A patient bed mobility aid

Abstract

This invention provides a bedside mobility aid for patients, comprising a housing with turntables rotatably mounted at both ends. Each turntable has a strip-shaped groove, and a slider is slidably mounted within the groove along a direction perpendicular to the turntable's axis. A pedal is mounted on the slider. An adjustment mechanism, located within the housing, drives the slider to slide within the strip-shaped groove. A drive mechanism, also located within the housing, drives the two turntables to rotate. Based on the patient's postoperative rehabilitation progress, the position of the slider within the strip-shaped groove can be adjusted via the adjustment mechanism, thereby changing the distance between the pedal and the axis of the turntable, and adjusting the range of flexion and extension of the patient's legs.

Description

Technical Field

[0001] This invention relates to the field of medical rehabilitation equipment technology, specifically to a patient bed mobility aid. Background Technology

[0002] In hematology nursing, assisting patients with lower limb rehabilitation training is a crucial step in promoting recovery and preventing complications. Patients who are bedridden for extended periods are highly susceptible to serious problems such as pressure injuries; therefore, timely and effective lower limb rehabilitation training is essential.

[0003] Currently, there are some lower limb rehabilitation devices on the market for bedridden patients, such as the "A Bedridden Lower Limb Rehabilitation Device" with publication number CN113317959A. This device includes a base frame, with a main unit fixed to the center of the upper surface of the base frame. An operation panel is located on the top of the main unit, and a motor-driven turntable is embedded in the front end. The turntable extends from both sides of the main unit, and rotating shafts are eccentrically fixed to both sides of the turntable. A pedal with a front end that can swing axially along the rotating shaft is movably connected to the rotating shaft. The patient can place their feet on the pedal, and the motor drives the turntable to rotate, causing the pedal to swing, thus achieving simple lower limb movements.

[0004] However, existing technologies of this kind have significant shortcomings in practical applications. The swing amplitude of the pedal is usually fixed and cannot be flexibly adjusted according to the different stages of postoperative rehabilitation. In the rehabilitation process after thoracic surgery, the recovery of lower limb strength and the improvement of joint mobility are gradual processes. Initially, the patient's lower limbs are relatively weak and require small-amplitude activities to gradually adapt. As the rehabilitation progresses, the range of motion needs to be gradually increased to further promote muscle strength recovery and joint function improvement. Therefore, we provide a postoperative rehabilitation nursing device that flexibly adjusts the leg flexion and extension amplitude according to the patient's rehabilitation progress. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a bedside mobility aid for patients, which solves the technical problem that existing devices cannot be flexibly adjusted according to different postoperative recovery stages of patients.

[0006] The technical solution adopted in this invention is a patient bed mobility aid, comprising: The housing has turntables rotatably mounted at both ends. Each turntable has a strip-shaped through groove, and a slider is slidably mounted in the strip-shaped through groove along the direction perpendicular to the axis of the turntable. Each slider is equipped with a pedal. The adjustment mechanism, located inside the housing, is used to drive the slider to slide within the strip groove; The drive mechanism, located inside the housing, is used to drive the two turntables to rotate.

[0007] In a preferred embodiment, the adjusting mechanism includes a rotating shaft, a sliding sleeve, a first hinge rod, and a push-pull assembly. The rotating shaft is rotatably mounted inside the housing, and the driving mechanism is connected to the rotating shaft. The sliding sleeve slides on the outside of the rotating shaft. One end of the first hinge rod is hinged to the outside of the sliding sleeve, and the other end is hinged to the slider. The push-pull assembly is used to push the sliding sleeve to move along the axis of the rotating shaft.

[0008] In a preferred embodiment, the push-pull assembly includes a telescopic member, a rotating ring, and a second hinge rod. The telescopic member is installed inside the housing. The rotating ring is sleeved on the outside of the rotating shaft and rotatably connected to the sliding sleeve. One end of the second hinge rod is hinged to the telescopic end of the telescopic member, and the other end is hinged to the outside of the rotating ring.

[0009] In a preferred embodiment, the pedal is connected to the slider via a connecting shaft; The pedal includes a fixed frame and two sliding frames. The fixed frame is connected to a slider. The two sliding frames slide at the front and rear ends of the fixed frame, respectively. The upper and lower sides of the two sliding frames are connected by several mutually hinged support plates. Several elastic strips are installed between the upper and lower sides of the two sliding frames, and the elastic strips are in contact with the inner side of the support plates. The fixed frame is provided with a control component for driving the two sliding frames to slide. The pedal includes a first state and a second state. When the pedal is in the first state, the two sliding frames are far apart, the elastic strips are straight, and the pedal as a whole is rectangular. When the pedal is in the second state, the two sliding frames are close to each other, several elastic strips are in an arc shape, and the pedal as a whole is cylindrical.

[0010] In a preferred embodiment, massage blocks are mounted on the outer sides of several of the support plates.

[0011] In a preferred embodiment, the control component includes a movable block, two third hinge rods, a sliding shaft, and a guide rail. The movable block is slidably mounted in the middle of the fixed frame. The two third hinge rods are respectively hinged to both sides of the movable block, and the other ends of the two third hinge rods are respectively hinged to the two sliding blocks. A connecting groove is provided in the middle of the connecting shaft, and the sliding shaft is located in the connecting groove. One end of the sliding shaft is connected to the movable block. The guide rail is mounted on the inner side of the turntable, and a guide block located in the guide rail is fixed to the other end of the sliding shaft. The length of the guide rail is equal to the length of the strip groove. The guide rail is composed of a linear guide rail and an inclined guide rail. The linear guide rail is located on the side away from the turntable axis, and the end of the inclined guide rail faces the middle of the housing.

[0012] In a preferred embodiment, the connecting shaft is rotatably mounted to the slider; The sliding shaft consists of two shafts that are rotatably mounted to each other. A first connecting piece is installed at the end of the shaft that is connected to the movable block, and a second connecting piece that matches the first connecting piece is installed on the slider.

[0013] As can be seen from the above technical solution, the beneficial technical effects of the present invention are as follows: 1. In this invention, bedridden patients can place their feet on two pedals, and then activate the drive mechanism to rotate the turntable, thereby causing the pedals to rotate around the turntable. The patient's legs follow the movement of the pedals, thus passively completing reciprocating rehabilitation training of knee flexion and extension. This avoids pressure injuries caused by prolonged bed rest after surgery. The position of the slider in the strip groove can be adjusted by the adjustment mechanism, thereby changing the distance between the axis of the pedal and the turntable and adjusting the range of flexion and extension of the patient's legs.

[0014] 2. The pedal of the present invention has a first state and a second state. In the first state, it is rectangular and can be used by patients for leg movement training. In the second state, it is cylindrical and can massage the patient's thigh or calf to meet the patient's relaxation needs during the rehabilitation process. It takes into account both leg movement training and local muscle relaxation functions, and does not require an additional massage device. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the structure of a patient bed mobility aid according to the present invention; Figure 2 This is a schematic cross-sectional view of a patient bed mobility aid according to the present invention. Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 2 Enlarged structural diagram at point B; Figure 5 for Figure 2 Enlarged structural diagram at point C; Figure 6 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point D; Figure 8 This is a cross-sectional structural diagram of the pedal of the present invention.

[0017] Figure label: 1. Housing, 11. Turntable, 12. Strip groove, 13. Slider, 14. Pedal, 141. Fixing frame, 142. Sliding frame, 143. Support plate, 144. Elastic strip, 2. Rotating shaft, 21. Sliding sleeve, 22. First hinge rod, 23. Telescopic component, 24. Rotating ring, 25. Second hinge rod, 3. Moving block, 31. Third hinge rod, 32. Sliding shaft, 321. Shaft body, 322. First connecting plate, 323. Second connecting plate, 33. Guide rail, 331. Linear guide rail, 332. Inclined guide rail; Mounting component 101, linear groove 201, movable block 202, gear 203, servo motor 204, transmission gear 205. Detailed Implementation

[0018] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0020] Example: like Figure 1-8 As shown, this embodiment provides a patient bed mobility aid, including: The housing 1 has a turntable 11 rotatably mounted at both ends. The turntable 11 has a strip-shaped through groove 12. A slider 13 is slidably mounted in the strip-shaped through groove 12 along the direction perpendicular to the axis of the turntable 11. A pedal 14 is mounted on the slider 13. An adjustment mechanism, located inside the housing 1, is used to drive the slider 13 to slide within the strip groove 12; The drive mechanism, located inside the housing 1, is used to drive the two turntables 11 to rotate.

[0021] The shell 1 is a cylindrical shell, the turntable 11 is installed at both ends of the cylindrical shell, and the side wall of the shell 1 is equipped with an installation part 101 that connects to the foot of the bed. Preferably, the installation part 101 is an inverted L-shaped hanging plate, which can be hung on the foot of the bed to install the shell 1 at the foot of the bed. Postoperative bedridden patients can place their feet on the two pedals 14, and then start the drive mechanism to rotate the turntable 11, thereby causing the pedals 14 to rotate around the turntable 11. The patient's legs follow the movement of the pedals 14, which can passively complete the reciprocating rehabilitation training of knee flexion and extension. There is no need for medical staff or family members to manually assist the patient's activities, which effectively reduces the workload of nursing staff and avoids pressure injuries caused by patients lying in bed for a long time after surgery.

[0022] Meanwhile, when the adjusting mechanism drives the slider 13 to slide within the strip groove 12, the distance between the pedal 14 and the axis of the turntable 11 can be adjusted. The farther the pedal 14 is from the axis of the turntable 11, the larger the radius of rotation of the pedal 14 around the axis during the rotation of the turntable 11, and the greater the range of flexion and extension of the patient's leg. Medical staff can adjust the range of motion according to the patient's postoperative rehabilitation progress, thus realizing the gradual progress of rehabilitation training and better adapting to the rehabilitation needs of patients at different stages.

[0023] In other embodiments, a base may be provided at the bottom of the housing 1, which can be placed directly at the foot of the bed, allowing the position of the housing 1 on the bed to be flexibly adjusted for use by patients of different heights.

[0024] In other embodiments, a folding telescopic piece can be provided between the strip groove 12 and the slider 13. The folding telescopic piece can block the strip groove 12. When the slider 13 slides in the strip groove 12, the folding telescopic piece can extend and retract with the slider 13. The folding telescopic piece can prevent external impurities from entering the housing 1 through the strip groove 12.

[0025] refer to Figure 2 , 3 As shown, the adjustment mechanism includes a rotating shaft 2, a sliding sleeve 21, a first hinge rod 22, and a push-pull assembly. The rotating shaft 2 is rotatably installed inside the housing 1. The drive mechanism is connected to the rotating shaft 2 in a transmission manner. The sliding sleeve 21 slides on the outside of the rotating shaft 2. One end of the first hinge rod 22 is hinged to the outside of the sliding sleeve 21, and the other end is hinged to the slider 13. The push-pull assembly is used to push the sliding sleeve 21 to move along the axis of the rotating shaft 2.

[0026] A bracket is installed inside the housing 1, and the rotating shaft 2 is rotatably mounted on the bracket via a bearing. The rotating shaft 2 is located in the middle of the housing 1 and is coaxially arranged with the turntable 11.

[0027] A sliding sleeve 21 is slidably sleeved on the outer side of the rotating shaft 2. In this embodiment, a linear groove 201 is preferably provided on the side wall of the rotating shaft 2. A movable block 202 located in the linear groove is fixed on the sliding sleeve 21. By sliding the movable block 202 in the linear groove 201, the sliding sleeve 21 can rotate synchronously with the rotating shaft 2 when the rotating shaft 2 rotates, and the sliding sleeve 21 can slide along the rotating shaft 2.

[0028] When the drive mechanism drives the rotating shaft 2 to rotate, the rotating shaft 2 can drive the turntable 11 to rotate synchronously through the sliding sleeve 21 and the first hinge rod 22. The first hinge rod 22 and the sliding sleeve 21 are used to realize power transmission, while the push-pull assembly is used to adjust the position of the sliding sleeve 21 on the rotating shaft 2. Thus, the sliding sleeve 21 can slide through the first hinge rod 22 to drive the slider 13 to slide in the strip groove 12, thereby changing the distance between the axis of the pedal 14 and the turntable 11, thereby adjusting the range of flexion and extension of the patient's leg.

[0029] In this embodiment, a gear 203 is preferably fixed in the middle of the drive mechanism shaft 2. A servo motor 204 is installed inside the housing 1. The output shaft of the servo motor 204 is equipped with a transmission gear 205 that is connected to the gear 203. When the servo motor 204 is started, the shaft 2 can be driven to rotate through the transmission gear 205 and the gear 203, thereby driving the turntable 11 to rotate.

[0030] The push-pull assembly includes a telescopic member 23, a rotating ring 24, and a second hinge rod 25. The telescopic member 23 is installed inside the housing 1. The rotating ring 24 is sleeved on the outside of the rotating shaft 2 and rotatably connected to the sliding sleeve 21. One end of the second hinge rod 25 is hinged to the telescopic end of the telescopic member 23, and the other end is hinged to the outside of the rotating ring 24.

[0031] The rotating ring 24 is rotatably connected to the sliding sleeve 2. When the rotating shaft 2 drives the sliding sleeve 21 to rotate, the rotating ring 24 will not rotate with the sliding sleeve 21 due to the influence of the second hinge rod 25. When the distance between the telescopic end of the telescopic member 23 and the rotating shaft 2 changes, the rotating ring 24 will be pulled to move outside the rotating shaft 2 through the second hinge rod 25, that is, the sliding sleeve 21 will slide on the rotating shaft 2. The sliding sleeve 21 can drive the slider 13 to slide in the strip groove 12 through the first hinge rod 22, thereby changing the position of the pedal 14. With this design, the position of the pedal 14 can be changed simply by the displacement of the telescopic end of the telescopic component 23. In this embodiment, the telescopic component 23 is preferably an electrically controlled telescopic rod; In this embodiment, reference Figure 2 As shown, there is one electrically controlled telescopic rod. The output end of the electrically controlled telescopic rod is simultaneously hinged to the second hinge rods 25 on both sides. When the output shaft of the electrically controlled telescopic rod extends or retracts, it can simultaneously control the pedals 14 on both turntables 11 to move synchronously. This allows for the synchronous adjustment of the pedal positions on both turntables in one go, eliminating the need to adjust the pedals on both sides separately. This makes the operation more convenient and avoids the problem of inconsistent adjustment range of the pedals on both sides causing disorder in the patient's leg training rhythm.

[0032] In other embodiments, the telescopic member 23 can be a manually controlled telescopic component, for example, using a screw to drive a component threadedly connected to it to slide.

[0033] The pedal 14 is connected to the slider 13 via the connecting shaft 15. The adjustment mechanism can drive the slider 13 to slide to one end of the strip groove 12 near the axis of the rotating shaft 11. At this time, the axis of the connecting shaft 15 coincides with the axis of the turntable 11. The pedal 14 includes a fixed frame 141 and two sliding frames 142. The fixed frame 141 is connected to the slider 13. The two sliding frames 142 slide at the front and rear ends of the fixed frame 141 respectively. The upper and lower sides of the two sliding frames 142 are connected by several mutually hinged support plates 143. Several elastic strips 144 are installed between the upper and lower sides of the two sliding frames 142. The elastic strips 144 are in contact with the inner side of the support plates 143. The fixed frame 141 is provided with a control component for driving the two sliding frames 142 to slide. The pedal 14 includes a first state and a second state. When the pedal 14 is in the first state, the two sliding brackets 142 are far apart from each other, the elastic strips 144 are straight, and the pedal 14 is rectangular in shape. When the pedal 14 is in the second state, the two sliding frames 142 are close to each other, and the elastic strips 144 are in an arc shape, and the pedal 14 as a whole is cylindrical.

[0034] Massage blocks are installed on the outer side of several support plates 143.

[0035] When the pedal 14 is in the first state, the several hinged support plates 143 installed between the two sliding frames 142 are in a taut state, that is, unfolded into a plane, and several elastic strips 144 are in the shape of straight strips, abutting against the inner side of several support plates 143 to support several support plates 143. Thus, the pedal 14 is rectangular in shape as a whole, and the patient can place on the rectangular pedal 14 to perform passive reciprocating rehabilitation training of knee flexion and leg extension. When the pedal 14 is switched to the second state, the control component drives the two sliding frames 142 to move relative to each other. When the two sliding frames 142 move relative to each other, they will compress several elastic strips 144 on both sides. The elastic strips 144 on both sides will deform under the pressure, bending in the middle to both sides, and the whole will deform into an arc shape. The arc-shaped elastic strips 144 push several mutually hinged support plates 143 to also become arc-shaped. Finally, the pedal 14 will be cylindrical. Since massage blocks are installed on the outside of the support plates 143, the patient can place their feet on the cylindrical pedal 14 to change the state of the pedal 14 and meet the needs of different patients.

[0036] When the adjustment mechanism drives the slider 13 to slide to one end of the strip groove 12 near the axis of the rotating shaft 11, the axis of the connecting shaft 15 coincides with the axis of the turntable 11. When the turntable 11 rotates, the pedal 14 will rotate coaxially with the turntable 11. The pedal 14 rotates with the turntable 11. At this time, the pedal 14 is converted to the second state, and the massage block can massage the patient's feet to relax them. Similarly, the cylindrical pedal 14 can massage the patient's thighs or calves, meeting the patient's relaxation needs during the rehabilitation process. It combines the functions of leg activity training and local muscle relaxation, without the need for additional massage devices.

[0037] The elastic strip 144 is preferably thermoplastic polyurethane (TPU), which has high elasticity and can undergo reversible deformation (from a straight line to an arc) when subjected to force.

[0038] The control assembly includes a moving block 3, two third hinge rods 31, a sliding shaft 32, and a guide rail 33. The moving block 3 is slidably mounted in the middle of the fixed frame 141. The two third hinge rods 31 are respectively hinged to both sides of the moving block 3, and the other ends of the two third hinge rods 31 are respectively hinged to the two sliding blocks 142. A connecting shaft 15 has a connecting groove in the middle, and the sliding shaft 32 is located in the connecting groove. One end of the sliding shaft 32 is connected to the moving block 3. The guide rail 33 is mounted on the inner side of the turntable 11, and the other end of the sliding shaft 32 is fixed with a guide block 34 located in the guide rail 33. The length of the guide rail 33 corresponds to the length of the strip groove 12. The guide rail 33 is composed of a linear guide rail 331 and an inclined guide rail 332. The linear guide rail 331 is located on the side away from the axis of the turntable 11, and the end of the inclined guide rail 332 faces the middle of the housing 1.

[0039] When the slider 13 is at one end of the strip groove 12 away from the axis of the turntable 11, the guide block 34 is at the upper end of the linear guide rail 331, the pedal 14 is in the first state, and the two sliding frames 142 are far apart from each other, that is, the pedal 14 is rectangular in shape. When adjusting the position of the pedal 14, the slider 13 is driven to slide in the strip groove 12 by the adjustment mechanism, that is, the guide block 34 slides in the linear guide rail 331. In this way, the pedal 14 is always rectangular, the length of the linear guide rail 331 is the distance of the radius of the pedal 14 rotating around the axis of the rotating shaft 11.

[0040] When the pedal 14 is adjusted to the second state, the slider 13 needs to be moved to the end of the strip groove 12 near the axis of the turntable 11, that is, the axis of the connecting shaft 15 coincides with the axis of the rotating shaft 2. During the movement of the slider 13, the guide block 34 moves from the linear guide rail 331 to the inclined guide rail 332, that is, the guide block 34 will move towards the middle of the housing 1. Through the sliding shaft 32, the moving block 3 is driven to slide in the fixed frame 141. The moving block 3 drives the two sliding frames 142 to slide relative to the fixed frame 141 through the third hinge rod 31, that is, the two sliding frames 142 move closer to each other. With this design, after the slider 13 is at the end of the strip groove 12 near the axis of the turntable 11, the guide block 34 moves to the end of the inclined guide rail 322, the axis of the connecting shaft 15 coincides with the axis of the rotating shaft 11, the pedal 14 is in the second state, and can be used to massage and relax the patient.

[0041] refer to Figure 4 As shown, the connecting shaft 15 and the slider 13 are rotatably mounted; The sliding shaft 32 is composed of two shafts 321 that are rotatably mounted to each other. The end of the shaft 321 connected to the moving block 3 is equipped with a first connecting piece 322, and the slider 13 is equipped with a second connecting piece 323 that matches the first connecting piece 322.

[0042] The sliding shaft 32 and the connecting shaft 15 are coaxially arranged. When the connecting shaft 15 rotates relative to the slider 13, the two shafts 321 will also rotate relative to each other. In this embodiment, the first connecting piece 322 and the second connecting piece 323 are preferably friction plates; When the pedal 14 is in the first state, the first connecting piece 322 and the second connecting piece 323 are far apart from each other. At this time, the pedal 14 and the rotating shaft 15 can rotate relative to the slider 13, which makes it easier for the patient to step on the pedal 14. When the pedal 14 is in the second state, the sliding shaft 32 will slide within the connecting shaft 15, that is, the first connecting piece 322 and the second connecting piece 323 abut against each other and are connected to each other by friction. At this time, the shaft 321 connected to the moving block 3 is affected by friction and cannot rotate relative to the slider 13. Consequently, the connecting shaft 15 cannot rotate relative to the slider 13. When the connecting shaft 15 is coaxial with the rotating shaft 2, the connecting shaft 15 can drive the pedal 14 to rotate and massage the patient.

[0043] The working principle of the embodiments is explained in detail below: Rehabilitation training: After surgery, the patient lies on the bed with both feet placed on the two pedals 14. At this time, the pedals 14 are in the first state, which is rectangular. The servo motor 204 is started, which drives the rotating shaft 2 to rotate through the transmission gears 205 and 203. The rotating shaft 2 drives the turntable 11 to rotate synchronously through the sliding sleeve 21 and the first hinge rod 22, thereby causing the pedals 14 to rotate around the turntable 11. The patient's legs follow the movement of the pedals 14, performing passive knee flexion and extension reciprocating rehabilitation training, avoiding pressure injury caused by prolonged bed rest after surgery.

[0044] Amplitude adjustment: When it is necessary to adjust the leg flexion and extension range according to the patient's postoperative rehabilitation process, the electric telescopic rod is activated. The telescopic end of the electric telescopic rod extends and retracts, which pulls the rotating ring 24 to move outside the rotating shaft 2 through the second hinge rod 25. This causes the sliding sleeve 21 to slide on the rotating shaft 2. The sliding sleeve 21 drives the slider 13 to slide in the strip groove 12 through the first hinge rod 22, thereby changing the distance between the pedal 14 and the axis of the turntable 11, and adjusting the patient's leg flexion and extension range.

[0045] Massage and relaxation: When massage and relaxation are needed, the adjusting mechanism moves the slider 13 to one end of the strip groove 12 near the axis of the turntable 11, so that the axis of the connecting shaft 15 coincides with the axis of the rotating shaft 2. During the movement of the slider 13, the guide block 34 moves from the linear guide rail 331 to the inclined guide rail 332, causing the moving block 3 to slide within the fixed frame 141. The moving block 3, through the third hinge rod 31, causes the two sliding frames 142 to move closer to each other, so that the pedal 14 is in the second state, which is cylindrical. At this time, the connecting shaft 15 is coaxial with the rotating shaft 2, and the connecting shaft 15 causes the pedal 14 to rotate, thus providing massage and relaxation to the patient through the massage block.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A patient bed mobility aid, characterized in that, include: The housing (1) has a turntable (11) rotatably mounted at both ends. The turntable (11) has a strip-shaped through groove (12). A slider (13) is slidably mounted in the strip-shaped through groove (12) along the direction perpendicular to the axis of the turntable (11). A pedal (14) is mounted on the slider (13). An adjustment mechanism is located inside the housing (1) and is used to drive the slider (13) to slide within the strip groove (12); The drive mechanism is located inside the housing (1) and is used to drive the two turntables (11) to rotate.

2. The patient bed mobility aid according to claim 1, characterized in that, The adjustment mechanism includes a rotating shaft (2), a sliding sleeve (21), a first hinge rod (22), and a push-pull assembly. The rotating shaft (2) is rotatably installed inside the housing (1). The drive mechanism is connected to the rotating shaft (2) in a transmission manner. The sliding sleeve (21) slides on the outside of the rotating shaft (2). One end of the first hinge rod (22) is hinged to the outside of the sliding sleeve (21), and the other end is hinged to the slider (13). The push-pull assembly is used to push the sliding sleeve (21) to move along the axis of the rotating shaft (2).

3. The patient bed mobility aid according to claim 2, characterized in that, The push-pull assembly includes a telescopic component (23), a rotating ring (24), and a second hinge rod (25). The telescopic component (23) is installed inside the housing (1). The rotating ring (24) is sleeved on the outside of the rotating shaft (2) and rotatably connected to the sliding sleeve (21). One end of the second hinge rod (25) is hinged to the telescopic end of the telescopic component (23), and the other end is hinged to the outside of the rotating ring (24).

4. The patient bed mobility aid according to claim 3, characterized in that, The pedal (14) is connected to the slider (13) via a connecting shaft (15); The pedal (14) includes a fixed frame (141) and two sliding frames (142). The fixed frame (141) is connected to the slider (13). The two sliding frames (142) slide at the front and rear ends of the fixed frame (141) respectively. The upper and lower sides of the two sliding frames (142) are connected by several mutually hinged support plates (143). Several elastic strips (144) are installed between the upper and lower sides of the two sliding frames (142). The elastic strips (144) are in contact with the inner side of the support plates (143). The fixed frame (141) is provided with a control component for driving the two sliding frames (142) to slide. The pedal (14) includes a first state and a second state: When the pedal (14) is in the first state, the two sliding frames (142) are far apart from each other, and several elastic strips (144) are straight strips, and the pedal (14) is rectangular in shape as a whole; When the pedal (14) is in the second state, the two sliding frames (142) are close to each other, and several elastic strips (144) are in an arc shape, and the pedal (14) as a whole is cylindrical.

5. A patient bed mobility aid according to claim 4, characterized in that, Massage blocks are installed on the outer side of several of the support plates (143).

6. A patient bed mobility aid according to claim 5, characterized in that, The control assembly includes a moving block (3), two third hinge rods (31), a sliding shaft (32), and a guide rail (33). The moving block (3) is slidably mounted in the middle of the fixed frame (141). The two third hinge rods (31) are respectively hinged to both sides of the moving block (3), and the other ends of the two third hinge rods (31) are respectively hinged to the two sliding blocks (142). A connecting groove is provided in the middle of the connecting shaft (15). The sliding shaft (32) is located in the connecting groove. One end of the sliding shaft (32) is connected to the moving block (3). The guide rail (33) is mounted inside the turntable (11). The other end of the sliding shaft (32) is fixed with a guide block (34) located in the guide rail (33). The length of the guide rail (33) is equal to the length of the strip groove (12). The guide rail (33) is composed of a linear guide rail (331) and an inclined guide rail (332). The linear guide rail (331) is located on the side away from the axis of the turntable (11), and the end of the inclined guide rail (332) faces the middle of the housing (1).

7. A patient bed mobility aid according to claim 6, characterized in that, The connecting shaft (15) and the slider (13) are rotatably mounted; The sliding shaft (32) is composed of two shafts (321) that are rotatably mounted to each other. The end of the shaft (321) connected to the moving block (3) is equipped with a first connecting piece (322), and the slider (13) is equipped with a second connecting piece (323) that matches the first connecting piece (322).

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