CN212591132U

CN212591132U - Seat frame driven by double motors and seat

Info

Publication number: CN212591132U
Application number: CN202021599569.1U
Authority: CN
Inventors: 李晓鸿; 罗震; 吕战征; 李元坤
Original assignee: Remacro Machinery and Technology Wujiang Co Ltd
Current assignee: Remacro Machinery and Technology Wujiang Co Ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-02-26
Anticipated expiration: 2030-08-05

Abstract

The utility model relates to a seat frame driven by double motors, which comprises a base frame, a lifting component, a driving component and a telescopic connecting rod component; the driving assembly comprises a first driving rod, and a first driving connecting piece is arranged on the first driving rod; the lifting connecting plate is respectively connected with the first driving rod, the driving assembly and the telescopic connecting rod assembly, a second driving connecting piece is arranged on the base frame, and the first driving connecting piece and the second driving connecting piece are used for being connected with a first driving motor; the back connecting rod assembly comprises a first back connecting rod assembly and a second back connecting rod assembly, the second back connecting rod assembly is connected with a third driving rod, the lifting connecting plate is further connected with a fourth driving rod, the third driving rod is provided with a third driving connecting piece, the fourth driving rod is provided with a fourth driving connecting piece, and the third driving connecting piece and the fourth driving connecting piece are used for being connected with a second driving motor. This application reduces elevating system weight and assembly error while, can also realize the effect of the seat frame structure of nimble regulation.

Description

Seat frame driven by double motors and seat

Technical Field

The utility model relates to the field of furniture, especially, relate to an adopt bi-motor driven seat frame and seat.

Background

The seat in the prior art can be changed in various postures, and further can realize the functions of lifting and the like so as to assist a weak user to stand up.

Old man's chair is firm for lift part structure among the prior art, increases the comfort level, adopts the installation of whole frame to adopt single motor to realize the change of these four gestures of position of sitting, TV appearance, the appearance of lying and the standing position, application number 201510965955.5 for example discloses an old man's chair mechanical device, and the drive structure of concrete lift is: the lifting frame is connected with the chassis through a twelfth rotating shaft, the lifting frame is connected with the lifting frame through a fourteenth rotating shaft, the lifting connecting rod is connected with the lifting frame and the chassis through a thirteenth rotating shaft and a fifteenth rotating shaft respectively, the welding connecting piece is connected with the lifting frame through a sixteenth rotating shaft, a limiting pad is arranged on the lifting frame, a seventh tangent plane is arranged on the chassis, and the limiting pad is matched with the seventh tangent plane. This application is when position of sitting and play to rise the state, and the third spacing bush on the back conversion connecting piece is tangent with the fourth looks tangent plane of back installed part, has realized firm stable spacing, has guaranteed the back stability of old man's chair sofa position of sitting state and play to rise the process, and is safe comfortable.

However, in order to stabilize the structure of the old people chair in the prior art, the whole frame adopted by the lifting mechanism of the old people chair is formed by welding, so that the assembly error is large, the structure is heavy, the lifting process can be realized only by providing large driving force, and in the posture transformation caused by the single motor driving, the limitation of angle transformation of each part cannot realize personalized adjustment according to the preference of a user.

Accordingly, it is desirable to provide a seat frame structure that can be flexibly adjusted while reducing the weight and assembly error of the lift mechanism.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an adopt two motor drive's seat frame and seat, its gesture through two motors difference control different parts simultaneously, and adopt a lift connecting plate to replace original complicated frame construction, not only reduced the weight of original seat frame and reduced assembly error, overall structure is stable and the cost of manufacture is low, still has the function of nimble regulation.

The technical effects of the utility model are through following realization:

the utility model provides a seat frame driven by double motors, which comprises a base frame, a lifting component, a driving component and a telescopic connecting rod component; the telescopic connecting rod assembly is connected with a foot connecting piece and a backrest connecting piece; the driving assembly is used for driving the telescopic connecting rod assembly under the driving of a first driving motor so as to change the telescopic state of the foot connecting piece and drive the lifting assembly to lift; and is used for driving the backrest connecting piece to carry out angle adjustment under the drive of a second motor; the driving assembly comprises a first driving rod, and a first driving connecting piece is arranged on the first driving rod;

the lifting assembly comprises a lifting connecting plate, the lifting connecting plate is respectively connected with the first driving rod, the driving assembly and the telescopic connecting rod assembly, a second driving connecting piece is arranged on the base frame, and the first driving connecting piece and the second driving connecting piece are used for being connected with a first driving motor;

the telescopic connecting rod assembly comprises a foot connecting rod assembly, a back connecting rod assembly and a middle connecting rod assembly, the back connecting rod assembly comprises a first back connecting rod assembly and a second back connecting rod assembly, the first back connecting rod assembly is connected with the foot connecting rod assembly through the middle connecting rod assembly, the second back connecting rod assembly is connected with a third driving rod, the lifting connecting plate is further connected with a fourth driving rod, the third driving rod is provided with a third driving connecting piece, the fourth driving rod is provided with a fourth driving connecting piece, and the third driving connecting piece and the fourth driving connecting piece are used for connecting a second driving motor.

Further, the lifting assembly comprises a lifting connecting plate, a first lifting connecting rod, a second lifting connecting rod and a supporting seat, the supporting seat is fixedly connected with the base frame, one end of the first lifting connecting rod is rotatably connected with one end of the second lifting connecting rod, and the other end of the first lifting connecting rod is rotatably connected with the lifting connecting plate.

Furthermore, the driving assembly also comprises a first driving connecting piece, a lifting connecting piece and a telescopic driving connecting piece; the lifting connecting piece is connected to two ends of the driving rod respectively, the lifting connecting piece is connected with the lifting connecting plate, two ends of the driving rod are further connected with the telescopic connecting rod assembly, the first back connecting rod assembly and the telescopic driving connecting piece are fixedly connected relatively or are of an integrated structure, and the telescopic driving connecting piece is fixedly connected with the lifting connecting plate.

Furthermore, both ends of the driving rod are provided with driving rod riveting sheets, the driving rod riveting sheets are fixedly connected with the lifting connecting sheets, and the lifting connecting sheets are respectively connected with the lifting connecting plate and the foot connecting rod assembly and used for driving the lifting of the lifting connecting plate and the stretching of the foot connecting rod assembly.

Further, the driving end of the telescopic driving connecting piece is riveted with the telescopic connecting rod component.

Further, two the supporting seat is located base frame's vertical underframe lateral surface, first lifting connecting rod is located the lateral surface of supporting seat, vertical underframe is used for spacing the first stable connecting rod minimum descending position.

Furthermore, a second stabilizing connecting rod is connected between the two lifting connecting plates, and the upper end of the supporting seat is used for limiting the lowest descending position of the second stabilizing connecting rod.

Furthermore, the first driving connecting piece is used for connecting a driving rod of a first driving motor, the second driving connecting piece is used for connecting a shell of the first driving motor, the third driving connecting piece is used for connecting a driving rod of a second driving motor, and the fourth driving connecting piece is used for connecting a shell of the second driving motor.

Further, the projections of the first drive connection, the second drive connection, the third drive connection, and the fourth drive connection in a horizontal plane do not overlap.

In addition, the present application also provides a seat comprising a backrest support portion, a foot support portion and a seat frame, the seat frame comprising a base frame, a lifting assembly, a drive assembly and a telescopic link assembly;

the foot supporting part and the foot connecting part, the backrest supporting part and the backrest connecting part, and the telescopic connecting rod assembly are connected with the foot connecting part and the backrest connecting part; the driving component is used for driving the telescopic connecting rod component to change the telescopic state of the foot connecting piece and driving the lifting component to lift; and is used for driving the backrest connecting piece to carry out angle adjustment under the drive of a second motor; the driving assembly comprises a first driving rod, and a first driving connecting piece is arranged on the first driving rod;

the driving assembly comprises a first driving rod, and a first driving connecting piece is arranged on the first driving rod;

As described above, the utility model discloses following beneficial effect has:

(1) the postures of different parts are respectively controlled by the two motors, and the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, the whole structure is stable, the manufacturing cost is low, and the flexible adjustment function is realized;

(2) each part connected with the lifting connecting plate is riveted, so that the positioning is more accurate, the installation error is smaller, and the overall structure matching is more accurate;

(3) through the direct actuating lever both ends with treat that actuating mechanism is connected, with stress point average distribution in both sides, the atress is more even, and the drive is more stable, has reduced the condition that the structure takes place to shake at the lift in-process.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic perspective view of a seat frame of the present invention in a sitting position;

FIG. 2 is a side view of the seat back connector after adjusting the angle thereof in a sitting position of the seat frame according to the embodiment of the present invention;

FIG. 3 is a side view of the seat frame in a recumbent position according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a portion of the seat frame in the TV state according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a part of the seat frame in the lying position according to the embodiment of the present invention;

fig. 6 is a schematic perspective view of a part of the lifting assembly in the standing position of the embodiment of the present invention;

fig. 7 is a side view of a part of the structure of the lifting assembly in the standing position according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

in the present embodiment, a seat frame with a function of ascending and inclining forward is provided, which can be used for a seat unit, in particular, a chair for an old people. Correspondingly, in the embodiment, the seat frame can change four postures, which respectively correspond to a sitting posture, a TV posture, a lying posture and a standing posture of the seat, wherein the sitting posture is a state when the seat is used daily, the leg part of the seat is contracted, the backrest is close to be vertical, and the seat is suitable for a user to sit down for rest daily, the TV posture is a state when the leg part of the seat is extended, correspondingly, the inclination angle of the backrest is unchanged or slightly inclined backwards, the seat frame is suitable for a user to be in a state of relaxing when the user watches television, and the lying posture is that the backrest is further inclined backwards and then descends, and the seat frame is suitable for the.

The seat frame driven by the double motors is characterized by comprising a base frame 1, a lifting assembly 2, a driving assembly 3 and a telescopic connecting rod assembly 4; the telescopic connecting rod component 4 is connected with a foot connecting piece 5 and a backrest connecting piece 6; the driving assembly 3 is used for driving the telescopic connecting rod assembly 4 to change the relative positions of the foot connecting piece 5 and the backrest connecting piece 6, and the driving assembly 3 is used for driving the lifting assembly 2 to lift; specifically, the driving assembly 3 is used for driving the telescopic connecting rod assembly 4 under the driving of a first driving motor to change the expansion and contraction of the foot connecting piece 5, and the driving assembly 3 is used for driving the lifting assembly 2 to lift and lower; and is used for driving the backrest connecting piece 6 to carry out angle adjustment under the drive of a second motor;

specifically, the driving assembly 3 includes a first driving rod 31, and a first driving connecting member 32 is disposed on the first driving rod 31;

the lifting assembly 2 comprises a lifting connecting plate 21, the lifting connecting plate 21 is respectively connected with the driving assembly 3 and the telescopic connecting rod assembly 4, a second driving connecting piece 11 is arranged on the base frame 1, and the first driving connecting piece 32 and the second driving connecting piece 11 are used for connecting a first driving motor;

telescopic link assembly 4 includes foot link assembly 41, back link assembly 42 and middle link assembly 43, back link assembly 42 includes first back link assembly 421 and second back link assembly 422, first back link assembly 421 links to each other with foot link assembly 41 through middle link assembly 43, second back link assembly 422 is connected with third drive rod 423, lift connecting plate 21 still is connected with fourth drive rod 424, third drive rod 423 is equipped with third drive connecting piece 425, fourth drive rod 424 is equipped with fourth drive connecting piece 426, third drive connecting piece 425 and fourth drive connecting piece 426 are used for connecting the second driving motor. Specifically, in this embodiment, the first driving connecting part 32 is used to connect a driving rod of the first driving motor, the second driving connecting part 11 is used to connect a housing of the first driving motor, the third driving connecting part 425 is used to connect a driving rod of the second driving motor, and the fourth driving connecting part 426 is used to connect a housing of the second driving motor, but the present invention is not limited to such a motor connection manner, and any connection manner that can realize that two corresponding driving rods are close to or far away from each other may fall within the protection scope of the present application. The postures of different parts are respectively controlled by the two motors, and an original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, the whole structure is stable, the manufacturing cost is low, and the flexible adjusting function is realized.

Specifically, in this embodiment, the lifting assembly 2 includes a lifting connection plate 21, a first lifting connection rod 22, a second lifting connection rod 23 and a support seat 25, the support seat 25 is fixedly connected to the base frame 1, one end of the first lifting connection rod 22 and one end of the second lifting connection rod 23 are respectively rotatably connected to the support seat 25, the other end of the first lifting connection rod 22 and the other end of the second lifting connection rod 23 are respectively rotatably connected to the lifting connection plate 21, the seat is switched from the sitting posture to the standing posture, in this case, the specific process is that the first motor push rod 71 drives the first driving rod 31 to move forward and upward through the first driving connection part 32, the first driving rod 31 drives one end of the lifting connection plate 21 to move through the lifting connection part 33, the lifting connection plate 21 is hinged to the first lifting connection rod 22 and the second lifting connection rod 23 at the same time, as can be known from fig. 7, the first lifting connection rod 22 and the second lifting connection rod, therefore, the lifting connecting plate 21 rises in a preset radian and drives the telescopic connecting rod assembly 4 connected to the lifting connecting plate 21 to rise together, the telescopic connecting rod assembly 4 is in a forward tilting state, and the first motor push rod 71 reaches the fourth position, so that a final standing posture is formed, and people such as the old with weak physical strength can stand up in a labor-saving manner.

Specifically, in this embodiment, the driving assembly 3 for driving further includes a first driving connection member 32, a lifting connection piece 33, and a telescopic driving connection member 34; the two ends of the first driving rod 31 are respectively connected with a lifting connecting sheet 33, the lifting connecting sheet 33 is connected with the lifting connecting plate 21, and the two ends of the first driving rod 31 are also connected with the telescopic connecting rod assembly 4. The method specifically comprises the following steps: both ends of the first driving rod 31 are provided with driving rod riveting pieces 311, the driving rod riveting pieces 311 are fixedly connected with the lifting connecting pieces 33, specifically, the driving rod riveting pieces are connected with bolts, or other fixing forms such as riveting can be adopted, and the lifting connecting pieces 33 are respectively connected with the lifting connecting plate 21 and the foot connecting rod assembly 41 and used for driving the lifting of the lifting connecting plate 21 and the stretching of the foot connecting rod assembly 41.

Further, the drive end of the telescopic drive connection 34 is rotationally riveted to the telescopic link assembly 4. The foot link assembly 41 specifically includes a first foot link 411, a second foot link 412, a third foot link 413, and a fourth foot link 414, where one end of each of the first foot link 411 and the second foot link 412 is hinged to the foot link 5, the other end of the first foot link 411 is hinged to one end of the third foot link 413, and the other end of the third foot link 413 is connected to the telescopic driving link 34; the other end of the second foot link 412 is hinged with one end of a fourth foot link 414, and the other end of the fourth foot link 414 is connected with the telescopic driving connecting piece 34; the telescopic driving connecting piece 34 is simultaneously connected with the middle connecting rod assembly 43, so that the first back connecting rod assembly 421 is connected with the foot connecting rod assembly 41 through the middle connecting rod assembly 43, and the whole telescopic connecting rod assembly 4 is connected with the lifting connecting plate 21, so that the whole frame can move by moving the lifting connecting plate 21 up and down; the lifting link 33 is connected to the lifting link plate 21 and the leg link assembly 41, respectively, and drives the lifting link plate 21 to move up and down and the leg link assembly 41 to extend and contract. The foot connecting rod assembly 41 can be contracted and extended by driving the lifting connecting piece 33 to transmit the motion to the foot connecting rod assembly 41, and the lifting connecting plate 21 can be driven by driving the lifting connecting piece 33 to lift the whole frame. In this embodiment, the telescopic driving connecting member 34 and the first back connecting rod assembly 421 are an integral structure and are fixed on the lifting connecting plate 21 together, but in other embodiments, they may be fixed relatively and fixed on the lifting connecting plate 21 respectively. With the arrangement, the posture change of the backrest is not influenced when the first driving motor is driven, the first driving motor is only used for driving the posture of the foot connecting rod assembly 41 and the lifting of the whole frame, and the backrest connecting piece 6 is driven by the second driving motor alone to change the reclining angle.

And furthermore, because the second back link assembly 422 of the backrest connecting piece 6 is connected with the third driving rod 423, the lifting connecting plate 21 is further connected with the fourth driving rod 424, the third driving rod 423 is provided with the third driving connecting piece 425, the fourth driving rod 424 is provided with the fourth driving connecting piece 426, the third driving connecting piece 425 and the fourth driving connecting piece 426 are used for connecting the second driving motor, so that the independent control of the pitch angle of the backrest connecting piece 6 can be realized, and the pitching angle of the backrest connecting piece 6 can be independently adjusted under the condition that the posture of the foot is stable, so as to adapt to different requirements of users. Fig. 2 is a side view of the seat frame according to the embodiment of the present invention after the backrest connecting member is adjusted in angle in the sitting posture, compared to the sitting posture of fig. 1, the backrest connecting member is adjusted in angle in a backward direction.

In this embodiment, the first driving connecting member 32 is hinged to one end of a first motor push rod 71 of the first driving motor 7, and a housing 72 of the first driving motor 7 is hinged to the base frame 1.

The first motor push rod 71 may be divided into a second position, a third position, and a fourth position according to the degree of contraction;

the second motor push rod is divided into an original position and a first position according to the contraction degree thereof.

The first motor push rod 71 and the second motor push rod can respectively correspond to four postures of the lying posture, the TV posture, the sitting posture and the standing posture of the chair according to the telescopic degrees of the first motor push rod and the second motor push rod.

When the first motor push rod 71 is located at the third position, namely when the sofa is in a sitting position, the foot connecting rod assembly 41 is in a contraction state, the first motor push rod 71 is driven to contract, the first drive rod 31 is driven to move towards the motor shell through the first drive connecting piece 32, the first drive rod 31 drives the contraction drive connecting rod assembly 34 to move, the foot connecting rod assembly 41 is changed from the contraction state to the extension state, and finally the first motor push rod 71 moves to the second position, so that the TV posture is adjusted; the second motor push rod is at the original position and is not contracted.

When the TV posture needs to be switched to the lying posture, further, the second motor push rod is driven to retract to the first position, and the backrest connecting piece 6 rotates backwards in the second back connecting rod assembly 422, so that a state suitable for a user to lie down, namely the lying posture, is finally formed.

In each different posture, the user can realize the reclining angle of the backrest connector 6 by controlling the second motor push rod of the second driving motor.

Further, in the present embodiment, the two support seats 25 are disposed on the outer side of the longitudinal bottom frame of the base frame 1, the first lifting link 22 is disposed on the outer side of the support seats 25, and the longitudinal bottom frame is used for limiting the lowest descending position of the first stabilizing link 24.

A second stabilizing connecting rod 35 is connected between the two lifting connecting plates 21, and the upper end of the supporting seat 25 is used for limiting the lowest descending position of the second stabilizing connecting rod 35. When the seat is switched back to the sitting posture from the standing posture, the first lifting connecting rod 22 is in the descending process, the first stabilizing connecting rod 24 does not descend after being collided with the vertical bottom frame, therefore, the first stabilizing connecting rod 24 not only increases the stability of the first lifting connecting rod 22, so that the first lifting connecting rod 22 cannot relatively shake in the moving process, the strength is higher, the limiting and supporting effects are simultaneously achieved, the descending lowest position of the first lifting connecting rod 22 is limited, the seat can be switched between the sitting posture, the TV posture and the lying posture, and the supporting force is stably provided by the structure below.

Further, in the present embodiment, in order to prevent the two motors from interfering during driving, the two motors are disposed in different spatial ranges, that is, the projections of the first drive link 32, the second drive link 11, the third drive link 425, and the fourth drive link 426 on the horizontal plane do not overlap.

Example 2:

in the present embodiment, a seat is provided, which includes a backrest support portion, a foot support portion and a seat frame, wherein the seat frame includes a base frame 1, a lifting assembly 2, a driving assembly 3 and a telescopic link assembly 4;

the foot supporting part and foot connecting piece 5, the backrest supporting part and backrest connecting piece 6 and the telescopic connecting rod assembly 4 are connected with the foot connecting piece 5 and the backrest connecting piece 6; the driving assembly 3 is used for driving the telescopic connecting rod assembly 4 to change the telescopic state of the foot connecting piece 5, and the driving assembly 3 is used for driving the lifting assembly 2 to lift;

the driving assembly 3 comprises a first driving rod 31, and a first driving connecting piece 32 is arranged on the first driving rod 31;

the lifting assembly 2 comprises a lifting connecting plate 21, the lifting connecting plate 21 is respectively connected with the first driving rod 31, the driving assembly 3 and the telescopic connecting rod assembly 4, a second driving connecting piece 11 is arranged on the base frame 1, and the first driving connecting piece 32 and the second driving connecting piece 11 are used for connecting a first driving motor;

telescopic link assembly 4 includes foot link assembly 41, back link assembly 42 and middle link assembly 43, back link assembly 42 includes first back link assembly 421 and second back link assembly 422, first back link assembly 421 links to each other with foot link assembly 41 through middle link assembly 43, second back link assembly 422 is connected with third drive rod 423, lift connecting plate 21 still is connected with fourth drive rod 424, third drive rod 423 is equipped with third drive connecting piece 425, fourth drive rod 424 is equipped with fourth drive connecting piece 426, third drive connecting piece 425 and fourth drive connecting piece 426 are used for connecting the second driving motor.

Specifically, the connection manner of the related components can refer to the connection manner of the seat frame in embodiment 1, and details are not repeated.

(1) the postures of different parts are respectively controlled by the two motors, and the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original frame and the assembly error are reduced, the whole structure is stable, the manufacturing cost is low, the assembly process is simplified, the manufacturing cost is reduced, and the flexible adjustment function is realized;

(2) each part connected with the lifting connecting plate is riveted, so that the positioning is more accurate, the installation error is smaller, and the overall structure matching is more accurate; all actions of the seat frame are integrated on a lifting connecting plate for riveting to serve as an independent module, and the pipe fittings are also independently used, so that the seat frame can be matched with other different bases more easily;

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The embodiments and features of the embodiments described herein above can be combined with each other without conflict.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. A seat frame driven by double motors is characterized by comprising a base frame (1), a lifting assembly (2), a driving assembly (3) and a telescopic connecting rod assembly (4); the telescopic connecting rod component (4) is connected with a foot connecting piece (5) and a backrest connecting piece (6); the driving component (3) is used for driving the telescopic connecting rod component (4) under the driving of a first driving motor so as to change the telescopic state of the foot connecting piece (5) and drive the lifting component (2) to lift; and is used for driving the backrest connecting piece (6) to carry out angle adjustment under the drive of a second motor;

the driving assembly (3) comprises a first driving rod (31), and a first driving connecting piece (32) is arranged on the first driving rod (31);

the lifting assembly (2) comprises a lifting connecting plate (21), the lifting connecting plate (21) is respectively connected with the driving assembly (3) and the telescopic connecting rod assembly (4), a second driving connecting piece (11) is arranged on the base frame (1), and the first driving connecting piece (32) and the second driving connecting piece (11) are used for being connected with a first driving motor;

telescopic link assembly (4) include foot link assembly (41), back link assembly (42) and middle link assembly (43), back link assembly (42) include first back link assembly (421) and second back link assembly (422), first back link assembly (421) through middle link assembly (43) with foot link assembly (41) link to each other, second back link assembly (422) are connected with third drive pole (423), lift connecting plate (21) still is connected with fourth drive pole (424), third drive pole (423) are equipped with third drive connecting piece (425), fourth drive pole (424) are equipped with fourth drive connecting piece (426), third drive connecting piece (425) with fourth drive connecting piece (426) are used for connecting second driving motor.

2. The seat frame using dual motor driving according to claim 1, wherein the lifting assembly (2) comprises a lifting connection plate (21), a first lifting link (22), a second lifting link (23) and a support base (25), the support base (25) is fixedly connected with the base frame (1), one end of the first lifting link (22) and one end of the second lifting link (23) are respectively rotatably connected with the support base (25), and the other end of the first lifting link (22) and the other end of the second lifting link (23) are respectively rotatably connected with the lifting connection plate (21).

3. The seat frame with dual motor drive according to claim 2, wherein the drive assembly (3) further comprises a first drive connection (32), a lifting connection pad (33) and a telescoping drive connection (34); lifting connection piece (33) is connected respectively at actuating lever (31) both ends, lifting connection piece (33) with lifting connection board (21) are connected, actuating lever (31) both ends still with flexible link assembly (4) are connected, first back link assembly (421) with flexible drive connecting piece (34) relatively fixed connection or structure as an organic whole, flexible drive connecting piece (34) with lifting connection board (21) fixed connection.

4. The seat frame driven by the double motors as claimed in claim 3, wherein the driving rod (31) is provided with driving rod riveting sheets (311) at both ends, the driving rod riveting sheets (311) are fixedly connected with the lifting connecting sheet (33), and the lifting connecting sheet (33) is respectively connected with the lifting connecting sheet (21) and the foot connecting rod assembly (41) for driving the lifting of the lifting connecting sheet (21) and the extension and retraction of the foot connecting rod assembly (41).

5. The seat frame with dual motor drive according to claim 4, characterized in that the drive end of the telescopic drive connection (34) is riveted to the telescopic link assembly (4).

6. The seat frame with dual motor drive according to claim 2, characterized in that the two support seats (25) are arranged on the outer side of the longitudinal bottom frame of the base frame (1), the first lifting link (22) is arranged on the outer side of the support seats (25), and the longitudinal bottom frame is used for limiting the lowest descending position of the first stabilizing link (24).

7. The seat frame using dual motor driving according to claim 6, wherein a second stabilizing link (35) is connected between the two lifting connection plates (21), and the upper end of the supporting seat (25) is used for limiting the lowest descending position of the second stabilizing link (35).

8. The seat frame with dual motor drive according to claim 1, wherein the first drive connection (32) is adapted to connect to a drive rod of a first drive motor, the second drive connection (11) is adapted to connect to a housing of a first drive motor, the third drive connection (425) is adapted to connect to a drive rod of a second drive motor, and the fourth drive connection (426) is adapted to connect to a housing of a second drive motor.

9. The seat frame employing dual motor drive according to claim 8, wherein projections of the first drive connection (32), the second drive connection (11), the third drive connection (425), and the fourth drive connection (426) in a horizontal plane do not overlap.

10. A seat, characterized by comprising a backrest support, a foot support and a seat frame, said seat frame comprising a base frame (1), a lifting assembly (2), a drive assembly (3) and a telescopic link assembly (4);

the telescopic connecting rod component (4) is connected with a foot connecting piece (5) and a backrest connecting piece (6); the driving component (3) is used for driving the telescopic connecting rod component (4) to change the telescopic state of the foot connecting piece (5) and driving the lifting component (2) to lift; and is used for driving the backrest connecting piece (6) to carry out angle adjustment under the drive of a second motor; the driving assembly (3) comprises a first driving rod (31), and a first driving connecting piece (32) is arranged on the first driving rod (31);

the lifting assembly (2) comprises a lifting connecting plate (21), the lifting connecting plate (21) is respectively connected with the first driving rod (31), the driving assembly (3) and the telescopic connecting rod assembly (4), a second driving connecting piece (11) is arranged on the base frame (1), and the first driving connecting piece (32) and the second driving connecting piece (11) are used for being connected with a first driving motor;