Lightweight folding bed

Abstract

A lightweight folding bed, comprising a bed top structure (1) and several support structures (2) arranged at the bottom of the bed top structure (1), wherein the bed top structure (1) comprises a fabric main body (11) and bed top tubes (12) configured to support the fabric main body (11); each support structure (2) comprises a transverse tube (3) and support leg assemblies (4) hinged to two ends of the transverse tube (3), and a snap-fit fastener (43) that limits and abuts against the bed top tube (12) is formed at the top of each support leg assembly (4); each support leg assembly (4) comprises a bracing tube (41) and a leg tube (42) which are hinged to the transverse tube (3), the end of the bracing tube (41) is hinged to the leg tube (42), and the end of the transverse tube (3) is hinged with a sliding member (44) for realizing relative movement of the support leg assembly (4); and the leg tube (42) forms a lever structure (60) that facilitates the deformation of the support leg assembly (4).

Description

A lightweight folding bed

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202420288033.X, filed with the Patent Office of China on February 7, 2024, entitled “A Lightweight Folding Bed,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of folding beds, and in particular to a lightweight folding bed. Background Art

[0004] A folding bed is a simple bed designed using the principle of joints. It can be folded and stored in various ways for the sake of convenience and space saving. It is convenient, practical and easy to store.

[0005] Because folding beds are easy to use and carry, they often play an extraordinary role in outings or field projects. Some people bring tents when they go out to solve the problem of sleeping, but people can also bring folding beds, so that they can use the smallest space to enjoy the most comfortable home experience.

[0006] In the hospital, if there are many patients and a shortage of beds, folding beds can be temporarily added to provide support for patients' timely admission and treatment.

[0007] Folding beds provide comfort and convenience not only during travel and in hospitals, but also play an irreplaceable role in emergencies like natural disasters. For example, during emergencies like earthquakes and mudslides, where homes collapse or are damaged, folding beds become essential tools for disaster relief. Especially in temporary shelters, tents, prefabricated houses, and folding beds are essential tools for disaster relief and rescuing victims, providing them with emotional and physical support.

[0008] Existing folding beds require pulling both ends of the bed at the same time when opening and folding the entire folding bed. During the opening and folding process, due to the limitation of the bed length, two people are usually required to cooperate, which is time-consuming and labor-intensive. At the same time, the above-mentioned folding beds are prone to causing the bed frame to loosen during use, affecting the tightness of the bed surface, thereby affecting the user's comfort. In addition, the above-mentioned folding beds are also difficult to adjust the bed surface height and are difficult to set according to actual needs.

[0009] Utility Model Content

[0010] The present disclosure provides a lightweight folding bed, which can achieve the effects of saving labor in assembly and disassembly, ensuring a tight bed surface, and being height-adjustable.

[0011] The embodiments of the present disclosure may be implemented as follows:

[0012] A lightweight folding bed, comprising:

[0013] A bed surface structure and several supporting structures arranged at the bottom of the bed surface structure; the bed surface structure includes a fabric body and a bed surface tube configured to support the fabric body, the supporting structure includes a transverse tube and a support leg assembly hingedly arranged at both ends of the transverse tube, and a clamp with the bed surface tube is formed on the top of the support leg assembly; the support leg assembly includes a support tube and a leg tube hingedly arranged on the transverse tube, and the end of the support tube is hinged to the leg tube, and the end of the transverse tube is hinged with a sliding part for realizing folding of the support leg assembly; the leg tube forms a lever structure that facilitates deformation of the support leg assembly.

[0014] Optionally, the bed surface tubes are arranged on opposite sides of the fabric body, and the clamps of the support leg assemblies at both ends of the horizontal tube are respectively clamped with the bed surface tubes on both sides of the fabric body.

[0015] Optionally, the clamp is fixedly arranged on the top of the support tube, and the fabric body is tightened on the bed surface tube through the limiting abutment of the clamp.

[0016] Optionally, the end of the support tube is hinged to the middle of the leg tube, and the end of the leg tube is hinged to the middle of the cross tube, and the support tube, the cross tube and the leg tube form a triangular structure when in the open state.

[0017] Optionally, a stopper is formed on the support tube and abuts against the sliding member to support the opening structure of the support leg assembly.

[0018] Optionally, a leg tube adapter is formed on the leg tube, which abuts against the support tube to support the opening structure of the leg assembly.

[0019] Optionally, the leg tube adapter is fixedly arranged at the middle of the leg tube, and the leg tube adapter is hinged to the leg tube.

[0020] Optionally, a transverse tube adapter is formed on the leg tube, which abuts against the transverse tube to support the opening structure of the leg assembly.

[0021] Optionally, the cross tube adapter is fixedly arranged on the top of the leg tube, and the cross tube adapter is hinged to the cross tube.

[0022] Optionally, the leg tube includes a leg branch tube and a leg cover connected to the bottom of the leg branch tube, and the bottom of the leg cover forms a support seat abutting against the ground.

[0023] Optionally, a supporting leg tube configured to adjust the height of the bed surface structure is plugged into the bottom of the foot cover, and a plug-in hole corresponding to the supporting leg tube is formed at the bottom of the foot cover.

[0024] Optionally, the size of the plug hole corresponds to the size of the plug pin.

[0025] Compared with the prior art, the beneficial effects of the embodiments of the present disclosure include, for example:

[0026] The lightweight folding bed is provided with a variable support leg assembly. When the support leg assembly is pressed down by gravity, the clamping member receives the tension from gravity and the main fabric body at the same time. The tension from gravity and the main fabric body partially offset each other to ensure the use state of the support leg assembly. Under the action of gravity, the main fabric body is tightened, so that the main fabric body tends to be increasingly tight, thereby ensuring the use stability of the overall structure. At the same time, due to the self-locking function, the overall structure of the present disclosure does not require a locking device, and the overall structure is more lightweight and convenient for folding or opening the overall structure.

[0027] The present invention provides a pluggable support leg at the bottom of the foot cover, which can realize the switching of the height of the bed surface structure, so that the height of the bed surface structure can be set according to actual needs;

[0028] The leg tube disclosed herein can be used as a labor-saving lever for switching the status of the leg assembly, and can achieve the purpose of opening or closing with less force. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0030] The present disclosure will be further described below with reference to the accompanying drawings:

[0031] FIG1 is a schematic structural diagram of the present disclosure;

[0032] Figure 2 is a schematic diagram of the support structure;

[0033] Figure 3 is a schematic diagram of the support structure;

[0034] FIG4 is a schematic structural diagram of a support structure;

[0035] FIG5 is a schematic diagram of the support structure in an open state;

[0036] FIG6 is a schematic diagram of the stress deformation of the support structure;

[0037] FIG7 is a front view of the support structure when it is folded up;

[0038] FIG8 is a folded top view of the support structure;

[0039] Figure 9 is a schematic diagram of the leg tube structure;

[0040] Figure 10 is an exploded view of the leg tube;

[0041] Figure 11 is a schematic diagram of the support structure;

[0042] Figure 12 is a diagram of the support structure under stress and deformation;

[0043] Figure 13 is a schematic diagram of the support structure folded;

[0044] Figure numerals: bed surface structure 1, fabric main body 11, bed surface tube 12, supporting structure 2, cross tube 3, support leg assembly 4, support tube 41, leg tube 42, leg tube adapter 421, cross tube adapter 422, clamp 43, sliding part 44, block 45, foot cover 46, foot branch tube 47, plug hole 48, support seat 49, support leg tube 5, supporting body 51, pin 52, polyhedron support leg 53, lever structure 60, triangular structure 70. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort shall fall within the scope of protection of the present disclosure.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0048] In the description of the present disclosure, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0049] In addition, the terms "first", "second", "third", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0050] Furthermore, the use of terms such as "horizontal," "vertical," and "overhanging" does not necessarily imply that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0051] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0052] It should be noted that, in the absence of conflict, the features in the embodiments of the present disclosure may be combined with each other.

[0053] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0054] As shown in Figures 1 to 13, a lightweight folding bed includes a bed surface structure 1 and several supporting structures 2 that are self-lockingly arranged at the bottom of the bed surface structure 1; the bed surface structure 1 includes a fabric body 11 and a bed surface tube 12 configured to support the structural strength of the fabric body 11, the supporting structure 2 includes a transverse tube 3 and a support leg assembly 4 hingedly arranged at both ends of the transverse tube 3, and a clamp 43 that self-locks with the bed surface tube 12 is formed on the top of the support leg assembly 4; the support leg assembly 4 includes a support tube 41 and a leg tube 42 that are hingedly arranged on the transverse tube 3, and the end of the support tube 41 is hinged to the middle of the leg tube 42, and the end of the transverse tube 3 is hinged with a sliding member 44 for realizing the folding of the support leg assembly 4, and the leg tube 42 forms a lever structure 60 that facilitates the deformation of the right-angle assembly 4.

[0055] It should be noted that different support leg assemblies 4 are hinged to the two ends of the same transverse tube 3 . In addition, the support tube 41 and the leg tube 42 on the same support leg assembly 4 are both hinged to the same end of the same transverse tube 3 .

[0056] The leg assembly 4 is rotated to form an open state and a folded state during the hinge process, and the position of the clamp 43 is switched under the action of the open state and the folded state, thereby realizing a detachable connection between the clamp 43 and the bed surface tube 12, and realizing a detachable connection between the bed surface structure 1 and the support structure 2.

[0057] Specifically, taking FIG. 5 and FIG. 6 as examples, when the support leg assembly 4 is subjected to a force in the F1 direction or the F2 direction, corresponding deformation may occur, thereby realizing switching between different states.

[0058] When the leg tube 42 is rotated by force, the support tube 41 hinged to the leg tube 42 causes the sliding member 44 to slide up and down as the leg tube 42 rotates. It can be understood that when the leg tube 42 is launched and rotated, the sliding member 44 slides along the axial direction of the support tube 41.

[0059] The bed surface tubes 12 are arranged on opposite sides of the fabric main body 11. The fabric main body 11 is fixedly connected to the bed surface tubes 12 by sewing. The clamps 43 of the support leg assemblies 4 at both ends of the horizontal tube 3 are respectively clamped with the bed surface tubes 12 on both sides of the fabric main body 11. Under the action of the two clamps 43, the two bed surface tubes 12 are positioned and clamped at the same time, so that under the positioning and clamping action of the two bed surface tubes 12, support for the fabric main body 11 is achieved.

[0060] It should be noted that different bed surface tubes 12 are respectively provided on both sides of the fabric body 11 , and the two bed surface tubes 12 are theoretically arranged in parallel.

[0061] The clamp 43 is fixedly arranged on the top of the support tube 41, and the opening direction of the clamp 43 is set opposite to the tightening direction of the fabric body 11 on the bed surface tube 12. The opening direction of the clamp 43 is set outward along the support leg assembly 4. When objects are placed on the fabric body 11 or someone is lying on it, the two bed surface tubes 12 are moved inward under the action of gravity, and the inward-moving bed surface tubes 12 are supported under the action of the clamp 43, thereby achieving a limited abutment between the clamp 43 and the bed surface tube 12, and thereby achieving the tightening effect of the fabric body 11 on the bed surface tube 12.

[0062] The end of the support tube 41 is hinged to the middle of the leg tube 42, and the end of the leg tube 42 is hinged to the middle of the cross tube 3. The support tube 41, the cross tube 3 and the leg tube 42 form a triangular structure 70 when in the open state, so that the whole has better stability.

[0063] The sliding member 44 is sleeved on the support tube 41, and a stopper 45 is formed on the support tube 41 to limit the sliding position of the sliding member 44. The stopper 45 is configured to limit the position of the sliding member 44, ensuring that when the support leg assembly 4 is in the open state, the support tube 41, the cross tube 3, and the leg tube 42 are in a stable triangular structure 70. It can be understood that when the support leg assembly 4 is in the open state, the stopper 45 is configured to abut against the sliding member 44.

[0064] Optionally, the leg tube 42 includes two parallel foot branch tubes 47, which are hinged on opposite sides of the cross tube 3, and the support tube 41 is hinged between the two parallel foot branch tubes 47 included in the leg tube 42. The setting of the two foot branch tubes 47 strengthens the overall strength of the leg tube 42 and facilitates the stable hinge between the support tube 41 and the leg tube 42.

[0065] A foot sleeve 46 connected to two foot branches 47 is provided at the bottom of the foot tube 42. A support seat 49 abutting the ground is formed at the bottom of the foot sleeve 46. The bottom of the support seat 49 is a horizontal structure, thereby increasing the contact area between the foot sleeve 46 and the ground under the action of the support seat 49, thereby ensuring the support stability of the overall support leg assembly 4.

[0066] Optionally, a support leg 5 configured to adjust the height of the bed structure 1 is inserted into the bottom of the foot cover 46. A socket 48 is formed at the bottom of the foot cover 46, corresponding to the support leg 5. When the support leg 5 is in contact with the ground, the foot cover 46 is in an overhead state, thereby raising the overall height of the support leg assembly 4 and the height of the bed structure 1 to meet actual needs. It can be understood that the end of the leg 5 is accommodated in the socket 48.

[0067] The supporting leg tube 5 includes a supporting body 51 and a pin 52 arranged on the top of the supporting body 51. The size of the plug-in hole 48 corresponds to the size of the pin 52. A polyhedral support foot 53 that abuts the ground is formed at the bottom of the supporting leg tube 5. At this time, the supporting body 51 abuts the bottom of the foot cover 46 to ensure that the supporting leg tube 5 is stably plugged into the bottom of the foot cover 46. The polyhedral support foot 53 is configured to abut against different ground surfaces to ensure the stable setting of the support leg assembly 4.

[0068] The supporting leg tube 5 may also be a columnar structure with the same diameter. The end of the supporting leg tube 5 is inserted into the insertion hole 48 , and the end of the supporting leg tube 5 abuts against the leg sleeve 46 .

[0069] Optionally, a leg tube adapter 421 hinged to the support tube 41 is provided in the middle of the leg tube 42, and a cross tube adapter 422 hinged to the cross tube 3 is provided at the end of the leg tube 42. The leg tube adapter 421 and the cross tube adapter 422 are both fixedly arranged on the leg tube 42.

[0070] The leg adapter 421 is fixedly connected to the leg 42 by bolts. When the support leg assembly 4 is in the open state, the relative angle between the leg 42 and the support tube 41 changes as the leg 42 swings. When the leg 42 swings to a certain angle, the outer wall of the support tube 41 abuts against the leg adapter 421, thereby limiting the support tube 41 on the leg adapter 421 and providing limited support between the leg 42 and the support tube 41. The leg adapter 421 abuts against the support tube 41 to support the open state of the support leg assembly 4. It can be understood that when the support leg assembly 4 is in the open state, the leg adapter 421 is configured to abut against the support tube 41.

[0071] The cross-tube adapter 422 is fixedly connected to the leg tube 42 via bolts. When the support leg assembly 4 is in the open state, the relative angle between the leg tube 42 and the support tube 41 changes as the leg tube 42 swings. When the leg tube 42 swings to a certain angle, the outer wall of the cross-tube 3 abuts against the cross-tube adapter 422, thereby limiting the cross-tube 3 on the cross-tube adapter 422 and providing limited support between the leg tube 42 and the support tube 41. The cross-tube adapter 422 abuts against the cross-tube 3 to support the open state of the support leg assembly 4. It can be understood that when the support leg assembly 4 is in the open state, the cross-tube adapter 422 is configured to abut against the cross-tube 42.

[0072] The leg tube adapter 421 and the cross tube adapter 422 can be set separately on the leg tube 42, or they can be set on the leg tube 42 at the same time. At the same time, a pin that is plugged into the sliding member 44 can also be set on the support tube 41. When the sliding member 44 slides to a certain position on the support tube 41, the sliding member 44 and the support tube 41 are plugged into each other under the action of the pin, thereby supporting the open state of the support leg assembly 4.

[0073] During actual use, the supporting leg tube 5 can be inserted or pulled out to realize the height switching of the bed surface structure 1. By directly inserting and pulling out the supporting leg tube 5, better strength can be provided, so that when the support leg assembly 4 is in the open state, the leg tube 42 can be sufficiently spread out, thereby making the entire support leg assembly 4 more stable. In addition, the insertion of the supporting leg tube 5 makes the entire leg tube 42 longer, and less force can be used to achieve opening and closing.

[0074] The leg tube 42 can be used as a labor-saving lever for switching the status of the support leg assembly 4, and the purpose of opening or closing can be achieved with less force. When the support leg assembly 4 is to be closed, the foot cover 46 is pressed, so that the foot cover 46 tends to move inward, driving the leg tube 42 to rotate inward around the hinge point with the cross tube 3, driving the support tube 41 to slide downward, so that the distance between the two clips 43 on the same support leg assembly 4 is shortened, so that the clip 43 can be loosened from the bed surface tube 12, and finally the entire product is closed. After closing, the cross tube 3 can be selectively plugged in and out according to actual needs.

[0075] To open, the reverse operation is performed, pushing outward at the foot cover 46, causing the foot tube 42 to rotate outward about the hinge point with the cross tube 3, driving the support tube 41 to slide upward, causing the final slide 44 to contact the stopper 45. Once the foot cover 46 reaches the predetermined position, it is open. In this state, due to the tension of the main fabric 11, the two clamping members 43 on the same leg assembly 4 tend to move closer together, forcing the final slide 44 and clamping members 43 to move away from each other. However, the stopper 45 acts as a limit, allowing the main fabric 11 to continue to maintain tension.

[0076] At the same time, the leg tube 42 is set obliquely outward. When a person lies on the fabric body 11, the leg tube 42 has a tendency to rotate outward, thereby driving the support tube 41 to have a tendency to poke upward relative to the sliding member 44. The block 45 plays a blocking role again, so that the leg tube 42 maintains its original state. Since the block 45 plays a limiting role, when the support leg assembly 4 reaches the open state, the entire support leg assembly 4 is very stable, the fabric body 11 can be very tight, and when a person lies on it, there will be a tendency to become even tighter.

[0077] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present disclosure. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

[0078] Although this document frequently uses the following terms in the figures: bed surface structure 1, fabric body 11, bed surface tube 12, support structure 2, transverse tube 3, support leg assembly 4, support tube 41, leg tube 42, leg tube adapter 421, transverse tube adapter 422, clamp 43, slide 44, stopper 45, leg cover 46, leg branch tube 47, insertion hole 48, support leg tube 5, support body 51, latch 52, polyhedral support leg 53, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present disclosure; interpreting them as any additional limitation is contrary to the spirit of the present disclosure. Industrial Applicability

[0079] The lightweight folding bed is provided with a variable support leg assembly. When the support leg assembly is pressed down by gravity, the clamping parts receive tension from gravity and the fabric body at the same time. The gravity and the tension from the fabric body partially offset each other to ensure the usable state of the support leg assembly, and the fabric body is tightened under the action of gravity, so that the fabric body tends to be increasingly tight, thereby ensuring the stability of the overall structure. At the same time, under the action of the self-locking function, the overall structure of the present application and the present disclosure does not require a locking device, the overall structure is more lightweight, and the overall structure is convenient for folding or opening.

Claims

1. A lightweight folding bed, comprising a bed surface structure (1) and a plurality of supporting structures (2) arranged at the bottom of the bed surface structure (1); characterized in that: The bed surface structure (1) includes a fabric body (11) and a bed surface tube (12) configured to support the fabric body (11); the support structure (2) includes a transverse tube (3) and a support leg assembly (4) hingedly arranged at both ends of the transverse tube (3); a clamp (43) is formed on the top of the support leg assembly (4) for limiting contact with the bed surface tube (12); the support leg assembly (4) includes a support tube (41) and a leg tube (42) hingedly arranged on the transverse tube (3), and the end of the support tube (41) is hinged to the leg tube (42); the end of the transverse tube (3) is hinged to a sliding member (44) for realizing relative movement of the support leg assembly (4); the leg tube (42) forms a lever structure (60) that facilitates deformation of the support leg assembly (4).

2. A lightweight folding bed according to claim 1, characterized in that: The bed surface tubes (12) are arranged on opposite sides of the fabric body (11), and the clamps (43) of the support leg assemblies (4) at both ends of the transverse tube (3) are respectively clamped with the bed surface tubes (12) on both sides of the fabric body (11).

3. A lightweight folding bed according to claim 1 or 2, characterized in that: The clamp (43) is fixedly arranged on the top of the support tube (41), and the fabric body (11) is tightened on the bed surface tube (12) through the limiting abutment of the clamp (43).

4. A lightweight folding bed according to claim 3, characterized in that: The opening direction of the clamp (43) is arranged opposite to the tensioning direction of the fabric body (11) on the bed surface tube (12).

5. The lightweight folding bed according to claim 1, characterized in that: The end of the support tube (41) is hinged to the middle of the leg tube (42), and the end of the leg tube (42) is hinged to the middle of the transverse tube (3). The support tube (41), the transverse tube (3) and the leg tube (42) form a triangular structure (70) when in an open state.

6. A lightweight folding bed according to claim 1 or 5, characterized in that: The sliding member (44) is sleeved on the support tube (41), and the sliding member (44) slides synchronously with the swing of the leg tube (42).

7. A lightweight folding bed according to claim 1 or 5, characterized in that: A stopper (45) is formed on the support tube (41) and abuts against the sliding member (44) to support the opening structure of the support leg assembly (4).

8. A lightweight folding bed according to claim 1 or 5, characterized in that: The leg tube (42) is formed with a leg tube adapter (421) that abuts against the support tube (41) to support the open structure of the leg assembly (4).

9. The lightweight folding bed according to claim 7, characterized in that: The leg tube adapter (421) is fixedly arranged at the middle of the leg tube (42), and the leg tube adapter (421) is hinged to the leg tube (42).

10. A lightweight folding bed according to claim 1 or 5, characterized in that: A transverse tube adapter (422) is formed on the leg tube (42) and is in contact with the transverse tube (3) to support the open structure of the leg assembly (4).

11. The lightweight folding bed according to claim 10, characterized in that: The transverse tube adapter (422) is fixedly arranged on the top of the leg tube (42), and the transverse tube adapter (422) is hinged to the transverse tube (3).

12. The lightweight folding bed according to claim 1, characterized in that: The leg tube (42) comprises a leg branch tube (47) and a leg cover (46) connected to the bottom of the leg branch tube (47); the bottom of the leg cover (46) forms a support seat (49) that abuts against the ground.

13. The lightweight folding bed according to claim 1, characterized in that: A supporting leg tube (5) configured to adjust the height of the bed surface structure (1) is plugged into the bottom of the foot cover (46), and a plug-in hole (48) corresponding to the supporting leg tube (5) is formed at the bottom of the foot cover (46).

14. The lightweight folding bed according to claim 13, characterized in that: The size of the plug hole (48) corresponds to the size of the plug pin (52).

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