Movement mechanism and sickbed

Abstract

The utility model relates to a movement mechanism and a sickbed. The movement mechanism comprises a driving assembly, a transmission assembly and a permanent magnet clutch. The permanent magnet clutch is connected to the driving assembly, the permanent magnet clutch, the transmission assembly and the driving assembly are arranged in the first direction, and the first direction is perpendicular to the moving direction of the transmission assembly. Compared with an arrangement structure of a transmission assembly, a safety clutch and a driving assembly of an existing movement mechanism, the permanent magnet clutch, the transmission assembly and the driving assembly are arranged in the first direction, and the arrangement mode of the permanent magnet clutch, the transmission assembly and the driving assembly is set according to the size of the movement mechanism in the first direction; related structures arranged in the moving direction of the transmission assembly are reduced, and then the size of the movement mechanism is reduced.

Description

Technical Field

[0001] This application relates to the field of medical technology, and in particular to a sports device and a hospital bed. Background Technology

[0002] A CT bed is a type of hospital bed specifically designed for CT scans. A CT bed includes a connected motion mechanism and a bed board. The motion mechanism enables the bed board to move horizontally. In related technologies, the motion mechanism includes a transmission assembly and a safety clutch. The safety clutch's function is to disengage the horizontal movement of the bed board from the transmission assembly in special circumstances, ensuring that the bed board can be manually pushed to safely remove the patient from the CT gantry.

[0003] In this field, safety clutches typically use electromagnetic clutches. The working principle of an electromagnetic clutch is that it engages when energized and disengages when de-energized. That is, it needs to be energized to engage when the bed board is moving. In this scenario, the electromagnetic clutch becomes a heat source that can reach temperatures above 70°C for extended periods, creating unnecessary power demands and posing safety hazards. Utility Model Content

[0004] Therefore, it is necessary to provide a motion mechanism to address the problem of bed board movement.

[0005] A motion mechanism, the motion mechanism comprising:

[0006] Driver components;

[0007] Transmission components;

[0008] A permanent magnet clutch is connected to the drive assembly, and the permanent magnet clutch, the transmission assembly, and the drive assembly are arranged along a first direction, wherein the first direction is perpendicular to the movement direction of the transmission assembly.

[0009] The aforementioned motion mechanism connects a permanent magnet clutch to the drive assembly. When the permanent magnet clutch is de-energized, it engages with the transmission assembly, thus entering the working state. In this state, the transmission assembly moves the bed board. When the permanent magnet clutch is energized, it disengages from the transmission assembly, creating a gap between them, thus disengaging the working state. In this state, the bed board cannot be moved by the drive assembly or transmission assembly. Furthermore, compared to the existing motion mechanisms with their transmission assembly, safety clutch, and drive assembly arrangements, the permanent magnet clutch, transmission assembly, and drive assembly in this application are arranged along a first direction. Utilizing the dimensions of the motion mechanism along this first direction, the arrangement of the permanent magnet clutch, transmission assembly, and drive assembly reduces the need for related structures along the movement direction of the transmission assembly, thereby reducing the overall size of the motion mechanism. Additionally, the permanent magnet clutch operates by engaging when de-energized and disengaging when energized. When applied to a CT scan bed, the bed board remains in the de-energized engaged state in most usage scenarios, reducing power requirements and operating temperature, and avoiding safety hazards.

[0010] In one embodiment, the permanent magnet clutch includes a magnet and a flange, the magnet being connected to the drive assembly and the flange being connected to the transmission assembly.

[0011] In one embodiment, the permanent magnet clutch further includes an output shaft, one end of which is connected to the magnet, and the other end of which passes through the flange and is connected to the drive assembly.

[0012] In one embodiment, the output shaft passes sequentially through the flange and the drive wheel of the transmission assembly and is connected to the drive assembly. A limiting boss is provided on the output shaft, and the limiting boss can abut against the drive wheel.

[0013] In one embodiment, the transmission assembly includes a drive wheel, the flange and the magnet are located on the same side of the drive wheel, and the flange and the drive assembly are respectively disposed on both sides of the drive wheel, and the axial direction of the output shaft is parallel to the first direction.

[0014] In one embodiment, the permanent magnet clutch further includes a bearing, through which the output shaft rotatably engages with the flange.

[0015] In one embodiment, the drive assembly includes a drive source and a gearbox connected to the drive source, with one end of the output shaft away from the magnet connected to the gearbox.

[0016] In one embodiment, the transmission assembly includes a drive wheel, and the flange and the drive wheel are integrally machined.

[0017] This application also provides a hospital bed, including a bed board and the motion mechanism described in any of the above claims, wherein the bed board is connected to the transmission assembly.

[0018] In one embodiment, the motion mechanism is disposed below the bed board, and the permanent magnet clutch is disposed between the bed board and the transmission assembly. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a hospital bed provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the permanent magnet clutch provided in an embodiment of this application.

[0021] In the picture:

[0022] 100. Drive assembly; 110. Drive source; 120. Gearbox;

[0023] 200. Transmission assembly; 210. Drive pulley; 220. Belt; 230. Driven pulley;

[0024] 300, Permanent magnet clutch; 310, Magnet; 320, Flange; 330, Output shaft; 331, Limiting boss; 340, Bearing;

[0025] 400. Connection components;

[0026] 500. Bed board. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] This application provides a motion mechanism, such as Figure 1 and Figure 2 As shown, the motion mechanism includes a drive assembly 100, a transmission assembly 200, and a permanent magnet clutch 300; the permanent magnet clutch 300 is connected to the drive assembly 100, and the permanent magnet clutch 300, the transmission assembly 200, and the drive assembly 100 are arranged along a first direction, wherein the first direction is perpendicular to the movement direction of the transmission assembly 200.

[0034] In the aforementioned motion mechanism, a permanent magnet clutch 300 is connected to the drive assembly 100. When the permanent magnet clutch 300 is de-energized, it engages with the transmission assembly 200, thus entering the working state. At this time, the transmission assembly 200 drives the bed plate 500 to move. When the permanent magnet clutch 300 is energized, it disengages from the transmission assembly 200, creating a gap between them, thus disengaging from the working state. In this case, the bed plate 500 cannot be driven to move by the drive assembly 100 and the transmission assembly 200. Moreover, compared to the existing arrangement of the transmission assembly, safety clutch, and drive assembly in motion mechanisms, the permanent magnet clutch 300, transmission assembly 200, and drive assembly 100 in this application are arranged along a first direction. By utilizing the dimensions of the motion mechanism along the first direction to set the arrangement of the permanent magnet clutch 300, transmission assembly 200, and drive assembly 100, the arrangement of related structures in the moving direction of the transmission assembly 200 is reduced, thereby reducing the volume of the motion mechanism. In addition, the working principle of the permanent magnet clutch 300 is to engage when the power is off and disengage when the power is on. When the motion mechanism is applied to a hospital bed, the bed board 500 is in the working state of being engaged when the power is off in most usage scenarios, without the need for long-term power supply, which reduces power demand and operating temperature and avoids safety hazards.

[0035] It should be noted that when the permanent magnet clutch 300 is energized, although the bed plate 500 cannot be moved by the drive assembly 100 and the transmission assembly 200, it can still be moved by an external force pushing the bed plate 500.

[0036] Specifically, such as Figure 1As shown, the transmission assembly 200 includes a drive pulley 210, a belt 220, and a driven pulley 230. The driven pulley 230 and the drive pulley 210 are connected by the belt 220, which is connected to the bed board 500. The rotation of the drive pulley 210 and the driven pulley 230 drives the belt 220 to move, which in turn drives the bed board 500 to move. Figure 1 From this perspective, belt 220 drives bed board 500 to move horizontally.

[0037] More specifically, such as Figure 1 As shown, the permanent magnet clutch 300, the drive wheel 210, and the drive assembly 100 are arranged along the first direction.

[0038] More specifically, such as Figure 1 As shown, it also includes a connecting component 400, through which the belt 220 is connected to the bed board 500.

[0039] It should be noted that, as Figure 1 As shown, the first direction is perpendicular to the moving direction of the transmission assembly 200, that is, the first direction is the arrangement direction of the transmission assembly 200 and the bed board 500, that is, in Figure 1 From this perspective, the permanent magnet clutch 300, the drive wheel 210, and the drive assembly 100 are arranged vertically.

[0040] In some embodiments, as Figure 1 and Figure 2 As shown, the permanent magnet clutch 300 includes a magnet 310 and a flange 320. The magnet 310 is connected to the drive assembly 100, and the flange 320 is connected to the transmission assembly 200. The magnet 310 is connected to the drive assembly 100, and the flange 320 is connected to the drive wheel 210 of the transmission assembly 200. When the permanent magnet clutch 300 is de-energized, the magnet 310 attracts the flange 320 of the transmission assembly 200. At this time, the permanent magnet clutch 300, the flange 320, and the drive assembly 100 are connected as a whole. The drive assembly 100 rotates via the magnet 310, which in turn drives the flange 320 and the drive wheel 210 to rotate. The rotation of the drive wheel 210 then drives the belt 220 to move, thereby allowing the bed board 500 to move.

[0041] In this embodiment, if Figure 1 and Figure 2 As shown, flange 320 and drive wheel 210 are machined as a single piece. Machining flange 320 and drive wheel 210 as a single piece reduces machining and installation steps.

[0042] In other embodiments, the flange 320 and the drive wheel 210 are connected by a connecting structure, such as a screw.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the permanent magnet clutch 300 also includes an output shaft 330. One end of the output shaft 330 is connected to the magnet 310, and the other end passes through the transmission assembly 200 and is connected to the drive assembly 100. By setting the output shaft 330, the transmission connection between the magnet 310 and the drive assembly 100 is realized. The drive assembly 100 drives the output shaft 330 to rotate, thereby driving the magnet 310 to rotate.

[0044] Specifically, such as Figure 1 and Figure 2 As shown, the output shaft 330 passes sequentially through the flange 320 and the drive wheel 210 of the transmission assembly 200 and is connected to the drive assembly 100. A limiting boss 331 is provided on the output shaft 330, which abuts against the drive wheel 210. In this application, the flange 320 and the drive wheel 210 are integrally formed. One end of the output shaft 330 is connected to the magnet 310, and the other end passes sequentially through the flange 320 and the drive wheel 210 and is connected to the drive assembly 100, thereby achieving a transmission connection. The limiting boss 331 on the output shaft 330 abuts against the drive wheel 210, thus limiting the relative position of the drive wheel 210 and the output shaft 330 and preventing the flange 320 and the drive wheel 210 from moving axially along the output shaft 330.

[0045] More specifically, such as Figure 1 and Figure 2 As shown, the limiting boss 331 is located on the side of the drive wheel 210 away from the flange 320.

[0046] More specifically, in some embodiments, the limiting boss 331 is ring-shaped, and the end face of the limiting boss 331 is connected to the end face of the drive wheel 210 on the side away from the flange 320.

[0047] In some embodiments, the limiting boss 331 can be configured in any shape, as long as it can abut against the side of the drive wheel 210 away from the flange 320.

[0048] In some embodiments, as Figure 1 and Figure 2As shown, the transmission assembly 200 includes a drive wheel 210, a flange 320 and a magnet 310 located on the same side of the drive wheel 210, and the flange 320 and the drive assembly 100 respectively disposed on opposite sides of the drive wheel 210. The axial direction of the output shaft 330 is parallel to the first direction. By placing the flange 320 and the magnet 310 on the same side of the drive wheel 210, and the flange 320 and the drive assembly 100 respectively disposed on opposite sides of the drive wheel 210, i.e., the flange 320 and the magnet 310 are located on one side of the drive wheel 210, and the drive assembly 100 is located on the other side of the drive wheel 210, and the output shaft 330 passes through the flange 320, thereby arranging the permanent magnet clutch 300, the drive wheel 210, and the drive assembly 100 along the first direction. This adjusts the transmission layout of the motion mechanism, ensuring speed and accuracy requirements while reducing the structural complexity of the motion mechanism itself and shrinking the transmission volume.

[0049] More specifically, such as Figure 1 and Figure 2 As shown, flange 320 and magnet 310 are located between drive wheel 210 and bed plate 500, that is, flange 320 and magnet 310 are located above drive wheel 210. The output shaft 330 of permanent magnet clutch 300 passes through flange 320 and drive wheel 210 and is connected to drive assembly 100. Existing motion mechanisms place the safety clutch below drive wheel 210 and a connecting arm between drive wheel 210 and safety clutch, resulting in a large and complex motion mechanism. In contrast, this application places flange 320 and magnet 310 above drive wheel 210 (in... Figure 1 (From above the viewpoint), the transmission layout has been adjusted, eliminating the need for connecting levers. This not only reduces the structural complexity of the motion mechanism but also narrows its width, thereby reducing its volume and the space it occupies.

[0050] Specifically, such as Figure 1 and Figure 2 As shown, the permanent magnet clutch 300 also includes a bearing 340, and the output shaft 330 is rotatably engaged with the flange 320 via the bearing 340. By setting the bearing 340, which is sleeved on the output shaft 330, with the inner ring of the bearing 340 connected to the output shaft 330 and the outer ring connected to the flange 320, a rotatable engagement between the output shaft 330 and the flange 320 is achieved. The rotation of the output shaft 330 causes the inner ring of the bearing 340 to rotate relative to the outer ring, while the outer ring of the bearing 340 does not rotate, and therefore the flange 320 does not rotate. In other words, for the motion mechanism of this application to achieve the rotation of the flange 320 and the drive wheel 210, the flange 320 and the magnet 310 must be attracted to each other in the de-energized state, and the rotation of the magnet 310 is necessary to drive the flange 320 and the drive wheel 210 to rotate.

[0051] Specifically, such as Figure 2 As shown, the flange 320 and the drive wheel 210 of this application are integrally formed. Through holes are provided on the flange 320 and the drive wheel 210. The bearing 340 is sleeved on the output shaft 330 and is disposed in the through hole.

[0052] In other embodiments, a through hole may be machined only in the region of flange 320, with bearing 340 sleeved on output shaft 330 and disposed within the through hole. Alternatively, a through hole may be machined only in the region of drive wheel 210, with bearing 340 sleeved on output shaft 330 and disposed within the through hole.

[0053] In some embodiments, as Figure 1 and Figure 2 As shown, the drive assembly 100 includes a drive source 110 and a reduction gearbox 120 connected to the drive source 110. One end of the output shaft 330 facing away from the magnet 310 is connected to the reduction gearbox 120. The output end of the drive source 110 is connected to the reduction gearbox 120, and the end of the output shaft 330 facing away from the magnet 310 also extends into and is connected to the reduction gearbox 120. The drive source 110 drives the output shaft 330 to rotate through the reduction gearbox 120, thereby causing the magnet 310 to rotate.

[0054] This application also provides a hospital bed, including a bed board 500 and the motion mechanism described above, wherein the bed board 500 is connected to the transmission assembly 200. In the hospital bed provided by this application, the belt 220 of the transmission assembly 200 is connected to the bed board 500, and the permanent magnet clutch 300 is connected to the drive assembly 100. When the permanent magnet clutch 300 is de-energized, it engages with the drive wheel 210, thus entering the working state. At this time, the belt 220 drives the bed board 500 to move. When the permanent magnet clutch 300 is energized, there is a gap between the permanent magnet clutch 300 and the drive wheel 210, i.e., the working state is disengaged, and the bed board 500 cannot be driven to move by the drive assembly 100 and the transmission assembly 200. The bed board 500 of the hospital bed of this application remains in a de-energized and engaged working state in most usage scenarios, reducing power supply requirements and operating temperature, and avoiding safety hazards. Moreover, the permanent magnet clutch 300, transmission assembly 200, and drive assembly 100 are arranged along the first direction, which reduces the arrangement of related structures in the moving direction of the transmission assembly 200, thereby reducing the volume of the motion mechanism.

[0055] In some embodiments, Figure 1From this perspective, the motion mechanism is located below the bed board 500, and the permanent magnet clutch 300 is positioned between the bed board 500 and the transmission assembly 200. The motion mechanism is positioned below the bed board 500, and the flange 320 and magnet 310 of the permanent magnet clutch 300 are positioned between the drive wheel 210 and the bed board 500, i.e., the flange 320 and magnet 310 are positioned above the drive wheel 210. The output shaft 330 of the permanent magnet clutch 300 passes through the flange 320 and the drive wheel 210 and connects to the drive mechanism. This adjustment to the transmission layout of the existing hospital bed eliminates the need for a connecting lever arm, reducing the structural complexity of the motion mechanism and decreasing the width of the hospital bed, thereby reducing the volume of the motion mechanism and the space it occupies.

[0056] 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, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A motion mechanism, characterized in that, The motion mechanism includes: Drive component (100); Transmission assembly (200); A permanent magnet clutch (300) is connected to the drive assembly (100), and the permanent magnet clutch (300), the transmission assembly (200), and the drive assembly (100) are arranged along a first direction, wherein the first direction is perpendicular to the movement direction of the transmission assembly (200).

2. The motion mechanism according to claim 1, characterized in that, The permanent magnet clutch (300) includes a magnet (310) and a flange (320), the magnet (310) being connected to the drive assembly (100) and the flange (320) being connected to the transmission assembly (200).

3. The motion mechanism according to claim 2, characterized in that, The permanent magnet clutch (300) also includes an output shaft (330), one end of which is connected to the magnet (310), and the other end passes through the flange (320) and is connected to the drive assembly (100).

4. The motion mechanism according to claim 3, characterized in that, The output shaft (330) passes through the flange (320) and the drive wheel (210) of the transmission assembly (200) in sequence and is connected to the drive assembly (100). A limiting boss (331) is provided on the output shaft (330), and the limiting boss (331) can abut against the drive wheel (210).

5. The motion mechanism according to claim 3, characterized in that, The transmission assembly (200) includes a drive wheel (210), the flange (320) and the magnet (310) are located on the same side of the drive wheel (210), and the flange (320) and the drive assembly (100) are respectively disposed on both sides of the drive wheel (210), and the axial direction of the output shaft (330) is parallel to the first direction.

6. The motion mechanism according to claim 3, characterized in that, The permanent magnet clutch (300) also includes a bearing (340), and the output shaft (330) is rotatably engaged with the flange (320) through the bearing (340).

7. The motion mechanism according to claim 3, characterized in that, The drive assembly (100) includes a drive source (110) and a reduction gearbox (120) connected to the drive source (110), and the output shaft (330) is connected to the reduction gearbox (120) at one end away from the magnet (310).

8. The motion mechanism according to claim 2, characterized in that, The transmission assembly (200) includes a drive wheel (210), and the flange (320) and the drive wheel (210) are integrally formed.

9. A hospital bed, characterized in that, It includes a bed board (500) and a motion mechanism as described in any one of claims 1-8, wherein the bed board (500) is connected to the transmission assembly (200).

10. The hospital bed according to claim 9, characterized in that, The motion mechanism is located below the bed board (500), and the permanent magnet clutch (300) is located between the bed board (500) and the transmission assembly (200).

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