seating

Abstract

This application provides a seating arrangement. The seating arrangement includes a main footrest mechanism and a secondary footrest mechanism. The main footrest mechanism includes a main footrest assembly and a main footrest pad, and the secondary footrest mechanism includes a secondary footrest assembly and a secondary footrest pad. The main footrest pad is mounted on top of the main footrest assembly, and the secondary footrest pad is mounted on top of the secondary footrest assembly. The horizontal plane at the highest point of the main footrest mechanism is a first plane, and the horizontal plane at the highest point of the secondary footrest mechanism is a second plane. When the seating arrangement is in a TV position, the first plane is located above the second plane. The height increase of the first plane relative to the second plane can be used to place shoe heels, thereby allowing the main footrest pad supporting the user's heels to raise the heels, straightening the leg and improving user comfort.

Description

Technical Field

[0001] This application relates to the field of furniture technology, and more particularly to a seating furniture. Background Technology

[0002] In the sofa furniture industry, adjustable leg structures have been widely used in functional sofa design, with most achieving height adjustment between the large and small legs through a linkage mechanism. However, existing designs mostly focus on optimizing the linkage structure, lacking consideration for application scenarios where upholstery is necessary in actual use.

[0003] In addition, in practical applications, for users who are taller than 180cm, there will be a height difference between their calves and heels. This height difference, where the smaller footrest is lower than the larger footrest, will force users to adopt an unnatural knee-bending posture, which will lead to obstructed blood circulation and increased sitting fatigue, affecting the user's comfort.

[0004] Therefore, it is necessary to design a seating system that solves the aforementioned technical problems. Utility Model Content

[0005] This application provides a seating arrangement that improves user comfort.

[0006] According to an embodiment of this specification, a seat is provided, which includes a main footrest mechanism and a secondary footrest mechanism. The main footrest mechanism includes a main footrest assembly and a main footrest pad, and the secondary footrest mechanism includes a secondary footrest assembly and a secondary footrest pad. The main footrest pad is installed on the top of the main footrest assembly, and the secondary footrest pad is installed on the top of the secondary footrest assembly.

[0007] Wherein, the horizontal plane at the highest point of the main footrest mechanism is the first plane, and the horizontal plane at the highest point of the secondary footrest mechanism is the second plane; when the seat is in the TV posture state, the first plane is located above the second plane.

[0008] Furthermore, the horizontal plane at the highest point of the main footrest assembly is the third plane, the horizontal plane at the highest point of the secondary footrest assembly is the fourth plane, the horizontal plane at the highest point of the main footrest pad is the fifth plane, and the horizontal plane at the highest point of the secondary footrest pad is the sixth plane; when the seat is in the TV posture state, the third plane is located below the fourth plane, and the fifth plane is located above the sixth plane.

[0009] Furthermore, the horizontal plane at the highest point of the main footrest assembly is the third plane, the horizontal plane at the highest point of the secondary footrest assembly is the fourth plane, the horizontal plane at the highest point of the main footrest is the fifth plane, and the horizontal plane at the highest point of the secondary footrest is the sixth plane; when the seat is in the TV posture state, the third plane is located above the fourth plane, and the fifth plane is located above the sixth plane.

[0010] Furthermore, it also includes a footrest extension assembly; the main footrest assembly includes a main support plate, a linkage rod, and an extension rod; one end of the main support plate is used to support the user's foot; the other end is connected to one end of the extension rod; both ends of the linkage rod are respectively connected to the main support plate and the secondary footrest assembly, and the other end of the extension rod is connected to the footrest extension assembly.

[0011] Furthermore, the linkage rod includes a first linkage part connected to the main support plate and a second linkage part connected to the secondary foot assembly, wherein the first linkage part and the second linkage part form an obtuse angle.

[0012] Furthermore, when the seat is in the TV posture state, along the first direction, the first linkage extends away from the secondary footrest assembly, and the angle between the first linkage and the horizontal plane is α, where α ranges from 10° to 15°.

[0013] Furthermore, the included angle between the first linkage part and the second linkage part is b, and the range of b is 155°-165°;

[0014] The length of the first linkage part is greater than the length of the second linkage part.

[0015] Furthermore, when the seat is in the TV posture state, along the first direction, the first linkage extends away from the secondary footrest assembly, and the angle between the first linkage and the horizontal plane is c, where c ranges from 25° to 35°.

[0016] Furthermore, the included angle between the first linkage part and the second linkage part is d, and the range of d is 100°-110°;

[0017] The length of the first linkage part is greater than the length of the second linkage part.

[0018] Furthermore, the main support plate includes a first support portion and a second support portion, and the connection point between the first support portion and the second support portion is connected to the linkage rod; the first support portion and the second support portion form an obtuse angle.

[0019] Furthermore, the secondary foot rest assembly includes a secondary support plate and a secondary foot rest connecting rod; the two ends of the secondary foot rest connecting rod are respectively connected to the secondary support plate and the extension connecting rod and are positioned between the two.

[0020] Furthermore, the footrest extension assembly includes a first link, a second link, a third link, and a fourth link. The two ends of the first link are respectively connected to the sub-support plate and the second link; one end of the third link is connected to the extension link and the sub-support plate, and the other end of the third link is connected to the fourth link; the middle part of the first link is connected to the fourth link.

[0021] Furthermore, the third link bends toward one side of the first link; the third link and the first link partially overlap.

[0022] Furthermore, it also includes a drive assembly; the drive assembly includes a drive member, a first extension link and a second extension link; the two ends of the first extension link are respectively connected to the drive member and the second extension link, and the second extension link is connected to the middle part of the fourth link.

[0023] Furthermore, it also includes a base, a suspension assembly, a seat frame assembly, and a backrest assembly; the suspension assembly is respectively connected to the base and the seat frame assembly, and the backrest assembly and the footrest extension assembly are respectively connected to the front and rear ends of the seat frame assembly.

[0024] Furthermore, when the seat is in a reclining position, the main footrest forms an angle e with the horizontal plane, the angle e being in the range of 5°-20°, and the secondary footrest forms an angle f with the horizontal plane, the angle f being in the range of 7°-23°; the angle c is smaller than the angle d.

[0025] The present application has the following beneficial effects: When the seat is in the TV posture, the first plane is located above the second plane. The height of the first plane relative to the second plane can be used to place the heel, thereby the main footrest supporting the user's heel can raise the heel, straighten the leg and improve the user's sitting comfort.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0028] Figure 1 This is a schematic diagram of the structure of a seat according to an embodiment of this application in a seated state;

[0029] Figure 2 This is a structural schematic diagram of a seating arrangement according to an embodiment of this application in a TV posture state;

[0030] Figure 3 This is a schematic diagram of the structure of a seat according to an embodiment of this application in a reclining position;

[0031] Figure 4 This is a schematic diagram of the linkage rod according to an embodiment of this application;

[0032] Figure 5 This is a structural schematic diagram of a seating arrangement according to another embodiment of this application in a seated position.

[0033] Figure 6 This is a structural schematic diagram of a seating arrangement according to another embodiment of this application in a TV posture state;

[0034] Figure 7 This is a structural schematic diagram of a seat in a reclining position according to another embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the linkage rod according to another embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10-Main foot assembly; 11-Main support plate; 111-First support part; 112-Second support part; 12-Linkage rod; 121-First linkage part; 122-Second linkage part; 13-Extension link; 131-Support block;

[0038] 20-Main foot pad;

[0039] 30 - Secondary foot support assembly; 31 - Secondary support plate; 32 - Secondary foot support linkage;

[0040] 40 pairs of footrests;

[0041] 50 - Footrest extension assembly; 51 - First link; 52 - Second link; 53 - Third link; 54 - Fourth link;

[0042] 60 - Drive assembly; 61 - Drive element; 62 - First extension link; 63 - Second extension link;

[0043] 71-Base; 72-Suspension assembly; 73-Seat frame assembly; 74-Backrest assembly. Detailed Implementation

[0044] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0045] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0046] The embodiments described in this specification will now be described in detail.

[0047] Reference Figure 1 and Figure 5 As shown in the illustration, this application discloses a seating arrangement including a main footrest mechanism, a secondary footrest mechanism, a footrest extension assembly 50, and a drive assembly 60. The main footrest mechanism includes a main footrest assembly 10 and a main footrest pad 20, and the secondary footrest mechanism includes a secondary footrest assembly 30 and a secondary footrest pad 40. The main footrest pad 20 is mounted on top of the main footrest assembly 10, and the secondary footrest pad 40 is mounted on top of the secondary footrest assembly 30.

[0048] The main footrest assembly 10 is rotatably connected to the secondary footrest assembly 30, the secondary footrest assembly 30 is rotatably connected to the footrest extension assembly 50, and the footrest extension assembly 50 is rotatably connected to the drive assembly 60. Therefore, when the drive assembly 60 drives the footrest extension assembly 50 to unfold, the secondary footrest assembly 30 unfolds simultaneously, and the main footrest assembly 10 also unfolds synchronously, realizing the switching of the seating posture. In this embodiment, the seating refers to a sofa. In some cases, the seating can also refer to a chair, stool, etc., and there is no specific limitation here.

[0049] The horizontal plane at the highest point of the main footrest mechanism is the first plane, and the horizontal plane at the highest point of the secondary footrest mechanism is the second plane. Specifically, the horizontal plane at the highest point of the main footrest assembly 10 is the third plane, the horizontal plane at the highest point of the secondary footrest assembly 30 is the fourth plane, the horizontal plane at the highest point of the main footrest pad 20 is the fifth plane, and the horizontal plane at the highest point of the secondary footrest pad 40 is the sixth plane. When the seat is placed on the ground, the aforementioned reference horizontal plane is the ground.

[0050] When the seat is in the TV position, the first plane is above the second plane. The height increase of the first plane relative to the second plane can be used to place the heel, thereby raising the heel of the main footrest that supports the user's heel, straightening the distance between the heel and the lower leg, and improving the user's sitting comfort.

[0051] In one embodiment, in conjunction with reference to Figure 2-4As shown, when the seat is in the TV position, the third plane is below the fourth plane, and the fifth plane is above the sixth plane. In another embodiment, referring to reference... Figure 6-8 As shown, when the seat is in the TV position, the third plane is above the fourth plane, and the fifth plane is above the sixth plane.

[0052] The main footrest assembly 10 includes a main support plate 11, a linkage rod 12, and an extension link 13. The main support plate 11 includes a first support portion 111 and a second support portion 112. The first support portion 111 extends away from the secondary footrest assembly 30, and the main footrest pad 20 is mounted on the first support portion 111. In this way, interference between the main footrest pad 20 and the secondary footrest assembly 30 and the secondary footrest pad 40 can be avoided during the switching of the seating posture.

[0053] The first support part 111 and the second support part 112 form an obtuse angle, thereby raising the first support part 111 away from the ground and controlling the height difference between the first plane and the second plane, so as to raise the user's heel placed on the main support plate 11.

[0054] The linkage 12 includes a first linkage part 121 and a second linkage part 122. The connection point between the first support part 111 and the second support part 112 is connected to the first linkage part 121. The second linkage part 122 is connected to the secondary foot rest assembly 30.

[0055] In one embodiment, when the seat is in the TV position, the first linkage 121 extends away from the secondary footrest assembly 30 along the first direction. The angle between the first linkage 121 and the horizontal plane is α, where α ranges from 10° to 15°. Thus, the first linkage 121 is substantially parallel to the horizontal plane, reducing the height of the connection point between the first support 111 and the second support 112. This, in turn, lowers the height of the secondary footrest assembly 30, ensuring that the third plane is below the fourth plane when the seat is in the TV position.

[0056] The included angle between the first linkage part 121 and the second linkage part 122 is b, and the range of b is 155°-165°. Furthermore, the length of the first linkage part 121 is greater than the length of the second linkage part 122. Thus, the main support plate 11 fixed to the first linkage part 121 can be arranged away from the linkage rod 12, avoiding interference between their movements while ensuring sufficient distance between the heel and lower leg, allowing the user to better support themselves on the main footrest assembly 10 and the secondary footrest assembly 30.

[0057] In another embodiment, when the seat is in the TV position, the first linkage 121 extends away from the secondary footrest assembly 30 along the first direction. The angle between the first linkage 121 and the horizontal plane is c, where c ranges from 25° to 35°. Thus, the extension of the first linkage 121 away from the horizontal plane raises the height of the connection point between the first support 111 and the second support 112, thereby increasing the height of the secondary footrest assembly 30 and ensuring that the third plane is above the fourth plane when the seat is in the TV position.

[0058] The included angle between the first linkage part 121 and the second linkage part 122 is d, where d ranges from 100° to 110°. Furthermore, the length of the first linkage part 121 is greater than the length of the second linkage part 122. Thus, the main support plate 11 fixed to the first linkage part 121 can be positioned away from the linkage rod 12, avoiding interference between their movements while ensuring sufficient distance between the heel and lower leg, allowing the user to better support themselves on the main footrest assembly 10 and the secondary footrest assembly 30.

[0059] The two ends of the extension link 13 are connected to the main support plate 11 and the foot extension assembly 50, respectively. The extension link 13 is provided with a support block 131. When the first linkage part 121 abuts against the support block 131, it can help to disperse the pressure on the linkage rod 12 and improve the load-bearing capacity of the main foot assembly 10.

[0060] The secondary footrest assembly 30 includes a secondary support plate 31 and a secondary footrest connecting rod 32. Both ends of the secondary footrest connecting rod 32 are connected to the secondary support plate 31 and the linkage rod 12, respectively. The middle portion of the extension connecting rod 13 is bent inwards towards the seat, and the space formed by the bend accommodates the secondary footrest connecting rod 32, placing the secondary footrest connecting rod 32 between the secondary support plate 31 and the extension connecting rod 13. The "inner side" refers to the inner side of the seat.

[0061] The main footrest 20 is a soft-padded structure wrapped around the main support plate 11, and the secondary footrest 40 is a soft-padded structure wrapped around the secondary support plate 31. Both are filled with at least one of high-density polyurethane foam, memory foam composite layer, or sponge, providing comfort while dynamically allowing for deformation of the main footrest 20 and secondary footrest 40. The surface of the soft padding is covered with breathable or scratch-resistant leather consistent with the seating.

[0062] In the lying position, the main footrest 20 forms an angle e with the horizontal plane, ranging from 5° to 20°, while the secondary footrest 40 forms an angle f with the horizontal plane, ranging from 7° to 23°. Angle e is smaller than angle f. This design ensures that, in the lying position, the pressure of the calf on the secondary footrest 40 is greater than the pressure of the heel on the main footrest 20, resulting in a larger deformation of the secondary footrest 40. This ensures that, in the lying position, the first plane is positioned above the second plane.

[0063] Specifically, when the seat is in a reclining position, the pressure exerted by the user's heel on the main footrest 20 ranges from 5 kPa to 18 kPa, and the pressure exerted by the lower leg on the secondary footrest 40 ranges from 12 kPa to 35 kPa.

[0064] In addition, when the seat is in a reclining position, the height difference between the horizontal plane where the highest point of the user's heel is located and the horizontal plane where the highest point of the lower leg is located ranges from 2.5cm to 3.1cm, and the height difference between the first plane and the second plane ranges from 3cm to 4.5cm. The relatively high height difference between the first plane and the second plane can withstand the deformation caused by the pressure of the user's legs and heels, so as to meet the height difference range between the horizontal plane where the highest point of the user's heel is located and the horizontal plane where the highest point of the lower leg is located when sitting.

[0065] In this embodiment, the main footrest 20 and the secondary footrest 40 are filled with soft padding of the same material. By increasing the filling thickness of the secondary footrest 40, the height difference between the first plane and the second plane is made to be between 3cm and 4.5cm, thereby meeting the deformation requirements. At the same time, it ensures that the height difference between the first plane and the second plane can accommodate the heel, preventing the heel from causing the lower leg to bend upwards.

[0066] In some cases, this embodiment may also increase the density of the filling in the secondary footrest 40 or the hardness of the filling material to reduce the deformation of the secondary footrest 40. This can reduce the filling thickness of the secondary footrest 40, that is, reduce the height difference between the first plane and the second plane, so that the height difference is close to the height difference between the horizontal plane where the highest point of the user's heel is located and the horizontal plane where the highest point of the calf is located.

[0067] When the seat is in the TV position, the pressure exerted by the user's heel on the main footrest 20 ranges from 8 kPa to 25 kPa, while the pressure exerted by the calf on the secondary footrest 40 ranges from 15 kPa to 30 kPa. At this time, the height difference between the horizontal plane where the highest point of the user's heel is located and the horizontal plane where the highest point of the calf is located ranges from 1.5 cm to 2.5 cm, as does the height difference between the first and second planes. The advantage of this design is that the pressure exerted by the user on the main footrest 20 and secondary footrest 40 is relatively small in the TV position, resulting in similar deformation of both. This avoids the situation where the heel cannot adequately support itself on the main footrest 20 if the height difference between the first and second planes is too large.

[0068] The footrest extension assembly 50 includes a first link 51, a second link 52, a third link 53, and a fourth link 54. The two ends of the first link 51 are connected to the secondary support plate 31 and the second link 52, respectively. One end of the third link 53 is connected to the extension link 13 and the secondary support plate 31, and the other end of the third link 53 is connected to the fourth link 54. The middle part of the first link 51 is connected to the fourth link 54, forming a structurally stable four-bar structure.

[0069] The third link 53 bends towards the side closer to the first link 51. The third link 53 and the first link 51 partially overlap, making the overall structure of the footrest extension assembly 50 more compact. In addition, when viewed from the outside of the seat, the first link 51 can conceal the third link 53, improving the appearance design of the footrest extension assembly 50 and enhancing the overall aesthetics and neatness of the product.

[0070] The drive assembly 60 includes a drive member 61, a first extension link 62, and a second extension link 63. The two ends of the first extension link 62 are connected to the drive member 61 and the second extension link 63, respectively, and the second extension link 63 is connected to the middle of the fourth link 54. The drive member 61 transmits force to the footrest extension assembly 50 through the first extension link 62 and the second extension link 63.

[0071] The seating also includes a base 71, a suspension assembly 72, a seat frame assembly 73, and a backrest assembly 74. The suspension assembly 72 is connected to both the base 71 and the seat frame assembly 73. The backrest assembly 74 and the footrest extension assembly 50 are connected to the front and rear ends of the seat frame assembly 73, respectively. The second link 52 and the fourth link 54 are connected to the seat frame assembly 73, thereby causing the seat frame assembly 73 to move synchronously when the footrest extension assembly 50 unfolds.

[0072] When the seat is in a sitting, TV-like, or reclining position, the included angles formed by the mounting surface of the seat frame assembly 73 and the horizontal plane range from 7° to 11°, 10° to 14°, and 26° to 28°, respectively.

[0073] In this embodiment, the highest point of the backrest assembly 74 is located on the seventh plane. When the seat is in a reclining position, the third plane is located above the seventh plane, and the shortest distance between the third plane and the seventh plane is 122.1 cm. At this time, the seat is in a zero-gravity state and is in the most comfortable posture.

[0074] The main foot support assembly 10 and the secondary foot support assembly 30 of this application have a simple structure, few parts, and low production and processing costs, and can provide heel support for users.

[0075] The connecting rods comprising the main footrest assembly 10, the secondary footrest assembly 30, the footrest extension assembly 50, and the drive assembly 60 of this application are provided with bent portions. These bent portions not only make the structure more compact but also help distribute stress, preventing localized stress concentration and improving the stability and strength of the seating. Furthermore, the connecting rods constituting the above assemblies also have multiple arc-shaped clearance grooves to prevent mistake-proofing.

[0076] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A seat furniture, characterized in that, It includes a main foot support mechanism and a secondary foot support mechanism. The main foot support mechanism includes a main foot support assembly and a main foot support pad. The secondary foot support mechanism includes a secondary foot support assembly and a secondary foot support pad. The main foot rest is installed on top of the main foot rest assembly, and the secondary foot rest is installed on top of the secondary foot rest assembly; Wherein, the horizontal plane at the highest point of the main footrest mechanism is the first plane, and the horizontal plane at the highest point of the secondary footrest mechanism is the second plane; when the seat is in the TV posture state, the first plane is located above the second plane.

2. The seating according to claim 1, characterized in that, The horizontal plane at the highest point of the main footrest assembly is the third plane, the horizontal plane at the highest point of the secondary footrest assembly is the fourth plane, the horizontal plane at the highest point of the main footrest pad is the fifth plane, and the horizontal plane at the highest point of the secondary footrest pad is the sixth plane; when the seat is in the TV posture state, the third plane is located below the fourth plane, and the fifth plane is located above the sixth plane.

3. The seating according to claim 1, characterized in that, The horizontal plane at the highest point of the main footrest assembly is the third plane, the horizontal plane at the highest point of the secondary footrest assembly is the fourth plane, the horizontal plane at the highest point of the main footrest pad is the fifth plane, and the horizontal plane at the highest point of the secondary footrest pad is the sixth plane; when the seat is in the TV posture state, the third plane is located above the fourth plane, and the fifth plane is located above the sixth plane.

4. The seating according to claim 2 or 3, characterized in that, It also includes a footrest extension assembly; the main footrest assembly includes a main support plate, a linkage rod, and an extension link; one end of the main support plate is used to support the user's foot; The other end is connected to one end of the extension link; the two ends of the linkage are respectively connected to the main support plate and the secondary foot rest assembly, and the other end of the extension link is connected to the foot rest extension assembly.

5. The seating according to claim 4, characterized in that, The linkage rod includes a first linkage part connected to the main support plate and a second linkage part connected to the secondary foot assembly, with the first linkage part and the second linkage part forming an obtuse angle.

6. The seating according to claim 5, characterized in that, When the seat is in the TV posture state, along the first direction, the first linkage extends away from the secondary footrest assembly, and the angle between the first linkage and the horizontal plane is α, where α ranges from 10° to 15°.

7. The seating according to claim 6, characterized in that, The included angle between the first linkage part and the second linkage part is b, and the range of b is 155°-165°. The length of the first linkage part is greater than the length of the second linkage part.

8. The seating according to claim 5, characterized in that, When the seat is in the TV posture state, along the first direction, the first linkage extends away from the secondary footrest assembly, and the angle between the first linkage and the horizontal plane is c, where c ranges from 25° to 35°.

9. The seating according to claim 8, characterized in that, The included angle between the first linkage part and the second linkage part is d, and the range of d is 100°-110°. The length of the first linkage part is greater than the length of the second linkage part.

10. The seating according to claim 5, characterized in that, The main support plate includes a first support part and a second support part, and the connection point between the first support part and the second support part is connected to the linkage rod; the first support part and the second support part form an obtuse angle.

11. The seating according to claim 4, characterized in that, The secondary foot support assembly includes a secondary support plate and a secondary foot support connecting rod; the two ends of the secondary foot support connecting rod are respectively connected to the secondary support plate and the extension connecting rod and are positioned between the two.

12. The seating according to claim 11, characterized in that, The footrest extension assembly includes a first link, a second link, a third link, and a fourth link. The two ends of the first link are respectively connected to the sub-support plate and the second link. One end of the third link is connected to the extension link and the sub-support plate, and the other end of the third link is connected to the fourth link. The middle part of the first link is connected to the fourth link.

13. The seating according to claim 12, characterized in that, The third link bends toward one side of the first link; the third link and the first link partially overlap.

14. The seating according to claim 12, characterized in that, It also includes a drive assembly; the drive assembly includes a drive member, a first extension link and a second extension link; the two ends of the first extension link are respectively connected to the drive member and the second extension link, and the second extension link is connected to the middle of the fourth link.

15. The seating according to claim 4, characterized in that, It also includes a base, a suspension assembly, a seat frame assembly, and a backrest assembly; the suspension assembly is connected to the base and the seat frame assembly respectively, and the backrest assembly and the footrest extension assembly are connected to the front and rear ends of the seat frame assembly respectively.

16. The seating according to claim 1, characterized in that, When the seat is in a reclining position, the main footrest forms an angle e with the horizontal plane, the angle e ranging from 5° to 20°, and the secondary footrest forms an angle f with the horizontal plane, the angle f ranging from 7° to 23°; the angle e is smaller than the angle f.

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