CN110893273A

CN110893273A - Isokinetic Strength Training Equipment

Info

Publication number: CN110893273A
Application number: CN201911172679.1A
Authority: CN
Inventors: 张霖; 邱彬; 郑先发; 郭志康
Original assignee: Guangzhou City And Wisdom Of Science And Technology Co Ltd
Current assignee: Guangzhou City And Wisdom Of Science And Technology Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-03-20

Abstract

The invention relates to an isokinetic muscle strength training device, comprising an operating component and an isokinetic handpiece, the operating component is fixedly connected with the isokinetic handpiece, and the isokinetic handpiece includes a driving component and a sensor component. The drive assembly includes a motor; the sensor assembly includes a rotating shaft, a fixed seat, a collection module and a conversion module; the rotating shaft is passed through the fixed seat, one end of the rotating shaft is fixedly connected with the operation assembly, and the other end is fixedly connected with the output shaft of the motor; the conversion module includes a first The coil and the second coil, the first coil and the acquisition module are electrically connected and respectively sleeved on the rotating shaft, the second coil is arranged on the fixed seat and is opposite to the first coil, the acquisition module is used to collect the torque parameters of the rotating shaft, the first coil Used to transmit torque parameters to the second coil. The invention is simple in structure and convenient in installation, not only realizes the isolation of sending and receiving signals, but also greatly prolongs the service life of the sensor assembly, and has less mechanical vibration and more stable torque measurement and transmission.

Description

Constant-speed muscle strength training equipment

Technical Field

The invention relates to the technical field of sports equipment, in particular to constant-speed muscle strength training equipment.

Background

Muscle contraction is the phenomenon of the contraction response of muscles to stimuli. Muscle contraction can be divided into three forms according to the change in muscle length and muscle tone upon contraction: isometric contraction, isotonic contraction and constant-speed contraction. The term "isokinetic contraction" as used herein refers to a type of muscle contraction in which the muscle length changes and the internal tension of the muscle also changes while the muscle contraction speed is kept constant. Because the muscle bears the compliance resistance in the isokinetic contraction, the muscle always generates the maximum muscle strength in the activity range, and therefore, the strength, the endurance and the flexibility of the muscle can be more effectively exercised. In the natural state, the muscles themselves can produce isometric and isotonic contraction, but the isokinetic contraction cannot be produced, so that special equipment is required to provide resistance which can be changed along with the muscle contraction, and the angular velocity of the muscle contraction is kept constant, and the equipment is called isokinetic muscle force equipment.

However, the conventional isokinetic muscle strength training system apparatus has technical disadvantages: the mode that generally adopts analog signal transmission measures moment of torsion or power, and is concrete, and the foil gage is pasted on the pivoted main shaft, and AD converter measuring end sets up on the control panel, and this kind of measuring method corresponds the power supply that adopts the foil gage circuit and the method that the transmission of analog signal mostly needs coaxial carbon brush contact, not only causes life weak point, and mechanical shock influences greatly, and contact failure can lead to serious measuring error moreover, and the installation degree of difficulty is great, and the transmission line overlength also makes analog signal receive the interference easily.

Disclosure of Invention

Based on this, it is necessary to provide an isokinetic muscle strength training device aiming at the problems of inconvenient installation, short service life and unstable measurement and transmission of the traditional isokinetic muscle strength training device.

An isokinetic muscle strength training device comprising an operating assembly and an isokinetic handpiece, the operating assembly being fixedly connected with the isokinetic handpiece, the isokinetic handpiece comprising a drive assembly and a sensor assembly;

the drive assembly comprises a motor; the sensor assembly comprises a rotating shaft, a fixed seat, an acquisition module and a conversion module; the rotating shaft penetrates through the fixed seat, one end of the rotating shaft is fixedly connected with the operating assembly, and the other end of the rotating shaft is fixedly connected with an output shaft of the motor;

the conversion module includes first coil and second coil, first coil with collection module electricity is connected and is established respectively in the pivot, the second coil sets up on the fixing base and with first coil is relative, collection module is used for gathering the moment of torsion parameter of pivot, first coil be used for with the moment of torsion parameter transmits to the second coil.

The constant-speed muscle strength training equipment is characterized in that the first coil is arranged on the rotating shaft, the second coil is arranged on the fixing seat, the torque parameters of the rotating shaft collected by the collecting module are collected, and the torque parameters are transmitted to the second coil through the first coil, so that the collected torque parameters are transmitted. The constant-speed muscle strength training equipment disclosed by the invention is simple in structure and convenient to install, does not need direct contact, realizes the isolation of transmitting and receiving signals, greatly prolongs the service life of a sensor assembly, and is small in mechanical vibration and more stable in torque measurement and transmission.

Drawings

FIG. 1 is a schematic structural view of an isokinetic muscle strength training apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a constant velocity handpiece in accordance with an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a constant velocity handpiece in accordance with an embodiment of the invention;

FIG. 4 is a schematic structural diagram of a sensor assembly according to an embodiment of the present invention;

fig. 5 is a schematic connection diagram of the emergency stop switch, the driver and the motor according to the embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by the following embodiments, which are taken in conjunction with the accompanying drawings.

Referring to fig. 1 to 4, an embodiment of the invention provides an isokinetic muscle strength training apparatus 100.

The isokinetic muscle strength training apparatus 100 includes an operating assembly 10 and an isokinetic handpiece 20. The manipulating assembly 10 is fixedly connected to a constant velocity handpiece 20, and the constant velocity handpiece 20 includes a driving assembly 21 and a sensor assembly 22. The drive assembly 21 includes a motor 211. The sensor assembly 22 includes a rotating shaft 221, a fixing base 222, an acquisition module 223 and a conversion module 224. The rotating shaft 221 is disposed through the fixing base 222, one end of the rotating shaft 221 is fixedly connected to the operating assembly 10, and the other end is fixedly connected to the output shaft of the motor 211. Conversion module 224 includes first coil 2241 and second coil 2242, and first coil 2241 and collection module 223 electricity are connected and are established respectively on pivot 221, and second coil 2242 sets up on fixing base 222 and relative with first coil 2241, and collection module 223 is used for gathering the torque parameter of pivot 221, and first coil 2241 is used for transmitting the torque parameter to second coil 2242.

The operating assembly 10 is fixedly disposed on the constant velocity handpiece 20, and the constant velocity handpiece 20 provides a resistance to movement of the operating assembly 10. The isokinetic muscle strength training equipment 100 provided by the embodiment of the invention can be applied to the technical field of medical rehabilitation, so that a user can perform isokinetic muscle strength rehabilitation training. In one embodiment, the operating assembly 10 includes an operating member fixedly connected to the constant velocity handpiece 20 and a fixing member fixedly connected to the fixing member, the operating member being for fixing a limb of a user, for example, for the user to hold or wear. In one example, the operating member is a clamping wrist strap. When a user applies force through the operating assembly 10, the isokinetic handpiece 20 applies an opposing resistance to movement of the operating assembly 10, thus achieving isokinetic training. Taking the leg fixation as an example, the user fixes the leg on the operation member to perform the sitting position extension/flexion training of the knee joint, the prone position extension/flexion of the knee joint, the tibia internal rotation/external rotation training of the knee joint, and the like.

The constant velocity handpiece 20 includes a drive assembly 21 and a sensor assembly 22. The drive assembly 21 is used to drive the operating assembly 10 to apply resistance to movement, and the sensor assembly 22 is used to collect the force applied by the user to the operating assembly 10.

Specifically, the drive assembly 21 includes a motor 211. In one embodiment, the driving assembly 21 further includes a speed reducer 212, and the speed reducer 212 is used for reducing the rotation speed of the motor 211 to improve the output torque of the motor 211 and improve the accuracy and reliability of driving of the motor 211.

The sensor assembly 22 includes a rotating shaft 221, a fixing base 222, an acquisition module 223 and a conversion module 224. The rotating shaft 221 is inserted into the fixing base 222, the fixing base 222 is fixedly connected with the housing 23 of the constant velocity machine head 20, and the rotating shaft 221 can rotate relative to the fixing base 222. One end of the rotating shaft 221 is fixedly connected to the operating assembly 10, and the other end is fixedly connected to the output shaft of the motor 211, so that when the motor 211 is started, the output shaft of the motor 211 drives the rotating shaft 221 to rotate in a clockwise direction or a counterclockwise direction. The isokinetic handpiece 20 applies an opposing resistance to movement of the operating assembly 10 when the user's limb applies a force through the operating assembly 10, thus allowing isokinetic training.

In the process, the acquisition module 223 arranged on the rotating shaft 221 acquires the torque parameter of the rotating shaft 221 and transmits the torque parameter to the first coil 2241 on the same rotating shaft 221, and then the first coil 2241 transmits the torque parameter to the second coil 2242, which is located on the fixed base 222 and opposite to the first coil 2241, through electromagnetic induction. The first coil 2241 and the second coil 2242 may be opposite to each other in a manner that they are concentric and partially staggered. Therefore, the collected torque parameters on the rotating shaft 221 are transmitted to the external circuit on the fixed seat 222, and the physical isolation of the transmitted and received signals is realized.

The constant-speed muscle strength training device 100 is characterized in that the first coil 2241 is arranged on the rotating shaft 221, the second coil 2242 is arranged on the fixed seat 222, the collected torque parameters of the rotating shaft 221 are collected by the collecting module 223, and the torque parameters are transmitted to the second coil 2242 through the first coil 2241, so that the collected torque parameters are transmitted. The constant velocity muscle strength training device 100 of the present invention has a simple structure and is easy to install, not only does not require direct contact, realizes isolation of transmission and reception signals, and greatly prolongs the service life of the sensor assembly 22, but also has small mechanical vibration and more stable torque measurement and transmission.

Referring to fig. 1, in one embodiment, the isokinetic muscle strength training device 100 further includes a main board 30, the main board 30 is provided with a frequency capture interface, the frequency capture interface is electrically connected to the second coil 2242, and the main board 30 is configured to process the torque parameter transmitted by the second coil 2242.

The second coil 2242 is connected to the frequency capture interface by a wire, as shown in fig. 4, and the second coil 2242 is connected to the frequency capture interface by a wire 225 of the outlet. In one example, the main board 30 calculates the torque of the shaft 221 after receiving the torque parameter through the frequency capture interface.

In one embodiment, the acquisition module 223 includes a strain gauge and an acquisition chip. The strain gauge is used for acquiring a strain signal of the rotating shaft 221, and the acquisition chip is used for converting the strain signal into a frequency signal. The sensor assembly 22 further includes a coil base 226, the coil base 226 is sleeved on the rotating shaft 221, the first coil 2241 is wound on the coil base 226 and electrically connected to the collecting chip, and the second coil 2242 is wound on the inner wall of the fixing base 222 and opposite to the first coil 2241.

Wherein, before the conversion, the torque data is a strain signal, and after the conversion, the torque data is a frequency signal. The frequency signal is used to calculate the torque of the rotating shaft 221. First coil 2241 sends frequency signal to second coil 2242 through electromagnetic induction, and after mainboard 30 received frequency signal through the frequency seizure interface, according to the corresponding relation between frequency and the moment of torsion, the frequency signal of will second coil 2242 transmission converts into torque data.

In one embodiment, the correspondence between frequency and torque is as follows:

M＝(f-1000)/10

wherein M is torque and f is frequency.

In other embodiments, the correspondence between the frequency and the torque may also be calculated according to the specific type of the isokinetic muscle strength training apparatus 100, and is not limited herein.

The coil holder 226 is used to fix the first coil 2241. Specifically, the coil base 226 is sleeved on the rotating shaft 221, the first coil 2241 is wound on the coil base 226, and the second coil 2242 is wound on the inner wall of the fixing base 222 and opposite to the first coil 2241. When the rotating shaft 221 rotates, the coil holder 226 rotates along with the rotating shaft 221, and the fixing base 222 is stationary relative to the rotating shaft 221, so that the first coil 2241 on the coil holder 226 rotates relative to the second coil 2242. In the use, user's limbs are to the pivot 221 application of force, the moment of torsion of pivot 221 and output strain analog signal are gathered to the foil gage, gather the strain analog signal that the chip will be output and convert frequency signal into, then send to first coil 2241, under the electromagnetic induction cooperation of first coil 2241 and second coil 2242, frequency signal transmits second coil 2242 from first coil 2241, so in order to realize the isolation of receiving and dispatching signals, avoid causing wearing and tearing because of the method of coaxial carbon brush contact to torque sensor.

In one embodiment, the coil holder 226 has a groove formed therein, and the first coil 2241 is wound in the groove. Thus, the first coil 2241 can rotate along with the rotating shaft 221, and the wound first coil 2241 is not scattered due to the rotation of the rotating shaft 221, so that the first coil 2241 is protected.

In one embodiment, the coil holder 226 is made of an insulating material. Thus, to prevent a short circuit with the first coil 2241.

In one embodiment, the conversion module 224 further includes a third coil 2243, a fourth coil 2244, a first conversion module, and a second conversion module. The third coil 2243 and the first conversion module are both disposed on the rotation shaft 221. The input end of the first conversion module is electrically connected with the third coil 2243, and the output end of the first conversion module is electrically connected with the acquisition module 223 for converting alternating current into direct current. Fourth coil 2244 and second conversion module all set up on fixing base 222, and fourth coil 2244 is relative with third coil 2243, and direct current power supply is connected for the electricity to the input of second conversion module, and fourth coil 2244 is connected to the output electricity of second conversion module for convert direct current power supply's direct current into the alternating current.

Third and

fourth coils

2243 and 2244 are charging coils. The third coil 2243 and the fourth coil 2244 may be opposite to each other in such a manner that they are concentric and partially staggered. The first conversion module comprises an alternating current to direct current voltage stabilizing circuit and is used for converting alternating current into direct current. The second conversion module comprises a direct current-alternating current conversion circuit and is used for carrying out voltage reduction output on input voltage. Specifically, the input end of the second conversion module is electrically connected to a direct current power supply, and the output end of the second conversion module is electrically connected to the fourth coil 2244, so that direct current power of the direct current power supply is converted into alternating current power and output to the fourth coil 2244. Fourth coil 2244 is opposite to third coil 2243, and when fourth coil 2244 has alternating current flowing therethrough, fourth coil 2244 causes alternating current to be generated in third coil 2243 by electromagnetic induction. The ac power of the third coil 2243 is converted into dc power by the first conversion module, thereby supplying power to the acquisition module 223.

In one embodiment, the coil holder 226 has two slots formed therein, and the two slots are spaced apart from each other. A first coil 2241 is wound in one of the grooves, and a third coil 2243 is wound in the other groove.

As such, to provide both securing and protective isolation for the first coil 2241 and the second coil 2242.

Referring to fig. 2 and 3, in one embodiment, the isokinetic handpiece 20 further includes a housing 23, and the drive assembly 21 and the sensor assembly 22 are disposed within the housing 23. The constant velocity muscle strength training device 100 further comprises a limiting assembly 40, wherein the limiting assembly 40 comprises a limiting part 41 and a limiting insertion plate 42. The limiting insertion plate 42 is fixed on the shell 23, and the rotating shaft 221 penetrates through the limiting insertion plate 42 and extends out of the shell 23 to be fixedly connected with the operation assembly 10. The limiting insertion plate 42 is provided with a limiting hole 43, and the limiting member 41 is inserted into the limiting hole 43 to limit the rotation angle of the operating assembly 10.

The limit inserting plate 42 is fixed on the shell 23. When the rotating shaft 221 rotates, the operating assembly 10 rotates relative to the housing 23, and the limit insertion plate 42 is stationary relative to the housing 23. The limiting hole 43 is used for presetting an angle range of rotation of the operating assembly 10, and when the limiting member 41 is inserted into the limiting hole 43 of the limiting insertion plate 42, the limiting member 41 blocks the operating assembly 10 from rotating, so as to limit the angle of rotation of the operating assembly 10.

In one embodiment, the retaining insert plate 42 is circular in cross-section. The limiting holes 43 are axially and symmetrically distributed on the limiting inserting plate 42 by taking the circle center as the center.

In one embodiment, the retaining insert plate 42 is formed with a scale for indicating the angle at which the assembly 10 is operated. For example, with the 12 o' clock position as the zero scale, if the training angle of the user is 50 degrees, the limiting member 41 is inserted into the limiting hole 43 of 50 degrees, so that the rotation angle of the operating assembly 10 is limited to 0 degree to 50 degrees.

Referring to fig. 3, in one embodiment, the position-limiting member 41 includes a plug portion 411, a holding portion 412 and an elastic sleeve 413. The inserting portion 411 is connected with the holding portion 412, the inserting portion 411 is inserted into the limiting hole 43, and the elastic sleeve 413 is sleeved on the holding portion 412.

The elastic sleeve 413 is used for buffering the impact of the falling of the position limiting member 41 or the reciprocating rotation of the operating assembly 10 on the position limiting member 41, so as to prolong the service life of the position limiting member 41, and certainly, can also buffer the impact of the position limiting member 41 on the limbs of the user in abnormal conditions.

In one embodiment, the limiting insertion plate 42 is made of metal, and the insertion portion 411 is a magnetic insertion portion.

The metal material includes metals and their alloys, such as aluminum, iron, stainless steel, etc. Because the inserting part 411 is made of a magnetic material and has magnetism, when the inserting part 411 is inserted into the limiting insertion plate 42 made of a metal material, the magnetic force is tightly absorbed and fixed to prevent the limiting part 41 from accidentally falling due to gravity, vibration and the like, so that the limiting function of the limiting part 41 is firmer.

In one embodiment, the cross-sectional area of the grip portion 412 is larger than the cross-sectional area of the plug portion 411. Thus, when the inserting portion 411 is inserted into the limiting hole 43 and the holding portion 412 abuts against the inserting panel, it indicates that the inserting portion 411 is installed in place.

In one embodiment, the elastomeric sleeve 413 is made of an elastomeric plastic.

Referring to fig. 2, in one embodiment, a plug seat 231 is further disposed on the housing 23 for inserting the position-limiting member 41.

When the limiting member 41 is used, the limiting member 41 is inserted into the limiting hole 43. When the position-limiting element 41 is idle, the position-limiting element 41 is inserted into the pin seat 231 to prevent the position-limiting element 41 from being lost. As shown in fig. 2, the stopper 41 is inserted into the latch base 231, indicating that the constant velocity muscle strength training apparatus 100 is in an idle state.

Referring to fig. 3, in one embodiment, the isokinetic muscle strength training device 100 further includes a limit detection assembly 50, and the limit detection assembly 50 includes a limit detection module 51. The limit detection module 51 is disposed on the limit inserting plate 42 and corresponds to the limit hole 43, and is configured to output a detection signal when detecting that the limiting member 41 is inserted into the limit hole 43.

The limit detection assembly 50 is arranged on the limit inserting plate 42. Specifically, the limit detection module 51 corresponds to the limit hole 43, one port of the limit hole 43 is provided with the limit detection module 51, and the limiting member 41 is inserted from the other port of the limit hole 43. When the limiting members 41 are detected to be inserted into the corresponding limiting holes 43, the limiting detection assembly 50 outputs corresponding detection signals. At this time, the stopper 41 is mounted in place, that is, the stopper 41 does not fall off or is not artificially inserted. So, through increasing spacing detection subassembly 50, can real-time detection locating part 41 correctly insert spacing hole 43 to avoid appearing the unexpected condition such as fall, artificial hourglass insert, mistake and insert of locating part 41, and need not the manual work and judge whether correctly insert locating part 41, make spacing detection function more intelligent.

In one embodiment, the limit detection module 51 is electrically connected to the main board 30, and the main board 30 is configured to process a detection signal output by the limit detection module 51 and generate a corresponding prompt, such as a correct installation prompt, an incorrect installation prompt, an missed insertion prompt, and the like.

In one embodiment, the limit detection module 51 comprises a capacitive sensing module.

When the limiting members 41 are inserted into the corresponding limiting holes 43, the capacitance of the capacitance sensing module changes, so as to output a detection signal. Because the capacitance sensing module has a simple structure and low manufacturing cost, the capacitance sensing module is adopted as the limit detection module 51, so that the cost of the limit detection function is low.

Of course, in other embodiments, the limit detection module 51 may also be an infrared sensing module or an ultrasonic sensing module, which is not limited herein.

Referring to fig. 2 and 3, in one embodiment, the isokinetic muscle strength training device 100 further includes a lamp panel assembly 60, and the lamp panel assembly 60 includes an indicator light 61 and an indicator light holder 62. The indicator lamp 61 is arranged on the indicator lamp holder 62, the indicator lamp holder 62 and the limit detection module 51 are respectively arranged on two sides of the limit inserting plate 42, and the indicator lamp 61 is used for indicating the current angle of the operation assembly 10.

When the operation component 10 rotates to the indicator lamp 61 at the corresponding position, the corresponding indicator lamp 61 is turned on, so that the moving position of the operation component 10 is displayed in real time, and the operation component can be used for reminding a user of whether the user moves to the end point of the set range. For example, the current angle of the operating assembly 10 is 30 degrees, and the indicator light 61 at the position corresponding to 30 degrees is turned on; for another example, if the current angle of the operating member 10 is 70 degrees, the indicator lamp 61 at the position corresponding to 70 degrees is turned on.

Further, the indicator light 61 can be used to indicate other information in addition to the current angle of the operating assembly 10.

In one of the embodiments, the indicator light 61 is also used for zero point indication. When the zero point calibration is being performed, the indicator lamp 61 at the 0 degree position is turned on, prompting the user to manually turn the operating assembly 10 to this position.

In another embodiment, the indicator light 61 is also used to indicate the insertion of the position-limiting member 41. Specifically, the limit detection module 51 is electrically connected to the main board 30, and the main board 30 is electrically connected to the indicator light 61. After the rotation range of the operating assembly 10 is set, the indicator lamp 61 at the corresponding position flashes to prompt the user to insert the limiting member 41 into the corresponding limiting hole 43, and if the main board 30 detects the detection signal, the indication lamp 61 is controlled to stop flashing.

In one embodiment, the indicator light 61 is also used as an indication of the rest time in the mode switch. Specifically, if predetermine the whole scintillation of pilot lamp 61 in the rotation range, can instruct the user to have a rest, if predetermine the whole scintillation that stops of pilot lamp 61 in the rotation range, can instruct the user to continue the training.

Referring to fig. 2, in one embodiment, the indicator light 61 includes a plurality of indicator lights, the limiting hole 43 includes a plurality of limiting holes, the limiting detection module 51 includes a plurality of limiting holes, the positions of the limiting holes 43 correspond to the positions of the indicator lights 61 one to one, and the positions of the limiting detection module 51 correspond to the positions of the limiting holes 43 one to one.

The number of the indicator lights 61, the limiting holes 43 and the limiting detection modules 51 corresponds, and the positions also correspond. For example, the number of the indicator lights 61 is eight, one indicator light 61 has a 12-point direction as a zero scale, and the remaining seven indicator lights 61 are respectively arranged at positions of 1-point half, 3-point half, 4-point half, 5-point half, 6-point half, 8-point half, and 10-point half. Correspondingly, the number of the limiting holes 43 and the limiting detection modules 51 is eight, and the limiting holes and the limiting detection modules correspond to the distribution positions of the indicator lights 61 one by one. In this way, an appropriate limiting hole 43 can be selected according to the training mode, so as to limit the rotation angle range of the operating assembly 10, and the plurality of limiting detection modules 51 can also detect whether the limiting member 41 at any position is correctly installed, and the indicator light 61 can indicate the related information of the operating assembly 10.

In this embodiment, the indicator light 61 is first packaged on the indicator light holder 62, and then the indicator light holder is installed on the limiting insertion plate 42, and the limiting detection module 51 is installed on the limiting insertion plate 42 from the other side of the limiting insertion plate 42, so that the structure is compact.

Referring to fig. 5, in one embodiment, the isokinetic muscle strength training device 100 further includes an emergency stop switch K1, and the driving assembly 21 further includes a driver 213, wherein the driver 213 is used for driving the motor 211 to operate. The driver 213 includes a safety interface, and the emergency stop switch K1 is electrically connected to the safety interface.

Referring to fig. 5, the driver 213 includes three secure interfaces: SF1+ interface, SF 1-interface, and SF 2-interface. The emergency stop switch K1 can be electrically connected to any one of the safety interfaces to control whether the motor 211 stops operating. For example, the SF1+ interface is connected with a +5V power supply, and the emergency stop switch K1 is connected in series between the SF1+ interface and the power supply; or the emergency stop switch K1 is connected in series between the SF 1-interface and the SF 2-interface; or, the emergency stop switch K1 is connected in series in the ground loop of the SF 2-interface. When an abnormal condition occurs, the user can directly disconnect the safety interface loop of the driver 213 through the emergency stop switch K1, so that the motor 211 can stop running in time.

In one embodiment, the number of the emergency stop switches K1 is 2, and each emergency stop switch K1 is connected to two safety interfaces, such as an SF1+ interface and an SF2+ interface, respectively. When any one of the buttons of the emergency stop switch K1 is pressed, the driver 213 stops the motor 211.

In one embodiment, the emergency stop switch K1 is further used for being electrically connected with the main board 30, the emergency stop switch K1 sends an abnormal signal to the main board 30, and the main board 30 controls other devices to stop running and controls the alarm device to give an alarm. The user can manually release the emergency stop state.

In one embodiment, the scram switch K1 is a hand-held self-locking scram button. When the equipment is abnormal, a user immediately disconnects the safety interface loop of the driver 222 by operating the handheld self-locking emergency stop button, so that the motor 211 stops running in time.

Referring to fig. 1, in one embodiment, the isokinetic muscle strength training device 100 further includes a display screen 70, the display screen 70 is electrically connected to the main board 30, and the display screen 70 is used for displaying the processed result of the main board 30.

The display screen 70 is used for displaying the processed result of the main board 30, such as the magnitude of the torque generated by the user training in real time, the difference value from the preset torque, and the like.

In one embodiment, the main board 30 is further configured to process the torque data outputted from the second coil 2242 and load the virtual scene interaction game training.

The user can simultaneously exercise the virtual interactive scene game on the display screen 70 while operating the operating unit 10. For example, the virtual scene interactive game training is shown as a curve advancing, a plurality of coins are arranged on the curve, when the operating assembly 10 rotates to the end point of the preset angle range, the training result is judged according to the accumulated coins, and if the number of the coins is more, the training is more accurate. Therefore, by adding virtual scene interactive game training, the condition that the training function of the conventional constant-speed equipment is boring is changed, the training feedback, the interestingness and the interactivity are enhanced, and the training intention of a user is enhanced.

Referring to fig. 1, in one embodiment, the constant velocity muscle strength training apparatus 100 further includes a constant velocity case 80, the constant velocity handpiece 20 is mounted on the constant velocity case 80, and the main board 30 is accommodated in the constant velocity case 80. Thus, the constant velocity case 80 can provide protection for the motherboard 30 against water, dust, and the like.

With continued reference to fig. 1, in one embodiment, the isokinetic muscle strength training apparatus 100 further comprises an isokinetic chassis 80, a first rotary lifting mechanism 90, a seat moving mechanism 110, a running base 120, a seat 130, and a seat adjusting mechanism 140. The constant velocity machine head 20 is disposed on the constant velocity machine case 80 through the first rotary lifting mechanism 90, and a first indicating member (not shown) for indicating a current angle and/or a current height of the constant velocity machine head 20 is disposed on the constant velocity machine case 80. The seat 130 is movably arranged on the running base 120 through the seat moving mechanism 110; a second indicator is provided on the motion base 120 for indicating the current position of the seat 130. The seat 130 comprises a cushion and a back cushion, and the seat adjusting mechanism 140 is used for adjusting an included angle between the cushion and the back cushion; the seat adjusting mechanism 140 is provided with a third indicator for indicating an angle between the seat cushion and the back cushion.

Before using the isokinetic muscle strength training apparatus 100, positional parameters of the isokinetic muscle strength training apparatus 100, such as isokinetic head inclination angle, isokinetic head rotation angle, dynamometer height, seat lateral distance, seat back inclination angle, seat rotation angle, seat height, etc., need to be calibrated so that the apparatus is in a suitable measurement state, which if not calibrated, may cause the apparatus to acquire data with errors. Of course, the device may also recommend appropriate location parameters via the display screen 70 based on the particular training mode. However, existing constant velocity devices typically require manual calibration, which is subject to error and does not facilitate the user in adjusting the device to the proper position.

In this embodiment, the first rotary lifting mechanism 90 can be rotated or lifted to position the constant velocity head 20 at different angles and heights. By providing the first indicator on the constant velocity case 80, the first indicator can indicate the current angle, the current height, or both of the constant velocity head 20. For example, the current angle of the constant velocity handpiece 20 is 15 degrees, and the user may adjust the constant velocity handpiece 20 to 0 degrees against the first indicator. In one example, the first rotary lifting mechanism 90 includes a locking mechanism for locking the rotation angle of the first rotary lifting mechanism. The locking mechanism is controlled by a remote control handle provided with the isokinetic muscle strength training apparatus 100 to prevent automatic rotation or elevation of the first rotary elevating mechanism 90.

The seat moving mechanism 110 includes a power push rod disposed at the bottom of the seat 130 and is movable on the operation base 120. By providing a second indicator on the travel base 120, the second indicator may indicate the current position of the seat 130. For example, in the hand training mode, if the required lateral distance between the seat 130 and the constant velocity housing 80 is small, the seat 130 is adjusted to a position where the second indicator value is small; in the leg training mode, the seat 130 is adjusted to a position where the second indicator value is greater if the required lateral distance of the seat 130 from the constant velocity case 80 is greater.

By providing the third indicator on the seat adjusting mechanism 140, the third indicator can indicate the included angle between the seat cushion and the back pad, which is convenient for the user to adjust the angle between the seat cushion and the back pad according to the training mode. In one embodiment, the seat adjustment mechanism 140 is a manual adjustment mechanism for controlling the angle between the seat cushion and the back cushion.

In one embodiment, the first indicator and the third indicator are dials and the second indicator is a scale.

In one embodiment, the isokinetic muscle strength training device 100 further includes a laser sensor disposed on the operating assembly 10 and configured to detect a limb of the user.

When a user sits on the chair and the limb is placed on the operating assembly 10, the laser emitted by the laser sensor is directed at the axis of rotation of the limb by adjusting the position of the chair, so that the measurement of the limb of the user is more accurate. Taking the knee as an example, the user sits on a seat, places his legs on the operating assembly 10, and aligns the emitted laser light with the axis of rotation of the knee by adjusting the position of the seat.

In one embodiment, the isokinetic muscle strength training device further comprises a second rotation mechanism for adjusting the height of the seat.

In one example, the second rotation mechanism includes a locking mechanism for locking the rotation angle of the second rotation mechanism. The locking mechanism is controlled by a remote control handle provided with the isokinetic muscle strength training apparatus 100, preventing automatic rotation of the second rotating mechanism.

In one embodiment, the display screen 70 is further used for displaying the current parameters of the isokinetic muscle strength training apparatus 100, such as the position parameters (isokinetic head inclination angle, isokinetic head rotation angle, dynamometer height, seat lateral distance, seat back inclination angle, seat rotation angle, seat height, etc.), so as to let the user know the operation condition of the apparatus more closely, thereby greatly reducing the confusion of the user during calibration and improving the user experience.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. an isokinetic muscle training equipment, is characterized in that, comprises operating assembly and isokinetic handpiece, and described operating component is fixedly connected with described isokinetic handpiece, and described isokinetic handpiece comprises:

drive components, including motors; and

The sensor assembly includes a rotating shaft, a fixed base, a collection module and a conversion module; the rotating shaft is passed through the fixed base, one end of the rotating shaft is fixedly connected with the operating assembly, and the other end is fixedly connected with the output shaft of the motor ;

The conversion module includes a first coil and a second coil, the first coil and the acquisition module are electrically connected and respectively sleeved on the rotating shaft, and the second coil is arranged on the fixed seat and is connected with the The first coil is opposite to the first coil, the acquisition module is used to collect the torque parameter of the rotating shaft, and the first coil is used to transmit the torque parameter to the second coil.

2. isokinetic muscle training equipment according to claim 1, is characterized in that, described isokinetic muscle training equipment also comprises mainboard, described mainboard is provided with frequency capture interface, described frequency capture interface and described The second coil is electrically connected, and the main board is used for processing the torque parameter transmitted by the second coil.

3. The isokinetic muscle strength training device according to claim 1 or 2, wherein the acquisition module comprises a strain gauge and a collection chip, the strain gauge is used to collect the strain signal of the rotating shaft, and the collection The chip is used for converting the strain signal into a frequency signal;

The sensor assembly further includes a coil seat, the coil seat is sleeved on the rotating shaft, the first coil is wound on the coil seat and is electrically connected to the acquisition chip, and the second coil is wound on on the inner wall of the fixed seat and opposite to the first coil.

4. The isokinetic muscle training equipment according to claim 1 or 2, wherein the conversion module further comprises a third coil, a fourth coil, a first conversion module and a second conversion module;

The third coil and the first conversion module are both arranged on the rotating shaft; the input end of the first conversion module is electrically connected to the third coil, and the output end of the first conversion module is electrically connected to the The acquisition module is used to convert alternating current into direct current;

The fourth coil and the second conversion module are both arranged on the fixing base, and the fourth coil is opposite to the third coil; the input end of the second conversion module is used to electrically connect the DC power supply, The output end of the second conversion module is electrically connected to the fourth coil for converting the direct current of the direct current power source into alternating current.

5. The isokinetic muscle strength training equipment according to claim 1 or 2, wherein the isokinetic handpiece further comprises a casing, and the drive assembly and the sensor assembly are both arranged in the casing;

The isokinetic muscle strength training equipment further includes a limit component, and the limit component includes a limit piece and a limit insert; the limit insert is fixed on the casing, and the rotating shaft passes through the limit. a position plug board, which is extended from the casing to be fixedly connected with the operating assembly;

The limiting insert plate defines a limiting hole, and the limiting member is used to be inserted in the limiting hole to limit the rotation angle of the operating assembly.

6. The isokinetic muscle strength training equipment according to claim 5, wherein the limiting member comprises a plug portion, a grip portion and an elastic sleeve;

The inserting part is connected with the holding part, the inserting part is used to be inserted into the limiting hole, and the elastic sleeve is sleeved on the holding part; The plug-in board is made of metal material, and the plug-in part is a magnetic plug-in part.

7. The isokinetic muscle strength training equipment according to claim 5, wherein the isokinetic muscle strength training equipment further comprises a limit detection component, and the limit detection component includes a limit detection module;

The limit detection module is arranged on the limit board and corresponds to the limit hole, and is used for outputting a detection signal when it is detected that the limit member is inserted into the limit hole.

8. The isokinetic muscle strength training equipment according to claim 7, wherein the isokinetic muscle strength training equipment further comprises a light board assembly, and the light board assembly comprises an indicator light and an indicator light seat, and the indication The indicator light is arranged on the indicator light seat, the indicator light seat and the limit detection module are respectively arranged on both sides of the limit insertion board, and the indicator light is used to indicate the current angle of the operation component.

9 . The isokinetic muscle strength training equipment according to claim 8 , wherein the indicator light comprises a plurality of lights, the limit hole comprises a plurality of the limit holes, the limit detection module comprises a plurality of The position of the position hole corresponds to the position of the indicator light one-to-one, and the position of the limit detection module corresponds to the position of the position limit hole one-to-one.

10. The isokinetic muscle strength training equipment according to claim 1 or 2, wherein the isokinetic muscle strength training equipment further comprises an emergency stop switch, and the drive assembly further comprises a driver, and the driver is used for driving The motor operates; the driver includes a safety interface, and the emergency stop switch is electrically connected to the safety interface.

11. isokinetic muscle training equipment according to claim 2, is characterized in that, described isokinetic muscle training equipment also comprises display screen, described display screen is electrically connected with described main board, and described display screen is used for. The result of the processing of the motherboard is displayed.

12. The isokinetic muscle training equipment according to claim 1 and 2, wherein the isokinetic muscle training equipment also comprises an isokinetic chassis, a first rotating lifting mechanism, a seat moving mechanism, a running base, Seats and seat adjustment mechanisms;

The constant velocity machine head is arranged on the constant velocity chassis through the first rotating lifting mechanism; the constant velocity chassis is provided with a first indicator, and the first indicator is used to indicate the constant velocity machine the current angle and/or current height of the head;

The seat is movably arranged on the running base through the seat moving mechanism; a second indicator is provided on the running base, and the second indicator is used to indicate the current position of the seat;

The seat includes a seat cushion and a back cushion, and the seat adjustment mechanism is used to adjust the angle between the seat cushion and the back cushion; the seat adjustment mechanism is provided with a third indicator, the first Three indicating pieces are used to indicate the included angle between the seat cushion and the back cushion.