CN210114633U

CN210114633U - Back stretching rehabilitation chair

Info

Publication number: CN210114633U
Application number: CN201920175392.3U
Authority: CN
Inventors: 杨占岭
Original assignee: Tianjin Yian Health Technology Co Ltd
Current assignee: Tianjin Yian Health Technology Co Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-02-28
Anticipated expiration: 2029-01-31

Abstract

The utility model belongs to the technical field of back stretching rehabilitation chairs, in particular to a back stretching rehabilitation chair, which comprises a bottom plate, wherein a first chute is arranged on the bottom plate, and two ends in the first chute are respectively clamped with a first bearing; the utility model discloses, when the patient carries out the back tensile on the vertical direction, can select suitable balancing weight according to patient's actual health, the patient is through the power of acting on the bracing piece, make the balancing weight towards the direction motion that is close to the third spout, second slider and third slider slide in third spout and fourth spout respectively simultaneously, massage wheel massages patient's back simultaneously, and then can dredge patient's back main and collateral channels, act on the power on the tension ring when the patient, make the slide bar towards the direction motion of keeping away from flexible subassembly, thereby can make patient's back tensile on the horizontal direction, and then can make patient's back obtain abundant tensile on level and vertical direction, the tensile effect in patient's back has been guaranteed.

Description

Back stretching rehabilitation chair

Technical Field

The utility model belongs to the technical field of the tensile recovered chair in back, concretely relates to tensile recovered chair in back.

Background

At present, the wide application of recovered chair is in patient's rehabilitation, when carrying out back rehabilitation to the injured patient in back, often adopt the mode of medication and recovered instrument adjunctie therapy, the tensile recovered chair in back is at the in-process that uses, can the tensile patient's of patient ligament and help patient's activity patient's back, so that the patient is recovered early, but the tensile recovered chair in present back is in the process of using, most of can only stretch in the vertical direction in the in-process of using, can not stretch in the horizontal direction, make the patient can not be comprehensive stretch in the rehabilitation training process, the recovered time of patient has been delayed.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a tensile recovered chair in back has and can carry out the back tensile in perpendicular and horizontal direction, also can adjust the characteristics of the tensile dynamics in back according to patient's health.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a tensile recovered chair in back, includes the bottom plate, its characterized in that: the bottom plate is provided with a first chute, two ends in the first chute are respectively clamped with a first bearing, two first bearings are respectively and movably penetrated with a first rotating shaft, the opposite ends of the two first rotating shafts are fixedly connected with a same first threaded column, the outer surface of the first threaded column is in threaded connection with a first threaded cap, a second chute is arranged in the first chute, a first sliding block is in sliding connection with the second chute, one end of the first sliding block, which is far away from the second chute, is fixedly connected with the first threaded cap, one side of the first threaded cap, which is far away from the first sliding block, is fixedly connected with a fixed block, the fixed block is fixedly connected with an adjusting mechanism, the top end of the adjusting mechanism is fixedly connected with a seat, the seat is provided with a cushion, one end of the first chute is provided with a second through hole, and the first threaded column is fixedly connected with a driven sprocket, the bottom fixedly connected with connecting plate of bottom plate, fixedly connected with third bearing on the connecting plate, the third pivot is worn to be equipped with by the activity in the third bearing, one side fixedly connected with drive sprocket of third pivot, drive sprocket's surface meshing has the chain, the one end of chain is passed the second through-hole and is meshed with driven sprocket.

The bottom plate is fixedly connected with a first supporting plate, the first supporting plate is provided with a placing groove, the top end of the placing groove is provided with a third sliding groove, one side of the third sliding groove is provided with a fourth sliding groove, the top end of the third sliding groove is provided with a first through hole, the third sliding groove is connected with a second sliding block in a sliding manner, the top end of the second sliding block is fixedly connected with a tension rope, the bottom end of the second sliding block is fixedly connected with a fixed rod, the bottom end of the fixed rod is provided with a balancing weight, the balancing weight is positioned in the placing groove, the fourth sliding groove is connected with a third sliding block in a sliding manner, one side of the third sliding block is fixedly connected with one side of the second sliding block, the other side of the third sliding block is fixedly connected with a massage wheel, one side of the top end of the first supporting plate is fixedly connected with a, the top fixedly connected with second supporting wheel of second backup pad, the one end fixedly connected with third supporting wheel of first backup pad is kept away from to the second backup pad, one side fixedly connected with second pivot of second backup pad, the surface activity of second pivot is worn to establish in the second bearing, the surface fixedly connected with third backup pad of second bearing, the one end fixedly connected with bracing piece of second backup pad is kept away from to the third backup pad, the one end of pulling force rope passes first through-hole and bypasses the fixed surface connection of first supporting wheel, second supporting wheel and third supporting wheel and bracing piece.

Fifth chutes are formed in the two ends of the supporting rod, sixth chutes are formed in the fifth chutes, fourth sliding blocks are connected in the sixth chutes in a sliding mode, sliding rods are connected in the fifth chutes in a sliding mode, one ends of the fourth sliding blocks are fixedly connected with the outer surfaces of the sliding rods, telescopic assemblies are fixedly connected in the fifth chutes, one ends of the telescopic assemblies are fixedly connected with one ends of the sliding rods, and tension rings are fixedly connected to the other ends of the sliding rods.

Preferably, adjustment mechanism, first support column, second support column, first spring, seventh spout, second screw thread post, second screw thread cap and the first in command, first support column fixed connection is on the bottom plate, the seventh spout has been seted up on the top of first support column, sliding connection has the second support column in the seventh spout, the first spring of fixedly connected with in the seventh spout, the one end fixed connection of first spring is on the second support column, one side joint and the second screw thread cap of first support column, second screw thread cap internal thread connection has the second screw thread post, the one end of first screw thread post and the surface overlap joint of second support column, the other end of second screw thread post and one side fixed connection of the first in command.

Preferably, the telescopic assembly comprises a telescopic rod and a second spring, the second spring is sleeved on the outer surface of the telescopic rod, one ends of the second spring and the telescopic rod are fixedly connected in a fifth sliding groove, and the other ends of the second spring and the telescopic rod are fixedly connected on the sliding rod.

Preferably, the outer surface of the sliding rod is provided with an anti-slip ring.

Preferably, a spongy cushion is arranged in the tension ring.

Preferably, a second handle is provided at one side of the driving sprocket.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses, through the pulling force rope, the balancing weight, the combined action of massage wheel and bracing piece, when the patient carries out the back tensile on the vertical direction, can select suitable balancing weight according to patient's actual health situation, the patient makes the balancing weight move towards the direction that is close to the third spout through the power of acting on the bracing piece, second slider and third slider slide in third spout and fourth spout respectively simultaneously, the massage wheel massages patient's back simultaneously, and then can dredge patient's back main and collateral channels, through the combined action of slide bar, pulling force ring and flexible subassembly, when the power of patient's effect on pulling force ring, make the slide bar move towards the direction of keeping away from flexible subassembly, thereby can make patient's back tensile on the horizontal direction, the patient is through using this recovered chair, can make patient's back get abundant tensile in level and vertical direction, the effect of stretching the back of the patient is ensured.

2. The utility model discloses, through first screw thread post, first screw cap, drive sprocket, chain and driven sprocket's combined action, the patient can adjust the position of seat apart from first backup pad through rotating the second handle to be suitable for different patients ' use, through adjustment mechanism's setting, can adjust the height of seat apart from the bottom plate, thereby the patient that has been suitable for different heights uses, has improved the comfort level when the patient uses.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the support rod of the present invention;

FIG. 3 is an enlarged schematic structural view of the position A of the present invention;

fig. 4 is a schematic structural diagram of the adjusting mechanism of the present invention;

fig. 5 is a schematic structural view of the telescopic assembly of the present invention;

in the figure: 1. a second support wheel; 2. a first support wheel; 3. a first through hole; 4. a third chute; 5. a second slider; 6. a placement groove; 7. fixing the rod; 8. a balancing weight; 9. a base plate; 10. supporting legs; 11. a second chute; 12. a first threaded cap; 13. a first slider; 14. a fixed block; 15. a first rotating shaft; 16. A first bearing; 17. a driven sprocket; 18. a chain; 19. a first threaded post; 20. a seat; 21. a cushion; 22. an adjustment mechanism; 221. a second support column; 222. a second threaded post; 223. a first handle; 224. A second threaded cap; 225. a seventh chute; 226. a first spring; 227. a first support column; 23; a massage wheel; 24. a third slider; 25. a fourth chute; 26. a tension ring; 27. a support bar; 28. a third support plate; 29. a tension rope; 30. a third support wheel; 31. a first chute; 32. a second through hole; 33. A connecting plate; 34. a third bearing; 35. a third rotating shaft; 36. a drive sprocket; 37. a second support plate; 38. a second handle; 39. an anti-slip ring; 40. a fourth slider; 41. a sixth chute; 42. a fifth chute; 43. a slide bar; 44. a sponge cushion; 45. a telescoping assembly; 451. a telescopic rod; 452. a second spring; 46. a first support plate; 47. a second bearing; 48. a second rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-5, the present invention provides the following technical solutions: a back stretching rehabilitation chair comprises a bottom plate 9, wherein a first sliding groove 31 is formed in the bottom plate 9, first bearings 16 are clamped at two ends in the first sliding groove 31, a first rotating shaft 15 penetrates through the two first bearings 16 in a movable mode, opposite ends of the two first rotating shafts 15 are fixedly connected with first threaded columns 19, outer surface threads of the first threaded columns 19 are connected with first threaded caps 12, a second sliding groove 11 is formed in the first sliding groove 31, a first sliding block 13 is connected in the second sliding groove 11 in a sliding mode, one end, far away from the second sliding groove 11, of the first sliding block 13 is fixedly connected to the first threaded caps 12, one side, far away from the first sliding block 13, of each first threaded cap 12 is fixedly connected with a fixed block 14, an adjusting mechanism 22 is fixedly connected to the fixed block 14, and a seat 20 is fixedly connected to the top end of the adjusting mechanism 22, the seat 20 is provided with a cushion 21, one end of the first sliding chute 31 is provided with a second through hole 32, the first threaded column 19 is fixedly connected with a driven sprocket 17, the bottom end of the bottom plate 9 is fixedly connected with a connecting plate 33, the connecting plate 33 is fixedly connected with a third bearing 34, a third rotating shaft 35 is movably arranged in the third bearing 34 in a penetrating manner, one side of the third rotating shaft 35 is fixedly connected with a driving sprocket 36, the outer surface of the driving sprocket 36 is meshed with a chain 18, one end of the chain 18 penetrates through the second through hole 32 to be meshed with the driven sprocket 17, through the combined action of the first threaded column 19, the first threaded cap 12, the driving sprocket 36, the chain 18 and the driven sprocket 17, a patient can adjust the position of the seat 20 away from the first supporting plate 46 by rotating the second handle 38, so that the use of different patients is applicable, and through the setting of the adjusting mechanism 22, the height of the seat 20 from the bottom plate 9 can be adjusted, so that the chair is suitable for patients with different heights, and the comfort level of the patients in use is improved.

The bottom plate 9 is fixedly connected with a first supporting plate 46, the first supporting plate 46 is provided with a placing groove 6, the top end of the placing groove 6 is provided with a third sliding groove 4, one side of the third sliding groove 4 is provided with a fourth sliding groove 25, the top end of the third sliding groove 4 is provided with a first through hole 3, the third sliding groove 4 is connected with a second sliding block 5 in a sliding manner, the top end of the second sliding block 5 is fixedly connected with a tension rope 29, the bottom end of the second sliding block 5 is fixedly connected with a fixed rod 7, the bottom end of the fixed rod 7 is provided with a balancing weight 8, the balancing weight 8 is positioned in the placing groove 6, the fourth sliding groove 25 is connected with a third sliding block 24 in a sliding manner, the fourth sliding groove 25 and the third sliding block 24 are T-shaped, the third sliding block 24 is ensured not to slide out from the fourth sliding groove 25, and the massage wheel 23 is ensured not to be blocked, one side of the third slider 24 is fixedly connected with one side of the second slider 5, the other side of the third slider 24 is fixedly connected with the massage wheel 23, one side of the top end of the first supporting plate 46 is fixedly connected with the second supporting plate 37, the top end of the first supporting plate 46 is fixedly connected with the first supporting wheel 2, the top end of the second supporting plate 37 is fixedly connected with the second supporting wheel 1, one end of the second supporting plate 37, far away from the first supporting plate 46, is fixedly connected with the third supporting wheel 30, a clamping groove is arranged on the third supporting wheel 30, a tension rope 29 is clamped in the clamping groove, the first supporting wheel 2, the second supporting wheel 1 and the third supporting wheel 30 are identical in structure, the tension rope 29 is ensured not to be separated from the third supporting wheel 30, one side of the second supporting plate 37 is fixedly connected with a second rotating shaft 48, the outer surface of the second rotating shaft 48 movably penetrates through the second bearing 47, a third supporting plate 28 is fixedly connected to the outer surface of the second bearing 47, a supporting rod 27 is fixedly connected to one end of the third supporting plate 28 far away from the second supporting plate 37, one end of the tension rope 29 passes through the first through hole 3 and bypasses the first supporting wheel 2, the second supporting wheel 1 and the third supporting wheel 30 to be fixedly connected with the outer surface of the supporting rod 27, through the combined action of the tension rope 29, the balancing weight 8, the massage wheel 23 and the supporting rod 27, when the patient stretches the back in the vertical direction, the appropriate weight block 8 can be selected according to the actual physical condition of the patient, the patient can move the weight block 8 towards the direction close to the third chute 4 by the force acting on the supporting rod 27, while the second slider 5 and the third slider 24 slide respectively in the third runner 4 and in the fourth runner 25, meanwhile, the massage wheels 23 massage the back of the patient, so that the channels and collaterals on the back of the patient can be dredged.

The two ends of the supporting rod 27 are both provided with a fifth sliding groove 42, a sixth sliding groove 41 is arranged in the fifth sliding groove 42, a fourth sliding block 40 is connected in the sixth sliding groove 41 in a sliding manner, a sliding rod 43 is connected in the fifth sliding groove 42 in a sliding manner, one end of the fourth sliding block 40 is fixedly connected with the outer surface of the sliding rod 43, a telescopic assembly 45 is fixedly connected in the fifth sliding groove 42, one end of the telescopic assembly 45 is fixedly connected with one end of the sliding rod 43, the other end of the sliding rod 43 is fixedly connected with a tension ring 26, through the combined action of the sliding rod 43, the tension ring 26 and the telescopic assembly 45, when the force of the patient acting on the tension ring 26, the sliding rod 43 moves towards the direction far away from the telescopic assembly 45, so that the back of the patient can be stretched in the horizontal direction, and the back of the patient can be sufficiently stretched in the horizontal and vertical directions by using the rehabilitation chair, the effect of stretching the back of the patient is ensured.

Specifically, the adjusting mechanism 22, the first supporting column 227, the second supporting column 221, the first spring 226, the seventh sliding groove 225, the second threaded column 222, the second threaded cap 224 and the first handle 223, the first supporting column 227 is fixedly connected to the bottom plate 9, the seventh sliding groove 225 is formed in the top end of the first supporting column 227, the second supporting column 221 is slidably connected to the seventh sliding groove 225, the first spring 226 is fixedly connected to the seventh sliding groove 225, one end of the first spring 226 is fixedly connected to the second supporting column 221, one side of the first supporting column 227 is clamped to the second threaded cap 224, the second threaded cap 224 is internally threaded with the second threaded column 222, one end of the first threaded column 19 is overlapped with the outer surface of the second supporting column 221, the other end of the second threaded column 222 is fixedly connected to one side of the first handle 223, when a patient wants to adjust the height of the chair 20, the patient can adjust the height of the chair 20 by rotating the first handle 223, which causes the second threaded post 222 to rotate on the second threaded cap 224, which no longer secures the second support post 221, while the second support post 221 moves away from the seventh slide channel 225 under the action of the first spring 226.

Specifically, the telescopic assembly 45 includes a telescopic rod 451 and a second spring 452, the second spring 452 is sleeved on an outer surface of the telescopic rod 451, one end of the second spring 452 and one end of the telescopic rod 451 are fixedly connected in the fifth sliding groove 42, the other end of the second spring 452 and the other end of the telescopic rod 451 are fixedly connected to the sliding rod 43, when the patient pulls the tension ring 26 in the horizontal direction, the second spring 452 and the telescopic rod 451 extend under the action of the force, and when the patient does not exert the force any more, the telescopic rod 451 drives the telescopic rod 451 to return to the original position under the action of the resilience of the second spring 452, so that the back of the patient can be stretched in the horizontal direction.

Specifically, the outer surface of the sliding rod 43 is provided with the anti-slip ring 39, so that the friction force between the hand of the patient and the sliding rod 43 is increased, and the safety of the hand of the patient is further ensured.

In particular, a foam pad 44 is disposed within the tension ring 26 to increase comfort for the patient during use.

Specifically, the second handle 38 is disposed on one side of the driving sprocket 36 to facilitate adjustment of the position of the seat 20 relative to the first support plate 46.

The utility model discloses a theory of operation and use flow: in the utility model, in use, the patient rotates the second handle 38, the driving sprocket 36 drives the driven sprocket 17 to rotate under the combined action of the third bearing 34 and the third rotating shaft 35, so that the first screw cap 12 moves on the first screw post 19, and under the combined action of the first slider 13, the first sliding groove 31, the third rotating shaft 35 and the third bearing 34, the first screw cap 12 is ensured to bring the seat 20 to move towards the direction of the first supporting plate 46, after the position acted by the patient is adjusted to a proper position, the patient can rotate the first handle 223 to enable the second screw post 222 to no longer fix the second supporting post 221 under the rotation of the second screw cap 224, and simultaneously, under the action of the first spring 226, the second supporting post 221 moves towards the direction away from the seventh sliding groove 225, so that the height of the seat 20 can be adjusted, before the back is stretched, when the patient stretches the back in the vertical direction, the patient moves the counterweight block 8 towards the direction close to the third sliding groove 4 by the force acting on the supporting rod 27, the second sliding block 5 and the third sliding block 24 slide in the third sliding groove 4 and the fourth sliding groove 25 respectively, the massage wheel 23 massages the back of the patient, so that the meridians of the back of the patient can be dredged, when the patient stretches the back in the horizontal direction, the patient moves the sliding rod 43 towards the direction far away from the telescopic assembly 45 by the force acting on the tension ring 26, the telescopic rod 451 and the second spring 452 in the telescopic assembly 45 are stretched by the force exerted by the patient, so that the back of the patient can be stretched in the horizontal direction, and the patient can stretch the back of the patient in the horizontal direction sufficiently in the horizontal and vertical directions by using the rehabilitation chair, the effect of stretching the back of the patient is ensured.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A back stretching rehabilitation chair, comprising a bottom plate (9), characterized in that: the bottom plate (9) is provided with a first chute (31), two ends in the first chute (31) are respectively connected with a first bearing (16) in a clamping manner, two first bearings (16) are internally and movably penetrated with a first rotating shaft (15), the opposite ends of the two first rotating shafts (15) are fixedly connected with a same first threaded column (19), the outer surface of the first threaded column (19) is in threaded connection with a first threaded cap (12), a second chute (11) is arranged in the first chute (31), a first sliding block (13) is in sliding connection with the second chute (11), one end, far away from the second chute (11), of the first sliding block (13) is fixedly connected onto the first threaded cap (12), one side, far away from the first sliding block (13), of the first threaded cap (12) is fixedly connected with a fixed block (14), and an adjusting mechanism (22) is fixedly connected onto the fixed block (14), a seat (20) is fixedly connected to the top end of the adjusting mechanism (22), a cushion (21) is arranged on the seat (20), a second through hole (32) is formed in one end of the first sliding groove (31), a driven sprocket (17) is fixedly connected to the first threaded column (19), a connecting plate (33) is fixedly connected to the bottom end of the bottom plate (9), a third bearing (34) is fixedly connected to the connecting plate (33), a third rotating shaft (35) penetrates through the third bearing (34) in a movable mode, a driving sprocket (36) is fixedly connected to one side of the third rotating shaft (35), a chain (18) is meshed with the outer surface of the driving sprocket (36), and one end of the chain (18) penetrates through the second through hole (32) to be meshed with the driven sprocket (17);

the bottom plate (9) is fixedly connected with a first supporting plate (46), the first supporting plate (46) is provided with a placing groove (6), the top end of the placing groove (6) is provided with a third sliding groove (4), one side of the third sliding groove (4) is provided with a fourth sliding groove (25), the top end of the third sliding groove (4) is provided with a first through hole (3), the third sliding groove (4) is connected with a second sliding block (5) in a sliding manner, the top end of the second sliding block (5) is fixedly connected with a tension rope (29), the bottom end of the second sliding block (5) is fixedly connected with a fixing rod (7), the bottom end of the fixing rod (7) is provided with a balancing weight (8), the balancing weight (8) is positioned in the placing groove (6), the fourth sliding groove (25) is connected with a third sliding block (24) in a sliding manner, one side of the third sliding block (24) is fixedly connected with one side of the second, the massage wheel (23) is fixedly connected to the other side of the third sliding block (24), the second supporting plate (37) is fixedly connected to one side of the top end of the first supporting plate (46), the first supporting wheel (2) is fixedly connected to the top end of the first supporting plate (46), the second supporting wheel (1) is fixedly connected to the top end of the second supporting plate (37), the third supporting wheel (30) is fixedly connected to one end, away from the first supporting plate (46), of the second supporting plate (37), the second rotating shaft (48) is fixedly connected to one side of the second supporting plate (37), the outer surface of the second rotating shaft (48) is movably arranged in the second bearing (47), the third supporting plate (28) is fixedly connected to the outer surface of the second bearing (47), the supporting rod (27) is fixedly connected to one end, away from the second supporting plate (37), of the third supporting plate (28), one end of the tension rope (29) passes through the first through hole (3) and bypasses the first supporting wheel (2), the second supporting wheel (1) and the third supporting wheel (30) to be fixedly connected with the outer surface of the supporting rod (27);

fifth spout (42) have all been seted up at the both ends of bracing piece (27), sixth spout (41) have been seted up in fifth spout (42), sliding connection has fourth slider (40) in sixth spout (41), sliding connection has slide bar (43) in fifth spout (42), the one end of fourth slider (40) is connected with the fixed surface of slide bar (43), fixedly connected with telescopic component (45) in fifth spout (42), the one end of telescopic component (45) and the one end fixed connection of slide bar (43), the other end fixedly connected with pulling force ring (26) of slide bar (43).

2. The back stretching rehabilitation chair according to claim 1, wherein: the adjusting mechanism (22) comprises a first supporting column (227), a second supporting column (221), a first spring (226), a seventh sliding groove (225), a second threaded column (222), a second threaded cap (224) and a first handle (223), the first supporting column (227) is fixedly connected to the bottom plate (9), the seventh sliding groove (225) is formed in the top end of the first supporting column (227), the second supporting column (221) is connected to the seventh sliding groove (225) in a sliding mode, the first spring (226) is fixedly connected to the seventh sliding groove (225), one end of the first spring (226) is fixedly connected to the second supporting column (221), one side of the first supporting column (227) is clamped to the second threaded cap (224), the second threaded cap (224) is connected to the second threaded column (222) in an internal thread mode, one end of the first threaded column (19) is in lap joint with the outer surface of the second supporting column (221), the other end of the second threaded column (222) is fixedly connected with one side of the first handle (223).

3. The back stretching rehabilitation chair according to claim 1, wherein: the telescopic assembly (45) comprises a telescopic rod (451) and a second spring (452), the second spring (452) is sleeved on the outer surface of the telescopic rod (451), one ends of the second spring (452) and the telescopic rod (451) are fixedly connected in a fifth sliding groove (42), and the other ends of the second spring (452) and the telescopic rod (451) are fixedly connected on a sliding rod (43).

4. The back stretching rehabilitation chair according to claim 1, wherein: the outer surface of the sliding rod (43) is provided with an anti-slip ring (39).

5. The back stretching rehabilitation chair according to claim 1, wherein: a spongy cushion (44) is arranged in the tension ring (26).

6. The back stretching rehabilitation chair according to claim 1, wherein: and a second handle (38) is arranged on one side of the driving chain wheel (36).