Zero-gravity zero-wall sofa iron stand structure

Abstract

The utility model relates to a zero-gravity zero-wall sofa iron stand structure which comprises a fixed frame, a movable frame arranged on the fixed frame in a sliding mode, a backrest assembly connected between the fixed frame and the movable frame, a linkage mechanism and a foot support assembly, the linkage mechanism and the foot support assembly are arranged on the movable frame, and the output end of the linkage mechanism is connected with the fixed frame and the foot support assembly. The linkage mechanism can drive the movable frame to move relative to the fixed frame; when the movable frame moves, the foot support assembly and the backrest assembly synchronously stretch or retract in the moving direction of the movable frame. The sofa has the effect of improving the experience of a customer when the sofa is used.

Description

Technical Field

[0001] The present application relates to the field of sofas, and in particular to a zero-gravity zero-wall sofa iron frame structure. Background Art

[0002] The National Aeronautics and Space Administration (NASA) found in an ergonomic study of astronauts in zero gravity that the human knees and heart are at the same level, the angle between the upper torso and thighs is approximately 128 degrees, and the angle between the thighs and calves is approximately 133 degrees. All parts of the human body are in the most relaxed state, which helps to reduce muscle burden and relieve fatigue.

[0003] Patent CN220477293U discloses a functional iron frame, which can make all parts of the human body in the most relaxed state through the extension of the functional iron frame. However, during use, there will be a situation of front and back asynchronism, which will prolong the extension time of the iron frame and give people a poor user experience. Summary of the invention

[0004] In order to improve the customer experience when using a sofa, the present application provides a zero-gravity zero-wall sofa iron frame structure.

[0005] The zero-gravity zero-wall sofa iron frame structure provided by the present application adopts the following technical solution:

[0006] A zero-gravity zero-wall sofa iron frame structure comprises a fixed frame, a movable frame slidably arranged on the fixed frame, a backrest assembly connected between the fixed frame and the movable frame, a linkage mechanism and a footrest assembly arranged on the movable frame, wherein the output ends of the linkage mechanism are respectively connected to the fixed frame and the footrest assembly, and the linkage mechanism can drive the movable frame to move relative to the fixed frame; when the movable frame moves, the footrest assembly and the backrest assembly are synchronously extended or contracted in the moving direction of the movable frame.

[0007] By adopting the above technical solution, the footrest assembly can provide support for the user's feet. During the movement of the movable frame relative to the fixed frame, the footrest assembly will be lifted upward with the second frame, and the support for the user's legs will be improved under the premise of lifting the user's feet; thereby the human knees will move upward; the backrest assembly can support the user's back. During the movement of the movable frame relative to the fixed frame, the backrest mechanism will unfold with the movable frame, so that the human heart moves downward, and the human knees and heart are at the same horizontal line, achieving a zero-gravity sitting state, thereby improving the user experience. At the same time, since the linkage mechanism is in the process of driving the movable frame to move, the footrest assembly and the backrest assembly are extended synchronously, so the switching time of the iron frame from a natural sitting position to a zero-gravity sitting position can be shortened, thereby improving the user experience.

[0008] Optionally, the linkage mechanism includes a driving member, a synchronization rod connected to the driving member, and a linkage assembly fixedly connected to the synchronization rod; the synchronization rod is rotatably arranged on the movable frame, one end of the linkage assembly is connected to the fixed frame, and the other end is connected to the foot rest assembly; when the synchronization rod rotates, the linkage assembly can push the movable frame to move and make the foot rest assembly extend or contract.

[0009] By adopting the above technical solution, the driving member can drive the synchronization rod to rotate, so that the footrest assembly will also unfold while the linkage assembly pushes the movable frame to move, thereby improving the linkage and synchronization of the operating actions between the movable frame and the footrest assembly, and reducing the energy consumption used to drive the footrest assembly to extend or retract.

[0010] Optionally, the linkage assembly includes a linkage rod and a driving part respectively fixed to the synchronization rod, the driving part is fixed to the movable frame, the output end of the driving part can drive the driving part to force the linkage rod to rotate, one end of the linkage rod is connected to the fixed frame, and the other end is connected to the power input end of the foot rest assembly.

[0011] By adopting the above technical solution, the driving member can push the driving part to rotate the synchronization rod, thereby allowing the linkage rod to swing. The linkage rod acts as a force transmission and can simultaneously drive the movement of the movable frame and the expansion or contraction of the footrest assembly.

[0012] Optionally, the output end of the driving member is a gear, and the output end of the driving member is meshed with the driving part.

[0013] By adopting the above technical solution, the volume of the driving member can be reduced through gear transmission, so that the space utilization rate of the iron frame is high, thereby achieving a simple and compact overall structure of the sofa.

[0014] Optionally, the linkage rod includes a first link hinged to the fixed frame, a second link hinged to the first link and away from the fixed frame, and a third link hinged to the second link and away from the first link. One end of the third link away from the second link is hinged to the power input end of the foot rest assembly, and the middle part of the second link is fixedly connected to the synchronization rod.

[0015] By adopting the above technical solution, the second connecting rod is used as the output of power, so that the first connecting rod can push the movement of the movable frame, and the third connecting rod can drive the extension or contraction of the footrest.

[0016] Optionally, the footrest assembly includes a fourth connecting rod hinged to the movable frame, a fifth connecting rod hinged to the movable frame, and a footrest member hinged between the fourth connecting rod and the fifth connecting rod; the movable frame, the fourth connecting rod, the fifth connecting rod and the footrest member form a four-bar mechanism, and the fourth connecting rod is hinged to the third connecting rod as the power output end of the footrest assembly.

[0017] By adopting the above technical solution, the footrest assembly also adopts a connecting rod mechanism to install the footrest member, so that the overall structure of the sofa is simple and compact.

[0018] Optionally, the backrest assembly includes a sixth connecting rod hinged to the fixed frame, a seventh connecting rod hinged to the fixed frame, and a backrest member hinged between the sixth connecting rod and the seventh connecting rod; the fixed frame, the sixth connecting rod, the seventh connecting rod and the backrest member form a four-bar mechanism, and an eighth connecting rod is hinged between the seventh connecting rod and the movable frame.

[0019] By adopting the above technical solution, the backrest assembly adopts a connecting rod mechanism to install the backrest part, so that the overall structure of the sofa is simple and compact.

[0020] Optionally, the fixed frame is provided with a first guide groove, and the movable frame is provided with a first guide block adapted to the first guide groove, and when the first guide block moves from one end to the other end of the first guide groove, the backrest assembly is in an extended or contracted state; when the backrest assembly is in an extended state, the angle between the extension line of the length direction of the eighth connecting rod and the plane where the fixed frame is located is in the range of 125°-135°.

[0021] By adopting the above technical solution, when the sofa is switched from a natural sitting position to a zero-gravity sitting position, the center of gravity of the upper body of the human body can be lowered.

[0022] Optionally, the fixed frame is provided with a second guide groove, and the movable frame is provided with a second guide block adapted to the second guide groove, and when the second guide block moves from one end to the other end of the second guide groove, the foot rest assembly is in an extended or contracted state; when the foot rest assembly is in an extended state, the angle between the extension line of the fourth connecting rod in the length direction and the plane where the foot rest is located is in the range of 130°-140°.

[0023] By adopting the above technical solution, when the sofa switches from a natural sitting position to a zero-gravity sitting position, the center of gravity of the lower body can be raised, and finally the knees and the heart of the human body are roughly in the horizontal line, thereby achieving the effect of zero gravity, making all parts of the human body in the most relaxed state, helping to reduce muscle burden and relieve fatigue.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Since the footrest assembly and the backrest assembly are extended synchronously when the linkage assembly drives the movable frame to move, the switching time of the iron frame from a natural sitting position to a zero-gravity sitting position can be shortened, thereby improving the user experience.

[0026] 2. The unfolding direction of the backrest assembly is the same as the moving direction of the movable frame, so when the backrest assembly is unfolded, it will not interfere with the wall, so that the sofa iron frame can lean against the wall to achieve the effect of zero leaning against the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the state structure of the iron frame structure in a natural sitting position.

[0028] Figure 2 It is a schematic diagram of the state structure of the iron frame structure in zero gravity sitting position.

[0029] Figure 3 It is a partial structural diagram of this application.

[0030] Figure 4 It is a schematic diagram of the angle between the footrest assembly and the backrest assembly when they are unfolded.

[0031] Explanation of the accompanying drawings: 1. fixed frame; 11. movable frame; 12. first guide groove; 13. first guide block; 14. second guide groove; 15. second guide block; 2. linkage mechanism; 21. driving member; 22. synchronization rod; 23. linkage rod; 231. first connecting rod; 232. second connecting rod; 233. third connecting rod; 24. driving part; 3. footrest assembly; 31. fourth connecting rod; 32. fifth connecting rod; 33. footrest member; 4. backrest assembly; 41. sixth connecting rod; 42. seventh connecting rod; 43. eighth connecting rod; 44. backrest member. DETAILED DESCRIPTION

[0032] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", "third", etc. or similar expressions are only used for description and distinction purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components.

[0033] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0034] The embodiment of the present application discloses a zero-gravity zero-wall sofa iron frame structure.

[0035] Example:

[0036] Reference Figure 1 and Figure 2 A zero-gravity zero-wall sofa iron frame structure includes a fixed frame 1, a movable frame 11, a backrest assembly 4, a linkage mechanism 2 and a footrest assembly 3; the fixed frame 1 is connected to the sofa frame as a supporting member of the sofa, the movable frame 11 is slidably connected to the fixed frame 1, the backrest assembly 4 is connected between the movable frame 11 and the fixed frame 1, the linkage assembly and the footrest assembly 3 are arranged on the movable frame 11, the linkage mechanism 2 is arranged on the movable frame 11, and the output end of the linkage mechanism 2 is respectively connected to the fixed frame 1 and the footrest assembly 3, and the linkage mechanism 2 can drive the movable frame 11 to move relative to the fixed frame 1. When the movable frame 11 moves, the footrest assembly 3 and the backrest assembly 4 can be synchronously extended or contracted in the moving direction of the movable frame 11.

[0037] Reference Figure 2 and Figure 3 The fixed frame 1 is provided with a first guide groove 12 and a second guide groove 14 , and the movable frame 11 is fixedly connected with a first guide block 13 and a second guide block 15 .

[0038] The first guide groove 12 is closer to the backrest assembly 4 than the footrest assembly 3. The first guide block 13 is located in the first guide groove 12 and matches the first guide groove 12. The first guide block 13 can slide in the first guide groove 12, thereby realizing the sliding of the movable frame 11 relative to the fixed frame 1.

[0039] Reference Figure 2 and Figure 3 , the second guide groove 14 is closer to the footrest assembly 3 than the backrest assembly 4, the second guide block 15 is located in the second guide groove 14 and matches the second guide groove 14, and the second guide block 15 can slide in the second guide groove 14, so that the movable frame 11 can slide relative to the fixed frame 1. The extension line of the first guide groove 12 intersects with the extension line of the second guide groove 14, so when the linkage assembly drives the movable seat to move, the movable seat can move relative to the fixed seat and tilt, so that the customer can gradually switch from the natural sitting state to the zero-gravity sitting state.

[0040] The linkage mechanism 2 includes a driving member 21, a synchronization rod 22 and a linkage assembly; the linkage assembly includes a linkage rod 23 and a driving portion 24. The driving member 21 is fixedly connected to the movable frame 11. Both ends of the synchronization rod 22 are rotatably connected to the movable frame 11, and the middle part of the linkage rod 23 and the driving portion 24 are fixedly connected to the synchronization rod 22. The driving member 21 is a motor, and the output end of the driving member 21 is a gear, which is meshed with the driving portion 24. The driving member 21 can drive the driving portion 24 to force the synchronization rod 22 to rotate. The rotation of the synchronization rod 22 can rotate the linkage rod 23 fixedly connected to the movable frame 11. One end of the linkage rod 23 is connected to the fixed frame 1, and the other end is connected to the power input end of the footrest assembly 3.

[0041] Reference Figure 2 and Figure 3 When the driving member 21 drives the synchronous rod 22 to rotate, the linkage rod 23 can push the movable frame 11 to move and make the footrest assembly 3 extend or contract. During the movement of the movable frame 11, the backrest assembly 4 will also extend or contract. In the present application, the extension or contraction of the footrest assembly 3 and the backrest assembly 4 is synchronized with the movement of the movable frame 11.

[0042] Reference Figure 2 and Figure 3 The linkage rod 23 includes a first link 231, a second link 232 and a third link 233. The first link 231 is hinged to the fixed frame 1, the second link 232 is hinged to the end of the first link 231 away from the fixed frame 1, the third link 233 is hinged to the second link 232 and away from the end of the first link 231, and the end of the third link 233 away from the second link 232 is hinged to the power input end of the footrest assembly 3. The second link 232 is fixedly connected to the synchronization rod 22 as the middle part of the linkage rod 23. When the synchronization rod 22 rotates, the second link 232 swings and pulls the first link 231 and the third link 233. Since the synchronization rod 22 itself is rotationally connected to the fixed rod, when the synchronization rod 22 rotates, the third link 233 can pull the footrest assembly 3 to extend or contract, and at the same time, the first link 231 can push the movable frame 11 to move the movable frame 11 relative to the fixed frame 1.

[0043] Reference Figure 2 and Figure 3 The foot support assembly 3 includes a fourth link 31, a fifth link 32 and a foot support member 33; one end of the fourth link 31 is hinged to the movable frame 11, and the other end is hinged to the foot support frame; one end of the fifth link 32 is hinged to the movable frame 11, and the other end is also hinged to the movable frame 11; the foot support member 33 is hinged by the fourth link 31 and the fifth link 32, so that the movable frame 11, the fourth link 31, the fifth link 32 and the foot support member 33 form a four-bar mechanism, and the fourth link 31 is hinged to the third link 233 as the power output end of the foot support assembly 3. The third link 233 pulls the fourth link 31 to extend or contract the foot support assembly 3.

[0044] Reference Figure 2 and Figure 3 The backrest assembly 4 includes a sixth connecting rod 41, a seventh connecting rod 42, an eighth connecting rod 43 and a backrest member 44; one end of the sixth connecting rod 41 is hinged to the fixed frame 1, and the other end is hinged to the backrest member 44; one end of the seventh connecting rod 42 is hinged to the fixed frame 1, and the other end is also hinged to the backrest member 44; the backrest member 44 is hinged by the sixth connecting rod 41 and the seventh connecting rod 42, so that the fixed frame 1, the sixth connecting rod 41, the seventh connecting rod 42 and the backrest member 44 form a four-bar mechanism; the eighth connecting rod 43 serves as the power output end of the backrest assembly 4, and the two ends of the eighth connecting rod 43 are respectively hinged to the sixth connecting rod 41 and the movable frame 11. When the movable frame 11 moves, the eighth connecting rod 43 can pull the sixth connecting rod 41, so that the backrest assembly 4 can be extended or contracted synchronously with the movement of the movable frame 11.

[0045] Reference Figure 3 and Figure 4 When the linkage assembly pushes the movable frame 11, the first guide block 13 will move from one end of the first guide groove 12 to the other end, and the backrest assembly 4 will switch from the extended state to the retracted state or from the retracted state to the extended state; when the backrest assembly 4 is in the extended state, the angle between the extension line of the eighth connecting rod 43 in the length direction and the plane where the fixed frame 1 is located is in the range of 125°-135°, and the angle is 128° in the present application; at the same time, the second guide block 15 will move from one end of the second guide groove 14 to the other end, and the footrest assembly 3 will switch from the extended state to the retracted state or from the retracted state to the extended state; when the footrest assembly 3 is in the extended state, the angle between the extension line of the fourth connecting rod 31 in the length direction and the plane where the footrest member 33 is located is in the range of 130°-140°, and the angle is 133° in the present application.

[0046] The implementation principle of the embodiment is as follows: when the sofa iron frame needs to be switched from the natural sitting position to the zero-gravity sitting position, the driving member 21 pushes the synchronous rod 22 to rotate, and while the synchronous rod 22 rotates, the linkage rod 23 will unfold the footrest assembly 3, and the movable frame 11 will also move relative to the fixed frame 1. When the movable frame 11 moves, the backrest assembly 4 will also be pulled by the eighth connecting rod 43 to unfold, so that the backrest assembly 4 and the footrest assembly 3 are synchronously unfolded while the movable frame 11 moves. And because the unfolding direction of the backrest assembly 4 is the same as the moving direction of the movable frame 11, the backrest assembly 4 will not interfere with the wall when unfolding, so the sofa iron frame can be leaned against the wall to achieve the effect of zero leaning against the wall.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application; therefore, according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the above specific implementation modes and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the present invention. Therefore: All equivalent changes made according to the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A zero-gravity zero-wall sofa iron frame structure, characterized by: The invention comprises a fixed frame (1), a movable frame (11) slidably arranged on the fixed frame (1), a backrest assembly (4) connected between the fixed frame (1) and the movable frame (11), and a linkage mechanism (2) and a footrest assembly (3) arranged on the movable frame (11), wherein the output end of the linkage mechanism (2) is respectively connected to the fixed frame (1) and the footrest assembly (3), and the linkage mechanism (2) can drive the movable frame (11) to move relative to the fixed frame (1); when the movable frame (11) moves, the footrest assembly (3) and the backrest assembly (4) are synchronously extended or contracted in the moving direction of the movable frame (11).

2. The zero-gravity zero-wall sofa iron frame structure according to claim 1, characterized in that: The linkage mechanism (2) comprises a driving member (21), a synchronization rod (22) connected to the driving member (21), and a linkage assembly fixedly connected to the synchronization rod (22); the synchronization rod (22) is rotatably arranged on the movable frame (11), one end of the linkage assembly is connected to the fixed frame (1), and the other end is connected to the footrest assembly (3); when the synchronization rod (22) rotates, the linkage assembly can push the movable frame (11) to move and cause the footrest assembly (3) to extend or contract.

3. The zero-gravity zero-wall sofa iron frame structure according to claim 2, characterized in that: The linkage assembly comprises a linkage rod (23) and a driving part (24) respectively fixed to the synchronization rod (22); the driving member (21) is fixed to the movable frame (11); the output end of the driving member (21) can drive the driving part (24) to force the linkage rod (23) to rotate; one end of the linkage rod (23) is connected to the fixed frame (1), and the other end is connected to the power input end of the footrest assembly (3).

4. The zero-gravity zero-wall sofa iron frame structure according to claim 3, characterized in that: The output end of the driving member (21) is a gear, and the output end of the driving member (21) is meshed with the driving portion (24).

5. The zero-gravity zero-wall sofa iron frame structure according to claim 3, characterized in that: The linkage rod (23) comprises a first link (231) hinged to the fixed frame (1), a second link (232) hinged to the first link (231) and away from the fixed frame (1), and a third link (233) hinged to the second link (232) and away from the first link (231); one end of the third link (233) away from the second link (232) is hinged to the power input end of the foot support assembly (3); and the middle part of the second link (232) is fixedly connected to the synchronization rod (22).

6. The zero-gravity zero-wall sofa iron frame structure according to claim 5, characterized in that: The foot support assembly (3) comprises a fourth connecting rod (31) hinged to the movable frame (11), a fifth connecting rod (32) hinged to the movable frame (11), and a foot support member (33) hinged between the fourth connecting rod (31) and the fifth connecting rod (32); the movable frame (11), the fourth connecting rod (31), the fifth connecting rod (32) and the foot support member (33) form a four-bar mechanism, and the fourth connecting rod (31) is hinged to the third connecting rod (233) as a power output end of the foot support assembly (3).

7. The zero-gravity zero-wall sofa iron frame structure according to claim 6, characterized in that: The backrest assembly (4) comprises a sixth connecting rod (41) hinged to the fixed frame (1), a seventh connecting rod (42) hinged to the fixed frame (1), and a backrest member (44) hinged between the sixth connecting rod (41) and the seventh connecting rod (42); the fixed frame (1), the sixth connecting rod (41), the seventh connecting rod (42), and the backrest member (44) form a four-bar mechanism, and an eighth connecting rod (43) is hinged between the seventh connecting rod (42) and the movable frame (11).

8. The zero-gravity zero-wall sofa iron frame structure according to claim 7, characterized in that: The fixed frame (1) is provided with a first guide groove (12), and the movable frame (11) is provided with a first guide block (13) adapted to the first guide groove (12); when the first guide block (13) moves from one end of the first guide groove (12) to the other end, the backrest assembly (4) is in an extended or contracted state; when the backrest assembly (4) is in an extended state, an angle between an extension line of the length direction of the eighth connecting rod (43) and a plane where the fixed frame (1) is located is in a range of 125°-135°.

9. The zero-gravity zero-wall sofa iron frame structure according to claim 7, characterized in that: The fixed frame (1) is provided with a second guide groove (14), and the movable frame (11) is provided with a second guide block (15) adapted to the second guide groove (14); when the second guide block (15) moves from one end of the second guide groove (14) to the other end, the foot support assembly (3) is in an extended or contracted state; when the foot support assembly (3) is in an extended state, an angle between an extension line of the length direction of the fourth connecting rod (31) and a plane where the foot support member (33) is located is in a range of 130°-140°.

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