JP2753598B2 - Step training machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention implements training in which steps of applying a predetermined load are detected while detecting a pulse of an exerciser. Performs aerobic exercise effectively and safely by giving the optimal exercise load to the exerciser by varying and controlling the step load even during training based on various data such as the pulse value of the exerciser in the exercise The present invention relates to a step-type training machine capable of performing constant-velocity motion (isokinetic motion) with stable motion speed control and performing training without placing a burden on a joint or the like of an exerciser.

[0002]

2. Description of the Related Art In recent years, various training machines aiming at improving physical strength for young to old people have been developed. For example, a so-called stair climbing type in which a pair of left and right crank pedals that can be driven up and down is provided, and the up and down drive of the left and right crank pedals is transmitted to the eddy current load means to control the up and down drive of the crank pedals. Although training machines are known, since the left and right crank pedals return mechanism of the conventional stair climbing training machine was constituted by separate left and right springs,
The reaction force of the spring applied to the left and right feet of the exerciser was different, and the exerciser could not correctly simulate climbing the stairs.

In order to solve the above-mentioned problems, the applicant of the present invention has provided a left and right crank pedal return mechanism with springs separately provided on the left and right sides. Focusing on durability, we developed a crank pedal return mechanism equipped with a continuous spring to keep the reaction force of the left and right crank pedals constant,
We have proposed a step-type training machine equipped with an L-shaped crank to keep the reaction force of the left and right crank pedals constant and to minimize the change in spring tension.

[0004]

However, in the step type training machine of the type proposed in which the left and right crank pedals are pulled back by a continuous spring, the structure of the left and right crank pedals is formed in an L-shape, and the corner portion is formed. The other end swings up and down by swinging the pedal mounted on one end with the hinge, so that the reaction force of the left and right crank pedals is kept constant and the change in the tension of the spring is maintained. Although it is effective enough to minimize it, the structure of the crank pedal is slightly larger, and load means for controlling the driving speed of the crank pedal, which drives left and right independently up and down, etc. There is a problem that the arrangement of the training machines is somewhat bulky and cannot be said to be a compact step-type training machine as a whole.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a frame section A, a crank pedal section B, a drive section C, and a control section D, and the foot of an exerciser. Thus, the drive speed of the crank pedal portion B, which is driven up and down independently of the left and right, is adjusted by the drive portion C, and the exercise load applied to the exerciser is controlled by the control portion D.

[0006]

Since the above configuration is adopted, the arm on which the steps are mounted can be shortened, and the entire configuration of the crank pedal portion B can be made very small and compact.
In addition, a crank pedal section B that drives left and right independently up and down
The drive unit C for controlling the driving speed of the unit is housed in a unit system in the center frame equipped on the base frame. It becomes possible. Also, the left and right steps are connected by a single spring, so that the load of the vertical movement of the arm can be reduced, and the vertical movement of the arm can be smoothed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a step-type training machine according to the present invention will be described below in detail with reference to FIGS. 1 and 2 are perspective views showing the overall structure of a step-type training machine according to the present invention and the structure of a main part thereof.

The overall structure of the present invention comprises a frame portion A, a crank pedal portion B, a drive portion C (including a crank pedal return mechanism), and a control portion D. Hereinafter, a detailed configuration of each unit described above will be described. The frame part A includes a base frame 1 configured in a cross-girder shape, a center frame 2 configured in a substantially palanquin shape provided on the base frame 1, and vertically at a predetermined interval in front of the base frame 1. An erect post 3 and an erect vertical stand at the same fixed interval behind the base frame 1, and the upper end is bent toward the post 3, and the tip thereof is connected to the post 3.
And a side guard 4 connected to the upper end of the front cover.

[0009] The crank pedal portion B includes a base frame 1
A bracket 11 erected at a certain interval in the vertical direction at a substantially central position of the bracket 11, a pivot shaft 12 and a link shaft 13 extending transversely and in parallel to the bracket 11, a pivot shaft 12 and a link shaft 13 to each other,
It comprises a pair of left and right arms 14 and links 15 arranged to be swingable up and down, and left and right steps 16 pivotally connected to the tips of the left and right arms 14 and links 15 so that the upper surface is always kept in equilibrium. Have been.

A drive section C is provided with a drive shaft 22 which is disposed transversely across a pair of bearings 21 erected in the vertical direction at predetermined intervals on a center frame 2 disposed on the front side of the base plate 1, and Drive shaft 2
2, a pair of left and right freewheel sprockets 24 similarly inserted through the drive shaft 23 and a rotating shaft 25 inserted from the front into the space of the center frame 2. A speed increaser 28 having a sprocket 26 fixed on one side and a large pulley 27 on the other side, eddy current load means 29 disposed below the speed increaser 28, the free wheel sprocket 24, the speed increaser The driving of the eddy current loading means 29 and the eddy current loading means 29 is based on the movement of the chain 30 having one end connected to the vicinity of each step 16 of the left and right arms 14, that is, the movement of both chains 30 moving with the vertical swing of both arms 14. The power is transmitted to a free wheel sprocket 24 which is inserted through the drive shaft 22 at a constant interval, and is transmitted by the free wheel sprocket 24. The rotation of the drive shaft 22 converted into the rotation in the direction is wound between a sprocket 23 disposed on one side of the drive shaft 22 and a sprocket 26 disposed on one side of a rotation shaft 25 constituting a speed increaser 28. The eddy current loading means 2 is transmitted to the large pulley 27 via the chain 31 and the rotation speed increased by the large pulley 27 is passed through the timing belt 32 wound around the large pulley 27.
Timing pulley attached to input shaft 9 (not shown)
To drive the eddy-current load means 29.

By the way, two free ends of the left and right chains 30 each having one end connected to the both arms 14 are provided at right center positions of the base plate 1 through left and right free wheel sprockets 24 inserted through the drive shaft 22. Are connected to both ends of a single spring 34 wound through a total of six pulleys 33 arranged at a fixed interval on the left and right of the front position, and two on the side at the same position. The movement of each chain 30 accompanying the vertical swing of each arm 14 can be performed smoothly.

The control unit D includes an arithmetic processing unit 41 (hereinafter, referred to as a microcomputer in this embodiment) incorporated in a housing 40 mounted at a substantially central position formed in a U-shape at the upper end of the side guard 4 described above. ), Pulse detection circuit 4
2. An alarm buzzer 43 and a display unit 44 (for example, a pulse value, a load level,
It is configured to display age, gender, weight, time, elapsed time, calories burned, training type, etc.)
An input key 45 for inputting various data; a rotation speed detector 46 of the eddy current load means 29 connected to the microcomputer 41 to the pulse detection circuit 42 via a lead wire disposed outside the housing; It is composed of a pulse sensor 47, a constant current power supply 48, and an interface circuit 49. Incidentally, by connecting the printer 50 via the interface circuit 49 to print out the various data, or by connecting to an external host computer via the interface circuit 49, instead of key input, For example, it is possible to input data such as load level, age, gender, weight, time, elapsed time, calorie consumption, type of training, etc. from the outside, and also have a function that can output data such as training results. is there.

Hereinafter, the operation of the step-type training machine according to the present invention based on the above configuration will be described. First, the operation of the step-type training machine will be described. As shown in FIG. 1, the exerciser M performs the left and right steps 1
Put both feet on 6, 16 and alternately apply weight to the left and right feet and step down the left and right arms 14, 14. By this step operation, the left and right arms 14 and 14 rotate by a predetermined angle about the pivot shaft 12 as a fulcrum.

For example, the left arm 14 shown by a solid line in FIG.
Is now stepped down by the left leg of exerciser M,
The chain 30 connected to the front of the step 16 of the left arm 14 is pulled down as the left arm 14 moves downward. Therefore, the free wheel sprocket 24 around which the chain 30 is wound rotates, and the rotation is caused by the drive shaft 2 inserted through the free wheel sprocket 24.
2 is rotated in one direction. The rotation of the drive shaft 22 is input to the large pulley 27 via a sprocket 23 fixed to one side of the drive shaft 22 and a chain 31 wound around a sprocket 26 mounted on a rotating shaft 25 of the large pulley 27. The rotation input to the large pulley 27 is accelerated to a predetermined number of rotations set in advance, and is transmitted to the timing pulley and finally to the eddy current load means 29 via the timing belt 32 wound around the large pulley 27. The transmitted eddy current load means 29 is transmitted.

The end of the left chain 30 pulled out by stepping down the left arm 14 is connected to the spring 3
The movement of the left chain 30 is transmitted to the right chain 30 via the spring 34 because the right chain 30 is connected via the link 4. Therefore, the right chain 30 is in a state of being pulled rearward by the right arm 14 as shown by the solid line in the figure, but as the left chain 30 moves downward, the spring 34 moves to the left, Right arm 1 rotating backward to pull right chain 30
4 tries to move upward. That is, at the time when the stepping down of the left arm 14 by the left foot of the exerciser M ends, the exerciser M raises the right foot upward along with a normal step operation and releases the stepping of the right step 16 by the right foot. The right arm 14 pulled by the right chain 30 moves smoothly upward. Since the tension of the spring 34 for applying a constant tension to the left and right arms 14 is kept substantially constant, the durability of the spring 34 is improved.

When the stepping-down operation of the left foot by the exerciser M is completed, the step 16 pivotally attached to the right arm 14 moves upward as described above, so that the exerciser M moves upward as the next operation. Step down on your right foot. When the exerciser M applies a load to the right step 16 with the right foot and steps down the right arm 14, the chain 30 connected to the front of the pedal 16 of the right arm 14 moves downward, and the chain 30
Is rotated, the freewheel sprocket 24 around which is wound,
This rotation causes the drive shaft 22 inserted in the free wheel sprocket 24 to rotate in one direction. This rotation of the drive shaft 22 is performed in the same manner as in the left step 1 described above.
6, the chain 3 wound around the sprocket 23 fixed to one side of the drive shaft 22 and the sprocket 26 mounted on the rotating shaft 25 of the large pulley 27.
1 is input to the large pulley 27. The rotation input to the large pulley 27 is accelerated to a predetermined number of rotations set in advance, and is transmitted to the timing pulley and finally to the eddy current load means 29 via the timing belt 32 wound around the large pulley 27. Transmitted and the eddy current loading means 2
Rotate 9

The end of the right chain 30, which is pulled out when the right arm 14 is stepped down, is connected to the left chain 30 via a spring 34, so that the right chain 30 is moved via the spring 34. Left chain 30
Is transmitted to Therefore left chain 30 is left step 1
6 is pulled down by the downward movement,
Also in this case, as described above, the spring 34 moves to the left along with the downward movement of the right chain 30 and pulls the left chain 30, so that the left arm 14 rotating downward moves upward. try to. That is, at the time when the stepping down of the right step 16 by the right foot of the exerciser M is completed, the exerciser M raises the left foot upward along with the normal stepping operation and releases the stepping of the left step 16 by the left foot. The left arm 14 pulled by the left chain 30 moves smoothly upward.

That is, in the step-type training machine according to the present invention, the exerciser M alternately steps down the left and right steps 16, 16 with the left and right feet while climbing the steps for a certain period of time, and by a control method described later. This is performed while controlling the load of the eddy current load means 29 so as to be the optimum condition for the exerciser M. Hereinafter, the control method of the eddy current load unit 29 will be described in detail.

First, the exerciser M attaches the pulse sensor 47 to a body capable of measuring a pulse without interfering with the training of the earlobe or the like, and then enters the input key 4 of the display device 44 shown in FIG.
From 5, personal data such as age, gender, weight, exercise time, etc. are input while confirming each time on the display unit. Next, the athlete M balances the body while gripping the handrails formed by the side guards 4 and 4 of the frame part A, and
The training is started by pressing the start / stop key provided in the step and stepping on the left and right steps 16, 16.

During the exercise, the display unit displays the pulse value, the load level, the calorie consumption, and the elapsed time after the start of the exercise in real time. Based on the personal data input as described above, the microcomputer 41 calculates the maximum pulse value, the upper limit pulse value, the target pulse value (general training or training for weight reduction) shown in FIG.

The maximum pulse is estimated from the input age and gender by the following equation. (Male) HRmax = 209-(0.69 x age) (Female) H
Rmax = 205− (0.75 × age) The upper limit pulse value during exercise in this embodiment is set to the maximum pulse value−30, and the following control is performed.

Next, warming up step 1 is entered. Warm-up step 1 (see step 1 in FIG. 6) A warm-up load is required to raise the pulse in the normal state before exercise to the target pulse value.

There is a relationship between the exercise load and the pulse value, and if an appropriate exercise intensity is given, the target pulse value should be almost equal to the target pulse value.
The magnitude of the required warm-up load varies depending on the physical strength level of the exerciser M. If the physical strength level of the athlete is known, the target exercise intensity may be determined based on it, but if the physical strength level is not known, personal data such as age, gender, and weight may be used in determining the target exercise intensity. Then, warm-up is performed at a general standard exercise intensity that can be calculated in advance, and an appropriate target exercise intensity is derived by estimating a physical strength level from a pulse value obtained during the warm-up.

Based on the experiment, the relationship between the exercise load and the age at which the pulse was 50% of the maximum pulse (50% HRmax) was actually measured, and the standard exercise intensity was set as the following equation based on the result. Calculation formula of standard exercise load of (50% HRmax) Step 1 Target exercise load = A1-(B1 x age) A1: 10.0 B1: 0.09 (A1 and B1 are the age and exercise disclosed in FIG. 7) Intensity graphs, both of which are constants obtained from experiments.) A gradually increasing load of 20 minutes step was applied for 3 minutes so as to obtain the standard exercise intensity at 50% HRmax, which was obtained as described above. The average pulse rate per minute is measured, and the physical strength level is divided into three steps to determine the target exercise intensity of the warm-up step 2. (Step 1 Gradual increase exercise load) Step value = Step 1 target exercise intensity / 18 (step / 20 sec) The target exercise load of step 2 for three physical strength levels is set as follows. Level 1: When entering the target pulse zone (target pulse ± 5 beats) within 3 minutes from the start of warm-up. {Enter pulse control processing (no step 2)} Level 2: When the average pulse for 2 to 3 minutes after the start of warm-up is 60 (60% HRmax) of the maximum pulse. {Step 2 target exercise intensity = Step 1 target exercise intensity +5} Level 3: When the average pulse for 2 to 3 minutes after the start of warm-up is 60 or less (60% HRmax) of the maximum pulse. {Step 2 target exercise intensity = Step 1 target exercise intensity + 9} A gradual increase load of 20 seconds is applied to the eddy current load means 29 so that the exercise load of the exerciser reaches the target exercise intensity obtained above in 3 minutes.

When the pulse value of the exerciser exceeds the calculated upper limit pulse value, an alarm is issued by the alarm buzzer 43. When the upper limit pulse value is exceeded for a certain period of time, the training is terminated. When the pulse value during warm-up is greater than the value of the target pulse value minus 5 calculated above: The braking load level of the eddy current load means 29 is reduced by two steps, and the pulse control is started. When it is small: Apply a gradually increasing load for 3 minutes in 20 second steps and measure the average pulse for 1 minute for 2 to 3 minutes at that time. When the measured average pulse value is greater than 60% of the target exercise intensity set above: Change the target exercise intensity to a value obtained by adding 5 to the target exercise intensity. If equal or less: Change to a value obtained by adding 9 to this target exercise intensity.

Next, warming-up step 2 is entered. (See FIG. 6, step 2) Warm-up step 2 (gradual increase exercise load) The gradual increase load of 20 seconds is controlled by the eddy current load means 29 so as to rise to the target exercise load of step 2 changed in 5 minutes. The exercise load is gradually increased with the same slope until the exercise pulse enters the target pulse zone. Step value = (Step 2 target exercise load−Step 1 target exercise load ÷ 15 (step / 20 sec) Again, when the pulse value during exercise is larger than the value of the gradually increasing pulse value minus 5, exercise intensity by the eddy current load means 29 2
Step down. When it is small: Again, the eddy current loading means 29 controls the gradual increase load in 20 second steps so that the exercise intensity by the eddy current loading means 29 reaches the target exercise intensity changed as described above in 5 minutes. Incidentally, the step increasing exercise intensity is obtained by the following equation. Step gradual increase exercise intensity = (Step 2 target exercise intensity-Step 1 target exercise intensity) ÷ 15 (step / 20 sec) If the target pulse value does not become larger than the value of minus 5 in 5 minutes, the target pulse value becomes minus 5 or more. Step increments until

Next, the operation enters the pulse control. (See FIG. 6, automatic control) Pulse control The pulse value is monitored every 20 seconds, and when the target pulse -5 is passed for the first time, the exercise load at the time of warm-up is reduced by two steps. In addition, a one-step exercise load for pulse control that matches the physical strength level of the exerciser is determined by the following equation based on the exercise load at this time. (Exercise load step value for pulse control) Step value = (exercise load x 0.3) / 20 (step / 20sec) Exercise load: Exercise load at the end of warm-up After that, pulse value is measured every 20 seconds, and target Pulse value difference (Δ
HR = HR−THR), and control is performed under the following conditions with a range where ΔHR is ± 5 as a dead zone. When ΔHR> 10, lower the two-step exercise intensity. 5 <ΔHR ≦ 10, lower the one-step exercise intensity. −5> When ΔHR ≧ −10, increase the one-step exercise intensity. When ΔHR <−10, decrease the two-step exercise intensity. Raise 10. Next, cool down. (Refer to FIG. 6, Cool Down) Cool Down When a preset time elapses or when the start / stop key is pressed, a 1 minute cool down is performed and the training is completed.

That is, the exercise intensity is reduced every 20 seconds in steps of 1/3 of the final exercise intensity. If the upper limit pulse value during exercise is set to the maximum pulse value of -30 and exceeds the upper limit value, an alarm is sounded to the exerciser by the alarm buzzer 43. If the upper limit pulse value exceeds 20 seconds or more, the program is compulsorily executed. Terminate. When the calorie consumption is displayed on the display device 44, the calorie consumption value is obtained by the following calculation.

Calculation of calorie consumption Calorie consumption is calculated by the following formula. Calorie consumption = number of rotations of eddy current loading means x body weight (kg)
× 9.8 × (1 / 0.323) × 0.329 (Kcal) 9.8: Gravity velocity 1 / 0.232: Exercise efficiency 0.239: Calories per w

[0030]

As described above, the step-type training machine of the present invention comprises a frame portion A and a crank pedal portion B.
, A driving unit C, and a control unit D. The driving unit C adjusts the driving speed of a crank pedal unit B, which is independently driven up and down by the feet of the exerciser. Since the control unit D is configured to perform the control, the arm on which the steps are mounted can be shortened, and the entire configuration of the crank pedal unit B can be made very small and compact. In addition, since the drive unit C for controlling the drive speed of the crank pedal unit B, which drives left and right independently up and down, is housed in a unit system in a center frame equipped on a base frame, the conventional In this regard, the size can be reduced compared to the step-type training machine. Also, the left and right steps are connected by a single spring to reduce the load of the vertical movement of the arm and to achieve various excellent effects such as smoothing of the vertical movement of the arm.

Further, the driving speed of the crank pedal portion, which is independently driven up and down by the feet of the exerciser, is adjusted by the load means to accurately control the exercise load applied to the exerciser. It is reduced. Also, since the left and right arms are connected by a single spring, when the arms move up and down alternately, the tension of the spring pulled by the left and right arms is kept substantially constant, so that the durability of the spring is improved. Can provide a high-quality step-type training machine.

Further, by exercising at a constant speed based on a weight load, which is a daily exercise load, training can be performed with a small physical burden on the exerciser, and at the same time, an exercise load effective as aerobic exercise can be obtained. The exercise load can be controlled so that the target pulse rate is set and the target pulse rate is maintained.In particular, a warm-up process is introduced in the training process, and the exerciser's physical strength level measured during the warm-up is used. By controlling the pulse, stable and accurate pulse control is possible, so by changing the target pulse,
It is also possible to carry out training corresponding to various trainings such as training for weight reduction and rehabilitation.

Further, the present invention has an excellent effect such that the training effect can be confirmed by measuring the average exercise intensity and the like during the automatic control.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing one embodiment of a step-type training machine of the present invention.

FIG. 2 is a plan view of a main part of a step-type training machine.

FIG. 3 is a block diagram of a control unit of the step-type training machine.

FIG. 4 is a panel configuration diagram of the control unit.

FIG. 5 is a flowchart of the control unit.

FIG. 6 is a graph showing an exercise load setting state of the step-type training machine.

FIG. 7 is a graph describing experimental data.

[Explanation of symbols]

 Reference Signs List A frame portion 1 base frame 2 center frame 3 post 4 side guard B crank pedal portion 11 bracket 12 pivot shaft 13 link shaft 14 left and right arm 15 left and right link 16 step C drive portion 21 pair of bearings 22 drive shaft 23 sprocket 24 free Wheel sprocket 25 Rotating shaft 26 Sprocket 27 Large pulley 28 Gearbox 29 Eddy current load means 30 Chain 31 Chain 32 Timing belt 33 Pulley 34 Spring D Control unit 40 Housing 41 Operation processing means 42 Pulse detection circuit 43 Alarm buzzer 44 Display device 45 Input keys 46 Rotational speed detector 47 Pulse sensor 48 Constant current power supply. 49 Interface circuit 50 Printer

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masao Ito 3-16-9 Uchikanda, Chiyoda-ku, Tokyo Combi Corporation (56) References JP 2-45465 (JP, B2)

Claims (1)

(57) [Claims] 1. A base frame formed in a cross-girder shape, a center frame formed in a substantially palanquin shape provided on the base frame, and a post vertically erected at a predetermined interval in front of the base frame. A frame part A, comprising a side guard that is substantially vertically erected at a fixed interval behind the base frame, is bent upward at the post side, and has a tip connected to an upper end of the post. A bracket erected at a substantially central position of the frame at a fixed interval in the vertical direction, a pivot axis and a link axis extending transversely and parallel to the bracket, and a base end for each of the pivot axis and the link axis. And a pair of left and right arms and links arranged so as to be able to swing up and down, and a left and right arm pivotally connected to the left and right arms and the tip of the link such that the upper surface is always kept in balance. And a drive shaft disposed laterally across a pair of bearings vertically erected at predetermined intervals on a center frame disposed forward of the base plate. A sprocket fixedly attached to one side of the drive shaft, a pair of left and right freewheel sprockets, which are also inserted through the drive shaft and convert the rotation of the drive shaft in one direction, and from the front in the space of the center frame. A speed increasing device having a sprocket fixed to one side of a rotating shaft to be inserted and having a large pulley on the other side, and eddy current loading means disposed below the speed increasing device; The drive of the container and the eddy current load means is performed by moving a chain having one end connected to each step of the left and right arms. A sprocket disposed on one side of the drive shaft, transmitting the rotation of the drive shaft, which is transmitted to a free wheel sprocket inserted at a fixed interval through the drive shaft and converted into one-way rotation by the free wheel sprocket, An eddy current load is transmitted to a large pulley via a chain wound between sprockets arranged on one side of a rotating shaft, and the speed increased by the large pulley is passed through a timing belt wound around the large pulley. And a free end of the left and right chains, one end of which is connected near each step of the left and right arms, and the free ends of the left and right chains are inserted through the drive shaft. Through the left and right free wheel sprockets and at the approximate center of the base plate Steps characterized in that they are connected to both ends of a single spring wound through a total of six pulleys arranged at regular intervals on the left and right of the front position and two on the front part, respectively. Formula training machine.