Locking device for nursing bed and nursing bed

Abstract

The utility model relates to the technical field of nursing beds, and discloses a locking device for a nursing bed. The locking device comprises a first rotary drum, a second rotary drum, a first locking piece and a second locking piece. A slot is formed in the bottom of the first drum; the second rotary drum is rotationally arranged on the lower side of the first rotary drum; the first locking piece penetrates through the first rotary drum to extend into the second rotary drum, is provided with an inserting piece which is located in the second rotary drum and can be connected with the inserting groove in an inserting mode, is in sliding connection with the first rotary drum and is provided with a protruding block; the second locking piece is rotationally arranged in the second rotating cylinder, arranged on the outer side of the first locking piece in a sleeving mode and provided with a spiral hole connected with the protruding block in a sliding mode, and the friction force between the second locking piece and the second rotating cylinder is larger than the friction force between the protruding block and the spiral hole. According to the utility model, the risk that the handrail is touched by mistake and shakes after being opened is reduced, and the risk that the handrail collides with the bed body and surrounding people is reduced. The invention further discloses a nursing bed.

Description

Technical Field

[0001] This application relates to the field of nursing bed technology, such as a locking device for a nursing bed and a nursing bed. Background Technology

[0002] Currently, nursing beds are specially designed to facilitate the care of people with limited mobility or requiring special attention, such as the elderly, patients, and people with disabilities. Nursing beds are equipped with railings around their sides to reduce the risk of people falling out. However, the railings on nursing beds are relatively fixed, making it difficult for users to get out of bed, resulting in a poor user experience.

[0003] A related technology includes a connection structure for a nursing bed, comprising: a first connector connected to the bed frame, and a second connector connected to the railings, with the first and second connectors rotatably connected. With the cooperation of the first and second connectors, the railings rotate relative to the bed frame, thereby opening the railings and facilitating the user's exit from the bed, thus improving the user experience.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Once the railing is open, it is easy for it to be accidentally touched, causing it to rotate and posing a significant risk of collision with the bed and people around it.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a locking device for a nursing bed and a nursing bed to reduce the risk of the railings being accidentally touched and shaken after being opened, and to reduce the risk of the railings colliding with the bed and surrounding people.

[0009] In some embodiments, the locking device for a nursing bed includes: a first rotating cylinder, a second rotating cylinder, a first locking member, and a second locking member. The first rotating cylinder has a slot at its bottom; the second rotating cylinder is rotatably disposed below the first rotating cylinder; the first locking member extends through the first rotating cylinder into the second rotating cylinder and has a connector located within the second rotating cylinder that can be inserted into the slot; the first locking member is slidably connected to the first rotating cylinder and has a protrusion; the second locking member is rotatably disposed within the second rotating cylinder and sleeved on the outside of the first locking member, and has a spiral hole slidably connected to the protrusion, and the frictional force between the second locking member and the second rotating cylinder is greater than the frictional force between the protrusion and the spiral hole.

[0010] Optionally, the first locking element includes an extension rod and a connecting plate. The extension rod extends through the first rotating cylinder into the second rotating cylinder, and the extension rod is provided with a protrusion; the connecting plate is slidably disposed in the second rotating cylinder and fixedly connected to the extension rod, and the plug-in element is a plug-in rod fixedly connected to the connecting plate.

[0011] Optionally, the inner wall of the first rotating drum is provided with a sliding key, and the extension rod is provided with a keyway that is slidably connected to the sliding key.

[0012] Optionally, a pressing plate is fixedly provided at the top of the extension rod, and a groove is provided at the top of the first rotating cylinder, with the pressing plate movably disposed in the groove.

[0013] Optionally, the second locking element is a sleeve, and the bottom of the second rotating cylinder is provided with a limiting arc plate, and the bottom of the sleeve is rotatably connected to the limiting arc plate.

[0014] Optionally, the second rotating drum is provided with an elastic element, one end of which abuts against the first rotating drum, and the other end of which abuts against the first locking element.

[0015] Optionally, the locking device for the nursing bed further includes a third rotating drum. The third rotating drum is rotatably configured with respect to the second rotating drum and is connected to the first rotating drum.

[0016] Optionally, a connecting rod is provided on one side of the second rotating drum.

[0017] In some embodiments, the nursing bed includes a locking device for the nursing bed as described in the above embodiments.

[0018] Optionally, the nursing bed also includes: fixed railings and rotating railings. The fixed railings are fixedly connected to the second rotating cylinder; the rotating railings are fixedly connected to the first rotating cylinder.

[0019] The locking device and nursing bed provided in this disclosure can achieve the following technical effects:

[0020] One of the first and second rotating cylinders is connected to a fixed railing of the nursing bed, while the other is connected to a movable railing. The first and second rotating cylinders rotate in coordination, allowing the movable railing to open for easy access to the nursing bed. When the movable railing has rotated from closed to a preset angle, pressing down on the first locking member causes it to slide relative to the first rotating cylinder towards the second rotating cylinder. This causes the connector to slide out of its slot, releasing the restriction on the relative sliding of the first and second rotating cylinders. Simultaneously, the protrusion slides within the spiral hole, causing the second locking member to rotate relative to the second rotating cylinder. Rotating the movable railing again causes the first rotating cylinder to rotate relative to the second rotating cylinder, simultaneously rotating the first locking member, the protrusion, and the connector. The protrusion then rotates within the spiral hole, causing the first locking member to slide relative to the first rotating cylinder, and the connector to insert into one of the slots. The engagement of the connector and slot restricts the relative sliding of the first and second rotating cylinders, reducing the risk of accidental movement and collisions between the railing and the bed frame or surrounding personnel.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is a schematic diagram of a locking device for a nursing bed provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of the internal structure of a locking device for a nursing bed provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of the internal structure of a locking device for a nursing bed provided in an embodiment of this disclosure;

[0026] Figure 4 This is an exploded view of a locking device structure for a nursing bed provided in an embodiment of this disclosure;

[0027] Figure 5 This is an exploded view of the other side of a structural schematic diagram of a locking device for a nursing bed provided in an embodiment of this disclosure;

[0028] Figure 6 This is an exploded view of another locking device structure for a nursing bed provided in this disclosure embodiment;

[0029] Figure 7 This is an exploded view of another locking device structure for a nursing bed provided in this disclosure embodiment;

[0030] Figure 8 This is an exploded view of another locking device structure for a nursing bed provided in this disclosure embodiment;

[0031] Figure 9 This is a schematic diagram of the structure of a nursing bed provided in an embodiment of this disclosure.

[0032] Figure label:

[0033] 100. First rotating cylinder; 101. Slot; 110. Sliding key; 120. Groove; 200. Second rotating cylinder; 210. First cylindrical section; 220. Second cylindrical section; 230. Connecting shaft; 240. Connecting rod; 300. First locking element; 310. Insertion element; 311. Insertion rod; 320. Protrusion; 330. Extension rod; 331. Keyway; 340. Connecting disc; 350. Pressing plate; 400. Second locking element; 410. Spiral hole; 420. Sleeve; 421. Annular protrusion; 430. Limiting arc plate; 500. Elastic element; 510. Spring; 600. Third rotating cylinder; 710. Fixed railing; 720. Rotating railing. Detailed Implementation

[0034] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0036] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; 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 an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Unless otherwise stated, the term "multiple" means two or more.

[0039] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0040] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0042] Combination Figure 1-3As shown, this embodiment of the present disclosure provides a locking device for a nursing bed, including: a first rotating cylinder 100, a second rotating cylinder 200, a first locking member 300, and a second locking member 400. The first rotating cylinder 100 has a slot 101 at its bottom; the second rotating cylinder 200 is rotatably disposed below the first rotating cylinder 100; the first locking member 300 extends through the first rotating cylinder 100 into the second rotating cylinder 200, and has a connector 310 located within the second rotating cylinder 200 that can be inserted into the slot 101; the first locking member 300 is slidably connected to the first rotating cylinder 100, and has a protrusion 320; the second locking member 400 is rotatably disposed within the second rotating cylinder 200 and sleeved on the outside of the first locking member 300, and has a spiral hole 410 slidably connected to the protrusion 320; the frictional force between the second locking member 400 and the second rotating cylinder 200 is greater than the frictional force between the protrusion 320 and the spiral hole 410.

[0043] The locking device for a nursing bed provided in this embodiment has one of the first rotating cylinder 100 and the second rotating cylinder 200 connected to a fixed railing of the nursing bed, and the other connected to a movable railing of the nursing bed. The first rotating cylinder 100 and the second rotating cylinder 200 rotate in conjunction, allowing the movable railing to be opened, facilitating the user's entry and exit from the nursing bed. When the movable railing is rotated from closed to a preset angle, the first locking member 300 is pressed downwards, causing it to slide relative to the first rotating cylinder 100 toward the second rotating cylinder 200. The insert 310 then slides out of the slot 101, releasing the restriction on the relative sliding of the first rotating cylinder 100 and the second rotating cylinder 200 by the insert 310 and the slot 101. Furthermore, the protrusion 320 slides within the spiral hole 410, causing the second locking member 400 to rotate relative to the second rotating cylinder 200. The movable railing is then rotated, causing the first rotating cylinder 100 to rotate relative to the second rotating cylinder 200. Simultaneously, the first locking member 300, the protrusion 320, and the connector 310 rotate. The protrusion 320 then rotates within the spiral hole 410, causing the first locking member 300 to slide relative to the first rotating cylinder 100. The connector 310 then inserts into one of the slots 101. The connector 310 and the slot 101 work together to restrict the relative sliding of the first rotating cylinder 100 and the second rotating cylinder 200, reducing the risk of the railing being accidentally activated and shaken after being opened, and reducing the risk of the railing colliding with the bed frame and surrounding personnel.

[0044] Specifically, the projection of the first rotating drum 100 toward the second rotating drum 200 is an annular shape.

[0045] Specifically, the maximum diameter of the first rotating drum 100 is the same as the maximum diameter of the second rotating drum 200.

[0046] Combination Figure 4 and Figure 5As shown, optionally, the first locking member 300 includes an extension rod 330 and a connecting plate 340. The extension rod 330 extends through the first rotating cylinder 100 into the second rotating cylinder 200, and a protrusion 320 is provided on the extension rod 330; the connecting plate 340 is slidably disposed in the second rotating cylinder 200 and fixedly connected to the extension rod 330, and the plug-in member 310 is a plug-in rod 311 fixedly connected to the connecting plate 340. In this way, the connecting plate 340 is slidably connected within the second rotating cylinder 200, providing guidance and limiting for the extension rod 330 and the plug-in rod 311, reducing the risk of offset and wobbling of the extension rod 330 and the plug-in rod 311. The extension rod 330 slides relative to the first rotating drum 100, thereby driving the connecting plate 340 to slide in the second rotating drum 200, and the protrusion 320 slides in the spiral hole 410. The protrusion 320 and the spiral hole 410 cooperate to drive the extension rod 330, the connecting plate 340 and the plug rod 311 to rotate relative to the first rotating drum 100.

[0047] Optionally, two plug-in rods 311 are provided, both of which are fixedly connected to the connecting plate 340. The two plug-in rods 311 can be inserted into two of the slots 101. In this way, the number of plug-in rods 311 is relatively large, the number of fixed positions that can be inserted is relatively large, and the insertion stability is relatively high.

[0048] Optionally, there are twelve slots 101. This results in a relatively large number of slots 101, providing a relatively large number of insertion points for the connector 311.

[0049] Specifically, the connecting plate 340 has a disc-shaped structure, and the outer wall of the connecting plate 340 slides against the inner wall of the second rotating cylinder 200. In this way, the sliding contact between the outer wall of the connecting plate 340 and the inner wall of the second rotating cylinder 200 can provide guidance and limit for the extension rod 330 and the insertion rod 311, reducing the risk of the extension rod 330 and the insertion rod 311 shifting or wobbling.

[0050] Optionally, the inner wall of the first rotating drum 100 is provided with a sliding key 110, and the extension rod 330 is provided with a keyway 331 that is slidably connected to the sliding key 110. In this way, the sliding key 110 and the keyway 331 can slide relative to each other, providing guidance for the extension rod 330 to slide within the first rotating drum 100. Furthermore, the sliding key 110 and the keyway 331 cooperate to drive the extension rod 330 to rotate when the first rotating drum 100 rotates.

[0051] Specifically, the length of keyway 331 is greater than the length of slide key 110.

[0052] Optionally, a pressing plate 350 is fixedly provided at the top of the extension rod 330, and a groove 120 is provided at the top of the first rotating cylinder 100, with the pressing plate 350 movably disposed within the groove 120. This provides a relatively large area for the pressing plate 350, facilitating forceful pressing by the user, which in turn causes the extension rod 330 to slide relative to the first rotating cylinder 100. This also causes the connecting plate 340 and the insertion rod 311 to move, allowing the insertion rod 311 to slide out of the slot 101, releasing the restriction and locking of the first rotating cylinder 100. Furthermore, the protrusion 320 and the spiral hole 410 cooperate to rotate the extension rod 330 and the first rotating cylinder 100.

[0053] Combination Figure 6 As shown, optionally, the second locking member 400 is a sleeve 420, and the bottom of the second rotating cylinder 200 is provided with a limiting arc plate 430, the bottom of the sleeve 420 being rotatably connected to the limiting arc plate 430. In this way, the sleeve 420 can rotate relative to the limiting arc plate 430, and the limiting arc plate 430 provides a limit for the sleeve 420, reducing the risk of the sleeve 420 separating from the bottom of the second rotating cylinder 200.

[0054] Optionally, the bottom of the sleeve 420 is provided with an annular protrusion 421, which is rotatably connected to the limiting arc plate 430. In this way, the annular protrusion 421 cooperates with the limiting arc plate 430 to reduce the risk of the sleeve 420 separating from the bottom of the second rotating cylinder 200.

[0055] Specifically, the sleeve 420 is provided with a spiral hole 410.

[0056] Optionally, two protrusions 320 and two spiral holes 410 are provided, with each protrusion 320 slidably connected to one spiral hole 410. In this way, the number of protrusions 320 and spiral holes 410 is relatively large, resulting in relatively high stability.

[0057] Optionally, two limiting arc plates 430 are provided, and both limiting arc plates 430 are fixedly connected to the second rotating cylinder 200. In this way, the two limiting arc plates 430 are rotatably connected to the sleeve 420, resulting in more connection points and relatively higher connection stability.

[0058] Specifically, there is a gap between the two limiting arc plates 430.

[0059] Specifically, the sleeve 420 is located between the connecting plate 340 and the bottom side wall of the second rotating cylinder 200.

[0060] Combination Figure 7As shown, optionally, the second rotating drum 200 is provided with an elastic element 500. One end of the elastic element 500 abuts against the first rotating drum 100, and the other end of the elastic element 500 abuts against the first locking element 300. In this way, the elastic element 500 provides elastic force for the first locking element 300 to move toward the slot 101, assisting the first locking element 300 in inserting into the slot 101. Furthermore, the elastic element 500 serves as the first locking element 300, reducing the risk of the first locking element 300 dislodging from the slot 101.

[0061] Optionally, the elastic element 500 is a spring 510, which is disposed on the outside of the sleeve 420. One end of the spring 510 abuts against the connecting plate 340, and the other end of the spring 510 abuts against the bottom of the second rotating cylinder 200. In this way, the spring 510 provides elastic force to the connecting plate 340, reducing the risk of the insertion rod 311 dislodging from the slot 101.

[0062] Specifically, the spring 510 is located on the outside of the sleeve 420.

[0063] Specifically, spring 510 is located on the outside of the limiting guard plate.

[0064] Optionally, the locking device for the nursing bed further includes a third rotating cylinder 600. The third rotating cylinder 600 is rotatably configured with respect to the second rotating cylinder 200 and connected to the first rotating cylinder 100. In this way, the third rotating cylinder 600 is connected to the first rotating cylinder 100 and to the movable railing of the nursing bed, resulting in relatively high stability of the connection.

[0065] Combination Figure 8 As shown, optionally, the second rotating drum 200 includes a first cylindrical portion 210 and a second cylindrical portion 220. The first cylindrical portion 210 and the second cylindrical portion 220 are detachably connected. In this way, by setting the first cylindrical portion 210 and the second cylindrical portion 220, the length of the second rotating drum 200 can be set to be relatively long to meet the needs of nursing bed railings of different heights.

[0066] Optionally, a connecting shaft 230 is provided between the first cylindrical portion 210 and the second cylindrical portion 220. One end of the connecting shaft 230 is connected to the first cylindrical portion 210, and the other end of the connecting shaft 230 is connected to the second cylindrical portion 220. In this way, the connecting shaft 230 is connected to the first cylindrical portion 210 and the second cylindrical portion 220 respectively, so that there is a gap between the first cylindrical portion 210 and the second cylindrical portion 220.

[0067] Understandably, the connecting shaft 230 can be threadedly connected to the first cylindrical portion 210 and / or the second cylindrical portion 220, making it easy to disassemble the first cylindrical portion 210 and / or the second cylindrical portion 220.

[0068] Optionally, the connecting shaft 230 is rotatably connected to the third rotating drum 600, and the third rotating drum 600 is located between the first cylindrical section 210 and the second cylindrical section 220. In this way, the first cylindrical section 210 and the second cylindrical section 220 can provide a limit for the third rotating drum 600, so that the stability of the third rotating drum 600 is relatively high during rotation relative to the connecting shaft 230.

[0069] Optionally, a connecting rod 240 is provided on one side of the second rotating drum 200. In this way, the second rotating drum 200 is connected to the fixed railing of the nursing bed through the connecting rod 240, so that there is a gap between the fixed railing and the second rotating drum 200 and the first rotating drum 100, leaving space for the user to rotate and open the movable railing.

[0070] Optionally, a connecting rod 240 is provided on both the first cylindrical section 210 and the second cylindrical section 220. In this way, multiple connecting rods 240 are used to fix the bed to the railing, resulting in a relatively large number of connection points and relatively high connection strength.

[0071] Optionally, the first rotating drum 100 and / or the second rotating drum 200 are made of plastic. In this way, when the first rotating drum 100 is made of plastic, its thermal conductivity is relatively low, resulting in a better tactile experience for the user. Similarly, when the second rotating drum 200 is made of plastic, its thermal conductivity is relatively low, also providing a better tactile experience for the user. Finally, when both the first rotating drum 100 and the second rotating drum 200 are made of plastic, their thermal conductivity is relatively low, resulting in a better tactile experience for the user.

[0072] Understandably, the plastic can be polyamide, ABS plastic, and PC plastic, etc.

[0073] In some embodiments, the nursing bed includes a locking device for the nursing bed as described in the above embodiments.

[0074] The nursing bed provided by this disclosure includes a locking device as described in the above embodiment. One of the first rotating cylinder 100 and the second rotating cylinder 200 is connected to a fixed railing of the nursing bed, and the other is connected to a movable railing of the nursing bed. The first rotating cylinder 100 and the second rotating cylinder 200 rotate in cooperation, allowing the movable railing to be rotated open, facilitating the user's entry and exit from the nursing bed. When the movable railing is rotated open from closed to a preset angle, the first locking member 300 is pressed down, causing the first locking member 300 to slide relative to the first rotating cylinder 100 toward the second rotating cylinder 200. The insert 310 then slides out of the slot 101, releasing the restriction on the relative sliding of the first rotating cylinder 100 and the second rotating cylinder 200 by the insert 310 and the slot 101. Furthermore, the protrusion 320 slides within the spiral hole 410, causing the second locking member 400 to rotate relative to the second rotating cylinder 200. The movable railing is then rotated, causing the first rotating cylinder 100 to rotate relative to the second rotating cylinder 200. Simultaneously, the first locking member 300, the protrusion 320, and the connector 310 rotate. The protrusion 320 then rotates within the spiral hole 410, causing the first locking member 300 to slide relative to the first rotating cylinder 100. The connector 310 then inserts into one of the slots 101. The connector 310 and the slot 101 work together to restrict the relative sliding of the first rotating cylinder 100 and the second rotating cylinder 200, reducing the risk of the railing being accidentally activated and shaken after being opened, and reducing the risk of the railing colliding with the bed frame and surrounding personnel.

[0075] Combination Figure 9 As shown, optionally, the nursing bed also includes: a fixed railing 710 and a rotating railing 720. The fixed railing 710 is fixedly connected to the second rotating cylinder 200; the rotating railing 720 is fixedly connected to the first rotating cylinder 100. Thus, the rotating railing 720 is fixedly connected to the first rotating cylinder 100, and the first rotating cylinder 100 can rotate relative to the second rotating cylinder 200, causing the rotating railing 720 to rotate open or close.

[0076] Optionally, the rotating guardrail 720 is fixedly connected to the third rotating cylinder 600. In this way, the rotating guardrail 720 is fixedly connected to both the first rotating cylinder 100 and the third rotating cylinder 600, resulting in relatively high connection stability and a relatively low risk of the rotating guardrail 720 wobbling.

[0077] Specifically, the fixed railing 710 is fixedly connected to the connecting rod 240.

[0078] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A locking device for a care bed, characterized in that The utility model relates to a locking device for nursing bed, including: First rotary drum (100), bottom is equipped with a plurality of slot (101); Second rotary drum (200), rotation setting in the downside of first rotary drum (100); First locking piece (300), extend through first rotary drum (100) to second rotary drum (200) and be equipped with the plug connector (310) in second rotary drum (200) can with one of slot (101) plug, first locking piece (300) with first rotary drum (100) sliding connection, first locking piece (300) is equipped with convex block (320); Second locking piece (400), rotation setting in second rotary drum (200) and the outside of first locking piece (300) is covered and is equipped with the spiral hole (410) of sliding connection with convex block (320), and the friction of second locking piece (400) and second rotary drum (200) is greater than the friction of convex block (320) and spiral hole (410).

2. The locking device for a care bed according to claim 1, characterized in that First locking piece (300), including: Extension rod (330), extend through first rotary drum (100) to second rotary drum (200) in, be equipped with convex block (320) on extension rod (330); Connecting disc (340), sliding setting in second rotary drum (200) and with fixed connection of extension rod (330), plug connector (310) is the plug connector rod (311) of fixed connection with connecting disc (340).

3. The locking device for nursing bed according to claim 2, wherein The inner side wall of the first rotary drum (100) is provided with a sliding key (110), and the extension rod (330) is provided with a key groove (331) in sliding connection with the sliding key (110).

4. The locking device for nursing bed according to claim 2, wherein The top end of the extension rod (330) is fixedly provided with a pressing plate (350), the top of the first rotary drum (100) is provided with a recess (120), and the pressing plate (350) is movably arranged in the recess (120).

5. The locking device for nursing bed according to claim 1, wherein The second locking piece (400) is a sleeve (420), the bottom of the second rotary drum (200) is provided with a limiting arc plate (430), and the bottom of the sleeve (420) is rotatably connected with the limiting arc plate (430).

6. The locking device for nursing bed according to any one of claims 1 to 5, wherein The second rotary drum (200) is provided with an elastic member (500) therein, one end of the elastic member (500) abuts against the first rotary drum (100), and the other end of the elastic member (500) abuts against the first locking piece (300).

7. The locking device for a care bed according to any one of claims 1 to 5, characterized in that Further comprising: A third rotary drum (600) is rotatably arranged with the second rotary drum (200) and connected with the first rotary drum (100).

8. The locking device for nursing bed according to any one of claims 1 to 5, wherein One side of the second rotary drum (200) is provided with a connecting rod (240).

9. A care bed, characterized in that The utility model discloses a locking device for nursing bed.

10. The care bed defined in claim 9 characterised in that Further comprising: A fixed railing (710) is fixedly connected with the second rotary drum (200). The rotating rail (720) is fixedly connected with the first rotating drum (100).

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