Modular sofa with adjustable length

By designing a modular sofa with adjustable length, the problem of traditional sofas being unable to be dynamically adjusted is solved, achieving flexible space utilization and multi-functional use, while reducing usage costs.

CN224557156UActive Publication Date: 2026-07-28DONGGUAN HAOMEIJIA SMART OUTDOOR PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN HAOMEIJIA SMART OUTDOOR PROD CO LTD
Filing Date
2025-08-25
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

Traditional sofas have a fixed length and cannot be dynamically adjusted according to the number of users or the size of the space, resulting in low space utilization and limited functionality, making it difficult to meet diverse needs.

Method used

An adjustable-length modular sofa was designed. Through the combination of connecting frame, limiting strip, fixing strip, extension plate and limiting screw, the sofa can be extended and locked to meet different space and usage needs.

Benefits of technology

The sofa can be freely extended and retracted as needed, reducing space occupation when stored and increasing sitting and lying area when unfolded, thus reducing usage costs. There is no need to purchase additional furniture, and the splicing stability is high.

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Abstract

The utility model discloses length adjustable's combined sofa belongs to sofa technical field, aims at solving the length fixed of prior art traditional sofa, cannot according to the number of users or space size dynamic adjustment, is difficult to satisfy the problem of diversification needs. Including sofa one and sofa two, be equipped with the connecting frame between sofa one and sofa two, the lateral wall fixed connection of connecting frame with sofa two, the inside of sofa one has the accommodating groove, the connecting frame slides into towards the inside of accommodating groove, the inner rim mouth department fixed mounting of accommodating groove has the limit strip, the lateral wall on the inner wall of connecting frame is installed with fixed strip and is passed into the accommodating groove, the fixed strip sliding and limit strip are pasted, the inner wall of connecting frame has the placement groove, and the extension plate is installed in the placement groove. The length adjustable's combined sofa, and the sofa can be telescopic according to the space demand, and the volume reduces under the contraction state, and it is convenient to store in the corner or narrow area.
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Description

Technical Field

[0001] This utility model belongs to the field of sofa technology, specifically relating to a modular sofa with adjustable length. Background Technology

[0002] With the diversification of modern living spaces and the upgrading of functional requirements, traditional fixed sofas have gradually revealed the following problems:

[0003] Insufficient space occupation and flexibility

[0004] Traditional sofas are mostly one-piece or fixed segmented structures, making them bulky and unable to adjust their length. In small and medium-sized apartments or temporary event scenarios, their rigid dimensions make it difficult to adapt to changes in space, resulting in low space utilization. For example, in a small living room, when a temporary activity area needs to be created, a fixed sofa cannot be retracted, becoming an obstacle to space planning.

[0005] Limited functionality and applicable scenarios

[0006] Traditional sofa designs are primarily designed for sitting and reclining, lacking modular assembly capabilities. In scenarios such as large gatherings, home theaters, or temporary rest areas, users need to add extra chairs or mattresses, increasing usage costs and storage burdens. Furthermore, the fixed length of traditional sofas cannot be dynamically adjusted according to the number of users or the size of the space, making it difficult to meet diverse needs. Utility Model Content

[0007] (1) Technical problems to be solved

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a modular sofa with adjustable length, which aims to solve the problem that the length of the traditional sofa is fixed and cannot be dynamically adjusted according to the number of users or the size of the space, making it difficult to meet diverse needs.

[0009] (2) Technical solution

[0010] To address the aforementioned technical problems, this utility model provides a length-adjustable modular sofa, comprising a sofa first and a sofa second, with a connecting frame between them. The connecting frame is fixedly connected to the side wall of the sofa second. The sofa first has an internal receiving groove, into which the connecting frame slides. A limiting strip is fixedly installed at the inner edge of the receiving groove, and a fixing strip is installed on the side wall of the connecting frame that penetrates the inner wall of the receiving groove. The fixing strip slides and engages with the limiting strip. An extension plate is installed in the inner wall of the connecting frame, where an extension plate is installed. The sofa can freely extend and retract according to space requirements, reducing its volume when retracted, making it easy to store in corners or narrow areas.

[0011] Optionally, the extension plate is a foldable plate structure.

[0012] Optionally, the upper surface of the connecting frame is provided with vertical connecting holes, which are spaced apart.

[0013] Optionally, a connecting block is fixed on the outer wall of the connecting frame near the fixing strip, and a limit hole is provided on the connecting block.

[0014] Optionally, a limiting screw is installed on the upper surface of the first sofa near the second sofa, and the limiting screw is adapted to the limiting hole and the connecting hole.

[0015] Optionally, the limiting strip is provided with a sliding hole, and the bottom end face of the connecting frame is provided with a sliding block, which is adapted to slide and install with the sliding hole.

[0016] Optionally, the upper surface of the sofa is recessed to form a rotating groove, and the top of the limiting screw is embedded in the rotating groove.

[0017] (3) Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are as follows: the sofa can be freely extended and retracted according to space requirements. In its retracted state, its volume is reduced, making it easy to store in corners or narrow areas; when extended, its length increases to meet the needs of multiple people sitting or lying down. After extending the extension panel, the sofa can instantly transform into a children's play area or a temporary office area, eliminating the need for additional furniture and reducing usage costs. The limiting strip, fixing strip, and sliding block form a three-dimensional guide to prevent the connecting frame from shifting; the mechanical locking of the limiting screw and the connecting hole and limiting hole ensures the load-bearing capacity at the joint, far exceeding daily usage needs. The limiting screw is hidden in the rotating groove to prevent accidental retraction of the sofa due to children or pets. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the sofa in its unfolded state.

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of a sofa;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting frame.

[0024] The labels in the attached diagram are as follows: 1. Sofa 1; 2. Sofa 2; 3. Connecting frame; 4. Connecting hole; 5. Limiting screw; 6. Rotating groove; 7. Extension plate; 9. Receiving groove; 10. Limiting strip; 11. Sliding hole; 12. Limiting hole; 13. Connecting block; 14. Placement groove; 15. Lowering slider; 16. Fixing strip. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art can also use other alternative methods to implement the invention. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0026] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.

[0027] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0028] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0029] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0030] 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.

[0031] This specific embodiment is a modular sofa with adjustable length, and its structural diagram is shown below. Figure 1 , Figure 2 As shown, the sofa includes a sofa 1 and a sofa 2. A connecting frame 3 is provided between the sofa 1 and the sofa 2. The connecting frame 3 is fixedly connected to the side wall of the sofa 2. The interior of the sofa 1 has a receiving groove 9. The connecting frame 3 slides into the receiving groove 9.

[0032] Reference Figure 3 , Figure 4 A limiting strip 10 is fixedly installed at the inner edge of the receiving groove 9. A fixing strip 16 is installed on the side wall of the connecting frame 3 that penetrates the inner wall of the receiving groove 9. The fixing strip 16 slides and fits against the limiting strip 10. The inner wall of the connecting frame 3 has a placement groove 14, and an extension plate 7 is installed in the placement groove 14. The extension plate 7 is a foldable plate structure. The upper surface of the connecting frame 3 has vertically opened connecting holes 4, which are spaced apart. A connecting block 13 is fixed on the outer wall of the connecting frame 3 near the fixing strip 16. The connecting block 13 has a limiting hole 12. A limiting screw 5 is installed on the upper surface of sofa 1 near sofa 2. The limiting screw 5 is adapted to the limiting hole 12 and the connecting hole 4. A sliding hole 11 is opened on the limiting strip 10. A sliding block 15 protrudes from the bottom end face of the connecting frame 3. The sliding block 15 is adapted to the sliding hole 11 and is slidably installed. The upper surface of the sofa 1 has a recessed rotating groove 6, and the top of the limiting screw 5 is embedded in the rotating groove 6.

[0033] Working principle: Sofa 1 and Sofa 2 are joined together by connecting frame 3. Connecting frame 3 is fixed to the side wall of Sofa 2, and its other end slides into the receiving groove 9 inside Sofa 1.

[0034] The limiting strip 10 at the inner edge of the receiving groove 9 slides against the fixing strip 16 on the side wall of the connecting frame 3 to form a lateral guide. At the same time, the sliding hole 11 on the limiting strip 10 is adapted to the sliding block 15 at the bottom of the connecting frame 3 to prevent the connecting frame 3 from detaching.

[0035] When the sofa is adjusted to the target length, rotate the limiting screw 5 on the upper surface of the sofa 1 so that it passes through the connecting hole 4 of the connecting frame 3 or the limiting hole 12 of the connecting block 13 in sequence. Mechanical locking is achieved through threaded fastening to ensure stability during use.

[0036] A foldable extension plate 7 is installed in the placement groove 14 on the inner wall of the connecting frame 3. When it is necessary to expand the sitting or lying area, the extension plate 7 is unfolded and fixed to the edge of the connecting frame 3 to form a continuous support surface; when storing, the extension plate 7 is folded and pushed into the placement groove 14 to reduce space occupation.

[0037] The top of the limiting screw 5 is embedded in the rotating groove 6 of the sofa 1 to prevent exposed parts from being bumped; the user only needs to rotate the screw to lock / unlock, which is simple to operate and ergonomic.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular sofa with adjustable length, comprising sofa one (1) and sofa two (2), characterized in that, A connecting frame (3) is provided between the sofa one (1) and the sofa two (2). The connecting frame (3) is fixedly connected to the side wall of the sofa two (2). The interior of the sofa one (1) has a receiving groove (9). The connecting frame (3) slides into the receiving groove (9). A limiting strip (10) is fixedly installed at the inner edge of the receiving groove (9), and a fixing strip (16) is installed on the side wall of the connecting frame (3) that penetrates the inner wall of the receiving groove (9). The fixing strip (16) slides and fits against the limiting strip (10). The inner wall of the connecting frame (3) has a placement groove (14), and an extension plate (7) is installed in the placement groove (14).

2. The adjustable-length modular sofa according to claim 1, characterized in that, The extension plate (7) is a foldable plate structure.

3. The adjustable-length modular sofa according to claim 2, characterized in that, The upper surface of the connecting frame (3) is provided with vertical connecting holes (4), and the connecting holes (4) are distributed at intervals.

4. The adjustable-length modular sofa according to claim 3, characterized in that, A connecting block (13) is fixed on the outer wall of the connecting frame (3) near the fixing strip (16), and a limit hole (12) is provided on the connecting block (13).

5. The adjustable-length modular sofa according to claim 4, characterized in that, A limiting screw (5) is installed on the upper surface of the sofa one (1) near the sofa two (2), and the limiting screw (5) is adapted to the limiting hole (12) and the connecting hole (4).

6. The adjustable-length modular sofa according to claim 1, characterized in that, The limiting strip (10) has a sliding hole (11), and the bottom end face of the connecting frame (3) has a protruding sliding block (15). The sliding block (15) is adapted to slide and install with the sliding hole (11).

7. The adjustable-length modular sofa according to claim 5, characterized in that, The upper surface of the sofa (1) is recessed to form a rotating groove (6), and the top of the limiting screw (5) is embedded in the rotating groove (6).