CN108992855B - Lower limb body-building device - Google Patents
Lower limb body-building device Download PDFInfo
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- CN108992855B CN108992855B CN201810921110.XA CN201810921110A CN108992855B CN 108992855 B CN108992855 B CN 108992855B CN 201810921110 A CN201810921110 A CN 201810921110A CN 108992855 B CN108992855 B CN 108992855B
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- 210000003141 lower extremity Anatomy 0.000 title claims description 11
- 210000003423 ankle Anatomy 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 9
- 238000013017 mechanical damping Methods 0.000 claims description 9
- 210000002414 leg Anatomy 0.000 claims description 7
- 210000002683 foot Anatomy 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000003414 extremity Anatomy 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 244000309466 calf Species 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/00058—Mechanical means for varying the resistance
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2208/00—Characteristics or parameters related to the user or player
- A63B2208/02—Characteristics or parameters related to the user or player posture
- A63B2208/0228—Sitting on the buttocks
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/80—Special sensors, transducers or devices therefor
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/09—Adjustable dimensions
- A63B2225/093—Height
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Rehabilitation Tools (AREA)
Abstract
The utility model provides a low limbs fitness equipment, including the seat frame, be provided with the cushion on the seat frame and be located the front and back adjustable back subassembly of cushion rear side, be provided with an handrail on the seat frame respectively in cushion left and right sides, seat frame front side middle part is provided with adjustable atress formula angle and relaxes and open the ware, be provided with two shank sheaths on the seat frame between adjustable atress formula angle and the cushion, two shank sheaths are located the left and right sides of adjustable atress formula angle and slow open the ware respectively, adjustable atress formula angle is slow open the front side of ware and is connected with adjustable length and is opened the ware connecting rod, adjustable length is slow to open ware connecting rod lower extreme rear side and is provided with two ankle sheaths; the invention has compact structure, light weight and small volume, and can be loosened suddenly after the rotating arm rotates to a certain angle, the rotating arm can be reset slowly, the safety and the reliability are strong, the force adjustable range is large, the operability is good, the backrest can be adjusted back and forth, and the ankle sheath can be adjusted up and down to adapt to the needs of different exercisers.
Description
Technical Field
The invention belongs to the technical field of indoor body-building apparatuses, and particularly relates to a lower limb body-building apparatus.
Background
With the acceleration of the pace of life, more and more people are in sub-health state, especially for people who are working in offices for a long time, the lower limbs lack exercise due to long working time, and are accompanied by fatigue feeling which is difficult to recover. The body building device is needed for building body, in fact, outdoor exercises are difficult to be continuously performed for a long time for most office people facing the nine and the five night, and people use the body building device for building body in a body building room. Traditional large-scale type strength formula fitness equipment, for example can install some hydro-cylinders, cylinder or balancing weight on the low limbs fitness equipment, come regulation and control resistance size, nevertheless have following defect: the device has the advantages of large volume, heavy weight, limited adjustable range and poor safety (when the device is suddenly released from the middle, the device can be reset suddenly to easily hurt an exerciser), and a user cannot properly adjust damping according to personal conditions due to different physical abilities of the user.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides the lower limb body building device which adopts mechanical structure damping, has large force adjustable range and strong safety and reliability.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a low limbs fitness equipment, including the seat frame, be provided with the cushion on the seat frame and be located the front and back adjustable back subassembly of cushion rear side, be provided with an handrail on the seat frame respectively in cushion left and right sides, seat frame front side middle part is provided with adjustable atress formula angle and relaxes and open the ware, be provided with two shank sheaths on the seat frame between adjustable atress formula angle and the cushion, two shank sheaths are located the left and right sides of adjustable atress formula angle and slow open the ware respectively, adjustable atress formula angle is slow open the front side of ware and is connected with the adjustable slow open ware connecting rod of length that sets up vertically, adjustable slow open ware connecting rod lower extreme rear side is provided with two bilateral symmetry's ankle sheaths;
the adjustable stress type angle tension buffer comprises a shell and a rotating arm, wherein the upper end of the rotating arm is rotationally connected to the upper end of the shell through a hinge assembly, a mechanical damping assembly, a linear driver and a control chamber are sequentially arranged in the shell from top to bottom, the driving end of the linear driver is in crimping fit with the hinge assembly through the mechanical damping assembly, a control circuit module, a battery and a control key module are sequentially arranged in the control chamber from top to bottom, a control panel corresponding to the control key module is arranged at the lower end of the shell, a strain gauge sensor is arranged on the rotating arm adjacent to the hinge assembly, the control key module, the strain gauge sensor and the linear driver are respectively connected with the control circuit module through data wires, and the battery is connected with the control circuit module through wires.
The hinge assembly comprises a rotating shaft, a positioning shaft sleeve, a sliding bearing, a connecting plate and a positioning ring plate, wherein the rotating shaft is provided with one positioning shaft sleeve, the sliding bearing, the connecting plate and the positioning ring plate are respectively arranged in two, the rotating arm comprises a left side plate, a right side plate and a front side plate, the left side and the right side of the front side plate are respectively and fixedly connected with the front side edges of the left side plate and the right side plate, and the left side plate and the right side plate are respectively positioned on the right side of the left side wall and the left side of the right side wall of the shell;
the two positioning shaft sleeves are respectively and fixedly arranged on the right side face of the left side plate and the left side face of the right side plate, the two sliding bearings are respectively arranged on the left side wall and the rear side wall of the shell, the two sliding bearings and the two positioning shaft sleeves are provided with the same central line, the rotating shaft penetrates through the two sliding bearings and the two positioning shaft sleeves, the two positioning ring plates are sleeved at the left end and the right end of the rotating shaft and are connected with the rotating shaft through flat keys, a plurality of left connecting holes are formed in the left positioning ring plates, the left side plate and the left positioning shaft sleeve in the circumferential direction, a plurality of right connecting holes are formed in the positioning ring plates, the right side plate and the positioning shaft sleeve in the right side in the circumferential direction, positioning pins are inserted in the left connecting holes and the right connecting holes, the left end of the plurality of positioning pins in the left side is fixedly connected with the right side face of a connecting plate, and the right end of the positioning pins in the right side is fixedly connected with the left side face of the connecting plate, and a locking cover for covering the connecting plate and the positioning ring plates is arranged on the outer side of each connecting plate.
The connecting plate and the positioning ring plate are disc-shaped structures, the center of the connecting plate is provided with a through hole, the two end parts of the rotating shaft are provided with threaded holes, the inner end surface of the locking cover is fixedly provided with a stud, the stud penetrates through the through hole on the connecting plate to be in threaded connection with the threaded holes at the two end parts of the rotating shaft, and the locking cover compresses the connecting plate and the positioning ring plate.
The mechanical damping assembly comprises an eccentric wheel, a wedge block and a supporting slide plate, wherein the supporting slide plate is fixedly arranged on the rear side wall in the shell, an eccentric hole is formed in the eccentric wheel, a plane groove is milled in the middle of the rotating shaft, a screw hole is formed in the eccentric wheel along the radial direction, the inner end of the screw hole is communicated with the eccentric hole, the rotating shaft penetrates through the eccentric hole, a compression bolt is connected in the screw hole in a threaded manner, the inner end of the compression bolt is in jacking fit with the bottom of the plane groove, the center line of the eccentric hole is parallel to the center line of the eccentric wheel, the center line of the compression bolt is vertically crossed with the center line of the eccentric hole and the center line of the eccentric wheel, the plane of the wedge block is arranged on the supporting slide plate in a sliding manner along the up-down direction, the inclined plane of the wedge block is in jacking contact with the outer circumferential surface of the eccentric wheel, and the lower end of the wedge block is connected with the driving end of the linear driver; and in the state that the rotating arm is not stressed, the central line of the compression bolt is perpendicular to the inclined plane of the wedge-shaped block.
The strain gauge sensor is stuck on the inner wall of the front side plate, and notches for improving stress induction are formed on the left side and the right side of the strain gauge sensor on the left side and the right side of the rotating arm.
The back subassembly with adjustable around includes along vertical fixed mount that sets up on the seat frame, the fixed first side pipe that is provided with of mount middle part along fore-and-aft direction, first side pipe has seted up a first jack that passes through from top to bottom along the vertical direction, first side pipe interpolation is equipped with the second side pipe, the fixed back that is located the mount front side that is provided with of second side pipe front end, a plurality of second jack has been seted up along the vertical direction to the second side pipe, the length direction evenly arranged of second side pipe is followed to the second jack, the second side pipe is managed at first side intraductal back-and-forth movement can make every second jack all correspond from top to bottom with first jack, peg graft through first bolt between first jack and one of them second jack.
The length-adjustable retarder connecting rod comprises a third square pipe and a fourth square pipe which are vertically arranged, the rear side surface of the third square pipe is fixedly connected with the front side plate, the lower end of the third square pipe is lower than the lower end of the front side plate, the fourth square pipe is inserted into the third square pipe from bottom to top, the lower part of the third square pipe is provided with a third jack along the front-back direction, the fourth square pipe is provided with a plurality of fourth jacks along the front-back direction, the fourth jacks are uniformly arranged along the length direction of the fourth square pipe, each fourth jack can vertically correspond to one third jack through the up-down movement of the fourth square pipe in the third square pipe, and the third jack is inserted into one fourth jack through a second bolt; the ankle sheath is fixedly arranged at the rear side of the lower end part of the fourth pipe.
By adopting the technical scheme, the working principle of the invention is as follows: an exerciser sits on the seat cushion on the seat frame, and the leg bends between the thighs and the calves are placed on the leg sheaths, and the instep hooks the ankle sheaths upwards. The shank is upwards forced forward to drive the ankle sheath, the ankle sheath drives the third square pipe through the fourth square pipe, the third square pipe drives the rotating arm to rotate forward by taking the rotating shaft as a fulcrum, namely, power for driving the rotating arm to rotate forward is applied to the rotating arm, the power enables a strain gauge sensor stuck to the rotating arm to deform, a control circuit module receives a signal of deformation of the strain gauge sensor, and when the output signal intensity of the strain gauge sensor is greater than a set threshold (namely, the deformation of the strain gauge sensor is greater than the threshold), the control circuit module controls a linear driver to move, and the linear driver adopts an electric push rod as a general scheme. The wedge block connected with the club head of the electric push rod moves downwards, and the electric push rod contracts. Because the rotating shaft connected with the rotating arm and the eccentric wheel always squeeze the wedge block under the action of the force of the rotating arm, when the wedge block moves, the eccentric wheel also rotates, so that the forward opening angle of the rotating arm is changed; when the output signal intensity of the strain gauge sensor is not greater than a set threshold (namely the deformation of the strain gauge sensor is not greater than the threshold), the control circuit module controls the linear driver to move, and the wedge block connected with the rod head of the electric push rod moves upwards along the extending direction of the push rod. Until the wedge blocks squeeze the eccentric wheel, the electric push rod stops. At this time, the opening angle of the rotating arm is locked by the wedge block and cannot be opened. The mechanism which uses the wedge block to be matched with the eccentric wheel mainly applies the force on the driving rotating arm to the sliding plate and the shell, and only small force in the vertical direction can push the wedge block to move, so that the wedge block can be prevented from moving only by small power, and the rotating arm position can be locked in one direction. The movement speed of the linear driver can be flexibly adjusted by the control circuit module, so that the opening angular speed of the rotating arm is changed; the linear drive is powered by a battery and the design volume can be small.
The electric push rod may be replaced by other driving schemes such as a rack and pinion driving mechanism, or a linear drive such as a pneumatic cylinder, a hydraulic cylinder, etc.
The rotary shaft, the eccentric wheel, the positioning ring plate, the connecting plate and the positioning pin are arranged into a split structure, so that the rotary shaft is convenient to manufacture, mount and dismount, the positioning pin plays a role in transmitting torque of the positioning ring plate and the positioning shaft sleeve rotating piece, and the positioning shaft sleeve plays a role in enhancing the strength of the left side plate and the right side plate of the rotary arm. The connecting plate plays a role in simultaneously disassembling and inserting the locating pin, and the disassembly and assembly efficiency is improved. The locking cover plays a role in limiting the connecting plate and the locating pin, and ensures the reliability of torque transmission.
The notch for improving the stress induction is formed in the left side and the right side of the strain gauge sensor, namely, the stress induction of the section where the notch is formed is the most sensitive, so that the strain gauge sensor is arranged at the notch and the effect of the stress induction can be fully improved.
The support slide plate serves to support the wedge block and provide a plane for the wedge block to move up and down.
The requirements of each exerciser for the distance of the backrest are different, and the following is a process of adjusting the front and rear positions of the backrest: the back assembly with the adjustable front and back can move the second square tube and the back forwards or backwards after the first bolt is pulled out, namely the second square tube moves to the position where the first jack corresponds to one second jack up and down in the first square tube after the back moves to a proper position, and then the first bolt is inserted into the corresponding first jack and second jack, so that the front and back adjustment of the back is realized.
The height of cushion is certain, and every person of taking exercise is because the length of oneself low limbs is different, need highly carry out suitable regulation to the ankle sheath when taking exercise on the cushion, adjusts the length of the adjustable retarder connecting rod of length promptly, and specific adjustment process is: the second bolt is firstly pulled out, the fourth pipe moves upwards or downwards in the third pipe until the fourth pipe moves to the position, corresponding to the third jack and one fourth jack, in the third pipe, the height of the ankle sheath is adjusted to a proper height, and then the second bolt is inserted into the corresponding third jack and fourth jack, so that the height adjustment of the ankle sheath is realized.
In conclusion, the invention has reasonable design, compact structure, light weight and small volume, the rotating arm can be reset slowly after rotating to a certain angle, the safety and reliability are strong, the force adjustable range is large, the backrest can be adjusted back and forth, and the ankle sheath can be adjusted up and down to adapt to the needs of different exercisers.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the present invention;
FIG. 3 is a schematic diagram of the external shape structure of the adjustable stress angle buffer in the invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is an exploded view of the adjustable force angle retarder of the present invention;
FIG. 6 is a schematic view of the rotation arm of the adjustable stress angle retarder of the present invention rotated 90 degrees;
FIG. 7 is a schematic view of a control panel;
fig. 8 is a schematic of an exerciser when exercising using the present invention.
Detailed Description
As shown in fig. 1-6, the lower limb exercise machine of the invention comprises a seat frame 39, wherein a cushion 40 and a front-back adjustable backrest component positioned at the rear side of the cushion 40 are arranged on the seat frame 39, armrests 41 are respectively arranged at the left side and the right side of the cushion 40 on the seat frame 39, an adjustable stress angle buffer 42 is arranged in the middle of the front side of the seat frame 39, two leg sheaths 43 are arranged between the adjustable stress angle buffer 42 and the cushion 40 on the seat frame 39, the two leg sheaths 43 are respectively positioned at the left side and the right side of the adjustable stress angle buffer 42, the front side part of the adjustable stress angle buffer 42 is connected with a vertically arranged length adjustable buffer connecting rod, and two symmetrical ankle sheaths 44 are arranged at the rear side of the lower end of the length adjustable buffer connecting rod;
the adjustable stress type angle tension buffer 42 comprises a shell 1 and a rotating arm 2, wherein the upper end of the rotating arm 2 is rotationally connected to the upper end of the shell 1 through a hinge assembly, a mechanical damping assembly, a linear driver 3 and a control chamber 4 are sequentially arranged in the shell 1 from top to bottom, the driving end of the linear driver 3 is in press fit with the hinge assembly through the mechanical damping assembly, a control circuit module 5, a battery 6 and a control key module 7 are sequentially arranged in the control chamber 4 from top to bottom, a control panel 8 corresponding to the control key module 7 is arranged at the lower end of the shell 1, a strain gauge sensor 9 is arranged on the rotating arm 2 adjacent to the hinge assembly, the control key module 7, the strain gauge sensor 9 and the linear driver 3 are respectively connected with the control circuit module 5 through data wires, and the battery 6 is connected with the control circuit module 5 through wires.
As shown in fig. 7, the control panel 8 is provided with a force value display 11, a force increasing key 12, a force decreasing key 13, a speed value display 14 (of the swivel arm 2), a speed increasing key 15, and a speed decreasing key 16.
The hinge assembly comprises a rotating shaft 17, a positioning shaft sleeve 18, a sliding bearing 19, a connecting plate 20 and a positioning ring plate 21, wherein one rotating shaft 17 is arranged, the two positioning shaft sleeves 18, the two sliding bearings 19, the two connecting plates 20 and the two positioning ring plates 21 are respectively arranged, the rotating arm 2 comprises a left side plate 22, a right side plate 23 and a front side plate 24, the left side and the right side of the front side plate 24 are respectively fixedly connected with the front side edges of the left side plate 22 and the right side plate 23, and the left side plate 22 and the right side plate 23 are respectively positioned on the right side of the left side wall and the left side of the right side wall of the shell 1;
the two positioning shaft sleeves 18 are respectively and fixedly arranged on the right side surface of the left side plate 22 and the left side surface of the right side plate 23, the two sliding bearings 19 are respectively arranged on the left side wall and the rear side wall of the shell 1, the two sliding bearings 19 and the two positioning shaft sleeves 18 are provided with the same center line, the rotating shaft 17 is arranged in the two sliding bearings 19 and the two positioning shaft sleeves 18 in a penetrating manner, the two positioning ring plates 21 are sleeved at the left end and the right end of the rotating shaft 17 and are connected with the rotating shaft 17 through the flat key 25, the left positioning ring plates 21, the left side plates 22 and the left positioning shaft sleeves 18 are provided with a plurality of left connecting holes 26 along the circumferential direction, the right positioning ring plates 21, the right side plates 23 and the right positioning shaft sleeves 18 are provided with a plurality of right connecting holes 27 along the circumferential direction, the left connecting holes 26 and the right connecting holes 27 are respectively inserted with positioning pins 28, the left ends of the left positioning pins 28 are fixedly connected with the right side surface of one connecting plate 20, the right ends of the right positioning pins 28 are fixedly connected with the left side surface of the one connecting plate 20, and each connecting plate 20 is provided with a locking ring cover 29 for locking the positioning ring plates 21 and the outer side of the connecting plate 20.
The connecting plate 20 and the positioning ring plate 21 are of disc-shaped structures, a through hole is formed in the center of the connecting plate 20, threaded holes are formed in the two end portions of the rotating shaft 17, a stud 30 is fixedly arranged on the inner end face of the locking cover 29, the stud 30 penetrates through the through hole in the connecting plate 20 to be in threaded connection with the threaded holes in the two end portions of the rotating shaft 17, and the locking cover 29 compresses the connecting plate 20 and the positioning ring plate 21.
The mechanical damping assembly comprises an eccentric wheel 31, a wedge block 32 and a supporting sliding plate 33, wherein the supporting sliding plate 33 is fixedly arranged on the rear side wall in the shell 1, an eccentric hole 34 is formed in the eccentric wheel 31, a plane groove 37 is milled in the middle of a rotating shaft 17, a screw hole 35 is formed in the eccentric wheel 31 in the radial direction, the inner end of the screw hole 35 is communicated with the eccentric hole 34, the rotating shaft 17 passes through the eccentric hole 34, a compression bolt 36 is connected with the inner thread of the screw hole 35, the inner end of the compression bolt 36 is in pressing fit with the bottom of the plane groove 37, the center line of the eccentric hole 34 is parallel to the center line of the eccentric wheel 31, the center line of the compression bolt 36 is vertically crossed with the center line of the eccentric hole 34 and the center line of the eccentric wheel 31, the plane of the wedge block 32 is arranged on the supporting sliding plate 33 in the up-down direction, the inclined surface of the wedge block 32 is in pressing contact with the outer circumferential surface of the eccentric wheel 31, and the lower end of the wedge block 32 is connected with the driving end of the linear driver 3; in the unstressed state of the swivel arm 2, the center line of the hold-down bolt 36 is perpendicular to the inclined surface of the wedge block 32.
The strain gauge sensor 9 is adhered to the inner wall of the front side plate 24, and the left side plate 22 and the right side plate 23 of the rotating arm 2 are provided with notches 38 for improving stress induction on the left side and the right side of the strain gauge sensor 9.
The back subassembly with adjustable back includes along vertical fixed mount 45 that sets up on seat frame 39, the fixed first side pipe 46 that is provided with in mount 45 middle part along fore-and-aft direction, first side pipe 46 has offered a first jack that passes through from top to bottom along the vertical direction, first side pipe 46 interpolation is equipped with second side pipe 47, second side pipe 47 front end is fixed to be provided with the back 48 that is located mount 45 front side, a plurality of second jack has been offered along the vertical direction to second side pipe 47, the length direction of second side pipe 47 evenly arranges along the second jack, second side pipe 47 is in first side pipe 46 back-and-forth movement can make every second jack all correspond from top to bottom with first jack, peg graft through first bolt 49 between first jack and one of them second jack.
The length-adjustable retarder connecting rod comprises a third square pipe 50 and a fourth square pipe 51 which are vertically arranged, the rear side surface of the third square pipe 50 is fixedly connected with the front side plate 24, the lower end of the third square pipe 50 is lower than the lower end of the front side plate 24, the fourth square pipe 51 is inserted into the third square pipe 50 from bottom to top, the lower part of the third square pipe 50 is provided with a third jack along the front-back direction, the fourth square pipe 51 is provided with a plurality of fourth jacks along the front-back direction, the fourth jacks are uniformly arranged along the length direction of the fourth square pipe 51, the fourth square pipe 51 moves up and down in the third square pipe 50 so that each fourth jack can vertically correspond to the third jack, and the third jack is inserted into one fourth jack through a second bolt 52; the ankle sheath 44 is fixedly provided at the rear side of the lower end portion of the fourth pipe 51.
The working principle of the invention is as follows: an exerciser 53 sits on the seat cushion 40 on the seat frame 39, and a leg-turn between the thighs and the calves is placed on the leg shield 43, with the feet facing upward to hook the ankle shield 44. The lower leg drives the ankle sheath 44 forward and upward with force, the ankle sheath 44 drives the third-party tube 50 through the fourth-party tube 51, the third-party tube 50 drives the rotating arm 2 to rotate forward by taking the rotating shaft 17 as a pivot, namely, power for driving the rotating arm 2 to rotate forward is applied to the rotating arm 2, the power deforms the strain gauge sensor 9 adhered to the rotating arm 2, the control circuit module 5 receives a signal of deformation of the strain gauge sensor 9, when the output signal intensity of the strain gauge sensor 9 is greater than a set threshold (namely, the deformation of the strain gauge sensor 9 is greater than the threshold), the control circuit module 5 controls the linear driver 3 to move, and the linear driver 3 adopts an electric push rod as a general scheme. The wedge 32 to which the head of the electric putter is connected moves downward and the electric putter contracts. Because the rotating shaft 17 and the eccentric wheel 31 connected with the rotating arm 2 always press the wedge block 32 under the action of the force exerted by the rotating arm 2, when the wedge block 32 moves, the eccentric wheel 31 also rotates, so that the forward opening angle of the rotating arm 2 is changed; when the output signal intensity of the strain gauge sensor 9 is not greater than a set threshold (i.e. the deformation of the strain gauge sensor 9 is not greater than the threshold), the control circuit module 5 controls the linear driver 3 to move, and the wedge block 32 connected with the rod head of the electric push rod moves upwards along the extending direction of the push rod. Until the wedge 32 presses the eccentric 31, the electric putter stops. The angle at which the swivel arm 2 opens is locked against opening by the wedge 32. The mechanism of the wedge block 32 and the eccentric wheel 31 is used for mainly applying the force on the driving rotating arm 2 to the sliding plate and the shell 1, and only a small force in the vertical direction can push the wedge block 32 to move, so that the wedge block 32 can be prevented from moving only by a small power, and the rotating arm 2 can be locked in one direction. The movement speed of the linear driver 3 can be flexibly adjusted by the control circuit module 5, so that the opening angular speed of the rotating arm 2 is changed; the linear drive 3 is powered by a battery 6 and the design volume can be small. As shown in fig. 8, the exerciser 53 is shown in a schematic view of the length-adjustable retarder connecting rod and the rotating arm 2 during the forward and upward rotation.
The electric push rod may be replaced by other driving schemes such as a rack and pinion driving mechanism, or a linear driver 3 such as a pneumatic cylinder, a hydraulic cylinder, or the like.
The rotary shaft 17, the eccentric wheel 31, the positioning ring plate 21, the connecting plate 20 and the positioning pin 28 are arranged in a split structure, so that the rotary shaft is convenient to manufacture, convenient to mount and dismount, the positioning pin 28 plays a role in transmitting torque of the positioning ring plate 21 and the positioning shaft sleeve 18, and the positioning shaft sleeve 18 plays a role in enhancing the strength of the left side plate 22 and the right side plate 23 of the rotary arm 2. The connecting plate 20 plays a role in simultaneously disassembling and inserting the positioning pin 28, and improves the disassembly and assembly efficiency. The locking cap 29 serves to define the connection plate 20 and the positioning pin 28, ensuring the reliability of torque transmission.
The left side plate 22 and the right side plate 23 of the rotating arm 2 are provided with notches 38 for improving stress induction on the left side and the right side of the strain gauge sensor 9, namely, the rotating arm 2 is most sensitive to stress induction at the section where the notches 38 are located, so that the strain gauge sensor 9 is arranged at the notches 38 and the effect of stress induction can be fully improved.
The support slide 33 serves to support the wedge block 32 and provides a plane in which the wedge block 32 moves up and down.
The requirements of each exerciser 53 for the distance of the backrest 48 are different, and the following is a procedure for adjusting the front and rear positions of the backrest 48: the back assembly with adjustable front and back in the invention can move the second square tube 47 and the back 48 forwards or backwards after the first bolt 49 is pulled out, namely the second square tube 47 moves to the first jack in the first square tube 46 to vertically correspond to one second jack, and then the first bolt 49 is inserted into the corresponding first jack and second jack, so that the front and back adjustment of the back 48 is realized.
The cushion 40 has a certain height, and each exerciser 53 needs to properly adjust the height of the ankle sheath 44 when exercising on the cushion 40 due to the different lengths of the lower limbs, namely, adjust the length of the length-adjustable retarder connecting rod, and the specific adjustment process is as follows: the second bolt 52 is pulled out, the fourth square tube 51 moves upwards or downwards in the third square tube 50 until the fourth square tube 51 moves in the third square tube 50 to the position that the third jack corresponds to one of the fourth jacks up and down, the height of the ankle sheath 44 is adjusted to the proper height, and then the second bolt 52 is inserted into the corresponding third jack and fourth jack, so that the height adjustment of the ankle sheath 44 is realized.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (4)
1. A lower limb body-building device, which is characterized in that: the adjustable type foot neck cushion comprises a seat frame, wherein a seat cushion and a front-back adjustable backrest assembly positioned at the rear side of the seat cushion are arranged on the seat frame, armrests are respectively arranged at the left side and the right side of the seat cushion, an adjustable stress type angle buffer is arranged in the middle of the front side of the seat frame, two leg jackets are arranged between the adjustable stress type angle buffer and the seat cushion on the seat frame, the two leg jackets are respectively positioned at the left side and the right side of the adjustable stress type angle buffer, the front side part of the adjustable stress type angle buffer is connected with a vertically arranged length adjustable buffer connecting rod, and two bilaterally symmetrical ankle jackets are arranged at the rear side of the lower end of the length adjustable buffer connecting rod;
the adjustable stress type angle tension buffer comprises a shell and a rotating arm, wherein the upper end of the rotating arm is rotationally connected to the upper end of the shell through a hinge assembly, a mechanical damping assembly, a linear driver and a control chamber are sequentially arranged in the shell from top to bottom, the driving end of the linear driver is in press fit with the hinge assembly through the mechanical damping assembly, a control circuit module, a battery and a control key module are sequentially arranged in the control chamber from top to bottom, a control panel corresponding to the control key module is arranged at the lower end of the shell, a strain gauge sensor is arranged on the rotating arm adjacent to the hinge assembly, the control key module, the strain gauge sensor and the linear driver are respectively connected with the control circuit module through data wires, and the battery is connected with the control circuit module through wires;
the hinge assembly comprises a rotating shaft, a positioning shaft sleeve, a sliding bearing, a connecting plate and a positioning ring plate, wherein the rotating shaft is provided with one positioning shaft sleeve, the sliding bearing, the connecting plate and the positioning ring plate are respectively arranged in two, the rotating arm comprises a left side plate, a right side plate and a front side plate, the left side and the right side of the front side plate are respectively and fixedly connected with the front side edges of the left side plate and the right side plate, and the left side plate and the right side plate are respectively positioned on the right side of the left side wall and the left side of the right side wall of the shell;
the two positioning shaft sleeves are respectively and fixedly arranged on the right side surface of the left side plate and the left side surface of the right side plate, the two sliding bearings are respectively arranged on the left side wall and the rear side wall of the shell, the two sliding bearings and the two positioning shaft sleeves are provided with the same central line, the rotating shaft is arranged in the two sliding bearings and the two positioning shaft sleeves in a penetrating manner, the two positioning ring plates are sleeved at the left end and the right end of the rotating shaft and are connected with the rotating shaft through flat keys, a plurality of left connecting holes are formed in the left positioning ring plate, the left side plate and the left positioning shaft sleeve along the circumferential direction, a plurality of right connecting holes are formed in the positioning ring plate, the right side plate and the positioning shaft sleeve on the right side along the circumferential direction, positioning pins are respectively inserted into the left connecting holes and the right connecting holes, the left ends of the plurality of positioning pins on the left side are fixedly connected with the right side surface of a connecting plate, the right ends of the positioning pins on the right side are fixedly connected with the left side surface of the connecting plate, and a locking cover for covering the connecting plate and the positioning ring plate is arranged on the outer side of each connecting plate;
the connecting plate and the positioning ring plate are of disc-shaped structures, a through hole is formed in the center of the connecting plate, threaded holes are formed in the two end parts of the rotating shaft, studs are fixedly arranged on the inner end surfaces of the locking covers, the studs penetrate through the through holes in the connecting plate and are in threaded connection with the threaded holes in the two end parts of the rotating shaft, and the locking covers compress the connecting plate and the positioning ring plate;
the mechanical damping assembly comprises an eccentric wheel, a wedge block and a supporting slide plate, wherein the supporting slide plate is fixedly arranged on the rear side wall in the shell, an eccentric hole is formed in the eccentric wheel, a plane groove is milled in the middle of the rotating shaft, a screw hole is formed in the eccentric wheel along the radial direction, the inner end of the screw hole is communicated with the eccentric hole, the rotating shaft penetrates through the eccentric hole, a compression bolt is connected in the screw hole in a threaded manner, the inner end of the compression bolt is in jacking fit with the bottom of the plane groove, the center line of the eccentric hole is parallel to the center line of the eccentric wheel, the center line of the compression bolt is vertically crossed with the center line of the eccentric hole and the center line of the eccentric wheel, the plane of the wedge block is arranged on the supporting slide plate in a sliding manner along the up-down direction, the inclined plane of the wedge block is in jacking contact with the outer circumferential surface of the eccentric wheel, and the lower end of the wedge block is connected with the driving end of the linear driver; and in the state that the rotating arm is not stressed, the central line of the compression bolt is perpendicular to the inclined plane of the wedge-shaped block.
2. A lower limb exercise machine as claimed in claim 1, wherein: the strain gauge sensor is stuck on the inner wall of the front side plate, and notches for improving stress induction are formed on the left side and the right side of the strain gauge sensor on the left side and the right side of the rotating arm.
3. A lower limb exercise machine as claimed in claim 1, wherein: the back subassembly with adjustable around includes along vertical fixed mount that sets up on the seat frame, the fixed first side pipe that is provided with of mount middle part along fore-and-aft direction, first side pipe has seted up a first jack that passes through from top to bottom along the vertical direction, first side pipe interpolation is equipped with the second side pipe, the fixed back that is located the mount front side that is provided with of second side pipe front end, a plurality of second jack has been seted up along the vertical direction to the second side pipe, the length direction evenly arranged of second side pipe is followed to the second jack, the second side pipe is managed at first side intraductal back-and-forth movement can make every second jack all correspond from top to bottom with first jack, peg graft through first bolt between first jack and one of them second jack.
4. A lower limb exercise machine as claimed in claim 1, wherein: the length-adjustable retarder connecting rod comprises a third square pipe and a fourth square pipe which are vertically arranged, the rear side surface of the third square pipe is fixedly connected with the front side plate, the lower end of the third square pipe is lower than the lower end of the front side plate, the fourth square pipe is inserted into the third square pipe from bottom to top, the lower part of the third square pipe is provided with a third jack along the front-back direction, the fourth square pipe is provided with a plurality of fourth jacks along the front-back direction, the fourth jacks are uniformly arranged along the length direction of the fourth square pipe, each fourth jack can vertically correspond to one third jack through the up-down movement of the fourth square pipe in the third square pipe, and the third jack is inserted into one fourth jack through a second bolt; the ankle sheath is fixedly arranged at the rear side of the lower end part of the fourth pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921110.XA CN108992855B (en) | 2018-08-14 | 2018-08-14 | Lower limb body-building device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921110.XA CN108992855B (en) | 2018-08-14 | 2018-08-14 | Lower limb body-building device |
Publications (2)
| Publication Number | Publication Date |
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| CN108992855A CN108992855A (en) | 2018-12-14 |
| CN108992855B true CN108992855B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810921110.XA Active CN108992855B (en) | 2018-08-14 | 2018-08-14 | Lower limb body-building device |
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| CN (1) | CN108992855B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668171Y (en) * | 2003-12-22 | 2005-01-05 | 刘严雄 | Back device for body-building apparatus |
| CN101229420A (en) * | 2007-01-23 | 2008-07-30 | 张浩敏 | Body-building chair with sports signal output organization |
| CN102284178A (en) * | 2010-04-08 | 2011-12-21 | 朴勋根 | Exercise equipment for a handstand |
| CN204034175U (en) * | 2014-08-27 | 2014-12-24 | 鸣泷雅之 | Training and muscle strength test device |
| CN106955461A (en) * | 2017-05-02 | 2017-07-18 | 南京航空航天大学 | A kind of multifunctional office exercise chair |
| CN208809389U (en) * | 2018-08-14 | 2019-05-03 | 黄河科技学院 | A kind of lower limb fitness equipment |
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2018
- 2018-08-14 CN CN201810921110.XA patent/CN108992855B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668171Y (en) * | 2003-12-22 | 2005-01-05 | 刘严雄 | Back device for body-building apparatus |
| CN101229420A (en) * | 2007-01-23 | 2008-07-30 | 张浩敏 | Body-building chair with sports signal output organization |
| CN102284178A (en) * | 2010-04-08 | 2011-12-21 | 朴勋根 | Exercise equipment for a handstand |
| CN204034175U (en) * | 2014-08-27 | 2014-12-24 | 鸣泷雅之 | Training and muscle strength test device |
| CN106955461A (en) * | 2017-05-02 | 2017-07-18 | 南京航空航天大学 | A kind of multifunctional office exercise chair |
| CN208809389U (en) * | 2018-08-14 | 2019-05-03 | 黄河科技学院 | A kind of lower limb fitness equipment |
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| CN108992855A (en) | 2018-12-14 |
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