Swivel assembly and medical bed

Abstract

The application relates to a swing assembly and a medical bed. The swing assembly comprises a swing base, a fixed base, a driving support and a driving part. The swing base is surrounded by a containing cavity. The fixed base is arranged in the containing cavity; the swing base and the fixed base are connected, and the swing base can rotate relative to the fixed base around a swing axis; the swing axis extends along a first direction. The driving support is arranged on one side of the swing base away from the containing cavity along the first direction; the driving support comprises a moving end and a pivot end distributed along a second direction; the pivot end is pivotally connected with the swing base; the first direction is different from the second direction. The driving part is arranged on the driving support and comprises a lead screw; the lead screw is arranged close to the moving end; a driving axis of the lead screw extends along the second direction; the lead screw is matched with the fixed base; the driving axis and the swing axis do not intersect.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to a swivel assembly and a medical bed. Background Technology

[0002] In the use of medical beds, such as vascular beds, patients need to lie on the bed while being imaged by medical instruments. The relative position between the patient and the medical instruments may need to be adjusted when imaging is performed in different body positions. Therefore, the medical bed needs to accommodate various imaging postures.

[0003] Some medical beds require the ability to change the angle of the bed board relative to the ground, allowing the body to tilt, for example, to the left or right, thus meeting the imaging needs of medical instruments. However, current tilting structures of this type require a large amount of height space, resulting in a relatively high initial height for the medical bed. Utility Model Content

[0004] This application provides a swinging component and a medical bed to address some or all of the shortcomings of the related technologies.

[0005] The first aspect of this application provides a swinging component, comprising: The swing seat is arranged to form a receiving cavity; A fixed seat is disposed in the accommodating cavity; the swing seat is connected to the fixed seat, and the swing seat is rotatable relative to the fixed seat about a swing axis; the swing axis extends along a first direction; A drive bracket is disposed along the first direction on the side of the swing seat away from the receiving cavity; the drive bracket includes a movable end and a pivot end distributed along a second direction; the pivot end is pivotally connected to the swing seat; the first direction is distinct from the second direction; and, A drive unit is disposed on the drive bracket and includes a lead screw; the lead screw is disposed near the moving end; the drive axis of the lead screw extends along the second direction; the lead screw cooperates with the fixed base; the drive axis and the swing axis do not intersect.

[0006] Furthermore, the drive unit includes a motor and a transmission unit; the output axis of the motor extends along the second direction and is not collinear with the drive axis; the transmission unit includes a meshing drive gear and a driven gear; the motor is connected to the drive gear and drives the drive gear to rotate; the driven gear is connected to the lead screw and drives the lead screw to rotate.

[0007] Furthermore, the accommodating cavity extends through the swing seat along a third direction; the motor and the lead screw are arranged along the third direction; the third direction is distinct from the first direction and the second direction.

[0008] Furthermore, the swing seat includes an upper surface and a lower surface disposed opposite to each other along the third direction; in the third direction, the motor is disposed between the upper surface and the lower surface; The lead screw is disposed on the side of the upper surface away from the lower surface; or, the lead screw is disposed on the side of the lower surface away from the upper surface.

[0009] Furthermore, the oscillating assembly also includes a position counter; the position counter includes a potentiometer, a first rotating wheel, a second rotating wheel, and a belt; the first rotating wheel is connected to and driven by the driven gear; the belt connects the first rotating wheel and the second rotating wheel to drive the second rotating wheel to rotate; the potentiometer is rotatably connected to the second rotating wheel; the diameter of the second rotating wheel is larger than the diameter of the first rotating wheel.

[0010] Furthermore, the fixing base includes a main body unit, a connecting unit, and a mating unit; the main body unit is disposed in the accommodating cavity; one end of the connecting unit is fixedly connected to the main body unit along the swing axis; the end of the connecting unit away from the main body unit is provided with a connecting hole extending along the first direction; one end of the mating unit is disposed in the connecting hole and is rotatably connected to the connecting unit; the end of the mating unit away from the connecting hole is sleeved on the lead screw and mats with the lead screw.

[0011] Furthermore, the swing assembly includes a pivot shaft; the fixed base includes a first pivot hole; the first pivot hole passes through the connecting unit and the main body unit along the swing axis; the swing base includes a second pivot hole arranged along the swing axis; the pivot shaft passes through the first pivot hole and the second pivot hole; the pivot shaft is fixedly connected to the fixed base and pivotally connected to the swing base.

[0012] Furthermore, the main body unit includes a first fixed wall and a second fixed wall disposed opposite to each other in the first direction; the first pivot hole penetrates the first fixed wall and the second fixed wall; the swing seat includes a first swing wall and a second swing wall disposed opposite to each other in the first direction; the second pivot hole penetrates the first swing wall and the second swing wall; The rotating shaft includes two shafts; one shaft is disposed between the first fixed wall and the first swing wall, and the other shaft is disposed between the second fixed wall and the second swing wall.

[0013] Furthermore, the swing assembly also includes a first bearing; the inner ring of the first bearing is sleeved on the rotating shaft, and the outer ring is connected to the swing seat.

[0014] Furthermore, the swing assembly also includes a second bearing; the inner ring of the second bearing is sleeved on the mating unit, and the outer ring is disposed in the connecting hole.

[0015] A second aspect of this application provides a medical bed, including a bed board, a base, and the swing assembly described in the foregoing embodiments; the bed board is connected to the swing seat; and the base is connected to the fixed seat.

[0016] The technical solutions provided by the embodiments of this application may include the following beneficial effects: As can be seen from the above embodiments, the fixed seat of the swing assembly of this application is disposed within the receiving cavity of the swing seat, and the drive bracket and drive unit are disposed on the side of the swing seat away from the receiving cavity. Therefore, these components have overlapping projections in the first direction, which is beneficial for making full use of the space in the first direction. At the same time, the drive shaft extends along the second direction, which can also reduce the space occupied in the first direction compared to the embodiment that drives the swing seat directly along the first direction. In addition, compared with the rotation drive scheme of worm gear, the screw requires less space in the third direction, thereby further allowing for volume optimization of the swing assembly in the third direction.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The diagram shows an overall schematic representation of one embodiment of the swing component of this application; Figure 2 Shown as Figure 1 A schematic diagram of the oscillating component from another angle; Figure 3 Shown as Figure 1 A top view of the swing assembly shown; Figure 4 Shown as Figure 1 The side view of the swing assembly shown is as follows. Figure 4 Part of the structure is Figure 3 A partial cross-section at the BB position; Figure 5 Shown as Figure 3 The diagram shows a cross-sectional view of position AA.

[0020] Explanation of reference numerals in the attached figures: 100 Swing assembly, 1 Swing seat, 11 Accommodating cavity, 12 Upper surface, 13 Lower surface, 14 Second pivot hole, 15 First swing wall, 16 Second swing wall, 2 Fixed seat, 21 Main body unit, 211 First fixed wall, 212 Second fixed wall, 22 Connecting unit, 221 Connecting hole, 23 Mating unit, 231 Mating body, 232 Threaded part, 24 First pivot hole, 3 Drive bracket, 31 Moving end, 32 Pivot end, 4 Drive unit, 41 Lead screw, 42 Motor, 43 Transmission unit, 431 Driving gear, 432 Driven gear, 5 Positioning unit, 51 Potentiometer, 52 First rotating wheel, 53 Second rotating wheel, 54 Belt, 6 Rotating shaft, 7 First bearing, 8 Second bearing, X First direction, Y Second direction, Z Third direction, SA Swing axis, DA Drive axis, OA Output axis. Detailed Implementation

[0021] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0022] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms 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 indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0023] This application provides a medical bed. The medical bed includes a bed board, a base, and a swivel assembly. (Reference) Figures 1 to 4 The swing assembly 100 of this application includes a swing seat 1 and a fixed seat 2. The swing seat 1 surrounds and forms a receiving cavity 11. The fixed seat 2 is disposed in the receiving cavity 11. The swing seat 1 and the fixed seat 2 are connected, and the swing seat 1 is rotatable relative to the fixed seat 2 about a swing axis SA. The swing axis SA extends along a first direction X. When the swing assembly 100 is connected to a bed board and a base, the bed board is connected to the swing seat 1, and the base is connected to the fixed seat 2. The base is used to be placed on the ground, so the base is a fixed structure, and correspondingly, the fixed seat 2 is also a fixed structure.

[0024] The swing seat 1 includes an upper surface 12 and a lower surface 13 disposed opposite each other along a third direction Z. When the swing seat 1 is assembled with the bed board, the upper surface 12 is connected to the bed board. The third direction Z can be understood as the height direction of the medical bed during use. Then the first direction X and the second direction Y can be understood as directions parallel to the ground. When the swing seat 1 rotates around the swing axis SA, the bed board can swing relative to the ground, thereby changing the angle between the bed board and the ground. When the swing axis SA extends along the length direction of the bed board, the bed board can swing left and right. When the swing axis SA extends along the width direction of the bed board, the bed board can swing up and down. Those skilled in the art can set the extension direction of the swing axis SA according to the swing direction requirements of the medical bed.

[0025] To drive the swing of the swing seat 1, the swing assembly 100 of this application further includes a drive bracket 3 and a drive unit 4. The drive bracket 3 is disposed along a first direction X on the side of the swing seat 1 away from the receiving cavity 11. The drive bracket 3 includes a movable end 31 and a pivot end 32 distributed along a second direction Y. The pivot end 32 is pivotally connected to the swing seat 1. The drive unit 4 is disposed on the drive bracket 3 and includes a lead screw 41. The lead screw 41 is disposed near the movable end 31 and cooperates with the fixed seat 2. The drive axis DA of the lead screw 41 extends along the second direction Y and does not intersect with the swing axis SA.

[0026] The movable end 31 and the pivot end 32 are distributed along the second direction Y, and the drive axis DA of the lead screw 41 is also distributed along the second direction Y. When the lead screw 41 rotates, the lead screw 41 and the fixed seat 2 tend to move relative to each other along the second direction Y. Since the fixed seat 2 is a fixed structure and its position does not change, only the lead screw 41 can change its position. The lead screw 41 is mounted on the drive bracket 3, and the pivot end 32 of the drive bracket 3 is pivotally connected to the swing seat 1. The swing seat 1 is pivotally connected to the fixed seat 2. Therefore, the drive bracket 3 cannot actually translate in the second direction Y. At this time, there is a force between the lead screw 41 and the fixed seat 2 due to the tendency to move relative to each other. The drive axis DA of the lead screw 41 and the swing axis SA do not intersect, which is shown in the figure as a gap between the drive axis DA and the swing axis SA in the third direction Z. Therefore, this force can form a torque at the swing axis SA, so that the lead screw 41 can drive the swing seat 1 to rotate around the swing axis SA through the pivot end 32 of the drive bracket 3.

[0027] The fixed base 2 of the swing assembly in this application is disposed within the receiving cavity 11 of the swing seat 1, and the drive bracket 3 and drive unit 4 are disposed on the side of the swing seat 1 away from the receiving cavity 11. Therefore, these components have overlapping projections in the first direction X, which is beneficial for making full use of the space in the first direction X. At the same time, the drive axis DA extends along the second direction Y, which can also reduce the space occupied in the first direction X compared to the embodiment that drives the swing seat 1 directly along the first direction X. In addition, compared with the rotation drive scheme of worm gear, the lead screw 41 requires less space in the third direction Z, thereby further allowing for volume optimization of the swing assembly in the third direction Z.

[0028] The fixed base 2, swing base 1, and drive bracket 3 of the swing assembly of this application are arranged along the first direction X, thus reducing the space requirements in the third direction Z when assembled on a medical bed. In this way, the distance between the bed board and the ground in the third direction Z can be controlled, thereby reducing the initial height of the bed board, which in turn allows patients of small stature to get on and off the bed board, or makes it easier for medical staff to lift patients onto the bed board.

[0029] It should be noted that the connection between the bed board and the swing seat 1 can be direct or indirect. In an indirect connection embodiment, other structures can be provided between the bed board and the swing seat 1 to allow the bed board to move or rotate in other directions. Similarly, the connection between the base and the fixed seat 2 can be direct or indirect. In an indirect connection embodiment, a lifting assembly can be provided between the base and the fixed seat 2 to achieve the position of the swing assembly and the bed board in the third direction Z. This application is not limited in this respect.

[0030] For illustrative purposes, this application uses a first direction X, a second direction Y, and a third direction Z as reference directions. The first direction X, the second direction Y, and the third direction Z are shown as being perpendicular to each other in the accompanying drawings, but this should be considered exemplary and not restrictive. The first direction X, the second direction Y, and the third direction Z only need to have angular differences between each other.

[0031] refer to Figure 1 and Figure 4In an optional embodiment, the drive unit 4 includes a motor 42 and a transmission unit 43. The output axis OA of the motor 42 extends along the second direction Y and is not collinear with the drive axis DA. The transmission unit 43 includes a meshing drive gear 431 and a driven gear 432. The motor 42 is connected to the drive gear 431 and drives the drive gear 431 to rotate. The driven gear 432 is connected to the lead screw 41 and drives the lead screw 41 to rotate. Compared to the scheme where the motor 42 is directly connected to the lead screw 41 to drive the lead screw 41, the drive unit 4 of this embodiment can reduce the space requirement of the swing assembly 100 in the second direction Y and optimize the overall volume of the swing assembly 100. In addition, the gear transmission of the transmission unit 43 has high precision, so it can accurately control the angle of rotation of the swing seat 1 around the swing axis SA. At the same time, the gear transmission has strong load-bearing capacity and can carry out normal transmission work when a patient is on the bed, thereby ensuring the working reliability of the swing assembly.

[0032] The output axis OA and drive axis DA can be arranged along the first direction X, thereby utilizing the space in the first direction X to arrange the drive unit 4 and drive bracket 3. In some optional embodiments, the receiving cavity 11 extends through the swing seat 1 along the third direction Z. The motor 42 and lead screw 41 are arranged along the third direction Z. As mentioned above, the arrangement of the transmission unit 43 optimizes the dimensions of the swing assembly 100 in the second direction Y. This embodiment can further optimize the dimensions of the swing assembly 100 in the first direction X, thereby improving the overall structural compactness of the swing assembly 100.

[0033] Furthermore, in the third direction Z, the motor 42 is positioned between the upper surface 12 and the lower surface 13. The lead screw 41 is positioned on the side of the upper surface 12 away from the lower surface 13. Alternatively, the lead screw 41 is positioned on the side of the lower surface 13 away from the upper surface 12. The upper surface 12 and lower surface 13 of the swing seat 1 should be understood as the surfaces where their ends are located in the third direction Z. Since the swing seat 1 and the fixed seat 2 are pivotally connected, the swing axis SA is located between the upper surface 12 and the lower surface 13. The arrangement of the lead screw 41 in this embodiment ensures that the drive axis DA of the lead screw 41 and the swing axis SA are not collinear, allowing the swing assembly to smoothly rotate around the swing axis SA. The motor 42 only needs to act as a power source to output torque along the output axis OA; therefore, there is no necessary positional relationship between it and the swing axis SA. The motor 42 is positioned between the upper surface 12 and the lower surface 13, which can further ensure the overlap of the projections of the drive unit 4, the swing seat 1 and the fixed seat 2 in the first direction X, thereby helping to optimize the volume of the swing assembly in the third direction Z and further ensuring the minimum initial height of the medical bed.

[0034] refer to Figure 1In an optional embodiment, the oscillating assembly 100 further includes a timing unit 5. The timing unit 5 includes a potentiometer 51, a first rotating wheel 52, a second rotating wheel 53, and a belt 54. The first rotating wheel 52 is connected to and driven by a driven gear 432. The belt 54 connects the first rotating wheel 52 and the second rotating wheel 53 to drive the second rotating wheel 53 to rotate. The potentiometer 51 is rotatably connected to the second rotating wheel 53. The driven gear 432 is connected to a lead screw 41 to drive the rotation of the lead screw 41. Since the first rotating wheel 52 is also driven by the driven gear 432, the rotation angle of the first rotating wheel 52 is the same as the rotation angle of the lead screw 41. The belt 54 connects the first rotating wheel 52 and the second rotating wheel 53, so when the first rotating wheel 52 rotates, it drives the second rotating wheel 53 to rotate via the belt 54, thereby transmitting the rotation parameters of the lead screw 41 to the potentiometer 51 for recording. The diameter of the second rotating wheel 53 is larger than that of the first rotating wheel 52. Therefore, the second rotating wheel 53 can reduce speed, making its operation more stable and thus making the data obtained by the potentiometer 51 more accurate.

[0035] The torque of the motor 42 is transmitted to the lead screw 41 through the transmission unit 43. Compared with the potentiometer 51 being directly connected to the drive shaft of the motor 42 to calculate the rotation parameters of the drive shaft, the potentiometer 51 of this application is used to measure the rotation parameters of the lead screw 41, thereby ensuring that the parameters measured by the potentiometer 51 are the actual output parameters of the drive unit 4, and thus ensuring the measurement accuracy of the potentiometer 51.

[0036] In an optional embodiment, the second rotating wheel 53 is positioned close to the drive gear 431, which increases the overlap of the projections of the transmission unit 43 and the counting unit 5 in the direction perpendicular to the second direction Y, thereby optimizing the overall volume of the swing assembly 100 and reducing space occupation.

[0037] refer to Figure 1 , Figure 2 and Figure 5 In an optional embodiment, the fixing base 2 includes a main body unit 21, a connecting unit 22, and a mating unit 23. The main body unit 21 is disposed in the accommodating cavity 11. One end of the connecting unit 22 is fixedly connected to the main body unit 21 along the swing axis SA, and the end of the connecting unit 22 away from the main body unit 21 is provided with a connecting hole 221 extending along the first direction X. One end of the mating unit 23 is disposed in the connecting hole 221 and is rotatably connected to the connecting unit 22. The end of the mating unit 23 away from the connecting hole 221 is sleeved on the lead screw 41 and mats with the lead screw 41.

[0038] When the lead screw 41 rotates around the drive axis DA, the lead screw 41 and the mating unit 23 tend to move relative to each other. As mentioned above, this tendency to move is switched to the rotation of the drive bracket 3, the drive part 4, and the swing seat 1 around the swing axis SA. At this time, the lead screw 41 drives the mating unit 23 to rotate relative to the connecting unit 22. Compared with the embodiment where the fixed seat 2 is integrally formed, since the extension directions of the drive axis DA and the swing axis SA of this application are different, the arrangement of the mating unit 23 and the connecting unit 22 can reduce the requirement for the mating accuracy of the lead screw 41 and the fixed seat 2 in the first direction X. Figure 5 As shown, when the mating unit 23 is fitted onto the lead screw 41, the position of the mating unit 23 within the connecting hole 221 of the connecting unit 22 can be changed. This avoids the problem that insufficient dimensional accuracy of the fixed seat 2 and the drive bracket 3 in the first direction X would prevent the lead screw 41 from being inserted into the fixed seat 2 for mating. Furthermore, by connecting the main body unit 21 and the mating unit 23 through the connecting unit 22, the fixed seat 2 can be divided into multiple different parts for processing, reducing the accuracy requirements and processing difficulty during the manufacturing process.

[0039] The mating unit 23 can be directly machined with threads that mate with the lead screw 41. Or, as... Figure 4 As shown, the mating unit 23 may include a mating body 231 and a threaded component 232. The threaded component 232 is disposed in the mating body 231 and fixedly connected to the mating body 231. The threaded component 232 mates with the lead screw 41. The end of the mating body 231 away from the threaded component 232 is inserted into the connecting hole 221. During rotation, the lead screw 41 mates with the threaded component 232, causing the lead screw 41 to tend to move in the second direction Y. The threaded component 232 then drives the mating body 231 to rotate relative to the connecting unit 22. This arrangement makes the threaded component 232 replaceable. After prolonged use of the swing assembly 100, maintenance personnel can replace the threaded component 232 to improve the transmission accuracy of the lead screw 41. Alternatively, maintenance personnel can select the corresponding threaded component 232 based on the parameters of the subsequently selected lead screw 41 without replacing the entire mating unit 23, thereby reducing subsequent maintenance costs.

[0040] refer to Figure 5To reduce friction between the mating unit 23 and the connecting unit 22 during relative rotation, the swing assembly 100 also includes a second bearing 8. The inner ring of the second bearing 8 is fitted onto the mating unit 23, and the outer ring is disposed in the connecting hole 221. The second bearing 8 improves the rotational accuracy of the mating unit 23 within the connecting hole 221 and reduces the coefficient of friction during relative rotation. After prolonged use of the swing assembly 100, maintenance personnel can replace the second bearing 8 to ensure the normal operation of the mating unit 23. Compared to a scheme where the mating unit 23 and the connecting hole 221 directly contact and rub against each other, this embodiment effectively avoids material fatigue in the mating unit 23 after prolonged friction, thereby ensuring the service life of the fixed seat 2.

[0041] In some alternative embodiments, the swing assembly 100 includes a pivot 6. The fixed base 2 includes a first pivot hole 24. The first pivot hole 24 passes through the connecting unit 22 and the main body unit 21 along the swing axis SA. The swing base 1 includes a second pivot hole 14 disposed along the swing axis SA. The pivot 6 passes through the first pivot hole 24 and the second pivot hole 14. The pivot 6 is fixedly connected to the fixed base 2 and pivotally connected to the swing base 1. Compared to embodiments where the swing base 1 and the fixed base 2 are connected by protrusions and recesses, the pivot 6 reduces the assembly difficulty of the swing base 1 and the fixed base 2. When assembling the fixed base 2 and the swing base 1, the assembler only needs to align the first pivot hole 24 and the second pivot hole 14 before inserting the pivot 6.

[0042] Furthermore, since the swing seat 1 needs to bear the weight of the bed board and the patient, a large shear force will be generated at the pivot connection between the swing seat 1 and the fixed seat 2. The swing assembly 100 is equipped with a separate rotating shaft 6 as a rotating component, allowing designers to select a material with higher strength than that of the swing seat 1 and the fixed seat 2 as the material of the rotating shaft 6 based on the load during the operation of the swing seat 1, thereby improving the service life of the swing assembly 100. The rotating shaft 6 and the first pivot hole 24 can be fixed by means of direct interference fit, connection through flexible components such as sealing rings, etc.

[0043] Theoretically, the pendulum assembly 100 only needs to be rotatably connected to the fixed base 2 and the swing base 1 on one side in the first direction X. However, in order to improve the pendulum stability and structural strength of the pendulum assembly 100, such as... Figure 5As shown, in some optional embodiments, the main body unit 21 includes a first fixed wall 211 and a second fixed wall 212 disposed opposite to each other in the first direction X. A first pivot hole 24 passes through the first fixed wall 211 and the second fixed wall 212. The swing seat 1 includes a first swing wall 15 and a second swing wall 16 disposed opposite to each other in the first direction X. A second pivot hole 14 passes through the first swing wall 15 and the second swing wall 16. The rotating shaft 6 includes two shafts. One rotating shaft 6 is disposed between the first fixed wall 211 and the first swing wall 15, and the other is disposed between the second fixed wall 212 and the second swing wall 16.

[0044] With this configuration, the fixed base 2 and the swing base 1 can be rotatably connected on both sides in the first direction X, thereby extending the working length of the swing axis SA and improving the rotational stability and structural strength of the swing assembly 100. In the embodiment shown in the figures, the connecting unit 22 is located on one side of the second fixed wall 212, such that the driving part 4 and the driving bracket 3 are located on the side of the second swing wall 16 away from the receiving cavity 11. However, this should be taken as an example and not as a limitation. The connecting unit 22 may also be located on one side of the first fixed wall 211, such that the driving part 4 and the driving bracket 3 are located on one side of the first swing wall 15. This application is not limited in this respect.

[0045] Optionally, the swing assembly 100 further includes a first bearing 7. The inner ring of the first bearing 7 is fitted onto the rotating shaft 6, and the outer ring is connected to the swing seat 1. The first bearing 7 reduces the coefficient of friction between the swing seat 1 and the rotating shaft 6, and also provides some support for the swing seat 1, thereby improving the overall fitting accuracy of the swing assembly. In embodiments where the rotating shaft 6 includes only one shaft, i.e., where the first pivot hole 24 and the second pivot hole 14 are only provided on one side of the fixed seat 2 and the swing seat 1 in the first direction X, there is only one first bearing 7. In embodiments where the rotating shaft 6 includes two shafts, i.e., where the first pivot hole 24 and the second pivot hole 14 pass through the fixed seat 2 and the swing seat 1 entirely in the first direction X, there are two first bearings 7.

[0046] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A swinging component, characterized in that, include: A swing seat (1) is provided to form a receiving cavity (11); A fixing seat (2) is disposed in the receiving cavity (11); The swing seat (1) and the fixed seat (2) are connected, and the swing seat (1) is rotatable relative to the fixed seat (2) about the swing axis (SA); the swing axis (SA) extends along a first direction (X); A drive bracket (3) is disposed along the first direction (X) on the side of the swing seat (1) away from the receiving cavity (11); the drive bracket (3) includes a movable end (31) and a pivot end (32) distributed along the second direction (Y); the pivot end (32) is pivotally connected to the swing seat (1); the first direction (X) is distinct from the second direction (Y); and, A drive unit (4) is disposed on the drive bracket (3) and includes a lead screw (41); the lead screw (41) is disposed near the moving end (31); the drive axis (DA) of the lead screw (41) extends along the second direction (Y); the lead screw (41) cooperates with the fixed seat (2); the drive axis (DA) and the swing axis (SA) do not intersect.

2. The swing assembly according to claim 1, characterized in that, The drive unit (4) includes a motor (42) and a transmission unit (43); the output axis (OA) of the motor (42) extends along the second direction (Y) and is not collinear with the drive axis (DA); the transmission unit (43) includes a meshing drive gear (431) and a driven gear (432); the motor (42) is connected to the drive gear (431) and drives the drive gear (431) to rotate; the driven gear (432) is connected to the lead screw (41) and drives the lead screw (41) to rotate.

3. The swing assembly according to claim 2, characterized in that, The accommodating cavity (11) extends through the swing seat (1) along a third direction (Z); the motor (42) and the lead screw (41) are arranged along the third direction (Z); the third direction (Z) is different from the first direction (X) and the second direction (Y).

4. The swing assembly according to claim 3, characterized in that, The swing seat (1) includes an upper surface (12) and a lower surface (13) disposed opposite to each other along the third direction (Z); in the third direction (Z), the motor (42) is disposed between the upper surface (12) and the lower surface (13); The lead screw (41) is disposed on the side of the upper surface (12) away from the lower surface (13); or, the lead screw (41) is disposed on the side of the lower surface (13) away from the upper surface (12).

5. The swing assembly according to claim 2, characterized in that, The swing assembly (100) further includes a counting unit (5); the counting unit (5) includes a potentiometer (51), a first rotating wheel (52), a second rotating wheel (53), and a belt (54); the first rotating wheel (52) is connected to and driven by the driven gear (432); the belt (54) connects the first rotating wheel (52) and the second rotating wheel (53) to drive the second rotating wheel (53) to rotate; the potentiometer (51) is rotatably connected to the second rotating wheel (53); the diameter of the second rotating wheel (53) is larger than the diameter of the first rotating wheel (52).

6. The swing assembly according to claim 1, characterized in that, The fixed base (2) includes a main body unit (21), a connecting unit (22), and a mating unit (23); the main body unit (21) is disposed in the accommodating cavity (11); one end of the connecting unit (22) is fixedly connected to the main body unit (21) along the swing axis (SA); the end of the connecting unit (22) away from the main body unit (21) is provided with a connecting hole (221) extending along the first direction (X); one end of the mating unit (23) is disposed in the connecting hole (221) and is rotatably connected to the connecting unit (22); the end of the mating unit (23) away from the connecting hole (221) is sleeved on the lead screw (41) and mats with the lead screw (41).

7. The swing assembly according to claim 6, characterized in that, The swing assembly (100) includes a pivot (6); the fixed base (2) includes a first pivot hole (24); the first pivot hole (24) passes through the connecting unit (22) and the main body unit (21) along the swing axis (SA); the swing base (1) includes a second pivot hole (14) arranged along the swing axis (SA); the pivot (6) passes through the first pivot hole (24) and the second pivot hole (14); the pivot (6) is fixedly connected to the fixed base (2) and pivotally connected to the swing base (1).

8. The swing assembly according to claim 7, characterized in that, The main body unit (21) includes a first fixed wall (211) and a second fixed wall (212) arranged opposite to each other in the first direction (X); the first pivot hole (24) passes through the first fixed wall (211) and the second fixed wall (212); the swing seat (1) includes a first swing wall (15) and a second swing wall (16) arranged opposite to each other in the first direction (X); the second pivot hole (14) passes through the first swing wall (15) and the second swing wall (16); The rotating shaft (6) includes two shafts; one shaft (6) is disposed on the first fixed wall (211) and the first swing wall (15), and the other shaft is disposed on the second fixed wall (212) and the second swing wall (16).

9. The swing assembly according to claim 7 or 8, characterized in that, The swing assembly (100) further includes a first bearing (7); the inner ring of the first bearing (7) is sleeved on the rotating shaft (6), and the outer ring is connected to the swing seat (1).

10. The swing assembly according to claim 6, characterized in that, The swing assembly (100) further includes a second bearing (8); the inner ring of the second bearing (8) is sleeved on the mating unit (23), and the outer ring is disposed in the connecting hole (221).

11. A medical bed, characterized in that, It includes a bed board, a base, and a swing assembly (100) as described in any one of claims 1-10; the bed board is connected to the swing seat (1); and the base is connected to the fixed seat (2).

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