Vehicle seat with backward turning function and vehicle

Abstract

The invention relates to a vehicle seat with a back-turning function, which is characterized in that the vehicle seat is provided with a seat cushion assembly and a back-turning driving assembly capable of driving the seat cushion assembly to pivotally move between a design position and a back-turning position of the seat cushion assembly, the reclining movement process of the cushion assembly from the design position to the reclining position comprises a first reclining movement phase and a second reclining movement phase following the first reclining movement phase, during the first reclining movement phase of the cushion assembly, the cushion assembly pivots backwards around a first pivot axis, and during the second reclining movement phase of the cushion assembly, the cushion assembly pivots backwards around a second pivot axis. And during a second backward turning movement phase of the seat cushion assembly, the seat cushion assembly pivots backwards around a second pivot axis, and the first pivot axis and the second pivot axis do not coincide with each other.

Description

Technical Field

[0001] The invention relates to a vehicle seat with a rear-folding function and a vehicle. Background Art

[0002] With the development of the automotive industry, the requirements for the third row of MVPs (multi-purpose vehicles) are becoming increasingly higher, taking into account both aesthetics and usable space and cost.

[0003] Some existing reclining seats use a single-axis rotation principle, with the center of the axis designed above the carpet surface. When the seat is flipped flat, the plastic covering in the axis area will cause a noticeable bulge on the carpet surface.

[0004] Some existing reclining seats also use a single-axis rotation principle, with the center of the axis designed below the carpet surface. However, achieving a flat-folding seat requires significant requirements for the axis size, layout space, and seat cushion design angle, which is detrimental to comfort. Summary of the Invention

[0005] The object of the present invention is to provide a vehicle seat with a rear-folding function and a vehicle, which can solve at least one of the above-mentioned problems.

[0006] To achieve the above-mentioned object, the present invention provides a vehicle seat with a rearward-folding function, characterized in that the vehicle seat comprises a seat cushion assembly and a rearward-folding drive assembly capable of driving the seat cushion assembly to pivot between its design position and a rearward-folding position.

[0007] The rearward flipping movement process of the seat cushion assembly from the design position to the rearward flipping position includes a first rearward flipping movement stage and a second rearward flipping movement stage after the first rearward flipping movement stage.

[0008] During the first rearward flipping movement phase of the seat cushion assembly, the seat cushion assembly pivots rearward about a first pivot axis, and during the second rearward flipping movement phase of the seat cushion assembly, the seat cushion assembly pivots rearward about a second pivot axis, and the first pivot axis and the second pivot axis do not coincide with each other.

[0009] The vehicle seat of the present invention decomposes the rearward folding movement process of the seat cushion assembly (and therefore the entire vehicle seat) into two different rearward folding movement stages, so that the two rearward folding movement stages can be personalized designed, which overall helps to simply implement the rearward folding movement process.

[0010] Advantageously, in the design position of the seat cushion assembly, the first pivot axis is located below the second pivot axis, and during the first rearward tilting movement phase of the seat cushion assembly, the second pivot axis moves rearward and downward. The rearward and downward movement of the second pivot axis causes the center of gravity of the seat to be lowered further during the first rearward tilting movement phase of the seat cushion assembly, thereby facilitating rearward tilting movement.

[0011] Advantageously, the rear flip drive assembly includes at least one hinge assembly, the hinge assembly having a hinge body, wherein the hinge body is pivotally connected to a foot assembly fixed to the vehicle body via a pivot shaft at its lower end, and is pivotally connected to a seat cushion assembly via a pivot shaft at its upper end, wherein the first pivot axis is provided by the pivot shaft at the lower end, and the second pivot axis is provided by the pivot shaft at the upper end. Here, by providing the hinge assembly, two pivot axes can be provided simultaneously to achieve two stages of movement. The introduction of the hinge assembly ensures that the pivot structure design will not cause a noticeable bulge (<20mm) on the carpet surface, and is more advantageous in terms of layout space.

[0012] Advantageously, during the first rearward-tilting movement stage of the seat cushion assembly, the seat cushion assembly and the hinge assembly pivot backward together about the first pivot axis relative to the foot assembly, and the seat cushion assembly and the hinge assembly do not pivot relative to each other; and during the second rearward-tilting movement stage of the seat cushion assembly, the seat cushion assembly pivots backward about the second pivot axis relative to the hinge assembly, and the hinge assembly and the foot assembly do not pivot relative to each other.

[0013] Advantageously, the rear flip drive assembly comprises two opposing connecting rods, and the anchor assembly has a slide slot, wherein each connecting rod is slidably hinged to the corresponding slide slot at the lower end and is connected to the pivot shaft at the upper end of the hinge body at the upper end.

[0014] Advantageously, the rearward tilt drive assembly includes a seat drive assembly configured for at least one of the two connecting rods, the seat drive assembly comprising a motor and an output gear driven by the motor. The at least one connecting rod comprises a toothed plate at its upper end, the toothed plate being in meshing engagement with the output gear. The seat drive assembly is fixed to the seat assembly and can drive the seat assembly to pivot about the second pivot axis by driving the output gear to perform a climbing motion on the toothed plate. The transmission mechanism formed by the gear and toothed plate can amplify the motor's driving torque, thereby reducing the power requirement on the electrode itself.

[0015] Advantageously, in the design position of the seat cushion assembly, the hinge assembly is tilted backwards away from the vertical direction. Thus, in the first rearward tilting movement phase, the weight of the vehicle seat can always support the rearward pivoting movement of the hinge assembly.

[0016] Advantageously, a first elastic member is provided to cushion the rearward pivoting movement of the seat cushion assembly relative to the hinge assembly during the second rearward tilting phase of the seat cushion assembly; and / or a second elastic member is provided to assist the rearward pivoting movement of the hinge assembly relative to the anchor assembly during the first rearward tilting phase of the seat cushion assembly. Thus, during the first rearward tilting phase, the second elastic member (and, if necessary, the weight of the vehicle seat) can support the initiation of the rearward pivoting movement of the hinge assembly and, if necessary, the entire rearward pivoting process. During the second rearward tilting phase, after the seat cushion assembly has tilted backward past its upright position, the seat cushion drive assembly needs to provide a resistive torque to maintain a constant rearward tilting speed. The first elastic member provides a resistive torque to assist the seat cushion drive assembly in resisting the weight of the seat, thereby cushioning the rearward pivoting movement of the hinge assembly under the influence of gravity.

[0017] Advantageously, at least one hinge assembly has an upper torsion spring configured as the first elastic member, which is stopped with its upper end at an upper stop point on the seat cushion assembly and with its lower end at a lower stop point on the hinge assembly, wherein, during the second rearward flipping movement phase of the seat cushion assembly, the upper torsion spring is capable of cushioning the rearward pivoting movement of the seat cushion assembly relative to the hinge assembly.

[0018] Advantageously, the upper end stop point is provided by a hole on the rear cross tube of the seat cushion assembly, and the upper end of the upper torsion spring is inserted into and stopped in the hole, and / or, the lower end stop point is provided by a transverse curl on the hinge body, and the lower end of the upper torsion spring is abutted against and stopped on the curl from the inside.

[0019] Advantageously, at least one hinge assembly has a lower torsion spring configured as the second elastic member, which has its rear end end stopped at a rear end stop point on the hinge assembly and its front end end stopped at a front end stop point on the foot assembly, wherein the lower torsion spring is in a tensioned state in the design position of the seat cushion assembly, and during the first rearward flipping movement stage of the seat cushion assembly, the lower torsion spring can assist the rearward pivoting movement of the hinge assembly relative to the foot assembly.

[0020] Advantageously, the rear end stop point is provided by a hinge transverse joint of the hinge body, and the rear end end of the lower torsion spring abuts and stops on the front side of the hinge transverse joint, and / or, the front end stop point is provided by a ground anchor stop rod, and the ground anchor stop rod is fixed on the ground anchor body, and the front end end of the lower torsion spring abuts and stops on the ground anchor stop rod from the rear side.

[0021] Advantageously, the first elastic member is configured as a first coil spring, which can cushion the rearward pivoting movement of the seat cushion assembly relative to the hinge assembly during the second rearward flipping movement stage of the seat cushion assembly; and / or the second elastic member is configured as a second coil spring, which can assist the rearward pivoting movement of the hinge assembly relative to the anchor assembly during the first rearward flipping movement stage of the seat cushion assembly.

[0022] Advantageously, the hinge assembly has a hinge stop rod fixed thereon, which has a stop portion for abutting against the seat cushion assembly, wherein, during the first rearward flipping movement stage of the seat cushion assembly, the stop portion of the hinge stop rod always abuts against the first stop point on the seat cushion assembly, so that the seat cushion assembly and the hinge assembly do not pivot relative to each other.

[0023] Advantageously, during the second rearward tilting movement phase of the seat cushion assembly, the blocking portion of the hinge blocking rod is disengaged from the first blocking point.

[0024] Advantageously, in the rearwardly tilted position of the seat assembly, the stop portion of the hinge stop lever abuts a second stop point on the seat assembly that is different from the first stop point, so that the seat assembly and the hinge assembly do not pivot relative to each other.

[0025] Advantageously, at the end of the first rearward tilting movement phase of the seat cushion assembly, the seat cushion assembly is oriented substantially vertically.

[0026] Advantageously, at the end of the first rearward tilting movement phase of the seat cushion assembly, the hinge body of the hinge assembly pivots to abut against a hinge stop point, so that the hinge assembly and the anchor assembly do not pivot relative to each other.

[0027] Advantageously, a seat drive assembly is disposed on at least one side of the seat cushion assembly. The drive assembly includes a motor and a recliner driven by the motor. The recliner comprises two discs that can rotate relative to each other, one of which is fixed to the seat cushion assembly, and the other to a pivot shaft at the upper end. By driving the two discs to rotate relative to each other, the seat cushion assembly can be driven to pivot about the pivot shaft at the upper end. The transmission mechanism formed by the recliner can amplify the motor's driving torque, thereby reducing the power requirement for the electrode itself.

[0028] Advantageously, the vehicle seat further comprises a backrest assembly which is pivotally adjustable towards and away from the seat cushion assembly, the backrest assembly being in a folded state towards the seat cushion assembly during the pivoting movement of the seat cushion assembly between its design position and the rearwardly tilted position.

[0029] In order to achieve the above-mentioned purpose, the present invention also proposes a vehicle, characterized in that the vehicle has a vehicle seat of the present invention, wherein a seat receiving groove is provided in the body of the vehicle, and in the rearward folded position of the seat cushion assembly, the vehicle seat is received in the seat receiving groove.

[0030] Advantageously, a seat foot mounting groove is provided in the vehicle body, and a foot assembly of the vehicle seat is fixed in the seat foot mounting groove and is located below the carpet surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be explained in more detail below with the aid of exemplary embodiments with reference to the accompanying drawings, but the present invention is not limited to the exemplary embodiments depicted in the drawings and described in detail below. The accompanying drawings are as follows:

[0032] Figure 1a A schematic perspective view schematically illustrates the arrangement position or application scenario of the vehicle seat of the present invention inside a vehicle body;

[0033] Figure 1b A schematic exploded view schematically illustrates the matching relationship between the vehicle seat and the vehicle body of the present invention;

[0034] Figure 2a A schematic side view shows the position of the vehicle seat of the present invention in a folded state before it is folded back;

[0035] Figure 2b A schematic side view shows the position of the vehicle seat of the present invention in a folded state after being flipped back into the seat receiving slot;

[0036] Figure 3a A schematic perspective view of a vehicle seat according to the present invention is shown;

[0037] Figure 3b Shown in a schematic exploded view Figure 3a Vehicle seats in;

[0038] Figure 4a and Figure 4b The hinge assembly is schematically shown in perspective and exploded views respectively;

[0039] Figure 4c The foot assembly is schematically shown in an exploded view;

[0040] Figure 5 A partial perspective view shows the installation positions of the hinge assembly and the anchor assembly in the vehicle seat;

[0041] Figure 6a and Figure 6b A connecting rod with a tooth structure is shown in a perspective view and an exploded perspective view respectively;

[0042] Figure 7a and Figure 7b The installation position of the right connecting rod assembly on the seat cushion assembly is shown in a perspective view from the outside and an exploded perspective view respectively;

[0043] Figure 7c Show Figure 7b The cross-sectional view at AA in FIG.

[0044] Figure 8a and Figure 8b The sliding articulation of the right connecting rod assembly on the anchor assembly is shown in a perspective view from the inside and an exploded perspective view respectively;

[0045] Figure 8c by Figure 8a The cross-sectional view at the middle BB shows the hinge part;

[0046] Figure 8d Show Figure 8b The cross-sectional view at CC;

[0047] Figure 9a and Figure 9b The seat drive assembly is shown in a perspective view and an exploded perspective view respectively;

[0048] Figure 10 A perspective view showing the mounting bracket of the seat drive assembly;

[0049] Figure 11a and Figure 11b The fixed connection of the seat cushion drive assembly to the right seat cushion side panel is shown in a perspective view from the inside and an exploded perspective view respectively;

[0050] Figure 12a and Figure 12b The meshing of the tooth plate and the gear is shown in a perspective view and a side view from the outside respectively;

[0051] Figure 13a and Figure 13b The seat cushion assembly is shown in a design position in a side view and a schematic diagram, wherein the backrest assembly 9 is still in its open state;

[0052] Figure 14a and Figure 14b The seat cushion assembly is shown in a design position in a side view and a schematic diagram, where the backrest assembly 9 is in its folded state;

[0053] Figure 15a The initial position of the seat cushion assembly in the first rearward tilting movement stage is shown;

[0054] Figure 15b A cross-sectional view shows the tensioned state of the lower torsion spring at the initial position of the first backward flipping movement stage;

[0055] Figure 16a and Figure 16b A process position of the first back flip movement phase is shown in different views respectively;

[0056] Figure 17a and Figure 17b A vehicle seat is shown in a side view and a schematic diagram, respectively, in a final position of a first rearward folding movement phase;

[0057] Figure 17c The figure shows that in the final position of the first rearward tilting movement stage, the stop portion of the hinge stop lever abuts against the stop point a of the seat cushion side panel;

[0058] Figure 17d It shows that in the final position of the first backward-folding movement stage, the hinge body has moved to abut against the hinge stop point;

[0059] Figure 18a The initial position of the seat cushion assembly in the second rearward tilting movement stage is shown;

[0060] Figure 18b A cross-sectional view shows the tensioned state of the upper torsion spring at the initial position of the second backward flipping movement stage;

[0061] Figure 19a and Figure 19b A process position of the second backflip movement phase is shown in different views respectively;

[0062] Figure 20a and Figure 20b The vehicle seat is shown in a side view and a schematic diagram in the final position of the second rearward folding movement phase;

[0063] Figure 20c The figure shows that in the final position of the second rearward tilting movement stage, the stop portion of the hinge stop lever abuts against the stop point b of the seat cushion side panel;

[0064] Figure 20d and Figure 20e The final tension state of the upper torsion spring in the final position of the second backward flipping movement stage is shown in a perspective view and a cross-sectional view respectively;

[0065] Figures 21a to 21c The arrangement of the double coil spring solution is shown in perspective, exploded and cross-sectional views respectively; and

[0066] Figure 22 A modified embodiment of the vehicle seat according to the present invention is schematically shown. DETAILED DESCRIPTION

[0067] Illustrative embodiments of the present invention are described below. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but not all features of the actual systems, structures and devices are described, such as well-known functions or structures are not described in detail to avoid unnecessary details that make the present invention unclear. It should be understood that in any actual application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related restrictions need to be followed, and these specific goals may vary from one actual application to another. In addition, it should be understood that such specific implementation decisions, although complex and time-consuming, are routine tasks for those of ordinary skill in the art who benefit from the present invention.

[0068] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of those terms and phrases by those skilled in the relevant art. No special definition of a term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art, is intended to be implied by consistent usage of a term or phrase herein. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly set forth in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0069] Unless the content requires otherwise, throughout the following description, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open and inclusive sense, that is, as in "including but not limited to".

[0070] The vehicle seat 1 of the present invention can be installed in a vehicle, for example, as a seat 1 in the last row (i.e., third or second row) of a vehicle, where it is desired to be concealed beneath the vehicle's carpet when not in use. The vehicle of the present invention can be an automobile, such as an MVP (Multi-Purpose Vehicle), a sedan, or a commercial vehicle.

[0071] The following establishes a vehicle xyz coordinate system based on conventional automotive engineering techniques to facilitate the subsequent description of the relative positions of various components in this disclosure. The terms "left," "right," "front," and "rear" are used with an occupant normally seated in seat 1. "Left" and "right" refer to the occupant's left and right positions in the x-direction, while "front" and "rear" refer to the occupant's front and rear positions in the y-direction.

[0072] The following describes various embodiments of the vehicle seat 1 of the present invention with reference to the accompanying drawings. It should be understood that for better visibility, only the frame is shown in the drawings, while components not directly related to the invention, such as seat covers and foaming, are omitted.

[0073] Figure 1a The schematic perspective view provides an overview of the arrangement position or application scenario of the vehicle seat 1 according to the present invention within the vehicle body 2 , specifically on the vehicle interior floor. Figure 1b A schematic exploded view provides an overview of the mating relationship between the vehicle seat 1 of the present invention and the vehicle body 2. It can be seen that the vehicle body 2 has two opposing seat foot mounting slots 4 located below the carpet surface 3 and two opposing vehicle body locking hooks 5 located above the carpet surface 3. These cooperate to secure the vehicle seat 1 to the vehicle body 2 in the use position. It can also be seen that the vehicle body 2 has a seat receiving slot 6 located behind the vehicle seat 1 below the carpet surface 3 for accommodating the vehicle seat 1 in its rearward folded position.

[0074] Figure 2a The position of the vehicle seat 1 according to the invention in the folded state before it is folded back is shown in a schematic side view. Figure 2b A schematic side view shows the position of the vehicle seat 1 of the present invention in a folded state after being folded back into the seat receiving groove 6. It can be seen that the bottom surface 7 of the vehicle seat 1 can be made of the same material as the carpet surface 3, so that in the folded back position, the bottom surface 7 is flush with and integrated with the surrounding carpet surface 3, achieving an aesthetically pleasing effect (see FIG. Figure 2b ).

[0075] Figure 3a The vehicle seat 1 according to the invention is shown in a schematic perspective view. Figure 3b Shown in a schematic exploded view Figure 3a The vehicle seat 1 in which some components on the left side that are opposite to the components on the right side are omitted. Figure 3a and Figure 3b The structural components and connection relationship of the vehicle seat 1 of the present invention are briefly introduced.

[0076] The vehicle seat 1 includes a seat cushion assembly 8, a backrest assembly 9 that can be adjusted toward or away from the seat cushion assembly 8 via a backrest drive motor 91, and a rearward tilt drive assembly that can drive the seat cushion assembly 8 (and therefore the entire vehicle seat 1) to pivot between its design position and a rearward tilt position. The backrest assembly 9 can be connected to the seat cushion assembly 8. In the design position of the seat cushion assembly 8, the seat cushion assembly 8 is located above the carpet surface 3 with its bottom surface 7 facing the carpet surface 3. In this state, the seat cushion assembly 8 corresponds to its state when a passenger is seated. In the rearward tilt position of the seat cushion assembly 8, the seat cushion assembly 8 is located below the carpet surface 3, with its bottom surface 7 being flush with or substantially aligned with the carpet surface 3.

[0077] The rear flip drive assembly comprises two opposite foot retracting assemblies 10 at the front end, which can be respectively releasably connected to the body lock hook 5 on the body 2 in the design position of the seat cushion assembly 8 (see Figure 1a and Figure 1b ).

[0078] The rear flip drive assembly includes two opposing anchor assemblies 11 at the rear end, which can be respectively accommodated in the seat anchor mounting grooves 4 on the vehicle body 2, and the anchor assemblies 11 are fixed in the seat anchor mounting grooves 4 by passing bolts 12 through the anchor assemblies 11 and threadedly connected to the threaded holes 13 on the seat anchor mounting grooves 4 (see Figure 1a and Figure 1b ).

[0079] The rearward tilt drive assembly also includes two opposing hinge assemblies 14 at the rear end of the seat 1. Each hinge assembly 14 is pivotally connected to a corresponding anchor assembly 11 at its lower end, and is pivotally connected to the seat cushion assembly 8 at its upper end via a common support rod 15, thereby supporting the vehicle seat 1 on the vehicle body 2 at the rear end. For example, while simultaneously passing through the two hinge assemblies 14, the support rod 15 also passes through the two seat cushion side panels 16 of the seat cushion assembly 8 and may be exposed on the outside of the two seat cushion side panels 16.

[0080] The rearward tilt drive assembly further includes two connecting rod assemblies at the rear end, each of which has a connecting rod 17 and is arranged opposite to each other. Here, either the connecting rods 17 of both connecting rod assemblies are configured as a sector-shaped tooth plate 171 with a tooth structure at the upper end; or the connecting rod 17 of one connecting rod assembly is configured as a sector-shaped tooth plate 171 with a tooth structure, while the connecting rod 17 of the other connecting rod assembly is not provided with a tooth structure (see Figure 21b The connecting rod 17 is slidably hinged at its lower end in the guide groove 116 on the anchor assembly 11, and its upper end is passed through the support rod 15 on the outside of the seat cushion side panel 16 and is fixedly connected to the support rod 15, for example, welded or form-locked.

[0081] The rear-folding drive assembly also includes at the rear end at least one seat cushion drive component 19 located at the rear end of the seat 1 and fixed to the seat cushion side panel 16, which has a drive motor 191 and an output gear 21. Through the engagement of the output gear 21 with the corresponding tooth plate 171 of the connecting rod 17, the seat cushion assembly 8 of the vehicle seat 1 can be driven to pivot between its design position and the rear-folding position.

[0082] The following combination Figure 4a 、 Figure 4b 、 Figure 4c and Figure 5 The structural composition and connection relationship of the hinge assembly 14 and the anchor assembly 11 of the rear flip drive assembly are introduced.

[0083] See also Figure 4a and Figure 4bThe hinge assembly 14 includes a hinge body 141 having two opposite hinge side tabs 1411 and a hinge transverse tab 1412 connecting the two. Figure 4c The anchor assembly 11 includes a anchor body 111 having two opposite anchor lateral lugs 1111 and a anchor transverse lug 1112 connecting the two.

[0084] See also Figure 4a and Figure 4b The two hinge side tabs 1411 each have an upper through-hole 143 at their upper ends, into which an upper bushing 142 is embedded. The support rod 15 passes through each of the upper through-holes 143 and is rotatably supported relative to the hinge body 141 via the upper bushing 142. The support rod 15 serves as a pivot axis at the upper end of the hinge body 141, with its axis serving as the pivot axis (in this embodiment, the second pivot axis). As will be described below, the seat cushion assembly 8 can pivot relative to the hinge body 141 about the support rod 15.

[0085] An upper torsion spring 144 is also provided between the two upper through holes 143 and passed through by the support rod 15. The upper torsion spring 144 is stopped at an upper stop point on the seat cushion assembly 8 with its upper end 1441. The upper stop point is provided by a hole 811 on the rear cross tube 81 of the seat cushion assembly 8. The upper end 1441 of the upper torsion spring 144 is inserted into and stopped in the hole 811 (see Figure 5 and Figure 7c ), and with its lower end 1442 stops on the lower end stop point on the hinge assembly 14, which is provided by a transverse bead 1413 of a hinge side strip 1411, and the lower end 1442 of the upper torsion spring 144 is abutted and stopped on the bead 1413 from the inside (see Figure 5 and Figure 7c ). Thus, when the seat cushion assembly 8 pivots rearward relative to the hinge assembly 14, the upper torsion spring 144 can apply a reverse force to the seat cushion assembly 8 to cushion the rearward pivoting movement of the seat cushion assembly 8 relative to the hinge assembly 14; on the contrary, when the seat cushion assembly 8 pivots forward relative to the hinge assembly 14, the upper torsion spring 144 can apply a forward force to the seat cushion assembly 8 to assist the forward pivoting movement of the seat cushion assembly 8 relative to the hinge assembly 14.

[0086] See also Figure 4b 、 Figure 4c and Figure 5The two hinge side tabs 1411 each have a lower through-hole 145 at their lower ends, into which a lower bushing 146 is embedded. The two anchor side tabs 1111 each have a rear through-hole 112 at their rear ends. The lower ends of the two hinge side tabs 1411 are positioned inside the two anchor side tabs 1111, so that the two lower through-holes 145 are aligned with the two rear through-holes 112. Hinge bolts 149 pass through the two lower through-holes 145 and the two rear through-holes 112, respectively. Hinge bolts 149 are threadedly connected to projection weld nuts 113 welded to the outside of one of the anchor side tabs 1111, thereby securing them to the two anchor side tabs 1111. The hinge body 141 is rotatably supported on the hinge bolts 149 relative to the anchor body 111 via the lower bushing 146. Here, the hinge bolt 149 is configured as a pivot axis at the lower end of the hinge body 141 for pivoting relative to the anchor body 111 , and its axis is configured as a pivot axis (a first pivot axis in this embodiment).

[0087] A lower torsion spring 147 is also provided between the two lower through holes 145 and is passed through by a hinge bolt 149. The rear end end 1471 of the lower torsion spring 147 is stopped at a rear end stop point on the hinge assembly 14. The rear end stop point is provided by a hinge cross piece 1412 of the hinge body 141. The rear end end 1471 of the lower torsion spring 147 is abutted against and stopped at the front side of the hinge cross piece 1412 (see FIG. Figure 5 and Figure 8d ), and with its front end portion 1472 is stopped at the front end stop point on the anchor assembly 11, the front end stop point is provided by a anchor stop rod 114, the anchor stop rod 114 passes through the two through holes on the anchor side tab 1111 located in front of the two rear end through holes 112 and is riveted to the anchor body 111, the front end portion 1472 of the lower torsion spring 147 is abutted against and stopped on the anchor stop rod 114 from the rear side (see Figure 5 and Figure 8d In the designed position, the lower torsion spring 147 is in a tensioned state. Therefore, when the hinge assembly 14 pivots rearward relative to the anchor assembly 11, the lower torsion spring 147 can apply a positive force to the hinge assembly 14 to assist the backward pivoting motion of the hinge assembly 14 relative to the anchor assembly 11. Conversely, when the hinge assembly 14 pivots forward relative to the anchor assembly 11, the upper torsion spring 144 can apply a negative force to the hinge assembly 14 to cushion the forward pivoting motion of the hinge assembly 14 relative to the anchor assembly 11.

[0088] See also Figure 4a 、 Figure 4b and Figure 5The hinge assembly 14 is provided with a hinge stop rod 148 on the lower side of the torsion spring 144 at its upper end, which passes through and is fixed to the two hinge side strips 1411. The hinge stop rod 148 extends out of the hinge body 141 at the outer side of the hinge body 141 with one end portion and forms a stop portion 1481, which can be abutted against the groove in the rear end corner area of the seat cushion side panel 16, specifically on the stop point a and the stop point b to be described below.

[0089] See also Figure 4c and Figure 5 A slot 116 extending in the x-direction parallel to the carpet surface 3 is provided on one of the horizontal footpieces 1112. The lower end of the connecting rod 17 is slidably hinged to the slot 116. Furthermore, a through hole 115 is provided on the horizontal footpiece 1112 for the bolt 12 to pass through to secure the footpiece body 111 to the seat foot mounting slot 4.

[0090] Figure 6a and Figure 6b The connecting rod 17 with the tooth structure 1711 is shown in a three-dimensional view and a three-dimensional exploded view. The tooth structure 1711 on the tooth plate 171 of the connecting rod 17 and the through hole 1712 for the support rod 15 to pass through and fix are clearly visible here, as well as the projection welding nut 172 and through hole 173 welded to the connecting rod 17 at the lower end to match the step bolt 22, and the two holes 174 on both sides of the through hole 173 for the plastic bushing 24 to pass through (see Figure 8b ).

[0091] Figure 7a and Figure 7b The installation position of the right connecting rod 17 on the seat cushion assembly 8 is shown in a perspective view and an exploded perspective view, respectively, viewed from the outside. It can be seen here that the right connecting rod 17 is fixed to the end of the support rod 15 outside the corresponding seat cushion side panel 16. It is also conceivable that on the other symmetrical side of the seat cushion assembly 8, another connecting rod 17 with or without a toothed structure 1711 is fixed to the other end of the support rod 15 outside the corresponding seat cushion side panel 16. Therefore, the support rod 15 can securely connect the two connecting rods 17 to each other, allowing them to move synchronously. Therefore, even if only one side of the drive assembly 19, i.e., a single-sided gear and rack combination, is provided, both connecting rods 17 can be driven to move via the support rod 15. Providing drive assemblies 19 on both sides, i.e., a double-sided gear and rack combination for bilateral drive, can provide greater driving force.

[0092] Figure 7c Show Figure 7bThe cross-sectional view at AA in FIG. The stops of the upper torsion spring 144 at the upper and lower stop points are clearly visible. The upper torsion spring 144 acts as a buffer during the rearward pivoting movement of the seat cushion assembly 8 relative to the hinge body 141, and acts as a booster during the forward pivoting movement.

[0093] Figure 8a and Figure 8b A sliding joint of a right-hand connecting rod 17 on the anchor assembly 11 is shown in a perspective view from the inside and in an exploded perspective view. Figure 8c by Figure 8a The cross-sectional view at point BB shows the hinged connection. It can be seen that the stepped bolt 22 is positioned in the chute 116 via a bushing 23 and can slide along the chute 116. The stepped bolt 22 also passes through a through-hole 173 in the connecting rod 17 and is threaded into a projection weld nut 172. Furthermore, a plastic bushing 24, also passed through by the stepped bolt 22, is positioned between the connecting rod 17 and the chute 116. The two fixing legs of the plastic bushing 24 are inserted into two holes 174 in the connecting rod 17 to secure the plastic bushing 24 to the connecting rod 17 in a non-rotatable manner. Thus, the connecting rod 17 is slidably hinged in the chute 116 at its lower end via the stepped bolt 22. The plastic bushing 24 and bushing 23 serve as wear protection between the connecting rod 17 and the anchor body 111, and between the stepped bolt 22 and the chute 116, respectively.

[0094] Figure 8d Show Figure 8b The cross-sectional view at CC in FIG. Here, the stops of the lower torsion spring 147 at the front and rear stop points can be clearly seen. The lower torsion spring 147 acts as a booster during the rearward pivoting motion of the hinge assembly 14 and as a buffer during the forward pivoting motion.

[0095] Figure 9a and Figure 9b The seat cushion drive assembly 19 is shown in a three-dimensional view and a three-dimensional exploded view, respectively, and includes a drive motor 191 and a mounting bracket 192 for mounting the drive motor 191 on the seat cushion side panel 16 of the seat cushion assembly 8 . Figure 10 The mounting bracket 192 is shown in perspective view. Figure 11a and Figure 11b The fixed connection of the seat cushion drive assembly 19 to the right seat cushion side panel 16 is shown in a perspective view from the inside and in a perspective exploded view.

[0096] See also Figure 9b The drive motor 191 is fixed to the mounting bracket 192 via mounting screws 193 (three are shown here). Figure 10 and Figure 11bThe mounting bracket 192 is connected to the seat side panel 16 via rivet screws 194 and nuts 195 (three are shown here). The mounting bracket 192 is provided with a hole 195 for the output shaft of the drive motor 191 to pass through and an avoidance hole 196 for the support rod 15 to pass through. Figure 11a and Figure 11b It can also be seen that the seat drive assembly 19 is fixed to the inner side of the right seat cushion side plate 16, and an avoidance hole 161 is provided on the right seat cushion side plate 16 to allow the output shaft and output gear 21 of the drive motor 191 to pass through to the outer side of the seat cushion side plate 16.

[0097] Figure 12a and Figure 12b The meshing of the toothed plate 171 and the output gear 21 is shown in a perspective view and a side view from the outside. As can be seen here, the output gear 21 provided on the output shaft of the drive motor 191 extends out to the outside of the seat side plate 16 and meshes with the toothed plate 171.

[0098] Next, combine Figures 13a to 20e The movement process of the seat cushion assembly 8 of the vehicle seat 1 from its design position to its rearward flip position is described.

[0099] Figure 13a and Figure 13b The seat cushion assembly 8 is shown in a side view and schematic diagram in its design position. Here, the backrest assembly 9 is also in its open position, allowing the vehicle seat 1 to be occupied by an occupant. As can be seen, in the design position of the seat cushion assembly 8, the connecting rod 17 of the connecting rod assembly extends obliquely relative to the carpet surface 3, specifically from the lower front to the upper rear. The toothed plate 171 at the upper end of the connecting rod 17 engages with the gear 21, and its lower end is hinged to the front end of the slide 116. The hinge assembly 14 is tilted rearward from its vertical position. Therefore, under the weight of the seat 1, it has a tendency to pivot rearward. However, the engagement of the toothed plate 171 with the gear 21 and the body lock hook 5 connecting the footrest assembly 10 to the vehicle body 2 provide a mechanical stop to prevent this movement. The stop 1481 of the hinge stop 148 abuts against the stop point a on the seat cushion side panel 16.

[0100] Figure 14a and Figure 14b The side view and the schematic diagram respectively show the seat cushion assembly 8 in the design position, but here the backrest assembly 9 is in its folded state substantially parallel to the seat cushion assembly 8 in preparation for folding the seat cushion assembly 8 backward.

[0101] Figures 15a to 17d The first backward turning motion stage of the seat cushion assembly 8 is shown with different views respectively. When the seat cushion assembly 8 is turned backward, at first the foot assembly 10 needs to be loosened from the vehicle body locking hook 5 on the vehicle body 2.

[0102] See also Figure 15a, starting from the designed position of the seat cushion assembly 8, the drive motor 191 starts to drive the output gear 21 to rotate, and the output gear 21 therefore starts to climb the teeth on the tooth plate 171 to the rear and upwards. Due to the fixed connection between the drive component 19 and the seat cushion assembly 8, the output gear 21 drives the entire seat cushion assembly 8 to start pivoting backward around the support rod 15 relative to the tooth plate 171, and its movement form is shown in arrow B. At the same time, the seat cushion assembly 8 also starts to pivot backward around the support rod 15 relative to the hinge assembly 14, but once the blocking point a of the seat cushion side panel 16 is about to pivot away from the stop portion 1481 of the hinge stop rod 148, the hinge assembly 14, or its hinge body 141, is allowed to apply the backward torque applied to it by the gravity of the seat 1 and the backward torque applied to it by the lower end torsion spring 147 (see Figure 15b ) and even in conjunction with the weight of the hinge assembly 14 itself, the hinge assembly 14 pivots rearwardly about the hinge bolt 149 relative to the anchor assembly 11. This motion is shown by arrow A. Here, motion A consistently counteracts the rearward pivotal movement of the seat cushion assembly 8 relative to the hinge assembly 14, allowing the stop portion 1481 of the hinge stop lever 148 to continue to abut against the stop point a on the seat cushion side panel 16. As the hinge assembly 14 pivots rearward relative to the anchor assembly 11, the connecting rod 17 pivots rearwardly and slides rearwardly in the slide slot 116.

[0103] Continue to see Figure 16a and Figure 16b A process position of the first backward turning movement stage shown in FIG. Figure 16a It can be seen that the output gear 21 has climbed a certain distance on the tooth plate 171, and the connecting rod 17 has tilted further backward and slid a certain distance in the sliding groove 116. Figure 16b It can be seen that the blocking portion 1481 of the hinge blocking rod 148 still remains against the blocking point a of the seat cushion side panel 16 due to the existence of the movement form A.

[0104] Continue to see Figures 17a to 17d The final position of the first backflip phase is shown. In this position, see Figure 17a and Figure 17b , the output gear 21 has climbed a greater distance on the tooth plate 171, the connecting rod 17 has pivoted further rearward to a substantially horizontal orientation and is pulled rearwardly to slide to the rear end in the slide groove 116. The seat cushion assembly 8 has pivoted to a substantially vertical orientation. Figure 17c and Figure 17d The stopper 1481 of the hinge stopper 148 still abuts against the stop point a of the seat cushion side panel 16 due to the existence of movement form A, but the hinge body 141 of the hinge assembly 14 has pivoted to abut against the hinge stop point 117 and stops further pivoting. The hinge stop point 117 can be set on the footrest body 111 or at other locations on the floor.

[0105] Therefore, during the entire first rearward flipping movement stage: two forms of movement, namely, the output gear 21 drives the seat cushion assembly 8 to pivot backward around the support rod 15 relative to the tooth plate 171, or B1, and the hinge assembly 14 pivots backward around the hinge bolt 149 relative to the anchor assembly 11, and perform simultaneously; but the movement form A always offsets the backward pivoting movement of the seat cushion assembly 8 relative to the hinge assembly 14, thereby ensuring that the stop portion 1481 of the hinge stop rod 148 always remains against the stop point a of the seat cushion side panel 16; since the movement form A always offsets the backward pivoting movement of the seat cushion assembly 8 relative to the hinge assembly 14, the seat cushion assembly 8 and the hinge assembly 14 do not pivot relative to each other, or the angle between the seat cushion assembly 8 and the hinge assembly 14 always remains unchanged, or the two are equivalent to being rigidly connected; that is, the seat cushion assembly 8 and the hinge assembly 14 pivot backward together around the hinge bolt 149 or its pivot axis relative to the anchor assembly 11.

[0106] Here, because the rearward pivotal motion B, or B1, of the seat cushion assembly 8 about the support rod 15 relative to the toothed plate 171 driven by the output gear 21 requires the seat cushion drive assembly 19 to provide a greater driving torque to overcome the weight of the seat 1, lowering the center of gravity of the seat 1 during the first rearward tilting phase through the rearward pivotal motion A of the hinge body 141 relative to the anchor assembly 11 is highly advantageous. This significantly reduces the driving torque required from the seat cushion drive assembly 19, allowing a conventional motor to meet the required drive power, saving motor costs. In other words, during this process, the weight of the seat cushion assembly 8 and hinge assembly 14, coupled with the assistance of the lower torsion spring 147, reduces the load requirements on the motor. The rearward pivotal motion A of the hinge body 141 relative to the anchor assembly 11 is achieved solely by the torque provided by its own weight, the weight of the seat 1, and the preload of the lower torsion spring 147. If the motor and gear-and-tooth plate structure are eliminated, after the seat cushion assembly 8 is unlocked, the seat cushion assembly 8 and hinge assembly 14 may still pivot under the action of gravity and the lower torsion spring 147. However, this is unstable and uncontrollable. The motor and gear-and-tooth plate structure can increase their mobility and controllability. If the elastic member, in this case the lower torsion spring 147, is eliminated and the motor and gear-and-tooth plate structure is used alone, the load requirements on the motor are very high and the cost is high. Therefore, the motor and gear-and-tooth plate structure is used in combination with the elastic member, and the elastic member can help reduce the load requirements on the motor.

[0107] Figures 18a to 20e A second rearward folding movement phase of the seat cushion assembly 8 is shown in different views, immediately following the first rearward folding movement phase.

[0108] See also Figure 18aStarting from the position of the seat cushion assembly 8 when the hinge assembly 14 is stopped by the hinge stop point 117, the seat cushion drive motor 191 continues to drive the output gear 21 to rotate, and the output gear 21 thus continues to climb the teeth on the tooth plate 171. The output gear 21 drives the seat cushion assembly 8 to continue to pivot backward around the support rod 15 relative to the tooth plate 171. The movement is shown in arrow B or B2. Figure 18b Because the hinge assembly 14 is stopped by the hinge stop 117 and no longer pivots with the hinge bolt 149, the aforementioned motion pattern A no longer exists. Therefore, the seat cushion assembly 8 begins to pivot rearward about the support rod 15 relative to the hinge assembly 14. At this point, the upper end 1441 of the upper torsion spring 144 begins to be pressed rearward by the rear cross tube 81, while the lower end 1442 of the upper torsion spring 144 is stopped by the curled edge 1413 of the stationary hinge body 141. Thus, the upper torsion spring 144 begins to cushion the rearward pivotal movement of the seat cushion assembly 8. Due to the stoppage of the hinge assembly 14, the connecting rod 17 also remains stationary.

[0109] Continue to see Figure 19a and Figure 19b A process position of the second backward turning movement stage shown in FIG. Figure 19a It can be seen that the output gear 21 has climbed further on the tooth plate 171, while the connecting rod 17 remains stationary. Figure 19b It can be seen that the blocking portion 1481 of the hinge stop rod 148 is disengaged from the stop point a of the seat cushion side panel 16 because the movement form A no longer exists, but the stop point b behind the stop point a on the seat cushion side panel 16 is approaching the blocking portion 1481 of the hinge stop rod 148.

[0110] Continue to see Figures 20a to 20e The final position of the second rearward flipping movement stage of the seat cushion assembly 8 is shown, which is also the final position of the entire rearward flipping movement of the seat cushion assembly 8. In this final position, see Figure 20a and Figure 20b The output gear 21 has climbed the maximum distance on the tooth plate 171. The hinge body 14 and the connecting rod 17 remain stationary. The seat cushion assembly 8 has been completely flipped back into the seat receiving groove 6. The bottom surface 7 of the seat cushion assembly 8 has now turned to the upper side and is flush with the carpet surface 3. Figure 20c , the stop point b of the seat cushion side panel 16 has moved to abut against the stop portion 1481 of the hinge stop lever 148, thereby preventing the seat cushion assembly 8 from continuing to pivot backward. Figure 20d and Figure 20eThe upper torsion spring 144 has been tensioned to its maximum extent based on the rearward pivoting movement of the seat cushion assembly 8 relative to the hinge assembly 14. It can be understood that during the forward tilting movement phase corresponding to the second rearward tilting movement phase, in which the seat cushion assembly 8 is tilted forward from its rearward tilted position toward the designed position, the upper torsion spring 144, due to its tension, plays an assisting role.

[0111] Therefore, during the entire second backward flipping movement stage: only one movement form B or B2 is performed, that is, the output gear 21 drives the seat cushion assembly 8 to pivot backward around the support rod 15 relative to the gear plate 171, and there is no movement form A, that is, there is no backward pivoting movement of the hinge body 141 relative to the anchor assembly 11; the seat cushion assembly 8 pivots around the support rod 15 relative to the hinge assembly 14, so the stop portion 1481 of the hinge stop rod 148 moves away from the blocking point of the seat cushion side panel 16 a and moves toward and to the stop point b that abuts against the seat cushion side panel 16; the hinge body 141 and the connecting rod 17 remain stationary; during the entire second rearward flipping movement stage, the upper end portion 1441 of the upper end torsion spring 144 is increasingly squeezed rearward by the rear cross tube 81, while the lower end portion 1442 of the upper end torsion spring 144 is always stopped by the rolled edge 1413 of the stationary hinge body 141, so that the upper end torsion spring 144 cushions the rearward pivoting movement of the seat cushion assembly 8 and is increasingly tensioned.

[0112] Figures 21a to 21c An alternative to the upper torsion spring 144 and the lower torsion spring 147 is shown, namely a dual coil spring solution. If the seat drive assembly 19 is only provided on the right side and not on the left side, the dual coil spring solution can be particularly useful on the left side of the seat assembly 8 where more space is available, to provide motion assistance and cushioning components in addition to or in place of the upper torsion spring 144 and the lower torsion spring 147.

[0113] The double coil spring includes two coil springs, namely a left coil spring 25 and a right coil spring 26, which are arranged side by side between the left seat cushion side panel 16 and the left hinge assembly 14. Figure 21b and Figure 21c A weld nut 27 is inserted and welded to the hollow support rod 15. The mounting bolt 28 of the left connecting rod 17 successively passes through the left connecting rod 17, the left seat cushion side plate 16, the axial stopper 29, the left coil spring 25, and the right coil spring 26, and is then fixedly connected to the weld nut 27 with its threaded head 281. The mounting hole 175 of the left connecting rod 17 and the section of the mounting bolt 28 that cooperates with the mounting hole 175 can be configured to match each other with different shapes, so that the left connecting rod 17 and the mounting bolt 28 are connected in a positive locking manner to prevent relative rotation between them.

[0114] The left coil spring 25 is secured at its inner end to the mounting bolt 28 and at its outer end 251, which serves as an external attachment point, to an upper left coil spring mounting pin 165. The left coil spring mounting pin 165 is secured to the inner side of the left seat cushion side panel 16. The left coil spring 25 can be designed to store energy and act as a motion buffer during the rearward tilting of the seat cushion assembly 8, particularly during the second movement phase, and to release energy and act as a motion assist during the return movement.

[0115] The right coil spring 26 is secured at its inner end to the mounting bolt 28, and at its outer end 261, which serves as an external attachment point, to the right coil spring mounting pin 166. The right coil spring mounting pin 166 is secured to the inner side of the left seat cushion side panel 16, just in front of and below the left coil spring mounting pin 165. In the designed position of the seat cushion assembly 8, the right coil spring 26 can be designed to be in a tensioned state. Therefore, during the rearward tilting process of the seat cushion assembly 8, especially in the first phase of movement, the right coil spring 26 releases energy and simultaneously acts as a motion assist. During the return process, however, the right coil spring 26 stores energy and acts as a motion buffer.

[0116] Here, in addition to the embodiments of torsion springs 144, 147 and coil springs 25, 26 described above, other elastic parts, such as other springs, such as leaf springs, etc., can also be considered as long as movement assistance in the first movement phase and movement damping in the second movement phase can be achieved.

[0117] Figure 22 A modified embodiment is shown. Instead of the motor-gear-plate drive mechanism of the previous embodiment, a motor-recliner drive mechanism is used. Specifically, a recliner 50, known per se, is provided at each of the two hinged joints between the seat cushion side panel 16 and the support rod 15. The recliner 50 comprises two discs that can rotate relative to each other. One disc is fixed to the seat cushion side panel 16, and the other to the support rod 15. A seat cushion drive assembly 19 with a drive motor 191 is secured to the outside of the seat cushion side panel 16 via mounting screws 60. By driving the two discs relative to each other via the drive motor 191, the seat cushion side panel 16 (and therefore the entire seat cushion assembly 8) can be pivoted about the axis of the support rod 15. For lightweight seats, the seat cushion drive assembly 19 can be provided on only one side. For heavier seats, however, both sides can be provided to provide sufficient driving torque. The torque-boosting function of the recliner 50 is also utilized to facilitate rearward tilting of the seat cushion assembly 8.

[0118] The left and right recliners 50 are connected to each other by a synchronization rod 70 to achieve motion synchronization, and the synchronization rod 70 passes through the support rod 15, which is configured as a hollow tube. In the case where the recliner 50 is an eccentric recliner 50, the synchronization rod 70 is necessary, while in the case of a concentric recliner 50, it can be omitted.

[0119] Here, the two connecting rods 17 are still respectively fixedly connected to the support rod 15 at their upper ends and slidably connected to the sliding groove 116 on the anchor assembly 11 at their lower ends. The two connecting rods 17 are arranged on the inner side of the hinge assembly 14.

[0120] Finally, it should be pointed out that the above embodiments are only used to understand and explain the present invention and do not limit the scope of protection of the present invention. For those skilled in the art, modifications or recombinations can be made based on the above embodiments without departing from the scope of protection of the present invention.

Claims

1. A vehicle seat with a rear-folding function, characterized in that: The vehicle seat comprises a seat cushion assembly and a rearward tilting drive assembly capable of driving the seat cushion assembly to pivot between a design position and a rearward tilting position. The rearward flipping movement process of the seat cushion assembly from the design position to the rearward flipping position includes a first rearward flipping movement stage and a second rearward flipping movement stage after the first rearward flipping movement stage. During the first rearward flipping movement phase of the seat cushion assembly, the seat cushion assembly pivots rearward about a first pivot axis, and during the second rearward flipping movement phase of the seat cushion assembly, the seat cushion assembly pivots rearward about a second pivot axis, and the first pivot axis and the second pivot axis do not coincide with each other.

2. The vehicle seat according to claim 1, wherein In the design position of the seat cushion assembly, the first pivot axis is located below the second pivot axis, and during the first rearward tilting movement phase of the seat cushion assembly, the second pivot axis moves rearward and downward.

3. The vehicle seat according to claim 1, wherein The rear flip drive assembly includes at least one hinge assembly, which has a hinge body, wherein the hinge body is pivotally connected to a foot assembly fixed to the vehicle body through a pivot shaft at its lower end, and is pivotally connected to a seat cushion assembly through a pivot shaft at its upper end, wherein the first pivot axis is provided by the pivot shaft at the lower end, and the second pivot axis is provided by the pivot shaft at the upper end.

4. The vehicle seat according to claim 3, characterized in that During the first rearward-tilting movement stage of the seat cushion assembly, the seat cushion assembly and the hinge assembly pivotally move backward together about the first pivot axis relative to the ground anchor assembly, and the seat cushion assembly and the hinge assembly do not pivotally move relative to each other; and during the second rearward-tilting movement stage of the seat cushion assembly, the seat cushion assembly pivotally moves backward about the second pivot axis relative to the hinge assembly, and the hinge assembly and the ground anchor assembly do not pivotally move relative to each other.

5. The vehicle seat according to claim 3, characterized in that The rear flip drive assembly includes two opposing connecting rods, and the anchor assembly has a slide groove, wherein each connecting rod is slidably hinged to the corresponding slide groove at the lower end and is connected to the pivot shaft at the upper end of the hinge body at the upper end.

6. The vehicle seat according to claim 5, characterized in that The rear-flip drive assembly includes a seat cushion drive assembly configured for at least one of the two connecting rods, the seat cushion drive assembly having a motor and an output gear driven by the motor, the at least one connecting rod having a tooth plate at the upper end, the tooth plate and the output gear being in a tooth meshing state, wherein the seat cushion drive assembly is fixed to the seat cushion assembly, and can drive the seat cushion assembly to pivot around the second pivot axis by driving the output gear to perform a climbing motion on the tooth plate.

7. The vehicle seat according to claim 3, characterized in that In the design position of the seat cushion assembly, the hinge assembly is positioned tilted rearward and deviated from the vertical direction.

8. The vehicle seat according to claim 4, characterized in that A first elastic member is provided, which can cushion the rearward pivoting movement of the seat cushion assembly relative to the hinge assembly during the second rearward flipping movement stage of the seat cushion assembly; and / or a second elastic member is provided, which can assist the rearward pivoting movement of the hinge assembly relative to the anchor assembly during the first rearward flipping movement stage of the seat cushion assembly.

9. The vehicle seat according to claim 8, characterized in that At least one hinge assembly has an upper torsion spring configured as the first elastic member, which has its upper end stopped at an upper stop point on the seat cushion assembly and its lower end stopped at a lower stop point on the hinge assembly, wherein, during the second rearward flipping movement phase of the seat cushion assembly, the upper torsion spring is capable of cushioning the rearward pivoting movement of the seat cushion assembly relative to the hinge assembly.

10. A vehicle, characterized in that The vehicle comprises a vehicle seat according to any one of claims 1 to 9 , wherein a seat receiving recess is provided in the body of the vehicle, in which the vehicle seat is received in the rearwardly folded position of the seat cushion assembly.

Images