KR200457322Y1

KR200457322Y1 - Structure of weights on jumping rope

Info

Publication number: KR200457322Y1
Application number: KR2020110007264U
Authority: KR
Inventors: 이해석
Original assignee: 이해석
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2011-12-13

Abstract

The present invention relates to a weight extrapolated to a rope for the purpose of preventing rope wear and damage and to increase the rotational force of the rope, and the inner diameter of the center portion of the weight in the form of a conventional pipe snip is extrapolated by fitting to the rope rope. The weights placed on the strings do not move easily, so there is little shaking and twisting of the strings.

Description

Structure of weights on jumping rope}

The present invention relates to a structure of a plastic or rubber weight used in a jump rope, which is a personal exercise device, is used to be fitted to the jump rope.

In recent years, rope skipping has been installed on the outside of the rope to increase the rotational force of the rope and to prevent the wear of the rope against the ground. This weight is widely distributed in various colors and shapes.

However, rope skipping with weights extrapolated to a rope is more difficult to loosen if the rope is twisted when the rope is stored.This is because the gaps caused by the weights moving in the rope cause other parts to be pinched and the weights are entangled with each other. do.

In order to solve this problem, a technique of injecting weights together with fixing the weights at regular intervals was also introduced, but this suffered from an unproductive problem in which only one weight was damaged and the entire line could not be used.

The known technique for attaching weight to a rope skipping rope is as follows: 1.Weight rope skipping, in Korea Registered Utility Model No. 20-0381118 (2005.3.30), aims at increasing the centrifugal force action of a rope skipping rope. A technique has been attempted to extrapolate a plurality of weights in the form of pipe chips to a rope skipping rope (see Fig. 1 a). 2. In addition, the domestic registration patent No. 10-0656435 (2006.12.05) 'rope skipping' is provided with a line protection member on the outer surface of the line, the line protection member is a concave and convex portion formed in the transverse concave In order to reduce the friction and air resistance with the ground, a technique has been attempted for a string protecting member (see FIG. 1B). 3. In addition, in Korean Registered Utility Model No. 20-0436661 (2007.9.12), 'rope skipping' forms weights directly on the surface of the rope skipping line integrally with the rope skipping line by injection molding, thereby increasing the centrifugal force during the rotation of the rope skipping rope. Techniques have been attempted to prevent twisting of the wires (see c in FIG. 1). 4. In addition, in Korean Utility Model Model No. 20-2009-0012357, 'rope skipping' has been attempted to enhance the visual effect by forming different colored bands on the surface of the weight extrapolated to the rope.

None.

No. 1 of the prior art (domestic registered utility model No. 20-0381118, 'Weight rope skipping') is to extrapolate the pipe-shaped weight to a plurality of lines, which weights protect the line and also the rotational centrifugal force of the line Although there is an effect of increasing the weight, the extrapolated weights are easily moved along the line, and thus there is a problem of deepening the twist or entanglement of the rope when the rope is stored.

In some of the claims of the prior art, but the locking jaw to prevent the movement of the weight is formed on the boundary between the middle region and the left and right regions of the rope, but this does not play a role for reducing the twist of the rope when rope skipping.

In addition, No. 2 (Domestic Patent No. 10-0656435. 'Jumping Rope') of the prior art is that only the weight of the surface shape of the weight is changed, and the extrapolated weights on the wire move freely with the prior art No. 1 above. No different.

In addition, leading technology No. 3 (Domestic Registration Model No. 20-0436661, 'Jumping Rope') is a method of molding injection of weights directly with the string directly on the outer circumferential surface of the string. Its purpose was to protect itself and to prevent the twisting of the rope when it was stored, but there were some problems: only one weight failure occurred during the injection of continuous weights formed at regular intervals on the surface of the rope. If one of the strings or damage to one of the weights occurs when using the rope skipping, there is a problem that the entire weight is attached to the rope attached. In the case of the prior art 1 or 2, the damaged weight is removed from the rope and replaced with another one. In the case of the prior art 3, this is not possible. Although it is possible to make a variety of tubular rope skipping, in the case of 3, if the weights of different colors are mixed, the manufacturing process becomes expensive.

In addition, in the case of the prior art 4, the basic configuration is the same as 1 except that the decorative strip is added to the outer surface of the weight.

The present invention compensates for the problems of the prior art as described above, to protect the line, to help the centrifugal force during the rotation of the line, and to obtain the effect of preventing the twist of the line even when the rope is stored, while at the same time easily It is intended to disclose a weight that can be assembled and that can reduce the manufacturing process and cost of use.

To this end, the present invention changes the structure of the weight having the same shape as a conventional pipe chip which is extrapolated to a rope skipping rope so that the inner diameter of the center portion of the weight is coupled to the outer surface of the rope by fit.

By extrapolating the weight of the present invention by fitting it to the rope skipping line, the weights can be arranged in the desired part, and the weights are not easily moved on the rope, so there is less twisting when storing the rope skipping. The advantages of using conventional weights, which can alternately assemble weights and can be easily replaced even in case of partial damage, remain in place.

1 is a cross-sectional view showing an example of a conventional weight mounting technology
Figure 2 is an enlarged cross-sectional view showing an example of the weight structure of the present invention
3 and 4 is a cross-sectional view showing another embodiment of the present invention weight
Figure 5 is a longitudinal cross-sectional view for explaining the structure of the projections

The weight structure of the rope skipping rope according to the present invention, in the conventional weight in the form of a hollow pipe that the rope skipping rope can be freely penetrated, its length is in the range of 1cm ~ 4cm, the inner central portion of the hollow formed weight By forming the protrusions, the weight is extrapolated to the interference rope jump rope.

Such preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. (All drawings in FIGS. 1 to 5 show only a cross-section of a part of which a weight is fitted to a rope in the rope skipping, Other parts are omitted)

1 is a cross-sectional view showing a characteristic example of the conventional weight, Figure 2 is an enlarged cross-sectional view showing an example of the weight structure of the present invention, Figures 3 and 4 is a perspective view showing another embodiment of the present invention.

First, Fig. 1 is shown. Fig. 1 shows a part of a jump rope in which weights are inserted, and shows examples of three types of weights having different structures in respective cross-sectional views.

A in Figure 1 is the weight of the form of a common pipe piece. Numeral 10 in the figures, reduce conventional jump rope, and reference numeral 20 is a gap between the weight, reference numeral 30 is a line 10 and the weight 20. Further b is The concave portion 40 and the convex portion 50 are formed on the outer surface of the weight to reduce the resistance of the air due to the weight when the rope jump rope.

The weights described above have a gap 30 between the string 10 and the weight 20 penetrated into the weight 20, and thus the weights 20 are easily moved according to the position of the string 10. This point makes it easier to fit the weight 20 into the rope 10, but the rope 20 also prevents the stable rotation of the rope by moving the weights 20 according to the height of the rope 10 when the rope jumps. Even during storage, the weights 20 are not in a certain position, making it difficult to arrange the file 10, and once tangled, it is difficult to solve.

In addition, c of FIG. 1 shows an example of the weight 20 'injection-molded integrally with the string 10. In the drawing, reference numeral 60 denotes a fusion portion, which is a boundary surface between the string 10 and the weight 20'. The part to which resin was melt-bonded to is shown.

The weight 20 is made of synthetic resin or rubber, the size of the weight 20 does not exceed the maximum diameter of 3cm, the length is preferably in the range of 1cm ~ 4cm.

Figure 2 is an enlarged cross-sectional view showing an example of the weight of the present invention, the basic shape of the weight (20 ") is in the form of a pipe stub that can be easily passed through the line 10.

However, the inner diameter of the weight 20 "is not constant. That is, the inlet portion through which the string 10 passes (a portion indicated by x in the drawing) is naturally larger than the outer diameter of the string 10 to facilitate insertion of the string 10. Although formed to be large, the inner central portion of the weight (20 ") is formed at the inner periphery of the protruding portion 70 is formed in a curved surface along the inner circumference, the inner diameter formed by the protrusion 70 so as to press the surface of the string 10 It is smaller than the outer diameter of the string 10.

Both sides of the inlet 20 and the protrusion 70 of the weight 20 "are connected to a smooth inclined surface. In FIG. 2, the portion indicated by the broken line is a side assembled side by side weight, and the structure thereof is the same, it is omitted.

In addition, Fig. 3 shows an example in which the cross section of the weight 20 "pressing the string 10 has a streamline design such that the cross section of the weight is similar to the cross section of the checkerboard. The shape of the weight 20 "can be variously designed within the technical gist of the present invention, which forms the protrusion 70 for pressing and fixing).

In addition, the longitudinal section of the protrusion 70 in the weight 20 "may have a shape in which three points protrude as well as a circular shape. In order to explain this, a longitudinal cross-sectional view of the y-y 'portion of FIG. 2 is shown in FIG. It was.

In FIG. 5, a shows an example in which a curved protrusion 70 formed in a curved shape along the inner circumference of the center portion of the weight 20 ″ is formed around 360 ° so that its longitudinal cross section is circular. 10 is an outer diameter 120, reference numeral 140 denotes an inner diameter formed by the protrusion 70, and reference numeral 130 denotes an outer diameter of the weight 20 ".

5b shows an example in which the protrusions 70 'are distributed in three places, instead of forming the protrusions 70 around the inner periphery of the weight 20 "at 360 °. This is an example in which the periphery is divided by 120 ° to form a hemispherical protrusion 70 'in detail. This is the case that the string 10 receives when extrapolating the weight 20 "to the string 10. While the pressure can be reduced, the fixing of the weight 20 "will be somewhat weak.

In FIG. 5B, the protrusion 70 'is formed at three points, but may be formed at two or four points.

4 is a perspective view showing another embodiment of the present invention. The surface of the weight 20 ″ shown in FIG. 4 is recessed with a groove 80 along its outer circumference at a central portion thereof, which is a protrusion 70. The purpose of the present invention is to reduce the thickness of the center portion thickened by the formation of. The reason for reducing the thickness is to reduce the weight of the weight (20 ") to lower the rolling resistance and at the same time reduce the material consumption.

In addition, it is also possible to obtain a decorative effect by inserting a ring 90 of a color different from that of the weight 20 "in the vertical groove 80 as shown in FIG.

In order to easily assemble the weight of the structure to the string 10, the tapered end portion of the string 10 or other auxiliary tools are used, which is difficult and difficult depending on the material of the string 10 The detailed description thereof will be omitted.

10; row 20, 20 ', 20 "; weight 30; spacing
40; concave portion 50; convex portion 60; welded portion
70, 70 '; projection 80; groove 90; ring
120; outer diameter of the string
130; outer diameter of the weight 140; inner diameter formed by the protrusion

Claims

In the weight of a conventional rope skipping rope in the form of a cut pipe having a length of 1 cm to 4 cm and having a hollow hole so that the rope can be easily extrapolated,
Wherein the weight 20 "is formed around the inner periphery of the inner surface of the weight (20") so that the pressure is fixed to the surface of the string 10, the protrusions 70 are curved around the inner periphery,
The inner diameter of the protrusion (70) is characterized by being smaller than the outer diameter of the rope 10, rope skipping rope weight structure.

The method of claim 1,
The protrusion part 70 is characterized in that the hemispherical protrusion part 70 'is formed in three parts of the inner surface of the weight 20 "

The method of claim 1,
Grooves 80 are formed along the outer circumference of the center of the surface of the weight 20 ", and the groove 80 is characterized in that a ring 90 of a different color from the color of the weight 20" is inserted. The weight structure of the rope skipping rope.