Vehicle seat

Abstract

The present invention relates to a vehicle seat comprising: a seat cushion; a seat back; and a seat drive system configured to move the seat cushion and the seat back to enable the vehicle seat to enter a further position from a design position, the seat drive system comprising a back drive system for the seat back and a cushion drive system for the seat cushion, the backrest drive system and the seat cushion drive system are configured to drive independently of each other, the backrest drive system comprising a backrest transmission mechanism comprising a constrained end and a movable end, the seat cushion being pivotally supported at its front end by a front support about its pivot with the front support, under the driving of the seat cushion driving system, the seat cushion can pivot forwards around the pivoting part of the seat cushion and the front supporting piece to cross the vertical position of the seat cushion to the position where the B face of the seat cushion is basically horizontally upward, and the front supporting piece is installed on a sliding rail or a vehicle floor.

Description

Technical Field

[0001] The present invention relates to a vehicle seat. Background Art

[0002] Vehicle seats for motor vehicles typically include a seat cushion and a seat back. Designing vehicle seats for motor vehicles to be convertible between different positions to provide a more comfortable riding experience for the occupants is known in the art. For example, some vehicle seats are designed to be convertible between a design position and a "folded" position or a "reclining" position.

[0003] In order to improve the functionality of vehicle seats, there is still a demand for improvements in which the vehicle seats can be converted from a design position to more functional positions using the same drive system. Summary of the Invention

[0004] The object of the present invention is to provide a vehicle seat that can solve at least one of the above-mentioned problems.

[0005] In order to achieve the above object, the present invention provides a vehicle seat, comprising:

[0006] seat cushions;

[0007] seat backs; and

[0008] a seat drive system configured to move the seat cushion and the seat back to enable the vehicle seat to be moved from a design position to another position, in which the seat cushion and the seat back each have a side A facing toward an occupant and a side B facing away from the occupant,

[0009] The seat drive system includes a seat back drive system for the seat back and a seat cushion drive system for the seat cushion, wherein the seat back drive system and the seat cushion drive system are configured to be driven independently of each other.

[0010] The backrest drive system includes a backrest transmission mechanism, the backrest transmission mechanism includes a restraining end and a movable end, the backrest transmission mechanism is configured to be pivotable around a pivot portion provided at the restraining end, and the seat back is pivotally connected to the movable end of the backrest transmission mechanism so that the seat back can pivot relative to the backrest transmission mechanism around the pivot portion provided at the movable end.

[0011] Wherein, the seat cushion is pivotally supported at its front end by a front support member around a pivot portion between the seat cushion and the front support member, wherein, driven by the seat cushion drive system, the seat cushion can pivot forward around the pivot portion between the seat cushion and the front support member beyond the vertical position of the seat cushion to a position where the B surface of the seat cushion is basically horizontal and facing upward, wherein the front support member is mounted on a slide rail or a vehicle floor.

[0012] Here, since the seat cushion can be flipped forward at a large angle through the seat cushion drive system, and combined with the special design of the backrest drive system, the vehicle seat can reach more functional positions, providing the functionality and luxury of the seat.

[0013] Advantageously, by being driven by the seat drive system, the vehicle seat can enter a "large trunk" position from a design position, in which the seat cushion has entered a position in which its B side is basically horizontally facing upward after passing its vertical position by being driven by the seat cushion drive system, and the seat back has entered a position in which its B side is basically horizontally facing upward by being driven by the backrest drive system, and the B side of the seat cushion and the B side of the seat back are basically on the same horizontal plane to form a accommodating space above.

[0014] The term "surface B is substantially horizontally facing upward" can be understood as surface B being oriented exactly horizontally or slightly deviating from the horizontal plane within a small angle range.

[0015] Advantageously, by being driven by the seat drive system, the vehicle seat can enter a "bed" position from a design position, in which the seat cushion has been driven by the seat cushion drive system to lift the rear end of the seat cushion upward to a position in which its A side is basically horizontally facing upward, and the seat back has been driven by the backrest drive system to flip backward to a position in which its A side is basically horizontally facing upward, and the A side of the seat cushion and the A side of the seat back are basically on the same horizontal plane, so that the occupant can lie down on the vehicle seat.

[0016] Advantageously, by being driven by the seat drive system, the vehicle seat can enter a "small table" position from the design position, in which the seat back has been driven by the backrest drive system to a position in which its B side is horizontally facing upward and above the seat cushion (for example, the B side is flat and in the highest position in the Z direction).

[0017] Advantageously, the vehicle seat can be driven from the design position into a "folded backrest" position by the seat drive system, in which the seat backrest has been driven by the backrest drive system into a position substantially parallel to the seat cushion and with their A surfaces resting against each other.

[0018] Advantageously, the vehicle seat can be driven from the design position to a "lying" position by the seat drive system, in which the seat backrest has been driven by the backrest drive system to a position where its A surface forms an obtuse angle with the A surface of the seat cushion.

[0019] Advantageously, by being driven by the seat drive system, the vehicle seat can enter a "fishing" position from a design position, in which the seat back has been driven by the back drive system to move forward to its lower end over the front end of the seat cushion, so that the B side of the seat back constitutes the back rest surface for the occupant, and the seat cushion has been driven by the cushion drive system so that the rear end of the seat cushion is lifted upward.

[0020] Advantageously, the seat cushion drive system includes a seat cushion transmission mechanism, which includes a first link and a second link hinged to each other, the first link being hinged to the front support or other support mounted on a slide rail or a vehicle floor different from the front support through a hinge at its constrained end, the first link being pivotally hinged to the first movable end of the second link through a hinge at its movable end, and the second movable end of the second link being pivotally hinged to the seat cushion.

[0021] Advantageously, the second movable end of the second link is pivotally articulated in the region of the middle third of the length of the seat cushion.

[0022] Advantageously,

[0023] In the design position, the hinged connection between the first link and the second link is located behind the hinged connection between the second movable end of the second link and the seat cushion; and / or

[0024] In the design position, the first link and the second link form an acute angle; and / or

[0025] the first link and the second link forming an obtuse angle in the upright position of the seat cushion; and / or

[0026] A distance between a hinge portion at the restraining end of the first link and a hinge portion at the movable end thereof is greater than a distance between a hinge portion between the seat cushion and the front support and a hinge portion between the seat cushion and the second link.

[0027] Advantageously, the seat cushion driving system includes a seat cushion driver, which is configured to drive one of the first link and the second link, and the one link drives the other of the first link and the second link.

[0028] Advantageously,

[0029] The seat cushion driver is constituted by a combination of a recliner and a motor assembly, wherein the recliner is provided at a hinge portion at a restraining end of the first link or at a hinge portion between the second link and the seat cushion, and the motor assembly drives the first link or the second link to pivot by driving the recliner; or

[0030] The seat drive is constituted by a combination of a gear plate and a motor assembly, wherein the gear plate is formed at the restraining end of the first link or at the second movable end of the second link, and the motor assembly is engaged with the gear plate through its output gear to drive the first link or the second link to pivot; or

[0031] The seat cushion drive is configured as a push rod motor assembly, which is hingedly connected with its motor side to the front support or other support installed on the slide rail or vehicle floor different from the front support, and is hingedly connected with its push rod side to the first link or the second link or the hinge portion of the first link and the second link. The first link and / or the second link is driven to pivot by the extension and retraction of the push rod of the push rod motor assembly.

[0032] Advantageously, the seat cushion drive system includes a seat cushion transmission mechanism, which includes a connecting rod and a slide groove slidably hinged to the connecting rod, the slide groove is opened on the seat cushion, the connecting rod is slidably hinged in the slide groove through its movable end, and the connecting rod is pivotally hinged to the front support or other support members installed on the slide rail or the vehicle floor different from the front support through the hinge part at its constraint end.

[0033] Advantageously, the guide groove is at least largely formed in the region of the front half of the length of the seat cushion.

[0034] Advantageously,

[0035] In the design position, the movable end of the connecting rod is spaced apart from both the front and rear ends of the chute; and / or

[0036] In the design position, the movable end of the connecting rod is hinged in the region of the second half of the length of the chute; and / or

[0037] In the design position, the first connecting rod and the sliding groove form an acute angle; and / or

[0038] In the upright position of the seat cushion, the movable end of the link is spaced apart from the front end of the slide channel.

[0039] Advantageously, the seat drive system comprises a seat drive, and the seat drive is used to drive the connecting rod.

[0040] Advantageously,

[0041] The seat drive is constituted by a combination of a recliner and a motor assembly, wherein the recliner is provided at a hinge portion at a restraining end of the connecting rod, and the motor assembly drives the connecting rod to pivot by driving the recliner; or

[0042] The seat drive is constituted by a combination of a toothed plate and a motor assembly, wherein the toothed plate is formed at the restraining end of the connecting rod, and the motor assembly is engaged with the toothed plate through its output gear to drive the connecting rod to pivot; or

[0043] The seat cushion drive is configured as a push rod motor assembly, wherein one of the motor side and the push rod side of the push rod motor assembly is hingedly connected to the front support member or other support member installed on the slide rail or the vehicle floor different from the front support member, and the other of the motor side and the push rod side is hingedly connected to the connecting rod. The connecting rod is driven to pivot by the extension and retraction of the push rod of the push rod motor assembly, thereby driving the movable end of the connecting rod to slide in the slide groove to drive the seat cushion to rotate.

[0044] Advantageously, the seat cushion drive system includes a gear plate and a motor assembly with an output gear, the gear plate being formed on one of the front support and the seat cushion, the motor assembly being fixed on the other of the front support and the seat cushion, the output gear of the motor assembly being meshed with the gear plate, wherein the output gear drives the seat cushion to pivot around the front support when rotating.

[0045] Advantageously, the front support member is pivotally mounted on a slide rail or a vehicle floor, and the seat cushion drive system further comprises a push rod motor assembly, wherein one of the motor side and the push rod side of the push rod motor assembly is hingedly connected to other supports mounted on the slide rail or the vehicle floor that are different from the front support member, while the other of the motor side and the push rod side is hingedly connected to the front support member, and the front support member can be driven to swing by the extension and retraction of the push rod of the push rod motor assembly to allow the position of the front end of the seat cushion to be adjusted in the X direction and the Z direction.

[0046] Advantageously, the seat drive system comprises a first toothed plate rotatably connected to the front support member and a second toothed plate in toothed engagement with the first toothed plate, wherein the first toothed plate is non-rotatably connected to the seat cushion, and the second toothed plate is swingably mounted at its restraining end to the front support member or other support member mounted on a slide rail or a vehicle floor different from the front support member and is in toothed engagement with the first toothed plate at its movable end.

[0047] The seat cushion drive system also includes a push rod motor assembly, which is hingedly connected to the front support member or other support member installed on the slide rail or vehicle floor different from the front support member with one of its motor side and push rod side, and is hingedly connected to the second gear plate with the other of its motor side and push rod side. The second gear plate can be driven to swing by the extension and retraction of the push rod of the push rod motor assembly, and the first gear plate can be driven to pivot together with the seat cushion through the swinging of the second gear plate.

[0048] Advantageously, the backrest transmission mechanism is constructed as a single-link transmission mechanism on each of the left and right sides of the vehicle seat, and the single-link transmission mechanism includes only a single link, and the link includes a restraining end and a movable end, and the restraining end of the link is pivotally mounted on the front support or other support members installed on the slide rail or the vehicle floor different from the front support, and the seat back is pivotally connected to the movable end of the link of the backrest transmission mechanism.

[0049] Advantageously, the backrest drive system also includes a first backrest drive and a second backrest drive, wherein the first backrest drive drives the connecting rod of the single-link transmission mechanism to pivot around the pivot portion at the constraint end, and the second backrest drive drives the seat back to pivot around the pivot portion at the movable end relative to the connecting rod of the single-link transmission mechanism.

[0050] Advantageously, the backrest transmission mechanism is constructed as a four-bar transmission mechanism on each of the left and right sides of the vehicle seat, and the four-bar transmission mechanism includes a first link, a second link and a third link, wherein the first link includes a constraint end and a movable end, the second link includes a constraint end and a movable end, and the third link includes a first foot, a second foot and a third foot, wherein the constraint end of the first link and the constraint end of the second link are pivotally mounted on the vehicle floor or on a slide rail, the movable end of the first link and the movable end of the second link are pivotally connected to the first foot and the second foot of the third transmission respectively, and wherein the seat back is pivotally connected to the third foot of the third link.

[0051] Advantageously, the backrest drive system further comprises a first backrest drive and a second backrest drive, wherein the first backrest drive drives at least one of the first link and the second link so that the first link and the second link pivot around the pivot portions at their respective constraint ends, and the second backrest drive drives the seat back to pivot around the pivot portion at the third foot of the third link.

[0052] Advantageously, the vehicle seat is the rearmost seat in the vehicle. However, the vehicle seat can also be configured as a front passenger seat or a middle seat, so that they can at least reach the partial functional positions described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] 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:

[0054] Figure 1a and Figure 1b The use scenario of the vehicle seat of the present invention, called "large luggage box", is schematically shown in a perspective view and a side view respectively.

[0055] Figure 2a and Figure 2b The vehicle seat of the present invention is schematically shown in a three-dimensional view and a side view in a usage scenario called "bed".

[0056] Figure 3a and Figure 3b The use scenario of the vehicle seat called "small table" of the present invention is schematically shown in a three-dimensional view and a side view respectively.

[0057] Figure 4 A side view schematically illustrates a usage scenario called "fishing" of the vehicle seat of the present invention.

[0058] Figure 5a and 5b The inner frame and seat cushion driving system of the vehicle seat of the first embodiment of the present invention are schematically shown in a perspective view and an exploded view respectively.

[0059] Figure 6a and 6b a schematic diagram and a schematic principle diagram respectively showing a vehicle seat of a first embodiment in a design position,

[0060] Figure 7 The schematic diagram shows an alternative embodiment of the backrest transmission mechanism combined with the seat transmission mechanism of the first embodiment.

[0061] Figure 8 shows the state of the seat cushion transmission mechanism when the seat cushion of the vehicle seat of the first embodiment is pivoted forward to a vertical position,

[0062] Figure 9a a schematic diagram showing the vehicle seat of the first embodiment in the "large trunk" position,

[0063] Figure 9b a schematic diagram showing the seat frame of the vehicle seat of the first embodiment in the "large luggage compartment" position,

[0064] Figure 9c a schematic principle diagram showing a vehicle seat of a first embodiment in the "large luggage compartment" position,

[0065] Figure 10a a schematic diagram showing the vehicle seat of the first embodiment in the "bed" position,

[0066] Figure 10b a schematic diagram showing the seat frame of the vehicle seat of the first embodiment in the "bed" position,

[0067] Figure 10c A schematic diagram showing a vehicle seat of a first embodiment in a "bed" position,

[0068] Figure 11a a schematic diagram showing the vehicle seat of the first embodiment in the "tray" position,

[0069] Figure 11b a schematic principle diagram showing a vehicle seat of a first embodiment in the "tray" position,

[0070] Figure 12a a schematic diagram showing a vehicle seat of a first embodiment in the “backrest folded” position,

[0071] Figure 12b A schematic principle diagram shows a vehicle seat 1 of a first embodiment in the “backrest folded” position,

[0072] Figure 13a a schematic diagram showing the vehicle seat of the first embodiment in the "large recline" position,

[0073] Figure 13b A schematic principle diagram showing a vehicle seat of a first embodiment in a "large reclining" position,

[0074] Figure 14a A schematic diagram showing the vehicle seat of the first embodiment in the "fishing" position,

[0075] Figure 14b A schematic principle diagram showing a vehicle seat of a first embodiment in a "fishing" position,

[0076] Figure 15a and 15b The inner frame and seat cushion drive system of a vehicle seat according to a second embodiment of the present invention are schematically shown in a perspective view and an exploded view, respectively.

[0077] Figure 16a and 16b a schematic diagram and a schematic principle diagram respectively showing a vehicle seat of a second embodiment in a design position,

[0078] Figure 17 The schematic diagram shows an alternative embodiment of the backrest transmission mechanism combined with the seat transmission mechanism of the second embodiment.

[0079] Figure 18 2 shows the state of the seat cushion transmission mechanism when the seat cushion of the vehicle seat of the second embodiment is pivoted forward to a vertical position.

[0080] Figure 19a a schematic diagram showing a vehicle seat of a second embodiment in a "large trunk" position,

[0081] Figure 19b a schematic principle diagram showing a vehicle seat of a second embodiment in the "large luggage compartment" position,

[0082] Figure 20a a schematic diagram showing a vehicle seat of a second embodiment in a "bed" position,

[0083] Figure 20b A schematic diagram showing a vehicle seat of a second embodiment in the "bed" position,

[0084] Figure 21a a schematic diagram showing a vehicle seat of a second embodiment in the "tray" position,

[0085] Figure 21b a schematic diagram showing a second embodiment of a vehicle seat in the "tray" position,

[0086] Figure 22a a schematic diagram showing a vehicle seat of a second embodiment in the “backrest folded” position,

[0087] Figure 22b a schematic principle diagram showing a vehicle seat of a second embodiment in the “backrest folded” position,

[0088] Figure 23a a schematic diagram showing a vehicle seat of a second embodiment in a "large recline" position,

[0089] Figure 23bA schematic principle diagram of a vehicle seat of a second embodiment is shown in the "large reclining" position,

[0090] Figure 24a A schematic diagram showing a vehicle seat of a second embodiment in a "fishing" position,

[0091] Figure 24b A schematic principle diagram showing a vehicle seat of a second embodiment in a "fishing" position,

[0092] Figure 25a and 25b The inner frame and seat cushion drive system of a vehicle seat according to a third embodiment of the present invention are schematically shown in a perspective view and an exploded view, respectively.

[0093] Figure 26 The seat drive system is shown as a combination of a double gear plate and a push rod motor assembly.

[0094] Figure 27a and 27b a schematic diagram and a schematic principle diagram respectively showing a vehicle seat of a third embodiment in a design position,

[0095] Figure 28 The schematic diagram shows an alternative embodiment of the backrest transmission mechanism combined with the seat transmission mechanism of the third embodiment.

[0096] Figure 29a a schematic diagram showing a vehicle seat of a third embodiment in a "large trunk" position,

[0097] Figure 29b a schematic principle diagram showing a vehicle seat of a third embodiment in the "large luggage compartment" position,

[0098] Figure 30a a schematic diagram showing a vehicle seat of a third embodiment in a "bed" position,

[0099] Figure 30b A schematic diagram showing a vehicle seat of a third embodiment in the "bed" position,

[0100] Figure 31a a schematic diagram showing a vehicle seat of a third embodiment in the "tray" position,

[0101] Figure 31b a schematic principle diagram showing a vehicle seat of a third embodiment in the "tray" position,

[0102] Figure 32a a schematic diagram showing a vehicle seat of a third embodiment in the “backrest folded” position,

[0103] Figure 32b A schematic principle diagram shows a vehicle seat 1 of a third embodiment in the “backrest folded” position,

[0104] Figure 33a A schematic diagram showing a vehicle seat of a third embodiment in a "large recline" position,

[0105] Figure 33b A schematic diagram showing a vehicle seat of a third embodiment in a "large reclining" position,

[0106] Figure 34a A schematic diagram showing a vehicle seat of a third embodiment in a "fishing" position,

[0107] Figure 34b A schematic principle diagram showing a vehicle seat of a third embodiment in the "fishing" position,

[0108] Figure 35a and 35b The inner frame and seat cushion drive system of a vehicle seat according to a fourth embodiment of the present invention are schematically shown in a perspective view and an exploded view, respectively.

[0109] Figure 36a and 36b a schematic diagram and a schematic principle diagram respectively showing a vehicle seat of a fourth embodiment in a design position,

[0110] Figure 37 The schematic diagram shows an alternative embodiment of the backrest transmission mechanism combined with the seat transmission mechanism of the fourth embodiment.

[0111] Figure 38a a schematic diagram showing a vehicle seat of a fourth embodiment in a "large trunk" position,

[0112] Figure 38b a schematic principle diagram showing a vehicle seat of a fourth embodiment in the "large luggage compartment" position,

[0113] Figure 39a A schematic diagram showing a vehicle seat of a fourth embodiment in a "bed" position,

[0114] Figure 39b a schematic principle diagram showing a vehicle seat of a fourth embodiment in the "bed" position,

[0115] Figure 40a a schematic diagram showing a vehicle seat of a fourth embodiment in the "tray" position,

[0116] Figure 40ba schematic diagram showing a fourth embodiment of a vehicle seat in the "tray" position,

[0117] Figure 41a a schematic diagram showing a vehicle seat of a fourth embodiment in the “backrest folded” position,

[0118] Figure 41b a schematic principle diagram showing a vehicle seat of a fourth embodiment in the “backrest folded” position,

[0119] Figure 42a a schematic diagram showing a vehicle seat of a fourth embodiment in a "large recline" position,

[0120] Figure 42b A schematic diagram showing a fourth embodiment of a vehicle seat in a "large reclining" position,

[0121] Figure 43a a schematic diagram showing a vehicle seat of a fourth embodiment in a "fishing" position, and

[0122] Figure 43b A schematic principle diagram of a vehicle seat of a fourth embodiment is shown in the "fishing" position. DETAILED DESCRIPTION

[0123] 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.

[0124] 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.

[0125] 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".

[0126] The present invention relates to a vehicle seat for a vehicle, in particular to the (last) row of seats in the vehicle, i.e., the second row (in the case of two rows of seats) or the third row of seats (in the case of three rows of seats), which can be moved between at least two or more positions to realize different usage scenarios and enhance comfort and functionality.

[0127] The vehicle seat 1 may include a seat cushion 2 and a seat back 3, the sides of which, in the design position, face the occupant and are referred to herein as the A-sides, and the sides facing away from the occupant and are referred to herein as the B-sides (see, for example, Figure 6a ).

[0128] First, combine Figures 1a to 4 Several exemplary usage positions or usage scenarios of the vehicle seat 1 of the present invention are exemplarily introduced.

[0129] Figure 1a and Figure 1b The vehicle seat 1 of the present invention is schematically illustrated in a perspective view and a side view, respectively, in a "large trunk" position. Here, the rear seat 1 of the present invention is moved to the "large trunk" position, meaning that the seat cushion 2 and seat back 3 are moved to their horizontal positions, with their B surfaces pointing upward and substantially coplanar with each other. This creates a "trunk"-like space above the rear seat 1 for storing items, such as large items like bicycles. To achieve this position, the seat cushion 2 is tilted over 180° from its designed position.

[0130] Figure 2a and Figure 2b The vehicle seat 1 of the present invention is schematically illustrated in a perspective view and a side view, respectively, in a "bed" position. Here, the rear seat 1 of the present invention is moved to the "bed" position, with the seat cushion 2 and seat back 3 moved to their horizontal positions, with their A-surfaces pointing upward and substantially coplanar with each other. In this position, the rear seat 1 is suitable for reclining passengers, similar to a "bed."

[0131] It can also be seen here that, for example, in the case where the rear seat row 1 is a third row of seats, the second row of seats can be rotated rearwards by 180° to form a longer “bed” with the rear vehicle seats 1 .

[0132] Figure 3a and Figure 3bThe following schematic diagrams illustrate the use of the vehicle seat 1 of the present invention in its "tray" position, schematically illustrated in perspective and side views. Here, one of the rear seats 1 (e.g., the right rear seat (occupying 40% of the rear seat width)) is positioned in the "tray" position, with the seatback 3 of this seat 1 positioned horizontally with its B-side facing upward. In this position, the seat 1 can be used as a tray table for placing small items such as a cell phone, book, or snacks.

[0133] It can also be seen here that, for example, when the rear seat 1 is the third row of seats, the second row of seats can be rotated backwards 180 degrees, and the passengers of both rows of seats can use the "small table" for entertainment activities such as playing cards.

[0134] Figure 4 A side view schematically illustrates the use of the vehicle seat 1 of the present invention in a so-called "fishing" position. Here, the seat back 3 of the rear seat 1 of the present invention is moved forward over the seat cushion 2, with its B-side serving as a reclining surface for a "fisherman" facing the rear of the vehicle and "fishing" with the trunk open. The seat cushion 2 may have been moved rearward along its rails (thus, further away from the seat in front of it and closer to or beyond the trunk sill) to facilitate fishing.

[0135] In general, the vehicle seat 1 of the present invention may include a seat drive system, which is configured to move the seat cushion 2 and the seat back 3 to achieve movement of the vehicle seat 1 between at least two or more positions, especially at least to achieve movement from the design position to the above-mentioned "large luggage box" position and "bed" position.

[0136] The seat drive system of the vehicle seat 1 of the present invention includes a backrest drive system for the seat back 3 and a seat cushion drive system for the seat cushion 2. The backrest drive system includes a backrest transmission mechanism and a backrest driver for driving the seat back 3 to move via the backrest transmission mechanism; the seat cushion drive system includes a seat cushion transmission mechanism and a seat cushion driver for driving the seat cushion 2 to move via the seat cushion transmission mechanism.

[0137] The backrest transmission mechanism includes a restraining end and a movable end. The restraining end of the backrest transmission mechanism can be pivotally mounted on the vehicle floor, or pivotally mounted on a slide rail that can slide relative to the vehicle floor to move the vehicle seat 1.

[0138] Driven by a first backrest actuator (e.g., a motor and / or recliner), the backrest drive mechanism can pivot about a first pivot portion located at its restraining end, thereby driving the movable end of the backrest drive mechanism to move or oscillate. The seat back 3, for example, at its bottom end (the end closest to the seat cushion 2), is pivotally connected to the movable end of the backrest drive mechanism. This allows the seat back 3 to move or oscillate in response to the movement or oscillation of the movable end of the backrest drive mechanism. Furthermore, it allows the seat back 3 to pivot relative to the backrest drive mechanism about a second pivot portion located at the movable end of the backrest drive mechanism. This pivoting of the seat back 3 relative to the backrest drive mechanism about the second pivot portion can be driven by a second backrest actuator (e.g., a motor and / or recliner). Therefore, the seat back 3 of the vehicle seat 1 according to the present invention can be referred to as a "dual-drive" seat back 3. In an embodiment according to the present invention, when the first backrest drive and the second backrest drive are not working, the pivoting of the backrest transmission mechanism around the first pivot portion and the pivoting of the seat back 3 around the second pivot portion can be locked, so that the seat back 3 cannot move.

[0139] The seat cushion drive for the seat cushion 2 can drive the seat cushion 2 to pivot more than 180 degrees around its front support through the seat cushion transmission mechanism. The seat cushion 2 can be hinged to the front support at the front end, and the front support can be fixedly or pivotally mounted on the vehicle floor or on a slide rail.

[0140] In the vehicle seat 1 of the present invention, the bottom end of the seat back 3 and the backrest drive mechanism for the seat back 3 are not mounted on the seat cushion 2, and the backrest drive system for the seat back 3 and the cushion drive system for the seat cushion 2 can be driven independently of each other. This construction enables independent control of the movement of both the seat back 3 and the seat cushion 2. This independent control, combined with the "dual drive" of the seat back 3 mentioned above, gives the vehicle seat 1 of the present invention more flexible adjustment capabilities. This more flexible adjustment capability not only improves the comfort of the vehicle seat 1 of the present invention but also expands the use scenarios of the vehicle seat 1 of the present invention, as will be described in detail below.

[0141] See also Figure 5a and 5b , shows a vehicle seat 1 according to a first embodiment of the present invention, wherein Figure 5a The vehicle seat 1 is shown with its outer covering removed to reveal its inner frame, and is in its initial design position for a passenger to sit. It can be seen that the seat drive system of the vehicle seat 1 according to the first embodiment of the present invention includes a backrest drive system for the seat back 3 and a seat cushion drive system for the seat cushion 2. Figure 5b An exploded view of the seat cushion 2 and the cushion drive system is shown.

[0142] In this first embodiment, the backrest transmission mechanism can be constructed as a "single-link" transmission mechanism. Figure 5a As shown, the backrest transmission mechanism 301 may include only a connecting rod 3011, for example, in the form of a plate. The connecting rod 3011 includes a restraining end 3012 and a movable end 3013. The restraining end 3012 of the connecting rod 3011 may be pivotally mounted on the vehicle floor or on the slide rail 4. Driven by a first backrest driver 302 (e.g., a motor and / or a recliner), the connecting rod 3011 can pivot about a first pivot portion provided at the restraining end 3012, thereby driving the connecting rod 3011 of the backrest transmission mechanism 301 and the backrest 3 to move or swing together. The seat back 3, for example, at its bottom end, can be pivotally connected to the movable end 3013 of the connecting rod 3011 of the backrest transmission mechanism 301. This allows the seat back 3 to move or swing accordingly with the movement or swinging of the connecting rod 3011 of the backrest transmission mechanism 301. Furthermore, it allows the seat back 3 to pivot relative to the backrest transmission mechanism 301 (more specifically, the connecting rod 3011) about a second pivot portion provided at the movable end 3013 of the connecting rod 3011 of the backrest transmission mechanism 301. This pivoting of the seat back 3 relative to the backrest transmission mechanism 301 about the second pivot portion can be driven by a second backrest driver 303 (e.g., a motor and / or recliner). Furthermore, as mentioned above, when the first backrest driver 302 and the second backrest driver 303 are inoperative, the pivoting of the backrest transmission mechanism 301 about the first pivot portion and the pivoting of the seat back 3 about the second pivot portion can be locked, preventing the seat back 3 from moving.

[0143] In this embodiment, the connecting rod 3011 can be a one-piece, integral component. In some embodiments, the connecting rod 3011 can be formed from at least two components. These two components can be fixed to each other (i.e., cannot pivot relative to each other) to form the connecting rod 3011. This configuration facilitates assembly of the vehicle seat 1. For example, during assembly, one component can be pivotally mounted on the vehicle floor or rail 4 and mounted with the corresponding first backrest actuator 302, while the other component can be pivotally mounted on the seat back 3 and mounted with the corresponding second backrest actuator 303. Fasteners can then be used to secure the two components together. This assembly method makes operation much easier.

[0144] In this first embodiment, if Figure 5a As shown, the backrest transmission mechanism 301 may include two connecting rods 3011, which are respectively provided on the left and right sides of the vehicle seat 1. The two connecting rods 3011 may be configured to be able to move synchronously under the drive of the same motor, for example, by means of two recliners connected to each other, which are driven by a single motor to move synchronously.

[0145] In this first embodiment, if Figure 5a and 5b As shown, the seat cushion 2 is pivotally connected at its front portion (eg, by stepped bolts) to a front support 5 , which is fixedly mounted on the vehicle floor or on a slide rail 4 .

[0146] In this first embodiment, if Figure 5a and 5b As shown, the seat transmission mechanism 201 may be constructed as a “double-link” transmission mechanism, that is, the seat transmission mechanism 201 may include a first link 2011 and a second link 2012 hinged to each other.

[0147] The first connecting rod 2011 includes a restraining end 2013 below and a movable end 2014 above. The restraining end 2013 of the first connecting rod 2011 can be pivotally mounted on the front support 5. The first connecting rod 2011 can be driven by the seat drive 202 as an active member to pivot, while the second connecting rod 2012 serves as a driven rod. In the present embodiment, the seat drive 202 is configured as a combination of a recliner 2021 and a motor assembly 2022. The motor assembly 2022 is fixed on the front support 5 via a mounting bracket 2026 and can drive the first connecting rod 2011 to pivot around the first pivoting portion at its restraining end 2013 by the recliner 2021. For this reason, the fixed plate of the recliner 2021 can be fixed on the front support 5, while the movable plate of the recliner 2021 can be fixed on the first connecting rod 2011. Additionally, a stop point 2023 may be provided, for example, welded, on the outer circumference of the movable disc of the recliner 2021 (or on the first connecting rod 2011). Two circumferentially spaced stop points 2024 corresponding to the stop point 2023 may be provided, for example, welded, on the front support member 5. When the movable disc drives the first connecting rod 2011 forward until the stop point 2023 abuts against a corresponding stop point 2024 above, the movable disc and the first connecting rod 2011 reach their maximum forward pivot position, corresponding, for example, to the flattened position with the B surface facing upward after the seat cushion 2 has pivoted forward more than 180 degrees. In the design position, the seat cushion actuator 202 assembly can be locked, locking the first connecting rod 2011 and the seat cushion 2 in the design position. If the seat cushion 2 is not locked in the design position, the seat cushion 2 can further pivot to a position beyond its design position, at which point the stop point 2023 on the movable disc abuts against a corresponding stop point 2024 below.

[0148] In this article, any solution using a combination of a motor assembly and a recliner for driving can be replaced by using only the recliner without the motor assembly. In this case, the recliner is a manual recliner that is manually driven by the user.

[0149] In some embodiments, the seat drive 202 may also be configured as a combination of a gear plate and a motor assembly. For example, the gear plate may be configured at the restraining end 2013 of the first connecting rod 2011, and the motor assembly may be fixed to the front support 5. The output gear of the motor assembly engages with the teeth of the gear plate to drive the first connecting rod 2011 to pivot.

[0150] In some embodiments, the seat cushion driver 202 may also be configured as a push rod motor assembly. For example, the push rod motor assembly may be hingedly connected to the slide rail 4 or the vehicle floor at its motor side and hingedly connected to the first connecting rod 2011 at its push rod side. The first connecting rod 2011 is driven to pivot by the extension and retraction of the push rod of the push rod motor assembly.

[0151] The second link 2012 includes a lower first movable end 2015 and an upper second movable end 2016. The first movable end 2015 of the second link 2012 is hingedly connected to the movable end 2014 of the first link 2011 (e.g., via a stepped bolt or rivet). The second movable end 2016 of the second link 2012 is hingedly connected to the seat cushion 2, such as the side panel 203 thereof (e.g., via a stepped bolt or rivet). The hinged connection between the second movable end 2016 of the second link 2012 and the seat cushion 2 is located a certain distance behind the hinged connection between the seat cushion 2 and the front support 5, for example, in the middle third of the length of the seat cushion 2, e.g., approximately in the middle. This allows the front support 5 and the second link 2012 to cooperate to provide stable support for the seat cushion 2 in its designed position. Furthermore, the two links 2011 and 2012 can be used to pivot the seat cushion 2 forward to a desired angle exceeding 180°.

[0152] In the designed position, the hinged connection between the first link 2011 and the second link 2012 is located rearward and below the hinged connection between the second link 2012 and the seat cushion 2. Therefore, when the first link 2011 is driven to pivot forward, it can drive the second link 2012 to pivot the seat cushion 2 forward. Specifically, it can drive the seat cushion 2 to pivot forward past its vertical position to a horizontal position with its surface B facing upward. In this embodiment, the first link 2011 and the second link 2012 can form an acute angle. In this embodiment, the length of the first link 2011 (specifically, the distance between the hinged connection at its restraining end and the hinged connection at its movable end) is greater than the distance between the hinged connection between the seat cushion 2 and the front support 5 and the hinged connection between the second link 2012 and the seat cushion 2. This facilitates the forward pivoting of the seat cushion 2 by the first link 2011 and the second link 2012 beyond 180 degrees.

[0153] Here, the first link 2011, the second link 2012, the seat cushion 2 and the front support 5 form a "four-link mechanism".

[0154] In some embodiments, the second link 2012 can act as an active link and be driven by the seat cushion driver 202 to pivot, while the first link 2011 acts as a driven link. For example, the seat cushion driver 202 is provided at the hinge portion between the second link 2012 and the seat cushion 2. The seat cushion driver 202 can be, for example, a combination of a gear plate and a motor assembly.

[0155] The seat transmission mechanism 201 may include two pairs of first connecting rods 2011 and second connecting rods 2012, which are respectively arranged on the left and right sides of the vehicle seat 1. The two pairs of first connecting rods 2011 and second connecting rods 2012 may be configured to move synchronously under the drive of the same motor.

[0156] Figure 6a A schematic diagram shows a vehicle seat 1 of a first embodiment in a design position, wherein both the seat cushion 2 and the seat back 3 are in the design position. Figure 6b A schematic principle diagram shows the vehicle seat 1 of the first embodiment in the design position, wherein both the backrest drive 301 and the seat cushion drive 201 are in the design position.

[0157] Figure 7 FIG. 3 shows an alternative embodiment of the backrest transmission mechanism 301 , in which the backrest transmission mechanism 301 can be constructed as a “four-bar linkage” transmission mechanism. Figure 7 As shown, the backrest transmission mechanism 301 may include a first connecting rod 3021, a second connecting rod 3022, and a third connecting rod 3023. The first connecting rod 3021 may include a restraining end 3021-1 and a movable end 3021-2, and the second connecting rod 3022 may include a restraining end 3022-1 and a movable end 3022-2. The third connecting rod 3023 may include a first foot 3023-1, a second foot 3023-2, and a third foot 3023-3. For example, the third connecting rod 3023 may be configured in a triangular shape. The restraining end 3021-1 of the first connecting rod 3021 and the restraining end 3022-1 of the second connecting rod 3022 may be pivotally mounted on the vehicle floor or the slide rail 4, respectively. The movable end 3021 - 2 of the first link 3021 and the movable end 3022 - 2 of the second link 3022 may be pivotally connected to the first leg 3023 - 1 and the second leg 3023 - 2 of the third link 3023 , respectively.

[0158] In this alternative embodiment, the first link 3021, the second link 3022, the third link 3023 of the back drive 301, and the components (vehicle floor, slide rail 4) on which the constrained end 3021-1 of the first link 3021 and the constrained end 3022-1 of the second link 3022 are mounted constitute a so-called "four-bar" linkage. In this alternative embodiment, at least one of the first link 3021 and the second link 3022 of the back drive 301 can be driven by means of the first back driver 302 (e.g. an electric motor and / or an angle adjuster) such that the first link 3021 and the second link 3022 can be pivoted about the first pivot provided at the constrained end 3021-1 of the first link 3021 and the second pivot provided at the constrained end 3022-1 of the second link 3022, respectively, thereby causing the movable end 3021-2 of the first link 3021 and the movable end 3022-2 of the second link 3022 of the back drive 301 to move or oscillate, which in turn causes the third link 3023 to move or oscillate.

[0159] In this alternative embodiment, the seat back 3, e.g. its bottom end, can be pivotably connected with the third foot 3023-3 of the third link 3023. On the one hand, this enables the seat back 3 to follow the movement or oscillation of the third foot 3023-3 of the third link 3023 of the back drive 301 and to move or oscillate accordingly, and on the other hand, this also enables the seat back 3 to be pivoted relative to the back drive 301 (more specifically, its third link 3023) about the third pivot provided at the third foot 3023-3 of the third link 3023 of the back drive 301. The pivoting of the seat back 3 relative to the back drive 301 about the third pivot can be performed under the drive of the second back driver 303 (e.g. an electric motor and / or an angle adjuster). In addition, as mentioned before, when the first back driver 302 and the second back driver 303 are not active, the pivoting of the back drive 301 about the first and second pivots and the pivoting of the seat back 3 about the third pivot can be locked such that the seat back 3 cannot move.

[0160] Here, the third foot 3023-3 of the third link 3023 can be regarded as the movable end of the entire back drive 301, and the constrained end 3021-1 of the first link 3021 and the constrained end 3022-1 of the second link 3022 can be regarded as the constrained end of the entire back drive 301.

[0161] In comparison to the backrest transmission 301 configured as a "single-link" transmission in the first embodiment, the backrest transmission 301 configured as a "four-link" transmission in the alternative embodiment is capable of realizing additional advantages. In particular, the backrest transmission 301 in the alternative embodiment is capable of being applied in high-strength application scenarios, such as in a seat backrest 3 comprising ABTS (All Belts To Seat) which requires high strength.

[0162] The "four-link" transmission in the alternative embodiment is subjected to a smaller torque when subjected to an external force of the same size than the "single-link" transmission. In other words, the "four-link" transmission of the alternative embodiment will be capable of withstanding a greater external force or strength in comparison to the "single-link" transmission. Thus, the backrest transmission 301 configured as a "four-link" transmission of the alternative embodiment will be more suitable for high-strength application scenarios. In other words, by means of the backrest transmission 301 configured as a "four-link" transmission, the vehicle seat 1 of the present application also has more superior strength performance.

[0163] Regardless of whether it is the "single-link" transmission 301 or the "four-link" transmission 301 of the seat backrest 3, they can be used in cooperation with the seat cushion drive system of the seat cushion 2 in the different embodiments of the present application.

[0164] Figure 8 The state of the seat cushion transmission 201 is shown when the seat cushion 2 is pivoted forward to the upright position, where it can be seen that the first link 2011 and the second link 2012 have not yet reached the dead point position of 180°, but are still in an obtuse angle position, whereby the first link 2011 can continue to be pivoted forward so that the seat cushion 2 passes the upright position.

[0165] Figure 9a A schematic view of the vehicle seat 1 of the first embodiment in the "big luggage compartment" position is shown, in which the seat cushion 2 and the B face of the seat backrest 3 are facing upwards and lie in the same plane as one another. Figure 9b A schematic view of the seat frame of the vehicle seat 1 of the first embodiment in the "big luggage compartment" position is shown. Figure 9c A schematic view of the vehicle seat 1 of the first embodiment in the "big luggage compartment" position is shown.

[0166] In order to move the vehicle seat 1 from the design position to the "big luggage compartment" position, the seat backrest 3 and the seat cushion 2 are pivoted to their flat-folded state with their B faces facing upwards by means of the backrest transmission 301 and the seat cushion transmission 201, respectively. To this end,

[0167] Adjust the position of the seat cushion 2: Pivot the first link 2011 forward around the front support 5 (beyond its vertical position) through the seat cushion driver 202, and at the same time, the first link 2011 drives the second link 2012 to move, so as to drive the seat cushion 2 to pivot forward around the front support 5 until the seat cushion 2 (after pivoting more than 180°) has side B facing upward and flush with the horizontal plane.

[0168] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest driver 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B surface of the seat back 3 faces upward and is flush with the B surface of the seat cushion 2 and is on the same horizontal plane.

[0169] Figure 10a A schematic diagram of the vehicle seat 1 of the first embodiment is shown in a “bed” position, with the A-sides of the seat cushion 2 and seat back 3 facing upwards and lying in the same plane with each other. Figure 10b A schematic diagram shows the seat frame of a vehicle seat 1 of a first embodiment in the “bed” position. Figure 10c A schematic principle diagram shows a vehicle seat 1 of a first embodiment in the “bed” position.

[0170] In order to move the vehicle seat 1 from the design position to the "bed" position, the seat back 3 and the seat cushion 2 are pivoted to their A-side-up flat position by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0171] For the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest drive 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted backward by the second backrest drive 303 (here the upper end recliner) until the A surface of the seat back 3 is facing upward and is on a horizontal plane or a plane near the horizontal plane (that is, here including the horizontal plane and a plane that deviates from the horizontal plane at a small angle and is still comfortable to lie on).

[0172] Regarding the seat cushion 2: The seat cushion actuator 202 pivots the first link 2011 forward about the front support 5 by a small angle (without exceeding its vertical position). Simultaneously, the first link 2011 drives the second link 2012 to pivot forward about the front support 5 until surface A of the seat cushion 2 faces upward and is flush with the backrest's "bed-like" plane. The seat cushion 2 pivots only a small angle, raising its rear end to align with the backrest's "bed-like" plane. Consequently, surface A of the seat cushion 2 and surface A of the seat back 3 are flush and located on or near a horizontal plane.

[0173] Figure 11a A schematic diagram shows the vehicle seat 1 of the first embodiment in the “tray” position, with the B-side of the seat back 3 facing upwards and horizontal. Figure 11b A schematic principle diagram shows a vehicle seat 1 of a first embodiment in the “tray” position.

[0174] In order to move the vehicle seat 1 from the design position to the "small table" position, the seat back 3 is pivoted to its flat position with the B side facing upwards by means of the backrest transmission mechanism 301, while the seat cushion 2 can remain stationary.

[0175] For the seat back 3: first, the seat back 3 is pivoted forward by an angle (about 40°) through the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the backrest transmission mechanism 301 is pivoted forward together with the seat back 3 through the first backrest driver 302 (here the lower end recliner) to the movable end of the backrest transmission mechanism 301 to reach the required height position of the seat back 3, i.e., the "small table"; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B side of the seat back 3 is facing upward and is on a horizontal plane.

[0176] For seat cushion 2: Leave it in place.

[0177] Figure 12a A schematic diagram shows the vehicle seat 1 of the first embodiment in the “folded backrest” position, wherein the A-surface of the seat back 3 and the A-surface of the seat cushion 2 are in zero contact with one another. Figure 12b A schematic principle illustration of a vehicle seat 1 of a first embodiment is shown in the “folded backrest” position.

[0178] In order to move the vehicle seat 1 from the design position to the "backrest folded" position, the seat back 3 and the seat cushion 2 are pivoted to a position almost parallel to each other by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201.

[0179] Adjust the position of the seat cushion 2: Use the cushion driver 202 to pivot the first link 2011 backward around the front support 5 by a small angle. The first link 2011 drives the second link 2012 to move, thereby driving the seat cushion 2 to pivot backward around the front support 5 by a small angle, so that the seat cushion 2 is tilted further backward and downward.

[0180] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward (for example, about 20°) together with the seat back 3 by the first backrest driver 302 (here the lower end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the A surface of the seat back 3 and the A surface of the seat cushion 2 are in contact with each other or are in zero contact.

[0181] Figure 13a A schematic diagram shows a vehicle seat 1 of a first embodiment in a “large recline” position, wherein the A-surfaces of the seat cushion 2 and the seat back 3 are both facing upwards and forming an obtuse angle with respect to one another. Figure 13b A schematic principle diagram shows a vehicle seat 1 of a first embodiment in a “recline” position.

[0182] In order to move the vehicle seat 1 from the design position to the "large reclining" position, the seat back 3 and the seat cushion 2 are pivoted to a state where they form an obtuse angle with each other by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0183] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 and the seat back 3 are pivoted backward (for example, about 30°) through the first backrest drive 302 (here the lower end recliner); then, the seat back 3 is pivoted backward to the desired maximum reclining angle through the second backrest drive 303 (here the upper end recliner).

[0184] Adjust the position of the seat cushion 2: Use the cushion driver 202 to pivot the first link 2011 backward around the front support 5 by a small angle. At the same time, the first link 2011 drives the second link 2012 to move, so as to drive the seat cushion 2 to pivot backward or downward around the front support 5 by a small angle, so that the bite line between the seat cushion 2 and the seat back 3 is aligned to achieve a large lying position without a waist lift.

[0185] Figure 14a A schematic diagram shows a vehicle seat 1 of a first embodiment in a “fishing” position. Figure 14b A schematic principle diagram of a vehicle seat 1 of a first embodiment is shown in the “fishing” position.

[0186] In order to move the vehicle seat 1 from the design position to the "fishing" position, the seat back 3 and the seat cushion 2 are pivoted by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0187] Adjust the position of the seat back 3: first, the seat back 3 is pivoted backward by an angle (about 60°) by the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is moved forward by the first backrest driver 302 (here the lower end recliner) via the backrest transmission mechanism 301 until its lower end passes over the front end of the seat cushion 2; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) (about 100°) so that the B surface of the seat back 3 is suitable as a backrest surface for the "fisherman".

[0188] Adjust the position of the seat cushion 2: Use the cushion driver 202 to pivot the first link 2011 forward around the front support 5 by a small angle. At the same time, the first link 2011 drives the second link 2012 to move, so as to drive the seat cushion 2 to pivot forward around the front support 5 by a small angle (for example, about 25°), so that the seat cushion 2 is suitable for supporting the buttocks of the "fisherman".

[0189] See also Figure 15a and 15b , shows a vehicle seat 1 according to a second embodiment of the present invention, wherein Figure 15a The vehicle seat 1 is shown with its outer covering removed to reveal its inner frame, and is in its initial design position for a passenger to sit. It can be seen that the seat drive system of the vehicle seat 1 according to the second embodiment of the present invention includes a backrest drive system for the seat back 3 and a seat cushion drive system for the seat cushion 2. Figure 15b An exploded view of the seat cushion 2 and the cushion drive system is shown.

[0190] In the second embodiment, the backrest transmission mechanism 301 adopts the backrest transmission mechanism 301 in the first embodiment (including alternative implementations), and reference may be made to the description of the first embodiment, which will not be repeated here.

[0191] In this second embodiment, if Figure 15a and 15b As shown, unlike the first embodiment, the seat transmission mechanism 201 can be constructed as a "connecting rod + sliding groove" transmission mechanism. The seat transmission mechanism 201 can include a single connecting rod 2011 (which can be constructed similarly to the first connecting rod 2011 in the first embodiment and uses the same reference numerals here) and a sliding groove 204 slidably articulated with the connecting rod 2011.

[0192] The link 2011 comprises a constraint end 2013 and a movable end 2014. The constraint end 2013 of the link 2011 can be pivotably mounted on the front support 5. The link 2011 can be actuated to perform a pivoting movement by the seat cushion actuator 202. In the present embodiment, the seat cushion actuator 202 is configured as a combination of an angle adjuster 2021 and a motor assembly 2022, which is fixed to the front support 5 by a mounting bracket 2026, and the link 2011 can be actuated to perform a pivoting movement about the first pivot portion at the constraint end 2013 thereof by the angle adjuster 2021. To this end, the fixed disc of the angle adjuster 2021 can be fixed to the front support 5, and the movable disc of the angle adjuster 2021 can be fixed to the link 2011. Additionally, a stop point 2023 can be provided, e.g. welded, on the outer periphery of the movable disc of the angle adjuster 2021, and two corresponding stop points 2024 spaced apart in the circumferential direction corresponding to the stop point 2023 can be provided, e.g. welded, on the front support 5. When the movable disc drives the link 2011 to rotate forward to the stop point 2023 to abut against the upper corresponding stop point 2024, the movable disc and the link 2011 reach the forward pivoting limit position, which corresponds to the B face-up flat position after the seat cushion 2 is pivoted forward more than 180 degrees, for example. In the design position, the combination of the seat cushion actuator 202 can be locked, so that the link 2011 and the seat cushion 2 are locked in the design position.

[0193] In some embodiments, the seat cushion actuator 202 can also be configured as a combination of a toothed plate and a motor assembly. For example, the toothed plate can be fixedly configured, e.g. integrally configured or separately configured and fixedly connected, at the constraint end 2013 of the link 2011, and the motor assembly can be fixedly configured at the front support 5, and the link 2011 is actuated to perform a pivoting movement by the meshing of the output gear of the motor assembly and the teeth of the toothed plate.

[0194] In some embodiments, the seat cushion actuator 202 can also be configured as a push rod motor assembly. For example, the push rod motor assembly can be hingedly connected at the motor side to the slide rail 4 or the vehicle floor, and hingedly connected at the push rod side to the link 2011, and the link 2011 is actuated to perform a pivoting movement by the extension and retraction of the push rod of the push rod motor assembly.

[0195] The slide groove 204 is longly formed in the seat cushion 2, e.g. in the side plate 203 thereof. The slide groove 204 is formed on the front half of the side plate 203, and the rear end thereof is located at a relatively far distance behind the hinge portion of the seat cushion 2 and the front support 5, e.g. at the approximate middle position of the seat cushion 2. The movable end 2014 of the link 2011 is slidably hingedly connected in the slide groove 204, e.g. by a step bolt or a step rivet. In the design position, the movable end 2014 of the link 2011 is hingedly connected at the rear position of the slide groove 204 (but not stopped at the rear end of the slide groove 204, see Figure 16b ), so that the front support 5 and the connecting rod 2011 can cooperate to provide stable support for the seat cushion 2.

[0196] In the design position, the connecting rod 2011 is tilted upward and rearward and forms an acute angle with the slide groove 204, so that when the connecting rod 2011 is driven to pivot forward, the movable end 2014 of the connecting rod 2011 can slide forward along the slide groove 204 and thus can drive the seat cushion 2 to pivot forward through the slide groove 204, specifically, can drive the seat cushion 2 to pivot forward beyond the vertical position to a horizontal position with its B side facing upward.

[0197] The seat transmission mechanism 201 may include two pairs of connecting rods 2011 and slides 204, which are respectively arranged on the left and right sides of the vehicle seat 1. The two pairs of connecting rods 2011 and slides 204 may be configured to move synchronously under the drive of the same seat driver 202.

[0198] Figure 16a A schematic diagram shows a vehicle seat 1 of a second embodiment in a design position, wherein both the seat cushion 2 and the seat back 3 are in the design position. Figure 16b A schematic diagram of the vehicle seat 1 of the second embodiment is shown in its design position, with both the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201 in their design positions. As can be seen, the movable end 2014 of the connecting rod 2011 is hinged within the chute 204 and is spaced a certain distance from both the front and rear ends of the chute 204, with a smaller distance from the rear end. This allows the movable end 2014 of the connecting rod 2011 to slide forward or backward within the chute 204 from its design position.

[0199] Figure 17 Shown with Figure 7 For an alternative embodiment of the same backrest transmission mechanism 301 shown, reference may be made to Figure 7 The description of Figure 17 It can be seen that the alternative embodiment of the backrest transmission mechanism 301 can be used in combination with the seat cushion transmission mechanism 201 in the second embodiment.

[0200] Figure 18 The figure shows the state of the seat cushion transmission mechanism 201 when the seat cushion 2 is pivoted forward to a vertical position. It can be seen here that the connecting rod 2011 has pivoted beyond the vertical position, and the movable end 2014 of the connecting rod 2011 has slid to the approximate middle position of the slide groove 204, so that the connecting rod 2011 can continue to pivot forward and the seat cushion 2 can continue to pivot beyond the vertical position.

[0201] Figure 19aA schematic diagram of the vehicle seat 1 of the second embodiment is shown in the “large trunk” position, with the B-sides of the seat cushion 2 and the seat back 3 facing upwards and lying in the same plane with each other. Figure 19b A schematic principle diagram of a vehicle seat 1 of a second embodiment is shown in the “large luggage compartment” position.

[0202] In order to move the vehicle seat 1 from the design position to the "large luggage compartment" position, the seat back 3 and the seat cushion 2 are pivoted to their B-side-up flattened positions by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0203] Adjust the position of the seat cushion 2: Pivot the connecting rod 2011 forward around the front support 5 (beyond its vertical position) through the seat cushion driver 202, and slide the connecting rod 2011 forward in the slide slot 204 to drive the seat cushion 2 to pivot forward around the front support 5 until the seat cushion 2 (after pivoting more than 180°) has side B facing upward and flush with the horizontal plane.

[0204] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest driver 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B surface of the seat back 3 faces upward and is flush with the B surface of the seat cushion 2 and is on the same horizontal plane.

[0205] Figure 20a A schematic diagram of the vehicle seat 1 of the second embodiment is shown in a “bed” position, with the A-sides of the seat cushion 2 and seat back 3 facing upwards and lying in the same plane with each other. Figure 20b A schematic principle diagram shows a vehicle seat 1 of a second embodiment in the “bed” position.

[0206] In order to move the vehicle seat 1 from the design position to the "bed" position, the seat back 3 and the seat cushion 2 are pivoted to their A-side-up flat position by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0207] For the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest drive 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted backward by the second backrest drive 303 (here the upper end recliner) until the A surface of the seat back 3 is facing upward and is on a horizontal plane or a plane near the horizontal plane (that is, here including the horizontal plane and a plane that deviates from the horizontal plane at a small angle and is still comfortable to lie on).

[0208] Regarding the seat cushion 2: The seat cushion driver 202 pivots the connecting rod 2011 forward about the front support 5 by a small angle (without exceeding its vertical position). The connecting rod 2011 slides forward within the slide slot 204, driving the seat cushion 2 to pivot forward about the front support 5 until surface A of the seat cushion 2 faces upward and is flush with the "bed-like" plane of the backrest. Here, the seat cushion 2 pivots only a small angle, raising the rear end of the seat cushion 2 to be flush with the "bed-like" plane of the backrest. Consequently, surface A of the seat cushion 2 and surface A of the seat back 3 are flush and located on or near a horizontal plane.

[0209] Figure 21a A schematic diagram of the vehicle seat 1 of the second embodiment is shown in the “tray” position, with the B-side of the seat back 3 facing upwards and horizontal. Figure 21b A schematic principle diagram shows a vehicle seat 1 of a second embodiment in the “tray” position.

[0210] In order to move the vehicle seat 1 from the design position to the "small table" position, the seat back 3 is pivoted to its flat position with the B side facing upwards by means of the backrest transmission mechanism 301, while the seat cushion 2 can remain stationary.

[0211] For the seat back 3: first, the seat back 3 is pivoted forward by an angle (about 40°) through the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the backrest transmission mechanism 301 is pivoted forward together with the seat back 3 through the first backrest driver 302 (here the lower end recliner) to the movable end of the backrest transmission mechanism 301 to reach the required height position of the seat back 3, i.e., the "small table"; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B side of the seat back 3 is facing upward and is on a horizontal plane.

[0212] For seat cushion 2: Leave it in place.

[0213] Figure 22a A schematic diagram shows a vehicle seat 1 of a second embodiment in the “folded backrest” position, wherein the A-surface of the seat back 3 and the A-surface of the seat cushion 2 are in zero contact with one another. Figure 22b A schematic principle diagram shows a vehicle seat 1 of a second embodiment in the “folded backrest” position.

[0214] In order to move the vehicle seat 1 from the design position to the "backrest folded" position, the seat back 3 and the seat cushion 2 are pivoted to a position almost parallel to each other by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201.

[0215] Adjust the position of the seat cushion 2: Use the cushion driver 202 to pivot the connecting rod 2011 backward around the front support 5 by a small angle, and the connecting rod 2011 slides backward in the slide groove 204 to drive the seat cushion 2 to pivot backward around the front support 5 by a small angle, so that the seat cushion 2 tilts further downward and rearward.

[0216] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward (for example, about 20°) together with the seat back 3 by the first backrest driver 302 (here the lower end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the A surface of the seat back 3 and the A surface of the seat cushion 2 are in contact with each other or are in zero contact.

[0217] Figure 23a A schematic diagram shows a vehicle seat 1 of a second embodiment in a “large recline” position, wherein the A-surfaces of the seat cushion 2 and the seat back 3 are both facing upwards and forming an obtuse angle with respect to one another. Figure 23b A schematic principle diagram shows a vehicle seat 1 of a second embodiment in a “reclining” position.

[0218] In order to move the vehicle seat 1 from the design position to the "large reclining" position, the seat back 3 and the seat cushion 2 are pivoted to a state where they form an obtuse angle with each other by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0219] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 and the seat back 3 are pivoted backward (for example, about 30°) through the first backrest drive 302 (here the lower end recliner); then, the seat back 3 is pivoted backward to the desired maximum reclining angle through the second backrest drive 303 (here the upper end recliner).

[0220] Adjust the position of the seat cushion 2: Use the cushion driver 202 to pivot the connecting rod 2011 backward around the front support 5 by a small angle, and the connecting rod 2011 slides backward in the slide groove 204 to drive the seat cushion 2 to pivot backward or downward around the front support 5 by a small angle, so that the bite line between the seat cushion 2 and the seat back 3 is aligned to achieve a large lying position without a waist lift.

[0221] Figure 24a A schematic diagram shows a vehicle seat 1 of a second embodiment in the “fishing” position. Figure 24b A schematic principle diagram of a vehicle seat 1 of a second embodiment is shown in the “fishing” position.

[0222] In order to move the vehicle seat 1 from the design position to the "fishing" position, the seat back 3 and the seat cushion 2 are pivoted by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0223] Adjust the position of the seat back 3: first, the seat back 3 is pivoted backward by an angle (about 60°) by the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is moved forward by the first backrest driver 302 (here the lower end recliner) via the backrest transmission mechanism 301 until its lower end passes over the front end of the seat cushion 2; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) (about 100°) so that the B surface of the seat back 3 is suitable as a backrest surface for the "fisherman".

[0224] Adjust the position of the seat cushion 2: pivot the connecting rod 2011 forward around the front support 5 by a small angle through the cushion driver 202, and slide the connecting rod 2011 forward in the slide groove 204 to drive the seat cushion 2 to pivot forward around the front support 5 by a small angle (for example, about 25°), so that the seat cushion 2 is suitable for supporting the buttocks of the "fisherman".

[0225] See also Figure 25a and 25b , shows a vehicle seat 1 according to a third embodiment of the present invention, wherein Figure 25a The vehicle seat 1 is shown with its outer covering removed to reveal its inner frame, and is in its initial design position for a passenger to sit. It can be seen that the seat drive system of the vehicle seat 1 of the third embodiment of the present invention includes a backrest drive system for the seat back 3 and a seat cushion drive system for the seat cushion 2. Figure 25b An exploded view of the seat cushion 2 and the cushion drive system is shown.

[0226] In the third embodiment, the backrest transmission mechanism 301 adopts the backrest transmission mechanism 301 in the first embodiment (including alternative implementations), and reference may be made to the description of the first embodiment, which will not be repeated here.

[0227] In this third embodiment, if Figure 25a and 25b As shown, unlike the above embodiments, the seat drive system can be constructed as a "tooth plate + motor", that is, it can include a tooth plate 501 as a seat transmission mechanism 201 and a motor assembly 205 with an output gear 2051 as a seat driver 202 that is driven by tooth meshing with the tooth plate 501.

[0228] The front support member 5 is fixed at its lower end to the slide rail 4 or the vehicle floor, and is configured at its upper end as an arcuate toothed plate 501 with an arcuate toothed row that substantially occupies the entire outer circumference of the arcuate toothed plate 501. The front tube 206 of the seat cushion 2 passes through the hole 2031 in the side plate 203 and the center hole 5011 in the toothed plate 501, thereby allowing the seat cushion 2 to pivot relative to the front support member 5 about the front tube 206 as a rotation axis. Figure 25a The enlarged lower left-hand side view shows the motor assembly 205 from the inside. The motor assembly 205 is secured to the side panel 203 via a motor mounting bracket 207 and a motor fixing bracket 208 (e.g., bolts), such that the output gear 2051 of the motor assembly 205 meshes with the gear plate 501. In the designed position, the output gear 2051 meshes with the rear end of the tooth row of the gear plate 501. As it rotates, the output gear 2051 climbs forward on the tooth row, thereby driving the side panel 203 and the entire seat cushion 2 to pivot forward about the front support 5.

[0229] An arcuate stopper slot 2052 is provided concentrically with the tooth row on the tooth plate 501, and a corresponding stopper pin 2033 is fixed to the side plate 203. As the seat cushion 2 pivots, the stopper pin slides within the stopper slot 2052. In the designed position of the seat cushion 2, the stopper pin 2033 abuts against the rear end of the stopper slot 2052, securing the seat. When the seat cushion 2 pivots forward to a position where its B surface is level, the stopper pin 2033 abuts against the front end of the stopper slot 2052, securing the seat.

[0230] In order to support the seat cushion 2 at the rear end in the design position, a support portion can be provided on the rear end of the seat cushion 2, which can be, for example, a combination of a plastic support nail 210 and a support bolt 211, and a corresponding matching support portion can be provided on the rear support member 6, which can be, for example, a seat cushion support bracket 7 fixed to the rear support member 6. The rear support member 6 is fixed to the vehicle floor or the slide rail 4 like the front support member 5. Figure 25aThe upper left partial enlarged view shows the support of the support part on the mating support part.

[0231] In some embodiments, the seat cushion drive system may also be configured as a combination of a recliner and a motor assembly, instead of the combination of the toothed plate 501 and the motor assembly 205. For example, the recliner is provided at the hinged portion of the seat cushion 2 and the front support 5, and the motor assembly is used to drive the recliner to pivot the seat cushion 2.

[0232] In some embodiments, see Figure 26 Instead of combining the toothed plate 501 with the motor assembly 205, the seat cushion drive system can also be configured as a combination of a double toothed plate and a push rod motor assembly. Here, the side plate 203 and the driven gear 2037 (serving as the first toothed plate) are rotatably supported on the front support 5 via a common rotating shaft (e.g., the front tube 206), and the side plate 203 and the driven gear 2037 are non-rotatably connected to the rotating shaft. A driving toothed plate 230 (serving as the second toothed plate) cooperates with the driven gear 2037. The driving toothed plate 230 is pivotally fixed at its lower end to the slide rail 4 or the vehicle floor and meshes with the driven gear 2037 at its upper end. The push rod motor assembly 220 can be hingedly connected to the slide rail 4 or the vehicle floor on its motor side and hingedly connected to the driving toothed plate 230 on its push rod side. Therefore, the extension and retraction of the push rod of the push rod motor assembly 220 can drive the active gear plate 230 to swing, and the swing of the active gear plate 230 can drive the rotation of the driven gear 2037, and the rotation of the driven gear 2037 drives the seat cushion 2 to pivot.

[0233] Figure 27a A schematic diagram shows a vehicle seat 1 of a third embodiment in a design position, wherein both the seat cushion 2 and the seat back 3 are in the design position. Figure 27b A schematic principle diagram shows a vehicle seat 1 of a third exemplary embodiment in a design position, wherein both the backrest drive 301 and the seat cushion drive 201 are in the design position.

[0234] Figure 28 Shown with Figure 7 For an alternative embodiment of the same backrest transmission mechanism 301 shown, reference may be made to Figure 7 The description of Figure 28 It can be seen that the alternative embodiment of the backrest transmission mechanism 301 can be used in combination with the seat cushion transmission mechanism 201 in the third embodiment.

[0235] Figure 29a A schematic diagram of the vehicle seat 1 of the third embodiment is shown in the “large trunk” position, with the B-sides of the seat cushion 2 and the seat back 3 facing upwards and lying in the same plane with each other. Figure 29bA schematic principle diagram of a vehicle seat 1 of a third embodiment is shown in the “large luggage compartment” position.

[0236] In order to move the vehicle seat 1 from the design position to the "large luggage compartment" position, the seat back 3 and the seat cushion 2 are pivoted to their B-side-up flattened positions by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0237] Adjust the position of the seat cushion 2: The output gear 2051 of the motor assembly 205 climbs forward on the tooth plate 501, driving the seat cushion 2 to pivot forward around the front support 5 until the seat cushion 2 (after pivoting more than 180°) has side B facing upward and flush with the horizontal plane.

[0238] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest driver 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B surface of the seat back 3 faces upward and is flush with the B surface of the seat cushion 2 and is on the same horizontal plane.

[0239] Figure 30a A schematic diagram of the vehicle seat 1 of the third embodiment is shown in the “bed” position, with the A-sides of the seat cushion 2 and seat back 3 facing upwards and lying in the same plane with each other. Figure 30b A schematic principle diagram shows a vehicle seat 1 of a third embodiment in the “bed” position.

[0240] In order to move the vehicle seat 1 from the design position to the "bed" position, the seat back 3 and the seat cushion 2 are pivoted to their A-side-up flat position by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0241] For the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest drive 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted backward by the second backrest drive 303 (here the upper end recliner) until the A surface of the seat back 3 is facing upward and is on a horizontal plane or a plane near the horizontal plane (that is, here including the horizontal plane and a plane that deviates from the horizontal plane at a small angle and is still comfortable to lie on).

[0242] Regarding the seat cushion 2: The output gear 2051 of the motor assembly 205 climbs forward on the gear plate 501, driving the seat cushion 2 to pivot forward about the front support 5 until the surface A of the seat cushion 2 faces upward and is flush with the "bed-like" plane of the backrest. Here, the seat cushion 2 pivots only a small angle, raising the rear end of the seat cushion 2 to be flush with the "bed-like" plane of the backrest. As a result, the surface A of the seat cushion 2 is horizontal and flush with the surface A of the seat back 3, which is on or near the horizontal plane.

[0243] Figure 31a A schematic diagram of the vehicle seat 1 of the third embodiment is shown in the “tray” position, with the B-side of the seat back 3 facing upwards and horizontal. Figure 31b A schematic principle diagram shows a vehicle seat 1 of a third embodiment in the “tray” position.

[0244] In order to move the vehicle seat 1 from the design position to the "small table" position, the seat back 3 is pivoted to its flat position with the B side facing upwards by means of the backrest transmission mechanism 301, while the seat cushion 2 can remain stationary.

[0245] For the seat back 3: first, the seat back 3 is pivoted forward by an angle (about 40°) through the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the backrest transmission mechanism 301 is pivoted forward together with the seat back 3 through the first backrest driver 302 (here the lower end recliner) to the movable end of the backrest transmission mechanism 301 to reach the required height position of the seat back 3, i.e., the "small table"; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B side of the seat back 3 is facing upward and is on a horizontal plane.

[0246] For seat cushion 2: Leave it in place.

[0247] Figure 32a A schematic diagram shows a vehicle seat 1 of a third embodiment in the “folded backrest” position, wherein the A-surface of the seat back 3 and the A-surface of the seat cushion 2 are in zero contact with one another. Figure 32b A schematic principle illustration of a vehicle seat 1 of a third embodiment is shown in the “folded backrest” position.

[0248] In order to move the vehicle seat 1 from the design position to the "backrest folded" position, the seat back 3 is pivoted against the seat cushion 2 by means of the backrest drive 301, while the seat cushion 2 remains stationary.

[0249] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward (for example, about 20°) together with the seat back 3 by the first backrest driver 302 (here the lower end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the A surface of the seat back 3 and the A surface of the seat cushion 2 are in contact with each other or are in zero contact.

[0250] Figure 33a A schematic diagram shows a vehicle seat 1 of a third embodiment in a “large recline” position, wherein the A-surfaces of the seat cushion 2 and the seat back 3 are both facing upwards and forming an obtuse angle with respect to one another. Figure 33b A schematic principle diagram shows a vehicle seat 1 of a third embodiment in the “recline” position.

[0251] In order to move the vehicle seat 1 from the design position to the "large reclining" position, the seat back 3 is pivoted to a state where it forms an obtuse angle with the seat cushion 2 by means of the backrest transmission mechanism 301, while the seat cushion 2 remains stationary.

[0252] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 and the seat back 3 are pivoted backward (for example, about 30°) through the first backrest drive 302 (here the lower end recliner); then, the seat back 3 is pivoted backward to the desired maximum reclining angle through the second backrest drive 303 (here the upper end recliner).

[0253] Figure 34a A schematic diagram shows a vehicle seat 1 of a third embodiment in the “fishing” position. Figure 34b A schematic principle diagram shows a vehicle seat 1 of a third embodiment in the “fishing” position.

[0254] In order to move the vehicle seat 1 from the design position to the "fishing" position, the seat back 3 and the seat cushion 2 are pivoted by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0255] Adjust the position of the seat back 3: first, the seat back 3 is pivoted backward by an angle (about 60°) by the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is moved forward by the first backrest driver 302 (here the lower end recliner) via the backrest transmission mechanism 301 until its lower end passes over the front end of the seat cushion 2; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) (about 100°) so that the B surface of the seat back 3 is suitable as a backrest surface for the "fisherman".

[0256] Adjust the position of the seat cushion 2: The output gear 2051 of the motor assembly 205 climbs forward on the tooth plate 501, driving the seat cushion 2 to pivot forward around the front support 5 by a small angle (for example, about 25°), so that the seat cushion 2 is suitable for supporting the buttocks of the "fisherman".

[0257] See also Figure 35a and 35b , shows a vehicle seat 1 according to a fourth embodiment of the present invention, wherein Figure 35a The vehicle seat 1 is shown with its outer covering removed to reveal its inner frame, and is in its initial design position for a passenger to sit. It can be seen that the seat drive system of the vehicle seat 1 of the fourth embodiment of the present invention includes a backrest drive system for the seat back 3 and a seat cushion drive system for the seat cushion 2. Figure 35b An exploded view of the seat cushion 2 and the cushion drive system is shown.

[0258] In the fourth embodiment, the backrest transmission mechanism 301 adopts the backrest transmission mechanism 301 in the first embodiment (including alternative implementations), and reference may be made to the description of the first embodiment, which will not be repeated here.

[0259] The fourth embodiment is designed similarly to the third embodiment, and only the differences between the two are described here. For the same parts, reference can be made to the third embodiment. Figure 35a and 35b As shown, the front support member 5 is pivotally connected to the slide rail 4 or the vehicle floor via the additional support member 10, that is, the front support member 5 is pivotally connected to the additional support member 10, and the additional support member 10 is fixed to the slide rail 4 or the vehicle floor. In addition, a push rod motor assembly 220 is added to the front support member 5. The push rod motor assembly 220 can be hingedly connected to the slide rail 4 or the vehicle floor with its motor side, and hingedly connected to the front support member 5 with its push rod side. The front support member 5 can be pushed to swing relative to the additional support member 10 by the extension and contraction of the push rod 2201 of the push rod motor assembly 220. Therefore, compared with the third embodiment, the function of adjusting the front end of the seat cushion 2 in the X direction and the Z direction by the swinging of the front support member 5 is added. For other features, please refer to the description of the third embodiment and will not be repeated here.

[0260] In some embodiments, instead of the push rod motor assembly 220 driving the front support 5 to swing, a combination of a toothed plate and a motor assembly or a combination of an angle adjuster and a motor assembly can be provided at the hinge portion between the front support 5 and the additional support 10 to realize the swing drive of the front support 5.

[0261] Figure 36aA schematic diagram shows a vehicle seat 1 of a fourth embodiment in the design position, wherein both the seat cushion 2 and the seat back 3 are in the design position. Figure 36b A schematic principle diagram shows a vehicle seat 1 of a fourth exemplary embodiment in a design position, wherein both the backrest drive 301 and the seat cushion drive 201 are in the design position.

[0262] Figure 37 Shown with Figure 7 For an alternative embodiment of the same backrest transmission mechanism 301 shown, reference may be made to Figure 7 The description of Figure 37 It can be seen that the alternative embodiment of the backrest transmission mechanism 301 can be used in combination with the seat cushion transmission mechanism 201 in the fourth embodiment.

[0263] Figure 38a A schematic diagram of a vehicle seat 1 of a fourth embodiment is shown in a “large trunk” position, with the B-sides of the seat cushion 2 and seat back 3 facing upwards and lying in the same plane with each other. Figure 38b A schematic principle diagram of a vehicle seat 1 of a fourth embodiment is shown in the “large luggage compartment” position.

[0264] In order to move the vehicle seat 1 from the design position to the "large luggage compartment" position, the seat back 3 and the seat cushion 2 are pivoted to their B-side-up flattened positions by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0265] Adjust the position of the seat cushion 2: the output gear 2051 of the motor assembly 205 climbs forward on the tooth plate 501, driving the seat cushion 2 to pivot forward around the front support 5 until the seat cushion 2 pivots more than 180°, for example, about 200° and the B side of the seat cushion 2 tilts downward and forward; then the front support 5 is driven to swing backward by the push rod 2201 of the push rod motor 220, so that the B side of the seat cushion 2 faces upward and is flush with the horizontal plane.

[0266] Here, by adjusting the front end of the seat cushion 2 in the X and Z directions by the push rod motor 220, the Z-direction height of the B surface of the seat cushion 2 is lowered, thereby providing more space for the "large luggage compartment" position. Furthermore, by adjusting the front end of the seat cushion 2 in the X and Z directions by the push rod motor 220, the X-direction spacing between the seat cushion 2 and the seat back 3 can also be reduced in the "large luggage compartment" position.

[0267] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest driver 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is flush with the hinge part of the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B surface of the seat back 3 faces upward and is flush with the B surface of the seat cushion 2 and is on the same horizontal plane.

[0268] Figure 39a A schematic diagram of a vehicle seat 1 of a fourth embodiment is shown in a “bed” position, with the A-sides of the seat cushion 2 and seat back 3 facing upwards and lying in the same plane with each other. Figure 39b A schematic principle diagram shows a vehicle seat 1 of a fourth embodiment in the “bed” position.

[0269] In order to move the vehicle seat 1 from the design position to the "bed" position, the seat back 3 and the seat cushion 2 are pivoted to their A-side-up flat position by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0270] For the seat back 3: First, the backrest transmission mechanism 301 is pivoted backward together with the seat back 3 by the first backrest drive 302 (here the lower end recliner), so that the hinge part at the movable end of the backrest transmission mechanism 301 (here also the rotation center of the upper end recliner) is lower than the hinge part between the seat cushion 2 and the front support 5 (here also the rotation center of the seat cushion 2 around the front support 5); then, the seat back 3 is pivoted backward by the second backrest drive 303 (here the upper end recliner) until the A surface of the seat back 3 is facing upward and is on a horizontal plane or a plane near the horizontal plane (that is, here including the horizontal plane and a plane that deviates from the horizontal plane at a small angle and is still comfortable to lie on).

[0271] Regarding the seat cushion 2: First, the output gear 2051 of the motor assembly 205 climbs forward on the gear plate 501, driving the seat cushion 2 to pivot forward a small angle around the front support 5. At this time, the surface B of the seat cushion 2 is still tilted backward and downward. Then, the push rod 2201 of the push rod motor 220 swings the front support 5 backward, so that the surface A of the seat cushion 2 is flush with the surface A of the seat back 3. This also reduces the distance between the seat cushion 2 and the seat back 3 in the X direction.

[0272] Here, the push rod motor 220 adjusts the front end of the seat cushion 2 in both the X and Z directions, lowering the Z-direction height of the B-side of the seat cushion 2, thereby providing greater accommodation space above the "bed." Furthermore, the push rod motor 220's adjustment of the front end of the seat cushion 2 in both the X and Z directions can also reduce the X-direction spacing between the seat cushion 2 and the seat back 3 in the "bed" position.

[0273] Figure 40a A schematic diagram of the vehicle seat 1 of the fourth embodiment is shown in the “tray” position, with the B-side of the seat back 3 facing upwards and horizontal. Figure 40b A schematic principle diagram shows a vehicle seat 1 of a fourth embodiment in the “tray” position.

[0274] In order to move the vehicle seat 1 from the design position to the "small table" position, the seat back 3 is pivoted to its flat position with the B side facing upwards by means of the backrest transmission mechanism 301, while the seat cushion 2 can remain stationary.

[0275] For the seat back 3: first, the seat back 3 is pivoted forward by an angle (about 40°) through the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the backrest transmission mechanism 301 is pivoted forward together with the seat back 3 through the first backrest driver 302 (here the lower end recliner) to the movable end of the backrest transmission mechanism 301 to reach the required height position of the seat back 3, i.e., the "small table"; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) until the B side of the seat back 3 is facing upward and is on a horizontal plane.

[0276] For seat cushion 2: Leave it in place.

[0277] Figure 41a A schematic diagram shows a vehicle seat 1 of a fourth embodiment in the “backrest folded” position, in which the A-surface of the seat back 3 and the A-surface of the seat cushion 2 are in zero contact with one another. Figure 41b A schematic principle illustration of a vehicle seat 1 of a fourth embodiment is shown in the “folded backrest” position.

[0278] In order to move the vehicle seat 1 from the design position to the "backrest folded" position, the seat back 3 and the seat cushion 2 are pivoted against each other by means of the backrest drive 301 and the seat cushion drive 201. For this purpose,

[0279] Adjust the position of the seat cushion 2: In order to avoid interference during movement, before adjusting the seat cushion 2, the seat back 3 is first pivoted forward (for example, about 30°) through the first backrest driver 302 (here is the lower end adjuster) via the backrest transmission mechanism 301, and then the seat cushion 2 is moved forward on the tooth plate 501 through the output gear 2051 of the motor assembly 205, driving the seat cushion 2 to pivot forward a small angle around the front support 5, and then the front support 5 is driven to swing backward by an angle through the push rod 2201 of the push rod motor 220; so that the Z-direction height of the seat cushion 2 is reduced as much as possible.

[0280] Adjust the position of the seat back 3: First, the seat back 3 is pivoted backward (for example, about 50°, including the 30° forward pivoting of the seat back 3 before the seat cushion 2 moves) via the backrest transmission mechanism 301 through the first backrest driver 302 (here the lower end recliner); then, the seat back 3 is pivoted forward through the second backrest driver 303 (here the upper end recliner) until the A surface of the seat back 3 and the A surface of the seat cushion 2 are in contact with each other or are completely in contact.

[0281] Figure 42a A schematic diagram shows a vehicle seat 1 of a fourth embodiment in a “large recline” position, wherein the A-surfaces of the seat cushion 2 and the seat back 3 are both facing upwards and forming an obtuse angle with respect to one another. Figure 42b A schematic principle diagram shows a vehicle seat 1 of a fourth embodiment in the “recline” position.

[0282] In order to move the vehicle seat 1 from the design position to the "large reclining" position, the seat back 3 is pivoted to a state where it forms an obtuse angle with the seat cushion 2 by means of the backrest transmission mechanism 301, while the seat cushion 2 remains stationary.

[0283] Adjust the position of the seat back 3: First, the backrest transmission mechanism 301 and the seat back 3 are pivoted backward (for example, about 30°) through the first backrest drive 302 (here the lower end recliner); then, the seat back 3 is pivoted backward to the desired maximum reclining angle through the second backrest drive 303 (here the upper end recliner).

[0284] Figure 43a A schematic diagram shows a vehicle seat 1 of a fourth embodiment in the “fishing” position. Figure 43b A schematic principle diagram of a vehicle seat 1 of a fourth embodiment is shown in the “fishing” position.

[0285] In order to move the vehicle seat 1 from the design position to the "fishing" position, the seat back 3 and the seat cushion 2 are pivoted by means of the backrest transmission mechanism 301 and the seat cushion transmission mechanism 201, respectively.

[0286] Adjust the position of the seat back 3: first, the seat back 3 is pivoted backward by an angle (about 60°) by the second backrest driver 303 (here the upper end recliner) to prevent interference with the seat cushion 2 when the seat back 3 is subsequently moved forward; then, the seat back 3 is moved forward by the first backrest driver 302 (here the lower end recliner) via the backrest transmission mechanism 301 until its lower end passes over the front end of the seat cushion 2; finally, the seat back 3 is pivoted forward by the second backrest driver 303 (here the upper end recliner) (about 100°) so that the B surface of the seat back 3 is suitable as a backrest surface for the "fisherman".

[0287] Adjust the position of the seat cushion 2: The output gear 2051 of the motor assembly 205 climbs forward on the tooth plate 501, driving the seat cushion 2 to pivot forward around the front support 5 by a small angle (for example, about 25°), so that the seat cushion 2 is suitable for supporting the buttocks of the "fisherman".

[0288] 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, comprising: seat cushions; seat backs; and a seat drive system configured to move the seat cushion and the seat back to enable the vehicle seat to be moved from a design position to another position, in which the seat cushion and the seat back each have a side A facing toward an occupant and a side B facing away from the occupant, The seat drive system includes a seat back drive system for the seat back and a seat cushion drive system for the seat cushion, wherein the seat back drive system and the seat cushion drive system are configured to be driven independently of each other. The backrest drive system includes a backrest transmission mechanism, the backrest transmission mechanism includes a restraining end and a movable end, the backrest transmission mechanism is configured to be pivotable around a pivot portion provided at the restraining end, and the seat back is pivotally connected to the movable end of the backrest transmission mechanism so that the seat back can pivot relative to the backrest transmission mechanism around the pivot portion provided at the movable end. Wherein, the seat cushion is pivotally supported at its front end by a front support member around a pivot portion between the seat cushion and the front support member, wherein, driven by the seat cushion drive system, the seat cushion can pivot forward around the pivot portion between the seat cushion and the front support member beyond the vertical position of the seat cushion to a position where the B surface of the seat cushion is basically horizontal and facing upward, wherein the front support member is mounted on a slide rail or a vehicle floor.

2. The vehicle seat according to claim 1, wherein Driven by the seat drive system, the vehicle seat can enter the "large trunk" position from the design position, in which the seat cushion has entered a position in which its B side is basically horizontally facing upward after passing its vertical position through the drive of the seat cushion drive system, and the seat back has entered a position in which its B side is basically horizontally facing upward through the drive of the backrest drive system, and the B side of the seat cushion and the B side of the seat back are basically on the same horizontal plane to form a accommodating space above.

3. The vehicle seat according to claim 1, wherein Driven by the seat drive system, the vehicle seat can enter the "bed" position from the design position. In the "bed" position, the seat cushion has been driven by the seat cushion drive system to lift the rear end of the seat cushion upward to a position where its A side is basically horizontally facing upward, and the seat back has been driven by the backrest drive system to flip backward to a position where its A side is basically horizontally facing upward, and the A side of the seat cushion and the A side of the seat back are basically on the same horizontal plane, so that the occupant can lie down on the vehicle seat.

4. The vehicle seat according to claim 1, wherein Driven by the seat drive system, the vehicle seat can enter the "small table" position from the design position, in which the seat back has been driven by the backrest drive system to a position where its B side is horizontally facing upward and above the seat cushion.

5. The vehicle seat according to claim 1, wherein Driven by the seat drive system, the vehicle seat can enter a "folded backrest" position from the design position, in which the seat backrest has been driven by the backrest drive system into a position that is basically parallel to the seat cushion and rests against each other with their A surfaces.

6. The vehicle seat according to claim 1, wherein Driven by the seat drive system, the vehicle seat can enter the "lying down" position from the design position, in which the seat backrest has been driven by the backrest drive system to a position where its A surface forms an obtuse angle with the A surface of the seat cushion.

7. The vehicle seat according to claim 1, wherein Driven by the seat drive system, the vehicle seat can enter the "fishing" position from the design position, in which the seat back has been driven by the backrest drive system to move forward to its lower end over the front end of the seat cushion, so that the B side of the seat back constitutes the back rest surface of the occupant, and the seat cushion has been driven by the seat cushion drive system so that the rear end of the seat cushion is lifted upward.

8. The vehicle seat according to claim 1, wherein The seat cushion drive system includes a seat cushion transmission mechanism, which includes a first link and a second link hinged to each other, the first link being hinged to the front support or other support installed on the slide rail or the vehicle floor different from the front support through a hinge portion at its constraint end, the first link being pivotally hinged to the first movable end of the second link through a hinge portion at its movable end, and the second movable end of the second link being pivotally hinged to the seat cushion.

9. The vehicle seat according to claim 8, characterized in that The second movable end of the second link is pivotally hinged in the region of the middle third of the length of the seat cushion.

10. The vehicle seat according to claim 8, wherein In the design position, the hinged connection between the first link and the second link is located behind the hinged connection between the second movable end of the second link and the seat cushion; and / or In the design position, the first link and the second link form an acute angle; and / or the first link and the second link forming an obtuse angle in the upright position of the seat cushion; and / or A distance between a hinge portion at the restraining end of the first link and a hinge portion at the movable end thereof is greater than a distance between a hinge portion between the seat cushion and the front support and a hinge portion between the seat cushion and the second link.

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