided with the darts of the same, and FIG. 9B is a cross-sectional view of the front end portion of the flight of the same. 図１０Ａは、同上のフライトを第２シャフトに取り付けた状態における、第２シャフトとフライトとの接続部分を示した断面図であり、図１０Ｂは、図１０Ａにおける領域Ａ１の拡大図である。FIG. 10A is a cross-sectional view showing a connection portion between the second shaft and the flight in a state where the same flight is attached to the second shaft, and FIG. 10B is an enlarged view of the region A1 in FIG. 10A. 図１１Ａは同上のダーツが備える第１アタッチメントの側面図であり、図１１Ｂは第１アタッチメントの正面図であり、図１１Ｃは第１アタッチメントの背面図であり、図１１Ｄは第１アタッチメントの断面図である。11A is a side view of the first attachment provided in the same darts, FIG. 11B is a front view of the first attachment, FIG. 11C is a rear view of the first attachment, and FIG. 11D is a sectional view of the first attachment. Is. 図１２は、同上のダーツが備える第２アタッチメントの側面図である。FIG. 12 is a side view of the second attachment provided in the same darts. 図１３は、変形例２のダーツが備える、シャフト及びフライトの断面図である。FIG. 13 is a cross-sectional view of a shaft and a flight provided in the darts of the second modification. 図１４は、同上のダーツが第２状態にあるときにおける拡大断面図である。FIG. 14 is an enlarged cross-sectional view of the same darts in the second state. 図１５は、同上のシャフトにフライトを取り付ける様子を示した斜視図である。FIG. 15 is a perspective view showing how the flight is attached to the same shaft.
　以下、本開示のダーツ及びダーツ用のシャフトについて説明する。 Hereinafter, the darts of the present disclosure and the shaft for darts will be described.
　（１）実施形態
　図１に実施形態のダーツ１を示す。ダーツ１は、例えば、ダーツゲームにおいてダーツボード等の的に向かって投げる矢として用いられる。図２に示すように、ダーツ１は、ダーツ１を構成する部品として、チップ２、バレル３、シャフト４及びフライト５を備えている。チップ２は、ダーツチップ又はポイントとも呼ばれる。バレル３、シャフト４及びフライト５は、それぞれ、ダーツバレル、ダーツシャフト及びダーツフライトとも呼ばれる。 (1) Embodiment Figure 1 shows the darts 1 of the embodiment. The darts 1 is used, for example, as an arrow thrown toward a target such as a darts board in a darts game. As shown in FIG. 2, the darts 1 includes a tip 2, a barrel 3, a shaft 4, and a flight 5 as parts constituting the darts 1. The chip 2 is also called a darts chip or a point. The barrel 3, shaft 4, and flight 5 are also referred to as darts barrel, darts shaft, and darts flight, respectively.
　ダーツ１は、図１に示すように、チップ２、バレル３、シャフト４及びフライト５を組み合わせることで、組み立てられる。シャフト４は、中心軸ＡＸを有する。本開示では、中心軸ＡＸが延びる方向をシャフト４の軸方向という。ダーツ１が組み立てられた状態において、チップ２、バレル３、シャフト４及びフライト５は、シャフト４の軸方向に順に並ぶ。本開示では、ダーツ１が組み立てられた状態における方向を用いて、ダーツ１の各要素について説明する。本開示では、シャフト４の軸方向と平行で、かつ、フライト５からチップ２に向かう方向を前方と定義し、シャフト４の軸方向と平行で、かつ、チップ２からフライト５に向かう方向を後方と定義する。 As shown in FIG. 1, the darts 1 are assembled by combining the tip 2, the barrel 3, the shaft 4, and the flight 5. The shaft 4 has a central axis AX. In the present disclosure, the direction in which the central axis AX extends is referred to as the axial direction of the shaft 4. In the assembled state of the darts 1, the tip 2, the barrel 3, the shaft 4, and the flight 5 are arranged in order in the axial direction of the shaft 4. In the present disclosure, each element of the darts 1 will be described using the orientation of the darts 1 in the assembled state. In the present disclosure, the direction parallel to the axial direction of the shaft 4 and from the flight 5 to the tip 2 is defined as forward, and the direction parallel to the axial direction of the shaft 4 and from the tip 2 to the flight 5 is rearward. Is defined as.
　チップ２は、ダーツ１において的に刺さる部分である。チップ２は、ダーツ１の前端部を構成する。チップ２は、図２に示すように、バレル３に脱着可能なバレル取付部２０を有している。バレル取付部２０は、バレル３に取り付けられる。バレル取付部２０は、チップ２の後端部であり、シャフト４の軸方向に延びた棒状に形成されている。バレル取付部２０は、バレル取付部２０の外周面に形成された雄ねじ２００を有している。なお、本開示における「前端部」とは、「前端」を含む一定の範囲を持つ部分を意味する。「後端部」等、他の「…端部」を伴った表現についても同様である。 Chip 2 is the part that sticks in the darts 1. The chip 2 constitutes the front end portion of the darts 1. As shown in FIG. 2, the chip 2 has a barrel mounting portion 20 that can be attached to and detached from the barrel 3. The barrel mounting portion 20 is mounted on the barrel 3. The barrel mounting portion 20 is a rear end portion of the chip 2, and is formed in a rod shape extending in the axial direction of the shaft 4. The barrel mounting portion 20 has a male screw 200 formed on the outer peripheral surface of the barrel mounting portion 20. The "front end" in the present disclosure means a portion having a certain range including the "front end". The same applies to expressions with other "... end" such as "rear end".
　バレル３は、ダーツ１において利用者が持つ部分であり、チップ２の後方に位置する。バレル３は、シャフト４の軸方向に延びた棒状に形成されている。バレル３は、金属製である。具体的にバレル３は、比重の高い金属であるタングステンを主原料とした焼結品である。なお、バレル３は、例えば、真鍮、チタン又はニッケル等のタングステン以外の金属から形成されてもよいし、金属以外の材料から形成されてもよい。 The barrel 3 is a part of the darts 1 that the user has, and is located behind the chip 2. The barrel 3 is formed in a rod shape extending in the axial direction of the shaft 4. The barrel 3 is made of metal. Specifically, the barrel 3 is a sintered product made mainly of tungsten, which is a metal having a high specific density. The barrel 3 may be formed of a metal other than tungsten such as brass, titanium or nickel, or may be formed of a material other than metal.
　バレル３は、バレル３の外周面に形成された複数の溝３０を有している。複数の溝３０は、バレル３を保持した利用者の手指を滑り難くする。なお、バレル３は、複数の溝３０の代わりに又は複数の溝３０に加えて、バレル３の外周面に形成された複数の突部を有してもよい。また、バレル３は、複数の溝３０を有さなくてもよい。 The barrel 3 has a plurality of grooves 30 formed on the outer peripheral surface of the barrel 3. The plurality of grooves 30 make the fingers of the user holding the barrel 3 less slippery. The barrel 3 may have a plurality of protrusions formed on the outer peripheral surface of the barrel 3 instead of the plurality of grooves 30 or in addition to the plurality of grooves 30. Further, the barrel 3 does not have to have a plurality of grooves 30.
　バレル３は、チップ２に脱着可能なチップ取付部３１を更に有している。チップ取付部３１は、バレル３の前端部である。チップ取付部３１は、シャフト４の軸方向に延びた筒状に形成されている。チップ取付部３１は、筒状のチップ取付部３１の内側に形成された穴３１０を有している。穴３１０は、バレル３の前端面から後方に向かって延びている。チップ取付部３１は、穴３１０の内周面に形成された雌ねじ３１１を有している。チップ取付部３１の穴３１０にチップ２のバレル取付部２０がねじ込まれ、チップ取付部３１の雌ねじ３１１とバレル取付部２０の雄ねじ２００とが嵌まり合うことで、チップ２はバレル３に取り付けられる。 The barrel 3 further has a chip mounting portion 31 that can be attached to and detached from the chip 2. The tip mounting portion 31 is a front end portion of the barrel 3. The tip mounting portion 31 is formed in a cylindrical shape extending in the axial direction of the shaft 4. The chip mounting portion 31 has a hole 310 formed inside the cylindrical chip mounting portion 31. The hole 310 extends rearward from the front end surface of the barrel 3. The tip mounting portion 31 has a female screw 311 formed on the inner peripheral surface of the hole 310. The barrel mounting portion 20 of the tip 2 is screwed into the hole 310 of the tip mounting portion 31, and the female screw 311 of the tip mounting portion 31 and the male screw 200 of the barrel mounting portion 20 are fitted so that the tip 2 is mounted on the barrel 3. ..
　バレル３は、シャフト４に脱着可能なシャフト取付部３２を更に有している。シャフト取付部３２は、バレル３の後端部であり、シャフト４の軸方向に延びた筒状に形成されている。シャフト取付部３２は、筒状のシャフト取付部３２の内側に形成された穴３２０を有している。穴３２０は、バレル３の後端面から前方に向かって延びている。シャフト取付部３２は、穴３２０の内周面に形成された雌ねじ３２１を有している。 The barrel 3 further has a shaft mounting portion 32 that can be attached to and detached from the shaft 4. The shaft mounting portion 32 is a rear end portion of the barrel 3, and is formed in a cylindrical shape extending in the axial direction of the shaft 4. The shaft mounting portion 32 has a hole 320 formed inside the cylindrical shaft mounting portion 32. The hole 320 extends forward from the rear end surface of the barrel 3. The shaft mounting portion 32 has a female screw 321 formed on the inner peripheral surface of the hole 320.
　シャフト４は、ダーツ１においてバレル３とフライト５とをつなぐ部分である。シャフト４は、バレル３の後方に位置する。シャフト４は、棒状に形成されている。シャフト４は、バレル３に脱着可能なバレル取付部４０を有している。バレル取付部４０は、シャフト４の前端部であり、シャフト４の軸方向に延びた棒状に形成されている。バレル取付部４０は、バレル取付部４０の外周面に形成された雄ねじ４００を有している。シャフト取付部３２の穴３２０にバレル取付部４０がねじ込まれ、シャフト取付部３２の雌ねじ３２１とバレル取付部４０の雄ねじ４００とが嵌まり合うことで、シャフト４はバレル３に取り付けられる。 The shaft 4 is a part of the darts 1 that connects the barrel 3 and the flight 5. The shaft 4 is located behind the barrel 3. The shaft 4 is formed in a rod shape. The shaft 4 has a barrel mounting portion 40 that can be attached to and detached from the barrel 3. The barrel mounting portion 40 is a front end portion of the shaft 4, and is formed in a rod shape extending in the axial direction of the shaft 4. The barrel mounting portion 40 has a male screw 400 formed on the outer peripheral surface of the barrel mounting portion 40. The barrel mounting portion 40 is screwed into the hole 320 of the shaft mounting portion 32, and the female screw 321 of the shaft mounting portion 32 and the male screw 400 of the barrel mounting portion 40 are fitted so that the shaft 4 is mounted on the barrel 3.
　シャフト４は、フライト５に脱着可能なフライト取付部４１を有している。フライト取付部４１は、シャフト４の後端部であり、シャフト４の軸方向に延びた筒状に形成されている。図４Ａ及び図４Ｂに示すように、フライト取付部４１は、筒状のフライト取付部４１の内側に形成された挿入穴４１０を有している。挿入穴４１０は、シャフト４の後端面から前方に向かって延びている。挿入穴４１０は、シャフト４の後方に向かって開口している。 The shaft 4 has a flight mounting portion 41 that can be attached to and detached from the flight 5. The flight mounting portion 41 is a rear end portion of the shaft 4, and is formed in a cylindrical shape extending in the axial direction of the shaft 4. As shown in FIGS. 4A and 4B, the flight mounting portion 41 has an insertion hole 410 formed inside the cylindrical flight mounting portion 41. The insertion hole 410 extends forward from the rear end surface of the shaft 4. The insertion hole 410 opens toward the rear of the shaft 4.
　図２に示すフライト５は、ダーツ１の羽根として機能する。フライト５は、シャフト４の後方に位置する。フライト５は、シャフト４の軸方向に延びた棒状の軸部５０を有している。 Flight 5 shown in FIG. 2 functions as a blade of darts 1. Flight 5 is located behind the shaft 4. The flight 5 has a rod-shaped shaft portion 50 extending in the axial direction of the shaft 4.
　軸部５０は、挿入部５００を有している。挿入部５００は、軸部５０の前端部を構成している。挿入部５００は、シャフト４に脱着可能なシャフト取付部として機能する。挿入部５００は、シャフト４の軸方向に延びた棒状に形成されている。フライト５は、図５Ａ及び図５Ｂに示すように、挿入部５００がシャフト４の挿入穴４１０に嵌まることで、シャフト４に取り付けられる。 The shaft portion 50 has an insertion portion 500. The insertion portion 500 constitutes the front end portion of the shaft portion 50. The insertion portion 500 functions as a shaft mounting portion that can be attached to and detached from the shaft 4. The insertion portion 500 is formed in a rod shape extending in the axial direction of the shaft 4. As shown in FIGS. 5A and 5B, the flight 5 is attached to the shaft 4 by fitting the insertion portion 500 into the insertion hole 410 of the shaft 4.
　図２に示すように、フライト５は、複数の羽根部５１を更に有している。複数の羽根部５１は、飛行時のダーツ１の姿勢を安定させる。複数の羽根部５１は、軸部５０における挿入部５００よりも後方の部分から軸部５０の外周側に向かって突出している。フライト５は、複数の羽根部５１として、４枚の羽根部５１を有している。４枚の羽根部５１は、シャフト４の軸周り方向に間隔をあけて並んでいる。なお、フライト５が有する羽根部５１の枚数は限定されない。 As shown in FIG. 2, the flight 5 further has a plurality of blade portions 51. The plurality of blades 51 stabilize the attitude of the darts 1 during flight. The plurality of blade portions 51 project from a portion of the shaft portion 50 behind the insertion portion 500 toward the outer peripheral side of the shaft portion 50. Flight 5 has four blades 51 as a plurality of blades 51. The four blade portions 51 are arranged at intervals in the axial direction of the shaft 4. The number of blades 51 included in the flight 5 is not limited.
　チップ２、シャフト４及びフライト５の各々は、例えば、合成樹脂と、自然界に存在する物質とを含む材料から形成される。自然界に存在する物質は、例えば、植物、鉱物又は生物等である。このように、チップ２、シャフト４及びフライト５の各々の材料として、自然界に存在する物質を含む材料を用いることで、自然環境の保全に役立つ。 Each of the chip 2, the shaft 4, and the flight 5 is formed of, for example, a material containing a synthetic resin and a substance existing in nature. Substances existing in nature are, for example, plants, minerals or organisms. As described above, by using a material containing a substance existing in the natural world as a material for each of the chip 2, the shaft 4, and the flight 5, it is useful for preserving the natural environment.
　具体的にチップ２、シャフト４及びフライト５の各々の材料としては、チップ２、シャフト４及びフライト５の各々の強度を高めるため、木・合成樹脂複合材料、紙・合成樹脂複合材料又は炭酸カルシウム・合成樹脂複合材料等が用いられる。木・合成樹脂複合材料は、例えば、ポリエチレン又はポリプロピレン等の熱可塑性樹脂と、木粉とを含む。木・合成樹脂複合材料の木に由来する成分は、木・合成樹脂複合材料の全量に対して３０ｗｔ％以上含まれることが好ましく、５０ｗｔ％以上含まれることが更に好ましい。 Specifically, as the materials of the chip 2, the shaft 4, and the flight 5, in order to increase the strength of each of the chip 2, the shaft 4, and the flight 5, a wood / synthetic resin composite material, a paper / synthetic resin composite material, or calcium carbonate is used. -Synthetic resin composite materials, etc. are used. The wood / synthetic resin composite material includes, for example, a thermoplastic resin such as polyethylene or polypropylene and wood powder. The wood-derived component of the wood / synthetic resin composite material is preferably contained in an amount of 30 wt% or more, more preferably 50 wt% or more, based on the total amount of the wood / synthetic resin composite material.
　紙・合成樹脂複合材料は、例えば、ポリプロピレン又はポリエチレン等のポリオレフィン系樹脂と、粉状の紙とを含む。紙・合成樹脂複合材料の紙に由来する成分は、紙・混成合成樹脂の全量に対して５０ｗｔ％以上含まれることが好ましい。 The paper / synthetic resin composite material includes, for example, a polyolefin resin such as polypropylene or polyethylene, and powdered paper. It is preferable that the component derived from paper of the paper / synthetic resin composite material is contained in an amount of 50 wt% or more based on the total amount of the paper / mixed synthetic resin.
　炭酸カルシウム・合成樹脂複合材料は、例えば、ポリエチレン、ポリプロピレン、ポリスチレン又はポリエチレンテレフタレート等の熱可塑性樹脂と、炭酸カルシウム（石灰石）とを含む。炭酸カルシウムは、炭酸カルシウム・合成樹脂複合材料の全量に対して５０ｗｔ％以上含まれることが好ましい。 The calcium carbonate / synthetic resin composite material contains, for example, a thermoplastic resin such as polyethylene, polypropylene, polystyrene or polyethylene terephthalate, and calcium carbonate (limestone). Calcium carbonate is preferably contained in an amount of 50 wt% or more based on the total amount of the calcium carbonate / synthetic resin composite material.
　チップ２、シャフト４及びフライト５のうちの一つだけが、合成樹脂と、自然界に存在する物質とを含む材料から形成されてもよい。すなわち、チップ２、シャフト４及びフライト５のうちの少なくとも一つが、合成樹脂と、自然界に存在する物質とを含む材料から形成されればよい。なお、チップ２、シャフト４及びフライト５の各々の材料は限定されない。チップ２、シャフト４及びフライト５の各々は、例えば、合成樹脂を含むが自然界に存在する物質を含まない材料、紙又は金属等から形成されてもよい。 Only one of the chip 2, the shaft 4 and the flight 5 may be formed of a material containing a synthetic resin and a naturally occurring substance. That is, at least one of the chip 2, the shaft 4, and the flight 5 may be formed of a material containing a synthetic resin and a substance existing in nature. The materials of the tip 2, the shaft 4, and the flight 5 are not limited. Each of the chip 2, the shaft 4, and the flight 5 may be formed of, for example, a material, paper, metal, or the like, which contains a synthetic resin but does not contain a naturally occurring substance.
　フライト５の挿入部５００は、図５Ａ及び図５Ｂに示すように、シャフト４の挿入穴４１０に対して挿入量を変更して挿入可能である。このため、フライト５はシャフト４に対してシャフト４の軸方向における位置を変更して取り付けることができる。図５Ａにおいて、挿入部５００は、挿入穴４１０に対して所定の第１挿入量だけ挿入された状態で嵌め込まれている。図５Ｂにおいて、挿入部５００は、挿入穴４１０に対して第１挿入量よりも大きい所定の第２挿入量挿入された状態で嵌め込まれている。すなわち、ダーツ１及びシャフト４の各々は、挿入部５００が挿入穴４１０に第１挿入量だけ挿入された図５Ａに示す第１状態と、挿入部５００が挿入穴４１０に第２挿入量挿入された図５Ｂに示す第２状態とに変更可能である。 As shown in FIGS. 5A and 5B, the insertion portion 500 of the flight 5 can be inserted by changing the insertion amount with respect to the insertion hole 410 of the shaft 4. Therefore, the flight 5 can be attached to the shaft 4 by changing the position of the shaft 4 in the axial direction. In FIG. 5A, the insertion portion 500 is fitted into the insertion hole 410 in a state of being inserted by a predetermined first insertion amount. In FIG. 5B, the insertion portion 500 is fitted in a state where a predetermined second insertion amount larger than the first insertion amount is inserted into the insertion hole 410. That is, in each of the darts 1 and the shaft 4, the first state shown in FIG. 5A in which the insertion portion 500 is inserted into the insertion hole 410 by the first insertion amount, and the insertion portion 500 is inserted into the insertion hole 410 by the second insertion amount. It is possible to change to the second state shown in FIG. 5B.
　挿入部５００は、シャフト４の挿入穴４１０に、シャフト４の軸周り方向に回転可能に挿入し得る。挿入部５００は、シャフト４によってシャフト４の軸方向に移動することが規制される嵌合部５０１を有している。以下、嵌合部５０１を第１嵌合部５０１という。第１嵌合部５０１は、図３に示すように、挿入部５００の外周面に形成され、挿入部５００の外周側に向かって突出した突条である。第１嵌合部５０１は、挿入部５００の後部に位置している。第１嵌合部５０１は、挿入部５００の周方向に延びており、挿入部５００の周方向の全長にわたっている。 The insertion portion 500 can be rotatably inserted into the insertion hole 410 of the shaft 4 in the axial direction of the shaft 4. The insertion portion 500 has a fitting portion 501 that is restricted from moving in the axial direction of the shaft 4 by the shaft 4. Hereinafter, the fitting portion 501 is referred to as a first fitting portion 501. As shown in FIG. 3, the first fitting portion 501 is a ridge formed on the outer peripheral surface of the insertion portion 500 and projecting toward the outer peripheral side of the insertion portion 500. The first fitting portion 501 is located at the rear portion of the insertion portion 500. The first fitting portion 501 extends in the circumferential direction of the insertion portion 500 and extends over the entire length of the insertion portion 500 in the circumferential direction.
　図４Ａ及び図４Ｂに示すように、シャフト４のフライト取付部４１は、第１移動規制部４２を有している。第１移動規制部４２は、挿入穴４１０の内面に形成され、図５Ａに示す第１状態において第１嵌合部５０１がシャフト４の軸方向に移動することを規制する。図４Ａ及び図４Ｂに示すように、第１移動規制部４２は、複数の第１突起４２１と複数の第２突起４２２とを有している。本実施形態の第１移動規制部４２は、三つの第１突起４２１と、四つの第２突起４２２とを有している。複数の第１突起４２１は、挿入穴４１０の内周面にシャフト４の周方向に間隔をあけて並んでいる。複数の第２突起４２２は、複数の第１突起４２１よりも後方に位置している。複数の第２突起４２２は、挿入穴４１０の内周面にシャフト４の周方向に間隔をあけて並んでいる。 As shown in FIGS. 4A and 4B, the flight mounting portion 41 of the shaft 4 has a first movement restricting portion 42. The first movement restricting portion 42 is formed on the inner surface of the insertion hole 410, and restricts the movement of the first fitting portion 501 in the axial direction of the shaft 4 in the first state shown in FIG. 5A. As shown in FIGS. 4A and 4B, the first movement restricting unit 42 has a plurality of first protrusions 421 and a plurality of second protrusions 422. The first movement restricting unit 42 of the present embodiment has three first protrusions 421 and four second protrusions 422. The plurality of first protrusions 421 are arranged on the inner peripheral surface of the insertion hole 410 at intervals in the circumferential direction of the shaft 4. The plurality of second protrusions 422 are located behind the plurality of first protrusions 421. The plurality of second protrusions 422 are arranged on the inner peripheral surface of the insertion hole 410 at intervals in the circumferential direction of the shaft 4.
　ダーツ１が図５Ａに示す第１状態にあるとき、フライト５の第１嵌合部５０１は、シャフト４の複数の第１突起４２１と複数の第２突起４２２との間に、シャフト４の軸周り方向に移動可能に嵌まる。これにより、第１嵌合部５０１が複数の第１突起４２１及び複数の第２突起４２２によってシャフト４の軸方向に移動することが規制され、フライト５がシャフト４の軸方向に移動することが規制される。 When the darts 1 are in the first state shown in FIG. 5A, the first fitting portion 501 of flight 5 is the axis of the shaft 4 between the plurality of first protrusions 421 and the plurality of second protrusions 422 of the shaft 4. It fits in a movable direction. As a result, the first fitting portion 501 is restricted from moving in the axial direction of the shaft 4 by the plurality of first protrusions 421 and the plurality of second protrusions 422, and the flight 5 may move in the axial direction of the shaft 4. Be regulated.
　ダーツ１が第１状態にあるとき、挿入穴４１０の内周面と第１嵌合部５０１との間には僅かな隙間が形成され、第１嵌合部５０１は、一部だけがシャフト４に接し、第１嵌合部５０１の他の部分はシャフト４に密接しない。これにより、フライト５が、風等の弱い力によって回転することが抑制され、強い力が加わった場合にのみシャフト４に対して回転するように、フライト５のシャフト４に対する摩擦力が設定されている。なお、フライト５は、ダーツ１が第１状態にあるときに、シャフト４に対して回転可能に嵌め込まれていればよく、前記隙間は形成されなくてもよい。 When the darts 1 are in the first state, a slight gap is formed between the inner peripheral surface of the insertion hole 410 and the first fitting portion 501, and only a part of the first fitting portion 501 is the shaft 4. The other portion of the first fitting portion 501 is in close contact with the shaft 4. As a result, the frictional force of the flight 5 with respect to the shaft 4 is set so that the flight 5 is suppressed from rotating due to a weak force such as wind and rotates with respect to the shaft 4 only when a strong force is applied. There is. The flight 5 may be rotatably fitted to the shaft 4 when the darts 1 are in the first state, and the gap may not be formed.
　なお、第１嵌合部５０１及び第１移動規制部４２の各々の位置、形状及び大きさ等は限定されない。例えば、第１嵌合部５０１は、挿入部５００の外周面に形成される複数の突起であってもよい。また、第１嵌合部５０１が挿入部５００の外周面に形成された一つ又は複数の突起である場合、第１移動規制部４２は、挿入穴４１０の内周面に形成された溝であってもよい。また、フライト５の第１嵌合部５０１は、例えば、挿入部５００の外周面に形成された凹溝であってもよい。この場合、シャフト４の第１移動規制部４２は、例えば、挿入穴４１０の内周面に形成された突部を有し、この突部が第１嵌合部５０１である凹溝に嵌まる。 The positions, shapes, sizes, etc. of the first fitting portion 501 and the first movement restricting portion 42 are not limited. For example, the first fitting portion 501 may be a plurality of protrusions formed on the outer peripheral surface of the insertion portion 500. Further, when the first fitting portion 501 is one or a plurality of protrusions formed on the outer peripheral surface of the insertion portion 500, the first movement restricting portion 42 is a groove formed on the inner peripheral surface of the insertion hole 410. There may be. Further, the first fitting portion 501 of the flight 5 may be, for example, a concave groove formed on the outer peripheral surface of the insertion portion 500. In this case, the first movement restricting portion 42 of the shaft 4 has, for example, a protrusion formed on the inner peripheral surface of the insertion hole 410, and this protrusion fits into the concave groove which is the first fitting portion 501. ..
　図４Ａ及び図４Ｂに示すように、シャフト４のフライト取付部４１は、第２移動規制部４１２を有している。第２移動規制部４１２は、挿入穴４１０の内面に形成され、図５Ｂに示すように、ダーツ１が第２状態にあるとき、フライト５の第１嵌合部５０１がシャフト４の軸方向に移動することを規制する。図４Ａ及び図４Ｂに示すように、第２移動規制部４１２は、挿入穴４１０の内周面に形成された複数の第３突起４１９と、前述した複数の第１突起４２１とを有している。本実施形態の第２移動規制部４１２は、八つの第３突起４１９を有している。複数の第３突起４１９は、シャフト４の周方向に間隔をあけて並んでいる。複数の第３突起４１９は、複数の第１突起４２１よりも前方に位置している。 As shown in FIGS. 4A and 4B, the flight mounting portion 41 of the shaft 4 has a second movement restricting portion 412. The second movement restricting portion 412 is formed on the inner surface of the insertion hole 410, and as shown in FIG. 5B, when the darts 1 is in the second state, the first fitting portion 501 of the flight 5 is oriented in the axial direction of the shaft 4. Regulate moving. As shown in FIGS. 4A and 4B, the second movement restricting unit 412 has a plurality of third protrusions 419 formed on the inner peripheral surface of the insertion hole 410, and the plurality of first protrusions 421 described above. There is. The second movement control unit 412 of the present embodiment has eight third protrusions 419. The plurality of third protrusions 419 are arranged at intervals in the circumferential direction of the shaft 4. The plurality of third protrusions 419 are located in front of the plurality of first protrusions 421.
　ダーツ１が図５Ｂに示す第２状態にあるとき、フライト５の第１嵌合部５０１は、複数の第３突起４１９と複数の第１突起４２１との間に嵌まる。これにより、第１嵌合部５０１がシャフト４の軸方向に移動することが規制され、フライト５がシャフト４の軸方向に移動することが規制される。なお、第２移動規制部４１２の位置、形状及び大きさ等は限定されない。例えば、第２移動規制部４１２は、挿入穴４１０の内周面に形成された溝であってもよい。この場合、フライト５は、例えば、溝にシャフト４の軸周り方向に移動可能に嵌め込み得る突部を有する。 When the darts 1 are in the second state shown in FIG. 5B, the first fitting portion 501 of the flight 5 is fitted between the plurality of third protrusions 419 and the plurality of first protrusions 421. As a result, the first fitting portion 501 is restricted from moving in the axial direction of the shaft 4, and the flight 5 is restricted from moving in the axial direction of the shaft 4. The position, shape, size, etc. of the second movement restricting unit 412 are not limited. For example, the second movement restricting portion 412 may be a groove formed on the inner peripheral surface of the insertion hole 410. In this case, the flight 5 has, for example, a protrusion that can be movably fitted into the groove in the axial direction of the shaft 4.
　図３に示すようにフライト５の挿入部５００は、シャフト４によってシャフト４の軸周り方向の移動が規制される嵌合部５０２を有している。以下、嵌合部５０２を第２嵌合部５０２という。本実施形態の第２嵌合部５０２は、挿入部５００の後端部の外周面に形成された複数の突部５０４を有している。本実施形態の第２嵌合部５０２は、複数の突部５０４として、四つの突部５０４を有している。複数の突部５０４は、挿入部５００の周方向に間隔をあけて並んでいる。 As shown in FIG. 3, the insertion portion 500 of the flight 5 has a fitting portion 502 in which the movement of the shaft 4 in the axial direction is restricted by the shaft 4. Hereinafter, the fitting portion 502 is referred to as a second fitting portion 502. The second fitting portion 502 of the present embodiment has a plurality of protrusions 504 formed on the outer peripheral surface of the rear end portion of the insertion portion 500. The second fitting portion 502 of the present embodiment has four protrusions 504 as a plurality of protrusions 504. The plurality of protrusions 504 are arranged at intervals in the circumferential direction of the insertion portion 500.
　シャフト４のフライト取付部４１は、図３～図４Ｂに示す回転規制部４１３を更に有している。図５Ｂに示すようにダーツ１が第２状態にあるとき、回転規制部４１３は、挿入部５００がシャフト４の軸周り方向に回転することを規制する。図３に示すように回転規制部４１３は、フライト取付部４１の後端部に形成された複数の凹部４１４を有している。本実施形態の回転規制部４１３は、複数の凹部４１４として、第２嵌合部５０２が有する突部５０４と同数の凹部４１４を有している。複数の凹部４１４は、フライト取付部４１の周方向に間隔をあけて並んでいる。 The flight mounting portion 41 of the shaft 4 further has a rotation regulating portion 413 shown in FIGS. 3 to 4B. As shown in FIG. 5B, when the darts 1 are in the second state, the rotation restricting portion 413 restricts the insertion portion 500 from rotating in the axial direction of the shaft 4. As shown in FIG. 3, the rotation restricting portion 413 has a plurality of recesses 414 formed in the rear end portion of the flight mounting portion 41. The rotation restricting portion 413 of the present embodiment has the same number of recesses 414 as the protrusions 504 of the second fitting portion 502 as a plurality of recesses 414. The plurality of recesses 414 are arranged at intervals in the circumferential direction of the flight mounting portion 41.
　複数の凹部４１４は、複数の突部５０４とそれぞれ一対一で対応する。各凹部４１４は、フライト取付部４１の後端面から前方に向かって凹んでいる。各凹部４１４は、フライト取付部４１の周壁部を周壁部の厚み方向に貫通している。 The plurality of recesses 414 correspond one-to-one with the plurality of protrusions 504. Each recess 414 is recessed forward from the rear end surface of the flight mounting portion 41. Each recess 414 penetrates the peripheral wall portion of the flight mounting portion 41 in the thickness direction of the peripheral wall portion.
　図５Ａに示すように、ダーツ１が第１状態にあるとき、フライト５の複数の突部５０４は、シャフト４のフライト取付部４１よりも後方に位置する。この場合、各突部５０４は凹部４１４に嵌まらず、シャフト４の軸周り方向の回転が規制されない。このため、フライト５は、シャフト４の軸周り方向の回転が許容された状態でシャフト４に取り付けられる。図５Ｂに示すように、ダーツ１が第２状態にあるとき、フライト５の各突部５０４はシャフト４の対応する凹部４１４に嵌まり、シャフト４の軸周り方向の移動が規制される。このため、フライト５は、シャフト４の軸周り方向の回転が規制された状態でシャフト４に取り付けられる。 As shown in FIG. 5A, when the darts 1 are in the first state, the plurality of protrusions 504 of the flight 5 are located behind the flight mounting portion 41 of the shaft 4. In this case, each protrusion 504 does not fit into the recess 414, and the rotation of the shaft 4 in the axial direction is not restricted. Therefore, the flight 5 is attached to the shaft 4 in a state where the rotation of the shaft 4 in the axial direction is allowed. As shown in FIG. 5B, when the darts 1 are in the second state, each protrusion 504 of the flight 5 fits into the corresponding recess 414 of the shaft 4 to restrict the axial movement of the shaft 4. Therefore, the flight 5 is attached to the shaft 4 in a state where the rotation of the shaft 4 in the axial direction is restricted.
　なお、第２嵌合部５０２及び回転規制部４１３の各々の位置、形状及び大きさ等は限定されない。例えば、第２嵌合部５０２は、挿入部５００の外周面に形成される一つの突起であってもよい、この場合、回転規制部４１３は、例えば、突起が嵌まる一つの凹部を有する。また、第２嵌合部５０２は、挿入部５００の外周面に形成される一つ又は複数の凹部であってもよい。この場合、回転規制部４１３は、例えば、フライト取付部４１の内周面に形成される一つ又は複数の突部で構成される。 The positions, shapes, sizes, etc. of the second fitting portion 502 and the rotation restricting portion 413 are not limited. For example, the second fitting portion 502 may be one protrusion formed on the outer peripheral surface of the insertion portion 500, in which case the rotation restricting portion 413 has, for example, one recess into which the protrusion fits. Further, the second fitting portion 502 may be one or a plurality of recesses formed on the outer peripheral surface of the insertion portion 500. In this case, the rotation restricting portion 413 is composed of, for example, one or a plurality of protrusions formed on the inner peripheral surface of the flight mounting portion 41.
　利用者は、図５Ａに示すように、フライト５の挿入部５００をシャフト４の挿入穴４１０に第１挿入量だけ挿入することで、ダーツ１（シャフト４）を第１状態として、フライト５をシャフト４の軸周り方向の回転を許容した状態でシャフト４に取り付けることができる。利用者は、ダーツ１（シャフト４）が第１状態にあるとき、フライト５の挿入部５００の挿入穴４１０に対する挿入量が第２挿入量になるまで、フライト５をシャフト４に対して前方に移動することで、図５Ｂに示すようにダーツ１（シャフト４）を第２状態として、フライト５のシャフト４の軸周り方向の回転を規制することができる。この場合、フライト５の第１嵌合部５０１は、複数の第１突起４２１を乗り越え、複数の第１突起４２１と、複数の第３突起４１９との間に嵌まり込む。すなわち、各第１突起４２１の高さは、ダーツ１が第１状態にあるとき、フライト５に対して所定の大きさ以上の前向きの力がかかったときにのみ、第１嵌合部５０１が複数の第１突起４２１を乗り越えるように設定されている。 As shown in FIG. 5A, the user inserts the insertion portion 500 of the flight 5 into the insertion hole 410 of the shaft 4 by the first insertion amount, so that the darts 1 (shaft 4) is set as the first state and the flight 5 is set. It can be attached to the shaft 4 in a state where the rotation of the shaft 4 in the axial direction is allowed. When the darts 1 (shaft 4) is in the first state, the user moves the flight 5 forward with respect to the shaft 4 until the insertion amount of the insertion portion 500 of the flight 5 into the insertion hole 410 becomes the second insertion amount. By moving, as shown in FIG. 5B, the darts 1 (shaft 4) can be set as the second state, and the rotation of the shaft 4 of the flight 5 in the axial direction can be restricted. In this case, the first fitting portion 501 of the flight 5 gets over the plurality of first protrusions 421 and is fitted between the plurality of first protrusions 421 and the plurality of third protrusions 419. That is, the height of each first protrusion 421 is such that when the darts 1 are in the first state, the first fitting portion 501 is applied only when a forward force of a predetermined magnitude or more is applied to the flight 5. It is set to get over a plurality of first protrusions 421.
　ダーツ１は、図５Ａに示す第１状態にすることで、フライト５がシャフト４に対して回転可能となったスピンタイプのダーツとして利用できる。また、ダーツ１は、図５Ｂに示す第２状態にすることで、フライト５のシャフト４に対する回転が規制されたロックタイプのダーツとしても利用できる。 The darts 1 can be used as a spin type darts in which the flight 5 can rotate with respect to the shaft 4 by setting it in the first state shown in FIG. 5A. Further, the darts 1 can also be used as a lock type darts in which the rotation of the flight 5 with respect to the shaft 4 is restricted by setting the darts 1 in the second state shown in FIG. 5B.
　ダーツ１がスピンタイプのダーツとして利用される場合、的に刺さっている状態において、的に向かって投げられた別のダーツがフライト５に当たった場合に、フライト５が回転する。このため、フライト５に大きな力が加わり難く、フライト５の変形又は破損等が生じ難い。また、この場合、投げられたダーツ１が的に刺さったダーツに当たって、投げられたダーツ１の軌道が大きく変わったり、投げられたダーツ１が弾かれたりすることも抑制される。特に本実施形態では、前述したようにフライト５がシャフト４に対して回転しすぎることが抑制されるため、投げられたダーツ１が弾かれることが一層抑制される。 When the darts 1 is used as a spin type darts, the flight 5 rotates when another dart thrown toward the target hits the flight 5 while being stuck. Therefore, it is difficult for a large force to be applied to the flight 5, and the flight 5 is unlikely to be deformed or damaged. Further, in this case, it is also suppressed that the trajectory of the thrown darts 1 is significantly changed or the thrown darts 1 is repelled when the thrown darts 1 hits the target pierced darts. In particular, in the present embodiment, as described above, the flight 5 is prevented from rotating too much with respect to the shaft 4, so that the thrown darts 1 are further suppressed from being flipped.
　ダーツ１がロックタイプのダーツとして利用される場合、フライト５がシャフト４に対して回転することによるダーツ１の傷みが生じ難い。また、ロックタイプのダーツは、的に刺さった状態でフライト５の回転が規制されるため、的に刺さったダーツ１の上に乗せるように他のダーツを投げるスタッキングと呼ばれる技術を行いやすいといった利点もある。 When the darts 1 are used as lock type darts, the darts 1 are less likely to be damaged due to the rotation of the flight 5 with respect to the shaft 4. In addition, since the rotation of flight 5 is restricted in the state of being stabbed in the lock type darts, there is an advantage that it is easy to perform a technique called stacking in which other darts are thrown so as to be placed on the darts 1 stabbed in the target. There is also.
　また、ダーツ１は、フライト５のシャフト４への取付位置を変更することで、フライト５の回転を許容する状態と規制する状態とに簡単に変更できる。このため、利用者は、試合中にダーツ１を複数回連続して投げる過程において、ダーツ１の的から視線を外すことなく、集中力及び姿勢等を維持した状態のまま、フライト５の回転を許容する状態と規制する状態とに変更できる。 Further, the darts 1 can be easily changed between a state in which the rotation of the flight 5 is allowed and a state in which the rotation of the flight 5 is restricted by changing the mounting position of the flight 5 on the shaft 4. Therefore, in the process of throwing the darts 1 a plurality of times in succession during the game, the user keeps his / her line of sight from the target of the darts 1 and rotates the flight 5 while maintaining his / her concentration and posture. It can be changed between an acceptable state and a regulated state.
　また、本実施形態のダーツ１は、スピンタイプ及びロックタイプのいずれで利用する場合でも、共通するシャフト４及びフライト５を用いることができる。したがって、利用者は、繊細な競技であるダーツゲームにおいて、ダーツ１を、スピンタイプ及びロックタイプのいずれで利用する場合にも、同じ感覚で投げることができる。 Further, the darts 1 of the present embodiment can use the common shaft 4 and flight 5 regardless of whether the darts 1 are of the spin type or the lock type. Therefore, in the darts game, which is a delicate competition, the user can throw the darts 1 with the same feeling regardless of whether the darts 1 is used as a spin type or a rock type.
　（２）変形例
　次に上記実施形態の変形例について説明する。 (2) Modification Example Next, a modification of the above embodiment will be described.
　（２－１）変形例１
　まず、変形例１について説明する。なお、本変形例の説明では、実施形態の要素と共通する要素については同一の符号を付して、重複する説明を省略する。また、実施形態の要素に対応する要素についても、実施形態の対応する要素に付された符号の末尾に「Ａ」を付して記載し、重複する説明を省略する。 (2-1) Modification 1
First, the first modification will be described. In the description of this modification, the same reference numerals are given to the elements common to the elements of the embodiment, and duplicate description will be omitted. Further, the elements corresponding to the elements of the embodiment are also described by adding "A" to the end of the reference numerals attached to the corresponding elements of the embodiment, and duplicate description will be omitted.
　図６に本変形例のダーツ１Ａを示す。ダーツ１Ａは、実施形態のシャフト４とは別に、複数種類のシャフト４３，４４を更に備えている。複数種類のシャフトには、図７Ａに示す第１シャフト４３と、図８Ａに示す第２シャフト４４とが含まれている。すなわち、本実施形態のシャフトは、実施形態のシャフト４に加えて、第１シャフト４３と第２シャフト４４とを更に有している。ダーツ１Ａは、実施形態のフライト５とは別に、図９Ａに示すフライト５Ａを更に備えている。すなわち、本実施形態のフライトは、実施形態のフライト５に加えて、フライト５Ａを更に有している。 FIG. 6 shows the darts 1A of this modified example. The darts 1A further includes a plurality of types of shafts 43 and 44 in addition to the shaft 4 of the embodiment. The plurality of types of shafts include a first shaft 43 shown in FIG. 7A and a second shaft 44 shown in FIG. 8A. That is, the shaft of the present embodiment further includes a first shaft 43 and a second shaft 44 in addition to the shaft 4 of the embodiment. The darts 1A further includes the flight 5A shown in FIG. 9A, in addition to the flight 5 of the embodiment. That is, the flight of the present embodiment further has flight 5A in addition to flight 5 of the embodiment.
　図７Ａに示す第１シャフト４３は、フライト５Ａを第１シャフト４３に対する回転を許容した状態で取付可能である。図８Ａに示す第２シャフト４４は、フライト５Ａを第２シャフト４４に対する回転を規制した状態で取付可能である。すなわち、本変形例のダーツ１Ａは、バレル３に取り付けられるシャフト４３，４４を交換することで、フライト５Ａがシャフト４３に回転が許容された状態で取り付けられる第１状態と、フライト５Ａがシャフト４４に回転が許容された状態で取り付けられる第２状態とに変更可能である。 The first shaft 43 shown in FIG. 7A can be mounted with the flight 5A allowed to rotate with respect to the first shaft 43. The second shaft 44 shown in FIG. 8A can be attached with the flight 5A in a state where the rotation with respect to the second shaft 44 is restricted. That is, in the darts 1A of this modification, the first state in which the flight 5A is attached to the shaft 43 in a state where rotation is allowed by exchanging the shafts 43 and 44 attached to the barrel 3, and the flight 5A is the shaft 44. It can be changed to the second state where it is attached in a state where rotation is allowed.
　バレル３（図６参照）には、実施形態のシャフト４及び複数種類のシャフト４３，４４の中から選択された一つのシャフトを取り付け得る。なお、バレル３は、実施形態のシャフト４を取り付けることができないバレルであってもよい。 A shaft selected from the shaft 4 of the embodiment and the plurality of types of shafts 43 and 44 can be attached to the barrel 3 (see FIG. 6). The barrel 3 may be a barrel to which the shaft 4 of the embodiment cannot be attached.
　第１シャフト４３及び第２シャフト４４の各々は、バレル取付部２０と、フライト取付部４１Ａとを有している。第１シャフト４３及び第２シャフト４４の各々のバレル取付部２０は、実施形態１のシャフト４のバレル取付部２０が取り付けられる、バレル３のシャフト取付部３２に、取付可能である。 Each of the first shaft 43 and the second shaft 44 has a barrel mounting portion 20 and a flight mounting portion 41A. Each of the barrel mounting portions 20 of the first shaft 43 and the second shaft 44 can be mounted on the shaft mounting portion 32 of the barrel 3 to which the barrel mounting portion 20 of the shaft 4 of the first embodiment is mounted.
　各シャフト４３，４４のフライト取付部４１Ａは、実施形態の第１移動規制部４２及び第２移動規制部４１２（図５Ａ及び図５Ｂ参照）に代えて、フライト５がシャフト４の軸方向に移動することを規制する移動規制部４５を有している。各シャフト４３，４４のフライト取付部４１Ａは、実施形態の回転規制部４１３（図３参照）を有していない。第１シャフト４３のフライト取付部４１Ａは、フライト５Ａが第１シャフト４３の軸周り方向に回転することを許容しつつフライト５Ａを支持する支持部４１５を有している。第２シャフト４４のフライト取付部４１Ａは、フライト５Ａが第２シャフト４４の軸周り方向に回転することを規制する回転規制部４１６を有している。 In the flight mounting portion 41A of each of the shafts 43 and 44, the flight 5 moves in the axial direction of the shaft 4 in place of the first movement restricting portion 42 and the second movement restricting portion 412 (see FIGS. 5A and 5B) of the embodiment. It has a movement control unit 45 that regulates what to do. The flight mounting portion 41A of each of the shafts 43 and 44 does not have the rotation restricting portion 413 (see FIG. 3) of the embodiment. The flight mounting portion 41A of the first shaft 43 has a support portion 415 that supports the flight 5A while allowing the flight 5A to rotate in the axial direction of the first shaft 43. The flight mounting portion 41A of the second shaft 44 has a rotation regulating portion 416 that regulates the flight 5A to rotate in the axial direction of the second shaft 44.
　各シャフト４３，４４の移動規制部４５は、挿入穴４１０Ａの後端部の内周面に形成された溝である。移動規制部４５は、挿入穴４１０Ａの周方向に延びており、挿入穴４１０Ａの周方向の全長にわたっている。 The movement restricting portion 45 of each of the shafts 43 and 44 is a groove formed on the inner peripheral surface of the rear end portion of the insertion hole 410A. The movement restricting portion 45 extends in the circumferential direction of the insertion hole 410A and extends over the entire length of the insertion hole 410A in the circumferential direction.
　第１シャフト４３の支持部４１５は、挿入穴４１０Ａの前端部の内面から後方に向かって突出したピン状の突起である。第２シャフト４４の回転規制部４１６は、挿入穴４１０Ａの前端部の内面から後方に向かって突出している。回転規制部４１６は、挿入穴４１０Ａの前端部の内面から後方に向かって突出した第１突部４１７と、第２シャフト４４の軸方向に見て第１突部４１７の中心に位置する箇所から後方に向かって更に突出したピン状の第２突部４１８とを有している。図８Ｂに示すように、第１突部４１７は、第２シャフト４４の軸方向に見てＸ字状に形成されている。 The support portion 415 of the first shaft 43 is a pin-shaped protrusion protruding rearward from the inner surface of the front end portion of the insertion hole 410A. The rotation restricting portion 416 of the second shaft 44 projects rearward from the inner surface of the front end portion of the insertion hole 410A. The rotation restricting portion 416 is located at the center of the first protrusion 417 protruding rearward from the inner surface of the front end of the insertion hole 410A and the first protrusion 417 when viewed in the axial direction of the second shaft 44. It has a pin-shaped second protrusion 418 that further protrudes toward the rear. As shown in FIG. 8B, the first protrusion 417 is formed in an X shape when viewed in the axial direction of the second shaft 44.
　図９Ａ及び図９Ｂに示すように、フライト５Ａの軸部５０Ａが有する挿入部５００Ａは、実施形態の第１嵌合部５０１及び第２嵌合部５０２（図３参照）に代えて、嵌合部５０５及び嵌込凹部５０６を有している。嵌合部５０５は、挿入部５００Ａの後端部の外周面に形成された突起である。嵌合部５０５は、挿入部５００Ａの周方向に延びており、挿入部５００Ａの周方向の全長にわたっている。 As shown in FIGS. 9A and 9B, the insertion portion 500A included in the shaft portion 50A of the flight 5A is fitted in place of the first fitting portion 501 and the second fitting portion 502 (see FIG. 3) of the embodiment. It has a portion 505 and a fitting recess 506. The fitting portion 505 is a protrusion formed on the outer peripheral surface of the rear end portion of the insertion portion 500A. The fitting portion 505 extends in the circumferential direction of the insertion portion 500A and extends over the entire length of the insertion portion 500A in the circumferential direction.
　フライト５Ａが各シャフト４３，４４に取り付けられるとき、図１０Ａ及び図１０Ｂに示すように、挿入穴４１０Ａに挿入された挿入部５００Ａの嵌合部５０５が、移動規制部４５に対してシャフト４３，４４の軸周り方向の移動が許容された状態で嵌め込まれる。これにより、フライト５Ａは、シャフト４３，４４の軸方向の移動が規制された状態で、各シャフト４３，４４に取り付けられる。 When the flight 5A is attached to each of the shafts 43 and 44, as shown in FIGS. 10A and 10B, the fitting portion 505 of the insertion portion 500A inserted into the insertion hole 410A receives the shaft 43, with respect to the movement restricting portion 45. It is fitted in a state where movement in the axial direction of 44 is allowed. As a result, the flight 5A is attached to each of the shafts 43 and 44 in a state where the axial movement of the shafts 43 and 44 is restricted.
　フライト５Ａが第１シャフト４３に取り付けられた状態では、溝である移動規制部４５の底面と嵌合部５０５との間には隙間が形成され、前記底面と嵌合部５０５とは接触しない。このため、フライト５Ａは第１シャフト４３に対してシャフト４の軸周り方向に回転しやすい。なお、移動規制部４５及び嵌合部５０５の各々の位置、形状及び大きさ等は限定されない。例えば、移動規制部４５が突部であり、嵌合部５０５が突部を嵌込可能な凹部であってもよい。 When the flight 5A is attached to the first shaft 43, a gap is formed between the bottom surface of the movement restricting portion 45, which is a groove, and the fitting portion 505, and the bottom surface and the fitting portion 505 do not come into contact with each other. Therefore, the flight 5A tends to rotate in the axial direction of the shaft 4 with respect to the first shaft 43. The positions, shapes, sizes, etc. of the movement restricting portion 45 and the fitting portion 505 are not limited. For example, the movement restricting portion 45 may be a protrusion, and the fitting portion 505 may be a recess into which the protrusion can be fitted.
　図９Ａ及び図９Ｂに示すように、嵌込凹部５０６は、挿入部５００Ａの前端面に形成されている。嵌込凹部５０６は、第１凹部５０７と、第１凹部５０７に連続した第２凹部５０８とを有している。第１凹部５０７は、挿入部５００Ａの前端面から後方に向かって延びた溝である。第１凹部５０７は、挿入部５００Ａの軸方向に見て、第２シャフト４４の第１突部４１７に合致するＸ字状に形成された溝である。第２凹部５０８は、挿入部５００Ａの軸方向に見て、第１凹部５０７の中心に位置する箇所から後方に向かって延びた直線状の穴である。 As shown in FIGS. 9A and 9B, the fitting recess 506 is formed on the front end surface of the insertion portion 500A. The fitting recess 506 has a first recess 507 and a second recess 508 continuous with the first recess 507. The first recess 507 is a groove extending rearward from the front end surface of the insertion portion 500A. The first recess 507 is an X-shaped groove that matches the first protrusion 417 of the second shaft 44 when viewed in the axial direction of the insertion portion 500A. The second recess 508 is a linear hole extending rearward from a position located at the center of the first recess 507 when viewed in the axial direction of the insertion portion 500A.
　図１０Ａに示すように、フライト５Ａが第１シャフト４３に取り付けられるとき、第１シャフト４３の支持部４１５は、フライト５Ａの第１凹部５０７及び第２凹部５０８に対して、第１シャフト４３の軸周り方向に回転可能に挿入される。この場合、支持部４１５は、挿入部５００Ａの前端部を第１シャフト４３の軸周り方向に回転可能に支持する。このため、フライト５Ａは、第１シャフト４３に第１シャフト４３の軸周り方向の回転が許容された状態で取り付けられる。 As shown in FIG. 10A, when the flight 5A is attached to the first shaft 43, the support portion 415 of the first shaft 43 is of the first shaft 43 with respect to the first recess 507 and the second recess 508 of the flight 5A. It is rotatably inserted in the direction around the axis. In this case, the support portion 415 rotatably supports the front end portion of the insertion portion 500A in the axial direction of the first shaft 43. Therefore, the flight 5A is attached to the first shaft 43 in a state where the rotation of the first shaft 43 in the axial direction is allowed.
　フライト５Ａが図８Ａに示す第２シャフト４４に取り付けられるとき、第２シャフト４４の第２突部４１８は、フライト５Ａの図９Ｂに示す第１凹部５０７及び第２凹部５０８に対して、第２シャフト４４の軸周り方向に回転可能に挿入される。ただし、第２シャフト４４の第１突部４１７は、フライト５Ａの第１凹部５０７に対して、第２シャフト４４の軸周り方向の回転が規制された状態で嵌め込まれる。このため、フライト５Ａは、第２シャフト４４に対して回転が規制された状態で取り付けられる。 When the flight 5A is attached to the second shaft 44 shown in FIG. 8A, the second protrusion 418 of the second shaft 44 is second with respect to the first recess 507 and the second recess 508 shown in FIG. 9B of the flight 5A. It is rotatably inserted in the axial direction of the shaft 44. However, the first protrusion 417 of the second shaft 44 is fitted into the first recess 507 of the flight 5A in a state where the rotation of the second shaft 44 in the axial direction is restricted. Therefore, the flight 5A is attached to the second shaft 44 in a state where the rotation is restricted.
　利用者は、バレル３に取り付けるシャフト４３，４４を選択することで、ダーツ１Ａを、フライト５Ａの回転を規制した第１状態とフライト５Ａの回転を許容した第２状態とのいずれの状態にも変更できる。すなわち、ダーツ１Ａが第１状態にある場合、バレル３に第１シャフト４３が取り付けられ、第１シャフト４３にフライト５Ａが回転可能に取り付けられる。また、ダーツ１Ａが第２状態にある場合、バレル３に第２シャフト４４が取り付けられ、第２シャフト４４にフライト５Ａが回転不能に取り付けられる。 By selecting the shafts 43 and 44 to be attached to the barrel 3, the user can put the darts 1A in either the first state in which the rotation of the flight 5A is restricted or the second state in which the rotation of the flight 5A is allowed. Can be changed. That is, when the darts 1A is in the first state, the first shaft 43 is attached to the barrel 3 and the flight 5A is rotatably attached to the first shaft 43. Further, when the darts 1A is in the second state, the second shaft 44 is attached to the barrel 3 and the flight 5A is non-rotatably attached to the second shaft 44.
　なお、第１突部４１７及び第１凹部５０７の各々の形状は、第１突部４１７が第２シャフト４４の軸周り方向の回転が規制された状態で第１凹部５０７に嵌め込まれるのであれば、限定されない。また、第１突部４１７がフライト５Ａに形成され、第１凹部５０７が第２シャフト４４に形成されてもよい。 If the shapes of the first protrusion 417 and the first recess 507 are fitted into the first recess 507 in a state where the rotation of the first protrusion 417 in the axial direction of the second shaft 44 is restricted. , Not limited. Further, the first protrusion 417 may be formed on the flight 5A, and the first recess 507 may be formed on the second shaft 44.
　ダーツ１Ａは、複数種類のアタッチメント６１，６２を更に備えている。ダーツ１Ａは、複数種類のアタッチメントとして、図１１Ａに示す第１アタッチメント６１と、図１２に示す第２アタッチメント６２とを備えている。 The darts 1A further includes a plurality of types of attachments 61 and 62. The darts 1A includes a first attachment 61 shown in FIG. 11A and a second attachment 62 shown in FIG. 12 as a plurality of types of attachments.
　図８Ａに示す第２シャフト４４には、複数種類のアタッチメント６１，６２の中から選択されたアタッチメントを取り付けることができる。第２シャフト４４と、第２シャフト４４に取り付けられた第１アタッチメント６１（図１１Ａ参照）とで、第３シャフトが構成される。この場合、第２シャフト４４は、第３シャフトのシャフト本体を構成する。第２シャフト４４と、第２シャフト４４に取り付けられた第２アタッチメント６２（図１２）とで、第４シャフトが構成される。この場合、第２シャフト４４は、第４シャフトのシャフト本体を構成する。 An attachment selected from a plurality of types of attachments 61 and 62 can be attached to the second shaft 44 shown in FIG. 8A. The second shaft 44 and the first attachment 61 (see FIG. 11A) attached to the second shaft 44 form a third shaft. In this case, the second shaft 44 constitutes the shaft body of the third shaft. The second shaft 44 and the second attachment 62 (FIG. 12) attached to the second shaft 44 form a fourth shaft. In this case, the second shaft 44 constitutes the shaft body of the fourth shaft.
　ダーツ１Ａは、フライト５Ａとは別に、複数種類のフライト５２，５３を更に備えている。ダーツ１Ａは、複数種類のフライトとして、図１１Ａに示すフライト５２と、図１２に示すフライト５３とを備えている。以下、フライト５２を第２フライト５２といい、フライト５３を第３フライト５３という。第２フライト５２は、第３シャフトの一部を構成する第１アタッチメント６１に取付可能である。第３フライト５３は、第４シャフトの一部を構成する第２アタッチメント６２に取付可能である。 The darts 1A is further equipped with a plurality of types of flights 52 and 53 in addition to the flight 5A. The darts 1A includes a flight 52 shown in FIG. 11A and a flight 53 shown in FIG. 12 as a plurality of types of flights. Hereinafter, the flight 52 is referred to as a second flight 52, and the flight 53 is referred to as a third flight 53. The second flight 52 can be attached to the first attachment 61 which constitutes a part of the third shaft. The third flight 53 can be attached to the second attachment 62 which constitutes a part of the fourth shaft.
　第１アタッチメント６１及び第２アタッチメント６２の各々は、第２シャフト４４の軸方向に延びた棒状に形成されている。各アタッチメント６１，６２は、例えば、ポリプロピレン、ポリアミド、ポリスチレン、ポリカーボネート又はポリアセタール等の合成樹脂、炭素繊維混合樹脂又は金属から形成される。なお、第１アタッチメント６１、第２アタッチメント６２、第２フライト５２、第３フライト５３の各々の材料は限定されないが、チップ２、シャフト４、第１シャフト４３、第２シャフト４４及びフライト５Ａと同様に、合成樹脂と、自然界に存在する物質とを含む材料から形成されてもよい。 Each of the first attachment 61 and the second attachment 62 is formed in a rod shape extending in the axial direction of the second shaft 44. Each attachment 61, 62 is formed of, for example, a synthetic resin such as polypropylene, polyamide, polystyrene, polycarbonate or polyacetal, a carbon fiber mixed resin or a metal. The materials of the first attachment 61, the second attachment 62, the second flight 52, and the third flight 53 are not limited, but are the same as those of the tip 2, the shaft 4, the first shaft 43, the second shaft 44, and the flight 5A. In addition, it may be formed from a material containing a synthetic resin and a substance existing in nature.
　各アタッチメント６１，６２は、第２シャフト４４の挿入穴４１０Ａに挿入可能な挿入部６３を有している。挿入部６３は、アタッチメント６１，６２の前端部を構成する。挿入部６３は、フライト５Ａの挿入部５００Ａ（図９Ａ参照）と形状及び大きさが同じである。すなわち、挿入部６３は、嵌合部５０５と同様の嵌合部６３０と、嵌込凹部５０６と同様の嵌込凹部６３１とを有している。 Each attachment 61, 62 has an insertion portion 63 that can be inserted into the insertion hole 410A of the second shaft 44. The insertion portion 63 constitutes the front end portions of the attachments 61 and 62. The insertion portion 63 has the same shape and size as the insertion portion 500A (see FIG. 9A) of the flight 5A. That is, the insertion portion 63 has a fitting portion 630 similar to the fitting portion 505 and a fitting recess 631 similar to the fitting recess 506.
　各アタッチメント６１，６２は、嵌合部６３０が図８Ａに示す第２シャフト４４の移動規制部４５に嵌まり、かつ、嵌込凹部６３１に第２シャフト４４の回転規制部４１６が第２シャフト４４の軸周り方向の回転が規制された状態で嵌まることで、第２シャフト４４に対して第２シャフト４４の軸周り方向の回転が規制された状態で取り付けられる。 In each of the attachments 61 and 62, the fitting portion 630 is fitted into the movement restricting portion 45 of the second shaft 44 shown in FIG. 8A, and the rotation regulating portion 416 of the second shaft 44 is fitted in the fitting recess 631 to be the second shaft 44. By fitting in a state where the rotation of the second shaft 44 in the axial direction is restricted, the second shaft 44 is attached in a state where the rotation in the axial direction is restricted with respect to the second shaft 44.
　図１１Ａ～図１１Ｄに示す第１アタッチメント６１は、第２フライト５２を取り外し可能に取り付けることができるフライト取付部６１０を更に有している。フライト取付部６１０は、第１アタッチメント６１の後端部を構成する。フライト取付部６１０は、第２シャフト４４の軸方向に延びた棒状に形成されている。フライト取付部６１０は、嵌合溝６１１を有している。嵌合溝６１１は、フライト取付部６１０の後端面から前方に向かって凹み、第２シャフト４４の軸方向に見て、Ｘ字状に形成されている。 The first attachment 61 shown in FIGS. 11A to 11D further has a flight attachment portion 610 to which the second flight 52 can be detachably attached. The flight mounting portion 610 constitutes the rear end portion of the first attachment 61. The flight mounting portion 610 is formed in a rod shape extending in the axial direction of the second shaft 44. The flight mounting portion 610 has a fitting groove 611. The fitting groove 611 is recessed forward from the rear end surface of the flight mounting portion 610, and is formed in an X shape when viewed in the axial direction of the second shaft 44.
　第１アタッチメント６１に取付可能な第２フライト５２は、複数の羽根部５２０を有している。本実施形態の第２フライト５２は、複数の羽根部５２０として、４枚の羽根部５２０を有している。複数の羽根部５２０は、第２シャフト４４の軸方向に見てＸ字状になるように、第２シャフト４４の軸周り方向に間隔をあけて並んでいる。複数の羽根部５２０は、各羽根部５２０の外周側とは反対側の端部同士が接続されている。 The second flight 52 that can be attached to the first attachment 61 has a plurality of blade portions 520. The second flight 52 of the present embodiment has four blade portions 520 as a plurality of blade portions 520. The plurality of blade portions 520 are arranged at intervals in the axial direction of the second shaft 44 so as to form an X shape when viewed in the axial direction of the second shaft 44. The plurality of blade portions 520 are connected to each other at the ends opposite to the outer peripheral side of each blade portion 520.
　第２フライト５２は、第１アタッチメント６１に取付可能なアタッチメント取付部５２１を有している。アタッチメント取付部５２１は、複数の羽根部５２０の前端部であり、第２シャフト４４の軸方向に見て、第１アタッチメント６１の嵌合溝６１１に合致するＸ字状に形成されている。アタッチメント取付部５２１が第１アタッチメント６１の嵌合溝６１１に嵌め込まれることで、第２フライト５２は、第２シャフト４４の軸周り方向の回転が規制された状態で、第１アタッチメント６１に取り外し可能に取り付けられる。なお、第１アタッチメント６１のフライト取付部６１０の形状は、第２フライト５２の形状に応じて適宜変更可能である。 The second flight 52 has an attachment attachment portion 521 that can be attached to the first attachment 61. The attachment attachment portion 521 is a front end portion of the plurality of blade portions 520, and is formed in an X shape that matches the fitting groove 611 of the first attachment 61 when viewed in the axial direction of the second shaft 44. By fitting the attachment attachment portion 521 into the fitting groove 611 of the first attachment 61, the second flight 52 can be removed from the first attachment 61 in a state where the rotation of the second shaft 44 in the axial direction is restricted. Attached to. The shape of the flight attachment portion 610 of the first attachment 61 can be appropriately changed according to the shape of the second flight 52.
　図１２に示す第２アタッチメント６２は、第３フライト５３を取り外し可能に取り付け得るフライト取付部６２０を更に有している。フライト取付部６２０は、第２アタッチメント６２の後端部を構成する。フライト取付部６２０は、第２シャフト４４の軸方向に延びた棒状に形成されている。 The second attachment 62 shown in FIG. 12 further has a flight attachment portion 620 to which the third flight 53 can be detachably attached. The flight attachment portion 620 constitutes the rear end portion of the second attachment 62. The flight mounting portion 620 is formed in a rod shape extending in the axial direction of the second shaft 44.
　第２アタッチメント６２に取付可能な第３フライト５３は、筒部５３０と複数の羽根部５３１とを有している。筒部５３０は、第２シャフト４４の軸方向に延びた筒状に形成されている。第２アタッチメント６２のフライト取付部６２０が、筒部５３０の内側に第２シャフト４４の軸周り方向に回転可能に嵌め込まれることで、第３フライト５３は、第２アタッチメント６２に回転可能に取り付けられる。すなわち、筒部５３０は、第２アタッチメント６２に回転可能に取り付け得るアタッチメント取付部である。なお、第２アタッチメント６２のフライト取付部６２０の形状は、第３フライト５３の形状に合わせて適宜変更可能である。 The third flight 53 that can be attached to the second attachment 62 has a tubular portion 530 and a plurality of blade portions 531. The tubular portion 530 is formed in a tubular shape extending in the axial direction of the second shaft 44. The flight attachment portion 620 of the second attachment 62 is rotatably fitted inside the tubular portion 530 in the axial direction of the second shaft 44, so that the third flight 53 is rotatably attached to the second attachment 62. .. That is, the tubular portion 530 is an attachment attachment portion that can be rotatably attached to the second attachment 62. The shape of the flight attachment portion 620 of the second attachment 62 can be appropriately changed according to the shape of the third flight 53.
　利用者は、図８Ａに示す第２シャフト４４に図１１Ａに示す第１アタッチメント６１を取り付け、第１アタッチメント６１に第２フライト５２を回転を規制した状態で取り付け得る。また、利用者は、図８Ａに示す第２シャフト４４に図１２に示す第２アタッチメント６２を取り付け、第２アタッチメント６２に第３フライト５３を回転を許容した状態で取り付け得る。すなわち、利用者は、第２シャフト４４に取り付けられるアタッチメント６１，６２を選択することで、第２シャフト４４を利用して、第２フライト５２及び第３フライト５３を利用できる。 The user can attach the first attachment 61 shown in FIG. 11A to the second shaft 44 shown in FIG. 8A, and attach the second flight 52 to the first attachment 61 in a state where rotation is restricted. Further, the user can attach the second attachment 62 shown in FIG. 12 to the second shaft 44 shown in FIG. 8A, and attach the third flight 53 to the second attachment 62 in a state where rotation is allowed. That is, the user can use the second flight 52 and the third flight 53 by using the second shaft 44 by selecting the attachments 61 and 62 attached to the second shaft 44.
　（２－２）変形例２
　次に変形例２について説明する。なお、本変形例の説明では、実施形態の要素と共通する要素については同一の符号を付して、重複する説明を省略する。また、実施形態の要素に対応する要素についても、実施形態の対応する要素に付された符号の末尾に「Ｂ」を付して記載し、重複する説明を省略する。 (2-2) Modification 2
Next, a modification 2 will be described. In the description of this modification, the same reference numerals are given to the elements common to the elements of the embodiment, and duplicate description will be omitted. Further, the elements corresponding to the elements of the embodiment are also described by adding "B" to the end of the reference numerals attached to the corresponding elements of the embodiment, and duplicate description will be omitted.
　本変形例のダーツ１Ｂも、フライト５Ｂを挿入部５００Ｂの挿入穴４１０Ｂに対する挿入量を変更してシャフト４Ｂに取り付けることで、フライト５Ｂのシャフト４Ｂに対する回転が許容された図１３に示す第１状態と、フライト５Ｂのシャフト４Ｂに対する回転が規制された図１４に示す第２状態とに変更することができる。 The darts 1B of this modification also has the first state shown in FIG. 13, in which the flight 5B is allowed to rotate with respect to the shaft 4B by attaching the flight 5B to the shaft 4B by changing the insertion amount of the insertion portion 500B into the insertion hole 410B. And the second state shown in FIG. 14 in which the rotation of the flight 5B with respect to the shaft 4B is restricted can be changed.
　フライト５Ｂの第１嵌合部５０１Ｂは、挿入部５００Ｂの外周面に形成された二つの嵌合部分５０１１，５０１２を有している。二つの嵌合部分５０１１，５０１２の各々は、挿入部５００Ｂの外周面に形成された溝である。 The first fitting portion 501B of the flight 5B has two fitting portions 5011 and 5012 formed on the outer peripheral surface of the insertion portion 500B. Each of the two fitting portions 5011 and 5012 is a groove formed on the outer peripheral surface of the insertion portion 500B.
　二つの嵌合部分５０１１，５０１２は、シャフト４Ｂの軸方向において間隔をあけて、挿入部５００Ｂの後端部に形成されている。各嵌合部分５０１１，５０１２を構成する溝は、挿入部５００Ｂの周方向に延びており、挿入部５００Ｂの周方向の全長にわたっている。以下、二つの嵌合部分５０１１，５０１２のうち、前側に位置する嵌合部分５０１１を第１嵌合部分５０１１といい、後側に位置する嵌合部分５０１２を第２嵌合部分５０１２という。 The two fitting portions 5011 and 5012 are formed at the rear end portion of the insertion portion 500B at intervals in the axial direction of the shaft 4B. The grooves constituting the fitting portions 5011 and 5012 extend in the circumferential direction of the insertion portion 500B and extend over the entire length of the insertion portion 500B in the circumferential direction. Hereinafter, of the two fitting portions 5011 and 5012, the fitting portion 5011 located on the front side is referred to as a first fitting portion 5011, and the fitting portion 5012 located on the rear side is referred to as a second fitting portion 5012.
　シャフト４Ｂは、第１移動規制部４２及び第２移動規制部４１２（図４Ａ参照）に代えて、移動規制部４６を有している。図１５に示すように、移動規制部４６は、挿入穴４１０Ｂの内周面に形成された複数の突起４６０を有している。本変形例の移動規制部４６は、四つの突起４６０を有している。複数の突起４６０は、挿入穴４１０Ｂの内周面にシャフト４Ｂの周方向に間隔をあけて形成されている。 The shaft 4B has a movement control unit 46 in place of the first movement control unit 42 and the second movement control unit 412 (see FIG. 4A). As shown in FIG. 15, the movement restricting portion 46 has a plurality of protrusions 460 formed on the inner peripheral surface of the insertion hole 410B. The movement restricting portion 46 of this modification has four protrusions 460. The plurality of protrusions 460 are formed on the inner peripheral surface of the insertion hole 410B at intervals in the circumferential direction of the shaft 4B.
　ダーツ１Ｂが図１３に示す第１状態にあるとき、シャフト４Ｂの移動規制部４６（すなわち、複数の突起４６０）は、フライト５Ｂの第１嵌合部分５０１１に対して、シャフト４Ｂの軸周り方向に移動可能に嵌まる。これにより、フライト５Ｂがシャフト４Ｂの軸方向に移動することが規制される。 When the darts 1B is in the first state shown in FIG. 13, the movement restricting portion 46 (that is, a plurality of protrusions 460) of the shaft 4B is in the axial direction of the shaft 4B with respect to the first fitting portion 5011 of the flight 5B. Fits movable in. This restricts the flight 5B from moving in the axial direction of the shaft 4B.
　ダーツ１Ｂが図１３に示す第１状態にあるとき、複数の突起４６０と溝である第１嵌合部分５０１１の内周面との間には、僅かな隙間が形成され、複数の突起４６０は、その一部だけがシャフト４Ｂに接し、他の部分はシャフト４Ｂに密接しない。これにより、フライト５Ｂが、風等の弱い力によって回転することが抑制され、強い力が加わった場合にのみシャフト４Ｂに対して回転するように、フライト５Ｂのシャフト４Ｂに対する摩擦力が設定されている。なお、フライト５Ｂは、ダーツ１Ｂが第１状態にあるときに、シャフト４Ｂに対して回転可能に嵌め込まれていればよく、前記隙間は形成されなくてもよい。 When the darts 1B is in the first state shown in FIG. 13, a slight gap is formed between the plurality of protrusions 460 and the inner peripheral surface of the first fitting portion 5011 which is a groove, and the plurality of protrusions 460 are formed. , Only a part of it is in contact with the shaft 4B, and the other part is not in close contact with the shaft 4B. As a result, the frictional force of the flight 5B with respect to the shaft 4B is set so that the flight 5B is suppressed from rotating due to a weak force such as wind and rotates with respect to the shaft 4B only when a strong force is applied. There is. The flight 5B may be rotatably fitted to the shaft 4B when the darts 1B is in the first state, and the gap may not be formed.
　ダーツ１Ｂが図１４に示す第２状態にあるとき、シャフト４Ｂの複数の突起４６０は、フライト５Ｂの溝である第２嵌合部分５０１２に嵌まる。これにより、フライト５Ｂがシャフト４Ｂの軸方向に移動することが規制される。 When the darts 1B is in the second state shown in FIG. 14, the plurality of protrusions 460 of the shaft 4B fit into the second fitting portion 5012 which is the groove of the flight 5B. This restricts the flight 5B from moving in the axial direction of the shaft 4B.
　図１５に示すように、フライト５Ｂの第２嵌合部５０２Ｂは、挿入部５００Ｂの後端部の外周面に形成された一つの突起である。シャフト４Ｂの回転規制部４１３Ｂは、フライト取付部４１Ｂの後端部に形成された一つの凹部である。回転規制部４１３Ｂは、フライト取付部４１Ｂの後端面から前方に向かって凹んでいる。回転規制部４１３Ｂは、フライト取付部４１Ｂの周壁部を周壁部の厚み方向に貫通している。 As shown in FIG. 15, the second fitting portion 502B of the flight 5B is one protrusion formed on the outer peripheral surface of the rear end portion of the insertion portion 500B. The rotation restricting portion 413B of the shaft 4B is one recess formed at the rear end portion of the flight mounting portion 41B. The rotation restricting portion 413B is recessed forward from the rear end surface of the flight mounting portion 41B. The rotation restricting portion 413B penetrates the peripheral wall portion of the flight mounting portion 41B in the thickness direction of the peripheral wall portion.
　ダーツ１Ｂが図１３に示す第１状態にあるとき、フライト５Ｂの図１５に示す第２嵌合部５０２Ｂは、シャフト４Ｂのフライト取付部４１Ｂよりも後方に位置する。この場合、第２嵌合部５０２Ｂは回転規制部４１３Ｂに嵌まらず、シャフト４Ｂの軸周り方向の回転が規制されない。このため、フライト５Ｂは、シャフト４Ｂの軸周り方向の回転が許容された状態でシャフト４Ｂに取り付けられる。ダーツ１Ｂが図１４に示す第２状態にあるとき、フライト５Ｂの図１５に示す第２嵌合部５０２Ｂは、シャフト４Ｂの回転規制部４１３Ｂに嵌まり、シャフト４Ｂの軸周り方向の移動が規制される。このため、フライト５Ｂは、シャフト４Ｂの軸周り方向の回転が規制された状態でシャフト４Ｂに取り付けられる。 When the darts 1B is in the first state shown in FIG. 13, the second fitting portion 502B shown in FIG. 15 of the flight 5B is located behind the flight mounting portion 41B of the shaft 4B. In this case, the second fitting portion 502B does not fit into the rotation restricting portion 413B, and the rotation of the shaft 4B in the axial direction is not restricted. Therefore, the flight 5B is attached to the shaft 4B in a state where the rotation of the shaft 4B in the axial direction is allowed. When the darts 1B is in the second state shown in FIG. 14, the second fitting portion 502B shown in FIG. 15 of the flight 5B fits into the rotation restricting portion 413B of the shaft 4B, and the movement of the shaft 4B in the axial direction is restricted. Will be done. Therefore, the flight 5B is attached to the shaft 4B in a state where the rotation of the shaft 4B in the axial direction is restricted.
　利用者は、例えば、以下に示すように、ダーツ１Ｂを図１３に示す第１状態から図１４に示す第２状態に変更する。まず、利用者は、第１状態にあるダーツ１Ｂのフライト５Ｂをシャフト４Ｂに対してシャフト４Ｂの軸周り方向に回転して、第２嵌合部５０２Ｂと回転規制部４１３Ｂとの位置を揃える。次に利用者は、フライト５Ｂをシャフト４Ｂに対して前方に動かして、第２嵌合部５０２Ｂを回転規制部４１３Ｂに嵌め込む。この場合、ダーツ１Ｂは、フライト５Ｂにおける二つの嵌合部分５０１１，５０１２の間の部分が、複数の突起４６０を乗り越えることで、第１状態から第２状態になる。すなわち、各突起４６０の高さは、ダーツ１Ｂが第１状態にあるとき、フライト５Ｂに対して所定の大きさ以上の前向きの力がかかったときにのみ、フライト５Ｂにおける二つの嵌合部分５０１１，５０１２の間の部分が、複数の突起４６０を乗り越えるように設定されている。 The user changes the darts 1B from the first state shown in FIG. 13 to the second state shown in FIG. 14, for example, as shown below. First, the user rotates the flight 5B of the darts 1B in the first state in the axial direction of the shaft 4B with respect to the shaft 4B, and aligns the positions of the second fitting portion 502B and the rotation restricting portion 413B. Next, the user moves the flight 5B forward with respect to the shaft 4B to fit the second fitting portion 502B into the rotation restricting portion 413B. In this case, the darts 1B changes from the first state to the second state when the portion between the two fitting portions 5011 and 5012 in the flight 5B gets over the plurality of protrusions 460. That is, the height of each protrusion 460 is such that when the darts 1B is in the first state, only when a forward force of a predetermined magnitude or more is applied to the flight 5B, the two fitting portions 5011 in the flight 5B. , 5012 is set to overcome the plurality of protrusions 460.
　回転規制部４１３Ｂは、図１５に示すように、シャフト４Ｂの周方向において部分的に形成された一つの凹部であり、フライト５Ｂの第２嵌合部５０２Ｂと、シャフト４Ｂの回転規制部４１３Ｂとは、シャフト４Ｂの周方向における位置が一致し難い。このため、不意に第１状態にあるダーツ１Ｂのフライト５Ｂがシャフト４Ｂに対して前方に移動しようとしたとしても、第２嵌合部５０２Ｂがフライト取付部４１Ｂの後端面に当たり、フライト５Ｂの前方への移動が規制されやすい。したがって、ダーツ１Ｂが第１状態にあるときには、不意にフライト５Ｂがシャフト４Ｂに対して前方に移動して、第２状態になり難い。 As shown in FIG. 15, the rotation restricting portion 413B is one recess partially formed in the circumferential direction of the shaft 4B, and includes the second fitting portion 502B of the flight 5B and the rotation restricting portion 413B of the shaft 4B. Is difficult to match the positions of the shaft 4B in the circumferential direction. Therefore, even if the flight 5B of the darts 1B in the first state unexpectedly tries to move forward with respect to the shaft 4B, the second fitting portion 502B hits the rear end surface of the flight mounting portion 41B and is in front of the flight 5B. Movement to is easily regulated. Therefore, when the darts 1B is in the first state, the flight 5B suddenly moves forward with respect to the shaft 4B, and it is difficult to enter the second state.
　図１５に示すように、複数の突起４６０のうちの一つの突起４６０の少なくとも一部と、回転規制部４１３Ｂとは、シャフト４Ｂの周方向において同じ位置に形成されている。なお、複数の突起４６０は、全て、回転規制部４１３Ｂとは、シャフト４Ｂの周方向において異なる位置に形成されてもよい。 As shown in FIG. 15, at least a part of the protrusion 460 out of the plurality of protrusions 460 and the rotation restricting portion 413B are formed at the same position in the circumferential direction of the shaft 4B. It should be noted that all of the plurality of protrusions 460 may be formed at positions different from those of the rotation restricting portion 413B in the circumferential direction of the shaft 4B.
　図１３及び図１５に示すように、フライト５Ｂの挿入部５００Ｂにおいて第１嵌合部分５０１１よりも前方に位置する部分５０３は、後端に近い部分ほど段階的又は連続的に太くなっている。図１３に示すように、挿入部５００Ｂがシャフト４Ｂの挿入穴４１０Ｂに挿入された状態では、部分５０３の外周面と挿入穴４１０Ｂの内周面との間の隙間は、部分５０３の後端に近い部分ほど小さくなる。このため、挿入部５００Ｂがシャフト４Ｂの挿入穴４１０Ｂに深く挿入された第２状態では、第１状態と比較して、挿入部５００Ｂがシャフト４Ｂの軸方向に移動し難い。したがって、ダーツ１Ｂが第２状態にあるときには、不意にフライト５Ｂがシャフト４Ｂに対し後方に移動して、ダーツ１Ｂが第１状態になることが抑制される。 As shown in FIGS. 13 and 15, the portion 503 located in front of the first fitting portion 5011 in the insertion portion 500B of the flight 5B is gradually or continuously thickened toward the rear end. As shown in FIG. 13, when the insertion portion 500B is inserted into the insertion hole 410B of the shaft 4B, the gap between the outer peripheral surface of the portion 503 and the inner peripheral surface of the insertion hole 410B is at the rear end of the portion 503. The closer it is, the smaller it becomes. Therefore, in the second state in which the insertion portion 500B is deeply inserted into the insertion hole 410B of the shaft 4B, it is difficult for the insertion portion 500B to move in the axial direction of the shaft 4B as compared with the first state. Therefore, when the darts 1B is in the second state, it is suppressed that the flight 5B suddenly moves backward with respect to the shaft 4B and the darts 1B is in the first state.
　なお、実施形態のダーツ１、変形例１のダーツ１Ａ及び変形例２のダーツ１Ｂは、本開示の主旨を逸脱しない範囲内で適宜変更可能である。例えば、ダーツ１，１Ａ，１Ｂの各要素の形状、大きさ、位置、数及び材質等は、適宜変更可能である。 The darts 1 of the embodiment, the darts 1A of the modified example 1 and the darts 1B of the modified example 2 can be appropriately changed without departing from the gist of the present disclosure. For example, the shape, size, position, number, material, etc. of each element of darts 1, 1A, 1B can be changed as appropriate.
　（３）態様
　以上説明した、実施形態及び変形例から明らかなように、第１の態様のダーツ（１，１Ａ，１Ｂ）は、以下に示す構成を有する。ダーツ（１，１Ａ，１Ｂ）は、バレル（３）と、バレル（３）に取付可能なチップ（２）と、バレル（３）に取付可能なシャフト（４，４Ｂ，４３，４４）と、シャフト（４，４Ｂ，４３，４４）に取付可能なフライト（５，５Ａ，５Ｂ，５２，５３）とを備える。ダーツ（１，１Ａ，１Ｂ）は、第１状態と、第２状態とに変更可能である。前記第１状態では、フライト（５，５Ｂ）がシャフト（４，４Ｂ，４３，４４）に回転が許容された状態で取り付けられる。前記第２状態では、フライト（５，５Ｂ）がシャフト（４，４Ｂ，４３，４４）に前記回転が規制された状態で取り付けられる。 (3) Aspects As is clear from the embodiments and modifications described above, the darts (1,1A, 1B) of the first aspect have the following configurations. The darts (1,1A, 1B) include a barrel (3), a tip (2) that can be attached to the barrel (3), and a shaft (4,4B, 43,44) that can be attached to the barrel (3). It is equipped with a flight (5,5A, 5B, 52,53) that can be attached to the shaft (4,4B, 43,44). The darts (1,1A, 1B) can be changed into a first state and a second state. In the first state, the flight (5,5B) is attached to the shaft (4,4B, 43,44) with rotation allowed. In the second state, the flight (5,5B) is attached to the shaft (4,4B, 43,44) with the rotation restricted.
　この態様のダーツ（１，１Ａ，１Ｂ）は、フライト（５，５Ｂ）のシャフト（４，４Ｂ）に対する回転を許容した状態と、前記回転を規制した状態とのいずれの状態でも利用できる。 The darts (1,1A, 1B) of this aspect can be used in either a state in which rotation of the flight (5,5B) with respect to the shaft (4,4B) is permitted or a state in which the rotation is restricted.
　第２の態様のダーツ（１，１Ａ，１Ｂ）は、第１の態様との組み合わせにより実現され得る。第２の態様のダーツ（１，１Ａ，１Ｂ）は、以下に示す構成を有する。シャフト（４，４Ｂ）は、フライト（５，５Ｂ）をシャフト（４，４Ｂ）の軸方向における位置を変更して取付可能である。ダーツ（１，１Ａ，１Ｂ）は、フライト（５，５Ｂ）がシャフト（４，４Ｂ）に取り付けられる位置に応じて、第１状態と第２状態とに変更可能である。 The darts (1,1A, 1B) of the second aspect can be realized by the combination with the first aspect. The darts (1,1A, 1B) of the second aspect have the following configurations. The shaft (4,4B) can be attached by changing the position of the flight (5,5B) in the axial direction of the shaft (4,4B). The darts (1,1A, 1B) can be changed between the first state and the second state depending on the position where the flight (5,5B) is attached to the shaft (4,4B).
　この態様のダーツ（１，１Ａ，１Ｂ）は、フライト（５，５Ｂ）のシャフト（４，４Ｂ）への取付位置を変更することで、フライト（５，５Ｂ）のシャフト（４，４Ｂ）に対する回転を許容した状態と、前記回転を規制した状態とに変更することができる。 The darts (1,1A, 1B) of this aspect are relative to the shaft (4,4B) of the flight (5,5B) by changing the mounting position of the flight (5,5B) to the shaft (4,4B). It is possible to change between a state in which rotation is permitted and a state in which rotation is restricted.
　第３の態様のダーツ（１，１Ａ，１Ｂ）は、第２の態様との組み合わせにより実現され得る。第３の態様のダーツ（１，１Ａ，１Ｂ）は、以下に示す構成を有する。シャフト（４，４Ｂ）は、挿入穴（４１０，４１０Ｂ）を有する。フライト（５，５Ｂ）は、挿入穴（４１０，４１０Ｂ）に回転可能に挿入し得る挿入部（５００，５００Ｂ）を有する。前記第１状態では、挿入部（５００，５００Ｂ）が挿入穴（４１０，４１０Ｂ）に第１挿入量だけ挿入され、かつ、シャフト（４，４Ｂ）が前記回転を許容しつつフライト（５，５Ｂ）のシャフト（４，４Ｂ）に対する前記軸方向の移動を規制する。前記第２状態では、挿入部（５００，５００Ｂ）が挿入穴（４１０，４１０Ｂ）に第１挿入量よりも大きな第２挿入量挿入され、かつ、シャフト（４，４Ｂ）が前記回転を規制しつつフライト（５，５Ｂ）のシャフト（４，４Ｂ）に対する前記軸方向の移動を規制する。 The darts (1,1A, 1B) of the third aspect can be realized by the combination with the second aspect. The darts (1,1A, 1B) of the third aspect have the following configurations. The shaft (4,4B) has insertion holes (410,410B). The flight (5,5B) has an insertion section (500,500B) that can be rotatably inserted into the insertion hole (410,410B). In the first state, the insertion portion (500,500B) is inserted into the insertion hole (410,410B) by the first insertion amount, and the shaft (4,4B) allows the rotation while flying (5,5B). ) Is restricted from moving in the axial direction with respect to the shaft (4, 4B). In the second state, the insertion portion (500,500B) is inserted into the insertion hole (410,410B) by a second insertion amount larger than the first insertion amount, and the shaft (4,4B) regulates the rotation. While restricting the axial movement of the flight (5,5B) with respect to the shaft (4,4B).
　この態様のダーツ（１，１Ａ，１Ｂ）は、挿入部（５００，５００Ｂ）の挿入穴（４１０，４１０Ｂ）に対する挿入量を変更することで、フライト（５，５Ｂ）のシャフト（４，４Ｂ）に対する回転を許容した状態と、前記回転を規制した状態とに変更することができる。 In the darts (1,1A, 1B) of this embodiment, the shaft (4,4B) of the flight (5,5B) is formed by changing the insertion amount of the insertion portion (500,500B) into the insertion hole (410,410B). It is possible to change between a state in which rotation is permitted and a state in which the rotation is restricted.
　第４の態様のダーツ（１Ｂ）は、第３の態様との組み合わせにより実現され得る。第４の態様のダーツ（１Ｂ）は、以下に示す構成を有する。フライト（５Ｂ）は、第１嵌合部分（５０１１）と、第２嵌合部分（５０１２）とを有する。第１嵌合部分（５０１１）は、挿入部（５００Ｂ）の外周面に形成される。第２嵌合部分（５０１２）は、挿入部（５００Ｂ）の外周面に形成され、前記軸方向において第１嵌合部分（５０１１）と異なる位置に形成される。シャフト（４Ｂ）は、移動規制部（４６）と、回転規制部（４１３Ｂ）とを有する。移動規制部（４６）は、前記第１状態において第１嵌合部分（５０１１）と嵌合してフライト（５Ｂ）の前記軸方向の移動を規制し、かつ、前記第２状態において第２嵌合部分（５０１２）と嵌合してフライト（５Ｂ）の前記軸方向の移動を規制する。回転規制部（４１３Ｂ）は、前記第２状態において挿入部（５００Ｂ）の挿入穴（４１０Ｂ）に対する回転を規制する。 The darts (1B) of the fourth aspect can be realized by the combination with the third aspect. The darts (1B) of the fourth aspect has the configuration shown below. The flight (5B) has a first fitting portion (5011) and a second fitting portion (5012). The first fitting portion (5011) is formed on the outer peripheral surface of the insertion portion (500B). The second fitting portion (5012) is formed on the outer peripheral surface of the insertion portion (500B), and is formed at a position different from that of the first fitting portion (5011) in the axial direction. The shaft (4B) has a movement restricting unit (46) and a rotation restricting unit (413B). The movement restricting unit (46) is fitted with the first fitting portion (5011) in the first state to regulate the axial movement of the flight (5B), and is second fitted in the second state. It fits with the joint portion (5012) to regulate the axial movement of the flight (5B). The rotation control unit (413B) regulates the rotation of the insertion unit (500B) with respect to the insertion hole (410B) in the second state.
　この態様によれば、フライト（５Ｂ）が有する第１嵌合部分（５０１１）及び第２嵌合部分（５０１２）並びにシャフト（４Ｂ）が有する移動規制部（４６）及び回転規制部（４１３Ｂ）を利用して、ダーツ（１Ｂ）を、フライト（５Ｂ）のシャフト（４Ｂ）に対する回転を許容した状態と、前記回転を規制した状態とに変更することができる。 According to this aspect, the first fitting portion (5011) and the second fitting portion (5012) included in the flight (5B), and the movement restricting portion (46) and the rotation restricting portion (413B) included in the shaft (4B) are provided. It can be used to change the darts (1B) into a state in which rotation of the flight (5B) with respect to the shaft (4B) is allowed and a state in which the rotation is restricted.
　第５の態様のダーツ（１，１Ａ，１Ｂ）は、第１～第４の態様のいずれか一つの態様との組み合わせにより実現され得る。第５の態様のダーツ（１，１Ａ，１Ｂ）は、以下に示す構成を有する。チップ（２）、シャフト（４，４Ｂ，４３，４４）及びフライト（５，５Ｂ，５Ａ，５２，５３）の少なくとも一つは、合成樹脂と自然界に存在する物質とを含む材料から形成されている。 The darts (1,1A, 1B) of the fifth aspect can be realized by combining with any one of the first to fourth aspects. The darts (1,1A, 1B) of the fifth aspect have the following configurations. At least one of the tip (2), shaft (4,4B, 43,44) and flight (5,5B, 5A, 52,53) is formed from a material containing synthetic resin and naturally occurring substances. There is.
　この態様によれば、チップ（２）、シャフト（４，４Ｂ，４３，４４）及びフライト（５，５Ａ，５Ｂ，５２，５３）の各々の材料として、自然界に存在する物質を含む材料を用いることで、自然環境の保全に役立つ。 According to this aspect, as the material of each of the tip (2), the shaft (4,4B, 43,44) and the flight (5,5A, 5B, 52,53), a material containing a substance existing in nature is used. This helps to preserve the natural environment.
　第６の態様のダーツ用のシャフト（４，４Ｂ，４３，４４）は、以下に示す構成を有する。シャフト（４，４Ｂ，４３，４４）は、ダーツ用のフライト（５，５Ａ，５Ｂ，５２，５３）を取付可能なフライト取付部（４１，４１Ａ，４１Ｂ）を備える。シャフト（４，４３，４４）は、第１状態と、第２状態とに変更可能である。前記第１状態では、フライト（５，５Ａ，５Ｂ，５２，５３）がフライト取付部（４１，４１Ａ，４１Ｂ）に回転が許容された状態で取り付けられる。前記第２状態では、フライト（５，５Ａ，５Ｂ，５２，５３）がフライト取付部（４１，４１Ａ，４１Ｂ）に前記回転が規制された状態で取り付けられる。 The shaft for darts (4,4B, 43,44) of the sixth aspect has the following configuration. The shaft (4,4B, 43,44) includes a flight mounting portion (41, 41A, 41B) to which a flight for darts (5, 5A, 5B, 52, 53) can be mounted. The shaft (4,43,44) can be changed between the first state and the second state. In the first state, the flight (5,5A, 5B, 52,53) is attached to the flight attachment portion (41,41A, 41B) in a state where rotation is allowed. In the second state, the flight (5,5A, 5B, 52,53) is attached to the flight attachment portion (41,41A, 41B) in a state where the rotation is restricted.
　この態様のダーツ用のシャフト（４，４Ｂ，４３，４４）は、フライト（５，５Ａ，５Ｂ，５２，５３）のシャフト（４，４Ｂ，４３，４４）に対する回転を許容した状態と、前記回転を規制した状態とのいずれの状態でも利用できる。 The shaft (4,4B, 43,44) for darts in this embodiment is in a state where the flight (5,5A, 5B, 52,53) is allowed to rotate with respect to the shaft (4,4B, 43,44). It can be used in either the state where rotation is restricted.
　第７の態様のダーツ（１Ａ）は、以下に示す構成を有する。ダーツ（１Ａ）は、バレル（３）と、バレル（３）に取付可能なチップ（２）と、バレル（３）に取付可能なシャフト（第３シャフト）と、シャフトに取付可能な複数のフライト（第２フライト５２及び第３フライト５３）とを備える。シャフトは、バレル（３）を取付可能なシャフト本体（第２シャフト４４）と、複数のアタッチメント（第１アタッチメント６１及び第２アタッチメント６２）とを有する。複数のアタッチメント（６１，６２）の各々は、シャフト本体（４４）に取付可能である。複数のアタッチメント（６１，６２）は、第１アタッチメント（６１）と、第２アタッチメント（６２）とを含む。第１アタッチメント（６１）は、複数のフライト（５２，５３）に含まれる一つのフライト（第２フライト５２）を第１アタッチメント（６１）に対する回転を許容した状態で取付可能である。第２アタッチメント（６２）は、複数のフライト（５２，５３）に含まれる前記一つのフライト（５２）とは別のフライト（第３フライト５３）を第２アタッチメント（６２）に対する回転を規制した状態で取付可能である。 The darts (1A) of the seventh aspect has the following configuration. The darts (1A) are a barrel (3), a tip (2) that can be attached to the barrel (3), a shaft (third shaft) that can be attached to the barrel (3), and a plurality of flights that can be attached to the shaft. (Second flight 52 and third flight 53). The shaft has a shaft body (second shaft 44) to which the barrel (3) can be attached, and a plurality of attachments (first attachment 61 and second attachment 62). Each of the plurality of attachments (61, 62) can be attached to the shaft body (44). The plurality of attachments (61, 62) include a first attachment (61) and a second attachment (62). The first attachment (61) can be attached in a state where one flight (second flight 52) included in the plurality of flights (52, 53) is allowed to rotate with respect to the first attachment (61). The second attachment (62) is a state in which the rotation of a flight (third flight 53) different from the one flight (52) included in the plurality of flights (52, 53) with respect to the second attachment (62) is restricted. It can be installed with.
　この態様のダーツ（１Ａ）は、シャフト本体（４４）に取り付けられるアタッチメント（６１，６２）を選択することで、フライト（５２，５３）がシャフトに対する回転が許容された状態と、前記回転が規制された状態のいずれの状態にもすることができる。 In the darts (1A) of this aspect, by selecting the attachment (61,62) attached to the shaft body (44), the flight (52,53) is allowed to rotate with respect to the shaft, and the rotation is restricted. It can be in any of the states that have been set.
　第８の態様のダーツ（１Ａ）は、第７の態様との組み合わせにより実現され得る。第８の態様のダーツ（１Ａ）は、以下に示す構成を有する。ダーツ（１Ａ）は、複数のフライト（５２，５３）とは別のフライト（５Ａ）を更に備える。シャフト本体（４４）は、第１アタッチメント（６１）、第２アタッチメント（６２）及び複数のフライト（５２，５３）とは別のフライト（５Ａ）の各々を嵌込可能な挿入穴（４１０Ａ）を有する。シャフト本体（４４）は、挿入穴（４１０Ａ）に嵌め込まれた第１アタッチメント（６１）のシャフト本体（４４）に対する回転と、挿入穴（４１０Ａ）に嵌め込まれた第２アタッチメント（６２）のシャフト本体（４４）に対する回転と、挿入穴（４１０Ａ）に嵌め込まれた別のフライト（５Ａ）のシャフト本体（４４）に対する回転とを規制する。 The darts (1A) of the eighth aspect can be realized in combination with the seventh aspect. The darts (1A) of the eighth aspect has the configuration shown below. The darts (1A) further comprises a flight (5A) separate from the plurality of flights (52,53). The shaft body (44) has an insertion hole (410A) into which each of the first attachment (61), the second attachment (62) and the flight (5A) different from the plurality of flights (52,53) can be inserted. Have. The shaft body (44) is the rotation of the first attachment (61) fitted in the insertion hole (410A) with respect to the shaft body (44) and the shaft body of the second attachment (62) fitted in the insertion hole (410A). It regulates rotation with respect to (44) and rotation with respect to the shaft body (44) of another flight (5A) fitted in the insertion hole (410A).
　この態様のダーツ（１Ａ）は、シャフト本体（４４）に複数のフライト（５２，５３）とは別のフライト（５Ａ）を取り付けて利用できる。 The darts (1A) of this aspect can be used by attaching a flight (5A) different from the plurality of flights (52,53) to the shaft body (44).
　第９の態様のダーツ（１Ａ）は、第８の態様との組み合わせにより実現され得る。第９の態様のダーツ（１Ａ）は、以下に示す構成を有する。ダーツ（１Ａ）は、シャフト（第３シャフト）とは別の第２シャフト（４４）を更に備える。第２シャフト（４４）は、バレル（３）に取付可能である。第２シャフト（４４）は、複数のフライト（５２，５３）とは別のフライト（５Ａ）を第２シャフト（４４）に対する回転を許容した状態で嵌込可能な挿入穴（４１０Ａ）を有する。 The darts (1A) of the ninth aspect can be realized by the combination with the eighth aspect. The darts (1A) of the ninth aspect has the configuration shown below. The darts (1A) further include a second shaft (44) separate from the shaft (third shaft). The second shaft (44) can be attached to the barrel (3). The second shaft (44) has an insertion hole (410A) into which a flight (5A) different from the plurality of flights (52, 53) can be fitted while allowing rotation with respect to the second shaft (44).
　この態様によれば、バレル（３）に第２シャフト（４４）を取り付け、第２シャフト（４４）に複数のフライト（５２，５３）とは別のフライト（５Ａ）を第２シャフト（４４）に対する回転を許容した状態で取り付けることができる。 According to this aspect, the second shaft (44) is attached to the barrel (3), and a flight (5A) different from the plurality of flights (52,53) is attached to the second shaft (44). It can be installed in a state that allows rotation with respect to the.
　なお、第７～第９の態様は、第１～第６のいずれか一つの態様と組み合わせずに実施してもよいし、第１～第６のいずれか一つの態様と組み合わせて実施してもよい。 The seventh to ninth aspects may be carried out without being combined with any one of the first to sixth aspects, or may be carried out in combination with any one of the first to sixth aspects. May be good.
　第１０の態様のダーツ（１，１Ａ）は、第３の態様との組み合わせにより実現され得る。第１０の態様のダーツ（１，１Ａ）は、以下に示す構成を有する。シャフト（４）は、第１移動規制部（４２）、第２移動規制部（４１２）及び回転規制部（４１６）を有する。第１移動規制部（４２）は、挿入穴（４１０）の内面に形成され、第１状態において挿入部（５００）が前記軸方向に移動することを規制する。第２移動規制部（４１２）は、挿入穴（４１０）の内面に形成され、第２状態において挿入部（５００）が前記軸方向に移動することを規制する。回転規制部（４１６）は、第２状態において挿入部（５００）の挿入穴（４１０）に対する回転を規制する。 The darts (1, 1A) of the tenth aspect can be realized by the combination with the third aspect. The darts (1,1A) of the tenth aspect have the following configurations. The shaft (4) has a first movement restricting unit (42), a second movement restricting unit (412), and a rotation restricting unit (416). The first movement restricting portion (42) is formed on the inner surface of the insertion hole (410), and restricts the insertion portion (500) from moving in the axial direction in the first state. The second movement restricting portion (412) is formed on the inner surface of the insertion hole (410), and restricts the insertion portion (500) from moving in the axial direction in the second state. The rotation control unit (416) regulates the rotation of the insertion unit (500) with respect to the insertion hole (410) in the second state.
　この態様のダーツ（１，１Ａ）は、シャフト（４）が有する第１移動規制部（４２）、第２移動規制部（４１２）及び回転規制部（４１６）を利用して、フライト（５）のシャフト（４）に対する回転を許容した状態と、前記回転を規制した状態とに変更することができる。 The darts (1,1A) of this aspect utilize the first movement control unit (42), the second movement control unit (412), and the rotation control unit (416) of the shaft (4) to fly (5). The state in which the rotation of the shaft (4) is allowed and the state in which the rotation is restricted can be changed.
　１，１Ａ，１Ｂ　ダーツ
　２　チップ
　３　バレル
　４，４Ｂ　シャフト
　４１，４１Ｂ　フライト取付部
　４１０，４１０Ｂ　挿入穴
　４１３Ｂ　回転規制部
　４６　移動規制部
　５，５Ｂ　フライト
　５００，５００Ｂ　挿入部
　５０１１　第１嵌合部分
　５０１２　第２嵌合部分 1,1A, 1B Darts 2 Tip 3 Barrel 4, 4B Shaft 41,41B Flight mounting part 410,410B Insertion hole 413B Rotation regulation part 46 Movement regulation part 5,5B Flight 500,500B Insertion part 5011 1st fitting part 5012 1st 2 Fitting part

Claims (6)

  1. 　バレルと、
    　前記バレルに取付可能なチップと、
    　前記バレルに取付可能なシャフトと、
    　前記シャフトに取付可能なフライトとを備え、
    　前記フライトが前記シャフトに回転が許容された状態で取り付けられる第１状態と、前記フライトが前記シャフトに前記回転が規制された状態で取り付けられる第２状態とに変更可能である、
    　ダーツ。     With a barrel,
    A tip that can be attached to the barrel and
    A shaft that can be attached to the barrel and
    Equipped with a flight that can be attached to the shaft
    It is possible to change between a first state in which the flight is attached to the shaft in a state in which rotation is permitted, and a second state in which the flight is attached to the shaft in a state in which the rotation is restricted.
    darts.
  2. 　前記シャフトは、前記フライトを前記シャフトの軸方向における位置を変更して取付可能であり、
    　前記フライトが前記シャフトに取り付けられる位置に応じて、前記第１状態と前記第２状態とに変更可能である、
    　請求項１に記載のダーツ。     The shaft can be mounted by changing the position of the flight in the axial direction of the shaft.
    The flight can be changed between the first state and the second state depending on the position where the flight is attached to the shaft.
    The darts according to claim 1.
  3. 　前記シャフトは、挿入穴を有し、
    　前記フライトは、前記挿入穴に回転可能に挿入し得る挿入部を有し、
    　前記第１状態では、前記挿入部が前記挿入穴に第１挿入量だけ挿入され、かつ、前記シャフトが前記回転を許容しつつ前記フライトの前記シャフトに対する前記軸方向の移動を規制し、
    　前記第２状態では、前記挿入部が前記挿入穴に前記第１挿入量よりも大きな第２挿入量挿入され、かつ、前記シャフトが前記回転を規制しつつ前記フライトの前記シャフトに対する前記軸方向の移動を規制する、
    　請求項２に記載のダーツ。     The shaft has an insertion hole and
    The flight has an insert that can be rotatably inserted into the insertion hole.
    In the first state, the insertion portion is inserted into the insertion hole by the first insertion amount, and the shaft restricts the axial movement of the flight with respect to the shaft while allowing the rotation.
    In the second state, the insertion portion is inserted into the insertion hole by a second insertion amount larger than the first insertion amount, and the shaft regulates the rotation of the flight in the axial direction with respect to the shaft. Regulate movement,
    The darts according to claim 2.
  4. 　前記フライトは、
    　　前記挿入部の外周面に形成された第１嵌合部分と、
    　　前記挿入部の外周面に形成され、前記軸方向において前記第１嵌合部分と異なる位置に形成された第２嵌合部分とを有し、
    　前記シャフトは、
    　前記第１状態において前記第１嵌合部分と嵌合して前記フライトの前記軸方向の移動を規制し、かつ、前記第２状態において前記第２嵌合部分と嵌合して前記フライトの前記軸方向の移動を規制する移動規制部と、
    　前記第２状態において前記挿入部の前記挿入穴に対する回転を規制する回転規制部とを有する、
    　請求項３に記載のダーツ。     The flight
    The first fitting portion formed on the outer peripheral surface of the insertion portion and
    It has a second fitting portion formed on the outer peripheral surface of the insertion portion and formed at a position different from that of the first fitting portion in the axial direction.
    The shaft is
    In the first state, the flight is fitted with the first fitting portion to restrict the axial movement of the flight, and in the second state, the flight is fitted with the second fitting portion. A movement control unit that regulates axial movement,
    It has a rotation restricting portion that regulates the rotation of the insertion portion with respect to the insertion hole in the second state.
    The darts according to claim 3.
  5. 　前記チップ、前記シャフト及び前記フライトの少なくとも一つは、合成樹脂と自然界に存在する物質とを含む材料から形成されている、
    　請求項１～４のいずれか１項に記載のダーツ。     At least one of the tip, the shaft and the flight is made of a material containing a synthetic resin and a naturally occurring substance.
    The darts according to any one of claims 1 to 4.
  6. 　ダーツ用のフライトを取付可能なフライト取付部を備え、
    　前記フライトが前記フライト取付部に回転が許容された状態で取り付けられる第１状態と、前記フライトが前記フライト取付部に前記回転が規制された状態で取り付けられる第２状態とに変更可能である、
    　ダーツ用のシャフト。     Equipped with a flight mounting part that can mount a flight for darts,
    It is possible to change between a first state in which the flight is attached to the flight attachment portion in a state where rotation is permitted, and a second state in which the flight is attached to the flight attachment portion in a state in which the rotation is restricted.
    Shaft for darts.
PCT/JP2020/048958 2020-07-21 2020-12-25 Dart and shaft for dart WO2022018886A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842285A (en) * 1986-05-29 1989-06-27 Farler Charles W Anti-bounce-out dart
JP2008264192A (en) * 2007-04-20 2008-11-06 Yuji Takahashi Dart
WO2010054412A2 (en) * 2008-11-10 2010-05-14 Alistair Richard Abell An advertising device
JP2011110413A (en) * 2009-11-26 2011-06-09 Chuyo Seiko Co Ltd Dart
US20160231092A1 (en) * 2015-02-06 2016-08-11 Hamada Kousyou Co., Ltd. Flight unit and dart

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842285A (en) * 1986-05-29 1989-06-27 Farler Charles W Anti-bounce-out dart
JP2008264192A (en) * 2007-04-20 2008-11-06 Yuji Takahashi Dart
WO2010054412A2 (en) * 2008-11-10 2010-05-14 Alistair Richard Abell An advertising device
JP2011110413A (en) * 2009-11-26 2011-06-09 Chuyo Seiko Co Ltd Dart
US20160231092A1 (en) * 2015-02-06 2016-08-11 Hamada Kousyou Co., Ltd. Flight unit and dart

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