Wheelchair bed convenient for form conversion

Abstract

The utility model discloses a wheelchair bed convenient for form conversion, which comprises a frame body, a wheelchair bed, a wheelchair bed, a wheelchair bed and a wheelchair bed, and is characterized in that wheels and universal wheels are arranged at the bottom of the frame body; the seat plate is fixedly arranged on the top surface of the frame body, and the two sides of the seat plate are symmetrically and rotationally connected with middle supporting plates; the bottom of the back plate is rotationally connected with the rear end of the seat plate through a first shaft rod, upper supporting plates are symmetrically and rotationally connected to the two sides of the back plate, the first shaft rod is fixedly connected with the back plate, and a seat air spring is fixedly installed between the back plate and the seat plate; the front end of the seat plate is rotationally connected with the two leg supporting plates through a second shaft rod; the first transmission assemblies are arranged between the first shaft rod and the two middle supporting plates; the second transmission assemblies are arranged below the upper supporting plates; and the third transmission assemblies are arranged between the first shaft rod and the two leg supporting plates. The wheelchair bed disclosed by the utility model is convenient for form conversion, convenient to use and low in manufacturing cost, and has a good market prospect.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair bed technology, and in particular to a wheelchair bed that is easy to transform. Background Technology

[0002] A wheelchair is a wheeled chair that helps replace walking. It is an important mobility tool for the injured, sick, and disabled for home rehabilitation, transportation, medical visits, and outdoor activities. To avoid users having to repeatedly get in and out of the wheelchair, wheelchair beds have emerged, allowing users to transform between wheelchair and bed modes. Existing wheelchair beds either use electric drive for automatic transformation or require manual operation. Electric wheelchair beds are expensive, making them unaffordable for most families; while manually operated wheelchair beds are cumbersome and inconvenient to operate. Therefore, a wheelchair bed with easy mode transformation is designed, which is low-cost and has a promising market prospect. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a wheelchair bed that is easy to transform, convenient to use, low in manufacturing cost, and has good market prospects.

[0004] This utility model provides a wheelchair bed that is easy to transform, comprising:

[0005] The frame has wheels symmetrically arranged on both sides of its bottom rear end and casters symmetrically arranged on both sides of its bottom front end.

[0006] The seat plate is fixedly installed on the top surface of the frame, and the middle support plate is symmetrically rotatably connected to both sides of it;

[0007] The back plate has its bottom rotatably connected to the rear end of the seat plate via a first shaft, and upper support plates are symmetrically rotatably connected to both sides of it. The first shaft is fixedly connected to the back plate.

[0008] The front end of the seat plate is rotatably connected to two leg supports via a second shaft, and the bottom end of the leg supports is fixedly connected to a foot pedal.

[0009] A seat gas spring is fixedly installed between the seat plate and the backrest, and its control handle is fixedly located on one side of the seat plate;

[0010] A drive assembly, connected to the wheel drive, includes a roller-type one-way clutch mounted on the wheel axle and a separable drive rocker arm inserted into the roller-type one-way clutch;

[0011] The first transmission assembly is provided between the first shaft and the two middle support plates, and is used to drive the middle support plates to rotate outward and flatten as the back plate rotates backward and flattens.

[0012] The second transmission assembly is provided below the upper support plate and is fixedly connected to the frame. It is used to drive the upper support plate to rotate outward and flatten as the back plate rotates backward and flattens.

[0013] The third transmission component is provided between the first shaft and the two support legs, and is used to drive the support legs to rotate upward and flatten as the back plate rotates backward and flattens.

[0014] Furthermore, the bottom of the middle support plate is rotatably connected to the seat plate via a third shaft;

[0015] A first torsion spring is provided on the third shaft, and a first limiting block is fixedly provided on the outer side of the seat plate located on the inner side of the middle support plate, which is used to limit the middle support plate so that it is in a vertical state when it is not subjected to external force.

[0016] A second limiting block is fixedly installed on the outer side of the seat plate below the middle support plate to limit the middle support plate so that its maximum outward rotation angle is 90 degrees.

[0017] Furthermore, the first transmission assembly includes a first vertical rod and a second vertical rod;

[0018] The top end of the first vertical rod is fixedly connected to the first shaft, and the bottom end is fixedly connected to a first horizontal rod parallel to the first shaft.

[0019] The top end of the second vertical rod is fixedly connected to the bottom of the middle support plate near the first shaft, and the bottom end is fixedly connected to the second horizontal rod; the second vertical rod is inclined at 5-10 degrees from top to bottom towards the seat plate, and the second horizontal rod rests on the first horizontal rod.

[0020] Furthermore, one side of the upper support plate is rotatably connected to the back plate via a fourth shaft;

[0021] A second torsion spring is provided on the fourth shaft, and a third limiting block is provided between one side of the back of the back plate and the upper support plate to limit the upper support plate so that it forms an angle of 100-130 degrees with the back of the back plate when it is not subjected to external force.

[0022] A fourth limiting block is provided between one side of the front of the back plate and the upper support plate to limit the upper support plate so that it can rotate outward to the maximum extent until it is on the same plane as the back plate; a folding support leg is provided on the inner side of the upper support plate.

[0023] Furthermore, the second transmission component includes a bracket and a stop block. The stop block is provided below each of the upper support plates, and the bracket is provided below each of the stop blocks. The bracket is fixedly connected to the frame. The bottom of the stop block is fixedly connected to the bracket through a support column. The stop block is spherical, and the top surface of the stop block is provided with a support plane.

[0024] Furthermore, the third transmission assembly includes a connecting rod;

[0025] The connecting rod is located below the seat plate, between the first shaft and the leg support plate; one end of the connecting rod is provided with a crank, and the other end is provided with a first support rod and a second support rod;

[0026] One end of the crank is fixedly connected to the first shaft, and the other end is rotatably connected to the connecting rod; one end of the first support rod is rotatably connected to the second shaft, and the other end is rotatably connected to the connecting rod; one end of the second support rod is rotatably connected to the back of the leg plate, and the other end is rotatably connected to the connecting rod.

[0027] Furthermore, the roller-type one-way clutch includes a housing and a clutch disc;

[0028] The housing is disposed on the outside of the wheel and is fixedly sleeved with the wheel axle;

[0029] The clutch plate is disposed inside the housing and is rotatably connected to the wheel axle via a bearing; the outer circumference of the clutch plate is evenly distributed with a plurality of one-way clutch grooves, and each one-way clutch groove is provided with a roller;

[0030] A slot is provided on one side of the clutch plate, and a clearance groove is provided on the housing above and in front of the clutch plate; the bottom end of the drive rocker passes through the clearance groove and can be detachably inserted into the slot.

[0031] Furthermore, the bottom end of the drive rocker arm is provided with a plurality of positioning holes at equal intervals along its length; the middle support plate is provided with a mounting slot adapted to the bottom end of the drive rocker arm along a direction perpendicular to the middle support plate; the top of the middle support plate is provided with a through hole communicating with the mounting slot, and the positioning pin can be detachably passed through the through hole and inserted into the mounting slot.

[0032] Furthermore, the seat plate is provided with a slot, and the frame is provided with a sliding plate mechanism that can block and open the slot;

[0033] The skateboard mechanism includes a skateboard that is separable from the bottom and embedded in the slot; first slides are symmetrically arranged on both sides below the skateboard, the front end of the first slide is fixedly connected to the seat plate, and the rear end is open; a second slide is arranged on the back of the back plate corresponding to the first slide, the top end of the second slide is fixedly connected to the back plate, and the bottom end is open; after the back plate is rotated backward and laid flat, the second slide and the first slide are connected to form a slide frame;

[0034] A first round rod is rotatably mounted on the frame below the first slide rail, and a winding wheel is fixedly sleeved on the first round rod. A handle sleeve is mounted on the extended axis of the first round rod, and the handle sleeve is mounted on the frame so as to slide along its axis and rotate around its axis. An internal gear ring is fixedly mounted on one end of the first round rod near the handle sleeve, and an external gear ring adapted to the internal gear ring is fixedly mounted on one end of the handle sleeve. A first guide wheel and a second guide wheel are arranged side by side on the frame, and a traction rope is wound on the winding wheel. One end of the traction rope is guided by the first guide wheel and fixedly connected to the front end of the slide plate, and the other end is guided by the second guide wheel and fixedly connected to the rear end of the slide plate.

[0035] A second round rod is rotatably disposed between the two first slide rails. A cam is rotatably sleeved on the second round rod. A baffle is fixedly disposed on the bottom surface of the slide plate behind the cam, which is used to drive the cam to rotate so that it presses against the bottom surface of the slide plate.

[0036] Furthermore, a headrest is fixedly installed on the top of the back panel; handles are symmetrically fixedly connected to the top of the back panel on both sides of the headrest.

[0037] Compared with the prior art, the beneficial effects of this utility model are:

[0038] When using this wheelchair bed, the user moves the control handle to unlock the seat gas springs and simultaneously leans back against the backrest. As the backrest rotates, the first transmission assembly drives the two middle support plates to rotate outwards and open flat, while the second transmission assembly drives the two upper support plates to rotate outwards and open flat. The third transmission assembly then drives the two leg support plates to rotate upwards to a horizontal position. Finally, the user releases the control handle to lock the seat gas springs, completing the transformation from wheelchair mode to bed mode. This wheelchair bed requires no electric equipment for rapid mode transformation, is easy to use, has low manufacturing costs, a wide target audience, and a promising market prospect.

[0039] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0040] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0041] Figure 1 This is a side view of the wheelchair-shaped structure of the wheelchair bed.

[0042] Figure 2 This is a rear view schematic diagram of the wheelchair-shaped structure of the wheelchair bed;

[0043] Figure 3 A top view of the bed structure of a wheelchair bed;

[0044] Figure 4 This is a schematic diagram of the cross-sectional structure of a roller-type one-way clutch.

[0045] Figure 5 This is a schematic diagram of the skateboard mechanism;

[0046] Figure 6 This is a schematic diagram illustrating the driving principle of a skateboard.

[0047] The diagram labels are as follows: 1. Frame; 2. Seat plate; 3. Back plate; 4. Leg support plate; 5. Skateboard mechanism; 6. Drive assembly; 7. First transmission assembly; 8. Second transmission assembly; 9. Third transmission assembly;

[0048] 11. Wheel; 12. Caster wheel; 13. Axle;

[0049] 21. Middle support plate; 22. Third shaft; 23. First limiting block; 24. Second limiting block; 25. Slotting; 26. Installation through slot;

[0050] 31. First axle; 32. Upper support plate; 33. Seat gas spring; 34. Control handle; 35. Fourth axle; 36. Third limit block; 37. Fourth limit block; 38. Folding support leg; 39. Headrest; 310. Handle;

[0051] 41. Second axle; 42. Foot pedal;

[0052] 51. Skateboard; 52. First slide; 53. Second slide; 54. First round rod; 55. Winding reel; 56. Handle sleeve; 57. First guide wheel; 58. Second guide wheel; 59. Towing rope; 510. Second round rod; 511. Cam; 512. Baffle plate;

[0053] 61. Drive rocker arm; 62. Housing; 63. Clutch plate; 64. Bearing; 65. One-way clutch groove; 66. Roller; 67. Slot; 68. Clearance groove; 69. Positioning hole;

[0054] 71. First vertical bar; 72. Second vertical bar; 73. First horizontal bar; 74. Second horizontal bar;

[0055] 81. Bracket; 82. Collision block; 83. Support column;

[0056] 91. Connecting rod; 92. Crank; 93. First support rod; 94. Second support rod. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0058] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0059] Please refer to Figures 1-6 An embodiment of this utility model provides a wheelchair bed that is easy to transform, comprising:

[0060] The frame 1 has wheels 11 symmetrically arranged on both sides of its bottom rear end and casters 12 symmetrically arranged on both sides of its bottom front end.

[0061] The seat plate 2 is fixedly installed on the top surface of the frame 1, and the middle support plate 21 is symmetrically rotatably connected on both sides of it;

[0062] The back panel 3 is rotatably connected to the rear end of the seat plate 2 via the first shaft 31 at its bottom. The upper support plate 32 is rotatably connected to both sides of the back panel 3. The first shaft 31 is fixedly connected to the back panel 3. A seat gas spring 33 is fixedly installed between the back panel 3 and the seat plate 2. The control handle 34 of the seat gas spring 33 is fixedly set on one side of the seat plate 2.

[0063] The front end of the leg support plate 4 and the seat plate 2 are rotatably connected to two leg support plates 4 via the second shaft 41, and the bottom end of the leg support plate 4 is fixedly connected to the foot pedal 42.

[0064] The drive assembly 6 is connected to the wheel 11 in a transmission manner, and includes a roller-type one-way clutch mounted on the wheel axle 13 of the wheel 11 and a separable drive rocker 61 inserted into the roller-type one-way clutch.

[0065] The first transmission assembly 7 is provided between the first shaft 31 and the two middle support plates 21, and is used to drive the middle support plates 21 to rotate outward and flatten as the back plate 3 rotates backward and flattens.

[0066] The second transmission assembly 8 is provided below the upper support plate 32 and is fixedly connected to the frame 1. It is used to drive the upper support plate 32 to rotate outward and flatten as the back plate 3 rotates backward and flattens.

[0067] The third transmission component 9 is provided between the first shaft 31 and the two support plates 4. It is used to drive the support plates 4 to rotate upward and flatten as the back plate 3 rotates backward and flattens.

[0068] In this embodiment, when the wheelchair bed of this application is used in the form of a wheelchair, the user sits on the seat 2 and drives the two wheels 11 to rotate through the drive component 6, thereby realizing the movement of the wheelchair and making driving convenient.

[0069] When converting the wheelchair to bed mode, the user moves the control handle 34 to unlock the seat gas spring 33 and leans back on the backrest 3. As the backrest 3 rotates, it drives the two middle support plates 21 to rotate outward and open and level through the first transmission component 7, drives the two upper support plates 32 to rotate outward and open and level through the second transmission component 8, and drives the two leg support plates 4 to rotate upward and level through the third transmission component 9. Then, the user releases the control handle 34 to lock the seat gas spring 33, completing the conversion from wheelchair mode to bed mode.

[0070] When converting from bed mode to wheelchair mode, the user sits up and moves the control handle 34 to unlock the seat gas spring 33. The seat gas spring 33 drives the back panel 3 to rotate upward and reset. Then, the user releases the control handle 34 to lock the seat gas spring 33, thus completing the conversion from bed mode to wheelchair mode.

[0071] The wheelchair bed of this application can quickly convert between wheelchair and bed modes without the need for electric equipment. It is easy to use, has low manufacturing cost, a wide audience, and good market prospects.

[0072] In a preferred embodiment, such as Figure 1 and Figure 3 As shown, the bottom of the middle support plate 21 is rotatably connected to the seat plate 2 via the third shaft 22;

[0073] A first torsion spring is provided on the third shaft 22, and a first limiting block 23 is fixedly provided on the outer side of the seat plate 2, located on the inner side of the middle support plate 21, to limit the middle support plate 21 so that it is in a vertical state when it is not subjected to external force.

[0074] A second limiting block 24 is fixedly installed on the outer side of the seat plate 2 below the middle support plate 21 to limit the middle support plate 21 so that its maximum outward rotation angle is 90 degrees.

[0075] In this embodiment, when the wheelchair bed is converted from a bed to a wheelchair, the middle support plate 21 rotates upward and resets under the elastic action of the first torsion spring, and stops rotating to a vertical state under the limiting action of the first limiting block 23.

[0076] After the middle support plate 21 rotates outward to a horizontal position, the second limiting block 24 supports it, preventing the middle support plate 21 from continuing to rotate and avoiding accidental falls caused by the user pressing on the middle support plate 21, thus ensuring high safety.

[0077] In a preferred embodiment, such as Figures 1-3 As shown, the first transmission assembly 7 includes a first vertical rod 71 and a second vertical rod 72;

[0078] The top end of the first vertical rod 71 is fixedly connected to the first shaft 31, and the bottom end is fixedly connected to the first horizontal rod 73, which is parallel to the first shaft 31.

[0079] The top of the second vertical rod 72 is fixedly connected to the bottom of the middle support plate 21 near the first shaft rod 31, and the bottom is fixedly connected to the second horizontal rod 74; the second vertical rod 72 is inclined at 5-10 degrees from top to bottom towards the seat plate 2, and the second horizontal rod 74 rests on the first horizontal rod 73.

[0080] In this embodiment, the first shaft 31 is fixedly connected to the back plate 3. When the back plate 3 rotates backward, it drives the first shaft 31 to rotate synchronously. The first shaft 31 drives the first vertical bar 71 to swing, and the first vertical bar 71 drives the first horizontal bar 73 to rotate and lift. The first horizontal bar 73 presses against the second horizontal bar 74. Since the second vertical bar 72 is tilted inward at a certain angle, the second horizontal bar 74 drives the bottom end of the second vertical bar 72 to swing inward. The second vertical bar 72 drives the middle support plate 21 to rotate outward with the third shaft 22 as the axis, thus realizing the linkage drive between the middle support plate 21 and the back plate 3 and improving the convenience of the wheelchair bed's form conversion.

[0081] In a preferred embodiment, such as Figures 1-3 As shown, one side of the upper support plate 32 is rotatably connected to the back plate 3 via the fourth shaft 35;

[0082] A second torsion spring is provided on the fourth shaft 35, and a third limiting block 36 is provided between one side of the back of the back plate 3 and the upper support plate 32 to limit the upper support plate 32 so that it forms an angle of 100-130 degrees with the back of the back plate 3 when it is not subjected to external force.

[0083] A fourth limiting block 37 is provided between one side of the front of the back plate 3 and the upper support plate 32, which is used to limit the upper support plate 32 to rotate outward to the maximum extent until it is on the same plane as the back plate 3; a folding support leg 38 is provided on the inner side of the upper support plate 32.

[0084] In this embodiment, when the wheelchair bed is converted from a bed to a wheelchair, under the elastic action of the second torsion spring, the upper support plate 32 rotates backward to reset, and under the limiting action of the third limiting block 36, the upper support plate 32 rotates to a state where it forms an angle of 100-130 degrees with the back of the back plate 3.

[0085] After the upper support plate 32 rotates outward until it is on the same plane as the back plate 3, the fourth limiting block 37 supports it, preventing the upper support plate 32 from continuing to rotate. This avoids the upper support plate 32 rotating too much and causing structural instability of the bed. At this time, the folding legs 38 are opened to support the bottom of the upper support plate 32, ensuring high safety.

[0086] In a preferred embodiment, such as Figures 1-3 As shown, the second transmission assembly 8 includes a bracket 81 and a contact block 82. A contact block 82 is provided below the upper support plate 32, and a bracket 81 is provided below the contact block 82. The bracket 81 is fixedly connected to the frame 1. The bottom of the contact block 82 is fixedly connected to the bracket 81 through a support column 83. The contact block 82 is spherical, and a support plane is provided on the top surface of the contact block 82.

[0087] In this embodiment, as the back panel 3 rotates backward and flattens, the upper support plate 32 rotates along with it. Because the upper support plate 32, under the action of the second torsion spring and the third limiting block 36, maintains a certain angle of outward opening without external force, as the upper support plate 32 rotates backward, its inclined bottom surface abuts against the bumper block 82. The bumper block 82 supports the upper support plate 32, causing it to rotate outward about the fourth shaft 35, thus realizing the linkage drive between the upper support plate 32 and the back panel 3, improving the convenience of wheelchair bed configuration changes.

[0088] During the process of the upper support plate 32 being rotated and opened by the contact block 82 supporting the upper support plate 32, relative friction is generated between the upper support plate 32 and the contact block 82. The spherical contact block 82 effectively reduces the friction and improves the smoothness of the rotation and opening of the upper support plate 32. After the upper support plate 32 is rotated and opened, it is supported by the support plane, which has a large support area and stable support.

[0089] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the third transmission assembly 9 includes a connecting rod 91;

[0090] The connecting rod 91 is located below the seat plate 2, between the first shaft 31 and the support plate 4; one end of the connecting rod 91 is provided with a crank 92, and the other end is provided with a first support rod 93 and a second support rod 94.

[0091] One end of the crank 92 is fixedly connected to the first shaft 31, and the other end is rotatably connected to the connecting rod 91; one end of the first support rod 93 is rotatably connected to the second shaft 41, and the other end is rotatably connected to the connecting rod 91; one end of the second support rod 94 is rotatably connected to the back of the support plate 4, and the other end is rotatably connected to the connecting rod 91.

[0092] In this embodiment, the first shaft 31 is fixedly connected to the back plate 3. When the back plate 3 rotates backward, it drives the first shaft 31 to rotate synchronously. The first shaft 31 drives the crank 92 to swing, and the crank 92 drives the connecting rod 91 to move forward. The connecting rod 91 pushes the first support rod 93 and the second support rod 94 to swing. The second support rod 94 pushes the leg support plate 4 to rotate upward about the second shaft 41 to the horizontal, realizing the linkage drive between the leg support plate 4 and the back plate 3, and improving the convenience of the wheelchair bed form conversion.

[0093] In a preferred embodiment, such as Figure 1 and Figure 4 As shown, the roller-type one-way clutch includes a housing 62 and a clutch disc 63;

[0094] The housing 62 is disposed on the outside of the wheel 11 and is fixedly sleeved with the axle 13;

[0095] The clutch plate 63 is disposed inside the housing 62 and is rotatably connected to the wheel axle 13 via the bearing 64; the outer periphery of the clutch plate 63 is evenly distributed with a number of one-way clutch grooves 65, and each one-way clutch groove 65 is provided with a roller 66.

[0096] A slot 67 is provided on one side of the clutch plate 63, and a clearance groove 68 is provided on the housing 62 at an angle above the front side of the clutch plate 63; the bottom end of the drive rocker 61 passes through the clearance groove 68 and can be detachably inserted into the slot 67.

[0097] In this embodiment, the gap between the one-way clutch groove 65 and the housing 62 gradually decreases clockwise. When the clutch plate 63 rotates counterclockwise, the roller 66 is locked between the clutch plate 63 and the housing 62. At this time, the clutch plate 63 and the housing 62 rotate synchronously, thereby driving the wheel axle 13 to rotate together through the housing 62. When the clutch plate 63 rotates clockwise, the roller 66 is at the highest point in the one-way clutch groove 65. At this time, the clutch plate 63 and the housing 62 rotate relative to each other, and the wheel 11 moves forward by inertia.

[0098] When the wheelchair is driven by the drive rocker 61, the two drive rockers 61 swing back and forth synchronously to move the wheelchair forward; pressing the two drive rockers 61 forward synchronously brakes the wheelchair; pressing one drive rocker 61 forward causes the other drive rocker 61 to swing back and forth, thus turning the wheelchair. The drive effect is good and the operation is convenient.

[0099] In a preferred embodiment, such as Figure 1 and Figure 3 As shown, the bottom end of the drive rocker 61 is provided with a plurality of positioning holes 69 at equal intervals along its length; the middle support plate 21 is provided with a mounting through groove 26 adapted to the bottom end of the drive rocker 61 along a direction perpendicular to the middle support plate 21; the top of the middle support plate 21 is provided with a through hole communicating with the mounting through groove 26, and the positioning pin can be detachably passed through the through hole and inserted into the mounting through groove 26.

[0100] The bottom end of the drive rocker 61 is provided with a plurality of positioning holes 69 at equal intervals along its length; the top end of the upper support plate 32 is provided with a mounting groove 38 adapted to the bottom end of the drive rocker 61 along a direction perpendicular to the upper support plate 32; a through hole 39 is provided on one side of the upper support plate 32 corresponding to the positioning holes 69, which connects to the mounting groove 38, and the positioning pin can be detachably passed through the through hole 39 and inserted into the mounting groove 38.

[0101] In this embodiment, when converting the wheelchair bed into its bed form, the drive rockers 61 on both sides are first pulled out; after the wheelchair bed is converted into a bed form, the positioning pin is pulled out; then the bottom end of the drive rocker 61 is passed through the mounting slot 26 from above, and the positioning pin is passed through the through hole and inserted into the positioning hole 69. At this time, the two drive rockers 61 serve as armrests to help the user get up.

[0102] The locating pins can be inserted into different locating holes 69 to adjust the height of the drive rocker 61 and install it into the mounting slot 26 to accommodate people of different heights and arm lengths, providing excellent adaptability.

[0103] In a preferred embodiment, such as Figure 1 , 2 As shown in Figures 3, 5, and 6, a slot 25 is provided on the seat plate 2, and a sliding plate mechanism 5 is provided on the frame 1 to block and open the slot 25;

[0104] The skateboard mechanism 5 includes a skateboard 51 that is separable from the bottom and embedded in a slot 25; symmetrical first slides 52 are provided on both sides below the skateboard 51, the front end of the first slides 52 is fixedly connected to the seat plate 2, and the rear end is open; a second slide 53 is provided on the back of the back plate 3 corresponding to the first slides 52, the top end of the second slide 53 is fixedly connected to the back plate 3, and the bottom end is open; after the back plate 3 is rotated backward and laid flat, the second slide 53 and the first slide 52 are connected to form a slide frame;

[0105] A first round rod 54 is rotatably mounted on the frame 1 below the first slide rail 52. A winding wheel 55 is fixedly sleeved on the first round rod 54. A handle sleeve 56 is mounted on the extended axis of the first round rod 54. The handle sleeve 56 is mounted on the frame 1 and can slide along its axis and rotate around its axis. An internal gear ring is fixedly mounted on one end of the first round rod 54 near the handle sleeve 56, and an external gear ring that matches the internal gear ring is fixedly mounted on one end of the handle sleeve 56. A first guide wheel 57 and a second guide wheel 58 are arranged side by side on the frame 1. A traction rope 59 is wound on the winding wheel 55. One end of the traction rope 59 is guided by the first guide wheel 57 and fixedly connected to the front end of the slide plate 51. The other end is guided by the second guide wheel 58 and fixedly connected to the rear end of the slide plate 51.

[0106] A second round rod 510 is rotatably arranged between the two first slide rails 52. A cam 511 is rotatably sleeved on the second round rod 510. A baffle 512 is fixedly arranged on the bottom surface of the slide plate 51 behind the cam 511 to drive the cam 511 to rotate so that it presses against the bottom surface of the slide plate 51.

[0107] In this embodiment, after the wheelchair bed is converted into a bed, the second slide rail 53 connects with the first slide rail 52 to form a slide rail frame, in which the slide plate 51 slides.

[0108] When a user needs to relieve themselves, the caregiver pushes the handle sleeve 56 inward, causing the outer gear ring on the handle sleeve 56 to insert into and mesh with the inner gear ring on the first round rod 54. Then, rotating the handle sleeve 56 drives the winding wheel 55 to rotate via the first round rod 54. The traction rope 59 on the winding wheel 55 is guided by the first guide wheel 57 and the second guide wheel 58, pulling the slide plate 51 to move. This allows the slide plate 51 to move from the slot 25 into the slide frame and move along the slide frame, thereby opening the slot 25 to facilitate the user's urination or defecation. Alternatively, the slide plate 511 can move from the slide frame into the slot 25. When entering the slot, the baffle 512 at the rear end of the slide plate 51 actuates the cam 511, causing the cam 511 to rotate and stand upright to support the slide plate 51. When the slide plate 51 falls, it drives the cam 511 to rotate and fall, allowing the slide plate 51 to move within the slide frame.

[0109] In another embodiment, a limiting structure is provided in the cam 511 to limit the rotation angle of the cam 511, so that it can only rotate within a certain range of angles; the cam 511 can rotate upward to the maximum extent to stand upright against the slide plate 51, and rotate backward to the maximum extent to not affect the sliding of the slide plate 51; this increases the stability of the cam 511 during operation, so as to better cooperate with the baffle 512 to complete the work.

[0110] In a preferred embodiment, such as Figure 1 and Figure 2As shown, a headrest 39 is fixedly installed on the top of the back panel 3, which improves the comfort of the user when resting; handles 310 are symmetrically fixedly connected to the top of the back panel 3 on both sides of the headrest 39, which facilitates pushing the wheelchair.

[0111] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0112] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0113] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wheelchair bed that is easy to transform, characterized in that, include: The frame (1) has wheels (11) symmetrically arranged on both sides of its bottom rear end and casters (12) symmetrically arranged on both sides of its bottom front end. The seat plate (2) is fixedly installed on the top surface of the frame (1), and the middle support plate (21) is symmetrically rotatably connected on both sides. The back plate (3) is rotatably connected to the rear end of the seat plate (2) via a first shaft (31) at its bottom, and upper support plates (32) are symmetrically rotatably connected on both sides. The first shaft (31) is fixedly connected to the back plate (3), and a seat gas spring (33) is fixedly installed between the back plate (3) and the seat plate (2). The control handle (34) of the seat gas spring (33) is fixedly set on one side of the seat plate (2). Leg support plate (4), the front end of the seat plate (2) is rotatably connected to two leg support plates (4) via a second shaft (41), and the bottom end of the leg support plate (4) is fixedly connected to a foot pedal (42); The drive assembly (6), which is connected to the wheel (11) in a transmission, includes a roller one-way clutch mounted on the wheel axle (13) of the wheel (11) and a separable drive rocker (61) inserted into the roller one-way clutch. The first transmission assembly (7) is provided between the first shaft (31) and the two middle support plates (21), and is used to drive the middle support plates (21) to rotate outward and flatten as the back plate (3) rotates backward and flattenes. The second transmission assembly (8) is provided below the upper support plate (32) and is fixedly connected to the frame (1). It is used to drive the upper support plate (32) to rotate outward and flatten as the back plate (3) rotates backward and flattenes. The third transmission component (9) is provided between the first shaft (31) and the two support plates (4), and is used to drive the support plates (4) to rotate upward and flatten as the back plate (3) rotates backward and flattenes.

2. The wheelchair bed with easy form conversion according to claim 1, characterized in that, The bottom of the middle support plate (21) is rotatably connected to the seat plate (2) via a third shaft (22); A first torsion spring is provided on the third shaft (22), and a first limiting block (23) is fixedly provided on the outer side of the seat plate (2) located on the inner side of the middle support plate (21) to limit the middle support plate (21) so that it is in a vertical state when it is not subjected to external force. A second limiting block (24) is fixedly installed on the outer side of the seat plate (2) below the middle support plate (21) to limit the middle support plate (21) so that its maximum rotation angle to the outside is 90 degrees.

3. The wheelchair bed with easy form conversion according to claim 2, characterized in that, The first transmission assembly (7) includes a first vertical rod (71) and a second vertical rod (72); The top end of the first vertical rod (71) is fixedly connected to the first shaft (31), and the bottom end is fixedly connected to a first horizontal rod (73) parallel to the first shaft (31); The top end of the second vertical rod (72) is fixedly connected to the bottom end of the middle support plate (21) near the first shaft (31), and the bottom end is fixedly connected to the second horizontal rod (74); the second vertical rod (72) is inclined at 5-10 degrees from top to bottom towards the seat plate (2), and the second horizontal rod (74) rests on the first horizontal rod (73).

4. The wheelchair bed with easy form conversion according to claim 1, characterized in that, One side of the upper support plate (32) is rotatably connected to the back plate (3) via the fourth shaft (35); A second torsion spring is provided on the fourth shaft (35), and a third limiting block (36) is provided between one side of the back of the back plate (3) and the upper support plate (32) for limiting the upper support plate (32) so that it forms an angle of 100-130 degrees with the back of the back plate (3) when it is not subjected to external force. A fourth limiting block (37) is provided between one side of the front of the back plate (3) and the upper support plate (32) to limit the upper support plate (32) so that it can rotate outward to the maximum extent until it is in the same plane as the back plate (3); a folding support leg (38) is provided on the inner side of the upper support plate (32).

5. The wheelchair bed with easy form conversion according to claim 4, characterized in that, The second transmission component (8) includes a bracket (81) and a bumper (82). The bumper (82) is provided below the upper support plate (32), and the bracket (81) is provided below the bumper (82). The bracket (81) is fixedly connected to the frame (1). The bottom of the bumper (82) is fixedly connected to the bracket (81) through a support column (83). The bumper (82) is spherical, and the top surface of the bumper (82) is provided with a support plane.

6. The wheelchair bed with easy form conversion according to claim 1, characterized in that, The third transmission assembly (9) includes a connecting rod (91); The connecting rod (91) is located below the seat plate (2) and between the first shaft (31) and the leg plate (4); one end of the connecting rod (91) is provided with a crank (92), and the other end is provided with a first support rod (93) and a second support rod (94); One end of the crank (92) is fixedly connected to the first shaft (31), and the other end is rotatably connected to the connecting rod (91); one end of the first support rod (93) is rotatably connected to the second shaft (41), and the other end is rotatably connected to the connecting rod (91); one end of the second support rod (94) is rotatably connected to the back of the leg plate (4), and the other end is rotatably connected to the connecting rod (91).

7. The wheelchair bed with easy form conversion according to claim 1, characterized in that, The roller-type one-way clutch includes a housing (62) and a clutch disc (63); The housing (62) is disposed on the outside of the wheel (11) and is fixedly sleeved with the axle (13); The clutch plate (63) is disposed inside the housing (62) and is rotatably connected to the wheel axle (13) via a bearing (64); the outer periphery of the clutch plate (63) is evenly distributed with a plurality of one-way clutch grooves (65), and each one-way clutch groove (65) is provided with a roller (66); A slot (67) is provided on one side of the clutch plate (63), and a clearance groove (68) is provided on the housing (62) at an angle above the front side of the clutch plate (63); the bottom end of the drive rocker (61) passes through the clearance groove (68) and can be detachably inserted into the slot (67).

8. The wheelchair bed with easy form conversion according to claim 7, characterized in that, The bottom end of the drive rocker (61) is provided with a plurality of positioning holes (69) at equal intervals along its length; the middle support plate (21) is provided with a mounting through groove (26) adapted to the bottom end of the drive rocker (61) along a direction perpendicular to the middle support plate (21); the top of the middle support plate (21) is provided with a through hole communicating with the mounting through groove (26), and the positioning pin can be detachably passed through the through hole and inserted into the mounting through groove (26).

9. The wheelchair bed with easy form conversion according to claim 1, characterized in that, The seat plate (2) is provided with a slot (25), and the frame (1) is provided with a sliding plate mechanism (5) that can block and open the slot (25); The skateboard mechanism (5) includes a skateboard (51) that is separable from the bottom and embedded in the slot (25); the skateboard (51) has two symmetrical first slides (52) on its lower sides, the front end of the first slides (52) being fixedly connected to the seat plate (2) and the rear end being open; the back of the back plate (3) is provided with a second slide (53) corresponding to the first slides (52), the top end of the second slide (53) being fixedly connected to the back plate (3) and the bottom end being open; after the back plate (3) is rotated backward and laid flat, the second slide (53) and the first slide (52) are connected to form a slide frame; A first round rod (54) is rotatably mounted on the frame (1) below the first slide rail (52), and a winding wheel (55) is fixedly sleeved on the first round rod (54); a handle sleeve (56) is provided on the extended axis of the first round rod (54), and the handle sleeve (56) is mounted on the frame (1) so as to slide along its axis and rotate around its axis; an internal gear ring is fixedly provided at one end of the first round rod (54) near the handle sleeve (56), and an external gear ring adapted to the internal gear ring is fixedly provided at one end of the handle sleeve (56); a first guide wheel (57) and a second guide wheel (58) are arranged side by side on the frame (1), and a traction rope (59) is wound on the winding wheel (55). One end of the traction rope (59) is guided by the first guide wheel (57) and fixedly connected to the front end of the slide plate (51), and the other end is guided by the second guide wheel (58) and fixedly connected to the rear end of the slide plate (51); A second round rod (510) is rotatably disposed between the two first slide rails (52). A cam (511) is rotatably sleeved on the second round rod (510). A baffle (512) is fixedly disposed behind the cam (511) on the bottom surface of the slide plate (51) to drive the cam (511) to rotate so that it presses against the bottom surface of the slide plate (51).

10. The wheelchair bed with easy form conversion according to claim 1, characterized in that, A headrest (310) is fixedly installed on the top of the back panel (3); handles (311) are symmetrically fixedly connected to the top of the back panel (3) on both sides of the headrest (310).

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