A connecting device for a folding bed

Abstract

The application discloses a connecting device for a folding bed, which comprises a first supporting cross frame and a second supporting cross frame, the first supporting cross frame and the second supporting cross frame are symmetrically arranged, the two ends of the first supporting cross frame and the second supporting cross frame are rotationally connected through end rotating members, the first supporting cross frame and the second supporting cross frame can be reversely folded downwards with the end rotating members as the shafts, and the lower parts of the first supporting cross frame and the second supporting cross frame are symmetrically provided with two supporting frames. The connecting device for the folding bed is simple in structure, convenient to use, stable in support, and can effectively reduce the inconvenience of users and the influence on market promotion caused by the complex connecting structure.

Description

Technical Field

[0001] This invention relates to the field of folding bed technology, and in particular to a connecting device for folding beds. Background Technology

[0002] Beds, as furniture for sleeping, are generally placed in bedrooms. However, through thousands of years of evolution, beds have become not only tools for sleeping but also decorative items in the home. The advent of folding beds has brought convenience to people's lives. Because folding beds are easy to use and carry, they often play an extraordinary role in outings or outdoor activities. In hospitals, when there are many patients and a shortage of beds, folding beds can be temporarily added to support the timely admission and treatment of patients.

[0003] Most existing folding beds have drawbacks such as complex folding mechanisms and cumbersome folding functions, which cause inconvenience to users or increase the manufacturing cost of folding beds, hindering market promotion. Therefore, this application proposes a connecting device for folding beds to provide a new technical solution to solve the technical problems existing in the prior art. Summary of the Invention

[0004] Based on this, it is necessary to provide a connecting device for folding beds to address the above-mentioned technical problems. Through the coordinated design of a first support crossbeam, a second support crossbeam, an end rotating component, a support frame, a fixed connecting frame, a connecting rod, and a movable limiting component, the device has a simple structure, is easy to use, and has relatively stable support, effectively reducing the inconvenience caused to users and the impact on market promotion due to the complexity of the connecting structure.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A connecting device for a folding bed, which is used in the support of a folding bed.

[0007] The connecting device for the folding bed specifically includes: a first support crossbeam and a second support crossbeam. The first support crossbeam and the second support crossbeam are symmetrically arranged. The two ends of the first support crossbeam and the second support crossbeam are rotatably connected by end rotating parts. The first support crossbeam and the second support crossbeam can be folded downwards with the end of the end rotating part as the axis.

[0008] The lower part of the first support crossbeam and the second support crossbeam are symmetrically provided with two support frames. The two support frames on the same side are fixedly connected by a connecting rod. The lower end of the first support crossbeam and the second support crossbeam and the position corresponding to the support frame are fixedly connected to a fixed connecting frame. The upper end of the support frame and the fixed connecting frame corresponding to its position are rotatably connected.

[0009] A movable limiting component is provided below the position between the first support crossbeam and the second support crossbeam. The movable limiting component is used to limit the movement of the support frame below the first support crossbeam and the second support crossbeam after they are unfolded.

[0010] In a preferred embodiment of the connecting device for folding beds provided by the present invention, the rotation angle of the support frame is 0°~100°.

[0011] In a preferred embodiment of the connecting device for a folding bed provided by the present invention, the movable limiting component includes a first limiting component located between two connecting rods. The first limiting component includes a first limiting rod one and a first limiting rod two. One end of the first limiting rod one is rotatably connected to one of the connecting rods, and one end of the first limiting rod two is rotatably connected to the other connecting rod. External threads one and two are respectively provided on the outer sides of the first limiting rod one and the first limiting rod two, which are close to each other. The external threads one and the external threads two have the same direction of rotation, and the length ratio of the external threads one to the external threads two is 1:1.5~2. The end of the first limiting rod one near the end of the first limiting rod two is threadedly connected to a connecting sleeve through the external thread one. When the connecting sleeve rotates, it can move along the axial direction of the first limiting rod one. The end of the connecting sleeve near the first limiting rod two is threadedly connected to the first limiting rod two through the external thread two.

[0012] In a preferred embodiment of the connecting device for a folding bed provided by the present invention, the movable limiting component includes a second limiting component. A second limiting component is provided between two support frames located at the same end, below the ends of the first and second support frames. The second limiting component includes a second limiting rod one and a second limiting rod two. Both the second limiting rod one and the second limiting rod two are V-shaped. The second limiting rod one and the second limiting rod two are symmetrically arranged. The upper end of the second limiting rod one, away from the second limiting rod two, is rotatably connected to a fixed connecting frame below the first support frame via an end connector one. The lower end of the second limiting rod one, away from the second limiting rod two... The second limiting rod is rotatably connected to the lower end of the support frame below the first supporting crossbeam via another end connector. The upper end of the second limiting rod away from the second limiting rod is rotatably connected to the fixed connecting frame at the lower end of the second supporting crossbeam via the end connector. The lower end of the second limiting rod away from the second limiting rod is rotatably connected to the lower end of the support frame at the lower end of the second supporting crossbeam via another end connector. The ends of the second limiting rod and the second limiting rod that are close to each other are respectively provided with connecting post 1 and connecting post 2. Connecting post 1 is fixedly connected to the second limiting rod 1, and connecting post 2 is fixedly connected to the second limiting rod 2. Connecting post 1 and connecting post 2 are detachably connected by a limiting insert.

[0013] In a preferred embodiment of the connecting device for folding beds provided by the present invention, both connecting post one and connecting post two have through holes in their middle portions. Connecting post one is fixed with connecting block one via connecting block one on the side near connecting post two. Connecting block one is inserted into the through hole of connecting post two. Connecting post two is fixed with connecting block two via connecting block two on the side near connecting post one. Connecting block two is inserted into the through hole of connecting post one. The lower end of the limiting bracket is inserted into connecting block one and connecting block two respectively.

[0014] In a preferred embodiment of the connecting device for folding beds provided by the present invention, an anti-loss rope is fixed to the upper end of the limiting bracket, and the end of the anti-loss rope away from the limiting bracket is fixedly connected to the second limiting rod one or the second limiting rod two.

[0015] In a preferred embodiment of the connecting device for folding beds provided by the present invention, the second limiting rod one can rotate horizontally through the end connector one, and the second limiting rod two can rotate horizontally through the end connector two.

[0016] In a preferred embodiment of the connecting device for the folding bed provided by the present invention, the anti-loss rope is made of an elastic material.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The connecting device for folding beds provided by this invention, through the coordinated design of a first supporting crossbeam, a second supporting crossbeam, an end rotating component, a support frame, a fixed connecting frame, a connecting rod, and a movable limiting component, makes the device simple in structure, easy to use, and provides relatively stable support, effectively reducing the inconvenience to users caused by the complex connection structure and the impact on market promotion.

[0019] The connecting device for folding beds provided by the present invention enables the support frame to be effectively moved and limited through a movable limiting component. Moreover, the movable limiting component has a relatively simple structure and is easy to operate. Attached Figure Description

[0020] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure of the connecting device for a folding bed provided by the present invention;

[0022] Figure 2 This is a front view of the overall structure of the connecting device for a folding bed provided by the present invention;

[0023] Figure 3 This is a side view of the overall structure of the connecting device for a folding bed provided by the present invention;

[0024] Figure 4 Top view of the overall structure of the connecting device for a folding bed provided by the present invention;

[0025] Figure 5 A schematic diagram of the connection state of the first limiting component of the connecting device for a folding bed provided by the present invention;

[0026] Figure 6 A schematic diagram of the first limiting component of the connecting device for a folding bed provided by the present invention in the separated state;

[0027] Figure 7 A schematic diagram of the folding steps of the connecting device for a folding bed with a first limiting component provided by the present invention;

[0028] Figure 8 This is a schematic diagram of the overall structure of the connecting device for a folding bed provided by the present invention, which includes a second limiting component.

[0029] Figure 9 This is a side view of the overall structure of the connecting device for a folding bed provided by the present invention, including the second limiting component;

[0030] Figure 10 This is a schematic diagram of the structure of the second limiting component of the connecting device for a folding bed provided by the present invention;

[0031] Figure 11 An enlarged view of the connection structure of the second limiting component of the connecting device for a folding bed provided by the present invention;

[0032] Figure 12 A schematic diagram of the folding steps of the connecting device for a folding bed with a second limiting component provided by the present invention;

[0033] Figure 13 This is a schematic diagram of the overall structure of the connecting device for a folding bed provided by the present invention after being folded up, including the second limiting component.

[0034] The markings in the diagram are explained as follows:

[0035] 1. First supporting crossbeam; 2. Second supporting crossbeam; 3. End rotating component; 4. Support frame; 5. Fixed connecting frame; 6. Connecting rod; 7. First limiting assembly; 8. First limiting rod one; 9. First limiting rod two; 10. Connecting sleeve; 11. Second limiting assembly; 12. Second limiting rod one; 13. End connecting component one; 14. Second limiting rod two; 15. End connecting component two; 16. Connecting post one; 17. Connecting post two; 18. Limiting insert; 19. Anti-loss rope; 20. Connecting block one; 21. Connecting insert one; 22. Connecting block two; 23. Connecting insert two; 24. External thread one; 25. External thread two. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0037] As described in the background section, most existing folding beds have defects and shortcomings such as complex folding mechanisms and cumbersome folding functions, which cause inconvenience to users or make the manufacturing cost of folding beds high, thus hindering market promotion.

[0038] To address this technical problem, the present invention provides a connecting device for folding beds, which is applied to the support of folding beds.

[0039] For details, please refer to Figures 1-4 The connecting device for the folding bed specifically includes: a first support crossbeam 1 and a second support crossbeam 2. The first support crossbeam 1 and the second support crossbeam 2 are symmetrically arranged. The two ends of the first support crossbeam 1 and the second support crossbeam 2 are rotatably connected by an end rotating member 3. The first support crossbeam 1 and the second support crossbeam 2 can be folded downwards with the end of the end rotating member 3 as the axis.

[0040] The lower part of the first support crossbeam 1 and the second support crossbeam 2 are symmetrically provided with two support frames 4. The two support frames 4 on the same side are fixedly connected by a connecting rod 6. The lower end of the first support crossbeam 1 and the second support crossbeam 2 and the position corresponding to the support frame 4 are fixedly provided with a fixed connecting frame 5. The upper end of the support frame 4 is rotatably connected to the fixed connecting frame 5 corresponding to its position.

[0041] A movable limiting component is provided below the position between the first support crossbeam 1 and the second support crossbeam 2. The movable limiting component is used to limit the movement of the support frame 4 below the first support crossbeam 1 and the second support crossbeam 2 after it is unfolded.

[0042] The connecting device for folding beds provided by the present invention, through the coordinated design of the first supporting crossbeam 1, the second supporting crossbeam 2, the end rotating part 3, the support frame 4, the fixed connecting frame 5, the connecting rod 6 and the movable limiting component, makes the device simple in structure, easy to use, and has relatively stable support, effectively reducing the inconvenience caused to users and the impact on market promotion caused by the complex connection structure.

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0044] Example 1:

[0045] Please refer to Figures 1-4 A connecting device for a folding bed includes: a first support crossbeam 1 and a second support crossbeam 2, the first support crossbeam 1 and the second support crossbeam 2 are symmetrically arranged, the two ends of the first support crossbeam 1 and the second support crossbeam 2 are rotatably connected by an end rotating member 3, the first support crossbeam 1 and the second support crossbeam 2 can be folded downwards with the end of the end rotating member 3 as the axis, so that when the device is not in use, the space occupied can be reduced by folding the first support crossbeam 1 and the second support crossbeam 2;

[0046] The system supports the first support crossbeam 1 and the second support crossbeam 2. Two support frames 4 are symmetrically arranged at the lower part of both the first and second support crossbeams 1 and 2. The two support frames 4 on the same side are fixedly connected by a connecting rod 6. A fixed connecting frame 5 is fixed at the lower end of the first and second support crossbeams 1 and at a position corresponding to the support frame 4. The upper end of the support frame 4 is rotatably connected to the fixed connecting frame 5 corresponding to its position. Moving the connecting rod 6 can drive the two support frames 4 on the same side to move synchronously. Therefore, when the connecting rod 6 is subject to a movement limit, the support frame 4 connected to it cannot move. The rotation angle of the support frame 4 is set to 0°~100°. By limiting the rotation of the support frame 4, excessive rotation of the support frame 4 is avoided, and the unfolded support frame 4 also ensures support for the first and second support crossbeams 1 and 2.

[0047] Furthermore, a movable limiting component is provided below the position between the first supporting crossbeam 1 and the second supporting crossbeam 2. The movable limiting component is used to limit the movement of the supporting frame 4 below the first supporting crossbeam 1 and the second supporting crossbeam 2 after they are unfolded.

[0048] Example 2:

[0049] The connecting device for the folding bed provided in Embodiment 1 is further optimized, specifically, as follows: Figure 1 - Figure 7 The movable limiting component includes a first limiting component 7, which is located between two connecting rods 6. The first limiting component 7 includes a first limiting rod 8 and a first limiting rod 9. One end of the first limiting rod 8 is rotatably connected to one of the connecting rods 6, and one end of the first limiting rod 9 is rotatably connected to the other connecting rod 6. External threads 24 and 25 are respectively provided on the outer sides of the ends of the first limiting rod 8 and the second limiting rod 9, which are close to each other. The external threads 24 and 25 have the same direction of rotation. The length ratio of the connecting sleeve 10 to the external thread 25 is 1:1.5~2, so that the connecting sleeve 10 can be moved towards the first limiting rod 8 by rotating the connecting sleeve 10, so that the connecting sleeve 10 is completely disengaged from the first limiting rod 9. The end of the first limiting rod 8 near the first limiting rod 9 is threaded with the connecting sleeve 10 through the external thread 24. When the connecting sleeve 10 is rotated, it can move along the axial direction of the first limiting rod 8. The end of the connecting sleeve 10 near the first limiting rod 9 is threaded with the first limiting rod 9 through the external thread 25.

[0050] It can be seen that after the first supporting crossbeam 1, the second supporting crossbeam 2, and the support frame 4 are unfolded, by rotating the first limiting rod 8 and the first limiting rod 9, the first limiting rod 8 and the first limiting rod 9 are made to be on the same axis. Then, by rotating the connecting sleeve 10, the connecting sleeve 10 is moved towards the first limiting rod 9 until the end of the connecting sleeve 10 near the first limiting rod 9 exceeds the connection point of the first limiting rod 8 and the first limiting rod 9. Thus, the first limiting rod 8 and the first limiting rod 9 are connected through the connecting sleeve 10, and then the first limiting rod is fixed. The first limiting rod 8 and the second limiting rod 9 restrict the movement of the connecting rod 6 below the first supporting crossbeam 1 and the second supporting crossbeam 2. When the movement of the connecting rod 6 is restricted, the support frame 4 connected to it is also restricted, thus completing the support of the device. When it is necessary to fold, the connecting sleeve 10 is rotated in the opposite direction, causing the connecting sleeve 10 to move towards the first limiting rod 8 until the end of the connecting sleeve 10 separates from the first limiting rod 9. This releases the connection between the first limiting rod 8 and the first limiting rod 9, and also releases the movement restriction between the connecting rod 6 and the support frame 4, thus allowing the device to be folded. Figure 7 The device shown is used to gather and fold together.

[0051] Example 3:

[0052] The connecting device for the folding bed provided in Embodiment 1 is further optimized, specifically, as follows: Figures 8-13 The movable limiting component includes a second limiting component 11. A second limiting component 11 is provided between two support frames 4 located at the same end, below the ends of the first support crossbeam 1 and the second support crossbeam 2. The second limiting component 11 includes a second limiting rod 12 and a second limiting rod 14. Both the second limiting rod 12 and the second limiting rod 14 are V-shaped and symmetrically arranged. The upper end of the second limiting rod 12, away from the second limiting rod 14, is rotatably connected to a fixed connecting frame 5 below the first support crossbeam 1 via an end connector 13. The lower end of the second limiting rod 12, away from the second limiting rod 14, is rotatably connected to the lower end of the support frame 4 below the first support crossbeam 1 via another end connector 13. The upper end of the second limiting rod 14, away from the second limiting rod 12, is connected to... The fixed connecting frame 5 at the lower end of the second supporting crossbeam 2 is rotatably connected. The lower end of the second limiting rod 14 away from the second limiting rod 12 is rotatably connected to the lower end of the support frame 4 at the lower end of the second supporting crossbeam 2 through another end connector 15. The end connector 13 at the end of the second limiting rod 12 and the end connector 15 at the end of the second limiting rod 14 allow the second limiting rod 12 to rotate horizontally through the end connector 13, and the second limiting rod 14 to rotate horizontally through the end connector 15. Connecting post 16 and connecting post 17 are respectively provided at the ends of the second limiting rod 12 and the second limiting rod 14 that are close to each other. The connecting post 16 is fixedly connected to the second limiting rod 12, and the connecting post 17 is fixedly connected to the second limiting rod 14. The connecting post 16 and the connecting post 17 are detachably connected through a limiting insert 18.

[0053] Furthermore, to facilitate the connection and limiting of connecting post 16 and connecting post 27, both connecting post 16 and connecting post 27 have through holes in their middle parts. Connecting post 16 is fixed with connecting block 21 via connecting block 20 on the side near connecting post 27. Connecting block 21 is inserted into the through hole of connecting post 27. Connecting post 27 is fixed with connecting block 23 via connecting block 22 on the side near connecting post 16. Connecting block 23 is inserted into the through hole of connecting post 16. The lower end of the limiting bracket 18 is inserted into connecting block 20 and connecting block 22 respectively. In order to reduce the possibility of accidental loss of the limiting bracket 18, an anti-loss rope 19 is fixed to the upper end of the limiting bracket 18. The end of the anti-loss rope 19 away from the limiting bracket 18 is fixedly connected to the second limiting rod 12 or the second limiting rod 14. The anti-loss rope 19 is made of elastic material.

[0054] It can be seen that after the first support crossbeam 1, the second support crossbeam 2, and the support frame 4 are unfolded, by rotating the second limiting rod 12 and the second limiting rod 14, the connecting column 16 is inserted into the connecting column 17 through the connecting plug 21, and the connecting column 17 is inserted into the connecting column 16 through the connecting plug 23, thus completing the connection between the second limiting rod 12 and the second limiting rod 14. Then, the lower end of the limiting plug 18 is inserted into the connecting block 20 and the connecting block 22 respectively, thus completing the limiting after the connecting column 16 and the connecting column 17 are connected, thereby preventing the second limiting rod 12 and the second limiting rod 14 from being stopped. 4. In the event of unexpected rotation, the second limiting rod 12 and the second limiting rod 24 respectively limit the support frame 4 below the first support crossbeam 1 and the second support crossbeam 2, thereby ensuring that the support frame 4 effectively supports the first support crossbeam 1 and the second support crossbeam 2; when the device is folded up, first pull it upwards towards the limiting insert 18 to release the connection limitation of connecting post 16 and connecting post 27, so that connecting post 27 can be separated from connecting post 16 by rotating the second limiting rod 214, and then the second limiting rod 12 is rotated to complete the folding of the second limiting assembly 11. After the second limiting assembly 11 is folded up, it can be adjusted according to... Figure 12 The device shown is used to gather and fold together.

[0055] Through the above structural design

[0056] The usage process of the connecting device for folding beds provided by this invention is as follows: Figure 7 Or, as shown in the second limiting rod 12, when the device is folded up, firstly, the movable limiting component releases the movement limitation of the support frame 4 below the first support crossbeam 1 and the second support crossbeam 2. After releasing the limitation of the support frame 4 below the first support crossbeam 1 and the second support crossbeam 2, the support frame 4 below the first support crossbeam 1 is flipped upwards at a position below the first support crossbeam 1, and the support frame 4 below the second support crossbeam 2 is flipped upwards at a position below the second support crossbeam 2. After the support frame 4 below the first support crossbeam 1 and the second support crossbeam 2 is flipped and folded, the first support crossbeam 1 and the second support crossbeam 2 are flipped downwards and folded with the end rotating member 3 as the center, thus completing the folding of the device.

Claims

1. A connecting device for a folding bed, characterized in that, It includes a first support crossbeam (1) and a second support crossbeam (2). The first support crossbeam (1) and the second support crossbeam (2) are symmetrically arranged. The two ends of the first support crossbeam (1) and the second support crossbeam (2) are rotatably connected by an end rotating member (3). The first support crossbeam (1) and the second support crossbeam (2) can be folded downwards with the end of the end rotating member (3) as the axis. The first support crossbeam (1) and the second support crossbeam (2) are symmetrically provided with two support frames (4) at their lower parts. The two support frames (4) on the same side are fixedly connected by a connecting rod (6). The lower end of the first support crossbeam (1) and the second support crossbeam (2) and the position corresponding to the support frame (4) are fixed with a fixed connecting frame (5). The upper end of the support frame (4) is rotatably connected to the fixed connecting frame (5) corresponding to its position. A movable limiting component is provided below the position between the first support crossbeam (1) and the second support crossbeam (2). The movable limiting component is used to limit the movement of the support frame (4) below the first support crossbeam (1) and the second support crossbeam (2) after they are unfolded. The movable limiting component includes a first limiting component (7), which is located between two connecting rods (6). The first limiting component (7) includes a first limiting rod one (8) and a first limiting rod two (9). One end of the first limiting rod one (8) is rotatably connected to one of the connecting rods (6), and one end of the first limiting rod two (9) is rotatably connected to the other connecting rod (6). External threads one (24) and two (25) are respectively provided on the outer sides of the first limiting rod one (8) and the first limiting rod two (9) near each other. The external threads 1 (24) and 2 (25) have the same direction of rotation. The length ratio of external threads 1 (24) to external threads 2 (25) is 1:1.5~2. The end of the first limiting rod 1 (8) near the first limiting rod 2 (9) is threaded with a connecting sleeve (10) through external thread 1 (24). When the connecting sleeve (10) rotates, it can move along the axial direction of the first limiting rod 1 (8). The end of the connecting sleeve (10) near the first limiting rod 2 (9) is threaded with the first limiting rod 2 (9) through external thread 2 (25).

2. The connecting device for a folding bed according to claim 1, characterized in that, The rotation angle of the support frame (4) is 0°~100°.

3. A connecting device for a folding bed, characterized in that, It includes a first support crossbeam (1) and a second support crossbeam (2). The first support crossbeam (1) and the second support crossbeam (2) are symmetrically arranged. The two ends of the first support crossbeam (1) and the second support crossbeam (2) are rotatably connected by an end rotating member (3). The first support crossbeam (1) and the second support crossbeam (2) can be folded downwards with the end of the end rotating member (3) as the axis. The first support crossbeam (1) and the second support crossbeam (2) are symmetrically provided with two support frames (4) at their lower parts. The two support frames (4) on the same side are fixedly connected by a connecting rod (6). The lower end of the first support crossbeam (1) and the second support crossbeam (2) and the position corresponding to the support frame (4) are fixed with a fixed connecting frame (5). The upper end of the support frame (4) is rotatably connected to the fixed connecting frame (5) corresponding to its position. A movable limiting component is provided below the position between the first support crossbeam (1) and the second support crossbeam (2). The movable limiting component is used to limit the movement of the support frame (4) below the first support crossbeam (1) and the second support crossbeam (2) after they are unfolded. The movable limiting component includes a second limiting component (11). A second limiting component (11) is provided between two support frames (4) located at the same end below the ends of the first support frame (1) and the second support frame (2). The second limiting component (11) includes a second limiting rod one (12) and a second limiting rod two (14). Both the second limiting rod one (12) and the second limiting rod two (14) are V-shaped. The second limiting rod one (12) and the second limiting rod two (14) are symmetrically arranged. The upper end of the second limiting rod one (12) away from the second limiting rod two (14) is rotatably connected to the fixed connecting frame (5) below the first support frame (1) via an end connector one (13). The lower end of the second limiting rod one (12) away from the second limiting rod two (14) is connected to the first support frame (1) via another end connector one (13). The lower end of the support frame (4) below is rotatably connected. The upper end of the second limiting rod (14) away from the second limiting rod (12) is rotatably connected to the fixed connecting frame (5) at the lower end of the second support cross frame (2) through the end connector (15). The lower end of the second limiting rod (14) away from the second limiting rod (12) is rotatably connected to the lower end of the support frame (4) at the lower end of the second support cross frame (2) through another end connector (15). The ends of the second limiting rod (12) and the second limiting rod (14) that are close to each other are respectively provided with connecting column (16) and connecting column (17). The connecting column (16) is fixedly connected to the second limiting rod (12), and the connecting column (17) is fixedly connected to the second limiting rod (14). The connecting column (16) and the connecting column (17) are detachably connected through the limiting insert (18).

4. The connecting device for a folding bed according to claim 3, characterized in that, Both the first connecting post (16) and the second connecting post (17) have through holes in the middle. The first connecting post (16) is fixed with a first connecting block (21) via a first connecting block (20) on the side near the second connecting post (17). The first connecting block (21) is inserted into the through hole of the second connecting post (17). The second connecting post (17) is fixed with a second connecting block (23) via a second connecting block (22) on the side near the first connecting post (16). The second connecting block (23) is inserted into the through hole of the first connecting post (16). The lower end of the limiting bracket (18) is inserted into the first connecting block (20) and the second connecting block (22) respectively.

5. The connecting device for a folding bed according to claim 3, characterized in that, The upper end of the limiting bracket (18) is fixed with an anti-loss rope (19), and the end of the anti-loss rope (19) away from the limiting bracket (18) is fixedly connected to the second limiting rod one (12) or the second limiting rod two (14).

6. The connecting device for a folding bed according to claim 3, characterized in that, The second limiting rod (12) can rotate in the horizontal direction through the end connector (13), and the second limiting rod (14) can rotate in the horizontal direction through the end connector (15).

7. The connecting device for a folding bed according to claim 5, characterized in that, The anti-loss rope (19) is made of elastic material.

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