Auxiliary rehabilitation exercise device for bedridden hemiplegic patient

Abstract

The invention belongs to the technical field of rehabilitation instruments, and particularly relates to an auxiliary rehabilitation exercise device for a bedridden hemiplegic patient, the auxiliary rehabilitation exercise device comprises a bottom plate, a middle plate and two side plates, the middle plate and the two side plates are hinged to the front end of the bottom plate, and the two side plates are located on the left side and the right side of the middle plate respectively; the front end of the bottom plate is provided with a longitudinally-arranged limiting piece, and the opposite sides of the two side plates are each provided with a locking groove. A connecting mechanism is arranged in the middle plate, the connecting mechanism comprises a rack, a gear, a synchronous belt and a locking piece, the rack is transversely and slidably connected to the middle plate in the left-right direction and corresponds to the locking groove in position, and the gear is rotationally connected to the middle plate and engaged with the rack. Training modes can be adjusted according to illness conditions of the patients to adapt to different types of hemiplegic patients, the lower limb functions of the hemiplegic patients can be effectively improved by assisting the patients in leg lifting training through the device, and the ability of the hemiplegic patients to recover independent walking early is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of rehabilitation equipment, and in particular relates to an auxiliary rehabilitation exercise device for bedridden hemiplegic patients. Background Art

[0002] With the acceleration of the aging of the global population, the number of bedridden hemiplegic patients is gradually increasing. These patients usually suffer from unilateral limb dysfunction due to stroke or other neurological diseases, which seriously affects their daily life and independent activities. Hemiplegia not only poses challenges to the patient's physical health, but also has a negative impact on their mental state and social interaction. Therefore, rehabilitation treatment for hemiplegic patients is particularly important, which not only helps to promote functional recovery, but also significantly improves the patient's quality of life.

[0003] Among many rehabilitation trainings, leg lifting exercise is a basic and key training method. This exercise can effectively prevent muscle atrophy and deep vein thrombosis by strengthening lower limb muscle strength, improving joint mobility, and promoting blood circulation. Studies have shown that regular leg lifting training can effectively improve the lower limb function of hemiplegic patients and promote their ability to recover independent walking as soon as possible. In order to assist patients in lifting exercises, we proposed an auxiliary rehabilitation exercise device for bedridden hemiplegic patients. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present invention discloses an auxiliary rehabilitation exercise device for bedridden hemiplegic patients.

[0005] To achieve the above object, a technical solution adopted by the present invention is:

[0006] An auxiliary rehabilitation exercise device for bedridden hemiplegic patients, comprising a bottom plate, a middle plate and side plates, wherein the side plates have two, the middle plate and the two side plates are hinged to the front end of the bottom plate, and the two side plates are respectively located on the left and right sides of the middle plate;

[0007] The front end of the bottom plate is provided with a longitudinally arranged limit piece, and opposite sides of the two side plates are provided with locking grooves;

[0008] The middle plate is provided with a connecting mechanism, the connecting mechanism includes a rack, a gear, a synchronous belt and a locking member, the rack is slidably connected to the middle plate in a horizontal direction and corresponds to the position of the locking groove, the gear is rotatably connected to the middle plate and meshes with the rack, the locking member is rotatably connected to the middle plate and is located at the rear side of the gear, an annular groove is provided on the circumference of the locking member, a plurality of meshing teeth are provided in an annular array on the inner wall of the annular groove, the synchronous belt meshes with the meshing teeth and the gear respectively, and a first locking groove, a second locking groove and a third locking groove are provided on the outer circumference of the locking member and are parallel to the rotation axis of the locking member;

[0009] When the bottom plate is flush with the middle plate, the peripheral surface of the locking member is in a vertical state parallel to the front end surface of the limiting member;

[0010] When the first locking groove is aligned with the limiting member, the left end of the rack will extend to the left from the left end of the middle plate and the right end of the rack will not extend to the right from the right end of the middle plate. In this state, the middle plate will flip upward relative to the bottom plate to cause the first locking groove to be sleeved on the outside of the limiting member to limit the self-rotation of the locking member.

[0011] When the second locking groove is aligned with the limiting member, the left end of the rack will extend to the left of the left end of the middle plate, and the right end of the rack will extend to the right of the right end of the middle plate. In this state, the middle plate will flip upward relative to the bottom plate to cause the second locking groove to be sleeved on the outside of the limiting member to limit the self-rotation of the locking member;

[0012] When the third locking groove is aligned with the limiting member, the right end of the rack will extend to the right beyond the right end of the middle plate and the left end of the rack will not extend to the left beyond the left end of the middle plate. In this state, the middle plate will flip upward relative to the bottom plate, causing the third locking groove to be sleeved on the outside of the limiting member to limit the self-rotation of the locking member.

[0013] Furthermore, the middle plate has an assembly groove inside, and the rack, the gear, the synchronous belt and the locking member are all arranged in the assembly groove. The left and right ends of the middle plate are provided with rack slide grooves connected to the assembly groove for the rack to pass through, and the rear end of the middle plate is provided with a limit member yielding groove opposite to the limit member for the middle plate to extend into.

[0014] Furthermore, the synchronous belt is meshed with the middle part of the gear for transmission, and a synchronous belt yielding groove matching the synchronous belt is provided in the middle part of the rack.

[0015] Furthermore, the gear and the locking member are rotationally connected to the middle plate via a first rotating shaft and a second rotating shaft respectively.

[0016] Furthermore, a lever is fixedly connected to the upper end of the rack and penetrates upwardly through the middle plate, and the middle plate is provided with a lever sliding groove matching the lever.

[0017] Furthermore, a flexible rod sleeve is provided on the outer side of the lever.

[0018] Furthermore, the middle plate and the two side plates are hinged to the front end of the bottom plate through a hinge assembly.

[0019] Further, the hinge assembly includes a side connection seat, an intermediate connection member and an articulation shaft, the side connection seat and the articulation shaft each have two, a first shaft hole is opened on one side of the side connection seat, the first shaft hole does not penetrate the side connection seat, the intermediate connection member includes a connection plate and an intermediate connection seat, the intermediate connection seat has two, the two intermediate connection seats are fixedly connected to the left and right ends of the connection plate at intervals, and the two intermediate connection seats are each opened with a second shaft hole set through;

[0020] The left and right sides of the middle plate are each provided with a third axial hole, the third axial hole is a blind hole, and the two side plates are each provided with a fourth axial hole, the fourth axial hole is a through hole;

[0021] The two side connecting seats are respectively fixed to the left and right sides of the front end of the base plate, the first axial holes of the two side connecting seats are arranged opposite to each other, the intermediate connecting piece is fixed to the middle part of the front end of the base plate, the two side plates are respectively assembled between the side connecting seats and the intermediate connecting seats on the same side, the intermediate plate is assembled between the two intermediate connecting seats, and the two hinge shafts respectively pass through the second axial hole and the fourth axial hole on the same side, and the two ends extend into the first axial hole and the third axial hole on the same side.

[0022] Furthermore, the limiting member is arranged at the middle part of the front end of the connecting plate.

[0023] Furthermore, a rope buckle is provided at the front of the middle plate.

[0024] The present invention discloses an auxiliary rehabilitation exercise device for bedridden hemiplegic patients. The auxiliary rehabilitation exercise device can assist patients in performing leg lifting training, and the training mode can be adjusted according to the patient's condition to adapt to different types of hemiplegic patients. Assisting patients in performing leg lifting training through the device can effectively improve the lower limb function of hemiplegic patients and promote their early recovery of the ability to walk independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure enlarged at B in the middle;

[0029] Figure 4 for Figure 1 A schematic diagram of the structure enlarged at C in the middle;

[0030] Figure 5 It is a schematic cross-sectional structure diagram of an embodiment of the present invention;

[0031] Figure 6 for Figure 5 A schematic diagram of the structure at D in the middle is enlarged;

[0032] Figure 7 for Figure 5 A schematic diagram of the structure enlarged at E in the middle;

[0033] Figure 8 for Figure 5 A schematic diagram of the structure enlarged at F in the middle;

[0034] Fig. 9 A schematic diagram of the meshing of a rack and a gear in one embodiment of the present invention;

[0035] Fig.10 This is a schematic structural diagram of an intermediate connecting member in one embodiment of the present invention;

[0036] Fig.11 This is a schematic structural diagram of a side connecting seat in one embodiment of the present invention;

[0037] Fig.12 Schematic diagram of the structure of a locking member in one embodiment of the present invention.

[0038] The meanings of the symbols in the accompanying drawings are:

[0039] Bottom plate 1, limiting member 111, middle plate 2, rack 21, synchronous belt giving groove 211, lever 212, flexible rod sleeve 213, gear 22, first rotating shaft 221, meshing tooth 222, synchronous belt 23, locking member 24, annular groove 241, first locking groove 242, second locking groove 243, third locking groove 244, second rotating shaft 245, assembly groove 25, rack slide groove 26, limiting member giving groove 27, third shaft hole 28, lever slide groove 29, side plate 3, locking groove 31, fourth shaft hole 32, rope buckle 4, side connecting seat 51, first shaft hole 511, middle connecting member 52, connecting plate 521, middle connecting seat 522, second shaft hole 523, hinge shaft 53. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] Reference Figure 1-Figure 12 As shown, the auxiliary rehabilitation exercise device for bedridden hemiplegic patients in this embodiment includes a base plate 1, a middle plate 2 and side plates 3. The side plates 3 have two, and the middle plate 2 and the two side plates 3 are hinged to the front end of the base plate 1. The two side plates 3 are respectively located on the left and right sides of the middle plate 2.

[0042] Furthermore, the middle plate 2 and the two side plates 3 are hinged to the front end of the bottom plate 1 through a hinge assembly 5 .

[0043] Specifically, the hinge assembly 5 includes a side connection seat 51, an intermediate connection member 52 and an articulation shaft 53. The side connection seat 51 and the articulation shaft 53 each have two. A first shaft hole 511 is opened on one side of the side connection seat 51, and the first shaft hole 511 does not penetrate the side connection seat 51. The intermediate connection member 52 includes a connection plate 521 and an intermediate connection seat 522. The intermediate connection seat 522 has two. The two intermediate connection seats 522 are fixedly connected to the left and right ends of the connection plate 521 at intervals. The two intermediate connection seats 522 each have a second shaft hole 523 that penetrates through.

[0044] The left and right sides of the middle plate 2 are both provided with third shaft holes 28, which are blind holes. The two side plates 3 are both provided with fourth shaft holes 32, which are through holes.

[0045] The two side connecting seats 51 are respectively fixed to the left and right sides of the front end of the base plate 1, the first axial holes 511 of the two side connecting seats 51 are arranged opposite to each other, the middle connecting piece 52 is fixed to the middle part of the front end of the base plate 1, the two side plates 3 are respectively assembled between the side connecting seats 51 and the middle connecting seats 522 on the same side, the middle plate 2 is assembled between the two middle connecting seats 522, and the two hinge shafts 53 respectively pass through the second axial hole 523 and the fourth axial hole 32 on the same side, and the two ends extend into the first axial hole 511 and the third axial hole 28 on the same side.

[0046] By means of the arrangement of the hinge assembly 5 , the middle plate 2 and the two side plates 3 can be hinged to the front end of the bottom plate 1 .

[0047] In this embodiment, a longitudinally arranged stopper 111 is provided at the front end of the bottom plate 1, and the stopper 111 is specifically arranged at the middle of the front end of the connecting plate 521, and this arrangement is convenient for installing the stopper 111. Locking grooves 31 are provided on opposite sides of the two side plates 3.

[0048] In this embodiment, a connecting mechanism is provided in the middle plate 2, and the connecting mechanism includes a rack 21, a gear 22, a synchronous belt 23 and a locking member 24. The rack 21 is connected to the middle plate 2 in a transverse sliding manner in the left and right directions and corresponds to the position of the locking groove 31. The gear 22 is rotatably connected to the middle plate 2 and meshes with the rack 21. The locking member 24 is rotatably connected to the middle plate 2 and is located on the rear side of the gear 22. An annular groove 241 is provided on the circumference of the locking member 24, and a plurality of meshing teeth 222 are provided in a circular array on the inner wall of the annular groove 241. The synchronous belt 23 meshes with the meshing teeth 222 and the gear 22 respectively. The outer periphery of the locking member 24 is provided with a first locking groove 242, a second locking groove 243 and a third locking groove 244 parallel to the rotation axis of the locking member 24.

[0049] Furthermore, in this embodiment, the middle plate 2 has an assembly groove 25 inside, and the rack 21, the gear 22, the synchronous belt 23 and the locking member 24 are all arranged in the assembly groove 25. The left and right ends of the middle plate 2 are provided with rack slide grooves 26 that are connected to the assembly groove 25 for the rack 21 to pass through, and the rear end of the middle plate 2 is provided with a limit member yielding groove 27 opposite to the limit member 111 for the middle plate 2 to extend into.

[0050] Further, the synchronous belt 23 is meshed with the middle part of the gear 22 for transmission, and the middle part of the rack 21 is provided with a synchronous belt giving way groove 211 that matches the synchronous belt 23. Such meshing can make the gear 22 stably stressed to improve the transmission stability.

[0051] Furthermore, in this embodiment, the gear 22 and the locking member 24 are rotationally connected to the middle plate 2 via the first rotating shaft 221 and the second rotating shaft 245 , respectively.

[0052] When the device is used, it needs to be placed on a flat surface, such as on a bed in a ward. When the device is placed on the bed, the middle plate 2 and the two side plates 3 will remain flush with the bottom plate 1. In this state, the peripheral surface of the locking member 24 is in a vertical state parallel to the front end surface of the limiting member 111. In this state, the locking grooves on the locking member 24 will not be arranged on the outside of the limiting member 111, so the rotation of the locking member 24 will not be restricted.

[0053] In actual use, different bedridden hemiplegic patients have different training needs. Usually, there are three types of training needs: one is to perform leg-lifting training on the left leg only, the second is to perform leg-lifting training on the right leg only, and the third is to perform leg-lifting training on both legs at the same time. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients provided by the present invention can be applied to the above three training modes, and the specific training mode can be switched by adjusting operation.

[0054] When adjusting the training mode, the control rack 21 can be slid to the left or right. When the control rack 21 is only inserted into the locking groove 31 of the left side panel 3, the left side panel 3 is fixed together with the middle panel 2. When the middle panel 2 is driven to flip upward, the middle panel 2 will drive the left side panel 3 to rotate upward. Similarly, when the rack 21 is only inserted into the locking groove 31 of the right side panel 3, when the middle panel 2 flips upward, the middle panel 2 will drive the right side panel 3 to rotate upward. When the left and right ends of the rack 21 are simultaneously inserted into the locking grooves 31 of the left and right side panels 3, the two side panels 3 form a whole with the middle panel 2. At this time, when the middle panel 2 flips upward, it will drive the two side panels 3 to flip upward synchronously.

[0055] It is worth mentioning that in this embodiment, a lever 212 is fixedly connected to the upper end of the rack 21 and passes through the middle plate 2 upwards. The middle plate 2 is provided with a lever slot 29 that matches the lever 212. When the user moves the lever 212 left and right, the rack 21 can be controlled to slide left and right, so that the training mode can be adjusted. In addition, a flexible rod sleeve 213 is provided on the outer side of the lever 212, and the flexible rod sleeve 213 can improve the grip feel of the lever 212.

[0056] When performing the above adjustment operation, the sliding of the rack 21 will drive the gear 22 meshing with it to rotate. When the gear 22 rotates, it will drive the locking member 24 to rotate through the synchronous belt 23 and the meshing teeth 222. When the locking member 24 rotates, the various locking grooves set therein will switch positions.

[0057] In this embodiment, when the first locking groove 242 rotates with the locking member 24 to align with the limiting member 111, the left end of the rack 21 will extend to the left from the left end of the middle plate 2 and the right end of the rack 21 will not extend to the right from the right end of the middle plate 2. In this state, if both side plates 3 and the middle plate 2 are in a flat state, the rack 21 will be inserted into the left locking groove 31 to keep the left side plate 3 connected to the middle plate 2. In this state, when the middle plate 2 is driven to flip upward, the middle plate 2 will only drive the left side plate 3 to flip upward together. It can be seen that this state is suitable for leg lifting training for only the left leg. It is worth mentioning that in this state, the middle plate 2 flips upward relative to the bottom plate 1 so that the first locking groove 242 is sleeved on the outside of the limiter 111, so that the limiter 111 will cooperate with the first locking groove 242 to limit the rotation of the locking member 24. After the locking member 24 is restricted from rotating, the gear 22 connected to it through the synchronous belt 23 will be synchronously restricted from rotating, so that the rack 21 meshing with the gear 22 will not be able to slide left and right, and the connection between the middle plate 2 and the left side plate 3 will be locked, so that the left side plate 3 can be prevented from being disconnected from the middle plate 2 when the patient is performing rehabilitation training with the middle plate 2 flipping, so as to avoid the patient suddenly losing support when performing left leg lifting training, thereby ensuring training safety. When the patient stops training, since the middle plate 2 will be reset to be flush with the bottom plate 1, the sleeve between the first locking groove 242 and the limiter 111 will be released, so that the rack 21 can contact the restriction of sliding left and right, and the training mode of the device can be adjusted at this time.

[0058] In this embodiment, when the second locking groove 243 rotates with the locking member 24 to align with the limiting member 111, the left end of the rack 21 will extend to the left of the left end of the middle plate 2, and the right end of the rack 21 will extend to the right of the right end of the middle plate 2. In this state, if the side plates 3 and the middle plate 2 are both in a flat state, the two ends of the rack 21 will be inserted into the locking grooves 31 on the left and right sides respectively, so that the left and right side plates 3 are connected to the middle plate 2. In this state, when the middle plate 2 is driven to flip upward, the middle plate 2 will drive the left and right side plates 3 to flip upward together. It can be seen that this state is suitable for performing leg lifting training for both legs at the same time. It is worth mentioning that in this state, the middle plate 2 flips upward relative to the bottom plate 1 so that the second locking groove 243 is sleeved on the outside of the limiter 111, so that the limiter 111 will cooperate with the second locking groove 243 to limit the rotation of the locking member 24. After the locking member 24 is restricted from rotating, the gear 22 connected to it through the synchronous belt 23 will be synchronously restricted from rotating, so that the rack 21 meshed with the gear 22 will not be able to slide left and right, and the connection between the middle plate 2 and the left and right side plates 3 will be locked, so that the left and right side plates 3 can be prevented from being disconnected from the middle plate 2 when the patient is performing rehabilitation training with the middle plate 2 flipping, so as to avoid the patient suddenly losing one of his legs when performing double leg lifting training, thereby ensuring training safety. When the patient stops training, since the middle plate 2 will be reset to be flush with the bottom plate 1, the sleeve between the second locking groove 243 and the limiter 111 will be released, so that the rack 21 can contact the restriction of sliding left and right, and the training mode of the device can be adjusted at this time.

[0059] In this embodiment, when the third locking groove 244 rotates with the locking member 24 to align with the limiting member 111, the right end of the rack 21 will extend rightward from the right end of the middle plate 2 and the left end of the rack 21 will not extend leftward from the left end of the middle plate 2. In this state, if both side plates 3 and the middle plate 2 are in a flat state, the rack 21 will be inserted into the locking groove 31 on the right side to keep the right side plate 3 connected to the middle plate 2. In this state, when the middle plate 2 is driven to flip upward, the middle plate 2 will only drive the right side plate 3 to flip upward together. It can be seen that this state is suitable for leg lifting training for only the right leg. It is worth mentioning that in this state, the middle plate 2 flips upward relative to the bottom plate 1 so that the third locking groove 244 is sleeved on the outside of the limiter 111, so that the limiter 111 will cooperate with the third locking groove 244 to limit the rotation of the locking member 24. After the locking member 24 is restricted from rotating, the gear 22 connected to it through the synchronous belt 23 will be synchronously restricted from rotating, so that the rack 21 meshing with the gear 22 will not be able to slide left and right, and the connection between the middle plate 2 and the right side plate 3 will be locked, so that the right side plate 3 can be prevented from being disconnected from the middle plate 2 when the patient is performing rehabilitation training with the middle plate 2 flipping, so as to avoid the patient suddenly losing support when performing right leg lifting training, thereby ensuring training safety. When the patient stops training, since the middle plate 2 will be reset to be flush with the bottom plate 1, the sleeve between the third locking groove 244 and the limiter 111 will be released, so that the rack 21 can contact the restriction of sliding left and right, and the training mode of the device can be adjusted at this time.

[0060] It should also be noted that when the locking groove of the locking member 24 is not aligned with the limiting member 111, the middle plate 2 flips upward so that the side of the locking member 24 abuts against the limiting member 111, that is, the middle plate 2 is restricted from turning upward. On the contrary, when the locking groove is aligned with the limiting member 111, the middle plate 2 can turn upward smoothly. In this way, when the user adjusts the training mode, he can try to lift the middle plate 2 to determine whether the training mode is adjusted in place, so that the user can grasp the adjustment state. In addition, this design can avoid an unstable connection between the middle plate 2 and the side plate 3, that is, it can ensure that the rack 21 is plugged in place, thereby further improving the safety of the device.

[0061] Before use, the device is placed flat on the operating table, and then the middle plate 2 is connected to a device that can drive it to rotate upward. It can be a pushing mechanism located on the lower side of the middle plate 2, which drives the middle plate 2 to rotate by hydraulic, pneumatic or electric means, or it can be a pulling and releasing mechanism located on the upper side of the middle plate 2, such as a winch.

[0062] This embodiment uses a winch as an example to introduce the use process of the auxiliary rehabilitation exercise device. The winch is fixed at a high place, and then the pull rope of the winch is fixed to the front end of the middle plate 2. In this embodiment, a rope buckle 4 is provided at the front of the middle plate 2 to connect with the pull rope of the winch. During specific rehabilitation training, the patient lies flat on the device with his face facing up, his waist and hips should be located on the bottom plate 1, and his legs are placed on the two side plates 3 respectively. Then, the training mode of the device is adjusted according to the patient's condition. After the adjustment is completed, the winch is started to pull up the middle plate 2 through the pull rope. In this process, the middle plate 2 will drive the corresponding side plate 3 to rotate, and the patient's legs on the corresponding side plate 3 will be lifted together. When lowering the legs, the winch is controlled to release the pull rope. Under the action of gravity, the middle plate 2 and the side plate 3 connected thereto will be synchronously flipped downward to reset, and the patient's lifted legs will be synchronously lowered. In this cycle, the patient's legs can be lifted up to improve joint mobility, promote blood circulation, and prevent muscle atrophy and the formation of deep vein thrombosis. Such leg lifting training for patients can effectively improve the lower limb function of hemiplegic patients and promote their early recovery of the ability to walk independently.

[0063] In summary, the present invention discloses an auxiliary rehabilitation exercise device for bedridden hemiplegic patients. The auxiliary rehabilitation exercise device can assist patients in performing leg lifting training, and the training mode can be adjusted according to the patient's condition to adapt to different types of hemiplegic patients. Assisting patients in leg lifting training through the device can effectively improve the lower limb function of hemiplegic patients and promote their early recovery of the ability to walk independently.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An auxiliary rehabilitation exercise device for bedridden hemiplegic patients, characterized by: It includes a bottom plate, a middle plate and a side plate, wherein the side plates have two, the middle plate and the two side plates are hinged to the front end of the bottom plate, and the two side plates are respectively located on the left and right sides of the middle plate; The front end of the bottom plate is provided with a longitudinally arranged limit piece, and opposite sides of the two side plates are provided with locking grooves; The middle plate is provided with a connecting mechanism, the connecting mechanism includes a rack, a gear, a synchronous belt and a locking member, the rack is slidably connected to the middle plate in a horizontal direction and corresponds to the position of the locking groove, the gear is rotatably connected to the middle plate and meshes with the rack, the locking member is rotatably connected to the middle plate and is located at the rear side of the gear, an annular groove is provided on the circumference of the locking member, a plurality of meshing teeth are provided in an annular array on the inner wall of the annular groove, the synchronous belt meshes with the meshing teeth and the gear respectively, and a first locking groove, a second locking groove and a third locking groove are provided on the outer circumference of the locking member and are parallel to the rotation axis of the locking member; When the bottom plate is flush with the middle plate, the peripheral surface of the locking member is in a vertical state parallel to the front end surface of the limiting member; When the first locking groove is aligned with the limiting member, the left end of the rack will extend to the left from the left end of the middle plate and the right end of the rack will not extend to the right from the right end of the middle plate. In this state, the middle plate will flip upward relative to the bottom plate to cause the first locking groove to be sleeved on the outside of the limiting member to limit the self-rotation of the locking member. When the second locking groove is aligned with the limiting member, the left end of the rack will extend to the left of the left end of the middle plate, and the right end of the rack will extend to the right of the right end of the middle plate. In this state, the middle plate will flip upward relative to the bottom plate to cause the second locking groove to be sleeved on the outside of the limiting member to limit the self-rotation of the locking member; When the third locking groove is aligned with the limiting member, the right end of the rack will extend to the right beyond the right end of the middle plate and the left end of the rack will not extend to the left beyond the left end of the middle plate. In this state, the middle plate will flip upward relative to the bottom plate, causing the third locking groove to be sleeved on the outside of the limiting member to limit the self-rotation of the locking member.

2. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 1, characterized in that: The middle plate has an assembly groove inside, and the rack, the gear, the synchronous belt and the locking member are all arranged in the assembly groove. The left and right ends of the middle plate are provided with rack slide grooves connected with the assembly groove for the rack to pass through, and the rear end of the middle plate is provided with a limit member yielding groove opposite to the limit member for the middle plate to extend into.

3. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 2, characterized in that: The synchronous belt is meshed with the middle part of the gear for transmission, and the middle part of the rack is provided with a synchronous belt yielding groove matching the synchronous belt.

4. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 2, characterized in that: The gear and the locking member are rotationally connected to the middle plate via a first rotating shaft and a second rotating shaft, respectively.

5. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 2, characterized in that: The upper end of the rack is fixedly connected with a shifting rod which passes through the middle plate upwards, and the middle plate is provided with a shifting rod sliding groove which matches the shifting rod.

6. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 5, characterized in that: A flexible rod sleeve is sleeved on the outer side of the shift rod.

7. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 2, characterized in that: The middle plate and the two side plates are hinged to the front end of the bottom plate through hinge components.

8. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 7, characterized in that: The hinge assembly includes a side connection seat, an intermediate connection member and an articulation shaft, the side connection seat and the articulation shaft each have two, a first shaft hole is opened on one side of the side connection seat, the first shaft hole does not penetrate the side connection seat, the intermediate connection member includes a connection plate and an intermediate connection seat, the intermediate connection seat has two, the two intermediate connection seats are fixedly connected to the left and right ends of the connection plate at intervals, and the two intermediate connection seats are each opened with a second shaft hole set through; The left and right sides of the middle plate are each provided with a third axial hole, the third axial hole is a blind hole, and the two side plates are each provided with a fourth axial hole, the fourth axial hole is a through hole; The two side connecting seats are respectively fixed to the left and right sides of the front end of the base plate, the first axial holes of the two side connecting seats are arranged opposite to each other, the intermediate connecting piece is fixed to the middle part of the front end of the base plate, the two side plates are respectively assembled between the side connecting seats and the intermediate connecting seats on the same side, the intermediate plate is assembled between the two intermediate connecting seats, and the two hinge shafts respectively pass through the second axial hole and the fourth axial hole on the same side, and the two ends extend into the first axial hole and the third axial hole on the same side.

9. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 8, characterized in that: The limiting member is arranged at the middle part of the front end of the connecting plate.

10. The auxiliary rehabilitation exercise device for bedridden hemiplegic patients according to claim 1, characterized in that: A rope buckle is arranged at the front of the middle plate.

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