JPH0668769U - Rope grip with two parallel axes of rotation - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] It was considered as a system that complements wrist work in order to obtain smoothness during initial motion and acceleration during the rotation of a jump rope. [Structure] An attempt is made to achieve the purpose by making the center lines of the grip grip portion and the connecting portion of the rope not parallel to each other but to be biaxial and parallel to each other. As a method of forming the two parallel axes, a split type using a crank type joint and an integrated type integrally formed by plastic can be considered.

Description

[Detailed Description of the Device] A jump rope has a basic structure in which a rope and a grip are connected by a fastener. And, as shown in Fig. 1, the center lines of the rope and the grip are usually on the same line.

At the time of turning the jump rope, especially at the time of initial movement and acceleration, the turning force is obtained by giving the tip of the grip more rotation than the grip.

In other words, by twisting the wrist work on the grip and giving it a twist, the movement of creating a turn on the rope of the rope is performed.

Beginners have a hard time jumping and turning a rope at the same time in a jump rope movement. The present invention was made to make it easier to turn the rope so that it can help the user as a tool.

As a method, a grip as shown in Fig. 2.3 was considered as a mechanism to increase the effect of wrist work on the ribs.

The grip shown in FIG. 2 is made by integrally molding plastic.

One end of the grip is a grip. The other end is the connecting part with the rope. By making the center lines of both ends parallel and non-identical and allowing a distance between the axes, a larger twist occurs during wrist work.

The purpose is to make it easier to turn the rope.

In the grip shown in Fig. 3, the grip part and the joint part are molded separately, and the middle is connected by a crank-type joint to form two axes in parallel, and the joint crank mechanism rotates the joint part. The crank mechanism creates movement that assists wrist work, improving rope turning performance.

This separable type can construct a double relativity type grip which can deal with the twisting of the rope caused by the rotation of the skipping rope and the twisting of the rope caused by the wristwork.

This method improves operability as a jump rope.

The jump rope can also be expected to have improved durability against deterioration of the rope due to torsional stress.

[Brief description of drawings]

[Fig.1] Conventional jump rope composition ・ Rope and grip center are the same

[Figure 2] Plastic integrally molded grip with two parallel axes

[Fig. 3] Joint type split type grip with a crank type joint having two parallel axes.

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[Procedure amendment]

[Submission date] December 10, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

[Figure 1] Conventional jump rope configuration diagram The center lines of the rope and grip are the same

[Figure 2] Cross-sectional view of a grip with two parallel axes Plastic integrally molded product

[Fig. 3] Cross-sectional view of a grip having two parallel axes Split type with crank joint

[Brief explanation of reference numerals] 1 grip grip 2 rope 3 grip centerline 4 centerline in the length direction of rope 5 non-uniformity between the centerlines of 3 and 4 6 fastener 7 fastener cap 8 cap fastener washer 9 Rotor pin 10 Crank joint

Claims (3)

[Scope of utility model registration request] 1. A mechanism for assisting wrist work when accelerating when jumping a jump rope and enhancing turning performance. 2. A grip for a jump rope, wherein the ropes and the grip do not have the same center line but have two parallel axes. 3. As a biaxial construction method, there are two methods: a separation type in which a joint portion between a grip portion and a rope is connected by a crank joint, and a method in which the grip portion and the joint portion are integrally formed.