Middle-mounted automobile seat sliding rail

Abstract

The invention discloses a mid-set type automobile seat sliding rail, and relates to the field of automobile seat sliding rails, the mid-set type automobile seat sliding rail comprises a bottom plate, sliding rail assemblies arranged on the bottom plate in parallel and a cover plate installed between the two sliding rail assemblies, the cover plate, the sliding rail assemblies and the bottom plate form a closed space, and a driving assembly sliding in the closed space is arranged between the two sliding rail assemblies; the driving assembly comprises a transmission piece arranged on the sliding rail assembly and a driving piece arranged in the closed space in a sliding mode. The transmission part comprises a sliding rail installed on the bottom plate, a sliding block arranged on the sliding rail in a sliding mode, supports located at the two ends of the sliding rail and a lead screw arranged between the two supports, a clamping groove is formed in the sliding block, a gear box is arranged on the clamping groove, and a gear assembly used for driving and connecting the lead screw is arranged in the gear box; the driving piece drives the driving piece and the sliding blocks on the two sides to synchronously move in the length direction of the sliding rails. The stability, the dustproof performance and the running smoothness of the middle-mounted automobile seat sliding rail structure are improved, and noise is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile seat slide rails, and in particular to a center-mounted automobile seat slide rail. Background Art

[0002] In the automotive industry, car seats are a crucial component, their design and performance directly impacting the comfort and safety of drivers and passengers. With the continuous development of the automotive industry, consumers are placing higher demands on the functionality and quality of car seats. Especially in commercial vehicles, where longer bodies create more stringent standards for seat adjustment range and stability, the position adjustment function of car seats can meet the needs of different passengers and enhance ride comfort. Therefore, the development of car seat slide technology is particularly important.

[0003] Existing automotive seat rail adjustment technology typically utilizes a screw-gearbox transmission system to adjust the seat's position on the vehicle body. This transmission method is common in applications with traditional rail lengths and is a relatively mature technology in the industry. Furthermore, existing automotive seats are typically short, and the rails are located above the floor. However, specialized requirements, such as those for commercial vehicles, require longer rails for seat adjustment. These long rails cannot be installed above the floor, as this would affect the exterior appearance and the smoothness of the interior space.

[0004] However, the existing car seat slide technology has obvious defects. When the slide rail length exceeds a certain limit, if the slide rail is installed under the floor, according to the traditional motor driving the gear box gear transmission, the screw is under the floor, the transmission height increases, and multiple transmission components need to be added, which in turn generates abnormal noise during movement and cannot meet the use requirements of commercial vehicles for long slide rails. Summary of the Invention

[0005] In order to improve the problem of abnormal noise and smooth operation of the long slide rail of the car seat, the present application provides a centrally mounted car seat slide rail.

[0006] The present application provides a mid-mounted car seat slide rail adopting the following technical solution: A mid-mounted car seat slide rail comprises a base plate, a slide rail assembly arranged parallel to the base plate, and a cover plate installed between the two slide rail assemblies, wherein the cover plate, the slide rail assembly and the base plate form a closed space, and a drive assembly sliding in the closed space is arranged between the two slide rail assemblies; wherein the drive assembly comprises a transmission member arranged on the slide rail assembly and a drive member slidably arranged in the closed space; the transmission member comprises a slide rail installed on the base plate, a slider slidingly arranged on the slide rail, supports located at both ends of the slide rail and a screw rod arranged between the two supports, a slot is provided on the slider, a gear box is provided on the slot, and a gear assembly for driving the connecting screw rod is provided inside the gear box; the drive member drives itself and the sliders on both sides to move synchronously along the length direction of the slide rail.

[0007] By adopting the above technical solution, the gearbox and transmission parts of the overall transmission are located in a closed space, which reduces the noise of the car seat slide rail during adjustment. At the same time, it also protects the gearbox and transmission parts, preventing external debris from entering the slide rail assembly to avoid affecting the normal use of the slide rail assembly. Since the gearbox is installed on the slider, the overall worm and worm gear transmission distance is relatively short, and fewer gear assemblies are required for transmission, thereby reducing the occurrence of abnormal noise. The gearbox is located on the slider, and the driving part drives the gear assembly in the gearbox to transmit. The gear assembly drives the slider to move along the length direction of the slide rail assembly. During the movement, the gears and assemblies of the gearbox and the output shaft of the driving part remain coaxial. The car seat on the slide rail assembly moves more firmly with the slider, ensuring sliding stability, effectively solving the problem that long slide rails are easy to bend, have large winding and produce abnormal noise, and extending the service life of the slide rail.

[0008] Optionally, the driving member includes a dual-shaft brushless motor installed in a closed space, and the output shaft of the dual-shaft brushless motor is connected to the gear assembly.

[0009] By adopting the above technical solution and using a dual-axis brushless motor, the sliding of the slide rail assemblies on both sides is controlled synchronously, which helps to ensure the synchronization of the drive.

[0010] Optionally, a plastic part is installed on the dual-axis brushless motor, a connecting plate is connected to the plastic part, and the connecting plate is also connected to the slider, and the plastic part is in a shell structure.

[0011] By adopting the above technical solution, plastic parts are used to load the dual-axis brushless motor, maintain the stability of the connection of the dual-axis brushless motor, enhance the connection stability between the driving parts and the transmission parts, and improve the stability and reliability of the automobile seat slide drive system.

[0012] Optionally, the slide rail assembly includes a crossbeam installed on a slider for fixing the seat, partitions are installed on both sides of the crossbeam, the crossbeam is slidably arranged in a groove formed by the partitions on both sides, a baffle for dust prevention is rotatably arranged in the groove, the length of the baffle is equal to the width of the groove, and blocks for prying the baffle are provided at both ends of the crossbeam.

[0013] By adopting the above technical solution, the crossbeam of the slide rail assembly is installed on the slider and can slide in the groove formed by the partitions on both sides. The baffle arranged rotatably in the groove can play a dust-proof role. The shift blocks at both ends of the crossbeam can pry the baffle to allow the crossbeam to move smoothly in the groove, effectively preventing dust from entering the interior of the slide rail assembly and affecting its normal operation, thereby ensuring the stability and service life of the slide rail assembly.

[0014] Optionally, a wiring harness box is provided between adjacent slide rail assemblies. The wiring harness box is in a regular rectangular shape and is located in a closed space or is provided on the outside of the two slide rails.

[0015] By adopting the above technical solution, the wiring harness box is placed in the closed space between the slide rail assemblies or installed on the outside of the slide rails, which reduces the space occupied by the wiring harness box and improves the utilization rate of the closed space.

[0016] Optionally, the end of the shift block is set at an acute angle, the sharp part of the shift block abuts against the bottom of the baffle, and the width of the shift block is smaller than the width of the groove.

[0017] By adopting the above technical solution, the sharp-angled shift block makes it easier for the crossbeam to pry the baffle when moving. The width of the shift block is slightly smaller than the width of the groove, ensuring that the shift block moves smoothly in the groove and ensures smooth sliding of the crossbeam and the car seat.

[0018] Optionally, the gear assembly includes a worm mounted on the output shaft of the dual-axis brushless motor, a worm wheel engaged with the worm, and a thread passing through the center of the worm wheel, and the internal thread of the worm wheel cooperates with the thread of the lead screw.

[0019] By adopting the above technical solution, the output shaft of the dual-axis brushless motor drives the worm gear, the worm gear drives the worm wheel to rotate, and the worm wheel rotates along the direction of the lead screw thread, so that the driving part and the slider move along the length direction of the slide rail, meeting the movement requirements of the car seat.

[0020] Optionally, reinforcing ribs for maintaining rigidity are integrally formed on the end surface of the cover plate.

[0021] By adopting the above technical solution, the rigid design of the cover plate is maintained, thereby improving the overall stability and durability.

[0022] Optionally, each side of the slide rail assembly is provided with at least two crossbeams, and each crossbeam is provided with at least two sliding blocks.

[0023] By adopting the above technical solution, the stability of the car seat moving on the slide rail is enhanced, making the car seat more stable when adjusted and moved.

[0024] Optionally, a support roller is provided on the slider along the moving direction of the slide rail, and the bottom plane of the partition is in contact with the support roller.

[0025] By adopting the above technical solution, an axis is fixed with bolts on the slider of each seat where the gear box is not installed, and a roller is installed on the axis. The bottom plane of the aluminum alloy bar is in contact with the roller to support the strength of the aluminum alloy plate, and one is set on each side of each seat.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The gearbox and transmission parts of the integral transmission are located in a closed space, which reduces the noise during the adjustment of the car seat slide rail and protects the gearbox and transmission parts, preventing external debris from entering the slide rail assembly and affecting its normal use; 2. The gearbox is installed on the slider, which makes the overall transmission distance relatively short and requires fewer gear components to be transmitted, reducing the occurrence of abnormal noise. The gear components in the gearbox and the output shaft of the driving component remain coaxial and stable, making the car seat move more firmly with the slider, ensuring sliding stability, effectively solving the problems of long slide rails being easy to bend and making loud winding noise, and extending the service life of the slide rails. 3. A dual-axis brushless motor is used to synchronously control the sliding of the slide rail assemblies on both sides, helping to ensure drive synchronization; 4. The gearbox is installed on the slider in the enclosed space, and the dual-axis brushless motor is built into the enclosed space. When the slider, beam and car seat move along the length of the slide rail, the relative transmission height is reduced, ensuring the comfort of the car seat, improving the passenger's physical experience, and making the cost relatively controllable economically. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram showing the overall structure of this application.

[0029] Figure 2 This is a schematic diagram showing the local structure of this application.

[0030] Figure 3 It is a structural diagram of the slider displayed in this application.

[0031] Figure 4 This application displays Figure 2 A-direction enlarged view.

[0032] Figure 5 It is a cross-sectional view showing the front side of this application.

[0033] Figure 6 It is an exploded view showing the overall structure of this application.

[0034] Figure numerals: 1. Base plate; 2. Slide rail assembly; 3. Cover plate; 4. Enclosed space; 5. Drive assembly; 51. Transmission part; 52. Drive part; 511. Slide rail; 512. Slider; 513. Support; 514. Screw rod; 515. Slot; 516. Gear box; 521. Dual-axis brushless motor; 6. Plastic part; 7. Connecting plate; 21. Crossbeam; 22. Partition; 23. Groove; 24. Baffle; 25. Shift block; 8. Wire harness box; 9. Steel ball; 10. Reinforcement rib; 11. Support roller. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 6 This application is described in further detail.

[0036] The embodiment of the present application discloses a center-mounted automobile seat slide rail.

[0037] See also Figure 1 、 Figure 4 and Figure 6 As shown, it includes a base plate 1, a slide rail assembly 2 arranged parallel to the base plate 1, a cover plate 3 installed between the two slide rail assemblies 2, and a drive assembly 5 arranged between the two slide rail assemblies 2 and sliding in a closed space 4, wherein the base plate 1, the slide rail assembly 2 and the cover plate 3 form a closed space 4, and the drive assembly 5 slides in this closed space 4. This design enables the gear box 516 and the transmission member 51 of the overall transmission to be located in the closed space 4, reducing the noise of the car seat slide rail 511 during adjustment, and at the same time protecting the gear box 516 and the transmission member 51 to prevent external debris from entering the slide rail assembly 2 and affecting the normal use of the slide rail assembly 2.

[0038] See also Figure 3 and Figure 6As shown, the drive assembly 5 includes a transmission member 51 provided on the slide rail assembly 2 and a drive member 52 slidably arranged in the enclosed space 4. The transmission member 51 includes a slide rail 511 mounted on the base plate 1, a slider 512 slidably provided on the slide rail 511, supports 513 located at both ends of the slide rail 511, and a screw 514 provided between the two supports 513. The slider 512 is in the shape of a rectangular block. The bottom of the slider 512 is provided with a slide groove adapted to the slide rail 511 so that it can slide smoothly on the slide rail 511. A slot 515 is provided on the side of the slider 512 close to the drive member 52. The slot 515 is a rectangular groove for mounting a gear box 516. Gearbox 516 is internally provided with a gear assembly for driving the connecting screw 514. The detailed structure of the gear assembly within gearbox 516 can be found in authorization publication number CN218408412U, which specifically discloses the detailed transmission principle and structural schematic, and is therefore not shown in the schematic diagram. The gear assembly includes a worm mounted on the output shaft of the dual-axis brushless motor 521, a worm wheel meshing with the worm, and a thread extending through the center of the worm wheel. The internal threads of the worm wheel mate with the threads of the screw 514, and the inner diameter of the worm wheel sleeve is larger than that of the threaded sleeve. The output shaft of the dual-axis brushless motor 521 drives the worm, which in turn drives the worm wheel sleeve to rotate. The threaded sleeve rotates along the thread direction of the screw 514, causing the drive member 52 and the slider 512 to move along the length of the slide rail 511, meeting the movement requirements of the car seat.

[0039] See also Figure 4 As shown, the driving member 52 is arranged near one side of the slide rail assembly 2. The driving member 52 drives itself and the sliders 512 on both sides to move synchronously along the length direction of the slide rail 511. The driving member 52 includes a dual-axis brushless motor 521 installed in the enclosed space 4. The dual-axis brushless motor 521 has the advantages of good speed regulation performance, high efficiency, and long life. Of course, other types of motors such as stepping motors can also be used instead. The output shaft of the dual-axis brushless motor 521 is connected to the gear assembly. The use of the dual-axis brushless motor 521 can synchronously control the sliding of the slide rail assemblies 2 on both sides, which helps to ensure the synchronization of the drive. A plastic part 6 is installed on the dual-axis brushless motor 521. The plastic part 6 is generally made of high-strength engineering plastics, such as polycarbonate, and has the advantages of light weight and good insulation. The plastic part 6 is a shell structure used to load the dual-axis brushless motor 521 and maintain the stability of the connection of the dual-axis brushless motor 521. A connecting plate 7 is connected to the plastic part 6, and the two can be connected by bolt fastening. The connecting plate 7 is bent at a right angle and has threaded holes at both ends. The connecting plate 7 is usually stamped from a metal plate. The connecting plate 7 is also connected to the slider 512 by bolts, which enhances the connection stability between the driving part 52 and the transmission part 51, and improves the stability and reliability of the car seat slide rail 511 drive system.

[0040] See also Figure 2As shown, the slide rail assembly 2 includes a crossbeam 21 bolted to the slider 512. The top of the crossbeam 21 is used to connect to the car seat. The crossbeam 21 is generally stamped from a metal sheet and has a certain strength and rigidity. The baffles 24 are arranged in a rotatable manner in the groove 23 to prevent dust from entering the enclosed space 4.

[0041] See also Figure 2 and Figure 5 As shown, both ends of the crossbeam 21 are provided with shift blocks 25 for prying the baffle 24. The ends of the shift blocks 25 are set at acute angles. The sharp angles of the ends of the shift blocks 25 are generally between 10° and 30°. The sharp parts of the shift blocks 25 abut against the bottom of the baffle 24. The acute-angled shift blocks 25 make it easier for the crossbeam 21 to pry the baffle 24 when moving, ensuring that the shift blocks 25 move smoothly in the groove 23 and ensuring smooth sliding of the crossbeam 21 and the car seat. The width of the shift block 25 is smaller than the width of the groove 23, which facilitates the movement of the baffle 24. The crossbeam 21 of the slide rail assembly 2 is installed on the slider 512 and can slide in the groove 23 formed by the partitions 22 on both sides. The baffle 24 rotatably arranged in the groove 23 can play a dust-proof role. The shift blocks 25 at both ends of the crossbeam 21 can pry the baffle 24 to allow the crossbeam 21 to move smoothly in the groove 23, effectively preventing dust from entering the interior of the slide rail assembly 2 and affecting its normal operation, thereby ensuring the stability and service life of the slide rail assembly 2.

[0042] In addition, see Figure 1 As shown, a wiring harness box 8 is arranged between two adjacent slide rail assemblies 2. The wiring harness box 8 is placed in a closed space. The wiring harness box 8 is a regular rectangular shape. The length of the wiring harness box 8 is equal to the length of the slide rail 511. It is generally made of plastic injection molding. The wiring harness box 8 is located in the closed space, or the wiring harness box 8 is installed on the outside of the two slide rails 511. This also avoids the wiring harness box occupying too much usable space, improves the utilization rate of the closed space, and can reduce material usage costs.

[0043] See also Figure 5 and Figure 6As shown, the slider 512 is also provided with steel balls 9 for guidance. There are four steel balls 9, which pass through the slider 512 and are evenly arranged on both sides of the slide rail 511. The steel balls 9 can provide guidance for the movement of the slider 512 along the slide rail 511, thereby ensuring the stability and accuracy of the movement of the slider 512, further improving the stability of the center-mounted car seat slide rail 511, reducing the occurrence of failures or wear caused by the movement deviation of the slider 512, and improving the service life of the car seat slide rail 511.

[0044] See also Figure 1 As shown, the end face of the cover plate 3 is integrally formed with a reinforcing rib 10 for maintaining rigidity. The setting of the reinforcing rib 10 maintains the rigid design of the cover plate 3, thereby improving the overall stability and durability. Each side slide rail assembly 2 is provided with at least two beams 21 for fixing the seat, and each beam 21 is provided with at least two sliders 512. Increasing the number of beams 21 and sliders 512 enhances the stability of the car seat moving on the slide rail 511, making the car seat more stable when adjusted and moved. The sliders 512 can be set at both ends of the bottom of the beam 21, or at the middle of the bottom of the beam 21, or multiple sliders 512 can be set at the bottom of the beam 21. Combined with the actual load-bearing stability and cost of the actual product, appropriate adjustments are made to beams 21 of different lengths; two groups of beams 21 are provided, resulting in at least one group of front and rear rows of car seats, and each group of car seats can be independently adjusted when moving separately.

[0045] See also Figure 2 As shown, the slider 512 is provided with a support roller 11 for rotation along the moving direction of the slide rail 511. The support roller 11 is in contact with the bottom plane of the partition 22. The partition 22 is a strip structure made of aluminum alloy, and one is provided on each side of each seat. An axis is fixed with bolts on the slider 512 of each seat that is not equipped with a gear box 516. A roller is rotatably provided on the axis. The roller is in contact with the bottom plate 1 made of aluminum alloy and is used to support the strength of the aluminum alloy plate.

[0046] The implementation principle of a mid-mounted car seat slide rail in an embodiment of the present application is as follows: by arranging the driving parts that drive the car seat to slide along the slide rail, namely the dual-axis brushless motor and the gear box, both are arranged in a closed space 4, thereby effectively reducing the noise of the car seat during adjustment, protecting the transmission parts from interference from external debris, and the cooperation between the dual-axis brushless motor 521 and the gear assembly realizes the synchronous movement of the sliders 512 on both sides, thereby ensuring the synchronization of the drive; the assembly of the crossbeam 21, the baffle 24 and the shift block 25 prevents dust from entering the interior of the slide rail assembly 2, thereby improving the stability and service life of the slide rail assembly 2, effectively solving the problem that the long slide rail 511 is easy to bend and has high flexibility, thereby extending the service life of the slide rail 511 and improving the user experience of the car seat.

[0047] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A center-mounted car seat slide rail, characterized by: The invention comprises a base plate (1), a slide rail assembly (2) arranged parallel to the base plate (1), and a cover plate (3) installed between the two slide rail assemblies (2); the cover plate (3), the slide rail assembly (2) and the base plate (1) form a closed space (4); and a driving assembly (5) is arranged between the two slide rail assemblies (2) and slides in the closed space (4); The driving assembly (5) comprises a transmission member (51) provided on the slide rail assembly (2) and a driving member (52) slidably arranged in the closed space (4); The transmission member (51) comprises a slide rail (511) mounted on the base plate (1), a slider (512) slidably mounted on the slide rail (511), supports (513) located at both ends of the slide rail (511), and a screw rod (514) disposed between the two supports (513); a slot (515) is provided on the slider (512); a gear box (516) is provided on the slot (515); a gear assembly for driving the screw rod (514) is provided inside the gear box (516); The driving member (52) drives itself and the sliders (512) on both sides to move synchronously along the length direction of the slide rail (511).

2. The center-mounted car seat slide rail according to claim 1, characterized in that: The driving member (52) comprises a dual-shaft brushless motor (521) installed in the closed space (4), and the output shaft of the dual-shaft brushless motor (521) is connected to a gear assembly.

3. The center-mounted car seat slide rail according to claim 2, characterized in that: A plastic part (6) is mounted on the dual-axis brushless motor (521), a connecting plate (7) is connected to the plastic part (6), and the connecting plate (7) is also connected to the slider (512), and the plastic part (6) is in a shell structure.

4. The center-mounted car seat slide rail according to claim 1, characterized in that: The slide rail assembly (2) includes a crossbeam (21) mounted on a slider (512) for fixing a seat, partitions (22) being mounted on both sides of the crossbeam (21), the crossbeam (21) being slidably arranged in a groove (23) formed by the partitions (22) on both sides, a baffle (24) for preventing dust being rotatably arranged in the groove (23), the length of the baffle (24) being equal to the width of the groove (23), and a shifting block (25) for prying the baffle (24) being provided at both ends of the crossbeam (21).

5. The center-mounted car seat slide rail according to claim 1, characterized in that: A wiring harness box (8) is provided between adjacent slide rail assemblies (2), wherein the wiring harness box (8) is in a regular rectangular shape and is located in the closed space (4) or is provided outside the two slide rails (511).

6. The center-mounted car seat slide rail according to claim 4, characterized in that: The end of the shift block (25) is arranged at an acute angle, the sharp portion of the shift block (25) abuts against the bottom of the baffle (24), and the width of the shift block (25) is smaller than the width of the groove (23).

7. The center-mounted car seat slide rail according to claim 1, characterized in that: The gear assembly comprises a worm mounted on the output shaft of a dual-axis brushless motor (521), a worm wheel meshed with the worm, and a thread running through the center of the worm wheel, wherein the internal thread of the worm wheel is threadably matched with the lead screw (514).

8. The center-mounted car seat slide rail according to claim 1, characterized in that: A reinforcing rib (10) for maintaining rigidity is integrally formed on the end surface of the cover plate (3).

9. The center-mounted car seat slide rail according to claim 1, characterized in that: The slide rail assembly (2) on each side is provided with at least two crossbeams (21) for fixing the seat, and each crossbeam (21) is provided with at least two sliding blocks (512).

10. The center-mounted car seat slide rail according to claim 1, characterized in that: A support roller (11) is provided on the slider (512) along the sliding direction of the slide rail (511), and the bottom plane of the partition (22) is in contact with the support roller (11).

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