JPH08332245A - Dumbbell of weight increasing and decreasing mechanism - Google Patents

Abstract

PURPOSE: To provide a dumbell of a weight increasing and decreasing mechanism which can increase and decrease the weight of the dumbbell freely, making use of attraction force of a ferrite magnet, and trains a hand and an arm and promotes circulation of the blood. CONSTITUTION: A dumbbell body 1 consisting of a ferrite magnet 2 being a columnar body where many small projections 4 are provided all over the periphery and a plurality of auxiliary dumbbells la consisting of ferrite magnets la being columnar bodies separate from this constitute a set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dumbbell mainly composed of a ferrite magnet (permanent magnet), which allows the weight of the dumbbell to be freely increased or decreased by utilizing the attractive force of the ferrite magnet, and the blood circulation in the hand by a magnetic field. The present invention relates to a dumbbell of a weight increasing / decreasing mechanism that can be expected to promote the effect of.

[0002]

2. Description of the Related Art Conventionally, dumbbells are provided with weights fixed to both ends of a grip so that the dumbbell can be gripped by a hand, and different weights are provided depending on age and physical strength. recent years,
Linda-shaped dumbbells with a grip are provided, and a different version of the conventional dumbbell image is provided.
In addition, a dumbbell configured so that the weights provided at both ends of the grip can be freely increased and decreased has been provided. In addition, Japanese Patent Application No. 6- and Japanese Patent Application No. 6- filed by the applicant.
One cylindrical dumbbell is provided as in 32072.

[0003]

However, these dumbbells are intended for the training of wrists and arms, the enhancement of grip strength, etc., and were used for basic sports training.
In addition, these dumbbells have to be selected from dumbbells having different weights depending on age and strength, so that it is inconvenient to prepare several types of dumbbells having different weights. In order to remedy the above-mentioned drawbacks, Japanese Patent Application No. 6-filed previously by the applicant of the present invention provides a large number of small projections on the entire circumferential side of a cylindrical dumbbell to apply the acupressure of the palm, and to enclose the spherical body inside. The sound was used to stimulate the brain, but to increase or decrease the weight of the dumbbell, several different weights had to be prepared as in the past. The present invention is a set of a dumbbell made of a ferrite magnet and a plurality of auxiliary dumbbells for increasing and decreasing the weight of the dumbbell, and the magnetic force of the dumbbell body is used to attract the auxiliary dumbbell.
It is an object of the present invention to provide a dumbbell capable of easily increasing or decreasing the weight.

[0004]

In order to achieve the above object, the present invention provides a dumbbell body 1 composed of a columnar ferrite magnet 2 having a large number of small protrusions 4 on the entire circumferential side thereof, and a columnar body separately therefrom. This is a set of a plurality of auxiliary dumbbells 1a composed of ferrite magnets 2a. Further, according to the present invention, the dumbbell body 1 and the auxiliary dumbbell 1a having a strong attracting force can be obtained by covering the dumbbell body 1 and the auxiliary dumbbell 1a with the cylindrical yoke 3 made of a magnetic material such as iron having one end opened. If a synthetic resin material or a cloth material is covered instead of the yokes 3 and 3a of the cylindrical body, a dumbbell with a good feel is obtained. The auxiliary dumbbell 1a attracted to the dumbbell body 1 on which the cylindrical yoke 3 made of a magnetic material such as iron is covered may be a magnetic material such as iron. Alternatively, the dumbbell body 1 may be composed only of a magnetic material such as iron, and the auxiliary dumbbell 1a may be a ferrite magnet or a ferrite magnet covered with a magnetic material such as iron.

[0005]

When the present invention constructed as described above is used, it is as follows. As shown in FIG. 8, the dumbbell body is grasped with one hand, and the upper arm or the entire arm is moved up and down to train the muscular strength of the arm, hand and wrist. The number of auxiliary dumbbells 1a can be increased or decreased as needed to exercise according to the strength of each arm.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of the present invention, FIG. 2 is a longitudinal sectional view of the present invention,
3 is a second embodiment of the present invention, FIG. 4 is a vertical sectional view of the second embodiment of the present invention, FIG. 5 is a vertical sectional view of the third embodiment of the present invention,
6 is a vertical sectional view of a fourth embodiment of the present invention, FIG. 7 is a vertical sectional view of a fifth embodiment of the present invention, and FIG. 8 is a view showing a usage state of the present invention.

Reference numeral 1 in the drawing denotes a dumbbell body, a large number of small projections 4 are provided on the entire surface of the dumbbell body 1 on the circumferential side, and the whole is made up of a ferrite magnet 2. The small protrusions 4 are provided so as not to slip and fall from the hand when the dumbbell body is grasped with one hand, and at the same time, the small protrusions 4 stimulate the palm and improve the blood circulation by the ferrite magnet 2 as well as the acupressure effect. The effect is obtained.

Reference numeral 1a denotes an auxiliary dumbbell, which is composed of a columnar ferrite magnet 2a for increasing the weight of the dumbbell main body 1. As shown in FIG. Corresponding to adsorption. Therefore, the weight of the dumbbell body 1 can be freely changed by increasing or decreasing the number of auxiliary dumbbells. That is, if the weight of the dumbbell body 1 is small and the number of the auxiliary dumbbells 1a is increased as the age increases, the dumbbell body 1 can be applied to a wide age group.

Reference numeral 3 denotes a cylindrical yoke made of a magnetic material such as iron and having one end opened, and when the yoke 3 and the dumbbell body are provided with a gap a as shown in FIGS. The attraction force of the ferrite magnet 1 becomes very strong. Therefore, when the weight of the auxiliary dumbbell 1a is heavy, if the yoke 3 is covered on the dumbbell main body 1, the auxiliary dumbbell 1a is strongly attracted, so that the dumbbell main body 1 is moved up and down violently.
Even if you swing it around, it will not fall apart.

The small protrusions 4 are provided only on the entire surface of the dumbbell body 1 on the circumferential side. The size of the protrusions is not specific, and when the dumbbell body 1 is gripped by hand as shown in FIG. It is desirable that the palm has a moderately pleasant sensitivity and irritation. If the dumbbell body 1 is composed of only the ferrite magnet 2, the dumbbell body 1 is provided on the entire circumferential side of the dumbbell body 1 and the yoke is attached to the dumbbell body 1. In the case where 3 is covered, it is provided on the entire circumferential side of the yoke 3.

According to the present invention, as in the second embodiment, a dumbbell body 1 made of a ferrite magnet 2 and an auxiliary dumbbell 1a are covered with cylindrical yokes 3 and 3a made of a magnetic material such as iron with one end open. Then, as shown in FIG. 4, the magnetic force lines (shown by dotted lines) are gathered by the yoke 3, so that the suction force becomes very strong, the auxiliary dumbbell 1a is surely sucked by the dumbbell body 1, and the auxiliary dumbbells 1a are plurally attached. Even if you install them individually, they will not fall. Also, as shown in FIGS. 5 and 6,
When the dumbbell body 1 and the auxiliary dumbbell 1a are covered with a covering material 3b such as a synthetic resin or cloth, the gripping gap does not feel cold, and the dumbbell can be used without resistance even in the cold season. The auxiliary dumbbell 1a does not necessarily need to use the ferrite magnet 2a, and as long as the dumbbell body 1 is a ferrite magnet,
The magnetic material auxiliary dumbbell 5a may be used. Alternatively, the dumbbell body 1 may be composed of only the magnetic material 5 such as iron. In this case, if the auxiliary dumbbell 1a is the ferrite magnet 2a, the magnetic force of the auxiliary dumbbell 1a causes the dumbbell body 1 to be attracted.
A plurality of auxiliary dumbbells 1a composed of ferrite magnets 2a can be connected to the dumbbell body 1 in series.

[0012]

The present invention is a dumbbell configured as described above, and the use of this dumbbell has the following effects.
The dumbbell body is a thick cylinder, so if you grab it,
Since the force is applied to the entire fingers of the book, it is possible to develop grip strength.
The dumbbell body has many small protrusions on the entire circumference, so when you grasp it, the small protrusions stimulate the acupoints of your palm, and the magnetic field effect of the ferrite magnet promotes blood circulation in your hands, arms, and overall body. Has the effect of An auxiliary dumbbell is provided to increase or decrease the weight according to the age and physical strength. The increasing / decreasing means uses the attractive force of the magnet, so if there is one dumbbell body and multiple auxiliary dumbbells , Can be used regardless of physical fitness. Further, since the present invention is a thick columnar body, it is particularly effective in training grip strength and is useful for training in which the cylindrical force of baseball is applied. Not only useful, it is the perfect instrument for training the hands and arms that are the basis of all sports.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of the present invention.

FIG. 3 is a perspective view of a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of a second embodiment of the present invention.

FIG. 5 is a vertical sectional view of a third embodiment of the present invention.

FIG. 6 is a vertical sectional view of a fourth embodiment of the present invention.

FIG. 7 is a perspective view of a fifth embodiment of the present invention.

FIG. 7 is a diagram showing a usage state of the present invention.

[Explanation of symbols]

 1 dumbbell body 1a auxiliary dumbbell 2 ferrite magnet 2a ferrite magnet 3 yoke 3a yoke 4 small protrusion 5 magnetic material dumbbell 5a magnetic material auxiliary dumbbell a gap

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[Procedure amendment]

[Submission date] December 11, 1995

[Procedure Amendment 1]

[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]

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

FIG. 2 is a vertical sectional view of the present invention.

FIG. 3 is a perspective view of a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of a second embodiment of the present invention.

FIG. 5 is a vertical sectional view of a third embodiment of the present invention.

FIG. 6 is a vertical sectional view of a fourth embodiment of the present invention.

FIG. 7 is a perspective view of a fifth embodiment of the present invention.

FIG. 8 is a diagram showing a usage state of the present invention.

[Explanation of symbols] 1 dumbbell body 1a auxiliary dumbbell 2 ferrite magnet 2a ferrite magnet 3 yoke 3a yoke 4 small protrusion 5 magnetic dumbbell 5a magnetic auxiliary dumbbell a gap

Claims (5)

[Claims] 1. A dumbbell body composed of a cylindrical ferrite magnet having a large number of small projections on the entire circumferential side, and a plurality of auxiliary dumbbells composed of a cylindrical ferrite magnet, which are separate from the main body. Dumbbell with a characteristic weight increase / decrease mechanism. 2. The dumbbell main body and the auxiliary dumbbell are covered with a yoke of a cylindrical body made of a magnetic material such as iron with one end opened, and a large number of protrusions are provided on the entire circumferential side of the yoke of the cylindrical body provided in the dumbbell main body. The dumbbell of the weight increasing / decreasing mechanism according to claim 1, wherein the dumbbell is provided. 3. A dumbbell of a weight increasing / decreasing mechanism, characterized in that a synthetic resin material or a cloth material is provided on the dumbbell body and the peripheral side surface of the auxiliary dumbbell. 4. The dumbbell of a weight increasing / decreasing mechanism according to claim 1, 2 or 3, wherein the auxiliary dumbbell is a magnetic dumbbell of iron or the like. 5. The dumbbell of a weight increasing / decreasing mechanism according to claim 1, wherein the dumbbell body is a magnetic material such as iron and the auxiliary dumbbell is a ferrite magnet.