Guide rail structure and sofa bed

Abstract

The utility model provides a guide rail structure and sofa bed, guide rail structure includes fixed frame and moving frame, guide rail device, fixed frame and moving frame sliding connection, guide rail device includes fixed shaft and sliding assembly, the fixed shaft is along the width direction of fixed frame and is fixed on the fixed frame, sliding assembly is set to the outside of fixed shaft and is connected with fixed shaft sliding, and sliding assembly is fixedly connected with moving frame, wherein, when pushing and pulling moving frame, sliding assembly slides along fixed shaft to make moving frame slide relative to fixed frame, the utility model discloses through the fixed shaft fixed on the fixed frame, sliding assembly is set to the outside of fixed shaft and is connected with fixed shaft sliding, then sliding assembly is fixed on moving frame to make moving frame slide along the width direction of fixed frame through the connection of sliding assembly and fixed shaft to adjust the total width of moving frame and fixed frame, and the friction resistance of guide rail structure is small, and the stability of sliding is high, and the pushing and pulling operation of moving frame is simple, smooth, can realize unilateral pushing and pulling.

Description

Technical Field

[0001] This utility model relates to the field of mechanical drive, and in particular to a guide rail structure and a sofa bed. Background Technology

[0002] With the increasing trend of smaller urban living spaces, sofa beds, which combine the functions of sofas and beds, have become an important piece of furniture for improving space utilization. However, sofa beds on the market today generally suffer from poor user experience. In daily use, users often encounter difficulties pushing and pulling the sofa bed, mainly due to unreasonable design of the slide rails and sliders. Insufficient precision in their fit, coupled with poor lubrication, leads to increased frictional resistance. Furthermore, sofa beds are prone to jamming during use, especially when the user applies uneven force or when the sofa bed undergoes slight deformation due to long-term weight-bearing. Misalignment between the slide rails and sliders can severely affect normal use. In addition, traditional sofa bed structural design flaws result in the lack of unilateral pushing and pulling functionality. Users must apply force with both hands simultaneously to unfold or fold the bed. When the sofa bed is placed against a wall, it cannot be operated from one side, greatly limiting its usability. These problems not only reduce the practicality of sofa beds but also fail to meet the modern home's demands for convenience and flexibility. Utility Model Content

[0003] The present invention provides a guide rail structure and a sofa bed to reduce the frictional resistance of the guide rail structure, making the push-pull operation simple and smooth, and enabling unilateral push-pull.

[0004] This utility model provides a guide rail structure, which includes:

[0005] A fixed frame and a movable frame, wherein the fixed frame and the movable frame are slidably connected;

[0006] A guide rail device includes a fixed shaft and a sliding assembly. The fixed shaft is fixedly mounted on the fixed frame along the width direction of the fixed frame. The sliding assembly is sleeved on the outside of the fixed shaft and slidably connected to the fixed shaft. The sliding assembly is also fixedly connected to the movable frame.

[0007] When the movable frame is pushed or pulled, the sliding component slides along the fixed axis so that the movable frame slides relative to the fixed frame.

[0008] In the guide rail structure provided by this utility model, the sliding component includes a fixed plate and a sliding member. The fixed plate is fixedly connected to the movable frame, and the sliding member is fixedly connected to the fixed plate and slidably connected to the fixed shaft.

[0009] In the guide rail structure provided by this utility model, the sliding member is provided with through holes on both sides, and one end of the fixed shaft passes horizontally through the through holes and is slidably connected to the sliding member.

[0010] In the guide rail structure provided by this utility model, the sliding member is further provided with a fixing hole, the fixing plate is provided with a countersunk hole, the countersunk hole is correspondingly provided with the fixing hole, and one end of the first locking member passes through the countersunk hole and is fixed with the fixing hole.

[0011] In the guide rail structure provided by this utility model, there are two sliding members, and the two sliding members are spaced apart on both sides of the fixed plate.

[0012] In the guide rail structure provided by this utility model, the fixing plate is further provided with a fixing part, which is provided by the edge of the fixing plate protruding outward, and the fixing part is fixedly connected to the movable frame.

[0013] In the guide rail structure provided by this utility model, the fixing part is provided with a mounting hole, the movable frame is provided with a locking hole, the locking hole is provided corresponding to the mounting hole, and one end of the second locking member passes through the mounting hole and is locked and fixed with the locking hole.

[0014] In the guide rail structure provided by this utility model, the two ends of the fixed shaft are provided with mounting parts, the mounting parts extend along both sides of the fixed shaft, and the mounting parts are fixedly connected to the fixed frame.

[0015] In the guide rail structure provided by this utility model, the sliding element is a plastic slider or a linear bearing; and / or, the fixed shaft is an optical shaft.

[0016] In the guide rail structure provided by this utility model, the fixed frame is provided with a plurality of spaced mounting grooves, the mounting grooves are formed by an inward recess from one side of the fixed frame, and the movable frame is provided with a plurality of spaced protrusions, the protrusions being adapted to and embedded in the mounting grooves.

[0017] In the guide rail structure provided by this utility model, the movable frame is further provided with a first fixed section and a second fixed section that are both fixedly connected to the sliding component. The first fixed section is fixedly connected to two adjacent protrusions, and the two ends of the second fixed section are respectively fixed to both sides of the movable frame along the length direction of the movable frame.

[0018] In the guide rail structure provided by this utility model, a limiting section is provided on one side of the fixed frame, the limiting section extends along the length direction of the fixed frame, and one end of the fixed shaft is fixedly connected to the limiting section; when the movable frame slides to the outermost side, the second fixed section abuts against the limiting section.

[0019] This utility model also provides a sofa bed, which includes:

[0020] The guide rail structure is any one of the guide rail structures described above.

[0021] This application uses a fixed shaft to fix the fixed frame, and a sliding component is sleeved on the outside of the fixed shaft and slidably connected to the fixed shaft. The sliding component is then fixed to the movable frame, so that the movable frame slides along the width direction of the fixed frame through the connection between the sliding component and the fixed shaft, thereby adjusting the total width of the movable frame and the fixed frame. The guide rail structure has low frictional resistance and high sliding stability, and the push-pull operation of the movable frame is simple and smooth, and unilateral push-pull can be realized. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figures 1a-1b These are structural diagrams of the guide rail structure when it is not pulled in this embodiment of the present invention;

[0024] Figures 2a-2b These are structural diagrams of the guide rail structure when it is pulled to the outermost position in this embodiment of the present invention.

[0025] Figure 3 This is a structural diagram of the guide rail device in an embodiment of the present utility model;

[0026] Figure 4 This is an exploded view of the guide rail device in an embodiment of this utility model.

[0027] The labels for the attached figures are as follows:

[0028] 1. Fixed frame; 11. Mounting groove; 12. Limiting section; 2. Moving frame; 21. Protrusion; 22. First fixed section; 23. Second fixed section; 24. Body; 25. Sliding leg; 3. Guide rail device; 31. Fixed shaft; 311. Mounting part; 32. Sliding assembly; 321. Fixed plate; 3211. Countersunk hole; 3212. Fixed part; 32121. Mounting hole; 322. Sliding element; 3221. Through hole; 3222. Fixing hole. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] Reference Figures 1a to 4The diagram illustrates an embodiment of the guide rail structure and sofa bed of this utility model. The guide rail structure includes a fixed frame 1, a movable frame 2, and a guide rail device 3. The fixed frame 1 and the movable frame 2 are slidably connected. The guide rail device 3 includes a fixed shaft 31 and a sliding assembly 32. The fixed shaft 31 is fixedly mounted on the fixed frame 1 along its width direction. The sliding assembly 32 is sleeved on the outside of the fixed shaft 31 and slidably connected to it. The sliding assembly 32 is also fixedly connected to the movable frame 2. When the movable frame 2 is pushed or pulled, the sliding assembly 32 slides along the fixed shaft 31, causing the movable frame 2 to slide relative to the fixed frame 1.

[0031] Specifically, the guide rail structure is used to drive the sliding of structural components, allowing the sliding structural components to slide relative to other structural components. In this embodiment, the guide rail structure is used for the sliding of the sofa bed frame, enabling the sofa bed to switch between sofa and bed modes, thereby improving the user experience. In particular, the guide rail structure is not limited to the sofa bed field; it can also be used in technical fields that utilize mechanical drives for sliding operations.

[0032] The guide rail structure includes a fixed frame 1, a movable frame 2, and a guide rail device 3. The fixed frame 1 is a fixed structure, and the movable frame 2 is a movable structure. The fixed frame 1 and the movable frame 2 are both located on the same horizontal plane. The fixed frame 1 and the movable frame 2 are both main structures. In this embodiment, the fixed frame 1 and the movable frame 2 constitute the bed board of the sofa bed. The movable frame 2 is slidably connected to the fixed frame 1 through the guide rail device 3. The guide rail device 3 is used to drive the movable frame 2 to slide under the push and pull of the force.

[0033] The guide rail device 3 includes a fixed shaft 31 and a sliding component 32. The fixed shaft 31 is used to guide the sliding component 32. The fixed shaft 31 extends along the width direction of the fixed frame 1 and is fixedly connected to the fixed frame 1. The sliding component 32 is sleeved on the outside of the fixed shaft 31 and is slidably connected to the fixed shaft 31, so that the sliding component 32 can slide along the extension direction of the fixed shaft 31. The sliding component 32 is fixedly connected to the movable frame 2, so that under the application of force, the movable frame 2 can drive the sliding component 32 to slide along the fixed shaft 31, thereby allowing the movable frame 2 to slide along the width direction of the fixed frame 1.

[0034] When the user pushes or pulls the movable frame 2, the force drives the sliding component 32 to slide along the extension direction of the fixed shaft 31, thereby causing the movable frame 2 to slide relative to the width direction of the fixed frame 1, so that the total width of the movable frame 2 and the fixed frame 1 increases or decreases. The user can adjust the total width of the movable frame 2 and the fixed frame 1 according to actual needs.

[0035] This application uses a fixed shaft 31 to fix the fixed frame 1, and a sliding component 32 is sleeved on the outside of the fixed shaft 31 and slidably connected to the fixed shaft 31. The sliding component 32 is then fixed to the movable frame 2, so that the movable frame 2 slides along the width direction of the fixed frame 1 through the connection between the sliding component 32 and the fixed shaft 31, thereby adjusting the total width of the movable frame 2 and the fixed frame 1. The guide rail structure has low frictional resistance and high sliding stability, and the push-pull operation of the movable frame 2 is simple and smooth, and unilateral push-pull can be realized.

[0036] More specifically, the guide rail device 3 is fixed to the bottom side of the fixed frame 1 and the movable frame 2, thereby improving the aesthetics.

[0037] More specifically, the guide rail device 3 is provided in two sets, and the two sets of guide rail devices 3 are respectively provided on both sides of the fixing member and the movable frame 2, thereby further improving the stability of the movable frame 2 when sliding.

[0038] In one embodiment, reference is made to Figure 4 As shown, the sliding assembly 32 includes a fixed plate 321 and a sliding member 322. The fixed plate 321 is fixedly connected to the movable frame 2, and the sliding member 322 is fixedly connected to the fixed plate 321 and slidably connected to the fixed shaft 31. Specifically, the sliding assembly 32 includes a fixed plate 321 and a sliding member 322. The fixed plate 321 is used to fixably connect the movable frame 2 and the sliding member 322. One side of the fixed plate 321 is fixedly connected to the movable frame 2, and the other side of the fixed plate 321 is fixedly connected to the sliding member 322. At the same time, the sliding member 322 is slidably connected to the fixed shaft 31, so that the movable frame 2, driven by a force, moves the fixed plate 321, thereby causing the sliding member 322 to slide along the length of the fixed shaft 31, and thus causing the movable frame 2 to slide along the width direction of the fixed frame 1.

[0039] The sliding component 32 has a simple structure, and the connection between the moving frame 2 and the fixed shaft 31 through the fixed plate 321 and the sliding member 322 improves the structural stability of the guide rail device 3 and the stability of the sliding member 322 sliding along the fixed shaft 31.

[0040] In a specific embodiment, refer to Figures 3 to 4 As shown, the sliding member 322 has through holes 3221 extending through both sides. One end of the fixed shaft 31 passes horizontally through the through holes 3221 and is slidably connected to the sliding member 322. Specifically, the sliding member 322 is slidably connected to the fixed shaft 31, and the sliding member 322 is sleeved on the outside of the fixed shaft 31. Therefore, the sliding member 322 has through holes 3221 extending through both sides, allowing one end of the fixed shaft 31 to pass horizontally through the through holes 3221 so that the sliding member 322 is sleeved on the outside of the fixed shaft 31. When the fixed plate 321 drives the sliding member 322 to slide, the sliding member 322 slides along the fixed shaft 31. The sliding member 322 can be stably positioned on the fixed shaft 31, resulting in high structural stability of the guide rail device 3.

[0041] In one embodiment, reference is made to Figure 4 As shown, the sliding member 322 is also provided with a fixing hole 3222, and the fixing plate 321 is provided with a countersunk hole 3211. The countersunk hole 3211 is correspondingly provided with the fixing hole 3222, and one end of the first locking member passes through the countersunk hole 3211 and is fixed with the fixing hole 3222. Specifically, the sliding member 322 is further provided with a fixing hole 3222. The fixing hole 3222 is formed by an inward recess on one side of the sliding member 322 and does not penetrate the other side of the sliding member 322. The fixing hole 3222 and the through hole 3221 do not interfere with each other. The fixing plate 321 is provided with a countersunk hole 3211. The countersunk hole 3211 can reduce friction. The countersunk hole 3211 is correspondingly set with the fixing hole 3222. One end of the first locking member passes through the countersunk hole 3211 and enters the fixing hole 3222. One end of the first locking member is locked and fixed with the fixing hole 3222, thereby fixing the sliding member 322 on the fixing plate 321. The fixing method is simple and easy to operate. The other end of the first locking member is located in the countersunk hole 3211, so that the head of the first locking member is flush with or lower than the surface of the fixing plate 321, thereby achieving the effects of aesthetics, anti-scratch, or reduced interference.

[0042] More specifically, there are two fixing holes 3222, which are located on both sides of the sliding member 322, thereby improving the fixation of the connection between the sliding member 322 and the fixing plate 321.

[0043] In a specific embodiment, refer to Figure 3As shown, two sliding members 322 are provided, and the two sliding members 322 are spaced apart on both sides of the fixed plate 321. Specifically, the fixed plate 321 has a certain length and extends along the extension direction of the fixed shaft 31. The length of the fixed plate 321 is less than the length of the fixed shaft 31. Two sliding members 322 are provided, and the two sliding members 322 are spaced apart on both sides of the fixed plate 321, thereby increasing the spacing between the two sliding members 322 to improve the stability of the sliding assembly 32 during sliding, thereby improving the stability of the movable frame 2 during sliding.

[0044] In one embodiment, reference is made to Figures 3 to 4 As shown, the fixing plate 321 also has a fixing part 3212, which protrudes outward from the edge of the fixing plate 321 and is fixedly connected to the movable frame 2. Specifically, the fixing plate 321 also has a fixing part 3212, which is used to fixally connect to the movable frame 2. The fixing part 3212 is located at the edge of the fixing plate 321 and protrudes horizontally outward from one side edge of the fixing plate 321. The fixing part 3212 is fixedly connected to the movable frame 2, thereby improving the stability of the fixing plate 321 and the movable frame 2.

[0045] More specifically, multiple fixing parts 3212 are provided, and the multiple fixing parts 3212 are respectively provided on both sides of the fixing plate 321. The fixing parts 3212 located on both sides of the fixing plate 321 are symmetrically arranged, so that both sides of the fixing plate 321 can be fixedly connected to the movable frame 2, thereby improving the fixation of the fixing plate 321 and the movable frame 2.

[0046] More specifically, a plurality of the fixing parts 3212 are provided in the middle and on one side of the fixing plate 321 to improve the stability of the fixing plate 321 and the movable frame 2.

[0047] In a specific embodiment, refer to Figure 1b , Figure 2b and Figure 4As shown, the fixing part 3212 is provided with a mounting hole 32121, and the movable frame 2 is provided with a locking hole. The locking hole is correspondingly provided with the mounting hole 32121. One end of the second locking member passes through the mounting hole 32121 and is locked and fixed with the locking hole. Specifically, the fixing part 3212 and the movable frame 2 are fixedly connected by the second locking member. The fixing part 3212 is provided with a mounting hole 32121 that passes through both sides of it. The movable frame 2 is provided with a locking hole, which is correspondingly provided with the mounting hole 32121. One end of the second locking member passes through the mounting hole 32121 and is locked and fixed with the locking hole, thereby realizing the fixed connection between the fixing plate 321 and the movable frame 2. The fixing method is simple and the installation cost is low.

[0048] In one embodiment, reference is made to Figure 1b , Figures 2b to 4 As shown, the fixed shaft 31 has mounting portions 311 at both ends, which extend along both sides of the fixed shaft 31 and are fixedly connected to the fixing frame 1. Specifically, the fixed shaft 31 is fixedly connected to the fixing frame 1, and the fixed shaft 31 extends along the width direction of the fixing frame 1. The two ends of the fixed shaft 31 have mounting portions 311, which extend along opposite sides of the fixed shaft 31 to the left and right sides of the fixed shaft 31. That is, the two mounting portions 311 and the fixed shaft 31 form an "I" shape, which fixes the mounting portions 311 to the fixing frame 1, thereby increasing the fixing area of ​​the fixed shaft 31 and the fixing frame 1, improving the stability of the fixing of the fixed shaft 31 and the fixing frame 1, and facilitating installation or disassembly operations.

[0049] More specifically, the mounting part 311 and the fixing bracket 1 are fixedly connected by screws, which is simple to operate.

[0050] In a specific embodiment, the sliding element 322 is a plastic slider or a linear bearing; and / or, the fixed shaft 31 is an optical shaft (not shown in the figure). Specifically, the sliding element 322 is slidably connected to the fixed shaft 31. To further reduce the frictional resistance of the guide rail structure, the sliding element 322 is set as a plastic slider or a linear bearing. The plastic slider is usually made of engineering plastic material with excellent self-lubricating properties, such as polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene (UHMWPE), or nylon composite material with added lubricants such as graphite and molybdenum disulfide. These materials have extremely low coefficients of friction, which can effectively reduce the sliding friction between them and the fixed shaft 31. At the same time, plastic materials have good chemical stability and wear resistance, can adapt to complex environments such as humidity and acid and alkali, and have low processing costs. In addition, some plastic sliders can also improve their load-bearing capacity and deformation resistance while maintaining low friction characteristics by embedding a metal skeleton or adding fiber reinforcement materials.

[0051] Linear bearings are a more precise type of sliding component 322, and are divided into rolling and sliding types. Rolling linear bearings contain balls or rollers, replacing sliding friction with rolling friction. Their coefficient of friction can be as low as 0.001-0.002, greatly reducing motion resistance. The even distribution of the rolling elements ensures smooth and consistent motion. Simultaneously, the sealing structure effectively prevents dust and debris from entering, extending service life. Sliding linear bearings use bushings made of self-lubricating materials, such as oil-impregnated powder metallurgy or self-lubricating plastics. They also possess low-friction characteristics and have a simpler structure and lower cost.

[0052] Therefore, the slider 322 is set as a plastic slider or a linear bearing, thereby reducing the frictional resistance between the slider 322 and the fixed shaft 31, and further improving the smoothness of sliding between the slider 322 and the fixed shaft 31, so as to realize unilateral push and pull.

[0053] The fixed shaft 31 is an optical shaft, that is, the fixed shaft 31 uses a cylindrical metal shaft with a precision-machined surface as a fixed support component. The optical shaft has low frictional resistance, which enables the sliding member 322 to slide smoothly and steadily. Moreover, the installation method of the optical shaft is simple and quick.

[0054] In one embodiment, reference is made to Figure 2aAs shown, the fixed frame 1 is provided with a plurality of spaced mounting grooves 11, the mounting grooves 11 being formed by an inward recess from one side of the fixed frame 1, and the movable frame 2 is provided with a plurality of spaced protrusions 21, the protrusions 21 being adapted to and embedded in the mounting grooves 11. Specifically, the fixed frame 1 and the movable frame 2 are embedded and connected, that is, the top ends of the fixed frame 1 and the movable frame 2 are at the same horizontal position. The fixed frame 1 is provided with a mounting groove 11, which is formed by a recess inward from one side of the fixed frame 1. There are multiple mounting grooves 11, and the multiple mounting grooves 11 are spaced apart along the length direction of the fixed frame 1. In this embodiment, the mounting groove 11 is a "U" shaped structure. The movable frame 2 is provided with multiple spaced protrusions 21, which are protruded from one side of the movable frame 2 toward the fixed frame 1. The multiple protrusions 21 are spaced apart along the length direction of the movable frame 2, and the protrusions 21 are adapted to the mounting grooves 11, that is, the protrusions 21 can be embedded in the mounting grooves 11. When the movable frame 2 is pushed or pulled, the protrusions 21 slide in the mounting grooves 11 so that the top ends of the fixed frame 1 and the movable frame 2 are at the same horizontal plane, thereby improving the integration and stability of the guide rail structure.

[0055] In a specific embodiment, refer to Figure 1b , Figure 2b As shown, the movable frame 2 is also provided with a first fixed section 22 and a second fixed section 23 that are fixedly connected to the sliding component 32. The first fixed section 22 is fixedly connected to two adjacent protrusions 21, and the two ends of the second fixed section 23 are respectively fixed to both sides of the movable frame 2 along the length direction of the movable frame 2. Specifically, the movable frame 2 is further provided with a first fixed section 22 and a second fixed section 23. Both the first fixed section 22 and the second fixed section 23 are fixedly connected to the sliding component 32. The two ends of the first fixed section 22 are respectively fixedly connected to two adjacent protrusions 21, thereby improving the structural stability of the movable frame 2. The first fixed section 22 extends along the length direction of the movable frame 2. The two ends of the second fixed section 23 are respectively connected to the two sides of the movable frame 2, and the second fixed section 23 extends along the length direction of the movable frame 2, that is, the second fixed section 23 extends from one side of the movable frame 2 to the other side and is fixedly connected to the movable frame 2, thereby improving the structural stability of the movable frame 2. The sliding component 32 is fixedly connected to the first fixed section 22 and the second fixed section 23, thereby improving the stability of the fixation between the sliding component 32 and the movable frame 2.

[0056] More specifically, the plurality of fixing parts 3212 of the fixing plate 321 are respectively fixedly connected to the first fixing segment 22 and the second fixing segment 23.

[0057] In one embodiment, reference is made to Figure 1b , Figure 2b As shown, a limiting section 12 is provided on one side of the fixed frame 1. The limiting section 12 extends along the length direction of the fixed frame 1, and one end of the fixed shaft 31 is fixedly connected to the limiting section 12. When the movable frame 2 slides to its outermost position, the second fixed section 23 abuts against the limiting section 12. Specifically, a limiting section 12 is provided on one side of the fixed frame 1. The limiting section 12 is used to fix the fixed shaft 31 and limit the sliding range of the movable frame 2. The limiting section 12 extends along the length direction of the fixed frame 1, and one end of the fixed shaft 31 is fixedly connected to the limiting section 12, that is, the end of the fixed shaft 31 is fixedly connected to the limiting section 12. When the movable frame 2 is pulled, when the second fixed section 23 abuts against the limiting section 12, the movable frame 2 no longer slides. This is the maximum pulling distance of the movable frame 2, thereby improving the structural stability of the guide rail structure.

[0058] More specifically, refer to Figure 2b As shown, the movable frame 2 includes a body 24 and a sliding leg 25. The sliding leg 25 is perpendicular to the body 24 and faces the ground, and is slidably connected to the ground. This further increases the smoothness of the sliding of the movable frame 2, making it more effortless and further enabling unilateral push-pull operation.

[0059] Meanwhile, the end of the sliding leg 25 that contacts the ground is provided with a sliding wheel, which allows it to slide on the ground.

[0060] Reference Figures 1a to 2b As shown, this application also provides a sofa bed, which includes the guide rail structure. The guide rail structure is any of the guide rail structures described above. Since the guide rail structure has been described in detail in the above embodiments, it will not be described again here.

[0061] Specifically, the sofa bed includes the guide rail structure. The guide rail structure has low frictional resistance, so when the sofa bed is pushed and pulled, the required pushing and pulling force is small, the operation is simple and smooth, and the phenomenon of jamming or getting stuck is avoided. This allows users to easily push and pull the sofa bed on one side, so as to realize the transformation of the sofa bed between sofa form and bed form, thereby improving the user experience.

[0062] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A guide rail structure, characterized by, include: A fixed frame and a movable frame, wherein the fixed frame and the movable frame are slidably connected; A guide rail device includes a fixed shaft and a sliding assembly. The fixed shaft is fixedly mounted on the fixed frame along the width direction of the fixed frame. The sliding assembly is sleeved on the outside of the fixed shaft and slidably connected to the fixed shaft. The sliding assembly is also fixedly connected to the movable frame. When the movable frame is pushed or pulled, the sliding component slides along the fixed axis so that the movable frame slides relative to the fixed frame.

2. The guide rail structure according to claim 1, characterized by The sliding assembly includes a fixed plate and a sliding member. The fixed plate is fixedly connected to the movable frame, and the sliding member is fixedly connected to the fixed plate and slidably connected to the fixed shaft.

3. The guide rail structure according to claim 2, characterized in that, The sliding member is provided with through holes on both sides, and one end of the fixed shaft passes horizontally through the through holes and is slidably connected to the sliding member.

4. The guide rail structure according to claim 2, characterized by The sliding member is also provided with a fixing hole, and the fixing plate is provided with a countersunk hole. The countersunk hole is correspondingly provided with the fixing hole, and one end of the first locking member passes through the countersunk hole and is fixed with the fixing hole.

5. The rail structure of claim 2, wherein, The sliding member is provided in two parts, and the two sliding members are spaced apart on both sides of the fixed plate.

6. The rail structure of claim 2, wherein, The fixing plate is also provided with a fixing part, which is provided by protruding outward from the edge of the fixing plate, and the fixing part is fixedly connected to the movable frame.

7. The guide rail structure according to claim 6, characterized by The fixing part is provided with a mounting hole, and the movable frame is provided with a locking hole. The locking hole is provided in correspondence with the mounting hole, and one end of the second locking member passes through the mounting hole and is locked and fixed with the locking hole.

8. The guide rail structure according to claim 1, characterized by The fixed shaft has mounting portions at both ends, which extend along both sides of the fixed shaft and are fixedly connected to the fixed frame.

9. Rail structure according to any of claims 2-7, characterized in that The sliding element is a plastic slider or a linear bearing; and / or, the fixed shaft is an optical shaft.

10. The guide rail structure according to claim 1, characterized by The fixed frame has multiple spaced mounting slots, which are formed by an inward recess from one side of the fixed frame. The movable frame has multiple spaced protrusions, which are adapted to and embedded in the mounting slots.

11. The guide rail structure according to claim 10, characterized by The movable frame is further provided with a first fixed section and a second fixed section, both of which are fixedly connected to the sliding component. The first fixed section is fixedly connected to two adjacent protrusions, and the two ends of the second fixed section are respectively fixed to both sides of the movable frame along the length direction of the movable frame.

12. The guide rail structure according to claim 11, characterized in that, A limiting section is provided on one side of the fixed frame, and the limiting section extends along the length direction of the fixed frame. One end of the fixed shaft is fixedly connected to the limiting section. When the movable frame slides to the outermost position, the second fixed section abuts against the limiting section.

13. A sofa bed, characterized in that include: A guide rail structure, wherein the guide rail structure is any one of claims 1-12.

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