A compact multi-directional adjustable zero-gravity seat frame

Abstract

The present invention discloses a compact multi-directionally adjustable zero-gravity seat frame, comprising a base, a seat frame is arranged above the base, the rear of the seat frame is connected to a backrest frame through an angle adjuster, a seat frame adjustment link is arranged between the front and rear of the seat frame and the base respectively, the seat frame adjustment link rotates in a vertical plane, each seat frame adjustment link is hinged to the base through a hinge shaft, the seat frame adjustment link located at the rear of the seat frame is hinged to the seat frame, the seat frame adjustment link located at the front is connected to the seat frame through an inclination adjustment link, the seat frame adjustment link located at the front and the rear are respectively connected to a rotation drive mechanism, the seat frame side plate of the seat frame on the same side and the backrest side plate of the backrest frame are both provided with a reinforcement structure, and the rear side of the backrest side plate on this side is provided with a guide constraint mechanism for guiding the sliding of the safety belt. The beneficial effects of the present invention are: the seat frame height adjustment and inclination adjustment can be realized, stable support is provided for the seat frame, and the safety of the safety belt system is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seat frame structures, and in particular relates to a compact multi-directional adjustable zero-gravity seat frame. Background Art

[0002] The functions of car seats are developing in an increasingly rich direction, so their structural design tends to be complex. In order to improve the riding comfort, multiple connections between the various parts of the seat frame are designed as adjustable connections to facilitate the adjustment of the seat posture, thereby providing sufficient and appropriate support for various parts of the body, reducing joint tension, and putting the body in a highly relaxed state. Based on this, the concept of the so-called "zero gravity" seat is proposed. Under the concept of "zero gravity", the seat has many adjustment modes and the adjustment range of each part is large. However, there is a contradictory relationship between adjustability and stability and safety. In addition, since the overall space in the car is limited, it is also a restrictive requirement to reasonably control the space occupied by the seat while meeting the adjustment requirements. In addition, "zero gravity" also brings some difficulties in the design of the seat's auxiliary structure. For example, due to the large adjustment range, the seat belt retractor of the "zero gravity" seat must be installed on the seat body, and cannot be installed on the body like a traditional seat. This poses a challenge to the strength of the seat frame, and on the other hand, it also poses a challenge to whether the guidance and sliding state of the seat belt meet the safety requirements. In such a complex situation, how to reasonably design the seat frame structure so that it can meet the needs of seat posture adjustment and the requirements of stability and safety is a comprehensive issue. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a compact multi-directional adjustable zero-gravity seat frame. The technical solution is as follows:

[0004] A compact multi-directionally adjustable zero-gravity chair frame comprises a base, a seat frame is arranged above the base, and a backrest frame is connected to the rear of the seat frame;

[0005] The seat frame includes two seat frame side panels arranged opposite to each other on the left and right sides, and the backrest frame includes two backrest side panels arranged opposite to each other on the left and right sides, the two backrest side panels are arranged vertically, and the two backrest side panels are respectively connected to the corresponding seat frame side panels through angle adjusters;

[0006] The key is that

[0007] A seat frame adjustment link is provided between the front and rear parts of the seat frame and the base, respectively. The seat frame adjustment link rotates in a vertical plane, and each seat frame adjustment link is hinged to the base via a hinge shaft.

[0008] The seat frame adjustment link located at the rear of the seat frame is hinged to the seat frame, and the seat frame adjustment link located at the front of the seat frame is connected to the seat frame via an inclination adjustment link;

[0009] The seat frame adjustment connecting rods located at the front and rear of the seat frame are respectively connected to a rotation driving mechanism;

[0010] A reinforcing side plate is arranged on the seat frame side plate on any side of the seat frame, a backrest side plate reinforcement is arranged on the backrest side plate on this side, and a guiding restraint mechanism for guiding the sliding of the seat belt is arranged on the rear side of the backrest side plate on this side.

[0011] As a preferred technical solution, the above-mentioned rotation drive mechanism includes an arc-shaped rack and a driving wheel assembly, and the driving wheel assembly includes a driving gear meshing with the arc-shaped rack;

[0012] The arc-shaped rack is fixedly connected to the base, the arc-shaped rack is located in a vertical plane, and the center line of the arc-shaped rack is colinear with the corresponding axis center line of the hinge shaft;

[0013] The driving wheel assembly is arranged on the seat frame adjusting connecting rod and rotates therewith.

[0014] As a preferred technical solution, a rack bracket is provided on the base, the rack bracket is plate-shaped, the rack bracket is vertically arranged, a tooth plate is fixedly attached to one side of the rack bracket, a fan-shaped annular hole is opened on the tooth plate, and the arc-shaped rack is arranged on any arc-shaped edge of the fan-shaped annular hole;

[0015] An arc-shaped hole is provided on the rack bracket facing the arc-shaped rack, and the center line of the arc-shaped hole is colinear with the axis center line of the hinge shaft;

[0016] The driving wheel assembly also includes a bracket group and a driving motor, and the bracket group is fixedly connected to the seat frame adjustment connecting rod;

[0017] The drive motor is fixedly mounted on the bracket group, and the output shaft of the drive motor is rotatably mounted on the bracket group, and the output shaft is inserted into the arc hole and the fan annular hole;

[0018] The output shaft is fixedly provided with the driving gear, and the driving gear is located in the fan annular hole.

[0019] As a preferred technical solution, the bracket group includes a driving wheel bracket and a motor bracket, both of which are formed by plate sheet metal processing and fixedly connected to the corresponding seat frame adjustment connecting rod, both of which are located in the vertical plane and are separated on both sides of the tooth plate and rack bracket;

[0020] The two ends of the output shaft are rotatably mounted on the driving wheel bracket and the motor bracket respectively;

[0021] The driving wheel bracket and the motor bracket are both in the shape of long strips, the motor bracket and the seat frame adjustment connecting rod are formed by processing from the same sheet metal, and the driving motor is installed on the motor bracket;

[0022] One end of the driving wheel bracket is connected to the motor bracket through a connecting rod, and the output shaft is passed through the other end.

[0023] As a preferred technical solution, a seat frame front cross bar is connected between the front ends of the two seat frame side plates, and a seat frame rear cross bar is connected between the rear ends, and both ends of the seat frame rear cross bar are rotatably inserted into the corresponding seat frame side plates;

[0024] The two ends of the seat frame rear cross bar are respectively connected to the base with a seat frame adjustment link, and the two seat frame adjustment links are arranged opposite to each other on the left and right. The upper ends of the two seat frame adjustment links are welded to the seat frame rear cross bar, and any one of the seat frame adjustment links is connected to the rotation drive mechanism;

[0025] A seat frame adjustment link and an inclination adjustment link are respectively connected to the base at the front ends of the two seat frame side panels, the two seat frame adjustment links are arranged opposite to each other on the left and right, and the two inclination adjustment links are also arranged opposite to each other on the left and right, and a synchronization rod is connected between the two seat frame adjustment links, and any one of the seat frame adjustment links is connected to the rotation drive mechanism.

[0026] As a preferred technical solution, the synchronization rod is a hollow rod, and the two ends of the synchronization rod are respectively provided with hinged reinforcement members, the hinged reinforcement members are tubular, and the hinged reinforcement members include an insertion section and a shear section coaxially connected, the insertion section is inserted in the synchronization rod, the outer wall of the shear section is fixedly connected to the seat frame adjustment link, and an annular flange protruding outward is provided between the insertion section and the shear section, and the annular flange separates the synchronization rod and the seat frame adjustment link;

[0027] An articulation bolt is inserted into the articulation reinforcement, a screw rod of the articulation bolt is inserted into the articulation reinforcement and matched with the thread thereof, and the inclination adjustment connecting rod is rotatably sleeved on the articulation bolt.

[0028] As a preferred technical solution, the above-mentioned hinge bolt comprises a screw head, a polished rod section and a screw rod section connected in sequence, the screw rod section is inserted into the hinge reinforcement and extends into the synchronization rod, and the outer sleeve of the polished rod section is provided with the inclination adjustment connecting rod;

[0029] The outer diameter of the polished rod segment is greater than the outer diameter of the screw segment, and a step surface is formed at the connection between the two, and the step surface abuts against the end surface of the shear-resistant segment;

[0030] The outer diameter of the polished rod section is smaller than the outer diameter of the anti-shear section, so that the inclination adjustment connecting rod is limited between the end surface of the anti-shear section and the screw head.

[0031] As a preferred technical solution, the above-mentioned guide restraint mechanism has a sliding cavity for the seat belt to slide, the sliding cavity is a continuous cavity or at least two separated cavities located on the same curve, the sliding cavity defines a seat belt sliding path for the seat belt to slide, and an elastic disturbance member is arranged on the seat belt sliding path;

[0032] A support frame for reversing the seat belt is provided at the upper end of the backrest side plate where the guide restraint mechanism is located, and the support frame includes a support body, and a reversing slot is fixedly provided on the upper part of the support body, and the reversing slot is arranged along the front-to-back direction, and the rear end of the reversing slot corresponds to the sliding path of the seat belt;

[0033] A positioning connection portion is fixedly arranged below the bracket body. The bracket body is a box-shaped structure surrounded by plates and having an internal cavity, so as to allow the bracket body to collapse downward when the load loaded on the reversing slot exceeds its compressive strength.

[0034] As a preferred technical solution, the guide restraint mechanism comprises a guide bar arranged at the rear side of the backrest frame, one side of the guide bar faces the backrest frame, and a limit plate is arranged on the other side of the guide bar, and a flat cavity is formed between the limit plate and the guide bar, and the cavity forms the sliding cavity;

[0035] The local segments of the guide strip are deformed alternately on both sides thereof to form a corrugated plate, the corrugated plate forms the elastic disturbance member, and the lines on the corrugated plate are perpendicular to the extension direction of the sliding path of the safety belt;

[0036] The guide strip has at least one bent portion.

[0037] As a preferred technical solution, an upper backrest cross tube is connected between the upper ends of the two backrest side panels, and a lower backrest cross plate is connected between the lower ends;

[0038] The backrest side panel comprises a side panel sheet metal, the side panel sheet metal comprises a backrest side panel body extending vertically, the two side surfaces of the backrest side panel body respectively face the left and right sides of the seat, the front edge of the backrest side panel body is connected to the side panel front flange, the rear edge of the backrest side panel body is connected to the side panel rear flange, the side panel rear flange and the side panel front flange are located on the inner side of the backrest side panel body;

[0039] The two ends of the upper horizontal tube of the backrest extend downward to form side tubes respectively, and the side tubes are close to the front side of the rear flange of the corresponding side plate and the inner side of the backrest side plate body and connected thereto;

[0040] The backrest side plate reinforcement comprises a first reinforcement sheet metal and a second reinforcement sheet metal;

[0041] The side tube where the guide and restraint mechanism is located extends along the rear flange of the side plate to its lower end, and the first reinforcing sheet metal is connected between the side tube and the front flange of the side plate, and the three form a hollow box-shaped structure;

[0042] The second reinforcing sheet metal is arranged on the outer side of the backrest side panel body, the second reinforcing sheet metal is close to the outer side surface of the backrest side panel body and the rear side surface of the rear flange of the side panel, and the second reinforcing sheet metal is welded to the backrest side panel body.

[0043] As a preferred technical solution, the seat frame side plate comprises a seat frame side plate body, the edge of the seat frame side plate body is connected with a seat frame side plate flange facing outward, the reinforcing side plate is located on the outer side of the corresponding seat frame side plate, the reinforcing side plate is parallel to and directly faces the seat frame side plate body, the edge of the reinforcing side plate is connected with a reinforcing side plate flange facing the seat frame side plate, the reinforcing side plate flange overlaps with the corresponding portion of the seat frame side plate flange and is welded and connected;

[0044] An ISOFIX bracket is installed at the rear of the two seat frame side panels, and the ISOFIX bracket includes a long steel wire rack, and a mounting bracket is fixedly provided at both ends of the steel wire rack, and the two mounting brackets correspond to the two seat frame side panels one by one and are fixedly connected;

[0045] Two ISOFIX interfaces are arranged on the steel wire rack at intervals, and the ISOFIX interface is formed by bending a section of steel wire in the same plane, and the two ends of the steel wire are bent vertically to the same side of the middle section to form the ISOFIX interface, and the two ends of the steel wire are fixed on the steel wire rack, and the two ends of the steel wire extend forward and upward from between the seat frame and the backrest frame along a direction perpendicular to the length of the steel wire rack, so that the middle section of the steel wire is located above the seat frame.

[0046] Compared with the prior art, the present invention has the following beneficial effects: the adjustment structure formed by multiple connecting rods and a rotating drive mechanism can realize seat frame height adjustment and inclination adjustment and provide stable support for the seat frame; the reinforced design on one side of the seat frame meets the load-bearing requirements of the seat belt, and a guide constraint mechanism is arranged on the back side of the seat back to help stabilize the sliding path of the seat belt and ensure the safety of the seat belt system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0048] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0049] Figure 3 A schematic diagram of the seat frame and its connection structure with the base from a first perspective;

[0050] Figure 4 for Figure 3 Enlarged view of part a in the middle;

[0051] Figure 5 It is a schematic diagram of the exploded structure of the rotation drive mechanism located at the front of the seat frame, the seat frame adjustment connecting rod and the inclination adjustment connecting rod;

[0052] Figure 6 for Figure 5 A structural diagram from another perspective;

[0053] Figure 7 It is a schematic diagram of the exploded structure of the tooth plate and the rack bracket;

[0054] Figure 8 is a schematic diagram of the seat frame and its connection structure with the base from a second perspective, in which the front portion of the seat frame is in a raised state;

[0055] Fig. 9 is a schematic diagram of the seat frame and its connection structure with the base from a third viewing angle;

[0056] Fig.10 The fourth perspective diagram of the seat frame and its connection structure with the base, in which the connection between the synchronization rod and the seat frame adjustment link and the tilt adjustment link is partially cut away;

[0057] Fig.11 for Fig.10 Enlarged view of part b in the middle;

[0058] Fig.12 A schematic diagram of the seat frame adjusting connecting rod falling on the limit support platform;

[0059] Fig.13 This is a schematic diagram of the ISOFIX bracket installed on the seat frame from the first viewing angle;

[0060] Fig.14 This is a schematic diagram of the ISOFIX bracket installed on the seat frame from the second viewing angle;

[0061] Fig.15 A structural diagram of the first perspective of the guiding constraint mechanism;

[0062] Fig.16 for Fig.15 Schematic diagram of the second perspective;

[0063] Fig.17 for Fig.15 Schematic diagram of the third perspective;

[0064] Fig.18 is a structural schematic diagram of the support frame;

[0065] Fig.19 It is a structural schematic diagram of the support frame being installed on the seat back frame;

[0066] Fig. 20 for Fig.19 Schematic diagram from another perspective;

[0067] Fig.21 A schematic structural diagram of a backrest side panel with a side panel reinforcement from a first perspective;

[0068] Fig. 22 for Fig.21 Schematic diagram of the structure from the second perspective. DETAILED DESCRIPTION

[0069] The present invention will be further described below in conjunction with the embodiments and drawings. For ease of description, the directions of "up", "down", "left", "right", "front" and "rear" are directions corresponding to when the seat is installed in a car.

[0070] like Figure 1 and 2As shown, a compact multi-directionally adjustable zero-gravity chair frame includes a base 501, a seat frame 200 is arranged above the base 501, and a backrest frame 100 is connected to the rear of the seat frame 200. The seat frame 200 includes two seat frame side panels 210 arranged opposite to each other on the left and right, a seat frame front cross bar 230 is connected between the front ends of the two seat frame side panels 210, and a seat frame rear cross bar 220 is connected between the rear ends of the two seat frame side panels 210. The backrest frame 100 includes two backrest side panels arranged opposite to each other on the left and right, the two backrest side panels are arranged vertically, an upper backrest cross tube 110 is connected between the upper ends of the two backrest side panels, and a lower backrest cross plate is connected between the lower ends of the two backrest side panels, and the two backrest side panels are respectively connected to the corresponding seat frame side panels 210 through a recliner. The front and rear of the seat frame 200 are provided with seat frame adjustment links 580 respectively between the seat frame 200 and the base 501. The seat frame adjustment links 580 rotate in a vertical plane, and each seat frame adjustment link 580 is hinged to the base 501 through a hinge shaft 502. The lower end of the seat frame adjustment link 580 at the rear of the seat frame 200 is hinged to the base 501, and the upper end is hinged to the rear of the seat frame 200; the seat frame adjustment link 580 at the front of the seat frame 200 is connected to the seat frame 200 through an inclination adjustment link 590. The seat frame adjustment links 580 at the front and rear of the seat frame 200 are respectively connected to a rotation drive mechanism 500, which is self-locking when not working to maintain the position of the corresponding seat frame adjustment link 580 relative to the base 501. Only one rotation drive mechanism 500 works at a time, and the other rotation drive mechanisms 500 are kept in a locked state, so that two adjustment modes of seat frame height adjustment and seat frame inclination adjustment can be achieved.

[0071] like Figure 3 and 13 As shown in Figures 14 to 14, a reinforcing side panel 211 is provided on the seat frame side panel 210 on any side of the seat frame 200, a backrest side panel reinforcement is provided on the backrest side panel on this side, a guide constraint mechanism 170 for guiding the sliding of the seat belt is provided on the rear side of the backrest side panel on this side, and a support frame 160 for the reversal of the seat belt is provided on the upper end of the backrest side panel. Since the seat belt retractor is installed below the seat frame or behind the backrest, it needs to extend along the backrest and escape the backrest, so the guide constraint mechanism 170 and the support frame 160 are designed. At the same time, a seat belt hanging point needs to be installed on the seat frame side panel 210 on the same side as the guide constraint mechanism 170, so the backrest side panel and the seat frame side panel 210 on this side are both reinforced to meet the requirements of bearing the tension or pressure of the seat belt.

[0072] like Figure 3 and 8As shown in Figures 1 to 10, the two ends of the seat frame rear cross bar 220 are respectively rotatably inserted into the corresponding seat frame side plates 210. In order to improve the stability of the seat frame 200, the two ends of the seat frame rear cross bar 220 are respectively connected to the base 501 with a seat frame adjustment link 580, and the two seat frame adjustment links 580 connected to the seat frame rear cross bar 220 are arranged opposite to each other on the left and right, and the upper ends of the two seat frame adjustment links 580 are both welded to the seat frame rear cross bar 220, and any one of the seat frame adjustment links 580 is connected to the rotation drive mechanism 500.

[0073] A seat frame adjustment link 580 and an angle adjustment link 590 are connected between the front ends of the two seat frame side plates 210 and the base 501. The two seat frame adjustment links 580 are arranged opposite to each other, and the two angle adjustment links 590 are also arranged opposite to each other. A synchronization rod 503 is connected between the two seat frame adjustment links 580 located on the left and right sides of the seat frame 200. Fig. 9 and 12 As shown, any one of the seat frame adjustment links 580 is connected to the rotation drive mechanism 500, and a limit support platform 501a is provided below the middle of the seat frame adjustment link 580 on the other side, and the limit support platform 501a is fixedly provided on the base 501. The limit support platform 501a limits the lowest position of the seat frame adjustment link 580 moving downward.

[0074] The seat frame as a whole is supported by all the seat frame adjustment links 580 and the tilt adjustment links 590, and the angle of the seat frame adjustment links 580 relative to the base 501 is also maintained by the rotation drive mechanism 500, that is, the load applied to the seat frame 200 is mainly borne by the two rotation drive mechanisms 500. Therefore, the rotation drive mechanism 500 located at the front of the seat frame 200 is close to the seat frame side plate 210 on one side, and the rotation drive mechanism 500 located at the rear of the seat frame 200 is close to the seat frame side plate 210 on the other side, so that the load on the seat frame 200 is evenly distributed to both sides thereof as much as possible when only two rotation drive mechanisms 500 are used, thereby improving the stability of the seat frame 200.

[0075] Since the seat frame 200 is in a low position in most cases, a limit support platform 501a is provided below the seat frame adjustment link 580. Fig.12 When the seat frame adjusting link 580 falls onto the limiting support platform 501a, the load on the seat can be transferred to the base 501, thereby reducing the load of the rotation drive mechanism 500 and helping to keep the seat frame 200 stable.

[0076] like Fig.10 and 11The synchronization rod 503 is a hollow rod. To improve the connection strength and enhance the shear resistance, a hinged reinforcement 504 and a hinge bolt 505 are respectively provided at both ends of the synchronization rod 503. The hinged reinforcement 504 is tubular, one end of which is inserted into the synchronization rod 503, and the other end of which extends out of the synchronization rod 503. The outer wall of the extended end of the hinged reinforcement 504 is fixedly connected to the seat frame adjustment link 580. The hinged reinforcement 504 is provided with a hinge bolt 505, the screw of which is provided in the hinged reinforcement 504 and threadedly matched with the hinged reinforcement 504, and the inclination adjustment link 590 is rotatably sleeved on the hinge bolt 505.

[0077] Take the connection structure between any end of the synchronization rod 503 and the seat frame adjustment link 580 and the inclination adjustment link 590 located at the end as an example:

[0078] Specifically, Fig.11 The hinge reinforcement 504 includes an insertion section and a shear section which are coaxially connected. The insertion section is inserted into the synchronization rod 503, and the seat frame adjustment link 580 is disposed on the outer sleeve of the shear section. An annular flange protruding outward is disposed between the insertion section and the shear section, and the annular flange separates the synchronization rod 503 and the seat frame adjustment link 580.

[0079] The hinge bolt 505 includes a screw head, a polished rod section and a screw rod section connected in sequence, the screw rod section is inserted into the hinge reinforcement 504, and the free end of the screw rod section extends into the synchronization rod 503 to enhance the strength of the hinge reinforcement 504. The polished rod section is provided with the inclination adjustment connecting rod 590.

[0080] The outer diameter of the polished rod section is larger than the outer diameter of the screw section, and a step surface is formed at the connection between the two, and the step surface abuts against the end surface of the anti-shear section to keep the positions of the hinge bolt 505 and the hinge reinforcement 504 relatively stable. The outer diameter of the polished rod section is smaller than the outer diameter of the anti-shear section, so that the inclination adjustment link 590 is limited between the end surface of the anti-shear section and the screw head.

[0081] In order to reduce the rotational resistance and friction noise at the same time, a resistance reducing washer 506 is provided on the outer sleeve of the polished rod section. The resistance reducing washer 506 includes a tubular washer body, which is sleeved on the polished rod section. The washer body is sleeved with the inclination adjustment link 590. The two edges of the washer body extend radially outward to form two annular flanges. The two annular flanges are respectively abutted against the two side surfaces of the inclination adjustment link 590, thereby separating the inclination adjustment link 590 from the end face and screw head of the shear resistance section.

[0082] In general, the two seat frame adjusting links 580 located at both ends of the synchronization rod 503 are welded to the corresponding hinge reinforcement 504, and the two seat frame adjusting links 580 are arranged opposite to each other to ensure synchronous rotation.

[0083] like Figures 4 to 7 As shown, the rotation drive mechanism 500 includes an arc-shaped rack 511 and a driving wheel assembly, and the driving wheel assembly includes a driving gear 530 meshing with the arc-shaped rack 511. The arc-shaped rack 511 is fixedly connected to the base 501, and the arc-shaped rack 511 is located in a vertical plane. The center line of the arc-shaped rack 511 is colinear with the axis center line of the corresponding hinge shaft 502. The driving wheel assembly is arranged on the seat frame adjustment link 580 and moves synchronously with it. When the driving gear 530 rotates, the driving wheel assembly moves along the arc-shaped rack 511 to push the seat frame adjustment link 580 to rotate around the corresponding hinge shaft 502 in the vertical plane.

[0084] like Figures 5 to 7 As shown, a rack bracket 520 is provided on the base 501. The rack bracket 520 is plate-shaped and vertically arranged. A tooth plate 510 is fixedly attached to one side of the rack bracket 520. A fan-shaped annular hole 512 is provided on the tooth plate 510. The arc-shaped rack 511 is provided on any arc-shaped edge of the fan-shaped annular hole 512. The arc-shaped rack 511 can also be directly processed and formed on the tooth plate 510. An arc-shaped hole 522 is provided on the rack bracket 520 directly facing the arc-shaped rack 511. The center line of the arc-shaped hole 522 is colinear with the axis center line of the hinge shaft 502.

[0085] Taking the rotation drive mechanism 500 disposed at the front of the seat frame 200 as an example: the driving wheel assembly includes a bracket group and a driving motor 560, and the bracket group is fixedly connected to the seat frame adjustment connecting rod 580. The driving motor 560 is fixedly mounted on the bracket group, and the output shaft 570 of the driving motor 560 is rotatably mounted on the bracket group, and the output shaft 570 is inserted into the arc hole 522 and the fan annular hole 512. The driving gear 530 is fixedly arranged on the output shaft 570, and the driving gear 530 is located in the fan annular hole 512.

[0086] like Figure 6 and 7 As shown, the bracket group includes a driving wheel bracket 550 and a motor bracket 540, which are respectively formed by plate sheet metal processing and fixedly connected to the corresponding seat frame adjustment link 580, and both are located in the vertical plane and are separated on both sides of the tooth plate 510 and the rack bracket 520. The two ends of the output shaft 570 are rotatably mounted on the driving wheel bracket 550 and the motor bracket 540 respectively.

[0087] Specifically, the driving wheel bracket 550 and the motor bracket 540 are both in the shape of long strips, and both are welded and connected to the synchronization rod 503, so as to form a whole. The motor bracket 540 and the seat frame adjustment connecting rod 580 are formed by sheet metal processing of the same plate, and the driving motor 560 is installed on the motor bracket 540. One end of the driving wheel bracket 550 is welded to the synchronization rod 503, and the output shaft 570 is penetrated at the other end. This structure is simple and can keep the output shaft 570 stable.

[0088] The motor bracket 540 includes a motor bracket plate, the middle portion of which is offset toward a side away from the tooth plate 510 , thereby increasing the distance between the portion of the motor bracket plate facing the tooth plate 510 and the rack bracket 520 to form a separation area for accommodating the tooth plate 510 .

[0089] like Figure 7 As shown, a part of the rack support 520 is offset to a side away from the tooth plate 510, thereby forming an arc groove 521 with an opening toward the tooth plate 510, the arc groove 521 extends in a direction parallel to the direction of the arc rack 511, the width of the arc groove 521 is not less than the diameter of the tooth top circle of the driving gear 530, the bottom of the arc groove 521 is close to the corresponding end face of the driving gear 530, the bottom of the arc groove 521 is penetrated by the arc hole 522, and the width of the arc hole 522 is less than the diameter of the tooth top circle of the driving gear 530. The arc hole 522 guides and constrains the movement of the output shaft 570, and the arc groove 521 axially limits the driving gear 530, thereby improving the stability of the driving wheel assembly moving along the arc rack 511.

[0090] The structure of the rotating drive mechanism 500 arranged at the rear of the seat frame 200 is consistent with that of the rotating drive mechanism 500 arranged at the front of the seat frame 200, except that the installation structure is different: the driving wheel bracket 550 and the motor bracket 540 of the rotating drive mechanism 500 at the rear of the seat frame 200 are both welded to the rear cross bar 220 of the seat frame.

[0091] The rotating drive mechanism 500 disposed at the rear of the seat frame 200 is used for adjusting the height of the seat frame 200, and the rotating drive mechanism 500 disposed at the front of the seat frame 200 is used for adjusting the inclination of the seat frame 200. By controlling one of them not to work and the other to work, the corresponding mode of adjustment can be achieved.

[0092] Since the arc-shaped rack of the rotary drive mechanism 500 remains stationary, while the drive assembly moves with the movement of the drive gear 530, and since the drive assembly moves within the length range of the arc-shaped rack 511, compared with the adjustment structure in the prior art in which the drive assembly is stationary and the rack moves, when achieving the same stroke of seat frame height or inclination adjustment, the space required by the seat frame adjustment assembly of the present invention is reduced, and the seat structure is more compact. Due to the compact structure, the two rotary drive mechanisms 500 are both arranged below the inner hole of the seat frame 200. Under the same seat frame 200 adjustment stroke, the space occupied by the seat frame of the present application is reduced, especially when the seat frame 200 is adjusted to the highest position, the height of the seat frame 200 from the vehicle floor is lower than the position of the seat frame 200 in the prior art.

[0093] like Fig.13 and 14 As shown, an ISOFIX bracket 300 is installed at the rear of the two seat frame side panels 210. The ISOFIX bracket 300 includes a long steel wire frame 310. A mounting bracket 320 is fixedly arranged at each end of the steel wire frame 310. The two mounting brackets 320 correspond to and are fixedly connected to the two seat frame side panels 210. Two ISOFIX interfaces 330 are arranged at intervals on the steel wire frame 310. The ISOFIX interface 330 is formed by bending a section of steel wire in the same plane. The two ends of the steel wire are bent vertically to the same side of the middle section to form the ISOFIX interface 330. The two ends of the steel wire are fixed on the steel wire frame 310. The two ends of the steel wire extend forward and upward from between the seat frame 200 and the backrest frame 100 along a direction perpendicular to the length of the steel wire frame 310, so that the middle section of the steel wire is located above the seat frame 200.

[0094] In this embodiment, the mounting frame 320 is in the shape of a strip plate, and the shape of the mounting frame 320 is adapted to the shape of the seat frame side plate flange at the rear edge of the seat frame side plate 210 and is arranged along the direction thereof, and one side of the mounting frame 320 is in contact with the corresponding side plate flange. A pre-positioning connection portion is arranged at one end of the mounting frame 320, and a fastening connection portion is arranged at the other end of the mounting frame 320, and both the pre-positioning connection portion and the fastening connection portion are connected to the corresponding side plate flange.

[0095] In this embodiment, since the portion of the seat frame side plate 210 that matches the mounting frame 320 is in the shape of a curved surface, the mounting frame 320 is a strip-shaped arc-shaped plate, and the longer side of the arc-shaped plate is an arc-shaped side. The concave surface of the mounting frame 320 is against the corresponding flange of the seat frame side plate. The pre-positioning connection portion is a plug-in block 321, which is connected to a short side of the mounting frame 320. The protruding end of the plug-in block 321 protrudes toward the concave side of the mounting frame 320 and bends toward the middle thereof. The plug-in block 321 is inserted into the flange of the seat frame side plate. The fastening connection portion is a fastening screw hole 322 provided on the mounting frame 320. The local plate body of the mounting frame 320 where the fastening screw hole 322 is located protrudes toward its convex side to form a screw hole reinforcement protrusion. A fastening bolt is inserted into the fastening screw hole 322, and the fastening bolt connects the mounting frame 320 to the flange of the seat frame side plate.

[0096] like Fig.13 A retaining bracket 340 is connected between the two ends of the steel wire, and the retaining bracket 340 includes a rigid plate on the same side of the bent steel wire, and the other side of the steel wire is against the steel wire frame 310. The rigid plate is bent and wrapped around the steel wire corresponding to the two ends of the steel wire and is welded to it.

[0097] The steel wire rack 310 is a U-shaped tube with a groove-shaped cross section. The steel wire rack 310 and the mounting frame 320 are formed from a plate through sheet metal processing to reduce the production steps. The steel wire rack 310 is processed into a U-shaped tube to improve strength and rigidity. The steel wire is installed on the outer side of the groove wall on either side of the U-shaped tube. Both ends of the steel wire extend perpendicularly to the groove wall of the U-shaped tube and are passed through the groove walls on both sides of the U-shaped tube to improve the connection strength between the ISOFIX interface 330 and the steel wire rack 310 and enhance the stability of the steel wire rack 310.

[0098] When the seat frame 200 rotates around the rear cross bar 220 of the seat frame, the angle and relative position of the ISOFIX interface 330 and the seat frame 200 remain unchanged, so that the child seat can be easily installed. This solution solves the problem that the ISOFIX interface 330 in the prior art is not suitable for zero-gravity seats when it is fixedly installed on the rear cross bar 220 of the seat frame. Because when the seat frame 200 rotates around the rear cross bar 220 of the seat frame, the angle between the ISOFIX interface and the seat frame 200 changes, resulting in the inability to install the child seat, or after the child seat is installed, the seat frame inclination adjustment is limited or even cannot be adjusted.

[0099] like Fig.13The reinforcing side plate 211 is located on the outer side of the corresponding seat frame side plate 210, and the reinforcing side plate 211 is parallel to and opposite to the seat frame side plate body. The edge of the reinforcing side plate 211 is connected with a reinforcing side plate flange facing the seat frame side plate 210, and the reinforcing side plate flange overlaps with the corresponding part of the seat frame side plate flange and is welded together.

[0100] like Figures 1-2 As shown in Figures 21 and 22, the backrest side panel includes a side panel sheet metal 130, which includes a backrest side panel body 131 extending vertically, and the two side surfaces of the backrest side panel body 131 face the left and right sides of the seat respectively, and the front edge of the backrest side panel body 131 is connected to a side panel front flange 133, and the rear edge of the backrest side panel body 131 is connected to a side panel rear flange 132, and the side panel rear flange 132 and the side panel front flange 133 are located on the inner side of the backrest side panel body 131. The front edge of the backrest side panel body 131 gradually extends forward from the upper end to the middle of the backrest side panel body 131, so that the backrest side panel body 131 gradually widens from the upper end to the middle, thereby meeting the purpose of installing various seat accessory structural parts, connecting with the recliner, and increasing the strength of the seat frame side panel.

[0101] The two ends of the backrest upper transverse tube 110 extend downward to form side tubes 120, which are attached to and connected with the front sides of the corresponding side panel rear flanges 132 and the inner sides of the backrest side panel bodies 131. The upper parts of the side panel rear flanges 132, the upper parts of the side panel front flanges 133 and the upper parts of the backrest side panel bodies 131 surround and attach to the side tubes 120.

[0102] One of the side tubes 120 extends downward to the middle of the side plate along the rear flange 132 , and the other side tube 120 extends downward to the lower end along the rear flange 132 . A backrest side plate reinforcement is provided on the backrest side plate on this side. The backrest side plate reinforcement includes a first reinforcement sheet metal 140 and a second reinforcement sheet metal 150 .

[0103] The first reinforcing sheet metal 140 is connected between the corresponding side tube 120 and the side plate front flange 133, and the three of them form a hollow box-shaped structure. The first reinforcing sheet metal 140 includes a first reinforcing plate 141, which is arranged parallel to the backrest side plate body 131. The rear edge of the first reinforcing plate 141 is provided with a first rear flange 142, which is close to the side tube 120 and welded thereto. The front edge of the first reinforcing plate 141 is provided with a first front flange 143 facing the backrest side plate body 131, which is adapted to the shape of the side plate front flange 133, and is close to the side plate front flange 133 and welded thereto.

[0104] The second reinforcing sheet metal 150 is arranged on the outside of the backrest side plate body 131, and the second reinforcing sheet metal 150 is close to the outer side surface of the backrest side plate body 131 and the rear side surface of the side plate rear flange 132, and the second reinforcing sheet metal 150 is welded to the backrest side plate body 131. The second reinforcing sheet metal 150 includes a second reinforcing plate 151, and the second reinforcing plate 151 is close to the side plate rear flange 132. The second reinforcing plate 151 is connected to the edge of the backrest side plate body 131 with a second flange 152 facing forward, and the second flange 152 is close to the backrest side plate body 131 and welded thereto, and the lower part of the second flange 152 is consistent in shape with the lower part of the backrest side plate body 131. The second reinforcing plate 151 is formed with a strip-shaped reinforcing rib protruding backwards to improve its strength.

[0105] The left and right side plate sheet metals 130 of the seat back frame are mirror-symmetrical in structure to facilitate production, so only one side of the backrest side plate is reinforced by adding a first reinforcement sheet metal 140 and a second reinforcement sheet metal 150. During assembly, the side tube 120 and the two side plate sheet metals 130 are assembled first, and then the first reinforcement sheet metal 140 and the second reinforcement sheet metal 150 are welded to the side of the backrest side plate that needs to be reinforced.

[0106] like Figures 15 to 17 As shown, a guide and restraint mechanism 170 is provided at the rear side of the backrest side panel with the backrest side panel reinforcement. The guide and restraint mechanism 170 has a sliding cavity 176 for the seat belt to slide. The sliding cavity 176 is a continuous cavity or at least two separated cavities located on the same curve. The sliding cavity 176 defines a seat belt sliding path for the seat belt to slide. An elastic disturbance member 172 is provided on the seat belt sliding path. The elastic disturbance member 172 generates elastic vibration when being touched by the sliding seat belt, thereby playing a toggling role on the seat belt and reducing the resistance of the seat belt when it is retracted.

[0107] The guide restraint mechanism 170 includes a guide bar 171 , one side of which faces the corresponding side plate of the backrest, and a limiting plate 173 is arranged on the other side of the guide bar 171 .

[0108] At least two limit plate groups are arranged on the guide bar 171, and each limit plate group includes two limit plates 173, which are arranged opposite to each other and are respectively located on both sides of the guide bar 171. The limit plates 173 are in a strip shape, extending along the direction of the guide bar 171, and the cross section of the limit plate 173 is L-shaped, one long side of the limit plate 173 is connected to the edge of the rear side of the guide bar 171, and the other long side of the limit plate 173 is located at the rear side of the guide bar 171 and is parallel to it. A flat cavity is enclosed between the limit plate 173 and the guide bar 171, and the cavity forms the sliding cavity 176.

[0109] The guide strip 171 has at least one curved portion to adapt to the curve of the back side panel. Fig.17 The backrest side plate includes a rear convex section located at the upper part and a front convex section located at the lower part, and the rear convex section and the front convex section are smoothly transitionally connected. The curved portion is located between the limit plate groups.

[0110] One form of the elastic disturbance member 172 is a corrugated plate, which is formed by the partial segments of the guide strip 171 being deformed alternately toward both sides thereof, and the lines on the corrugated plate are perpendicular to the extending direction of the seat belt sliding path. The corrugated plate is located between the limit plate groups.

[0111] At least three guide bar seats 174 are fixed to the rear side of the backrest side panel where the guide bar 171 is located, all the guide bar seats 174 are distributed along the backrest side panel, the same guide bar 171 is installed on all the guide bar seats 174, and the limiting plate group is distributed between the guide bar seats 174.

[0112] like Fig.15 and 16 A guide bar seat 174 is provided at the recessed part at the rear side of the front convex section, and a curved limit wire 175 is fixedly provided on the guide bar seat 174. The limit wire 175 goes around the guide bar 171 backwards, and the two ends of the limit wire 175 are respectively fixedly connected to the guide bar seat 174, and the middle section of the limit wire 175 is parallel to the guide bar 171. Since the direction of the seat belt changes greatly at the limit wire 175, in order to make the seat belt slide along the rear side of the backrest side plate, a limit wire 175 that can withstand a large tension is provided to constrain it.

[0113] When in use, a safety belt (not shown in the figure) is inserted into the sliding cavity 176, and the safety belt slides along the sliding path of the safety belt, and the side of the safety belt facing the inner arc surface of the curve of the sliding path of the safety belt is pressed against the corrugated plate. Since the safety belt is inserted into the sliding cavity 176 along the guide strip 171, the safety belt bends along the direction of the guide strip 171, especially at the position of the limiting steel wire 175, the rear side of the safety belt is pressed against the limiting steel wire 175. However, at the corrugated plate, the front side of the safety belt is pressed against the corrugated plate. Since the safety belt passes through multiple curved parts, it rubs against the inner wall of the sliding cavity 176 and the guide strip 171 during the sliding process, so the safety belt may get stuck when it is retracted. When the corrugated plate is touched by the safety belt and vibrates to both sides, the safety belt is always in a state of small amplitude vibration when it is retracted and slides, which can effectively prevent jamming.

[0114] like Figures 18 to 20 The support frame 160 includes a support body, a reversing slot 164 is fixedly disposed on the top of the support body, the reversing slot 164 is disposed along the front-rear direction, and the rear end of the reversing slot 164 corresponds to the seat belt sliding path. A positioning connection portion is fixedly disposed at the bottom of the support body, and the support body is a box-shaped structure with an internal cavity surrounded by a plate material, so as to allow the support body to collapse downward when the load loaded on the reversing slot 164 exceeds its compressive strength.

[0115] Specifically, the bracket body includes a first support plate 161 and a second support plate 162 which are arranged vertically, and the two are arranged opposite to each other. The first support plate 161 and the second support plate 162 support the same reversing slot 164 above, and the first support plate 161 and the second support plate 162 are respectively located below the slot walls on both sides of the reversing slot 164, and ribs 163 are respectively formed on the first support plate 161 and the second support plate 162. The ribs 163 extend parallel to the bottom surface of the reversing slot 164, and the ribs 163 are formed by partially protruding inward or outward from the plate surrounding the bracket body.

[0116] After the ribs 163 are processed, the local area of ​​the plate where the ribs 163 are located has a greater ability to resist the force acting in the direction of the ribs 163, and the ability to resist the compressive stress perpendicular to the ribs 163 is relatively little increased. When the tension applied by the safety belt to the bottom surface of the reversing groove 164 exceeds its compressive strength, the bracket body collapses downward as a whole, and the height is reduced. However, the bracket body is not prone to deformation in other directions. After the bracket body collapses downward as a whole, the safety belt is closer to the seat back, restraining the occupant's torso near the seat back, reducing the range of the occupant's torso moving forward, and further improving safety.

[0117] A transverse connecting plate 165 is also provided between the first support plate 161 and the second support plate 162. The transverse connecting plate 165 is located in the vertical plane. Both side edges of the transverse connecting plate 165 are respectively connected to the same side edges of the first support plate 161 and the second support plate 162. The transverse connecting plate 165 is integrally formed with the first support plate 161 and the second support plate 162 to form the bracket body.

[0118] The second support plate 162 extends downward beyond the lower edge of the transverse connecting plate 165 , and at least two ribs 163 are formed on the second support plate 162 .

[0119] The positioning connection part is an arc-shaped plate, and there are two arc-shaped plates, namely a first arc-shaped plate 166 and a second arc-shaped plate 167. The first arc-shaped plate 166 is integrally formed below the first support plate 161, and the inner arc surface of the first arc-shaped plate 166 faces downward. The second arc-shaped plate 167 is integrally formed below the second support plate 162, and the inner arc surface of the second arc-shaped plate 167 faces the first support plate 161. During assembly, the inner arc surface of the first arc-shaped plate 166 falls on the upper cross tube 110 of the backrest and is welded thereto, and the inner arc surface of the second arc-shaped plate 167 is abutted against the corresponding side tube 120 and is welded thereto, thereby fixing the support frame 160 on the backrest frame. The reversing through groove 164 is separated from the upper cross tube 110 of the backrest, thereby reserving space for the collapse of the bracket.

[0120] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A compact multi-directionally adjustable zero-gravity chair frame, comprising a base (501), a seat frame (200) being arranged above the base (501), and a backrest frame (100) being connected to the rear of the seat frame (200); The seat frame (200) includes two seat frame side panels (210) arranged opposite to each other on the left and right, and the backrest frame (100) includes two backrest side panels arranged opposite to each other on the left and right, the two backrest side panels are arranged vertically, and the two backrest side panels are respectively connected to the corresponding seat frame side panels (210) through angle adjusters; Features: Seat frame adjustment connecting rods (580) are respectively provided between the front and rear parts of the seat frame (200) and the base (501), and the seat frame adjustment connecting rods (580) are all rotatable in a vertical plane, and each seat frame adjustment connecting rod (580) is hinged to the base (501) via a hinge shaft (502); The seat frame adjustment link (580) located at the rear of the seat frame (200) is hinged to the seat frame (200), and the seat frame adjustment link (580) located at the front of the seat frame (200) is connected to the seat frame (200) via an inclination adjustment link (590); The seat frame adjustment connecting rods (580) located at the front and rear of the seat frame (200) are respectively connected to a rotation driving mechanism (500); A reinforcing side plate (211) is provided on the seat frame side plate (210) on any side of the seat frame (200), a backrest side plate reinforcement is provided on the backrest side plate on that side, and a guide restraint mechanism (170) for guiding the sliding of a safety belt is provided on the rear side of the backrest side plate on that side; A seat frame front cross bar (230) is connected between the front ends of the two seat frame side plates (210), and a seat frame rear cross bar (220) is connected between the rear ends. Both ends of the seat frame rear cross bar (220) are rotatably inserted into the corresponding seat frame side plates (210). The two ends of the seat frame rear cross bar (220) are respectively connected to the base (501) with a seat frame adjustment link (580), and the two seat frame adjustment links (580) are arranged opposite to each other on the left and right. The upper ends of the two seat frame adjustment links (580) are welded to the seat frame rear cross bar (220), and any one of the seat frame adjustment links (580) is connected to the rotation drive mechanism (500); A seat frame adjustment link (580) and an inclination adjustment link (590) are respectively connected between the front ends of the two seat frame side plates (210) and the base (501), the two seat frame adjustment links (580) are arranged opposite to each other on the left and right, and the two inclination adjustment links (590) are also arranged opposite to each other on the left and right. A synchronization rod (503) is connected between the two seat frame adjustment links (580), and any one of the seat frame adjustment links (580) is connected to the rotation drive mechanism (500); The synchronization rod (503) is a hollow rod, and the two ends of the synchronization rod (503) are respectively provided with hinged reinforcement members (504), and the hinged reinforcement member (504) is tubular. The hinged reinforcement member (504) comprises an insertion section and a shearing section that are coaxially connected, and the insertion section is inserted into the synchronization rod (503). The outer wall of the shearing section is fixedly connected to the seat frame adjustment link (580), and an annular flange protruding outward is provided between the insertion section and the shearing section, and the annular flange separates the synchronization rod (503) and the seat frame adjustment link (580); A hinge bolt (505) is inserted into the hinge reinforcement (504), a screw rod of the hinge bolt (505) is inserted into the hinge reinforcement (504) and matched with the thread thereof, and the inclination adjustment connecting rod (590) is rotatably sleeved on the hinge bolt (505); The guide restraint mechanism (170) has a sliding cavity (176) for the seat belt to slide, the sliding cavity (176) is a continuous cavity or at least two separated cavities located on the same curve, the sliding cavity (176) defines a seat belt sliding path for the seat belt to slide, and an elastic disturbance member (172) is arranged on the seat belt sliding path; A support frame (160) for reversing the direction of the safety belt is arranged at the upper end of the backrest side plate where the guide restraint mechanism (170) is located, the support frame (160) comprising a support body, a reversing slot (164) is fixedly arranged above the support body, the reversing slot (164) is arranged along the front-rear direction, and the rear end of the reversing slot (164) corresponds to the sliding path of the safety belt; A positioning connection portion is fixedly arranged below the bracket body. The bracket body is a box-shaped structure surrounded by a plate material and having an internal cavity, so as to allow the bracket body to collapse downward when the load applied to the reversing slot (164) exceeds its compressive strength.

2. The compact multi-directionally adjustable zero-gravity seat frame according to claim 1, characterized in that: The rotation driving mechanism (500) comprises an arc-shaped rack (511) and a driving wheel assembly, wherein the driving wheel assembly comprises a driving gear (530) meshing with the arc-shaped rack (511); The arc-shaped rack (511) is fixedly connected to the base (501), the arc-shaped rack (511) is located in a vertical plane, and the center line of the arc-shaped rack (511) is colinear with the center line of the corresponding hinge shaft (502); The driving wheel assembly is arranged on the seat frame adjusting connecting rod (580) and rotates therewith.

3. The compact multi-directionally adjustable zero-gravity seat frame according to claim 2, characterized in that: The base (501) is provided with a rack support (520), the rack support (520) is plate-shaped, the rack support (520) is vertically arranged, a toothed plate (510) is fixedly attached to one side of the rack support (520), a fan-shaped annular hole (512) is opened on the toothed plate (510), and the arc-shaped rack (511) is arranged on any arc-shaped edge of the fan-shaped annular hole (512); An arc-shaped hole (522) is provided on the rack support (520) directly facing the arc-shaped rack (511), and the center line of the arc-shaped hole (522) is colinear with the axis line of the hinge shaft (502); The driving wheel assembly further comprises a bracket group and a driving motor (560), wherein the bracket group is fixedly connected to the seat frame adjusting connecting rod (580); The driving motor (560) is fixedly mounted on the bracket group, and the output shaft (570) of the driving motor (560) is rotatably mounted on the bracket group, and the output shaft (570) is inserted into the arc-shaped hole (522) and the fan-shaped hole (512); The output shaft (570) is fixedly provided with the driving gear (530), and the driving gear (530) is located in the fan-shaped hole (512).

4. The compact multi-directionally adjustable zero-gravity seat frame according to claim 3, characterized in that: The bracket group includes a driving wheel bracket (550) and a motor bracket (540), both of which are formed by plate sheet metal processing and fixedly connected to the corresponding seat frame adjustment connecting rod (580), and both are located in a vertical plane and are separated on both sides of the tooth plate (510) and the rack bracket (520); Both ends of the output shaft (570) are rotatably mounted on the driving wheel bracket (550) and the motor bracket (540) respectively; The driving wheel bracket (550) and the motor bracket (540) are both in the shape of long strips; the motor bracket (540) and the seat frame adjustment connecting rod (580) are formed by processing from the same sheet metal; and the driving motor (560) is mounted on the motor bracket (540); One end of the driving wheel bracket (550) is connected to the motor bracket (540) via a connecting rod, and the output shaft (570) is passed through the other end.

5. The compact multi-directionally adjustable zero-gravity seat frame according to claim 1, characterized in that: The guide restraint mechanism (170) comprises a guide bar (171) arranged at the rear side of the backrest frame, one side of the guide bar (171) faces the backrest frame, and a limit plate (173) is arranged on the other side of the guide bar (171), and a flat cavity is formed between the limit plate (173) and the guide bar (171), and the cavity forms the sliding cavity (176); The local segments of the guide strip (171) are deformed alternately on both sides thereof to form a corrugated plate, the corrugated plate forms the elastic disturbance member (172), and the lines on the corrugated plate are perpendicular to the extension direction of the safety belt sliding path; The guide strip (171) has at least one bent portion.

6. A compact multi-directionally adjustable zero-gravity seat frame according to claim 1 or 2, characterized in that: An upper backrest transverse tube (110) is connected between the upper ends of the two backrest side panels, and a lower backrest transverse plate is connected between the lower ends; The backrest side panel comprises a side panel sheet metal (130), the side panel sheet metal (130) comprises a backrest side panel body (131) extending vertically, the two side surfaces of the backrest side panel body (131) respectively face the left and right sides of the seat, the front edge of the backrest side panel body (131) is connected to a side panel front flange (133), the rear edge of the backrest side panel body (131) is connected to a side panel rear flange (132), the side panel rear flange (132) and the side panel front flange (133) are located on the inner side of the backrest side panel body (131); The two ends of the backrest upper transverse tube (110) respectively extend downward to form side tubes (120), and the side tubes (120) are attached to the front side of the corresponding side plate rear flange (132) and the inner side of the backrest side plate body (131), and are connected thereto; The backrest side plate reinforcement comprises a first reinforcement sheet metal (140) and a second reinforcement sheet metal (150); The side tube (120) where the guide and restraining mechanism (170) is located extends along the rear flange (132) of the side plate to its lower end, and the first reinforcing sheet metal (140) is connected between the side tube (120) and the front flange (133) of the side plate, and the three form a hollow box-shaped structure; The second reinforcing sheet metal (150) is arranged on the outer side of the backrest side panel body (131), and the second reinforcing sheet metal (150) is attached to the outer side surface of the backrest side panel body (131) and the rear side surface of the side panel rear flange (132). The second reinforcing sheet metal (150) is welded to the backrest side panel body (131).

7. A compact multi-directionally adjustable zero-gravity seat frame according to claim 1 or 2, characterized in that: The seat frame side plate (210) comprises a seat frame side plate body, the edge of the seat frame side plate body is connected to a seat frame side plate flange facing outward, the reinforcing side plate (211) is located on the outer side of the corresponding seat frame side plate (210), the reinforcing side plate (211) is parallel and directly opposite to the seat frame side plate body, the edge of the reinforcing side plate (211) is connected to a reinforcing side plate flange facing the seat frame side plate (210), the reinforcing side plate flange overlaps with the corresponding portion of the seat frame side plate flange and is welded; An ISOFIX bracket (300) is installed at the rear of the two seat frame side panels (210), and the ISOFIX bracket (300) includes a long steel wire frame (310), and a mounting frame (320) is fixedly arranged at both ends of the steel wire frame (310), and the two mounting frames (320) correspond to the two seat frame side panels (210) one by one and are fixedly connected; Two ISOFIX interfaces (330) are arranged on the steel wire frame (310) at intervals. The ISOFIX interface (330) is formed by bending a section of steel wire in the same plane. The two ends of the steel wire are bent vertically toward the same side of the middle section to form the ISOFIX interface (330). The two ends of the steel wire are fixed to the steel wire frame (310). The two ends of the steel wire extend forward and upward from between the seat frame (200) and the backrest frame (100) along a direction perpendicular to the length of the steel wire frame (310), so that the middle section of the steel wire is located above the seat frame (200).

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