CN216733974U

CN216733974U - Long slide rail device for vehicle seat

Info

Publication number: CN216733974U
Application number: CN202220296819.7U
Authority: CN
Inventors: 邹耀忠; 杨广; 孔令创; 袁玉华
Original assignee: Jiangsu Zhongming Xianghe Seiko Co ltd
Current assignee: Jiangsu Zhongming Xianghe Seiko Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-06-14
Anticipated expiration: 2032-02-14

Abstract

A long slide rail apparatus for a vehicle seat, comprising: the pair of sliding guide rails are arranged on two sides of a vehicle body bottom plate and provided with sliding guide rail inner cavities, and sliding guide rail open grooves are formed in the surfaces, facing upwards, of the sliding guide rails; a pair of harness guide rails provided at a middle position of a vehicle body floor, kept in a parallel state with the slide guide rails, and capable of housing a harness duct; the pair of wire harness sliding guide modules are arranged in the wire harness guide rail and can drive the wire harness pipeline to move; two sliding mechanisms which are arranged in the inner cavities of the corresponding sliding guide rails; the two groups of driving components are respectively connected with the corresponding sliding mechanisms; and the two anti-backlash locking mechanisms are respectively arranged in the inner cavities of the corresponding sliding guide rails and are respectively connected with the two groups of driving components. The advantages are that: simple structure, reliable durable help realizing that car seat dismantles neatly and the no structure on back automobile body floor exposes, the follow-up operation of being convenient for, locking intensity is high, eliminate the clearance, ensures the steady reliable that car seat removed.

Description

Long slide rail device for vehicle seat

Technical Field

The utility model belongs to the technical field of automobile spare and accessory parts, and particularly relates to a long slide rail device for a vehicle seat.

Background

With the continuous improvement of the intelligent level of the automobile industry in China and the rapid development of the unmanned technology, the seat which only has a plurality of rows of seats such as MPV and the like in the prior art and adopts a long slide rail to adjust the long stroke becomes more and more important to be concerned in the research and development of the current intelligent automobile; in order to meet the use requirements of a user such as rest and cargo loading, the user often needs to disassemble the seat with the long slide rail device to vacate a space, but for the existing long slide rail device installed on the vehicle body bottom plate, once the vehicle seat is disassembled, structural parts on the long slide rail device are often exposed easily, so that the follow-up operation is greatly influenced, and the quick disassembly is not facilitated; simultaneously along with the development of present car intellectuality and electrified trend, all will install more electrical apparatus in the car, and also can install a lot of electronic equipment such as ventilation heating member, occupation response piece etc. on car seat, this just needs to use a large amount of electron pencil, but current long slide rail device often can not carry out reasonable holding or operations such as categorised to these electron pencil, and the pencil exposes after the seat is dismantled to bring a series of follow-up problems.

In view of the above, there is a need for a reasonable improvement of the existing long rail device of the car seat. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a long slide rail device for a vehicle seat, which has a simple structure, is reliable and durable, is beneficial to realizing the cleanness of a vehicle body floor after the vehicle seat is disassembled and the exposure of no structural part so as to facilitate the subsequent operation, has high locking strength and can efficiently eliminate gaps.

The task of the present invention is accomplished by a long slide rail device for a vehicle seat, comprising: the pair of strip-shaped sliding guide rails are symmetrically arranged on two sides of a vehicle body bottom plate, both the sliding guide rails are provided with sliding guide rail inner cavities penetrating through the length direction of the sliding guide rails, and one side surface of the sliding guide rails, which faces upwards, is provided with a sliding guide rail open slot extending along the length direction of the sliding guide rails; a pair of strip-shaped wire harness guide rails which are arranged at the middle position of the floor of the vehicle body, are parallel to the sliding guide rails and can be used for accommodating wire harness pipelines; the pair of wire harness sliding guide modules are respectively arranged in the wire harness guide rails corresponding to the wire harness sliding guide modules and can drive the wire harness pipeline for accommodating the wire harness connected with the seat electronic component to move; the two sliding mechanisms are respectively arranged in the corresponding sliding guide rail inner cavities and can slide back and forth in the sliding guide rail inner cavities in a reciprocating manner; the two groups of driving assemblies are respectively arranged in the corresponding sliding guide rails in a penetrating manner, penetrate through the sliding guide rail open grooves upwards respectively, are respectively connected with the corresponding sliding mechanisms respectively and can drive the sliding mechanisms to reciprocate; the two clearance eliminating locking mechanisms are respectively arranged in the corresponding sliding guide rail inner cavities and are respectively connected with the two groups of driving assemblies, the two clearance eliminating locking mechanisms can lock the sliding mechanisms in the sliding guide rail inner cavities of the sliding guide rails in a locking state, and the two clearance eliminating locking mechanisms can also eliminate the clearances between the sliding guide rails and the sliding mechanisms in the vertical and horizontal directions.

In a specific embodiment of the present invention, a pair of decorative dust-proof strips extending along the length direction of the slide rail and symmetrically disposed at both side positions of the slide rail opening groove are fitted to the upper portion of the top panel of the slide rail.

In another specific embodiment of the present invention, a plurality of sliding rail mounting holes are provided on the bottom panel of the sliding rail at intervals along the length direction thereof.

In another specific embodiment of the present invention, each of the two sliding mechanisms includes a pair of sliding plates disposed inside the inner cavity of the sliding guide rail, the pair of sliding plates are symmetrically disposed, and a sliding guide wheel is disposed at each of two ends of one side surface of the two sliding plates, the two sliding guide wheels are in contact with and capable of rolling on the bottom surface plate of the sliding guide rail; the end parts of the two sliding plates of one sliding mechanism, which are close to the driving component, are also connected with a guide rod, and the guide rod is connected with the driving component; a pair of sliding plate connecting convex blocks are further formed on the upper portions of the two sliding plates of one sliding mechanism, and the two pairs of sliding plate connecting convex blocks are symmetrically arranged by taking the vertical center line of the sliding plates as a symmetry axis.

In a further specific embodiment of the present invention, the driving assembly includes a housing case which is inserted into the inner cavity of the sliding guide, and the housing case is composed of housings which are fastened to each other from left to right, the upper and lower ends of the housing case are open, a rope pulling member, an upper positioning shaft, a driving plate and a driven plate which are hinged to the upper positioning shaft, a lower positioning shaft, and a driving plate which is rotatably mounted on the lower positioning shaft are sequentially disposed inside the housing case from top to bottom, the lower end of the rope pulling member is formed with a rope pulling head which can move up and down under an external force, the axial ends of the upper positioning shaft are respectively connected to the left and right housings of the housing case, and the end of the driving plate close to the rope pulling member is formed with a driving plate connecting portion, the pull rope head is arranged in the connecting part of the driving plate in a penetrating way, a driven plate connecting shaft is arranged on the driven plate and at the position corresponding to the upper part of the connecting part of the driving plate, a reset torsion spring is sleeved on the shaft body of the upper positioning shaft, a driving plate bulge is convexly arranged on the driving plate and at the position corresponding to one end part of the reset torsion spring to form a driving plate bulge, and the driving plate bulge is abutted against one end part of the reset torsion spring; the driven plate connecting shaft is also provided with an extension spring which extends downwards, the upper end part of the extension spring is hooked on the driven plate connecting shaft, the lower end part of the extension spring is hooked on the plate body part which is on the upper side of the middle part of the driving plate, the axial two end parts of the lower positioning shaft are respectively connected with the left shell and the right shell of the containing box body, the upper end part of the driving plate is abutted against the lower end part of the driven plate, the middle part of the driving plate is hinged on the lower positioning shaft, a driving groove is formed in the lower end part of the driving plate, and the guide rod of the sliding mechanism is installed in the driving groove in a matching mode.

In still another embodiment of the present invention, the anti-backlash locking mechanism comprises a locking plate, a pair of linked hinged plates disposed on both sides of the locking plate in the length direction, and two anti-backlash parts, wherein locking plate positioning rods extending in the vertical direction are respectively disposed at the proximal end positions of both ends of the locking plate in the length direction, and a locking return spring is respectively sleeved on the locking plate positioning rods, the locking return spring is also disposed upward in the vertical direction and penetrates through the locking plate body, the diameter of the locking return spring at the lowest end of the lower part of the locking plate is larger than the diameter of the body at the upper part of the locking plate, the locking return spring at the lower part of the locking plate is in a conical structure gradually contracting from bottom to top, the two linked hinged plates are in a hook-like structure, the middle parts of the linked hinged plates are hinged with the sliding plates at both sides through a hinge shaft, one end part of the linkage hinged plate is abutted against the surface of one side of the locking plate facing downwards, the clearance eliminating piece is of a T-shaped plate structure and is provided with a clearance eliminating piece connecting rod and a pair of clearance eliminating sleeve blocks, the clearance eliminating piece connecting rod is connected with one end part of the linkage hinged plate far away from the locking plate, and the two clearance eliminating sleeve blocks are respectively sleeved on the sliding plate connecting convex blocks of the sliding plates at two sides.

After adopting the structure, the utility model has the following technical effects: firstly, by arranging the wire harness guide rail capable of accommodating the wire harness on the vehicle bottom plate, the structure is compact, the regular accommodation of the wire harness can be realized, the winding of a circuit can be prevented, the wire harness sliding guide module can drive the wire harness pipeline to stably and reliably move in the wire harness guide rail, the follow-up of the electrically connected wire harness in the motion process of the seat can be met, meanwhile, the efficient accommodation of a structural part is realized by arranging a pair of sliding guide rails, the rapid disassembly can be realized when the vehicle seat needs to be disassembled, no structural part leaks out of the vehicle bottom plate after the disassembly, and the clean effect is ensured; secondly, through the structure that the anti-backlash piece of the anti-backlash locking mechanism is matched with the sliding plate in an interlocking manner, when the sliding mechanism is in a locking state, the anti-backlash sleeve block with the anti-backlash function and the connecting bulge of the sliding plate can ensure small clearances between the sliding plate and the sliding guide rail in the vertical direction and the horizontal direction, and when the anti-backlash sleeve block moves towards the inner side of the connecting bulge of the sliding plate, the anti-backlash sleeve block and the sliding guide rail are in a loosening state, so that the sliding plate can slide smoothly, and the stable reliability of the movement of the vehicle seat is ensured.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the sliding mechanism and the driving assembly in the embodiment shown in fig. 1.

Fig. 3 is a schematic structural diagram of the sliding mechanism and the anti-backlash locking mechanism in the embodiment shown in fig. 1.

In the figure: 1. the sliding guide rail comprises a sliding guide rail 11, a sliding guide rail inner cavity 12, a sliding guide rail open slot 13, a decorative dustproof strip 14 and a sliding guide rail mounting hole; 2. a wire harness guide rail; 3. a wire harness sliding guide module; 4. a sliding mechanism, 41 sliding plates, 411 sliding plates connecting convex blocks, 42 sliding guide wheels, 43 guide rods; 5. the rope pulling device comprises a driving assembly, a containing box body 51, a rope pulling piece 52, a rope pulling head 521, an upper positioning shaft 53, a reset torsion spring 531, a driving plate 54, a driving plate 541, a driving plate connecting part 542, a driving plate bulge 55, a driven plate 551, a driven plate connecting shaft 552, an extension spring 56, a lower positioning shaft 57, a driving plate 571 and a driving groove 53; 6. the backlash eliminating locking mechanism comprises a backlash eliminating locking mechanism 61, a locking plate 611, a locking plate locating rod 612, a locking return spring 62, a linkage hinge plate 63, a backlash eliminating piece 631, a backlash eliminating piece connecting rod 632 and a backlash eliminating sleeve block.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the following detailed description is given by way of examples, but the description of the examples is not intended to limit the scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in substance, should be considered as the scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.

Referring to fig. 1 to 3, a long slide rail device for a vehicle seat is shown, which includes a pair of elongated sliding guide rails 1 symmetrically disposed on two sides of a vehicle body floor and both having sliding guide rail inner cavities 11 penetrating the length direction thereof, and a sliding guide rail opening groove 12 extending along the length direction thereof is formed on an upward facing surface of the sliding guide rail 1; the wire harness storage device for the vehicle seat is characterized in that a pair of strip-shaped wire harness guide rails 2 are arranged at the middle positions of the floor of the vehicle body, the wire harness guide rails and the wire harness sliding guide modules are both in parallel with the sliding guide rails 1 and can be used for storing wire harness pipelines, a pair of wire harness sliding guide modules 3 are respectively arranged in the wire harness guide rails 2 corresponding to the wire harness sliding guide modules and can drive the wire harness pipelines for containing wire harnesses connected with the seat electronic component to move, and specific structural information about the wire harness guide rails 2 and the wire harness sliding guide modules 3 can be referred to 'a wire harness storage device for the vehicle seat' disclosed in the Chinese utility model patent with the granted patent number of CN 214689363U; two sliding mechanisms 4 are shown and are connected and installed with a vehicle seat framework, and the two sliding mechanisms 4 are respectively arranged in the sliding guide rail inner cavities 11 corresponding to the two sliding mechanisms and can slide back and forth in the sliding guide rail inner cavities 11 so as to drive the vehicle seat to reciprocate back and forth; two groups of driving assemblies 5 are shown, and respectively penetrate through the corresponding sliding guide rails 1, and the two groups of driving assemblies respectively penetrate through the sliding guide rail open grooves 12 upwards, and the two groups of driving assemblies 5 are respectively connected with the corresponding sliding mechanisms 4 and can drive the sliding mechanisms 4 to reciprocate; two anti-backlash locking mechanisms 6 are shown, which are respectively installed in the corresponding sliding guide rail inner cavities 11 and respectively connected with the two groups of driving assemblies 5, wherein the two anti-backlash locking mechanisms 6 can lock the sliding mechanism 4 in the sliding guide rail inner cavity 11 of the sliding guide rail 1 in a locking state, and the two anti-backlash locking mechanisms 6 can also eliminate the gaps existing between the sliding guide rail 1 and the sliding mechanism 4 in the vertical and horizontal directions.

In the present embodiment, a pair of decorative dust-proof strips 13 is fitted to the upper portion of the top plate of the slide rail 1, and the decorative dust-proof strips 13 extend in the longitudinal direction of the slide rail 1 and are symmetrically provided at both side positions of the slide rail open groove 12.

Further, a plurality of slide rail mounting holes 14 are provided at intervals in the longitudinal direction on the bottom plate of the slide rail 1.

Referring to fig. 2 and 3, each of the two sliding mechanisms 4 includes a pair of sliding plates 41 disposed inside the inner cavity 11 of the sliding guide rail, the pair of sliding plates 41 are symmetrically disposed, and a sliding guide wheel 42 is disposed at each of two ends of one side surface of the two sliding plates 41, and the sliding guide wheel 42 contacts with and can roll on the bottom plate of the sliding guide rail 1; a guide rod 43 is connected to the end positions of the two sliding plates 41 of one sliding mechanism 4 close to the driving assembly 5, and the guide rod 43 is connected with the driving assembly 5; a pair of sliding plate connecting protrusions 411 is further formed on the upper portions of the two sliding plates 41 of one sliding mechanism 4, and the two pairs of sliding plate connecting protrusions 411 are symmetrically arranged with the vertical center line of the sliding plate 41 as a symmetry axis.

In this embodiment, the driving components 5 each include a housing case 51, the housing case 51 downwardly protrudes into the inner cavity 11 of the sliding guide, the housing case 51 is composed of housings which are fastened to each other from left to right, the upper and lower ends of the housing case 51 are open, a rope pulling member 52, an upper positioning shaft 53, a driving plate 54 and a driven plate 55 which are hinged to the upper positioning shaft 53, a lower positioning shaft 56, and a driving plate 57 which is rotatably mounted on the lower positioning shaft 56 are sequentially disposed inside the housing case 51 from top to bottom, the lower end of the rope pulling member 52 is formed with a rope pulling head 521 which can move up and down under the action of external force, the axial ends of the upper positioning shaft 53 are respectively connected to the left and right housings of the housing case 51, and the end of the driving plate 54 close to the rope pulling member 52 is formed with a driving plate connecting portion 541, the rope pulling head 521 is inserted into the driving plate connecting portion 541, a driven plate connecting shaft 551 is installed on the driven plate 55 at a position corresponding to the upper portion of the driving plate connecting portion 541, a return torsion spring 531 is further sleeved on the shaft body of the upper positioning shaft 53, a driving plate protrusion 542 is convexly formed on the driving plate 54 at a position corresponding to one end of the return torsion spring 531, and the driving plate protrusion 542 abuts against one end of the return torsion spring 531; a tension spring 552 extending downward is provided on the driven plate connecting shaft 551, an upper end of the tension spring 552 is hooked on the driven plate connecting shaft 551, a lower end of the tension spring 552 is hooked on a plate body portion of the driving plate 57 which is offset from the middle portion thereof, both axial end portions of the lower positioning shaft 56 are connected to the left and right housings of the accommodating case 51, respectively, an upper end of the driving plate 57 abuts on a lower end of the driven plate 55, a middle portion of the driving plate 57 is hinged on the lower positioning shaft 56, a driving groove 571 is formed at a lower end of the driving plate 57, and the guide rod 43 of the slide mechanism 4 is fitted in the driving groove 571.

Further, the anti-backlash locking mechanism 6 includes a locking plate 61, a pair of linked hinge plates 62 disposed on both sides of the locking plate 61 in the length direction, and two anti-backlash members 63, a locking plate positioning rod 611 extending in the vertical direction is respectively disposed at the proximal end positions of both ends of the locking plate 61 in the length direction, a locking return spring 612 is respectively sleeved on the locking plate positioning rod 611, the locking return spring 612 is also disposed upward in the vertical direction and penetrates the locking plate 61 body, the diameter of the locking return spring 612 at the lowest end of the locking plate 61 is larger than the diameter of the body at the upper part of the locking plate 61, the locking return spring 612 is located at the lower part of the locking plate 61 and has a conical structure gradually contracting from bottom to top, the two linked hinge plates 62 have a hook-shaped structure, the middle parts of the linked hinge plates 62 are hinged with the sliding plates 41 on both sides by a hinge shaft, one end of the linked hinge plate 62 abuts against the downward side surface of the locking plate 61, the anti-backlash part 63 is in a T-shaped plate structure, the anti-backlash part 63 is provided with an anti-backlash part connecting rod 631 and a pair of anti-backlash sleeve blocks 632, the anti-backlash part connecting rod 631 is connected with one end of the linked hinge plate 62 away from the locking plate 61, and the two anti-backlash sleeve blocks 632 are respectively sleeved on the sliding plate connecting convex blocks 411 of the sliding plates 41 at two sides; when the sliding mechanism 4 is in the locked state, the anti-backlash sleeve block 632 is mounted on the end of the sliding plate connecting protrusion 411 away from the sliding plate 41 body in the length direction and can eliminate the gap between the sliding guide rail 1 and the sliding mechanism 4 in the up-down and left-right directions, so that when the seat is adjusted when the locking plate 61 is pressed by external force to move downward, the linked hinge plate 62 is driven downward by the locking plate 61 to turn over and drive the anti-backlash sleeve block 632 to move toward the inner side of the sliding plate connecting protrusion 411, so that a fit gap is generated between the anti-backlash sleeve block 632 and the sliding plate connecting protrusion 411 to realize smooth sliding.

Please refer to fig. 1 to fig. 3, which briefly describe the working principle of the technical solution provided by the present invention: firstly, during assembly, a vehicle seat is placed above the sliding track 1 and is mounted with two groups of sliding mechanisms 4 through fasteners such as bolts and the like; when a driver and a passenger move the seat back and forth according to the actual riding experience, the locking plate 61 of the locking mechanism 6 is pressed downwards by operating the external handle, so that the sliding mechanism 4 is in an unlocked state, at this time, the pull rope head 521 of the pull rope piece 52 of the driving assembly 5 is pulled and further drives the driving plate 54 and the driving plate 57 to move, so as to drive the guide rod 43 of the sliding mechanism 4 to move, and thus, the sliding plate 41 moves in the inner cavity 11 of the sliding guide rail and drives the seat to move back and forth.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the tasks of the utility model and truly realizes the technical effects of the applicant in the technical effect column.

Claims

1. A long slide rail device for a vehicle seat, characterized by comprising: the pair of strip-shaped sliding guide rails (1) are symmetrically arranged at two sides of a vehicle body bottom plate, both the sliding guide rails are provided with sliding guide rail inner cavities (11) penetrating through the length direction of the vehicle body bottom plate, and one side surface of the sliding guide rail (1) facing upwards is provided with a sliding guide rail open slot (12) extending along the length direction of the sliding guide rail open slot; a pair of strip-shaped wire harness guide rails (2) which are arranged at the middle position of the floor of the vehicle body, are parallel to the sliding guide rail (1), and can be used for containing wire harness pipelines; the pair of wire harness sliding guide modules (3) are respectively arranged in the wire harness guide rails (2) corresponding to the wire harness sliding guide modules and can drive a wire harness pipeline for accommodating a wire harness connected with the seat electronic component to move; the two sliding mechanisms (4) are connected and installed with the vehicle seat framework, and the two sliding mechanisms (4) are respectively arranged in the sliding guide rail inner cavities (11) corresponding to the two sliding mechanisms and can slide back and forth in the sliding guide rail inner cavities (11); the two groups of driving components (5) are respectively arranged in the corresponding sliding guide rails (1) in a penetrating manner, and penetrate out of the sliding guide rail open grooves (12) upwards respectively, and the two groups of driving components (5) are respectively connected with the corresponding sliding mechanisms (4) respectively and can drive the sliding mechanisms (4) to reciprocate; the two anti-backlash locking mechanisms (6) are respectively installed in the corresponding sliding guide rail inner cavities (11) and are respectively connected with the two groups of driving assemblies (5), the two anti-backlash locking mechanisms (6) can lock the sliding mechanisms (4) in the sliding guide rail inner cavities (11) of the sliding guide rails (1) in a locking state, and gaps existing between the sliding guide rails (1) and the sliding mechanisms (4) in the vertical and left-right directions can be eliminated through the two anti-backlash locking mechanisms (6).

2. The long rail device for vehicle seats according to claim 1, wherein a pair of decorative dust-proof strips (13) are fitted to the upper portion of the top plate of the slide rail (1), the decorative dust-proof strips (13) extending in the longitudinal direction of the slide rail (1) and being symmetrically disposed at both side positions of the slide rail opening groove (12).

3. The long rail device for vehicle seats according to claim 1, wherein a plurality of mounting holes (14) for slide rails are provided at intervals along the longitudinal direction of the bottom plate of the slide rail (1).

4. The long slide rail device for the vehicle seat according to claim 1, wherein each of the two slide mechanisms (4) comprises a pair of slide plates (41) disposed inside the inner cavity (11) of the slide rail, the pair of slide plates (41) are symmetrically disposed, and a slide guide (42) is disposed at each of both ends of a side surface of the two slide plates (41) opposite to each other, the slide guide (42) is in contact with and capable of rolling on a bottom plate of the slide rail (1); a guide rod (43) is connected to the end parts of the two sliding plates (41) of one sliding mechanism (4) close to the driving component (5), and the guide rod (43) is connected with the driving component (5); a pair of sliding plate connecting convex blocks (411) is further formed on the upper parts of the two sliding plates (41) of one sliding mechanism (4), and the two pairs of sliding plate connecting convex blocks (411) are symmetrically arranged by taking the vertical central line of the sliding plates (41) as a symmetry axis.

5. The long rail device for vehicle seats according to claim 1, wherein the driving units (5) each comprise a receiving case (51), the receiving case (51) is downwardly inserted into the inner cavity (11) of the sliding rail, the receiving case (51) is formed of a case body which is fastened to each other in a left-right direction, both upper and lower end portions of the receiving case (51) are opened, a wire pulling member (52), an upper positioning shaft (53), a driving plate (54) and a driven plate (55) which are hinged to the upper positioning shaft (53), a lower positioning shaft (56), and a driving plate (57) which is rotatably installed on the lower positioning shaft (56) are sequentially provided in the receiving case (51) from top to bottom, and a wire pulling head (521) which can move up and down by an external force is formed at a lower end portion of the wire pulling member (52), the end parts of two axial ends of the upper positioning shaft (53) are respectively connected with a left shell and a right shell of the containing box body (51), one end part of the driving plate (54) close to the pull rope piece (52) is provided with a driving plate connecting part (541), the pull rope head (521) is arranged in the driving plate connecting part (541) in a penetrating way, a driven plate connecting shaft (551) is arranged on the driven plate (55) and at the upper part corresponding to the driving plate connecting part (541), a reset torsion spring (531) is sleeved on the shaft body of the upper positioning shaft (53), a driving plate bulge (542) is convexly arranged on the driving plate (54) and at the position corresponding to one end part of the reset torsion spring (531), and the driving plate bulge (542) is abutted against one end part of the reset torsion spring (531); the driven plate connecting shaft (551) is further provided with an extension spring (552) which extends downwards, the upper end part of the extension spring (552) is hooked on the driven plate connecting shaft (551), the lower end part of the extension spring (552) is hooked on a plate body part which is arranged on the upper part of the middle part of the driving plate (57), the two axial end parts of the lower positioning shaft (56) are respectively connected with the left shell and the right shell of the accommodating box body (51), the upper end part of the driving plate (57) is abutted against the lower end part of the driven plate (55), the middle part of the driving plate (57) is hinged on the lower positioning shaft (56), a driving groove (571) is formed at the lower end part of the driving plate (57), and the guide rod (43) of the sliding mechanism (4) is installed in the driving groove (571) in a matching way.

6. The long slide rail device for the vehicle seat according to claim 1, wherein the anti-backlash locking mechanism (6) comprises a locking plate (61), a pair of linked hinge plates (62) disposed at both sides of the locking plate (61) in the length direction, and two anti-backlash members (63), locking plate positioning rods (611) extending in the vertical direction are respectively disposed at the proximal end positions of both ends of the locking plate (61) in the length direction, a locking return spring (612) is respectively sleeved on the locking plate positioning rods (611), the locking return spring (612) is also disposed upward in the vertical direction and penetrates through the body of the locking plate (61), the diameter of the locking return spring (612) at the lowest end of the locking plate (61) is larger than the diameter of the body at the upper part of the locking plate (61), and the locking return spring (612) at the lower part of the locking plate (61) is in a conical structure gradually shrinking from bottom to top The two linkage hinge plates (62) are in a hook-shaped structure, the middle parts of the linkage hinge plates (62) are hinged with the sliding plates (41) on two sides through a hinge shaft, one end parts of the linkage hinge plates (62) abut against one side surface of the locking plate (61) facing downwards, the anti-backlash parts (63) are in a T-shaped plate structure, each anti-backlash part (63) is provided with an anti-backlash part connecting rod (631) and a pair of anti-backlash sleeve blocks (632), the anti-backlash part connecting rod (631) is connected with one end part of each linkage hinge plate (62) far away from the locking plate (61), and the two anti-backlash sleeve blocks (632) are respectively sleeved on the sliding plate connecting convex blocks (411) of the sliding plates (41) on two sides.