Locking device for a medical bed and medical bed

Abstract

The utility model provides a kind of locking device and medical bed of medical bed, belong to medical instrument field, the locking device of this medical bed includes spigot and locking mechanism, spigot is installed with the head of medical bed, bed tail or guardrail, and the bottom end of spigot is equipped with spacing arrangement from top to bottom in order limit boss and clamping boss, limit groove is formed between limit boss and clamping boss;Locking mechanism includes locking piece and spring, locking piece is swingably arranged in the bedstead of medical bed, the swing axis of locking piece is perpendicular to spigot, the bottom end of spigot can be inserted between locking piece and bedstead, the side of locking piece bottom end face to bedstead is equipped with locking head, spring has the pre-tightening force of locking piece swing and makes locking head close to bedstead, with the insertion of spigot, locking piece is clamped in limit groove overcoming the pre-tightening force of spring. Compared with prior art, the utility model solves the technical problem that the conventional medical bed component fixing mode is complicated and not easy to adjust.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, and more specifically, it relates to a locking device for a medical bed. This utility model also relates to a medical bed. Background Technology

[0002] As core nursing equipment in hospitals, nursing homes, and other institutions, the functionality and safety of medical beds are of paramount importance. Modern medical beds typically feature adjustable headboards, footboards, and detachable guardrails to meet diverse clinical nursing needs, such as changing patient positions, facilitating patient entry and exit from bed, or performing emergency medical procedures. Therefore, the reliability and ease of use of the connection and locking mechanisms of these components directly impact the efficiency of nursing care and patient safety.

[0003] Currently, there are various locking methods for medical bed components on the market, but they all have some inherent defects. First, some traditional designs use bolts, screws, and other fasteners for connection. While this method is simple in structure, the disassembly and assembly process relies entirely on tools, making the operation cumbersome, time-consuming, and labor-intensive. This is extremely inconvenient when quick adjustments are needed or in response to emergencies, and may even delay operation due to lost tools. Second, some quick-release structures use a spring pin and pin hole combination. While this simplifies operation to some extent, its locking force is limited. Under the continuous vibration generated by frequent bed raising, lowering, and movement, the spring pin is at risk of accidentally dislodging, leading to loose connections and endangering patient safety. Furthermore, many locking devices have exposed structural designs and lack effective protection. In a medical environment, liquids, medication stains, dust, and other foreign objects can easily penetrate the mechanism, contaminating moving parts, causing spring jamming, sluggish movement, or even complete failure, significantly reducing the device's lifespan and reliability. Additionally, some locking mechanisms have unfriendly unlocking methods, either requiring excessive operating force, which is inconvenient for medical staff, or having unclear unlocking strokes, making it difficult to quickly locate and operate in emergencies.

[0004] Therefore, there is an urgent need in this field for a new type of medical bed locking device that can simultaneously meet the following key requirements: first, to achieve quick, tool-free assembly and disassembly to improve nursing efficiency; second, to ensure that the connection is absolutely stable after locking and can effectively resist vibration and impact; third, to have good anti-pollution capabilities and adapt to complex medical environments; and fourth, to have an intuitive, labor-saving and safe operating experience. Utility Model Content

[0005] The purpose of this invention is to provide a locking device for a medical bed, so as to solve the technical problems of cumbersome and difficult-to-adjust traditional medical bed component fixing methods.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a locking device for a medical bed, comprising: A plug-in rod is installed on the headboard, footboard, or guardrail of a medical bed, and the bottom end of the plug-in rod is provided with limiting protrusions and locking protrusions arranged sequentially from top to bottom, forming a limiting groove between the limiting protrusions and the locking protrusions; A locking mechanism includes a locking member and a spring. The locking member is swayably mounted on the bed frame of the medical bed. The swaying axis of the locking member is perpendicular to the plug rod. The bottom end of the plug rod can be inserted between the locking member and the bed frame. A locking head is provided on the side of the bottom end of the locking member facing the bed frame. The spring has a preload force that causes the locking member to sway and the locking head to approach the bed frame. As the plug rod is inserted, the locking member overcomes the preload force of the spring, and the locking head engages with the limiting groove.

[0007] In one feasible implementation, a lever is integrally formed on the side of the locking member away from the bed frame. When the lever is turned, the locking member swings around its own swing axis against the preload of the spring.

[0008] In one possible implementation, the spring is configured as a coil spring, the axis of which is parallel to the swing axis.

[0009] In one feasible implementation, the bottom end of the snap-fit ​​protrusion is provided with a guide slope that can slide into contact with the locking head.

[0010] In one feasible implementation, the locking device of the medical bed further includes a mounting frame installed on the bed frame, the locking member is swayably disposed on the mounting frame, the plug rod is locked between the locking member and the mounting frame, and the two ends of the coil spring are respectively connected to the mounting frame and the locking member.

[0011] In one feasible implementation, the locking device of the medical bed further includes a protective shell, with an installation space formed between the protective shell and the bed frame, and the plug rod, the locking element, and the spring are all located within the installation space.

[0012] In one feasible implementation, the protective shell has an operation window corresponding to the lever.

[0013] In one feasible implementation, there are two coil springs, located on opposite sides of the locking member along the axis of the swing shaft.

[0014] Compared with the prior art, the advantages of the locking device for the medical bed provided by this utility model are as follows: First, when the bottom end of the connector rod is inserted between the locking element and the bed frame, the locking head initially contacts the latching protrusion of the connector rod. As the insertion deepens, the locking element overcomes the preload of the spring and swings around its pivot axis, causing the locking head to slide past the latching protrusion and finally engage in the limiting groove, thus achieving automatic locking. When unlocking is required, the connector rod can be pulled out by externally moving the locking element to disengage the locking head from the limiting groove. This mechanism enables the connector rod to lock and unlock quickly and reliably, achieving a stable connection between the headboard, footboard, or guardrail of the medical bed, thereby solving the technical problem of medical bed components easily loosening or falling off during use.

[0015] Secondly, when the user needs to unlock, they can directly move the lever to make the locking part swing around the swing axis to overcome the preload of the spring, thereby driving the locking head out of the limit groove, making it easy to remove the plug rod. The above combination can provide an intuitive and labor-saving manual operation method, thereby achieving the technical effect of simplifying the unlocking process and improving the convenience of operation, and preventing the locking device from being inconvenient or inefficient in emergency situations.

[0016] Furthermore, the axis of the coil spring is parallel to the swing axis of the locking component. When the locking component swings, the coil spring provides a uniform preload, ensuring that the locking head always tends to move towards the bed frame, thus automatically engaging the limiting groove when the insertion rod is inserted. This combination makes the swinging motion of the locking component smoother and more controllable, enhances the consistency of locking force, improves the reliability of the device, and allows operators to observe the entire locking device's operation process based on changes in body sensation and visual judgment, ensuring that the locking device can stably lock the structure that needs to be locked.

[0017] Furthermore, the locking element is oscillatingly mounted on the mounting frame via a swing shaft. The mounting frame is fixed to the bed frame, and the connecting rod is positioned between the locking element and the mounting frame when locked. The two ends of the coil spring connect to the mounting frame and the locking element respectively, providing a stable preload. This modular design allows for easy installation and maintenance of the locking mechanism, thereby improving overall structural rigidity, ensuring precise locking position, and preventing installation inconveniences or damage to the structural strength of the bed frame that might occur if the locking mechanism were directly mounted on it.

[0018] Another objective of this invention is to provide a medical bed, including the locking device for the medical bed described above.

[0019] Compared to existing technologies, the medical bed of this invention possesses all the advantages of the locking device described above, which will not be elaborated upon here. Furthermore, the headboard, footboard, or guardrails of the medical bed are inserted into the locking mechanism on the bed frame via connecting rods. During insertion, the locking head automatically engages with the limiting groove to achieve locking. Adjustment is possible by quickly unlocking the locking mechanism by moving the locking element. This combination enables modular installation and flexible adjustment of the medical bed components, thereby improving assembly efficiency, enhancing usability, and solving the technical problems of cumbersome and difficult-to-adjust fixing methods in traditional medical bed components. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 An assembly diagram of the overall structure of the locking device for the medical bed provided by this utility model; Figure 2 A schematic diagram showing the positional relationship between the locking element and the plug rod in the locking device of the medical bed provided by this utility model; Figure 3 A schematic diagram showing the positional relationship between the locking element and the insertion rod in the locking device of the medical bed provided by this utility model from another perspective.

[0021] In the picture: 1. Connecting rod; 11. Limiting protrusion; 12. Snap-fit ​​protrusion; 13. Limiting groove; 2. Locking mechanism; 21. Locking element; 211. Locking head; 212. Paddle; 22. Spring; 3. Mounting frame; 4. Protective casing; 41. Operating window. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be noted that if terms such as "upper", "lower", "inner", "back" or indicating orientation or positional relationship appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0025] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Due to the lack of modularity in existing medical beds, there are technical problems such as cumbersome procedures and incompatibility of parts between different medical beds when changing the function of the medical bed by replacing the headboard, footboard and guardrail. In view of this, this application aims to design a locking device that can flexibly assemble medical bed parts with the medical bed frame to solve the above problems.

[0027] Next, please refer to the following: Figures 1 to 3 The locking device for the medical bed provided by this utility model will now be described. The locking device of the medical bed includes a plug rod 1 and a locking mechanism 2. The plug rod 1 is equipped with the headboard, footboard or guardrail of the medical bed, and the bottom end of the plug rod 1 is provided with a limiting protrusion 11 and a locking protrusion 12 arranged sequentially from top to bottom, forming a limiting groove 13 between the limiting protrusion 11 and the locking protrusion 12. The locking mechanism 2 includes a locking member 21 and a spring 22. The locking member 21 is swayably mounted on the bed frame of the medical bed. The swing axis of the locking member 21 is perpendicular to the plug rod 1. The bottom end of the plug rod 1 can be inserted between the locking member 21 and the bed frame. The bottom end of the locking member 21 facing the bed frame is provided with a locking head 211. The spring 22 has a preload force that causes the locking member 21 to swing and the locking head 211 to approach the bed frame. As the plug rod 1 is inserted, the locking member 21 overcomes the preload force of the spring 22, and the locking head 211 is locked in the limiting groove 13.

[0028] In the specific implementation process of the above embodiment, when the bottom end of the plug-in rod 1 is inserted between the locking member 21 and the bed frame, the locking head 211 first contacts the snap-fit ​​protrusion 12 of the plug-in rod 1. As the insertion goes deeper, the locking member 21 overcomes the preload of the spring 22 and swings around the swing axis, causing the locking head 211 to slide past the snap-fit ​​protrusion 12 and finally snap into the limiting groove 13, thus achieving automatic locking. When unlocking is required, the plug-in rod 1 can be pulled out by using external force to push the locking member 21 and disengaging the locking head 211 from the limiting groove 13. This cooperation enables the plug-in rod 1 to lock and unlock quickly and reliably, thereby achieving the technical effect of stably connecting the headboard, footboard, or guardrail of the medical bed, and thus solving the technical problem that medical bed components are prone to loosening or falling off during use.

[0029] Based on the above embodiments, a feasible implementation is proposed: a lever 212 is integrally formed on the side of the locking member 21 away from the bed frame. By levering the lever 212, the locking member 21 swings around its own swing axis, overcoming the preload of the spring 22. In this way, when the user needs to unlock, they can directly lever the lever 212 to make the locking member 21 swing around its swing axis, overcoming the preload of the spring 22, thereby driving the locking head 211 to exit from the limiting groove 13, facilitating the removal of the insertion rod 1. The above combination can provide an intuitive and labor-saving manual operation method, thereby achieving the technical effect of simplifying the unlocking process and improving the convenience of operation, and preventing the locking device from being inconvenient or inefficient in emergency situations.

[0030] Preferably, in one implementation, the spring 22 is configured as a coil spring, with its axis parallel to the swing axis. When the locking member 21 swings, the coil spring provides a uniform preload, ensuring that the locking head 211 always tends to move towards the bed frame, thus automatically engaging the limiting groove 13 when the insertion rod 1 is inserted. This coordination makes the swinging motion of the locking member 21 more stable and controllable, enhances the consistency of the locking force, improves the reliability of the device, and allows the operator to observe the entire locking device's operation process based on changes in body sensation and visual judgment, ensuring that the locking device can stably lock the structure that needs to be locked.

[0031] In one feasible implementation, the bottom end of the snap-fit ​​protrusion 12 is provided with a guide slope that can slide into contact with the locking head 211. When the insertion rod 1 is inserted, the guide slope at the bottom end of the snap-fit ​​protrusion 12 slides into contact with the locking head 211. With the cooperation of the spring 22, the guide locking head 211 smoothly moves upward along the slope and passes over the snap-fit ​​protrusion 12, finally falling into the limiting groove 13, reducing friction and resistance during the insertion process. This cooperation makes the insertion action of the insertion rod 1 smoother and less strenuous, thereby reducing operator fatigue and component wear.

[0032] In addition to the above-mentioned feasible implementations, in a more preferred embodiment, the locking device of the medical bed further includes a mounting frame 3 installed on the bed frame, a locking member 21 swayably disposed on the mounting frame 3, a plug rod 1 locked between the locking member 21 and the mounting frame 3, and the two ends of the coil spring connected to the mounting frame 3 and the locking member 21 respectively.

[0033] In one feasible embodiment, the locking device of the medical bed further includes a protective shell 4. An installation space is formed between the protective shell 4 and the bed frame. The connecting rod 1, the locking element 21, and the spring 22 are all located within this installation space, which accommodates them to prevent external objects from interfering with the locking action. This effectively protects the locking mechanism 2 from environmental pollution and physical damage, thereby extending the device's lifespan and ensuring safe use. The material of the protective shell 4 can be flexibly chosen based on the material of the headboard, footboard, or guardrail, and is not limited thereto.

[0034] In one feasible implementation, the protective shell 4 has an operation window 41 corresponding to the lever 212. The operation window 41 on the protective shell 4 corresponds to the position of the lever 212 on the locking member 21. The user can directly move the lever 212 through the operation window 41 without disassembling the protective shell 4, thereby driving the locking member 21 to swing and unlock. This combination provides a convenient external operation interface, improves user experience, reduces maintenance time, and helps solve the technical problem that the design of the protective shell 4 may obstruct the operation path and affect emergency unlocking.

[0035] In one feasible implementation, two coil springs are used, positioned along the axis of the swing shaft, on opposite sides of the locking member 21. When the locking member 21 swings, the coil springs on both sides simultaneously provide a balanced preload, ensuring uniform force on the locking member 21 and preventing unilateral deviation. This combination enhances the swing stability and return accuracy of the locking member 21, improves locking precision, and reduces component fatigue damage.

[0036] Based on the same inventive concept, another objective of this utility model is to provide a medical bed that includes the locking device for the medical bed described above.

[0037] Compared to existing technologies, the medical bed of this invention possesses all the advantages of the locking device described above, which will not be elaborated upon here. Furthermore, the headboard, footboard, or guardrail of the medical bed are inserted into the locking mechanism 2 on the bed frame via a connecting rod 1. During insertion, the locking head 211 automatically engages with the limiting groove 13 to achieve locking. Adjustment is possible by quickly unlocking the device by moving the locking element 21. This combination enables modular installation and flexible adjustment of the medical bed components, thereby improving assembly efficiency, enhancing usability, and solving the technical problems of cumbersome and difficult-to-adjust fixing methods in traditional medical bed components.

[0038] In summary, the aforementioned medical bed locking device achieves superior overall performance through the ingenious cooperation between the plug-in rod 1 and the locking mechanism 2. Specifically, when the bottom end of the plug-in rod 1, installed at the head, foot, or guardrail, is inserted into the bed frame, the guide slope of its locking protrusion 12 contacts the locking head 211 of the locking member 21, forcing the locking member 21 to swing outward against the preload of the coil spring. After the locking head 211 slides past the locking protrusion 12, driven by the restoring force of the coil spring, the locking member 21 quickly swings back, causing the locking head 211 to precisely engage in the limiting groove 13 formed by the limiting protrusion 11 and the locking protrusion 12, completing automatic and reliable locking. This process requires no additional tools, and a single insertion achieves a secure locking with auditory and tactile feedback. When disassembly is required, the user only needs to move the lever 212, which is integrally formed with the locking component 21, through the operating window 41 on the protective shell 4. This easily overcomes the preload of the spring 22, causing the locking head 211 to disengage from the limiting groove 13, thereby allowing the plug-in rod 1 to be pulled out. This combination enables quick disassembly and secure locking of the medical bed components. Its modular design (achieved through the mounting frame 3) facilitates production and maintenance, while the symmetrical arrangement of the double coil springs ensures balanced force and smooth movement during the swinging process. This achieves a comprehensive technical effect of extremely simple operation, stable and reliable connection, durable structure, and high safety. This series of designs effectively solves the technical problems of traditional medical bed component connections, such as cumbersome and laborious operation, easy loosening of the lock, risk of disengagement under vibration or emergency, and decreased reliability due to structural wear or foreign object intrusion after long-term use. It is particularly suitable for medical care environments with extremely high requirements for efficiency and safety.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking device for a medical bed, characterized in that, include: The plug rod (1) is equipped with the headboard, footboard or guardrail of the medical bed, and the bottom end of the plug rod (1) is provided with a limiting protrusion (11) and a snap-fit ​​protrusion (12) arranged sequentially from top to bottom, and a limiting groove (13) is formed between the limiting protrusion (11) and the snap-fit ​​protrusion (12). The locking mechanism (2) includes a locking member (21) and a spring (22). The locking member (21) is swayably mounted on the bed frame of the medical bed. The swing axis of the locking member (21) is perpendicular to the plug rod (1). The bottom end of the plug rod (1) can be inserted between the locking member (21) and the bed frame. The bottom end of the locking member (21) is provided with a locking head (211) on the side facing the bed frame. The spring (22) has a preload force that causes the locking member (21) to swing and the locking head (211) to approach the bed frame. As the plug rod (1) is inserted, the locking member (21) overcomes the preload force of the spring (22) and is engaged in the limiting groove (13).

2. The locking device for the medical bed as described in claim 1, characterized in that, The locking member (21) has a paddle (212) integrally formed on the side away from the bed frame. When the paddle (212) is moved, the locking member (21) swings around its own swing axis against the preload of the spring (22).

3. The locking device for the medical bed as described in claim 2, characterized in that, The spring (22) is configured as a coil spring, the axis of which is parallel to the swing axis.

4. The locking device for the medical bed as described in claim 1, characterized in that, The bottom end of the snap-fit ​​protrusion (12) is provided with a guide slope that can slide in contact with the locking head (211).

5. The locking device for the medical bed as described in claim 3, characterized in that, The locking device of the medical bed also includes a mounting frame (3) installed on the bed frame, the locking member (21) is swayably disposed on the mounting frame (3), the plug rod (1) is locked between the locking member (21) and the mounting frame (3), and the two ends of the coil spring are respectively connected to the mounting frame (3) and the locking member (21).

6. The locking device for the medical bed as described in claim 3, characterized in that, The locking device of the medical bed also includes a protective shell (4), which forms an installation space with the bed frame. The plug rod (1), the locking member (21) and the spring (22) are all located in the installation space.

7. The locking device for the medical bed as described in claim 6, characterized in that, The protective shell (4) has an operation window (41) corresponding to the lever (212).

8. The locking device for the medical bed as described in claim 3, characterized in that, There are two coil springs, which are located on both sides of the locking member (21) along the axis of the swing shaft.

9. A medical bed, characterized in that, The locking device includes the medical bed as described in any one of claims 1 to 8.

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