A backrest-adjustable sofa

Abstract

The utility model relates to the technical field of sofa, concretely relates to an adjustable sofa with backrest capable of sliding forward and backward, which comprises supporting legs, a mounting frame and armrest blocks, the mounting frame is provided with supporting legs for support at the four corners of the bottom of the frame body, and the top of the mounting frame is symmetrically provided with armrest blocks on both sides; it also comprises seat cushion blocks, a sliding frame and a cushion cover, the mounting frame is assembled with seat cushion blocks side by side at the top, a sliding groove is formed at the rear side of the top of the mounting frame, the sliding frame is vertically and upwardly installed in the sliding groove of the mounting frame, and the bottom of the sliding frame is provided with pulleys. Through the up-and-down sliding of the sliding frame in the sliding groove of the mounting frame, the elastic clamping structure of the inserted rod and the clamping groove is matched, the user can easily realize the free adjustment and multi-gear fixation of the position of the backrest, the individual needs of users with different body types and sitting habits are met, and the comfort and use experience are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of sofa technology, specifically to an adjustable sofa with a backrest that can slide back and forth. Background Technology

[0002] As people's living standards improve and their demands for home comfort continue to rise, sofas are no longer limited to their traditional function of sitting and resting. Their ergonomic design and multi-functional adjustability are receiving increasing attention. Especially in scenarios such as home theaters, relaxation, and home care for the elderly, users' personalized needs for adjusting the backrest angle, seat depth, and overall support of sofas are becoming increasingly prominent.

[0003] While some existing sofa structures feature adjustable backrests, they still have several shortcomings. First, most traditional adjustment mechanisms rely on complex linkage and latch systems, making operation cumbersome and requiring users to exert considerable force to switch positions, which is particularly unfriendly to the elderly or those with limited physical strength. Second, current designs often mechanically link the backrest sliding and reclining functions, limiting the degree of freedom of adjustment and preventing independent, precise control of the backrest's forward / backward position and tilt angle, thus affecting ergonomic flexibility. Furthermore, the adjustment mechanisms are mostly built into the sofa, occupying significant space and resulting in a bulky overall structure, which is detrimental to the modern pursuit of slim and modular designs in home furnishings. Therefore, it is necessary to design an adjustable sofa with a backrest that can slide forward and backward, addressing the shortcomings of existing sofa technology. Utility Model Content

[0004] To overcome the shortcomings of the prior art, an adjustable sofa with a backrest that can slide forward and backward is provided.

[0005] The technical solution of this utility model is: an adjustable sofa with a backrest that can slide back and forth, including legs, a mounting frame, and armrest blocks. The mounting frame is the load-bearing base of the sofa. Support legs are fixedly installed at the four corners of the bottom of the mounting frame. Armrest blocks are symmetrically arranged on both sides of the top of the mounting frame. It also includes seat cushions, a sliding frame, and a backrest cover. Seat cushions are mounted side by side on the top of the mounting frame. A sliding groove is opened on the rear side of the top of the mounting frame. A sliding frame is vertically and slidably installed in the sliding groove of the mounting frame. A through groove adapted to the sliding frame is opened inside the seat cushion. A pulley is installed at the bottom of the sliding frame. The pulley and the sliding groove of the mounting frame are in rolling contact. Multiple slots are spaced apart at the bottom of the sliding groove of the mounting frame. A rod is slidably connected inside the sliding frame. A first elastic element is provided between the sliding frame and the rod. The rod is engaged in the slot of the mounting frame under the action of the first elastic element. A backrest cover is fitted on the upper part of the sliding frame. The backrest cover is located above the seat cushion.

[0006] Preferably, the mounting frame is a modular splicing design, and the mounting frames can be spliced ​​side by side continuously according to actual usage requirements.

[0007] Preferably, the mounting frame has a mounting groove at the joint, and the mounting grooves of two adjacent mounting frames are slidably connected by a connecting frame, which has a locking block that fits the mounting groove.

[0008] Preferably, a retaining plate is slidably connected to the connecting frame, the retaining plate being used to slidably engage with the mounting slot on the mounting frame, and a second elastic element is provided between the connecting frame and the retaining plate.

[0009] Preferably, a limiting plate is provided at the top of the mounting frame where the seat pad is assembled, the limiting plate being used to stably limit the seat pad at the top of the mounting frame.

[0010] Preferably, the top of the cushion cover has an opening adapted to the insertion rod, and a covering cloth is provided on the top of the cushion cover at the insertion rod opening, the covering cloth being used to cover and protect the insertion rod.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model allows users to easily adjust the backrest's forward and backward position and fix it in multiple positions by sliding the sliding bracket up and down in the mounting frame groove, in conjunction with the elastic locking structure of the plug rod and the slot. This meets the personalized needs of users with different body types and sitting habits, significantly improving comfort and user experience.

[0013] 2. The installation frame of this utility model adopts a modular splicing structure, which can realize the rapid splicing of multiple units through the connecting frame, and flexibly combine them into sofas of different lengths to adapt to various house types and usage scenarios, thereby improving the product's versatility and space utilization.

[0014] 3. This utility model achieves automatic interlocking connection between the mounting frames by using a connecting frame, a card plate, and a second elastic element. No additional tools are required; the assembly can be completed simply by pressing. Installation and disassembly are convenient, the connection is firm, and the overall structure is stable and aesthetically pleasing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This diagram shows the connection relationships of components such as the support legs, mounting frame, and handrail block frame of this utility model.

[0017] Figure 3 This is a sectional view of the components of this utility model, including the slide, the first elastic element, the sliding frame, and the pulley.

[0018] Figure 4This is an exploded view of the mounting slots and connecting frames, among other components of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the connecting frame, the card plate, and the second elastic element of this utility model.

[0020] Reference numerals: 1: support leg, 2: mounting frame, 3: armrest block frame, 4: seat cushion block, 5: sliding groove, 6: sliding frame, 7: pulley, 8: insert rod, 9: first elastic element, 10: slot, 11: backrest cover, 12: mounting groove, 13: connecting frame, 14: locking plate, 15: second elastic element, 16: limiting plate, 17: cover cloth. Detailed Implementation

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0022] An adjustable sofa with a backrest that can slide back and forth, such as Figures 1-5 As shown, the sofa includes legs 1, a mounting frame 2, and armrest blocks 3. The mounting frame 2 serves as the load-bearing base of the sofa. Support legs 1 are fixedly installed at the four corners of the bottom of the mounting frame 2. Armrest blocks 3 are symmetrically arranged on both sides of the top of the mounting frame 2. The sofa also includes seat cushions 4, a sliding frame 6, and backrest covers 11. Seat cushions 4 are mounted side-by-side on the top of the mounting frame 2. A sliding groove 5 is provided on the rear side of the top of the mounting frame 2. The sliding frame 6 is vertically slidably installed within the sliding groove 5 of the mounting frame 2. A through groove adapted to the sliding frame 6 is provided inside the seat cushion 4. A pulley 7 is installed at the bottom of the sliding frame 6. The pulley 7 and the sliding groove 5 of the mounting frame 2 are in rolling contact. The bottom of the slot 5 is provided with multiple slots 10 spaced apart. The sliding frame 6 is slidably connected with a rod 8. A first elastic element 9 is provided between the sliding frame 6 and the rod 8. Under the action of the first elastic element 9, the rod 8 is inserted into the slot 10 of the mounting frame 2. A cushion cover 11 is fitted on the upper part of the sliding frame 6. The cushion cover 11 is located above the seat cushion block 4. When it is necessary to slide and adjust the backrest of the sofa, the rod 8 in the sliding frame 6 is pulled upward against the elastic force of the first elastic element 9. After the rod 8 is disengaged from the slot 10 in the mounting frame 2, the cushion cover 11 on the sliding frame 6 can be slid and adjusted freely, thereby meeting the user's need for precise adjustment of the backrest position.

[0023] like Figure 2 and Figure 4As shown, the mounting frame 2 is a modular splicing design. The mounting frame 2 can be continuously spliced ​​side by side according to actual usage needs, so as to splice up sofa load-bearing bases of different lengths.

[0024] like Figure 4 As shown, the mounting frame 2 has a mounting groove 12 at the splicing point. The mounting grooves 12 of two adjacent mounting frames 2 are slidably connected by a connecting frame 13. The connecting frame 13 is provided with a locking block that fits the mounting groove 12. The connecting frame 13 is used as a connector to make the mounting frames 2 stably spliced ​​together.

[0025] like Figure 4 and Figure 5 As shown, a locking plate 14 is slidably connected to the connecting frame 13. The locking plate 14 is used to slide and engage the mounting groove 12 on the mounting frame 2. A second elastic element 15 is provided between the connecting frame 13 and the locking plate 14. When adjacent mounting frames 2 are connected through the connecting frame 13, simply place the connecting frame 13 between the two mounting frames 2 to be connected, and then press the mounting frame 2 inward against the connecting frame 13. This causes the locking plate 14 to compress the second elastic element 15 and engage with the mounting groove 12 of the mounting frame 2, thus achieving convenient splicing of the mounting frames 2.

[0026] like Figure 2 As shown, a limiting plate 16 is provided at the top of the mounting frame 2 where the seat cushion block 4 is assembled. The limiting plate 16 is used to stably limit the seat cushion block 4 at the top of the mounting frame 2, thereby improving the stability and safety of the sofa during use.

[0027] like Figure 3 As shown, the top of the cushion cover 11 has an opening adapted to the insertion rod 8. A cover cloth 17 is provided at the top of the cushion cover 11 at the opening of the insertion rod 8. The cover cloth 17 is used to cover and protect the insertion rod 8, preventing dust from entering the insertion rod 8 inside the cushion cover 11, and improving the overall aesthetics of the sofa.

[0028] When the user is seated, the sofa backrest (cushion cover 11) is stably fixed to the mounting frame 2 via the sliding bracket 6 connected below it. The pulley 7 at the bottom of the sliding bracket 6 is embedded in the sliding groove 5 at the top of the mounting frame 2, providing support and sliding guidance. At this time, the insert rod 8 inside the sliding bracket 6 extends downward under the action of the spring (first elastic element 9) and is engaged in the slot 10 at the bottom of the sliding groove 5, firmly locking the backrest in the current position to ensure stable use. When it is necessary to adjust the backrest position forward or backward, the user needs to pull the insert rod 8 upward from the opening at the top of the cushion cover 11 (usually covered by a cover cloth 17) to overcome the spring force, causing the insert rod 8 to disengage from the slot 10 and unlock. Then, keeping the insert rod 8 in the raised state, the user can freely push and pull the backrest forward and backward along the direction of the sliding groove 5. The pulley 7 at the bottom of the sliding bracket 6 makes the movement smooth and easy. When the backrest is moved to the desired position, the plug rod 8 is released. The spring will push the plug rod 8 to fall automatically. When the sliding frame 6 moves to the slot 10 corresponding to the new position, the plug rod 8 will immediately lock into the slot 10 and relock the backrest. In addition, the sofa base (mounting frame 2) adopts a modular design and can be easily spliced ​​and extended through the connecting frame 13. During operation, the connecting frame 13 is placed between two adjacent mounting frames 2 and the mounting frames 2 are pressed inward. The locking plate 14 on the connecting frame 13 will compress the internal spring (second elastic element 15) and slide. When aligned with the mounting slot 12, it will pop out under the action of the spring and lock into the slot to achieve a stable connection. Finally, the limiting plate 16 at the top of the mounting frame 2 ensures that the position of the seat cushion block 4 is fixed, improving the safety of use. The cover cloth 17 can effectively prevent dust from entering the area of ​​the plug rod 8 and maintain the aesthetic appearance.

[0029] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. An adjustable sofa with a backrest that can slide forward and backward, comprising legs (1), a mounting frame (2) and armrest blocks (3), wherein the four corners of the bottom of the mounting frame (2) are fixedly installed with legs (1) to provide support, and the top two sides of the mounting frame (2) are symmetrically provided with armrest blocks (3). Its features are, It also includes a seat cushion block (4), a sliding frame (6), and a backrest cover (11). The seat cushion block (4) is mounted side by side on the top of the mounting frame (2). A sliding groove (5) is provided on the rear side of the top of the mounting frame (2). The sliding frame (6) is vertically and slidably mounted in the sliding groove (5) of the mounting frame (2). A through groove adapted to the sliding frame (6) is provided inside the seat cushion block (4). A pulley (7) is installed at the bottom of the sliding frame (6). The pulley (7) and the sliding groove (5) of the mounting frame (2) are in rolling contact. Multiple slots (10) are provided at intervals at the bottom of the sliding groove (5) of the mounting frame (2). A plug rod (8) is slidably connected inside the sliding frame (6). A first elastic element (9) is provided between the sliding frame (6) and the plug rod (8). A backrest cover (11) is fitted on the upper part of the sliding frame (6). The backrest cover (11) is located above the seat cushion block (4).

2. The adjustable sofa with a backrest that can slide forward and backward as described in claim 1, characterized in that, The mounting frame (2) is a modular splicing design.

3. The adjustable sofa with a backrest that can slide forward and backward as described in claim 2, characterized in that, The mounting frame (2) has a mounting groove (12) at the splice. The mounting grooves (12) of two adjacent mounting frames (2) are slidably connected by a connecting frame (13). The connecting frame (13) is provided with a locking block that adapts to the mounting groove (12).

4. An adjustable sofa with a backrest that can slide forward and backward as described in claim 3, characterized in that, A locking plate (14) is slidably connected to the connecting frame (13). The locking plate (14) is used to slide and engage the mounting groove (12) on the mounting frame (2). A second elastic element (15) is provided between the connecting frame (13) and the locking plate (14).

5. An adjustable sofa with a backrest that can slide forward and backward as described in claim 4, characterized in that, A limiting plate (16) is provided at the top of the mounting frame (2) where the seat pad (4) is assembled. The limiting plate (16) is used to stably limit the seat pad (4) at the top of the mounting frame (2).

6. An adjustable sofa with a backrest that can slide forward and backward as described in claim 5, characterized in that, The cushion cover (11) has an opening at the top that is adapted to the insertion rod (8). A covering cloth (17) is provided at the top of the cushion cover (11) at the opening of the insertion rod (8). The covering cloth (17) is used to cover and protect the insertion rod (8).

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