CN107228166A - Variable damping mechanism of body-building apparatus - Google Patents

Abstract

A variable damping mechanism of body-building apparatus is prepared as driving damping unit of damping shaft to generate relative damping action to rotate by first transmission rope on first variable-speed wheel of main shaft to train muscular endurance of leg of runner, using the first transmission rope to regulate and control rotation speed at the first variable-speed wheel or simultaneously matching the second transmission rope with the first variable damping unit through speed ratio of second variable damping unit on the second variable-speed wheel, using damping action of magnetic control wheel or fan of damping unit to expand damping range, adapting to muscular training of runner in different degree, using resistance of damping unit to make running belt or connecting rod/pedal quickly stop when speed of user is slow down.

Description

Variable damping mechanism for fitness equipment

technical field

The invention relates to a variable damping mechanism of fitness equipment, in particular to a variable damping mechanism of fitness equipment which is convenient for adjusting the damping size.

Background technique

At present, there are many kinds of treadmills, one of which is a flat treadmill, which only uses the inertia wheel to pass the reverse thrust of the runner to the running belt, and uses the inertia wheel to assist the running belt to rotate and advance. The faster the speed is, but the inertial wheel has a rotating gravitational acceleration, so the runner will not be able to stop the running belt quickly if he wants to stop while running. If the runner stops running quickly at this time, it will cause throwing danger.

In order to solve the aforementioned problems, an electric treadmill was invented. The power of the existing electric treadmill all uses a single motor and a single steering as the power source to pull the running belt of the treadmill, and the power source is nothing more than a DC motor. Or AC inverter motor two. However, it is well known that the range of speed and power provided by DC motors is limited and cannot be used indefinitely; although the range of speed and power of AC variable frequency motors is relatively wide, at extremely low frequencies (low speeds), the rotor magnetic flux of the motor is easily saturated, resulting in AC variable frequency motors are difficult to control, and there is even a risk of burning them out. Therefore, when using an AC variable frequency motor at low frequency, the frequency converter will automatically reduce the voltage applied to the motor, so that the torque will be greatly reduced. Because for AC variable frequency motors, below 120HZ is used for constant torque, and above 120HZ is used for constant power; therefore, when operating at high frequencies above 120HZ, the motor cannot maintain a high level of torque output, which limits it to a considerable extent speed output range.

Therefore, no matter the existing treadmill power source uses a DC motor or an AC variable frequency motor, a trade-off must be made in the speed provided by it. For example; in the extremely low speed used for rehabilitation, the power source must give up the implementation of high speed, and exclude users who run at high speed. Conversely, if you want to output at high speed, you must give up low-speed rehabilitation users. In order to reduce the limitations caused by the above situation, treadmills used in rehabilitation often use AC variable frequency motors with a wider speed output range to meet the extremely low speed requirements for rehabilitation and the high speed requirements for fitness.

Because the above-mentioned existing treadmills must be driven by motors, the aforementioned passive electric treadmills mainly for rehabilitation were invented, but in fact, for example, one flat treadmill is dangerous, while the other electric treadmill only has cardiopulmonary function. training, and need circuit boards, control panels and motors, relatively high cost; in view of the aforementioned defects, a magnetically controlled treadmill was invented; Fast or slow, and the training of muscle strength can not be performed according to the runner's ability to speed up or slow down according to the runner's ability to self-adjust the required muscle strength training.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a variable damping mechanism of fitness equipment, through which the first transmission rope on the first transmission wheel of the main shaft drives the damping device of the damping shaft to produce relative damping effect Rotate to train runners leg muscle endurance, the first transmission rope passes through the first variable damping mechanism on the first speed change wheel or at the same time cooperates with the second transmission rope to pass through the second variable damping mechanism on the first transmission wheel The gear ratio on the second gear wheel adjusts the speed, and cooperates with the magnetic control wheel or fan damping effect of the damping device to expand the control damping range, which can adapt to the muscle strength training of runners at different levels. When the user slows down, he can use the The resistance of the damping device makes the running belt or connecting rod/pedal decelerate and stop quickly. In addition to being safe, it does not need motor drive or electric drive when used in various places.

In order to achieve the above object, the present invention provides a variable damping mechanism of fitness equipment, which is arranged on a fitness equipment and has a main shaft, a first transmission rope, a first variable damping mechanism, a damping shaft, a first Two transmission ropes, an inertia wheel and a pulley, the variable damping mechanism includes: one side of the main shaft is provided with a first speed change wheel, and a plurality of step ring grooves with different diameters are arranged on the first speed change wheel from large to small , the main rotating shaft and the damping rotating shaft are arranged on the body and are arranged parallel to each other and at intervals; the first variable damping mechanism has a first speed change regulation mechanism and the first transmission rope arranged adjacent to the first speed change wheel, The first transmission rope is wound on the first speed change wheel and the damping shaft. The first speed change regulation mechanism has a first bracket, at least one first pull rod, at least one first spring, a first push rod, at least one The first pull cord and a first pressure cord fastener, the first bracket is fixed on the body, the first pull rod axially passes through the first bracket, the front end of the first pull rod fixes the first pull cord, the first pull rod The rear end of a pull rod is sleeved with the corresponding first spring, and then the first push rod is fixed on the rear end of the first pull rod to withstand the first spring, and the first pressing rope fastener is fixed on the first pull rod , to press the first transmission rope sleeved on the first speed change wheel and the damping shaft and be controlled by the first pull rod to move with the first pull rod; the inertia wheel and the pulley are coaxially arranged on the main The rotating shaft is away from one end of the first speed change wheel; the second transmission rope is wound on the pulley and the damping rotating shaft; and a first knob buckle is connected with the corresponding first pull rod through the first pull rope, so as to Regulate the first pull rod to move to compress the first spring and after it is released, push the corresponding first push rod back by the first spring, and then move the first transmission rope at different diameters of the first speed change wheel. Transformation is carried out on the ring groove of this stage to provide different speed ratios and adjust the size of different damping.

The variable damping mechanism of the fitness equipment further includes a damping device, the shaft is set on the damping shaft, and the first transmission rope drives the damping shaft and the damping device to rotate to increase the damping.

In some embodiments, a front end of the first bracket is provided with a first front baffle, a rear end of the first bracket is provided with a first rear baffle, and the first front baffle and the first rear baffle are The first pull rod is axially passed between the plates, and the first pull rope is fixed at the end of the first pull rod passing through the first front baffle, and the first pull rod passes through a side of the first rear baffle. The corresponding first spring is sleeved on the piercing section, and then the first push rod is fixed on the rear end of the first pull rod to withstand the corresponding first spring, so that the first spring is positioned on the first tailgate and the first putter.

In some embodiments, the damping device is a magnetic wheel or a fan.

In some embodiments, the damping device disposed on the damping shaft may include at least one magnetron wheel and at least one blowing fan arranged coaxially.

The variable damping mechanism of the fitness equipment further includes a second variable damping mechanism, the second variable damping mechanism is arranged on the side of the damping shaft corresponding to the second transmission rope, the second variable The damping mechanism has a second speed change wheel and a second speed change regulating mechanism, the second speed change wheel is coaxially arranged on the side of the damping rotating shaft corresponding to the second transmission rope, the second speed change regulating mechanism and the first speed change regulating mechanism The control mechanism is the same, the second speed change control mechanism has a second bracket, at least one second spring, at least one second pull cord, at least one second push rod, and the second transmission rope is wound around the second speed change wheel and the pulley At the same time, the second pull cord of the second variable speed control mechanism is extended and connected to a second knob buckle on the body to control the tightness, and cooperates with the first variable damping mechanism to expand the damping control range.

In some embodiments, the exercise equipment is a treadmill or an exercise bike.

Description of drawings

FIG. 1 is a three-dimensional perspective schematic view of a first embodiment of the variable damping mechanism of the fitness equipment of the present invention.

FIG. 2 is a three-dimensional perspective schematic view of the first embodiment of the variable damping mechanism of the fitness equipment applied to a treadmill.

FIG. 3 is a schematic three-dimensional perspective view of a second embodiment of the variable damping mechanism of the fitness equipment of the present invention.

FIG. 4 is a three-dimensional perspective schematic view of the second embodiment of the variable damping mechanism of the fitness equipment of the present invention applied to a treadmill.

FIG. 5 is a schematic three-dimensional perspective view of a third embodiment of the variable damping mechanism of the fitness equipment of the present invention.

FIG. 6 is a three-dimensional perspective schematic view of the third embodiment of the variable damping mechanism of the fitness equipment of the present invention applied to an exercise bike.

Explanation of reference signs

100 variable damping mechanism

1 main shaft

11 First speed change wheel

111 class ring ditch

2 damping device

21 damping shaft

3 The first variable damping mechanism

31 The first variable speed regulating mechanism

311 First bracket

3111 First Front Bezel

3112 First Tailgate

312 First tie rod

3121 First pressure cord fastener

313 first spring

314 First putter

315 First pull cord

32 First drive rope

4 First Knob Buckle

11a Second gear wheel

3a Second variable damping mechanism

31a The second gear adjustment mechanism

311a Second bracket

312a Second tie rod

313a Second spring

314a Second putter

315a Second drawstring

32a Second drive rope

4a Second Knob Buckle

5 fly wheel

6 pulleys

200 treadmill

A running belt

300 exercise bike

71 connecting rod

72 Pedal.

detailed description

Please refer to Fig. 1 to Fig. 2 at the same time, the variable damping mechanism 100 of the present invention includes a main shaft 1, a first transmission rope 32, a first variable damping mechanism 3, a damping shaft 21, a second Transmission rope 32a, an inertia wheel 5 and a pulley 6; the fitness equipment in this embodiment is a treadmill 200, and the variable damping structure 100 is arranged at the front end of the treadmill 200.

The main rotating shaft 1 is passed through the front end of the running belt A, and one side of the main rotating shaft 1 is provided with a first speed change wheel 11, and a plurality of step ring grooves 111 with different diameters are arranged on the first speed change wheel 11 from large to small; The main rotating shaft 1 and the damping rotating shaft 21 are arranged on the machine body and are parallel to and spaced from each other.

The variable damping structure 100 can further include a damping device 2 , the axis of which is set on the damping shaft 21 , and the first transmission rope 32 can drive the damping shaft 21 and the damping device 2 to rotate to increase the magnitude of damping.

The first variable damping mechanism 3 includes a first speed change regulating mechanism 31 and the first transmission rope 32 located adjacent to the first speed change wheel 11, and the first transmission rope 32 is wound around the first speed change wheel 11 and the first speed change wheel 11. On the damping rotating shaft 21.

The first speed change regulating mechanism 31 includes a first bracket 311, at least one first pull rod 312, at least one first spring 313, a first push rod 314, at least one first pull cord 315 and a first pressure cord fastener 3121 (the present invention is illustrated with two first pull rods, two first springs and two first pull cords as illustrations, but not limited thereto, and the following descriptions are corresponding to each single component), wherein the The front end of the first bracket 311 is provided with a first front baffle 3111, and the rear end of the first bracket 311 is provided with a first rear baffle 3112, and the first front baffle 3111 and the first rear baffle 3112 are axially penetrated. The first pull rod 312 is set, and the first pull rope 315 is fixed at a front passing section where the first pull rod 312 passes through the first front baffle 3111 , and the first pull rod 312 passes through the first rear baffle The corresponding first spring 313 is sheathed in a rear section of the plate 3112, and then the first push rod 314 is fixed on the rear end of the first pull rod 312 to withstand the first spring 313, so that the first spring 313 Located between the first tailgate 3112 and the first push rod 314 .

The first pressing rope buckle 3121 is fixed on the first pull rod 312 to press the first transmission rope 32 sleeved on the first speed change wheel 11 and the damping shaft 21 and move with the first pull rod 312 .

The inertia wheel 5 and the pulley 6 are coaxially arranged on the end of the main rotating shaft 1 away from the first transmission wheel 11 .

The first knob buckle 4 is connected with the first pull cord 315 to regulate the advancement and relaxation of the first pull rod 312. After the first spring 313 pushes the first push rod 314 back, the first transmission The rope 32 slides on the stepped annular grooves 111 of different diameters of the first transmission wheel 11 to provide speeds of different transmission ratios, and drives the damping device 2 on the damping shaft 21 to adjust the magnitude of different damping.

Please also refer to FIGS. 1 to 4, the variable damping mechanism 100 of the present invention may further include a second variable damping mechanism 3a to expand the adjustable damping range; the second variable damping mechanism 3a is arranged on the damping shaft 21 Corresponding to one side of the second transmission rope 32a, the second variable damping mechanism 3a has a second speed change wheel 11a and a second speed change regulating mechanism 31a, and the second speed change wheel 11a is coaxially arranged on the damping shaft 21 Corresponding to one side of the second transmission rope 32a, the second speed change regulation mechanism 31a is the same as the first speed change regulation mechanism 31, and the second speed change regulation mechanism 31a has a second bracket 311a, at least one second spring 313a, at least A second pull cord 315a and at least one second push rod 314a (the present invention is illustrated with two first pull rods, two first springs and two first pull cords, but not limited thereto, below Each individual component is correspondingly illustrated in the description), the second transmission rope 32a is wound around the second speed change wheel 11a and the pulley 6, and at the same time, the second pull cord 315a of the second speed change regulation mechanism 31a is extended and connected to a position such as a treadmill A second knob buckle 4a on the body of the fitness equipment of 200 controls the tightness, and cooperates with the first variable damping mechanism 3 to expand the range of damping regulation.

In some embodiments, the damping device 2 can be a magnetron wheel or a blower fan.

In some embodiments, the damping device 2 can be composed of at least one magnetron wheel and at least one blowing fan arranged coaxially.

Please refer to FIG. 5 and FIG. 6 again. This embodiment is applied to fitness equipment such as an exercise bike 300 , and its structure is the same as that of the first and second embodiments, so it will not be described again.

The two connecting rods 71 of the exercise bike 300 are respectively connected to both ends of the main shaft 1 , and the two pedals 72 of the exercise bike 300 are respectively connected to the ends of the corresponding connecting rods 71 away from the main shaft 1 .

Through the above-mentioned structure, the damping device 2 of the damping shaft 21 is driven by the first transmission rope 32 on the first speed change wheel 11 of the main shaft 1 to rotate relative to the damping effect, so as to train the runner's leg muscle endurance. The first transmission rope 32 passes through the first variable damping mechanism 3 on the first speed change wheel 11 or at the same time cooperates with the speed change of the second transmission rope 32a on the second speed change wheel 11a through the second variable damping mechanism 3a Ratio control the rotational speed, and cooperate with the magnetic control wheel or fan damping effect of the damping device 2 to expand the control damping range, which can adapt to the muscle strength training of runners of different degrees. When the user slows down, the damping device 2 can be used The resistance makes the running belt A or the connecting rod 71/pedal 72 decelerate and stop quickly. In addition to having safety, it does not need motor drive and electric drive when used in various places.

Claims (7)

1. A variable damping mechanism of fitness equipment, which is arranged on a fitness equipment and has a main shaft, a first transmission rope, a first variable damping mechanism, a damping shaft, a second transmission rope, and an inertia wheel and a pulley, the variable damping mechanism includes: One side of the main rotating shaft is provided with a first speed change wheel, and a plurality of step ring grooves with different diameters are arranged on the first speed changing wheel from large to small. The main rotating shaft and the damping rotating shaft are arranged on the body and are parallel to each other and spaced set up; The first variable damping mechanism has a first variable speed regulating mechanism and the first transmission rope arranged adjacent to the first speed change wheel, the first transmission rope is wound on the first speed change wheel and the damping shaft, the first transmission rope A speed change regulating mechanism has a first bracket, at least one first pull rod, at least one first spring, a first push rod, at least one first pull cord and a first pressure cord fastener, the first bracket is fixed on the On the machine body, the first pull rod axially passes through the first bracket, the front end of the first pull rod fixes the first pull rope, the rear end of the first pull rod is sleeved with the corresponding first spring, and then the first push rod The rod is fixed on the rear end of the first pull rod to withstand the first spring, and the first pressure rope fastener is fixed on the first pull rod to press the first pulley sleeved on the first speed change wheel and the damping shaft. The transmission rope is controlled by the first pull rod and is linked with the first pull rod; The inertia wheel is arranged coaxially with the pulley at the end of the main rotating shaft away from the first transmission wheel; the second transmission rope is wound on the pulley and the damping shaft; and A first knob buckle is connected with the corresponding first pull rod through the first pull cord, so as to control the movement of the first pull rod to compress the first spring and push the corresponding push rod by the first spring after loosening. The first push rod returns, and then the first transmission rope is moved to switch on the step ring grooves of different diameters of the first speed change wheel, so as to provide speeds with different speed ratios and adjust different damping levels. 2. The variable damping mechanism of fitness equipment as claimed in claim 1, further comprising a damping device, the shaft is arranged on the damping shaft, and the first transmission rope drives the damping shaft and the damping device to rotate to increase the damping effect. size. 3. The variable damping mechanism of fitness equipment as claimed in claim 1, wherein a front end of the first support is provided with a first front baffle, a rear end of the first support is provided with a first rear baffle, The first pull rod is axially passed between the first front baffle and the first rear baffle, and the first pull rope is fixed at the end of the first pull rod passing through the first front baffle, and the first pull rod is The corresponding first spring is sheathed on a section of a pull rod passing through the first tailgate, and then the first push rod is fixed on the rear end of the first pull rod to withstand the corresponding first spring, The first spring is located between the first tailgate and the first push rod. 4. The variable damping mechanism of fitness equipment according to claim 2, wherein the damping device is a magnetic control wheel or a fan. 5 . The variable damping mechanism of fitness equipment according to claim 2 , wherein the damping device disposed on the damping shaft may comprise at least one magnetron wheel and at least one blowing fan coaxially disposed. 6. The variable damping mechanism of fitness equipment as claimed in claim 1, further comprising a second variable damping mechanism, the second variable damping mechanism is arranged on the side of the damping shaft corresponding to the second transmission rope , the second variable damping mechanism has a second speed change wheel and a second speed change regulation mechanism, the second speed change wheel is coaxially arranged on the side of the damping shaft corresponding to the second transmission rope, the second speed change regulation The mechanism is the same as that of the first speed change regulation mechanism, and the second speed change regulation mechanism has a second bracket, at least one second spring, at least one second pull rope and at least one second push rod, and the second transmission rope is wound around the first The second speed change wheel and the pulley, while the second pull cord of the second speed change regulating mechanism is extended and connected to a second knob buckle on the body to control the tightness, and is matched with the first variable damping mechanism, To expand the damping control range. 7. The variable damping mechanism of fitness equipment according to claim 1, wherein the fitness equipment is a treadmill or an exercise bike.