Bats and parts

Abstract

To provide a bat which can be firmly gripped with a little finger and a ring finger on a grip end side, and parts.SOLUTION: A bat 1 includes: a handle part 10 including a grip end 11 and a grip part 12; a tapered part 20 connected to the grip part 12 of the handle part 10; and a barrel part 30 connected to the tapered part 20. The grip part 12 includes: a grip part 12a gripped with a hand on the grip end 11 side; and a projection part 12b projecting outside the grip part 12a in a radial direction of the grip part 12. The projection part 12b is arranged nearer on the barrel part 30 side than the grip part 12a and is configured to be gripped with the hand on the barrel part 30.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to bats and parts.

Background Art

[0002] Conventionally, from the viewpoint of optimizing the gripping of a hitting tool that is gripped with both hands and swung, a gripping portion of the hitting tool has been proposed. For example, Japanese Patent Application Laid-Open No. 2015-084964 (Patent Document 1) describes a grip assist tool that facilitates the acquisition of correct wrist usage by a protrusion provided at the rear end portion of the grip.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When operating a hitting tool that is gripped with both hands and swung, it is effective from the viewpoint of the kinematic chain to firmly grip with the little finger and ring finger of the hand that are particularly arranged on the grip end side. However, in the grip assist tool described in the above publication, since a protrusion is provided at the rear end portion of the grip, it is difficult to firmly grip with the little finger and ring finger of the hand that are arranged on the grip end side.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a bat and parts that can be firmly gripped with the little finger and ring finger of the hand arranged on the grip end side.

Means for Solving the Problems

[0006] The bat of the present invention includes a handle portion including a grip end and a grip portion, a taper portion connected to the grip portion of the handle portion, and a barrel portion connected to the taper portion. The grip portion includes a grip portion that is gripped by the hand on the grip end side, and a protrusion that protrudes outward from the grip portion in the radial direction of the grip portion. The protrusion is disposed on the barrel portion side rather than the grip portion side, and is configured to be gripped by the hand on the barrel portion side. The protrusion has a length of 50 mm or more and 200 mm or less along the extending direction of the grip portion. It has a length equal to or greater than the hand width dimension of the hand on the barrel side along the extending direction of the grip portion, It has a length of 50 mm or more and 200 mm or less along the extending direction of the grip portion.

Advantages of the Invention

[0007] According to the present invention, it can be firmly grasped by the little finger and ring finger of the hand arranged on the grip end side.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Unless otherwise specified, the same or corresponding parts in the following drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

[0010] (Embodiment 1) With reference to FIGS. 1 and 2, the configuration of the bat 1 in Embodiment 1 of the present invention will be described. The bat 1 is a bat for baseball or softball. The bat 1 includes a handle portion 10, a taper portion 20, and a barrel portion 30. The handle portion 10, the taper portion 20, and the barrel portion 30 are arranged side by side in the extending direction of the bat 1. The handle portion 10, the taper portion 20, and the barrel portion 30 are integrally formed. The materials of the handle portion 10, the taper portion 20, and the barrel portion 30 are, for example, aluminum alloy.

[0011] The handle portion 10 is a portion for the batter to grip the bat 1. The handle portion 10 includes a grip end 11 and a grip portion 12. The grip end 11 is provided at the end on the base side of the bat 1. The grip end 11 is configured such that the diameter once becomes thick from the end on the base side of the bat 1 and then becomes thin toward the grip portion 12 side. The point where the diameter decreases most rapidly from the end on the base side of the bat 1 toward the grip portion 12 side is regarded as the end of the grip end 11 (the boundary between the grip end 11 and the grip portion 12). The grip portion 12 is connected to the grip end 11. The grip portion 12 is provided on the tip side of the bat 1 with respect to the grip end 11.

[0012] The tapered portion 20 is connected to the grip portion 12 of the handle portion 10. Further, the tapered portion 20 is connected to the barrel portion 30. The tapered portion 20 is provided between the handle portion 10 and the barrel portion 30. The tapered portion 20 gradually increases in diameter from the grip portion 12 of the handle portion 10 toward the barrel portion 30.

[0013] The barrel portion 30 is the part for hitting the ball. The barrel portion 30 is connected to the tapered portion 20. The barrel portion 30 is provided on the side opposite to the handle portion 10 with respect to the tapered portion 20.

[0014] The grip portion 12 includes a gripping portion 12a and a protruding portion 12b. The gripping portion 12a is gripped by the hand on the grip end 11 side. The protruding portion 12b protrudes outward from the gripping portion 12a in the radial direction of the grip portion 12. The protruding portion 12b is disposed on the barrel portion 30 side with respect to the gripping portion 12a. The protruding portion 12b is configured to be gripped by the hand on the barrel portion 30 side. In the case of a right-handed batter, the gripping portion 12a is gripped by the left hand, and the protruding portion 12b is gripped by the right hand. On the other hand, in the case of a left-handed batter, the gripping portion 12a is gripped by the right hand, and the protruding portion 12b is gripped by the left hand.

[0015] It is preferable that the maximum outer diameter of the protruding portion 12b is 4 mm or more and 20 mm or less larger than the maximum outer diameter of the gripping portion 12a. In the present embodiment, the diameter of the protruding portion 12b is 4 mm or more and 20 mm or less larger than the diameter of the gripping portion 12a.

[0016] The protruding portion 12b is disposed along the gripping portion 12a at a distance of at least the dimension of the hand width of the hand on the grip end side from the grip end 11. It is preferable that the end portion of the protruding portion 12b on the grip end 11 side is disposed along the gripping portion 12a at a distance of 50 mm or more and 200 mm or less from the grip end 11. It is preferable that the protruding portion 12b is disposed along the extending direction of the grip portion 12 at a distance of 50 mm or more and 200 mm or less from the grip end 11.

[0017] The protruding portion 12b preferably includes a cylindrical shape extending along the extending direction of the grip portion 12. In the present embodiment, the protruding portion 12b is configured in a cylindrical shape as a whole. Therefore, in the present embodiment, the protruding portion 12b has a uniform diameter along the extending direction of the grip portion 12.

[0018] The protruding portion 12b preferably has a length equal to or greater than the hand width dimension of the hand on the barrel portion 30 side along the extending direction of the grip portion 12. The protruding portion 12b preferably has a length of 50 mm or more and 200 mm or less along the extending direction of the grip portion 12.

[0019] Next, the effects of the bat 1 in Embodiment 1 will be described.

[0020] According to the bat 1 in Embodiment 1, the protruding portion 12b that protrudes outward from the gripping portion 12a in the radial direction of the grip portion 12 is configured to be gripped by the hand on the barrel portion 30 side. For this reason, by making it difficult to grip the hand on the barrel portion 30 side with the protruding portion 12b, the force of the hand on the barrel portion 30 side can be released. By releasing the force of the hand on the barrel portion 30 side, the gripping portion 12a can be firmly gripped with the little finger and ring finger of the hand arranged on the grip end 11 side.

[0021] According to the bat 1 in Embodiment 1, the maximum outer diameter of the protruding portion 12b is 4 mm or more and 20 mm or less larger than the maximum outer diameter of the gripping portion 12a. For this reason, it is possible to suppress the sense of discomfort while improving the feeling of actively moving the hand on the grip end 11 side.

[0022] According to the bat 1 in Embodiment 1, the end portion of the protruding portion 12b on the grip end 11 side is arranged 50 mm or more and 200 mm or less away from the grip end 11 along the gripping portion 12a. When considering the arrangement of the protruding portion 12b based on the data of the hand width sizes of adults and children, it was found that it is preferable that the end portion of the protruding portion 12b on the grip end 11 side is arranged 50 mm or more and 200 mm or less away from the grip end 11 along the gripping portion 12a.

[0023] According to bat 1 in Embodiment 1, the protrusion 12b includes a cylindrical shape extending along the extending direction of the grip portion 12. For this reason, the protrusion 12b can be similarly gripped with the hand on the barrel portion 30 side from any direction in the circumferential direction of the cylindrical shape. In addition to making it difficult to grip with the hand on the barrel portion 30 side by increasing the diameter of the protrusion 12b gripped by the hand on the barrel portion 30 side and making it easier to firmly hold with the hand arranged on the grip end 11 side, the thick portion extends not only to the portion where the hand on the barrel portion 30 side is arranged but also to the portion where the index finger to the middle finger of the hand on the grip end 11 side are arranged, so that it is possible to emphasize more firmly gripping with the ring finger and little finger of the hand on the grip end 11 side.

[0024] (Embodiment 2) Unless otherwise specified, Embodiment 2 has the same configuration and effects as Embodiment 1 described above. Therefore, the same components as those in Embodiment 1 described above are denoted by the same reference numerals, and the description will not be repeated.

[0025] With reference to FIGS. 3 and 4, the configuration of part 100 in Embodiment 2 of the present invention will be described. Part 100 is attached to the grip portion 12 of bat 1. Part 100 may be configured to be detachable from the grip portion 12 of bat 1. Part 100 is preferably softer than the grip portion 12 of bat 1. Bat 1 includes a handle portion 10 including a grip end 11 and a grip portion 12, a taper portion 20 connected to the grip portion 12 of the handle portion 10, and a barrel portion 30 connected to the taper portion 20.

[0026] The component 100 protrudes outward beyond the gripping portion 12a that is gripped by the hand on the grip end 11 side of the grip portion 12 in the radial direction of the grip portion 12. The component 100 is disposed on the barrel portion 30 side rather than the gripping portion 12a. The component 100 is configured to be gripped by the hand on the barrel portion 30 side. In the case of a right-handed batter, the gripping portion 12a is gripped with the left hand, and the component 100 is gripped with the right hand. On the other hand, in the case of a left-handed batter, the gripping portion 12a is gripped with the right hand, and the component 100 is gripped with the left hand.

[0027] It is preferable that the maximum outer diameter of the component 100 is 4 mm or more and 20 mm or less larger than the maximum outer diameter of the gripping portion 12a.

[0028] It is preferable that the end portion on the grip end 11 side of the component 100 is disposed 50 mm or more and 200 mm or less away from the grip end 11 along the gripping portion 12a.

[0029] The component 100 preferably includes a cylindrical shape extending along the extending direction of the grip portion 12. In the present embodiment, the component 100 is configured as a cylindrical shape as a whole. A hole 100a penetrating the cylindrical shape in the axial direction of the cylindrical shape is provided. The grip portion 12 is inserted into the hole 100a. Further, the component 100 may be configured to have a structure that easily wraps around the grip portion 12. For example, the component 100 is configured to be openable and closable. With the component 100 open, the grip portion 12 is inserted inside the component 100. When the component 100 is closed with the grip portion 12 inserted inside the component 100, the component 100 wraps around the grip portion 12.

[0030] Next, the operation and effect of the component 100 in Embodiment 2 will be described.

[0031] In Embodiment 2, the part 100 projects outward from the gripping part 12a in the radial direction of the grip part 12 and is configured to be gripped by the hand on the barrel part 30 side. Therefore, by making it difficult to grip the hand on the barrel part 30 side with the part 100, the force of the hand on the barrel part 30 side can be released. By releasing the force of the hand on the barrel part 30 side, the gripping part 12a can be firmly gripped with the little finger and ring finger of the hand on the grip end 11 side.

[0032] The maximum outer diameter of the part 100 in Embodiment 1 is 4 mm or more and 20 mm or less larger than the maximum outer diameter of the gripping part 12a. Therefore, while improving the feeling of actively moving the hand on the grip end 11 side, a sense of discomfort can be suppressed.

[0033] The end of the part 100 on the grip end 11 side in Embodiment 1 is arranged 50 mm or more and 200 mm or less away from the grip end 11 along the gripping part 12a. When considering the arrangement of the part 100 based on the data of the hand width sizes of adults and children, it is preferable that the end of the part 100 on the grip end 11 side is arranged 50 mm or more and 200 mm or less away from the grip end 11 along the gripping part 12a.

[0034] The part 100 in Embodiment 1 includes a cylindrical shape extending along the extending direction of the grip part 12. Therefore, the part 100 can be similarly gripped with the hand on the barrel part side from any direction in the circumferential direction of the cylindrical shape.

[0035] (Embodiment 3) Unless otherwise specified, Embodiment 3 has the same configuration and effects as Embodiments 1 and 2 described above. Therefore, the same components as those in Embodiments 1 and 2 described above are denoted by the same reference numerals, and the description will not be repeated.

[0036] Referring to Fig. 5, the protrusion 12b in Embodiment 3 includes an inclined portion SP that inclines toward the center of the grip portion 12 along the extending direction of the grip portion 12. The inclined portions SP are provided at both ends of the protrusion 12b along the extending direction of the grip portion 12. The central portion of the protrusion 12b sandwiched between the inclined portions SP is configured in a cylindrical shape. Further, the part 100 in Embodiment 3 includes an inclined portion SP that inclines toward the center of the grip portion 12 along the extending direction of the grip portion 12. The inclined portions SP are provided at both ends of the part 100 along the extending direction of the grip portion 12. The central portion of the part 100 sandwiched between the inclined portions SP is configured in a cylindrical shape.

[0037] Referring to Fig. 6, in the protrusion 12b or the part 100 in Modification 1 of Embodiment 3, the inclined portion SP inclines toward the center of the grip portion 12 from the center of the protrusion 12b or the part 100 toward both ends along the extending direction of the grip portion 12.

[0038] Referring to Fig. 7, in the protrusion 12b or the part 100 in Modification 2 of Embodiment 3, the inclined portion SP inclines so as to approach the center of the grip portion 12 as it approaches the grip end 11.

[0039] Referring to Fig. 8, in the protrusion 12b or the part 100 in Modification 3 of Embodiment 3, the inclined portion SP inclines so as to approach the center of the grip portion 12 as it moves away from the grip end 11.

[0040] Referring to Fig. 9, in the protrusion 12b or the part 100 in Modification 4 of Embodiment 3, a corrugated concavo-convex portion BP is provided at the central portion of the protrusion 12b or the part 100 sandwiched between the inclined portions SP.

[0041] Next, the effects of Embodiment 3 will be described.

[0042] According to the bat 1 in Embodiment 3, the protrusion 12b includes an inclined portion SP that inclines toward the center of the grip portion 12 along the extending direction of the grip portion 12. Therefore, the inclined portion SP can thicken the portion corresponding to the finger where it is desired to relieve the hand force on the barrel portion 30 side.

[0043] The part 100 in Embodiment 3 includes an inclined portion SP that inclines toward the center of the grip portion 12 along the extending direction of the grip portion 12. Therefore, the inclined portion SP can thicken the portion corresponding to the finger where it is desired to relieve the hand force on the barrel portion 30 side.

[0044] Also, since the inclined portion SP is provided at both ends of the protrusion 12b or the part 100, it is possible to make it easier to grip by applying the fingers of the hand on the barrel portion 30 side to the inclined portion SP.

[0045] Also, the uneven portion BP can make the hand on the barrel portion 30 side less slippery.

Example

[0046] A sensory test when hitting a ball with a bat to which a part is attached will be described.

[0047] The subjects are 4 experienced baseball players (all right-handed batters). Tee hitting was performed with 7 types of softball bats having different grip portion structures. The base bat is a Mizuno softball bat X (83 cm, 680 g, grip portion diameter 22 mm). The parts were attached in the region from 100 mm to 200 mm from the upper end (head side) of the grip end. The width of the increase in thickness due to the parts is 7 levels of 0 mm (no increase), 4 mm, 8 mm, 12 mm, 16 mm, 20 mm, and 24 mm. Measurements were taken in different orders for each subject so as not to be affected by the order effect.

[0048] As an evaluation method, the subject performed a subjective evaluation on the following two items for each bat. The score is the average of two evaluations for each bat. The sense of discomfort is the sense of discomfort in the grip part as a bat. "Very uncomfortable" was rated 1 point, "somewhat uncomfortable" was rated 2 points, "neither" was rated 3 points, "almost no discomfort" was rated 4 points, and "absolutely no discomfort" was rated 5 points. The sense of initiative is the feeling that the hand on the grip end side is active. "None at all" was rated 1 point, "not much" was rated 2 points, "neither" was rated 3 points, "somewhat" was rated 4 points, and "very much" was rated 5 points. The comprehensive evaluation is the total score of the sense of discomfort and the sense of initiative.

[0049] Figure 10 shows the relationship between the comprehensive evaluation and the increase width of the thickness. As shown in Figure 10, the comprehensive evaluation increased significantly when the increase width of the thickness was 4 mm, and decreased rapidly when it exceeded 20 mm. Therefore, the comprehensive evaluation was high when the increase width of the thickness was 4 mm or more and 20 mm or less. As a result, it was possible to suppress the sense of discomfort while improving the feeling of actively moving the hand on the grip end side when the increase width of the thickness was 4 mm or more and 20 mm or less.

[0050] The embodiments and examples disclosed herein should be considered illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the claims.

Explanation of Reference Numerals

[0051] 1 bat, 10 handle part, 11 grip end, 12 grip part, 12a gripping part, 12b protrusion, 20 taper part, 30 barrel part, 100 parts, SP inclined part.

Claims

1. A handle portion including a grip end and a grip portion, a tapered portion connected to the grip portion of the handle portion, and a barrel portion connected to the tapered portion, wherein the grip portion includes a gripping portion gripped by a hand on the grip end side and a protrusion protruding outward from the gripping portion in the radial direction of the grip portion, the protrusion is disposed on the barrel portion side rather than the gripping portion and is configured to be gripped by a hand on the barrel portion side, the protrusion has a length equal to or greater than the dimension of the hand width of the hand on the barrel portion side along the extending direction of the grip portion, and has a length of 50 mm or more and 200 mm or less along the extending direction of the grip portion, a bat.

2. The bat according to claim 1, wherein the maximum outer diameter of the protrusion is 4 mm or more and 20 mm or less larger than the maximum outer diameter of the gripping portion.

3. The bat according to claim 1, wherein an end portion of the protrusion on the grip end side is disposed 50 mm or more and 200 mm or less away from the grip end along the gripping portion.

4. The bat according to claim 1, wherein the protrusion includes a cylindrical shape extending along the extending direction of the grip portion.

5. The bat according to claim 1, wherein the protrusion includes an inclined portion inclined toward the center of the grip portion along the extending direction of the grip portion.

6. A part attached to the grip portion of a bat including a handle portion including a grip end and a grip portion, a tapered portion connected to the grip portion of the handle portion, and a barrel portion connected to the tapered portion, wherein the part protrudes outward beyond a gripping portion gripped by a hand on the grip end side of the grip portion in the radial direction of the grip portion, is disposed on the barrel portion side rather than the gripping portion, and is configured to be gripped by a hand on the barrel portion side, has a length equal to or greater than the dimension of the hand width of the hand on the barrel portion side along the extending direction of the grip portion, and has a length of 50 mm or more and 200 mm or less along the extending direction of the grip portion, a part.

7. The part according to claim 6, wherein the maximum outer diameter of the part is 4 mm or more and 20 mm or less larger than the maximum outer diameter of the gripping portion.

8. The end portion of the part on the grip end side is arranged at a distance of 50 mm or more and 200 mm or less from the grip end along the gripping portion, the part according to claim 6.

9. The part includes a cylindrical shape extending along the extending direction of the grip portion, the part according to claim 6.

10. The part includes an inclined portion inclined toward the center of the grip portion along the extending direction of the grip portion, the part according to claim 6.

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