CN2681776Y - Loading device for sports equipment - Google Patents

Abstract

The utility model discloses a load device of sports equipment, comprising: a force cable wheel for a user to apply force to drive the rotation, an angle measuring unit for measuring the rotation angle of the force cable wheel, a control unit for the user to input a setting value and to calculate together with the output value of the angle measuring unit so as to output a variable control current as the rotation angle of the force cable wheel changes, a resistance unit for outputting a constant torque opposite to the rotation direction of the force cable wheel, and a resistance unit controlled by the control current to transmit different exercise resistances to the force cable wheel according to the size of the control current, so that the user can have the best exercise resistance as the posture changes during exercise.

Description

Loading device for sports equipment

technical field

The utility model relates to a load device, in particular to a load device installed on sports equipment

Background technique

Most of the loading devices of general sports equipment are made by hanging multiple weights. Before using the sports equipment, the user presets the number of hanging weights, and when using the sports equipment, the fixed number of weights is pulled. Moving up and down acts as resistance during exercise, but exercise equipment that uses weights as resistance is often bulky, bulky, and noisy when used.

Therefore, a loading device with the output torque of the motor as resistance as shown in Figure 1 has been developed. The force cable pulley 12 , a control unit 13 , and a resistance unit 14 and a magnetic powder clutch 15 installed in the casing 11 . The control unit 13 can be set by the user to control the output resistance direction of the resistance unit 14 to be constantly opposite to the rotation direction of the force cable pulley 12, and output a certain current to the magnetic powder clutch 15 to adjust the output to the force cable pulley 12 on the resistance size. The output torque of the resistance unit 14 is first transmitted to the magnetic powder clutch 15 . The magnetic powder clutch 15 is controlled by the output of the control unit 13 to control the magnitude of the current, and adjusts the degree of resistance output by the resistance unit 14 to interfere with the force cable pulley 12 . Before using the exercise equipment, the user can set the size of the exercise resistance on the control unit 13, and can perform training and exercise according to the set exercise resistance without adjusting the weights, and there will be no movement of the weights Noisy.

However, after the user sets the exercise resistance, all the force application process is the same exercise resistance. For example, when the stretch of the muscles is insufficient, sports injuries are likely to occur when exercising with the same exercise resistance. Taking leg raising as an example, the user sets 30 kg as the exercise resistance. When the lower leg is lifted from standing upright to the front, the knee is in a bent state, and the knee joint and ankle joint do not bear any force. At this time If you immediately lift your legs with 30 kg as the exercise resistance, it may cause damage to the knee joints and ankle joints. When the calf is lifted close to the level, the muscles are fully stretched. At this time, the calf can lift 35 to 40 kg. The exercise resistance of 30 kg may not be enough, and the exercise effect is poor.

Utility model content

The purpose of the utility model is to provide a load device that can change the exercise resistance according to the user's posture and posture during exercise.

The load device of the sports equipment of the utility model comprises: a casing, a cable pulley protruding from the casing, which can be applied by the user to drive and rotate the force-applying cable pulley, a resistance unit, and a magnetic powder clutch. The resistance unit includes a motor which is fixed in the casing and outputs a constant torque opposite to the rotation direction of the force-applying cable pulley, and a transmission part driven by the output torque of the motor is installed in the casing. The magnetic powder clutch includes a resistance collar that is rotated in conjunction with the transmission part of the resistance unit, a shaft that is installed in the resistance collar and whose outer end can be co-rotated and inserted into the shaft center of the force-applying cable pulley, and a Solenoid coil located on the outside of the resistance collar.

It is characterized in that: the load device of the sports equipment further includes: an angle measurement unit installed on the casing to measure the rotation angle of the force-applying cable pulley, and a control unit. The control unit includes a control panel for the user to input a setting value, and an output value that receives the input setting value of the control panel and the output value of the angle measurement unit and calculates it to change with the rotation angle of the force cable pulley. Computing components with different output values, and a current controller that outputs different currents as the output value of the computing component changes, the current controller outputs different currents to excite the electromagnetic coil to generate different interference resistances between the resistance collar and the rotating shaft .

The load device of the sports equipment of the utility model can download and store the proportional curves of various exercise processes through the control unit, and calculate the best exercise resistance in various action postures according to the user's set value, and use the magnetic powder The clutch transmits the output resistance of the resistance unit to the force-applying cable pulley correspondingly according to the value calculated by the control unit, which can optimize the exercise effect and prevent the user from being injured by the exercise, so it is indeed very practical and progressive.

Description of drawings

Below by preferred embodiment and accompanying drawing, the loading device of the utility model sports equipment is described in detail, in the accompanying drawing:

Figure 1 is a schematic block diagram of a general sports equipment loading device.

Fig. 2 is a side view of the embodiment of the loading device of the sports equipment of the present invention assembled on a multifunctional sports equipment.

Fig. 3 is a schematic block diagram of this embodiment.

Fig. 4 is a sectional side view of a resistance unit, a magnetic powder clutch and a force-applying cable pulley of the embodiment.

Detailed ways

As shown in Figure 2, the embodiment of the loading device 3 of the sports equipment of the present invention is matched and assembled on a sports equipment 2. The sports equipment 2 has multiple functions, and includes a stretching unit 21, a leg lifting unit 22. A jogging unit 23, and a transmission unit 24 that transmits the exercise resistance of the loading device 3 of the present invention to the above-mentioned stretching, leg raising and jogging units 21, 22, 23. The transmission unit 24 has a rope 241 for respectively pulling the stretching and leg raising units 21, 22, a plurality of belts 242 for driving the resistance of the jogging unit 23, and a plurality of pulleys 243 for changing the transmission directions of the ropes 241 and the belts 242.

3 and 4, it can be seen that the loading device 3 includes: a housing 4, a force application cable pulley 51 protruding from the housing 4 and capable of being driven and rotated by the user, and a power cable pulley 51 installed on the housing 4 An angle measurement unit 52 for measuring the rotation angle of the force-applying cable pulley 51 , a control unit 6 , a resistance unit 7 and a magnetic powder clutch 8 assembled in the housing 4 are provided.

The force cable pulley 51 is used for winding a rope 241 of the transmission unit 24. When the user operates the stretching unit 21 and the leg raising unit 22, the user pulls the rope 241 and pulls the rope 241 through the pulley 243. Change the force application direction, and finally wrap around the force application cable pulley 51 to drive the force application cable pulley 51 to rotate. While using the running unit, the belt 242 drives the force-applying cable pulley 51 to rotate. One side of the tensioning cable pulley 51 has a plurality of counting slots 511 radially extending at equal intervals and penetrating to the other side for the angle measurement unit 52 to measure the angle.

The angle measuring unit 52 senses the number of passages of the counting groove of the force-applying cable pulley in an optical counting manner, so as to know the rotation angle of the force-applying cable pulley 51 , thereby knowing the user's current posture and muscle stretching degree. Taking the leg-lifting unit 22 as an example, assuming that lifting the calf from the posture of stepping on the ground vertically to the horizontal posture can drive the force-applying cable pulley 51 to rotate half a circle about 180 degrees, and the force-applying cable pulley 51 is marked every 10 degrees. A counting slot 511 , when the angle measurement unit 52 counts to 18, it can be known that the calf has been raised to a horizontal state. There are various types of equipment for measuring the rotation angle on the market, so the implementation is not limited to the above method.

The control unit 6 includes a control panel 61 for the user to input a set value, and an input set value of the control panel 61 and an output value of the angle measurement unit 52 are received and calculated to follow the force cable pulley 51 The rotation angle change of the operation component 62 that outputs different output values, a digital-to-analog converter 63 that converts the signal type, a current controller 64 that outputs different currents with the change of the output value of the calculation component 62, and a control unit for the resistance The power driver 65 of the output resistance direction of 7. The control panel 61 can be arranged on the front side of the leg raising and stretching unit 21 or the jogging unit 23 to allow the user to conveniently control and monitor the exercise resistance value, so the number is not limited to one.

The control panel 61 can input and set the type of the use unit of the sports equipment 2 and the numerical value of the exercise resistance. The calculation component 62 is a microprocessor, which can store the ratio curves of different units such as leg raising, stretching and running, and receive the exercise type and exercise resistance value output by the control panel 61, and then compare the stored ratios curve, calculate the exercise resistance value in different posture states, and then output different exercise resistance values to the digital-to-analog converter 63 according to the change in the rotation angle value of the force cable pulley 51 measured by the angle measurement unit 52, The output exercise resistance value is a digital signal, which is converted into a category signal by the digital-to-analog converter 63 , and then sent to the current controller 64 to output different currents to the magnetic powder clutch 8 . Take leg raising as an example. Suppose the user sets 30 kg as the exercise resistance. When the lower leg is lifted from standing upright to the front, the knee is in a bent state, and the knee joint and ankle joint do not bear any force. The time control unit 6 will be based on the proportional curve of raising the leg, with 20% of 30 kilograms as the exercise resistance, and gradually increase the percentage along with the higher the height of the calf lifting. When the calf lift is close to the level and the muscles are fully stretched, the percentage can be increased to 120%, about 36 kg, so that the exercise effect of the exercise can be optimized and the occurrence of sports injuries can be avoided. The above data are only examples to illustrate the effect. The optimal proportion curves of the exercise resistance of various exercise units can be calculated by the relevant principles of ergonomics, and are not the characteristics of the present utility model. They will not be described in detail here. data is limited. When the calculation component 62 outputs the current exercise resistance value, it can also transmit the value to the control panel 61 for corresponding display for the user to monitor.

Another function of the calculation component 62 is to output the value of the angle measurement unit 52 according to the proportional curves of different units such as stretching, leg raising and running, and timely output instructions to the power driver 65 to drive the resistance unit Change the direction of the output resistance. For example, when the user uses the leg lifting and stretching unit 21, the force-applying cable pulley 51 rotates forward and reverse repeatedly, so the calculation component 62 needs to timely output instructions to change the output resistance direction of the resistance unit 7, Make the resistance constant opposite to the direction of rotation of the force-applying cable pulley 51. The calculation component 62 can also be connected with an external computer 620 to download the exercise proportion curves of different functions, so that the exercise equipment 2 can be used as a model for training different muscles or other different functions.

The resistance unit 7 is fixed in the housing 4, and includes a motor 72 driven by the power driver 65 to output a constant torque opposite to the direction of rotation of the force cable pulley 51, and a transmission driven by the output torque of the motor 72. Item 73. The transmission member 73 has a first pulley 731 and a second pulley 732 installed on the motor 72 and the magnetic powder clutch 8 respectively, and a belt 733 looped on the first and second pulleys 731 and 732 . The motor 72 timely provides resistance in opposite directions according to the training process of the user, and transmits the resistance to the magnetic powder clutch 8 through the first and second pulleys 731 , 732 and the belt 733 . The transmission member 73 is common in general mechanical structures, and there are many ways to transmit torque, so the implementation is not limited to the above-mentioned types.

The magnetic powder clutch 8 is installed in the housing 4, and includes a hollow base 80, a second pulley 732 that is rotatably accommodated in the base 80 and whose outer end is fixed to the transmission member 73. The upper resistance collar 81, an inner end shaft is installed in the resistance collar 81 and the outer end can be inserted into the rotating shaft 82 of the axis of the force cable pulley 51 in a co-rotatable manner, one is fixed on the base 80 and An electromagnetic coil 83 located outside the resistance collar 81 and connected to an output current from the current controller 64 of the control unit 6 , and a certain amount of magnetic powder 84 .

The resistance collar 81 has a shaft hole 811 axially mounted on the rotating shaft 82 , and an annular magnetic powder groove 812 radially extending from the inner peripheral surface of the shaft hole 811 to accommodate the magnetic powder 84 . A disc-shaped clutch 821 extending radially outwards and sliding in the magnetic powder groove 812 is formed on the outer peripheral surface of the rotating shaft 82 oppositely. The electromagnetic coil 83 just corresponds to the outside of the magnetic powder tank 812 of the resistance collar 81. When the current controller 64 of the control unit 6 has no output current, the carbon powder is loosely scattered in the carbon powder tank, and the clutch plate 821 can move in the magnetic powder tank 812 without interference resistance. When the current controller 64 outputs current to the electromagnetic coil 83 to energize it, the magnetic powder 84 is urged to solidify in the magnetic powder tank 812 and the clutch plate 821 is trapped in the magnetic powder tank 812 by the solidified magnetic powder 84 , resulting in an interference resistance between the resistance collar 81 and the rotating shaft 82, and the greater the current, the greater the interference resistance. It can be known from this that the magnetic powder clutch 8 can transmit the output resistance of the resistance unit 7 to the force cable pulley 51 . The magnetic powder clutch 8 is not a characteristic structure of the present invention, and its detailed structure will not be further described here.

In this way, the control unit 6 can calculate the optimal exercise resistance of the user in various training processes according to the user's setting value and the ergonomic proportional curve, and adjust the resistance unit by the output current of the control unit 6 7 is transmitted to the output resistance size of the force cable pulley 51. The effect of the exercise can be optimized, and the user can be prevented from being injured by the exercise.

Claims (5)

1. A loading device for sports equipment, comprising: a shell; A force-applying cable pulley protrudes from the casing and can be driven by the user to rotate; A resistance unit, including a motor fixed in the casing and outputting a constant torque opposite to the direction of rotation of the force-applying cable pulley, and a transmission member driven by the output torque of the motor; and A magnetic powder clutch, installed in the housing, includes a resistance ring that is rotated in conjunction with the transmission part of the resistance unit, a shaft is installed in the resistance ring and the outer end is inserted into the force-applying ring so that it can rotate in the same body. a rotating shaft at the center of the cable pulley, and an electromagnetic coil located outside the resistance collar; It is characterized in that: the loading device of the sports equipment further includes: an angle measurement unit, installed on the housing, to measure the rotation angle of the force-applying cable pulley; A control unit, including a control panel for the user to input a set value, an input set value of the control panel and an output value of the angle measurement unit are received and calculated to change with the rotation angle of the force cable pulley A computing component that outputs different output values, and a current controller that outputs different currents as the output value of the computing component changes, and the current controller outputs different currents to excite the electromagnetic coil to generate a difference between the resistance collar and the rotating shaft interference resistance. 2. The loading device of sports equipment according to claim 1, characterized in that: one side of the force-applying cable pulley has a plurality of counting grooves radially extending at equal intervals and penetrating to the other side, the angle amount The measuring unit senses the number of passages of the counting groove of the force-applying cable pulley by optical counting to convert the angle of rotation of the force-applying cable pulley. 3. The loading device of sports equipment as claimed in claim 1, wherein the control unit further includes a device assembled between the computing component and the current controller, which converts the digital output signal of the computing component into an analog signal and outputs to the digital class converter of the current controller. 4 . The loading device of sports equipment according to claim 1 , wherein the control unit further comprises a power driver whose output resistance direction of the resistance unit is controlled by the computing component to be always opposite to the rotation direction of the force-applying cable pulley. 5 . 5. The load device of sports equipment as claimed in claim 1, characterized in that: the magnetic powder clutch further includes a certain amount of magnetic powder, the resistance collar has a shaft hole mounted on the rotating shaft, and an inner shaft hole The peripheral surface extends radially outwards to accommodate the annular magnetic powder tank of the magnetic powder. The outer peripheral surface of the rotating shaft has a disc-shaped clutch piece that extends radially outward and can slide in the magnetic powder tank. The electromagnetic coil is controlled by the control unit When the output current is excited, the magnetic powder is urged to solidify in the magnetic powder groove and the clutch plate is trapped in the magnetic powder groove by the consolidated magnetic powder, resulting in an interference resistance between the resistance collar and the rotating shaft.

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