Dual motor elderly seat extension device capable of providing zero gravity attitude

Abstract

The present utility model is applicable to the technical field of sofas, and provides a dual motor elderly seat extension device capable of providing a zero gravity attitude, including: a leg assembly, a large footrest and a base; a first drive assembly connected to a seat lifting link set; a first push rod motor connected to the base and the first drive assembly; a second drive assembly connected to a second push rod motor; the second push rod motor connected to the base; a seat assembly connected to the first drive assembly by the seat assembly; and a back assembly. According to the present utility model, and the user feels in the space like floating without pressure; the legs do not need to be lengthened to achieve the zero gravity attitude, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present utility model belongs to the technical field of sofas, and particularly relates to a dual motor elderly seat extension device capable of providing a zero gravity attitude.BACKGROUND ART

[0002] With the improvement of people's living standard, functional sofas and seats are more and more common in life. With the wide application of functional sofas, the comfort requirements for sofa seats are also increasing. Functional seats are typically equipped with mechanical extension devices to allow the seat to be adjusted between sitting, leisure and lying attitudes.

[0003] Existing elderly seat extension devices suffer from the following drawbacks: in the lying attitude, the leg height is low, the same horizontal line between the knee and the heart cannot be realized, and a realization of zero gravity attitude affects the comfort of the seat. It is costly to lengthen the legs to achieve a zero gravity attitude. To this end, a dual motor elderly seat extension device capable of providing a zero gravity attitude is proposed.SUMMARY OF THE INVENTION

[0004] It is an object of the present utility model to provide a dual motor elderly seat extension device capable of providing a zero gravity attitude, which aims to solve the above-mentioned problems raised in the background art.

[0005] The embodiments of the present utility model are realized as follows: a dual motor elderly seat extension device capable of providing a zero gravity attitude comprises:

[0006] a leg assembly provided with a large footrest;

[0007] a base provided with a seat lifting assembly;

[0008] a first drive assembly provided on the base and connected to a seat lifting link set, wherein the seat lifting link set is connected to the leg assembly by a connection 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 drive assembly;

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

[0011] the 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 by the seat assembly; and

[0013] a back assembly fixedly connected to the second drive assembly.

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

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

[0016] Further, the back assembly comprises a backrest, the backrest is rotatably connected to the side plates, and the backrest is fixedly connected to the second drive assembly; an angle α between the backrest and the ground is 20° when the dual motor elderly seat extension device is in a zero gravity attitude; and a vertical distance H between a highest point of the large footrest and a highest point of the backrest is 444 mm.

[0017] Furthermore, the first drive assembly is provided with a first waist groove and a second waist groove, the base is provided with a first connecting hole and a second connecting hole, the first connecting hole is matched with the first waist groove, and the second connecting hole is matched with the second waist groove.

[0018] Further, the seat lifting link set comprises a fixed link, a first rotary link, a second rotary link and a third rotary link, one end of the second rotary link is rotatably connected to the third rotary link, the other end of the second rotary link is rotatably connected to one end of the first rotary link, the other end of the first rotary link is rotatably connected to one end of the fixed link, and the other end of the fixed link is fixedly connected to the side plate.

[0019] Further, the connection assembly comprises a first leg rest link and a second leg rest link, wherein the first leg rest link is rotatably connected to the second leg rest link, the second leg rest link is connected to the leg assembly, the first leg rest link is rotatably connected to one end of the third rotary link, and the other end of the third rotary link is rotatably connected to the first drive assembly.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] According to the dual motor elderly seat extension device capable of providing a zero gravity attitude, when the seat is in a zero gravity attitude, the knees and the heart of a user can be approximately positioned on the same horizontal plane after the user lies down, so that the stress area of the human body is enlarged, all parts of the body are uniformly stressed, and the user feels in the space like floating without pressure; the legs do not need to be lengthened to achieve the zero gravity attitude, and the cost is reduced.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude when a leg rest is fully opened and a backrest is fully reclined, in this case in a zero gravity attitude.

[0023] FIG. 2 is a stereoscopic structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0024] FIG. 3 is a stereoscopic structure schematic view of a base of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0025] FIG. 4 is a stereoscopic structure schematic view of a first drive assembly of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0026] FIG. 5 is a stereoscopic structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0027] FIG. 6 is a structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude when leg assemblies are closed up in a sitting attitude.

[0028] FIG. 7 is a structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude in a standing attitude.

[0029] In the figure: 10—leg assembly; 28—base; 28a—first connecting hole; 28b—second connecting hole; 29—first push rod motor; 30—second push rod motor; 31—first drive assembly; 31a—first waist groove; 31b—second waist groove; 32—second drive assembly; 33—seat lifting link set; 34—fixed link; 35—first rotary link; 36—second rotating link; 37—third rotary link; 38—seat frame mounting plate; 38a—seat frame mounting surface; 39—side plate; 40—backrest; 41—first leg rest link; 42—second leg rest link; 43—seat assembly; 44—backrest assembly; 45—seat frame; 46—large footrest; 47—seat lifting mechanism.DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to make the objects, technical solutions and advantages of the present utility model more clear, the present utility model is described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The specific implementation of the present utility model is described in detail below with reference to specific embodiments.

[0032] As shown in FIGS. 1-7, a dual motor elderly seat extension device capable of providing a zero gravity attitude provided in one embodiment of the present utility model comprises:

[0033] a leg assembly 10 provided with a large footrest 46;

[0034] a base 28 provided with a seat lifting assembly 47;

[0035] a first drive assembly 31 provided on the base 28, wherein a seat lifting link set 33 is connected to the first drive assembly 31, and the seat lifting link set 33 is connected to the leg assembly 10 by a connection assembly;

[0036] a first push rod motor 29, wherein 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 drive assembly 31;

[0037] a second drive assembly 32 connected to one end of a second push rod motor 30; the second push rod motor 30, wherein the other end of the second push rod motor 30 is connected to the base 28;

[0038] a seat assembly 43 connected to the first drive assembly 31 by the seat assembly 43; and

[0039] a back assembly 44 fixedly connected to the second drive assembly 32.

[0040] In the embodiments of the present utility model, it is preferable that when the seat is in a zero gravity attitude, the knees and the heart of a user can be approximately positioned on the same horizontal plane after the user lies down, so that the stress area of the human body is enlarged, all parts of the body are uniformly stressed, and the user feels in the space like floating without pressure.

[0041] As shown in FIGS. 1 and 2, as a preferred embodiment of the present utility model, the seat assembly 43 comprises a side plate 39, the side plate 39 is provided with a seat frame mounting plate 38, the seat frame mounting plate 38 is provided with a seat frame mounting surface 38a; and

[0042] an angle β between the seat frame mounting surface 38a and a ground is 28°-50° when the dual motor elderly seat extension device is in a zero gravity attitude.

[0043] In the present utility model embodiment, it is preferable that when the first push rod motor 29 is turned on to the maximum and the second push rod motor 30 is turned off to the minimum, a zero gravity attitude is obtained, as shown in FIG. 1. An angle β between the seat frame mounting surface 38a and a ground may be 28°-50° and in some embodiments may be 28°, 29°, 30°, 32°, 34°, 36°, 38°, 40°, 42°, 44°, 46°, 48°, and 50°.

[0044] As shown in FIGS. 1-3, as a preferred embodiment of the present utility model, the back assembly 44 comprises a backrest 40, the backrest 40 is rotatably connected to the side plate 39, and the backrest 40 is fixedly connected to the second drive assembly 32; an angle α between the backrest 40 and the ground is 20° when the dual motor elderly seat extension device is in a zero gravity attitude; and a vertical distance H between a highest point of the large footrest 46 and a highest point of the backrest 40 is 444 mm.

[0045] In the embodiment of the present utility model, it is preferable that since the backrest 40 is rotatably connected to the side plate 39, the backrest 40 is 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 40 descends when the second push rod motor 30 is turned off. When the first push rod motor 29 is fully open, the leg assembly 10 is fully closed up, bringing the seat lifting assembly 47 up and eventually into a standing attitude, as shown in FIG. 7.

[0046] When the first push rod motor 29 is turned on to a maximum and the second push rod motor 30 is turned off to a minimum, a zero gravity attitude is obtained, as shown in FIG. 1. At this time, the backrest angle α is 20° and may be 20°, 22° and 24° in some embodiments. For example, when an angle between the seat frame mounting surface 38a and a ground is 30°, an angle between the backrest and the ground is 20°.

[0047] When the first push rod motor 29 is turned on to a maximum and the second push rod motor 30 is turned off to a minimum, a zero gravity attitude is obtained, as shown in FIG. 1. At this time, 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, it may be 412 mm, 432 mm, and 444 mm. For example, the distance from the highest point of the large footrest 46 to the ground is 738 mm, and the distance from the highest point of the backrest 40 to the ground is 294 mm, and the difference in height between the two components may be up to 444 mm.

[0048] As shown in FIGS. 3 and 4, as a preferred embodiment of the present utility model, the first drive assembly 31 is provided with a first waist groove 31a and a second waist groove 31b, the base 28 is provided with a first connecting hole 28a and a second connecting hole 28b, the first connecting hole 28a is matched with the first waist groove 31a, and the second connecting hole 28b is matched with the second waist groove 31b.

[0049] As shown in FIG. 3, as a preferred embodiment of the present utility model, the seat lifting link set 33 comprises a fixed link 34, a first rotary link 35, a second rotary link 36 and a third rotary link 37, wherein one end of the second rotary link 36 is rotatably connected to the third rotary link 37, the other end of the second rotary link 36 is rotatably connected to one end of the first rotary link 35, the other end of the first rotary link 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 a side plate 39.

[0050] As shown in FIG. 3, as a preferred embodiment of the present utility model, the connection assembly comprises a first leg rest link 41 and a second leg rest link 42, wherein the first leg rest link 41 is rotatably connected to the second leg rest link 42, the second leg rest link 42 is connected to the leg assembly 10, the first leg rest link 41 is rotatably connected to one end of the third rotary link 37, and the other end of the third rotary link 37 is rotatably connected to the first drive assembly 31.

[0051] In an embodiment of the present utility model, it is preferable that the first push rod motor 29 is in a half-open state when the dual motor elderly seat is in the sitting attitude of FIG. 6; 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 rotatably connected to the third rotary link 37, the third rotary link 37 is in turn rotatably connected to the first leg rest link 41, the first leg rest link 41 is rotatably connected to the second leg rest link 42, and the second leg rest link 42 is connected to the leg assembly 10, at this time, the leg assembly 10 in FIG. 6 is opened; at the same time, the third rotary link 37 is in turn rotatably connected to the second rotary link 36, the second rotary link 36 is rotatably connected to the first rotary link 35, and the first rotary link 35 is rotatably connected to the fixed link 34, the fixed link 34 is fixedly connected to the side plate 39, thereby the entire seat frame is lifted upward.

[0052] The above is merely a preferred embodiment of the present utility model, and it should be pointed out that for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present utility model, and these should also be regarded as the scope of protection of the present utility model, without affecting the effects of the implementation of the present utility model and the applicability of the patent.

Examples

Embodiment Construction

[0030]In order to make the objects, technical solutions and advantages of the present utility model more clear, the present utility model is described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031]The specific implementation of the present utility model is described in detail below with reference to specific embodiments.

[0032]As shown in FIGS. 1-7, a dual motor elderly seat extension device capable of providing a zero gravity attitude provided in one embodiment of the present utility model comprises:[0033]a leg assembly 10 provided with a large footrest 46;[0034]a base 28 provided with a seat lifting assembly 47;[0035]a first drive assembly 31 provided on the base 28, wherein a seat lifting link set 33 is connected to the first drive assembly 31, and the seat lifting link se...

TECHNICAL FIELD

[0001] The present utility model belongs to the technical field of sofas, and particularly relates to a dual motor elderly seat extension device capable of providing a zero gravity attitude.BACKGROUND ART

[0002] With the improvement of people's living standard, functional sofas and seats are more and more common in life. With the wide application of functional sofas, the comfort requirements for sofa seats are also increasing. Functional seats are typically equipped with mechanical extension devices to allow the seat to be adjusted between sitting, leisure and lying attitudes.

[0003] Existing elderly seat extension devices suffer from the following drawbacks: in the lying attitude, the leg height is low, the same horizontal line between the knee and the heart cannot be realized, and a realization of zero gravity attitude affects the comfort of the seat. It is costly to lengthen the legs to achieve a zero gravity attitude. To this end, a dual motor elderly seat extension device capable of providing a zero gravity attitude is proposed.SUMMARY OF THE INVENTION

[0004] It is an object of the present utility model to provide a dual motor elderly seat extension device capable of providing a zero gravity attitude, which aims to solve the above-mentioned problems raised in the background art.

[0005] The embodiments of the present utility model are realized as follows: a dual motor elderly seat extension device capable of providing a zero gravity attitude comprises:

[0006] a leg assembly provided with a large footrest;

[0007] a base provided with a seat lifting assembly;

[0008] a first drive assembly provided on the base and connected to a seat lifting link set, wherein the seat lifting link set is connected to the leg assembly by a connection 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 drive assembly;

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

[0011] the 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 by the seat assembly; and

[0013] a back assembly fixedly connected to the second drive assembly.

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

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

[0016] Further, the back assembly comprises a backrest, the backrest is rotatably connected to the side plates, and the backrest is fixedly connected to the second drive assembly; an angle α between the backrest and the ground is 20° when the dual motor elderly seat extension device is in a zero gravity attitude; and a vertical distance H between a highest point of the large footrest and a highest point of the backrest is 444 mm.

[0017] Furthermore, the first drive assembly is provided with a first waist groove and a second waist groove, the base is provided with a first connecting hole and a second connecting hole, the first connecting hole is matched with the first waist groove, and the second connecting hole is matched with the second waist groove.

[0018] Further, the seat lifting link set comprises a fixed link, a first rotary link, a second rotary link and a third rotary link, one end of the second rotary link is rotatably connected to the third rotary link, the other end of the second rotary link is rotatably connected to one end of the first rotary link, the other end of the first rotary link is rotatably connected to one end of the fixed link, and the other end of the fixed link is fixedly connected to the side plate.

[0019] Further, the connection assembly comprises a first leg rest link and a second leg rest link, wherein the first leg rest link is rotatably connected to the second leg rest link, the second leg rest link is connected to the leg assembly, the first leg rest link is rotatably connected to one end of the third rotary link, and the other end of the third rotary link is rotatably connected to the first drive assembly.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] According to the dual motor elderly seat extension device capable of providing a zero gravity attitude, when the seat is in a zero gravity attitude, the knees and the heart of a user can be approximately positioned on the same horizontal plane after the user lies down, so that the stress area of the human body is enlarged, all parts of the body are uniformly stressed, and the user feels in the space like floating without pressure; the legs do not need to be lengthened to achieve the zero gravity attitude, and the cost is reduced.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude when a leg rest is fully opened and a backrest is fully reclined, in this case in a zero gravity attitude.

[0023] FIG. 2 is a stereoscopic structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0024] FIG. 3 is a stereoscopic structure schematic view of a base of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0025] FIG. 4 is a stereoscopic structure schematic view of a first drive assembly of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0026] FIG. 5 is a stereoscopic structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude.

[0027] FIG. 6 is a structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude when leg assemblies are closed up in a sitting attitude.

[0028] FIG. 7 is a structure schematic view of a dual motor elderly seat extension device capable of providing a zero gravity attitude in a standing attitude.

[0029] In the figure: 10—leg assembly; 28—base; 28a—first connecting hole; 28b—second connecting hole; 29—first push rod motor; 30—second push rod motor; 31—first drive assembly; 31a—first waist groove; 31b—second waist groove; 32—second drive assembly; 33—seat lifting link set; 34—fixed link; 35—first rotary link; 36—second rotating link; 37—third rotary link; 38—seat frame mounting plate; 38a—seat frame mounting surface; 39—side plate; 40—backrest; 41—first leg rest link; 42—second leg rest link; 43—seat assembly; 44—backrest assembly; 45—seat frame; 46—large footrest; 47—seat lifting mechanism.DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to make the objects, technical solutions and advantages of the present utility model more clear, the present utility model is described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The specific implementation of the present utility model is described in detail below with reference to specific embodiments.

[0032] As shown in FIGS. 1-7, a dual motor elderly seat extension device capable of providing a zero gravity attitude provided in one embodiment of the present utility model comprises:

[0033] a leg assembly 10 provided with a large footrest 46;

[0034] a base 28 provided with a seat lifting assembly 47;

[0035] a first drive assembly 31 provided on the base 28, wherein a seat lifting link set 33 is connected to the first drive assembly 31, and the seat lifting link set 33 is connected to the leg assembly 10 by a connection assembly;

[0036] a first push rod motor 29, wherein 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 drive assembly 31;

[0037] a second drive assembly 32 connected to one end of a second push rod motor 30; the second push rod motor 30, wherein the other end of the second push rod motor 30 is connected to the base 28;

[0038] a seat assembly 43 connected to the first drive assembly 31 by the seat assembly 43; and

[0039] a back assembly 44 fixedly connected to the second drive assembly 32.

[0040] In the embodiments of the present utility model, it is preferable that when the seat is in a zero gravity attitude, the knees and the heart of a user can be approximately positioned on the same horizontal plane after the user lies down, so that the stress area of the human body is enlarged, all parts of the body are uniformly stressed, and the user feels in the space like floating without pressure.

[0041] As shown in FIGS. 1 and 2, as a preferred embodiment of the present utility model, the seat assembly 43 comprises a side plate 39, the side plate 39 is provided with a seat frame mounting plate 38, the seat frame mounting plate 38 is provided with a seat frame mounting surface 38a; and

[0042] an angle β between the seat frame mounting surface 38a and a ground is 28°-50° when the dual motor elderly seat extension device is in a zero gravity attitude.

[0043] In the present utility model embodiment, it is preferable that when the first push rod motor 29 is turned on to the maximum and the second push rod motor 30 is turned off to the minimum, a zero gravity attitude is obtained, as shown in FIG. 1. An angle β between the seat frame mounting surface 38a and a ground may be 28°-50° and in some embodiments may be 28°, 29°, 30°, 32°, 34°, 36°, 38°, 40°, 42°, 44°, 46°, 48°, and 50°.

[0044] As shown in FIGS. 1-3, as a preferred embodiment of the present utility model, the back assembly 44 comprises a backrest 40, the backrest 40 is rotatably connected to the side plate 39, and the backrest 40 is fixedly connected to the second drive assembly 32; an angle α between the backrest 40 and the ground is 20° when the dual motor elderly seat extension device is in a zero gravity attitude; and a vertical distance H between a highest point of the large footrest 46 and a highest point of the backrest 40 is 444 mm.

[0045] In the embodiment of the present utility model, it is preferable that since the backrest 40 is rotatably connected to the side plate 39, the backrest 40 is 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 40 descends when the second push rod motor 30 is turned off. When the first push rod motor 29 is fully open, the leg assembly 10 is fully closed up, bringing the seat lifting assembly 47 up and eventually into a standing attitude, as shown in FIG. 7.

[0046] When the first push rod motor 29 is turned on to a maximum and the second push rod motor 30 is turned off to a minimum, a zero gravity attitude is obtained, as shown in FIG. 1. At this time, the backrest angle α is 20° and may be 20°, 22° and 24° in some embodiments. For example, when an angle between the seat frame mounting surface 38a and a ground is 30°, an angle between the backrest and the ground is 20°.

[0047] When the first push rod motor 29 is turned on to a maximum and the second push rod motor 30 is turned off to a minimum, a zero gravity attitude is obtained, as shown in FIG. 1. At this time, 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, it may be 412 mm, 432 mm, and 444 mm. For example, the distance from the highest point of the large footrest 46 to the ground is 738 mm, and the distance from the highest point of the backrest 40 to the ground is 294 mm, and the difference in height between the two components may be up to 444 mm.

[0048] As shown in FIGS. 3 and 4, as a preferred embodiment of the present utility model, the first drive assembly 31 is provided with a first waist groove 31a and a second waist groove 31b, the base 28 is provided with a first connecting hole 28a and a second connecting hole 28b, the first connecting hole 28a is matched with the first waist groove 31a, and the second connecting hole 28b is matched with the second waist groove 31b.

[0049] As shown in FIG. 3, as a preferred embodiment of the present utility model, the seat lifting link set 33 comprises a fixed link 34, a first rotary link 35, a second rotary link 36 and a third rotary link 37, wherein one end of the second rotary link 36 is rotatably connected to the third rotary link 37, the other end of the second rotary link 36 is rotatably connected to one end of the first rotary link 35, the other end of the first rotary link 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 a side plate 39.

[0050] As shown in FIG. 3, as a preferred embodiment of the present utility model, the connection assembly comprises a first leg rest link 41 and a second leg rest link 42, wherein the first leg rest link 41 is rotatably connected to the second leg rest link 42, the second leg rest link 42 is connected to the leg assembly 10, the first leg rest link 41 is rotatably connected to one end of the third rotary link 37, and the other end of the third rotary link 37 is rotatably connected to the first drive assembly 31.

[0051] In an embodiment of the present utility model, it is preferable that the first push rod motor 29 is in a half-open state when the dual motor elderly seat is in the sitting attitude of FIG. 6; 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 rotatably connected to the third rotary link 37, the third rotary link 37 is in turn rotatably connected to the first leg rest link 41, the first leg rest link 41 is rotatably connected to the second leg rest link 42, and the second leg rest link 42 is connected to the leg assembly 10, at this time, the leg assembly 10 in FIG. 6 is opened; at the same time, the third rotary link 37 is in turn rotatably connected to the second rotary link 36, the second rotary link 36 is rotatably connected to the first rotary link 35, and the first rotary link 35 is rotatably connected to the fixed link 34, the fixed link 34 is fixedly connected to the side plate 39, thereby the entire seat frame is lifted upward.

[0052] The above is merely a preferred embodiment of the present utility model, and it should be pointed out that for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present utility model, and these should also be regarded as the scope of protection of the present utility model, without affecting the effects of the implementation of the present utility model and the applicability of the patent.

Examples

Embodiment Construction

[0030]In order to make the objects, technical solutions and advantages of the present utility model more clear, the present utility model is described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031]The specific implementation of the present utility model is described in detail below with reference to specific embodiments.

[0032]As shown in FIGS. 1-7, a dual motor elderly seat extension device capable of providing a zero gravity attitude provided in one embodiment of the present utility model comprises:[0033]a leg assembly 10 provided with a large footrest 46;[0034]a base 28 provided with a seat lifting assembly 47;[0035]a first drive assembly 31 provided on the base 28, wherein a seat lifting link set 33 is connected to the first drive assembly 31, and the seat lifting link se...

Claims

1. A dual motor elderly seat extension device capable of providing a zero gravity attitude, comprising:a leg assembly provided with a large footrest;a base provided with a seat lifting assembly;a first drive assembly provided on the base and connected to a seat lifting link set, wherein the seat lifting link set is connected to the leg assembly by a connection assembly;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 drive assembly;a second drive assembly connected to one end of a second push rod motor;the second push rod motor, wherein the other end of the second push rod motor is connected to the base;a seat assembly connected to the first drive assembly by the seat assembly; anda back assembly fixedly connected to the second drive assembly.

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

3. The dual motor elderly seat extension device capable of providing a zero gravity attitude according to claim 2, wherein the back assembly comprises a backrest, the backrest is rotatably connected to the side plates, and the backrest is fixedly connected to the second drive assembly;an angle α between the backrest and the ground is 20° when the dual motor elderly seat extension device is in a zero gravity attitude; and a vertical distance H between a highest point of the large footrest and a highest point of the backrest is 444 mm.

4. The dual motor elderly seat extension device capable of providing a zero gravity attitude according to claim 1, wherein the first drive assembly is provided with a first waist groove and a second waist groove, the base is provided with a first connecting hole and a second connecting hole, the first connecting hole is matched with the first waist groove, and the second connecting hole is matched with the second waist groove.

5. The dual motor elderly seat extension device capable of providing a zero gravity attitude according to claim 2, wherein the seat lifting link set comprises a fixed link, a first rotary link, a second rotary link and a third rotary link, one end of the second rotary link is rotatably connected to the third rotary link, the other end of the second rotary link is rotatably connected to one end of the first rotary link, the other end of the first rotary link is rotatably connected to one end of the fixed link, and the other end of the fixed link is fixedly connected to the side plate.

6. The dual motor elderly seat extension device capable of providing a zero gravity attitude according to claim 5, wherein the connection assembly comprises a first leg rest link and a second leg rest link, wherein the first leg rest link is rotatably connected to the second leg rest link, the second leg rest link is connected to the leg assembly, the first leg rest link is rotatably connected to one end of the third rotary link, and the other end of the third rotary link is rotatably connected to the first drive assembly.

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