Double-layer folding bed frame structure and folding bed

Abstract

The utility model provides a double-layer folding bed frame structure and a folding bed, the double-layer folding bed frame structure comprises two groups of double-layer bed frame components hinged with each other, a middle bed frame component and two groups of corner tube components, and each double-layer bed frame component comprises an upper bed frame component, a lower bed frame component and a supporting component; the upper bed frame components are hinged to the lower bed frame components through the supporting components, the two lower bed frame components are hinged to each other, the two ends of the middle bed frame assembly are detachably connected with the two upper bed frame components respectively, and the two corner pipe assemblies are hinged to the corresponding upper bed frame components and the corresponding lower bed frame components respectively. The whole unfolding and folding process can be achieved only through hinge joint of the upper bed frame component and the lower bed frame components and hinge joint of the two lower bed frame components, a user does not need to install foot pipes or other components, operation of the user is facilitated, the operation burden of the user is reduced, the assembling time of the user is saved, and the experience feeling and the satisfaction degree of the user are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bed technology field especially is related to a double -deck folding bed frame structure and folding bed. BACKGROUND

[0002] In modern home life, with the increasing demand for space utilization, double -deck folding bed frame as a space -saving furniture design, gradually receives the favor of the majority of users. However, the existing double -deck folding bed frame has some obvious defects in design, especially in folding complexity and structural strength, which seriously affects user experience and market competitiveness of the product.

[0003] Firstly, the assembly process is complex, and the traditional double -deck folding bed frame usually needs the user to install the foot pipe and other supporting parts, the installation process is tedious and time -consuming, increases the operation burden of the user, and the bed frame is prone to shaking or tilting during use due to improper installation, which not only affects the comfort and safety of the bed frame, but also reduces the overall evaluation of the product by the user, and the user experience is poor.

[0004] Secondly, the structural stability is not high, and the traditional double -deck folding bed frame usually adopts simple connection mode, such as bolt fixing or plug -in structure, which is prone to looseness in long -term use, resulting in poor stability of the bed frame, which exists safety hazard, and reduces the trust and satisfaction of the user to the product. INVENTION CONTENTS

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a double -deck folding bed frame structure and folding bed for solving the technical problems such as complex assembly process of the double -deck folding bed frame in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides a double -deck folding bed frame structure, comprising:

[0007] Two groups of double -deck bed frame assemblies are hinged to each other, the double -deck bed frame assembly comprises an upper bed frame component, a lower bed frame component and a supporting component, one end of the supporting component is hinged to the upper bed frame component, and the other end is hinged to the lower bed frame component, the two lower bed frame components are hinged to each other and can rotate along the hinge, so that the double -deck folding bed frame structure can be switched between the unfolded position of the two lower bed frame components and the storage position of the two lower bed frame components abutting each other.

[0008] A middle bed frame assembly is detachably connected with the two upper bed frame parts at two ends thereof; in the unfolded position, the upper bed frame parts are rotated to be parallel to the lower bed frame parts by the support parts, and the middle bed frame assembly is installed to limit the position; in the folded position, the middle bed frame assembly is detached, and the upper bed frame parts are rotated to be attached to the lower bed frame parts by the support parts.

[0009] As a preferred mode, two sets of side leg pipe assemblies are further arranged corresponding to the two sets of double-layer bed frame assemblies, and the two sets of side leg pipe assemblies are hingedly connected with the corresponding upper bed frame parts and lower bed frame parts; in the unfolded position, the two sets of side leg pipe assemblies are rotated to form supports; in the folded position, the side leg pipe assemblies are rotated to be attached to the double-layer bed frame assemblies.

[0010] As a preferred mode, a rotating assembly is further arranged, and the two lower bed frame parts are hingedly connected with each other by the rotating assembly.

[0011] As a preferred mode, the rotating assembly comprises a first rotating seat and a second rotating seat, one end of the first rotating seat and one end of the second rotating seat are connected with the two lower bed frame parts, and the other end of the first rotating seat and the other end of the second rotating seat are hingedly connected with each other.

[0012] As a preferred mode, the side leg pipe assembly comprises two first supporting legs and a first connecting arm connecting the two first supporting legs, and the first supporting legs are hingedly connected with the side surfaces of the corresponding upper bed frame parts and lower bed frame parts.

[0013] As a preferred mode, the side leg pipe assembly further comprises two tabs, one end of the tab is hingedly connected with the side surface of the corresponding lower bed frame part, and the other end of the tab is hingedly connected with the first supporting leg.

[0014] As a preferred mode, two sets of middle leg pipe assemblies are further arranged corresponding to the two sets of double-layer bed frame assemblies, and the two sets of middle leg pipe assemblies are hingedly connected with the corresponding upper bed frame parts and lower bed frame parts.

[0015] As a preferred mode, the middle leg pipe assembly comprises two second supporting legs and a second connecting arm connecting the two second supporting legs, and the second supporting legs are hingedly connected with the middle parts of the corresponding upper bed frame parts and lower bed frame parts.

[0016] As a preferred mode, the support part comprises a plurality of support rods, one end of the support rod is hingedly connected with the upper bed frame part, and the other end of the support rod is hingedly connected with the lower bed frame part.

[0017] To achieve the above-mentioned purpose, the utility model further provides a folding bed, which comprises:

[0018] The double-layer folding bed frame structure as described above;

[0019] The flexible support bed cloth is respectively sleeved on the two upper bed frame components, is stretched by the two upper bed frame components when the double-layer folding bed frame structure is in the unfolded position, and is folded when the double-layer folding bed frame structure is in the storage position.

[0020] The double-layer folding bed frame structure and the folding bed have the following beneficial effects:

[0021] When the double-layer folding bed frame structure is folded, the middle bed frame assembly is first removed from the two upper bed frame components, the two upper bed frame components are respectively pushed, the support components are driven to rotate along the hinge joints of the corresponding upper bed frame components and lower bed frame components, the two upper bed frame components and the two support components are respectively rotated to abut against the corresponding lower bed frame components, and then are rotated along the hinge joints of the two lower bed frame components, so that the two lower bed frame components are folded and abut against each other, at this time, the double-layer folding bed frame structure is in the storage position, the double-layer folding bed frame structure in this state is more convenient to store, and the folded structures are abutted together, the space ratio is small, and the folding bed is convenient to carry. When the double-layer folding bed frame structure is unfolded, the two lower bed frame components are rotated to be flush, the two upper bed frame components are reversely pushed, the support components are driven to rotate along the hinge joints of the upper bed frame components and the lower bed frame components, the two upper bed frame components are respectively rotated to be parallel to the corresponding lower bed frame components, and then the middle bed frame assembly is installed to limit, at this time, the double-layer folding bed frame structure is in the unfolded position, and the load is conveniently carried, so that the entire unfolding and storage process can be realized only through the hinge joints of the upper bed frame components and the lower bed frame components and the hinge joints of the two lower bed frame components, the user does not need to install a foot pipe or other components, the user operation is convenient, the operation burden of the user is reduced, the assembly time of the user is saved, and the user experience and satisfaction are improved.

[0022] When the folding bed is used, the double-layer folding bed frame structure is unfolded, the flexible support bed cloth is stretched by the two upper bed frame components, and a bed surface space for resting is formed. When the folding bed is stored, the double-layer folding bed frame structure is folded, the flexible support bed cloth is also folded in the double-layer folding bed frame structure, the storage space is saved, and the folding bed is convenient to carry. Only through the hinge joints of the upper bed frame components and the lower bed frame components and the hinge joints of the two lower bed frame components, the unfolding and storage of the folding bed can be realized, multiple components do not need to be installed, the operation is convenient, the user can complete the assembly of the folding bed in a short time, the cumbersome operation process is avoided, the operation burden of the user is reduced, the assembly time of the user is saved, and the user experience and satisfaction are improved.

[0023] In summary, the double-layer folding bed frame structure and folding bed of this utility model, through the hinged connection between the upper and lower bed frame components and the hinged connection between the two lower bed frame components, realize the entire unfolding and storage process without the need to install multiple parts, making it convenient for users to operate, avoiding cumbersome operation procedures, improving user experience and satisfaction, and having advantages such as stable support after unfolding, small storage space occupation, quick opening and closing, and easy portability. Attached Figure Description

[0024] Figure 1 The diagram shows the double-layer folding bed frame structure of this utility model and the structure when the folding bed is unfolded.

[0025] Figure 2 Displayed as Figure 1 The main view.

[0026] Figure 3 The diagram shows the structure of the double-layer folding bed frame of this utility model and the structural diagram during the folding bed storage process.

[0027] Figure 4 Displayed as Figure 3 The main view.

[0028] Figure 5 The diagram shows the double-layer folding bed frame structure of this utility model and another structural diagram during the folding bed storage process.

[0029] Figure 6 Displayed as Figure 5 The main view.

[0030] Figure 7 This diagram illustrates the double-layer folding bed frame structure of this utility model, as well as another structural diagram of the folding bed storage process.

[0031] Figure 8 Displayed as Figure 7 The main view.

[0032] Figure 9 The diagram shows the double-layer folding bed frame structure of this utility model and the structure when the folding bed is folded up.

[0033] Figure 10 Displayed as Figure 9 The main view.

[0034] Component designation explanation

[0035] 1. Double bunk bed frame assembly

[0036] 11 Upper Bed Frame Components

[0037] 12 Lower bed frame components

[0038] 13 Supporting components

[0039] 131 Support rod

[0040] 2. Bed frame assembly

[0041] 21. Bed frame components

[0042] 22 Connecting components

[0043] 3. Side-leg tube assembly

[0044] 31 First foot

[0045] 32 First connecting arm

[0046] 33. Pick

[0047] 4 Rotating assembly

[0048] 41 First Rotating Seat

[0049] 42 Second Rotary Seat

[0050] 5. Middle leg tube assembly

[0051] 51 Second leg

[0052] 52 Second connecting arm

[0053] 6 Anti-slip mats Detailed Implementation

[0054] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0055] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0056] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix", "hold" and so on should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element inside communication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0057] Furthermore, as used in this document, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and / or "including," as used herein, specify the presence of stated features, operations, elements, components, items, and / or groups thereof, but do not preclude the presence or addition of one or more other features, operations, elements, components, items, and / or groups thereof. As used herein, the terms "or" and "and / or" are to be interpreted as inclusive, i.e., as meaning one or any combination of items. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C." An exception to this definition will occur only when a combination of elements, functions, or operations are in some way inherently mutually exclusive.

[0058] In order to make the purpose, technical scheme and advantage of the utility model more clearly, through the following embodiment and combining with the drawings, the further detailed description of the technical scheme in the utility model embodiment is made. It should be understood that the specific embodiment described here is only used to explain the invention, and is not used to limit the invention.

[0059] As Figures 1-10 shown, the utility model provides a double -deck folding bed frame structure, including:

[0060] Two groups of double -deck bed frame components 1 that mutually articulate, double -deck bed frame component 1 includes upper bed frame part 11, lower bed frame part 12 and support part 13, one end of support part 13 is articulated with upper bed frame part 11, and the other end is articulated with lower bed frame part 12, two lower bed frame parts 12 mutually articulate, and can rotate along articulation, with the double -deck folding bed frame structure switches between the two lower bed frame parts 12 flush deployment position and two lower bed frame parts 12 storage position of convergence abutment,

[0061] The middle bed frame assembly 2 is detachably connected with the two upper bed frame parts 11 at both ends respectively; in the unfolded position, the upper bed frame part 11 is rotated to be parallel to the lower bed frame part 12 through the support part 13, and then the middle bed frame assembly 2 is installed for limiting; in the storage position, the middle bed frame assembly 2 is removed, and the upper bed frame part 11 is rotated to be attached to the lower bed frame part 12 through the support part 13.

[0062] In order to better introduce the double-layer folding bed frame structure of the utility model, the following specific application is combined to illustrate: when the double-layer folding bed frame structure is folded, the middle bed frame assembly 2 is removed from the two upper bed frame parts 11, the two upper bed frame parts 11 are pushed respectively, the support part 13 is driven to rotate along the hinge of the corresponding upper bed frame part 11 and lower bed frame part 12 respectively, so that the two upper bed frame parts 11 and the two support parts 13 are rotated to be attached to the corresponding lower bed frame part 12 respectively, and then the two lower bed frame parts 12 are rotated along the hinge, and the two lower bed frame parts 12 are folded and abutted; at this time, the double-layer folding bed frame structure is in the storage position, the double-layer folding bed frame structure in this state is more convenient to store, and the folded structures are attached together, the space ratio is small, and it is convenient to carry. When the double-layer folding bed frame structure is unfolded, the two lower bed frame parts 12 are rotated along the hinge to be flush, the two upper bed frame parts 11 are pushed in the opposite direction, the support part 13 is driven to rotate along the hinge of the upper bed frame part 11 and the lower bed frame part 12, so that the two upper bed frame parts 11 are rotated to be parallel to the corresponding lower bed frame part 12 respectively, and then the middle bed frame assembly 2 is installed for limiting; at this time, the double-layer folding bed frame structure is in the unfolded position, which is convenient to carry load, so that the entire unfolding and storage process can be realized only through the hinge of the upper bed frame part 11 and the lower bed frame part 12 and the hinge of the two lower bed frame parts 12, without the user installing the foot pipe or other parts, which is convenient for the user to operate, reduces the operation burden of the user, saves the assembly time of the user, improves the user experience and satisfaction.

[0063] In the embodiment, as Figure 1As shown, two sets of side leg pipe assemblies 3 corresponding to the two sets of double-layer bed frame assemblies 1, and the two sets of side leg pipe assemblies 3 are respectively hinged with the upper bed frame component 11 and the lower bed frame component 12. In the unfolded position, the two sets of side leg pipe assemblies 3 are rotated to form a support; in the storage position, the side leg pipe assemblies 3 are rotated to fit the double-layer bed frame assembly 1. By rotating the side leg pipe assemblies 3, the side leg pipe assemblies 3 are unfolded and stored. In the unfolded position, the two sets of side leg pipe assemblies 3 are rotated along the hinge between the upper bed frame component 11 and the lower bed frame component 12 to form a support structure, ensuring the stability of the bed frame. In the storage position, the two sets of side leg pipe assemblies 3 are rotated to the position where they fit the double-layer bed frame assembly 1, reducing the occupied space and facilitating storage or transportation. In this way, the bed frame is quickly unfolded and stored through simple rotation operation, without the need for users to install leg pipes or other components, improving the convenience of use and space utilization. The side leg pipe assemblies 3 can also be hinged to the upper bed frame component 11 and the lower bed frame component 12 by screws.

[0064] In this embodiment, as shown in Figure 1 It also includes a rotating assembly 4, and the two lower bed frame components 12 are hinged with each other through the rotating assembly 4. The number of rotating assemblies 4 is two sets, which are arranged on the two sides of the lower bed frame component 12 to form a symmetrical support structure. This structure can automatically adjust the stress distribution when the bed frame structure is unfolded, ensuring that the bed frame structure maintains dynamic balance during use and avoiding shaking or instability caused by external forces. The two sets of rotating assemblies 4 work cooperatively during the unfolding and storage of the bed frame structure, ensuring smooth and stable operation of the bed frame structure.

[0065] In this embodiment, as shown in Figures 1-10 The rotating assembly 4 includes a first rotating seat 41 and a second rotating seat 42, one end of the first rotating seat 41 and the second rotating seat 42 is connected with the two lower bed frame components 12 respectively, and the other end of the first rotating seat 41 and the other end of the second rotating seat 42 are hinged with each other. Through the hinge of the first rotating seat 41 and the second rotating seat 42, the user only needs to complete the unfolding and storage of the bed frame structure through simple rotation operation, which is intuitive and efficient.

[0066] In this embodiment, as shown in Figures 1-10As shown, the side leg pipe assembly 3 comprises two first legs 31 and a first connecting arm 32 connecting the two first legs 31, and the first legs 31 are respectively hinged to the side of the corresponding upper bed frame component 11 and lower bed frame component 12. The first leg 31 rotates along the hinge with the corresponding upper bed frame component 11 and lower bed frame component 12, and the user can complete the unfolding or folding of the side leg pipe assembly 3 by pushing or pulling the first leg 31 without additional tools or complex operation steps. In the unfolded position, since the middle bed frame assembly 2 is fixedly connected to the two upper bed frame components 11, the mounting surface of the first leg 31 connected by the two sets of double-layer bed frame assemblies 1 and the upper bed frame component 11 forms a trapezoidal support, which can effectively prevent the double-layer folding bed frame structure from shaking or tilting during use, and ensure the stability and safety of the double-layer folding bed frame structure.

[0067] In this embodiment, as shown in Figures 1-4 , 6, 8, 10, the side leg pipe assembly 3 further comprises two push plates 33, one end of the push plate 33 is hinged to the side of the corresponding lower bed frame component 12, and the other end is hinged to the first leg 31. When the user pushes or pulls the first leg 31, the push plate 33 will be linked to make the unfolding and folding of the side leg pipe assembly 3 more smooth, and the user can complete the operation by simply pushing or pulling without additional tools or complex operation steps.

[0068] In this embodiment, as shown in Figure 1 , 3 , 7, it further comprises two sets of middle leg pipe assemblies 5 corresponding to the two sets of double-layer bed frame assemblies 1, and the two sets of middle leg pipe assemblies 5 are respectively hinged to the corresponding upper bed frame component 11 and lower bed frame component 12.

[0069] In this embodiment, as shown in Figure 1 , 3 , 7, the middle leg pipe assembly 5 comprises two second legs 51 and a second connecting arm 52 connecting the two second legs 51, and the second leg 51 is respectively hinged to the middle part of the corresponding upper bed frame component 11 and lower bed frame component 12. The middle leg pipe assembly 5 is located in the middle position of the double-layer bed frame assembly 1, which can provide additional support for the double-layer folding bed frame structure, reduce the stress burden of the upper bed frame component 11 and lower bed frame component 12, improve the stability of the double-layer bed frame assembly 1, and prevent the double-layer folding bed frame structure from sinking or deforming during use. The middle leg pipe assembly 5 is connected to the upper bed frame component 11 and lower bed frame component 12 by hinging, and the user can complete the unfolding and folding of the middle leg pipe assembly 5 by simply rotating, which is convenient to operate.

[0070] In this embodiment, as shown in Figures 1-10As shown, the support component 13 comprises a plurality of support rods 131, one end of the support rod 131 is hinged with the upper bed frame component 11, and the other end is hinged with the lower bed frame component 12. The number of support rods 131 in each set of double-layer folding bed frame assembly 1 is four, which is symmetrically distributed on both sides of the upper bed frame component 11 and the lower bed frame component 12. The upper bed frame component 11, the lower bed frame component 12 and the support rod 131 form a four-bar linkage mechanism, which realizes the unfolding and storage of the double-layer folding bed frame assembly 1.

[0071] In this embodiment, as shown in Figure 1 , 2 As shown, the middle bed frame assembly 2 comprises a middle bed frame component 21 and a connecting component 22, and the two ends of the middle bed frame component 21 are respectively detachably connected with two upper bed frame components 11 through the connecting component 22. The number of middle bed frame assemblies 2 is two groups, and the number of connecting components 22 is multiple. The detachable connection of the middle bed frame component 21 and the upper bed frame component 11 is realized through the connecting component 22. The connecting component 22 is provided with a clamping groove, and the side surface of the clamping groove is provided with a first fixing hole. The upper bed frame component 11 is provided with a second fixing hole, and the two ends of the middle bed frame component 21 are provided with a third fixing hole corresponding to the second fixing hole. When the middle bed frame assembly 2 is installed, the clamping groove on the connecting component 22 is clamped on the upper bed frame component 11, and the bolt is sequentially threaded through the first fixing hole, the second fixing hole and the third fixing hole. The two ends of the middle bed frame component 21 are respectively fixedly connected with the two upper bed frame components 11, forming an integral bed frame.

[0072] In this embodiment, as shown in Figures 1-9 It also comprises a plurality of anti-skid pads 6, which are respectively sleeved on the bottom of the first supporting leg 31 and the second supporting leg 51, thereby increasing the friction between the side foot pipe assembly 3 and the ground and the middle foot pipe assembly 5 and the ground, preventing the double-layer folding bed frame structure from sliding during use, and improving the stability of the double-layer folding bed frame structure.

[0073] The utility model also provides a folding bed, which comprises:

[0074] The double-layer folding bed frame structure as described above;

[0075] A flexible support bed cloth is sleeved on the two upper bed frame components 11 respectively. When the double-layer folding bed frame structure is in the unfolded position, the flexible support bed cloth is stretched by the two upper bed frame components 11. When the double-layer folding bed frame structure is in the storage position, the flexible support bed cloth is stored.

[0076] In order to better introduce the folding bed of the utility model, the following specific application is combined to explain: the folding bed is unfolded when in use, the flexible support bed cloth is supported open by the two upper bed frame components 11, and a bed surface space for rest is formed. The folding bed is folded when in storage, the flexible support bed cloth is also folded in it, the storage requirement is met, the storage space is saved, and carrying is facilitated. Only the hinging of the upper bed frame component 11 and the lower bed frame component 12 and the hinging of the two lower bed frame components 12 can realize unfolding and storage of the folding bed, multiple components need not be installed, operation is facilitated, the user can complete assembly of the folding bed in a short time, cumbersome operation procedures are avoided, the operation burden of the user is reduced, assembly time of the user is saved, user experience and satisfaction are improved.

[0077] In summary, the double-layer folding bed frame structure and the folding bed of the utility model have the following advantages:

[0078] (1) Convenient assembly: only the hinging of the upper bed frame component 11 and the lower bed frame component 12 and the hinging of the two lower bed frame components 12 can realize the entire unfolding and storage process, the user need not install a foot pipe or other components, user operation is facilitated, the operation burden of the user is reduced, assembly time of the user is saved, user experience and satisfaction are improved.

[0079] (2) Save storage space: when in storage, the folded structures are attached together, the storage space is greatly reduced, and carrying and storage are more facilitated.

[0080] (3) Stable support: in the unfolded position, the middle bed frame assembly 2 is fixedly connected with the two upper bed frame components 11, the first supporting legs 31 connected with the two double-layer bed frame assemblies 1 form trapezoidal supports with the mounting surfaces of the upper bed frame components 11, the double-layer folding bed frame structure can be effectively prevented from shaking or tilting in use, and the stability and safety of the double-layer folding bed frame structure are ensured.

[0081] (4) Fast opening and closing speed: the hinging of the upper bed frame component 11 and the lower bed frame component 12 and the hinging of the two lower bed frame components 12 realize fast unfolding and storage, operation is facilitated, and practicality is improved.

[0082] In summary, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0083] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A two-tiered folding bed frame structure, characterized by, It comprises: Two sets of double-layer bed frame assemblies (1) hinged to each other, the double-layer bed frame assembly (1) comprising an upper bed frame part (11), a lower bed frame part (12) and a support part (13), one end of the support part (13) being hinged to the upper bed frame part (11) and the other end being hinged to the lower bed frame part (12), the two lower bed frame parts (12) being hinged to each other and rotatable along the hinge, so that the double-layer folding bed frame structure is switched between an unfolded position in which the two lower bed frame parts (12) are flush and a storage position in which the two lower bed frame parts (12) are folded against each other; A middle bed frame assembly (2) detachably connected to the two upper bed frame parts (11) at both ends, in the unfolded position, the upper bed frame parts (11) are rotated to be parallel to the lower bed frame parts (12) through the support parts (13), and the middle bed frame assembly (2) is installed for limiting; in the storage position, the middle bed frame assembly (2) is detached, and the upper bed frame parts (11) are rotated to be attached to the lower bed frame parts (12) through the support parts (13).

2. The double-layer folding bed frame structure according to claim 1, wherein, It also comprises two sets of side leg pipe assemblies (3) corresponding to the two sets of double-layer bed frame assemblies (1), the two sets of side leg pipe assemblies (3) being hinged to the corresponding upper bed frame parts (11) and lower bed frame parts (12) respectively, in the unfolded position, the two sets of side leg pipe assemblies (3) are rotated to form support, in the storage position, the side leg pipe assemblies (3) are rotated to be attached to the double-layer bed frame assemblies (1).

3. The double-layer folding bed frame structure according to claim 1, wherein, It also comprises a rotating assembly (4) hinging the two lower bed frame parts (12) to each other.

4. The double-layer folding bed frame structure according to claim 3, wherein, The rotating assembly (4) comprises a first rotating seat (41) and a second rotating seat (42), one end of the first rotating seat (41) and one end of the second rotating seat (42) being connected to the two lower bed frame parts (12) respectively, the other end of the first rotating seat (41) being hinged to the other end of the second rotating seat (42).

5. The dual level foldable bunk bed structure of claim 2, wherein, The side leg pipe assembly (3) comprises two first legs (31) and a first connecting arm (32) connecting the two first legs (31), the first leg (31) being hinged to the side of the corresponding upper bed frame part (11) and lower bed frame part (12) respectively.

6. The two-tier foldable bed frame structure of claim 5, wherein, The side leg pipe assembly (3) further comprises two tabs (33), one end of the tab (33) being hinged to the side of the corresponding lower bed frame part (12) and the other end being hinged to the first leg (31).

7. The dual level foldable bunk bed structure of claim 1, wherein, It also comprises two sets of middle leg pipe assemblies (5) corresponding to the two sets of double-layer bed frame assemblies (1), the two sets of middle leg pipe assemblies (5) being hinged to the corresponding upper bed frame parts (11) and lower bed frame parts (12) respectively.

8. The double-layer folding bed frame structure according to claim 7, wherein, The middle leg pipe assembly (5) comprises two second legs (51) and a second connecting arm (52) connecting the two second legs (51), the second leg (51) being hinged to the middle part of the corresponding upper bed frame part (11) and lower bed frame part (12) respectively.

9. The dual level foldable bunk bed structure of claim 1, wherein, The support component (13) comprises a plurality of support rods (131), one end of which is hinged to the upper bed frame component (11) and the other end of which is hinged to the lower bed frame component (12).

10. A foldable bed characterized by Comprise: The double-layer folding bed frame structure according to any one of claims 1 to 9; Flexible support bed cloth, which is sleeved on the two upper bed frame components (11) respectively; when the double-layer folding bed frame structure is in the unfolded position, the flexible support bed cloth is unfolded by the two upper bed frame components (11); When the double-layer folding bed frame structure is in the storage position, the flexible support bed cloth is stored.

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