JPH09299505A - Dumbbell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate handling by making the weights of a dumbbell attachable and detachable to a bar-shaped body, to make the dumbbell effective for dumbbell exercises by variously changing the amounted weight of the weights, to facilitate the carriage of the dumbbell itself by eliminating the weight while avoiding the accident of drop in comparison with iron dumbbells, to handle the dumbbell easily for the child or the female, to improve decorativeness and to remarkably improve merchandise value. SOLUTION: A bar-shaped body 2, for which a handle part 1 is formed, is formed into a hollow body made of synthetic resin. One or plural weights 2 formed into hollow bodies made of synthetic resin are freely attachably and detachably provided at both the terminal parts of the bar-shaped body 2. Injection holes for replenishing weight members 4 such as water, sand or coins are formed respectively at the bar-shaped body 2 and the weights 3, and caps 6 for closing are freely attachably and detachably added to the injection holes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dumbbell in which weights are provided at both ends of a rod-shaped body having a handle portion, and more specifically, the weight of the dumbbell is avoided while avoiding a fall accident as compared with an iron array. Is separated from the rod-shaped body to make it compact, the weight and the rod-shaped body are made hollow, and the weight member is removed from the inside to reduce the weight, making it easy to carry and handle the dumbbells, easy for children and women to handle, and more decorative. , The weight of the weight can be changed in various ways, and the weight can be distributed around the rod-shaped body in a well-balanced manner, which is effective for dumbbell exercises and the like, and is related to a technique for significantly increasing the commercial value thereof.

[0002]

2. Description of the Related Art Conventionally, a dumbbell in which a weight is provided at both ends of a bar-shaped body having a handle is made of iron (iron array), but the weight cannot be changed. However, it is necessary to prepare various dumbbells having different weights, and dropping a heavy iron array may damage the toes and the hit part, making it difficult for children and women to handle. In addition, when carrying out dumbbells as outdoor equipment, or in training dumbbell exercises using dumbbells, it is heavy and troublesome to carry the dumbbells to the spot.

[0003]

In order to solve such a problem, as shown in FIG. 4, a hollow body is made of synthetic resin, and water or sand is poured into the inside as necessary. Although a dumbbell to be filled with is considered and proposed, as described above, the hollow body made of synthetic resin has a bulky structure in which the rod-shaped body 2 on which the handle portion 1 is formed and the weight 3 are integrated. Moreover, if a crack or perforation is formed in one place, the watertightness of the whole is impaired, the dumbbell is destroyed by a small scratch, and the insides of the rod-shaped body 2 and the weight 3 are in communication with each other. When changing the weight of the weight 3 by changing the filling amount of the weight member such as water or sand to be filled in
There is a problem in that the weight member flows inside the hollow rod-shaped body 2 and the weight 3, the weight 3 cannot be arranged in a well-balanced manner around the rod-shaped body 2, and a feeling of strangeness occurs in dumbbell exercises. In the figure, 6 is a cap.

The present invention has been made in view of such a problem, and an object thereof is to attach and detach the weight of the dumbbell to the rod-shaped body while avoiding a fall accident as compared with the iron array. In addition, by removing the weight member, the weight can be almost lost, and it is easy to take the dumbbell outdoors or carry it,
It is easy for children and women to handle, and the rod-shaped body and the weight are separate members and are made of synthetic resin so that the rod-shaped body and the weight member inside the weight do not communicate with each other and flow. The weight members can be arranged in a well-balanced manner around the circumference of the rod, which is good for dumbbell gymnastics in this respect, and the rod-shaped body and the weight can be made different colors by forming the rod-shaped body and the weight separately. The aim is to provide a dumbbell that is easy to make, enhances the decoration, and significantly increases the commercial value.

[0005]

According to a first aspect of the present invention, one or a plurality of synthetic resin hollow bodies are provided at both ends of a synthetic resin hollow rod-shaped body 2 having a grip portion 1. 3, the rod-shaped body 2 and the weight 3 are detachably provided.
Each of them is provided with an injection port 5 for filling the weight member 4 such as water, sand or coin, and a cap 6 for closing is detachably attached to the injection port 5. .

According to the second aspect of the invention, the male screw 11 is formed on one end of the rod-shaped body 2 in the axial direction, and the injection port 5 is formed on the end face of the rod-shaped body 2 in the axial direction.
1 is a cylindrical shape having a bottom and is characterized by being screwed with a cap 6 which comes into contact with the end surfaces of the weights 3 to prevent the weight from coming off. In the invention of claim 3, the weight 3 is formed in an annular shape, and the inner peripheral surface of the central hole 8 of the weight 3 and the end peripheral surface of the rod-shaped body 2 are each provided with a corner portion 8 for preventing rotation.
a and 2a are formed.

According to a fourth aspect of the invention, the rod-shaped body 2 and the weights 3 are colored in different colors. In the structure according to claim 1, the rod-shaped body 2 and the weight 3 which are made of synthetic resin and are hollow and have the handle portion 2 are formed separately, and the weight 3 is removed from the rod-shaped body 2 to form the weight member 4. The weight member 4 filled in the rod-shaped body 2 and the weight 3 communicates with the dumbbell A and the weight 3 by communicating with the dumbbell A and the weight 3. Without changing the weight, the weight can be changed by changing the amount of the weight member 4, and the weight can be distributed to the peripheral portion of the rod-shaped body 2 in a well-balanced manner, which is effective in dumbbell exercises. Is equipped with one or more weights 3 and 3 detachably,
One weight 3 is filled with the weight member 4 and the other weights 3 are in a hollow state, all the weights 3 are filled with the weight member 4, and the outer weight 3 among the plurality of weights 3. It is possible to obtain various states such as a state in which the weight member 4 is filled with the weight member 4 to increase the rotation moment, and this is also advantageous in dumbbell exercises.

According to the second aspect of the invention, the bottomed cylindrical cap 6 can be effectively utilized to favorably prevent the weights 3 from coming off. In the configuration of claim 3, the corner surface portion 8a of the weight 3 is brought into contact with the corner surface portion 2a of the rod-shaped body 2, and the rotation of the weight 3 is properly prevented, which is effective for dumbbell exercises. In the structure of claim 4, the hollow rod-shaped body 2 and the weight 3 are colored in different colors, and one or a plurality of weights 3 are attached to both ends of the rod-shaped body 2, respectively. The appearance can be enhanced, and when such dumbbell A is placed on a wooden floor, on a table, etc., the decorativeness can be greatly enhanced, and dumbbell A can be used as an interior article. The product value can be significantly increased.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 shows an overall perspective view, and FIG. 2 shows a partially exploded perspective view. The dumbbell A is a rod-shaped body 2 and weights 3, 3 attached to both ends of the rod-shaped body 2.
It is composed of The rod-shaped body 2 and the weight 3 are formed as hollows made of synthetic resin such as vinyl chloride. Such molding is performed by, for example, a blow molding method.

An embossment 9 is formed on the surface of the intermediate portion of the rod-shaped body 2 to prevent it from slipping, and a handle portion 2 is formed. On both sides of the handle part 2, there are annular stoppers 10,
10 is formed so that the weights 3 can be positioned. The handle portion 2 is formed in a cylindrical shape, and the end side portion of the stopper 10 is an octagonal rectangular tube portion 12
The weight 3 is formed to prevent the weight 3 from rotating. A male screw 11 is formed further toward the end of the rectangular tube portion 12. Then, one end surface of the rod-shaped body 2 is opened to form an injection port 5, and inside the rod-shaped body 2 having a bottomed cylindrical shape, water, sand, coins or the like as the weight member 4 is poured. I am able to do so.

A cylindrical portion is formed in the weight 3 formed in the hollow body to form an injection port 5, so that the weight member 4 can be injected into the weight 3.
Then, the inner lid 13 is fitted into the injection port 5, and the cap 6 is screwed into the male screw 11 formed on the outer surface of the tubular portion,
The inlet 5 can be closed. Furthermore, the weight 3 is formed in an annular shape. The inner peripheral surface of the central hole 8 of the weight 3 and the outer surface of the square tube portion 12 are formed with rotation preventing square surface portions 8a and 2a, respectively, and the weight 3 is inserted into the square tube portion 12 of the rod-shaped body 2. In case of the corner surface 8
The a and 2a are in contact with each other so that the weight 3 can be prevented from rotating.

Then, water, sand or coins are poured into the hollow rod-shaped body 2 and the weights 3 ..., The inner lid 13 and the cap 6 are put, and two weights 3 are provided on both sides of the rod-shaped body 2. 3 is attached and fixed, and dumbbell A is assembled. In this way, the rod-shaped body 2 and the weight 3 which are made of synthetic resin and are hollow are formed separately, and the weight 3 is removed by removing the weight 3 from the rod-shaped body 2 and removing the weight member 4, It can be made compact, which is advantageous in transporting and handling the dumbbell A. When used, the rod-shaped body 2 and the weight 3 are formed as separate bodies.
The weight member 4 filled in the inside of the rod does not communicate with each other, and while the weight of the rod member 2 can be changed by changing the amount of the weight member 4, the weight can be distributed to the peripheral portion of the rod-shaped body 2 in a well-balanced manner. It becomes effective in. Furthermore, of the weights 3 to be mounted on one side,
One weight 3 is filled with the weight member 4 and the other weight 3 is in a hollow state, two weights 3 are filled with the weight member 4, and the outer weight 3 of the two weights 3 is a weight member. It is possible to obtain various stable gravity distribution states such as a state in which 4 is filled to increase the rotation moment, and this is also advantageous for dumbbell exercises.

Moreover, the rod-shaped body 2 and the respective weights 3, 3 are colored in different colors. Specifically, the rod-shaped body 2 is red, the large-diameter weights 3, 3 are red and green, and the small-diameter weight 3 is used. , 3 are colored yellow and blue, and the rod-shaped body 2 and the weight 3 are translucent, and one or more weights 3, 3 are attached to both ends of the rod-shaped body 2, respectively. The dumbbell A can be placed on a wooden floor, a table, etc., and can be used for interior goods, piggy bank, and even for hiking. , Hollow rod-shaped body 2 and weight 3 are filled with beverages such as juice, cold water and tea and used as water bottles, and after drinking at the site,
Dumbbell A can be constructed by adding water from a river, etc.
In addition, it can be used as a float in swimming, and its commercial value can be greatly increased.

In the embodiment, the two weights 3 are attached to the end of the rod-shaped body 2, but the number may be one, or three or more. In the case of using only one, a partition plate may be formed to partition the inside of the weight 3 into a plurality of compartments so that they cannot communicate with each other. In this case, if the injection port 5 is formed at each partition location. Good.

[0015]

According to the present invention, one or a plurality of synthetic resin hollow bodies are detachably attached to both ends of a synthetic resin hollow rod having a handle portion. , Each of the rod-shaped body and the weight is provided with an injection port for filling a weight member such as water, sand or a coin,
Since the closing cap is detachably attached to the inlet, the synthetic resin hollow body and the weight are formed separately, and the weight is removed from the rod to remove the weight member. By removing it, it is possible to make it lightweight and compact, which is advantageous in transporting and handling the dumbbell, but when using it, by separating it, the weight member filled inside the rod-shaped body and the weight is spread over both. The weight can be changed by changing the amount of the weight member without communicating with each other, and the weight can be distributed in a well-balanced manner on the peripheral portion of the rod-shaped body, which is effective in dumbbell exercises. Since one or a plurality of weights are detachably provided, one weight is filled with a weight member and the other weights are in a hollow state. It is possible to obtain various stable gravity distribution states, such as a state in which the weight is filled with a weight member, a state in which the weight member is filled in the outer side of the plurality of weights to increase the rotation moment, and in this respect as well. , There is an advantage that it is advantageous for dumbbell exercises.

According to the second aspect of the present invention, a male screw is formed on one end of the rod-shaped body in the axial direction and an injection port is formed on the end face of the rod-shaped body in the axial direction, and the male screw has a bottomed cylindrical shape. Since the cap that comes into contact with the end face of the weight to prevent the weight from being pulled out is screwed in, there is an advantage that the weight can be favorably prevented from coming off by effectively utilizing the bottomed cylindrical cap.

According to the third aspect of the present invention, the weight is formed in an annular shape, and the inner peripheral surface of the center hole of the weight and the end peripheral surface of the rod-shaped body are respectively provided with corner surface portions for preventing rotation. There is an advantage that the corner surface portion of the rod comes into contact with the corner surface portion of the rod-shaped member, the rotation of the weight is effectively prevented, and it is effective for dumbbell exercises. In the invention of claim 4, since the rod-shaped body and each weight are colored in different colors, the hollow rod-shaped body and the weight are colored in different colors, and one or a plurality of them are provided at both ends of the rod-shaped body. You can enhance the appearance of dumbbells with individual weights, and when you place such dumbbells on a wooden floor or a table, you can greatly enhance the decorativeness and use the dumbbells as an interior product. It has the advantage that it can be used and the product value of dumbbells can be greatly increased.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a partially exploded perspective view.

FIG. 3 is a sectional view.

FIG. 4 is a perspective view of a conventional example.

[Explanation of symbols]

 1 Handle part 2 Rod-like body 3 Weight 3a Square surface part 4 Weight member 5 Pouring port 6 Cap 8 Central hole 8a Square surface part 11 Male screw

Claims (4)

[Claims] 1. One or a plurality of synthetic resin hollow body weights are detachably provided at both ends of a synthetic resin hollow rod body having a grip portion, and each of the rod body and the weight is detachable. A dumbbell characterized in that an injection port for filling a weight member such as water, sand or coin is formed, and a cap for closing is detachably attached to the injection port. 2. A male screw is formed on one end of the rod-shaped body in the axial direction, and an injection port is formed on the end face of the rod-shaped body in the axial direction. The male screw has a bottomed cylindrical shape and abuts on the end face of the weight. The dumbbell according to claim 1, wherein a cap for preventing the pull-out is screwed. 3. The weight is formed in an annular shape, and the inner peripheral surface of the central hole of the weight and the end peripheral surface of the rod-shaped body are respectively formed with rotation preventing corner surface portions. Dumbbell described in 1. 4. The dumbbell according to claim 1, wherein the rod-shaped body and each weight are colored in different colors.