Seat frame and seat

Abstract

The application firstly provides a seat framework, which comprises a base support and a seat cushion support, a support frame is arranged between the base support and the seat cushion support, a universal mechanism is arranged between the front end of the support frame and the seat cushion support, and the rear end of the support frame is hinged to the base support; further comprising a front support adjusting mechanism, the front support adjusting mechanism comprises a front support adjusting rod and a front driving assembly, the upper end of the front support adjusting rod is hinged to the front end of the support frame, and the front driving assembly is used for driving the support adjusting rod to exert a jacking force on the front end of the support frame; the rear end of the base support is respectively provided with a rear support adjusting mechanism between both sides of the base support and the seat cushion support, and the two rear support adjusting mechanisms are used for independently adjusting the height of both sides of the rear end of the seat cushion support. The height of the seat cushion can be adjusted, and the front-back inclination angle and the left-right swing angle of the seat cushion can also be adjusted. The application further provides a seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seats, in particular to a seat framework and a seat. BACKGROUND

[0002] A seat is a sitting device with a backrest and sometimes with armrests. Most seats are supported by a seat framework. With the development of modern technology, more requirements are put forward for seats. For example, a seat backrest linkage device and a seat thereof are disclosed in Chinese Patent No. CN209186057U. In the seat, a person sitting on the seat exerts a downward gravity G on the seat, which drives the connecting rod mechanism to move the seat backrest. For another example, a height and angle adjusting integrated automobile seat is disclosed in Chinese Patent No. CN113942431A. In the seat, the height and angle of the seat cushion can be adjusted by the driving device between the seat cushion and the base and the connecting rod mechanism.

[0003] In summary, the development of technology puts forward higher requirements for the function and structure of seats. On the basis of meeting the comfort of sitting, the seat should have more degrees of freedom in structure to realize the controllability of different functions and meet different body feeling requirements. Therefore, the existing seat framework needs to be improved. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a seat framework and a seat that can adjust the height of the seat cushion and also adjust the forward and backward inclination angle and the left and right swing angle of the seat cushion.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The present application first provides a seat framework, which comprises a base support and a seat cushion support. A support frame is arranged between the base support and the seat cushion support. A universal mechanism is arranged between the front end of the support frame and the seat cushion support. The rear end of the support frame is hinged to the base support.

[0007] The front support adjusting mechanism comprises a front support adjusting rod and a front driving assembly. The upper end of the front support adjusting rod is hinged to the front end of the support frame. The front driving assembly is used to drive the support adjusting rod to exert a jacking force on the front end of the support frame.

[0008] The rear ends of the base support on both sides are respectively hinged to the seat cushion support. Rear support adjusting mechanisms are arranged between the rear ends of the base support on both sides and the seat cushion support. The two rear support adjusting mechanisms are used to independently adjust the height of the rear ends of the seat cushion support on both sides.

[0009] Further, the rear support adjusting mechanism comprises a rear support adjusting rod and a rear driving assembly, the upper end of the rear support adjusting rod is hinged to the rear end of the seat cushion support, and the rear driving assembly is used to drive the rear support adjusting rod to apply a jacking force to the seat cushion support.

[0010] Further, the rear driving assembly comprises a rear driving motor and a rear rotating plate, one end of the rear rotating plate is in transmission connection with the output shaft of the rear driving motor, and the other end is hinged to the lower end of the rear support adjusting rod.

[0011] Further, the rear support adjusting rod comprises a screw rod, an upper screw sleeve and a lower screw sleeve, the screw rod is provided with an upper threaded section and a lower threaded section matched with the upper screw sleeve and the lower screw sleeve respectively, the upper screw sleeve and the lower screw sleeve are arranged on the upper threaded section and the lower threaded section respectively, the upper end of the upper screw sleeve is hinged to the rear end of the support frame, and the lower end of the lower screw sleeve is hinged to one end of the rear rotating plate.

[0012] Further, the front driving assembly comprises a front driving motor and a front rotating plate, one end of the front rotating plate is in transmission connection with the output shaft of the front driving motor, and the other end is hinged to the lower end of the front support adjusting rod.

[0013] Further, the front support adjusting rod comprises a screw rod, an upper screw sleeve and a lower screw sleeve, the screw rod is provided with an upper threaded section and a lower threaded section matched with the upper screw sleeve and the lower screw sleeve respectively, the upper screw sleeve and the lower screw sleeve are arranged on the upper threaded section and the lower threaded section respectively, the upper end of the upper screw sleeve is hinged to the rear end of the support frame, and the lower end of the lower screw sleeve is hinged to one end of the front rotating plate.

[0014] Further, the armrest angle adjusting mechanism further comprises a fixed plate and a driving plate, the middle part of the driving plate is hinged to the fixed plate through the third hinged shaft, the upper end of the driving plate is hinged to the transmission plate, the lower end of the transmission plate is hinged to the fixed plate through the third hinged shaft, and one end of the second connecting rod is hinged to the fixed plate through the second hinged shaft.

[0015] Further, the armrest angle adjusting mechanism further comprises a fixed plate and a driving plate, the middle part of the driving plate is hinged to the fixed plate through the third hinged shaft, the upper end of the driving plate is hinged to the transmission plate, the lower end of the transmission plate is hinged to the fixed plate through the third hinged shaft, and one end of the second connecting rod is hinged to the fixed plate through the second hinged shaft.

[0016] Further, the armrest angle adjusting mechanism further comprises a driving assembly for driving the lower end of the driving plate to move forward and backward, the driving assembly comprising a first screw rod and a power assembly for driving the first screw rod to rotate, the first screw rod being provided with a first screw sleeve, the first screw sleeve being provided with a first connecting piece moving synchronously therewith, one end of the first connecting piece being hingedly connected with the lower end of the driving plate;

[0017] The power assembly comprises an armrest driving motor and a transmission device for transmissionally connecting the output shaft of the armrest driving motor with the first screw rod.

[0018] Further, the seat further comprises a seatback linkage mechanism, the seatback linkage mechanism comprising a seatback support and a transmission rod, the seatback support comprising two support rods respectively located at left and right sides, two ends of the transmission rod being respectively connected with the two support rods, the side where the two support rods are located being respectively provided with the armrest angle adjusting mechanism, the support rod being fixedly connected with the driven plate and rotating with the driven plate around the hinged point of the support rod and the fixed plate.

[0019] The application further provides a seat comprising the seat framework according to any one of the above.

[0020] The application has the following beneficial effects:

[0021] The seat framework of the application can drive the front end of the support frame to rotate around the hinged point of the support frame and the base support by the front support adjusting rod in the front support adjusting mechanism, thereby lifting the front end of the cushion support upward, so as to adjust the inclination angle of the cushion support in the front-back direction, and at the same time, lifting the rear end of the cushion support by the rear support adjusting mechanism can raise the overall height of the cushion support, thereby achieving the technical purpose of adjusting the height of the cushion.

[0022] The seat of the application can adjust the height of the seat cushion, and can also adjust the inclination angle and the swing angle of the seat cushion in the front-back direction and the left-right direction by setting the seat framework.

[0023] Other advantages, objects, and features of the application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art from a consideration of the following specification and drawings. The advantages of the application will be realized and attained by means of the instrumentalities pointed out in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to make the purposes, technical solutions and beneficial effects of the present application clearer, the present application is described below with the help of the following drawings:

[0025] Figure 1a It is a schematic view of the overall structure of the seat framework embodiment of the present application;

[0026] Figure 1b It is a schematic view of the overall structure of the seat framework embodiment of the present application (another view);

[0027] Figure 2 It is a schematic view of the overall structure of the seat framework embodiment of the present application; Figure 1a It is an enlarged schematic view of A in the figure;

[0028] Figure 3 It is a side view of the seat framework embodiment of the present application;

[0029] Figure 4 It is a schematic view of the support frame embodiment of the present application;

[0030] Figure 5 It is a schematic view of the front and rear support adjusting rods embodiment of the present application;

[0031] Figure 6a It is a schematic view of the armrest angle adjusting mechanism embodiment of the present application;

[0032] Figure 6b It is a schematic view of the armrest angle adjusting mechanism embodiment of the present application (another view);

[0033] Figure 7 It is a schematic view of the armrest and backrest linkage mechanism embodiment of the present application.

[0034] Explanation of reference signs:

[0035] 1 - base support; 2 - cushion support; 3 - support frame; 3a - support plate; 3b - front connecting rod; 3c - rear connecting rod; 4 - universal mechanism; 5 - connecting plate; 6 - front support adjusting rod; 7 - front drive motor; 8 - front rotating plate; 9 - rear support adjusting rod; 10 - rear drive motor; 11 - rear rotating plate; 12 - armrest; 13 - fixed plate; 14 - drive plate; 15 - transmission plate; 16 - first connecting rod; 17 - second connecting rod; 18 - armrest rotating shaft; 19 - first hinged shaft; 20 - arc-shaped track; 21 - second hinged shaft; 22 - first lead screw; 23 - first screw sleeve; 24 - first connecting piece; 25 - armrest drive motor; 26 - gear box; 27 - backrest support; 27a - backrest support body; 27b - headrest support; 28 - transmission rod; 29 - support rod; 30 - second lead screw; 31 - second screw sleeve; 32 - second connecting piece; 33 - headrest connecting rod; 34 - headrest connecting plate; 35 - hinged connecting plate; 36 - headrest drive motor; 37 - roller; 38 - third hinged shaft. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0037] Example 1 - Seat Frame

[0038] like Figure 1a and Figure 1b The figures shown are schematic diagrams of the seat frame of this embodiment from two different perspectives. The seat frame of this embodiment includes a base support 1 and a seat cushion support 2. A support frame 3 is provided between the base support 1 and the seat cushion support 2. A universal joint 4 is provided between the front end of the support frame 3 and the seat cushion support 2. The rear end of the support frame 3 is hinged to the base support 1. Figure 4 As shown in the figure, in this embodiment, the support frame 3 includes two parallel support plates 3a on the left and right sides. The support plates 3a are U-shaped profiles. A front connecting rod 3b and a rear connecting rod 3c are respectively provided between the front end and the rear end of the support plates 3a. The two ends of the front connecting rod 3b and the rear connecting rod 3c are rotatably engaged with the support plates 3a. In this embodiment, the universal mechanism 4 is provided in the middle of the front connecting rod 3b. A connecting plate 5 is provided on the universal mechanism 4. The upper end of the front support adjusting rod 6 is hinged to the connecting plate 5.

[0039] like Figure 3 As shown, it also includes a front support adjustment mechanism, which includes a front support adjustment rod 6 and a front drive assembly. The upper end of the front support adjustment rod 6 is hinged to the front end of the support frame 3. In this embodiment, the upper end of the front support adjustment rod 6 is hinged to the front end of the support frame 3 through a connecting plate 5 set on the universal mechanism 4. The front drive assembly is used to drive the support adjustment rod to apply a lifting force to the front end of the support frame 3. Specifically, as shown... Figure 3 As shown in the figure, the front drive assembly of this embodiment includes a front drive motor 7 and a front rotating plate 8. One end of the front rotating plate 8 is connected to the output shaft of the front drive motor 7, and the other end is hinged to the lower end of the front support adjusting rod 6.

[0040] Two rear support adjustment mechanisms are respectively provided between the rear ends of the base bracket 1 and the seat cushion bracket 2. The two rear support adjustment mechanisms are used to independently adjust the height of the rear ends of the seat cushion bracket 2. Specifically, as shown in the figure, the rear support adjustment mechanism in this embodiment includes a rear support adjustment rod 9 and a rear drive assembly. The upper end of the rear support adjustment rod 9 is hinged to the rear end of the seat cushion bracket 2. The rear drive assembly is used to drive the rear support adjustment rod 9 to apply a lifting force to the seat cushion bracket 2. In this embodiment, the rear drive assembly includes a rear drive motor 10 and a rear rotating plate 11. One end of the rear rotating plate 11 is connected to the output shaft of the rear drive motor 10, and the other end is hinged to the lower end of the rear support adjustment rod 9.

[0041] likeFigure 5 As shown in the diagram, in this embodiment, the front support adjusting rod 6 includes a screw, an upper threaded sleeve, and a lower threaded sleeve. The screw has an upper threaded section and a lower threaded section that match the upper and lower threaded sleeves, respectively. The upper and lower threaded sleeves are respectively disposed on the upper and lower threaded sections. The upper end of the upper threaded sleeve is hinged to the rear end of the support frame 3, and the lower end of the lower threaded sleeve is hinged to one end of the front rotating plate 8. Similarly, in this embodiment, the rear support adjusting rod 9 includes a screw, an upper threaded sleeve, and a lower threaded sleeve. The screw has an upper threaded section and a lower threaded section that match the upper and lower threaded sleeves, respectively. The upper and lower threaded sleeves are respectively disposed on the upper and lower threaded sections. The upper end of the upper threaded sleeve is hinged to the rear end of the support frame 3, and the lower end of the lower threaded sleeve is hinged to one end of the rear rotating plate 11. That is, in this embodiment, the front support adjusting rod 6 and the rear support adjusting rod 9 can use the same components. The total length of the front support adjusting rod 6 and the rear support adjusting rod 9 can be adjusted by manually adjusting the positions of the upper and lower threaded sleeves on the corresponding threaded sections.

[0042] like Figure 6a and 6b As shown in the figure, the seat frame of this embodiment also includes an armrest angle adjustment mechanism for adjusting the armrest angle. In this embodiment, the armrest angle adjustment mechanism includes an armrest 12, a fixing plate 13, a drive plate 14, a transmission plate 15, a first connecting rod 16, and a second connecting rod 17. An armrest pivot 18 is provided on the armrest 12. In this embodiment, the armrest pivot 18 is perpendicular to the armrest 12. One end of the first connecting rod 16 is connected to the armrest pivot 18, and the first connecting rod 16 rotates synchronously with the armrest pivot 18. The other end of the first connecting rod 16 is hinged to one end of the second connecting rod 17 through a first hinge shaft 19. The transmission plate 15 is provided with an arc-shaped track 20. The first hinge shaft 19 is slidably engaged with the arc-shaped track 20. The lower end of the transmission plate 15 is hinged to the second hinge shaft 21, and the other end of the second connecting rod 17 is hinged to the third hinge shaft 38. The two second hinge shafts 21 are parallel to each other. The middle part of the drive plate 14 is hinged to the fixed plate 13 via the second hinge shaft 21. The upper end of the drive plate 14 is hinged to the transmission plate 15, and the lower end of the transmission plate 15 is hinged to the fixed plate 13 via the second hinge shaft 21. One end of the second connecting rod 17 is hinged to the fixed plate 13 via the second hinge shaft 21. In this embodiment, the first hinge shaft 19, the second hinge shaft 21, and the third hinge shaft 38 are all hinged using stepped screws for easy installation.

[0043] like Figure 6a and 6bAs shown in FIG. 1, the armrest angle adjusting mechanism of the embodiment further comprises a driving assembly for driving the lower end of the driving plate 14 to move forward and backward, the driving assembly comprising a first lead screw 22, a first screw sleeve 23 arranged on the first lead screw 22, a first connecting piece 24 arranged on the first screw sleeve 23 and moving synchronously with the first screw sleeve 23, and one end of the first connecting piece 24 being hingedly connected to the lower end of the driving plate 14. The driving assembly further comprises a power assembly for driving the first lead screw 22 to rotate. In the embodiment, the power assembly comprises an armrest driving motor 25 and a transmission device for transmissionally connecting the output shaft of the armrest driving motor 25 and the first lead screw 22. In the embodiment, the output shaft of the armrest driving motor 25 and the first lead screw 22 are transmissionally connected through a gear box 26.

[0044] As shown in FIG. 1, Figure 7 As shown in FIG. 1, the seat framework of the embodiment further comprises an armrest-backrest linkage mechanism, the armrest-backrest linkage mechanism comprising a backrest support 27 and a transmission rod 28, both ends of the transmission rod 28 being connected to two support rods 29 respectively. In the embodiment, both ends of the transmission rod 28 are flat-shaped, facilitating welding connection or bolt connection with the support rods 29. The two support rods 29 are arranged on the sides respectively provided with angle adjusting mechanisms, one end of which is a driving side and the other end is a driven side, so that the armrest angle adjusting mechanism of the driving side can drive the armrest angle adjusting mechanism of the driven side to operate synchronously. In the embodiment, the two support rods 29 are connected to the inner sides of the two transmission plates 15 on the left and right sides respectively, facilitating arrangement of components. The armrest-backrest linkage mechanism of the embodiment can drive the support rods 29 to rotate synchronously when the transmission plates 15 rotate about the hinge points with the fixed plate 13, thereby driving the backrest support 27 to rotate synchronously, achieving the technical purpose of linkage of the armrest 12 and the backrest, and increasing the comfort of the seat.

[0045] In addition, the backrest support 27 of the embodiment comprises a backrest support body 27a, a headrest support 27b being arranged on the backrest support body 27a, and a headrest angle adjusting mechanism being arranged between the backrest support body 27a and the headrest support 27b for adjusting the angle of the headrest support 27b. The headrest support 27b can be adjusted to a suitable angle, thereby increasing the comfort of the seat.

[0046] Specifically, as shown in FIG. 1, Figure 1bAs shown in the figure, the headrest angle adjusting mechanism of the embodiment comprises a second screw rod 30 arranged on the backrest support body 27a, a second screw sleeve 31 arranged on the second screw rod 30, a second connecting piece 32 arranged on the second screw sleeve 31 and moving synchronously with the second screw sleeve 31, a headrest connecting rod 33 and a headrest connecting plate 34 arranged on the headrest support 27b, both ends of the headrest connecting rod 33 being rotationally fitted with the headrest support 27b, the second connecting piece 32 being hingedly connected with the headrest connecting rod 33, in the embodiment, a hinged connecting plate 35 being arranged on the headrest connecting rod 33 and rotating synchronously with the headrest connecting rod 33, an end of the second connecting piece 32 being hingedly connected with one end of the hinged connecting plate 35, and one end of the headrest connecting plate 34 being hingedly connected with the backrest support body 27a; the headrest driving motor 36 is arranged for driving the second screw rod 30 to rotate, and the gear box 26 is arranged between the headrest driving motor 36 and the second screw rod 30 for transmission. In the embodiment, two headrest connecting plates 34 are arranged on the left and right sides of the headrest support 27b, one end of each of the two headrest connecting plates 34 being hingedly connected with the left and right ends of the backrest support body 27a, respectively, to improve the stability. The angle of the headrest support 27b can be automatically adjusted by the headrest driving motor 36, and the comfort of the seat is improved.

[0047] The process of adjusting the front and rear angle of the seat skeleton cushion support of the embodiment is as follows:

[0048] The front driving motor 7 drives the front rotating plate 8 to rotate and drives the front support adjusting rod 6 to exert an upward jacking force on the front end of the support frame 3, and the support frame 3 rotates (the front end is lifted upward) around the hinge point of the support frame 3 and the base support 1 under the jacking action of the front support adjusting rod 6, and the front end of the cushion support frame 2 is lifted upward, thereby achieving the technical purpose of adjusting the front and rear angle of the cushion support frame.

[0049] The process of adjusting the height of the cushion of the seat skeleton of the embodiment is as follows:

[0050] Raising the cushion: the front driving motor 7 drives the front rotating plate 8 to rotate and drives the front support adjusting rod 6 to exert an upward jacking force on the front end of the support frame 3, and the support frame 3 rotates (the front end is lifted upward) around the hinge point of the support frame 3 and the base support 1 under the jacking action of the front support adjusting rod 6, and at the same time, the two rear driving motors 10 respectively drive the two rear support adjusting rods 9 to exert an upward jacking force on the rear end of the cushion support frame, and the rear end of the cushion support frame 2 is lifted upward under the jacking force, thereby achieving the technical purpose of adjusting the height of the cushion support frame.

[0051] Lowering the cushion: on the basis of the above-mentioned raising of the cushion, the rotating directions of the front driving motor 7 and the two rear driving motors 10 are controlled to be opposite.

[0052] The process of adjusting the left and right swing angle of the cushion support frame of the seat skeleton of the embodiment is as follows:

[0053] The rear drive motor 10 on one side below the cushion support 2 drives the corresponding rear support adjusting rod 9 to exert a jacking force on this side of the cushion support 2, and the rear drive motor 10 on the other side drives the corresponding rear support adjusting rod 9 to move downward, so that the cushion support 2 can swing in the left-right direction with the universal mechanism 4 as the rotation point.

[0054] The armrest angle adjustment process of the seat framework of the embodiment is as follows:

[0055] The output shaft of the first drive motor 25 drives the first lead screw 22 to rotate under the transmission action of the gear box 26, the first nut 23 moves linearly along the axis direction of the first lead screw 22 and drives the first connecting piece 24 to move synchronously, the first connecting piece 24 drives the driving plate 14 to rotate with the second hinge shaft 21 as the hinge point and drives the transmission plate 15 to rotate with the second hinge shaft 21 as the hinge point, the arc-shaped track 20 on the transmission plate 15 drives the first hinge shaft 19 to move and drives the first connecting rod 16 to rotate, the first connecting rod 16 drives the armrest rotating shaft 18 and the armrest 12 to rotate synchronously, thereby achieving the technical effect of adjusting the armrest angle.

[0056] The headrest support angle adjustment process of the embodiment is as follows:

[0057] The output shaft of the second drive motor 36 drives the second lead screw 30 to rotate under the transmission action of the gear box 26, the second nut 31 moves linearly along the axis direction of the second lead screw 30 and drives the second connecting piece 32 to move synchronously, the second connecting piece 32 drives the hinge connecting plate 35 and the headrest connecting rod 33 to rotate around the axis of the headrest connecting rod 33 during the movement, and the headrest connecting rod 33 drives the headrest support 27b to rotate around one end of the headrest connecting plate 34, thereby achieving the technical effect of adjusting the angle of the headrest support 27b.

[0058] Of course, the above functions can be selected and used, or multiple functions can be combined at the same time, so that the seat can adjust different postures, and the user can experience different seat feelings.

[0059] In addition, as shown in the figure, the base support 1 of the embodiment is provided with a roller 37 below. It is convenient to transfer.

[0060] Embodiment 2-seats

[0061] The embodiment proposes a seat, which comprises a seat framework as described in embodiment 1. By arranging the above-mentioned seat framework, the height of the seat cushion can be adjusted, and the inclination angle and the left-right swing angle of the seat cushion in the front-rear direction can also be adjusted.

[0062] The seat of the embodiment can be used at home, in a car, or in various entertainment and leisure places such as shopping malls.

[0063] The above-described embodiments are merely preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitutions or transformations made by those skilled in the art based on the present application are within the protection scope of the present application. The protection scope of the present application is subject to the claims.

Claims

1. A seat frame, characterized in that: It includes a base bracket and a seat cushion bracket, with a support frame between the base bracket and the seat cushion bracket. A universal mechanism is provided between the front end of the support frame and the seat cushion bracket, and the rear end of the support frame is hinged to the base bracket. It also includes a front support adjustment mechanism, which includes a front support adjustment rod and a front drive assembly. The upper end of the front support adjustment rod is hinged to the front end of the support frame through a connecting plate set on the universal mechanism. The front drive assembly is used to drive the support adjustment rod to apply a lifting force to the front end of the support frame in order to adjust the height of the front end of the seat cushion support. The two rear support adjustment mechanisms are respectively provided between the rear ends of the base bracket and the seat cushion bracket. The two rear support adjustment mechanisms are used to independently adjust the height of the rear ends of the seat cushion bracket.

2. The seat frame according to claim 1, characterized in that: The rear support adjustment mechanism includes a rear support adjustment rod and a rear drive assembly. The upper end of the rear support adjustment rod is hinged to the rear end of the seat cushion support. The rear drive assembly is used to drive the rear support adjustment rod to apply a lifting force to the seat cushion support.

3. The seat frame according to claim 2, characterized in that: The rear drive assembly includes a rear drive motor and a rear rotating plate. One end of the rear rotating plate is connected to the output shaft of the rear drive motor, and the other end is hinged to the lower end of the rear support adjusting rod.

4. The seat frame according to claim 3, characterized in that: The rear support adjusting rod includes a screw, an upper threaded sleeve, and a lower threaded sleeve. The screw has an upper threaded section and a lower threaded section that respectively match the upper threaded sleeve and the lower threaded sleeve. The upper threaded sleeve and the lower threaded sleeve are respectively disposed on the upper threaded section and the lower threaded section. The upper end of the upper threaded sleeve is hinged to the rear end of the support frame, and the lower end of the lower threaded sleeve is hinged to one end of the rear rotating plate.

5. The seat frame according to claim 1, characterized in that: The front drive assembly includes a front drive motor and a front rotating plate. One end of the front rotating plate is connected to the output shaft of the front drive motor, and the other end is hinged to the lower end of the front support adjusting rod.

6. The seat frame according to claim 5, characterized in that: The front support adjusting rod includes a screw, an upper threaded sleeve, and a lower threaded sleeve. The screw has an upper threaded section and a lower threaded section that respectively match the upper threaded sleeve and the lower threaded sleeve. The upper threaded sleeve and the lower threaded sleeve are respectively disposed on the upper threaded section and the lower threaded section. The upper end of the upper threaded sleeve is hinged to the rear end of the support frame, and the lower end of the lower threaded sleeve is hinged to one end of the front rotating plate.

7. The seat frame according to any one of claims 1-6, characterized in that: It also includes an armrest angle adjustment mechanism for adjusting the armrest angle. The armrest angle adjustment mechanism includes an armrest, a transmission plate, a first connecting rod, and a second connecting rod. The armrest is provided with an armrest pivot, which is rotatably engaged with the transmission plate. One end of the first connecting rod is connected to the armrest pivot and rotates synchronously with the armrest pivot. The other end of the first connecting rod is hinged to the second connecting rod through a first hinge shaft. The transmission plate is provided with an arc-shaped track, and the first hinge shaft is slidably engaged with the arc-shaped track. The lower end of the transmission plate is hinged to a second hinge shaft, and the other end of the second connecting rod is hinged to a third hinge shaft. The second and third hinge shafts are parallel to each other.

8. The seat frame according to claim 7, characterized in that: The armrest angle adjustment mechanism further includes a fixed plate and a drive plate. The middle part of the drive plate is hinged to the fixed plate through the third hinge shaft. The upper end of the drive plate is hinged to the transmission plate. The lower end of the transmission plate is hinged to the fixed plate through the third hinge shaft. One end of the second connecting rod is hinged to the fixed plate through the second hinge shaft.

9. The seat frame according to claim 8, characterized in that: The armrest angle adjustment mechanism further includes a drive assembly for driving the lower end of the drive plate to move back and forth. The drive assembly includes a first lead screw and a power assembly for driving the first lead screw to rotate. The first lead screw is provided with a first threaded sleeve, and the first threaded sleeve is provided with a first connecting member that moves synchronously with it. One end of the first connecting member is hinged to the lower end of the drive plate. The power assembly includes a handrail drive motor and a transmission device for connecting the output shaft of the handrail drive motor to the first lead screw drive.

10. The seat frame according to claim 8 or 9, characterized in that: It also includes an armrest and backrest linkage mechanism, which includes a backrest support and a transmission rod. The backrest support includes two support rods located on the left and right sides respectively. The two ends of the transmission rod are connected to the two support rods respectively. The armrest angle adjustment mechanism is provided on the side where the two support rods are located. The support rod is fixed to the driven plate and rotates with the driven plate around the hinge point between it and the fixed plate.

11. A type of seat, characterized in that: Includes the seat frame as described in any one of claims 1-10.

Images