JPS6122609Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a muscle strength training device, and more particularly to a load device that uses a torque motor instead of a weight as the load required for muscle strength training.

Muscle strength training equipment is generally a machine that is suspended from a wire as a load, as exemplified by a training device called a rat machine, which has a mechanism for moving weights up and down using the arm and is used to train abdominal and arm muscles. One or more weights are configured to be detachable, and a lever such as a handle connected to the wire is provided so as to be movable vertically or horizontally along a guide bar, and the lever is configured to be able to be operated from various positions. It is designed to use weights as a load to train your arm and abdominal muscles.

In such strength training equipment, adjusting the load requires changing the number of weights, which is cumbersome, and after adjusting the load, it remains constant regardless of the lever position, so the load position and time factors added in the actual exercise movement are also There was an inconvenience that the load pattern differed from the included one. For example, in the loading mode of weightlifting, there is a nearly no-load state during the process of grasping the barbell and lifting it to the chest, but it is difficult to create a structure that matches the actual loading mode for training equipment, and it is difficult to create a structure that matches the actual loading mode. Even if it were possible to create a structure with the same characteristics as the previous one, it would be a complicated structure and an expensive device, and a device with a different structure would be required for slight changes in the load mode such as jerking and snatching, which is a disadvantage in that it is less versatile. It was hot.

This invention uses a torque motor as a load,
By controlling the torque setting value of the torque motor in a load program that includes load position and load time elements, it is possible to automatically adjust the load generation to match the load condition of any exercise operation, and the conventional problems have been solved. The purpose is to provide a strength training device.

FIG. 1 shows the structure of a mechanism showing an embodiment of the present invention. One end of a handle 3 is attached to a pulley 2 having a guide wheel 2A so as to be able to move up and down along a parallel and vertical guide rail 1. A lever portion 3A is provided at the other end of the handle 3 and is gripped by the driver in various postures. The vertical movement of the pulley 2 is regulated by a wire 4 stretched along the guide rail 2, and the wire 4 is connected by pulleys 5, 6, and 7 to a torque motor 8 or a transmission from the motor 8 via a gear mechanism. and is used for power transmission between the torque motor 8 and the pulley 2. These means are designed to be changed as appropriate. For example, a sliding means for overloading and a stopper 9 for regulating the position of the pulley 2 are provided at the connection between the motor 8 and the wire 4 for safety reasons, and a stopper 9 for regulating the position of the handle 3 is provided. For horizontal movement, the integrated mechanism including the guide bar 1, motor 8, etc. is configured to be rotatable horizontally or diagonally.

A tension detector 10 is provided on the wire 4 to detect the load applied to the pulley 2. Further, a rotary potentiometer coupled to the pulley 6 is provided as a position detector 11 of the pulley 2.

Detection signals from these detectors 10 and 11 are used for feedback control of the torque motor 8. The configuration of this control device is shown in FIG. In the figure, the tension detector 10 is a wire 4
The position detector 11 outputs a voltage signal proportional to the load acting on the pulley 2 from the tension received by the pulley 2, and the position detector 11 outputs a voltage signal proportional to the pulley position. These detectors 1
The outputs of 0 and 11 are taken in selectively or both together as feedback signals to the control section 13 by switches 12A and 12B, and the program setting output from the reference signal generator 14 is given as the target value. A time signal is applied from the timer 15 to this program setting output through a switch 14A as required.

The control unit 13 uses the output of the reference signal generator 14 as a comparison standard to obtain the operation output of the motor drive device 16 so that the position and load of the pulley 2 match the reference values. The motor drive device 16 is, for example, a voltage adjustment circuit using power transistor switching, and the forward and reverse rotation of the motor 8 is configured by gate control for changing the phase order. Further, the control unit 13 is not limited to an analog type. It is advantageous to make the reference signal generator 14 and the like digitally controlled by a microcomputer to facilitate and diversify program control.

The control mode of the training device having such a configuration can be selected as appropriate depending on the type of training. This control will be explained below using an example.

(1) Isometric usage The torque output of the motor 8 is controlled so that the position of the lever 3A does not change and the lever 3A generates the same reaction force as the force pushed by the exerciser. For this control, a reference signal Eref for instructing the stop position of the pulley 2 is applied from the reference signal generator 14, the switch 12B is closed, and the output of the torque motor 8 is controlled using the position detection signal Es as a feedback signal. When the torque control system is interposed as a minor pool in this control, the output of the tension detector 10 is also introduced into the control section 13.

(2) Constant load usage The motor 8 is controlled to have a constant torque output so as to generate a constant load on the lever 3A. For this control, a reference signal Eref corresponding to a preset torque is generated from the reference signal generator 14, the switch 12A is closed, and the output of the torque motor 8 is controlled using the tension detection signal _ET as a feedback signal. In this usage, if the muscle strength of the exerciser is equal to the set torque, the lever position will not change, and if the set torque is exceeded, the remaining energy will be consumed to move the lever.

(3) How to use position-load characteristics The motor 8 is designed to generate a load according to the pre-programmed characteristics according to the position of the lever 3A.
Torque output control is applied. For this control, the output of the position detector 11 is input to the reference signal generator 14 through the switch 12c, for example, the third
As shown in the figure, a torque setting output corresponding to the position signal Es is obtained from the reference signal generator 14, and the output of the torque motor 8 is controlled using the tension detector E _T as a feedback signal.

(4) How to use time-position or load characteristics The torque output of the motor 8 is controlled so that the position or load of the lever 3A is generated as a function of time in accordance with the characteristics programmed in advance. For this purpose, switch 14A is used from the start of control.
The time signal of the timer 15 is input to the reference signal generator 14 through the input terminal 14, and the position or torque setting output with respect to time is obtained as shown in FIG. Controls the output of the motor 8.

As described above, the strength training device according to the present invention uses a torque motor as the load instead of weights, so it is easy to adjust the load, and it is also possible to control programs that match arbitrary characteristics, depending on the training type and purpose. It can be made highly versatile to obtain load output according to the load.

[Brief explanation of the drawing]

FIG. 1 shows the structure of a mechanism showing an embodiment of the present invention.
2 is a circuit diagram of a control device for the motor 8 in FIG. 1, and FIGS. 3 and 4 are diagrams showing examples of load characteristics in FIG. 2. 2... Pulley, 3... Handle, 4... Wire, 8... Torque motor, 10... Tension detector,
11...Position detector, 13...Control unit, 14...
Reference signal generator, 15...timer, 16...motor drive device.

Claims (1)

[Scope of utility model registration request] a torque motor for generating the torque required for the lever as a moving load for the lever operated by the exerciser; a position detector for detecting the position of the lever; and a tension detector for detecting the load acting on the lever. , a control means for controlling the output of the torque motor by comparing the position detector and the tension detector as feedback signals with a reference signal according to a preset program. Device.