CN108158783A - A kind of leg rehabilitation instrument - Google Patents

Abstract

The invention discloses a kind of leg rehabilitation instruments, belong to medical instruments field, it is characterised in that：Including frame body, No.1 reel, No. two reels, traction rope, counterweight rope and motor；The No.1 reel and No. two reels are located at the top of frame body respectively, respectively including No.1 cylinder, two horn bodies and the No.1 side plate and No. two side plates, No. three side plates at two horn body both ends and No. four side plates that are fixed on No.1 cylinder both ends.Enough auxiliary patient legs movements compared with prior art, help Rehabilitation training.

Description

A kind of leg rehabilitation instrument

Technical field

The present invention relates to a kind of medical instrument, particularly a kind of leg rehabilitation instrument.

Background technology

The problem of part leg bone traumatology patient treatment needs to take outer fixed mode, outer fixation primary after removing is exactly flesh The recovery of meat function of joint.And fixation causes muscular strength to decline for a long time, autokinetic movement is more difficult, it is therefore desirable to pass through external force Help leg exercise.To mitigate manpower burden, can leg exercise be assisted by related equipment at present, this kind of instrument is by motor Driving drives leg to move back and forth.What the process of reciprocating motion was generally realized by the rotating of motor, therefore need Motor is wanted frequently to commutate.And motor turns to commutation moment, motor winding impedance very little is larger in this immediate current, holds The risk that fever causes motor to burn is also easy to produce, influences the service life of motor；In addition also cause in whole process, electricity Motivation power consumption is excessively high, and the electric energy of consuming is more than actually required energy, therefore cause the waste of electric energy.Also, motor turns If leg reciprocating motion being realized to commutation, it is also necessary to record Timing, patient forgets timing or timing error It is easy to cause overexercise.

Invention content

The technical assignment of the present invention is to be directed to more than the deficiencies in the prior art, provides a kind of leg rehabilitation instrument.

The present invention the technical solution to solve the technical problem is that：A kind of leg rehabilitation instrument, it is characterised in that：Including frame Body, No.1 reel, No. two reels, traction rope, counterweight rope and motor；The No.1 reel and No. two reels are located at frame respectively The top of body, respectively including No.1 cylinder, two horn bodies and be fixed on No.1 cylinder both ends No.1 side plate and No. two side plates, No. two No. three side plates and No. four side plates at cylinder both ends；Wherein No. two barrel diameters are less than the diameter of No.1 cylinder；The No.1 volume A main shaft is passed through jointly among cylinder and No. two reels, and the both ends of main shaft are fixedly connected respectively with frame body；No.1 reel and No. two It is fixed respectively on reel and winds traction rope and counterweight rope, one end of traction rope and counterweight rope is rolled up respectively from No.1 reel and No. two It hangs down on cylinder；Wherein traction rope, which hangs down, holds connection hanging ring, and for placing the leg of patient, counterweight rope, which hangs down, holds connection weight, The weight of middle weight is more than pulling force of the patient legs to traction rope；The wherein winding direction of traction rope and counterweight rope is opposite；No. four No. three springs are equipped on the outside of side plate, the end at the end is equipped with No. three spring pockets on main shaft, on main shaft can block No. three springs Structure, the both ends of No. three springs are withstood on respectively in the structure and No. four side plates；No. two side plates towards the side of No. three side plates and The side of No. three side plates towards No. two side plates is respectively equipped with one group of intermeshing ratchet；The teeth directional of two groups of ratchets meets, when two The rotation of number reel, and No.1 reel can be driven to revolve by the effect of ratchet when the counterweight rope on No. two reels moves downward Turn；It, can be by No. two volumes by the effect of ratchet when the counterweight rope in No. two reel rotations and No. two reels moves upwards Ejection makes two groups of ratchets be separated to cylinder outward；Horizontal stroke is fixed at position on main shaft between No. two side plates and No. three side plates To cylindrical No.1 fixed plate, it is located on main shaft at the axle center of No.1 fixed plate；The side wall of No.1 fixed plate is opened equipped with bar shaped Hole, the length direction of bar shaped trepanning along main shaft axial direction, width along No.1 fixed plate circumferencial direction, depth along The radial direction of No.1 fixed plate；The bar shaped block being adapted with bar shaped hole shape, block and bar shaped are equipped in bar shaped trepanning No. four springs are equipped between the bottom of trepanning, are ejected block upper end outward by the effect of No. four springs；No. two side plates and three No. two side plate cavitys, No. three side plate cavitys for accommodating No.1 fixed plate are respectively provided on number side plate, wherein No. two side plate skies The upper end that the diameter of chamber meets block can be stretched out out of bar shaped trepanning, and block can be fully pressed by No. three side plate cavity diameters In bar shaped trepanning；To the convex block of intermediate direction protrusion, the big Grain Full of the convex block there are one being set in the cavity sidewalls of No. two side plates Block, when the convex block is rotated with No. two side plates to block, can be pressed into bar shaped trepanning by foot；The side of No. three side plate cavitys Wall is equipped with the groove that can accommodate block upper end, and the width of further groove along No. three side plate circumferential directions is more than the width of block Degree；The one side in block top towards No. three side plate directions is equipped with chamfer, and groove rear wall is in the angle of inclination adaptable with it； The inclined angle of one of side wall of groove both sides side wall, the direction of the side wall meet when No. two reels rotations are lifted up The sloped sidewall is moved towards block direction during weight；No. four side plates are a gears, and the motor output shaft connects Motor gear is connect, motor gear is meshed with No. four side plate gears.

Compared with prior art, the present invention has advantageous effect following prominent：

1st, patient legs can be assisted to move, helps Rehabilitation training；

2nd, motor can save electric energy without frequently commutating；

3rd, patient motion amplitude can be adjusted.

Description of the drawings

Fig. 1 is the structure diagram of the embodiment of the present invention 1.

Fig. 2 is the sectional view at No. two side plates of the invention and No. three side plates.

Fig. 3 is that the present invention is No.1 reel stereogram in embodiment 1.

Fig. 4 is sectional view along A-A in Fig. 2.

Fig. 5 is 2 structure diagram of the embodiment of the present invention.

Fig. 6 is the structure diagram of the embodiment of the present invention 3.

Fig. 7 is 3 middle gear case of the embodiment of the present invention and the left view of No.1 reel ends.

Fig. 8 is the internal structure schematic diagram of the gear-box of the embodiment of the present invention 3.

Fig. 9 is each structure expanded view in the gear-box of the embodiment of the present invention 3.

Figure 10 is 4 middle gear case of the embodiment of the present invention and the left view of No.1 reel ends.

Figure 11 is the internal structure schematic diagram of the gear-box of the embodiment of the present invention 4.

Figure 12 is each structure expanded view in the gear-box of the embodiment of the present invention 4.

Specific embodiment

The present invention is further described with specific embodiment with reference to the accompanying drawings of the specification.

In embodiment 1, as shown in Figures 1 to 4, the present invention include frame body 7,46, No. two reels 47 of No.1 reel, traction rope 4, Counterweight rope 43 and motor 41.

There is the structure that can be detachably connected with therapeutic bed in 7 lower end of frame body, and the structure can there are many real Existing form, such as 7 lower end of frame body are that Y words inserted link is inserted into therapeutic bed in corresponding jack or 7 lower end of frame body is with fastening The C-shaped configuration of screw hole is fixed on therapeutic bed edge by goat's horn nut.The frame body 7 can also include machinery cover, be used for The part structures that 7 top of frame body is installed are accommodated, machinery cover is the prior art, and appearance can be selected according to specific requirements Select, herein with do not stated in attached drawing tired.

The No.1 reel 46 and No. two reels 47 are located at the top of frame body 7 respectively, respectively including No.1 cylinder 33, two Cylinder 38 and it is fixed on the No.1 side plate 32 at 33 both ends of No.1 cylinder and No. two side plates 35, No. three side plates at two horn bodies, 38 both ends 37 and No. four side plates 39, number order setting is one successively along the sequence from the direction of 46 to No. two reels of No.1 reel 47 To No. four side plates, the side plate 35, three of No.1 side plate 32, two side plate 37 is circle.38 diameter of wherein two horn body is small In the diameter of No.1 cylinder 33.A main shaft 6, No.1 reel are passed through jointly among the No.1 reel 46 and No. two reels 47 46 and No. two reels 47 can be rotated around main shaft 6, the both ends of main shaft 6 are fixedly connected respectively with frame body 7.

It is fixed respectively on No.1 reel 46 and No. two reels 47 and winds traction rope 4, counterweight rope 43, traction rope 4, counterweight rope It hangs down from No.1 reel 46 and No. two reels 47 respectively 43 one end.Wherein traction rope 4, which hangs down, holds connection hanging ring 45, for placing The leg of patient, counterweight rope 43, which hangs down, holds connection weight 44, and the wherein weight of weight 44 is more than drawing of the patient legs to traction rope 4 Power is adjustable counter balance in prioritization scheme, it is described it is adjustable can be to replace counterweight, or filler can be added and subtracted.Wherein one Number reel 46 and traction rope 4, the winding direction of counterweight rope 43 on No. two reels 47 are on the contrary, so as to when No.1 reel 46 and No. two During 47 rotating Vortex of reel, the rope on a reel falls and the rope on another reel rises.

No. four 39 outsides of side plate are equipped with No. three springs 40, wherein the outside refers to roll up far from No.1 on No. four side plates 39 The direction of cylinder 46.No. three springs 40 are sleeved on main shaft 6, and the end at 6 end of main shaft is equipped with the structure that can block No. three springs 40 5, the both ends of No. three springs 40 are withstood on respectively in the structure 5 and No. four side plates 39, thus can be by No. two by No. three springs 40 Reel 47 is pushed up to 46 direction of No.1 sleeve.

No. two side plates 35 are set respectively towards the side of No. three side plates 37 and No. three side plates 37 towards the side of No. two side plates 35 There is one group of intermeshing ratchet 36.The teeth directional of two groups of ratchets 36 meets：When No. two reels 47 rotate, and on No. two reels 47 Counterweight rope 43 No.1 reel 46 can be driven to rotate by the effect of ratchet 36 when moving downward；When No. two reels 47 rotate simultaneously And the counterweight rope 43 on No. two reels 47 is when moving upwards, by ratchet 36 effect can ejection makes outward by No. two reels 47 Two groups of ratchets 36 are separated.

As shown in Fig. 2, it is fixed with lateral circle at position on main shaft 6 between No. two side plates 35 and No. three side plates 37 Cylindricality No.1 fixed plate 56 is located on main shaft 6 at the axle center of No.1 fixed plate 56.The side wall of No.1 fixed plate 56 is equipped with bar shaped Trepanning 53, the length direction of bar shaped trepanning 53 along main shaft 6 axial direction, width along No.1 fixed plate 56 circumference side To, depth along the radial direction of No.1 fixed plate 56.The item being adapted with 53 shape of bar shaped trepanning is equipped in bar shaped trepanning 53 No. four springs 54 are equipped between the bottom of shape block 49, block 49 and bar shaped trepanning 53, will be kept off by the effect of No. four springs 54 49 upper end of block ejects outward.No. two sides for accommodating No.1 fixed plate 56 are respectively provided on No. two side plates 35 and No. three side plates 37 48, No. three side plate cavitys 55 of plate cavity, wherein the upper end that the diameter of No. two side plate cavitys 48 meets block 49 can be opened from bar shaped It is stretched out in hole 53, block 49 can be fully pressed into bar shaped trepanning 53 by No. three 55 diameters of side plate cavity.As shown in figure 3, two Set that there are one the convex block 58 to intermediate direction protrusion, the size satisfactions of the convex block 58, when the convex block on number 48 side wall of side plate cavity 58 with No. two side plates 35 when rotating to block 49, and block 49 can be pressed into bar shaped trepanning 53.No. three side plate cavitys 55 Side wall is equipped with the groove 50 that can accommodate 49 upper end of block, and further groove 50 is more than along the width of No. three 37 circumferential directions of side plate The width of block 49.The one side in 49 top of block towards No. three 37 directions of side plate is equipped with chamfer 52, groove rear wall 51 be in Its adaptable angle of inclination, so as to when block 49 is ejected into groove 50, pass through the effect energy at 51 inclination angle of rear wall It is enough that No. two reels 47 are in axial direction ejected into a distance, so as to make the ratchet on No. two side plates 35 and No. three side plates 37 36 are separated.As shown in figure 4, the angle that one of side wall 57 of 50 both sides side wall of groove is inclined, so as to when the inclined side Block 49 can be pressed into bar shaped trepanning 53 by wall 57 when moving to the top of block 49, and the direction of the side wall 57 meets when No. two The rotation of reel 47 is lifted up the sloped sidewall 57 during weight 44 and is moved towards 49 direction of block.

No. four side plates 39 are a gears, the motor 41 output axis connection motor gear 42, motor gear 42 are meshed with No. four 39 gears of side plate, so as to No. two reels 47 be driven to rotate by motor 41.

Operation principle of the present invention is as follows：Leg is placed in hanging ring 45 according to patient during use, is made by the gravity of leg No.1 reel 46 is driven to rotate with by traction rope 4, it is assumed that the direction of rotation is rotates in the forward direction, the convex block 58 on No. two side plates 35 As No.1 reel 46 rotates, when the convex block 58 is rotated to block 49, block 49 is pressed by bar shaped by the effect of convex block 58 In trepanning 53, left out of groove 50 on No. three side plates 37 so as to the upper end of block 49, block 49 no longer blocks No. two reels 47 movement, No. two reels 47 can rotate, and No. two reels 47 driven to reversely rotate under the action of weight 44, pass through ratchet 36 Effect No.1 reel 46 is driven to reversely rotate therewith, due to traction rope 4, the counterweight rope on No. two reels 47 and No.1 reel 46 43 winding direction is on the contrary, so as to which when weight 44 declines, the upper traction rope 4 of No.1 reel 46 rises, and drives the leg of patient Portion rises；When the groove 50 of No. three side plates 37 is rotated to block 49, block 49 pops up, so as to pass through groove rear wall 51 The effect at inclination angle in axial direction pushes No. two reels 47, so as to make the ratchet 36 on No. three side plates 37 and No. two side plates 35 It is separated, the movement of No.1 reel 46 is no longer limited by No. two reels 47, so as to the No.1 reel under the action of leg weight 46 rotate in the forward direction again, and No. two reels 47 are blocked by block 49 during No.1 reel 46 rotates in the forward direction, stationary, Until the convex block 58 of No.1 reel 46 depresses block 49 ...

No.1 reel 46 rotates back and forth in whole process, and No. two reels 47 only do interval and reversely rotate, and are reversely rotating Weight 44 moves downward therewith in the process, since two horn bodies, 38 diameter of No. two reels 47 is less than a horn of No.1 reel 46 The diameter of body 33, thus every time movement when weight 44 move distance it is smaller, after multiple intermittent movement, weight 44 drops to On ground, a treatment cycle terminates at this time, and patient can terminate to treat.Medical staff starts motor 41 at this time, passes through electricity The effect of motivation 41 drives No. two reels 47 to rotate in the forward direction, and weight 44 is lifted, and when weight 44 is close to No. two reels 47, closes Close motor 41.During motor 41 rotates, No. two reels 47 will not drive No.1 reel 46 to rotate.

After leg carries out several reciprocating motions in the present invention, open motor 41 and once resetted, so as to generally Reduce the opening times of motor 41, so as to reduce the additional consumption of frequently electric energy caused by commutation, play saving electricity Can effect, while also avoid 41 excessive heating of motor and to the injury of motor 41.

In embodiment 2, as shown in figure 5, the present embodiment is derived on the basis of embodiment 1, in addition to No.1 reel 46 Other structures are the same as embodiment 1.No.1 cylinder 33 on No.1 reel 46 is divided into the different multistage of diameter, divides between every both ends Not She You partition board 34 its is mutually isolated, a traction rope 4 is wound on every section of No.1 cylinder 33, on each section of No.1 cylinder 33 Traction rope 4 around identical around direction.When the rotation of No.1 reel 46 is turned around, the move distance of the traction rope 4 on each section is different, That is the motion amplitude of patient legs is different, and different motion amplitudes can be selected hence for the patient of the different state of an illness.

In embodiment 3, it is contemplated that for the very poor patient of part hip joint mobility, if leg exercise speed mistake Secondary injury may be formed to stiff joint soon, the movement with speed-limiting device should be used for this some patients Instrument helps patient to carry out rehabilitation training.In the present embodiment, as shown in Fig. 6 to 9, gear is increased on the basis of embodiment 1 Case 59, in the present invention gear-box 59 can play the role of speed limit, the sports apparatus is enable to be run with slower speed. In the present embodiment, the technical characteristic unrelated with gear-box 59 is not repeated in the present embodiment with embodiment 1.

For ease of narration, set in gear-box 59 towards the direction of No.1 reel 46 as inside, opposite direction is outer Side.

The gear-box 59 is located at No.1 side plate 32, the shell structure that is surrounded including case lid 3 and No.1 side plate 32 and Its internal structure, the case lid 3 are the Cylindrical housing structures of the interior end opening concentric with main shaft 6.The main shaft 6 with Case lid 3 is fixedly connected.

The gear-box 59 is internally provided with gear, connecting rod 25,29, No. two fixed plates 9 of rocking bar and box body 17.

The lateral surface of No.1 side plate 32 is equipped with internal gear 8, and described No. two fixed plates 9 are located in the cavity of internal gear 8 Position in the inner part, No. two fixed plates 9 are fixedly connected with the main shaft 6.It is additionally provided in the cavity of internal gear 8 and internal gear 8 The No.1 gear 14 being meshed.The outside of No.1 gear 14 is equipped with No. two gears 10, and No. two gears 10 and No.1 gear 14 are coaxial And it is fixedly connected, No. two 10 diameters of gear are more than No.1 gear 14.No. two 10 sides of gear are equipped with and are meshed with No. two gears 10 No. three gears 16, wherein the diameter of No. three gears 16 is less than the diameter of No. two gears 10.The outside of No. three gears 16, which is fixed, to be connected No. four gears 15 coaxial with No. three gears 16 are connect, wherein the diameter of No. four gears 15 is more than the diameter of No. three gears 16.No. four 15 side of gear is equipped with No. five gears 18 being meshed with No. four gears 15, wherein the diameter of No. five gears 18 is less than No. four gears 15 Diameter.Wheel shaft both ends where 16, No. four gears of 14, No. two gears 10 of No.1 gear and No. three gears 15 are solid with No. two respectively Fixed board 9 and case lid 3 connect, and the outboard end of No. five 18 place wheel shafts of gear is fixedly connected with case lid 3 to be connect.The inside of No. five gears 18 The cylindrical hollow box body 17 of flat coaxial with No. five gears 18 is fixed with, is equipped with spill spin block 20 in box body 17, five Axis where number gear 18 is secondary axes 19, and the secondary axes 19 are passed through out of hole among spill spin block 20, and spill spin block 20 can surround Secondary axes 19 rotate, and are connected between 17 side wall of spill spin block 20 and box body by No.1 spring 24, between No.1 spring 24 and box body 17 Tie point be located at spill spin block 20 rotation direction front, that is, box body 17 pulls rotation by the effect of No.1 spring 24 when rotating Switch block 20 rotates.The bar shaped cavity along 17 radial direction of box body is equipped among spill spin block 20, sliding block 23 is equipped in the cavity, it is described Sliding block 23 can radially slide.17 inner wall of box body is equipped with bar hole 21, and bar hole 21 is located at 23 inside phase of sliding block Corresponding position, is fixedly connected with cylindrical structure 22 in 23 interior direction of sliding block, and the cylindrical structure 22 is from bar hole 17 inner wall of box body is passed through in 21, is exposed from box body 17 is interior.21 shape of bar hole is in Archimedes spiral, wherein close 24 one end of No.1 spring is closer to the distance from secondary axes 19, distant from secondary axes 19 far from 24 one end of No.1 spring.Pass through bar hole 21 with the effect of cylindrical structure 22, when No.1 spring 24 shortens, sliding block 23 is close to secondary axes 19, when No.1 spring 24 extends, Sliding block 23 is far from secondary axes 19.

The external part that cylindrical structure 22 is exposed to outside box body 17 is hinged with 25 one end of connecting rod, 25 other end of connecting rod and rocking bar 29 are hinged.Described 29 one end of rocking bar is hinged with No. two fixed plates 9, and the other end is equipped with counterweight 27.

The operation principle of gear-box 59 is：When No.1 reel 46 rotates, No.1 reel 46 is by its lateral surface Gear 8 drives one to No. five gear 18 and box body 17 to rotate successively, and box body 17 drives rocking bar 29 to be swung by connecting rod 25, object The gravity of body is swung after the transmission of each gear by 25 drive rocker 29 of connecting rod, when a certain active force of size passes through Rocking bar 29 just does pendulum motion with a constant period when connecting rod 25 is applied to rocking bar 29, and each gear is also therewith with a stabilization Speed rotated, can slowly rotate so as to No.1 reel 46, leg slowly moves therewith.

When leg is placed in different hanging rings 45, the torque that No.1 reel 46 is subject to is different, when No.1 reel 46 receives During larger torque, rotary speed accordingly increases, while the amount of tension of No.1 spring 24 is larger, and spill spin block 20 is with movable slider 23 The direction movement of No.1 spring 24 is directed away from, by the effect of bar hole 21, sliding block 23 is pushed to the direction far from secondary axes 19, Sliding block 23 is rotated around secondary axes 19, and sliding block 23 is far from its radius rotated increase after secondary axes 19, since torque is constant, to connecting rod 25 active force is relatively reduced, after the increase of 23 radius of sliding block, the amplitude of fluctuation increase of rocking bar 29, and because 25 rocking bar 29 of connecting rod Active force reduces, so the swing period increase of rocking bar 29, therefore the rotary speed of No.1 reel 46 slows down, so as to counteract by The part accelerated to rotary speed caused by torque increase；Equally when No.1 reel 46 receive torque it is smaller when, rotation speed Degree is corresponding to be reduced, while the amount of tension of No.1 spring 24 is smaller, the radius of turn increase of sliding block 23, to the active force of connecting rod 25 Reduce, the period of the swing of rocking bar 29 can be reduced, accelerate the falling speed of No.1 reel 46, balance out because No.1 reel 46 by The part that rotary speed caused by reduction reduces.Therefore leg can be made each by the effect of box body 17 and its internal structure Roughly equal movement velocity is remained in the case of kind.

In embodiment 4, the present embodiment is derived on the basis of embodiment 2, and the agent structure in the present embodiment is simultaneously Embodiment 3, hereinafter the distinguishing feature only between the present embodiment and embodiment 3 described, same technique feature is not Tire out again and state.

As shown in Figure 10,11,12, the present embodiment further includes the gear 30 of gear 28, seven of sliding chute rod 26, six and handwheel 1.

The external part of sliding block cylindrical structure 22 is hinged with 25 one end of connecting rod, and 25 other end of connecting rod is cut with scissors with 26 phase of sliding chute rod It connects.The sliding chute rod 26 and the rocking bar 29 are in mating connection, and 29 side of rocking bar is with teeth, form rack structure, On rocking bar 29 with tooth opposite side it is each it is oriented inside and outside the raised structures that stretch out, rocking bar 29 is made to form T section, the cunning Channel bar 26 is equipped with the sliding slot that is adapted with the T section, so as to rocking bar 29 can along sliding chute rod 26 length direction from By sliding.The rack structure of the rocking bar 29 is meshed with No. six gears 28, the sliding chute rod 26 and No. six 28 institutes of gear Wheel shaft be hinged, be equipped with counterweight 27, No. six gears 28 and No. seven teeth far from No. six 28 one end of gear on the rocking bar 29 Wheel 30 is meshed.Wheel shaft outboard end where No. seven gears 30 is stretched out from case lid 3, and external part is equipped with handwheel 1, handwheel 1 and case lid 3 Between be equipped with No. two springs 2, handwheel 1 and No. seven gears 30 are popped up outward by the effect of No. two springs 2.3 inside of case lid Equipped with the fixture block 31 that can be inserted into No. seven gears 30, No. seven gears 30 pop up outward during nature, and fixture block 31 sticks into No. seven teeth In wheel 30, make No. seven gears 30 that can not rotate；Handwheel 1 is pushed inwardly during use, No. seven gears 30 is made to be detached from fixture block 31, So as to rotate No. seven gears 30 by rotation hand wheel 1.

The effect of handwheel 1 in the present embodiment is to adjust the rotary speed of No.1 reel 46, rotation hand wheel 1, drive seven Number gear 30 rotates, and is moved along its length by the rack drives rocking bar 29 on No. six gears 28 and rocking bar 29, works as rocking bar 29 and its counterweight 27 when moving, the position of 29 center of gravity of rocking bar, mainly No. six 28 axle center of gear of 29 distance of centre of gravity of rocking bar can be changed Distance, the variation of 29 center of gravity of rocking bar and No. six 28 axle center distances of gear can change the swing period of rocking bar 29, specially away from From increase, swing period increase, distance reduces swing period and reduces, so as to adjust the movement velocity of leg.According to difference Situation different fallings speed can be set.

It should be noted that the present invention particular embodiment to the present invention have been described in detail, for ability For the technical staff in domain, its various of progress is obviously changed without departing from the spirit and scope of the present invention Become all within protection scope of the present invention.

Claims (1)

1. a kind of leg rehabilitation instrument, it is characterised in that：Including frame body, No.1 reel, No. two reels, traction rope, counterweight rope And motor；The No.1 reel and No. two reels are located at the top of frame body respectively, respectively including No.1 cylinder, two horn bodies and It is fixed on No.1 side plate and No. two side plates, No. three side plates at two horn body both ends and No. four side plates at No.1 cylinder both ends；Wherein No. two barrel diameters are less than the diameter of No.1 cylinder；A main shaft is passed through jointly among the No.1 reel and No. two reels, The both ends of main shaft are fixedly connected respectively with frame body；It is fixed respectively on No.1 reel and No. two reels and winds traction rope and counterweight It hangs down from No.1 reel and No. two reels respectively one end of rope, traction rope and counterweight rope；Wherein traction rope, which hangs down, holds connection to hang Ring, for placing the leg of patient, counterweight rope, which hangs down, holds connection weight, and the wherein weight of weight is more than patient legs to traction rope Pulling force；The wherein winding direction of traction rope and counterweight rope is opposite；No. three springs are equipped on the outside of No. four side plates, No. three spring pockets exist On main shaft, the end at the end is equipped with the structure that can block No. three springs on main shaft, and the both ends of No. three springs withstand on the knot respectively On structure and No. four side plates；The side of No. two side plates towards the side of No. three side plates and No. three side plates towards No. two side plates is respectively equipped with One group of intermeshing ratchet；The teeth directional of two groups of ratchets meets, when No. two reels rotate, and the counterweight rope on No. two reels to No.1 reel can be driven to rotate by the effect of ratchet during lower movement；Counterweight in No. two reel rotations and No. two reels When rope moves upwards, can be ejected No. two reels outward by the effect of ratchet makes two groups of ratchets be separated；It is located on main shaft Laterally cylindrical No.1 fixed plate is fixed at position between No. two side plates and No. three side plates, at the axle center of No.1 fixed plate On main shaft；The side wall of No.1 fixed plate is equipped with bar shaped trepanning, the length direction of bar shaped trepanning along main shaft axial direction side To, width along the circumferencial direction of No.1 fixed plate, depth along No.1 fixed plate radial direction；Be equipped in bar shaped trepanning with No. four springs are equipped between the bottom of the bar shaped block that bar shaped hole shape is adapted, block and bar shaped trepanning, pass through No. four bullets The effect of spring ejects block upper end outward；It is respectively provided on No. two side plates and No. three side plates and accommodates the two of No.1 fixed plate Number side plate cavity, No. three side plate cavitys, wherein the upper end that the diameter of No. two side plate cavitys meets block can be out of bar shaped trepanning It stretches out, block can be fully pressed into bar shaped trepanning by No. three side plate cavity diameters；It is equipped in the cavity sidewalls of No. two side plates One convex block to intermediate direction protrusion, the size of the convex block meets, when the convex block is rotated with No. two side plates to block, energy It is enough that block is pressed into bar shaped trepanning；The side wall of No. three side plate cavitys is equipped with the groove that can accommodate block upper end, concave The width of slot along No. three side plate circumferential directions is more than the width of block；The one side in block top towards No. three side plate directions is equipped with oblique Surface chamfer, groove rear wall are in the angle of inclination adaptable with it；The inclined angle of one of side wall of groove both sides side wall, The direction of the side wall meets the sloped sidewall when No. two reels rotations are lifted up weight and is moved towards block direction；Described No. four side plates are a gears, and the motor output axis connection motor gear, motor gear is meshed with No. four side plate gears.