Zero-gravity sitting-feeling sofa iron stand

Abstract

The utility model discloses a zero-gravity sitting sense sofa iron stand, which comprises a bottom frame, a stretching assembly and a driving assembly, the stretching assembly comprises a connecting rod mechanism, and a seat frame fixing plate, a backrest mounting frame and a foot support mounting frame which are connected through the connecting rod mechanism, and the driving assembly comprises a front large driving pipe and a rear driving pipe which are arranged in parallel; a driving mechanism is hinged to the rear driving pipe, the two ends of the rear driving pipe are movably installed on the connecting rod mechanisms on the two sides, the front large driving pipe is hinged to the output end of the driving mechanism, and the two ends of the front large driving pipe penetrate through the two seat frame fixing plates in a clearance mode and then are hinged to the connecting rod mechanisms on the corresponding sides. The front large driving pipe and the rear driving pipe are suitable for driving the stretching assembly to be adjusted through the driving mechanism, and when the stretching assembly stretches to the limiting position, the seat frame fixing plate forms an included angle of 15-25 degrees relative to the horizontal direction. The two ends of the driving mechanism are movably arranged, so that the structure is simplified, the manufacturing difficulty is reduced, and the production cost is saved while the angle between the seat and the horizontal direction is 15-25 degrees when the seat is in a lying posture state.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent furniture, in particular to an iron frame for a zero-gravity sitting sofa. Background Art

[0002] At present, sofas are suitable for various areas of people's lives, such as offices, living rooms, bedrooms, outdoor places, etc., and are one of the indispensable furniture for people to rest. With the rapid development of the smart home industry, traditional single-function sofas can no longer meet people's needs. In order to adjust the reasonable sitting posture and relieve the discomfort caused by sitting for a long time, zero-gravity sofas have emerged; "zero-gravity state" means that the body pressure is completely released, so that the body is in the most comfortable state. Zero-gravity sofas help to reduce the pressure on the body when using seats, alleviate people's health problems, and subtly affect people's quality of life and work.

[0003] The existing technology is to strictly control the connection point positions between multiple connecting rods and adjust the position of the seat mounting plate through a complex connecting rod structure design to achieve the corresponding seat tilt angle. In the whole posture change process, one end of the driving mechanism performing linear motion is hinged on the fixed cross bar, and only the other end can swing up and down. In order to achieve a specific angle change, higher difficulty requirements are put forward for the specific structure of the connecting rod. When it is realized in production, the manufacturing difficulty is great, and the precision requirements of each component are high, which also increases the production cost invisibly. Utility Model Content

[0004] The purpose of the utility model is to propose a zero-gravity sitting sofa iron frame in view of the deficiencies in the prior art. Both ends of the driving mechanism for linear motion are movably arranged. When the seat is in a lying state, it is 15 to 25 degrees relative to the horizontal direction. At the same time, the overall structure is simplified, the manufacturing difficulty is significantly reduced, and the production cost is saved.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] A zero-gravity sofa iron frame comprises a fixed base frame, extension components relatively arranged on both sides of the base frame and a driving component connected between the two extension components, the extension component comprises a connecting rod mechanism hinged on the base frame and a seat frame fixing plate, a backrest mounting frame and a footrest mounting frame connected by the connecting rod mechanism, the driving component comprises a front large driving tube and a rear driving tube arranged in parallel, a driving mechanism for linear motion is vertically hinged on the rear driving tube, and both ends are movably mounted on the connecting rod mechanisms on both sides, the front large driving tube is hinged to the output end of the driving mechanism, and the two ends respectively pass through the two seat frame fixing plates and are hinged to the connecting rod mechanisms on the corresponding sides, the front large driving tube and the rear driving tube are suitable for driving the extension component to be extended and opened to be recovered and closed through the driving mechanism, and when the extension component is extended to the extreme position, the seat frame fixing plate forms an angle of 15 to 25 degrees relative to the horizontal direction.

[0007] Furthermore, the connecting rod mechanism includes a seat cushion connecting rod assembly, a backrest connecting rod and a footrest connecting rod assembly, the seat cushion connecting rod assembly is connected between the base frame and the seat frame fixing plate, the two ends of the backrest mounting frame are respectively hinged to the seat frame fixing plate and the backrest connecting rod, the other end of the backrest connecting rod is hinged to the seat cushion connecting rod assembly, and the footrest connecting rod assembly is connected between the footrest mounting frame and the seat frame fixing plate and is hinged to the seat cushion connecting rod assembly.

[0008] Furthermore, the seat cushion connecting rod assembly includes a first connecting rod and a second connecting rod hinged on the same side of the base and respectively close to the front and rear ends; the other ends of the first connecting rod and the second connecting rod are respectively hinged to the front and rear parts of the seat frame fixing plate; a fifth connecting rod is hinged between the fourth connecting rod and the middle part of the third connecting rod.

[0009] Furthermore, a sixth connecting rod is fixedly connected to the end of the rear driving tube, and the other end of the sixth connecting rod is hinged to the middle part of the second connecting rod.

[0010] Furthermore, a return spring is provided at the connection end of the fourth connecting rod close to the seat frame fixing plate, and the other end of the return spring is fixedly connected to one end of the seat frame fixing plate close to the top.

[0011] Further, the footrest link assembly includes a seventh link and an eighth link which are relatively arranged and hinged at one end, the footrest mounting frame is fixedly mounted on the seventh link, the other end of the eighth link is hinged to a ninth link and a tenth link in sequence from front to back, the other end of the ninth link is hinged to an eleventh link between the other end of the ninth link and the front end of the seat frame fixing plate, the other end of the tenth link is hinged to a twelfth link, the other end of the twelfth link is hinged to a thirteenth link and a fourteenth link in sequence from front to back and is hinged to the seat frame fixing plate, the other end of the thirteenth link is hinged to a fifteenth link, the other end of the fifteenth link is fixedly connected to the front large driving tube, the other end of the fourteenth link is hinged to a sixteenth link and a seventeenth link in sequence, the middle part of the sixteenth link is hinged to the seat frame fixing plate, and the other end of the seventeenth link is hinged to the middle part of the first link.

[0012] Furthermore, a leg-tow mounting frame is hinged on the upper portion of the tenth connecting rod.

[0013] Furthermore, the driving mechanism is centrally arranged on the rear driving tube.

[0014] Furthermore, the driving mechanism adopts an electric push rod of the KD series, which has a compact structure, sufficient power, and low noise, and is convenient for realizing various morphological changes of the extension component by precisely controlling the electric push rod.

[0015] Furthermore, when the extension assembly is fully opened, the height difference H1 between the backrest mounting frame and the footrest mounting frame is between 200 and 350 mm, and the overall height H between the footrest mounting frame and the base frame is between 550 and 650 mm.

[0016] Furthermore, an intermediate anti-torsion tube arranged parallel to the rear drive tube is fixedly connected between the front ends of the two connecting rod mechanisms.

[0017] By adopting the above technical solution, the utility model has the following beneficial effects:

[0018] (1) The utility model changes the structure of the traditional drive assembly. The drive mechanism is installed on the rear drive tube, and the output end is connected to the front large drive tube. At the same time, the front large drive tube is designed with a large square tube and is installed at the middle drive shaft position of the extension assembly, and the rear drive tube is installed on the connecting rod mechanism, so that both ends of the drive mechanism that performs linear motion are movably arranged. When used in conjunction with the connecting rod structure, it can not only achieve sitting posture adjustment, but also, when the extension limit position, that is, the lying state, the seat is 15 to 25 degrees relative to the horizontal direction, which simplifies the overall structure, significantly reduces the manufacturing difficulty, and saves production costs.

[0019] (2) The utility model is connected to the seat cushion, backrest and footrest of the sofa respectively through the seat cushion mounting frame, the backrest mounting frame and the footrest mounting frame, which is convenient for assembly. At the same time, a connecting rod mechanism is used to realize the linkage of various components, with a simple structure and stable transmission.

[0020] (3) The utility model provides a return spring to provide a return elastic force for the extension component during the recovery process, thereby improving the stability of the recovery movement of the extension component.

[0021] (4) The utility model increases the connection points with the footrest of the sofa by adding a leg rest mounting frame, making the footrest more snugly installed.

[0022] (5) The driving mechanism of the utility model is centrally arranged to achieve uniform load and smooth operation.

[0023] (6) The utility model realizes the height difference required by a specific requirement through a reasonable connecting rod structure design, ensuring that the height difference H1 between the backrest and the footrest is between 200 and 350 mm, and the overall height H between the footrest and the ground is between 550 and 650 mm, ensuring a zero-gravity body feeling.

[0024] (7) The utility model is provided with an intermediate anti-torsion tube to further improve the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 It is a schematic diagram of the structure of the utility model in a lying state;

[0027] Figure 2 It is a structural schematic diagram of the seat cushion connecting rod assembly of the utility model;

[0028] Figure 3 This is a schematic diagram of the position structure of the backrest connecting rod and the backrest mounting frame of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the footrest connecting rod assembly of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the utility model in a sitting position;

[0031] Figure 6 This is a dimensioned diagram of the utility model in a lying position.

[0032] The reference numerals in the accompanying drawings are:

[0033] Base frame 1, cross bar 1-1, connecting frame 1-2, extension component 2, seat frame fixing plate 2-1, backrest mounting frame 2-2, footrest mounting frame 2-3, backrest connecting rod 2-4, first connecting rod 2-5, second connecting rod 2-6, third connecting rod 2-7, fourth connecting rod 2-8, fifth connecting rod 2-9, seventh connecting rod 2-10, eighth connecting rod 2-11, ninth connecting rod 2-12, tenth connecting rod 2-13, eleventh connecting rod 2-14, twelfth connecting rod 2-15, thirteenth connecting rod 2-16, fourteenth connecting rod 2-17, fifteenth connecting rod 2-18, sixteenth connecting rod 2-19, seventeenth connecting rod 2-20, sixth connecting rod 2-21, return spring 2-22, leg drag mounting frame 2-23, drive component 3, front large drive tube 3-1, rear drive tube 3-2, drive mechanism 3-3, middle anti-torsion tube 4. DETAILED DESCRIPTION

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] (Example 1)

[0036] like Figures 1 to 6 The iron frame of the zero-gravity sofa shown in the figure comprises a base frame 1, an extension assembly 2 and a driving assembly 3, wherein the base frame 1 is fixedly arranged, two extension assemblies 2 are provided and are relatively arranged on both sides of the base frame 1, and the driving assembly 3 is connected between the two extension assemblies 2. The extension assembly 2 comprises a connecting rod mechanism hinged on the base frame 1 and a seat frame fixing plate 2-1, a backrest mounting frame 2-2 and a footrest mounting frame 2-3 connected and arranged through the connecting rod mechanism, and the driving assembly 3 comprises a front large driving pipe 3-1, a rear driving pipe 3-2 and a driving mechanism 3-3 for linear motion. The front large driving pipe 3-1 and the rear driving pipe 3-2 are arranged parallel and relatively, and the two ends of the front large driving pipe 3-1 respectively pass through the two seat frame fixing plates 2-1 and are hinged to the connecting rod mechanism on the corresponding side, and the two ends of the rear driving pipe 3-2 are respectively movably installed on the connecting rod mechanisms on both sides, and the driving mechanism 3-3 is vertically hinged on the rear driving pipe 3-2, and the output end is hinged to the front large driving pipe 3-1, so that both ends of the driving mechanism for linear motion are movably arranged. The front large drive tube 3-1 and the rear drive tube 3-2 drive the extension assembly through the drive mechanism 3-3 to adjust from extension to opening to retraction and closing. Through the reasonable design of the connecting rod structure, when the extension assembly is extended to the limit position, the seat frame fixing plate is at an angle of 15 to 25 degrees relative to the horizontal direction. Compared with the existing structure, the drive assembly is changed, and the overall adjustment is more flexible through the coordinated use of the drive mechanism and the connecting rod mechanism that are movably set at both ends, simplifying the overall structure, significantly reducing the manufacturing difficulty, and saving production costs.

[0037] Specifically, the base 1 includes two cross bars 1-1 arranged in parallel along the front-back direction and two connecting frames 1-2 respectively connected vertically to the two ends of the two cross bars, forming a rectangular base with a solid structure. The driving mechanism 3-3 is centrally arranged on the rear driving tube 3-2 to achieve uniform load and smooth operation. At the same time, the driving mechanism 3-3 adopts a KD series electric push rod, which has a compact structure, sufficient power, and low noise, and is convenient for realizing various morphological changes of the extension component by accurately controlling the electric push rod.

[0038] The connecting rod mechanism includes a seat cushion connecting rod assembly, a backrest connecting rod 2-4 and a footrest connecting rod assembly, wherein the seat cushion connecting rod assembly includes a first connecting rod 2-5, a second connecting rod 2-6, a third connecting rod 2-7, a fourth connecting rod 2-8 and a fifth connecting rod 2-9, and the footrest connecting rod assembly includes a seventh connecting rod 2-10, an eighth connecting rod 2-11, a ninth connecting rod 2-12, a tenth connecting rod 2-13, an eleventh connecting rod 2-14, a twelfth connecting rod 2-15, a thirteenth connecting rod 2-16, a fourteenth connecting rod 2-17, a fifteenth connecting rod 2-18, a sixteenth connecting rod 2-19 and a seventeenth connecting rod 2-20.

[0039] The first link 2-5 and the second link 2-6 are both hinged on the same connecting frame 1-2 and are close to the front and rear ends respectively. The two ends of the third link 2-7 are respectively hinged to the first link 2-5 and the front part of the seat frame fixing plate 2-1. The two ends of the fourth link 2-8 are respectively hinged to the second link 2-6 and the rear part of the seat frame fixing plate 2-1. The two ends of the fifth link 2-9 are respectively hinged to the middle part of the fourth link 2-8 and the third link 2-7. The end of the rear drive tube 3-2 is fixedly connected with the sixth link 2-21, and the other end of the sixth link 2-21 is hinged to the middle part of the second link 2-6, so as to realize the movable connection between the rear drive tube 3-2 and the connecting rod mechanism.

[0040] The two ends of the bottom of the backrest mounting frame 2-2 are respectively hinged to the seat frame fixing plate 2-1 and the backrest connecting rod 2-4, and the other end of the backrest connecting rod 2-4 is hinged to the fourth connecting rod 2-8.

[0041] The seventh link 2-10 and the eighth link 2-11 are arranged opposite to each other and are hinged at the front ends, wherein the foot support mounting frame 2-3 is fixedly mounted on the seventh link 2-10, the other end of the eighth link 2-11 is hinged to the ninth link 2-12 and the tenth link 2-13 from front to back, and the other end of the ninth link 2-12 is hinged to the eleventh link 2-14 and the front end of the seat frame fixing plate 2-1 in sequence. The other end of the tenth connecting rod 2-13 is hinged to the twelfth connecting rod 2-15, and the other end of the twelfth connecting rod 2-15 is hinged to the thirteenth connecting rod 2-16, the fourteenth connecting rod 2-17 and the seat frame fixing plate 2-1 in sequence from front to back, the other end of the thirteenth connecting rod 2-16 is hinged to the fifteenth connecting rod 2-18, and the other end of the fifteenth connecting rod 2-18 is fixedly connected to the front large driving pipe 3-1, and the other end of the fourteenth connecting rod 2-17 is hinged to the sixteenth connecting rod 2-19 and the seventeenth connecting rod 2-20 in sequence. The middle part of the sixteenth connecting rod 2-19 is hinged to the seat frame fixing plate 2-1, and the other end of the seventeenth connecting rod 2-20 is hinged to the middle part of the first connecting rod 2-5.

[0042] The seat cushion mounting frame 2-1, the backrest mounting frame 2-2 and the footrest mounting frame 2-3 are respectively connected to the seat cushion, backrest and footrest of the sofa, which is convenient for assembly. At the same time, a connecting rod mechanism is used to realize the linkage of various components, so that the sofa can be freely switched between sitting position, TV position and lying position, with a simple structure and stable transmission. The front large driving tube 3-1 is used to raise and lower the middle part of the seat frame fixing plate 2-1 to realize the tilt angle switching of the seat frame fixing plate 2-1 during the posture change of the iron frame, which can more easily realize the angle of 15 to 25 degrees with the horizontal direction in the lying state. Compared with the existing method that completely relies on the connecting rod mechanism to realize the angle tilt, it has higher reliability and simpler structure.

[0043] In order to improve the reliability of the extension component during the recovery process, this embodiment provides a return spring 2-22 at the connection end of the fourth connecting rod 2-8 close to the seat frame fixing plate 2-1, and the other end of the return spring 2-22 is fixedly connected to one end of the seat frame fixing plate 2-1 close to the top, thereby providing a return elastic force for the extension component during the recovery process.

[0044] In order to ensure that the sofa leg rest always keeps in close contact with the iron frame in the switching state, in this embodiment, a leg rest mounting frame 2-23 is hinged on the tenth connecting rod 2-13, thereby increasing the connection points with the footrest of the sofa, making the footrest installation more close.

[0045] In order to improve the overall structural stability of the sofa iron frame, in this embodiment, an intermediate anti-torsion tube 4 arranged parallel to the rear driving tube 3-2 is fixedly connected between the two first connecting rods 2-5 to prevent the extension components 2 on both sides from twisting and improve the overall structural stability.

[0046] This embodiment changes the structure of the traditional drive component, installs the drive mechanism 3-3 on the rear drive tube 3-2, and the output end is connected to the front large drive tube 3-1. At the same time, the front large drive tube 3-1 and the rear drive tube 3-2 are both installed on the connecting rod mechanism, so that both ends of the drive mechanism 3-3 that performs linear motion are movably arranged. When used in conjunction with the connecting rod structure, it can not only achieve sitting posture adjustment, but also when the extended limit position, that is, the lying state, is achieved, that is, when the extension component is fully opened, the height difference H1 between the backrest and the footrest is between 200 and 350 mm, and the overall height H: of the footrest to the ground is between 550 and 650 mm, so that the structure is in a zero gravity state, and the seat is at an angle A of 15 to 25° relative to the horizontal direction, which simplifies the overall structure, significantly reduces the manufacturing difficulty, and saves production costs.

[0047] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero-gravity sofa iron frame, characterized by: It includes a fixed base frame, an extension component relatively arranged on both sides of the base frame, and a driving component connected between the two extension components, the extension component includes a connecting rod mechanism hinged on the base frame and a seat frame fixing plate, a backrest mounting frame and a footrest mounting frame connected by the connecting rod mechanism, the driving component includes a front large driving tube and a rear driving tube arranged in parallel, the rear driving tube is vertically hinged with a driving mechanism for linear motion, and the two ends of the rear driving tube are respectively movably mounted on the connecting rod mechanisms on both sides, the front large driving tube is hinged to the output end of the driving mechanism, and the two ends of the front large driving tube are respectively hinged to the connecting rod mechanisms on the corresponding sides after gaps pass through the two seat frame fixing plates, the front large driving tube and the rear driving tube are suitable for driving the extension component to be extended and opened to be recovered and closed through the driving mechanism, and when the extension component is extended to the extreme position, the seat frame fixing plate forms an angle of 15-25° with respect to the horizontal direction.

2. The zero-gravity sofa iron frame according to claim 1, characterized in that: The connecting rod mechanism includes a seat cushion connecting rod assembly, a backrest connecting rod and a footrest connecting rod assembly. The seat cushion connecting rod assembly is connected between the base frame and the seat frame fixing plate, the two ends of the backrest mounting frame are respectively hinged to the seat frame fixing plate and the backrest connecting rod, the other end of the backrest connecting rod is hinged to the seat cushion connecting rod assembly, and the footrest connecting rod assembly is connected between the footrest mounting frame and the seat frame fixing plate and is hinged to the seat cushion connecting rod assembly.

3. The zero-gravity sofa iron frame according to claim 2, characterized in that: The seat cushion connecting rod assembly includes a first connecting rod and a second connecting rod hinged on the same side of the base and close to the front and rear ends respectively, a third connecting rod and a fourth connecting rod are hinged between the other ends of the first connecting rod and the second connecting rod and the front and rear of the seat frame fixing plate respectively, and a fifth connecting rod is hinged between the fourth connecting rod and the middle part of the third connecting rod.

4. The zero-gravity sofa iron frame according to claim 3, characterized in that: The end of the rear driving pipe is fixedly connected with a sixth connecting rod, and the other end of the sixth connecting rod is hinged to the middle part of the second connecting rod.

5. The zero-gravity sofa iron frame according to claim 3, characterized in that: A return spring is provided at the connection end of the fourth connecting rod close to the seat frame fixing plate, and the other end of the return spring is fixedly connected to one end of the seat frame fixing plate close to the top.

6. The zero-gravity sofa iron frame according to claim 3, characterized in that: The footrest link assembly includes a seventh link and an eighth link which are relatively arranged and hinged at one end. The footrest mounting frame is fixedly mounted on the seventh link. The other end of the eighth link is hinged to a ninth link and a tenth link in sequence from front to back. The other end of the ninth link is hinged to an eleventh link between the other end of the ninth link and the front end of the seat frame fixing plate. The other end of the tenth link is hinged to a twelfth link. The other end of the twelfth link is hinged to a thirteenth link and a fourteenth link in sequence from front to back and is hinged to the seat frame fixing plate. The other end of the thirteenth link is hinged to a fifteenth link. The other end of the fifteenth link is fixedly connected to a front large driving pipe. The other end of the fourteenth link is hinged to a sixteenth link and a seventeenth link in sequence. The middle part of the sixteenth link is hinged to the seat frame fixing plate. The other end of the seventeenth link is hinged to the middle part of the first link.

7. The zero-gravity sofa iron frame according to claim 6, characterized in that: The upper part of the tenth connecting rod is hinged with a leg-tow mounting frame.

8. The zero-gravity sofa iron frame according to claim 1, characterized in that: The drive mechanism is centrally arranged on the rear drive tube.

9. The zero-gravity sofa iron frame according to claim 1, characterized in that: When the extension assembly is fully opened, the height difference H1 between the backrest mounting frame and the footrest mounting frame is between 200 and 350 mm, and the overall height H of the footrest mounting frame and the base frame is between 550 and 650 mm.

10. The zero-gravity sofa iron frame according to claim 1, characterized in that: An intermediate anti-torsion tube arranged parallel to the rear driving tube is fixedly connected between the front ends of the two connecting rod mechanisms.

Images