KR20010000019A - The safety controller with a prompt damping device in the teadmill - Google Patents

Abstract

PURPOSE: A danger sense type safety device with quick braking device prevents safety accident by stopping rotating belt rapidly in case of seceding user from fixed running region, minimizes damage of athlete by forced-constraining inertia motion of belt, cut off power source of run sporting device automatically in outbreak state of emergency. CONSTITUTION: The danger sense type safety device comprises sensor part(110) to generate electric signal by sensing secession of user out of the belt(2) using sensor; control part of safety device(120) to drive relay(K4) of quick braking part(140) to be composed with electromotor power source relay(K1), gate relay(K3) of electromotor controller to control electromotor and closed circuit to amateur winding of electromotor rotor by receiving signal of sensor part(110); quick braking part(140) to be composed with relay(K4) and brake resistance(RB) to be driven by control part of safety device(120); reset part(130) to be composed with manual switch to restore electromotor power source relay(K1), gate relay(K3) of electromotor controller and relay(K4) of quick braking part manually.

Description

The safety controller with a prompt damping device in the teadmill

The present invention relates to a risk-sensitive safety device having a rapid braking means in a running exercise machine, in particular, to prevent a safety accident by quickly stopping the rotating belt when the user in a running exercise carelessly deviates from the designated exercise area. It relates to the safety device of one running exercise machine.

Recently, as a representative exercise equipment of aerobic exercise, a running exercise machine (Treadmill) is widely spread, and such a running exercise machine is installed in a narrow indoor space, and it can be easily carried out by both young and old, and exercise the lower body to the athlete as well as the general public. It is known as an exercise device suitable for strengthening and cardiopulmonary function.

1 is a schematic perspective view showing a running exercise machine and safety equipment according to the prior art. Referring to Figure 1 using a conventional running exercise machine and safety equipment as follows.

The conventional running exerciser is supported by a belt installed on the body and a support of the body, and has an operation panel unit on which a handle is installed and adjusts the rotation of the belt according to a user's operation command. The user presses the start button provided on the operation panel to start the running motion in a state of rotating the belt in a stationary state. The belt is rotated at a predetermined speed by a driving force of an electric motor built into the body. When the running motion is started as described above, the user pushes the upper body forward and performs the running motion by stepping on the foot according to the rotational speed of the belt. In addition, the conventional running exercise machine is provided with a push button for stopping the rotation of the belt during the running movement in the operation panel portion. The push button is operated according to the user's pressing operation to stop the belt during the running movement, and when this push button is pressed, the control unit built into the operation panel unit stops the driving of the motor. However, in this push button type safety device, the user had to directly operate the push button, so that if the user falls down due to carelessness or other reasons during the running movement on the belt, the user has difficulty in stopping the running exerciser because the user cannot operate the push button.

In view of this, in the conventional exercise apparatus according to another technique, as shown in FIG. 1, the connection pin of one side is detachable, is inserted into the insertion hole of the operation panel portion, and the tongs run on the other side of the user's clothes while running. Detachable safety gear has been proposed for exercise. If the athlete falls down due to carelessness during exercise, the connection pin is pulled out to cut off the power.However, this detachable safety device is reluctant to be worn by the user. Not only can it be prevented, but it is also a factor that makes the exercise posture unnatural.

In addition, even if the above pushbutton type safety device or safety device is properly operated and the power is cut off, the belt stops after inertia movement according to the second law of movement. I'm wearing it.

The object of the present invention in view of this point is to automatically cut off the power of the running exercise machine in the event of an emergency such as a runner's loss of running, minimize the injury of the athlete by forcibly restraining the inertial movement of the belt, and once braking is automatically This is to enhance the safety by allowing the relay to be restored only by manual reset instead of recovery.

1 is a schematic perspective view showing a running exercise machine and safety equipment according to the prior art,

Figure 2 is a schematic perspective view showing the risk-sensitive safety device of the running exercise machine according to an embodiment of the present invention,

Figure 3 is a block connection diagram of the danger detection safety device having a rapid braking means in the running exercise machine according to an embodiment of the present invention,

Figure 4 shows a circuit diagram of each of the risk-sensitive safety device having a sudden braking means in a running exercise machine according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: body 2: belt

3: support base 4: control panel

5: handle 6: pushbutton

100: rectification and filter unit 110: sensor unit

111: light emitting unit 112: light receiving unit

120: safety device control unit 130: reset unit

140: rapid braking

The present invention having the above-mentioned object is a running exerciser having a belt (2) installed on the body (1) and rotated by an electric motor, when the user's body is out of the belt (2) area is detected by the electric signal A sensor unit 110 for generating a signal; an oscillator U2 for receiving a signal from the sensor unit 110 and amplifying it, an oscillator U2 for oscillating a reference signal for distinguishing a signal from disturbance, and the signal amplified by the amplifier and the Relay driving for controlling the motor input power relay K1, the gate relay K3 of the motor controller, and the relay K4 of the rapid braking unit according to the comparison result of the comparator U4 comparing the signals of the oscillator and the comparator. Safety device control unit 120 composed of a device; Inertial cloud by feeding back the electromotive force due to the inertial motion of the rotor of the motor to the amateur winding of the motor rotor And the rapid claim ET 140 to force the restraint; The power relay K1, the gate relay K3 of the motor controller, and the relay K4 of the rapid braking part may include a reset unit 330 which is restored only manually, not automatically after braking the motor. It is characterized by.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment according to the present invention having the configuration as described above in detail as follows.

Figure 2 is a perspective view showing the appearance of a running exercise machine equipped with a risk-sensitive safety device according to the present invention, Figure 3 is a block connection diagram of a risk-sensitive safety device with a rapid braking means according to the invention, Figure 4 A circuit diagram showing the sensor unit 110, the safety device control unit 120 and the reset unit 130 of the risk-sensitive safety device having a rapid braking means according to the invention.

As shown in FIG. 2, the appearance of the running exercise machine according to the present invention is different from the running exercise device according to the prior art in that the light emitting unit 111 and the light receiving unit 112 of the sensor unit 110 are provided. The photoelectric sensor unit 110 may be installed in one or more numbers around the belt 2, and the light emitting unit 111 and the light receiving unit 112 may be installed adjacent to each other or may be installed at an appropriate position at a distance. have. That is, the position of the sensor unit 110 shown in FIG. 2 is just one example. Although the light emitting unit 111 of the sensor unit 110 uses an IR LED emitting infrared rays, and the light receiving unit 112 of the sensor unit 110 may use a photodiode, but other types of sensor elements may be used. It's okay.

Referring to Figure 3 specifically describes the operation of the present invention.

When the K1 relay of the power supply of FIG. 3 operates and power is supplied to the motor controller, the IR LED of the sensor unit 110 of FIG. 3 emits infrared rays, and the user who has exercised on the belt 2 is operated. When the body is out of the belt 2 region due to the loss of weight or other reasons, the infrared rays emitted from the IR LED of the sensor unit 110 of FIG. 3 are reflected from the user's body and the sensor unit 110 of FIG. The photodiode is absorbed by the photodiode and converted into electrical energy and sent to the safety device control unit 120 of FIG. 3. The safety device control unit 120 of FIG. 3 includes an amplifier for amplifying the electric energy from the sensor unit 110, a comparator for making a judgment with the amplified signal, and a driver for driving a relay.

After amplifying the electric energy signal transmitted from the sensor unit 110 to compare the output to drive the relay. This output opens the relay K1 of the failsafe control unit 120 of FIG. 3 and the relay K1 of the power supply unit which operates integrally with this relay. At the same time, the relay K2 of the safety device control unit 120 is closed to close the gate relay K3 of the motor controller and the relay K4 of the rapid braking unit 140. In this case, the power input to the motor controller is cut off, and the gate of the power control element of the motor controller becomes zero potential to cut off the output of the motor controller. Even if the power of the motor is cut off, the rotor of the motor is inertial motion.Because the relay K4 of the rapid braking unit 140 is closed, the electromotive force induced in the rotor by the inertia motion causes the braking resistance of the rapid braking part. RB flows, and the inertia motion is forcibly braked by supplying a voltage generated at both ends of the braking resistor RB to the closed circuit. After this operation, the relays K1, K2, K3, and K4 of FIG. 3 are not restored until the switch of the reset unit 130 of FIG. 3 is pressed, so that K1 continues until the user manually resets them. With the dog open, K2, K3, K4 will remain closed.

The operation of the sensor unit 110, the safety device control unit 120, and the reset unit 130 described above may be described in more detail with reference to the circuit diagram of FIG. 4.

When the voltage stepped down in the motor controller of FIG. 3 is rectified through the rectifying circuit BD of the rectifying and filter unit 100 of FIG. 4, the pulsation is removed by the resistor R18 and the capacitor C6 and then the constant voltage device U3. After stabilizing, it is supplied to each part. At this time, the unstable multivibrator U2 of the safety device control unit 120 of FIG. 4 starts oscillation. The oscillation is used as a reference signal that distinguishes the disturbance from the signal, and the oscillation period is determined by the resistors R2, R3 and the capacitor C3. The oscillated signal is shaped through the capacitor C1 of the safety device control unit 120 and the diode D1 through the comparator U4, and then supplied to the base of the transistor Q3 through the resistor R16 of the safety device control unit 120. do. As a result, the infrared transmitting element 111 connected to the collector of the transistor Q3 emits infrared rays into the air. The infrared rays thus emitted are reflected by the body of the exerciser who is off the belt 2 of the running exercise machine and detected by the photodiode of the light receiving unit 112, and the detected signal is the operational amplifier U1A of the safety device control unit 120. It is amplified by and delivered to pin 2 of the comparator U4. This signal is compared with the signal from oscillator (U2) through synchronous detection. As a result, the output of pin 18 of comparator (U4) and

Coming out pin 23, transistors Q1 and Q2 are operated. Q1 is turned off and Q2 is turned on. This state is maintained until the external reset switch (RESET) is pressed. As a result, the K1 relay of FIG. 3 is opened, the K2 relay is closed, and the motor controller gate relay K3 and the quick brake 140 relay K4 are closed, so that the input power of the motor is boiled and the gate of the power control element of the motor controller is closed. When the potential becomes 0, the power supply to the motor is cut off, and the circuit of the rapid braking unit 140 becomes a closed circuit to forcibly brake the inertial motion of the rotor.

As described above, the present invention not only automatically cuts off the power supplied to the motor after detecting the photoelectric sensor when the user moves out of the designated exercise area, but also configures the amateur winding and the braking resistor of the motor in a closed circuit. By using the electromotive force generated from the movement to brake the rotor, it is possible not only to quickly stop the motor in an emergency situation during running movement, but also to eliminate the need for a separate braking device for braking the inertial movement of the rotor. The production cost of the running exercise machine, weight reduction, the braking time can be obtained. As a result of the test, in the absence of the braking device according to the present invention, the time required for the rotor to stop after the motor power is cut is 3 to 4 seconds, while the present invention is shortened to less than 1 second.

After all, in addition to the effect of preventing the injury of the user in the running exercise equipment, by simplifying the additional device that inhibits the movement, such as straps, it is possible to ensure a comfortable exercise, to achieve high quality of the product, considering the domestic market conditions of imported products It is expected that many partial import substitution effects can be expected.

Claims (5)

In the running exerciser is installed on the body and rotated by the motor, the input power is controlled by the relay and controlled by the motor controller, when the user's body is out of the belt (2) area is detected and electric A sensor unit 110 for making a signal; An amplifier receiving the signal from the sensor unit 110 and an oscillator (U2) for oscillating a reference signal for distinguishing the disturbance and the signal and a comparator (U4) for comparing the signal of the amplifier and the signal amplified in the amplifier And a safety device control unit 120 including a relay driving device for controlling the motor input power relay K1, the gate relay K3 of the motor controller, and the relay K4 of the rapid braking unit according to a comparison result of the comparator. ; It is connected to both ends of the motor rotor to forcibly restrain the inertia motion by feeding back the electromotive force due to the inertial motion of the rotor of the motor after the power is cut off of the motor, the safety device control unit ( Rapid braking unit 140 composed of one relay (K4) driven by the 120 and one braking resistor (RB) connected in series with the relay (K4) Safety device for running exercise equipment, characterized in that comprises. According to claim 1, wherein the sensor unit 110 is composed of a light emitting unit 111 and a light receiving unit 112, the light emitting unit 111 uses an IR LED and the light receiving unit 112 using a photodiode. Running safety equipment characterized in that. According to claim 2, wherein the light emitting portion 111 and the light receiving portion 112 is installed or coupled to the outside of the running exercise machine body 1 is configured to include at least one light emitting portion 111 and the light receiving portion 112. Safety device of a running exercise, characterized in that. The braking resistor (RB) of the rapid braking unit 140 and the armature winding of the motor rotor when the relay K4 of the rapid braking unit is closed by the safety device control unit 120. Safety device for running exercise equipment, characterized in that configured to form a closed circuit. According to claim 1, It is connected to the safety device control unit 120, the input power relay (K1), the gate relay (K3) of the motor controller and the relay (K4) of the rapid braking unit automatically after braking the motor Safety device for a running exercise machine, characterized in that it comprises a reset unit 130 which is a switch for manually inputting a control signal to the relay drive device of the safety device control unit 120 to be recovered only manually without recovery .