Paddle gripping aid

Abstract

This invention provides a paddle gripping aid that increases the range of motion of the user's arm during the paddling process. [Solution] The gripping aid of the present invention is a gripping aid for a paddle that is attached to the shaft of a paddle, and comprises a projection that is held between the first and second fingers of the user when the user of the paddle grips the shaft, and a mounting portion for attaching the projection to the shaft such that the projection protrudes from the shaft. The projection protrudes from the outer circumferential surface of the mounting portion, and when the mounting portion is attached to the shaft, the inner circumferential surface of the mounting portion is in contact with the outer circumferential surface of the shaft and is configured to cover at least a portion of the shaft in the circumferential direction.

Description

【Technical Field】 【0001】 The present invention relates to a gripping assist device for a paddle that assists in gripping the paddle. 【Background Art】 【0002】 Conventionally, as a paddle used in a canoe, for example, there has been proposed one including a shaft for rowing operation and a water scooping part provided on at least one end side of the shaft, and the water scooping part is formed in a substantially triangular shape with a flat water scooping surface narrowed on the shaft side and widened on the tip side (see, for example, Patent Document 1). The user holds and operates the shaft of the paddle with both hands. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2001-151196 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 The canoe can obtain a greater propulsive force by rowing the paddle with a larger range of motion of the user's arm. However, there are individual differences in the range of motion of the arm. Also, it is quite difficult to consciously widen the range of motion of the arm. 【0005】 In view of such circumstances, the present invention aims to provide a gripping assist device for a paddle that enlarges the range of motion of the user's arm during the process of rowing the paddle. 【Means for Solving the Problems】 【0006】 The present invention relates to a paddle gripping aid that is attached to the shaft of a paddle, and is characterized by comprising: a projection that is held between the first and second fingers of the user when the user of the paddle grips the shaft; and a mounting portion that attaches the projection to the shaft such that the projection protrudes from the shaft. 【0007】 The present invention provides a gripping aid for a paddle, wherein the direction parallel to the axial direction of the shaft in the projection is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection, and when the projection is viewed from the height direction in a state where it is held between the first finger and the second finger, the length in the depth direction from the end of the projection in the depth direction that is close to the webbing between the first finger and the second finger to the position in the width direction where the projection has its maximum width is in the range of 10 to 30 (mm), and the maximum width of the projection is in the range of 10 to 30 (mm). 【0008】 In the gripping aid for a paddle of the present invention, when the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection, the projection has a first region to which the first finger makes contact and a second region to which the second finger makes contact when the projection is gripped from both sides in the width direction by the first finger and the second finger, and in at least a part of the section in the depth direction from the end of the projection in the depth direction that is close to the webbing between the first finger and the second finger to the position in the width direction where the projection has its maximum width, the first region and the second region are inclined with respect to the depth direction such that the width of the projection in the width direction is smaller in the depth direction closer to the end than in the depth direction further away. 【0009】 In the gripping aid for a paddle of the present invention, the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection. When the projection is viewed from the depth direction while being held between the first finger and the second finger, the projection has a first region facing the first finger side and a second region facing the second finger side, and the first region and the second region are inclined with respect to the height direction in at least a portion of the section of the projection along the height direction such that the width of the projection is smaller near the base of the projection than near the distal end in the height direction. 【0010】 In the gripping aid for a paddle of the present invention, the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection. When viewing the paddle and the projection from the axial direction of the shaft, a first region where the first imaginary line is located and a second region opposite to the first region are defined with a second imaginary line parallel to the central axis of the shaft and parallel to the first imaginary line connecting both ends of the paddle blade in the direction parallel to the depth direction as the boundary, the ends of the projection in the depth direction are located in the second region. 【0011】 In the gripping aid for a paddle of the present invention, when the paddle and the projection are viewed from the axial direction of the shaft, both ends of the projection in the depth direction are located in a first circumferential range in the circumferential direction centered on the central axis of the shaft, and the first circumferential range is a circumferential range in the second region that is 30 degrees or more and 150 degrees or less with respect to the second imaginary line with respect to the central axis of the shaft. 【0012】 The present invention relates to a paddle gripping aid, wherein when the paddle and the projection are viewed from the axial direction of the shaft, one end of the projection in the depth direction is located in a second circumferential range in the circumferential direction centered on the central axis of the shaft, and the other end of the projection in the depth direction is located in a third circumferential range in the circumferential direction centered on the central axis of the shaft, wherein the second circumferential range is a circumferential range in the second region that is 30 degrees or more and 70 degrees or less with respect to the second imaginary line with respect to the central axis of the shaft, and the third circumferential range is a circumferential range in the second region that is 110 degrees or more and 150 degrees or less with respect to the second imaginary line with respect to the central axis of the shaft. 【0013】 The present invention relates to a gripping aid for a paddle, characterized in that the projection protrudes from the outer circumferential surface of the mounting portion, and when the mounting portion is attached to the shaft, the inner circumferential surface of the mounting portion contacts the outer circumferential surface of the shaft and covers at least a portion of the shaft in the circumferential direction. [Effects of the Invention] 【0014】 The paddle gripping aid of the present invention has the excellent effect of increasing the range of motion of the user's arm during the paddling operation. [Brief explanation of the drawing] 【0015】 [Figure 1] This is a perspective view of a paddle fitted with a gripping aid for the paddle according to an embodiment of the present invention. [Figure 2] (A) is an enlarged view of a paddle with the paddle gripping aid of this embodiment attached. (B) is an enlarged view of a modified version of the paddle gripping aid of this embodiment attached to a paddle. [Figure 3](A) and (B) are cross-sectional views (cut from a direction perpendicular to the axis of the paddle shaft) showing in chronological order how the paddle gripping aid of this embodiment is attached to the paddle. (C) is a cross-sectional view of a modified example of the paddle gripping aid of this embodiment attached to the paddle, cut from a direction perpendicular to the axis of the paddle shaft. (D) is a cross-sectional view of another modified example of the paddle gripping aid of this embodiment attached to the paddle, cut from a direction perpendicular to the axis of the paddle shaft. [Figure 4] This is a view of a paddle equipped with the paddle gripping aid of this embodiment, held by the user, as seen from above the projection of the paddle gripping aid in the height direction. [Figure 5] (A) and (B) are diagrams showing a paddle fitted with a modified version of the paddle gripping aid of this embodiment, held by a user, viewed from above the projection of the paddle gripping aid in the height direction. [Figure 6] (A) is a view of a paddle fitted with the paddle gripping aid of this embodiment, held by a user, as seen from the depth direction of the projection of the paddle gripping aid. (B) is a view of a paddle fitted with a modified version of the paddle gripping aid of this embodiment, held by a user, as seen from the depth direction of the projection of the paddle gripping aid. [Figure 7] This is a diagram of a paddle with a gripping aid attached, viewed from the axial direction of the paddle shaft. [Modes for carrying out the invention] 【0016】 Embodiments of the present invention will be described below with reference to the accompanying drawings. The accompanying drawings are examples of embodiments of the invention, and parts with the same reference numerals in the drawings represent the same object. Furthermore, the shapes and dimensional ratios of the parts in each drawing are not necessarily accurate. 【0017】 <Overall Structure> The paddle gripping assist device 1 in the embodiment of the present invention assists the user in gripping the shaft 110 of the paddle 100. The paddle 100 is used, for example, in a small boat such as a canoe, and has blades 120 at both ends of the shaft 110. The blades 120 at both ends may or may not have an angular difference in the circumferential direction of the central axis 112 of the shaft 110. Also, the shape of the blade 120 in FIG. 1 is an example, and other shapes may be used. Note that the paddle gripping assist device 1 can also be applied to a paddle of a type having a blade 120 at one end of the shaft 110. 【0018】 As shown in FIG. 1, the paddle gripping assist device 1 is attached to the shaft 110. Specifically, the paddle gripping assist device 1 is attached at the position where the user of the paddle 100 grips the paddle 100. The paddle gripping assist device 1 in the present embodiment has an attachment portion 2 and a protrusion portion 3. 【0019】 <Attachment portion> Referring to FIG. 2, the attachment portion 2 will be described. The attachment portion 2 is attached to the shaft 110. When the attachment portion 2 is attached to the shaft 110, the attachment portion 2 is configured to cover at least a part of the circumferential direction of the shaft 110 while the inner peripheral surface of the attachment portion 2 contacts the outer peripheral surface of the shaft 110. Then, the attachment portion 2 presses the shaft 110 inward in the radial direction of the shaft 110 by an elastic force. The attachment portion 2 does not rotate relative to the shaft 110 unless an external force greater than or equal to a predetermined value along the circumferential direction of the shaft 110 is applied to the attachment portion 2. 【0020】 Specifically, the attachment portion 2 has, for example, a member having an annular shape with an open cross-section as shown in FIG. 3(B). The open annular shape corresponds to the shape of the cross-section of the shaft 110. When the cross-section of the shaft 110 is circular, the open annular shape is, for example, a C shape, and the above-mentioned member of the attachment portion 2 is constituted by a C-shaped member 20. Hereinafter, the case where the above-mentioned member is constituted by the C-shaped member 20 will be described as an example. 【0021】 The C-shaped member 20 is configured to be elastically deformable. When attaching the C-shaped member 20 to the shaft 110, as shown in Figure 3(A), an external force is applied to spread the C-shaped member 20 so that both ends 21A and 21B of the C-shaped member 20 separate from each other. Then, the shaft 110 is inserted into the surrounding region S of the C-shaped member 20 from the area between the ends 21A and 21B of the C-shaped member 20. When the external force is released, the C-shaped member 20 returns to its original shape due to the restoring force caused by the elastic deformation, and its inner circumferential surface contacts the shaft 110, pressing against it. As a result, the shaft 110 is fitted into the inner circumferential side of the C-shaped member 20, and the attachment of the C-shaped member 20 to the shaft 110 is completed. 【0022】 The mounting portion 2 is not limited to the above configuration, and may be composed of a closed annular member (not shown) whose cross-section extends around the entire circumference of the shaft 110. 【0023】 Then, an external force greater than a predetermined amount is applied to the mounting part 2 along the circumferential direction of the shaft 110, causing the mounting part 2 to rotate relative to the shaft 110, thereby positioning the mounting part 2. Once the positioning of the mounting part 2 is complete, it is preferable to fix the mounting part 2 to the shaft 110. 【0024】 To fix the mounting portion 2 to the shaft 110, the mounting portion 2 may be fixed to the shaft 110 using a fixing member such as tape, or the mounting portion 2 may be fixed by providing a fixing mechanism 22 as described below. 【0025】 As shown in Figure 3(C), the fixing mechanism 22 includes, for example, a first protruding piece 220 that is continuous with one circumferential end of the C-shaped member 20 and protrudes from that end, a second protruding piece 222 that is continuous with the other circumferential end of the C-shaped member 20 and protrudes from that end, and a fixing member 224. 【0026】 The first protruding piece 220 and the second protruding piece 222 face each other while protruding in a direction away from the surrounding area S enclosed by the C-shaped member 20. The fixing member 224 engages with the first protruding piece 220 and the second protruding piece 222, and by bringing the first protruding piece 220 and the second protruding piece 222 closer together in the direction in which they face each other, the fixing member 224 strengthens the pressing force on the shaft 110 by the C-shaped member 20, thereby firmly restricting the relative movement of the mounting portion 2 with respect to the shaft 110. 【0027】 The fixing member 224 is composed of, for example, a screw 224A and a nut 224B. In this case, the screw passes through the holes of the first protruding piece 220 and the second protruding piece 222, and fastens with the nut to fix the C-shaped member 20 to the shaft 110. 【0028】 The embodiments of the fixing member and fixing mechanism 22 are not particularly limited, and all fixing members and fixing mechanisms 22 capable of restricting the relative movement of the mounting portion 2 with respect to the shaft 110 are included within the scope of the present invention. 【0029】 The mounting portion 2 described above is merely an example, and all mounting portions 2 that can be used to attach the projection 3 to the shaft 110 such that the projection 3 protrudes from the shaft 110 are included within the scope of the present invention. The mounting portion 2 may consist of, for example, an adhesive means 24 such as an adhesive or tape (see Figure 3(D)) for bonding the projection 3 to the shaft 110, or it may consist of other fixing mechanisms for fixing the projection 3 to the shaft 110. 【0030】 <Protrusion> The projection 3 will be described with reference to Figures 2 to 4. As shown in Figures 2 and 3, the projection 3 protrudes from the shaft 110. In this embodiment, the projection 3 protrudes from the outer circumferential surface of the mounting portion 2, but it is not limited to this, and the starting point of the projection 3 may be at other positions depending on the configuration of the mounting portion 2. Furthermore, in this embodiment, when the mounting portion 2 is attached to the shaft 110, the projection 3 protrudes in the radial direction of the shaft 110, but it is not limited to this, and the projection 3 may protrude in other directions as long as it protrudes from the circumferential surface around the axial direction of the shaft 110. 【0031】 Here, as shown in Figures 3 and 4, the direction of projection of the projection 3 (the axial direction of the central axis of the projection 3) is defined as the height direction H of the projection 3, the direction parallel to the axial direction of the shaft 110 is defined as the width direction W of the projection 3, and the direction perpendicular to both the height direction H and the width direction W of the projection 3 is defined as the depth direction D of the projection 3. 【0032】 When the user of the paddle 100 grips the shaft 110, as shown in Figure 4, the user places the pads of their fingers in contact with the mounting portion 2 and the shaft 110, and grips the projection 3 between the user's fingers (first finger) 920 and (second finger) 922 in the width direction W of the projection 3. Preferably, the two adjacent fingers (finger 920, finger 922) that the user grips the projection 3 are the middle finger and ring finger. This is because widening the distance between the ring finger and middle finger connects the fascia on the little finger side to the trunk, increasing the range of motion of the arm. A wider range of motion of the arm allows for a wider range of movement of the paddle, thus improving the propulsion force of small boats such as canoes. 【0033】 When the projection 3 is pinched by two adjacent fingers 920 and 922, for example, as shown in Figure 4, it has a first region 30 that contacts one of the adjacent fingers 920 and a second region 32 that contacts the other adjacent finger 922. 【0034】 Here, we focus on the interdigital web 924 formed between two adjacent fingers 920 and 922, specifically the section E along the depth direction D of the projection 3, from the proximal end 3A of the projection 3 to the maximum width portion 34. Incidentally, the maximum width portion 34 refers to the part where the width of the projection 3 is maximum in the width direction W when the projection 3 is viewed from above in the height direction H of the projection 3. 【0035】 In section E, it is preferable that the first region 30 and the second region 32 have inclined portions that are inclined with respect to the depth direction D such that the width of the projection 3 is smaller on the side closer to the end 3A of the projection 3 than on the side further away in the depth direction D of the projection 3. Here, the inclined portion of the first region 30 is defined as the first inclined portion 30A, the inclined portion of the second region 32 is defined as the second inclined portion 32A, the end of the first inclined portion 30A and the second inclined portion 32A closer to the end 3A is defined as the first end, and the end of the second inclined portion 32A closer to the maximum width portion 34 is defined as the second end. When the projection 3 is viewed in plan from the height direction H of the projection 3, the first inclined portion 30A is inclined such that the side further away from the end 3A of the first inclined portion 30A is closer to the end 2A of the mounting portion 2 in the width direction than the side closer to the end 3A is defined as the first end of the mounting portion 2 in the width direction, with reference to one end 2A of the mounting portion 2 in the width direction that is closer to the first inclined portion 30A. Furthermore, using the other end 2B in the width direction of the mounting portion 2 that is proximal to the second inclined portion 32A as a reference, the second inclined portion 32A is inclined such that the side distal to the end 3A of the second inclined portion 32A is proximal to the other end 2B in the width direction of the mounting portion 2 than the proximal side. Note that the width direction of the mounting portion 2 refers to the direction parallel to the axial direction of the shaft 110 when the mounting portion 2 is attached to the shaft 110. 【0036】 Furthermore, it is preferable that the inclination angles of the first inclined portion 30A and the second inclined portion 32A with respect to the depth direction D are the same. Since each of the two fingers 920 and 922 spreads out from the base of each finger, if the first region 30 and the second region 32 are inclined as described above, no burden will be placed on the two fingers 920 and 922. 【0037】 Furthermore, in section F, from the end of section E (maximum width section 34) to the end 3B of the projection 3 opposite to end 3A, the two adjacent fingers 920 and 922 do not come into contact with the projection 3, so their shape can be anything (see Figure 5(A)). Also, as shown in Figure 5(B), section F may be omitted. 【0038】 The length of the above section E in the depth direction D is preferably within the range of 10 to 30 mm, and more preferably within the range of 10 to 20 mm, taking into account the length of the user's fingers. Furthermore, the length of the maximum width portion 34 (maximum width of the projection portion 3) is preferably within the range of 10 to 30 mm, and more preferably within the range of 15 to 20 mm. 【0039】 Furthermore, as shown in Figure 6(A), when viewing the projection 3 from the depth direction D, in all or part of the section G along the height direction H of the projection 3 from the base of the projection 3 (outer surface of the mounting portion 2) to the uppermost part 3C of the projection 3, the projection 3 has a pair of inclined portions 35, 36 that are inclined with respect to the height direction H such that the width of the projection 3 is greater on the side closer to the uppermost part 3C of the projection 3 than on the side further away. The inclined portion 35 is inclined with respect to one end 2A in the width direction of the mounting portion 2 that is closer to the inclined portion 35 than the side closer to the uppermost part 3C of the inclined portion 35. The inclined portion 36 is inclined such that the side distal to the uppermost part 3C of the inclined portion 36 is closer to the other end 2B in the width direction of the mounting portion 2, relative to the other end 2B in the width direction of the mounting portion 2 that is closer to the inclined portion 36, than the side that is closer to the other end 2B in the width direction of the mounting portion 2. Preferably, the inclination angles of the inclined portions 35 and 36 with respect to the height direction H are the same. 【0040】 As shown in Figure 2(A), examples of the shape of the projection 3 can be a hemispherical or semi-ellipsoidal shape, but are not limited to these. For example, as shown in Figure 2(B), examples of the shape of the projection 3 can be an elliptical cylinder or a cylindrical shape. 【0041】 As shown in Figure 6(B), stoppers 4A and 4B may be provided that protrude from the uppermost part 3C of the projection 3 or its vicinity on both sides in the width direction W of the projection 3. A finger 920, etc., fits in the area R1 surrounded by stopper 4A, projection 3, and mounting part 2, and a finger 922, etc., fits in the area R2 surrounded by stopper 4B, projection 3, and mounting part 2. The stoppers 4A and 4B prevent the fingers 920, 922 from coming off the paddle gripping aid 1. 【0042】 <Extension range of the protrusion> Referring to Figure 7, the extent of the projection 3 in the circumferential direction of the shaft 110 will be explained. Figure 7 shows the paddle 100 with the paddle gripping aid 1 of this embodiment attached, as viewed from the axial direction of the shaft 110. Note that the blade 120 and paddle gripping aid 1 on the front side of the paddle 100, as viewed from the axial direction of the shaft 110, are shown, but the blade 120 and paddle gripping aid 1 on the rear side are omitted from the illustration. 【0043】 Here, when viewed from the axial direction of the shaft 110, a first region Q1 is defined where the virtual dotted line 126 is located, and a second region Q2 is defined on the opposite side of the first region Q1, with the virtual dotted line 130 being parallel to the virtual dotted line 126 (first virtual dotted line) 126 that connects both ends of the front blade 120 of the paddle 100 in a direction parallel to the depth direction D of the projection 3, and passing through the central axis 112 of the shaft 110. The water-scraping side of the blade 120 is defined as the surface 121A. When viewing the paddle 100 and projection 3 from the axial direction of the shaft 110, the projection 3 is located on the opposite side 121B of the blade 120, opposite to the surface 121A. Therefore, when viewing the paddle 100 and projection 3 from the axial direction of the shaft 110, one end 37 and the other end 38 of the projection 3 in the depth direction D are located in the second region Q2. In other words, it is preferable that the projection 3 is located in the circumferential range on the second region Q2 side in the circumferential direction centered on the central axis 112 of the shaft 110 (hereinafter referred to as the second region side circumferential range). 【0044】 Furthermore, it is preferable that one end 37 and the other end 38 of the projection 3 in the depth direction D are located within the circumferential range on the second region side, particularly within a circumferential range (hereinafter referred to as the first circumferential range) of 30 degrees or more and 150 degrees or less with respect to the virtual dotted line (second virtual dotted line) 130 centered on the central axis 112 of the shaft 110. In Figure 7, the first circumferential range corresponds to the combined circumferential range of P2, P4, and P3. If one end 37 and the other end 38 of the projection 3 in the depth direction D are located within the first circumferential range, the length of the projection 3 in the depth direction D becomes easy for the user to use. 【0045】 Furthermore, it is preferable that one end 37 of the projection 3 in the depth direction D is located within the second region's circumferential range, specifically within a circumferential range P2 (hereinafter referred to as the second circumferential range) that is 30 degrees or more and 70 degrees or less with respect to the virtual dotted line (second virtual dotted line) 130 centered on the central axis 112 of the shaft 110. The second circumferential range P2 corresponds to the circumferential range P2 in Figure 7. If one end 37 of the projection 3 in the depth direction D is located within the second circumferential range, the length of the projection 3 in the depth direction D becomes more user-friendly. 【0046】 Furthermore, it is preferable that the other end 38 of the projection 3 in the depth direction D is located within the circumferential range on the second region side, particularly within the circumferential range P3 (hereinafter referred to as the third circumferential range) which is 110 degrees or more and 150 degrees or less with respect to the virtual dotted line (second virtual dotted line) 130 centered on the central axis 112 of the shaft 110. The third circumferential range P3 corresponds to the circumferential range P3 in Figure 7. If the other end 38 of the projection 3 in the depth direction D is located within the third circumferential range, the length of the projection 3 in the depth direction D becomes easy for the user to use. 【0047】 In Figure 7, the virtual orthogonal dotted line 132 is a dotted line that passes through the central axis 112 of the shaft 110 and is perpendicular to the virtual dotted line 130. The virtual dotted line 134 passes through the central axis 112 of the shaft 110 and is inclined 30 degrees relative to the virtual dotted line 130 and -60 degrees relative to the virtual orthogonal dotted line 132 on the side closer to one end 122 of the blade 120 than the virtual orthogonal dotted line 132. The virtual dotted line 136 passes through the central axis 112 of the shaft 110 and is inclined 150 degrees relative to the virtual dotted line 130 and 60 degrees relative to the virtual orthogonal dotted line 132 on the side closer to the other end 124 of the blade 120 than the virtual orthogonal dotted line 132. Furthermore, the virtual dotted line 138 passes through the central axis 112 of the shaft 110, and is inclined 70 degrees with respect to the virtual dotted line 130 on the side closer to one end 122 of the blade 120 than the virtual orthogonal dotted line 132, while being inclined -20 degrees with respect to the virtual orthogonal dotted line 132. The virtual dotted line 140 passes through the central axis 112 of the shaft 110, and is inclined 110 degrees with respect to the virtual dotted line 130 on the side closer to the other end 124 of the blade 120 than the virtual orthogonal dotted line 132, while being inclined 20 degrees with respect to the virtual orthogonal dotted line 132. 【0048】 In Figure 7, the fourth circumferential range P4 between virtual dotted lines 138 and 140, the fifth circumferential range P5 between virtual dotted lines 130 and 134, and the sixth circumferential range P6 between virtual dotted lines 130 and 136 are circumferential ranges where the ends 37 and 38 of the projection 3 do not need to be located. In the fourth circumferential range P4, the length D in the depth direction of the projection 3 may be too small, which may make it difficult for the user to use. In the fifth circumferential range P5 and the sixth circumferential range P6, the spread of the projection 3 may be too large, which may make it difficult for the user to use. 【0049】 The fourth circumferential range P4 is the circumferential range in the second region Q2 that is greater than 70 degrees and less than 110 degrees relative to the virtual dotted line 130, centered on the central axis 112 of the shaft 110. The fifth circumferential range P5 is the circumferential range in the second region Q2 that is greater than or equal to 0 degrees and less than 30 degrees relative to the virtual dotted line 130, centered on the central axis 112 of the shaft 110. The sixth circumferential range P6 is the circumferential range in the second region Q2 that is greater than 150 degrees and less than or equal to 180 degrees relative to the virtual dotted line 130, centered on the central axis 112 of the shaft 110. 【0050】 Furthermore, the above description can also be applied to the blade 120 on the far side of the paddle 100 and the paddle gripping aid 1 when viewed from the axial direction of the shaft 110. Moreover, the shape and positional relationship of the shaft 110 and the blade 120 of the paddle 100 as shown in Figure 7 when viewed from the axial direction of the shaft 110 is just one example, and the above description can of course be applied to other configurations as well. 【0051】 Furthermore, the gripping aid for paddles of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention. [Explanation of Symbols] 【0052】 1. Grip aid for paddles 2 Mounting part 3 Protrusion 4A, 4B Stopper 20 C-type member 22 Fixing mechanism 30 First area 30A First slope part 32 Second area 32A Second slope part 34 Maximum width part 35,36 Slope 37 One end of the projection 38 Other end of the projection 100 paddles 110 shaft 112 Shaft central axis 120 blades 122 One end of the blade 124 The other end of the blade 126,130,138,140 Virtual dotted line 132 Virtual orthogonal dotted lines 134,136 Virtual bisector dotted line 220 First protruding piece 222 Second protruding piece 224 Fixing member 920,922 fingers

Claims

[Claim 1] A paddle gripping aid that attaches to the paddle shaft, When the user of the paddle grips the shaft, a projection is inserted between the user's first and second fingers, A mounting portion for attaching the projection to the shaft such that the projection protrudes from the shaft, A feature comprising: A gripping aid for paddles. [Claim 2] In the aforementioned projection, the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection. When viewing the projection from the height direction while it is being held between the first finger and the second finger, The length in the depth direction from the end of the projection in the depth direction, which is close to the interdigital web between the first finger and the second finger, to the position in the width direction where the projection has its maximum width, is within the range of 10 to 30 (mm). The maximum width of the aforementioned projection is characterized to be within the range of 10 to 30 mm. The gripping aid for a paddle according to claim 1. [Claim 3] When the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection, The projection has a first region that the first finger contacts and a second region that the second finger contacts when the projection is gripped by the first finger and the second finger from both sides in the width direction. In at least a portion of the section in the depth direction from the end of the projection in the depth direction, which is close to the interdigital web between the first finger and the second finger, to the position in the width direction where the projection has its maximum width, The first region and the second region are characterized in that they are inclined with respect to the depth direction such that the width of the projection in the width direction is smaller at the end proximal to the end in the depth direction than at the end proximal to the end. The gripping aid for a paddle according to claim 1. [Claim 4] In the aforementioned projection, the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection. When viewing the projection from the depth direction while it is being held between the first finger and the second finger, The projection has a first region facing the first finger side and a second region facing the second finger side. The first region and the second region are characterized in that, in at least a portion of the section of the projection along the height direction, they are inclined with respect to the height direction such that the width of the projection is smaller near the base of the projection than it is distal to the base of the projection. The gripping aid for a paddle according to claim 1. [Claim 5] In the aforementioned projection, the direction parallel to the axial direction of the shaft is defined as the width direction of the projection, the direction in which the projection protrudes is defined as the height direction, and the direction perpendicular to both the width direction and the height direction is defined as the depth direction of the projection. When viewing the paddle and the projection from the axial direction of the shaft, if a first imaginary line is defined as the boundary between the first imaginary line and a second imaginary line that is parallel to the first imaginary line connecting both ends of the paddle blade in a direction parallel to the depth direction and passes through the central axis of the shaft, then, The ends of the projection in the depth direction are located in the second region, The gripping aid for a paddle according to claim 1. [Claim 6] When viewing the paddle and the projection from the axial direction of the shaft, The ends of the projection in the depth direction are located in the first circumferential range in the circumferential direction with respect to the central axis of the shaft, The first circumferential range is characterized in that, in the second region, it is a circumferential range of 30 degrees or more and 150 degrees or less with respect to the second imaginary line, with respect to the central axis of the shaft. The gripping aid for a paddle according to claim 5. [Claim 7] When viewing the paddle and the projection from the axial direction of the shaft, One end of the projection in the depth direction is located in a second circumferential range in the circumferential direction with respect to the central axis of the shaft. The other end of the projection in the depth direction is located in a third circumferential range in the circumferential direction with respect to the central axis of the shaft. The aforementioned second circumferential range is a circumferential range in the second region that is 30 degrees or more and 70 degrees or less with respect to the second imaginary line, with respect to the central axis of the shaft. The third circumferential range is characterized in that, in the second region, it is a circumferential range of 110 degrees or more and 150 degrees or less with respect to the second imaginary line, with respect to the central axis of the shaft. The gripping aid for a paddle according to claim 6. [Claim 8] The aforementioned projection protrudes from the outer circumferential surface of the mounting portion, The mounting portion is characterized in that, when attached to the shaft, its inner circumferential surface contacts the outer circumferential surface of the shaft while covering at least a portion of the shaft in the circumferential direction. The gripping aid for a paddle according to claim 1.

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