CN110743136B

CN110743136B - Motion range rehabilitation and nursing device of adjustable hand bracket or leg bracket

Info

Publication number: CN110743136B
Application number: CN201911068206.7A
Authority: CN
Inventors: 王莹; 丰小星; 金雪; 辛新
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-11-13
Anticipated expiration: 2039-11-04
Also published as: CN110743136A

Abstract

The invention relates to the technical field of training equipment and discloses a motion amplitude rehabilitation nursing device capable of adjusting a hand bracket or a leg bracket. This range of motion rehabilitation and nursing device of adjustable hand bracket or leg bracket, through the cooperation of kelly and cardboard, during the use, the training person is flat to be sat on the cushion, leans against the frame, and at this moment the cushion is pushed down, and compression spring contracts, and the cushion drives the movable rod downstream, and on the plane that the kelly droops to the setting of initial cardboard top, the device got into the state of preparing.

Description

Motion range rehabilitation and nursing device of adjustable hand bracket or leg bracket

Technical Field

The invention relates to the technical field of training equipment, in particular to a rehabilitation nursing device capable of adjusting the motion amplitude of a hand bracket or a leg bracket.

Background

Athletes need to carry out high-strength training every day in order to obtain good competition performance, physical injuries such as fracture, ligament or muscle strain and the like can occur in the process, and in order to not delay the training process, athletes can carry out simple rehabilitation training through some rehabilitation training devices when not completing recovery.

Because the height, the arm length, the body state and the training habit of the athlete are different, the positions of the hand bracket and the initial force application point required by the athlete during the rehabilitation training are different, and the athlete needs to sit and lie when using part of the training equipment, and needs to get up to reach the side of the equipment for manual adjustment when adjusting the amplitude of the bracket.

The process of sitting, lying and standing of athletes which are not completely recovered from injuries is inconvenient to change, and due to the fact that the sitting, lying and standing visual angles are different, the athletes can achieve an ideal state only by being adjusted for many times, and operation is more inconvenient, and therefore a rehabilitation nursing device capable of adjusting the motion amplitude of a hand bracket or a leg bracket is provided.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide a rehabilitation and care device capable of adjusting the amplitude of motion of a hand rest or a leg rest, which has the function of controlling the force point of the rest according to the desired conditions of a user.

The invention adopts the following technical scheme for realizing the technical purpose: the motion range rehabilitation nursing device of adjustable hand bracket or leg bracket includes the base, and the top of base is seted up flutedly, cushion and frame are installed at the top of base.

The frame is characterized in that a lower plate is movably connected inside the frame, an extension spring is fixedly connected to the top of the lower plate, the length of the extension spring is smaller than the diameter of the lower plate and the diameter of the upper plate, the top of the extension spring is fixedly connected with the upper plate, a pull rope is installed at the top of the upper plate, a bracket is fixedly connected to one end, away from the upper plate, of the pull rope, and the bracket is located on the left side of the frame.

The movable cavity and the rotating cavity are formed in the left wall of the frame, a movable rod is movably connected inside the movable cavity, a clamping rod is installed at the bottom of the movable rod, a rotating wheel is movably connected inside the rotating cavity, a clamping plate is fixedly connected to the outer side of the rotating wheel, and a gear is fixedly connected to the front side of the rotating wheel.

The left side fixedly connected with lower beam of hypoplastron, the groove of accomodating has been seted up at the top of lower beam, the inside swing joint who accomodates the groove has the upper boom, the mounting groove has been seted up to the bottom of upper boom, the inside swing joint of mounting groove has the gag lever post.

As optimization, the extension groove has been seted up to the left bottom of frame, the cushion is located the left side of frame, and compression spring is installed to the bottom of cushion, plays the effect that resets, and the cushion extends to in the extension groove.

Preferably, the top of the left wall of the frame is fixedly connected with a pulley yoke which is T-shaped, the movable cavity is communicated with the extension groove and the rotating cavity, the movable rod extends into the extension groove and is fixedly connected with the cushion, and the clamping rod is connected with the movable rod through an elastic rope.

Preferably, the rotating wheel is located under the clamping rods, the clamping plates are divided into a fixed portion and an elastic portion, the distance between every two adjacent clamping rods is larger than the width of each clamping rod, the clamping plates in the rotating cavities are in a compressed state, and the clamping plates are bounced off when rotating to the connecting positions of the movable cavities and the rotating cavities.

Preferably, the gear extends to the outer side of the rotating cavity, teeth meshed with the gear are arranged on the left side of the lower rod, the bottom of the lower plate is fixedly connected with a supporting table, the inner wall of the accommodating groove is fixedly connected with a brake block, the lower portion of the brake block is an inclined surface, and the upper portion of the brake block is a plane.

As an optimization, the upper rod is fixedly connected with the upper plate, a smooth bearing is arranged at the joint between the limiting rod and the upper rod, the shape of the mounting groove can limit the rotation angle of the limiting rod to achieve a braking effect, the pull rope is wound on the pulley yoke, and the auxiliary device moves.

As optimization, the top of the clamping plate at the top in the initial state is provided with a plane for supporting and lifting the clamping rod, the tooth pitch of the teeth arranged on the left side of the lower rod and the minimum common divisor of the rotating wheels are larger than the length value of the lower rod, the lower rod is prevented from driving the rotating wheels to rotate for a circle when debugging is carried out, and the clamping rod is supported by the plane at the top of the initial clamping plate and loses the fixing effect.

The invention has the following beneficial effects:

1. this range of motion rehabilitation and nursing device of adjustable hand bracket or leg bracket, through the cooperation of kelly and cardboard, during the use, the training person is flat to be sat on the cushion, leans against the frame, at this moment like 25-26, the cushion is pushed down, and compression spring contracts, like fig. 14-15 again, the cushion drives the movable rod and moves down, on the kelly droops to the plane that initial cardboard top set up, the device gets into the ready state.

At this moment, the bracket can be pulled in an attempt, the customs bracket pulls the pull rope to drive the upper plate to move upwards, the upper plate customs extension spring drives the lower plate to move upwards, the lower plate and the upper plate drive the lower rod and the upper rod to move upwards, the gear drives the rotating wheel to rotate anticlockwise through the teeth when the lower rod moves upwards.

As shown in fig. 14-17, in the rotating process of the rotating wheel, the clamping plate below the clamping rod expands to bounce the clamping rod, the clamping rod falls down after reaching the highest point, the clamping rod falls down to the opening above the rotating cavity and bounces up by the clamping plate again, so that the rotating wheel rotates as long as the bracket is pulled, and the clamping rod is always in an up-and-down moving state.

When the bracket is moved to a proper position, the lower plate can be released, the lower plate moves downwards to drive the lower rod to move, the lower rod drives the rotating wheel to rotate clockwise through the gear, so that the rotating wheel deflects clockwise a bit as shown in figure 18, the clamping rod slides into the space between the two clamping plates to lock the rotating wheel, and the lower rod and the lower plate are also locked.

Can stimulate the bracket during training, the bracket passes through upper plate pulling extension spring, so plays the exercise effect, and the training plays the back of finishing and stands up, and compression spring promotes the cushion and upwards resets, drives the kelly through the movable rod and shifts up, breaks away from runner and cardboard, and the runner unblock, lower beam and hypoplastron unblock move down, return initial condition.

Therefore, the position of the bracket can be conveniently and quickly adjusted according to the height and the arm length of a user or the use habit, and the initial force starting point is controlled, so that the best training effect is achieved.

2. This motion range rehabilitation and nursing device of adjustable hand bracket or leg bracket, through the bottom installation gag lever post at the upper boom, because be rehabilitation training, the user is when training, old wound relapse or take off power, extension spring loses the pulling force and contracts rapidly, because the control of power is lost to the spring upper end, can the horizontal hunting during the shrink, these vibrations pass through the upper plate transmission to the upper boom on, so the upper boom drives the gag lever post vibrations, like fig. 23-24, the gag lever post is blocked by the brake pads, the upper boom is locked, the upper plate is also fixed, prevent that extension spring from contracting fast.

Therefore, the bracket which is quickly contracted is prevented from pulling the arm of the user to cause damage, and meanwhile, the device can be prevented from being damaged by impact, so that the safety is improved, and the service life of the device is prolonged.

3. This motion range rehabilitation and nursing device of adjustable hand bracket or leg bracket, through the runner outside of arranging the cardboard clockwise, again because the state of rotating the intracavity cardboard is shrink, a power can be applyed to the inside in rotation chamber to the cardboard of shrink, when runner anticlockwise rotates like this, the outer curved surface and the friction of rotation intracavity wall of cardboard, the atress is less, and during the runner clockwise rotation, the side and the inside friction of rotation intracavity of cardboard one end, make the cardboard receive a power rather than crooked opposite direction, with the slew velocity who so has slowed down the runner.

This allows the lower plate, extension spring and upper plate to be lowered slowly, preventing the device components from violently impacting each other and causing damage.

Drawings

Fig. 1 is a schematic diagram of a first state of the structure of the rehabilitation nursing device capable of adjusting the motion amplitude of the hand bracket or the leg bracket.

Fig. 2 is a schematic diagram of a second state of the structure of the rehabilitation nursing device capable of adjusting the motion amplitude of the hand bracket or the leg bracket.

Fig. 3 is a schematic diagram of a third state of the structure of the rehabilitation nursing device capable of adjusting the motion amplitude of the hand bracket or the leg bracket.

Fig. 4 is a fourth state diagram of the structure of the rehabilitation nursing device with the motion amplitude adjustable hand bracket or leg bracket of the invention.

Fig. 5 is a fifth state diagram of the structure of the rehabilitation nursing device capable of adjusting the motion amplitude of the hand bracket or the leg bracket.

Fig. 6 is a sixth state diagram of the structure of the rehabilitation nursing device with the motion amplitude adjustable hand bracket or leg bracket of the invention.

Fig. 7 is a partially enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention shown in fig. 1.

Fig. 8 is a partially enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention shown in fig. 2.

Fig. 9 is a partially enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention shown in fig. 3.

Fig. 10 is a partially enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention shown in fig. 4.

Fig. 11 is a partially enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention shown in fig. 5.

Fig. 12 is a partially enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention shown in fig. 6.

Fig. 13 is an enlarged view of the position a of the adjustable hand bracket or leg bracket of the rehabilitation nursing device of the invention.

Fig. 14 is an enlarged view of the position B in fig. 8 of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention.

Fig. 15 is an enlarged view of the point C in fig. 9 of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention.

Fig. 16 is an enlarged view of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention at D in fig. 11.

Fig. 17 is a diagram of a first variation state of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention 16.

Fig. 18 is a diagram of a second variation state of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention 16.

Fig. 19 is a third variation state diagram of the exercise range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the invention 16.

Fig. 20 is a schematic diagram of a first state of an upper rod and a lower rod of the exercise range rehabilitation and nursing device structure of the adjustable hand bracket or leg bracket.

Fig. 21 is a schematic diagram of a second state of the upper rod and the lower rod of the exercise range adjustable rehabilitation nursing device with the hand bracket or the leg bracket.

Fig. 22 is an enlarged view of the movement range rehabilitation and nursing device of the adjustable hand bracket or leg bracket of the present invention at E in fig. 20.

Fig. 23 is a first state diagram at F in fig. 21 of the rehabilitation and nursing device for adjusting the motion amplitude of the hand bracket or the leg bracket according to the present invention.

Fig. 24 is a second state diagram at F in fig. 21 of the rehabilitation and nursing device for adjusting the motion amplitude of the hand bracket or the leg bracket according to the present invention.

Fig. 25 is a first state diagram of the cushion of the structure of the rehabilitation and nursing device with adjustable motion amplitude of the hand bracket or the leg bracket.

Fig. 26 is a second state diagram of the structural cushion of the exercise range rehabilitation and nursing device with the adjustable hand bracket or the leg bracket.

In the figure: 1-base, 2-cushion, 3-frame, 4-lower plate, 5-extension spring, 6-upper plate, 7-pull rope, 8-bracket, 9-movable cavity, 10-movable rod, 11-rotary cavity, 12-clamping rod, 13-rotating wheel, 14-clamping plate, 15-gear, 16-lower rod, 17-accommodating groove, 18-upper rod, 19-mounting groove and 20-limiting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-26, the range of motion rehabilitation and nursing device of adjustable hand bracket or leg bracket, including base 1, the top of base 1 is seted up flutedly, cushion 2 and frame 3 are installed to the top of base 1, cushion 2 is located the left side of frame 3, and compression spring is installed to the bottom of cushion 2, plays the effect of restoring to the throne, and cushion 2 extends to the extension inslot, and the extension groove has been seted up to the left bottom of frame 3, and the top fixedly connected with pulley yoke of frame 3 left wall, the pulley yoke becomes the T shape.

Frame 3's inside swing joint has hypoplastron 4, the bottom fixedly connected with saddle of hypoplastron 4, the top fixedly connected with extension spring 5 of hypoplastron 4, extension spring 5's length is less than hypoplastron 4 and upper plate 6's diameter, extension spring 5's top fixedly connected with upper plate 6, stay cord 7 is installed at the top of upper plate 6, stay cord 7 twines on the pulley yoke, auxiliary device removes, the one end fixedly connected with bracket 8 of upper plate 6 is kept away from to stay cord 7, bracket 8 is located frame 3's left side.

A movable cavity 9 and a rotating cavity 11 are arranged inside the left wall of the frame 3, the movable cavity 9 is communicated with an extending groove and the rotating cavity 11, a movable rod 10 is movably connected inside the movable cavity 9, the movable rod 10 extends into the extending groove and is fixedly connected with the cushion 2, a clamping rod 12 is arranged at the bottom of the movable rod 10, the clamping rod 12 is connected with the movable rod 10 through an elastic rope, a rotating wheel 13 is movably connected inside the rotating cavity 11, the rotating wheel 13 is positioned under the clamping rod 12, a clamping plate 14 is fixedly connected to the outer side of the rotating wheel 13, the clamping plate 14 is divided into a fixed part and an elastic part, the distance between two adjacent clamping rods 14 is larger than the width of the clamping rod 12, the clamping plate 14 in the rotating cavity 11 is in a compressed state, when the clamping plate 14 rotates to the joint of the movable cavity 9 and the rotating cavity 11, the clamping plate springs open, a gear 15 is fixedly connected to the front face of the rotating wheel 13, and the gear 15 extends to the outer side of the rotating cavity 11.

Lower plate 4's left side fixedly connected with lower beam 16, the left side of lower beam 16 is provided with the tooth with 15 meshing of gear, lower beam 16's top has been seted up and has been accomodate groove 17, accomodate the inner wall fixedly connected with brake pads of groove 17, the below of brake pads is the inclined plane, the top is the plane, the inside swing joint who accomodates groove 17 has upper boom 18, the fixed connection of upper boom 18 and upper plate 6, mounting groove 19 has been seted up to the bottom of upper boom 18, the shape of mounting groove 19 can restrict the turned angle of gag lever post 20, reach braking action, the inside swing joint of mounting groove 19 has gag lever post 20, the junction between gag lever post 20 and the upper boom 18 sets up glossy bearing.

The cardboard 14 top at initial state top is provided with the plane that a support lifted card pole 12, and the minimum common divisor that lower beam 16 left side set up the tooth pitch of tooth and runner 13 is greater than the length value of lower beam 16, and lower beam 16 drives runner 13 and just in time rotates round when preventing to debug, and card pole 12 is held by the plane at initial cardboard 14 top, loses fixed effect.

When the device is used, a trainer sits on the seat cushion 2 flatly and leans against the frame 3, at this time, as shown in figures 25-26, the seat cushion 2 is pressed downwards, the compression spring is contracted, as shown in figures 14-15, the seat cushion 2 drives the movable rod 10 to move downwards, the clamping rod 12 drops to the plane arranged at the top of the initial clamping plate 14, and the device enters a preparation state.

At this moment, a user can try to pull the bracket 8, the customs bracket 8 pulls the pull rope 7 to drive the upper plate 6 to move upwards, the upper plate 6 customs extension spring 5 drives the lower plate 4 to move upwards, the lower plate 4 and the upper plate 6 drive the lower rod 16 and the upper rod 18 to move upwards, the lower rod 16 drives the gear 15 to rotate anticlockwise through the teeth when moving upwards, and the gear 15 drives the rotating wheel 13 to rotate anticlockwise.

As shown in fig. 14-17, during the rotation of the wheel 13, the catch plate 14 under the catch rod 12 is relaxed to bounce the catch rod 12, the catch rod 12 starts to fall down after reaching the highest point, the catch rod 12 falls down to the opening above the rotation cavity 11 and is bounced again by the catch plate 14, so that as long as the bracket 8 is pulled, the wheel 13 rotates, and the catch rod 12 is always in the up-and-down moving state.

When the bracket 8 is moved to a proper position, the user can release the hand, the lower plate 4 moves downwards to drive the lower rod 16 to move, the lower rod 16 drives the rotating wheel 13 to rotate clockwise through the gear 15, so that the rotating wheel 13 deflects clockwise a little as shown in fig. 18, the clamping rod 12 slides into the space between the two clamping plates 14 to lock the rotating wheel 13, and the lower rod 16 and the lower plate 4 are also locked.

Can stimulate bracket 8 during the training, bracket 8 passes through 6 pulling extension spring 5 of upper plate, so plays the exercise effect, and the training is finished the back and is played, and compression spring promotes cushion 2 and upwards resets, drives kelly 12 through movable rod 10 and shifts up, breaks away from runner 13 and cardboard 14, and runner 13 unblock,

lower beam

16 and 4 unblocks of hypoplastron move down, return initial condition.

Because of rehabilitation training, when a user trains, old injuries relapse or lose force, the extension spring 5 loses tension and contracts quickly, when the extension spring contracts, the upper end of the spring loses force control, the extension spring can swing left and right, the vibration is transmitted to the upper rod 18 through the upper plate 6, the upper rod 18 drives the limiting rod 20 to vibrate, as shown in figures 23-24, the limiting rod 20 is clamped by a brake block, the upper rod 18 is locked, the upper plate 6 is also fixed, and the extension spring 5 is prevented from contracting quickly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Motion range rehabilitation and nursing device of adjustable hand bracket or leg bracket, including base (1), its characterized in that: the top of the base (1) is provided with a groove, the top of the base (1) is provided with a cushion (2) and a frame (3), the cushion (2) is positioned on the left side of the frame (3), the bottom of the cushion (2) is provided with a compression spring to play a role of resetting, the cushion (2) extends into an extension groove, the bottom of the left side of the frame (3) is provided with an extension groove, the top of the left wall of the frame (3) is fixedly connected with a pulley frame, and the pulley frame is in a T shape;

the inner part of the frame (3) is movably connected with a lower plate (4), the bottom of the lower plate (4) is fixedly connected with a supporting platform, the top of the lower plate (4) is fixedly connected with an extension spring (5), the length of the extension spring (5) is smaller than the diameters of the lower plate (4) and an upper plate (6), the top of the extension spring (5) is fixedly connected with the upper plate (6), the top of the upper plate (6) is provided with a pull rope (7), the pull rope (7) is wound on a pulley frame, the auxiliary device moves, one end, far away from the upper plate (6), of the pull rope (7) is fixedly connected with a bracket (8), and the bracket (8) is positioned on the left;

a movable cavity (9) and a rotating cavity (11) are formed in the left wall of a frame (3), the movable cavity (9) is communicated with an extending groove and the rotating cavity (11), a movable rod (10) is movably connected in the movable cavity (9), the movable rod (10) extends into the extending groove and is fixedly connected with a cushion (2), a clamping rod (12) is installed at the bottom of the movable rod (10), the clamping rod (12) is connected with the movable rod (10) through an elastic rope, a rotating wheel (13) is movably connected in the rotating cavity (11), the rotating wheel (13) is positioned under the clamping rod (12), a clamping plate (14) is fixedly connected to the outer side of the rotating wheel (13), the clamping plate (14) is divided into a fixed part and an elastic part, the distance between two adjacent clamping rods (14) is larger than the width of the clamping rod (12), the clamping plate (14) in the rotating cavity (11) is in a compression state, and is flicked when the clamping plate (14) rotates to the joint of the movable cavity (9) and the rotating cavity (11), the front surface of the rotating wheel (13) is fixedly connected with a gear (15), and the gear (15) extends to the outer side of the rotating cavity (11);

the left side of lower plate (4) is fixedly connected with lower rod (16), the left side of lower rod (16) is provided with teeth meshed with gear (15), the top of lower rod (16) is provided with accommodating groove (17), the inner wall of accommodating groove (17) is fixedly connected with brake block, the lower side of brake block is an inclined plane, the upper side is a plane, the inside of accommodating groove (17) is movably connected with upper rod (18), upper rod (18) is fixedly connected with upper plate (6), the bottom of upper rod (18) is provided with mounting groove (19), the shape of mounting groove (19) can limit the rotation angle of limiting rod (20) to achieve the braking effect, the inside of mounting groove (19) is movably connected with limiting rod (20), and the junction between limiting rod (20) and upper rod (18) is provided with a smooth bearing;

the top of the uppermost clamping plate (14) in the initial state is provided with a plane for supporting and lifting the clamping rod (12), the tooth pitch of the teeth arranged on the left side of the lower rod (16) and the minimum common divisor of the rotating wheels (13) are larger than the length value of the lower rod (16), so that the situation that the rotating wheels (13) are driven by the lower rod (16) to rotate for a circle and a whole circle when debugging is carried out is prevented, and the clamping rod (12) is supported by the plane on the top of the initial clamping plate (14) and loses the fixing effect;

when the device is used, a trainer sits on the seat cushion (2) horizontally, leans against the frame (3), presses down the seat cushion (2), the compression spring contracts, the seat cushion (2) drives the movable rod (10) to move downwards, the clamping rod (12) falls on a plane arranged at the top of the initial clamping plate (14), and the device enters a preparation state;

at the moment, a bracket (8) can be pulled in an attempt, a pull rope (7) is pulled through the bracket (8) to drive an upper plate (6) to move upwards, the upper plate (6) drives a lower plate (4) to move upwards through an extension spring (5), the lower plate (4) and the upper plate (6) drive a lower rod (16) and an upper rod (18) to move upwards, the lower rod (16) drives a gear (15) to rotate anticlockwise through teeth when moving upwards, and the gear (15) drives a rotating wheel (13) to rotate anticlockwise;

when the rotating wheel (13) rotates, the clamping plate (14) below the clamping rod (12) expands, the clamping rod (12) is bounced, the clamping rod (12) starts to fall after reaching the highest point, the clamping rod (12) falls to the opening above the rotating cavity (11) and is bounced again by the clamping plate (14), and therefore as long as the bracket (8) is pulled, the rotating wheel (13) rotates, and the clamping rod (12) is always in an up-and-down moving state;

when the bracket (8) moves to a proper position, hands can be released, the lower plate (4) moves downwards to drive the lower rod (16) to move, the lower rod (16) drives the rotating wheel (13) to rotate clockwise through the gear (15), the rotating wheel (13) deflects clockwise a little, the clamping rod (12) slides into the space between the two clamping plates (14) to lock the rotating wheel (13), and thus the lower rod (16) and the lower plate (4) are also locked;

the bracket (8) can be pulled during training, the bracket (8) pulls the extension spring (5) through the upper plate (6), so that the training effect is achieved, the seat cushion (2) is pushed to reset upwards after the training is finished, the clamping rod (12) is driven to move upwards through the movable rod (10) to be separated from the rotating wheel (13) and the clamping plate (14), the rotating wheel (13) is unlocked, the lower rod (16) and the lower plate (4) are unlocked to move downwards, and the initial state is returned;

because be the rehabilitation training, the user is when the training, old injury relapse or take off power, extension spring (5) lose the rapid shrink of pulling force, because the control of the upper end loss power, can the horizontal hunting during the shrink, these vibrations are passed through upper plate (6) and are transmitted to upper boom (18), so upper boom (18) drive gag lever post (20) vibrations, gag lever post (20) are blocked by the brake block, upper boom (18) are locked, upper plate (6) are also fixed, prevent extension spring (5) rapid contraction.