Sofa with backrest capable of being adjusted in sliding mode

Abstract

The utility model discloses a sofa capable of adjusting a backrest in a sliding manner, which comprises a back frame assembly and a seat frame assembly, the back frame assembly is in sliding fit with the seat frame assembly, the seat frame assembly comprises a bottom frame seat, an annular track group is arranged on the bottom frame seat, and the annular track group comprises a sliding track; the back frame assembly comprises at least one backrest, mounting discs are arranged at the bottoms of the backrests, pulleys are arranged below the mounting discs, the pulleys are clamped with the sliding rails and can slide around the sliding rails, and adjustment and reversing of the sofa are achieved by adjusting the positions of the backrests. The direction of the backrest is changed according to the track of the sliding groove, and the structure that in order to only change the direction of the backrest, a large number of screws are used for dismounting is abandoned; the backrest is slidably mounted on the annular track group of the sofa seat frame assembly through matching of the pulleys and the chutes, and the pulleys can drive the backrest to slide along the inner runway type annular track group, so that the position of the sofa backrest is adjusted, and the direction of the backrest can be conveniently and quickly changed. The pulley sliding structure design is time-saving and labor-saving, and the customer experience is improved.

Description

Technical Field

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

[0002] Sofas have become a very common piece of furniture in people's daily lives. Compared to wooden chairs, sofas offer greater comfort. As people's living standards continue to improve, their demands for furniture are also increasing, and ordinary, single-function sofas will gradually be abandoned.

[0003] Most mainstream sofas currently use a fixed connection structure between the backrest and seat, requiring the entire sofa to be moved to change the backrest's orientation. To ensure easy disassembly and orientation changes, screws are often used for fixing, resulting in a large number of screws required for sofa assembly. This not only increases the risk of losing parts but also increases the difficulty and time required for assembly. In addition, the size of the space to place the sofa must be considered to ensure ease of operation. Utility Model Content

[0004] To overcome the shortcomings of existing technology, this utility model provides a sofa with a sliding adjustable backrest. The backrest frame assembly and the seat frame assembly adopt a pulley design, which can adjust the direction of the sofa by sliding the backrest without moving the sofa, thereby enhancing the user experience.

[0005] The technical problem solved by this utility model can be achieved through the following specific technical solutions:

[0006] A sofa with a sliding adjustable backrest includes a back frame assembly and a seat frame assembly, which are slidably engaged. The seat frame assembly includes a base frame with a circular track assembly, which includes a sliding rail. The back frame assembly includes at least one backrest with a mounting plate at its bottom and a pulley below the mounting plate. The pulley engages with the sliding rail and can slide around the sliding rail, allowing the sofa to be adjusted and repositioned by changing the position of the backrest.

[0007] Furthermore, the bottom frame is a rectangular frame, including a top frame, a bottom frame, and connecting blocks connecting the corners of the top frame and the bottom frame, and a ring track is provided inside the rectangular frame.

[0008] Furthermore, each of the four sides of the rectangular frame is provided with at least one vertical support, which is parallel to the connecting support.

[0009] Furthermore, the circular track assembly is a racetrack-type structure, including an outer ring track, an inner ring track, and a sliding track arranged in parallel intervals. The outer ring track and the inner ring track are placed inside the top frame of a rectangular frame, and the center lines of the outer ring track and the inner ring track are the same. The sliding track is located between the outer ring track and the inner ring track and is placed below them. The two side walls of the sliding track are provided with sliding grooves, and the pulleys are engaged in the sliding grooves and slide around the sliding grooves.

[0010] Furthermore, diagonal supports are provided within the rectangular frame corresponding to the vertical and connecting sections. The top of the diagonal support is fixed to the inner ring track, and the bottom is fixed to the bottom frame of the base. Supporting sections are also provided on the diagonal supports and fixed to the sliding track to support the sliding track.

[0011] Furthermore, horizontal bars are provided at the positions corresponding to the vertical bars and connecting bars between the top frame of the bottom frame base and the outer ring road.

[0012] Furthermore, the backrest is a trapezoidal frame, with its bottom frame movably mounted on the annular track assembly. A middle section is provided in the middle of the bottom frame, and a mounting plate is provided at the bottom of the middle section via a connecting column. At least two pulleys are provided below the mounting plate, respectively cooperating with the side walls of the slide track.

[0013] Furthermore, the side frame of the backrest is provided with several binding holes, which are used to connect two adjacent backrests with straps or flexible strips.

[0014] Furthermore, a limiting tube is provided between two adjacent backrests, and the two ends of the limiting tube are respectively fixed to the two adjacent backrests by fasteners.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] Without moving the sofa, this application allows for backrest orientation adjustment via a sliding track, eliminating the need for extensive screw-based disassembly and reassembly to change the backrest direction. Through the cooperation of pulleys and the sliding track, the backrest is slidably mounted on the annular track assembly of the sofa seat frame. The pulleys drive the backrest to slide along the inner raceway-shaped annular track assembly, achieving backrest position adjustment and enabling convenient and quick backrest orientation changes. This pulley-sliding structure design saves time and effort, enhances the customer experience, and makes the sofa more functional and practical. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the sofa according to this utility model;

[0018] Figure 2 This is the detachable structure of the sofa of this utility model;

[0019] Figure 3 This is an assembly drawing of the backrest and the ring track assembly of this utility model;

[0020] Figure 4 This is an assembly drawing of the backrest and slide rail of this utility model;

[0021] Figure 5 This is a schematic diagram of the backrest structure of this utility model.

[0022] In the diagram: 1-bottom frame, 11-connecting block, 12-vertical block, 13-diagonal support, 14-support block, 15-horizontal block, 2-circular track assembly, 21-outer ring track, 22-inner ring track, 23-sliding track, 231-sliding groove, 3-backrest, 31-middle block, 32-binding hole, 4-mounting plate, 5-pulley, 6-limiting tube, 7-binding strap. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] like Figures 1-4 As shown, a sofa with a sliding adjustable backrest includes a back frame assembly and a seat frame assembly, which are slidably engaged. The seat frame assembly includes a base frame 1 with a ring track assembly 2 on it, which includes a slide rail 23. The back frame assembly includes at least one backrest 3 with a mounting plate 4 at its bottom and a pulley 5 below it. The pulley 5 engages with the slide rail 23 and can slide around it. The sofa can be adjusted and repositioned by adjusting the position of the backrest 3.

[0025] The design utilizes pulleys and sliding tracks 23 to move and change the direction of the backrest 3, breaking away from the conventional structure of sofas in the market. Users can change the direction of the backrest 3 by following the track 23 without moving the entire sofa, which can effectively save time and effort, greatly improve the customer experience, and enhance the product's competitiveness.

[0026] In one specific embodiment, the bottom frame 1 is a rectangular frame, including a top frame, a bottom frame, and connecting blocks 11 connecting the corners of the top frame and the bottom frame. A ring track 23 is provided inside the rectangular frame, and at least one vertical block 12 is provided on the four side frames of the rectangular frame (i.e., between the two connecting blocks 11), with the vertical block 12 parallel to the connecting block 11.

[0027] The circular track assembly 2 is a racetrack-type structure, including an outer ring track 21, an inner ring track 22, and a sliding track 23 arranged in parallel intervals. The outer ring track 21 and the inner ring track 22 are located within the top frame of a rectangular frame, and their centerlines are the same. The sliding track 23 is located between and below the outer ring track 21 and the inner ring track 22, and both sides of the sliding track 23 are provided with sliding grooves 231. Pulleys 5 are engaged in the sliding grooves 231 and slide around them. Diagonal supports 13 are provided within the rectangular frame corresponding to the vertical supports 12 and the connecting supports 11. The top of the diagonal supports 13 is fixed to the inner ring track 22, and the bottom is fixed to the bottom frame of the base 1. Support blocks 14 are also provided on the diagonal supports 13 and fixed to the sliding track 23 to support the sliding track 23. Horizontal supports 15 are provided between the top frame of the base 1 and the outer ring track 21 at positions corresponding to the vertical supports 12 and the connecting supports 11.

[0028] It is understandable that the vertical support 12 / connecting support 11, the diagonal support 13, and the horizontal support 15 form a triangular support structure, which, together with the support support, is used to support the ring track group 2 and ensure the stability of the ring track group 2.

[0029] like Figure 5 As shown, the backrest 3 is a trapezoidal frame, with its bottom frame movably mounted on the annular track assembly 2. A middle section 31 is provided in the middle of the bottom frame, and a mounting plate 4 is mounted on the bottom of the middle section 31 via a connecting column 32. At least two pulleys 5 are provided below the mounting plate 4, respectively engaging with the side walls of the slide channel 231. The mounting plate 4 is mounted above the slide rail 23, and the pulleys 5 are fixed to the mounting plate 4 via mounting shafts. The pulleys 5 are engaged in the slide channel 231 and move along the slide track trajectory to prevent them from falling off during sliding. To ensure stability, three pulleys 5 can be provided below the mounting plate 4, one engaging with the inner slide channel 231 and the other two engaging with the outer slide channel 231; alternatively, four pulleys 5 can be provided, with two engaging with both the inner and outer slide channels 231.

[0030] The side frame of the backrest 3 is provided with several binding holes 32, which are used to connect two adjacent backrests 3 with binding straps 7 or flexible fabric strips. When multiple backrests 3 are on the same straight line in the racetrack-shaped circular track group 2, a limiting tube 6 is provided between two adjacent backrests 3. The two ends of the limiting tube 6 are fixed to the two adjacent backrests 3 by fasteners (such as fastening screws). The limiting tube 6 helps to prevent the backrests 3 from sinking or sliding when leaning against the area of ​​the binding strap 7. The lower part of the adjacent backrests 3 is fixed by the limiting tube 6, and the upper part is fixed by the limiting tube 6 or the binding strap 7.

[0031] The adjacent backrests 3 of this application are connected by straps 7 or flexible fabric to facilitate the backrests 3 to stop or move along curved paths when sliding. When the backrests 3 are on the same straight line, the adjacent backrests 3 are locked with fastening screws by the limiting tube 6 to achieve the limiting effect, so as to prevent the backrests 3 from sinking or sliding when leaning against the strap area.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sofa with a sliding adjustable backrest, comprising a back frame assembly and a seat frame assembly, characterized in that, The back frame assembly and the seat frame assembly are slidably coupled. The seat frame assembly includes a bottom frame base (1), and a ring track assembly (2) is provided on the bottom frame base (1). The ring track assembly (2) includes a slide rail (23). The back frame assembly includes at least one backrest (3). A mounting plate (4) is provided at the bottom of the backrest (3). A pulley (5) is provided below the mounting plate (4). The pulley (5) engages with the slide rail (23) and can slide around the slide rail (23). The sofa can be adjusted and reversed by adjusting the position of the backrest (3).

2. The sofa with a sliding adjustable backrest according to claim 1, characterized in that, The bottom frame (1) is a rectangular frame, including a top frame, a bottom frame and a connecting block (11) connecting the corners of the top frame and the bottom frame. A ring track (23) is provided inside the rectangular frame.

3. A sofa with a sliding adjustable backrest according to claim 2, characterized in that, The rectangular frame has at least one vertical support (12) on each of its four sides, and the vertical support (12) is parallel to the connecting support (11).

4. A sofa with a sliding adjustable backrest according to claim 3, characterized in that, The circular track group (2) is a racetrack-type structure, including an outer ring track (21), an inner ring track (22), and a sliding track (23) arranged in parallel intervals. The outer ring track (21) and the inner ring track (22) are placed inside the top frame of a rectangular frame, and the center lines of the outer ring track (21) and the inner ring track (22) are the same. The sliding track (23) is located between the outer ring track (21) and the inner ring track (22) and is placed below them. The two side walls of the sliding track (23) are provided with sliding grooves (231). The pulley (5) is locked in the sliding groove (231) and slides around the sliding groove (231).

5. A sofa with a sliding adjustable backrest according to claim 4, characterized in that, The rectangular frame is provided with diagonal supports (13) corresponding to the vertical support (12) and the connecting support (11). The top of the diagonal support (13) is fixed to the inner ring (22), and the bottom is fixed to the bottom frame of the bottom frame base (1). A support block (14) is also provided on the diagonal support (13) and fixed to the sliding track (23) to support the sliding track (23).

6. A sofa with a sliding adjustable backrest according to claim 5, characterized in that, A horizontal bar (15) is provided at the position of the vertical bar (12) and the connecting bar (11) between the top frame of the bottom frame base (1) and the outer ring road (21).

7. A sofa with a sliding adjustable backrest according to claim 4, characterized in that, The backrest (3) is a trapezoidal frame, and its bottom frame is movably set on the annular track group (2). A middle section (31) is set in the middle of the bottom frame. A mounting plate (4) is set at the bottom of the middle section (31) through a connecting column (32). At least two pulleys (5) are set below the mounting plate (4) and cooperate with the two side walls of the slide channel (231) respectively.

8. A sofa with a sliding adjustable backrest according to claim 7, characterized in that, The side frame of the backrest (3) is provided with several binding holes (32) to connect two adjacent backrests (3) with straps or flexible strips.

9. A sofa with a sliding adjustable backrest according to claim 7, characterized in that, A limiting tube (6) is provided between two adjacent backrests (3), and the two ends of the limiting tube (6) are respectively fixed to the two adjacent backrests (3) by fasteners.

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