A sofa bed structure with storage function
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN RUIHAO SMART HOME CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-30
Smart Images
Figure CN224420519U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furniture technology, specifically to a sofa bed structure with storage function. Background Technology
[0002] With the acceleration of urbanization and the popularization of small apartments, multifunctional furniture has become a core demand in modern home design due to its space efficiency. Sofa beds, as a typical example, can be transformed into sitting and lying functions, making them especially suitable for living rooms, studies, and other scenarios where temporary overnight stays are required.
[0003] However, existing sofa beds suffer from structural defects in terms of smoothness and stability during form transformation. Their adjustment mechanisms rely on multiple hinges or folding frames, and height differences can easily occur at the joints of various components after unfolding, requiring complex leveling operations. Furthermore, gaps can easily appear due to excessive displacement during form transformation.
[0004] Therefore, there is an urgent need for a sofa bed structure with storage function to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a sofa bed structure with storage function, which has the advantages of smooth and stable form transformation, flat support surface without drop after transformation, effective avoidance of gaps, and bottom storage space. It solves the problems of existing sofa beds having uneven support surface after form transformation that require additional leveling and gaps that are easy to be generated during the transformation process.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a sofa bed structure with storage function, including a frame, the frame being fixedly installed on a base frame, a backrest being rotatably installed on the frame via a pivot, and an adjustment mechanism being installed on the frame for switching between the sofa bed's bed mode and sofa mode; the adjustment mechanism includes a fixed frame fixed to the frame, a first adjustment frame slidably installed on the fixed frame, and a second adjustment frame slidably installed on the first adjustment frame; wherein, the upper surfaces of the fixed frame, the first adjustment frame, and the second adjustment frame are on the same plane, the fixed frame is provided with a first limiting block for limiting the first adjustment frame, and the first adjustment frame is provided with a second limiting block for limiting the second adjustment frame.
[0007] Preferably, a limiting groove is provided on the frame, and a limiting rod is inserted into the limiting groove. The limiting rod is used to limit the rotation angle of the backrest.
[0008] In the design, the limiting groove on the frame and the limiting rod inserted therein effectively limit the rotation angle of the backrest. This structure has the advantages of simple and reliable operation and low cost. The limiting rod adopts a pluggable design, which makes it easy to adjust or fix the tilt angle of the backrest according to different needs, thereby improving the stability and comfort of use.
[0009] Preferably, the base frame is welded and installed on the frame body, and the side of the base frame opposite to the fixed frame forms a space for storing items.
[0010] In the design, the base frame is welded and installed on the frame to achieve a solid connection of the overall structure. This design has the advantages of high structural strength and long-term reliability. At the same time, the side of the base frame opposite to the fixed frame adopts a design to form a specific space, making full use of the area under the sofa bed to realize the storage function of items.
[0011] Preferably, the fixing frame includes a crossbar with both ends welded to the frame body. Guide rods are installed at equal intervals on the crossbar, and the guide rods cooperate with the first limiting block to limit the movement trajectory of the first adjusting frame.
[0012] In the design, the fixed frame includes a crossbar. The welded connection between the two ends of the crossbar and the frame body ensures the stable installation of the fixed frame on the frame body. This structure has the advantages of strong load-bearing capacity and resistance to deformation. The guide rods installed at equal intervals on the crossbar provide precise guidance for the movement trajectory of the first adjustment frame. The guide rods and the first limit block work together to ensure that the first adjustment frame slides smoothly and does not deviate. This provides a basis for the subsequent storage and unfolding of the first adjustment frame relative to the fixed frame, improving the adjustment accuracy and stability.
[0013] Preferably, the first adjusting frame includes a first limiting frame, the bottom of which has a first sliding groove with a convex cross-section, the size of which matches the first limiting block; a support frame is fixed on the first limiting frame, the bottom of which has a first caster that matches the direction of the first sliding groove; the first adjusting frame is slidably connected to the fixed frame through the cooperation of the first limiting block and the first sliding groove.
[0014] In the design, the bottom of the first limiting frame has a convex-shaped groove, which achieves precise matching and sliding connection with the first limiting block on the fixed frame. This convex-shaped mating structure effectively prevents the first adjusting frame from derailing or wobbling during sliding. The support frame fixed on the first limiting frame provides stable support for the upper structure. The first caster at the bottom of the support frame is arranged to match the direction of the first groove, significantly reducing sliding friction and making the movement of the first adjusting frame easier and smoother. In the folded state, the first adjusting frame can completely overlap the fixed frame; in the unfolded state, the first adjusting frame can slide smoothly along the guide rod to the leading edge position of the fixed frame.
[0015] Preferably, the second adjusting frame includes a second limiting frame, the bottom of which has a second sliding groove with a convex cross-section, the size of which matches the second limiting block; a panel is fixed on the second limiting frame, the bottom of which has a second caster that matches the direction of the second sliding groove; the second adjusting frame is slidably connected to the first adjusting frame through the cooperation of the second limiting block and the second sliding groove.
[0016] In the design, the second sliding groove with a convex cross-section at the bottom of the second limiting frame achieves precise matching and sliding connection with the second limiting block on the first adjusting frame. This convex-shaped mating structure effectively limits the travel of the second adjusting frame and prevents it from derailing or wobbling during sliding. The panel fixed on the second limiting frame serves as the main support surface of the sofa bed. The second casters at the bottom of the panel are arranged to match the direction of the second sliding groove, significantly reducing sliding friction and making the movement of the second adjusting frame easier and smoother, while ensuring the load-bearing capacity of the panel. In the folded state, the second adjusting frame is nested inside the first adjusting frame and overlaps with it on the fixed frame. In the unfolded state, the second adjusting frame can move synchronously with the first adjusting frame to a predetermined position, and then slide out relative to the first adjusting frame to its leading edge, ultimately forming a flat bed surface support structure together with the first adjusting frame and the fixed frame.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] This utility model achieves a smooth and stable transition between sofa and bed modes by setting a fixed frame that is fixedly installed on the frame body, a first adjustment frame that is slidably installed on the fixed frame, and a second adjustment frame that is slidably installed on the first adjustment frame. The upper surfaces of the fixed frame, the first adjustment frame, and the second adjustment frame are always on the same plane. This ensures that the overall support surface is flat and without drop after the transition, and no additional leveling operation is required.
[0019] Meanwhile, the first limiting block on the fixed frame precisely limits the sliding stroke of the first adjusting frame, and the second limiting block on the first adjusting frame precisely limits the sliding stroke of the second adjusting frame, effectively avoiding gaps caused by excessive component displacement during the transformation process. In addition, the base of the fixed mounting frame naturally forms a storage space on the side opposite to the fixed frame, making full use of the bottom area of the structure and providing practical storage functionality. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;
[0022] Figure 3 This is a schematic diagram of the unfolded structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the fixing frame structure of this utility model;
[0024] Figure 5 This is a schematic diagram of the first adjustment frame of this utility model from one perspective.
[0025] Figure 6 This is a schematic diagram of the first adjustment frame of this utility model from another perspective;
[0026] Figure 7 This is a schematic diagram of the second adjustment frame of this utility model from one perspective;
[0027] Figure 8 This is a schematic diagram of the second adjustment frame of this utility model from another perspective.
[0028] In the diagram: 1. Frame; 11. Limiting groove; 12. Limiting rod; 13. Base frame; 2. Backrest; 3. Adjustment mechanism; 31. Fixed frame; 311. Crossbar; 312. Guide rod; 313. First limiting block; 32. First adjusting frame; 321. First limiting frame; 322. Second limiting block; 323. Support frame; 324. First caster; 325. First slide groove; 33. Second adjusting frame; 331. Second limiting frame; 332. Panel; 333. Second caster; 334. Second slide groove. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Example 1
[0031] like Figures 1 to 8As shown, one embodiment of this utility model provides a sofa bed structure with storage function, including a frame 1, which is fixedly installed on a base frame 13. A backrest 2 is rotatably installed on the frame 1 via a pivot. An adjustment mechanism 3 is installed on the frame 1, which is used to switch the sofa bed between bed and sofa modes. The adjustment mechanism 3 includes a fixed frame 31 fixed to the frame 1, a first adjustment frame 32 slidably installed on the fixed frame 31, and a second adjustment frame 33 slidably installed on the first adjustment frame 32. The upper surfaces of the fixed frame 31, the first adjustment frame 32, and the second adjustment frame 33 are on the same plane. The fixed frame 31 is provided with a first limiting block 313 for limiting the first adjustment frame 32, and the first adjustment frame 32 is provided with a second limiting block 322 for limiting the second adjustment frame 33.
[0032] Specifically, by setting a fixed frame 31 fixedly installed on the frame 1, a first adjustment frame 32 slidably installed on the fixed frame 31, and a second adjustment frame 33 slidably installed on the first adjustment frame 32, and ensuring that the upper surfaces of the fixed frame 31, the first adjustment frame 32, and the second adjustment frame 33 are always on the same plane, a smooth and stable transition between the sofa form and the bed form is achieved, and the overall support surface is flat and without drop after the transition, without the need for additional leveling operations.
[0033] Meanwhile, the first limiting block 313 on the fixed frame 31 precisely limits the sliding stroke of the first adjusting frame 32, and the second limiting block 322 on the first adjusting frame 32 precisely limits the sliding stroke of the second adjusting frame 33, effectively avoiding gaps caused by excessive component displacement during the transformation process. In addition, the base frame 13 of the fixed mounting frame 1 naturally forms a storage space on the side opposite to the fixed frame 31, making full use of the bottom area of the structure and providing practical storage functionality.
[0034] Furthermore, a limiting groove 11 is provided on the frame 1, and a limiting rod 12 is inserted into the limiting groove 11. The limiting rod 12 is used to limit the rotation angle of the backrest 2.
[0035] Specifically, the limiting groove 11 on the frame 1 and the limiting rod 12 inserted therein effectively limit the rotation angle of the backrest 2. This structure has the advantages of simple and reliable operation and low cost. The limiting rod 12 adopts a pluggable design, which makes it easy to adjust or fix the tilt angle of the backrest 2 according to different needs, thereby improving the stability and comfort of use.
[0036] Furthermore, the base frame 13 is welded and installed on the frame 1, and the side of the base frame 13 opposite to the fixed frame 31 forms a space for storing items.
[0037] Specifically, the base frame 13 is welded and installed on the frame 1 to achieve a solid connection of the overall structure. This design has the advantages of high structural strength and long-term reliability. At the same time, the side of the base frame 13 opposite to the fixed frame 31 is designed to form a specific space, making full use of the area under the sofa bed to realize the storage function of items.
[0038] Furthermore, the fixed frame 31 includes a crossbar 311, with both ends of the crossbar 311 welded to the frame body 1. Guide rods 312 are equidistantly installed on the crossbar 311. The guide rods 312 cooperate with the first limiting block 313 to limit the movement trajectory of the first adjusting frame 32.
[0039] Specifically, the fixed frame 31 includes a crossbar 311. The welded connection between the two ends of the crossbar 311 and the frame body 1 enables the fixed frame 31 to be stably installed on the frame body 1. This structure has the advantages of strong load-bearing capacity and resistance to deformation. The guide rods 312 installed at equal intervals on the crossbar 311 enable precise guidance of the movement trajectory of the first adjustment frame 32. The guide rods 312 and the first limit block 313 work together to ensure that the first adjustment frame 32 slides smoothly and does not deviate, providing a basis for the subsequent storage and unfolding of the first adjustment frame 32 relative to the fixed frame 31, and improving the adjustment accuracy and stability.
[0040] Furthermore, the first adjusting frame 32 includes a first limiting frame 321, the bottom of which has a first sliding groove 325 with a convex cross-section, the size of which matches the first limiting block 313; a support frame 323 is fixed on the first limiting frame 321, the bottom of which has a first caster 324 that matches the direction of the first sliding groove 325; the first adjusting frame 32 is slidably connected to the fixed frame 31 through the cooperation of the first limiting block 313 and the first sliding groove 325.
[0041] Specifically, the first limiting frame 321 has a convex-shaped first groove 325 at its bottom, which achieves precise matching and sliding connection with the first limiting block 313 on the fixed frame 31. This convex-shaped mating structure effectively prevents the first adjusting frame 32 from derailing or wobbling during sliding. The support frame 323 fixed on the first limiting frame 321 provides stable support for the upper structure. The first caster 324 at the bottom of the support frame 323 is arranged in a direction matching the first groove 325, which significantly reduces sliding friction and makes the movement of the first adjusting frame 32 easier and smoother. In the folded state, the first adjusting frame 32 can completely overlap the fixed frame 31; in the unfolded state, the first adjusting frame 32 can smoothly slide out along the guide rod 312 to the leading edge position of the fixed frame 31.
[0042] Furthermore, the second adjustment frame 33 includes a second limiting frame 331, the bottom of which has a second sliding groove 334 with a convex cross-section, the size of which matches the second limiting block 322; a panel 332 is fixed on the second limiting frame 331, the bottom of which has a second caster 333 that matches the direction of the second sliding groove 334; the second adjustment frame 33 is slidably connected to the first adjustment frame 32 through the cooperation of the second limiting block 322 and the second sliding groove 334.
[0043] Specifically, the second sliding groove 334 with a convex cross-section at the bottom of the second limiting frame 331 achieves precise matching and sliding connection with the second limiting block 322 on the first adjusting frame 32. This convex-shaped mating structure effectively limits the travel of the second adjusting frame 33 and prevents it from derailing or wobbling during sliding. The panel 332 fixed on the second limiting frame 331 serves as the main support surface of the sofa bed. The second casters 333 at the bottom of the panel 332 are arranged in a direction matching the second sliding groove 334, significantly reducing sliding friction and making the movement of the second adjusting frame 33 easier and smoother, while ensuring the load-bearing capacity of the panel 332. In the folded state, the second adjusting frame 33 is nested inside the first adjusting frame 32 and overlaps with it on the fixed frame 31. In the unfolded state, the second adjusting frame 33 can move synchronously with the first adjusting frame 32 to a predetermined position, and then slide out relative to the first adjusting frame 32 to its leading edge, ultimately forming a flat bed support structure together with the first adjusting frame 32 and the fixed frame 31.
[0044] The specific operating steps for using this utility model are as follows:
[0045] When transforming from sofa mode to bed mode, grasp the support frame 323 of the first adjustment frame 32 and pull the first adjustment frame 32 horizontally along the guide rod 312 of the fixed frame 31. At this time, the first sliding groove 325 at the bottom of the first limiting frame 321 slides into contact with the first limiting block 313 of the fixed frame 31, and the first caster 324 rolls along the track until the first limiting block 313 stops against the end of the first sliding groove 325. At this time, the first adjustment frame 32 slides out completely to the front edge position of the fixed frame 31.
[0046] Hold the panel 332 of the second adjustment frame 33 and pull the second adjustment frame 33 horizontally along the first adjustment frame 32. The second sliding groove 334 at the bottom of the second limiting frame 331 slides and engages with the second limiting block 322 of the first adjustment frame 32, and the second caster 333 rolls synchronously until the second limiting block 322 stops against the end of the second sliding groove 334. At this time, the upper surfaces of the fixed frame 31, the first adjustment frame 32, and the second adjustment frame 33 are seamlessly joined to form a flat bed surface. If it is necessary to adjust the backrest tilt for easier bed positioning, pull out the limiting rod 12 in the upper limiting groove 11 of the frame 1, rotate the backrest 2, and then reinsert the limiting rod 12.
[0047] When the bed mode is restored to the sofa mode, push the panel 332 to make the second adjustment frame 33 slide in the opposite direction along the second limit block 322. The second slide groove 334 and the second caster 333 work together until the second adjustment frame 33 is completely nested back into the first adjustment frame 32.
[0048] Pushing the support frame 323 causes the first adjusting frame 32 to slide in the opposite direction along the guide rod 312. The first sliding groove 325 cooperates with the first limiting block 313 to guide the movement, and the first caster 324 rolls back to its original position until the first adjusting frame 32 is completely overlapped with the fixed frame 31. Adjust the backrest 2 to the sofa-like angle as needed, and lock it in the limiting groove 11 by the limiting rod 12.
[0049] When storing or retrieving items, items can be taken directly from the bottom space formed by the base frame 13 and the fixed frame 31 on the opposite side, without the need to operate the adjustment mechanism 3.
[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A sofa bed structure with storage function, comprising a frame (1), the frame (1) being fixedly installed on a base frame (13), and a backrest (2) being rotatably installed on the frame (1) via a pivot, characterized in that: An adjustment mechanism (3) is installed on the frame (1). The adjustment mechanism (3) is used to switch the sofa bed between the bed mode and the sofa mode. The adjustment mechanism (3) includes a fixed frame (31) fixed on the frame (1), a first adjustment frame (32) slidably installed on the fixed frame (31), and a second adjustment frame (33) slidably installed on the first adjustment frame (32). The upper surfaces of the fixed frame (31), the first adjustment frame (32), and the second adjustment frame (33) are on the same plane. The fixed frame (31) is provided with a first limiting block (313) for limiting the first adjustment frame (32), and the first adjustment frame (32) is provided with a second limiting block (322) for limiting the second adjustment frame (33).
2. The sofa bed structure with storage function according to claim 1, characterized in that, The frame (1) has a limiting groove (11) and a limiting rod (12) is inserted in the limiting groove (11). The limiting rod (12) is used to limit the rotation angle of the backrest (2).
3. The sofa bed structure with storage function according to claim 1, characterized in that, The base frame (13) is welded and installed on the frame (1). The side of the base frame (13) opposite to the fixed frame (31) forms a space for storing items.
4. The sofa bed structure with storage function according to claim 1, characterized in that, The fixed frame (31) includes a crossbar (311), with both ends of the crossbar (311) welded to the frame (1). Guide rods (312) are installed at equal intervals on the crossbar (311). The guide rods (312) cooperate with the first limiting block (313) to limit the movement trajectory of the first adjusting frame (32).
5. The sofa bed structure with storage function according to claim 1, characterized in that, The first adjustment frame (32) includes a first limiting frame (321), and the bottom of the first limiting frame (321) is provided with a first sliding groove (325) with a cross-section of convex shape. The size of the first sliding groove (325) matches the first limiting block (313). A support frame (323) is fixed on the first limiting frame (321), and the bottom of the support frame (323) is provided with a first caster (324) that matches the direction of the first sliding groove (325). The first adjustment frame (32) is slidably connected to the fixed frame (31) through the cooperation of the first limiting block (313) and the first sliding groove (325).
6. The sofa bed structure with storage function according to claim 1, characterized in that, The second adjustment frame (33) includes a second limiting frame (331), and the bottom of the second limiting frame (331) is provided with a second sliding groove (334) with a cross-section of convex shape. The size of the second sliding groove (334) matches the second limiting block (322). A panel (332) is fixed on the second limiting frame (331), and the bottom of the panel (332) is provided with a second caster (333) that matches the direction of the second sliding groove (334). The second adjustment frame (33) is slidably connected to the first adjustment frame (32) through the cooperation of the second limiting block (322) and the second sliding groove (334).