JPS63246181A - Motion training apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is a training device used for power-up training for athletes, training for maintaining and improving the physical strength of sailors, exercise training for disabled people, etc. The present invention relates to a training device in which the resistance force changes according to the speed of the training section so that the speed (x speed) is constant.

[Prior Art] Conventionally, training devices for developing or strengthening the muscles or joints of the body include training devices with constant resistance using weights or water as a load, or training devices with constant resistance using hydraulic or pneumatic pressure. There was also training equipment for exercising.

In recent years, research on training methods has progressed and training methods have diversified, and there has been a demand for training devices that not only strengthen muscle strength but also increase power, such as speed and strength.

The following were considered as exercise training devices for increasing power.

FIG. 2 is a block diagram showing the configuration of a conventional exercise training device. In the figure, 1 is a training arm, 3 is an electromagnetic brake, 4 is a control unit, 8 is a power setting unit such as a keyboard or rotary knob for inputting a desired power value to the control unit 4, and 6 is a rotation of the training arm l. A speed sensor for detecting speed, 7 is a detection wheel that constitutes a rotational speed detection means together with the speed sensor 6. For example, if the speed sensor 6 is a magnetic type, a gear-shaped detection wheel made of a magnetic material, the speed sensor If 6 is a photoelectric type, a detection wheel whose circumferential surface is painted black and white alternately at equal intervals is used.

9 is a grip that a trainee holds during training; 15 is a rotating shaft of an electromagnetic brake 3 to which the training arm 1 is connected at the end and a detection wheel 7 is connected in the middle; 14 is a support for the electromagnetic brake 3; It is a support stand.

Next, the operation of the conventional exercise training device shown in FIG. 2 will be explained. First, a desired power value is set using the power setting section 8. Next, the trainee grasps the grip 9 of the human-powered arm 1 and rotates the training arm 1. Then, the detection wheel 7 rotates, and the rotation speed information of the rotation shaft 15 is manually inputted to the control section 4 by the speed sensor 6.

The control unit 4 controls the brake torque of the electromagnetic brake 3 using this rotational speed information and the power value set above.If the brake torque is 1, the rotational speed is N (rpm), and the number of power value settings is P, To = k P. The control unit 4 controls the electromagnetic brake 3 so that the relational expression of /N is maintained. k in the above formula is a proportionality constant.

Since it is controlled in this manner, the resistance torque when rotating the training arm 1 is equal to the brake torque 1 and is inversely proportional to the rotational speed of the training arm 1, so that a resistance force with constant power is always applied.

[Problems to be solved by the invention] When the previously considered exercise training device described above is used for actual training, the training arm sometimes requires a torque of 100 Kg-m or more as a resistance force. Yes, and it must change depending on the set power value and the rotational speed of the training arm 1. Therefore, the problem is that the electromagnetic brake 3 needs to have an extremely large brake torque and a very wide variation range, and the control section 4 also needs to be controlled over a wide range and also needs to control an extremely large amount of electric power. There was a point. These problems have prevented the practical use of the exercise training device, and it has not been commercialized to date.

The present invention was made to solve these problems, and an object of the present invention is to obtain a compact and inexpensive exercise training device for power training using a small electromagnetic brake.

[Means for Solving the Problems] The exercise training device according to the present invention includes a training arm that applies a resistance force to the trainee on the deceleration side shaft of the deceleration means, and a brake means and rotational speed detection means on the high speed side shaft. This is a configuration in which it is provided.

[Function] In the exercise training device of the present invention, the training arm is provided on the deceleration side shaft of the deceleration means, and the brake means is provided on the high speed side shaft of the deceleration device. When the rotation ratio is n:l, the resistance torque of the training arm is n times the brake torque of the brake means, so the brake means can be made smaller. Also,
By using a continuously variable transmission (reduction gear) or the like and changing the reduction ratio of the reduction means, the brake torque of the brake means does not need to have a particularly wide range of change.

[Example 1] Fig. 1 is a block diagram showing the configuration of an exercise training device which is an embodiment of the present invention. The same or equivalent parts as in Fig. 2 are indicated using the same reference numerals, and the details thereof are not explained. Explanation will be omitted. In the figure, reference numeral 2 denotes a speed reducer which is speed reduction means, and for example, a mechanical stepless type or one having several speed reduction ratios can be used.

10 is a speed change lever that changes the reduction ratio. Above speed reducer 2
The training arm 1 is connected to the deceleration side shaft 12 via a one-way clutch 11, and the high speed side shaft 13 is provided with a detection wheel 7 which is an element of rotational speed detection means, and an electromagnetic brake which is a braking means. 3 are connected. A starting motor M is connected to the rotating shaft of the electromagnetic brake 3.

6 is a speed sensor which is a rotational speed detection means, 8 is a power setting section, and 4 is a control section. Based on the power value set in the power setting section 8 and the rotational speed information from the speed sensor 6, Control is performed according to the rotational speed so that the power value of the brake torque of the brake 3 is maintained at a set value, and the starting motor M is also controlled.

The one-way clutch 11 is a clutch that connects the training arm l and the speed reducer 2 only in one direction of rotation, and the direction of rotation of the connection can be freely switched using an attached switching lever.

Next, the operation of the exercise training device shown in FIG. 1, which is an embodiment of the present invention, will be explained.

First, the power value is set using the power setting section 8, and the speed change lever lO of the reduction gear 2 is set to an arbitrary reduction ratio fα that suits the purpose of training, and when the power switch is turned on, the starting motor M is activated by the control section 4. The electromagnetic brake 3 degree detecting wheel 7 and speed reducer 2 are rotated by being energized and starting to rotate. At this time, the training arm l is the one-way clutch 11
Because of this, it does not rotate. Next, the trainee grips the grip 9 and rotates the training arm l in a predetermined direction, and when the rotational speed reaches a predetermined value, the starting motor M is de-energized by the control of the control 3II section 4 and becomes in a free state. Become. The control unit 4 operates the electromagnetic brake 3 according to the speed information from the speed sensor 6.
Since the brake amplifier 5 is controlled and the excitation current of the electromagnetic brake 3 is controlled so that the brake torque always maintains the set power value, even if the trainee changes the rotational speed of the training arm, the power value remains constant. The resistance torque changes so that the value remains constant, and speed x resistance torque = power is held constant. Therefore, the resistance torque of the training arm l has a value inversely proportional to its rotational speed.

As described above, the exercise training device of the present invention allows the trainee to continue training by receiving a resistance force having a constant power value regardless of the rotational speed of the training arm 1. If the trainee relaxes and lowers the rotational speed, he or she will be able to receive a larger force, and if the trainee increases the rotational speed, the resistance force will become smaller. Therefore, trainees can continue training for a long time without getting bored, and can create their own programs (for example, slow at first, fast in the middle,
It is possible to obtain an exercise training device that allows you to train by repeating the exercise slowly at the end.

In addition, since the training arm 1 is connected to the deceleration side of the reducer 2 and the electromagnetic brake 3 is connected to the high speed side, the electromagnetic brake 3
The brake torque of the device can be changed to a very small value compared to the conventionally considered device, and the range of change can also be small because the reduction ratio of the reducer 2 is set according to the training, and the small electromagnetic brake 3 can be used.

Note that the grip 9 of the training arm l of the exercise training device shown in FIG. 1 can be replaced in various ways depending on the training area.

The starting motor M is provided to prevent the trainee from sometimes being unable to rotate the training arm 1 due to extremely large resistance torque while the rotational speed is low at the initial stage of starting.

When starting the exercise training device, the brake torque of the electromagnetic brake 3 is set to zero, and the brake amplifier 5 is activated when the rotational speed reaches a predetermined speed, or after a predetermined time has elapsed since the power switch is turned on. Although it is possible to generate a resistance torque by adjusting the resistance torque, the control becomes complicated and there are limitations in use.

[Effects of the Invention] As explained above, the present invention has an exercise training device in which the training arm is connected to the deceleration side shaft of the deceleration means, and the brake means and the rotational speed detection means are connected to the high speed side shaft. The braking torque required by the braking means is very small, and the range of change in the torque is not particularly wide, so it has the excellent effect that the entire device can be put to practical use in a compact and inexpensive manner. be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an exercise training device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional exercise training device. In the figure, l...training arm, 2...reducer, 3
...Electromagnetic brake, 4...Control unit, 5...Brake amplifier, 6...Speed sensor, 7...Detection wheel, 8...Power setting unit, 9...Grip, 10 Gear shift lever, 11... One-way clutch, 12... Deceleration side shaft, 13... High speed side shaft, 14... Support stand, 15
...rotating shaft, M...starting motor. In each figure, the same reference numerals indicate the same or equivalent parts. Patent Applicant Sakai Medical Co., Ltd. Agent Patent Attorney Shima 1) Golden brother 1 Figure 1: Training arm 11: -Rikisho Kura, V+2: =yf;c far&
i:2: Nfx＊ilriglaze3:t'! Go to play 13: &Achievement 11 Glaze 6: Lost Ensa 14: Support stand 72, N*out, ;1
'2, E) M: Start motor 9: GREEN, 2 P10: Change lever

Claims (3)

[Claims] (1) In a training device for developing or strengthening the muscles or joints of the body by overcoming a resistance force, a training arm that provides the resistance force to the trainee is provided on the deceleration side shaft of the deceleration means; An exercise training device characterized in that a brake means and a rotational speed detection means are provided on the high-speed side shaft. (2) The exercise training device according to claim 1, wherein an electromagnetic brake is used as the braking means. (3) The exercise training device according to claim 1, characterized in that a starting motor is connected to the rotating shaft of the brake means.