Rope fastener for skipping rope

Abstract

To provide a rope fastener for a skipping rope with a simple structure.SOLUTION: A rope fastener for a skipping rope (1) is disposed in a cylindrical-shaped grip (5) having a hollow part (5c), and is configured in a shape which is releasably temporarily fixed to a desired portion of a skipping rope (3) inserted into the hollow part of the grip, and which does not come off. The rope fastener includes: an outer ring member (9) including an outer hollow part for inserting the skipping rope, and a press-fit concave part having a larger diameter than the outer hollow part; and an inner ring member including an inner hollow part that can be releasably press-fitted into the press-fit concave part and is intended to insert the skipping rope. The outer hollow part and the inner hollow part are configured nonconcentrically so as to be temporarily fixed by being held in a state where a desired portion of the skipping rope inserted into each of these two hollow parts is bent by press fitting. It is possible to fix the skipping rope and prevent it from coming out of the grip only by press-fitting the inner ring into the outer ring.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a rope fastener for a skipping rope, which is used to temporarily secure the end of the skipping rope within a grip. [Background technology]

[0002] Patent Document 1 shows a length adjustment fixture that clamps both ends of a rope inserted into the grip of a jump rope by compressing clamping means inserted into the narrow diameter part of the grip in the radial direction to form a wedge. The clamping means has a shape similar to a trivet with multiple legs, and the tips of each leg are designed to clamp both ends of the rope in a wedge shape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 07-88210 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the clamping means of Patent Document 1 has a shape similar to a trivet as described above, and therefore has a problem in that its structure is complex. The object of the present invention is to provide a rope stopper for a skipping rope (hereinafter simply referred to as a "rope stopper") that has a simple structure. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention has the following features.

[0006] (Feature of the invention described in claim 1) The rope stopper according to the invention of claim 1 is a skipping rope stopper that is disposed within a cylindrical grip having a hollow portion through which the end of a skipping rope inserted through one end opening can be pulled out from the other end opening, and is configured to be releasably temporarily fixed to a desired portion of the skipping rope inserted into the hollow portion of the grip and to prevent the skipping rope from slipping out of the one end opening.The rope stopper of claim 1 is characterized in that it comprises an outer ring member having an outer hollow portion for inserting the skipping rope and a press-fit recess with a larger diameter than the outer hollow portion, and an inner ring member having an inner hollow portion that can be releasably press-fitted into the press-fit recess and for inserting the skipping rope, and is configured such that the outer hollow portion and the inner hollow portion are non-concentric with each other so that the desired portion of the skipping rope inserted is temporarily fixed by being clamped in a bent state by the press-fit.

[0007] (Feature of the invention described in claim 2) The rope fastener according to the invention of claim 2 is a preferred embodiment of the fastener of claim 1, wherein the inner ring member comprises an inner small diameter portion press-fitted into the press-fit recess, and an inner large diameter portion that is larger in diameter than the inner small diameter portion and continues via an inner step portion. It is characterized by, characterized by.

[0008] (Feature of the invention described in claim 3) The rope fastener of the invention described in claim 3 is a preferred embodiment of the fastener of claim 1 or 2, characterized in that the outer hollow portion is formed at the radial center of the outer ring member, and the inner hollow portion is formed eccentrically in the radial direction of the inner ring member. [Effects of the Invention]

[0009] According to this invention, the jump rope can be secured to the grip by simply press-fitting the inner ring, which has a simple structure, into the outer ring, which has a similarly simple structure, and preventing it from slipping out of the grip. In this way, the jump rope can be secured to the grip with a simple structure. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] 1 is a longitudinal sectional view of a rope fastener, hatching omitted. [Figure 5] FIG. [Figure 6] FIG. 6 is a perspective view of the rope fastener as seen from the opposite direction to that of FIG. 5. [Figure 7] 1 is a partial vertical cross-sectional view of a rope stopper housed in a grip, hatching omitted. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention (hereinafter referred to as "the present embodiment") will be described with reference to the accompanying drawings.

[0012] (Structure of the jump rope) The reference numeral 1 in FIG. 1 indicates a skipping rope. The skipping rope 101 is a tool used for play or exercise, primarily involving jumping over a jumping rope swung with both hands as it passes near the ground. It is sometimes simply called a skipping rope or jump rope. The skipping rope 101 primarily consists of a skipping rope 3, grips 5, 5 attached to both ends of the skipping rope 3, and rope stoppers 1, 1 housed within the grips 5, 5. One of the two rope stoppers 1 is depicted as being visible within one grip 5 (left side of FIG. 1), while the rope stopper 1 housed within the other grip 5 (right side of FIG. 1) is hidden and not visible in FIG. In the following description, only one grip 5 will be described; the other grip 5 will not be described because it has the same structure and function as the first grip 5.

[0013] The grip 5 is a cylindrical member with a predetermined diameter and length and a hollow portion 5c. The material of the grip 5 is generally synthetic resin due to its light weight and ease of manufacture, but there are no particular restrictions. The hollow portion 5c begins at one end opening 5a located on the skipping rope 3 side and ends at the other end opening 5b located on the opposite side. Here, the hollow portion 5c is designed so that the end of the skipping rope 3 inserted through the one end opening 5a can be pulled out through the other end opening 5b. In other words, a portion of the skipping rope 3 is positioned within the hollow portion 5c. The rope stopper 1 is releasably temporarily fixed to the desired position of the skipping rope 3 inserted within the hollow portion 5c and is configured so that it cannot be removed from the one end opening 5a. Meanwhile, the rope stopper 1 can be removed from the other end opening 5b. In other words, the rope stopper 1 is restricted to moving in one direction, from the one end opening 5a to the other end opening 5b. The releasable temporary fixation will be described later. The skipping rope 3 can be made of any material that can be used for skipping, and is mainly made of plastic, wire, rope, beads, etc. The cross-sectional shape of the skipping rope 3 in this embodiment is circular, but is not limited to this.

[0014] (Configuration of rope fastener) The rope stopper 1 shown in Figures 2 to 7 is a component that includes an outer ring member 9 into which the skipping rope 3 is inserted, as well as an inner ring member 7, and is made entirely of synthetic resin. The outer ring member 9 and the inner ring member 7 are sized to have an outer diameter that allows them to fit snugly into the hollow portion 5c of the grip 5 when combined as described below (Figures 1 and 7).

[0015] (Structure of outer ring member) As shown primarily in Figures 5 and 6, the outer ring member 9 is a ring-shaped member with a circular cross-section and a circular outer hollow portion 9c that runs through it in the longitudinal direction. The outer hollow portion 9c is located at the center of the outer ring member 9. This central location positions the skipping rope 3 at the center of the opening 5a on one end of the grip 5, making it easier to maintain uniform rotation of the skipping rope 3. Alternatively, it can be radially offset by a desired distance. The circular cross-sectional shape of the outer hollow portion 9c, as described above, is intended to facilitate insertion of the skipping rope 3, but is not intended to preclude non-circular shapes. The diameter of the outer hollow portion 9c is preferably set to provide sufficient friction to prevent the inserted skipping rope 3 from slipping under its own weight, i.e., to allow for releasable temporary fixation. This temporary fixation simplifies the process, allowing the skipping rope 3 to be temporarily released when adjusting its length (the length inserted into the grip 4). Although it is not prohibited to provide a special structure for temporary fastening, temporary fastening by friction is structurally simple. Release and repositioning of the jump rope 3 are very easy, as they can be done simply by holding the outer ring member 9 and sliding it along the length of the jump rope 3.

[0016] The outer ring member 9 has an outer small-diameter portion 9b that directly surrounds the outer hollow portion 9c, and an outer large-diameter portion 9a that is larger in diameter and concentric with the outer small-diameter portion 9b but offset toward the inner ring member 7. Visually, the outer small-diameter portion 9b protrudes longitudinally from the outer large-diameter portion 9a (Fig. 5). The outer large-diameter portion 9a has a press-fit recess 9d that is larger in diameter and concentric with the outer hollow portion 9c, with an outer step 9e interposed between them (Fig. 6). The press-fit recess 9d surrounds a portion of the outer hollow portion 9c, or it can be said that it is a space that also serves as a portion of the outer hollow portion 9c. The outer surface of the outer large-diameter portion 9a may be knurled (not shown) to facilitate finger pressure during work. Note that the reference symbol 9f in Fig. 6 indicates the end face (outer end face) of the outer large-diameter portion 9a that faces the inner ring member 7. The outer diameter of the outer large diameter portion 9a is formed to be larger than the inner diameter of the one end opening 5a so as to prevent it from slipping out of the grip 5.

[0017] (Structure of inner ring member) Continuing the explanation, we will focus on Figures 5 and 6. The inner ring member 7 has an inner small-diameter portion 7b that is press-fit into the press-fit recess 9d of the outer ring member 9, and an inner large-diameter portion 7a that is concentric with the inner small-diameter portion 7b and has a larger diameter. An inner step 7e is interposed between the inner small-diameter portion 7b and the inner large-diameter portion 7a. The outer diameter of the inner small-diameter portion 7b is smaller than the inner diameter of the press-fit recess 9d by an amount suitable for releasable manual press-fitting. The length of the inner small-diameter portion 7 is preferably made longer than the length of the press-fit recess 9d. If it were too short, the space created between the inner end face 7f and the outer step 9e when press-fitted would likely not be sufficient to clamp the skipping rope 3 in a bent state (Figure 7).

[0018] The inner hollow portion 7c penetrates both the inner large-diameter portion 7b and the inner large-diameter portion 7a. The diameter of the inner hollow portion 7c, like the diameter of the outer hollow portion 9c, is preferably set to provide enough friction to prevent the inserted skipping rope 3 from slipping off under its own weight, i.e., to allow for releasable temporary fixation. The inner hollow portion 7c is radially eccentric with respect to the centers of the inner large-diameter portions 7b and 7a. This is to ensure a non-concentric relationship with the center of the outer hollow portion 9c. Because it is non-concentric, the skipping rope 3 inserted into the inner hollow portion 7c is clamped in a bent state between the inner end face 7f and the outer step portion 9e when press-fitted (FIG. 7). To achieve this non-concentricity, in this embodiment, the outer hollow portion 9c is positioned at the center of the outer ring member 9, and the inner hollow portion 7c is positioned radially eccentric to the inner ring member 7, as described above. However, this relationship may be reversed. In addition, both the inner hollow portion 7c and the outer hollow portion 9c may be radially eccentric from the center. The outer peripheral surface of the inner large diameter portion 7a may be knurled (not shown) to facilitate the transfer of finger force during work.

[0019] (How to use a skipping rope) As described above, rope stopper 1 is temporarily and releasably fixed to the desired location on jump rope 3 inserted within hollow portion 5c of grip 5, and is configured so that it will not slip out through one-end opening 5a (Figure 7). If you then grab jump rope 3 and push it back into grip 5, rope stopper 1 will emerge from the other-end opening 5b of grip 5 along with jump rope 3. If you manually grasp the outer large-diameter portion 9a and the inner large-diameter portion 7a of rope stopper 1 and pull them apart, the inner small-diameter portion 7b (inner ring member 7) that had been press-fit into press-fit recess 9d (outer ring member 9) will slip out, releasing the bend in jump rope 3 and allowing it to move. If you then move both inner ring member 7 and outer ring member 9 to the desired position on jump rope 3 and press them back in, the bend in jump rope 3 will be reformed within rope stopper 1, restricting movement. In this state, if you pull the skipping rope 3 toward the opening 5a at one end, the rope stopper 1 will be pulled into the grip 5 (hollow portion 5c) from the opening 5b at the other end (Fig. 1), and will be blocked by the opening 5a at one end, preventing further movement (Fig. 7). This completes the length adjustment of the skipping rope 3. The above is the length adjustment at one grip, but the same applies to the length adjustment at the other grip 5.

[0020] (Effects unique to this embodiment) As described above, the length of the skipping rope can be adjusted using only the minimum number of components, the inner ring member 7 and the outer ring member 9, and the adjustment operation is simple. This is a very easy-to-use rope stopper 1. [Explanation of symbols]

[0021] 1: rope stopper, 3: skipping rope, 3a: bending portion, 5: grip, 5a: one end opening, 5b: other end opening, 5c: hollow portion, 7: inner ring member, 7a: inner large diameter portion, 7b: inner small diameter portion, 7c: inner hollow portion, 7e: inner stepped portion, 7f: inner end surface, 9: outer ring member, 9a: outer large diameter portion, 9b: outer small diameter portion, 9c: outer hollow portion, 9d: press-fit recess, 9e: outer stepped portion, 9f: outer end surface, 101: skipping rope tool

Claims

1. A rope stopper for a skipping rope is arranged in a cylindrical grip having a hollow portion through which the end of the skipping rope inserted through an opening on one end can be pulled out from an opening on the other end, and is temporarily and releasably fixed to a desired position on the skipping rope inserted into the hollow portion of the grip and configured so that the rope does not slip out of the opening on the one end. an outer ring member having an outer hollow portion for inserting the skipping rope and a press-fit recess having a diameter larger than that of the outer hollow portion; and an inner ring member having an inner hollow portion that can be releasably press-fitted into the press-fit recess and for inserting the skipping rope; The outer hollow portion and the inner hollow portion are non-concentrically configured so that a desired portion of the skipping rope inserted into each of them is temporarily fixed by being pressed into the hollow portion and sandwiched in a bent state. A rope fastener for a skipping rope.

2. the inner ring member includes an inner small diameter portion press-fitted into the press-fit recess, and an inner large diameter portion having a diameter larger than that of the inner small diameter portion and continuing therefrom via an inner step portion.

2. The rope fastener for a skipping rope according to claim 1.

3. the outer hollow portion is formed at the radial center of the outer ring member, and the inner hollow portion is formed eccentrically in the radial direction of the inner ring member.

3. The rope fastener for a skipping rope according to claim 1 or 2.

Images