Seat extension device for providing zero-gravity orientation

Abstract

A seat extension device for providing a zero-gravity orientation comprises a support structure; a foot supporting structure, comprising a large footrest (1), a small footrest (8), and a first connecting rod assembly; a seat structure, comprising a side plate (9), wherein the side plate (9) is provided with a seat frame mounting surface (9a); and a backrest member (11). When the seat extension device is in a zero-gravity orientation, the included angle β between the seat frame mounting surface (9a) and the ground is 28° to 50°; and when the included angle β between the seat frame mounting surface (9a) and the ground is 30°, the backrest angle α formed between the backrest member (11) and the ground is 21°. The vertical distance H between the highest point of the large footrest (1) and the highest point of the backrest member (11) is 380 mm. After a user lies down, the knees and the heart are roughly located on the same horizontal plane, the force-bearing area of the human body is improved, all parts of the body are subject to balanced pressure, the person feels weightless as though in space, as though floating, without feeling pressure; furthermore additional costs are reduced.

Description

A seat extension device providing zero-gravity posture Technical Field

[0001] The utility model belongs to the technical field of sofas, and in particular relates to a seat extension device providing a zero-gravity posture. Background Art

[0002] As people's living standards improve, functional sofas and chairs are becoming increasingly common. With the widespread use of functional sofas, the demand for comfortable sofa seats is also increasing. Functional seats are generally equipped with seat extension devices, allowing the seat to be adjusted between sitting, relaxing, and reclining positions.

[0003] Existing seat extension devices have the following drawbacks: When in a reclining position, the leg height is too low to achieve a zero-gravity position, preventing the knees from being aligned with the heart, thus compromising seat comfort. Existing seats that provide a zero-gravity position require the legs to be lengthened, increasing costs. Therefore, a seat extension device that provides a zero-gravity position is proposed. Utility Model

[0004] The purpose of the present invention is to provide a seat extension device that provides a zero-gravity posture, aiming to solve the problems raised in the above background technology.

[0005] The embodiment of the present invention is implemented as follows: a chair extension device providing a zero-gravity posture, comprising:

[0006] Support structure;

[0007] A foot support structure, comprising a large footrest, a small footrest, and a connecting rod assembly 1, wherein the foot support structure is connected to the seat structure via the connecting rod assembly 1;

[0008] A seat structure connected to the support structure and the backrest member via a connecting structure, wherein the connecting structure includes a linkage assembly and a second connecting rod assembly; the seat structure includes side panels, each of which is provided with a seat frame mounting surface for mounting a seat frame;

[0009] a backrest member hinged to the side panels;

[0010] When the seat extension device is in a zero-gravity posture, the angle β between the seat frame mounting surface and the ground is 28°-50°; when the angle β between the seat frame mounting surface and the ground is 30°, the backrest angle α formed between the backrest and the ground is 21°; the vertical distance H between the highest point of the large footrest and the highest point of the backrest is 380mm.

[0011] Furthermore, the support structure includes a front support, a rear support and a base, and the front support and the rear support are both hinged to the base.

[0012] Furthermore, the connecting rod assembly 1 includes foot rod 6, the large footrest is hinged to foot rod 6, foot rod 5 is hinged to foot rod 6, foot rod 1 and one end of foot rod 2 are hinged to foot rod 5, foot rod 1 and foot rod 2 are both hinged to the small footrest, one end of foot rod 3 is hinged to the other end of foot rod 1, foot rod 3 is hinged to foot rod 2, and one end of foot rod 4 is hinged to foot rod 2.

[0013] Furthermore, the other ends of the foot rod three and the foot rod four are hinged on the side panel, and the backrest member and the seat frame mounting protective member are hinged on the side panel.

[0014] Furthermore, the connecting rod assembly 2 includes connecting rod 1, connecting rod 2, connecting rod 3, connecting rod 4, connecting rod 5 and connecting rod 6, the connecting rod 1 is hinged to the backrest member, one end of the connecting rod 5 and connecting rod 6 is hinged to the foot rod 4, one end of a rotating member is hinged to the connecting rod 6, the rotating member is connected to the driver, one end of the connecting rod 2 is hinged to the connecting rod 5, and the other end of the connecting rod 2 is hinged to a slide member, and the slide member is hinged to the side panel.

[0015] Furthermore, the linkage assembly includes a linkage part, a front linkage and a rear linkage, and the linkage part, the front linkage and the rear linkage are all hinged to the side panel, the linkage part is hinged to the slide part, the linkage part is hinged to the rear support, the connecting rod four and the connecting rod one, the rear linkage is hinged to the connecting rod five and the connecting rod three, and the front linkage is hinged to the connecting rod four and the front support.

[0016] Furthermore, a slide liner is riveted into the slide member.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The seat extension device that provides a zero-gravity posture can put the seat in a zero-gravity posture. At this time, the angle between the seat and the ground can be 28°-50°, which can enable the user's knees and heart to be roughly on the same horizontal plane after lying down, thereby increasing the force-bearing area of ​​the human body and allowing all parts of the body to be evenly pressurized, making people feel like they are in space, as if floating, without a sense of oppression. Moreover, the device does not achieve the zero-gravity posture by lengthening the legs, which is more cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of a seat extension device providing a zero-gravity posture when the leg rest is fully extended and the backrest is fully tilted, which is the zero-gravity posture.

[0020] FIG2 is a schematic rear view of FIG1 .

[0021] FIG3 is a schematic structural diagram of the seat extension device providing a zero-gravity posture when the leg rest is fully extended.

[0022] FIG4 is a schematic rear view of FIG3 .

[0023] FIG5 is a schematic structural diagram of the seat extension device providing a zero-gravity posture when the leg rest is folded.

[0024] FIG6 is a rear view schematic diagram of FIG5 .

[0025] In the figure: 1-large footrest; 2-foot rod one; 3-foot rod two; 4-foot rod three; 5-foot rod four; 6-foot rod five; 7-foot rod six; 8-small footrest; 9-side panel; 9a-seat frame mounting surface; 10-seat frame mounting guard; 11-backrest member; 12-connecting rod one; 13-connecting rod two; 14-connecting rod three; 15-front linkage; 16-connecting rod five; 17-connecting rod six; 18-rotating member; 19-front support; 20-rear support; 21-base foot; 22-slide member; 23-linkage member; 24-rear linkage; 25-connecting rod four; 26-slide bushing. Implementation Method

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0028] As shown in FIG1-3, a seat extension device for providing a zero-gravity posture is provided in one embodiment of the present invention, comprising:

[0029] Support structure;

[0030] A foot support structure, comprising a large footrest 1, a small footrest 8 and a connecting rod assembly 1, wherein the foot support structure is connected to the seat structure via the connecting rod assembly 1;

[0031] A seat structure connected to the support structure and the backrest member 11 via a connecting structure comprising a linkage assembly and a second connecting rod assembly; the seat structure comprising a side panel 9 having a seat frame mounting surface 9a for mounting a seat frame;

[0032] a backrest member 11 , the backrest member 11 being hinged to the side panel 9 ;

[0033] When the seat extension device is in a zero-gravity posture, the angle β between the seat frame mounting surface 9a and the ground is 28°-50°; when the angle β between the seat frame mounting surface 9a and the ground is 30°, the backrest angle α formed between the backrest member 11 and the ground is 21°; the vertical distance H between the highest point of the large footrest 1 and the highest point of the backrest member 11 is 380mm.

[0034] In an embodiment of the present invention, preferably, when the chair is in a zero-gravity posture, the user can lie down with his knees and heart roughly at the same level, thereby increasing the force-bearing area of ​​the human body and evenly distributing pressure to all parts of the body, making the user feel like they are in space, floating, without a sense of oppression.

[0035] As shown in FIG. 1 , as a preferred embodiment of the present invention, the support structure includes a front support 19 , a rear support 20 and a base 21 , and both the front support 19 and the rear support 20 are hinged to the base 21 .

[0036] As shown in Figure 1, as a preferred embodiment of the present utility model, the connecting rod assembly 1 includes a foot rod 6 7, the large footrest 1 is hinged to the foot rod 6 7, the foot rod 5 6 is hinged to the foot rod 6 7, the foot rod 1 2 and one end of the foot rod 2 3 are hinged to the foot rod 5 6, the foot rod 1 2 and the foot rod 2 3 are both hinged to the small footrest 8, the other end of the foot rod 1 2 is hinged to one end of the foot rod 3 4, the foot rod 3 4 is hinged to the foot rod 2 3, and one end of the foot rod 4 5 is hinged to the foot rod 2 3.

[0037] As shown in FIG1 , as a preferred embodiment of the present invention, the side panel 9 is hinged with the other end of the foot rod 3 4 and the other end of the foot rod 4 5 , and the side panel 9 is hinged with a backrest member 11 and a seat frame mounting guard member 10 .

[0038] As shown in Figure 1, as a preferred embodiment of the present utility model, the connecting rod assembly two includes connecting rod one 12, connecting rod two 13, connecting rod three 14, connecting rod four 25, connecting rod five 16 and connecting rod six 17, the connecting rod one 12 is hinged to the backrest part 11, one end of the connecting rod five 16 and connecting rod six 17 is hinged to the foot rod four 5, one end of the rotating part 18 is hinged to the connecting rod six 17, the rotating part 18 is connected to the driver, one end of the connecting rod two 13 is hinged to the connecting rod five 16, and the other end of the connecting rod two 13 is hinged to a slide member 22, and the slide member 22 is hinged to the side panel 9.

[0039] In the embodiment of the present invention, preferably, since the angle between the side panel mounting surface 9a and the ground can reach 28°-50°, in order to ensure the stability of the seat extension device, a second connecting rod 13 is added.

[0040] As shown in Figure 1, as a preferred embodiment of the present invention, the linkage assembly includes a linkage member 23, a front linkage 15 and a rear linkage 24. The linkage member 23, the front linkage 15 and the rear linkage 24 are all hinged to the side panel 9. The linkage member 23 is hinged to the slide member 22. The linkage member 23 is hinged with the rear support 20, the connecting rod four 25 and the connecting rod one 12. The rear linkage 24 is hinged with the connecting rod five 16 and the connecting rod three 14. The front linkage 15 is hinged with the connecting rod four 25 and the front support 19.

[0041] As shown in FIG. 1 , as a preferred embodiment of the present invention, a slideway bushing 26 is riveted into the slideway member 22 .

[0042] In the embodiment of the present utility model, preferably, since the angle between the side panel mounting surface 9a and the ground can reach 28°-50°, in order to ensure the stability of the seat extension device, a slide member 22 is added, and a metal slide bushing 26 is riveted in the slide member 22. The slide bushing 26 can rotate. When the iron frame is opened and closed, the slide bushing 26 can roll in the slide member 22, making the opening and closing of the iron frame smoother and more stable.

[0043] As shown in Figures 3 and 4, the seat is in the leisure position, with the leg rest fully extended. When the seat is extended to the zero-gravity position, the linkage 23 and the front linkage 15 are both hinged to the side panel 9. The front linkage 15 and the linkage 23 are connected by a connecting rod 25. The front linkage 15 is hinged to the front support 19, and the linkage 23 is hinged to the rear support 20. The front support 19 and the rear support 20 are in turn connected to the foot 21. When these components rotate, the extension mechanism transitions from the leisure position to the zero-gravity position (as shown in Figures 1 and 2). When the seat extension mechanism is in the zero-gravity position, the angle β between the seat frame mounting surface 9a and the ground is 28°-50°. In some embodiments, it can be 28°, 29°, 30°, 32°, 34°, 36°, 38°, 40°, 42°, 44°, 46°, 48°, or 50°. In the zero-gravity position, the backrest angle α is 21°. In some embodiments, it can be 21°, 22.5°, or 24°. For example, when the angle between the seat frame mounting surface 9a and the ground is 30°, the angle between the backrest 11 and the ground is 21°. When the seat extension device is in a zero-gravity position, the vertical distance H between the highest point of the large footrest 1 and the highest point of the backrest 11 is 380 mm. In some embodiments, it can be 340 mm, 360 mm, and 380 mm. For example, in this embodiment, when the seat extension device is in a zero-gravity position, the highest point of the large footrest 1 is 650 mm from the ground, and the highest point of the backrest 11 is 270 mm from the ground. The height difference between the two components can reach 380 mm. When the seat is in a zero-gravity position, the user can lie down with the knees and heart roughly at the same level, increasing the force-bearing area of ​​the human body and evenly distributing pressure to all parts of the body, making the user feel like they are in space, floating, without a sense of oppression.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A seat extension device providing a zero gravity posture, characterized in that: include: Support structure; A foot support structure, the foot support structure comprising a large footrest, a small footrest and a connecting rod assembly 1, the foot support structure being connected to the seat structure via the connecting rod assembly 1; A seat structure, wherein the seat structure is connected to the support structure and the backrest member via a connecting structure, wherein the connecting structure includes a linkage assembly and a connecting rod assembly; the seat structure includes a side panel, wherein a seat frame mounting surface for mounting a seat frame is provided on the side panel; a backrest member, the backrest member being hinged to the side panel; When the seat extension device is in a zero-gravity posture, the angle β between the seat frame mounting surface and the ground is 28°-50°; when the angle β between the seat frame mounting surface and the ground is 30°, the backrest angle α formed between the backrest part and the ground is 21°; the vertical distance H between the highest point of the large footrest and the highest point of the backrest part is 380mm.

2. The seat extension device for providing a zero gravity posture according to claim 1, characterized in that: The support structure comprises a front support, a rear support and a base, wherein the front support and the rear support are both hinged to the base.

3. The seat extension device for providing a zero gravity posture according to claim 2, characterized in that: The connecting rod assembly 1 includes foot rod 6, the large footrest is hinged to foot rod 6, foot rod 5 is hinged to foot rod 6, foot rod 1 and one end of foot rod 2 are hinged to foot rod 5, foot rod 1 and foot rod 2 are both hinged to the small footrest, one end of foot rod 3 is hinged to the other end of foot rod 1, foot rod 3 is hinged to foot rod 2, and one end of foot rod 4 is hinged to foot rod 2.

4. The seat extension device for providing a zero gravity posture according to claim 3, characterized in that: The other ends of the foot rod three and the foot rod four are hinged on the side plate, and the backrest part and the seat frame installation protection part are hinged on the side plate.

5. The seat extension device for providing a zero gravity posture according to claim 3, characterized in that: The connecting rod assembly 2 includes connecting rod 1, connecting rod 2, connecting rod 3, connecting rod 4, connecting rod 5 and connecting rod 6. The connecting rod 1 is hinged to the backrest part, one end of the connecting rod 5 and connecting rod 6 is hinged to the foot rod 4, one end of a rotating part is hinged to the connecting rod 6, and the rotating part is connected to the driver, one end of the connecting rod 2 is hinged to the connecting rod 5, and the other end of the connecting rod 2 is hinged to a slide groove part, and the slide groove part is hinged to the side panel.

6. The seat extension device for providing a zero gravity posture according to claim 5, characterized in that: The linkage assembly includes a linkage part, a front linkage and a rear linkage, wherein the linkage part, the front linkage and the rear linkage are all hinged to the side panels, the linkage part is hinged to the slide groove part, the linkage part is hinged with a rear support, a fourth connecting rod and a first connecting rod, the rear linkage is hinged with a fifth connecting rod and a third connecting rod, and the front linkage is hinged with a fourth connecting rod and a front support.

7. The seat extension device for providing a zero gravity posture according to claim 5, characterized in that: A slideway bushing is riveted in the slideway member.

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