Comfortable large space seat frame

Abstract

The present invention relates to a comfortable large-space seat frame, including a base frame, a front-to-back movable frame module connected to the base frame, a height-adjustable seat frame module and a rear transverse tube connected to the front-to-back movable frame module, and a backrest frame module and a height-adjustable seat frame module connected to the rear transverse tube; a rear swing arm is rotatably fixed to the front-to-back movable frame module through a first hinge point, a high-adjustable motor assembly is fixed to the height-adjustable seat frame module, a seat basin liftable module is arranged on the height-adjustable seat cushion frame module, and the seat basin liftable module includes a seat basin body, and third hinge points are arranged at both ends of the seat basin body. This new type of seat frame structure can be used to place water cups, beverages, etc. after being folded, and the liquid in the water cups or beverages will not overflow due to tilting, further broadening the application function in the narrow space of the car, and the seat basin liftable module can meet the different sitting postures of users and enhance the user experience.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing automobile parts, in particular to a comfortable large-space seat frame. Background Art

[0002] With the development of society and the improvement of people's economic level, the popularity of cars is getting higher and higher. As a large-scale means of transportation, cars are composed of many parts, and car seats are one of them. The main function of car seats is to improve the comfort and safety of drivers or passengers, and the keel of car seats provides safe and stable support for the entire seat, and is accompanied by functions such as forward and backward movement and flipping.

[0003] Chinese patent application publication number: CN109910695A, patent title: A foldable car seat, which describes the technical problem in the prior art that "

[0002] there is currently no car seat on the market that can be flipped and folded flat for the passenger seat, and for vehicles that need to carry cargo, the space on the passenger seat cannot be used."

[0004] Chinese patent application publication number: CN117124944A, patent title: A seat-back linkage mechanism for an automobile, which discloses "

[0006] A seat-back linkage mechanism for an automobile, comprising a symmetrically arranged driving link connected to a backrest frame, a linkage lever connected to the driving link, a lifting link connected to the linkage lever, and a support plate arranged between the two lifting links for supporting a seat cushion, wherein the other end of the lifting link is rotatably connected to the seat cushion frame, and when the backrest rotates backward, the driving lever moves downward and then drives the linkage lever, and the linkage lever pushes the lifting link upward, and the rear part of the seat cushion is lifted and raised as the backrest rotates backward." The technical effect of "

[0015] 1. A seat-back linkage mechanism for an automobile seat of the present invention, wherein the seat cushion is linked to the backrest, greatly reduces the height difference between the seat cushion and the backrest after the backrest is laid flat, and the backrest break can be controlled within 20 mm, thereby significantly improving the riding comfort of the occupants" is achieved.

[0005] However, it can be seen from the attached figure that if the backrest is flipped forward to the lowest limit, there is still a certain angle between the back of the entire backrest frame and the horizontal line. Figure 6 If the car seat can be completely horizontal after being flipped over, a flat plate can be placed on it to hold cups, drinks, etc., without liquid spilling due to tilting, which can further expand the application functions in the narrow space of the car, so it needs to be improved. Summary of the invention

[0006] The object of the present invention is to provide a comfortable large-space seat frame to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical measures: a comfortable large-space seat frame, including a base frame fixedly connected to a car body, a forward and backward movable frame module with a forward and backward movable motor is connected to the base frame through a movable component, and its characteristics are: a height-adjustable seat cushion frame module is connected to the front of the forward and backward movable frame module through a front swing arm, and a rear cross tube is connected to the rear of the forward and backward movable frame module through a rear swing arm, and the rear cross tube is fixedly connected to a backrest frame module and a height-adjustable seat cushion frame module; the rear swing arm is rotatably fixed to the forward and backward movable frame module through a first hinge point, and a high-adjust motor assembly is fixed to the height-adjustable seat cushion frame module, and the high-adjust motor assembly consists of a high-adjust motor body, a high-adjust screw and a telescopic tube, and the height-adjustable seat cushion The skeleton module includes a horizontal square tube, the high-adjustment motor body is fixedly mounted on the horizontal square tube, one end of the high-adjustment screw is connected to the high-adjustment motor body, and the other end of the high-adjustment screw is rotatably connected to the second hinge point of the rear swing arm; the height-adjustable seat cushion skeleton module is provided with a seat basin liftable module, the seat basin liftable module includes a seat basin body, the seat basin liftable module includes a lifting motor fixed on the horizontal square tube, a lifting screw is provided on the lifting motor, a lifting swing arm is rotatably fixed to the other end of the lifting screw, and the lifting swing arm is fixedly connected to a lifting cross bar, both ends of the lifting cross bar respectively extend into lifting cavities provided at both ends of the seat basin body, and both ends of the seat basin body are provided with third hinge points rotatably fixed to the height-adjustable seat cushion skeleton module.

[0008] Compared with the prior art, the advantages of the present invention are that the four components of the front-to-back movable frame module, the front swing arm, the rear swing arm and the height-adjustable cushion frame module together form a planar linkage mechanism. When the backrest frame module flips to the limit, that is, when it hits the height-adjustable cushion frame module, the backrest is still in a tilted state. Under the push of the high-adjustment motor assembly, the rear swing arm rotates around the first hinge point, and the backrest frame module and the height-adjustable cushion frame module are flipped as a whole until the back of the backrest frame module is in a horizontal state. Moreover, the seat basin liftable module set on the height-adjustable cushion frame module can rotate around the third hinge point, and the user can adjust it to meet his or her favorite sitting posture.

[0009] This new seat frame structure can be placed horizontally after being folded to place water cups, drinks, etc., without the liquid in the cups or drinks spilling out due to the tilt. At the same time, it increases the use space of the car and broadens the application functions of the car. Moreover, the liftable seat basin module can meet the different sitting postures of users and enhance the user's comfort experience.

[0010] As an improvement of the present invention, the front-to-back movable frame module includes a left front-to-back movable side panel assembly and a right front-to-back movable side panel assembly symmetrically arranged on both sides, and the first hinge point of the rear swing arm is rotatably connected to the left front-to-back movable side panel assembly and the right front-to-back movable side panel assembly. The purpose of selecting this design: the first hinge point of the rear swing arm is used as the rotation base point of the entire seat set, and the positions of the backrest frame module and the height-adjustable seat cushion frame module are relatively fixed and can be flipped as a whole.

[0011] As an improvement of the present invention, the first hinge point is set at the middle position of the rear swing arm, the second hinge point is set at one end of the rear swing arm, and the other end of the rear swing arm is provided with a semicircular notch. The purpose of selecting this design: the first hinge point is set at the middle position of the rear swing arm, and it is rotatably connected to the left front and rear movable side panel assembly and the right front and rear movable side panel assembly (the left and right rear swing arms), the first hinge point serves as the rotation base point, the second hinge point is connected to the telescopic tube, and the semicircular notch is connected to the backrest frame module, etc., and the three form a lever structure.

[0012] As an improvement of the present invention, the backrest frame module includes a backrest motor as a power source, the backrest motor is connected to a recliner synchronization rod, and electric recliners are arranged at both ends of the recliner synchronization rod. The purpose of selecting this design is that when the backrest motor is working, it can rotate and synchronously drive the recliner synchronization rod to rotate, and the recliner synchronization rod is meshingly connected to the electric recliner, synchronously driving the electric recliner to rotate.

[0013] As an improvement of the present invention, one end of the electric recliner is fixedly connected to the backrest lower plate assembly, and the other end of the electric recliner is fixedly connected to the backrest upper plate assembly, and the backrest lower plate assembly is fixedly connected to the front-rear movable skeleton module. The purpose of selecting this design: through the rotation of the electric recliner, the backrest upper plate assembly can be rotated around the axis of the electric recliner, wherein the backrest lower plate assembly is fixedly connected to the front-rear movable skeleton module and will not rotate.

[0014] As an improvement of the present invention, a concave curved surface is provided on the body of the rear swing arm. The purpose of selecting this design is to increase the strength of the rear swing arm.

[0015] As an improvement of the present invention, an upper hinge hole is provided at one end of the front swing arm, and a lower hinge hole is provided at the other end of the front swing arm, and the lower hinge hole is rotatably connected to the left front-to-back movable side panel assembly and the right front-to-back movable side panel assembly. The purpose of selecting this design is to rotatably and fixedly connect the seat cushion side panel of the height-adjustable seat cushion frame module through the upper hinge hole, and to rotatably and fixedly connect the seat cushion side panel of the left front-to-back movable frame module through the lower hinge hole.

[0016] As an improvement of the present invention, the height-adjustable seat frame module is provided with left-right symmetrical seat side panels, and the third hinge point of the seat basin body is hinged on the seat side panels. The purpose of selecting this design is to allow the seat basin body to rotate around the third hinge point, so that the seat basin can be lifted, so that the user's thighs can be lifted, and the comfort experience of the car seat can be met by users of different heights.

[0017] As an improvement of the present invention, the forward and backward moving motor is replaced by a manual crank. The purpose of selecting this design is to replace electric with manual to reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a stereoscopic diagram of the comfortable large-space seat frame described in the present invention.

[0021] Figure 2 It is a stereoscopic diagram of the forward and backward movable skeleton module described in the present invention.

[0022] Figure 3 It is a three-dimensional diagram of the backrest frame module described in the present invention.

[0023] Figure 4 It is a three-dimensional diagram of the height-adjustable seat cushion frame module described in the present invention.

[0024] Figure 5 This is a front perspective view of the liftable bidet module described in the present invention.

[0025] FIG. 6 is a schematic diagram of a backrest frame after flipping over in the prior art described in the present invention.

[0026] FIG. 7 is a schematic diagram of the backrest frame after flipping over in the embodiment of the present invention.

[0027] Figure 8 This is a rear perspective view of the liftable bidet module described in the present invention.

[0028] Fig. 9 This is an exploded view of the high-profile motor assembly described in the present invention.

[0029] Fig.10 It is a stereoscopic view of the rear swing arm described in the present invention.

[0030] Fig.11 It is a stereoscopic view of the front swing arm described in the present invention.

[0031] Explanation of reference numerals: 1. chassis; 2. movable assembly; 3. front-to-rear moving motor; 4. front-to-rear moving frame module; 5. front swing arm; 6. height-adjustable seat frame module; 7. rear swing arm; 8. rear cross tube; 9. backrest frame module; 10. first hinge point; 11. high-adjust motor assembly; 12. high-adjust motor body; 13. high-adjust screw; 14. telescopic tube; 15. horizontal square tube; 16. second hinge point; 17. seat basin liftable module; 18. seat basin body; 19. lift motor; 20. lift screw Rod; 21. Lifting swing arm; 22. Lifting cavity; 23. Third hinge point; 24. Left front and rear moving side panel assembly; 25. Right front and rear moving side panel assembly; 26. Semicircular notch; 27. Backrest motor; 28. Recliner synchronization rod; 29. ​​Electric recliner; 30. Backrest lower panel assembly; 31. Backrest upper panel assembly; 32. Concave curved surface; 33. Upper hinge hole; 34. Lower hinge hole; 35. Lifting cross bar; 36. Rotating rod; 37. Cushion side panel; 38. Tilt state; 39. Horizontal state. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] Example 1

[0034] Please refer to Figure 1 -11.

[0035] The present embodiment provides a comfortable large-space seat frame, which is composed of a base frame 1, a front-rear movable frame module 4, a height-adjustable seat cushion frame module 6, a backrest frame module 9 and a seat basin liftable module 17.

[0036] In the embodiments of the present invention, please refer to Figure 1 . The comfortable large-space seat frame includes a base frame 1 fixedly connected to the car body, and a forward-and-backward movable frame module 4 with a forward-and-backward movable motor 3 is connected to the base frame 1 through a movable component 2. The forward-and-backward movable motor 3 rotates the rotating rod 36 to finally move the entire forward-and-backward movable frame module 4 forward and backward. The movable component is equivalent to a seat slide rail and can move forward and backward. The entire comfortable large-space seat frame is fixed on the movable component. These belong to the prior art and will not be described in detail here. A height-adjustable seat cushion frame module 6 is connected to the front of the forward-and-back movable frame module 4 through a front swing arm 5, and a rear cross tube 8 is connected to the rear of the forward-and-back movable frame module 4 through a rear swing arm 7. The rear cross tube 8 is fixedly connected to a backrest frame module 9 and a height-adjustable seat cushion frame module 6.

[0037] In the embodiments of the present invention, please refer to Figure 2. The rear swing arm 7 is rotatably fixed on the front-rear movable frame module 4 through the first hinge point 10. Among them, there are two left and right rear swing arms 7, and the front-rear movable frame module 4 includes a left front-rear movable side panel assembly 24 and a right front-rear movable side panel assembly 25 symmetrically arranged on both sides, and the first hinge points 10 of the left and right rear swing arms 7 are rotatably connected to the left front-rear movable side panel assembly 24 and the right front-rear movable side panel assembly 25 respectively. The first hinge point 10 of the rear swing arm 7 serves as the rotation base point of the entire seat set. The positions of the backrest frame module 9 and the height-adjustable seat cushion frame module 6 are relatively fixed, and they flip as a whole.

[0038] In the embodiments of the present invention, please refer to Figure 4 The height-adjustable seat frame module 6 is fixed with a high-adjustable motor assembly 11, which has the function of: under the push of the high-adjustable motor assembly 11, the rear swing arm 7 rotates around the first hinge point 10, and the backrest frame module 9 and the height-adjustable seat frame module 6 are flipped as a whole at a certain angle.

[0039] In the embodiments of the present invention, please refer to Fig. 9 The high-adjustable motor assembly 11 is composed of a high-adjustable motor body 12, a high-adjustable screw 13 and a telescopic tube 14. The high-adjustable motor body 12 and the high-adjustable screw 13 are a component, which is a commercially available part and belongs to the prior art. It can convert the rotation of the motor into the rotation of the screw. Since the telescopic tube 14 has threads, when the motor rotates, the screw can move the telescopic tube 14 forward or backward, converting the rotational motion into linear motion.

[0040] In the embodiments of the present invention, please refer to Figure 4 The height-adjustable seat frame module 6 includes a horizontal square tube 15, the height-adjustable motor body 12 is fixedly mounted on the horizontal square tube 15, one end of the height-adjustable screw 13 is connected to the height-adjustable motor body 12, and the other end of the height-adjustable screw 13 is rotatably connected to the second hinge point 16 of the rear swing arm 7. For this structure, please refer to Figure 7 When the motor is working, the telescopic tube 14 is pushed forward, so that the height-adjustable seat cushion frame module 6 and the backrest module are turned over around the first hinge point 10 as a whole.

[0041] In the embodiments of the present invention, please refer to Figure 1 The height-adjustable cushion frame module 6 is provided with a seat basin liftable module 17. The seat basin liftable module 17 can be raised or lowered to meet the sitting comfort of users of different heights and enhance the experience.

[0042] In the embodiments of the present invention, please refer to Figure 5 and Figure 8The seat basin liftable module 17 includes a seat basin body 18, and the seat basin liftable module 17 includes a lift motor 19 fixed on the horizontal square tube 15, and a lift screw 20 is arranged on the lift motor 19, and a lift swing arm 21 is rotatably fixed to the other end of the lift screw 20, and the lift swing arm 21 is fixedly connected to a lift cross bar 35, and the two ends of the lift cross bar 35 extend into lift cavities 22 arranged at the two ends of the seat basin body 18, respectively, and the two ends of the seat basin body 18 are provided with a third hinge point 23 rotatably fixed to the height-adjustable seat cushion frame module 6. When working, refer to Figure 8 The lifting motor 19 rotates, driving the lifting screw 20 to move, and the lifting screw 20 pushes the lifting swing arm 21 to flip, thereby driving the lifting cross bar 35 to push the lifting cavity 22. Since the lifting cavity 22 and the bidet body 18 are designed as one body, when the lifting motor 19 rotates, the bidet body 18 can be rotated around the third hinge point 23 at a certain angle, so that the bidet lifting module 17 can be lifted or lowered to meet the needs of users of different heights.

[0043] In the embodiments of the present invention, please refer to Fig.10 . The first hinge point 10 is arranged at the middle position of the rear swing arm 7, the second hinge point 16 is arranged at one end of the rear swing arm 7, and a semicircular notch 26 is arranged at the other end of the rear swing arm 7. The first hinge point 10 is arranged at the middle position of the rear swing arm 7, and is rotatably connected to the left front and rear movable side panel assembly 24 and the right front and rear movable side panel assembly 25 (the left and right rear swing arms 7). The first hinge point 10 serves as a rotation base point, the second hinge point 16 is connected to the telescopic tube 14, and the semicircular notch 26 is connected to the backrest frame module 9, etc., and the three form a lever structure.

[0044] In the embodiments of the present invention, please refer to Fig.10 The backrest frame module 9 includes a backrest motor 27 as a power source, the backrest motor 27 is connected to a recliner synchronization rod 28, and electric recliners 29 are arranged at both ends of the recliner synchronization rod 28. When the backrest motor 27 is working, it can rotate and synchronously drive the recliner synchronization rod 28 to rotate. The recliner synchronization rod 28 is meshingly connected with the electric recliner 29, and synchronously drives the electric recliner 29 to rotate.

[0045] As an improvement of the present invention, one end of the electric recliner 29 is fixedly connected to the backrest lower plate assembly 30, and the other end of the electric recliner 29 is fixedly connected to the backrest upper plate assembly 31, and the backrest lower plate assembly 30 is fixedly connected to the front-rear movable skeleton module 4. By rotating the electric recliner 29, the backrest upper plate assembly 31 can be rotated around the axis of the electric recliner 29, wherein the backrest lower plate assembly 30 is fixedly connected to the front-rear movable skeleton module 4 and will not rotate. The backrest motor 27 and the electric recliner 29 are prior art and will not be described in detail.

[0046] In the embodiments of the present invention, please refer to Fig.10 The body of the rear swing arm 7 is provided with a concave curved surface 32 to increase the strength of the rear swing arm 7. Fig.11 A concave curved surface 32 is provided on the body of the front swing arm 5 to increase the strength of the front swing arm 5 .

[0047] In the embodiments of the present invention, please refer to Figure 2 and Fig.11 An upper hinge hole 33 is provided at one end of the front swing arm 5, and a lower hinge hole 34 is provided at the other end of the front swing arm 5. The lower hinge hole 34 is rotatably connected to the left front-to-back movable side panel assembly 24 and the right front-to-back movable side panel assembly 25. The upper hinge hole 33 is rotatably fixedly connected to the seat cushion side panel 37 of the height-adjustable seat cushion frame module 6, and the lower hinge hole 34 is rotatably fixedly connected to the left front-to-back movable side panel assembly 24 of the front-to-back movable frame module 4.

[0048] In the embodiments of the present invention, please refer to Figure 4 The height-adjustable cushion frame module 6 is provided with a left-right symmetrical cushion side panel 37, and the third hinge point 23 of the seat basin body 18 is hinged on the seat cushion side panel 37. The seat basin body 18 can rotate around the third hinge point 23, so that the seat basin can be lifted, so that the user's thigh can be lifted, and the comfort experience of the car seat for users of different heights can be met.

[0049] Furthermore, the front and rear moving motor 3 and the backrest motor 27 can be replaced by a manual crank. The purpose of selecting this design is to replace the electric motor with the manual motor to reduce the production cost.

[0050] The present embodiment provides a comfortable large-space seat frame, which are connected as follows: the front and rear movable frame module 4, the front swing arm 5, the rear swing arm 7 and the height-adjustable seat cushion frame module 6 together form a planar connecting rod mechanism, and the backrest lower plate assembly 30 of the backrest frame module 9 is fixedly connected to the height-adjustable seat cushion frame module 6 as a relative whole, wherein the backrest upper plate assembly 31 in the backrest frame module 9 can be flipped around the electric angle adjuster 29.

[0051] The comfortable large-space seat frame provided in this embodiment is used normally. When the backrest frame module 9 is flipped to the limit, that is, when it touches the height-adjustable cushion frame module 6, the backrest is still in a tilted state 38. Under the push of the high-adjustable motor assembly 11, the rear swing arm 7 rotates around the first hinge point 10, and the backrest frame module 9 and the height-adjustable cushion frame module 6 are flipped as a whole until the back of the backrest frame module 9 is in a horizontal state 39. In addition, the seat pan liftable module 17 set on the height-adjustable cushion frame module 6 can rotate around the third hinge point 23, and the user can adjust it to meet his favorite sitting posture.

[0052] The beneficial effects of the present invention are as follows: this new type of seat frame structure can be used to place water cups, drinks, etc. after being folded, and the liquid in the water cups or drinks will not spill due to tilting. At the same time, the use space of the car is increased, and the application functions of the car are broadened. Moreover, the seat basin lifting module 17 can meet the different sitting postures of users and enhance the user's comfort experience.

[0053] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comfortable large-space seat frame, comprising a base frame (1) fixedly connected to a vehicle body, a forward-and-backward movable frame module (4) with a forward-and-backward movable motor (3) connected to the base frame (1) via a movable component (2), wherein: A height-adjustable seat frame module (6) is connected to the front of the front-rear movable frame module (4) via a front swing arm (5), and a rear transverse tube (8) is connected to the rear of the front-rear movable frame module (4) via a rear swing arm (7). The rear transverse tube (8) is fixedly connected to a backrest frame module (9) and the height-adjustable seat frame module (6); the rear swing arm (7) is rotatably fixed to the front-rear movable frame module (4) via a first hinge point (10), and a high-adjustable motor assembly (11) is fixed to the height-adjustable seat frame module (6). The high-adjustable motor assembly (11) is composed of a high-adjustable motor body (12), a high-adjustable screw rod (13) and a telescopic tube (14). The height-adjustable seat frame module (6) includes a transverse square tube (15), and the high-adjustable motor body (12) is fixedly mounted on the transverse square tube (15). One end of the high-adjustable screw rod (13) is connected to the high-adjustable motor body (12). ), the other end of the height-adjustable screw rod (13) is rotatably connected to the second hinge point (16) of the rear swing arm (7); the height-adjustable seat cushion frame module (6) is provided with a seat basin liftable module (17), the seat basin liftable module (17) includes a seat basin body (18), the seat basin liftable module (17) includes a lift motor (19) fixed on the horizontal square tube (15), and a lift motor (19) is provided on the lift motor (19). A lifting screw rod (20), the other end of which is rotatably fixed with a lifting swing arm (21), the lifting swing arm (21) being fixedly connected to a lifting cross bar (35), the two ends of the lifting cross bar (35) respectively extending into a lifting cavity (22) arranged at the two ends of the seat basin body (18), and the two ends of the seat basin body (18) are provided with a third hinge point (23) rotatably fixed to the height-adjustable seat cushion frame module (6).

2. The comfortable large-space seat frame according to claim 1 is characterized in that: The front-rear movable skeleton module (4) comprises a left front-rear movable side panel assembly (24) and a right front-rear movable side panel assembly (25) symmetrically arranged on both sides, and the first hinge point (10) of the rear swing arm (7) is rotatably connected to the left front-rear movable side panel assembly (24) and the right front-rear movable side panel assembly (25).

3. The comfortable large-space seat frame according to claim 1 is characterized in that: The first hinge point (10) is arranged at the middle position of the rear swing arm (7), the second hinge point (16) is arranged at one end of the rear swing arm (7), and the other end of the rear swing arm (7) is provided with a semicircular notch (26).

4. The comfortable large-space seat frame according to claim 1 is characterized in that: The backrest frame module (9) comprises a backrest motor (27) as a power source, the backrest motor (27) is connected to a recliner synchronization rod (28), and electric recliners (29) are arranged at both ends of the recliner synchronization rod (28).

5. The comfortable large-space seat frame according to claim 4 is characterized in that: One end of the electric angle adjuster (29) is fixedly connected to the backrest lower plate assembly (30), and the other end of the electric angle adjuster (29) is fixedly connected to the backrest upper plate assembly (31). The backrest lower plate assembly (30) is fixedly connected to the front-rear movable skeleton module (4).

6. The comfortable large-space seat frame according to claim 1 is characterized in that: A concave curved surface (32) is provided on the body of the rear swing arm (7).

7. The comfortable large-space seat frame according to claim 1 is characterized in that: An upper hinge hole (33) is provided at one end of the front swing arm (5), and a lower hinge hole (34) is provided at the other end of the front swing arm (5). The lower hinge hole (34) is rotatably connected to the left front-to-back movable side plate assembly (24) and the right front-to-back movable side plate assembly (25).

8. The comfortable large-space seat frame according to claim 1 is characterized in that: The height-adjustable seat cushion frame module (6) is provided with left-right symmetrical seat cushion side panels, and the third hinge point (23) of the seat basin body (18) is hinged to the seat cushion side panels.

9. The comfortable large-space seat frame according to any one of claims 1 to 8, characterized in that: The forward and backward moving motor (3) is replaced by a manual crank.

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