Seat and vehicle

Abstract

The invention discloses a seat and a vehicle. The seat comprises a cushion part for a passenger to sit on and a backrest part, the backrest part is installed above the cushion part and can be locked to the cushion part through a locking part so that the passenger can lean on the backrest part, and the cushion part and the backrest part are provided with rotation driving mechanisms so that the backrest part can rotate with the vertical direction as the axis. The seat cushion part and the backrest part are provided with sliding driving mechanisms, so that the backrest part can slide in the front-back direction relative to the seat cushion part. By means of the seat, on the premise that the space and the structure of the vehicle are not greatly changed, the front row of seats are changed from the front row of the vehicle to the rear row of the vehicle, and therefore the interactivity between passengers in the front row and the rear row of the vehicle can be improved, the using scene of the space in the vehicle is increased, and the vehicle using experience of the passengers is improved.

Description

Technical Field

[0001] The present invention relates to a seat and a vehicle, and belongs to the technical field of seats and vehicles. Background Art

[0002] With the continuous development of technology and the improvement of people's living standards, cars are no longer just a means of transportation, but also a major place for users to stay in addition to their homes and offices. Therefore, people have more and more demands on the functions that can be provided by the interior space of the car, such as comfort, entertainment, privacy, interactivity, etc. The design and layout of traditional seats to a certain extent limit the interaction between the front and rear passengers, because the seats are all facing the front of the car. If the front passengers need to interact face-to-face with the rear passengers, they can only rely on turning their bodies backwards to achieve this, which is neither convenient nor can it be maintained for a long time.

[0003] Therefore, in order to solve the interaction problem between the front and rear passengers, the concept of the front seats being able to rotate backwards was proposed. However, due to the limitations of the interior space of most passenger cars (front and rear and left and right), it is difficult to complete a 180-degree rotation of the front seats in situ. Therefore, there are basically no models in mass-produced cars that can achieve this function, or the interior space of the vehicle and the structure of the entire vehicle need to be redefined to make it possible for the front seats to have enough space to rotate backwards. However, this method is not suitable for mainstream models, and the development cost will also be relatively high. Summary of the invention

[0004] The present disclosure proposes a new type of seat structure, which can realize the change of the orientation of the front seats from facing the front side of the vehicle to facing the rear side of the vehicle without making major changes to the space and structure of the vehicle itself, thereby improving the interactivity between the front and rear passengers, increasing the use scenarios of the space inside the vehicle, and improving the vehicle experience of the passengers.

[0005] A first aspect of the present disclosure provides a seat, comprising:

[0006] Seat cushion for passengers: and

[0007] A backrest portion, which is installed above the cushion portion and can be locked to the cushion portion via a locking portion for an occupant to lean on, is characterized in that:

[0008] The seat cushion part and the backrest part are provided with a rotation driving mechanism, so that the backrest part can rotate about the up and down direction as the axis, and

[0009] The seat cushion portion and the backrest portion are provided with a sliding drive mechanism so that the backrest portion can slide relative to the seat cushion portion in a front-rear direction.

[0010] Preferably, in the seat of the first aspect, the rotation drive mechanism comprises:

[0011] A rotating base portion, the rotating base portion is arranged in the cushion portion at the left-right center of the rear end portion of the cushion portion, and a concave ball hole is formed on the upper surface of the rotating base portion;

[0012] a telescopic rod portion, the telescopic rod portion being provided at the left-right center of the lower portion of the backrest portion so as to be opposed to the rotating base portion in the up-down direction, and

[0013] A motor, wherein the motor is arranged above the telescopic rod in the backrest portion and is fixedly connected to the frame of the backrest portion,

[0014] The telescopic rod portion comprises an outer shell and an inner rod, the end of the inner rod is formed in the form of a ball head and can be switched between a storage position and an extended position relative to the outer shell; in the storage position, the inner rod of the telescopic rod portion is stored inside the outer shell; in the extended position, the inner rod of the telescopic rod portion extends outward from the inner side of the outer shell so that the ball head cooperates with the ball hole of the rotating base portion.

[0015] Preferably, in the seat of the first aspect, the ball hole of the rotating base portion is provided with a bushing.

[0016] Preferably, in the seat of the first aspect, the sliding drive mechanism comprises:

[0017] A movable slide groove, which is respectively arranged on two side surfaces of the cushion portion in the left and right directions and extends in the front-back direction;

[0018] A slide bar, the slide bar is arranged on the seat cushion part and extends in the left-right direction, and both ends of the slide bar are respectively mounted in the movable slide groove so as to be able to slide in the front-back direction along the movable slide groove,

[0019] The movable slide groove is provided with a plurality of limiting recesses in the front-to-back direction, and the slide bar can be engaged in the limiting recesses to limit the sliding movement of the slide bar along the movable slide groove in the front-to-back direction, and

[0020] Wherein, the plurality of limiting recesses at least include a front limiting recess and a rear limiting recess located at both ends of the movable slide groove in the front-rear direction.

[0021] Preferably, in the seat of the first aspect, the movable slide groove further comprises a central limiting recessed portion arranged at a central position in the front-rear direction thereof.

[0022] Preferably, in the seat of the first aspect, the limiting recess of the movable slide groove is provided with a gasket.

[0023] Preferably, in the seat of the first aspect, the locking portion for locking the backrest portion and the seat cushion portion to each other comprises:

[0024] A protruding shaft, wherein the protruding shaft is respectively arranged at two side surfaces of the backrest in the left and right directions at the lower end of the backrest, so as to protrude outward from each side surface in the left and right directions;

[0025] The buckle part is substantially rectangular in shape and has a through hole at one end in the length direction for the protruding shaft to be inserted, and the buckle part is also provided with a long hole extending in the length direction, and the end of the slide rod can be inserted into and fitted into the long hole,

[0026] Wherein, a first latch is arranged between the protruding shaft and the through hole of the buckle part, and the first latch comprises: a first groove recessed inwardly from both ends of the protruding shaft in the diameter direction, a first compression spring arranged on the bottom surface of each first groove, a first limit block connected to the end of each first compression spring and capable of being completely accommodated in each first groove when each first compression spring is compressed, and a first opposing groove recessed inwardly from the through hole of the buckle part and arranged opposite to each first groove, when the compression of the first compression spring is released, the first limit block is located in both the first groove and the first opposing groove, and

[0027] In which, a second lock is arranged between the end of the sliding rod and the long hole of the buckle part, and the second lock includes: a second groove recessed inwardly from both ends in the diameter direction of the end of the sliding rod, a second compression spring arranged on the bottom surface of each second groove, a second limit block connected to the end of each second compression spring and capable of being completely accommodated in each second groove when each second compression spring is compressed, and a second opposing groove recessed inwardly from the long hole of the buckle part and arranged opposite to each second groove, when the compression of the second compression spring is released, the second limit block is located in both the second groove and the second opposing groove.

[0028] Preferably, in the seat of the first aspect, a through hole is provided at the center of the length direction of the slide bar, and the through hole is aligned with the ball hole of the rotating base part and the inner rod of the telescopic tube part in the up and down directions, so that the inner rod can be embedded in the ball hole through the through hole, and the slide bar is respectively integrally provided with an inner ratchet and an outer ratchet on the left and right sides of the through hole, and an inner ratchet and an outer ratchet are correspondingly provided in the cushion part, so that when the slide bar is engaged in the rear end limiting recess, one of the inner ratchet and the outer ratchet engages with the corresponding one of the inner ratchet and the outer ratchet and limits the rotation of the slide bar, and when the slide bar is engaged in the central limiting recess or the front end limiting recess, the other of the inner ratchet and the outer ratchet engages with the corresponding other of the inner ratchet and the outer ratchet and limits the rotation of the slide bar.

[0029] Preferably, in the seat of the first aspect, return springs are respectively provided on the lower sides of the inner ratchet and the outer ratchet.

[0030] Preferably, in the seat of the first aspect, further comprising:

[0031] A pair of guide rails disposed along the front-rear direction inside the cushion portion;

[0032] A U-shaped claw portion slidably disposed at the rear end of the guide rail portion, the claw portion opening upward;

[0033] A link portion extending in the left-right direction at a front end inside the seat cushion portion and disposed between the pair of guide rail portions; and

[0034] A lifting drive unit is provided below the connecting rod unit at least in the center of the extending direction of the connecting rod unit, so that the connecting rod unit has an initial position and a lifted position.

[0035] Wherein, when the connecting rod portion is in the initial position, the claw portion in the guide rail portion does not contact the slide rod, and

[0036] Wherein, when the connecting rod portion is in the lifted position, the claw portion in the guide rail portion is lifted so as to accommodate the sliding rod in the opening of the claw portion.

[0037] Preferably, the seat of the first aspect further includes: a ball portion provided between the claw portion and the guide rail portion.

[0038] Preferably, the seat of the first aspect further includes: a position sensor, which is arranged at a position corresponding to the central limit recess, and when it is detected that the slide rod slides into the central limit recess, a signal is sent to the lifting drive unit to lower the connecting rod part from the lifting position to the initial position.

[0039] A second aspect of the present disclosure provides a vehicle, comprising the seat described in the first aspect.

[0040] According to the seat and the vehicle with the seat disclosed in the present invention, the front and rear direction of the seat can be changed without rotating the seat 180 degrees in situ. The present invention fully considers the existing space and structure of the vehicle, does not require major changes to the vehicle itself, and only provides a rotating drive mechanism and a sliding drive mechanism for the seat, so that the seat direction can be flexibly changed with a simple structure and low cost, thereby improving the interactivity of the front and rear row passengers, increasing the use scenarios of the interior space, and significantly improving the vehicle experience of the passengers, and has excellent applicability and popularity. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0042] Figure 1A is a perspective view of a seat according to an embodiment of the present disclosure;

[0043] Figure 1B yes Figure 1A A perspective stereogram of a seat;

[0044] Figure 2 is a side view of a seat according to an embodiment of the present disclosure;

[0045] Figure 3 is a front view of a seat according to an embodiment of the present disclosure;

[0046] Figure 4 is a rear view of a seat according to an embodiment of the present disclosure;

[0047] Figure 5 is a top view of a seat according to an embodiment of the present disclosure;

[0048] Figure 6 is an AA cross-sectional view of a seat according to an embodiment of the present disclosure;

[0049] Figure 7 is a BB cross-sectional view of the seat of the embodiment of the present disclosure;

[0050] Figure 8 is a CC cross-sectional view of a seat according to an embodiment of the present disclosure;

[0051] Fig. 9 is a DD cross-sectional view of a seat according to an embodiment of the present disclosure;

[0052] Fig.10 is an EE cross-sectional view of a seat according to an embodiment of the present disclosure;

[0053] Fig.11 is an enlarged view of part A of the seat of the disclosed embodiment;

[0054] Fig.12 is a FF cross-sectional view of a seat according to an embodiment of the present disclosure;

[0055] Fig.13 is an enlarged view of part B of the seat of the embodiment of the present disclosure;

[0056] Fig.14A , Fig. 14B and Fig. 14C is a view showing a normal use state of a seat according to an embodiment of the present disclosure, wherein Fig.14A It is a side view; Fig. 14B It is a side perspective view; Fig. 14C It is a stereogram;

[0057] Fig.15A and Fig. 15B is a view showing a rotation start state of a seat according to an embodiment of the present disclosure, wherein Fig.15A It is a side view; Fig. 15B It is a side perspective view;

[0058] Fig.16 is a side view showing a buckle-separated state of the seat of the embodiment of the present disclosure;

[0059] Fig.17A and Fig. 17B is a view showing a rotation completion state of a seat according to an embodiment of the present disclosure, wherein Fig.17A It is a side view; Fig. 17B It is a side perspective view;

[0060] Fig.18A , Fig.18B and Fig.18C 1 is a view showing a sliding start state of a seat according to an embodiment of the present disclosure, wherein Fig.18A It is a side view; Fig.18B It is a side perspective view; Fig.18C It is a stereogram;

[0061] Fig.19A and Fig.19B is a view showing a sliding state of a seat according to an embodiment of the present disclosure, wherein Fig.19A It is a side view; Fig.19B It is a side perspective view;

[0062] Fig. 20A , Fig. 20B and Fig. 20C is a view showing a middle sliding state of a seat according to an embodiment of the present disclosure, wherein Fig. 20A It is a side view; Fig. 20B It is a side perspective view; Fig. 20C It is a stereogram;

[0063] Fig.21A , Fig. 21B and Fig. 21C is a view showing a sliding completion state of a seat according to an embodiment of the present disclosure, wherein Fig.21A It is a side view; Fig. 21B It is a side perspective view; Fig. 21C It is a stereogram.

[0064] Reference numerals list

[0065] 1 Seat

[0066] 2 Backrest rotation button

[0067] 3 Slide bar lift button

[0068] 10. Cushion

[0069] 11 Seat frame

[0070] 12 internal ratchet

[0071] 13 External ratchet

[0072] 14 Return spring

[0073] 15 Guide rail

[0074] 16 Connecting rod

[0075] 17 claw part

[0076] 18 Lifting drive unit

[0077] 19 Ball bearing

[0078] 20 Backrest

[0079] 21 Backrest frame

[0080] 22 Connecting rod

[0081] 30 Rotation drive mechanism

[0082] 31 Rotating base

[0083] 32 ball holes

[0084] 33 Bushing

[0085] 34 telescopic rod

[0086] 35 Shell

[0087] 36 inner rod

[0088] 37 Spring

[0089] 40 Sliding drive mechanism

[0090] 41 mobile chute

[0091] 42 limit recess

[0092] 42A front end limit recess

[0093] 42B rear end limit recess

[0094] 42C central limit recess

[0095] 43 Gasket

[0096] 44 Sliders

[0097] 45 through holes

[0098] 46 Internal ratchet

[0099] 47 External ratchet

[0100] 50 Locking part

[0101] 51 protruding axis

[0102] 52 buckle part

[0103] 53 through holes

[0104] 54 Long hole

[0105] 55 First Card Lock

[0106] 55A first groove

[0107] 55B first compression spring

[0108] 55C first limit block

[0109] 55D first opposing groove

[0110] 56 Second card lock

[0111] 56A Second groove

[0112] 56B Second compression spring

[0113] 56C second limit block

[0114] 56D second opposing groove

[0115] 60 Position Sensor DETAILED DESCRIPTION

[0116] Hereinafter, the technical solution of the present invention will be more clearly illustrated by describing specific embodiments of the present invention with reference to the accompanying drawings.

[0117] It should be noted that the drawings of the present invention are only schematic diagrams for the purpose of clearly showing the parts related to the scheme of the present invention, and some non-essential parts that may exist are not shown. Therefore, these drawings should not be understood as limiting the present invention, and they may be different from the actual structure when used. In addition, it should be understood that the terms "up", "down", "left", "right", "front", "rear", etc. that may appear in the following description to indicate the orientation or position are for the purpose of convenience of explanation and are not restrictive. In this embodiment, the up and down directions, left and right directions, and front and back directions are described in accordance with the up and down directions, left and right directions, and front and back directions of the vehicle. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0118] In this embodiment, the seat 1 is described by taking a vehicle seat installed in a vehicle as an example. However, this is not restrictive, and the seat 1 can also be installed on other products with scene requirements of front and rear switching, such as airplanes, trains, theaters, conference rooms, etc.

[0119] As shown in Figure 1~ Fig.13 As shown, the seat 1 comprises: a cushion portion 10 for the passenger to sit on; and a backrest portion 20, which is installed above the cushion portion 10 and can be locked to the cushion portion 10 via a locking portion for the passenger to lean on. In normal use, the backrest portion 20 is located at the rear end of the cushion portion 10 to meet the normal forward sitting posture.

[0120] The locking portion for locking the backrest portion 20 to the cushion portion 10 can be achieved by the first lock 55 and the second lock 56 between the buckle portion 52 and the slide rod 44 and the locking between the ratchet wheels 46, 47 and the ratchet teeth 12, 13 described later. Moreover, through the locking between the ratchet wheels 46, 47 and the ratchet teeth 12, 13, the inclination angle of the backrest portion 20 can also be adjusted to meet the personalized requirements of the passengers, thereby improving the riding comfort.

[0121] Unlike conventional seats, in the seat 1 of the present embodiment, the seat cushion portion 10 and the backrest portion 20 are provided with a rotating drive mechanism 30 so that the backrest portion 20 can rotate about the up and down directions, and the seat cushion portion 10 and the backrest portion 20 are provided with a sliding drive mechanism 40 so that the backrest portion 20 can slide relative to the seat cushion portion 10 in the front and rear directions of the vehicle.

[0122] In this embodiment, by providing the seat 1 with a rotating drive mechanism 30 and a sliding drive mechanism 40, the seat orientation can be flexibly changed with a simple structure and at a low cost without making major changes to the vehicle itself and without rotating the seat 180 degrees in situ, thereby improving the interactivity between the front and rear row passengers, increasing the use scenarios of the interior space, and significantly improving the vehicle experience of the passengers, and having excellent applicability and popularity.

[0123] Next, the rotation drive mechanism 30 and the slide drive mechanism 40 of the seat 1 will be described in detail.

[0124] First, the rotation drive mechanism 30 will be described.

[0125] As shown in Figure 1~ Fig.13 As shown, the rotation drive mechanism 30 of the seat 1 may include: a rotating base portion 31, which is arranged in the seat cushion portion 10 at the left-right center of the rear end portion of the seat cushion portion 10, and a recessed ball hole 32 is formed on the upper surface of the rotating base portion 31; a telescopic rod portion 34, which is arranged at the left-right center of the lower part of the backrest portion 20 to be opposite to the rotating base portion 31 in the up and down direction, and a motor 39, which is arranged in the backrest portion 20 above the telescopic rod portion 34 and fixedly connected to the backrest frame 21 of the backrest portion 20.

[0126] like Figure 6 , Fig.12 , Fig.13 As shown in FIG. 1 , the telescopic rod portion 34 of the rotary drive mechanism 30 includes a housing 35 and an inner rod 36. The end of the inner rod 36 is formed in the form of a ball head 37 and can be in a storage position relative to the housing 35 (see FIG. 1 ). Fig. 14B ) and extended position (see Fig. 15B ); in the storage position, the inner rod 36 of the telescopic rod portion 34 is stored in the inner side of the outer shell 35; in the extended position, the inner rod 36 of the telescopic rod 34 extends outward from the inner side of the outer shell 35 so that the ball head 37 at the end of the inner rod 36 cooperates with the ball hole 32 of the rotating base portion 31.

[0127] In this embodiment, for the telescopic rod portion 34, a spring 38 may be provided to achieve the switching of the inner rod 36 between the storage position and the extended position relative to the housing 35. The spring 38 is connected between the upper end of the inner rod 36 and the inner surface of the upper side of the housing 35, so that in the normal use state of the seat, the spring 38 is in a compressed state and accumulates spring force. When it is desired to rotate the backrest 20, the spring 38 is released from the compressed state, so that the inner rod 36 is switched from the storage position to the extended position under the action of the spring force of the spring 38. The spring 38 may be an electromagnetic spring, and the above-mentioned compressed state and the release of the compressed state are achieved by whether or not the power is turned on.

[0128] In addition, in order to reduce wear between parts and facilitate adjustment of assembly accuracy, such as Fig.13 As shown, a bushing 33 may be further provided on the surface of the ball hole 32 of the rotating base portion 31 .

[0129] The motor 39 of the rotary drive mechanism 30 is fixedly connected and supported on the backrest frame 21 of the backrest portion 20 of the seat 1 through the connecting rod 22, and the output shaft of the motor 39 is integrally connected with the telescopic rod portion 34, so that when the motor 39 is activated, the motor 39 outputs torque to drive the inner rod 36 of the telescopic rod portion 34 to rotate around the bearing structure formed by the ball head 37 at its lower end and the rotating base portion 31. Since the motor 39 is fixed through the connecting rod 32 and the backrest frame 21, the backrest portion 20 of the seat 1 will be driven to rotate at the same time.

[0130] In order to accommodate the rotation drive mechanism 30, an opening 11A is formed at the left-right center position of the rear end of the seat cushion frame 11 of the seat cushion portion 10 of the seat 1 (see Figure 6 , Fig.12 ) and a through hole 45 is formed at the left-right center position of the slide bar 44 described later (see Fig.13 When the inner rod 36 of the telescopic rod portion 34 of the rotation drive mechanism 30 is switched to the extended position, the inner rod 36 can pass through the opening 11A and the through hole 45 so that the ball head 37 is engaged and snapped into the ball hole 32 of the rotating base portion 31, thereby forming a rotating bearing structure with the snapped ball head 37, the rotating base portion 31 and the bushing 33.

[0131] Next, the slide drive mechanism 40 is described.

[0132] like Figure 1B , Figure 2-Figure 8 As shown in FIG. 1 and FIG. 2 , the sliding drive mechanism 40 of the seat 1 of the present embodiment may include: a movable slide groove 41, which is respectively arranged on two side surfaces in the left-right direction of the seat frame 11 of the seat cushion portion 10 and extends in the front-to-back direction; a slide rod 44, which is arranged on the seat cushion portion 10 and extends in the left-to-right direction, and the two ends of the slide rod 44 are respectively mounted in the movable slide groove 41, so that it can slide in the front-to-back direction along the movable slide groove 41. In other words, the slide rod 44 spans the movable slide grooves 41 on the left and right sides, and the two ends are inserted into the movable slide grooves 41. The length of the slide rod 44 is slightly longer than the width of the seat frame 11 of the seat cushion 10 in the left-to-right direction, so that the two end portions of the slide rod 44 can be exposed outward from the movable slide groove 41, and the exposed portion can be assembled to the buckle portion 52 described later.

[0133] like Figure 1B , Figure 2 , Fig.19AAs shown in the figures, the movable slide groove 41 is provided with a plurality of limiting recesses 42 in the front-to-back direction. In the present embodiment, there are three limiting recesses 42, namely, a front limiting recess 42A and a rear limiting recess 42B provided at both ends of the movable slide groove 41 in the front-to-back direction, and a central limiting recess 42B provided at the central position in the front-to-back direction of the movable slide groove 41. The limiting recess 42 may have an arc shape, which is consistent with the surface shape of the slide bar 44, so that the lower part of the slide bar 44 can be engaged in the limiting recess 42, limiting the sliding movement of the slide bar 44 along the movable slide groove 41 in the front-to-back direction.

[0134] In addition, in order to reduce wear between parts and facilitate adjustment of assembly accuracy, such as Fig. 9 As shown, a gasket 43 may be provided on the surface of each limiting recess 42 of the movable slide groove 41 .

[0135] The rotation drive mechanism 30 and the slide drive mechanism 40 of the seat 1 of the present embodiment have been described above. Next, other structures will be described.

[0136] like Figure 1A , Figure 2 , Fig. 9 As shown in the figure, in the seat 1 of this embodiment, the locking portion for locking the backrest portion 20 and the cushion portion 10 with each other may include: a protruding shaft 51, which is respectively arranged on the two side surfaces in the left and right directions of the backrest portion 20 at the lower end of the backrest portion 20, so as to protrude outward from each of the side surfaces along the left and right directions respectively; a buckle portion 52, which is roughly rectangular in shape and has a through hole 53 at one end in the length direction for inserting the protruding shaft 51, and the buckle portion 52 is also provided with a long hole 54 extending in the length direction, and the end of the sliding rod 44 can be inserted into and fitted into the end of the long hole 54.

[0137] See also Fig. 9 A first latch 55 is provided between the protruding shaft 51 and the through hole 53 of the buckle portion 52. The first latch 55 includes: first grooves 55A that are recessed inward from both ends of the protruding shaft 51 in the diameter direction, first compression springs 55B that are provided on the bottom surface of each first groove 55A, first stoppers 55C that are connected to the ends of each first compression spring 55B and can be completely accommodated in each first groove 55A when each first compression spring 55B is compressed, and first opposing grooves 55D that are recessed inward from the through hole 53 of the buckle portion 52 and are provided opposite to each first groove 55A. When the compression of the first compression spring is released ( Fig. 9 As shown in FIG. 5 , the first limit block 55D is located in both the first groove 55A and the first opposing groove 55D, so that the upper end of the buckle portion 52 is locked to the protruding shaft 51 of the backrest portion 20 .

[0138] Still see Fig. 9A second latch 56 is provided between the end of the slide bar 44 and the long hole 54 of the buckle portion 52, and the second latch 56 includes: a second groove 56A recessed inwardly from both ends of the end of the slide bar 44 in the diameter direction, a second compression spring 56B provided on the bottom surface of each second groove, a second stopper 56C connected to the end of each second compression spring 56B and capable of being completely received in each second groove 56A when each second compression spring 56B is compressed, and a second opposing groove 56D recessed inwardly from the long hole 54 of the buckle portion 52 and provided opposite to each second groove 56A. When the compression of the second compression spring 56B is released, the second stopper 56C is located in both the second groove 56A and the second opposing groove 56D, so that the buckle portion 52 is locked to the slide bar 44 in the cushion portion 10.

[0139] As described above, by providing the buckle portion 52 and the corresponding first latch 55 and second latch 56, the backrest portion 20 can be locked to the cushion portion 10, so that the backrest portion 20 can stably support the occupant. The first compression spring of the first latch 55 and the second compression spring of the second latch 56 can both be electromagnetic springs or electromagnetically controlled, and expand and contract in response to a power-on signal.

[0140] like Figure 1B , Figure 6-Figure 8 , Figure 11-13 As shown in FIG. 1 , the locking portion for locking the backrest portion 20 and the cushion portion 10 with each other may also include an engagement between a ratchet wheel and ratchet teeth. The engagement between the ratchet wheel and the ratchet teeth enables the backrest portion 20 to be fixed relative to the cushion portion 10 at a desired angle.

[0141] In this embodiment, as shown in the figure, the slide bar 44 is integrally provided with an inner ratchet 46 and an outer ratchet 47 arranged separately in the left and right directions on the left and right sides of the through hole 45, and the inner ratchet 12 and the outer ratchet 13 are correspondingly provided in the cushion portion 10. When the slide bar 44 is engaged in the rear end limiting recess 42B, one of the inner ratchet 46 and the outer ratchet 47 (in this embodiment, the inner ratchet 46, but not limited thereto) is engaged and locked with a corresponding one of the inner ratchet 12 and the outer ratchet 13 (in this embodiment, the inner ratchet 12, but not limited thereto), and the rotation of the slide bar 44 is limited. When the backrest portion 20 slides, so that the sliding rod 44 inside the backrest portion 20 is engaged in the central limiting recess 42C or the front end limiting recess 42A, the inner ratchet and the other of the outer ratchets (in the present embodiment, the outer ratchet 47, but not limiting) engage with the corresponding other of the inner ratchet and the outer ratchet (in the present embodiment, the outer ratchet 13, but not limiting) to lock and limit the rotation of the sliding rod 44.

[0142] In addition, by changing the teeth that mesh between the ratchet wheel and the ratchet teeth, the angle adjustment of the backrest portion 20 can be achieved, which will be described in detail later.

[0143] In this embodiment, if Figure 6 , Figure 8 As shown in the figure, the lower sides of the inner ratchet 12 and the outer ratchet 13 are respectively provided with a return spring 14. The return spring 14 on the lower side of the inner ratchet 12 can be set to one on each of the left and right sides, and the return spring 14 on the lower side of the outer ratchet 13 can be set to three on each side. The function of the return spring is that when the seat back angle is recovered, it will drive the outer ratchet to rotate in the opposite direction (in the direction of disengaging the ratchet meshing), and the ratchet will push the ratchet to move downward and compress the return spring below. When the recovery action of the seat back angle is stopped, there is no external force to drive the ratchet to rotate in the opposite direction, and the return spring will release the accumulated elastic force, thereby pushing the ratchet to move upward and re-engage with the ratchet.

[0144] In this embodiment, the reason for designing the inner ratchet and the outer ratchet is mainly to realize the angle adjustment function of the seat backrest in different states. The inner ratchet is mainly used when the seat backrest is in normal use, that is, when the seat faces the front of the vehicle, the ratchet and the ratchet teeth need to be engaged to prevent the seat backrest from rotating toward the rear of the vehicle; and when the seat backrest rotates 180 degrees and slides to the required limit groove, the seat direction changes to the rear of the vehicle. At this time, the ratchet and the ratchet teeth need to be engaged to prevent the seat backrest from rotating toward the front of the vehicle. The ratchet and ratchet system is a one-way rotation restriction structure. Therefore, for the above-mentioned scenario where the rotation of the backrest needs to be restricted in the opposite direction, two independent ratchet and ratchet systems are designed.

[0145] See attached Figure 1B , Figure 7 , Fig.11 , Fig.13In this embodiment, the cushion portion 10 of the seat 1 may further include: a pair of guide rails 15 arranged inside the cushion portion 10 along the front-rear direction; a slider 17 slidably arranged at the rear end of the guide rail 15, the upper end of the slider 15 being a U-shaped claw portion 17A with an opening facing upward; a connecting rod portion 16 extending along the left-right direction at the front end inside the cushion portion 10 and arranged between the pair of guide rails 15; and a lifting drive portion 18 arranged below the connecting rod portion 16 at least at the center of the extending direction of the connecting rod portion 16. The lifting drive portion 18 can drive the lifting rod 18A to perform lifting movement in response to the command of the slide bar lifting button 3, so that the connecting rod portion 16 has an initial position and a lifted position due to the lifting of the lifting rod 18A. When the connecting rod portion 16 is in the initial position, the claw portion 17A of the slider 17 in the guide rail portion 15 does not contact the slide bar 44, and, when the connecting rod portion 16 is in the lifted position due to being lifted by the lifting rod 18A, the claw portion 17A of the slider 17 in the guide rail portion 15 abuts against the slide bar 44 due to being lifted and accommodates the slide bar 44 in the opening of the claw portion 17A.

[0146] In this embodiment, a ball portion 19 is provided between the slider 17 and the guide rail portion 15 to improve the sliding efficiency of the slider 17 and reduce wear.

[0147] In the seat 1 of this embodiment, as Figure 7 As shown, it also includes a position sensor 60, which is set at a position corresponding to the central limit recess 42C and the front end limit recess 42A. When it is detected that the slide rod 44 slides to the central limit recess 43C or the front end limit recess 42A, the position sensor sends a signal to the lifting drive part 18 to lower the lifting rod 18A and then lower the connecting rod part 16 from the lifting position to the initial position.

[0148] In addition, if Figure 4 , 5 As shown, in the present embodiment, a backrest rotation button 2 and a slide bar lifting button 3 are provided at the rear end of the seat cushion portion 10 of the seat 1. By operating the backrest rotation button 2 and the slide bar lifting button 3, a control signal can be sent to the corresponding structure to perform corresponding rotation and lifting operations, which will be described later.

[0149] The basic structure of the seat 1 according to the present embodiment has been basically described above, and the working principle of the seat 1 having the structure will be described below.

[0150] The seat 1 having the above structure of the present embodiment can realize: seat back rotation; seat back sliding forward and backward; and seat back angle adjustment. By combining the seat back rotation and the seat back sliding forward and backward, the orientation of the front seat can be changed, thereby achieving the purpose of improving the interactivity of the front and rear row passengers.

[0151] First, refer to the attached Figures 14A to 21C Describe the process of implementing seat orientation changes.

[0152] First, if Figures 14A to 14C As shown, the seat 1 is in a normal use state, at which the backrest 20 of the seat 1 is located at the rear end of the cushion portion 10 and faces the front side of the vehicle. In this normal use state, as shown in the figure, the inner rod 36 of the telescopic rod portion 34 of the rotation drive mechanism 30 in the backrest 20 is stored in the outer shell 35, that is, in the storage position. At the same time, in the cushion portion 10 of the seat 1, the slide rod 44 is located in the rear end limit recess 42B of the rear end of the moving slide groove 41 of the cushion frame 11, and the inner ratchet 46 is in a meshing and engaging state with the inner ratchet 12. The buckle portion 52 is in a locked state with the protruding shaft 31 of the backrest portion 20 and the two ends of the slide rod 44 of the cushion portion 10 through the first lock 55 and the second lock 56 respectively. In this locked state, the respective limit blocks of the first lock 55 and the second lock 56 pop out under the action of the compression spring and enter into their respective grooves and opposing grooves, thereby completing the locking of the buckle portion 52 with the protruding shaft 31 of the backrest portion 20 and the locking of the two ends of the slide rod 44 of the cushion portion 10. Through this locking, the slide rod 44 and the buckle portion 52 are prevented from generating relative movement, because if the two generate relative movement, the rotation of the slide rod 44 will not be able to drive the movement of the seat back.

[0153] Next, when the backrest rotation button 2 at the rear end of the cushion portion 10 is pressed, the control unit receives the instruction and responds, such as Fig.15A and Fig. 15B As shown, the spring 38 in the housing 35 of the telescopic rod 34 of the control rotation drive mechanism 30 releases its elastic force, and the inner rod 36 of the telescopic rod 34 extends downward under the elastic force of its spring 38 and passes through the opening 11A above the seat frame 11 and the through hole 45 of the slide rod 44 until it abuts against the rotating base 31 set on the inner side of the rear part of the seat frame 11, and the inner rod 36 switches from the storage position to the extended position. At this time, the ball head 37 set at the lower end of the inner rod 36 is clamped into the ball hole 32 set at the top of the rotating base 31, and the bushing 33 is set in the ball hole 32, thereby, the clamped ball head 37, the rotating base 31 and the bushing 33 form a rotating bearing structure.

[0154] In addition, when the backrest rotation button 2 at the rear end of the seat cushion portion 10 is pressed, Fig.16 As shown, the control unit also controls the compression springs 55B and 56B of the first latch 55 and the second latch 56 to move from Figures 14A to 14CThe state shown in FIG. 1 is changed to a compressed state, so that each stop block is completely received in the corresponding groove, that is, the locked state of the first latch 55 and the second latch 56 is released, and the buckle portion 52 is in an unlocked state in which it can rotate around the protruding shaft 51 as a rotation axis. In this embodiment, for example, the protruding shaft 51 can be configured as a retractable shaft. In the unlocked state, the protruding shaft 51 is pulled outward, and the buckle portion 52 is rotated around the protruding shaft 51 to Fig.16 The seat back 20 is in the horizontal or above horizontal state shown in the figure to prevent the buckle portion 52 from interfering with the seat cushion frame 11 when the seat back 20 is rotated.

[0155] When the buckle portion 52 and the slide bar 44 are Fig.16 When the backrest is disengaged, press the backrest rotation button 2 again. Figures 17A to 17B As shown, the motor 19 inside the backrest portion 20 will be activated and output torque to drive the inner rod 36 of the telescopic rod portion 34 to rotate around the bearing structure formed by the ball head 37 at its lower end and the rotating base portion 31. Since the motor 19 is fixed to the backrest frame 21 through a connecting rod, the backrest portion 20 of the seat 1 will be driven to rotate 180 degrees at the same time. At this time, the direction of the backrest portion 20 has changed from facing the front side of the vehicle to facing the rear side of the vehicle.

[0156] Next, the position of the rotated backrest 20 needs to be moved toward the front of the vehicle so that most of the cushion portion 10 is behind the backrest 20, thereby creating a seat state facing the rear of the vehicle. When sliding the backrest 20 of the seat 1, press the slide bar lifting button 3 at the rear of the cushion portion 10. After pressing the button, Figures 18A to 18B As shown, the inner rod 36 of the telescopic rod 34 in the backrest 20 is retracted into the outer shell 35 of the telescopic rod 34, that is, it returns from the extended position to the storage position, and the ball head 37 will also be separated from the ball hole 32 at the top of the rotating base 31. At the same time, the lifting drive 18 will be activated and drive the lifting rod 18A to rise to push up the connecting rod 16 connected between the left and right guide rails 15, so that the two guide rails 15 are also pushed up. As the guide rails 15 are pushed up, the slider 17 set at the rear end of the guide rails 15 also moves upward and contacts the slide bar 44, so that the U-shaped claw 17A on the upper side of the slider 17 is engaged with the outer surface of the slide bar 44. Then, along with the lifting of the guide rail 15, the slide bar 44 engaged in the claw 17A of the slider 17 of the guide rail 15 is also lifted up and disengaged from the rear end limit recess 42B of the movable slide groove 41, and rises to the middle of the movable slide groove 41, so that the backrest 20 of the seat 1 is in a state of being able to slide forward and backward, and the inner ratchet 46 is also disengaged from the inner ratchet 12, so that the backrest 20 of the seat 1 can adjust the inclination angle. In this state, if Fig.18A , Fig.18C As shown, the buckle portion 52 is rotated from the horizontal position back to the original vertical position.

[0157] Next, the backrest 20 of the seat 1 is pushed forward, and the backrest 20 drives the slide rods 44 through the buckle parts 52 to move toward the front of the vehicle in the movable slide grooves 41 on both sides of the seat cushion frame 11, and the sliders 17 engaged with the slide rods 44 are also driven to move toward the front of the vehicle in the guide rails 15. Fig.19A and Fig.19B , which shows a process in which the backrest portion 20 is pushed forward and thereby slides toward the front side of the vehicle.

[0158] When from Fig.19A and Fig.19B The state shown in FIG. 1 continues to push the backrest 20 forward, so that the slide bar 44 slides along the movable slide groove 41 to Figure 20A to Figure 20C When the seat back 20 is in the central position shown, the position sensor 60 provided in the central limiting recess of the movable slide groove 41 detects the position of the slide rod 44, triggering the position sensor 60 to send a signal to the lifting drive unit 18. The lifting drive unit 18 that receives the signal will drive the lifting rod 18A to retract downward to the initial position. At this time, the slide rod 44 will move downward together with the descending connecting rod part 66, the guide rail part 55 and the slider 17 and snap into the central limiting recess 42C of the movable slide groove 11 on both sides of the seat cushion frame 11. At the same time, the outer ratchet 47 and the middle outer ratchet 13A of the outer ratchet 13 will also complete the meshing and snapping. Therefore, the position of the slide rod 44 is fixed and the backrest 20 cannot continue to slide. Here, it should be noted that: in this embodiment, the position sensor is set at a position corresponding to the central limiting recess 42C of the movable slide groove 11 on both sides of the seat cushion frame, but this is not restrictive. In addition, when the slide bar 44 is engaged with the central stop recess 42C, the backrest 20 of the seat 1 can no longer slide forward and backward, and because the outer ratchet wheel and the outer ratchet teeth are also engaged, the angle of the seat back cannot be further adjusted. If the position and angle of the backrest need to be further adjusted, the slide bar lifting button 3 can be pressed again to push the slide bar 44 out of the stop recess.

[0159] After completing the above operations, Figure 20A to Figure 20C As shown, the orientation of the front seat 1 can be changed from facing the front side of the vehicle to facing the rear side of the vehicle.

[0160] In addition, the front and rear position of the backrest 20 of the seat 1 can be adjusted as needed. Figure 20A to Figure 20C In addition to the central position shown in FIG. 1 , the backrest portion 20 can also be further slid forward on this basis, so that the slide rod 44 is adjusted to the front end limiting recess 42A of the movable slide groove 11 on both sides of the seat cushion frame, so that the backrest portion 20 is as shown in FIG. Figures 21A to 21C The front end of the cushion portion 10 is shown.

[0161] Specifically, from Figure 20A to Figure 20CIn the state shown, press the slide rod lifting button 3 again to push the slide rod 44 out of the central limiting recess 42B. At this time, the outer ratchet and the outer ratchet wheel are disengaged from each other, and the backrest 20 of the seat 1 is changed to a state where it can continue to slide and adjust the inclination angle. Therefore, the backrest portion 20 continues to be pushed until the slide bar 44 moves to the position corresponding to the front end limit recess 42A of the movable slide groove 11 on both sides of the seat cushion frame. At this time, the position sensor 60 set at the front end limit recess 41A of the movable slide groove 11 detects the position of the slide bar 44, triggering the position sensor 60 to send a signal to the lifting drive unit 18, and the lifting drive unit that receives the signal will drive the lifting rod 18A to retract downward to the initial position. At this time, the slide bar 44 will move downward together with the descending connecting rod portion 66, the guide rail portion 55 and the slider 17 and be clamped into the front end limit recess 42A of the movable slide groove 11 on both sides of the seat cushion frame 11. At the same time, the outer ratchet 47 and the front end outer ratchet 13B of the outer ratchet 13 will also complete the meshing and clamping. Therefore, the position of the slide bar 44 is fixed again, and the backrest portion 20 cannot continue to slide.

[0162] After completing the above operations, Figures 21A to 21C As shown, the front seat 1 is completely turned toward the rear side of the vehicle.

[0163] Next, the adjustment process of the seat back angle will be described.

[0164] First, for scenario 1, that is, when the backrest 20 of the seat 1 is in Figures 14A to 14C In the normal use state, that is, when the seat is facing forward and the backrest is at the rear of the seat cushion frame, if the backrest of the seat 1 needs to be adjusted toward the rear of the vehicle, that is, to increase the backrest angle, the slide bar lifting button 3 can be pressed. At this time, the lifting drive unit 18 will be activated and drive the lifting rod 18A to rise to push up the connecting rod 16 connected between the left and right guide rails 15, so that the two guide rails 15 are also pushed up. As the guide rails 15 are pushed up, the slider 17 provided at the rear end of the guide rails 15 also moves upward and contacts the slide bar 44, so that the U-shaped claw 17A on the upper side of the slider 17 is engaged with the outer surface of the slide bar 44. Therefore, along with the lifting of the guide rail 15, the slide bar 44 engaged in the claw 17A of the slider 17 of the guide rail 15 is also lifted up and disengaged from the rear end limit recess 42B of the movable slide groove 41, and the inner ratchet 46 is also disengaged from the inner ratchet 12, and the slide bar 44 and the claw 17A can move relative to each other, that is, the front and rear adjustment of the backrest 20 of the seat 1 is not restricted. After the adjustment is completed, the slide bar lifting button 3 is released, the lifting rod 18A is retracted, the slide bar 44 returns to its position downward, the ratchet and the ratchet are engaged, the slide bar 44 cannot rotate toward the rear of the vehicle, and the backrest angle of the seat cannot be further adjusted.

[0165] Secondly, for scenario 2, that is, the backrest 20 of the seat 1 has been rotated 180 degrees and slid to the central limit recess 42C (see Figure 20A to Figure 20C ) or the front end stop recess 42A (see Figures 21A to 21C ), that is, when the seat is facing towards the rear of the vehicle and the position of the backrest is in the middle or front part of the seat cushion frame, if it is necessary to adjust the seat back toward the front of the vehicle, that is: to increase the angle of the backrest, the adjustment method is the same as that in the aforementioned scenario 1 during normal use, and will not be elaborated here.

[0166] It should be noted here that: in the above two scenarios, if you need to adjust the seat back forward, that is, to reduce the angle of the seat back, you do not need to press the slide bar lifting button, because the ratchet mechanism only limits rotation in one direction.

[0167] The seat of the embodiment of the present disclosure has been described in detail above in conjunction with the accompanying drawings. With the seat of the present disclosure, the direction of the seat can be changed only by rotating and translating the seat back, without occupying a large amount of space around the seat to complete the large-angle rotation of the entire seat, so that the space in the vehicle can be used more efficiently. Whether it is a small car or a large car, the seat direction change function can be realized in a limited space, meeting more diverse vehicle layout requirements, and increasing the use scenarios of the vehicle's internal space, such as: it can realize the use scenario of front and rear row passengers playing chess and card games in the car, or the scene of front and rear row passengers eating together. In addition, the seat of the present disclosure can be changed only by rotating and translating through simple button operations. The operation process is simple and intuitive, which not only improves the convenience of seat use, but also enables the seat to adapt to different riding needs and scenarios more flexibly. Passengers can easily adjust the direction and position of the seat according to their preferences or needs, realize face-to-face interaction between front and rear row passengers of the car, improve the interactivity between passengers, and enhance the passenger's car experience. Furthermore, there is no need for a large space required for seat reversal as in the prior art. The seat disclosed in the present invention provides more possibilities for the layout of the interior space of the vehicle by saving space and simplifying operation, optimizing the utilization efficiency and riding comfort of the interior space of the vehicle, which not only improves the practicality and comfort of the vehicle, but also enables passengers to enjoy a more flexible and personalized experience during the ride. In addition, the present invention realizes seat reversal with a simple structure, which can be better applied to the interior space layout of most current mass-produced models, does not require major changes to the structure and arrangement of the parts surrounding the seat, has less impact on the entire vehicle, especially the interior design, and has stronger compatibility, so that whether it is the design of a new model or the modification of an existing model, the seat disclosed in the present invention can be more easily applied, and has strong universality.

[0168] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0169] For example, in this embodiment, the guide rail portion 15 is an upwardly open guide groove, and the slider 17 is accommodated in the guide groove. However, this is not restrictive. For example, the guide rail portion can also be a track, and the lower end of the slider can be a downwardly open guide groove, and the track can be accommodated in the guide groove.

[0170] For example, in this embodiment, the first lock 55 between the buckle portion 52 and the protruding shaft 51 is constructed by a first groove 55A, a first compression spring 55B, a first limit block 55C, and a first opposing groove 55D, but this is not restrictive. For example, the first lock can also be an angle adjuster structure.

[0171] For example, in this embodiment, the lifting drive unit 18 and the connecting rod unit 16 are arranged at the front end of the seat cushion portion 10 of the seat 1, however, this is not restrictive, for example, the lifting drive unit 18 and the connecting rod unit 16 can also be simultaneously arranged at the rear end of the seat cushion portion 10.

[0172] For example, in this embodiment, when the backrest portion 20 is located at the rear end of the cushion portion 10, it is engaged by the inner ratchet and the inner ratchet teeth, and when the backrest portion 20 is located at the middle and front end of the cushion portion 10, it is engaged by the outer ratchet and the outer ratchet teeth, however this is not restrictive, for example, it may be that when the backrest portion 20 is located at the rear end of the cushion portion 10, it is engaged by the outer ratchet and the outer ratchet teeth, and when the backrest portion 20 is located at the middle and front end of the cushion portion 10, it is engaged by the inner ratchet and the inner ratchet teeth.

[0173] For example, in the present embodiment, the number of the return springs provided at the lower end of the outer ratchet is 3 on each side, but this is not restrictive and the number may be 2 or more than 3.

[0174] For example, in this embodiment, in order to reduce wear, improve efficiency, etc., bushings, gaskets, ball bearings, etc. are provided, but these components are not necessary and can be omitted according to circumstances.

[0175] For example, in this embodiment, only one central limiting recess is provided between the front limiting recess and the rear limiting recess, but this is not restrictive, and other intermediate limiting recesses may be provided, so as to adjust the fixable position of the backrest more finely in the front-back direction. Correspondingly, the position sensor may also be provided at a position corresponding to the other intermediate limiting recesses. In addition, the central limiting recess may not be provided, but only the front limiting recess and the rear limiting recess may be provided.

[0176] In addition, in this embodiment, a position sensor is also provided in the front-end limit recess, but this is not restrictive, and the position sensor may not be provided, and the lifting drive unit may be triggered by releasing the slide bar lifting button to lower the lifting rod to the initial position. Similarly, the position sensor in the central limit recess may also be omitted, and the lifting drive unit may be triggered by releasing the slide bar lifting button to lower the lifting rod to the initial position.

[0177] For example, in the present embodiment, the switching of the inner rod of the telescopic rod portion of the rotary drive mechanism from the storage position to the extended position, i.e., the telescopic movement of the inner rod is achieved by means of a spring, but this is not restrictive. For example, the inner rod of the telescopic rod portion can also be an electrically telescopic inner rod without using a spring.

Claims

1. A seat, comprising: Seat cushion for passengers: and A backrest portion, which is installed above the cushion portion and can be locked to the cushion portion via a locking portion for an occupant to lean on, is characterized in that: The seat cushion part and the backrest part are provided with a rotation driving mechanism, so that the backrest part can rotate about the up and down direction as the axis, and The seat cushion portion and the backrest portion are provided with a sliding drive mechanism so that the backrest portion can slide relative to the seat cushion portion in a front-rear direction.

2. The seat according to claim 1, characterized in that: The rotary drive mechanism comprises: A rotating base portion, the rotating base portion is arranged in the cushion portion at the left-right center of the rear end portion of the cushion portion, and a concave ball hole is formed on the upper surface of the rotating base portion; a telescopic rod portion, the telescopic rod portion being provided at the left-right center of the lower portion of the backrest portion so as to be opposed to the rotating base portion in the up-down direction, and A motor, wherein the motor is arranged above the telescopic rod in the backrest portion and is fixedly connected to the frame of the backrest portion, The telescopic rod portion comprises an outer shell and an inner rod, the end of the inner rod is formed in the form of a ball head and can be switched between a storage position and an extended position relative to the outer shell; in the storage position, the inner rod of the telescopic rod portion is stored inside the outer shell; in the extended position, the inner rod of the telescopic rod portion extends outward from the inner side of the outer shell so that the ball head cooperates with the ball hole of the rotating base portion.

3. The seat according to claim 1 or 2, characterized in that: The sliding drive mechanism comprises: A movable slide groove, which is respectively arranged on two side surfaces of the cushion portion in the left and right directions and extends in the front-back direction; A slide bar, the slide bar is arranged on the seat cushion part and extends in the left-right direction, and both ends of the slide bar are respectively mounted in the movable slide groove so as to be able to slide in the front-back direction along the movable slide groove, The movable slide groove is provided with a plurality of limiting recesses in the front-to-back direction, and the slide bar can be engaged in the limiting recesses to limit the sliding movement of the slide bar along the movable slide groove in the front-to-back direction, and Wherein, the plurality of limiting recesses at least include a front limiting recess and a rear limiting recess located at both ends of the movable slide groove in the front-rear direction.

4. The seat according to claim 3, characterized in that: The movable slide groove further includes a central limiting recessed portion arranged at a central position in the front-rear direction thereof.

5. The seat according to any one of claims 1 to 4, characterized in that: The locking portion for locking the backrest portion and the seat cushion portion to each other comprises: A protruding shaft, wherein the protruding shaft is respectively arranged at two side surfaces of the backrest in the left and right directions at the lower end of the backrest, so as to protrude outward from each side surface in the left and right directions; The buckle part is substantially rectangular in shape and has a through hole at one end in the length direction for the protruding shaft to be inserted, and the buckle part is also provided with a long hole extending in the length direction, and the end of the slide rod can be inserted into and fitted into the long hole, Wherein, a first latch is arranged between the protruding shaft and the through hole of the buckle part, and the first latch comprises: a first groove recessed inwardly from both ends of the protruding shaft in the diameter direction, a first compression spring arranged on the bottom surface of each first groove, a first limit block connected to the end of each first compression spring and capable of being completely accommodated in each first groove when each first compression spring is compressed, and a first opposing groove recessed inwardly from the through hole of the buckle part and arranged opposite to each first groove, when the compression of the first compression spring is released, the first limit block is located in both the first groove and the first opposing groove, and In which, a second lock is arranged between the end of the sliding rod and the long hole of the buckle part, and the second lock includes: a second groove recessed inwardly from both ends in the diameter direction of the end of the sliding rod, a second compression spring arranged on the bottom surface of each second groove, a second limit block connected to the end of each second compression spring and capable of being completely accommodated in each second groove when each second compression spring is compressed, and a second opposing groove recessed inwardly from the long hole of the buckle part and arranged opposite to each second groove, when the compression of the second compression spring is released, the second limit block is located in both the second groove and the second opposing groove.

6. The seat according to claim 4, characterized in that: A through hole is provided at the center of the length direction of the slide rod, and the through hole is aligned with the ball hole of the rotating base part and the inner rod of the telescopic tube part in the up-down direction, so that the inner rod can be fitted into the ball hole through the through hole, and The sliding bar is integrally provided with an inner ratchet and an outer ratchet on the left and right sides of the through hole, respectively, and an inner ratchet and an outer ratchet are correspondingly provided in the cushion portion, so that when the sliding bar is engaged in the rear end limiting recess, one of the inner ratchet and the outer ratchet engages with the corresponding one of the inner ratchet and the outer ratchet and limits the rotation of the sliding bar, and when the sliding bar is engaged in the central limiting recess or the front end limiting recess, the other of the inner ratchet and the outer ratchet engages with the corresponding one of the inner ratchet and the outer ratchet and limits the rotation of the sliding bar.

7. The seat according to claim 6, characterized in that The lower sides of the inner ratchet and the outer ratchet are respectively provided with return springs.

8. The seat according to any one of claims 2 to 7, characterized in that: Also includes: A pair of guide rails disposed along the front-rear direction inside the cushion portion; A U-shaped claw portion slidably disposed at the rear end of the guide rail portion, the claw portion opening upward; A connecting rod portion extending in the left-right direction at the front end inside the cushion portion and disposed between the pair of guide rail portions; as well as A lifting drive unit is provided below the connecting rod unit at least in the center of the extending direction of the connecting rod unit, so that the connecting rod unit has an initial position and a lifted position. Wherein, when the connecting rod portion is in the initial position, the claw portion in the guide rail portion does not contact the slide rod, and Wherein, when the connecting rod portion is in the lifted position, the claw portion in the guide rail portion is lifted so as to accommodate the sliding rod in the opening of the claw portion.

9. The seat according to claim 8, characterized in that Also includes: A position sensor is arranged at a position corresponding to the central limiting recess, and when it is detected that the slide bar slides into the central limiting recess, a signal is sent to the lifting drive unit to lower the connecting rod from the lifting position to the initial position.

10. A vehicle, characterized in that: Comprising a seat according to any one of claims 1-9.

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