Sofa backrest adjusting mechanism and sofa

Abstract

The application provides a sofa backrest adjusting mechanism and a sofa. The sofa backrest adjusting mechanism comprises a pair of guide rails, a backrest mounting member, a mounting seat, a locking mechanism and an operating part. The backrest mounting member is in sliding connection with the pair of guide rails. The mounting seat is fixed to the backrest mounting member and located between the pair of guide rails. The locking mechanism comprises a pair of moving members in sliding connection with the mounting seat. The operating part is in power connection with the locking mechanism to switch the locking mechanism between a locked state and an unlocked state. In the locked state, the pair of moving members move away from each other to respectively extend into the pair of guide rails and be fixed in cooperation with the guide rails. In the unlocked state, the pair of moving members move close to each other to be respectively arranged in a spaced manner from the pair of guide rails. The application sets the operating part and is in power connection with the locking mechanism. A user can directly unlock the locking mechanism through the operating part to adjust the backrest without moving the whole backrest, which is not only more convenient in operation but also improves the overall use experience.

Description

Technical Field

[0001] This application relates to the field of home furnishing technology, and in particular to a sofa backrest adjustment mechanism and a sofa. Background Technology

[0002] Sofas, as an essential item in modern homes, have entered countless households, not only enhancing home comfort but also embodying people's pursuit of a high quality of life. Some sofas are designed with adjustable backrests to further optimize the user experience.

[0003] Most adjustable sofas on the market still use a relatively traditional mechanical structure. Before adjusting the backrest position, users often need to move the entire backrest to "unlock" it before they can move it. The backrest is quite heavy, and this step is not only cumbersome but also affects the smoothness and convenience of the adjustment process, thus reducing the user experience. Utility Model Content

[0004] This application provides a sofa backrest adjustment mechanism and a sofa to solve related technical problems.

[0005] This application provides a sofa backrest adjustment mechanism, including: a pair of guide rails, a backrest mounting component, a mounting base, a locking mechanism, and an operating component; The backrest mounting component is slidably connected to the pair of guide rails; the mounting base is fixed to the backrest mounting component and located between the pair of guide rails. The locking mechanism includes a pair of movable parts slidably connected to the mounting base, and the operating component is poweredly connected to the locking mechanism to switch the locking mechanism between a locked state and an unlocked state. In the locked state, the pair of moving parts move away from each other until they extend into the pair of guide rails and are fixed in place with the guide rails; in the unlocked state, the pair of moving parts move closer to each other until they are spaced apart from the pair of guide rails.

[0006] Furthermore, the operating component includes a cable and a lever, with the two ends of the cable being poweredly connected to the lever and the moving component, respectively.

[0007] Furthermore, the locking mechanism includes an input component connected to the cable, the input component being slidably connected to the mounting base along the pulling direction of the cable, and the pair of movable components being located on both sides of the input component.

[0008] Furthermore, the mounting base is provided with a power guide post, and the input component is provided with a power guide hole arranged along the pulling direction, and the power guide post is installed in conjunction with the power guide hole.

[0009] Furthermore, the input component is fixed with a locking guide post, and the mounting base is provided with a first locking guide hole extending along the pulling direction, and the locking guide post is engaged with the first locking guide hole.

[0010] Furthermore, the movable component is provided with a second locking guide hole, and the locking guide post cooperates with the first locking guide hole and the second locking guide hole. The extension direction of the second locking guide hole is inclined to the pulling direction; the second locking guide holes of a pair of movable components extend away from each other in the pulling direction.

[0011] Furthermore, the mounting base is provided with a pair of limiting seats, which are slidably connected to the moving part.

[0012] Furthermore, the limiting seat includes a pair of connecting walls fixed to the mounting base, a pair of side walls extending from the pair of connecting walls toward a side away from the mounting base, and a top wall connecting the pair of side walls. There is a gap between the top wall and the mounting base, and the moving member is slidably disposed within the gap.

[0013] Furthermore, within the gap, a first wear-resistant plate is placed on one side of the mounting base, and a second wear-resistant plate is placed on one side of the mounting base, and the moving member moves between the first wear-resistant plate and the second wear-resistant plate.

[0014] Furthermore, each of the movable parts is connected to the mounting base by an elastic element, which is in a stretched state in the unlocked state.

[0015] Furthermore, a plurality of elastic elements are connected between the connecting support plate of each of the movable parts and the mounting support plate of the mounting base.

[0016] Furthermore, the operating component has a connection point on its upper part for connecting to the bottom of the backrest.

[0017] A second aspect of this application provides a sofa, comprising: a backrest assembly, a mounting frame, and the aforementioned sofa backrest adjustment mechanism; the sofa backrest adjustment mechanism is fixed to the mounting frame, and the backrest assembly is fixed to the backrest mounting member.

[0018] This application sets up an operating component and connects the operating component to the locking mechanism. Users can directly unlock the locking mechanism and adjust the backrest by operating the component, without having to move the entire backrest. This not only makes the operation more convenient but also improves the overall user experience.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0021] Figure 1 This is a structural diagram of a sofa according to an exemplary embodiment of this application; Figure 2 yes Figure 1 A structural diagram of the sofa from another angle; Figure 3 yes Figure 1 Assembly structure diagram of the sofa backrest adjustment mechanism; Figure 4 yes Figure 1 Structural diagram of the sofa backrest adjustment mechanism; Figure 5 yes Figure 4 3D exploded view of the sofa backrest adjustment mechanism; Figure 6 yes Figure 5 Assembly structure diagram of the mounting base and locking mechanism; Figure 7 yes Figure 6 Assembly structure diagram of the mounting base and locking mechanism from the rear view; Figure 8 yes Figure 6 Partial assembly structure diagram of the mounting base and locking mechanism from a top view; Figure 9 yes Figure 6 Enlarged view of part A in the image.

[0022] Reference numerals: 1. Sofa backrest adjustment mechanism; 10. Backrest assembly; 11. Connector; 12. Mounting frame; 20. Sofa cushion; 21. Clearance groove; 22. Guide rail; 30. Mating hole; 31. First end plate; 32. Second end plate; 33. Backrest mounting component; 40. Mounting seat; 50. Power guide column; 500. First locking guide hole; 501. Limiting seat; 511. Connecting wall; 512. Side wall; 513. Top wall; 514. Gap; 515. First wear-resistant plate; 516. Second wear-resistant plate; 517. Mounting support plate; 60. Locking mechanism; 61. Input component; 611. Power guide hole; 612. Locking guide column; 62. Moving component; 621. Second locking guide hole; 622. Connecting support plate; 623. Mating tooth; 63. Elastic component; 70. Operating component; 700. Connecting position; 71. Pull cable; 72. Actuating component. Detailed Implementation

[0023] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0025] Currently, most adjustable sofas on the market still use a relatively traditional mechanical structure. Before adjusting the backrest position, users often need to move the entire backrest to "unlock" it. The backrest is quite heavy, making this step not only cumbersome but also affecting the smoothness and convenience of the adjustment process, thus reducing the user experience. This application provides a sofa backrest adjustment mechanism and vehicle to solve these technical problems.

[0026] like Figures 1 to 4 As shown, this application provides a sofa, including a backrest assembly 10, a mounting frame 20, and a sofa backrest adjustment mechanism 1. The backrest assembly 10 includes a backrest 11 and a connector 12. The mounting frame 20 is fitted with a sofa cushion 21. The sofa cushion 21 is provided with a relief groove 22 for the backrest assembly 10 to slide. The sofa backrest adjustment mechanism 1 includes a pair of guide rails 30, a backrest mounting member 40, a mounting base 50, a locking mechanism 60, and an operating component 70.

[0027] The backrest mounting member 40 is slidably connected to a pair of guide rails 30. The mounting base 50 is fixed to the backrest mounting member 40 and located between the pair of guide rails 30. The locking mechanism 60 includes a pair of moving parts 62 slidably connected to the mounting base 50, and the operating part 70 is poweredly connected to the locking mechanism 60 to switch the locking mechanism 60 between a locked state and an unlocked state.

[0028] In the locked state, a pair of moving parts 62 move away from each other until they extend into a pair of guide rails 30 and are fixed in place. In the unlocked state, a pair of moving parts 62 move closer to each other until they are spaced apart from the pair of guide rails 30. The guide rails 30 are provided with mating holes 31, which allow the moving parts 62 to extend into to lock the locking mechanism 60 and extend out to unlock the locking mechanism 60.

[0029] This application sets up an operating component 70 and connects the operating component 70 to the locking mechanism 60. Users can directly unlock the locking mechanism 60 through the operating component 70 and adjust the backrest 11 without having to move the entire backrest assembly 10. This not only makes the operation more convenient but also improves the overall user experience.

[0030] The guide rail 30 has a first end plate 32 and a second end plate 33 at both ends, which are used to fix the guide rail 30 to the mounting frame 20, so that the sofa backrest adjustment mechanism 1 is fixed to the mounting frame 20. The backrest assembly 10 is fixed to the backrest mounting piece 40.

[0031] Please refer to the following: Figures 5 to 7 As shown, the mounting base 50 is provided with a power guide post 500, which cooperates with the locking mechanism 60 to realize the sliding of the components in the locking mechanism 60. The mounting base 50 is also provided with a first locking guide hole 501, which is used to guide the locking mechanism 60 during locking. The mounting base 50 is also provided with a limit seat 51, which is slidably connected to the moving part 62 to limit the movement of the moving part 62.

[0032] Please refer to the following: Figure 9 As shown, the limiting seat 51 includes a pair of connecting walls 511, a pair of side walls 512, and a top wall 513. The pair of connecting walls 511 are fixed to the mounting base 50. The pair of side walls 512 extend from the pair of connecting walls 511 toward the side opposite to the mounting base 50. The top wall 513 connects to the pair of side walls 512. A gap 514 exists between the top wall 513 and the mounting base 50, within which the moving member 62 slides. A mounting support plate 517 is provided on the top of the limiting seat 51 for mounting the relevant components of the locking mechanism 60.

[0033] By setting the limiting seat 51, the movement of the moving part 62 is limited at the top, bottom and side, and can be inserted into the mating hole 31 of the guide rail 30 more accurately, which further improves the smoothness of adjusting the backrest and improves the user experience.

[0034] Within the gap 514, a first wear-resistant plate 515 is placed on one side of the top wall 513, and a second wear-resistant plate 516 is placed on one side of the mounting base 50. The movable component 62 moves between the first wear-resistant plate 515 and the second wear-resistant plate 516. By setting the first wear-resistant plate 515 and the second wear-resistant plate 516, the movable component 62 is further limited in the height direction, further improving the smoothness of backrest adjustment and enhancing the user experience.

[0035] The operating component 70 includes a pull cable 71 and an actuating element 72. The two ends of the pull cable 71 are power-connected to the actuating element 72 and the output element 62, respectively. The pull cable structure is relatively simple and easy for the user to operate. The operating component 70 has a connection position 700 at its upper part for connecting to the bottom of the backrest 11. The actuating element 72 has a corresponding hole structure at its upper part. By placing the operating component 70 at the bottom of the backrest 11, the user can unlock the sofa while moving it, improving the ease of operation.

[0036] The locking mechanism 60 includes an input 61 connected to a cable 71. The input 61 is slidably connected to the mounting base 50 along the pulling direction of the cable 71. A pair of movable members 62 are located on both sides of the input 61. By using a single input 61 to control a pair of movable members 62, the ease of operation of the sofa is further improved.

[0037] The input component 61 is provided with a power guide hole 611 arranged along the pulling direction, and the power guide column 500 is installed in cooperation with the power guide hole 611. During the pulling process of the input component 61, the cooperation between the power guide hole 611 and the power guide column 500 achieves limiting, avoids deviation of the movement trajectory of the input component 61, ensures the smoothness of the locking and unlocking process, and thus improves the ease of operation of the sofa.

[0038] The input component 61 is fixed with a locking guide post 612, and the mounting base 50 is provided with a first locking guide hole 501 extending along the pulling direction. The locking guide post 612 cooperates with the first locking guide hole 501. The cooperation between the first locking guide hole 501 and the locking guide post 612 achieves limiting, further preventing deviation of the movement trajectory of the input component 61, improving the smoothness of the locking and unlocking process, and further improving the ease of operation of the sofa.

[0039] The movable member 62 is provided with a second locking guide hole 621, and the locking guide post 612 is engaged with the first locking guide hole 501 and the second locking guide hole 621. The extension direction of the second locking guide hole 621 is inclined to the pulling direction. The second locking guide holes 621 of the pair of movable members 62 extend away from each other in the pulling direction.

[0040] The locking guide post 612 is engaged with both the first locking guide hole 501 and the second locking guide hole 621. During the process of the locking guide post 612 and the first locking guide hole 501 sliding along the pulling direction of the cable, the second locking guide hole 621 is inclined, and the locking guide post 612 will exert a force on the moving member 62 perpendicular to the pulling direction of the cable, causing the moving member 62 to move, so that the moving member 62 extends into the guide rail 30 or disengages from the guide rail 30.

[0041] by Figure 8 For example, Figure 8 This diagram shows the locking mechanism 60 in the unlocked state. When it enters the locked state, the locking guide post 612 moves downward, pushing the moving part 62 to move away from each other to both sides, causing the mating teeth 623 of the moving part 62 to extend into the mating holes 31 of the guide rail 30. Conversely, when the locking mechanism 60 moves from the locked state to the unlocked state, the locking guide post 612 moves upward. Figure 8The upward direction is the pulling direction of the cable. The locking guide post 612 pulls the two moving parts 62 closer together, so that the mating teeth 623 disengage from the mating hole 31.

[0042] There can be multiple mating holes 31, distributed from one end of the guide rail 30 to the other. When the sofa is adjusted to the corresponding position, the mating teeth 623 extend into the mating holes 31 to lock the sofa in place.

[0043] Each movable component 62 is connected to the mounting base 50 by an elastic element 63. In the unlocked state, the elastic element 63 is stretched. The elastic element 63 can be a spring. The movable component 62 is provided with a connecting support plate 622, and the two ends of the elastic element 63 are respectively connected to the mounting support plate 517 and the connecting support plate 622. When the user stops pressing the toggle component 72, the movable component 62 can move automatically under the action of the elastic element 63 without the need for manual operation by the user, further improving the convenience of operation.

[0044] Multiple elastic elements 63 are connected between the connecting support plate 622 of each movable component 62 and the mounting support plate 517 of the mounting base 50. By setting multiple elastic elements 63, a greater force can be provided to the movable component 62, thereby further improving the smoothness of backrest adjustment.

[0045] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A sofa backrest adjustment mechanism, characterized in that, include: A pair of guide rails, a backrest mounting bracket, a mounting base, a locking mechanism, and operating components; The backrest mounting component is slidably connected to the pair of guide rails; the mounting base is fixed to the backrest mounting component and located between the pair of guide rails. The locking mechanism includes a pair of movable parts slidably connected to the mounting base, and the operating component is poweredly connected to the locking mechanism to switch the locking mechanism between a locked state and an unlocked state. In the locked state, the pair of moving parts move away from each other until they extend into the pair of guide rails and are fixed in place with the guide rails; in the unlocked state, the pair of moving parts move closer to each other until they are spaced apart from the pair of guide rails.

2. The sofa backrest adjustment mechanism according to claim 1, characterized in that, The operating components include a cable and a lever, with the two ends of the cable being poweredly connected to the lever and the moving component, respectively.

3. The sofa backrest adjustment mechanism according to claim 2, characterized in that, The locking mechanism includes an input component connected to the cable, the input component being slidably connected to the mounting base along the pulling direction of the cable, and a pair of movable components located on both sides of the input component.

4. The sofa backrest adjustment mechanism according to claim 3, characterized in that, The mounting base is provided with a power guide column, and the input component is provided with a power guide hole arranged along the pulling direction. The power guide column and the power guide hole are fitted together for installation.

5. The sofa backrest adjustment mechanism according to claim 3, characterized in that, The input component is fixed with a locking guide post, and the mounting base is provided with a first locking guide hole extending along the pulling direction, and the locking guide post is engaged with the first locking guide hole.

6. The sofa backrest adjustment mechanism according to claim 5, characterized in that, The movable component is provided with a second locking guide hole, and the locking guide post is engaged with the first locking guide hole and the second locking guide hole. The extension direction of the second locking guide hole is inclined to the pulling direction. The second locking guide holes of a pair of movable components extend away from each other in the pulling direction.

7. The sofa backrest adjustment mechanism according to claim 1, characterized in that, The mounting base is provided with a pair of limiting seats, which are slidably connected to the moving part.

8. The sofa backrest adjustment mechanism according to claim 7, characterized in that, The limiting seat includes a pair of connecting walls fixed to the mounting base, a pair of side walls extending from the pair of connecting walls toward a side away from the mounting base, and a top wall connecting the pair of side walls. There is a gap between the top wall and the mounting base, and the moving member is slidably disposed within the gap.

9. The sofa backrest adjustment mechanism according to claim 8, characterized in that, Within the gap, a first wear-resistant plate is placed on one side of the top wall, and a second wear-resistant plate is placed on one side of the mounting base. The moving component moves between the first wear-resistant plate and the second wear-resistant plate.

10. The sofa backrest adjustment mechanism according to claim 1, characterized in that, Each of the movable parts is connected to the mounting base by an elastic element, which is in a stretched state in the unlocked state.

11. The sofa backrest adjustment mechanism according to claim 10, characterized in that, A plurality of elastic elements are connected between the connecting support plate of each of the movable parts and the mounting support plate of the mounting base.

12. The sofa backrest adjustment mechanism according to claim 1, characterized in that, The operating component has a connection point at the top for connecting to the bottom of the backrest.

13. A sofa, characterized in that, include: The backrest assembly, the mounting frame, and the sofa backrest adjustment mechanism as described in any one of claims 1-12; the sofa backrest adjustment mechanism is fixed to the mounting frame, and the backrest assembly is fixed to the backrest mounting member.

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