Skipping ropes and rope grips

Abstract

To provide a skipping rope grip to which a rope is attached using a cap, which more reliably prevents the cap from coming off.SOLUTION: A grip 100 includes a cap 110 that accommodates an end of a rope inserted from the front end so that the end does not come off, a body 140 that is arranged on a rear end side of the cap 100, a shaft 160 that has an insertion portion partially penetrating the body 140 and configured to inhibit axial misalignment with the body 140, and a flange 164 provided on the rear end side, and a ring 150 made of elastomer. and have. The body 140 is sandwiched between a rear end face of the cap 110 and a tip face of the flange 164 through the ring 150 by screwing a male thread formed at a tip of the insertion portion into a female thread 119 formed at a rear end of the cap 110.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a skipping rope grip used for skipping ropes, and more particularly to the structure of a skipping rope grip. [Background technology]

[0002] In skipping ropes, in order to make it easier to adjust the length of the rope, a cap is screwed onto the head of the grip, and an eyelet or rotor attached to the rope is engaged in a hole on the top surface of the cap. However, with this type of skipping rope, the cap rotates due to the rotation of the rope while the rope is being skipped, and there is a risk that the cap may become loose or come off the grip.

[0003] Therefore, various techniques have been proposed to prevent the cap from loosening or coming off in the structure for attaching the cap to the grip. For example, Patent Document 1 describes a technique for a skipping rope grip structure in which a cap is provided on the head side of the grip to which the rope body is rotatably engaged, in which the cap is provided with a screw-on tube that is screwed onto the head of the grip and a rotating crown with a through hole to which the rope body is rotatably engaged, and the rotating crown is rotatably engaged with the screw-on tube. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-265463 Summary of the Invention [Problem to be solved by the invention]

[0005] However, even if the rotating crown is rotatably attached to the screw-on tube as in the technology disclosed in Patent Document 1, it is difficult to prevent the rotation of the rotating crown from being transmitted to the screw-on tube, and it is not easy to adequately prevent the cap from loosening or coming off the grip.

[0006] The present invention has been made to solve the above-mentioned conventional problems, and aims to provide a technology that more reliably prevents a cap from falling off in a skipping rope grip where a rope is attached using a cap. [Means for solving the problem]

[0007] In order to achieve at least part of the above objects, the present invention can be realized in the following forms or application examples.

[0008] [Application example 1] a shaft having a flange provided on the rear end side of the insertion portion; and an annular ring made of elastomer, the shaft having an insertion portion inserted from the rear end side of the cap and partially penetrating the body, the insertion portion being configured to prevent misalignment of the shaft with the body. The grip for a skipping rope is configured so that a male thread formed on the tip of the insertion portion is screwed into a female thread formed on the rear end of the cap, and the body is sandwiched between the rear end surface of the cap and the tip surface of the flange via the ring.

[0009] According to this application example, the body is sandwiched between the cap arranged at the front end side and the flange arranged at the rear end side via the ring made of elastomer, and the misalignment of the axial centers of the body and the shaft is suppressed, so that the cap, body, and shaft are stably fixed. Furthermore, because the cap, body, and shaft are fixed via the ring made of elastomer, even if the male thread formed at the front end of the insertion portion and the female thread formed on the cap begin to loosen, further loosening is suppressed, so that the cap can be sufficiently prevented from falling off when using a jump rope that employs the jump rope grip of this application example.

[0010] [Application example 2] The insertion portion has a threaded portion at the tip end on which the male thread is formed, a guide portion at the rear end that prevents the axis from misaligning with the body, and a shaft portion that is provided between the threaded portion and the guide portion and has an outer diameter smaller than the threaded portion and the guide portion, as described in Application Example 1.

[0011] According to this application example, the weight of the grip itself can be reduced.

[0012] [Application example 3] A skipping rope grip as described in Application Example 2, wherein the insertion portion further has a plurality of partition portions extending outward from the shaft portion and separating the screw portion and the guide portion at equal intervals.

[0013] According to this application example, the movement of the weight that is removably attached to the shaft portion in the axial direction is restricted, so that the attachment position of the weight can be changed to adjust the grip balance according to the user's preference.

[0014] [Application example 4] A skipping rope grip according to application example 3, wherein the screw portion and the partition portion have notches extending inward from the outer periphery.

[0015] According to this application example, it becomes easier to remove the weight attached to the shaft portion.

[0016] [Application example 5] a skipping rope grip as described in any one of Application Examples 1 to 4, further comprising: a ball having a substantially spherical portion and a cylindrical extension portion extending from the spherical portion toward the tip, the ball being housed inside the cap; a plurality of sleeve pieces configured so that the rope can be inserted inside and connected at the tip side; and a stopper having an insertion portion that protrudes from the inside of each of the plurality of sleeve pieces and bites into the rope when an inward load is applied to the sleeve piece, the ball being formed with a bottomed stopper accommodating hole that is formed from the rear end side toward the tip direction and that accommodates the stopper, and a rope introduction hole that is formed from the tip side of the extension toward the rear end and reaches the stopper accommodating hole, the stopper and the stopper accommodating hole being configured so that when the stopper with the rope inserted is inserted into the stopper accommodating hole, an inward load is applied from the stopper accommodating hole to the plurality of sleeve pieces.

[0017] According to this application example, the rope can be easily attached and detached to the stopper and the ball, so that it is easier to adjust the length of the rope and replace the rope that has deteriorated due to use or aging.

[0018] The present invention can be realized in various forms, for example, in the form of a jump rope grip, a jump rope using the jump rope grip, etc. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is an exploded perspective view of the grip according to the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view of the grip taken along a cutting surface along the axis. [Diagram 3] FIG. 2 is an explanatory diagram showing a state in which a rope is attached to the grip of the first embodiment. [Figure 4]FIG. 7 is an exploded perspective view of a grip according to a second embodiment. [Diagram 5] FIG. 2 is a cross-sectional view of the grip taken along a cutting surface along the axis. [Figure 6] 6A to 6D are six views showing the appearance of a grip according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, embodiments of the present invention will be described in the following order. A. First embodiment: A1.Grip configuration: A2. Rope installation: B. Second embodiment: B1.Grip configuration: B2.Grip appearance: C. Variations:

[0021] A. First embodiment: A1.Grip configuration: Fig. 1 is an exploded perspective view of a skipping rope grip 100 (hereinafter, simply referred to as "grip 100") according to a first embodiment, and Fig. 2 is a cross-sectional view of the grip 100 taken along the axis of the grip 100 (shown by a dashed line). Fig. 2(a) shows the entire grip 100, and Fig. 2(b) shows an enlarged view of the tip side of the grip 100. Here, the tip side refers to the side of the grip 100 facing the side where a rope (not shown) is attached (the tip side). On the other hand, the side opposite the tip side (the rear side) is referred to as the rear side.

[0022] 1 and 2, the grip 100 has a cap 110, a ball 120, a stopper 130, a body 140, a ring 150, and a shaft 160. These components 110, 120, 130, 140, 150, and 160 are assembled in this order from the tip side.

[0023] 1 and 2 show a state in which the axis of the grip 100 coincides with the axis of each of the components 110, 120, 130, 140, 150, and 160. In the following, when there is no need to distinguish between the axis of each of the components 110, 120, 130, 140, 150, and 160 and the axis of the grip 100, the axis representing the axis of the grip 100 will be simply referred to as the "axis."

[0024] Of the components 110, 120, 130, 140, 150, and 160 that make up the grip 100, the cap 110, the ball 120, the stopper 130, the body 140, and the shaft 160 are typically made of a thermoplastic resin, while the ring 150 is made of an elastomer such as chloroprene rubber or silicone rubber.

[0025] The materials of the components 110, 120, 130, 140, 150, and 160 can be changed as appropriate as long as the components and functions described below can be realized. For example, the body 140 can be made of wood in consideration of the tactile sensation, since it is held by the user when using the jump rope equipped with the grip 100, as described below. In addition, the cap 110, the ball 120, the body 140, and the shaft 160 can be made at least partially of metal in consideration of strength and weather resistance. Furthermore, as the elastomer forming the ring 150, natural rubber can be used instead of synthetic rubber such as chloroprene rubber or silicone rubber.

[0026] The cap 110 is a member having a substantially cylindrical surrounding portion 111. The outer diameter and inner diameter of the surrounding portion 111 are set to be slightly smaller than the outer diameter and inner diameter (described later) of the body 140, respectively. Note that the outer diameter of the surrounding portion 111 does not necessarily have to be smaller than the outer diameter of the body 140, and it is also possible for the outer diameter of the surrounding portion 111 to be larger than the outer diameter of the body 140.

[0027] An annular narrowed portion 112 is provided on the inner surface of the outer casing 111, protruding inward from the tip end portion thereof and narrowing the inside of the outer casing 111, and a female thread 119 is formed on the rear end portion. In addition, as shown in Fig. 2, a recess 118 is provided on the tip end side of the outer casing 111 and narrowed portion 112, which is recessed toward the rear end.

[0028] Ball 120 has a substantially spherical portion 121 and a cylindrical extension portion 122 extending outward (toward the tip) from spherical portion 121 along the axis of ball 120. The outer diameter of spherical portion 121 is set smaller than the inner diameter of outer surrounding portion 111 so that ball 120 is accommodated inside cap 110. Also, in order to prevent ball 120 accommodated inside cap 110 from escaping from the tip side, the outer diameter of spherical portion 121 is set larger than the inner diameter of narrowed portion 112. On the other hand, the outer diameter of extension portion 122 is set smaller than the inner diameter of narrowed portion 112.

[0029] The spherical portion 121 is provided with a stopper accommodating hole 129 that is formed from the rear end side toward the front end and that accommodates a stopper 130. The stopper accommodating hole 129 is a bottomed tapered hole whose inner diameter decreases toward the front end. The front end side of the spherical portion 121 is provided with a rope introduction hole 128 that extends from the inner surface of the extension portion 122 and is formed from the front end side toward the rear end so as to reach the stopper accommodating hole 129. The rope introduction hole 128 is a hole for introducing a rope (not shown) to the rear end side of the ball 120, and is a parallel hole whose inner diameter is smaller than that of the stopper accommodating hole 129.

[0030] The stopper 130 has two semi-cylindrical semi-cylindrical parts 131, 132 whose outer diameter is set to be approximately the same as that of the stopper receiving hole 129 of the ball 120, two band-shaped connecting parts 133 that connect the two semi-cylindrical parts 131, 132 at the tip side, and semi-circular plates 134, 135 that are provided on the inner surface side of the two semi-cylindrical parts 131, 132 and extend inwardly and are approximately semi-circular. The two semi-cylindrical parts 131, 132 are formed in a tapered shape whose outer diameter decreases toward the tip. As can be seen from FIG. 2, the two semi-circular plates 134, 135 provided on each of the semi-cylindrical parts 131, 132 are arranged alternately in the axial direction.

[0031] The stopper 130 is made of a flexible material such as soft resin (for example, polyethylene or polypropylene), and the connecting portion 133 that connects the two semi-cylindrical portions 131, 132 is formed in a strip shape. Therefore, when the connecting portion 133 is deformed, the stopper 130 is deformed such that the two semi-cylindrical portions 131, 132 open at the rear end sides.

[0032] The body 140 is a cylindrical member whose outer and inner diameters are constant over the entire length in the axial direction. Since the body 140 occupies most of the outer shape of the grip 100, a user of a skipping rope that employs the grip 100 of the first embodiment usually holds the body 140 when skipping rope.

[0033] The ring 150 is an annular member, and has an outer diameter set to be approximately the same as the outer diameter of the body 140, and an inner diameter set to be equal to or smaller than the inner diameter of the body 140. The ring 150 is disposed so as to be sandwiched between the rear end surface of the body 140 and the shaft 160, as shown in FIG.

[0034] Shaft 160 is a member in which cylindrical threaded portion 161 having a male thread, round bar-shaped shaft portion 162, cylindrical guide portion 163, and circular plate-shaped flange 164 are integrally formed in this order from the tip side to the rear end side. As can be seen from Figures 1 and 2, the outer diameter of shaft portion 162 is set to be smaller than the outer diameters of threaded portion 161 and guide portion 163.

[0035] The outer diameters of the threaded portion 161 and the guide portion 163 are set to be slightly smaller than the inner diameter of the body 140, and the outer diameter of the flange 164 is set to be approximately the same as the outer diameter of the body 140. In addition, the male thread formed on the threaded portion 161 is configured to mesh with the female thread 119 formed on the cap 110.

[0036] Therefore, as shown in FIG. 2(a), by passing the shaft 160 through the inside of the body 140 and screwing the male thread formed on the threaded portion 161 into the female thread 119 formed on the cap 110, the body 140 is sandwiched between the rear end surface of the cap 110 and the front end surface of the flange 164 via the ring 150.

[0037] In the first embodiment, the length of the threaded portion 161 is made sufficiently long so that the threaded portion 161 remains inside the body 140 in this state, and therefore misalignment of the axes of the body 140 and the shaft 160 is suppressed at the tip end of the body 140. Also, since the guide portion 163 is inserted inside the body 140 at this time, misalignment of the axes of the body 140 and the shaft 160 is suppressed also at the rear end of the body 140.

[0038] In this manner, in the first embodiment, the body 140 is sandwiched between the cap 110 disposed on the tip side and the flange 164 disposed on the rear end side via the ring 150 formed of an elastomer, and misalignment of the axial centers of the body 140 and the shaft 160 is suppressed. Therefore, the cap 110, the body 140, and the shaft 160 are stably fixed.

[0039] Furthermore, by fixing the cap 110, the body 140, and the shaft 160 via the ring 150 made of elastomer, even if the male thread formed on the threaded portion 161 and the female thread 119 formed on the cap 110 begin to loosen, further loosening is suppressed. Therefore, when using a skipping rope that employs the grip 100 of the first embodiment, the male thread formed on the threaded portion 161 and the female thread 119 formed on the cap 110 are prevented from loosening and causing the cap 110 to fall off.

[0040] Furthermore, guide portion 163 has a constant outer diameter over almost the entire length in the axial direction, but has a recessed area 169 at its rear end, the outer diameter of which is slightly smaller and set to be approximately the same as the inner diameter of ring 150. By fitting ring 150 into this recessed area 169, ring 150 is positioned so as to contact flange 164, so that it becomes easy to position ring 150 in an appropriate position when body 140 is sandwiched between cap 110 and flange 164. However, the formation of the recessed area in the guide portion may be omitted.

[0041] Furthermore, in grip 100 of the first embodiment, body 140 is fixed by screwing male threads formed on threaded portion 161 of shaft 160 into female threads 119 formed on cap 110, so that body 140, which accounts for most of the outer shape, can be easily replaced. In this way, since the body, which characterizes the design of the grip, can be easily replaced, it becomes easier to match the grip to the preferences of the user.

[0042] In addition, since the screws for fixing the body 140 are formed in the cap 110 and the threaded portion 161 of the shaft 160, threading of the body 140 can be omitted. Therefore, soft resin or wood that is difficult to thread can be used as the material for the body, making it easier to match the feel of the grip to the user's preference.

[0043] A2. Rope installation: FIG. 3 is an explanatory diagram showing how a skipping rope 900 is attached to the grip 100 of the first embodiment. FIG. 3(a) to FIG. 3(c) show the process of attaching the rope 900 to the grip 100, and FIG. 3(d) shows the state in which the rope 900 attached to the grip 100 is moved. Note that in FIG. 3(a) to FIG. 3(d), each state is shown as a cross-sectional view of a cut surface along the axis of the grip 100. In addition, the center of the rope 900 may pass through a position outside the cut surface of FIG. 3(a) to FIG. 3(d), but in FIG. 3(a) to FIG. 3(d), for convenience of illustration, the center of the rope 900 is depicted as passing through the cut surface.

[0044] 3(a), when attaching the rope 900 to the grip 100, the rope 900 is first passed through the cap 110 and the ball 120 in this order from the tip side. The rope 900 thus passed through the cap 110 and the ball 120 is then passed through the stopper 130.

[0045] Specifically, the stopper 130 is set in a state in which the rear end sides of the two semi-cylindrical portions 131 and 132 are open. Then, the rope 900 is passed between one semi-cylindrical portion 131 and the semi-circular plate 135 provided on the other semi-cylindrical portion 132.

[0046] Next, as shown in FIG. 3(b), with the rope 900 sandwiched between the semicircular plate 134 provided on one semi-cylindrical portion 131 and the semicircular plate 135 provided on the other semi-cylindrical portion 132, the stopper 130 is pushed from its tip side into the stopper accommodating hole 129 of the ball 120.

[0047] As a result, an inward load is applied to the two semi-cylindrical portions 131, 132, and the semi-circular plates 134, 135 provided on the two semi-cylindrical portions 131, 132, respectively, bite into the rope 900. Then, the rope 900 is deformed as the semi-circular plates 134, 135 bite into the rope 900, and the rope 900 and the semi-circular plates 134, 135 come into contact with each other in the axial direction, so that the rope 900 is fixed to the stopper 130 in the axial direction.

[0048] At this time, a reaction force of the load applied from the semicircular plates 134, 135 to the rope 900 acts to open the rear ends of the two semi-cylindrical portions 131, 132. Therefore, a load is applied from the semi-cylindrical portions 131, 132 to the inner surface of the stopper accommodating hole 129 of the ball 120, and the stopper 130 is fixed to the ball 120.

[0049] Then, as shown in FIG. 3(c), when the rope 900 is pulled in the distal direction, the spherical portion 121 of the ball 120 comes into contact with the narrowed portion 112 of the cap 110, and the movement of the rope 900 in the distal direction is restricted.

[0050] 2, a male screw formed on the threaded portion 161 of the shaft 160 is screwed into the female screw 119 formed on the rear end side of the cap 110, so that the rear end side of the cap 110 is closed by the threaded portion 161 of the shaft 160. This restricts the movement of the ball 120 to which the rope 900 is fixed in the rear end direction, so that the rope 900 is attached to the grip 100.

[0051] At this time, since the rope 900 is attached to the grip 100 via the ball 120 housed in the cap 110 in a non-fixed manner, the rope 900 and the ball 120 are free to rotate about the axis of the grip 100. Therefore, when using the grip 100 and the rope 900 for skipping rope, the rope 900 itself is prevented from twisting during use.

[0052] Furthermore, narrowed portion 112 of cap 110 comes into contact with spherical portion 121 of ball 120, which has a spherical outer surface, thereby restricting movement of ball 120 toward the tip. Therefore, as shown in Fig. 3(d), the direction of the axis of ball 120, i.e., the arrangement direction of spherical portion 121 and extension portion 122 of ball 120, may be different from the direction of the axis of cap 110 (i.e., the axis of grip 100).

[0053] As a result, as long as there is no interference between the extension portion 122 of the ball 120 and the narrowed portion 112 of the cap 110, the axial direction of the ball 120, i.e., the direction in which the rope 900 extends from the grip 100, can freely change relative to the axis of the grip 100.

[0054] Thus, according to the first embodiment, twisting of the rope 900 is suppressed, and the direction in which the rope 900 extends is free with respect to the axis of the grip 100. Therefore, by using a skipping rope that employs the grip 100 and the rope 900, a user can skip rope more easily.

[0055] In addition, in the first embodiment, when stopper 130 is pressed into stopper accommodating hole 129 of ball 120, the reaction force of the load applied to rope 900 from semicircular plates 134, 135 is applied to the inner surface of stopper accommodating hole 129 from semicylindrical portions 131, 132, thereby fixing stopper 130 to ball 120.

[0056] However, if stopper 130 is pushed toward the rear end with a sufficiently strong force against ball 120, stopper 130 can be removed from ball 120. Then, with stopper 130 removed from ball 120, rope 900 can be easily removed by opening the rear end sides of two semi-cylindrical portions 131, 132.

[0057] Thus, according to the first embodiment, the rope 900 can be easily attached and detached to the grip 100 (i.e., the stopper 130 and the ball 120), making it easier to adjust the length of the rope 900 and to replace the rope 900 that has deteriorated due to use or aging.

[0058] B. Second embodiment: B1.Grip configuration: Fig. 4 is an exploded perspective view of a grip 200 according to a second embodiment, and Fig. 5 is a cross-sectional view of the grip 200 taken along a cut surface along the axis of the grip 200. Fig. 5(a) shows the entire grip 200, and Fig. 5(b) shows an enlarged view of a portion of the grip 200 on the tip side.

[0059] As shown in Figs. 4 and 5, the grip 200 of the second embodiment differs from the grip 100 of the first embodiment in that the shapes of the body 240 and the shaft 260 are changed and a weight 270 is added. Other points are the same as the grip 100 of the first embodiment. Therefore, unless otherwise necessary, a description of the contents common to the first embodiment will be omitted. In the grip 200 of the second embodiment, elements having the same configuration as the grip 100 of the first embodiment are given the same reference numerals as the grip 100, and elements corresponding to the elements in the grip 100 have the hundreds digit of the reference numeral changed from "1" to "2."

[0060] The body 240 constituting the grip 200 of the second embodiment is composed of a cylindrical portion 241 provided at the tip end and a bulging portion 242 provided at the rear end with a bulging outer surface. The inner diameter of the body 240 is constant throughout the axial direction, similar to the body 140 of the first embodiment. The shapes of the tip and rear ends of the body 240 are also similar to those of the body 140 of the first embodiment.

[0061] As described below, the outer surface of bulging portion 242 is substantially pentagonal when viewed from the axial direction, and the outer surface of body 240 is generally smoothly curved. By forming bulging portion 242 and the entire outer surface of body 240 in this manner, body 240 can be easily gripped, allowing a user of a jump rope equipped with grip 200 to jump rope more comfortably.

[0062] The shaft 260 constituting the grip 240 of the second embodiment has, in addition to a threaded portion 261, a shaft portion 262, a guide portion 263, and a flange 264, nine partition portions 265 that separate the threaded portion 261 and the guide portion 263 at equal intervals. The partition portions 265 are formed so as to extend outward from the shaft portion 262 in the shape of a regular square prism.

[0063] The partition 265 has a notch extending from the outer periphery toward the inside so that the outer shape of the partition 265 is cross-shaped when viewed from the axial direction. Similarly, the threaded portion 261 is formed by cutting the threaded portion 161 (FIG. 1) in the first embodiment from the outer periphery toward the inside so that the shape of the threaded portion 261 when viewed from the axial direction is cross-shaped like the partition 265.

[0064] Weight 270 is a generally cylindrical member that extends in the axial direction and has mounting hole 279 set to have approximately the same width as shaft portion 262, and slit 278 that extends from a corner of mounting hole 279 toward the outer periphery. The length of weight 270 in the axial direction is set to be approximately the same as the interval between adjacent partition portions 265, or the interval between partition portion 265 and threaded portion 261 or guide portion 263.

[0065] Weight 270 is formed from a flexible material such as an elastomer, and is removably attached to shaft portion 262 by placing the outer end of slit 278 against the corner of shaft portion 262 with slit 278 open and pushing weight 270 toward the shaft core.

[0066] As described above, in shaft 260 of the second embodiment, notches are formed in partition portion 265 and threaded portion 261, but it is also possible to omit the formation of the notches. However, in order to make it easier to remove weight 270, it is preferable to provide notches in partition portion 265 and threaded portion 261. The shape of the notch can be changed in various ways as long as it is possible to make it easier to remove weight 270.

[0067] In the second embodiment, by providing multiple partitions 265 on shaft 260 in this way, movement of weight 270, which is detachably attached to shaft 262, in the axial direction is restricted. Therefore, a user of a skipping rope incorporating grip 200 can change the attachment position of weight 270 to appropriately change the position of weight 270 in the axial direction, thereby adjusting the balance of grip 200 according to the user's preference.

[0068] Furthermore, the weight 270 can be attached or detached by loosening the female thread 119 formed on the cap 110 and the male thread formed on the threaded portion 261, and removing the shaft 260. Therefore, according to the second embodiment, the weight 270 can be attached or detached to the grip 200 more easily.

[0069] Although the grip 200 of the second embodiment has a single weight 270, the grip itself may omit the weight 270, or a plurality of weights 270 may be attached to the shaft 260.

[0070] B2.Grip appearance: FIG. 6 is a six-sided view showing the appearance of the grip 200 of the second embodiment, with FIG. 6(a) being a plan view, FIG. 6(b) being a front view, FIG. 6(c) being a rear view, FIG. 6(d) being a bottom view, FIG. 6(e) being a left side view, and FIG. 6(f) being a right side view.

[0071] As shown in Figures 6(e) and 6(f), the bulging portion 242 of the body 240 (see Figures 4 and 5) constituting the grip 200 has an outer surface that is substantially pentagonal when viewed from the axial direction. The outer surface of the body 240 is a smoothly curved surface as a whole. In this way, the design of the body 240, which accounts for most of the outer shape of the grip 200, is extremely sophisticated, and therefore the design of the grip 200 is enhanced.

[0072] 6(a) to 6(d), if the body 240 constituting the grip 200 is made of a transparent material (e.g., acrylic resin or polycarbonate resin), the shape of the shaft 260 will appear on the exterior of the grip 200. In this way, the shape of the shaft 260 will appear on the exterior, and in combination with the highly designed body 240, the design quality of the entire grip 200 will be extremely high.

[0073] C. Variations: The present invention is not limited to the above-described embodiments, and can be embodied in various forms without departing from the spirit and scope of the present invention. For example, the following modifications are also possible.

[0074] C1. Variation 1: In each of the above embodiments, a cylindrical body 140 and a body 240 having a bulge 242 are used as the bodies of grips 100, 200, respectively. However, it is also possible to replace the body 140 in grip 100 of the first embodiment with a body having a bulge, and to replace the body 240 in grip 200 of the second embodiment with a cylindrical body.

[0075] Furthermore, as described above, in each of the above embodiments, the body constituting the grip can be easily replaced with various other bodies. Therefore, instead of the bodies 140 and 240 in each of the above embodiments, it is also possible to use bodies having shapes different from the bodies 140 and 240 (for example, a dumbbell shape or an ellipsoid shape).

[0076] In this case, it is only necessary that the portions of the shafts 160, 260 that are inserted into the bodies 140, 240 (insertion portions), i.e., the threaded portions 161, 261, the shaft portions 162, 262, the guide portions 163, 263 and the partition portion 265, can be inserted into the bodies and that the threaded portions 161, 261 can pass through the bodies.

[0077] C2. Variation 2: In each of the above embodiments, a single ring 150 is placed between the rear end surface of the body 140, 240 and the tip surface of the flange 164, 264 provided on the shaft 160, 260, and the male thread formed on the threaded portion 161, 261 of the shaft 160, 260 is screwed into the female thread 119 formed on the cap 110, so that the body 140, 240 is sandwiched between the rear end surface of the cap 110 and the tip surface of the flange 164, 264 via the ring 150.

[0078] However, the ring does not necessarily have to be placed only between the rear end surface of the body 140, 240 and the tip surface of the flange 164, 264; the ring may be placed only between the rear end surface of the cap 110 and the tip surface of the body 140, 240, or may be placed both between the rear end surface of the cap 110 and the tip surface of the body 140, 240 and between the rear end surface of the body 140, 240 and the tip surface of the flange 164, 264.

[0079] Even in this case, by screwing the male threads formed on the threaded portions 161, 261 of the shafts 160, 260 into the female threads 119 formed on the cap 110, the bodies 140, 240 are sandwiched between the rear end surface of the cap 110 and the front end surfaces of the flanges 164, 264 via the ring. Therefore, as in the above embodiments, when the skipping rope is being used, the male threads formed on the threaded portions 161, 261 and the female threads 119 formed on the cap 110 loosen, preventing the cap 110 from falling off.

[0080] However, it is preferable to place a single ring 150 between the rear end surface of the body 140, 240 and the tip surface of the flange 164, 264 provided on the shaft 160, 260, since this makes it possible to maintain the ring 150 attached to the shaft 160, 260 when the shaft 160, 260 is pulled out from the body 140, 240 and to prevent loss of the ring 150.

[0081] C3. Variation 3: In each of the above embodiments, the threaded portion 161, 261 has a male thread formed over the entire axial direction, but it is also possible to form a male thread only at the tip of the threaded portion. If the portion of the threaded portion where the male thread is not formed penetrates the body 140, 240, it is possible to suppress interference between the portion where the male thread is not formed and the cap by forming an area with a large inner diameter on the rear end side of the female thread formed in the cap.

[0082] C4. Variation 4: In each of the above embodiments, the shaft portion 162, 262 that is thinner than the threaded portion 161, 261 and the guide portion 163, 263 is provided at the insertion portion of the shaft 160, 260, but it is also possible to omit the shaft portion 162, 262 and use a shaft whose insertion portion has a substantially constant outer diameter over the entire axial direction. However, in this case, the weight of the grip itself increases and the grip balance cannot be adjusted, so it is preferable to provide the shaft portion 162, 262 at the insertion portion of the shaft 160, 260 as in each of the above embodiments.

[0083] In addition, if the outer diameter of the insertion portion is approximately the same throughout the entire axial direction, the screw portion and the guide portion can be regarded as the portion toward the tip side from an appropriately set position in the axial direction of the insertion portion, and the portion toward the rear side from that position, respectively.

[0084] C5. Variation 5: In each of the above embodiments, the stopper accommodating hole 129 formed in the ball 120 is a tapered hole whose inner diameter decreases toward the tip, and the two semi-cylindrical portions 131, 132 of the stopper 130 are tapered with their outer diameters decreasing toward the tip, but the stopper accommodating hole may be a parallel hole, and the semi-cylindrical portions may be non-tapered with a constant outer diameter in the axial direction. However, it is preferable that at least one of the stopper accommodating hole and the semi-cylindrical portions be tapered, since this makes it easier to attach the stopper with the rope inserted into the stopper accommodating hole and to remove the stopper attached to the stopper accommodating hole.

[0085] C6. Variation 6: In each of the above embodiments, the stopper 130 is composed of two semi-cylindrical portions 131, 132, two connecting portions 133, and semi-circular plates 134, 135 extending inwardly from each of the two semi-cylindrical portions 131, 132, but the configuration of the stopper can be modified in various ways.

[0086] The stopper may be provided with a number of sleeve pieces connected at the tip end and formed by dividing a cylindrical member (sleeve) along its axial direction, and an insertion portion protruding from the inside of each of the sleeve pieces and biting into the rope inserted into the stopper when an inward load is applied to the sleeve pieces.

[0087] For example, the stopper can be made by dividing a cylinder into three sleeve pieces, which are connected at the tip end as in the above embodiments, and by providing protrusions protruding inward from each of the three sleeve pieces as the insertion portion.

[0088] In addition, two of the four sleeve pieces obtained by dividing the cylinder into four can be connected at the tip side as in the above embodiments, and a protrusion protruding inward from each of the two sleeve pieces can be provided as an insertion portion and used as a stopper.

[0089] In the stopper 130 in each of the above-described embodiments, the two semi-cylindrical portions 131, 132 correspond to the sleeve pieces, and the semi-circular plates 134, 135 extending inwardly from the two semi-cylindrical portions 131, 132 respectively correspond to the fitting portions. [Explanation of symbols]

[0090] 100…Grip 110…Cap 111...Outer enclosure 112...Stenosis 118…Recess 119…Female thread 120…ball 121...Spherical part 122...Extending part 128…Rope entry hole 129...Stopper accommodation hole 130…Stopper 131, 132... Semi-cylindrical section 133…Connection 134, 135...Semicircular disc 140…Body 150…Ring 160…Shaft 161…Threaded section 162…Shaft 163…Guide section 164...Flange 200…Grip 240…Body 241…Cylindrical section 242...Expanded diameter part 260…Shaft 261…Threaded section 262…Shaft 263…Guide section 264...Flange 265…Partition 270...weight 278...Slit 279…Mounting hole 900…Rope

Claims

1. A skipping rope grip, comprising: A cap into which a skipping rope is inserted from the tip side, and which is configured to accommodate the end of the rope inside and prevent the end from coming off in the tip direction; a hollow body disposed on a rear end side of the cap; a shaft including an insertion portion inserted from a rear end side of the body, a portion of which penetrates the body and is configured to suppress misalignment of an axis with the body, and a flange provided on the rear end side of the insertion portion; an annular ring made of an elastomer, the annular ring being disposed at least one of between a rear end surface of the cap and a front end surface of the body and between the rear end surface of the body and a front end surface of the flange; Equipped with a female thread formed on a rear end portion of the cap and a male thread formed on a front end portion of the insertion portion are screwed into each other, so that the body is sandwiched between the rear end surface of the cap and the front end surface of the flange via the ring. Skipping rope grip.

2. The jump rope grip of claim 1, wherein the insertion portion has a threaded portion at the tip end on which the male thread is formed, a guide portion at the rear end that prevents the axial core from misaligning with the body, and a shaft portion that is provided between the threaded portion and the guide portion and has an outer diameter smaller than that of the threaded portion and the guide portion.

3. 3. The skipping rope grip according to claim 2, wherein the insertion portion further includes a plurality of partitions extending outward from the shaft portion and separating the threaded portion and the guide portion at equal intervals.

4. 4. The skipping rope grip according to claim 3, wherein the threaded portion and the partition portion have a notch extending inward from the outer periphery.

5. The skipping rope grip according to any one of claims 1 to 4, further comprising: a ball having a substantially spherical portion and a cylindrical extension portion extending from the spherical portion toward a tip end thereof, the ball being accommodated inside the cap; a stopper having a plurality of sleeve pieces connected at their tip ends, the stopper being configured so that the rope can be inserted therein, and an insertion portion protruding from the inside of each of the plurality of sleeve pieces and biting into the rope when an inward load is applied to the sleeve pieces; Equipped with The ball is formed with a bottomed stopper accommodating hole that is formed from the rear end side toward the front end direction and accommodates the stopper, and a rope introduction hole that is formed from the front end side of the extension portion toward the rear end direction and reaches the stopper accommodating hole, The stopper and the stopper accommodating hole are configured such that, when the stopper with the rope inserted therein is inserted into the stopper accommodating hole, a load is applied inwardly from the stopper accommodating hole to the multiple sleeve pieces. Skipping rope grip.

6. A skipping rope comprising a rope and two of the skipping rope grips according to any one of claims 1 to 5 attached to both ends of the rope.

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