CN220700959U - Seat slide rail of vehicle and vehicle - Google Patents

Abstract

The application relates to a seat slide rail of a vehicle and the vehicle, wherein the seat slide rail comprises a sliding mechanism (10) and a locking mechanism (20); the sliding mechanism (10) comprises at least three groups of sliding components, the sliding components comprise sliding rails (1) and sliding parts (2), the sliding parts (2) can slide along the sliding rails (1), the sliding rails (1) are used for being fixed with a bottom plate, and the sliding parts (2) are used for being fixed with a seat framework (30); the sliding rails (1) have the same structure, the sliding rails (1) are provided with bending structures and comprise straight line sections (11) and bending sections (12), and the straight line sections (11) are respectively arranged longitudinally and are not collinear; the locking mechanism (20) is used for locking and unlocking the relative positions of the sliding piece (2) and the sliding rail (1). The seat slide rail is convenient to adjust the position of the second row of seats, ensures the comfort of the second row of passengers, is convenient for the third row of passengers to get on or off the vehicle, and has the advantages of simple integral structure, simple adjustment operation, low cost and contribution to seat arrangement.

Description

Seat slide rail of vehicle and vehicle

Technical Field

The application relates to the technical field of vehicle seats, in particular to a seat slide rail of a vehicle and the vehicle.

Background

Six or seven passenger cars adopt the layout of three rows of seats, wherein the second row is designed into two independent seats, and an aisle is reserved between the two seats so as to be convenient for a third row passenger to get on or off. Due to the limitations of the width in the vehicle and the requirements of the riding comfort of the second row of seats, the width of the middle aisle is often smaller, so that the third row passengers can get on or off the vehicle conveniently.

To solve the problem of the width of the middle aisle of the second row of seats, firstly, the second row of seats are arranged close to the vehicle doors as much as possible so as to increase the width of the aisle, but the arrangement can affect the comfort of the passengers of the second row; the second solution is to assemble two sets of independent seat slide rails on the second row of seats along the longitudinal direction and the transverse direction of the vehicle body, and increase the width of the middle aisle through the adjustment of the transverse slide rails.

But when adopting two sets of independent seat slide rails, every seat slide rail all needs to set up locking mechanism and adjustment mechanism alone, and product structure is complicated, be unfavorable for cost management and control and adjust complex operation to, two sets of seat slide rails overlap in the direction of height, lead to the space occupation in the direction of height great, be unfavorable for the arrangement of seat.

Therefore, to the vehicle that is equipped with three rows of seats, how to design the seat slide rail to conveniently adjust the position of second row seat, when guaranteeing second row passenger travelling comfort, be convenient for third row passenger gets on or off the bus, overall structure is simple simultaneously, adjust easy operation, with low costs and do benefit to the seat arrangement, technical problem that the technical staff of the field needs to solve.

Disclosure of Invention

The utility model aims at providing a seat slide rail and vehicle of vehicle, to the vehicle that is equipped with three rows of seats, conveniently adjust the position of second row's seat, when guaranteeing second row passenger travelling comfort, be convenient for third row passenger get on or off the bus, overall structure is simple simultaneously, adjust easy operation, with low costs and do benefit to the seat arrangement.

In order to solve the technical problem, the application provides a seat slide rail of a vehicle, which comprises a sliding mechanism and a locking mechanism; the sliding mechanism comprises at least three groups of sliding components, the sliding components comprise sliding rails and sliding parts, the sliding parts can slide along the length direction of the sliding rails, the sliding rails are used for being fixed with a bottom plate of a vehicle, and the sliding parts are used for being fixed with a seat framework of the vehicle; the sliding rails are identical in structure, are provided with bending structures and comprise straight line sections and bending sections, and the straight line sections are respectively arranged longitudinally and are not collinear; the locking mechanism is used for locking and unlocking the relative positions of the sliding piece and the sliding rail.

In the seat rails of the two seats of the second row of the vehicle, the bent section of each seat rail is located closer to the vehicle door on the rear side, that is to say, the bending directions of the bending structures of the rails of the two seat rails are opposite, and the distance between the bent section and the other seat is larger than the distance between the straight section and the other seat, that is to say, the distance between the bent section and the adjacent side door is smaller than the distance between the straight section and the adjacent side door, and the seats are closer to the side door after the sliding member slides from the straight section to the bent section, that is to say, the distance between the two seats is larger as the sliding member slides rearward along the rails, that is to say, the width of the aisle is larger.

When a second-row passenger sits on the second-row seat, the seat is usually only required to be subjected to position adjustment in the front-rear direction, at this time, only the straight line segments of the sliding rail are required to be used, all the straight line segments are arranged in parallel and are longitudinally arranged, and the seat framework is used for adjusting the front-rear position along the straight line segments so as to meet the riding comfort of the second-row passenger.

When a third row of passengers get on or off the vehicle, the seat framework can drive the sliding part to slide backwards along the sliding rail to the bending section, the seat framework slides along the bending section so as to increase the width of a passageway between the two seats of the second row, after the third row of passengers get on or off the vehicle, the sliding part slides forwards along the sliding rail to the straight line section, the position of the sliding part in the straight line section is adjusted according to the requirements of the passengers of the second row, and finally the sliding part is locked through the locking mechanism.

That is, through the seat slide rail that this application provided, can adjust the position of seat through the setting of same group slide rail, when satisfying second row passenger travelling comfort, can also adjust the width in passageway between two seats to make things convenient for the third row passenger to get on or off the bus.

Because the slide rail is provided with the bending structure, through the seat skeleton in the front and back position adjustment of same group slide rail, can be when guaranteeing the travelling comfort of second row passenger, make things convenient for the third row passenger to adjust the width in passageway when getting on or off. Compared with the scheme that the seat slide rail is arranged to comprise two groups of seat slide rails in the longitudinal direction and the transverse direction, the seat slide rail is simpler in structure, lower in cost and more convenient in seat position adjustment, and the space occupied in the height direction can be effectively reduced by the seat slide rail provided by the application, so that the arrangement of a vehicle seat is facilitated.

Optionally, the number of the sliding rails is four, two sliding rails arranged in parallel form a group, and the two groups of sliding rails are arranged at intervals along the longitudinal direction.

Optionally, the slider includes slider and articulated shaft, the slider can follow the length direction of slide rail is slided, the slider passes through articulated shaft with rotatable coupling between the seat skeleton.

Optionally, the slider is equipped with the perforation, the top of articulated shaft is equipped with step and screw thread section, the screw thread section can pass in proper order the perforation with seat skeleton is connected with the nut, the slider is located the top of the step face of step.

Optionally, the bottom of articulated shaft still is connected with the bearing, the inner circle of bearing with the articulated shaft is fixed, the up end of slide rail still is equipped with the spout, the bearing is located in the spout, and can follow the spout slip.

Optionally, the lower end face of the sliding rail is further provided with a protruding part in a protruding mode, the lower end face of the protruding part is attached to the bottom plate and fixed through a mounting bolt, and a limiting space is formed between two lateral ends of the sliding rail in the width direction and the bottom plate; the cross section of slider is U type structure, the both sides terminal surface of the open end of U type structure still is connected with the limiting plate respectively, the limiting plate is located in the spacing space, just the height in spacing space is greater than the thickness of limiting plate.

Optionally, the sliding block is further connected with a roller, two ends of the roller are respectively rotatably connected with two side walls of the sliding block, and when the sliding block slides along the sliding rail, the roller can be attached to the upper end face of the sliding rail to roll;

and/or the inner side wall of the sliding block is also rotatably connected with a rolling element, and when the sliding block slides along the sliding rail, the rolling element can be attached to the side wall of the sliding rail to roll.

Optionally, the locking mechanism includes rack, control lever, spring, plectrum and lockpin, the rack with the slide rail is relatively fixed, just the rack is followed the length direction of slide rail is arranged, the rack is equipped with the lock tooth, the spring can act on the plectrum makes the plectrum drive the lockpin with the lock tooth cooperation, the plectrum with the control lever is connected, the control lever can pass through the plectrum drives the lockpin remove to with the lock tooth breaks away from, the lockpin with under the lock tooth break away from the state, the slider is followed when the slide rail slides, can drive the lockpin is followed the rack slides.

Optionally, at least part of the side walls of the sliding rail are provided with the racks.

The application also provides a vehicle, including two seats of arranging side by side, the seat with be equipped with the seat slide rail as described above between the bottom plate respectively, two the bending direction of the bending structure of the slide rail of seat slide rail is opposite, and the interval between section of just bending and another seat is greater than the interval between straightway and the another seat.

The technical effects of the vehicle with the seat slide rail are similar to those of the seat slide rail, and the description is omitted herein for saving the space.

Drawings

Fig. 1 is a schematic structural view of a seat slide rail and a seat frame of a vehicle in an installed state according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a seat frame for position adjustment along a seat track;

FIG. 3 is a schematic view of a slide assembly of the slide mechanism;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a cross-sectional view of FIG. 3;

FIG. 6 is a schematic view of a sliding assembly with rolling elements disposed on the inner side walls of the slider;

FIG. 7 is a schematic view of the slide mechanism and locking mechanism;

FIG. 8 is a schematic view of the structure of the paddle and locking pin of FIG. 7;

fig. 9 is a schematic view of the structure of the seat track when the rack and each track are independent of each other.

In fig. 1 to 9, reference numerals are explained as follows:

10 a sliding mechanism; 20 locking mechanism; 30 a seat frame;

the sliding rail is 1, the straight line section is 11, the bending section is 12, the sliding chute is 13, the protruding part is 14, and the mounting hole is 15;

2 sliding parts, 21 sliding blocks, 211 perforation, 22 hinging shafts, 221 steps, 222 thread sections, 23 limiting plates, 24 nuts, 25 bearings, 26 rollers and 27 rolling parts;

3 racks and 31 locking teeth;

4, a control rod and 41 bar-shaped holes;

5 springs, 51 mounting shaft;

6, pulling the sheet;

7, locking pins;

and 8, installing bolts.

Detailed Description

In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the application provides a seat slide rail of a vehicle and the vehicle, wherein the vehicle comprises the seat slide rail 1 of the vehicle, specifically, the vehicle can be six seats or seven seats, three rows of seats are arranged in the vehicle, and the seat slide rail 1 of the vehicle can be applied to a second row of seats.

Specifically, the second row is provided with two independent seats, and a passageway is formed between the two seats, and the positions of the two seats in the second row can be adjusted through the seat slide rail 1, so that the width of the passageway is increased, and passengers in the third row can get on or off the vehicle conveniently.

As shown in fig. 1, the seat slide rail 1 includes a slide mechanism 10 and a lock mechanism 20, wherein the slide mechanism 10 includes at least three sets of slide assemblies, the slide assemblies include a slide rail 1 and a slide member 2, the slide rail 1 is used for being fixed with a floor of a vehicle, the slide member 2 is used for being fixed with a seat frame 30 of the vehicle, the slide member 2 can slide along the slide rail 1 to adjust a position of a seat, the lock mechanism 20 can lock and unlock a relative position of the slide member 2 and the slide rail 1, it is easy to understand that when the lock mechanism 20 is in an unlocked state, the slide member 2 can slide along the slide rail 1, the lock mechanism 20 is in a locked state, the relative position of the slide member 2 and the slide rail 1 is locked, and the position of the seat cannot be adjusted.

The structure of each sliding rail 1 is the same, each sliding rail 1 is provided with a bending structure and comprises straight line sections 11 and bending sections 12, as shown in fig. 2-4, the sliding rail 1 is approximately in an L-shaped structure, the straight line sections 11 are positioned at the front side of the bending sections 12, the straight line sections 11 of each sliding rail 1 are arranged in parallel and are arranged along the longitudinal direction of the vehicle, and the straight line sections 11 of each sliding rail 1 are not collinear, specifically, all the straight line sections 11 cannot be arranged on the same straight line, but part of the straight line sections 11 can be collinear, namely, are arranged on the same straight line, so that when the number of the sliding rails 1 is three, the straight line sections 11 of each sliding rail 1 are parallel and are respectively arranged at three vertexes of a triangle, thereby ensuring the stability of the seat in the adjustment position and avoiding the rotation of the seat in the adjustment of the position of the seat.

Herein, "front" means a side toward the vehicle head in the vehicle longitudinal direction, and "rear" means a side away from the vehicle head in the vehicle longitudinal direction, with the second row of seats being located on the front side of the third row of seats.

In the seat rails 1 of the two seats of the second row of the vehicle, the folded section 12 of each seat rail 1 is located closer to the vehicle door on the rear side, that is to say, the folded direction of the folded structure of the rails 1 of the two seat rails 1 is opposite, and the distance between the folded section 12 and the other seat is greater than the distance between the straight section 11 and the other seat, that is to say, the distance between the folded section 12 and the adjacent side door is smaller than the distance between the straight section 11 and the adjacent side door, the slide 2 is slid from the straight section 11 to the folded section 12 (as in fig. 2, after the seat frame 30 is moved from the position a to the position B), the seats are located closer to the side door, that is to say, as the slide 2 is slid rearward along the rails 1, the distance between the two seats is increasingly greater, that is to say, the width of the aisle is increasingly greater.

When the second row passenger sits on the second row seat, only the position adjustment in the front-rear direction is generally required for the seat, at this time, only the straight line segments 11 of the slide rail 1 are required, and each straight line segment 11 is arranged in parallel and longitudinally, and the seat frame 30 adjusts the front-rear position along the straight line segment 11 at the position shown in fig. 2 a, so as to satisfy the riding comfort of the second row passenger.

When the third row passengers get on or off the vehicle, the seat framework 30 can drive the sliding part 2 to slide backwards along the sliding rail 1 to the bending section 12, as shown in a position shown in fig. 2B, the seat framework 30 slides along the bending section 12 to increase the width of the passageway between the two seats in the second row, after the third row passengers get on or off the vehicle, the sliding part 2 slides forwards along the sliding rail 1 to the straight line section 11, the position of the sliding part 2 in the straight line section 11 is adjusted according to the requirements of the second row passengers, and finally the sliding part is locked by the locking mechanism 20.

That is, through the seat slide rail 1 provided by this embodiment, the position of the seat can be adjusted through the setting of the same group of slide rails 1, and the width of the aisle between two seats can be adjusted while satisfying the comfort of the second-row passenger, so as to facilitate the boarding and alighting of the third-row passenger.

Because slide rail 1 is provided with the structure of bending, through seat skeleton 30 in the front and back position adjustment of same group slide rail 1, can be when guaranteeing the travelling comfort of second row passenger, make things convenient for the third row passenger to adjust the width in passageway when getting on and off. Compared with the scheme that the seat slide rail 1 is arranged to comprise two groups of seat slide rails in the longitudinal direction and the transverse direction, the seat slide rail is simpler in structure, lower in cost and more convenient in seat position adjustment, and the occupied space in the height direction can be effectively reduced by the seat slide rail provided by the embodiment, so that the arrangement of a vehicle seat is facilitated.

In the present embodiment, the specific number of the sliding rails 1 is not limited, and as shown in fig. 1 and 2, the sliding rails 1 include four sliding rails 1, wherein two sliding rails 1 are arranged in a group, and two groups of sliding rails 1 are arranged back and forth along the longitudinal direction, and as shown in fig. 2, the four sliding rails 1 are arranged at positions of four vertexes of a quadrilateral. Of course, the number of the slide rails 1 may be five or more, and the arrangement of four slide rails 1 may simplify the overall structure while adjusting the stability in the seat position.

As shown in fig. 4 and 5, the slider 2 includes a slider 21 and a hinge shaft 22, wherein the slider 21 is capable of sliding along the length direction of the slide rail 1, the slider 21 and the seat frame 30 are connected by the hinge shaft 22, and the slider 21 and the seat frame 30 are rotatable relative to each other, specifically, the hinge shaft 22 and the slider 21 are rotatable relative to each other, or the hinge shaft 22 and the seat frame 30 are rotatable relative to each other, or the hinge shaft 22 and the slider 21 are rotatable relative to each other, and the hinge shaft 22 and the seat frame 30 are rotatable relative to each other.

So set up, each slider 21 can drive the seat and slide along slide rail 1 when sliding along slide rail 1, when slider 21 slides to the structure department of bending, this seat skeleton 30 only takes place to the side movement of side door along slide rail 1, but because at least three non-collinear articulated shaft 22 is connected with seat skeleton 30, seat skeleton 30 does not take place to rotate, and stability is good and user experience is good.

The slider 21 is provided with a through hole 211, the through hole 211 is located at the center of the slider 21, the top of the hinge shaft 22 is provided with a step 221 and a threaded section 222, the threaded section 222 passes through the through hole 211 and the seat frame 30 and is in threaded fit with the nut 24, the slider 21 is located above the step 221 surface of the step 221, and the connection between the slider 21 and the seat frame 30 is achieved through the step 221 and the nut 24.

If the hinge shaft 22 and the slider 21 are rotatable relative to each other, the hole diameter of the through hole 211 is larger than the outer diameter of the hinge shaft 22, so that the hinge shaft 22 can slide relative to the slider 21, thereby ensuring smoothness in the adjustment process of the seat position.

As shown in fig. 4, the bottom of the hinge shaft 22 is further connected with a bearing 25, specifically, the inner ring of the bearing 25 is fixed with the hinge shaft 22, the upper end face of the sliding rail 1 is further provided with a sliding groove 13, the bearing 25 is located in the sliding groove 13, and the width of the sliding groove 13 is slightly larger than the diameter of the outer ring of the bearing 25, so that the bearing 25 can slide along the sliding groove 13 to provide guidance for the movement of the sliding element 2 along the sliding groove 13, so that obvious shaking gaps of the sliding element 2 relative to the normal direction of the motion of the sliding rail 1 are eliminated, the stability of the seat is improved, and the comfort is further improved. And the outer ring of the bearing 25 can roll along the inner wall of the chute 13.

Of course, the bottom of the hinge shaft 22 may be directly located in the chute 13, the bottom of the hinge shaft 22 may slide along the chute 13 in a matched manner, and provide guidance for the sliding of the slider 21, and the arrangement of the bearing 25 may reduce the friction force of the slider 21 in the sliding process along the slide rail 1, ensure the sliding smoothness between the two, and reduce the acting force of the seat for front-back adjustment.

As shown in fig. 4 and 5, the lower end surface of the slide rail 1 is also provided with a projection 14 protruding downward, and the lower end surface of the projection 14 is fitted to the floor of the vehicle and fixed by the mounting bolt 8. Specifically, the front and rear ends of the slide rail 1 are respectively provided with a mounting hole 15, the mounting holes 15 penetrate through the protruding portions 14, the mounting holes 15 are fixed with the bottom plate through the mounting bolts 8, and spacing spaces are respectively formed between the two lateral ends of the slide rail 1 (namely, the two lateral ends of the protruding portions 14) and the bottom plate.

The cross section of slider 21 is U type structure, and the both sides terminal surface of the open end of this U type structure still is equipped with limiting plate 23 respectively, and the opening of the U type structure of slider 21 is down to parcel slide rail 1, limiting plate 23 are located spacing space, in order to restrict slider 21 and slide rail 1 break away from. Meanwhile, the height of the limiting space is larger than the thickness of the limiting plate 23, the limiting plate 23 is prevented from being in contact with the bottom plate, the sliding block 21 is guaranteed to smoothly slide along the sliding rail 1, in addition, small clearance fit is achieved between the limiting plate 23 and the top wall of the limiting space, the shaking clearance between the sliding piece 2 and the sliding rail 1 in the height direction is limited, the stability of the seat is guaranteed, and riding comfort is improved.

Of course, in the present embodiment, the slider 21 may be integrally formed and have a C-shaped cross section, and the slider 21 may be attached to the end of the slide rail 1 so that the slide rail 1 is inserted into the groove of the slider 21. The limiting plate 23 is arranged, so that the installation operation between the sliding block 21 and the sliding rail 1 is facilitated. And when the sliding block 21 is arranged to be of a U-shaped cross section and is connected with the limiting plate 23, the installation is convenient.

As shown in fig. 4 and 5, the sliding block 21 is further provided with rollers 26, two ends of the rollers 26 are rotatably connected with two side walls of the sliding block 21 respectively, when the sliding block 21 slides along the sliding rail 1, the rollers 26 can be attached to the upper end face of the sliding rail 1 to slide, specifically, the number of the rollers 26 can be one or two as shown in fig. 4, and the hinge shaft 22 is located between the two rollers 26, so that the sliding stability of the sliding block 21 is ensured.

As shown in fig. 6, the sliding block 21 is further provided with a rolling member 27, where the rolling member 27 is rotatably connected between two inner side walls (specifically, two inner side walls of the U-shaped structure) of the sliding block 21, and when the sliding block 21 slides along the sliding rail 1, the rolling member 27 can be attached to the side walls of the sliding rail 1 to roll, and specifically, the rolling member 27 may be a spherical structure or a wheel-shaped structure, which is not limited herein.

The roller 26, the rolling element 27 and the bearing 25 can reduce sliding friction force between the lock pin and the slide rail 1 in the process of sliding along the slide rail 1, ensure sliding smoothness between the lock pin and the slide rail 1, and reduce acting force for adjusting the seat back and forth.

As shown in fig. 7 and 8, the locking mechanism 20 includes a rack 3, an operating lever 4, a spring 5, a pulling piece 6 and a lock pin 7, wherein the rack 3 is relatively fixed with the sliding rail 1, the rack 3 is arranged along the length direction of the sliding rail 1, the rack 3 is provided with a lock tooth 31, the pulling piece 6 is connected with a mounting shaft 51, the spring 5 is a torsion spring sleeved on the mounting shaft 51, two jaws of the torsion spring are respectively abutted to the pulling piece 6 and the outer wall of the sliding block 21, the elastic force provided by the torsion spring can act on the pulling piece 6, so that the pulling piece 6 rotates and drives the lock pin 7 to move to be matched with the lock tooth 31, the pulling piece 6 is also connected with the operating lever 4, the movement of the operating lever 4 can drive the lock pin 7 to move to be matched with or separated from the lock tooth 31 through the pulling piece 6, the lock pin 7 is in an unlocking state under the separation state of the lock pin 7 and the lock tooth 31, and when the sliding piece 2 slides along the sliding rail 1, the lock pin 3 can be driven.

When the seat is adjusted, the operating lever 4 is driven to transversely move left and right through the seat operating mechanism, the poking plate 6 is driven to rotate, the poking plate 6 can drive the lock pin 7 to move to be separated from the lock teeth 31 after rotating, at the moment, the locking mechanism 20 is in an unlocking state, a passenger can adjust the position of the seat through pushing and pulling the seat, after the position of the seat is adjusted, the driving of the seat operating mechanism is released, the acting force of the operating lever 4 on the poking plate 6 is released, at the moment, the poking plate 6 can reversely rotate under the action of the spring 5 and drive the lock pin 7 to move to be matched with the lock teeth 31, at the moment, the locking mechanism 20 is in a locking state, and the position of the seat cannot be adjusted.

In the process that the sliding member 2 slides along the sliding rail 1, the lock pin slides along the rack 3, so that the rack 3 is also provided with a bending structure and approximately comprises a straight line section and a bending section, in this embodiment, the rack 3 may be arranged on a side wall of the sliding rail 1, the sliding rail 1 is fixed with the bottom plate, or the rack 3 may be provided as a separate structure separated from the sliding rail 1 as shown in fig. 9, at this time, the rack 3 is fixed with the bottom plate, and the sliding rail 1 only plays a role of bearing and guiding.

Obviously, when the rack 3 is disposed on the side wall of the slide rail 1, the overall structure can be simplified, and at this time, as shown in fig. 1 and 2, the side wall of each slide rail 1 may be respectively provided with the rack 3, or the side wall of a part of the slide rails 1 (such as one slide rail 1, two slide rails 1 or three slide rails 1) may be provided with the rack 3, which is not particularly limited herein.

When the rack 3 is arranged on the side wall of the slide rail 1, the side wall of the slide block 21 is also provided with a lock hole, and the lock pin 7 penetrates through the lock hole and can axially move relative to the lock hole under the action of the control rod 4 and the spring 5 so as to be separated from and matched with the lock teeth 31.

The lever 4 is further provided with a bar-shaped hole 41 in the width direction, the hinge shaft 22 passes through the bar-shaped hole 41, and the lever 4 can be attached to the upper end face of the slider 21 to slide, and the movement of the lever 4 can be guided by the bar-shaped hole 41 and the hinge shaft 22, so that the movement stability of the lever 4 is ensured.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.

Claims (10)

1. A seat slide for a vehicle, characterized by comprising a slide mechanism (10) and a locking mechanism (20);

the sliding mechanism (10) comprises at least three groups of sliding assemblies, the sliding assemblies comprise sliding rails (1) and sliding pieces (2), the sliding pieces (2) can slide along the length direction of the sliding rails (1), the sliding rails (1) are used for being fixed with a bottom plate of a vehicle, and the sliding pieces (2) are used for being fixed with a seat framework (30) of the vehicle;

the structure of each sliding rail (1) is the same, each sliding rail (1) is provided with a bending structure and comprises straight line sections (11) and bending sections (12), and each straight line section (11) is respectively arranged longitudinally and is not collinear;

the locking mechanism (20) is used for locking and unlocking the relative positions of the sliding piece (2) and the sliding rail (1).

2. Seat rail for a vehicle according to claim 1, characterized in that the number of rails (1) is four, that two juxtaposed rails (1) are in one group, that two groups of rails (1) are arranged at intervals in the longitudinal direction.

3. Seat slide rail for a vehicle according to claim 1, characterized in that the slide (2) comprises a slide block (21) and a hinge shaft (22), the slide block (21) being slidable in the longitudinal direction of the slide rail (1), the slide block (21) being rotatably connected with the seat frame (30) by means of the hinge shaft (22).

4. A seat slide for a vehicle according to claim 3, characterized in that the slider (21) is provided with a through hole (211), the top of the hinge shaft (22) is provided with a step (221) and a threaded section (222), the threaded section (222) can sequentially pass through the through hole (211) and the seat frame (30) and is connected with a nut (24), and the slider (21) is located above the step surface of the step (221).

5. A seat slide rail for a vehicle according to claim 3, characterized in that the bottom of the hinge shaft (22) is further connected with a bearing (25), the inner ring of the bearing (25) is fixed with the hinge shaft (22), the upper end surface of the slide rail (1) is further provided with a slide groove (13), and the bearing (25) is located in the slide groove (13) and can slide along the slide groove (13).

6. The seat slide rail of a vehicle according to any one of claims 3 to 5, characterized in that the lower end surface of the slide rail (1) is further provided with a protruding portion (14) protruding downward, the lower end surface of the protruding portion (14) is attached to the floor and fixed by a mounting bolt (8), and a limit space is formed between both side ends in the width direction of the slide rail (1) and the floor;

the cross section of slider (21) is U type structure, the both sides terminal surface of the open end of U type structure still is connected with limiting plate (23) respectively, limiting plate (23) are located in the spacing space, just the height in spacing space is greater than the thickness of limiting plate (23).

7. The seat slide rail of the vehicle according to claim 6, wherein the slider (21) is further connected with a roller (26), two ends of the roller (26) are rotatably connected with two side walls of the slider (21), respectively, and the roller (26) can be attached to an upper end surface of the slide rail (1) to roll when the slider (21) slides along the slide rail (1);

and/or the inner side wall of the sliding block (21) is also rotatably connected with a rolling element (27), and when the sliding block (21) slides along the sliding rail (1), the rolling element (27) can be attached to the side wall of the sliding rail (1) to roll.

8. The seat slide rail of any one of claims 1-5, wherein the locking mechanism (20) comprises a rack (3), a lever (4), a spring (5), a pulling piece (6) and a lock pin (7), the rack (3) is relatively fixed with the slide rail (1), the rack (3) is arranged along the length direction of the slide rail (1), the rack (3) is provided with a lock tooth (31), the spring (5) can act on the pulling piece (6) to enable the pulling piece (6) to drive the lock pin (7) to be matched with the lock tooth (31), the pulling piece (6) is connected with the lever (4), the lever (4) can drive the lock pin (7) to be separated from the lock tooth (31) through the pulling piece (6), and when the sliding piece (2) slides along the slide rail (1) in a state that the lock pin (7) is separated from the lock tooth (31), the sliding piece (3) can be driven to slide along the rack (3).

9. Seat rail for vehicles according to claim 8, characterized in that at least part of the side walls of the rail (1) are provided with the rack (3).

10. A vehicle, characterized by comprising two seats arranged side by side, between which the seat rail according to any one of claims 1-9 is arranged, respectively, and the bending directions of the bending structures of the rails (1) of the two seat rails are opposite, and the distance between the bending section (12) and the other seat is larger than the distance between the straight section (11) and the other seat.