A telescopic sofa frame
By designing guide bolts and a sliding block structure, the problem of easy deformation of the guide rails in traditional telescopic sofa frames is solved, resulting in a more stable and durable telescopic frame structure, which improves the service life and comfort of the sofa.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LIJING HOME FURNISHING CO LTD
- Filing Date
- 2025-10-21
- Publication Date
- 2026-07-24
AI Technical Summary
The guide rails of traditional telescopic sofa frames are prone to deformation due to stress after being pulled out, which affects their service life and smoothness.
The design employs a guide bolt and slide block structure. The head of the guide bolt slides within the guide groove, while the slide block is supported on the support wheel on the bracket. Combined with the inclined upper shelf and guide groove design, this improves stability and service life.
It enhances the stability and lifespan of the telescopic frame, prevents it from tilting up, and improves the overall stability and comfort of the sofa.
Smart Images
Figure CN224539814U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sofa frame technology, specifically a telescopic sofa frame. Background Technology
[0002] Sofa frames are home furnishings primarily made of particleboard. As an important component of a sofa, their frames can be made of materials such as multi-layer solid wood, plywood, or metal. Telescopic sofa frames are generally made of wood, ensuring both structural strength and ease of movement.
[0003] Traditional telescopic sofa frames typically use linear guide rails with limiters. When the frame is extended, the force applied to the telescopic frame may cause deformation of the limiter portion of the guide rail, thus affecting its lifespan and smoothness. Therefore, an improved technology is urgently needed to solve this problem in the existing technology. Summary of the Invention
[0004] The purpose of this utility model is to provide a telescopic sofa frame to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a telescopic sofa frame, comprising a sofa frame body and a telescopic frame; The main body of the sofa frame includes side panels, first connecting plates, and connecting frames. There are two side panels that are parallel to each other. The bottoms of the two side panels are connected by several first connecting plates, and the tops of the two side panels are connected by a connecting frame. Each side panel is composed of a lower plate, a longitudinal plate, and an upper plate. The rear side of the lower plate is connected to the rear side of the upper plate through the longitudinal plate. The lower plate, the longitudinal plate, and the upper plate form a concave structure. The lower plate has a guide groove in the horizontal direction. A side support plate is provided inside the lower plate and below the guide groove. A bracket is provided on the upper surface of the side support plate. A groove is provided on the upper surface of the bracket. Several support wheels are provided on the upper surface of the bracket and within the groove. The telescopic frame includes an upper frame, a lower frame, a longitudinal connecting frame, and a second connecting plate. The upper frame is positioned above the lower frame. The inner ends of the upper and lower frames are connected by the second connecting plate, and the outer ends are connected by the longitudinal connecting frame. Several guide bolts are provided on both sides of the lower frame. The heads of the guide bolts are slidably disposed in guide grooves. The heads of the guide bolts are circular and have internal hexagonal grooves. The diameter of the guide bolt heads is the same as the height of the guide grooves. A slide is provided on the lower surface of the lower frame. The slide is movably disposed in a groove on the upper surface of the bracket and supported on a support wheel.
[0006] Preferably, in the telescopic sofa frame provided by this utility model, a support leg is provided on the lower surface of the first connecting plate, and the horizontal height of the bottom of the support leg is higher than the horizontal height of the bottom of the longitudinal connecting frame.
[0007] Preferably, in the telescopic sofa frame provided by this utility model, the outer edge of the upper panel is a bevel, and the outer end of the connecting frame is a bevel.
[0008] Preferably, the telescopic sofa frame provided by this utility model has an upper shelf that is angled and whose height gradually decreases from the end near the longitudinal connecting frame to the end away from the longitudinal connecting frame.
[0009] Preferably, in the telescopic sofa frame provided by this utility model, embedded parts are provided on both sides of the upper frame, and the guide bolts are fastened to the embedded parts.
[0010] Preferably, the telescopic sofa frame provided by this utility model includes several cushion support plates on the upper surface of the upper frame.
[0011] Compared with the prior art, the beneficial effects of this utility model are: The lower surface of the telescopic frame is equipped with a slide, which mates with the groove of the bracket and is supported on the support wheels on the upper surface of the bracket. At the same time, the lower plate of the side panel has guide grooves in the horizontal direction, and several guide bolts are provided on both sides of the upper frame. The heads of the guide bolts are movably set in the guide grooves of the lower plate. During the movement of the telescopic frame, the stability of the telescopic frame is greatly improved, and the installation is simple. Compared with the traditional guide rail structure with limit, the service life of the bracket and slide is greatly improved. At the same time, it can prevent the telescopic frame from tilting when sitting on the sofa, further improving the stability of the entire sofa. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view cross-sectional diagram of the present invention (telescopic frame in retracted state). Figure 3 This is a side view cross-sectional diagram of the present invention (telescopic frame extended state). Figure 4 This is a schematic diagram of the side panel structure; Figure 5 This is a schematic diagram of the telescopic frame structure; Figure 6 This is a front view cross-sectional structural diagram of the present invention; Figure 7 This is a schematic diagram of the guide bolt structure; Figure 8 This is a schematic diagram showing the state of the present invention when the seat cushion, leg cushion, and backrest are externally wrapped.
[0013] In the diagram: Side plate 1, First connecting plate 2, Connecting frame 3, Side support plate 4, Bracket 5, Groove 6, Support wheel 7, Telescopic frame 8, Guide bolt 9, Slide seat 10, Support leg 11, Embedded part 12, Lower plate 101, Longitudinal plate 102, Upper plate 103, Guide groove 104, Upper shelf 801, Lower shelf 802, Longitudinal connecting frame 803, Second connecting plate 804, Seat cushion support plate 805, Head 901. Detailed Implementation
[0014] The technical solution of this 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 this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0015] Please see Figure 1-7 This utility model provides a technical solution: a telescopic sofa frame, including a sofa frame body and a telescopic frame 8; The main body of the sofa frame includes side panels 1, first connecting plates 2, and connecting frames 3. There are two side panels 1 that are parallel to each other. The bottoms of the two side panels 1 are connected by several first connecting plates 2, and the tops of the two side panels 1 are connected by connecting frames 3. The side panels 1 are composed of a lower plate 101, a longitudinal plate 102, and an upper plate 103. Figure 4As shown, the rear side of the lower plate 101 is connected to the rear side of the upper plate 103 through the longitudinal plate 102. The lower plate 101, the longitudinal plate 102 and the upper plate 103 form a concave structure. The lower plate 101 has a guide groove 104 in the horizontal direction. The outer edge of the upper plate 103 is a bevel, and the outer end of the connecting frame 3 is a bevel to ensure that the sofa back is a bevel, which conforms to the ergonomics of a ladder. A side support plate 4 is provided on the inner side of the lower plate 101 and below the guide groove 104. A bracket 5 is provided on the upper surface of the side support plate 4. A groove 6 is provided on the upper surface of the bracket 5. Several support wheels 7 are provided on the upper surface of the bracket 5 and in the groove 6. A support leg 11 is provided on the lower surface of the first connecting plate 2. The support leg 11 is used to raise and support the sofa frame. The horizontal height of the bottom of the support leg 11 is higher than the horizontal height of the bottom of the longitudinal connecting frame 803 to avoid the longitudinal connecting frame 803 at the front end of the telescopic frame 8 from rubbing against the ground. like Figure 5 As shown, the telescopic frame 8 includes an upper frame 801, a lower frame 802, a longitudinal connecting frame 803, and a second connecting plate 804. The upper frame 801 is positioned above the lower frame 802. The inner ends of the upper frame 801 and the lower frame 802 are connected by the second connecting plate 804, and the outer ends of the upper frame 801 and the lower frame 802 are connected by the longitudinal connecting frame 803. Several guide bolts 9 are provided on both sides of the lower frame. The heads 901 of the guide bolts 9 are slidably disposed in the guide grooves 104. The heads 901 of the guide bolts 9 are circular and have internal hexagonal grooves. The diameter of the heads 901 of the guide bolts 9 is the same as that of the guide grooves 104. The grooves 104 are at a uniform height. The upper shelf 801 has embedded parts 12 on both sides. The guide bolts 9 are fastened to the embedded parts 12. The lower shelf 802 has a slide 10 on its lower surface. The slide 10 is movably set in the groove 6 on the upper surface of the bracket 5 and supported on the support wheel 7. The upper shelf 801 is set at an angle. The height of the upper shelf 801 gradually decreases from the end near the longitudinal connecting frame 803 to the end away from the longitudinal connecting frame 803, so that the sitting posture is more ergonomic and the comfort is improved. The upper surface of the upper shelf 801 is also provided with several seat cushion support plates 805 to facilitate the installation of the seat cushion plates.
[0016] Installation method and operating principle: First, connect the two side panels 1 to each other via the first connecting plate 2 and the connecting frame 3. Connect the upper frame 801 and the lower frame 802 to each other via the longitudinal connecting frame 803 and the second connecting plate 804 to form the main body of the sofa frame. Install the slide 10 on the lower surface of the lower frame 802 with bolts, and install the bracket 5 on the upper surface of the side support plate 4 with bolts. The upper surface of the bracket 5 is provided with several support wheels 7. Connect the upper frame 801 and the lower frame 802 via the longitudinal connecting frame 803 and the second connecting plate 804, and then install multiple seat cushion support plates 805 on the upper surface of the upper frame 801 to form the telescopic frame 8. The lifting frame mates with the main body of the sofa frame, and the lower part of the slide 10 is movable in the groove 6 of the bracket 5. The bottom of the slide 10 is supported on the support wheel 7. Then, the guide bolt 9 is passed through the guide groove 104 of the lower plate 101 and fastened to the embedded part 12 on the side of the upper frame 801. At this time, the head 901 of the guide bolt 9 is movably set in the guide groove 104, completing the assembly. Before use, the seat cushion is installed on the upper surface of the upper frame 801. The front end of the seat cushion is hinged to the flip plate, which is located at the longitudinal connecting frame 803. The inner side of the flip plate is connected to the piston rod of the electric cylinder, and the electric cylinder is connected to the lower frame 802. The seat cushion is placed on the seat cushion, the flip plate is covered with a soft cushion, the backrest is placed on the lumbar support frame, and the side plate 1 is also covered with a soft cushion. If there are armrests, the armrest frame also needs to be connected. Figure 8 As shown. When the telescopic frame 8 is pulled out (it can be manually or by using an electric cylinder to push it out), the slide 10 slides along the groove 6 of the bracket 5 and is supported on the support wheel 7. The head 901 of the guide bolt 9 moves along the corresponding guide groove 104. This utility model has a reasonable structure. The lower surface of the lower frame 802 of the telescopic frame 8 is provided with a slide 10. The slide 10 cooperates with the groove 6 of the bracket 5 and is supported on the support wheel 7 on the upper surface of the bracket 5. At the same time, the lower plate 101 of the side plate 1 has a guide groove 104 in the horizontal direction. Several guide bolts 9 are provided on both sides of the upper frame 801. The head 901 of the guide bolt 9 is movably set in the guide groove 104 of the lower plate. During the movement of the telescopic frame 8, the stability of the telescopic frame 8 is greatly improved. It is also easy to install. Compared with the traditional guide rail structure with limit position, the service life of the bracket 5 and the slide 10 is greatly improved. At the same time, it can prevent the telescopic frame 8 from tilting when sitting on the sofa, further improving the stability of the entire sofa.
[0017] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.
[0018] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A telescopic sofa frame, characterized in that: Includes the main body of the sofa frame and the telescopic frame (8); The main body of the sofa frame includes side panels (1), first connecting plates (2), and connecting frames (3). There are two side panels (1) that are parallel to each other. The bottoms of the two side panels (1) are connected by several first connecting plates (2), and the tops of the two side panels (1) are connected by connecting frames (3). The side panel (1) is composed of a lower plate (101), a longitudinal plate (102), and an upper plate (103). The rear side of the lower plate (101) is connected to the rear side of the upper plate (103) through the longitudinal plate (102). The lower plate (101), the longitudinal plate (102) and the upper plate (103) form a concave structure. The lower plate (101) has a guide groove (104) in the horizontal direction. A side support plate (4) is provided on the inner side of the lower plate (101) and below the guide groove (104). A bracket (5) is provided on the upper surface of the side support plate (4). A groove (6) is provided on the upper surface of the bracket (5). Several support wheels (7) are provided on the upper surface of the bracket (5) and in the groove (6). The telescopic frame (8) includes an upper frame (801), a lower frame (802), a longitudinal connecting frame (803), and a second connecting plate (804). The upper frame (801) is located above the lower frame (802). The inner ends of the upper frame (801) and the lower frame (802) are connected by the second connecting plate (804). The outer ends of the upper frame (801) and the lower frame (802) are connected by the longitudinal connecting frame (803). Several connecting plates are provided on both sides of the lower frame (802). A guide bolt (9) is provided, the head (901) of which is slidably disposed in the guide groove (104). The head (901) of the guide bolt (9) is circular and has an internal hexagonal groove. The diameter of the head (901) of the guide bolt (9) is the same as the height of the guide groove (104). A slide (10) is provided on the lower surface of the lower shelf (802). The slide (10) is movably disposed in the groove (6) on the upper surface of the bracket (5) and supported on the support wheel (7).
2. The telescopic sofa frame according to claim 1, characterized in that: The lower surface of the first connecting plate (2) is provided with a support leg (11), and the horizontal height of the bottom of the support leg (11) is higher than the horizontal height of the bottom of the longitudinal connecting frame (803).
3. A telescopic sofa frame according to claim 1, characterized in that: The outer edge of the upper plate (103) is a bevel, and the outer end of the connecting frame (3) is a bevel.
4. A telescopic sofa frame according to claim 1, characterized in that: The upper shelf (801) is arranged at an angle, and the height of the upper shelf (801) gradually decreases from the end near the longitudinal connecting frame (803) to the end away from the longitudinal connecting frame (803).
5. A telescopic sofa frame according to claim 1, characterized in that: Both sides of the upper frame (801) are provided with embedded parts (12), and the guide bolts (9) are fastened to the embedded parts (12).
6. A telescopic sofa frame according to claim 1, characterized in that: The upper surface of the upper shelf (801) is also provided with several cushion support plates (805).