Sofa frame which does not lean against wall when in zero-gravity state

Abstract

A sofa frame which does not lean against a wall when in a zero-gravity state, the sofa frame comprising a bottom base (3), a first driving mechanism (1), a second driving mechanism (2), a leg support assembly (4), a backrest adjustment assembly (7), a movable base (5) which is slidably connected to the bottom base (3), and a push rod (6) which is arranged at an output end of the first driving mechanism (1), wherein the push rod (6) is connected to the movable base (5); and the housing of the first driving mechanism (1) is hinged to the bottom base (3), the housing of the second driving mechanism (2) is hinged to the push rod (6), the leg support assembly (4) is hinged to both the output end of the second driving mechanism (2) and one end of the movable base (5), and the backrest adjustment assembly (7) is hinged to both the other end of the movable base (5) and the bottom base (3). The first driving mechanism (1) can drive the backrest adjustment component (7) to move in a direction away from a wall, so as to facilitate the adjustment of the zero-gravity state of the sofa frame. The movements of the movable base (5) and the leg support assembly (4) do not interfere with each other, and the second driving mechanism (2) drives the leg support assembly (4) to fold, such that same can adapt to various application scenarios, thereby improving the practicality.

Description

A zero-gravity, zero-wall sofa frame Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a zero-gravity and zero-wall-support sofa frame. Background Art

[0002] Functional sofas on the market need to be placed at a certain distance from the wall, significantly increasing the space required. Patent application number CN202310498018.8, titled "Zero-Gravity, Zero-Wall-Relaxation, Zero-Displacement Chair Frame," discloses a zero-gravity chair frame. However, the leg support assembly and backrest connecting rod in this patent are controlled by a single drive device, making it impossible to adjust and control the leg support assembly and backrest connecting rod separately. This limits the posture adjustment capabilities of the chair frame in this patent application. Therefore, this drawback is obvious, and a solution is urgently needed.

[0003] Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a zero-gravity and zero-wall sofa frame.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A zero-gravity, zero-wall sofa frame, which includes a base, a first drive mechanism, a second drive mechanism, a leg support assembly, a back adjustment assembly, a movable seat slidably connected to the base, and a push rod arranged at the output end of the first drive mechanism, wherein the push rod is connected to the movable seat; the shell of the first drive mechanism is hinged to the base, the shell of the second drive mechanism is hinged to the push rod, the leg support assembly is respectively hinged to the output end of the second drive mechanism and one end of the movable seat, and the back adjustment assembly is respectively hinged to the other end of the movable seat and the base; the second drive mechanism is used to drive the leg support assembly to rotate relative to the movable seat; the first drive mechanism is used to drive the push rod and the movable seat to slide relative to the base, and drive the back adjustment assembly to rotate relative to the base through the movable seat; the end of the movable seat hinged to the leg support assembly can slide relative to the base to tilt upward.

[0007] Furthermore, the sofa frame also includes a sliding assembly, and the movable seat is slidably connected to the base via the sliding assembly; the sliding assembly includes a first slide rail and a second slide rail respectively arranged on the base and a first slider and a second slider respectively arranged on the movable seat, the first slide rail is slidably connected to the first slider, and the second slide rail is slidably connected to the second slider; the first slide rail is located between the second slide rail and the backrest adjustment assembly, and the second slide rail is tilted upward at one end away from the second slide rail.

[0008] Furthermore, the backrest adjustment assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a backrest structure, one end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the first connecting rod is connected to the movable seat, the other end of the second connecting rod is hinged to one end of the third connecting rod, the other end of the third connecting rod is hinged to the base, and the backrest structure is hinged to the first connecting rod and the second connecting rod respectively.

[0009] Furthermore, the backrest structure includes a fourth connecting rod, a backrest member, a fifth connecting rod and a sixth connecting rod, one end of the fourth connecting rod is hinged to the middle part of the first connecting rod, the other end of the fourth connecting rod is hinged to the middle part of the backrest member, the middle part of the fourth connecting rod is hinged to one end of the fifth connecting rod, the other end of the fifth connecting rod is hinged to an end of the second connecting rod close to the first connecting rod, one end of the backrest member is hinged to one end of the sixth connecting rod, and the other end of the sixth connecting rod is hinged to an end of the second connecting rod close to the first connecting rod.

[0010] Furthermore, a connecting seat is provided on the base.

[0011] Furthermore, an insertion hole is provided on the base.

[0012] Furthermore, the height of the base from the ground is greater than 140CM.

[0013] Furthermore, both the first driving mechanism and the second driving mechanism may adopt electric push rods or air cylinders.

[0014] The beneficial effects of the present invention are as follows: the first driving mechanism of the present invention limits the movable seat by means of a push rod, and the movable seat will not slide or move relative to the base, which is conducive to the smooth deployment of the leg support assembly. When the first driving mechanism adjusts the movable seat to a tilt, it can drive the backrest adjustment assembly to move in a direction away from the wall, thereby preventing the backrest adjustment assembly from colliding with the wall during the process of rotating to a tilt, and facilitating the adjustment of the zero-gravity state of the sofa frame. The movable seat and the leg support assembly are respectively controlled by the first driving mechanism and the second driving mechanism, and the movements of the movable seat and the leg support assembly do not interfere with each other. When in a zero-gravity state, the leg support assembly can also be driven to fold by the second driving mechanism, so that the present invention can be adapted to a variety of different usage scenarios, thereby improving the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of the three-dimensional structure of the utility model in a zero-gravity state.

[0016] FIG2 is a schematic diagram of a partial three-dimensional structure of the utility model in a lying state.

[0017] FIG3 is a front view schematic diagram of the structure of the present invention in a zero gravity state.

[0018] FIG4 is a schematic diagram of the three-dimensional structure of the utility model in a sitting state.

[0019] Explanation of the accompanying drawings: 1. First driving mechanism; 2. Second driving mechanism; 3. Base; 4. Leg supporting assembly; 5. Movable seat; 6. Push rod; 7. Backrest adjustment assembly; 8. Sliding assembly; 9. Connecting seat; 10. Insertion hole; 81. First slide rail; 82. Second slide rail; 71. First connecting rod; 72. Second connecting rod; 73. Third connecting rod; 74. Fourth connecting rod; 75. Fifth connecting rod; 76. Sixth connecting rod; 77. Backrest structure; 78. Backrest member. DETAILED DESCRIPTION

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0021] As shown in Figures 1 to 4, the utility model provides a zero-gravity, zero-wall sofa frame, which includes a base 3, a first driving mechanism 1, a second driving mechanism 2, a leg support assembly 4, a back adjustment assembly 7, a movable seat 5 slidably connected to the base 3, and a push rod 6 arranged at the output end of the first driving mechanism 1, the push rod 6 is fixedly connected to the movable seat 5; the shell of the first driving mechanism 1 is hinged to the base 3, the shell of the second driving mechanism 2 is hinged to the push rod 6, the leg support assembly 4 is respectively hinged to the output end of the second driving mechanism 2 and one end of the movable seat 5, and the back adjustment assembly 7 is respectively hinged to the other end of the movable seat 5 and the base 3; the second driving mechanism 2 is used to drive the leg support assembly 4 to rotate relative to the movable seat 5 to drive the leg support assembly 4 to expand or fold; the first driving mechanism 1 is used to drive the push rod 6 and the movable seat 5 to slide relative to the base 3, and then drive the back adjustment assembly 7 to rotate relative to the base 3 through the movable seat 5; the end of the movable seat 5 hinged to the leg support assembly 4 can slide relative to the base 3 to tilt upward.

[0022] During actual use, when the sofa frame is in a sitting position, the leg support assembly 4 is in a folded position, the backrest adjustment assembly 7 is in an upright position, the length of the output end of the first drive mechanism 1 and the output end of the second drive mechanism 2 extending out of the body is at its shortest, and the end of the base 3 adjacent to the backrest adjustment assembly 7 is placed against a wall. When the second drive mechanism 2 is activated, the length of the output end of the second drive mechanism 2 extending out of the housing of the second drive mechanism 2 continuously increases. The output end of the second drive mechanism 2 drives the leg support assembly 4 to rotate relative to the output end of the second drive mechanism 2 and the movable seat 5, thereby causing the leg support assembly 4 to unfold, facilitating the leg support assembly 4 to support the user's legs. At this time, the sofa frame is in a reclining position. When the second drive mechanism 2 is driving the leg support assembly 4 to unfold, the length of the output end of the first drive mechanism 1 extending into the housing of the first drive mechanism 1 remains unchanged, i.e., the first drive mechanism 1 limits the movable seat 5 via the push rod 6, so that the movable seat 5 does not slide or move relative to the base 3, facilitating smooth unfolding of the leg support assembly 4. When the sofa frame needs to be adjusted from the reclining position to the zero-gravity position, the first drive mechanism 1 is activated, and the length of the output end of the first drive mechanism 1 extending from the housing of the first drive mechanism 1 continuously increases. The output end of the first drive mechanism 1 pushes the push rod 6 and the movable seat 5 to slide relative to the base 3 away from the wall. The output end of the first drive mechanism 1 simultaneously drives the movable seat 5 and the leg support assembly 4 to tilt upward, and the angle between the movable seat 5 and the base 3 continuously increases. The movable seat 5 can also drive the backrest adjustment assembly 7 connected thereto to move away from the wall. The backrest adjustment assembly 7 is then rotated relative to the base 3 to facilitate the backrest adjustment assembly 7 to rotate to the reclining position for convenient leaning, until the length of the output end of the first drive mechanism 1 extending from the housing of the first drive mechanism 1 reaches its maximum, at which point the sofa frame is in the zero-gravity position. The first drive mechanism 1 of the utility model can drive the backrest adjustment assembly 7 to move away from the wall when adjusting the movable seat 5 to the reclining position, preventing the backrest adjustment assembly 7 from interfering with the wall during the rotation to the reclining position, thereby facilitating the adjustment of the sofa frame to the zero-gravity position. The movable seat 5 and the leg support assembly 4 are controlled respectively by the first drive mechanism 1 and the second drive mechanism 2. The movements of the movable seat 5 and the leg support assembly 4 do not interfere with each other. When in a zero gravity state, the leg support assembly 4 can also be folded by the second drive mechanism 2, so that the utility model can adapt to a variety of different usage scenarios, thereby improving the practicality of the utility model.

[0023] Furthermore, the sofa frame also includes a sliding assembly 8, and the movable seat 5 is slidably connected to the base 3 via the sliding assembly 8; the sliding assembly 8 includes a first slide rail 81 and a second slide rail 82 respectively arranged on the base 3 and a first slider (not shown in the figure) and a second slider (not shown in the figure) respectively arranged on the movable seat 5, the first slide rail 81 is slidably connected to the first slider, and the second slide rail 82 is slidably connected to the second slider; the first slide rail 81 is located between the second slide rail 82 and the backrest adjustment assembly 7, and the second slide rail 82 is tilted upward away from the end of the second slide rail 82.

[0024] During actual use, the first drive mechanism 1 drives the push rod 6 and the movable seat 5 to slide relative to the base 3 in a direction away from the backrest adjustment assembly 7. The first slider slides within the first slide rail 81, and the second slider slides within the second slide rail 82. The output end of the first drive mechanism 1 pushes the second slider to slide upward within the second slide rail 82, thereby driving the movable seat 5 to slide upward and tilt away from the end of the backrest adjustment assembly 7, thereby achieving zero-gravity rotation of the sofa frame and preventing the backrest adjustment assembly 7 from interfering with the wall. The sliding assembly 8 has a simple structure and can guide the two ends of the movable seat 5 separately, which is conducive to the precise sliding and tilting of the movable seat 5.

[0025] Furthermore, the backrest adjustment assembly 7 includes a first connecting rod 71, a second connecting rod 72, a third connecting rod 73 and a backrest structure 77, one end of the first connecting rod 71 is hinged to one end of the second connecting rod 72, the other end of the first connecting rod 71 is fixedly connected to the movable seat 5, the other end of the second connecting rod 72 is hinged to one end of the third connecting rod 73, the other end of the third connecting rod 73 is hinged to the base 3, and the backrest structure 77 is hinged to the first connecting rod 71 and the second connecting rod 72 respectively.

[0026] During actual use, when the movable seat 5 slides in the direction away from the wall, the movable seat 5 pulls the second link 72 and the third link 73 forward through the first link 71, and the third link 73 first rotates relative to the base 3, so that the second link 72 and the backrest structure 77 move synchronously in the direction away from the wall, that is, move forward, and then the first link 71 continues to pull the second link 72, and the second link 72 can rotate synchronously relative to the first link 71 and the third link 73 to drive the backrest structure 77 to tilt in the direction close to the wall for easy leaning.

[0027] Furthermore, the backrest structure 77 includes a fourth connecting rod 74, a backrest member 78, a fifth connecting rod 75 and a sixth connecting rod 76, one end of the fourth connecting rod 74 is hinged to the middle part of the first connecting rod 71, the other end of the fourth connecting rod 74 is hinged to the middle part of the backrest member 78, the middle part of the fourth connecting rod 74 is hinged to one end of the fifth connecting rod 75, the other end of the fifth connecting rod 75 is hinged to one end of the second connecting rod 72 close to the first connecting rod 71, one end of the backrest member 78 is hinged to one end of the sixth connecting rod 76, and the other end of the sixth connecting rod 76 is hinged to one end of the second connecting rod 72 close to the first connecting rod 71.

[0028] During actual use, when the first link 71 pulls the second link 72 forward, the second link 72 rotates relative to the first link 71 and the third link 73 respectively. The end of the second link 72 close to the first link 71 rotates forward and pushes the fifth link 75 hinged thereto. The fifth link 75 pushes the middle part of the fourth link 74 forward. One end of the fourth link 74 is restrained by the first link 71. Under the thrust of the fifth link 75, the other end of the fourth link 74 drives the middle part of the backrest 78 forward. One end of the backrest 78 is restrained by the sixth link 76, causing the end of the backrest 78 close to the sixth link 76 to rotate downward, thereby achieving the tilting of the backrest 78. The structure of the backrest adjustment assembly 7 is simple and compact. The backrest adjustment assembly 7 is easy to install and connect.

[0029] Specifically, the leg support assembly 4 may adopt an existing leg connecting rod structure, which will not be described in detail here.

[0030] Furthermore, a connecting seat 9 is provided on the base 3. The connecting seat 9 is provided to facilitate the connection between the base 3 and the external structure.

[0031] Furthermore, an insertion hole 10 is provided on the base 3. The external structure can be fixed by inserting it into the insertion hole 10, and the fixation of the external structure and the base 3 is convenient.

[0032] Furthermore, the height of the base 3 from the ground is greater than 140CM.

[0033] During actual use, the distance between the base 3 and the ground is increased so that the sweeping device can enter the gap between the base 3 and the ground for cleaning, making cleaning more convenient.

[0034] Furthermore, both the first drive mechanism 1 and the second drive mechanism 2 can utilize electric push rods, pneumatic cylinders, or linear drive modules. Different drive systems can be selected for the first drive mechanism 1 and the second drive mechanism 2 based on practical needs. When the first drive mechanism 1 utilizes a linear drive module as shown in the figure, the output end of the first drive mechanism 1 slides back and forth outside the housing of the first drive mechanism 1, driving the push rod 6 and movable seat 5 to slide, thereby achieving the position conversion of the sofa frame. Its structure and function are identical or similar to those of existing linear drive modules and will not be further described here.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A zero-gravity and zero-wall-adjacent sofa frame, characterized in that: It includes a base (3), a first driving mechanism (1), a second driving mechanism (2), a leg support assembly (4), a backrest adjustment assembly (7), a movable seat (5) slidably connected to the base (3), and a push rod (6) provided at the output end of the first driving mechanism (1), and the push rod (6) is connected to the movable seat (5); the housing of the first driving mechanism (1) is hinged to the base (3), the housing of the second driving mechanism (2) is hinged to the push rod (6), the leg support assembly (4) is respectively hinged to the output end of the second driving mechanism (2) and one end of the movable seat (5), and the backrest adjustment assembly (7) is respectively hinged to the other end of the movable seat (5) and the base (3); the second driving mechanism (2) is used to drive the leg support assembly (4) to rotate relative to the movable seat (5); the first driving mechanism (1) is used to drive the push rod (6) and the movable seat (5) to slide relative to the base (3), and drive the backrest adjustment assembly (7) to rotate relative to the base (3) through the movable seat (5); one end of the movable seat (5) hinged to the leg support assembly (4) can slide relative to the base (3) to tilt upward.

2. The zero-gravity zero-wall-adjacent sofa frame according to claim 1, wherein: The sofa frame further includes a sliding assembly (8), and the movable seat (5) is slidably connected to the base (3) via the sliding assembly (8); the sliding assembly (8) includes a first slide rail (81) and a second slide rail (82) respectively provided on the base (3), and a first slider and a second slider respectively provided on the movable seat (5), the first slide rail (81) is slidably connected to the first slider, and the second slide rail (82) is slidably connected to the second slider; the first slide rail (81) is located between the second slide rail (82) and the backrest adjustment assembly (7), and one end of the second slide rail (82) away from the second slide rail (82) tilts upward.

3. A zero-gravity and zero-wall-adjacent sofa frame according to claim 1, characterized in that: The backrest adjustment assembly (7) includes a first connecting rod (71), a second connecting rod (72), a third connecting rod (73), and a backrest structure (77), one end of the first connecting rod (71) is hinged to one end of the second connecting rod (72), the other end of the first connecting rod (71) is connected to the movable seat (5), the other end of the second connecting rod (72) is hinged to one end of the third connecting rod (73), the other end of the third connecting rod (73) is hinged to the base (3), and the backrest structure (77) is respectively hinged to the first connecting rod (71) and the second connecting rod (72).

4. The zero-gravity zero-wall-adjacent sofa frame according to claim 3, characterized in that: The backrest structure (77) includes a fourth connecting rod (74), a backrest member (78), a fifth connecting rod (75), and a sixth connecting rod (76). One end of the fourth connecting rod (74) is hinged to the middle of the first connecting rod (71), and the other end of the fourth connecting rod (74) is hinged to the middle of the backrest member (78). The middle of the fourth connecting rod (74) is hinged to one end of the fifth connecting rod (75), and the other end of the fifth connecting rod (75) is hinged to one end of the second connecting rod (72) close to the first connecting rod (71). One end of the backrest member (78) is hinged to one end of the sixth connecting rod (76), and the other end of the sixth connecting rod (76) is hinged to one end of the second connecting rod (72) close to the first connecting rod (71).

5. The zero-gravity and zero-wall-reliant sofa frame according to claim 1, characterized in that: A connecting seat (9) is provided on the base (3).

6. The zero-gravity and wall-free sofa frame according to claim 5, characterized in that: An insertion hole (10) is provided on the base (3).

7. The zero-gravity zero-wall-relying sofa frame according to claim 1, characterized in that: The height of the base (3) from the ground is greater than 140 cm.

8. A zero-gravity and zero-wall-reliant sofa frame according to claim 1, characterized in that: Both the first driving mechanism (1) and the second driving mechanism (2) can adopt an electric push rod (6) or a cylinder.

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