JPH0253067B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bell used as an exercise tool.

[Prior art]

Conventional cast iron bells are used to train the muscles of the wrists, arms, shoulders, etc. by grasping the central part of the bell, but since it is a rigid body, the bell is held at one end and the tip is moved in a certain rhythm. When the movement of raising and lowering is performed continuously, the weight of the bell is strongly applied to the joint, causing pain on the ulnar side of the wrist. Also,
When running while holding the central part of the bell, the impact of landing increases the weight load of the bell on the wrists, arms, shoulders, etc., making arm swing movements stiff. Therefore, conventional cast iron bells are not suitable for use in gymnastics or running.

In addition, conventional cast iron bells not only do not fit well in the hand, but they can also cause injury when placed on the hand, damage when placed on objects, and give the user a cold sensation in the winter, which discourages their use. Make me hesitate.

[Purpose of the invention]

The present invention was made in view of such actual circumstances,
The main purpose is to create a flexible bell that can be used for various exercises such as gymnastics, running, etc., without applying strong impact force to the wrists, arms, shoulders, etc., and providing a moderate cushioning effect. The aim is to provide

[Structure of the invention]

In order to achieve this object, the present invention fills a flexible cylindrical body of a predetermined length made of an elastic material such as rubber with a lightweight object that can be bent in the radial direction in the middle part of the cylindrical body. The purpose is to provide a rod-shaped flexible bell made by filling both ends with a pair of heavy objects and closing both ends of the same cylindrical body.

[Action/effect of the invention]

According to the elastic bell having such a structure, by changing the total weight of the objects filled inside the cylinder, it is possible to provide flexible bells of various weights with a predetermined size that is optimal for use. (a) If the user selects a flexible bell with a weight that is optimal for his/her physique, grasps one end of the bell, and repeatedly swings the tip of the bell up and down while moving the elbow and shoulder; At the end of each swing-up and swing-down motion, the tip of the bell flexes flexibly, so the weight is not concentrated on the joints, and the entire muscles of the forearm, upper arm, shoulder, etc. are stimulated appropriately. It was confirmed that they felt less fatigued.

(b) When running while holding the central part of the flexible bell with the optimum weight mentioned above, the impact upon landing will not be transmitted strongly to the shoulders, arms, wrists, etc. due to the cushioning effect of the flexible bell. , it was confirmed that the arm swinging motion did not become stiff.

(c) From the above usage results, the flexible bell of the present invention can be used for various exercises such as gymnastics and running without causing problems due to joint fatigue. can promote muscle development.

In addition, since the flexible bell of the present invention is covered with a cylindrical body made of an elastic material such as rubber, it does not give a cold feeling to the hands when used, and the cylindrical body functions as a shock absorber, so the hands and hands are protected. Even if it hits an object, the impact is softened and there is almost no damage to hands or objects.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. The rod-shaped flexible bell shown in FIG.
A core body 10 of a predetermined weight with a predetermined length made by stacking a plurality of disks 11a and 11b in the thickness direction inside the core body 10.
The cylindrical body 21 is filled with the same material, and both ends of the cylindrical body 21 are closed with a pair of soft synthetic resin caps 22, 22. The cylindrical body 21 is a short cylindrical body with a circular cross section, and its length and diameter are determined so that it is easy for the user to grasp and use by swinging it around, and its wall thickness is determined to be appropriate depending on the weight of the core 10 filled inside. It is designed so that a certain amount of deflection occurs. The plurality of discs 11a superimposed on the middle part of the core body 10 are lightweight discs made of wood, synthetic resin, or light metal, and the concentric body 1
A pair of multiple discs 11b superimposed on both end portions of the cylinder 0 are heavy discs made of heavy metals such as iron and lead, and these discs 11a and 11b have their respective abutting surfaces inside the cylinder 21. They are each filled in such a way that they can be moved slightly in the radial direction. The pair of caps 22, 22 are fixed to both ends of the cylindrical body 21 with an adhesive, and movement of the core body 10 in the axial direction is restricted by their respective inner wall surfaces.

The flexible bell constructed in this way can be made flexible with various weights without changing the length and diameter of the cylinder 21 by changing the total weight of the discs 11a, 11b filled inside the cylinder 21. When used as a bell, when the center or one end of the cylinder body 21 is grasped and shaken up and down, the discs 11a and 11b constituting the core body 10 move in the radial direction. By slightly moving the cylindrical body 21, both end portions or the tip portion of the cylindrical body 21 can be bent, thereby imparting appropriate elasticity and a cushioning effect to the user's wrist. Furthermore, since the cylindrical body 21 made of an elastic material such as rubber covers the core body 10, the core body 10 does not come into direct contact with the hand during use, so the hand does not feel cold, and even if the body touches the hand or an object, the shock is absorbed. It is absorbed by the buffering effect of the cylinder 21 and does not cause damage to hands or property.

FIG. 2 shows a modification of the flexible bell. In this elastic bell, disks 11a and 11b forming the core body 10 are placed inside a coil spring 23 inserted into a cylindrical body 21. A flexible bell having such a structure can also provide substantially the same effects as described above. In each of the embodiments shown in FIGS. 1 and 2, a plurality of wooden or synthetic resin materials are used as lightweight objects filled in the middle part of the core body 10 and capable of allowing the concentric body 10 to deflect in the radial direction. An example was explained in which the disk 11a made of metal or light metal was adopted.
Instead of this, lightweight powder or particles such as sand or light metal may be used, and in such a flexible bell, heavy metal may be used instead of the plurality of heavy metal discs 11b filled in both ends of the core body 10. A manufactured cylindrical block may also be used. Further, in carrying out the present invention, the total weight of the flexible bell may be adjusted by employing disks of different thicknesses as the disks 11a and 11b constituting the core body 10.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the flexible bell according to the present invention, and FIG. 2 is a sectional view showing a modification thereof. Explanation of symbols, 10...core body, 11a, 11b...
...Disc, 21...Cylinder, 22...Cap.

Claims (1)

[Claims] 1. A flexible cylinder of a predetermined length made of an elastic material such as rubber is filled with a lightweight object that can be bent in the radial direction at the middle part of the cylinder, and at both ends. is a rod-shaped flexible body filled with a pair of heavy objects, closing both ends of the cylinder, and positioning and fixing the light object and the heavy object by regulating the axial movement of the light object and the heavy object with the inner walls of the closed ends. Sexual silence. 2 Inside a flexible cylinder of a predetermined length made of an elastic material such as rubber, a plurality of lightweight plates are stacked in the thickness direction in the middle part and a plurality of heavy plates are stacked on both ends. A rod-shaped tube filled with a core of a predetermined length and a predetermined weight, closed at both ends of the cylindrical body, and positioned and fixed by regulating the axial movement of the core with the inner walls of both closed ends. Flexible bell. 3 As the above-mentioned lightweight object that can be bent in the radial direction,
2. The flexible bell according to claim 1, which employs lightweight powder or particles of sand or light metal, and employs a pair of heavy metal blocks as the heavy object. 4. The flexible plate according to claim 2, wherein the lightweight plate material is a disk made of wood, synthetic resin, or a light metal, and the heavy plate material is a heavy metal disk. bell.