JP2002263234A - Underwater muscle training device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underwater muscle training device usable by a large number of users. SOLUTION: In this underwater muscle training device arranged in the end of a pool, water flow giving a load to the user is formed by means of a stream generator 16 including an axial flow pump 20. The direction of the stream generator 16 is oscillated by means of a driving motor 48 and a link mechanism 50. By this oscillation, the stream can be formed over a wider range, so that usage by a large number of users can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater strength training apparatus for applying a load to a user in a water tank by a water flow to train the user's strength.

[0002]

2. Description of the Related Art In recent years, it has been recognized that underwater exercise, which gives a user a load by a water flow, is effective for strengthening the muscle strength of athletes and for rehabilitation of dysfunctional persons. Also, sports clubs and the like for general users have adopted training and slimming programs using water flow.

[0003]

In the conventional underwater strength training apparatus, the direction of the water flow in the horizontal plane is constant, so that many persons cannot use it at once.

[0004] The present invention has been made to solve the above-mentioned problem, and has as its object to make it available to more people at once.

[0005]

In order to solve the above-mentioned problems, an underwater strength training apparatus according to the present invention oscillates a water flow, that is, changes the direction of the water flow right and left in a horizontal plane. As a result, more users can receive the water flow. On the other hand, it is known that the effect of the strength training increases when the load due to the water flow is changed in intensity or repeatedly generated and stopped. This is because the stoppage of the water flow induces the posture and movement of the body that attempts to withstand the load up to now, and the opposite movement, whereby the muscles of more parts can be trained. For a single user, the water flow oscillates,
The load will change intermittently or periodically,
You can do more efficient training.

[0006] The swing of the water flow can be achieved by changing the direction of the water flow generating means for generating the water flow.

[0007]

Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of the apparatus of the present embodiment. Support shaft 15 of frame 14 installed on wall 12 of pool 10
A water flow generator 16 is supported rotatably. The operation of the water flow generator 16 includes an electric motor 18 and an axial flow pump 20, and its operation is controlled by a control panel (not shown) fixed to the frame 14 or the like.

FIG. 1 shows a cross section of an axial flow pump 20. The impeller 28 is driven by the electric motor 18 via the pump shaft 30. The impeller 28 is surrounded by a torso 32, and the torso 32 has a curved torso 34.
Are connected. The pump shaft 30 is supported by a bearing 38 provided on a column 36 extending from the body 32.
A guide plate 40 for smoothly changing the direction of the water flow is provided in the curved cylinder 34.

When the impeller 28 is driven by the electric motor 18, the pool 1 is moved from the suction port 42 below the water flow generator 16.
Zero water is sucked in, the water rises in the body 32, and is then bent along the curved body 34 in a direction perpendicular to the pool wall 12 and spouts out from the discharge port 44 as a water flow F. The user places his or her body in the gushing water stream and performs training.

Further, a water flow oscillating mechanism 46 for changing the direction of the water flow generator 16 and oscillating the direction of the water flow is provided. The water flow swing mechanism 46 includes a drive motor 48 and a link mechanism 50 that couples the drive motor and the water flow generator 16. The link mechanism 50 converts the rotational motion of the drive motor 48 into a swinging motion of the water flow generator 16.

FIG. 2 is a view showing the link mechanism 50.
The crank 52 is rotated by the drive motor 48. The rotation of the crank 52 is transmitted to a lever 56 via a rod 54. The radius of the crank 52 and the radius of the lever 56 are appropriately determined, and the rotation of the crank 52 causes the lever 56 to swing in the range of the angle a. As a result, the entire water flow generator 16 swings, and the direction of the water flow F swings in a horizontal plane. The lever 56 is actually disk-shaped, the support shaft 15 is rotatably engaged with the center of the disk, and a support bolt 58 for suspending and supporting the water flow generator 16.
Are combined. The control panel is provided with a switch for selecting the operation mode and the strength of the water flow. In the operation mode,
There is a swing mode in which the direction of the water flow fluctuates, and an operation mode in which the direction of the water flow is constant. The operation mode can be switched by operating the control panel.

Since the direction of the water flow F changes, a plurality of persons can use the water stream F at the same time. Further, for one user, the water flow F periodically comes to the user, so that the strength of the water flow or the presence or absence of the water flow is repeated. As described above, it may be more effective training to receive a water flow having repeated strengths and the like than to receive a water flow having a constant strength, and the direction of the water flow F may be changed as in the present embodiment. By moving, the training effect can be enhanced.

When the direction of the water flow F is to be fixed,
The operation mode is switched so that the direction is constant. The drive motor 48 is stopped, and the swing motion of the water flow is stopped. Further, the drive motor 48 is provided with a brake for preventing rotation of the rotor when stopped, and the stopped position is maintained, whereby the direction of the water flow F is fixed.

In order to adjust the direction of the water flow while keeping the direction constant, the crank 52
A torque limiter can be provided between the motor and the motor shaft. The torque limiter is a mechanism that fixes the crank and the motor shaft when a torque less than a predetermined value is applied, and performs relative motion when a torque greater than a predetermined value is applied. Specifically, this can be achieved by using a latch mechanism or the like. In a state where the operation mode is set to a mode in which the direction of the water flow is constant, when the user holds the water flow generator 16 and applies a force so as to have a desired direction, the torque limiter operates to change the direction of the water flow generator 16. be able to.

According to the above-described embodiment, a large number of people can be trained at a time by swinging the direction of the water flow. In addition, the torque limiter mechanism can adjust the direction of the water flow F, that is, the direction in which the direction of the water flow is fixed, and can adjust the direction of the center of the swing range of the water flow in the mode of performing the swing. Further, even if an overload is applied during the swinging operation, the torque limiter mechanism operates to protect the motor and the link mechanism.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an underwater strength training apparatus of the present embodiment.

FIG. 2 is an explanatory view of a main part of a water flow swinging mechanism.

[Explanation of symbols]

10 pools, 12 pool walls, 16 water flow generators, 1
8 motor, 20 axial pump, 28 impeller, 32
Body, 34 curved body, 40 guide plate, 42 suction port, 44
Discharge port, 46 water flow swing mechanism, 48 drive motor, 5
0 link mechanism, 52 crank, 54 rod, 56
lever.

Claims (2)

[Claims] An underwater muscle training apparatus for applying a load to a user in a water tank by a water flow to fortify a user's muscular strength, comprising: a water flow generating means for forming a water flow discharged toward the user; , A water flow swinging means for oscillating the direction of the water flow right and left. 2. The underwater strength training device according to claim 1, wherein the water flow swinging unit changes the direction of the water flow generation unit to swing the water flow.