A sofa bed
By using rubber wheels and rubber pellets in the sliding support mechanism of the electric sofa bed, the problem of easy track damage has been solved, achieving smooth and stable form transitions, extending service life and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN YIMENGZE SMART HOME CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-26
AI Technical Summary
The tracks of existing electric sofa beds are prone to damage, leading to problems such as jamming, abnormal noise, and ball loosening, which affects their service life.
A sliding support mechanism is adopted, in which the first and second rubber wheels clamp the steel pipe from above and below, replacing the traditional steel ball slide rail. Rubber particles are added to the steel pipe to provide support, so as to achieve smooth and stable sliding.
It effectively solves the problems of jamming, abnormal noise, and ball drop that occur after the aging of traditional steel ball slide rails, extends the service life of sofa beds, reduces the failure rate, and lowers production costs.
Smart Images
Figure CN224268779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sofa bed technology, and in particular to a sofa bed. Background Technology
[0002] An electric sofa bed is a piece of furniture that combines the functions of a sofa and a bed. It can be transformed into its original form through an electric device. It usually consists of an upper frame and a lower frame, with an electric moving mechanism installed between them to control the movement of the upper frame on the lower frame to achieve the transformation.
[0003] However, the tracks on both sides used to support the upper frame are easily damaged. These tracks mainly use steel main rails with steel balls inside to achieve back-and-forth sliding operation. After aging or foreign objects accumulate during operation, they are prone to jamming, abnormal noise, and ball falling, which affects their service life.
[0004] Therefore, it is necessary to provide a sofa bed to solve the above-mentioned technical problems. Utility Model Content
[0005] To address the technical problem that existing electric sofa beds, whose tracks supporting the upper frame on both sides are designed with steel main rails and steel balls inside, are prone to jamming, abnormal noise, and ball falling off after aging or foreign objects adhering to them, thus affecting their service life, this utility model provides a sofa bed.
[0006] The sofa bed provided by this utility model includes: a lower frame and an upper frame. The upper frame is installed on the lower frame via an electric moving mechanism. An outer frame is fixedly installed on the top side of the lower frame. A steel pipe is fixedly installed on the inner side of the outer frame. A sliding support mechanism for supporting the upper frame is provided on the steel pipe.
[0007] Preferably, the sliding support mechanism includes: a slider welded to the upper frame, a second fixing plate fixedly mounted on the slider, a second rubber wheel rotatably mounted on the second fixing plate, the second rubber wheel contacting the bottom of the steel pipe; and a first fixing plate fixedly mounted on the upper frame, a first rubber wheel rotatably mounted on the first fixing plate, the first rubber wheel contacting the top of the steel pipe.
[0008] Preferably, a rubber granule is fixedly installed on the slider, and the rubber granule is in contact with the steel pipe.
[0009] Compared with related technologies, the sofa bed provided by this utility model has the following beneficial effects:
[0010] This utility model provides a sofa bed in which a steel pipe is clamped between the first and second rubber wheels in a sliding support mechanism, replacing the traditional sliding support design of steel ball bearing slide rails. The addition of rubber particles that contact the steel pipe further ensures smooth, stable, and stable operation of the sofa bed. This effectively solves problems such as jamming, abnormal noise, and ball drop that easily occur after the traditional steel ball bearing slide rails age, reducing the failure rate and extending the service life of the sofa bed. Compared with traditional steel ball bearing slide rails, this sliding support mechanism is not only simpler in structure but also reduces production costs, giving this sofa bed a price advantage over similar products. Attached Figure Description
[0011] Figure 1 A top-view perspective view of a preferred embodiment of the sofa bed provided by this utility model;
[0012] Figure 2 This is a side view of the three-dimensional structure of the present invention;
[0013] Figure 3 This is a bottom-view three-dimensional structural diagram of the present invention;
[0014] Figure 4 A three-dimensional structural schematic diagram of another embodiment of the sofa bed provided by this utility model;
[0015] Figure 5 for Figure 4 The diagram shows a side view of the structure.
[0016] Figure 6 A partial structural schematic diagram of another embodiment of the sofa bed provided by this utility model;
[0017] Figure 7 for Figure 4 A schematic diagram of the rear view structure.
[0018] The following are the labels in the diagram: 1. Lower frame; 2. Electric moving mechanism; 3. Upper frame; 4. Outer frame; 5. Steel pipe; 6. Sliding block; 7. First fixed plate; 8. First rubber wheel; 9. Second fixed plate; 10. Second rubber wheel; 11. Iron plate. Detailed Implementation
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification and the foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification or the foregoing drawings are used to distinguish different objects, not to describe a specific order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0021] This utility model embodiment provides a sofa bed, such as Figure 1-7 As shown, the sofa bed includes a lower frame 1 and an upper frame 3. The upper frame 3 is installed on the lower frame 1 via an electric moving mechanism 2. An outer frame 4 is fixedly installed on the top side of the lower frame 1. A steel pipe 5 is fixedly installed on the inner side of the outer frame 4. A sliding support mechanism for supporting the upper frame 3 is provided on the steel pipe 5.
[0022] In this embodiment, during use, the electric moving mechanism 2 can be used to drive the upper frame 3 to move on the lower frame 1, thereby enabling the sofa bed to switch between sofa and bed modes. During the movement, the sliding support mechanism plays a key role. This sliding support mechanism adopts a unique design, which uses the first rubber wheel 8 and the second rubber wheel 10 to clamp the steel pipe 5 from the top and bottom to replace the traditional steel ball slide rail to realize the sliding operation of the upper frame 3. When the upper frame 3 tends to move under the action of the electric moving mechanism 2, the first rubber wheel 8 and the second rubber wheel 10 will start to roll under the action of friction. Because the first rubber wheel 8 and the second rubber wheel 10 have good elasticity and wear resistance, and their contact with the steel pipe 5 is surface contact, the first rubber wheel 8 and the second rubber wheel 10 can more evenly distribute the pressure generated when the upper frame 3 moves during rolling, effectively reducing local stress concentration. At the same time, the material characteristics of the first rubber wheel 8 and the second rubber wheel 10 prevent them from experiencing problems such as jamming, abnormal noise, or ball drop after aging, unlike steel ball slide rails. Even after long-term use, the first rubber wheel 8 and the second rubber wheel 10 can still maintain relatively stable rolling performance, ensuring that the upper frame 3 slides smoothly and steadily on the steel pipe 5, thereby ensuring the reliability and stability of the sofa bed's form transformation and greatly extending its service life. It should be noted that the first rubber wheel 8 and the second rubber wheel 10 can also be rotatably mounted on the same iron plate 11, which is fixedly connected to the side of the upper frame 3. This can replace the slider 6, the second fixing plate 9, and the first fixing plate 7 for installing the first rubber wheel 8 and the second rubber wheel 10, making installation more convenient. Rubber particles are also installed on the iron plate, such as... Figures 4-7 As shown.
[0023] In a further preferred embodiment of this utility model, the sliding support mechanism includes: a slider 6 welded to the upper frame 3, a second fixing plate 9 fixedly mounted on the slider 6, a second rubber wheel 10 rotatably mounted on the second fixing plate 9, the second rubber wheel 10 contacting the bottom of the steel pipe 5; a first fixing plate 7 fixedly mounted on the upper frame 3, a first rubber wheel 8 rotatably mounted on the first fixing plate 7, the first rubber wheel 8 contacting the top of the steel pipe 5.
[0024] In this embodiment, when the electric drive mechanism drives the upper frame 3 to move on the lower frame 1 to achieve the sofa bed form conversion, the sliding support mechanism begins to function. When the upper frame 3 moves, the second rubber wheel 10 rolls at the bottom of the steel pipe 5, using rolling friction instead of sliding friction to reduce friction and make the upper frame 3 move more smoothly. At the same time, the first rubber wheel 8 also assists the movement of the upper frame 3 by rolling. The first rubber wheel 8 and the second rubber wheel 10 cooperate from top to bottom to clamp the steel pipe 5, forming a stable support and guide structure, ensuring that the upper frame 3 will not shake or deviate during movement. Moreover, since the first rubber wheel 8 and the second rubber wheel 10 are both rotatably installed, they can adapt to the movement state of the upper frame 3 during operation, further ensuring the stability of the sliding support. This effectively solves the problems of jamming, abnormal noise, and ball drop that may occur after the traditional steel ball slide rails have aged, improving the overall performance and user experience of the sofa bed.
[0025] In a further preferred embodiment of this utility model, a rubber particle is fixedly installed on the slider 6, and the rubber particle is in contact with the steel pipe 5.
[0026] In this embodiment, when the electric drive mechanism moves the upper frame 3 relative to the lower frame 1 to achieve the sofa bed transformation, the rubber particles fixedly installed on the slider 6 begin to play a key role. During operation, due to the soft and elastic properties of the rubber particles, when the upper frame 3 experiences slight swaying due to external factors or uneven internal forces, the rubber particles can buffer and absorb this swaying energy through their own elastic deformation. The reaction force generated by their elastic deformation will resist the swaying of the upper frame 3, making it more stable. At the same time, the friction between the rubber particles and the steel pipe 5 can also limit the swaying amplitude of the upper frame 3 to a certain extent, providing a certain support. This support method further enhances the stability between the upper frame 3 and the lower frame 1, which can solve the swaying problem that may occur during operation, making the sofa bed more stable during the transformation process.
[0027] In summary, compared with related technologies, this solution, by using the first rubber wheel 8 and the second rubber wheel 10 in the sliding support mechanism to clamp the steel pipe 5 from above and below, can replace the sliding support design of the traditional steel ball slide rail. Furthermore, the addition of rubber particles in contact with the steel pipe 5 achieves smooth, stable, and consistent operation of the sofa bed. This effectively solves the problems of jamming, abnormal noise, and ball drop that easily occur after the traditional steel ball slide rail ages, reducing the failure rate and extending the service life of the sofa bed. Compared with the traditional steel ball slide rail, this sliding support mechanism is not only simpler in structure but also reduces production costs, giving this sofa bed a price advantage over similar products.
[0028] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.
[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.
Claims
1. A sofa bed comprising a lower frame (1) and an upper frame (3), the upper frame (3) being mounted on the lower frame (1) by means of an electrically powered moving mechanism (2), characterised in that, An outer frame (4) is fixedly installed on the top side of the lower frame (1), and a steel pipe (5) is fixedly installed on the inner side of the outer frame (4). A sliding support mechanism for supporting the upper frame (3) is provided on the steel pipe (5).
2. The sofa bed according to claim 1, characterized in that, The sliding support mechanism includes: A slider (6) is welded to the upper frame (3), a second fixing plate (9) is fixedly installed on the slider (6), a second rubber wheel (10) is rotatably installed on the second fixing plate (9), and the second rubber wheel (10) is in contact with the bottom of the steel pipe (5); A first fixing plate (7) is fixedly installed on the upper frame (3), and a first rubber wheel (8) is rotatably installed on the first fixing plate (7). The first rubber wheel (8) is in contact with the top of the steel pipe (5).
3. The sofa bed according to claim 2, characterized in that, A rubber pellet is fixedly installed on the slider (6), and the rubber pellet is in contact with the steel pipe (5).