Postoperative patient transfer bed
By designing a tiltable patient transport bed and straps, the problem of inconvenient postoperative patient transfer was solved, achieving a safe and efficient transport process and reducing the workload of medical staff.
Patent Information
- Application Number
- CN202422920656.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The existing patient transport bed is inconvenient to operate after surgery, especially when the patient is heavy, requiring multiple people to lift the patient, which increases the labor intensity of medical staff and poses a risk of secondary injury.
A postoperative patient transfer bed was designed, which uses a bed board and a bed side frame that are hinged together. The bed board is tilted or leveled by a tilting drive frame. Combined with the patient being secured by straps, the patient can be smoothly transferred from the transfer bed to the hospital bed.
This reduces the difficulty of patient transfer procedures, avoids secondary injuries, reduces the workload of medical staff, and improves transfer efficiency.
Smart Images
Figure CN223542086U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of postoperative patient transfer equipment, specifically to a postoperative patient transfer bed. Background Technology
[0002] Currently, all patients require transfer to their wards via transport bed after surgery. These transport beds are fixed flat panels. After the patient returns to the ward via the transport bed, four medical staff typically need to lift the patient by the four corners of the bed sheet and transfer them to the ward bed. Therefore, transferring postoperative patients from the transport bed to the ward is very inconvenient, especially when the patient is heavy, increasing the difficulty and workload for medical staff. Errors in this process can also cause secondary injury to the postoperative patient, increasing their suffering. Utility Model Content
[0003] In order to overcome the shortcomings of the prior art, this utility model discloses a postoperative patient transfer bed to solve the operational difficulties of transferring postoperative patients from the transfer bed to the hospital bed and reduce the labor intensity of medical staff.
[0004] To achieve the aforementioned purpose, this utility model adopts the following technical solution: a postoperative patient transfer bed, comprising a bed frame, a bed board, and a tilting drive frame; the bed frame includes a bed base frame and a bed side frame, with the bed side frame fixedly installed on one side of the upper part of the bed base frame; the bed board is hinged to the bed side frame, and the bed board and bed side frame are driven to be connected by the tilting drive frame; during the transfer of the postoperative patient, the bed board is in a horizontal state, and the height of the bed board is 15-30cm higher than the height of the hospital bed; when transferring the postoperative patient to the hospital bed, the bed board is adjusted to an inclined state by the tilting drive frame and aligned with the edge of the hospital bed, and medical staff transfer the postoperative patient to the hospital bed by pulling the bed sheet under the postoperative patient.
[0005] Furthermore, the tilt drive has one or more units.
[0006] Furthermore, the bed board includes a bed board body, which is an arc-shaped board with an edge trim around its perimeter; several bed board reinforcing ribs are fixedly installed at the bottom of the bed board body, and a bed board hinge seat is fixedly installed on one side edge trim of the bed board body, which is hinged to the bed side frame.
[0007] Furthermore, push handles are fixedly installed at one or both ends of the upper part of the bed board.
[0008] Furthermore, the tilt drive frame includes four support links, which are hinged together to form a parallel four-bar structure; one hinge point is provided with a bed bottom hinge seat, and the opposite hinge point is provided with a bed side frame hinge seat; a screw rod is provided through the other two hinge points, one end of the screw rod is an axially fixed end, and a crank A is hinged to the axially fixed end; the hinge point of the adjacent crank A is provided with a bed board side hinge seat; the bed bottom hinge seat is hinged to the bed board reinforcing rib, the bed side frame hinge seat is fixedly connected to the bed side frame, and the bed board side hinge seat is fixedly connected to one side edge of the bed board body.
[0009] Preferably, a tilting rocker arm is rotatably mounted on the bed base frame, and a worm gear sleeve is provided on the tilting rocker arm; the tilting drive frame includes four support rods, which are hinged together to form a parallel four-bar linkage structure; one hinge point is provided with a bed base hinge seat, and a bed side frame hinge seat is provided opposite to the other hinge point; a screw rod is provided through between the other two hinge points, one end of the screw rod is an axially fixed end, the hinge point of the axially fixed end is provided with a bed board side hinge seat, and the other end away from the axially fixed end is fixedly provided with a worm gear; wherein the bed base hinge seat is hinged to the bed board reinforcing rib, wherein the bed side frame hinge seat is fixedly connected to the bed side frame, and wherein the bed board side hinge seat is fixedly connected to one side edge of the bed board body; the worm gear sleeve on the tilting rocker arm is engaged with the worm gear on the screw rod.
[0010] Furthermore, it also includes strapping; one end of the strapping is connected to the bed board, and the other end is movably connected to the bed side frame.
[0011] Preferably, the strapping is divided into two sections, one section is connected to the bed board and the other section is connected to the bed side frame, and the two sections of strapping are connected by buckles or Velcro.
[0012] Furthermore, the lower part of the bed frame is equipped with casters.
[0013] Due to the adoption of the above-described technical solution, this utility model has the following beneficial effects: The postoperative patient transfer bed disclosed in this utility model includes a bed frame, a bed board, and a tilting drive frame. The bed board is rotatably connected to the bed frame through the tilting drive frame. During the transfer of the postoperative patient, the bed board is adjusted to a horizontal state through the tilting drive frame, and a sheet (or mattress) is laid on the bed board. The postoperative patient lies flat on the sheet (or mattress). When transferring the postoperative patient to the hospital bed, the bed board is adjusted to an inclined state through the tilting drive frame, and the outer side of the bed board is aligned with the edge of the hospital bed. Medical staff can transfer the postoperative patient to the hospital bed by pulling the sheet (or mattress) under the patient. This greatly reduces the difficulty of transferring the postoperative patient from the transfer bed to the hospital bed, avoids secondary injury to the patient caused by errors during the operation, and reduces the labor intensity of medical staff. Attached Figure Description
[0014] Figure 1This is a schematic diagram of the appearance of the postoperative patient transport bed in Example 1. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the appearance of the postoperative patient transport bed in Example 1. Figure 2 ;
[0016] Figure 3 This is a schematic diagram of the bed frame appearance in Example 1;
[0017] Figure 4 This is a schematic diagram of the bed board appearance in Example 1. Figure 1 ;
[0018] Figure 5 This is a schematic diagram of the bed board appearance in Example 1. Figure 2 ;
[0019] Figure 6 This is a schematic diagram of the tilt drive frame in Embodiment 1;
[0020] Figure 7 This is a schematic diagram of the appearance of the cable ties;
[0021] Figure 8 This is a schematic diagram of the appearance of the postoperative patient transport bed in Example 2. Figure 1 ;
[0022] Figure 9 This is a schematic diagram of the appearance of the postoperative patient transport bed in Example 2. Figure 2 ;
[0023] Figure 10 This is a schematic diagram of the bed frame appearance in Example 2;
[0024] Figure 11 This is a schematic diagram of the bed board appearance in Example 2;
[0025] Figure 12 This is a schematic diagram of the tilt drive frame in Embodiment 2;
[0026] Figure 13 This is a schematic diagram of the appearance of the postoperative patient transport bed in Example 3;
[0027] Figure 14 A diagram illustrating the movement of a postoperative patient from the operating table to the transport bed. Figure 1 ;
[0028] Figure 15 A diagram illustrating the movement of a postoperative patient from the operating table to the transport bed. Figure 2 ;
[0029] Figure 16 A schematic diagram showing the transfer of postoperative patients via a transport bed;
[0030] Figure 17This is a diagram illustrating the movement of a postoperative patient from the transport bed to the hospital bed.
[0031] In the diagram: 1. Bed frame; 1.1. Bed base frame; 1.1.1. Tilting rocker arm connecting frame; 1.1.2. Screw auxiliary support frame; 1.2. Bed side frame; 1.3. Bed frame hinge seat; 2. Bed board; 2.1. Bed board body; 2.2. Bed board reinforcing rib; 2.3. Bed board hinge seat; 2.4. Strapping strap groove; 2.5. Push handle; 3. Tilting drive frame; 3.1. Bracket connecting rod; 3.2. Bed base hinge seat; 3. 3. Bed side frame hinge seat; 3.4. Bed board side hinge seat; 3.5. Screw; 3.6. Handle A; 3.7. Worm gear; 4. Casters; 5. Cable ties; 5.1. Cable tie body; 5.2. Anti-detachment clip; 5.3. Hook; 5.4. Fastener; 6. Tilting rocker arm; 6.1. Rocker arm body; 6.2. Worm gear sleeve; 6.3. Handle B; 7. Operating table; 8. Bed sheet; 9. Patient; 10. Hospital bed. Detailed Implementation
[0032] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.
[0033] Example 1, see appendix to the instruction manual. Figure 1-7 :
[0034] See the instruction manual appendix Figure 1 , 2 A postoperative patient transfer bed, comprising a bed frame 1, a bed board 2, a tilt drive frame 3, casters 4, and strapping straps 5;
[0035] See the instruction manual appendix Figure 3 The bed frame 1 includes a bed base frame 1.1 and a bed side frame 1.2. The bed side frame 1.2 is fixedly installed on the upper part of one side of the bed base frame 1.1. Four casters 4 are provided and installed on the lower part of the bed base frame 1.1. The casters 4 are equipped with foot brake devices. The bed side frame 1.2 is provided with a longitudinal reinforcing column. The side of the longitudinal reinforcing column facing the bed base frame 1.1 is provided with a bed frame hinge seat 1.3. The bed frame hinge seat 1.3 is provided with a hinge hole, or the hinge hole is directly provided on the longitudinal reinforcing column. When the hinge hole is provided on the longitudinal reinforcing column, it is not necessary to provide a bed frame hinge seat 1.3.
[0036] See the instruction manual appendix Figure 4 , 5The bed board 2 includes a bed board body 2.1, which is made of stainless steel plate with a thickness of 0.8-1.0mm, bent into an arc shape. The edges of the bed board body 2.1 are bend-finished to prevent sharp edges from causing injury. Four 1.2mm thick reinforcing ribs 2.2 are fixedly installed at the bottom of the bed board body 2.1 to reinforce its strength. The two middle adjacent reinforcing ribs 2.2 are positioned opposite to the tilt drive frame 3. The bed board body 2.1 is provided with hinge holes; a bed board hinge seat 2.3 is fixedly installed on the edge of one side of the bed board body 2.1, and the bed board hinge seat 2.3 is provided with hinge holes. The bed board hinge seat 2.3 is hinged to the bed frame hinge seat 1.3 (or the hinge holes directly provided on the longitudinal reinforcing column); the other side of the bed board body 2.1 away from the bed board hinge seat 2.3 is provided with two strapping grooves 2.4. The strapping grooves 2.4 are provided on the bed board body 2.1, or on the edge of the bed board body 2.1.
[0037] See the instruction manual appendix Figure 6 The tilt drive frame 3 includes four support links 3.1, which are hinged together to form a parallel four-bar linkage structure, i.e., a mechanical jack structure. One hinge point is provided with a bed bottom hinge seat 3.2, and the opposite hinge point is provided with a bed side frame hinge seat 3.3. A screw 3.5 runs through the other two hinge points. One end of the screw 3.5 is an axially fixed end, and a crank A3.6 is hinged to the axially fixed end. The hinge point of the adjacent crank A3.6 is provided with a bed board side hinge seat 3.4. When the crank A3.6 is turned clockwise, the bed bottom hinge seat 3.2 and the bed side frame hinge seat 3.3 will move closer to each other. When the crank A3.6 is turned counterclockwise, the bed bottom hinge seat 3.2 and the bed side frame hinge seat 3.3 will move away from each other.
[0038] See the instruction manual appendix Figure 2 In this embodiment, the bed board 2 and the bed side frame 1.2 are driven to be connected by a tilting drive frame 3. The specific connection structure is as follows: the bed bottom hinge seat 3.2 is hinged to the bed board reinforcing rib 2.2, the bed side frame hinge seat 3.3 is welded and fixedly connected to the bed side frame 1.2, and the bed board side hinge seat 3.4 is welded (or bolted) and fixedly connected to one side of the bed board body 2.1.
[0039] See the instruction manual appendix Figure 7 The strapping 5 includes a strapping body 5.1, an anti-detachment clip 5.2, and a hook 5.3. The strapping body 5.1 is a flexible fiber braided strap, while the anti-detachment clip 5.2 and the hook 5.3 are both made of metal and are fixedly installed at both ends of the strapping body 5.1. There are two strapping 5s. The strapping body 5.1 passes through the strapping groove 2.4, and the anti-detachment clip 5.2 is installed at the lower part of the bed board body 2.1 to prevent the strapping 5 from falling off. The hook 5.3 at the other end can be hung on the bed side frame 1.2 when needed and is movably connected to the bed side frame 1.2.
[0040] When using the postoperative patient transfer bed, turning the crank handle A3.6 causes the parallel four-bar linkage structure to deform, increasing or decreasing the distance between the bed bottom hinge seat 3.2 and the bed side frame hinge seat 3.3. This drives the bed board 2 to rotate around the hinge axis of the bed board side hinge seat 3.4 and the hinge axis of the bed board hinge seat 2.3 (the hinge axis of the bed board side hinge seat 3.4 and the hinge axis of the bed board hinge seat 2.3 are coaxial), thus achieving the tilting or leveling adjustment of the bed board 2. When the bed board 2 is in a horizontal state, its outer edge height is 15cm higher than the height of the bed.
[0041] The procedure for using the postoperative patient transport bed is as follows; please refer to the instruction manual. Figure 14 This diagram shows the postoperative patient being transferred from the operating table 7 to the transport bed. At this point, the bed board 2 is leveled by turning the rocker lever A3.6 clockwise; the height of the operating table 7 is adjusted so that it is the same height as the outer edge of the bed board 2; the transport bed is moved until the outer edge of the bed board 2 is in contact with the side of the operating table 7; the casters are locked using the foot brake; and the bed sheet 8 under the patient is pulled to transfer the postoperative patient to the transport bed. (See the instruction manual appendix.) Figure 15 Another way to transfer the patient from the operating table 7 to the transfer bed is as follows: Adjust the bed board 2 to a tilted position by rotating the rocker A3.6 counterclockwise; adjust the height of the operating table 7 so that its height is the same as the outer side of the bed board 2; move the transfer bed so that the outer side of the bed board 2 touches the side of the operating table 7; lock the casters using the foot brake device; pull the sheet 8 under the patient to transfer the postoperative patient to the bed board 2; after the postoperative patient is transferred to the bed board 2, rotate the rocker A3.6 clockwise to adjust the bed board 2 to a horizontal position.
[0042] See the instruction manual appendix Figure 16 During patient transport, hook 5.3 of the strapping 5 should be attached to the bedside frame 1.2 to prevent the patient from falling; see the instruction manual appendix. Figure 17After the patient arrives at the ward, the transfer bed is placed on the side of bed 10. Hook 5.3 is removed, and the rocker handle A3.6 is turned counterclockwise to adjust the bed board 2 to an inclined position until the outer height of the bed board 2 is the same as the height of bed 10. During the process of adjusting the bed board 2 from a horizontal to an inclined position, the postoperative patient will slide laterally along the curved bed board 2. However, because the bed board 2 is a curved board structure, the sliding stops when the postoperative patient slides to the lowest point of the curved bed board 2. With the assistance of medical staff, the patient is prevented from falling off the bed board 2. When the outer height of the bed board 2 is the same as the height of bed 10, the outer side of the bed board 2 is brought into contact with the side of bed 10. The casters are locked by the foot brake device, and the bed sheet 8 under the patient is pulled to transfer the postoperative patient to bed 10. During the use of the postoperative patient transfer bed, there is no need for medical staff to lift and move the patient. Therefore, the operation difficulty of transferring the postoperative patient from the transfer bed to the bed is greatly reduced, avoiding secondary injury to the patient caused by errors in the operation, and also significantly reducing the labor intensity of medical staff.
[0043] Example 2, see appendix to the instruction manual. Figure 8-12 :
[0044] See the instruction manual appendix Figure 8 , 9 In this embodiment, two tilt drive frames 3 are provided to increase the support strength of the bed board 2. The structure of the tilt drive frame 3 is also changed accordingly, and a tilt rocker 6 is added to drive the two tilt drive frames 3 at the same time.
[0045] See the instruction manual appendix Figure 10 Compared to the bed frame 1 in Embodiment 1, the upper part of both ends of the bed base frame 1.1 is equipped with tilt rocker connecting frames 1.1.1 for supporting the rotation of the tilt rocker 6. Additionally, screw auxiliary support frames 1.1.2 are added near the upper parts of both ends of the bed base frame 1.1, with screw auxiliary support holes provided on the screw auxiliary support frames 1.1.2. The tilt rocker 6 includes a rocker body 6.1, a worm gear sleeve 6.2, and a crank handle B6.3. The rocker body 6.1 is rod-shaped, and two worm gear sleeves 6.2 are fixedly connected to the rocker body 6.1. The crank handle B6.3 is fixedly mounted on one end of the rocker body 6.1. The tilt rocker 6 is rotatably mounted on the tilt rocker connecting frame 1.1.1.
[0046] See the instruction manual appendix Figure 11 In this implementation, six bed board reinforcing ribs 2.2 with a thickness of 1.0 mm are fixedly installed at the bottom of the bed board body 2.1 to reinforce the strength of the bed board body 2.1. Among them, the two pairs of bed board reinforcing ribs 2.2 corresponding to the two tilting drive frames 3 are provided with hinge holes.
[0047] See the instruction manual appendix Figure 12The tilt drive frame 3 includes four support links 3.1, which are hinged together to form a parallel four-bar linkage structure. One hinge point is provided with a bed bottom hinge seat 3.2, and the opposite hinge point is provided with a bed side frame hinge seat 3.3. A screw 3.5 runs through the other two hinge points. One end of the screw 3.5 is an axially fixed end, and the hinge point of the axially fixed end is provided with a bed board side hinge seat 3.4. The other end away from the axially fixed end is fixed with a worm gear 3.7. The bed bottom hinge seat 3.2 is also provided with a bed bottom hinge seat 3.3. 2. The bed board is hinged to the reinforcing rib 2.2, wherein the bed side frame hinge seat 3.3 is fixedly connected to the bed side frame 1.2, and the bed board side hinge seat 3.4 is fixedly connected to one side edge of the bed board body 2.1; the screw 3.5 is provided with an extension section at one end of the worm gear 3.7, which is rotatably set in the screw auxiliary support hole of the screw auxiliary support frame 1.1.2 to reinforce the strength of the screw 3.5 and prevent it from bending during operation; the worm sleeve 6.2 on the tilting rocker 6 is meshed with the worm gear 3.7 on the screw 3.5;
[0048] In this embodiment, when the postoperative patient transfer bed is in use, rotating the tilt rocker 6 engages with the worm gear 3.7 through the worm sleeve 6.2, driving the screw 3.5 to rotate. The rotation of the screw 3.5 drives the parallel four-bar linkage structure to deform, causing the distance between the bed bottom hinge seat 3.2 and the bed side frame hinge seat 3.3 to increase or decrease. This drives the bed board 2 to rotate around the hinge axis of the bed board side hinge seat 3.4 and the hinge axis of the bed board hinge seat 2.3 (the hinge axis of the bed board side hinge seat 3.4 and the hinge axis of the bed board hinge seat 2.3 are coaxially set), thereby realizing the tilting or leveling adjustment of the bed board 2.
[0049] Example 3, see appendix to the instruction manual. Figure 13 :
[0050] Based on Embodiment 1, this embodiment adds push handles 2.5 fixed at both ends of the upper part of the bed board 2. The push handles 2.5 have two functions: first, to facilitate pushing the postoperative patient transfer bed; second, to prevent the postoperative patient from slipping off the bed board 2 when the patient transfer bed encounters an uphill or downhill slope during movement. In addition, this embodiment divides the straps 5 into two sections, one section is connected to the bed board 2, and the other section is connected to the bed side frame 1.2. The two sections of straps 5 are connected by buckles 5.4. Preferably, the two sections of straps 5 can also be connected by Velcro to accommodate patients of different body types.
[0051] The postoperative patient transfer bed usage process in Examples 2 and 3 is the same as in Example 1, and will not be repeated here; however, Example 2 is equipped with two tilt drive frames 3, so the bed board 2 has higher support strength and is more stable during use.
[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, it should be understood that this utility model is intended to protect all changes and improvements of the embodiments that fall within the scope of this concept and utility model.
[0053] The parts of this utility model not described in detail are existing technologies.
Claims
1. A postoperative patient transfer bed, characterized in that: The bed includes a bed frame (1), a bed board (2), and a tilting drive frame (3). The bed frame (1) includes a bed base frame (1.1) and a bed side frame (1.2). The bed side frame (1.2) is fixedly installed on the upper side of the bed base frame (1.1). The bed board (2) is hinged to the bed side frame (1.2). The bed board (2) and the bed side frame (1.2) are connected by a tilting drive frame (3). During the transfer of postoperative patients, the bed board (2) is in a horizontal state and the height of the bed board (2) is 15-30cm higher than the height of the bed. When the postoperative patient is transferred to the bed, the bed board (2) is adjusted to a tilted state by the tilting drive frame (3) and aligned with the edge of the bed. Medical staff can transfer the postoperative patient to the bed by pulling the bed sheet under the patient.
2. The postoperative patient transport bed according to claim 1, characterized in that: The tilt drive frame (3) has one or more.
3. The postoperative patient transfer bed according to claim 1, characterized in that: The bed board (2) includes a bed board body (2.1), which is an arc-shaped board with a edging around its perimeter; a number of bed board reinforcing ribs (2.2) are fixedly provided at the bottom of the bed board body (2.1), and a bed board hinge seat (2.3) is fixedly provided on one side edging of the bed board body (2.1), which is hinged to the bed side frame (1.2).
4. The postoperative patient transfer bed according to claim 3, characterized in that: Push handles (2.5) are fixedly installed at one or both ends of the upper part of the bed board (2).
5. The postoperative patient transport bed according to claim 1, 3, or 4, characterized in that: The tilt drive frame (3) includes four support links (3.1), which are hinged together to form a parallel four-bar structure. One of the hinge points is provided with a bed bottom hinge seat (3.2), and the opposite hinge point is provided with a bed side frame hinge seat (3.3). A screw (3.5) is provided between the other two hinge points. One end of the screw (3.5) is an axial fixed end, and a crank A (3.6) is hinged to the axial fixed end. The hinge point of the adjacent crank A (3.6) is provided with a bed board side hinge seat (3.4). The bed bottom hinge seat (3.2) is hinged to the bed board reinforcing rib (2.2), the bed side frame hinge seat (3.3) is fixedly connected to the bed side frame (1.2), and the bed board side hinge seat (3.4) is fixedly connected to one side edge of the bed board body (2.1).
6. The postoperative patient transport bed according to claim 1, 3, or 4, characterized in that: A tilting rocker arm (6) is rotatably mounted on the bed base frame (1.1), and a worm gear sleeve (6.2) is mounted on the tilting rocker arm (6). The tilting drive frame (3) includes four support rods (3.1), which are hinged together to form a parallel four-bar linkage. One of the hinge points is provided with a bed base hinge seat (3.2), and the opposite hinge point is provided with a bed side frame hinge seat (3.3). A screw rod (3.5) is provided between the other two hinge points. One end of the screw rod (3.5) is an axially fixed end. The hinge point at the fixed end is provided with a bed board side hinge seat (3.4), and the other end away from the axial fixed end is fixedly provided with a worm gear (3.7); wherein the bed bottom hinge seat (3.2) is hinged to the bed board reinforcing rib (2.2), wherein the bed side frame hinge seat (3.3) is fixedly connected to the bed side frame (1.2), wherein the bed board side hinge seat (3.4) is fixedly connected to one side edge of the bed board body (2.1); the worm gear sleeve (6.2) on the tilt rocker (6) is meshed with the worm gear (3.7) on the screw (3.5).
7. The postoperative patient transport bed according to claim 1, characterized in that: It also includes a strapping band (5); one end of the strapping band (5) is connected to the bed board (2), and the other end is movably connected to the bed side frame (1.2).
8. The postoperative patient transport bed according to claim 7, characterized in that: The binding strap (5) is divided into two sections. One section is connected to the bed board (2), and the other section is connected to the bed side frame (1.2). The two sections of binding strap (5) are connected by buckles (5.4) or Velcro.
9. The postoperative patient transfer bed according to claim 1, characterized in that: The bed frame (1.1) is equipped with casters (4) at the bottom.