WO2022018886A1 - Dart and shaft for dart - Google Patents

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

Darts and shafts for darts

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.

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.

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.

Japanese Unexamined Patent Publication No. 2014-239834

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.

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.

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.

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, 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. 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, and 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, and 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, and 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, and 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, and FIG. 11D is a sectional view of the first attachment. Is. 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.

Hereinafter, the darts of the present disclosure and the shaft for darts will be described.

(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.

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.

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".

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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. ..

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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) Modification Example Next, a modification of the above embodiment will be described.

(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.

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.

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.

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. 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.

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.

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.

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.

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.

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.

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.

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.

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.

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. 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.

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.

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.

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.

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. 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.

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.

(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.

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. 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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) 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.

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). 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).

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.

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.

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.

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.

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.

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.

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.

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).

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).

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.

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.

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. 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. 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. 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. 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. 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. 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.

Images