Multifunctional medical seat with standing function

Abstract

This invention relates to a multifunctional medical chair with a standing function, comprising a mobile chassis, a height-adjustable seat, a backrest adjustment mechanism, a backrest support mechanism, and support legs. The mobile chassis can move omnidirectionally via Mecanum wheels; the height-adjustable seat is mounted on the mobile chassis and includes a seat back, a rotating seat plate, a seat body, and a lifting transmission device; the backrest adjustment mechanism is mounted on the back of the seat and is used to adjust the movement of the seat back when standing or lying down; the backrest support mechanism is fixed to the mobile chassis via a fixed base plate, and its main structure is a tray drive device; the support legs are used to balance the center of gravity of the device when lying down. When the standing function is activated, the backrest adjustment mechanism keeps the seat back vertical, and the backrest support mechanism is closed; when the lying down function is activated, the support legs are opened, driving the tray drive device to open the backrest support mechanism, and adjusting the backrest adjustment mechanism to make the seat back horizontal; when returning to the sitting position, the backrest support mechanism closes, pushing the seat back back to the vertical position, and the support legs close.

Description

Technical Field

[0001] This invention relates to the field of medical device structural technology, and in particular to a multifunctional medical chair with a standing function. Background Technology

[0002] With the continuous development of medical and nursing technologies, the demand for multifunctional assistive devices in patient transport, rehabilitation training, and daily care is increasing. Traditional medical and nursing equipment (such as hospital beds, wheelchairs, and transport carts) usually have limited functions and cannot meet the diverse needs of patients in different scenarios, especially in terms of mobility, position switching, and operational safety.

[0003] To address the aforementioned problems, this invention enables omnidirectional movement and allows for sitting, assisted standing, and lying-down functions according to different patient needs. Summary of the Invention

[0004] To achieve the above objectives, the technical solution provided by this invention is: a multifunctional medical chair with a standing function, comprising five parts: a mobile chassis, a height-adjustable seat, a backrest adjustment mechanism, a backrest support mechanism, and support legs. The mobile chassis includes a Mecanum wheel frame, a Mecanum wheel set, and a chassis upper plate.

[0005] Furthermore, the Mecanum wheel set comprises four wheels and consists of a Mecanum wheel, a Mecanum wheel motor, a wheel system support plate, and a shock absorber.

[0006] Preferably, the wheel frame is composed of multiple sets of square tubes, and the upper plate of the chassis should have a concave opening to prevent interference with the internal gear track.

[0007] Furthermore, the lifting seat is mounted on a mobile chassis and includes a seat back, a rotating seat plate, a seat body, and a lifting transmission device.

[0008] Preferably, the side of the seat back is provided with a protective plate motor and a protective plate, the protective plate motor is used to drive the protective plate, and the protective plate is a 1 / 4 elliptical wrap-around structure.

[0009] Furthermore, the seat body includes a visual camera, a lifting foot pedal, an internal gear track, a limiting slide rail, a first rotating shaft, and a second rotating shaft. The visual camera is located on the side of the seat body for observing the surrounding environment. The lifting foot pedal is located at the outer end of the internal gear track, which is located below the seat body. The limiting slide rail should include two parallel rails distributed on the seat body. The second rotating shaft and the first rotating shaft are respectively used to connect the rotating seat plate and the backrest support plate. An internal gear fixing seat is provided under the rotating seat plate. The seat body has an opening for the movement of the internal gear fixing seat and the internal gear. The lifting transmission device includes a drive motor, a motor support, a pinion gear, and an internal gear. The lifting motor drives the pinion gear to move the internal gear along the internal gear track, thereby driving the rotating seat plate to rotate to achieve the standing function.

[0010] Preferably, the lifting foot pedal includes a foot lifting motor, a foot screw, and a foot pedal.

[0011] Furthermore, the internal gear is not a complete internal gear.

[0012] Furthermore, one end of the internal gear is connected to the internal gear fixing seat and is located inside the internal gear track.

[0013] Furthermore, the backrest adjustment mechanism should include two components, and their width should be the same as the width of the limiting slide rail.

[0014] Furthermore, the backrest adjustment mechanism includes a telescopic arm, a telescopic arm support, a rotating limiting block, a limiting base, and an adjustment motor. The telescopic arm includes a first telescopic arm and a second telescopic arm. The rotating limiting block is mounted on the limiting base and connected to the first telescopic arm. The adjustment motor is mounted on the motor mounting position of the limiting base and is used to drive the rotating limiting block to rotate. The limiting base is set inside the limiting slide rail.

[0015] Preferably, the cross-sections of the first telescopic arm and the second telescopic arm are circular.

[0016] Furthermore, the rotating limiting block is provided with a limiting tongue, a first opening and a telescopic arm mounting hole, and the limiting base is provided with a limiting groove, a second opening and a motor mounting position, and the limiting tongue can rotate within the limiting groove.

[0017] It should be noted that when the stand-up function is activated, the first opening and the second opening are misaligned, and the backrest adjustment mechanism can only slide along the limit track. When the stand-up function is activated, the first opening and the second opening are aligned, and the backrest adjustment mechanism can rotate around the telescopic arm mounting hole along the opening, thereby pushing the seat back to rotate to achieve the reclining function.

[0018] Furthermore, the backrest support mechanism includes a fixed base plate and a support plate driving device. The fixed base plate is used to fix the backrest support mechanism. The driving device includes a motor slide plate, a lead screw motor, a motor slider, a lead screw, a lead screw support seat, a lead screw fixing block, a backrest support, and a backrest support plate. The backrest support plate is connected to the seat body. The backrest support is fixed behind the backrest support plate. The lead screw fixing block is connected to the backrest support and fixed to the upper end of the lead screw. The lead screw support seat cooperates with the lead screw and is fixed above the motor slide plate. The lead screw motor is connected to the lead screw and fixed to the motor slider. The motor slider can slide up and down along the motor slide rail on the motor slide plate.

[0019] Preferably, the backrest support plate is provided with a telescopic arm groove and a pivot.

[0020] Furthermore, the outrigger includes an omnidirectional wheel, an outrigger frame, an outrigger seat, a support link, and a movable slider. The outrigger seat is fixed behind the backrest support plate and includes a rotating seat, a slide rail, and a slide rail stop. The outrigger frame is connected to the rotating seat, and the omnidirectional wheel is installed below the outrigger frame. One end of the support link is connected to the rotating seat, and the other end is connected to the movable slider. The movable slider can slide on the slide rail, and the slide rail stop is used to limit the sliding distance of the movable slider.

[0021] Compared with existing technologies, the multifunctional medical chair provided by this invention has significant advantages: 1. The standing and sitting functions are driven by internal gears for a smoother ride.

[0022] 2. The chassis uses Mecanum wheel drive, which can move flexibly in narrow or complex spaces without human intervention.

[0023] 3. Equipped with a visual camera, it can be remotely controlled when medical staff cannot arrive at the scene in time.

[0024] 4. It can switch between lying down, sitting up, and standing up according to the different needs of patients, thereby improving nursing efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mobile chassis of the present invention; Figure 3 This is a schematic diagram of the height-adjustable seat of the present invention; Figure 4 This is a schematic diagram of the seat body of the present invention; Figure 5 This is a plan view of the seat body of the present invention; Figure 6 This is a schematic diagram of the invention in its lying position; Figure 7 This is a schematic diagram of the standing state of the present invention; Figure 8 This is a schematic diagram of the supporting mechanism of the present invention; Figure 9 This is a schematic diagram of the support leg of the present invention; Figure 10 This is a schematic diagram of the support leg of the present invention; Figure 11 This is a schematic diagram of the backrest adjustment mechanism in the standing position of the present invention. Figure 12 This is a partial schematic diagram of the backrest adjustment mechanism in the lying position of the present invention; Figure 13 This is a schematic diagram of the rotating limiting block of the present invention; Figure 14 A schematic diagram of the limiting base of the present invention.

[0026] As shown in the figure: 1. Mobile chassis; 11. Mecanum wheel frame; 12. Mecanum wheel set; 121. Mecanum wheel; 122. Mecanum wheel motor; 123. Wheel system support plate; 124. Shock absorber; 13. Chassis upper plate; 2. Lifting seat; 21. Seat back; 211. Protective plate motor; 212. Protective plate; 22. Rotating seat plate; 221. Internal gear fixing seat; 23. Seat body; 231. Vision camera; 232 Lifting foot pedal; 2321 Foot pedal lifting motor; 2322 Foot pedal lead screw; 2323 Foot pedal; 233 Internal gear rail; 234 Limiting slide rail; 235 First rotating shaft; 236 Second rotating shaft; 24 Lifting transmission device; 241 Lifting motor; 242 Motor support; 243 Pinion gear; 244 Internal gear; 3. Backrest adjustment mechanism; 31 Telescopic arm; 311 First telescopic arm; 31 2. Second telescopic arm; 32. Telescopic arm support; 33. Rotation limit block; 331. Limiting tongue; 332. First opening; 333. Telescopic arm mounting hole; 34. Limiting base; 341. Limiting groove; 342. Second opening; 343. Motor mounting position; 35. Adjusting motor; 4. Backrest support mechanism; 41. Fixed base plate; 42. Pallet drive device; 421. Motor slide plate; 4211. Motor slide rail; 4 22. Lead screw motor; 423. Motor slider; 424. Lead screw; 425. Lead screw support seat; 426. Lead screw fixing block; 427. Backrest support; 428. Backrest support plate; 4281. Telescopic arm groove; 4282. Rotating shaft; 5. Outrigger; 51. Omnidirectional wheel; 52. Outrigger bracket; 53. Support link; 54. Outrigger seat; 541. Rotating seat; 542. Slide rail; 543. Slide rail stop; 55. Moving slider. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the invention involve directional indicators (such as up, down, left, right, front, back, etc.), such directional indicators are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indicators will also change accordingly. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or point connections; they can refer to direct connections or connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] As shown in the figure, a multifunctional medical chair with a standing function includes a mobile chassis 1, a height-adjustable seat 2, a backrest adjustment mechanism 3, a backrest support mechanism 4, and support legs 5. The mobile chassis 1 includes a Mecanum wheel frame 11, a Mecanum wheel set 12, and a chassis upper plate 13. The Mecanum wheel set 12 should include four wheels and is composed of Mecanum wheels 121, a Mecanum wheel motor 122, a wheel system support plate 123, and a shock absorber 124.

[0031] The lifting seat 2 is mounted on a mobile chassis 1 and includes a seat back 21, a rotating seat plate 22, a seat body 23, and a lifting transmission device 24. An internal gear fixing seat 221 is provided under the rotating seat plate 22. The seat body 23 includes a vision camera 231, a lifting foot pedal 232, an internal gear track 233, a limiting slide rail 234, a first rotating shaft 235, and a second rotating shaft 236. The internal gear track 233 is located below the seat body 23. The limiting slide rail 234 should include two parallel sections distributed on the seat body 23. The first rotating shaft 235 and the second rotating shaft 236 are respectively... The seat body 23 is provided with an opening for the movement of the internal gear fixing seat 221 and the internal gear 244. The lifting transmission device 24 includes a lifting motor 241, a motor support 242, a pinion 243 and an internal gear 244. The motor support 242 is fixed under the seat body 23 and is used to install the lifting motor 241. The pinion 243 is connected to the lifting motor 241 and is used to drive the internal gear 244. The internal gear 244 is not a complete internal gear. One end of it is connected to the internal gear fixing seat 221 and is located inside the internal gear track 233.

[0032] In a preferred embodiment, the lifting foot pedal 232 includes a foot pedal lifting motor 2321, a foot pedal screw 2322, and a foot pedal 2323. The foot pedal lifting motor 2321 drives the foot pedal screw 2322, which in turn drives the foot pedal 2323 to rise and fall. When the standing function is realized, the foot pedal 2323 is lowered to the ground, and when other functions are realized, the foot pedal 2323 is in the rising state.

[0033] The backrest adjustment mechanism 3 should include two components, with a width equal to that of the limiting slide rail 234. Specifically, it includes a telescopic arm 31, a telescopic arm support 2, a rotating limiting block 33, a limiting base 34, and an adjustment motor 35. The telescopic arm 31 includes a first telescopic arm 311 and a second telescopic arm 312. The telescopic arm support 32 is fixed behind the seat back 21 and is used to connect the second telescopic arm 312. The first telescopic arm 311 and the second telescopic arm 32 can be shortened and extended. The rotating limiting block 33 is installed inside the limiting base 34 and connected to the first telescopic arm 31. The adjustment motor 35 is installed in the motor mounting position 343 inside the limiting base 34 and is used to drive the rotating limiting block 33 to rotate. The limiting base 34 is located inside the limiting slide rail 234.

[0034] In a preferred embodiment, the rotating limiting block 33 includes a limiting tongue 331, a first opening 332, and a telescopic arm mounting hole 333; the limiting base 34 includes a limiting groove 341, a second opening 342, and a motor mounting position 343, and the limiting tongue 331 can be limited to rotate within the limiting groove 341.

[0035] It should be noted that: when in the initial state, the starting adjustment motor 35 drives the rotating limit block 33 and the first telescopic arm 311 to rotate, so that the limit tongue 331 is close to the back of the limit groove 341, and the first opening 332 and the second opening 342 are misaligned; when lying flat, the starting adjustment motor 35 drives the rotating limit block 33 and the first telescopic arm 311 to rotate, so that the limit tongue 331 is close to the front of the limit groove 341, and the first opening 332 and the second opening 342 are aligned. At this time, the backrest adjustment mechanism 3 can rotate around the telescopic arm mounting hole 333 along the opening, thereby pushing the seat back 21 to rotate to achieve the lying flat function.

[0036] The backrest support mechanism 4 includes a fixed base plate 41 and a tray drive device 42. One end of the fixed base plate 41 is fixed on the mobile chassis 1, and the other end is connected to the tray drive device 42. The driving device 42 includes a motor slide plate 421, a lead screw motor 422, a motor slider 423, a lead screw 424, a lead screw support 425, a lead screw fixing block 426, a backrest support 427, and a backrest support plate 428. The backrest support 427 is fixed behind the backrest support plate 43. The lead screw fixing block 426 is connected to the backrest support 427 and fixed to the upper end of the lead screw 424. The lead screw support 425 cooperates with the lead screw 424 and is fixed above the motor slide plate 421. The motor 422 is connected to the lead screw 424 and fixed on the motor slider 423. The motor slider 423 can slide up and down along the motor slide rail 4211 on the motor slide plate 421. The backrest support plate 428 is connected to the second rotating shaft 236.

[0037] The support leg 5 is installed behind the backrest support plate 428 and includes an omnidirectional wheel 51, a support leg frame 52, a support leg seat 54, a support link 53, and a movable slider 55. The support leg seat 54 is fixed behind the backrest support plate 428 and includes a rotating seat 541, a slide rail 542, and a slide rail stop 543. The support leg frame 52 is connected to the rotating seat 541, and the omnidirectional wheel 51 is installed below the support leg frame 52. One end of the support link 53 is connected to the rotating seat 541, and the other end is connected to the movable slider 55. The movable slider 55 can slide on the slide rail 542, and the slide rail stop 543 is used to limit the sliding distance of the movable slider 55.

[0038] In a preferred embodiment, the wheel frame 11 is composed of multiple sets of square tubes, and the upper plate 13 of the chassis should be provided with a concave opening to prevent interference with the internal gear track 233.

[0039] In a preferred embodiment, the side of the seat back 21 is provided with a protective motor 211 and a protective plate 212. The protective motor 211 is used to drive the protective plate 212, and the protective plate is a 1 / 4 elliptical wrap-around structure.

[0040] In a preferred embodiment, the visual camera 231 is disposed on the side of the seat body 23 for observing the surrounding environment, and the foot pedal 232 is disposed at the outer end of the internal gear track 233.

[0041] In a preferred embodiment, the cross-sections of the first telescopic arm 311 and the second telescopic arm 312 are circular.

[0042] As a preferred embodiment, the backrest support plate is provided with a telescopic arm groove 4281 and a pivot 4282.

[0043] How to use this invention: In the initial state: the first opening 332 of the rotating limit block 33 and the second opening 342 of the limit base 34 in the backrest adjustment mechanism 3 are misaligned; the first telescopic arm 311 and the second telescopic arm 312 are in a shortened state; the rotating seat plate 22 is in a horizontal state; the internal gear 244 is located in the internal gear track 233; the protective plate 212 is in an open state; the lead screw support rod 425 in the backrest support mechanism 4 is located below the lead screw 424; the lead screw motor 422 is located above the motor slide plate 421, so that the backrest support plate 428 is close to the back of the seat back 21; and the support leg 5 is in a closed state.

[0044] During omnidirectional movement, in the initial state, the protective plate motor 211 starts, driving the protective plate 212 to be in a closed protective state, and the Mecanum wheel motor 122 starts, driving the Mecanum wheel 121 to move in all directions; when there are no medical personnel around and it is necessary to remotely control the transfer of patients, the visual camera 231 starts to observe the surrounding environment.

[0045] When assisting the patient to stand, in the initial state, the foot pedal lifting motor 2321 in the lifting foot pedal 232 drives the foot pedal screw 2322, which in turn drives the foot pedal 2323 to descend to the ground. The lifting motor 241 starts, drives the pinion 243 to drive the internal gear 244 to move along the internal gear track 233, which in turn drives the rotating seat plate 22 to rotate around the front rotating shaft 235. At this time, the limiting base 34 in the backrest adjustment mechanism 3 slides along the limiting slide rail 234 on the seat body 23, and the telescopic arm 31 gradually stretches with the movement, so that the seat backrest 21 is always in a vertical state.

[0046] When the patient needs to lie flat, the position should be restored to the initial state. The support link 53 drives the sliding slider 55 to slide on the slide rail 542 until it stops at the slide rail stop 543, thus opening the support leg 5. The lead screw motor 422 starts and drives the lead screw motor 422 to move downward along the motor slide rail 4211 until it is below the motor slide plate 421. At this time, the backrest support plate 428 rotates around the pivot 4282 to a horizontal state, and the backrest support mechanism is in the open state. The adjustment motor 35 in the drive adjustment mechanism 3 drives the rotation limit block 33 and the first telescopic arm 311 to rotate, so that the limit tongue 331 is close to the front side of the limit groove 341. At this time, the first opening 332 and the second opening 342 are aligned, so that the first telescopic arm 311 can rotate around the telescopic arm mounting hole 343, thereby driving the backrest adjustment mechanism 3 to rotate around the telescopic arm mounting hole 343. At this time, the seat backrest 21 can be rotated to a flat state.

[0047] When the seat returns from the lying position to the initial position, the lead screw motor 422 starts, causing the lead screw motor 422 to move upward along the motor slide rail 4211 until it is above the motor slide plate 421. At this time, the backrest support plate 428 rotates around the pivot 4282, pushing the seat back 21 back to the vertical position, and the backrest support mechanism returns to the closed position. The adjustment motor 35 in the drive adjustment mechanism 3 drives the rotation limit block 33 and the first telescopic arm 311 to rotate, so that the limit tongue 331 is pressed against the back side of the limit groove 341, and the first opening 332 and the second opening 342 return to the misaligned state. The support leg 5 is closed.

[0048] To protect patient safety, the mobile chassis 1 should be in the closed position when the patient is standing.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional medical chair with a standing function, characterized in that: It comprises five parts: a mobile chassis, a lifting seat, a backrest adjustment mechanism, a backrest support mechanism, and outriggers. The lifting seat is mounted on the mobile chassis, the backrest adjustment mechanism is installed behind the lifting seat, the backrest support mechanism is fixed to the mobile chassis and connected to the lifting seat, and the outriggers are installed behind the backrest support mechanism.

2. The multifunctional medical chair with a standing function according to claim 1, wherein the mobile chassis includes four Mecanum wheel sets, a Mecanum wheel frame and a chassis upper plate, and the Mecanum wheel set includes a Mecanum wheel, a Mecanum wheel motor, a shock absorber and a wheel support plate.

3. A multifunctional medical chair with a standing function according to claim 1, characterized in that: The lifting seat includes a lifting seat back, a rotating seat plate, a seat body, and a lifting transmission device. The seat body is provided with an internal gear track and a limiting slide rail. The lifting transmission device is installed under the seat body. The lifting motor drives the pinion gear to drive the internal gear to move along the internal gear track, thereby driving the rotating seat plate to rotate to realize the standing function.

4. A multifunctional medical chair with a standing function according to claim 3, characterized in that: The seat body is equipped with a height-adjustable foot pedal.

5. A multifunctional medical chair with a standing function according to claim 1, characterized in that: The backrest adjustment mechanism is installed on the back of the chair and enables the backrest of the medical chair to remain vertical when the chair is in the standing position. It includes a telescopic arm, a telescopic arm support, a rotating limit block, a limit base, and an adjustment motor. The telescopic arm includes a first telescopic arm and a second telescopic arm. The rotating limit block is installed inside the upper part of the limit base and is connected to the first telescopic arm. The adjustment motor is installed in the motor mounting position inside the limit base and is used to drive the rotating limit block to rotate. The limit base is set in the limit slide rail.

6. A multifunctional medical chair with a standing function according to claim 4, characterized in that: The rotating limiting block is provided with a limiting tongue, a first opening and a telescopic arm mounting hole, and the limiting base is provided with a limiting groove, a second opening and a motor mounting position. The limiting tongue can be limited to rotate within the limiting groove.

7. A multifunctional medical chair with a standing function according to claim 5, characterized in that: When the seat is upright, the first opening and the second opening are misaligned, and the backrest adjustment mechanism can only slide along the limit track. When the seat is upright, the first opening and the second opening are aligned, and the backrest adjustment mechanism can rotate around the telescopic arm mounting hole along the opening, thereby pushing the seat back to rotate to achieve the reclining function.

8. A multifunctional medical chair with a standing function according to claim 1, characterized in that: The backrest support mechanism includes a fixed base plate and a support plate driving device. The fixed base plate is used to fix the backrest support mechanism. The driving device includes a motor slide plate, a lead screw motor, a motor slider, a lead screw, a lead screw support seat, a lead screw fixing block, a backrest support, and a backrest support plate. The backrest support plate is connected to the seat body. The backrest support is fixed behind the backrest support plate. The lead screw fixing block is connected to the backrest support and fixed to the upper end of the lead screw. The lead screw support seat cooperates with the lead screw and is fixed above the motor slide plate. The lead screw motor is connected to the lead screw and fixed on the motor slider. The motor slider can slide up and down along the motor slide rail on the motor slide plate.

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