Waist bending rehabilitation training device

Abstract

The invention relates to the technical field of waist rehabilitation equipment, in particular to a waist bending rehabilitation trainer which comprises an outer fixing frame, and a rotary bending assembly is arranged in the middle of the bottom face of the outer fixing frame. The rotating and bending assembly comprises a bottom plate, a pedal located above the bottom plate and used for the waist rehabilitation patient to stand and a plurality of steel ropes capable of driving the pedal to move along the top face of the bottom plate, and a plurality of rotating grooves distributed in a concentric circle mode are formed in the top face of the bottom plate. Connecting grooves are formed between every two adjacent rotating grooves and between the innermost rotating groove and the circle center, blocking plate structures are arranged in the groove walls of the front sides of the connecting grooves, and limiting blocks are arranged in the middles of the bottom faces of the pedals. During use, a patient can stand on the pedal, and the pedal is pulled by the steel rope to slowly rotate along the rotating groove to drive the lower body and the upper body of the patient to relatively rotate, so that the lumbar vertebra is relaxed, and the training effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lumbar rehabilitation equipment, and specifically relates to a lumbar bending rehabilitation trainer. Background Art

[0002] In modern medicine, more and more attention is paid to the rehabilitation of patients after treatment. In some large hospitals, some rehabilitation training equipment is often provided to help patients recover health faster. Especially for patients with lumbar injuries, if effective and scientific rehabilitation training is not carried out, it is extremely easy to leave sequelae.

[0003] For example, a lumbar and leg assisted bending rehabilitation training device and method disclosed in the invention patent with the authorization announcement number CN115105358A in the field of rehabilitation training technology includes a bed body. A bending mechanism is arranged on the top of the bed body, support legs are fixedly connected to the bottom of the bed body, a leg bending mechanism is arranged on the top of the bed body, an adjusting mechanism is arranged on one side of the bed body, and a transmission mechanism is arranged inside the bed body. The bending mechanism includes a flap movably connected to the top of the bed body through a first rotating shaft. A lying cushion is adhered to the top of the flap, and a sitting cushion is adhered to the top of the bed body; and a lumbar rehabilitation training device for the rehabilitation medicine department disclosed in the patent with the authorization announcement number CN217744974U in the technical field of medical rehabilitation equipment includes a fixed support column and a fixed base. The fixed support column is installed at the upper rear position of the fixed base. In the present invention, the lumbar height adjustment block makes it easy to adjust. The inner through hole of the circular sleeve is convenient for sleeving on the fixed support column, and then the fastening bolts of the first limit block and the second limit block on both sides of the front end of the circular sleeve are locked.

[0004] Although the above two devices can both perform bending rehabilitation training, they have the following defects: First, one of the above-mentioned equipment is horizontal and the other is sitting type. When in use, the upper body of the patient is directly driven by a driving device to rotate and bend in a vertical plane, and the patient's waist doesn't need to exert much effort, resulting in a poor training effect; Second, both of them drive the patient to rotate and bend in a vertical plane in a way similar to sit-ups, which cannot achieve a good training effect on the patient's lumbar spine. To solve the above problems, we propose a lumbar bending rehabilitation trainer.

[0005] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a lumbar bending rehabilitation trainer to solve the above problems of the prior art.

[0007] To achieve the above object, the present invention provides a lumbar curvature rehabilitation trainer, including an external fixing frame. In the middle of the bottom surface of the external fixing frame, there is a rotary bending assembly. The rotary bending assembly includes a bottom plate, a pedal board for a lumbar rehabilitation patient to stand on, which is arranged above the bottom plate, and several steel cable ropes that can drive the pedal board to move along the top surface of the bottom plate. On the top surface of the bottom plate, there are several concentrically distributed rotary grooves. Between adjacent two of the rotary grooves and between the innermost rotary groove and the center of the circle, there are connecting grooves. Inside the front groove wall of the connecting groove, there is a baffle structure. In the middle of the bottom surface of the pedal board, there is a limiting block;

[0008] The baffle structure includes a pressing column embedded in the groove wall of the connecting groove, a resisting block fixedly connected to the inner end of the pressing column, resisting rods arranged on both sides of the resisting block, and baffles respectively located at the inner and outer openings of the connecting groove. At the front end of the baffle, there is a connecting block. At the rear end of the connecting block, there is a rotating rod penetrating up and down. On the side wall of the rotating rod near the top, there is a gear. The outer end of the resisting rod is fixedly connected with a toothed plate meshing with the gear.

[0009] In the middle between the left and right side walls of the external fixing frame, there is a supporting plate. In the middle of the supporting plate, there is a waist activity opening for the patient to pass through. On the front side wall and the rear side wall of the waist activity opening, there are sponge soft pads and a waist propping assembly respectively.

[0010] In the technical solution of the present invention, on the top surface of the pedal board, there are spiral anti-slip lines. On the top surface of the pedal board, there are several regularly distributed connecting rings corresponding to and connected with the steel cable ropes. The other ends of the steel cable ropes pass through the side walls of the corresponding side of the external fixing frame and are respectively connected with a driving rope-receiving device. Inside the bottom surface and the lower half side wall of the limiting block, several regularly distributed steel balls are embedded.

[0011] In the technical solution of the present invention, the size of the baffle is adapted to the size of the connecting groove. The bending radian of the baffle corresponds to the bending radian of the corresponding rotary groove. And when the baffle is closed, the outer surface of the baffle is flush with the corresponding groove wall of the corresponding rotary groove. The outer end face of the pressing column is flush with the rear groove wall of the connecting groove.

[0012] In the technical solution of the present invention, at the position corresponding to the baffle in the front groove wall of the connecting groove, there is a baffle groove. The depth of the baffle groove is greater than the thickness of the baffle.

[0013] In the technical solution of the present invention, in the middle of the rear side wall of the connecting groove, there is a pressing groove adapted to the size of the resisting block. In the middle of the rear side wall of the pressing groove, there is a rebounding mechanism. The rebounding mechanism includes a fixed sleeve, a movable rod inserted into the fixed sleeve at the rear end and slidably connected with it, and a spring located inside the fixed sleeve.

[0014] In the technical solution of the present invention, the abutting block is a trapezoidal block with inclined surfaces on both the left and right side walls. The end surface of the abutting rod that abuts is an inclined surface that fits the corresponding inclined surface of the corresponding abutting block. And a clamping block is provided on the abutting end surface of the abutting rod, and a clamping block groove for the clamping block to slide is provided on the corresponding inclined surface of the corresponding abutting block. In the middle of the bottom surface of the outer fixing frame, a hydraulic cylinder for changing the height of the rotating and bending assembly is provided.

[0015] In the technical solution of the present invention, fixing handles are symmetrically provided on both sides of the top surface of the support plate on the left and right sides of the waist activity opening. The waist top support assembly includes a waist support member, an electric push rod installed in the support plate and with its telescopic end fixedly connected to the rear side wall of the waist support member, and a number of regularly distributed massage rollers in the waist support member.

[0016] In the technical solution of the present invention, the massage rollers are installed inside the waist support member through a mounting frame. A transmission rod parallel to the massage rollers is provided at the bottom end of the mounting frame. The adjacent two transmission rods are connected by a universal joint for transmission. On the inner wall of the front side of the waist support member near the right end, a first mounting plate is provided. A motor is fixed on the left side of the first mounting plate. The output end of the motor is coaxially and fixedly connected to the left end of the rightmost transmission rod. The mounting frame is fixedly connected to the inner wall of the front side of the waist support member through a number of second mounting plates.

[0017] In the technical solution of the present invention, chutes are symmetrically provided on the left and right sides of the front side of the top surface of the support plate at the waist activity opening. An activity handle assembly is provided in the chutes. The activity handle assembly includes a slider adapted to the chutes, an activity handle on the top surface of the slider, and a compression cavity between the slider and the rear side wall of the chutes.

[0018] In the technical solution of the present invention, the compression cavity includes a compression rod and an air cavity. The front end of the compression rod is fixedly connected to the rear side wall of the corresponding slider, and the rear end is slidably connected to the air cavity. A piston with the same inner diameter as the air cavity is provided at the rear end of the compression rod.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0020] 1. In the present invention, during use, the patient can stand on the pedal and hold the fixing handle, and pull the pedal through the steel cable to slowly rotate it along the rotation groove, so as to drive the relative rotation of the lower body and the upper body of the patient, thereby achieving multi-angle relaxation and stretching of the lumbar spine and improving the training effect.

[0021] 2. In the present invention, when the patient is using it, they can also hold the activity handle and push it forward, thereby driving the air in the compression cavity of the compression rod to achieve the effect of resistance, so as to train the lumbar muscles. Description of the Drawings

[0022] Figure 1Schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Cross-sectional view of the overall structure of the present invention;

[0024] Figure 3 Exploded view of the structure of the rotary bending assembly in the present invention;

[0025] Figure 4 Enlarged view of the structure at A in the present invention;

[0026] Figure 5 Partial cross-sectional view of the structure of the bottom plate in the present invention;

[0027] Figure 6 Enlarged view of the structure at B in the present invention;

[0028] Figure 7 Exploded view of the structure of the baffle in the present invention;

[0029] Figure 8 Enlarged view of the structure at C in the present invention;

[0030] Figure 9 Enlarged view of the structure at D in the present invention;

[0031] Figure 10 Exploded view of the connection between the abutting block and the abutting rod in the present invention;

[0032] Figure 11 Cross-sectional view of the structure of the support plate in the present invention;

[0033] Figure 12 Cross-sectional view of the waist top support structure in the present invention;

[0034] Figure 13 Schematic diagram of the movable handle assembly in the present invention.

[0035] Explanation of reference numerals:

[0036] 1. Outer fixing frame;

[0037] 2. Rotary bending assembly; 21. Bottom plate; 211. Pressing groove; 22. Pedal; 221. Anti-slip pattern; 222. Connecting ring; 223. Limiting block; 2231. Steel ball; 23. Steel cable rope; 24. Hydraulic cylinder; 25. Baffle structure; 251. Baffle; 252. Connecting block; 253. Rotating rod; 2531. Gear; 254. Rack; 255. Abutting rod; 256. Pressing column; 257. Abutting block; 258. Rebound mechanism; 2581. Fixed sleeve; 2582. Movable rod; 2583. Spring; 26. Connecting groove; 261. Baffle groove; 27. Rotating groove;

[0038] 3. Support plate; 31. Waist movable opening; 32. Sliding groove;

[0039] 4. Fixed handle

[0040] 5. Sponge cushion

[0041] 6. Lumbar support assembly; 61. Electric push rod; 62. Lumbar support piece; 63. Massage roller; 64. Motor; 65. First mounting plate; 66. Second mounting plate; 67. Transmission rod; 68. Universal joint; 69. Mounting bracket

[0042] 7. Movable handle assembly; 71. Movable handle; 72. Slide block; 73. Compression chamber; 731. Compression rod; 732. Air chamber Detailed implementation manners

[0043] The following will describe in detail the detailed implementation manners of the present invention in conjunction with the accompanying drawings. However, it should be understood that the protection scope of the present invention is not limited by the detailed implementation manners

[0044] Unless otherwise clearly stated, throughout the specification and claims, the term "comprise" or its variations such as "comprises" or "including" etc. will be understood to include the stated elements or components, without excluding other elements or other components

[0045] Referring to Figures 1 - 13 As shown, a lumbar bending rehabilitation trainer of the present invention includes an outer fixing frame 1. A rotary bending assembly 2 is provided in the middle of the bottom surface of the outer fixing frame 1. The rotary bending assembly 2 includes a bottom plate 21, a pedal 22 for a lumbar rehabilitation patient to stand above the bottom plate 21, and a plurality of wire ropes 23 that can drive the pedal 22 to move along the top surface of the bottom plate 21. The wire ropes 23 are distributed in a square at the four corners. A plurality of concentrically distributed rotary grooves 27 are provided on the top surface of the bottom plate 21. Connecting grooves 26 are provided between adjacent two rotary grooves 27 and between the innermost rotary groove 27 and the center of the circle. A blocking plate structure 25 is provided in the front groove wall of the connecting groove 26. A limiting block 223 is provided in the middle of the bottom surface of the pedal 22. By slowly pulling the pedal 22 along the rotary groove 27 through the wire ropes 23, the lower body of the lumbar rehabilitation patient is driven to rotate, thereby driving the patient's waist to bend in different directions to achieve the training and rehabilitation effect. At the same time, the rotation amplitudes of the rotary grooves 27 with different diameters are different, which are suitable for use in different rehabilitation stages

[0046] The baffle structure 25 includes a pressing column 256 embedded in the groove wall of the connecting groove 26, a resisting block 257 fixedly connected to the inner end of the pressing column 256, resisting rods 255 arranged on both sides of the resisting block 257, and baffles 251 respectively located at the inner and outer openings of the connecting groove 26. A connecting block 252 is fixed to the front end of the baffle 251. A rotating rod 253 penetrating through vertically is provided at the rear of the connecting block 252. The rotating rod 253 is fixedly connected to the connecting block 252, and its top end is embedded in the bottom plate 21. A gear 2531 is provided on the side wall of the rotating rod 253 near the top. A toothed plate 254 meshing with the gear 2531 is fixedly connected to the outer end of the resisting rod 255. By providing the baffle structure 25, it is avoided that the pedal 22 enters the connecting groove 26 when rotating along the rotating groove 27, resulting in the inability of the pedal 22 to rotate and affecting the use.

[0047] A support plate 3 is provided in the middle between the left and right side walls of the outer fixing frame 1. A waist activity opening 31 for the patient to pass through is provided in the middle of the support plate 3. A sponge soft pad 5 and a waist supporting assembly 6 are respectively provided on the front and rear side walls of the waist activity opening 31. When in use, the upper body of the patient passes through the waist activity opening 31 and stands on the pedal 22, with the waist and back leaning against the waist supporting assembly 6 and the abdomen facing the sponge soft pad 5.

[0048] In this embodiment, as Figures 2 - 4 shown, the top surface of the pedal 22 is provided with spiral anti-slip lines 221, which facilitate the patient to step on and avoid accidents when standing and using. A plurality of connecting rings 222 are provided on the top surface of the pedal 22 and are regularly distributed and correspondingly connected to the steel cable 23. The other end of the steel cable 23 passes through the side wall of the corresponding outer fixing frame 1 and is respectively connected to the driving cable winding device. The driving cable winding device is controlled by an external PLC controller to drive the retraction and release of different steel cables 23, thereby driving the pedal 22 to rotate along the rotating groove 27. A plurality of regularly distributed steel balls 2231 are embedded in the bottom surface and the lower half of the side wall of the limiting block 223. By providing the steel balls 2231, the friction between the pedal 22 and the rotating groove 27 after the patient stands is reduced, and the problem that the rotation bending assembly 2 is difficult to move due to excessive friction is avoided.

[0049] Furthermore, as Figure 5 shown, the size of the baffle 251 is adapted to the size of the connecting groove 26, the bending arc of the baffle 251 corresponds to the bending arc of the corresponding rotating groove 27, and the outer surface of the baffle 251 when closed is flush with the corresponding groove wall of the corresponding rotating groove 27. The outer end face of the pressing column 256 is flush with the rear groove wall of the connecting groove 26, ensuring that when the pedal 22 rotates along the rotating groove 27 or changes the rotation amplitude, the baffle 251 and the pressing column 256 will not protrude outward and collide with the outer wall of the limiting block 223;

[0050] In addition, a baffle groove 261 is provided at a position corresponding to the baffle 251 inside the front groove wall of the connecting groove 26. The groove depth of the baffle groove 261 is greater than the thickness of the baffle 251. When changing the rotation amplitude, the user can press the pressing column 256 to drive the baffle 251 to rotate and retract into the baffle groove 261 to prevent it from blocking the transfer of the pedal 22.

[0051] In addition, as Figures 6 - 10 shown, a pressing groove 211 adapted to the size of the abutting block 257 is provided in the middle of the rear side wall of the connecting groove 26. A rebound mechanism 258 is provided in the middle of the rear side wall of the pressing groove 211. The rebound mechanism 258 includes a fixed sleeve 2581. The rear end of the fixed sleeve 2581 is fixed to the rear side wall of the pressing groove 211. The rear end of the movable rod 2582 extends into the fixed sleeve 2581 and is slidably connected thereto. Both ends of the spring 2583 are fixed to the rear end face of the movable rod 2582 and the inner wall of the rear side of the fixed sleeve 2581 respectively;

[0052] Specifically, the abutting block 257 is a trapezoidal block with inclined surfaces on both the left and right side walls. The end face of the end of the abutting rod 255 that abuts is an inclined surface that fits the corresponding inclined surface of the corresponding abutting block 257. A clamping block is provided on the abutting end face of the abutting rod 255, and a clamping block groove for the clamping block to slide is provided on the corresponding inclined surface of the corresponding abutting block 257. A hydraulic cylinder 24 for changing the height of the rotary bending assembly 2 is provided in the middle of the bottom surface of the outer fixed frame 1. When it is necessary to transfer the pedal 22 to change the rotation amplitude, the abutting block 257 is driven to move backward by pressing the pressing column 256. At this time, the two abutting rods 255 slide outward in cooperation with the clamping block and the clamping block groove, and then the baffle 251 is driven to rotate and retract into the baffle groove 261 through the gear 2531 and the toothed plate 254.

[0053] In addition, as Figures 11 - 12 shown, fixed handles 4 are symmetrically provided on the top surface of the support plate 3 on both sides of the waist activity opening 31. The fixed handles 4 are arranged a little behind the waist activity opening 31. When in use, when the patient stands holding the waist activity opening 31, the waist can have a bending arc. The waist top support assembly 6 includes a waist support member 62, an electric push rod 61 installed in the support plate 3 and with its telescopic end fixed to the rear side wall of the waist support member 62, and a plurality of regularly distributed massage rollers 63 in the waist support member 62. The waist support member 62 is pushed inward by the electric push rod 61 to fit the waist. It should be noted that the side of the waist support member 62 that fits the patient's waist is made of a shrinkable material such as rubber or leather;

[0054] Specifically, the massage roller 63 is installed inside the lumbar support member 62 through the mounting bracket 69. A transmission rod 67 parallel to the massage roller 63 is provided at the bottom end of the mounting bracket 69. The transmission rod 67 is fixedly connected to the corresponding mounting bracket 69. The adjacent two transmission rods 67 are connected by a universal joint 68 for transmission. On the front inner wall of the lumbar support member 62 near the right end, there is a first mounting plate 65. A motor 64 is fixed on the left side of the first mounting plate 65. The output end of the motor 64 is coaxially and fixedly connected to the left end of the rightmost transmission rod 67. The mounting bracket 69 is connected to the front inner wall of the lumbar support member 62 through a plurality of second mounting plates 66. The bottom end of the mounting bracket 69 is rotatably connected to the second mounting plate 66. The motor 64 drives the transmission rod 67 to rotate repeatedly, thereby driving the mounting bracket 69 to rotate repeatedly, and further driving the massage roller 63 to rotate up and down repeatedly to massage and relax the patient's lumbar muscles. The rotation range does not exceed 180 degrees.

[0055] In addition, as Figure 13 shown, on the top surface of the support plate 3, chutes 32 are symmetrically arranged on the left and right in front of the waist activity opening 31. An activity handle assembly 7 is arranged in the chutes 32. The activity handle assembly 7 includes a slider 72 adapted to the chutes 32, an activity handle 71 located on the top surface of the slider 72, and a compression chamber 73 located between the slider 72 and the rear side wall of the chutes 32. When standing normally, the patient can hold the activity handle 71 and lean forward to bend the waist.

[0056] Furthermore, the compression chamber 73 includes a compression rod 731 and an air chamber 732. The front end of the compression rod 731 is fixedly connected to the rear side wall of the corresponding slider 72, and the rear end is slidably connected to the air chamber 732. A piston with the same inner diameter as the air chamber 732 is provided at the rear end of the compression rod 731. When the patient leans forward and pushes the activity handle 71 forward, it will drive the compression rod 731 to compress the air in the air chamber 732 to achieve a resistance effect. At the same time, when returning, the compressed air will slowly push the compression rod 731 to prevent the patient from being injured when bending the waist.

[0057] The working principle of a lumbar bending rehabilitation trainer of the present invention is specifically as follows:

[0058] During use, the upper body of the patient passes through the waist activity opening 31 and stands on the pedal 22. The height of the rotary bending assembly 2 is changed by the hydraulic cylinder 24 so that the patient's lumbar and dorsal regions can lean on the lumbar support assembly 6 and the abdomen faces the sponge cushion 5. Then, the electric push rod 61 is activated to push the lumbar support member 62 to move inward and fit against the waist. At the same time, the motor 64 is activated to drive the massage roller 63 to rotate up and down repeatedly to massage and relax the patient's lumbar muscles. After fitting, the pressing column 256 is pressed to drive the abutting block 257 to move backward. At this time, the two abutting rods 255 slide outward in cooperation with the block and the block groove, and then drive the baffle 251 to rotate and retract into the baffle groove 261 through the gear 2531 and the toothed plate 254. Then, the pedal 22 is adjusted so that the limit block 223 at its bottom enters the rotary groove 27. After the patient holds the fixed handle 4 firmly, the PLC controller can be used to control the cable 23 to drive the pedal 22 to slowly rotate along the rotary groove 27, thereby driving the lower body of the patient to rotate and bend for training;

[0059] On the other hand, when the patient is using it, they can also hold the movable handle 71 and push it forward, thereby driving the air in the compression cavity 732 to be compressed by the compression rod 731 to achieve a resistance effect for training the lumbar muscles.

[0060] The foregoing description of the specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention, as well as various different selections and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A lumbar curvature rehabilitation trainer, comprising an external fixing frame (1), characterized in that: In the middle of the bottom surface of the external fixator (1), there is a rotation and bending assembly (2). The rotation and bending assembly (2) includes a bottom plate (21), a pedal (22) located above the bottom plate (21) for a lumbar rehabilitation patient to stand on, and a number of cable ropes (23) that can drive the pedal (22) to move along the top surface of the bottom plate (21). On the top surface of the bottom plate (21), there are a number of rotation grooves (27) distributed in concentric circles. Connection grooves (26) are provided between adjacent two of the rotation grooves (27) and between the innermost rotation groove (27) and the center of the circle. A blocking plate structure (25) is provided in the front groove wall of the connection groove (26). In the middle of the bottom surface of the pedal (22), there is a limit block (223). The blocking plate structure (25) includes a pressing column (256) embedded in the groove wall of the connection groove (26), a resisting block (257) fixedly connected to the inner end of the pressing column (256), resisting rods (255) arranged on both sides of the resisting block (257), and baffles (251) respectively located at the inner and outer openings of the connection groove (26). A connection block (252) is fixed to the front end of the baffle (251). A rotating rod (253) penetrating up and down is provided at the rear end of the connection block (252). A gear (2531) is provided on the side wall of the rotating rod (253) near the top. The outer end of the resisting rod (255) is fixedly connected with a toothed plate (254) meshing with the gear (2531). In the middle between the left and right side walls of the external fixator (1), there is a support plate (3). In the middle of the support plate (3), there is a waist activity opening (31) for the patient to pass through. A sponge soft pad (5) and a waist propping assembly (6) are respectively provided on the front side wall and the rear side wall of the waist activity opening (31).

2. The lumbar curvature rehabilitation trainer according to claim 1, wherein: On the top surface of the pedal (22), there are spiral anti-slip lines (221). On the top surface of the pedal (22), there are a number of regularly distributed connection rings (222) corresponding to and connected with the cable ropes (23). The other ends of the cable ropes (23) pass through the side walls of the corresponding side of the external fixator (1) and are respectively connected with a driving rope winding device. A number of regularly distributed steel balls (2231) are embedded in the bottom surface and the lower half of the side wall of the limit block (223).

3. The lumbar curvature rehabilitation trainer according to claim 1, characterized in that: The size of the baffle (251) is adapted to the size of the connection groove (26). The bending radian of the baffle (251) corresponds to the bending radian of the corresponding rotation groove (27). And when the baffle (251) is closed, its outer surface is flush with the corresponding groove wall of the corresponding rotation groove (27). The outer end face of the pressing column (256) is flush with the rear groove wall of the connection groove (26).

4. The lumbar curvature rehabilitation trainer according to claim 1, characterized in that: A baffle groove (261) corresponding to the position of the baffle (251) is provided in the front groove wall of the connection groove (26). The depth of the baffle groove (261) is greater than the thickness of the baffle (251).

5. The lumbar curvature rehabilitation trainer according to claim 1, wherein: In the middle of the rear side wall of the connecting groove (26), there is a pressing groove (211) adapted to the size of the abutting block (257). In the middle of the rear side wall of the pressing groove (211), there is a rebounding mechanism (258). The rebounding mechanism (258) includes a fixed sleeve (2581), a movable rod (2582) with its rear end inserted into the fixed sleeve (2581) and slidably connected thereto, and a spring (2583) located within the fixed sleeve (2581).

6. The lumbar curvature rehabilitation trainer according to claim 1, wherein: The abutting block (257) is a trapezoidal block with inclined surfaces on both its left and right side walls. The end face of the end of the abutting rod (255) that abuts is an inclined surface that fits the corresponding inclined surface of the corresponding abutting block (257). And the end face of the abutting rod (255) where it abuts is provided with a clamping block, and on the corresponding inclined surface of the corresponding abutting block (257), there is a clamping block groove for the clamping block to slide. In the middle of the bottom surface of the outer fixed frame (1), there is a hydraulic cylinder (24) for changing the height of the rotary bending assembly (2).

7. The lumbar curvature rehabilitation trainer according to claim 1, characterized in that: On the top surface of the support plate (3), on both sides of the waist activity opening (31) symmetrically, there are fixed handles (4). The waist top support assembly (6) includes a waist support member (62), an electric push rod (61) installed within the support plate (3) and with its telescopic end fixedly connected to the rear side wall of the waist support member (62), and a number of regularly distributed massage rollers (63) within the waist support member (62).

8. The lumbar curvature rehabilitation trainer according to claim 7, wherein: The massage roller (63) is installed inside the waist support member (62) through a mounting frame (69). At the bottom end of the mounting frame (69), there is a transmission rod (67) parallel to the massage roller (63). Between adjacent two of the transmission rods (67), they are drivingly connected through a universal joint (68). On the front side inner wall of the waist support member (62) near the right end, there is a first mounting plate (65). On the left side of the first mounting plate (65), a motor (64) is fixed. The output end of the motor (64) is coaxially fixedly connected to the left end of the rightmost transmission rod (67). The mounting frame (69) is connected to the front side inner wall of the waist support member (62) through a number of second mounting plates (66).

9. The lumbar curvature rehabilitation trainer according to claim 1, characterized in that: On the top surface of the support plate (3), on both sides in front of the waist activity opening (31) symmetrically, there are sliding grooves (32). Inside the sliding grooves (32), there is a movable handle assembly (7). The movable handle assembly (7) includes a slider (72) adapted to the sliding groove (32), a movable handle (71) located on the top surface of the slider (72), and a compression chamber (73) located between the slider (72) and the rear side wall of the sliding groove (32).

10. A lumbar curvature rehabilitation trainer according to claim 9, characterized in that: The compression chamber (73) includes a compression rod (731) and an air chamber (732). The front end of the compression rod (731) is fixedly connected to the rear side wall of the corresponding slider (72), and the rear end is slidably connected to the air chamber (732). At the rear end of the compression rod (731), there is a piston with the same inner diameter as the air chamber (732).

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