Zero-gravity zero-wall-leaning multifunctional sofa iron stand

Abstract

The utility model relates to a multifunctional sofa iron stand with zero gravity and zero wall leaning. The multifunctional sofa iron stand comprises a base, a frame, a leg supporting assembly, a backrest assembly and a driving mechanism, a height difference exists between the two ends of the base, and the frame is connected to the base in a sliding mode; in the folded state, the leg supporting assembly is in the folded state and contracts to the end, located at the higher end of the base, of the frame, and one end of the leg supporting assembly is fixedly connected to the end, located at the higher end of the base, of the frame. The backrest assembly is in a folded state and contracts to the end, located at the lower end of the base, of the frame, and one end of the backrest assembly is fixedly connected to the end, located at the lower end of the base, of the frame. The driving mechanism is fixedly arranged on the base, the output end of the driving mechanism is arranged towards the leg supporting assembly in a telescopic mode, and one section of the leg supporting assembly is rotationally connected with the output end of the driving mechanism. The zero-gravity zero-wall-leaning multifunctional sofa iron stand disclosed by the utility model has the advantages of simple and stable structure, convenience and smoothness in state conversion and comfort in use.

Description

Technical Field

[0001] The utility model relates to the technical field of chair frames, in particular to a multifunctional sofa iron frame with zero gravity and zero wall support. Background Art

[0002] Existing zero-gravity, zero-wall sofa iron frames mostly use complex linkage rod assemblies to connect the base and the frame respectively, so that when the drive group drives the leg support assembly to unfold and the frame to move, it can ensure that the frame moves upward near the leg support assembly, presenting a zero-gravity state. However, due to too many linkage rods, the drive mechanism needs to drive the leg support assembly, the linkage rod assembly, and the backrest assembly to unfold or rotate at the same time, and the linkage rod assembly is located below the frame, and the distance between it and the output end of the drive mechanism is short. When the drive mechanism drives the linkage rod assembly to rotate, it is very easy to get stuck, affecting the overall state conversion of the chair frame and reducing the user experience of the chair frame. Summary of the invention

[0003] Based on this, the purpose of the utility model is to provide a multifunctional sofa iron frame with zero gravity and zero wall support, which has the advantages of simple and stable structure, convenient and smooth state conversion, and comfortable use.

[0004] A multifunctional sofa iron frame with zero gravity and zero leaning against the wall, comprising a base, a frame, a leg support assembly, a backrest assembly and a driving mechanism; the two ends of the base have a height difference, and the frame is slidably connected to the base; in a retracted state, the leg support assembly is in a folded state and retracted to one end of the frame located at the higher end of the base, and one end of the leg support assembly is fixedly connected to the end of the frame; the backrest assembly is in a folded state and retracted to one end of the frame located at the lower end of the base, and one end of the backrest assembly is fixedly connected to the end of the frame; the driving mechanism is fixedly arranged on the base, and its output end can be telescopically arranged toward the direction of the leg support assembly, and a section of the folded portion of the leg support assembly is rotatably connected to the output end of the driving mechanism.

[0005] The multifunctional sofa iron frame with zero gravity and zero wall support described in the utility model is provided with a height difference at both ends of the base, and the frame is slidably connected to the base, thereby converting the linkage rod structure between the base and the frame into a simpler and more stable sliding structure, so that the state transition of the overall frame during use is more convenient and smooth, and the jamming is reduced; and when the frame slides along the high and low ends of the base, the end close to the leg support assembly is tilted upward to achieve a zero gravity state.

[0006] Furthermore, the base is provided with a first guide groove and a second guide groove; the first guide groove and the second guide groove are located on the same vertical plane, the first guide groove is arranged in the horizontal direction and is close to the backrest assembly, and the second guide groove is arranged obliquely and is close to the leg support assembly; the end of the second guide groove close to the first guide groove is flush with the first guide groove, and the height of the end of the second guide groove away from the first guide groove is higher than the height of the first guide groove; the frame is provided with a guide slide bar that is slidably matched with the first guide groove and the second guide groove, so that the frame is more stable and not easy to fall out when sliding along the base.

[0007] Furthermore, the guide slide bar is located at one end of the frame close to the backrest assembly, and its length is one third to one half of the length of the frame. This can ensure the support force of the leg support assembly in the open state and shorten the length of the base to save costs.

[0008] Furthermore, a first sliding member and a second sliding member are rotatably connected to the guide slide bar, the first sliding member is clamped in the first guide groove, and the second sliding member is clamped in the second guide groove.

[0009] Furthermore, the first sliding member and the second sliding member are in the shape of long strips, and the upper and lower end surfaces thereof are respectively matched with the upper and lower inner side surfaces of the first guide groove or the second guide groove. This arrangement can reduce the bouncing of the first sliding member and the second sliding member when sliding in the first guide groove and the second guide groove, so that the frame slides along the base more stably.

[0010] Furthermore, the distance between the first sliding member and the upper and lower end surfaces of the frame is smaller than the distance between the second sliding member and the upper and lower end surfaces of the frame. In this way, the frame remains tilted in a non-zero gravity state, thereby improving the user experience of the frame.

[0011] Further, the leg support assembly includes a first link, a second link, a third link and a fourth link; one end of the first link is hinged to the frame, and the other end of the first link is hinged to one end of the second link; one end of the third link is hinged to the frame and is located below the first link, and the other end of the third link is hinged to one end of the fourth link; the middle part of the fourth link is hinged to the middle part of the first link.

[0012] Further, the leg support assembly also includes a first leg support frame, a second leg support frame, a third leg support frame, a first support connecting rod and a second support connecting rod; one end of the first leg support frame is hinged to the middle part of the fourth connecting rod, the other end of the first leg support frame is hinged to one end of the first support connecting rod, and the other end of the first support connecting rod is hinged to the middle part of the second connecting rod; the second leg support frame is respectively hinged to one end of the fourth connecting rod away from the third connecting rod, the middle part of the second connecting rod, and one end of the second support connecting rod; the third leg support frame is respectively hinged to one end of the second connecting rod away from the first connecting rod and one end of the second support connecting rod away from the third leg support frame.

[0013] Further, the backrest assembly includes a first linkage rod, a second linkage rod, a third linkage rod, a fourth linkage rod, a fifth linkage rod and a backrest member; one end of the first linkage rod is hinged to an end of the base away from the leg support assembly, and the other end of the first linkage rod is hinged to one end of the second linkage rod; the other end of the second linkage rod is respectively hinged to the third linkage rod, the fourth linkage rod and an end of the frame away from the leg support assembly; one end of the fifth linkage rod is hinged to the frame, and is located on the side of the second linkage rod close to the leg support assembly; the middle part of the fifth linkage rod is hinged to the end of the fourth linkage rod away from the second linkage rod; one end of the backrest member is hinged to an end of the fifth linkage rod away from the frame, and the other end of the backrest member is hinged to an end of the third linkage rod away from the second linkage rod.

[0014] Furthermore, the angle between the backrest and the upper and lower end surfaces of the frame is an obtuse angle, so that the frame and the backrest assembly are more comfortable to use in a non-zero gravity state.

[0015] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the multifunctional sofa iron frame with zero gravity and zero wall leaning in the present application in a sitting state;

[0017] Figure 2 This is an exploded view of the multifunctional sofa iron frame with zero gravity and zero wall leaning in the present application in a sitting state;

[0018] Figure 3 This is a structural schematic diagram of the zero-gravity, zero-wall-leaning multifunctional sofa iron frame of the present application in a lying state;

[0019] Figure 4 This is a schematic structural diagram of the zero-gravity, zero-wall-support multifunctional sofa iron frame of the present application in a zero-gravity state.

[0020] In the figure:

[0021] 1-base; 11-guide groove; 111-first guide groove; 112-second guide groove;

[0022] 2-frame; 21-guide slide bar; 22-first slide member; 23-second slide member;

[0023] 3-leg support assembly; 31-first connecting rod; 32-second connecting rod; 33-third connecting rod; 34-fourth connecting rod; 35-first leg support frame; 36-second leg support frame; 37-third leg support frame; 38-first support connecting rod; 39-second support connecting rod;

[0024] 4-backrest assembly; 41-second fixing member; 42-first linkage rod; 43-second linkage rod; 44-third linkage rod; 45-fourth linkage rod; 46-fifth linkage rod; 47-backrest member;

[0025] 5-driving mechanism; 51-driving motor; 52-first rotating rod; 53-second rotating rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1 The present application provides a zero-gravity, zero-wall-support multifunctional sofa iron frame, comprising a base 1, a frame 2, a leg support assembly 3, a backrest assembly 4 and a driving mechanism 5.

[0030] The frame 2 is slidably connected to the base 1; in the folded state, the leg support assembly 3 is in a folded state and retracted at one end of the frame 2, and one end of the leg support assembly 3 is fixedly connected to one end of the frame 2; the backrest assembly 4 is in a folded state and retracted at the other end of the frame 2, and one end of the backrest assembly 4 is fixedly connected to the other end of the frame 2; the driving mechanism 5 is fixedly arranged on the base 1, and one section of a folding portion of the leg support assembly 3 is rotatably connected to the output end of the driving mechanism 5; when opened, the driving mechanism 5 is started, driving the leg support assembly 3 to unfold, and the leg support assembly 3 unfolds in a direction away from the frame 2, and the leg support assembly 3 drives the frame 2 to slide along the base 1, and the backrest assembly 4 unfolds accordingly, realizing the transformation of the seat from a sitting state to a lying state with zero gravity and zero leaning against the wall.

[0031] In this embodiment, the base 1 is U-shaped, and the two arms of the U-shaped are arranged upwardly inclined near the U-shaped opening section, the frame 2 slides along the two arms of the U-shaped base 1, and the leg support assembly 3 is located at one end of the frame 2 near the U-shaped opening. Therefore, when the frame 2 slides along the base 1, the transition between the sitting state and the lying state with zero gravity and zero leaning against the wall is achieved. In other embodiments, the base 1 can be annular or rectangular, etc.

[0032] Furthermore, a guide groove 11 is provided on the base 1, and the guide groove 11 includes a first guide groove 111 and a second guide groove 112, wherein the first guide groove 111 is provided on the horizontal sections of the two arms of the base 1, and the second guide groove 112 is provided on the upward inclined section, and a guide slide bar 21 is provided at the lower end of the frame 2, one end of which is slidably matched with the first guide groove 111, and the other end of which is slidably matched with the second guide groove 112.

[0033] In this embodiment, the first guide groove 111 and the second guide groove 112 are provided on the base 1, and the guide slide bar 21 is provided on the frame 2, so that the frame 2 is more stable and not easy to fall out when sliding along the base 1. In other embodiments, the first guide groove 111 and the second guide groove 112 are provided on the frame 2, and the guide slide bar 21 is provided on the base 1.

[0034] Further, the guide slide bar 21 is located at one end of the frame 2 close to the backrest assembly 4, and its length is one third to one half of the length of the frame 2. This arrangement can not only ensure the support force of the leg support assembly 3 in the open state, but also shorten the length of the base 1 to save costs. Further, the guide slide bar 21 is provided with a first slide 22 and a second slide 23 at intervals, the first slide 22 is clamped in the first guide groove 111, and the second slide 23 is clamped in the second guide groove 112. In this embodiment, the first slide 22 and the second slide 23 are long and block-shaped, and the first slide 22 and the second slide 23 are rotatably connected to the guide slide bar 21, and the upper and lower end surfaces of the first slide 22 and the second slide 23 are respectively matched with the upper and lower inner side surfaces of the first guide groove 111 and the second guide groove 112. This arrangement can reduce the jumping of the first slide 22 and the second slide 23 when sliding in the first guide groove 111 and the second guide groove 112, so that the frame 2 slides along the base 1 more stably. In other embodiments, the sliding member may be a pulley.

[0035] Furthermore, the distance from the first sliding member 22 to the lower end surface of the frame 2 is smaller than the distance from the second sliding member 23 to the lower end surface of the frame 2 , so that the frame 2 remains tilted in a non-zero gravity state, thereby improving the user experience of the frame 2 .

[0036] Furthermore, the leg support assembly 3 includes a first fixing member, a first connecting rod 31, a second connecting rod 32, a third connecting rod 33, a fourth connecting rod 34, a first leg support frame 35, a second leg support frame 36, a third leg support frame 37, a first support connecting rod 38 and a second support connecting rod 39.

[0037] The first fixing member is fixedly connected to the frame 2, and is generally V-shaped, with one side of the V-shaped member flush with the frame 2, and the other side of the V-shaped member located below the frame 2, and the V-shaped opening faces away from the backrest assembly 4. One end of the first connecting rod 31 is hinged to one side of the V-shaped member of the first fixing member, and the other end of the first connecting rod 31 is hinged to one end of the second connecting rod 32. One end of the third connecting rod 33 is hinged to the other side of the V-shaped member of the first fixing member, and the other end of the third connecting rod 33 is hinged to one end of the fourth connecting rod 34. The middle part of the fourth connecting rod 34 is hinged to the middle part of the first connecting rod 31.

[0038] One end of the first leg support frame 35 is hinged to the middle of the fourth connecting rod 34, the other end of the first leg support frame 35 is hinged to one end of the first support connecting rod 38, and the other end of the first support connecting rod 38 is hinged to the middle of the second connecting rod 32. The second leg support frame 36 is generally in the shape of an inverted triangle, and a right corner of the inverted triangle of the second leg support frame 36 is hinged to an end of the fourth connecting rod 34 away from the third connecting rod 33, a left corner of the second leg support frame 36 is hinged to one end of the second supporting connecting rod 39, and a lower corner of the second leg support frame 36 is hinged to the middle of the second connecting rod 32. One end of the third leg support frame 37 is hinged to an end of the second connecting rod 32 away from the first connecting rod 31, and an end of the second supporting connecting rod 39 away from the second leg support frame 36 is hinged to the middle of the third leg support frame 37.

[0039] Furthermore, the backrest assembly 4 includes a second fixing member 41 , a first linkage rod 42 , a second linkage rod 43 , a third linkage rod 44 , a fourth linkage rod 45 , a fifth linkage rod 46 and a backrest member 47 .

[0040] The second fixing member 41 is fixed to one end of the frame 2 away from the leg support assembly 3. One end of the first linkage rod 42 is hinged to the base 1 and is located at the end of the base 1 away from the leg support assembly 3. The other end of the first linkage rod 42 is hinged to one end of the second linkage rod 43. The other end of the second linkage rod 43 is hinged to one end of the third linkage rod 44, one end of the fourth linkage rod 45 and one end of the second fixing member 41 away from the leg support assembly 3. One end of the fifth linkage rod 46 is hinged to one end of the second fixing member 41 close to the leg support assembly 3, and the middle part of the fifth linkage rod 46 is hinged to one end of the fourth linkage rod 45 away from the second linkage rod 43. One end of the backrest member 47 is hinged to one end of the fifth linkage rod 46 away from the second fixing member 41, and the other end of the backrest member 47 is hinged to one end of the third linkage rod 44 away from the second linkage rod 43.

[0041] Furthermore, the driving mechanism 5 includes a driving motor 51, a first rotating rod 52 and a second rotating rod 53. The driving motor 51 is fixedly mounted on the base 1, and is located at one end of the base 1 close to the backrest assembly 4, and its output end is arranged toward the leg support assembly 3. The first rotating rod 52 is hinged to the first connecting rod 31. One end of the second rotating rod 53 is rotatably connected to the output end of the driving motor 51, and the other end of the second rotating rod 53 is rotatably connected to one end of the first rotating rod 52 away from the first connecting rod 31.

[0042] During actual operation, the frame of the present application has three states: a sitting state, a lying state, and a lying state with zero gravity and zero leaning against the wall.

[0043] The initial state is a sitting state, the leg support assembly 3 is retracted below the frame 2, the first sliding member 22 is located at the end of the first guide slot 111 away from the leg support assembly 3, and the second sliding member 23 is located at the end of the second guide slot 112 away from the leg support assembly 3. In the present application, in the sitting state, since the distance from the first sliding member 22 to the lower end surface of the frame 2 is smaller than the distance from the second sliding member 23 to the lower end surface of the frame 2, the frame 2 is in an inclined state, and the backrest member 47 is arranged at an obtuse angle to the upper surface of the frame 2, so that the frame 2 and the backrest assembly 4 are more comfortable to use in a non-zero gravity state.

[0044] The driving motor 51 is started, and its output end moves from the end close to the backrest assembly 4 to the end close to the leg support assembly 3, and drives the first connecting rod 31 and the third connecting rod 33 to rotate in the direction away from the backrest assembly 4 through the first rotating rod 52 and the second rotating rod 53, and the second connecting rod 32 and the fourth connecting rod 34 rotate accordingly. Due to the restrictions of the first supporting connecting rod 38, the second supporting connecting rod 39 and the first leg support frame 35, the second leg support frame 36, and the third leg support frame 37, the leg support assembly 3 originally retracted under the frame 2 is gradually unfolded; when the leg support assembly 3 is fully unfolded, it is in a lying state;

[0045] The output end of the driving motor 51 continues to move toward one end of the leg support assembly 3, and drives the frame 2 to move along the guide groove 11 from the end close to the backrest assembly 4 to the end close to the leg support assembly 3 through the first rotating rod 52, the second rotating rod 53 and the leg support assembly 3; in this process, the first sliding member 22 moves in the first guiding groove 111, and the second sliding member 23 moves in the second guiding groove 112, and the end of the frame 2 close to the leg support assembly 3 gradually rises. As the frame 2 moves, the second fixing member 41 pulls the second linkage rod 43 and the fifth linkage rod 46, and the first linkage rod 42, the third linkage rod 44, and the fourth linkage rod 45 rotate accordingly. The two ends of the backrest member 47 are driven by the third linkage rod 44 and the fifth linkage rod 46 to rotate toward the end away from the leg support assembly 3, so that the angle between the backrest member 47 and the upper surface of the frame 2 increases; that is, the lying state of zero gravity. The backrest component 4 is always located on the left side of the end of the base 1 away from the leg support component 3 and does not protrude from the end of the base 1 away from the leg support component 3, that is, the frame has zero wall support.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A multifunctional sofa iron frame with zero gravity and zero wall support, characterized by: It includes a base, a frame, a leg support assembly, a backrest assembly and a driving mechanism; There is a height difference between the two ends of the base, and the frame is slidably connected to the base; in the folded state, the leg support assembly is in a folded state and retracted to the end of the frame located at the higher end of the base, and one end of the leg support assembly is fixedly connected to this end of the frame; the backrest assembly is in a folded state and retracted to the end of the frame located at the lower end of the base, and one end of the backrest assembly is fixedly connected to this end of the frame; the driving mechanism is fixedly arranged on the base, and its output end can be telescopically arranged toward the direction of the leg support assembly, and a section of the folding portion of the leg support assembly is rotatably connected to the output end of the driving mechanism.

2. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 1, characterized in that: The base is provided with a first guide groove and a second guide groove; the first guide groove and the second guide groove are located on the same vertical plane, the first guide groove is arranged in the horizontal direction and is close to the backrest assembly, and the second guide groove is inclined and is close to the leg support assembly; the end of the second guide groove close to the first guide groove is flush with the first guide groove, and the height of the end of the second guide groove away from the first guide groove is higher than the height of the first guide groove; the frame is provided with a guide slide bar that slides with the first guide groove and the second guide groove.

3. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 2 is characterized by: The guide sliding rod is located at one end of the frame close to the backrest assembly, and its length is one third to one half of the length of the frame.

4. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 2 is characterized by: The guide slide bar is rotatably connected with a first slide member and a second slide member. The first slide member is clamped in the first guide groove, and the second slide member is clamped in the second guide groove.

5. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 4 is characterized by: The first sliding member and the second sliding member are in the shape of long strips, and the upper and lower end surfaces thereof are respectively matched with the upper and lower inner side surfaces of the first guide groove or the second guide groove.

6. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 4, characterized in that: The distance from the first sliding member to the upper and lower end surfaces of the frame is smaller than the distance from the second sliding member to the upper and lower end surfaces of the frame.

7. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 1, characterized in that: The leg support assembly includes a first link, a second link, a third link and a fourth link; one end of the first link is hinged to the frame, and the other end of the first link is hinged to one end of the second link; one end of the third link is hinged to the frame and is located below the first link, and the other end of the third link is hinged to one end of the fourth link; the middle part of the fourth link is hinged to the middle part of the first link.

8. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 7, characterized in that: The leg support assembly also includes a first leg support frame, a second leg support frame, a third leg support frame, a first support connecting rod and a second support connecting rod; one end of the first leg support frame is hinged to the middle part of the fourth connecting rod, the other end of the first leg support frame is hinged to one end of the first support connecting rod, and the other end of the first support connecting rod is hinged to the middle part of the second connecting rod; the second leg support frame is respectively hinged to one end of the fourth connecting rod away from the third connecting rod, the middle part of the second connecting rod, and one end of the second support connecting rod; the third leg support frame is respectively hinged to one end of the second connecting rod away from the first connecting rod and one end of the second support connecting rod away from the third leg support frame.

9. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 1, characterized in that: The backrest assembly includes a first linkage rod, a second linkage rod, a third linkage rod, a fourth linkage rod, a fifth linkage rod and a backrest member; one end of the first linkage rod is hinged to an end of the base away from the leg support assembly, and the other end of the first linkage rod is hinged to one end of the second linkage rod; the other end of the second linkage rod is respectively hinged to the third linkage rod, the fourth linkage rod and an end of the frame away from the leg support assembly; one end of the fifth linkage rod is hinged to the frame, and is located on the side of the second linkage rod close to the leg support assembly; the middle part of the fifth linkage rod is hinged to an end of the fourth linkage rod away from the second linkage rod; one end of the backrest member is hinged to an end of the fifth linkage rod away from the frame, and the other end of the backrest member is hinged to an end of the third linkage rod away from the second linkage rod.

10. The multifunctional sofa iron frame with zero gravity and zero wall support according to claim 1, characterized in that: The angle between the backrest component and the upper and lower end surfaces of the frame is an obtuse angle.

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