Double-electric-motor elderly chair extension device capable of providing zero-gravity posture

Abstract

A dual-electric-motor elderly chair extension device capable of providing a zero-gravity posture, comprising: a leg assembly (10), a large foot rest (46), and a base (28); a first driving assembly (31) connected to a seat lifting link group (33); a first push rod electric motor (29) connected to the base (28) and the first driving assembly (31); a second driving assembly (32) connected to one end of a second push rod electric motor (30); the second push rod electric motor (30), the other end of the second push rod electric motor (30) being connected to the base (28); a seating assembly (43) connected to the first driving assembly (31); and a backrest assembly (44) fixedly connected to the second driving assembly (32). The elderly chair extension device can reach a zero-gravity posture without lengthening the legs, reducing the cost.

Description

A dual-motor elderly chair extension device that can provide zero-gravity posture Technical Field

[0001] The utility model belongs to the technical field of sofas, and in particular relates to a dual-motor elderly chair extension device capable of 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 comfort in sofa seats is also increasing. Functional seats are generally equipped with mechanical extension devices, allowing the seat to be adjusted between sitting, lounging, and reclining positions.

[0003] Existing extension devices for elderly chairs have the following drawbacks: The leg height is too low when lying down, preventing the knees from being aligned with the heart, thus achieving a zero-gravity position and affecting chair comfort; and the leg lengthening required to achieve a zero-gravity position is costly. Therefore, a dual-motor extension device for elderly chairs that can provide a zero-gravity position is proposed. Utility Model

[0004] The purpose of the utility model is to provide a dual-motor elderly chair extension device that can provide a zero-gravity posture, aiming to solve the problems raised in the above background technology.

[0005] The embodiment of the present utility model is implemented as follows: a dual-motor elderly chair extension device capable of providing a zero-gravity posture, comprising:

[0006] a leg assembly, wherein the leg assembly is provided with a large footrest;

[0007] a base, wherein the base is provided with a seat lifting assembly;

[0008] a first drive assembly, the first drive assembly being disposed on the base, the first drive assembly being connected to a seat lifting linkage assembly, the seat lifting linkage assembly being connected to the leg assembly via a connecting assembly;

[0009] a first push rod motor, wherein one end of the first push rod motor is connected to the base, and the other end of the first push rod motor is connected to the first driving assembly;

[0010] a second drive assembly connected to one end of a second push rod motor;

[0011] a second push rod motor, wherein the other end of the second push rod motor is connected to the base;

[0012] a seat assembly connected to the first drive assembly via a seat assembly;

[0013] A backrest assembly is fixedly connected to the second drive assembly.

[0014] Furthermore, the seat assembly includes a side plate, the side plate is provided with a seat frame mounting plate, and the seat frame mounting plate is provided with a seat frame mounting surface;

[0015] When the dual-motor elderly chair extension device is in a zero-gravity posture, the angle β between the seat frame mounting surface and the ground is 28°-50°.

[0016] Furthermore, the backrest assembly includes a backrest member, the backrest member is rotatably connected to the side plate, and the backrest member is fixedly connected to the second drive assembly;

[0017] When the dual-motor elderly chair extension device is in a zero-gravity posture, the angle α between the backrest and the ground is 20°; the vertical distance H between the highest point of the large footrest and the highest point of the backrest is 444 mm.

[0018] Furthermore, the first driving component is provided with a waist-shaped groove 1 and a waist-shaped groove 2, and the base is provided with a connecting hole 1 and a connecting hole 2, the connecting hole 1 cooperates with the waist-shaped groove 1, and the connecting hole 2 cooperates with the waist-shaped groove 2.

[0019] Furthermore, the seat lifting link group includes a fixed link, a rotating link 1, a rotating link 2 and a rotating link 3, wherein the rotating link 3 is rotatably connected to one end of the rotating link 2, the other end of the rotating link 2 is rotatably connected to one end of the rotating link 1, the other end of the rotating link 1 is rotatably connected to one end of the fixed link, and the other end of the fixed link is fixedly connected to the side panel.

[0020] Furthermore, the connecting assembly includes a leg rest link 1 and a leg rest link 2, the leg rest link 1 is rotatably connected to the leg rest link 2, the leg rest link 2 is connected to the leg assembly, the leg rest link 1 is rotatably connected to one end of the rotating link 3, and the other end of the rotating link 3 is rotatably connected to the first drive assembly.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This dual-motor elderly chair extension device that can provide a zero-gravity posture can allow the user to lie down with their knees and heart roughly at the same level when the chair is in the zero-gravity posture, thereby increasing the body's force-bearing area and evenly distributing pressure to all parts of the body, making people feel like they are in space, as if floating, without a sense of oppression. There is no need to lengthen the legs to achieve the zero-gravity posture, thus reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic structural diagram of a dual-motor elderly chair extension device capable of providing a zero-gravity posture when the legrest is fully opened and the backrest is fully tilted, which is a zero-gravity posture.

[0024] FIG2 is a schematic diagram of the three-dimensional structure of a dual-motor elderly chair extension device capable of providing a zero-gravity posture.

[0025] FIG3 is a schematic diagram of the three-dimensional structure of the base of the dual-motor elderly chair extension device that can provide a zero-gravity posture.

[0026] FIG4 is a schematic diagram of the three-dimensional structure of the first driving assembly in the dual-motor elderly chair extension device capable of providing a zero-gravity posture.

[0027] FIG5 is a schematic diagram of the three-dimensional structure of a dual-motor elderly chair extension device capable of providing a zero-gravity posture.

[0028] FIG6 is a schematic structural diagram of a dual-motor elderly chair extension device capable of providing a zero-gravity posture when the leg components are folded and in a sitting posture.

[0029] FIG7 is a schematic structural diagram of a dual-motor elderly chair extension device capable of providing a zero-gravity posture when in a standing posture.

[0030] In the figure: 10-leg assembly; 28-base; 28a-connecting hole one; 28b-connecting hole two; 29-first push rod motor; 30-second push rod motor; 31-first drive assembly; 31a-waist-shaped groove one; 31b-waist-shaped groove two; 32-second drive assembly; 33-seat lifting link group; 34-fixed link; 35-rotating link one; 36-rotating link two; 37-rotating link three; 38-seat frame mounting plate; 38a-seat frame mounting surface; 39-side panel; 40-backrest; 41-legrest link one; 42-legrest link two; 43-seat assembly; 44-backrest assembly; 45-seat frame; 46-large footrest; 47-seat lifting mechanism. Implementation Method

[0031] 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.

[0032] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0033] As shown in FIG1-7, an embodiment of the present invention provides a dual-motor elderly chair extension device capable of providing a zero-gravity posture, comprising:

[0034] a leg assembly 10 , wherein the leg assembly 10 is provided with a large footrest 46 ;

[0035] A base 28 , on which a seat lifting assembly 47 is provided;

[0036] A first drive assembly 31 is provided on the base 28 , and a seat lifting linkage 33 is connected to the first drive assembly 31 , and the seat lifting linkage 33 is connected to the leg assembly 10 via a connecting assembly;

[0037] A first push rod motor 29, one end of the first push rod motor 29 is connected to the base 28, and the other end of the first push rod motor 29 is connected to the first driving assembly 31;

[0038] A second drive assembly 32 , the second drive assembly 32 being connected to one end of the second push rod motor 30 ;

[0039] A second push rod motor 30, the other end of the second push rod motor 30 is connected to the base 28;

[0040] a seat assembly 43 , the seat assembly 43 being connected to the first drive assembly 31 via the seat assembly 43 ;

[0041] The backrest assembly 44 is fixedly connected to the second drive assembly 32 .

[0042] 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.

[0043] As shown in FIG1 and FIG2 , as a preferred embodiment of the present invention, the seat assembly 43 includes a side plate 39 , a seat frame mounting plate 38 is provided on the side plate 39 , and a seat frame mounting surface 38a is provided on the seat frame mounting plate 38 ;

[0044] When the dual-motor elderly chair extension device is in a zero-gravity posture, the angle β between the seat frame mounting surface 38a and the ground is 28°-50°.

[0045] In an embodiment of the present invention, preferably, when the first push rod motor 29 is fully opened and the second push rod motor 30 is fully closed, the zero gravity posture is achieved, as shown in FIG1 . The angle β between the seat frame mounting surface 38a and the ground can be 28°-50°, and in some embodiments can be 28°, 29°, 30°, 32°, 34°, 36°, 38°, 40°, 42°, 44°, 46°, 48°, or 50°.

[0046] As shown in FIG1-3 , as a preferred embodiment of the present invention, the backrest assembly 44 includes a backrest member 40 , the backrest member 40 is rotatably connected to the side plate 39 , and the backrest member 40 is fixedly connected to the second drive assembly 32 ;

[0047] When the dual-motor elderly chair extension device is in a zero-gravity posture, the angle α between the backrest 40 and the ground is 20°; the vertical distance H between the highest point of the large footrest 46 and the highest point of the backrest 40 is 444 mm.

[0048] In the embodiment of the present invention, preferably, since the backrest member 40 is rotatably connected to the side panel 39 and fixedly connected to the second drive assembly 32, the second drive assembly 32 is connected to one end of the second push rod motor 30, and the other end of the second push rod motor 30 is connected to the base 28, the backrest member 40 descends when the second push rod motor 30 is turned off. When the first push rod motor 29 is fully turned on, the leg assembly 10 is fully retracted, driving the seat lifting assembly 47 to lift upward, and finally into a standing position, as shown in Figure 7.

[0049] When the first push rod motor 29 is fully powered and the second push rod motor 30 is fully powered, the seat is in a zero-gravity position, as shown in Figure 1. At this point, the backrest angle α is 20°. In some embodiments, it can be 20°, 22°, or 24°. For example, when the angle between the seat frame mounting surface 38a and the ground is 30°, the angle between the backrest and the ground is 20°.

[0050] When the first push rod motor 29 is fully powered and the second push rod motor 30 is fully powered, the vehicle reaches a zero-gravity position, as shown in Figure 1. At this point, the vertical distance H between the highest point of the large footrest 46 and the highest point of the backrest 40 is 444 mm. In some embodiments, this distance can be 412 mm, 432 mm, or 444 mm. For example, if the highest point of the large footrest 46 is 738 mm from the ground and the highest point of the backrest 40 is 294 mm from the ground, the height difference between the two components can reach 444 mm.

[0051] As shown in Figures 3 and 4, as a preferred embodiment of the present utility model, the first driving component 31 is provided with a waist-shaped groove 1 31a and a waist-shaped groove 2 31b, and the base 28 is provided with a connecting hole 1 28a and a connecting hole 28b, the connecting hole 1 28a cooperates with the waist-shaped groove 1 31a, and the connecting hole 2 28b cooperates with the waist-shaped groove 2 31b.

[0052] As shown in Figure 3, as a preferred embodiment of the present utility model, the seat lifting link group 33 includes a fixed link 34, a rotating link 1 35, a rotating link 2 36 and a rotating link 37. The rotating link 3 37 is rotatably connected to one end of the rotating link 2 36, and the other end of the rotating link 2 36 is rotatably connected to one end of the rotating link 1 35. The other end of the rotating link 1 35 is rotatably connected to one end of the fixed link 34, and the other end of the fixed link 34 is fixedly connected to the side panel 39.

[0053] As shown in Figure 3, as a preferred embodiment of the present utility model, the connecting assembly includes a leg rest link 1 41 and a leg rest link 2 42, the leg rest link 1 41 is rotatably connected to the leg rest link 2 42, the leg rest link 2 42 is connected to the leg assembly 10, the leg rest link 1 41 is rotatably connected to one end of the rotating link 3 37, and the other end of the rotating link 3 37 is rotatably connected to the first drive assembly 31.

[0054] In an embodiment of the present utility model, preferably, when the dual-motor elderly chair is in the sitting position of Figure 6, the first push rod motor 29 is in a semi-open state; when the push rod of the first push rod motor 29 is closed, the first drive assembly 31 is rotated. Since the first drive assembly 31 is rotationally connected to the rotating link three 37, the rotating link three 37 is rotationally connected to the leg rest link one 41, the leg rest link one 41 is rotationally connected to the leg rest link two 42, and the leg rest link two 42 is connected to the leg assembly 10. At this time, the leg assembly 10 of Figure 6 is opened, and at the same time, the rotating link three 37 is rotationally connected to the rotating link two 36, the rotating link two 36 is rotationally connected to the rotating link one 35, the rotating link one 35 is rotationally connected to the fixed link 34, and the fixed link 34 is fixedly connected to the side panel 39, thereby lifting the entire seat frame.

[0055] 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 dual-motor elderly chair extension device capable of providing a zero-gravity posture, characterized in that: include: A leg assembly, wherein the leg assembly is provided with a large footrest; A base, wherein a seat lifting assembly is provided on the base; A first driving assembly, the first driving assembly is arranged on the base, the first driving assembly is connected to a seat lifting link assembly, and the seat lifting link assembly is connected to the leg assembly through a connecting assembly; A first push rod motor, one end of which is connected to the base, and the other end of which is connected to the first driving assembly; a second drive assembly connected to one end of a second push rod motor; a second push rod motor, wherein the other end of the second push rod motor is connected to the base; a seat assembly, the seat assembly being connected to the first drive assembly via the seat assembly; A backrest assembly is fixedly connected to the second drive assembly.

2. The dual-motor elderly chair extension device capable of providing a zero-gravity posture according to claim 1, characterized in that: The seat assembly comprises a side plate, the side plate is provided with a seat frame mounting plate, and the seat frame mounting plate is provided with a seat frame mounting surface; When the dual-motor elderly chair extension device is in a zero-gravity posture, the angle β between the seat frame mounting surface and the ground is 28°-50°.

3. The dual-motor elderly chair extension device capable of providing a zero-gravity posture according to claim 2, characterized in that: The backrest assembly includes a backrest member, the backrest member is rotatably connected to the side plate, and the backrest member is fixedly connected to the second drive assembly; When the dual-motor elderly chair extension device is in a zero-gravity posture, the angle α between the backrest and the ground is 20°; the vertical distance H between the highest point of the large footrest and the highest point of the backrest is 444 mm.

4. The dual-motor elderly chair extension device capable of providing a zero-gravity posture according to claim 1, characterized in that: The first driving component is provided with a waist-shaped groove 1 and a waist-shaped groove 2, and the base is provided with a connecting hole 1 and a connecting hole 2, wherein the connecting hole 1 matches with the waist-shaped groove 1, and the connecting hole 2 matches with the waist-shaped groove 2.

5. The dual-motor elderly chair extension device capable of providing a zero-gravity posture according to claim 2, characterized in that: The seat lifting link group includes a fixed link, a rotating link 1, a rotating link 2 and a rotating link 3, wherein the rotating link 3 is rotatably connected to one end of the rotating link 2, the other end of the rotating link 2 is rotatably connected to one end of the rotating link 1, the other end of the rotating link 1 is rotatably connected to one end of the fixed link, and the other end of the fixed link is fixedly connected to the side panel.

6. The dual-motor elderly chair extension device capable of providing a zero-gravity posture according to claim 5, characterized in that: The connecting assembly includes a leg rest link 1 and a leg rest link 2, wherein the leg rest link 1 is rotatably connected to the leg rest link 2, the leg rest link 2 is connected to the leg assembly, the leg rest link 1 is rotatably connected to one end of a rotating link 3, and the other end of the rotating link 3 is rotatably connected to the first driving assembly.

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