Medical bed

Abstract

The embodiment of the present application provides a medical bed, and relates to the technical field of medical instruments. The medical bed comprises a bed frame, a weighing sensor, a bed plate and at least one buffering mechanism. The weighing sensor is arranged on the bed frame. The bed plate is arranged on the weighing sensor, the weighing sensor is used for detecting the weight of the bed plate, and the bed plate is movable in a vertical direction. The buffering mechanism comprises a bearing assembly and a buffering assembly connected with the bearing assembly, the bearing assembly is connected with the bed plate, the buffering assembly connects the bearing assembly and the bed frame, and the bearing assembly and the buffering assembly are located on the side of the bed plate facing the weighing sensor. Wherein, the bed plate moves in the vertical direction and drives the bearing assembly to move in the vertical direction, so that the buffering assembly is compressed or stretched in the horizontal direction. The medical bed of the embodiment of the present application can reduce the impact force transmitted to the weighing sensor when the bed plate is subjected to a larger impact force, so that the weighing sensor is not easily damaged.

Description

Technical Field

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

[0002] Patients are prone to accidents when getting off the medical bed alone. To ensure patient safety, it is necessary to install an alarm device on the medical bed to prevent accidents.

[0003] The related technology provides a medical bed, including a bed frame, a bed board, a weighing sensor and an alarm. The weighing sensor is installed between the bed frame and the bed board. When the weighing sensor detects a decrease in weight on the bed board, it triggers the alarm to realize bed exit detection.

[0004] However, when the bed board is subjected to a large impact force, the impact force is transmitted to the load cell, which can easily damage the load cell. Utility Model Content

[0005] This application provides a medical bed that can reduce the impact force transmitted to the weighing sensor when the bed board is subjected to a large impact force, making the weighing sensor less likely to be damaged.

[0006] This application provides a medical bed, including a bed frame, a load cell, a bed board, and at least one cushioning mechanism. The load cell is mounted on the bed frame. The bed board is mounted on the load cell, which detects the weight of the bed board. The bed board is movable vertically. The cushioning mechanism includes a support component and a cushioning component connected to the support component. The support component is connected to the bed board, and the cushioning component connects the support component to the bed frame. Both the support component and the cushioning component are located on the side of the bed board facing the load cell. The bed board moves vertically, causing the support component to move vertically as well, thereby compressing or extending the cushioning component horizontally.

[0007] In some possible implementations, the buffer mechanism further includes a housing mounted on the bed frame. The housing has a first receiving cavity and a through-hole communicating with the first receiving cavity, the through-hole being vertically oriented. A support assembly is inserted into the through-hole, with a portion of the support assembly located within the first receiving cavity, and the support assembly is slidable within the through-hole. One end of the buffer assembly is fixedly connected to the housing, and the other end of the buffer assembly is slidably connected to the housing, and the other end of the buffer assembly is connected to the support assembly located within the first receiving cavity.

[0008] In some possible implementations, the buffer assembly includes at least two push blocks and at least two first elastic elements. The push blocks are slidably connected to the housing and connected to a support assembly. Each first elastic element corresponds to one push block; one end of each first elastic element is fixedly connected to the housing, and the other end is fixedly connected to a push block. The support assembly slides vertically to cause the push blocks to slide horizontally, thereby compressing or extending the first elastic elements.

[0009] In some possible implementations, the pusher has a first contact surface at an angle to the horizontal direction. The bearing assembly has a second contact surface at an angle to the horizontal direction. One of the first and second contact surfaces has a limiting groove, and the other has a guide member located within the limiting groove, which is slidable along the limiting groove.

[0010] In some possible implementations, the buffer mechanism also includes a first slide rail, which is fixedly connected to the housing, and the push block is slidably connected to the first slide rail.

[0011] In some possible implementations, the load-bearing component includes a first sliding member and a force-transmitting member. The first sliding member is inserted into a through-hole, with a portion located within a first receiving cavity, allowing it to slide within the through-hole. The force-transmitting member is fixedly connected to the first sliding member and also connected to a buffer assembly. The first sliding member slides vertically to move the force-transmitting member vertically and to compress or extend the buffer assembly horizontally.

[0012] In some possible implementations, the medical bed also includes at least two second slide rails, which are fixedly connected to the bed frame and slidably connected to the bed board.

[0013] In some possible implementations, the medical bed also includes a fixing mechanism, which comprises a base and a snap-fit ​​assembly. The base is fixedly connected to the bed frame. The snap-fit ​​assembly includes a connector, a force-applying component, and a snap-fit ​​component. The connector is slidably connected to the base, the force-applying component is fixedly connected to one end of the connector, and the snap-fit ​​component is fixedly connected to the other end of the connector, snapping into a load cell. When an external force is applied to the force-applying component, the connector slides relative to the base, causing the snap-fit ​​component to disengage from the load cell.

[0014] In some possible implementations, the base has a second receiving cavity, and the base has a first sliding hole and a second sliding hole communicating with the second receiving cavity. A connector is inserted into the first sliding hole, with a portion of the connector located within the second receiving cavity. A snap-fit ​​component is inserted into the second sliding hole, with a portion of the snap-fit ​​component located within the second receiving cavity. The fixing mechanism also includes a second elastic element and a second sliding element. The second elastic element is sleeved around the periphery of the connector located within the second receiving cavity. One end of the second elastic element is fixedly connected to the snap-fit ​​component, and the other end is fixedly connected to the base. The second sliding element is fixedly connected to the periphery of the snap-fit ​​component located within the second receiving cavity, and the second sliding element is slidably connected to the cavity wall of the second receiving cavity. When an external force is applied to the force-applying component, the connector slides relative to the base, causing the second elastic element to compress and disengage the snap-fit ​​component from the load cell. When the force-applying component loses its external force, the second elastic element extends, causing the connector to slide relative to the base and engage the snap-fit ​​component with the load cell.

[0015] In some possible implementations, the medical bed also includes an infrared sensor, an alarm, and a controller. The infrared sensor is mounted on the bed frame and is used to detect infrared signals. The alarm is also mounted on the bed frame and is used to issue a warning message. The controller is communicatively connected to the weighing sensor, the infrared sensor, and the alarm. The controller is used to activate the alarm when the weight of the bed board is lower than a preset weight and the infrared signal meets preset conditions.

[0016] The medical bed provided in this embodiment, when its bed board is subjected to a large impact force, because the supporting component is connected to the bed board, the downward movement of the bed board will cause the supporting component to move downward in the vertical direction. This vertical downward movement of the supporting component, through its connection with the buffer component, can be converted into a force on the buffer component, causing the buffer component to be compressed in the horizontal direction. During the compression process of the buffer component, the energy generated by the impact force is absorbed by the buffer component and stored in the form of elastic potential energy. In this way, the buffer component absorbs part of the impact force acting on the bed board, thereby reducing the impact force transmitted to the weighing sensor.

[0017] When the impact force on the bed board disappears or decreases, the compressed buffer component extends horizontally under its own elastic restoring force, releasing the previously stored elastic potential energy and converting it into a driving force. This driving force is transmitted to the bed board through the load-bearing component, causing the bed board to move vertically upwards, gradually returning it to its original position. Throughout the entire impact absorption and recovery process, the buffer component converts some of the impact energy into the kinetic energy of the bed board; that is, the downward and upward movement of the bed board consumes some of the impact energy, reducing the impact energy ultimately transmitted to the load cell. This reduces the probability of the load cell being damaged by excessive impact, extending its service life and reducing maintenance costs.

[0018] Furthermore, since both the bed board and the support assembly move vertically, while the cushioning assembly compresses and extends horizontally, this change in direction allows the cushioning assembly to be arranged horizontally with the support assembly when compressed, unlike the support assembly which is directly connected to the spring and arranged vertically. If the cushioning assembly were arranged vertically, it would occupy a large vertical space when compressed, increasing the overall height of the bed board in the vertical direction. In this embodiment, however, the cushioning assembly compresses horizontally, and the compression process does not increase the vertical dimensions of the bed board. Therefore, when the cushioning assembly is compressed, the vertical height of the bed board can be set lower, ensuring both the cushioning function and a more compact overall structure for the medical bed, facilitating its use and placement in a medical environment. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 A schematic diagram of the structure of a medical bed provided in an embodiment of this application;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of a medical bed without its bed frame;

[0022] Figure 3 A schematic diagram of a buffer mechanism provided in an embodiment of this application;

[0023] Figure 4 Another schematic diagram of the buffer mechanism provided in the embodiments of this application;

[0024] Figure 5 Another structural schematic diagram of the medical bed provided in this application;

[0025] Figure 6 This is a schematic diagram of a fixing mechanism provided in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Bed frame; 110. Recessed groove;

[0028] 200. Weighing sensor;

[0029] 300. Bed board;

[0030] 400, Buffer mechanism; 410, Bearing assembly; 411, Second contact surface; 412, Guide member; 413, First sliding member; 414, Force transmission member; 420, Buffer assembly; 421, Push block; 422, First elastic member; 423, First contact surface; 424, Limiting groove; 430, Housing; 431, First receiving cavity; 432, Through hole; 440, First slide rail;

[0031] 500, Second slide rail;

[0032] 600, Fixing mechanism; 610, Base; 611, Second receiving cavity; 612, First sliding hole; 613, Second sliding hole; 620, Snap-fit ​​assembly; 621, Connector; 622, Force-applying component; 623, Snap-fit ​​component; 630, Second elastic component; 640, Second sliding component;

[0033] 700. Infrared sensor;

[0034] 800, Alarm;

[0035] 900. Display panel.

[0036] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: the components indicated by spline curves without arrows can be solid components, that is, components with solid structures; the components indicated by spline curves with arrows can be virtual components, that is, components without solid structures; in some cases, the components indicated by spline curves with arrows can also be assemblies with solid structures or virtual structures.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the embodiments of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships (if present), are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 on the embodiments of this application. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Where there is no conflict, embodiments of this application and the various features thereof can be combined with each other, all of which are within the scope of protection of this application.

[0040] Patients are prone to accidents when getting off the medical bed alone. To ensure patient safety, it is necessary to install an alarm device on the medical bed to prevent accidents.

[0041] The related technology provides a medical bed, including a bed frame, a bed board, a weighing sensor and an alarm. The weighing sensor is installed between the bed frame and the bed board. When the weighing sensor detects a decrease in weight on the bed board, it triggers the alarm to realize bed exit detection.

[0042] However, because the load cells are directly installed between the bed frame and the bed board, when the bed board is subjected to significant impact—such as when a patient suddenly sits on the bed, a heavy object falls onto the bed board, or medical staff apply excessive pressure to the bed board during nursing procedures—this impact force is directly transmitted to the load cells through the bed board. The internal components of the load cells are highly sensitive to impact forces. When subjected to impact forces exceeding their load-bearing capacity, the internal structure of the load cells can easily deform or be damaged, or their measurement accuracy can be affected. This can lead to load cell failure or inaccurate measurements, requiring frequent replacements of the load cells, increasing maintenance costs, and affecting the reliability of the bed exit detection function, ultimately failing to effectively ensure patient safety.

[0043] Figure 1 This is a schematic diagram of the structure of a medical bed provided in an embodiment of this application. Figure 2 for Figure 1 A schematic diagram of the structure of the medical bed without the bed frame 100. Figure 3 This is a schematic diagram of a buffer mechanism 400 provided in an embodiment of this application.

[0044] In view of this, such as Figure 1 and Figure 2 As shown, this application embodiment provides a medical bed, including a bed frame 100, a weighing sensor 200, a bed board 300, and at least one buffer mechanism 400. The weighing sensor 200 is disposed on the bed frame 100. The bed board 300 is disposed on the weighing sensor 200, and the weighing sensor 200 is used to detect the weight of the bed board 300. The bed board 300 is movable in the vertical direction. Figure 3 As shown, the buffer mechanism 400 includes a support component 410 and a buffer component 420 connected to the support component 410. The support component 410 is connected to the bed board 300, and the buffer component 420 connects the support component 410 to the bed frame 100. Both the support component 410 and the buffer component 420 are located on the side of the bed board 300 facing the weighing sensor 200.

[0045] The bed board 300 moves vertically and drives the bearing assembly 410 to move vertically, so that the buffer assembly 420 is compressed or extended horizontally.

[0046] In this embodiment of the application, by setting a weighing sensor 200 on the bed frame 100 and placing the bed board 300 on the weighing sensor 200, the weight of the bed board 300 can be detected, thereby monitoring whether the patient gets out of bed.

[0047] To address the issue of the weighing sensor 200 being easily damaged by impact, this embodiment of the application includes at least one buffer mechanism 400, which comprises a support component 410 and a buffer component 420 connected to the support component 410. During the use of the medical bed, when the bed board 300 is subjected to a large impact force, the downward movement of the bed board 300, due to the connection between the support component 410 and the bed board 300, causes the support component 410 to move vertically downward. This vertical downward movement of the support component 410, through its connection with the buffer component 420, is converted into a force on the buffer component 420, causing the buffer component 420 to be compressed horizontally. During the compression of the buffer component 420, the energy generated by the impact force is absorbed by the buffer component 420 and stored as elastic potential energy. This allows the buffer component 420 to absorb part of the impact force acting on the bed board 300, thereby reducing the impact force transmitted to the weighing sensor 200.

[0048] When the impact force on the bed board 300 disappears or decreases, the compressed buffer component 420 extends horizontally under its own elastic restoring force, releasing the previously stored elastic potential energy and converting it into a driving force. This driving force is transmitted to the bed board 300 through the bearing component 410, causing the bed board 300 to move vertically upwards, gradually restoring it to its original position. Throughout the entire impact absorption and recovery process, the buffer component 420 converts some of the impact energy into the kinetic energy of the bed board 300. That is, the downward and upward movement of the bed board 300 consumes some of the impact energy, reducing the impact energy ultimately transmitted to the load cell 200. This reduces the probability of the load cell 200 being damaged by excessive impact, extending its service life and reducing maintenance costs.

[0049] Furthermore, since both the bed board 300 and the support assembly 410 move vertically, while the cushioning assembly 420 undergoes compression and extension movements horizontally, this change in movement direction allows the cushioning assembly 420 to be arranged horizontally with the support assembly 410 when compressed, instead of being arranged vertically as the support assembly 410 is directly connected to the spring. If the cushioning assembly 420 were arranged vertically, it would occupy a large vertical space when compressed, increasing the overall height of the bed board 300 in the vertical direction. However, in this embodiment, the cushioning assembly 420 is compressed horizontally, and the compression process does not increase the vertical dimension of the bed board 300. Therefore, when the cushioning assembly 420 is compressed, the height of the bed board 300 in the vertical direction can be set lower. This ensures the cushioning function while making the overall structure of the medical bed more compact, facilitating its use and placement in a medical environment.

[0050] In some embodiments, the load cell 200 may be a single-point load cell, a beam load cell, an S-type load cell, etc.

[0051] In some embodiments, such as Figure 2 As shown, the bed frame 100 has a receiving groove 110, and at least part of the load cell 200 and the buffer mechanism 400 can be located in the receiving groove 110. In this way, the receiving groove 110 can accommodate and protect the load cell 200 and the buffer mechanism 400.

[0052] In some possible implementations, such as Figure 3As shown, the buffer mechanism 400 also includes a housing 430, which is disposed on the bed frame 100. The housing 430 has a first receiving cavity 431 and a through hole 432 communicating with the first receiving cavity 431. The through hole 432 is arranged vertically. A support assembly 410 is inserted into the through hole 432, and a portion of the support assembly 410 is located within the first receiving cavity 431. The support assembly 410 can slide within the through hole 432. One end of the buffer assembly 420 is fixedly connected to the housing 430, and the other end of the buffer assembly 420 is slidably connected to the housing 430. The other end of the buffer assembly 420 is connected to the support assembly 410 located within the first receiving cavity 431.

[0053] By setting the housing 430, the load-bearing component 410 and the buffer component 420 can be integrated into the housing 430, so that the buffer mechanism 400 forms an integral structure. Thus, during installation, the entire buffer mechanism 400 can be directly fixed to the bed frame 100 as a module without the need to install the load-bearing component 410 and the buffer component 420 separately, which simplifies the installation steps and improves the installation efficiency.

[0054] Meanwhile, the housing 430 provides physical protection for the load-bearing component 410 and the buffer component 420, preventing external dust, liquid or other impurities from entering the first receiving cavity 431, avoiding the load-bearing component 410 and the buffer component 420 from being affected by contamination and extending the service life of the buffer mechanism 400.

[0055] In addition, the through hole 432 on the housing 430 provides a sliding guide path for the support component 410, making the vertical movement of the support component 410 more stable and precise, reducing the lateral sway of the support component 410, thereby ensuring that the buffer component 420 can be accurately compressed or extended in the horizontal direction, improving the stability and reliability of the buffering effect.

[0056] In some embodiments, the housing 430 may be made of a metallic material, such as stainless steel or aluminum alloy, to provide sufficient structural strength and corrosion resistance. Alternatively, in other embodiments, the housing 430 may be made of a high-strength engineering plastic, such as polycarbonate or ABS plastic, to reduce the overall weight of the cushioning mechanism 400.

[0057] In some embodiments, the via 432 can be a regular shape such as a circle, rectangle, or ellipse, or it can be an irregular shape.

[0058] In some embodiments, the housing 430 and the bed frame 100 may be connected by means of screwing, welding or snap-fitting.

[0059] In some embodiments, the inner wall of the through hole 432 may be provided with a guide groove to cooperate with the guide protrusion on the support assembly 410 to enhance the sliding stability of the support assembly 410. Alternatively, in other embodiments, a sliding bearing or bushing may also be installed in the through hole 432 to improve the sliding smoothness and wear resistance of the support assembly 410.

[0060] Of course, in addition to including the housing 430, in some other possible implementations, the buffer mechanism 400 may not include the housing 430. In this case, the bed frame 100 may include a first support layer located on the upper layer and a second support layer located on the lower layer. The support component 410 may be slidably connected to the first support layer, and the buffer component 420 may be disposed between the second support layer and the first support layer.

[0061] In some possible implementations, such as Figure 3 As shown, the buffer assembly 420 includes at least two push blocks 421 and at least two first elastic members 422. The push blocks 421 are slidably connected to the housing 430 and connected to the bearing assembly 410. The first elastic members 422 correspond one-to-one with the push blocks 421. One end of the first elastic member 422 is fixedly connected to the housing (430), and the other end of the first elastic member 422 is fixedly connected to the push block 421.

[0062] The bearing component 410 slides vertically to drive the pusher block 421 to slide horizontally, so that the first elastic element 422 is compressed or extended.

[0063] By setting at least two push blocks 421 in cooperation with at least two first elastic elements 422, when the bed board 300 is subjected to an impact force, the bearing assembly 410 slides downward in the vertical direction, and the push blocks 421 slide in the horizontal direction under the drive of the bearing assembly 410. At this time, multiple first elastic elements 422 are compressed at the same time, and multiple first elastic elements 422 absorb the impact energy together. Compared with the setting of a single elastic element, multiple first elastic elements 422 can withstand a greater impact force, thereby improving the buffering capacity of the buffer assembly 420.

[0064] The sliding connection between the push block 421 and the housing 430 allows the push block 421 to move smoothly in the horizontal direction within the housing 430, preventing jamming or displacement during movement. This ensures that the first elastic element 422 is evenly stressed, improving the stability and reliability of the buffer assembly 420. The structure of the first elastic element 422, with one end fixedly connected to the housing 430 and the other end fixedly connected to the push block 421, provides the first elastic element 422 with a support point and a point of action during compression and extension. This effectively converts impact energy into elastic potential energy and stores it. When the impact force disappears, the first elastic element 422 releases the stored energy, pushing the push block 421 to reset, which in turn drives the bearing assembly 410 and the bed board 300 to move upwards, thus realizing the automatic reset function of the buffer assembly 420.

[0065] It can be seen that the combination structure of push block 421 and first elastic element 422 makes the structure of buffer assembly 420 simple, easy to process and manufacture, reduces production costs, and facilitates later maintenance and replacement.

[0066] In some embodiments, the number of push blocks 421 can be set to two, three, four or more, and correspondingly, the number of first elastic members 422 also corresponds to the number of push blocks 421. Increasing the number of push blocks 421 can further enhance the overall buffering capacity of the buffer assembly 420, enabling the medical bed to withstand greater impact loads.

[0067] In some embodiments, the first elastic element 422 may be a component with elastic deformation capability, such as a compression spring, tension spring, torsion spring, rubber elastomer, polyurethane elastomer, or gas spring.

[0068] In some embodiments, the push block 421 may be a rectangular block, a cylindrical block, a wedge-shaped block, or a block structure of other shapes.

[0069] In some embodiments, multiple push blocks 421 can be symmetrically distributed around the support component 410. The symmetrical distribution allows the support component 410 to maintain balance when subjected to force, avoiding tilting or displacement of the support component 410 due to uneven force, and ensuring stable operation of the buffer component 420.

[0070] In some embodiments, the push block 421 and the first elastic member 422 can be fixedly connected by means of threaded connection, snap-fit ​​connection, welding connection or adhesive connection. Different connection methods have different connection strengths and ease of assembly and disassembly. The appropriate connection method can be selected according to actual needs.

[0071] Figure 4 This is a schematic diagram of another structure of the buffer mechanism 400 provided in an embodiment of this application.

[0072] In some possible implementations, such as Figure 4 As shown, the pusher block 421 has a first contact surface 423, which forms an angle with the horizontal direction. The bearing assembly 410 has a second contact surface 411, which also forms an angle with the horizontal direction.

[0073] One of the first contact surface 423 and the second contact surface 411 has a limiting groove 424, and the other has a guide 412. The guide 412 is located in the limiting groove 424 and can slide along the limiting groove 424.

[0074] By providing a first contact surface 423 with an angle to the horizontal direction on the push block 421 and a second contact surface 411 with an angle to the horizontal direction on the bearing assembly 410, when the bearing assembly 410 moves downward in the vertical direction, the second contact surface 411 will slide along the first contact surface 423. Since the first contact surface 423 has an angle with the horizontal direction, the second contact surface 411 will generate a horizontal component force during the sliding process along the first contact surface 423. This horizontal component force pushes the push block 421 to move in the horizontal direction, thereby converting the vertical movement of the bearing assembly 410 into the horizontal movement of the push block 421, so that the first elastic element 422 can be compressed in the horizontal direction to absorb impact energy.

[0075] By setting a cooperative structure between the guide member 412 and the limiting groove 424, the guide member 412 can guide and limit the relative movement between the bearing component 410 and the push block 421 when it slides in the limiting groove 424, ensuring that the first contact surface 423 and the second contact surface 411 always remain in contact and slide along a predetermined trajectory, avoiding the bearing component 410 and the push block 421 from shifting or separating during relative movement, thus ensuring the stability and reliability of the movement of the buffer mechanism 400.

[0076] Furthermore, during the sliding of the guide member 412 along the limiting groove 424, the friction between the guide member 412 and the limiting groove 424 hinders the impact force, thereby converting part of the impact force into heat energy generated by friction between the guide member 412 and the limiting groove 424 and dissipating it, thus reducing the impact force transmitted to the load cell 200. Simultaneously, if the first contact surface 423 contacts the second contact surface 411, during the sliding of the guide member 412 along the limiting groove 424, the friction between the first contact surface 423 and the second contact surface 411 also hinders the impact force, thereby converting part of the impact force into heat energy generated by friction between the first contact surface 423 and the second contact surface 411 and dissipating it, thus also reducing the impact force transmitted to the load cell 200.

[0077] In some embodiments, the guide member 412 is a protruding structure, and the limiting groove 424 is a groove structure that matches the shape of the protruding structure, allowing the protruding structure to slide within the groove structure. For example, the width of the opening of the limiting groove 424 is smaller than the width of the bottom of the groove. Therefore, when the guide member 412 is located within the limiting groove 424, the limiting groove 424 can limit the guide member 412 to prevent it from detaching.

[0078] Alternatively, in other embodiments, the guide 412 is a roller or ball, and the limiting groove 424 is a guide rail structure. The roller or ball rolls within the guide rail structure to reduce the friction between the bearing component 410 and the push block 421 and improve the smoothness of movement.

[0079] In some embodiments, the angle between the first contact surface 423 and the horizontal direction ranges from 15 degrees to 75 degrees. When the angle ranges from 30 degrees to 60 degrees, the compactness of the structure can be ensured while maintaining motion conversion efficiency. Furthermore, when the angle is 45 degrees, the motion conversion efficiency in the vertical direction and the horizontal direction is more balanced.

[0080] In some possible implementations, such as Figure 3 and Figure 4 As shown, the buffer mechanism 400 also includes a first slide rail 440, which is fixedly connected to the housing 430, and the push block 421 is slidably connected to the first slide rail 440.

[0081] By setting a first slide rail 440 in the buffer mechanism 400, the first slide rail 440 is fixedly connected to the housing 430 to form a stable sliding guide base. The sliding connection between the push block 421 and the first slide rail 440 can ensure that the push block 421 maintains a stable movement trajectory when moving in the horizontal direction. When the bed board 300 is subjected to an impact force and moves downward in the vertical direction, the bearing component 410 drives the push block 421 to slide in the horizontal direction. At this time, the first slide rail 440 can provide guidance for the push block 421, preventing the push block 421 from deviating or tilting during the sliding process, thereby ensuring that the force between the push block 421 and the first elastic member 422 is uniform, so that the first elastic member 422 can be compressed evenly and effectively absorb the impact energy.

[0082] In some embodiments, the first slide rail 440 can be a strip slide rail that extends horizontally. The bottom of the push block 421 is provided with a groove that cooperates with the strip slide rail. The groove and the strip slide rail slide in a sliding fit. This structure is simple, reliable, and easy to manufacture.

[0083] In some embodiments, the first slide rail 440 can be a ball bearing guide rail, and the push block 421 is slidably connected to the first slide rail 440 through balls. The ball bearing guide rail can significantly reduce the frictional resistance when the push block 421 slides, making the slide of the push block 421 smoother and improving the buffer response speed and energy conversion efficiency.

[0084] In some embodiments, the first slide rail 440 can be a linear bearing guide rail, and a linear bearing is provided inside the push block 421. The linear bearing is sleeved on the first slide rail 440 and can slide along the first slide rail 440. The linear bearing guide rail has high precision and load-bearing capacity and is suitable for application scenarios that require frequent sliding.

[0085] In some embodiments, the buffer mechanism 400 may include two first slide rails 440, which are respectively disposed on both sides of the push block 421. The push block 421 is slidably connected to both first slide rails 440. This dual slide rail structure can provide more stable support and guidance for the push block 421 and prevent the push block 421 from twisting or tilting during sliding.

[0086] In some possible implementations, such as Figure 3 and Figure 4 As shown, the bearing assembly 410 includes a first sliding member 413 and a force transmission member 414. The first sliding member 413 is inserted into the through hole 432, and a portion of the first sliding member 413 is located within the first receiving cavity 431, allowing the first sliding member 413 to slide within the through hole 432. The force transmission member 414 is fixedly connected to the first sliding member 413 and is also connected to the buffer assembly 420.

[0087] The first sliding member 413 slides vertically to drive the force transmission member 414 to move vertically and to drive the buffer assembly 420 to compress or extend horizontally.

[0088] When the bed board 300 is subjected to an impact force, the bed board 300 moves downward in the vertical direction and drives the first sliding member 413 to slide downward in the vertical direction within the through hole 432. The sliding of the first sliding member 413 then drives the force transmission member 414 fixedly connected to it to move downward in the vertical direction. The movement of the force transmission member 414 will drive the buffer assembly 420 connected to it to compress in the horizontal direction.

[0089] Through the cooperation of the first sliding member 413 and the force transmission member 414, the conversion from vertical to horizontal movement is achieved, enabling the buffer assembly 420 to effectively absorb impact force. This structural design makes the motion transmission path of the load-bearing assembly 410 clear. The first sliding member 413 is responsible for guiding the sliding within the through hole 432, and the force transmission member 414 is responsible for transmitting the motion to the buffer assembly 420. The division of labor between the two is clear, thereby improving the working stability and reliability of the buffer mechanism 400.

[0090] In addition, the sliding of the first sliding member 413 within the through hole 432 can limit the movement direction of the bearing component 410, ensuring that the bearing component 410 moves only in the vertical direction without deviation. This ensures that the force transmission member 414 accurately transmits the motion to the buffer component 420, avoiding a reduction in the buffering effect due to deviation in the movement direction.

[0091] Meanwhile, the load-bearing component 410 is divided into two parts: the first sliding member 413 and the force transmission member 414. This makes it easier to select different materials and structures according to actual needs. The first sliding member 413 can be made of wear-resistant materials to improve sliding life, and the force transmission member 414 can be made of high-strength materials to ensure force transmission effect. Therefore, the overall performance and service life of the buffer mechanism 400 are improved.

[0092] In some embodiments, the shape of the first slider 413 can be a regular shape such as a cylinder or a square column, or it can be an irregular shape.

[0093] In some embodiments, the force transmission member 414 may adopt a plate-like structure, which can provide a larger contact area for connection with the buffer assembly 420, thereby making the force transmission more uniform. In other embodiments, the force transmission member 414 may also adopt a rod-like structure, which is simple in structure and lightweight, making it easier to reduce the overall weight of the load-bearing assembly 410.

[0094] In some embodiments, the force transmission member 414 and the first sliding member 413 can be fixedly connected by welding, snap-fitting, screwing or other methods.

[0095] Of course, in addition to being fixedly connected to the first sliding member 413, in some other possible implementations, the force transmission member 414 can be rotatably connected to the buffer assembly 420 and the first sliding member 413 respectively. The rotatable connection allows a certain degree of rotational freedom between the force transmission member 414 and the buffer assembly 420, thereby adapting to the angle changes of the buffer assembly 420 during compression and extension.

[0096] In some possible implementations, such as Figure 1 and Figure 2 As shown, the medical bed also includes at least two second slide rails 500, which are fixedly connected to the bed frame 100 and slidably connected to the bed board 300.

[0097] By providing a second slide rail 500, the bed board 300 can slide smoothly vertically along the second slide rail 500. The second slide rail 500 defines and guides the movement path of the bed board 300, allowing it to move along a predetermined vertical direction when subjected to impact, preventing lateral displacement or tilting. This guiding effect ensures the stability of the bed board 300's movement, thereby guaranteeing that the buffer mechanism 400 can accurately compress or extend horizontally, enabling the buffer assembly 420 to effectively absorb impact forces.

[0098] Meanwhile, the second slide rail 500 reduces the frictional resistance between the bed board 300 and the bed frame 100, making the bed board 300 move more smoothly in the vertical direction and improving the response speed and cushioning effect of the buffer mechanism 400.

[0099] In addition, the second slide rail 500 can also bear part of the weight of the bed board 300, distributing the load on the load sensor 200, and further reducing the burden on the load sensor 200 during normal use and when subjected to impact.

[0100] Therefore, the guiding and supporting function of the second slide rail 500 not only improves the stability and accuracy of the movement of the bed board 300, but also enhances the reliability of the entire buffer system and effectively protects the weighing sensor 200.

[0101] In some embodiments, the second slide rail 500 may adopt a linear slide rail structure, which includes a guide rail and a slider. The guide rail is fixedly connected to the bed frame 100, and the slider is fixedly connected to the bottom of the bed board 300. The slider can slide on the guide rail. This structure can provide precise linear motion guidance and ensure high precision and low friction in the movement of the bed board 300.

[0102] In some embodiments, the second slide rail 500 may adopt a cylindrical guide rod structure. The cylindrical guide rod is vertically arranged and fixed on the bed frame 100. The bed board 300 is provided with a guide sleeve that cooperates with the cylindrical guide rod. The guide sleeve is sleeved on the outside of the cylindrical guide rod and can slide along the cylindrical guide rod. This structure is easy to install and has a low cost.

[0103] In some embodiments, the number of second slide rails 500 can be set to two, three or four, with multiple second slide rails 500 symmetrically distributed at different positions on the bed board 300 to provide a more balanced support and guiding effect, preventing the bed board 300 from tilting or twisting during movement.

[0104] In some embodiments, a limiting structure may be provided on the second slide rail 500. The limiting structure is used to limit the maximum movement distance of the bed board 300 in the vertical direction, so as to prevent the bed board 300 from moving too much and causing the buffer mechanism 400 to be over-compressed or damaged.

[0105] Figure 5 This is another structural schematic diagram of the medical bed provided in this application. Figure 6 This is a schematic diagram of a fixing mechanism 600 provided in an embodiment of this application.

[0106] In some possible implementations, such as Figure 5 As shown, the medical bed also includes a fixation mechanism 600, such as... Figure 6 As shown, the fixing mechanism 600 includes a base 610 and a snap-fit ​​assembly 620. The base 610 is fixedly connected to the bed frame 100. The snap-fit ​​assembly 620 includes a connector 621, a force-applying member 622, and a snap-fit ​​member 623. The connector 621 is slidably connected to the base 610, the force-applying member 622 is fixedly connected to one end of the connector 621, and the snap-fit ​​member 623 is fixedly connected to the other end of the connector 621. The snap-fit ​​member 623 snaps into the load cell 200.

[0107] When an external force is applied to the force-applying component 622, the connecting component 621 slides relative to the base 610, thereby causing the snap-fit ​​component 623 to disengage from the load cell 200.

[0108] The fixing mechanism 600 provided in this embodiment is fixedly connected to the bed frame 100 via a base 610, providing a stable installation foundation for the snap-fit ​​assembly 620. The connector 621 in the snap-fit ​​assembly 620 is slidably connected to the base 610, allowing the connector 621 to move relative to the base 610. When an external force is applied to the force-applying member 622, the force-applying member 622 transmits the external force to the connector 621, driving the connector 621 to slide relative to the base 610. The sliding of the connector 621 further drives the snap-fit ​​member 623, which is fixedly connected to its other end, to move synchronously, thereby disengaging the snap-fit ​​member 623 from the load cell 200. This design allows the operator to apply external force to the force-applying member 622 to achieve the linkage of the snap-fit ​​member 623 through the sliding of the connector 621, without directly contacting the snap-fit ​​member 623 or the load cell 200, avoiding the difficulties of operating the snap-fit ​​structure in a confined space as in traditional disassembly methods. Since the force-applying component 622 is usually located in an easy-to-operate position, the operator can easily apply force, making the entire disassembly process simple and quick, improving the ease of disassembling the load cell 200, and reducing the time and labor costs of maintaining and replacing the load cell 200.

[0109] Furthermore, the snap-fit ​​connector 623 is connected to the load cell 200 via a snap-fit ​​method. Compared to traditional connection methods such as bolt fixing, the snap-fit ​​connection allows for quick separation without the need for tools, further simplifying the disassembly process. When it is necessary to replace or maintain the load cell 200, the operator only needs to apply external force to the force application component 622. The sliding of the connector 621 will cause the snap-fit ​​connector 623 to disengage, allowing the load cell 200 to be quickly removed. The entire process is simple and time-saving, effectively improving the maintenance efficiency of the medical bed.

[0110] In some embodiments, the force-applying component 622 may be a button structure, and the button surface may be provided with anti-slip texture or protrusions to facilitate the operator's finger application of force and improve the comfort and reliability of operation.

[0111] In some embodiments, the force-applying member 622 may also be a pull rod structure, with a gripping part at the end of the pull rod. The operator can drive the connecting member 621 to slide by pulling the pull rod. This structure is suitable for scenarios that require a large stroke.

[0112] In some embodiments, the force-applying component 622 can also adopt a knob structure. By rotating the knob, the connecting component 621 can be moved along a specific trajectory, thereby disengaging the snap-fit ​​component 623 from the weighing sensor 200. This structure allows for controllable operating force and is suitable for precision operation scenarios.

[0113] In some embodiments, one of the latching member 623 and the load cell 200 has a latching protrusion and the other has a latching groove. The latching protrusion can be inserted into or removed from the latching groove to achieve the latching and release of the latching member 623 and the load cell 200.

[0114] In some embodiments, the snap-fit ​​member 623 may adopt a hook-shaped structure, which engages with the slot on the load cell 200 through the hook portion, and the hook portion exits from the slot when disengaged, which is simple and reliable.

[0115] In some embodiments, the latching member 623 may also adopt a claw structure. The claw has elastic deformation capability and can achieve latching and disengagement with the weighing sensor 200 through elastic deformation. This structure has a certain degree of fault tolerance.

[0116] In some embodiments, the snap-fit ​​member 623 may also adopt a snap-fit ​​structure, wherein the snap-fit ​​forms a locking relationship with the mating part on the load cell 200, and the snap-fit ​​is unlocked by sliding the connector 621 to achieve quick separation.

[0117] In some embodiments, the base 610 can be fixedly connected to the bed frame 100 by means of screwing, welding, snap-fitting, etc.

[0118] In some possible implementations, such as Figure 6As shown, the base 610 has a second receiving cavity 611, and the base 610 has a first sliding hole 612 and a second sliding hole 613 communicating with the second receiving cavity 611. The connector 621 is inserted into the first sliding hole 612, and part of the connector 621 is located in the second receiving cavity 611. The snap-fit ​​member 623 is inserted into the second sliding hole 613, and part of the snap-fit ​​member 623 is located in the second receiving cavity 611.

[0119] The fixing mechanism 600 further includes a second elastic element 630 and a second sliding element 640. The second elastic element 630 is sleeved on the periphery of the connecting member 621 located in the second receiving cavity 611. One end of the second elastic element 630 is fixedly connected to the snap-fit ​​member 623, and the other end of the second elastic element 630 is fixedly connected to the base 610. The second sliding element 640 is fixedly connected to the periphery of the snap-fit ​​member 623 located in the second receiving cavity 611, and the second sliding element 640 is slidably connected to the cavity wall of the second receiving cavity 611. When an external force is applied to the force-applying member 622, the connecting member 621 slides relative to the base 610, thereby compressing the second elastic element 630 and causing the snap-fit ​​member 623 to disengage from the load cell 200. When the force-applying member 622 loses its external force, the second elastic element 630 extends, thereby causing the connecting member 621 to slide relative to the base 610 and causing the snap-fit ​​member 623 to engage with the load cell 200.

[0120] The connector 621 and the snap-fit ​​member 623 can move smoothly within their respective sliding holes, while the second receiving cavity 611 provides ample space for the second elastic member 630 and the second sliding member 640 to move.

[0121] The second elastic element 630 is sleeved around the connector 621 located in the second receiving cavity 611. One end of the elastic element 630 is fixedly connected to the snap-fit ​​element 623, and the other end is fixedly connected to the base 610, thereby establishing an elastic connection between the connector 621 and the snap-fit ​​element 623. When an external force is applied to the force-applying element 622, the connector 621 slides relative to the base 610 and compresses the second elastic element 630. At this time, the second elastic element 630 stores elastic potential energy. Simultaneously, the sliding of the connector 621, through its fixed connection with the snap-fit ​​element 623, causes the snap-fit ​​element 623 to move, disengaging the snap-fit ​​element 623 from the load cell 200. During this process, the operator only needs to apply external force to the force-applying element 622 to easily disassemble the load cell 200. When the force-applying component 622 loses external force, the compressed second elastic component 630 automatically extends and releases the stored elastic potential energy. The elastic potential energy is converted into the kinetic energy of the connecting component 621, causing the connecting component 621 to slide in the opposite direction relative to the base 610. Then, through the connection relationship between the connecting component 621 and the snap-fit ​​component 623, the snap-fit ​​component 623 is moved to the position where it snaps into the load cell 200, thereby realizing the automatic reset and snap-fit ​​fixation of the load cell 200.

[0122] The second sliding member 640 is fixedly connected to the periphery of the snap-fit ​​member 623 located in the second receiving cavity 611 and is slidably connected to the cavity wall of the second receiving cavity 611. In this way, the second sliding member 640 slides along the cavity wall during the movement of the snap-fit ​​member 623, providing a stable guiding effect for the snap-fit ​​member 623, preventing the snap-fit ​​member 623 from deviating or shaking during the movement, and ensuring that the snap-fit ​​member 623 can accurately snap into or disengage from the weighing sensor 200.

[0123] Therefore, the fixing mechanism 600 not only makes the disassembly of the load cell 200 more convenient and efficient, but also enables the rapid installation of the load cell 200 through the automatic reset function of the second elastic element 630. At the same time, the guiding function of the second sliding element 640 ensures the accuracy and reliability of the snap-fit, effectively avoiding the problem of the load cell 200 falling off due to loose snap-fit ​​during use.

[0124] Of course, in addition to including the second elastic element 630, in some other possible implementations, the fixing mechanism 600 may not include the second elastic element 630. In this case, force can be applied directly to the force-applying element 622 so that the force-applying element 622 pushes the snap-fit ​​element 623 to snap into the weighing sensor 200.

[0125] In some embodiments, the second elastic element 630 may be a component with elastic deformation capability, such as a compression spring, disc spring, wave spring, or rubber elastomer.

[0126] In some embodiments, the second slider 640 may be configured as a slider, a sleeve, or a roller structure.

[0127] In some embodiments, the first sliding hole 612 and the second sliding hole 613 can be in the shape of a regular shape such as a circle, an ellipse or a rectangle, or they can be in an irregular shape.

[0128] In some possible implementations, such as Figure 1 and Figure 2 As shown, the medical bed also includes an infrared sensor 700, an alarm 800, and a controller. The infrared sensor 700 is mounted on the bed frame 100 and is used to detect infrared signals. The alarm 800 is mounted on the bed frame 100 and is used to issue a warning message. The controller is communicatively connected to the weighing sensor 200, the infrared sensor 700, and the alarm 800. The controller is used to control the alarm 800 to issue a warning message when the weight of the bed board 300 is lower than a preset weight and the infrared signal meets preset conditions.

[0129] By installing an infrared sensor 700 and an alarm 800 on the bed frame 100, and connecting the weighing sensor 200, infrared sensor 700, and alarm 800 through a controller, a multi-detection mechanism for bed exit alarm function is achieved. Specifically, when the patient leaves the bed board 300, the weighing sensor 200 detects that the weight of the bed board 300 is lower than a preset weight, and at the same time, the infrared signal detected by the infrared sensor 700 meets a preset condition. Only after the controller comprehensively determines that both conditions are met will it control the alarm 800 to issue a prompt message.

[0130] This dual detection mechanism effectively avoids false alarms that may occur with single-sensor detection. For example, when a patient merely turns over or adjusts their position in bed, although the weighing sensor 200 may detect a change in weight, the infrared sensor 700 can still detect the patient's infrared signal. In this case, the controller determines that the patient has not actually left the bed and therefore will not trigger the alarm 800. Similarly, when a heavy object is placed on the bed board 300, although the weighing sensor 200 detects the weight, the infrared sensor 700 cannot detect the human infrared signal, and the controller will again not mistakenly determine that the patient is in bed.

[0131] Therefore, the embodiments of this application can accurately distinguish whether a patient has actually left the bed, reduce the false alarm rate, improve the accuracy and reliability of bed leave detection, enable medical staff to more accurately grasp the patient's status, and avoid the waste of resources and interference with the patient's rest caused by frequent false alarms.

[0132] In some embodiments, the infrared sensor 700 may be a passive infrared sensor used to detect infrared radiation signals emitted by the human body. When a human infrared signal is detected, it indicates that there is a patient on the bed board 300; when no human infrared signal is detected, it indicates that there is no patient on the bed board 300. The preset condition can be set to not detect an infrared signal, that is, when the weighing sensor 200 detects that the weight of the bed board 300 is lower than a preset weight, and the infrared sensor 700 does not detect an infrared signal, the controller controls the alarm 800 to issue a prompt message.

[0133] In some embodiments, the infrared sensor 700 may be an active infrared sensor that detects the presence of a patient by emitting an infrared beam and receiving reflected signals. Preset conditions may be set such that the infrared beam is not blocked or the reflected signal intensity is below a threshold, indicating that the patient has left the bed board 300.

[0134] In some embodiments, the preset weight can be dynamically adjusted based on the patient's actual weight. The controller can record the weight detected by the weighing sensor 200 as a baseline weight when the patient first lies on the bed board 300. The preset weight can be set as a certain percentage of the baseline weight, for example, between 70% and 90%. When the detected weight is lower than the preset weight, it is determined that the patient may need to get out of bed.

[0135] In some embodiments, multiple infrared sensors 700 can be installed and distributed at different locations on the bed frame 100 to achieve comprehensive monitoring of different areas of the bed board 300. The controller can comprehensively evaluate the detection results of multiple infrared sensors 700 to further improve the accuracy of detection.

[0136] In some embodiments, the alarm 800 may take the form of a buzzer, speaker, or indicator light, or a combination of these forms. The alert information may include audible alerts, visual alerts, or a combination of both, to suit different usage scenarios and needs.

[0137] In some embodiments, the controller can communicate with the monitoring system of the nurse station. When an alarm is triggered, not only will the local alarm 800 sound an alarm, but an alarm message will also be sent to the nurse station, so that medical staff can be informed of the patient's status of leaving the bed in a timely manner.

[0138] In some possible implementations, such as Figure 1 and Figure 2 As shown, the medical bed may also include a display panel 900, which can be mounted on the bed frame 100. The display panel 900 can communicate with the controller and can be used to display weight information, infrared information, etc.

[0139] In some possible implementations, the medical bed may also include casters fixedly connected to the bottom of the bed frame 100, enabling the medical bed to move.

[0140] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A medical bed, characterized in that, include: Bed frame (100); A weighing sensor (200) is disposed on the bed frame (100); A bed board (300) is mounted on a weighing sensor (200), the weighing sensor (200) is used to detect the weight of the bed board (300), and the bed board (300) can move in the vertical direction; At least one buffer mechanism (400) includes a support component (410) and a buffer component (420) connected to the support component (410), the support component (410) being connected to the bed board (300), and the buffer component (420) connecting the support component (410) to the bed frame (100), wherein both the support component (410) and the buffer component (420) are located on the side of the bed board (300) facing the weighing sensor (200); The bed board (300) moves along the vertical direction and drives the bearing assembly (410) to move along the vertical direction, so that the buffer assembly (420) is compressed or extended in the horizontal direction.

2. The medical bed according to claim 1, characterized in that, The buffer mechanism (400) further includes a housing (430), which is disposed on the bed frame (100). The housing (430) has a first receiving cavity (431) inside and a through hole (432) communicating with the first receiving cavity (431) on the housing (430). The through hole (432) is disposed along the vertical direction. The support component (410) is inserted into the through hole (432), and a portion of the support component (410) is located in the first receiving cavity (431). The support component (410) can slide within the through hole (432). One end of the buffer assembly (420) is fixedly connected to the housing (430), the other end of the buffer assembly (420) is slidably connected to the housing (430), and the other end of the buffer assembly (420) is connected to the bearing assembly (410) located in the first receiving cavity (431).

3. The medical bed according to claim 2, characterized in that, The buffer component (420) includes: At least two push blocks (421) are slidably connected to the housing (430) and connected to the support assembly (410); At least two first elastic elements (422) are provided, each corresponding to a push block (421). One end of each first elastic element (422) is fixedly connected to the housing (430), and the other end of each first elastic element (422) is fixedly connected to the push block (421). The supporting component (410) slides along the vertical direction to drive the pusher (421) to slide along the horizontal direction, so that the first elastic element (422) is compressed or extended.

4. The medical bed according to claim 3, characterized in that, The push block (421) has a first contact surface (423), and the first contact surface (423) has an angle with the horizontal direction; The bearing component (410) has a second contact surface (411), which has an angle with the horizontal direction; One of the first contact surface (423) and the second contact surface (411) has a limiting groove (424), and the other has a guide (412). The guide (412) is located in the limiting groove (424) and can slide along the limiting groove (424).

5. The medical bed according to claim 3, characterized in that, The buffer mechanism (400) further includes a first slide rail (440), which is fixedly connected to the housing (430), and the push block (421) is slidably connected to the first slide rail (440).

6. The medical bed according to claim 2, characterized in that, The carrier component (410) includes: The first sliding member (413) is inserted into the through hole (432), and a portion of the first sliding member (413) is located in the first receiving cavity (431). The first sliding member (413) can slide within the through hole (432). Force transmission component (414), which is fixedly connected to the first sliding component (413) and connected to the buffer assembly (420); The first sliding member (413) slides along the vertical direction to drive the force transmission member (414) to move along the vertical direction and drive the buffer assembly (420) to compress or extend along the horizontal direction.

7. The medical bed according to any one of claims 1-6, characterized in that, It also includes at least two second slide rails (500), which are fixedly connected to the bed frame (100), and the bed board (300) is slidably connected to the second slide rails (500).

8. The medical bed according to any one of claims 1-6, characterized in that, It also includes a fixing mechanism (600), which includes: A base (610) is fixedly connected to the bed frame (100); The snap-fit ​​assembly (620) includes a connector (621), a force-applying component (622), and a snap-fit ​​component (623). The connector (621) is slidably connected to the base (610), the force-applying component (622) is fixedly connected to one end of the connector (621), and the snap-fit ​​component (623) is fixedly connected to the other end of the connector (621). The snap-fit ​​component (623) snaps into the weighing sensor (200). When an external force is applied to the force-applying member (622), the connecting member (621) slides relative to the base (610) to drive the snap-fit ​​member (623) to disengage from the weighing sensor (200).

9. The medical bed according to claim 8, characterized in that, The base (610) has a second receiving cavity (611) inside, and the base (610) has a first sliding hole (612) and a second sliding hole (613) communicating with the second receiving cavity (611). The connector (621) is inserted into the first sliding hole (612), and part of the connector (621) is located in the second receiving cavity (611). The snap-fit ​​(623) is inserted into the second sliding hole (613), and part of the snap-fit ​​(623) is located in the second receiving cavity (611). The fixing mechanism (600) further includes a second elastic element (630) and a second sliding element (640). The second elastic element (630) is sleeved on the periphery of the connector (621) located in the second receiving cavity (611). One end of the second elastic element (630) is fixedly connected to the snap-fit ​​element (623), and the other end of the second elastic element (630) is fixedly connected to the base (610). The second sliding element (640) is fixedly connected to the periphery of the snap-fit ​​element (623) located in the second receiving cavity (611), and the second sliding element (640) is slidably connected to the cavity wall of the second receiving cavity (611). When an external force is applied to the force-applying member (622), the connecting member (621) slides relative to the base (610) to compress the second elastic member (630) and cause the snap-fit ​​member (623) to disengage from the weighing sensor (200); When the force-applying member (622) loses external force, the second elastic member (630) extends to drive the connector (621) to slide relative to the base (610) and drive the snap-fit ​​member (623) to snap into the weighing sensor (200).

10. The medical bed according to any one of claims 1-6, characterized in that, Also includes: An infrared sensor (700) is disposed on the bed frame (100) and is used to detect infrared signals; An alarm (800) is mounted on the bed frame (100) and is used to issue a warning message; The controller is communicatively connected to the weighing sensor (200), the infrared sensor (700) and the alarm (800). The controller is used to control the alarm (800) to issue the prompt information when the weight of the bed board (300) is lower than the preset weight and the infrared signal meets the preset conditions.

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