Swing practice device and swing practice head component

Abstract

To provide a swing practice device allowing a user to effectively correcting a form of a swing.SOLUTION: A swing training device S100 includes a head component 10, a first shaft member 20 with the head component 10 provided on a tip end side, and a second shaft member 30 connected to at least one of the head component 10 and the first shaft member 20 and provided at an angle with respect to the first shaft member 20 so that a distance to the first shaft member 20 becomes shorter toward the head component 10 side.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a swing practice tool and a head component for swing practice.

Background Art

[0002] Conventionally, there is known a golf swing trainer that corrects the swing form by a user gripping it with both hands and performing a swing motion (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional swing trainer, since the grip portions of one hand and the other hand are located in the same plane in the toe - heel direction while the user is holding the swing trainer, there is a problem that the swing form cannot be sufficiently corrected.

[0005] Therefore, the present invention has been made in view of these points, and an object thereof is to provide a swing practice tool and a head component for swing practice that can correct the swing form well.

Means for Solving the Problems

[0006] In a first aspect of the present invention, there is provided a swing practice tool including a head component, a first shaft member provided with the head component on the tip side, and a second shaft member connected to at least one of the head component or the first shaft member and inclined with respect to the first shaft member such that the distance to the first shaft member becomes shorter as it goes toward the side of the head component.

[0007] The first shaft member and the second shaft member may be arranged in a direction in which the center line of the first shaft member and the center line of the second shaft member do not intersect in a three-dimensional space.

[0008] The first shaft member may be connected to a position on the toe side of the head component, and the second shaft member may be connected to a position on the heel side of the head component.

[0009] The center of gravity of the head component may be on the side of the head component opposite to the face surface with respect to a straight line connecting the connection point between the first shaft member and the head component and the connection point between the second shaft member and the head component.

[0010] A protruding portion may be provided at the base end portion of the second shaft member, against which a part of the palm abuts when the user grips the second shaft member.

[0011] A part of the first shaft member and a part of the second shaft member may be connected to each other by a connecting member.

[0012] The connecting member may be formed in a bent shape so that a clearance-shaped relief portion is formed between the base end portion of the first shaft member and the base end portion of the second shaft member.

[0013] The head component may include a head body imitating the shape of a golf club and an attachment member configured to be attached to the head body and having a face surface formed in a direction different from the direction of the face surface of the head body when attached to the head body.

[0014] In a second aspect of the present invention, there is provided a swing practice head component including a shaft connection portion in which a cylindrical first recess into which a first shaft member is inserted and a cylindrical second recess into which a second shaft member is inserted are formed, wherein the center line of the first recess and the center line of the second recess are not parallel to each other and do not intersect in a three-dimensional space, and the first shaft member and the second shaft member are connected in a shape such that the distance between the first shaft member and the second shaft member becomes shorter as it approaches the shaft connection portion.

[0015] The swing practice head component may further include a head body coupled to the shaft connection portion, wherein the first recess is provided at a toe side position of the head body, and the second recess is provided at a heel side position of the head body.

[0016] In a third aspect of the present invention, there is provided a swing practice tool including a first bat and a second bat having a tip side connected to the first bat and inclined with respect to the first bat such that the distance to the first bat becomes shorter as it approaches the tip side.

[0017] The first bat and the second bat are arranged in a direction in which the center line of the first bat and the center line of the second bat do not intersect in a three-dimensional space, and the first bat may be formed such that the protruding length from the connection portion between the first bat and the second bat is shorter than the protruding length of the second bat.

[0018] A protruding portion may be provided at a base end portion of the second bat, against which a part of the palm abuts when the user holds the second bat.

[0019] The color of the first bat and the color of the second bat may be different from each other.

Advantages of the Invention

[0020] According to the present invention, there is an effect that a swing practice tool and a head component for swing practice that can favorably correct the form of a swing can be provided.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Mode for Carrying Out the Invention

[0022] <First Embodiment> FIG. 1 is a perspective view showing the swing practice tool of the first embodiment. FIG. 2 is a view of the swing practice tool seen from various directions. FIG. 2(a) is a front view, FIG. 2(b) is a left side view, and FIG. 2(c) is a plan view. FIG. 3 is a perspective view showing the swing practice tool seen from the viewpoint of a user who holds and uses the swing practice tool. FIG. 4 is a view of the swing practice tool seen from the extending direction of the center line of the first shaft member.

[0023] Note that the swing practice tool of the present invention can be used not only for golf but also for practicing the swing of sports such as baseball or tennis (for example, sports including an operation of swinging a rod-shaped object with both hands). In this embodiment, a practice tool for golf is exemplified. The swing practice tool S100 in FIG. 2 is drawn in the posture of the "reference state" in a golf club. The "reference posture" means a state in which the golf club is held at a lie angle and a loft angle defined for its head and placed on a horizontal plane.

[0024] The swing practice tool S100 is a tool for correcting the form of a golf swing. Specifically, as will be described later with reference to FIGS. 5 to 7, when the user holds the swing practice tool S100 with both hands crossed and swings it, the swing practice tool S100 can correct both the takeback and follow-through forms well because the user's sides are firmly tightened at address and the back of the right hand faces the back of the left hand.

[0025] As shown in FIGS. 1 and 2, the swing practice tool S100 includes a head component 10, a first shaft member 20, a second shaft member 30, and a connecting member 40.

[0026] The head component 10 has a head body 11 and a shaft connection portion 15. The head body 11 is formed in a shape imitating the head of a golf club. The head body 11 is a wood type in this example and has a face surface 11a. The head body 11 is not limited to the wood type and may be an iron type.

[0027] The shaft connection portion 15 is a hosel portion provided on a part of the upper surface of the head body 11. The shaft connection portion 15 is provided so as to protrude from the upper surface of the head body 11. The shaft connection portion 15 is a portion to which the first shaft member 20 and the second shaft member 30 are connected.

[0028] The first shaft member 20 is a rod-shaped member. As shown in FIG. 2, the first shaft member 20 has a tip end portion 21 and a base end portion 22. The first shaft member 20 extends along the direction of the center line CLa. The tip end portion 21 of the first shaft member 20 is connected to the shaft connection portion 15. The tip end portion 21 may be fixedly connected to the shaft connection portion 15 or may be removably connected. The configuration in which the first shaft member 20 is removably connected to the shaft connection portion 15 will be described later with reference to other drawings.

[0029] The base end portion 22 of the first shaft member 20 is a portion that is gripped by the user as will be described later. The base end portion 22 may be provided with, for example, a grip portion (not shown) made of rubber.

[0030] Similar to the first shaft member 20, the second shaft member 30 is also a rod-shaped member. The second shaft member 30 has a tip end portion 31 and a base end portion 32, and the tip end portion 31 is connected to the shaft connection portion 15. The base end portion 32 is a portion that is gripped by the user as will be described later.

[0031] Similar to the first shaft member 20, the tip end portion 31 of the second shaft member 30 may be fixedly connected to the shaft connection portion 15 or may be removably connected. The base end portion 32 may be provided with, for example, a grip portion (not shown) made of rubber.

[0032] As shown in FIGS. 2 and 3, the second shaft member 30 is provided so as to be inclined with respect to the first shaft member 20. Specifically, when the swing training tool S100 is viewed from the side as shown in FIG. 2(b), the first shaft member 20, the second shaft member 30, and the connecting member 40 are arranged in a positional relationship such that they form a triangle. The base end portion 22 of the first shaft member 20 and the base end portion 32 of the second shaft member 30 are sufficiently separated from each other so that the user can grip the first shaft member 20 with one hand and the second shaft member 30 with the other hand (see FIG. 5).

[0033] The second shaft member 30 is inclined with respect to the first shaft member 20 such that the distance to the first shaft member 20 becomes shorter as it approaches the head component 10. Here, "the distance becomes shorter" means that, as shown in FIG. 2(b), the distance between the cross section of the first shaft member 20 and the cross section of the second shaft member 30 on the plane S orthogonal to the center line CLa of the first shaft member 20 becomes shorter.

[0034] The first shaft member 20 and the second shaft member 30 may be arranged such that the center line CLa of the first shaft member 20 intersects the center line CLb of the second shaft member 30. However, in the present embodiment, they are provided such that the center line CLa and the center line CLb do not intersect in the three-dimensional space. As shown in FIG. 4, the first shaft member 20 is provided such that its center line CLa extends on the first plane Sa, and the second shaft member 30 is provided such that the center line CLb extends on a second plane Sb different from the first plane Sa.

[0035] In the present embodiment, the first shaft member 20 is connected to the toe side position of the shaft connection portion 15. The second shaft member 30 is connected to the heel side position of the shaft connection portion 15. In the example of FIG. 4, the first shaft member 20 and the second shaft member 30 are provided in an arrangement where the center lines of the respective shaft members are located on a reference line L extending in the toe-heel direction.

[0036] Referring to FIG. 2 again. The connecting member 40 is a member that connects the first shaft member 20 and the second shaft member 30. In this example, the connecting member 40 connects the proximal end portion 22 of the first shaft member 20 and the proximal end portion 32 of the second shaft member 30. In the present embodiment, the connecting member 40 is a linearly extending member, but the connecting member 40 is not limited to a specific shape. The connecting member 40 may connect a part other than the proximal end portion 22 of the first shaft member 20 and a part other than the proximal end portion 32 of the second shaft member 30.

[0037] In the present embodiment, as shown in FIG. 4, the center of gravity G of the head component 10 is located on the side opposite to the face surface 11a with respect to the reference line L, which is a straight line connecting the connection point between the first shaft member 20 and the head component 10 and the connection point between the second shaft member 30 and the head component 10.

[0038] (Method of using the swing practice tool S100) FIG. 5 is a diagram showing a state in which a user holds the swing practice tool. FIG. 6 is a diagram showing the take-back state. FIG. 7 is a diagram showing the follow-through state. Hereinafter, the case of a right-handed swing will be exemplified. The right hand corresponds to the dominant hand of the user, and the left hand corresponds to the hand on the side opposite to the dominant hand.

[0039] Note that the "dominant hand" here is intended to be the dominant hand when swinging. For example, if a person writes with the left hand but swings a golf club with the right hand, the "dominant hand" here shall be the right hand.

[0040] First, as shown in FIG. 5, the user holds the first shaft member 20 with the right hand and the second shaft member 30 with the left hand in a state where both hands are crossed (the right hand is on the upper side as viewed from the user). By holding the first shaft member 20 and the second shaft member 30 in a crossed state in this way, the user can easily create a state where both sides of the body are closed, the cubital fossae face forward, and both arms are relaxed in the address posture, and can create a good form. A good form can be created with the sides of the body closed.

[0041] Next, as shown in FIG. 6, the user swings up the swing practice tool S100 while keeping both hands crossed. When holding the swing practice tool S100, the backs of the right hand and the left hand face each other. Therefore, the user swings up the swing practice tool S100 with the awareness of lifting the right hand with the left hand, so that the right side of the body is closed, overswing is prevented, and a good form can be created.

[0042] Next, as shown in FIG. 7, after impact, the user swings with the awareness of lifting the right hand with the left hand, so that the user can suppress the chicken wing by closing the left side of the body, extend the right elbow, and create a good form leading to a finish with the left scapula lowered.

[0043] (Effect of Swing Practice Tool S100) As described above, according to the swing practice tool S100 of the present embodiment, when the user holds the swing practice tool S100 with both hands crossed and swings, the swing form can be corrected well. In particular, by preventing overuse of both hands, it is possible to correct the swing with a well-balanced body turn, a good swing plane, and a good form of arm rotation. In particular, for beginners and junior golfers, starting practice with this practice tool can be expected to promote the growth of appropriate muscles and motor abilities, and as a result, efficient growth and improvement can be promoted.

[0044] Correcting the swing form with both hands crossed in this way can also be attempted, for example, with a tool in which the first shaft member 20 and the second shaft member 30 are provided parallel to each other. However, in a configuration where the first shaft member 20 and the second shaft member 30 are parallel, it is easy for a burden to be applied to the wrists when swinging with both hands crossed. On the other hand, in the swing practice tool S100 of the present embodiment, since the first shaft member 20 and the second shaft member 30 are arranged in a direction such that they approach each other toward the tip side, it is difficult for a burden to be applied to the wrists.

[0045] Further, in the configuration of the present embodiment, the center lines CLa and CLb of the first shaft member 20 and the second shaft member 30 are arranged in a direction such that they do not intersect in the three-dimensional space. According to such a configuration, the first shaft member 20 and the second shaft member 30 are arranged in a manner that is likely to form the shape of both arms when swinging in a desirable posture, so that the swing is easily corrected. In particular, when the first shaft member 20 is connected to the toe side position and the second shaft member 30 is connected to the heel side position, as shown in FIG. 4, since the first shaft member 20 is relatively on the toe side, an effect is obtained that it is easy to hold the swing practice tool S100 in the grip manner as shown in FIG. 5.

[0046] In the configuration of this embodiment, the center of gravity G of the head component 10 is located behind the reference line L as shown in FIG. 4. According to such a configuration in which the center of gravity is offset with respect to the reference line L, the user can swing the swing practice tool S100 in the same manner as an actual golf club head, and thus an effect can be obtained.

[0047] In the present invention, the connecting member 40 may not be present and the first shaft member 20 and the second shaft member 30 may not be connected to each other. However, when the first shaft member 20 and the second shaft member 30 are connected by the connecting member 40 as in this embodiment, the rigidity of the assembly composed of the first shaft member 20, the second shaft member 30, and the connecting member 40 is improved, and an effect can be obtained in that deformation and breakage of the swing practice tool S100 are less likely to occur.

[0048] <Modification 1> FIG. 8 is a perspective view of the head component 10A. The head component 10A is configured such that the first shaft member 20 and the second shaft member 30 are detachably connected. The head component 10A has a head body 11 and a shaft connection portion 15, similar to the first embodiment. The shaft connection portion 15 is formed with a first recess 16a and a second recess 16b.

[0049] The first recess 16a is a recess into which the first shaft member 20 is inserted. The first recess 16a is, for example, a cylindrical recess. On the inner surface of the first recess 16a, for example, a female screw portion into which a male screw portion formed on the first shaft member 20 is screwed is formed. The first recess 16a is formed so as to extend in the same direction as the center line CLa of the first shaft member 20. The first recess 16a is provided, for example, at a position closer to the toe side than the second recess 16b.

[0050] The second recess 16b has the same structure as the first recess 16a, except that the position and the extending direction are different from those of the first recess 16a. The second recess 16b is a recess into which the second shaft member 30 is inserted, and is formed in a cylindrical shape as an example. On the inner surface of the second recess 16b, for example, a female screw portion into which a male screw portion formed at the tip of the second shaft member 30 is screwed is formed. The second recess 16b is formed so as to extend in the same direction as the center line CLa of the second shaft member 30.

[0051] With respect to the head component 10A configured as described above, by connecting the first shaft member 20 and the second shaft member 30 and connecting the first shaft member 20 and the second shaft member 30 by a connecting member 40, a swing practice tool S100 as in the first embodiment can be manufactured. Further, the swing practice tool S100 may be configured such that part or all of the head component 10A, the first shaft member 20, the second shaft member 30, and the connecting member 40 can be removed or disassembled. By making it possible to remove or disassemble part or all of the components of the swing practice tool S100, it becomes easy to carry without being bulky.

[0052] Note that the connection of the first shaft member 20 and the second shaft member 30 to the shaft connection portion 15 is not limited to screw connection. The first shaft member 20, the second shaft member 30, and the connecting member 40 may be connected to the head component 10 as integrally formed parts. The connection between the shaft member and the shaft connection portion 15 may be such that, for example, a convex portion formed on the shaft connection portion 15 and a concave portion formed on the shaft member are coupled to each other so that the shaft member is connected to the shaft connection portion 15.

[0053] According to the head component 10A for swing practice as shown in FIG. 8, since the first shaft member 20 and the second shaft member 30 are removable, the user can connect a shaft member of a length of his or her preference to the head component 10A and adjust the length of the shaft member.

[0054] <Modification 2> FIG. 9 is a perspective view showing a modified example of the swing practice tool. As shown in FIG. 9, an overhanging portion 35 may be provided at the proximal end portion 32 of the second shaft member 30. The overhanging portion 35 is a portion where a part of the palm comes into contact when the user holds the second shaft member 30. In this example, the overhanging portion 35 is provided at the connection portion between the second shaft member 30 and the connecting member 40 and is fixed to both members. The overhanging portion 35 is not limited to the configuration of FIG. 9, and may be fixed only to the second shaft member 30 and may be formed to protrude toward the first shaft member 20 side.

[0055] When such an overhanging portion 35 is formed, when the user holds the second shaft member 30, a part of the palm comes into contact with the overhanging portion 35, and thereby the position of the hand is defined. Therefore, the user can stably hold the swing practice tool in a good orientation.

[0056] Note that the overhanging portion 35 is not limited to the shape shown in FIG. 9, and the ridge line portion may be formed in a curved surface shape, or the connection portion between the overhanging portion 35 and other members may be formed in a curved surface shape.

[0057] <Modification Example 3> FIG. 10 is a perspective view showing another modified example of the swing practice tool. When the overall weight of the swing practice tool S100 is relatively light, it is not so much of a problem. However, when the overall weight of the swing practice tool S100 is relatively heavy, there is a possibility that the connecting member 40 (see FIG. 2) may hit a part of the arm holding the swing practice tool S100 when swinging.

[0058] Therefore, in the swing practice tool S101 of FIG. 10, the first shaft member 20 and the second shaft member 30 are connected by a connecting member 40A. The connecting member 40A is formed in a bent shape. Specifically, a clearance relief portion Sc is formed in a shape such that a clearance-like relief portion Sc is formed between the proximal end portion 22 of the first shaft member 20 and the proximal end portion 32 of the second shaft member 30.

[0059] Even with the configuration shown in FIG. 10, an overhanging portion 35 as shown in FIG. 9 may be provided at the base end portion 32 of the second shaft member 30.

[0060] <Modification Example 4> FIG. 11 is a perspective view showing still another modification example of the swing practice device. In golf swings, the ideal form of the swing may vary depending on the type and shape of the club used. Therefore, in the head component 10B of the swing practice device S102 in FIG. 11, the attachment member 12 is configured to be detachably attached to the head body 11.

[0061] The head body 11 has a shape imitating that of a golf club and, as an example, has a face surface 11a. The attachment member 12 has a face surface 12a that is oriented differently from the orientation of the face surface 11a of the head body 11 when the attachment member 12 is attached to the head body 11.

[0062] According to the configuration in which the shape of the head component 10 of the swing practice device can be adjusted by attaching the attachment member 12 as shown in FIG. 11, the user can perform swing practice according to the type and shape of the club well.

[0063] In FIG. 11, an example in which the loft angles of the face surfaces are different is shown. However, the attachment member 12 may have a face surface with a face angle different from that of the face surface 11a of the head body 11. The head body 11 may not have the face surface 11a and may simply have an attachment surface to which the attachment member 12 is attached. The attachment member 12 is not limited to a configuration attached to the face surface 11a or the front surface of the head body 11, and may be configured to be attached to any part of the head body 11 or to be attached so as to cover the head body 11. The attachment member 12 may be attached for the purpose of adjusting the center of gravity.

[0064] <Modification Example 5> FIG. 12 is a diagram showing an example in which the structure of the connection portion of the shaft member is changed. As shown in FIG. 12(a), in the swing practice tool of the present invention, it is not necessary for both the first shaft member 20 and the second shaft member 30 to be connected to the head component 10. In this example, the second shaft member 30 is connected to a part of the first shaft member 20. The first shaft member 20 may be connected to a part of the second shaft member 30, and the second shaft member 30 may be connected to the head component 10.

[0065] As shown in FIG. 12(b), the head component 10 may be provided on the tip side of the first shaft member 20, and it is not necessary for the first shaft member 20 and the second shaft member 30 to be directly coupled to the head component 10. In this example, the first shaft member 20 and the second shaft member 30 are connected to the head component 10 via a connection member 18 provided separately from the head component 10. One connection member 18 may be provided for one head component 10, or a plurality of connection members 18 (for example, there may be two connection members 18, one for connecting the first shaft member 20 to the head component 10 and the other for connecting the second shaft member 30 to the head component 10) may be provided for one head component 10. The angle (the direction in which the connection member 18 protrudes with respect to the head component 10) of one or more connection members 18 may be adjustable. With such a configuration, the direction of the shaft member can be adjusted.

[0066] <Modification Example 6> FIG. 13 is a diagram showing an example in which the number of shaft members is changed. The swing practice tool shown in FIG. 13(a) includes a third shaft member 30B in addition to the first shaft member 20 and the second shaft member 30A. The second shaft member 30A is a member corresponding to the second shaft member 30 of the first embodiment. The third shaft member 30B is inclined and arranged such that the distances to the first shaft member 20 and to the second shaft member 30A become shorter as it approaches the head component 10. With such a configuration, the user can, for example, selectively practice swinging while holding the first shaft member 20 and the second shaft member 30A, and swinging while holding the first shaft member 20 and the third shaft member 30B.

[0067] As shown in FIG. 13(b), the first shaft member 20 and the second shaft member 30 may be detachable from the shaft connection portion 15. As an example, three recesses are formed in the shaft connection portion 15. For example, by removing the second shaft member 30A from a predetermined recess of the shaft connection portion 15 and reinserting it into another recess, the shaft member may be configured to function as the third shaft member 30B. The connecting member 40 may be configured to be attachable to the first shaft member 20 and the second shaft member 30A, and also attachable to the first shaft member 20 and the third shaft member 30B.

[0068] In the example of FIG. 13(a), the third shaft member 30B is provided so as to incline from the head component 10 toward the front side of the head component 10, and the second shaft member 30A is provided so as to incline from the head component 10 toward the rear side of the head component 10, and the first shaft member 20 extends between these shaft members. As illustrated in FIG. 2(b), the swing practice tool S100 of the first embodiment is provided so as to be located at positions corresponding to the first shaft member 20 and the second shaft member 30A of FIG. 13(a). However, the swing practice tool of the present invention may be provided such that one shaft member is located at a position like the second shaft member 30A and the other shaft member is located at a position like the third shaft member 30B.

[0069] The swing practice device of the present invention may be composed of materials that are the same as or similar to those of ordinary golf clubs. For example, a part, most (e.g., 70% by mass or more, the same hereinafter), or all of the head component 10 may be made of metal (titanium alloy, steel, aluminum, tungsten), wood, carbon, etc., and a part, most, or all of the shaft members (such as the first shaft member 20 and the second shaft member 30) may be made of steel, carbon, aramid fiber, etc. The swing practice device of the present invention may be configured to be able to hit an actual golf ball. On the other hand, the swing practice device of the present invention may be composed of materials that are significantly different from those of ordinary golf clubs. For example, a part, most, or all of the head component 10 or the shaft member may be made of a plastic material (such as polyolefin like polyethylene) or a rubber material, may be softer than ordinary golf clubs, may be lightweight (e.g., more than 20 g and less than 250 g), may be equivalent (e.g., 250 g or more and 500 g or less), or may be heavy (e.g., more than 500 g and 1500 g or less) compared to the weight of ordinary golf clubs. Making it softer or lighter than ordinary golf clubs allows swing practice to be carried out while suppressing the risk during an accident even in a relatively narrow space. Also, by making it heavier than ordinary golf clubs, it is easier to obtain the feel of the swing (even when the swing practice device is shortened for convenience of handling, etc.). Further, the swing practice device of the present invention may have the same length as an ordinary golf club, may be longer or shorter than that, for example, 30 cm to 120 cm, or 30 cm to 90 cm.

[0070] <Second Embodiment> In the above embodiment, the swing practice tool for golf has been described. However, the swing practice tool of the present invention may be used to correct the swing forms of baseball and softball. FIG. 14 is a perspective view showing the swing practice tool of the second embodiment. FIG. 15 is a six-sided view of the swing practice tool of FIG. 14. Specifically, FIG. 15(a) is a front view, FIG. 15(b) is a left side view, FIG. 15(c) is a right side view, FIG. 15(d) is a plan view, FIG. 15(e) is a bottom view, and FIG. 15(f) is a rear view. FIG. 16 is a view showing the state of a swing using the swing practice tool S200.

[0071] This swing practice tool S200 includes a first bat 210 and a second bat 220. The first bat 210 and the second bat 220 are coupled to each other in such a manner that the tip-side portions thereof are integrated. As a method of coupling the first bat 210 and the second bat 220, for example, the cross-section of the swing practice tool (the cross-section in a plane perpendicular to the length direction of the swing practice tool in the head portion of the swing practice tool) may be, for example, in a shape in which two circles are connected, or may be in an elliptical or oval shape.

[0072] The first bat 210 is a rod-shaped member having a head portion 211 and a grip portion 212. Similarly, the second bat 220 also has a head portion 221 and a grip portion 222.

[0073] As shown in FIG. 15(a), the first bat 210 and the second bat 220 are provided in a direction intersecting each other in a front view. Specifically, the first bat 210 and the second bat 220 are inclined with respect to each other such that the distance therebetween becomes shorter toward the tip side. In the present embodiment, the center line CLa of the first bat 210 and the center line CLa of the second bat 220 are provided so as not to intersect three-dimensionally, similar to the first embodiment.

[0074] The first bat 210 and the second bat 220 may have the same length, but in this example, the first bat 210 is formed shorter than the second bat 220. Specifically, as shown in FIG. 15, the first bat 210 is provided such that the protruding length d1 from the connection portion between the first bat 210 and the second bat 220 is shorter than the protruding length d2 of the second bat. In one example, the protruding length d1 may be 5 cm or more shorter than the protruding length d2 of the second bat, or may be 10 cm or more shorter. The effects of such a configuration will be described later in conjunction with the description of the usage method of the swing practice tool S200.

[0075] (Usage method of the swing practice tool S200) Regarding the usage method of the swing practice tool S200, taking a right-handed user as an example, it will be described below. As shown in FIG. 16, the user holds the first bat 210 with the right hand and the second bat 220 with the left hand in a state where both hands are crossed (the state where the right hand is on the upper side as seen from the user). By holding the swing practice tool S200 in such a crossed-hands state, the user can create a good form with the armpits closed.

[0076] From the top to the impact in the swing, the user moves the swing practice tool S200 with the awareness that the second bat 220 held by the left hand is in front of the swing direction. In the swing of baseball (in the case of a right-handed batter), it is said that it is good to swing the bat while being aware of a state where the back of the left hand is slightly raised with respect to the arm (the state where the back of the left hand does not extend straight from the arm). When holding the swing practice tool S200 with both hands crossed, since it is possible to naturally form such a hand shape while securing the path of the right hand, the swing form can be corrected well.

[0077] Then, from just before impact through follow-through, the user moves the swing training tool S200 with the awareness that the first bat 210 held in the right hand is in front in the swing direction. Here, by moving the swing training tool S200 with the image that the right hand overtakes the left hand, it is possible to prevent the head of the bat from coming out late and to hit the ball at a position in front in the moving direction of the ball.

[0078] (Effect of Swing Training Tool S200) As described above, according to the swing training tool S100 of the present embodiment, when the user holds the swing training tool S200 with both hands crossed and swings, it is possible to create a posture of holding the bat in a so-called state of squeezing both hands, and it is possible to correct the swing form well. Further, by moving the swing training tool S200 while being aware of the front-back relationship between the first bat 210 and the second bat 220, it is possible to create a good form of the image that the right hand overtakes the left hand.

[0079] Since the first bat 210 of the swing training tool S200 is formed shorter than the second bat 220, when the user holds the first bat with the dominant hand (here, the right hand) and crosses both hands so that the dominant hand is on top and holds the second bat 220 with the hand opposite to the dominant hand (here, the left hand), the effect that the first bat 210 is less likely to interfere with the left hand is obtained.

[0080] <Modification 1> As described above, with reference to FIG. 16, a configuration example that can be used for practicing baseball and softball swings has been shown, but the present invention is not limited to the above configuration. For example, a protruding portion may be provided at the base end portion of the second bat 220. This protruding portion is provided so as to protrude toward the side of the first bat 210, for example, and is a portion where a part of the palm comes into contact when the user holds the second bat.

[0081] Further, the color of the first bat 210 and the color of the second bat 220 may be different from each other. By having different colors for each bat in this way, the user can practice swinging well while visually being aware of the movement of the bat.

[0082] <Modification Example 2> FIG. 17 is a perspective view showing a modification of the swing practice tool of the second embodiment. The swing practice tool according to the present invention may have a shape such as that shown in FIG. 17 in addition to those having the shapes as shown in FIGS. 14 and 15. The swing practice tool S201 in FIG. 17 includes a first bat 210, a second bat 220, and a connecting portion 230. Since the first bat 210 and the second bat 220 are the same as those of the swing practice tool S200 in FIGS. 14 and 15, the description thereof will be omitted.

[0083] The connecting portion 230 is a member that mutually fixes the tip-side portion of the first bat 210 and the tip-side portion of the second bat 220. Specifically, the connecting portion 230 has a surface 231 that connects the outer peripheral surface of the tip-side portion of the first bat 210 and the outer peripheral surface of the tip-side portion of the second bat 220. By forming such a surface 231, the user can easily be aware of the direction in which the swing practice tool S201 is facing during the swing, and the effect of being able to correct the swing form well is obtained. The connecting portion 230 may be, for example, a tape or a sheet. By these tapes or sheets having adhesiveness, the connection between the first bat 210 and the second bat 220 may be realized.

[0084] In the present invention, it is not essential that the first bat 210, the second bat 220, and the connecting portion 230 are separate members from each other. The swing practice tool may be provided as an integral member having a shape in which these members are united into one. As an example, the swing practice tool may be integrally formed by blow molding or a three-dimensional printer.

[0085] <Modification Example 3> FIG. 18 is a schematic view showing another modification of the swing practice tool according to the second embodiment. FIG. 19 is a perspective view of the connecting member of FIG. 18. Although there are differences in the shape of the connecting member between FIG. 18 and FIG. 19, this is not an essential difference in the present invention. The swing practice tool of FIG. 18 has a connecting member 230A that connects two bats. As shown in FIGS. 18 and 19, the connecting member 230A is formed in a shape along the outer peripheral surface of the first bat 210 and has a first recess 230a that receives the first bat 210, and is formed in a shape along the outer peripheral surface of the second bat 220 and has a second recess 230b that receives the second bat 220.

[0086] The extending direction L1 of the first recess 230a and the extending direction L2 of the second recess 230b are oriented so that the center lines CLa and CLb of the bats fixed to the respective recesses are not three-dimensionally intersecting with each other as shown in FIG. 15.

[0087] By fixing two bats to such a connecting member 230A, a swing practice tool as shown in FIG. 15 in which the first bat and the second bat extend in different directions can be configured. Not only one connecting member 230A is used to fix two bats, but for example, a first connecting member 230A may be provided near the tip of the bat, and a second connecting member 230A may be provided at an intermediate portion in the longitudinal direction of the bat.

[0088] <Modification Example 4> FIG. 20 is a schematic view showing an example of the cross-sectional structure of the swing practice tool according to the second embodiment. In the example of FIG. 20, a joint surface 210a is formed on a part of the first bat 210, and a joint surface 220a is also formed on a part of the second bat 220. The first bat 210 and the second bat 220 are fixed in a state where the joint surfaces face each other.

[0089] <Modification Example 5> FIG. 21 is a perspective view showing a modified example of the connecting member. The connecting member 230B in FIG. 21 has a first holding portion 235 and a second holding portion 236. A first hole 235a into which a bat is inserted is formed in the first holding portion 235. A second hole 235b into which another bat is inserted is formed in the second holding portion 236. The first hole 235a and the second hole 235b extend in directions that do not intersect three-dimensionally with each other such that the center lines CLa and CLb of the bats inserted into the respective holes are in the directions as shown in FIG. 15.

[0090] With respect to such a connecting member 230B, by inserting and fixing two bats, a swing training tool as shown in FIG. 15 in which the first bat and the second bat extend in different directions can be configured.

[0091] The first bat and / or the second bat in the swing training tool S200 may be made of a material identical or similar to that of a normal bat used in baseball, softball games, etc. For example, part, most, or all of the first bat and / or the second bat may be made of aluminum, an aluminum alloy, wood, or the like. The swing training tool S200 may be configured to be able to hit a baseball or softball. On the other hand, the swing training tool S200 may be made of a material significantly different from that of a normal bat used in baseball, softball games, etc. For example, part, most, or all of the first bat and / or the second bat may be made of a plastic material (such as polyolefin like polyethylene) or a rubber material, may be softer than a normal bat, may be lightweight (for example, more than 20 g and less than 400 g), may be equivalent (for example, 400 g or more and 1 kg or less), or may be heavy (for example, more than 1 kg and 20 kg or less) compared to the weight of a normal bat. If it is softer or lighter than a normal bat, swing training can be carried out while suppressing the risk during an accident even in a relatively narrow space. Also, by making it heavier than a normal bat, it is easier to obtain a feeling of resistance in the swing (even when the swing training tool is shortened for convenience of handling, etc.). Further, the swing training tool S200 of the present invention may have the same length as a normal bat, may be longer or shorter than that, for example, may be 20 cm to 200 cm, or may be 30 cm to 60 cm.

[0092] <Single bat configuration> FIG. 22 is a diagram showing an example of a bat in which a cut surface is formed in a portion on the tip side of the bat. FIG. 22(a) is a front view, and FIG. 22(b) is a cross-sectional view taken along line A-A. The bat 240 in FIG. 22 is for right-handed use, and a cut surface 241 is formed in a portion on the tip side. Further, a protruding portion 245 is formed at the base end portion of the bat 240. The protruding portion 245 is a structural portion having the same function as the protruding portion 35 in FIG. 9, and a part of the left hand of the user holding the bat abuts thereon.

[0093] As shown in Fig. 22(b), the cut surface 241 is formed at a position on the side opposite to the side where the overhanging portion 245 is provided (the right side in the figure). Specifically, in this example, the cut surface 241 is formed so as to be inclined at an angle of approximately 45° with respect to the overhanging portion 245.

[0094] According to the configuration in which such a cut surface 241 is formed, the user can correct the golf swing and batting form well by swinging the bat 240 while being aware of the orientation of the cut surface 241. Further, since the overhanging portion 245 is formed in a positional relationship as shown in Fig. 22(b) with respect to the cut surface 241, in the case of a right-handed user, when the bat 240 is gripped, the cut surface 241 naturally faces the side of the user's face, so that there is no need for the user to re-grip the bat 240 and finely adjust the orientation of the cut surface 241.

[0095] As described above, the present invention has been described using embodiments. However, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist. For example, all or part of the device can be configured by functionally or physically dispersing and integrating it in any unit. Also, new embodiments resulting from any combination of a plurality of embodiments are included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination have the effects of the original embodiments combined.

Explanation of Reference Numerals

[0096] 10 Head component 11 Head body 11a Face surface 12 Attachment member 12a Face surface 15 Shaft connection part 16a First recess 16b Second recess 18 Connection member 20 First shaft member 21 Tip part 22 Base end part 30 Second shaft member 31 Tip 32 Base end portion 35 Protruding portion 40 Connecting member 210 First bat 211 Head portion 212 Grip portion 220 Second bat 221 Head portion 222 Grip portion 230 Connecting portion 230A Connecting member 230B Connecting member 230a First recess 230b Second recess 231 Surface 235 First holding portion 236 Second holding portion 240 Bat 241 Cut surface 245 Protruding portion S100 Swing practice tool Sa First surface Sb Second surface Sc Relief portion

Claims

1. A head component, a first shaft member provided with the head component on the tip side, a second shaft member connected to at least one of the head component or the first shaft member and inclined with respect to the first shaft member so that the distance to the first shaft member decreases toward the side of the head component, comprising: a swing practice tool.

2. The first shaft member and the second shaft member are arranged in a direction in which the center line of the first shaft member and the center line of the second shaft member do not intersect in a three-dimensional space, The swing practice tool according to Claim 1.

3. The first shaft member is connected to a position on the toe side of the head component, The second shaft member is connected to a position on the heel side of the head component, The swing practice tool according to Claim 1 or 2.

4. The center of gravity of the head component is on the side of the head component opposite to the face surface in the head component with respect to a straight line connecting the connection point between the first shaft member and the head component and the connection point between the second shaft member and the head component, The swing practice tool according to Claim 3.

5. At the base end portion of the second shaft member, an overhanging portion is provided where a part of the palm comes into contact when the user grasps the second shaft member, The swing practice tool according to Claim 1 or 2.

6. A part of the first shaft member and a part of the second shaft member are connected to each other by a connecting member, The swing practice tool according to Claim 1 or 2.

7. The connecting member is, formed in a bent shape so that a clearance-shaped relief portion is formed between the base end portion of the first shaft member and the base end portion of the second shaft member, The swing practice tool according to Claim 6.

8. The head component is, a head body imitating the shape of a golf club, an attachment member configured to be attached to the head body and forming a face surface having a direction different from the direction of the face surface of the head body when attached to the head body, having, The swing practice tool according to Claim 1 or 2.

9. It includes a shaft connection portion formed with a cylindrical first recess into which the first shaft member is inserted and a cylindrical second recess into which the second shaft member is inserted, The first recess and the second recess are, The center line of the first concave portion and the center line of the second concave portion are not parallel to each other and do not intersect in a three-dimensional space, and the first shaft member and the second shaft member are connected in a shape such that the distance between the first shaft member and the second shaft member becomes shorter as it approaches the shaft connection portion. A head component for swing practice.

10. Further comprising a head body coupled to the shaft connection portion. The first concave portion is provided at a position on the toe side of the head body. The second concave portion is provided at a position on the heel side of the head body. The head component for swing practice according to claim 9.

11. A first bat, A second bat having a tip side connected to the first bat and inclined with respect to the first bat such that the distance to the first bat becomes shorter as it approaches the tip side. Comprising: A swing practice tool.

12. The first bat and the second bat are arranged in a direction in which the center line of the first bat and the center line of the second bat do not intersect in a three-dimensional space. The first bat is formed such that the protruding length from the connection portion between the first bat and the second bat is shorter than the protruding length of the second bat. The swing practice tool according to claim 11.

13. A protruding portion is provided at the base end portion of the second bat, against which a part of the palm abuts when the user holds the second bat. The swing practice tool according to claim 11 or 12.

14. The color of the first bat is different from the color of the second bat. The swing practice tool according to claim 11 or 12.

Images