CN113082625B

CN113082625B - Leg pressing device for dance exercise and using method

Info

Publication number: CN113082625B
Application number: CN202110370627.6A
Authority: CN
Inventors: 王彧; 许艳; 杨洋; 程万军; 丁冰; 罗春林
Original assignee: Harbin Institute of Physical Education
Current assignee: Harbin Institute of Physical Education
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2022-02-01
Anticipated expiration: 2041-04-07
Also published as: CN113082625A

Abstract

A leg pressing device for dance practice and a using method thereof comprise a frame part and a pressing part, wherein the frame part comprises a frame, pedals, a spline shaft, a friction wheel, a friction disk, a first spring, a rubber band, a first motor and a first motor base, the pressing part comprises a pressing frame, a pressing rod, a pushing block, a moving rod, a pressing sleeve, a cam shaft, a second motor base, a third motor base and a second spring, the frame front portion has the spout, has 2 rubber band fixed orificess of symmetrical arrangement in the middle of the spout, and the frame both sides respectively have 1 stand, and every stand upper portion has spline plain shaft hole, has the back in the middle of the frame, and back upper portion has lead screw lower hole, and lead screw lower hole both sides respectively have 1 guide arm No. one, and guide arm upper portion has the lead screw upper hole, and the pedal lower part has the pedal slider, and the pedal side has the pedal hole, and the integral key shaft both sides have the spline optical axis.

Description

Leg pressing device for dance exercise and using method

Technical Field

The invention relates to the field of sports equipment, in particular to a leg pressing device for dance practice and a using method of the leg pressing device.

Background

In dance training process, the leg pressing training is an important content, and the leg pressing training needs to be progressive, otherwise can pull the muscle of hindering the shank, and the trainer of present shank mostly leans on artifical or simple device to go on, and training efficiency is not high, and training effect is not good, and machine training often leads to the fact the injury to the training person again.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a dance training leg pressing device which is gradual, safe and controllable and a using method thereof.

The purpose of the invention is realized by the following technical scheme:

a leg pressing device for dance practice comprises a frame part and a pressing part, wherein the frame part comprises a frame, pedals, a spline shaft, a friction wheel, a friction disc, a spring, a rubber band, a motor and a motor base, the pressing part comprises a pressing frame, a pressing rod, a pushing block, a moving rod, a pressing sleeve, a cam shaft, a motor base and a spring base, the front part of the frame is provided with a sliding chute, the middle of the sliding chute is provided with 2 rubber band fixing holes which are symmetrically arranged, two sides of the frame are respectively provided with 1 stand column, the upper part of each stand column is provided with a spline smooth shaft hole, the middle of the frame is provided with a backrest, the upper part of the backrest is provided with a lead screw lower hole, two sides of the lead screw lower hole are respectively provided with 1 guide rod, the upper part of the guide rod is provided with a lead screw upper hole, the lower part of each pedal is provided with a pedal sliding block, the side of each pedal is provided with a pedal hole, two sides of each spline smooth shaft are provided with a spline smooth shaft, the middle of the friction wheel is provided with a spline hole, the lower part of the friction disk is provided with a first lead screw, the two sides of the first lead screw are respectively provided with a first lead screw shaft, the two sides of a rubber band fixing hole are respectively provided with 1 pedal, a pedal slider is slidably connected with a sliding groove, the pedal slider slides in the sliding groove, the two sides of the rubber band are respectively fixedly connected with a pedal hole and a rubber band fixing hole, the first lead screw shaft at the lower part is rotatably connected with a lead screw lower hole, the first lead screw shaft at the upper part is rotatably connected with a lead screw upper hole, the lead screw lower hole and the lead screw upper hole are coaxial, the first lead screw shaft rotates in the lead screw lower hole and the lead screw upper hole, the spline optical axis is rotatably connected with a spline optical axis hole, the spline optical axis rotates in the spline optical axis hole, the spline hole is slidably connected with a spline shaft, the first spring is sleeved on the left side of the spline shaft, the first spring supports the right side of the friction wheel, the left side of the first spring supports the left side of the stand, the right side of the spline optical axis passes through a shaft and is fixedly connected with a first motor, a motor seat is fixedly connected to the lower portion of the first motor, the first motor seat is fixedly connected with the stand column, and the friction wheel is connected with the friction disc.

The middle of the compression frame is provided with a first nut, two sides of the first nut are respectively provided with 1 first guide rod hole, the rear side of the first nut is provided with a movable rod guide groove, the lower part of the compression frame is provided with 2 bilaterally symmetrical vertical rods, the lower part of each vertical rod is provided with a camshaft hole, the lower part of the camshaft hole is provided with a pressure rod guide groove, the front side of each vertical rod is provided with a second guide rod, the front part of the second guide rod is provided with a bilaterally symmetrical second guide rod hole, two sides of each pressure rod are provided with bilaterally symmetrical 2 pressure rod arms, the front part of each pressure rod arm is provided with a clamping sleeve shaft, the middle of the push block is provided with a second guide rod hole, one side of the second guide rod hole is provided with a second nut, the lower part of the movable rod is provided with a cam rod, the upper part of the movable rod is provided with a positioning block, the upper part of the positioning block is provided with a movable groove, the upper part of the compression sleeve is provided with a compression sleeve hole, two sides of the second guide rod are rotatably connected with a second guide rod hole, and the second guide rod rotates in the second guide rod hole, no. two nuts of No. two lead screw threaded connection, No. two guide arms of No. two guide rod hole sliding connection, No. two motor of No. three lead screw right sides through shaft coupling fixed connection, No. three motor cabinet of No. three motor upper portion fixed connection, No. three motor cabinet fixed connection compress tightly the frame right flank.

The movable rod is connected with the movable rod guide groove in a sliding mode, the movable rod slides in the movable rod guide groove, the positioning block is placed on the upper side of the movable rod guide groove, the movable groove is clamped on two sides of the friction wheel, the cam shaft is connected with the cam shaft hole in a rotating mode, the cam shaft rotates in the cam shaft hole, the cam shaft is fixedly connected with the cam hole in the middle of the cam shaft, the right side of the cam shaft is fixedly connected with a second motor through a coupler, the second motor is fixedly connected with a second motor base, and the second motor base is fixedly connected with a vertical rod side face.

The two sides of the pressure rod are slidably connected with pressure rod guide grooves, the pressure rod slides in the pressure rod guide grooves, 1 spring II is sleeved outside each spring shaft, the upper part of each spring II abuts against the pressure rod, the lower part of each spring II abuts against the lower end face of each pressure rod guide groove, each clamping sleeve shaft is rotatably connected with a pressing sleeve hole, each pressing sleeve hole rotates around each clamping sleeve shaft, the pressure rod is slidably connected with the circumferential face of the plane cam, the cam rod is slidably connected with the end face of the end face cam, and the two sides of the end face cam are respectively provided with an end face lift face and an end face return face.

The first lead screw is in threaded connection with the first nut, the 2 first guide rod holes are respectively in sliding connection with the 2 first guide rods, and the first guide rod holes slide on the first guide rods.

Has the advantages that:

1. according to the invention, the two feet of a trainer respectively step on the pedals, 2 pedals are connected to the rubber band fixing holes through the rubber bands, the rubber bands have good elasticity, the elastic deformation is large, the elasticity is moderate, and the pedals are stepped on to slide towards two sides when the trainer presses the legs, so that on one hand, the feet of the trainer can slide towards two sides without obstacles when pressing the legs, the legs of the trainer can be prevented from being injured by the too fast sliding of the two feet of the trainer, and meanwhile, the two legs of the trainer can be easily folded under the action of the elasticity. The first motor rotates to drive the spline shaft to rotate, the spline shaft rotates to drive the friction wheel to rotate, the friction wheel rotates and can slide on the spline shaft, and when the friction wheel is in contact with the friction disc, the friction wheel rotates to drive the friction disc to rotate under the action of friction force.

2. The cam of the invention is provided with a plane cam and an end face cam, wherein the plane cam is arranged in the circumferential direction, the end face cam is arranged on the side face, the plane cam is provided with a plane return plane and a plane lift plane, the end face cam is provided with an end face lift plane and an end face return plane, and a cam hole is arranged in the middle of the cam. Drive No. two lead screws and rotate when No. three motors rotate, No. two lead screws rotate and drive the ejector pad and remove along controlling No. two guide arms, when the ejector pad removes toward the left side, the ejector pad can promote the carriage release lever and remove toward the left side, the carriage release lever moves the promotion friction pulley toward the left side and removes toward the left side, the friction pulley moves toward the left side, the friction pulley can break away from the contact with the friction disk, when the ejector pad moves toward the right side, the ejector pad breaks away from and the carriage release lever contact, a spring can promote the friction pulley and move toward the right side, the friction pulley moves the contact that can resume and friction disk toward the right side.

3. When the plane cam is in the lift stage, the plane lift surface is contacted with the pressure rod, the plane lift surface presses the pressure rod to move downwards, the end face cam is also in the lift stage, the end face lift surface is contacted with the cam rod, the end face lift surface pushes the cam rod to move towards the left side, the cam rod drives the friction wheel to move towards the left side, the friction wheel is separated from the friction disc, namely, when the pressure rod moves downwards, the friction wheel is separated from the friction disc, and the friction disc cannot rotate.

4. When the plane cam is in a return stage, the plane return surface is contacted with the pressure rod, the pressure rod moves upwards under the push of the second spring, the end face cam is also in the return stage, the end face return surface is contacted with the cam rod, the first spring pushes the friction wheel to move towards the right side, the friction wheel drives the moving rod to move towards the right side, the friction wheel starts to be contacted with the friction disc, namely when the pressure rod moves upwards, the friction wheel drives the friction disc to rotate, the friction disc rotates to drive the pressure rod to move downwards, when the pressure rod moves downwards, the pressure sleeve is driven to move downwards, the leg of a trainer can be pressed to move downwards by the downward movement of the pressure sleeve, and therefore the leg pressing training purpose is achieved, the pressing height at each time is limited and controllable, and the purpose of gradual exercise is achieved.

5. According to the invention, the first screw shaft rotates in the lower screw hole and the upper screw hole, so that the friction disc can be kept parallel to a horizontal plane, the first screw can be kept vertical, the pressing frame can move in the vertical direction under the condition of keeping horizontal, and further the pressing rods at two sides are driven to vertically move under the condition of keeping the same height, so that the downward pressure on the two legs of a trainer is the same, the limiting height is the same, and the training strength of the two legs is kept the same. The pressure bar slides in the pressure bar guide groove, and the pressure bar guide groove limits the sliding track of the pressure bar through the matching of the two sides of the pressure bar, so that the pressure bar slides stably and is not easy to deviate. No. two springs support under the depression bar guide slot between terminal surface and the depression bar, support the depression bar outer end, utilize the spring characteristic, it is different to the depression bar holding power of No. two springs in both sides, and No. two spring cooperations in both sides can make the depression bar both ends trend the level height the same, make the depression bar can keep the level, reduce the depression bar and slide the in-process in the depression bar guide slot and produce the card and pause.

6. The rubber bands on the two sides exert opposite pulling forces on the two legs of the trainer, so that the folding of the two legs of the trainer is facilitated, the trainer is assisted to fold the two legs when the training reaches the limit, the possibility of leg pulling injury caused by over-training is reduced, and the safety in the training process is improved. The back of a trainer leans on the rubber bands on the two sides of the backrest to apply tension to achieve balance, the two sides of the compression sleeve press the leg downwards, the force and the position are the same, the trunk of the trainer can be kept in the middle of the backrest, and the strength of the two-leg training is the same.

7. When the invention is used, a trainer stands on the upper part of a pedal with two feet, the back leans against the backrest, a first motor is started to drive a friction wheel to rotate, the friction wheel is contacted with a friction disc to drive a friction disc to rotate, the friction disc rotates to drive a compression frame to move downwards, the compression frame moves downwards to drive a compression rod to move downwards, the compression rod moves downwards to drive a compression sleeve to move downwards, the compression sleeve moves downwards to press the leg of the trainer downwards, a second motor rotates to drive a cam to rotate, the cam rotates, when a plane lift surface is contacted with the compression rod, the plane lift surface pushes the compression rod to move downwards, the compression rod drives the compression sleeve to press the leg of a patient downwards, the friction disc does not rotate at the moment, when a plane return surface is contacted with the compression rod, the friction disc rotates to drive the compression rod to move downwards, the compression rod drives the compression sleeve to move downwards to press the leg of the patient downwards, and when the plane surface is contacted with the compression rod, the pressing rod can be pressed down for a short time, the pressure on the leg of a patient can be released along with the rotation of the cam, the cam continues to rotate, the friction disc drives the pressing frame to move downwards, the cam has double functions, the plane lifting surface drives the pressing rod to move downwards, the pressing frame can be enabled to experience the pressure in advance and then is released, the friction disc drives the pressing rod to move downwards subsequently, the pressing frame does not move downwards really, at the moment, if the patient feels that the pressure is too large or the leg is painful, the rotation of the friction disc can be stopped, the pressing frame can not move downwards, if the leg feels can bear, the pressing frame can continue to press downwards, the leg can be continuously pressed downwards, the plane lifting surface plays a role in enabling the trainer to experience the pressure in advance, the training of pressing the leg downwards once is added, if the trainer feels that the pressure is too large or can not bear in the training process, the third motor can be started, the third motor rotates to drive the push block to move towards the left side, the push block moves towards the left side, the moving rod is pushed to move towards the left side, the moving rod drives the friction wheel to move towards the left side, the friction wheel is separated from the friction disc, the friction disc cannot drive the compression frame to move downwards, the cam rotates, the end face cam does not work, the compression frame can be unchanged at 1 height, the cam rotates to drive the compression rod to repeatedly press the leg of a trainer, the leg of the trainer can be repeatedly pressed at 1 height to play a role of repeated exercise, the trainer can play a sequential and gradual exercise effect until the trainer feels appropriate, the third motor can be started at the moment to reset the push block, the exercise is continued, the exercise is finished, the end button is started, the invention resets, the leg pressing exercise can be sequentially and gradually stopped at any time, the exercise can be repeatedly performed at 1 height, the pressing height at each time is limited and controllable, and the exercise efficiency is high, the training effect is good, and the muscle of the leg can not be pulled.

Drawings

Fig. 1 is a schematic overall structure diagram of a dance practice leg pressing device.

Fig. 2 is a schematic structural view of the rear part of the dance exercise leg pressing device.

Fig. 3 is a schematic view of the structure of the frame part according to the present invention.

Fig. 4 is a schematic view of the structure of the compressing portion according to the present invention.

Fig. 5 is a schematic view of the rear structure of the pressing part according to the present invention.

Fig. 6 is a schematic side view of the pressing portion according to the present invention.

Fig. 7 is a schematic view of a rack structure according to the present invention.

Fig. 8 is a schematic view of the pedal structure of the present invention.

FIG. 9 is a schematic view of the spline shaft structure of the present invention.

Fig. 10 is a schematic structural view of the friction wheel according to the present invention.

FIG. 11 is a schematic illustration of a friction disk according to the present invention.

Fig. 12 is a schematic structural view of the pressing frame according to the present invention.

Fig. 13 is a schematic structural diagram of the upper part of the pressing frame of the invention.

FIG. 14 is a schematic view of the compression bar according to the present invention.

Fig. 15 is a schematic structural view of the push block according to the present invention.

Fig. 16 is a schematic view of the structure of the moving rod according to the present invention.

Fig. 17 is a schematic structural view of a compression sleeve according to the present invention.

Fig. 18 is a schematic view of the cam structure according to the present invention.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

a leg pressing device for dance exercises comprises a machine frame part 100 and a pressing part 200, wherein the machine frame part 100 comprises a machine frame 110, pedals 120, a spline shaft 130, a friction wheel 140, a friction disc 150, a first spring 160, a rubber band 161, a first motor 280 and a first motor base 281, the pressing part 200 comprises a pressing frame 210, a pressing rod 220, a push block 230, a moving rod 240, a pressing sleeve 250, a cam 260, a cam shaft 270, a second motor 282, a second motor base 283, a third motor 284, a third motor base 285 and a second spring 286, a sliding groove 111 is arranged at the front part of the machine frame 110, 2 rubber band fixing holes 112 symmetrically arranged in the middle of the sliding groove 111, 1 upright post 117 is arranged at each side of the machine frame 110, a spline unthreaded shaft hole 118 is arranged at the upper part of each upright post 117, a backrest 113 is arranged in the middle of the machine frame 110, a lead screw lower hole 114 is arranged at the upper part of the backrest 113, 1 first guide rod 115 is arranged at each side of the lead screw lower hole 114, a lead screw upper hole 116 is arranged at the upper part of the first guide rod 115, the pedal 120 has a pedal slider 121 at the lower part, the pedal 120 has a pedal hole 122 at the side, the spline shaft 130 has spline optical axis 131 at both sides, the friction wheel 140 has a spline hole 141 in the middle, the friction disc 150 has a first lead screw 151 at the lower part, a first lead screw 152 is respectively at both sides of the first lead screw 151, 1 pedal 120 is respectively arranged at both sides of a rubber band fixing hole 112, the pedal slider 121 is slidably connected with the slide groove 111, the pedal slider 121 slides in the slide groove 111, the rubber band 161 is fixedly connected with the pedal hole 122 and the rubber band fixing hole 112 at both sides, the first lead screw 152 at the lower part is rotatably connected with the lead screw lower hole 114, the first lead screw 152 at the upper part is rotatably connected with the lead screw upper hole 116, the lead screw lower hole 114 and the lead screw upper hole 116 are coaxial, the first lead screw 152 rotates in the lead screw lower hole 114 and the lead screw upper hole 116, the spline optical axis 131 is rotatably connected with the spline optical axis hole 118, and the spline optical axis 131 rotates in the spline optical axis hole 118, spline hole 141 is connected with spline shaft 130 in a sliding manner, spline hole 141 slides on spline shaft 130, first spring 160 is sleeved on the left side of spline shaft 130, the right side of first spring 160 is abutted against the left side of friction wheel 140, the left side of first spring 160 is abutted against the side of left upright post 117, right spline optical axis 131 is fixedly connected with first motor 280 through a coupler, the lower part of first motor 280 is fixedly connected with first motor seat 281, first motor seat 281 is fixedly connected with upright post 117, and friction wheel 140 is connected with friction disc 150.

The middle of the pressing frame 210 is provided with a first nut 211, two sides of the first nut 211 are respectively provided with 1 first guide rod hole 212, the rear side of the first nut 211 is provided with a moving rod guide groove 218, the lower part of the pressing frame 210 is provided with 2 bilaterally symmetrical vertical rods 215, the lower part of each vertical rod 215 is provided with a cam shaft hole 216, the lower part of the cam shaft hole 216 is provided with a press rod guide groove 217, the front side of the vertical rod 215 is provided with a second guide rod 214, the front part of the second guide rod 214 is provided with a bilaterally symmetrical second screw rod hole 213, two sides of the press rod 220 are provided with bilaterally symmetrical 2 spring shafts 221, the front part of the press rod 220 is provided with 2 bilaterally symmetrical press rod arms 222, the front part of each press rod arm 222 is provided with a clamping sleeve shaft 223, the middle of the push block 230 is provided with a second guide rod hole 232, one side of the second guide rod hole 232 is provided with a second nut 231, the lower part of the moving rod 240 is provided with a cam rod 243, the upper part of the moving rod 240 is provided with a positioning block 241, the upper part is provided with a moving groove 242, the upper portion of the pressing sleeve 250 is provided with a pressing sleeve hole 251, two sides of a second lead screw 271 are rotatably connected with a second lead screw hole 213, the second lead screw 271 rotates in the second lead screw hole 213, the second lead screw 271 is in threaded connection with a second nut 231, a second guide rod hole 232 is in sliding connection with a second guide rod 214, the right side of the second lead screw 271 is fixedly connected with a third motor 284 through a coupler, the upper portion of the third motor 284 is fixedly connected with a third motor base 285, and the third motor base 285 is fixedly connected with the right side face of the pressing frame 210.

The moving rod 240 is slidably connected with the moving rod guide groove 218, the moving rod 240 slides in the moving rod guide groove 218, the positioning block 241 is placed on the upper side of the moving rod guide groove 218, the moving groove 242 is clamped on two sides of the friction wheel 140, the cam shaft 270 is rotatably connected with the cam shaft hole 216, the cam shaft 270 rotates in the cam shaft hole 216, the middle of the cam shaft 270 is fixedly connected with the cam hole 267, the right side of the cam shaft 270 is fixedly connected with the second motor 282 through a coupler, the second motor 282 is fixedly connected with the second motor base 283, and the second motor base 283 is fixedly connected with the side face of the vertical rod 215.

The two sides of the pressure lever 220 are slidably connected with pressure lever guide grooves 217, the pressure lever 220 slides in the pressure lever guide grooves 217, 1 second spring 286 is sleeved outside each spring shaft 221, the upper part of each second spring 286 abuts against the pressure lever 220, the lower part of each second spring 286 abuts against the lower end face of the pressure lever guide groove 217, a clamping sleeve shaft 223 is rotatably connected with a pressing sleeve hole 251, the pressing sleeve hole 251 rotates around the clamping sleeve shaft 223, the pressure lever 220 is slidably connected with the circumferential surface of a plane cam 261, a cam lever 243 is slidably connected with the end face cam 264, and the two sides of the end face cam 264 are respectively provided with an end face lift surface 265 and an end face return surface 266.

The first lead screw 151 is in threaded connection with a first nut 211,2 first guide rod holes 212 are respectively in sliding connection with 2 first guide rods 115, and the first guide rod holes 212 slide on the first guide rods 115.

According to the invention, the two feet of a trainer respectively step on the pedals 120, 2 pedals 120 are connected to the rubber band fixing holes 112 through the rubber bands 161, the rubber bands 161 have good elasticity, the elastic deformation is large, the elasticity is moderate, when the trainer presses the legs, the pedals 120 are stepped on to slide towards two sides, on one hand, the feet of the trainer can slide towards two sides without obstacles when pressing the legs, on the other hand, the legs of the trainer can be prevented from being injured by the feet of the trainer sliding too fast, and simultaneously, under the action of the elasticity, the legs of the trainer can be easily folded. The first motor 280 rotates to drive the spline shaft 130 to rotate, the spline shaft 130 rotates to drive the friction wheel 140 to rotate, the friction wheel 140 rotates and can slide on the spline shaft 130, and when the friction wheel 140 contacts the friction disc 150, the friction wheel 140 rotates to drive the friction disc 150 to rotate under the action of friction force.

The cam 260 of the present invention has a flat cam 261 and a face cam 264, the flat cam 261 is circumferentially disposed, the face cam 264 is laterally disposed, the flat cam 261 has a return flat surface 262 and a lift flat surface 263, the face cam 264 has a lift face 265 and a return flat surface 266, and the cam 260 has a cam hole 267 in the middle. When the third motor 284 rotates, the second lead screw 271 is driven to rotate, the second lead screw 271 rotates to drive the push block 230 to move left and right along the second guide rod 214, when the push block 230 moves to the left side, the push block 230 can push the moving rod 240 to move to the left side, the moving rod 240 moves to the left side to push the friction wheel 140 to move to the left side, the friction wheel 140 moves to the left side, the friction wheel 140 can be separated from contact with the friction disc 150, when the push block 230 moves to the right side, the push block 230 is separated from contact with the moving rod 240, the first spring 160 can push the friction wheel 140 to move to the right side, and the friction wheel 140 moves to the right side to restore contact with the friction disc 150.

When the plane cam 261 is in the lift stage, the plane lift surface 263 is in contact with the pressure rod 220, the plane lift surface 263 presses the pressure rod 220 to move downwards, the end face cam 264 is also in the lift stage, the end face lift surface 265 is in contact with the cam rod 243, the end face lift surface 265 pushes the cam rod 243 to move towards the left side, the cam rod 243 drives the friction wheel 140 to move towards the left side, the friction wheel 140 is separated from the contact with the friction disc 150, namely when the pressure rod 220 moves downwards, the friction wheel 140 is separated from the contact with the friction disc 150, and the friction disc 150 cannot rotate.

When the plane cam 261 is in a return stage, the plane return surface 262 is in contact with the pressure lever 220, the pressure lever 220 is pushed by the second spring 286 to move upwards, the end face cam 264 is also in the return stage, the end face return surface 266 is in contact with the cam rod 243, the first spring 160 pushes the friction wheel 140 to move towards the right side, the friction wheel 140 drives the moving rod 240 to move towards the right side, the friction wheel 140 starts to be in contact with the friction disc 150, namely, when the pressure lever 220 moves upwards, the friction wheel 140 drives the friction disc 150 to rotate, the friction disc 150 rotates to drive the pressure lever 220 to move downwards, when the pressure lever 220 moves downwards, the pressing sleeve 250 is driven to move downwards, and the pressing sleeve 250 moves downwards to press the leg of a trainer to move downwards, so that the leg pressing training purpose is achieved, the pressing height of each time is limited and controllable, and the purpose of gradual exercise is achieved.

According to the invention, the first screw shaft 152 rotates in the lower screw hole 114 and the upper screw hole 116, the friction disc 150 can be kept parallel to a horizontal plane, and the first screw 151 can be kept vertical, so that the pressing frame 210 can move in the vertical direction under the condition of keeping horizontal, and further the pressing rods 220 at two sides can be driven to vertically move under the condition of keeping the same height, so that the downward pressure on the legs of a trainer is the same, the limiting height of the legs is the same, and the training strength of the legs is the same. The pressing rod 220 slides in the pressing rod guide groove 217, and the pressing rod guide groove 217 limits the sliding track of the pressing rod 220 through the matching of the two sides of the pressing rod 220, so that the pressing rod 220 slides stably and is not easy to deviate. No. two springs 286 support under depression bar guide slot 217 between terminal surface and depression bar 220, support depression bar 220 outer end, utilize the spring characteristic, it is different to push down the range at both ends depression bar 220 to No. two springs 286, No. two springs 286 in both sides vary to depression bar 220 holding power, No. two springs 286 in both sides cooperate, it is the same to make depression bar 220 both ends trend the level, make depression bar 220 can keep the level, it produces the card pause to reduce depression bar 220 and slide the in-process in depression bar guide slot 217.

The rubber bands 161 on the two sides exert opposite pulling forces on the two legs of the trainer, which is beneficial to the folding of the two legs of the trainer and assists the trainer to fold the two legs when the training reaches the limit, thereby reducing the possibility of leg pull injury caused by over-training and improving the safety in the training process. The back of the trainer leans against the backrest 113, the rubber bands 161 on the two sides exert pull force to achieve balance, the pressing sleeves 250 on the two sides press the legs downwards, the force and the position are the same, the trunk of the trainer can be kept in the middle of the backrest 113, and the training strength of the two legs is the same.

When the invention is used, a trainer stands on the upper part of a pedal 120 with two feet, the back leans against a backrest 113, a first motor 280 is started to drive a friction wheel 140 to rotate, the friction wheel 140 is contacted with a friction disc 150 to drive a friction disc 150 to rotate, the friction disc 150 rotates to drive a compression frame 210 to move downwards, the compression frame 210 moves downwards to drive a compression bar 220 to move downwards, the compression bar 220 moves downwards to drive a compression sleeve 250 to move downwards, the compression sleeve 250 moves downwards to press a leg part of the trainer downwards, a second motor 282 rotates to drive a cam 260 to rotate, the cam 260 rotates, when a plane lift surface 263 is contacted with the compression bar 220, the plane lift surface 263 pushes the compression bar 220 to move downwards, the compression bar 220 drives the compression sleeve 250 to press the leg part of a patient downwards, at the moment, the friction disc 150 cannot rotate, when a plane return surface 262 is contacted with the compression bar 220, the friction disc 150 rotates to drive the compression bar 220 to move downwards, the pressing rod 220 drives the pressing sleeve 250 to move downwards to press the leg of the patient downwards, when the plane lifting surface 263 is contacted with the pressing rod 220, the pressing rod 220 can be pressed downwards for a short time, the pressure on the leg of the patient can be released along with the rotation of the cam 260, the cam 260 continues to rotate, the pressing frame 210 is driven to move downwards by the friction disc 150, the cam 260 plays a dual role, the plane lifting surface 263 drives the pressing rod 220 to move downwards, the trainer can feel the pressure in advance, then the pressing frame 210 can not move downwards any more, then the pressing rod 220 is driven to move downwards by the friction disc 150 to actually move downwards, at the moment, if the patient feels the pressure is too large or the leg muscle pain, the rotation of the friction disc 150 can be stopped, the pressing frame 210 can not move downwards, if the leg feels the pressure can be borne, the lifting range continues to press the leg downwards, the plane lifting surface 263 plays a role of making the trainer feel the pressure in advance, meanwhile, one-time leg pressing down training is added, if a trainer feels that the pressure is too large or cannot bear during the training process, the third motor 284 can be started, the third motor 284 rotates to drive the push block 230 to move towards the left side, the push block 230 moves towards the left side to push the moving rod 240 to move towards the left side, the moving rod 240 drives the friction wheel 140 to move towards the left side, the friction wheel 140 is separated from the friction disc 150, the friction disc 150 cannot drive the pressing frame 210 to move downwards, the cam 260 rotates, the end face cam 264 does not work, the pressing frame 210 does not change at 1 height, the cam 260 rotates to drive the pressing rod 220, the legs of the trainer are pressed repeatedly at 1 height to play a role in repeated exercise, the trainer plays a role in repeated and gradual exercise, until the trainer feels appropriate, the third motor 284 can be started at the moment, the push block 230 is reset to continue the exercise, after the exercise is finished, the finishing button is started, the leg pressing training device is reset, the leg pressing training device can gradually stop at any time, the leg pressing training device can repeatedly train at 1 height, the pressing height is limited and controllable each time, the training efficiency is high, the training effect is good, and muscles of legs cannot be hurt.

A use method of a dance practice leg pressing device comprises the following steps:

firstly, a trainer stands on the upper part of a pedal 120 with feet, the back leans against a backrest 113, a motor 280 is started to drive a friction wheel 140 to rotate, the friction wheel 140 is contacted with a friction disc 150 to drive the friction disc 150 to rotate, the friction disc 150 rotates to drive a compression frame 210 to move downwards, the compression frame 210 moves downwards to drive a compression bar 220 to move downwards, the compression bar 220 moves downwards to drive a compression sleeve 250 to move downwards, the compression sleeve 250 moves downwards to press the legs of the trainer downwards;

in the second step, the rotation of the second motor 282 drives the cam 260 to rotate, the cam 260 rotates, when the plane lift surface 263 contacts with the pressure lever 220, the plane lift surface 263 pushes the pressure lever 220 to move downwards, the pressure lever 220 drives the pressing sleeve 250 to press the leg of the patient downwards, at this time, the friction disc 150 does not rotate, when the plane return surface 262 contacts with the pressure lever 220, the friction disc 150 rotates to drive the pressure lever 220 to move downwards, the pressure lever 220 drives the pressing sleeve 250 to move downwards to press the leg of the patient downwards,

thirdly, when the plane lifting surface 263 is contacted with the pressure lever 220, the pressure lever 220 is pressed downwards briefly, the pressure on the leg of the patient is released along with the rotation of the cam 260, the cam 260 continues to rotate, the friction disc 150 drives the pressing frame 210 to move downwards, the cam 260 plays a dual role, the plane lifting surface 263 drives the pressure lever 220 to move downwards, and the trainer can feel the pressure in advance and then releases the pressure;

fourthly, the friction disc 150 drives the pressure rod 220 to move downwards actually, at this time, if the patient feels that the pressure is too large or leg muscles are painful, the friction disc 150 can stop rotating, the pressing frame 210 can not move downwards any more, if the leg feels can bear, the leg can be continuously pressed downwards, and the plane lifting surface 263 serves to enable the trainer to feel the pressure in advance and simultaneously increase one training of pressing the leg downwards;

fifthly, if the trainee feels that the pressure is too high or cannot bear the pressure in the training process, the third motor 284 can be started, the third motor 284 rotates to drive the push block 230 to move towards the left side, the push block 230 moves towards the left side to push the moving rod 240 to move towards the left side, the moving rod 240 drives the friction wheel 140 to move towards the left side, the friction wheel 140 is separated from the friction disc 150, the friction disc 150 cannot drive the pressing frame 210 to move downwards, the cam 260 rotates, the end face cam 264 does not work, the pressing frame 210 can be unchanged at 1 height, and the cam 260 rotates to drive the pressing rod 220;

and sixthly, repeatedly pressing the legs of the trainer, wherein the legs of the trainer are repeatedly pressed at 1 height to play a role of repeated exercise, so that the trainer plays a progressive exercise effect until the trainer feels appropriate, the third motor 284 can be started at the moment, the push block 230 is reset to continue to exercise, the exercise is finished, and the end button is started.

Claims

1. A leg pressing device for dance practice is characterized by comprising a frame portion and a pressing portion, wherein the frame portion comprises a frame, pedals, a spline shaft, a friction wheel, a friction disc, a first spring, a rubber band, a first motor and a first motor base, the pressing portion comprises a pressing frame, a pressing rod, a pushing block, a moving rod, a pressing sleeve, a cam shaft, a second motor base, a third motor base and a second spring, a sliding groove is formed in the front portion of the frame, 2 rubber band fixing holes are symmetrically formed in the middle of the sliding groove, 1 stand column is arranged on each side of the frame, a spline smooth shaft hole is formed in the upper portion of each stand column, a backrest is arranged in the middle of the frame, a lead screw lower hole is formed in each side of the lead screw lower hole, a lead screw upper hole is formed in each side of the first guide rod, a pedal sliding block is arranged on each side of the first guide rod, pedal sliding blocks are arranged on each side of the spline smooth shaft, spline optical axes are arranged on each side of the spline smooth shaft, the middle of the friction wheel is provided with a spline hole, the lower part of the friction disk is provided with a first lead screw, the two sides of the first lead screw are respectively provided with a first lead screw shaft, the two sides of a rubber band fixing hole are respectively provided with 1 pedal, a pedal slider is slidably connected with a sliding groove, the pedal slider slides in the sliding groove, the two sides of the rubber band are respectively fixedly connected with a pedal hole and a rubber band fixing hole, the first lead screw shaft at the lower part is rotatably connected with a lead screw lower hole, the first lead screw shaft at the upper part is rotatably connected with a lead screw upper hole, the lead screw lower hole and the lead screw upper hole are coaxial, the first lead screw shaft rotates in the lead screw lower hole and the lead screw upper hole, the spline optical axis is rotatably connected with a spline optical axis hole, the spline optical axis rotates in the spline optical axis hole, the spline hole is slidably connected with a spline shaft, the first spring is sleeved on the left side of the spline shaft, the first spring supports the right side of the friction wheel, the left side of the first spring supports the left side of the stand, the right side of the spline optical axis passes through a shaft and is fixedly connected with a first motor, the lower part of the first motor is fixedly connected with a first motor base, the first motor base is fixedly connected with an upright post, and a friction wheel is connected with a friction disc; the middle of the compression frame is provided with a first nut, two sides of the first nut are respectively provided with 1 first guide rod hole, the rear side of the first nut is provided with a movable rod guide groove, the lower part of the compression frame is provided with 2 bilaterally symmetrical vertical rods, the lower part of each vertical rod is provided with a camshaft hole, the lower part of the camshaft hole is provided with a pressure rod guide groove, the front side of each vertical rod is provided with a second guide rod, the front part of the second guide rod is provided with a bilaterally symmetrical second guide rod hole, two sides of each pressure rod are provided with bilaterally symmetrical 2 pressure rod arms, the front part of each pressure rod arm is provided with a clamping sleeve shaft, the middle of the push block is provided with a second guide rod hole, one side of the second guide rod hole is provided with a second nut, the lower part of the movable rod is provided with a cam rod, the upper part of the movable rod is provided with a positioning block, the upper part of the positioning block is provided with a movable groove, the upper part of the compression sleeve is provided with a compression sleeve hole, two sides of the second guide rod are rotatably connected with a second guide rod hole, and the second guide rod rotates in the second guide rod hole, the second screw rod is in threaded connection with a second nut, a second guide rod hole is in sliding connection with a second guide rod, the right side of the second screw rod is fixedly connected with a third motor through a coupler, the upper part of the third motor is fixedly connected with a third motor base, and the third motor base is fixedly connected with the right side surface of the compression frame; the movable rod is connected with the movable rod guide groove in a sliding mode, the movable rod slides in the movable rod guide groove, the positioning block is placed on the upper side of the movable rod guide groove, the movable groove is clamped on two sides of the friction wheel, the cam shaft is connected with the cam shaft hole in a rotating mode, the cam shaft rotates in the cam shaft hole, the cam shaft is fixedly connected with the cam hole in the middle of the cam shaft, the right side of the cam shaft is fixedly connected with a second motor through a coupler, the second motor is fixedly connected with a second motor base, and the second motor base is fixedly connected with the side face of the vertical rod; the two sides of the pressure rod are slidably connected with pressure rod guide grooves, the pressure rod slides in the pressure rod guide grooves, 1 spring II is sleeved outside each spring shaft, the upper part of each spring II abuts against the pressure rod, the lower part of each spring II abuts against the lower end face of the pressure rod guide groove, the clamping sleeve shaft is rotatably connected with the pressing sleeve hole, the pressing sleeve hole rotates around the clamping sleeve shaft, the pressure rod is slidably connected with the circumferential face of the plane cam, the cam rod is slidably connected with the end face of the end face cam, and the two sides of the end face cam are respectively provided with an end face lift face and an end face return face; the first lead screw is in threaded connection with the first nut, the 2 first guide rod holes are respectively in sliding connection with the 2 first guide rods, and the first guide rod holes slide on the first guide rods.

2. The method of using the dance exercise leg press apparatus according to claim 1, comprising the steps of:

firstly, a trainer stands on the upper part of a pedal with feet, the back leans against a backrest, a motor is started to drive a friction wheel to rotate, the friction wheel is driven to rotate when being contacted with a friction disc, the friction disc rotates to drive a compression frame to move downwards, the compression frame moves downwards to drive a compression rod to move downwards, the compression rod moves downwards to drive a compression sleeve to move downwards, the compression sleeve moves downwards to press the leg of the trainer downwards;

when the plane return surface is contacted with the pressure rod, the friction disc rotates to drive the pressure rod to move downwards, the pressure rod drives the compression sleeve to move downwards to press the leg of the patient downwards,

thirdly, when the plane lift surface is contacted with the pressure rod, the pressure rod can be pressed downwards temporarily, the pressure on the leg of the patient can be released along with the rotation of the cam, the cam continues to rotate, the friction disc drives the pressing frame to move downwards, the cam has double functions, and the plane lift surface drives the pressure rod to move downwards, so that the trainer can feel the pressure in advance and then releases the pressure;

fourthly, the friction disc drives the pressure rod to move downwards to actually move downwards, at the moment, if a patient feels that pressure is too large or leg muscles are painful, the rotation of the friction disc can be stopped, the pressing frame cannot move downwards any more, if leg feelings can be borne, the leg can be continuously pressed downwards, and the effect of the plane lifting surface is to enable a trainer to feel pressure in advance and increase one training of pressing the leg downwards;

fifthly, if a trainer feels that the pressure is too large or cannot bear the pressure in the training process, a motor III can be started, the motor III rotates to drive a push block to move towards the left side, the push block moves towards the left side to push a moving rod to move towards the left side, the moving rod drives a friction wheel to move towards the left side, the friction wheel is separated from a friction disc, the friction disc cannot drive a compression frame to move downwards, a cam rotates, an end face cam does not work, the compression frame can be unchanged at 1 height, and the cam rotates to drive a compression rod;

the sixth step, press training person's shank repeatedly, training person's shank can be pushed down repeatedly at 1 height, play the effect of taking exercise repeatedly, let training person play progressive exercise effect, it is suitable until training person feels, can start No. three motors this moment, let the ejector pad reset, continue to take exercise, take exercise the end, start the end button, dance exercise leg pressing device resets, dance exercise leg pressing device leg pressing training can be progressive in order, stop at any time, can train repeatedly at 1 height, it is highly limited to push down at every turn, it is efficient to train, it is effectual to train, can not pull the muscle of hindering the shank.