Long sliding rail mechanism for automobile seat

Abstract

The invention discloses a long sliding rail mechanism for an automobile seat, and belongs to the technical field of automobile seat accessories. The mechanism comprises a sliding rail and a sliding plate, wherein the sliding plate is restrained in the sliding rail and is in sliding fit; the ejector block is positioned on the sliding plate; an adjusting gasket is arranged between the sliding plate and the ejector block. Multiple oil grooves perpendicular to the extending direction of the sliding rail are formed in the outer surface of the ejector block. The top of the sliding rail is open, and the sliding plate is of an inverted-T-shaped structure and provided with rolling wheels. The inner contour of the sliding rail is provided with an upper cambered surface, an inner top protrusion and a lower cambered surface. An extension section is arranged on the side or the end portion of the sliding rail, and the adapter plate is connected with the extension section through a bolt assembly. A dustproof assembly is arranged at an opening of the sliding rail and comprises a double-open counter-pulling zipper and dust shielding cloth, and the dust shielding cloth is fixed through a locking mechanism composed of an inverted-L-shaped plate, a locking groove, a positioning groove and a lock head. The invention has the advantages of adjustable gap, good lubrication, smooth sliding, efficient dust prevention, convenient maintenance, strong adaptability and the like.

Description

Technical Field

[0001] This invention relates to the field of automotive seat adjustment device technology, and more specifically to a long slide rail mechanism for automotive seats. Background Technology

[0002] The sliding rail mechanism of a car seat is a key component for adjusting the seat's fore-and-aft position, and its performance directly affects passenger comfort and ease of adjustment. Traditional sliding rail mechanisms typically employ a simple sliding plate and rail combination structure, which presents the following technical problems: First, the gap between the slide plate and the rail is prone to wear during long-term use, leading to poor sliding, noticeable wobbling, and abnormal noise, severely impacting the riding experience and seat lifespan. Second, because the rails typically employ an open or semi-open structure, dust, sand, and other foreign objects can easily enter the rail, accelerating wear on the friction pair and further affecting sliding performance. Third, existing rail structures often lack effective gap adjustment mechanisms, failing to compensate for wear during use, resulting in a gradual decrease in fit precision. Finally, traditional rail dustproofing measures are mostly simple sealing strips or fixed dust covers, offering limited dustproofing and being inconvenient to maintain and replace, making it difficult to achieve effective dust protection and long-term stable operation.

[0003] Currently, to address the aforementioned issues, the industry has explored various improvement solutions, such as using ball or roller structures to reduce the coefficient of friction, adding wear-resistant coatings to extend service life, and installing dust covers to prevent foreign objects from entering. However, these solutions still have some shortcomings in practical applications: while ball or roller structures can improve sliding performance, they increase structural complexity and manufacturing costs; although wear-resistant coatings can slow down wear, they cannot fundamentally solve the problem of clearance; and simple dust covers are difficult to completely seal the slide rail openings and may affect the normal movement of the skateboard or increase sliding resistance.

[0004] Therefore, how to provide a long slide rail mechanism for automotive seats that is structurally sound, operates smoothly, has good dustproof performance, and is easy to maintain has become an urgent technical problem to be solved in this field. In particular, there is a need for a new type of slide rail mechanism that can effectively eliminate fit clearances, maintain long-term lubrication, prevent foreign object intrusion, and is easy to maintain, in order to meet the requirements of modern automotive seats for high performance, high reliability, and long service life. Summary of the Invention

[0005] The purpose of this invention is to provide a long slide rail mechanism for automobile seats that is compact in structure, runs smoothly, has good dustproof effect, and is easy to install and maintain.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A long slide rail mechanism for an automobile seat includes a slide rail and a slide plate, the slide plate being constrained within the slide rail and the two slidingly engaged; it also includes a top block; the top block is located on the slide plate; the cross-section of the slide rail is a semi-enclosed structure, the top block and the slide plate are located within the area enclosed by the slide rail, wherein the top block abuts against the inner top surface of the slide rail; an adjustment shim is provided between the slide plate and the top block.

[0007] As a further improvement, the outer surface of the top block is provided with multiple parallel oil grooves, and the plane in which each oil groove is located is perpendicular to the extension direction of the slide rail.

[0008] Further improvements include an opening at the top of the slide rail; a U-shaped sliding plate with its sides constrained within the slide rail and adapted to the inner contour of the slide rail, and the middle portion of the sliding plate protruding from the opening of the slide rail; and rollers provided on the sliding plate, which slide on the inner bottom surface of the slide rail.

[0009] In a further improvement, the inner contour of the slide rail has an upper arc surface, an inner top protrusion, and a lower arc surface; wherein the top block abuts against the upper arc surface, the end of the inner top protrusion is located at the top of the outer side of the roller, and the lower arc surface is located at the bottom of the outer side of the roller.

[0010] Further improvements include an adapter plate connected to the bottom of the slide rail; the slide rail has an extension section on its side, and the adapter plate and the extension section are connected by a bolt assembly.

[0011] In a further improvement, the bottom surface of the slide rail is provided with a top protrusion, and the top surface of the adapter plate is provided with a bottom recess; the top protrusion and the bottom recess are opposite to form a space for installing fixing screws, wherein the fixing screws are used to fix the adapter plate to the frame.

[0012] Further improvements include a lead screw and a drive assembly, wherein both ends of the lead screw are fixed inside the slide rail and are parallel to the slide rail; the drive assembly is mounted on the slide plate, and the drive nut in the drive assembly is threadedly connected to the lead screw.

[0013] In a further improvement, a dustproof component is provided at the opening of the slide rail. The dustproof component includes a double-opening reverse-pull zipper and two dust-proof cloths. The two dust-proof cloths are connected by the double-opening reverse-pull zipper, and the two pull heads of the double-opening reverse-pull zipper are respectively connected to the two ends of the slide plate. The dust-proof cloths are connected to the upper surface of the slide rail by a locking structure.

[0014] Furthermore, the locking mechanism includes an inverted L-shaped plate and a locking groove located on the top of the slide rail; The dust cover is provided with a lock on its fixed side; the lock is located in the positioning groove at the top of the slide rail, and the inverted L-shaped plate is located at the positioning groove, with part of it placed horizontally above the lock to prevent the lock from coming out; The inverted L-shaped plate has the freedom to move up and down within its groove.

[0015] Furthermore, a locking groove is provided on one side of the positioning groove, wherein the locking groove and the positioning groove are parallel to each other, and the locking groove is located inside the corresponding positioning groove; The vertical portion of the inverted L-shaped plate is located in the locking groove, and its horizontal portion is located above the positioning groove, blocking part of the groove opening of the positioning groove. The dust-proof cloth extends from the positioning groove toward the double-opening reverse pull zipper and is located at the top of the inverted L-shaped plate; The top of the positioning groove has a retaining edge facing the inverted L-shaped plate on the side away from the inverted L-shaped plate; the width of the opening left at the top of the positioning groove is greater than the width of the lock head.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following significant advantages: Adjustable gap and smooth operation: By setting the top block to abut against the inner top surface of the slide rail and setting an adjustment shim between the slide plate and the top block, the fit gap between the slide plate and the slide rail can be precisely adjusted and eliminated, effectively reducing shaking and abnormal noise, and improving the stability and comfort of seat adjustment.

[0018] Good lubrication: Multiple oil grooves perpendicular to the extension direction of the slide rail are set on the outer surface of the top block, which facilitates the storage and uniform distribution of lubricating oil, significantly reduces sliding friction, and extends the service life of the mechanism.

[0019] Smooth and reliable sliding: The design of the slide rail with the convex-shaped slide plate and built-in rollers ensures the compactness of the structure and enables the rollers to roll smoothly on the inner bottom surface of the slide rail, improving the ease and reliability of sliding.

[0020] Modular connection design: The adjustable connection between the adapter plate and the slide rail, as well as the hidden screw installation space formed by the top convex and bottom concave fit, improves the convenience of installation and the reliability of connection, while maintaining a clean appearance.

[0021] Highly efficient and maintainable dustproof system: The innovative dustproof component design uses a double-opening reverse pull zipper to connect two dustproof cloths, combined with a simple and reliable locking structure (inverted L-shaped plate and positioning groove), which can effectively prevent foreign objects from entering the slide rail and facilitate the quick removal and replacement of the dustproof cloths, greatly improving maintenance convenience.

[0022] Compact structure and highly adaptable: The overall structure is reasonably designed, and each functional module is clear and independent. It can be flexibly configured according to different vehicle models and seat requirements, and has good versatility and adaptability. Attached Figure Description

[0023] Figure 1 This is an overall structural diagram of Embodiment 1 of the present invention.

[0024] Figure 2This is a side view of Embodiment 1 of the present invention.

[0025] Figure 3 This is a schematic diagram of the skateboard structure according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the mating structure of the drive assembly and the lead screw according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the slide rail structure according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the top block in an embodiment of the present invention.

[0029] Figure 7 for Figure 2 Enlarged view of point A (locking mechanism).

[0030] Figure 8 for Figure 7 The second embodiment diagram (Example 2).

[0031] Figure 9 This is an overall structural diagram of Embodiment 3 of the present invention. Figure 10 This is a diagram showing the positional relationship between the slide rail and the adapter plate in Embodiment 3 of the present invention.

[0032] In the diagram: 1. Slide rail, 1-1. Upper arc surface, 1-2. Lower arc surface, 1-3. Inner top protrusion, 1-4. Top protrusion, 1-5. Positioning groove, 1-6. Locking groove, 1-7. Stop edge, 2. Slide plate, 3. Drive assembly, 3-1. Input rotation shaft, 3-2. Drive nut, 3-3. Middle rotation shaft, 4. Drive fixing sleeve, 4-1. Slot (for installing drive motor), 5. Pressure locking plate, 6. Double-opening reverse pull zipper, 6-1. Slider head, 7. Dust cover, 8. Roller, 9. Adapter plate, 9-1. Bottom recess, 10. Fixing screw, 11. Top block, 11-1. Oil groove, 12. Roller shaft, 13. Lead screw, 14. L-shaped fixing plate (for fixing the slider head), 15. Inverted L-shaped plate, 16. Lock head, 17. Lead screw fixing seat, 18. Support block. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0034] Example

[0035] Please see Figures 1 to 7 , this embodiment provides a long slide rail mechanism for an automotive seat. The mechanism mainly includes a slide rail 1, a slide plate 2, a drive assembly, a top block 11, rollers 8, and a dust-proof assembly.

[0036] Slide rail structure: The slide rail 1 is the basic support and guiding component of the mechanism. Its main body is a long strip-shaped profile that extends along the length direction. As Figure 5 shown, the cross-section of the slide rail 1 has a unique semi-surrounding structure, with an opening running through its length at the top. The inner cavity of the slide rail 1 forms a sliding channel, and its inner contour is specially designed to be a symmetrical shape. Each symmetrical side is smoothly connected by an upper arc surface 1-1, an inner top convex 1-3, a lower arc surface 1-2, and a top convex 1-4. This contour not only provides good guiding performance but also lays the foundation for the interaction of internal components and has good supporting performance. In this embodiment, an extension section is provided on the side of the slide rail 1 (i.e., one outer wall along its width direction). Threaded holes or through holes are pre-machined on this extension section for subsequent connection of the adapter plate 9.

[0037] Slide plate and movement components: The slide plate 2 is the core component that directly bears the seat and performs the sliding function. As Figure 3 shown, the cross-section of the slide plate 2 is designed as a "convex" shape, and the flange parts on both sides of it exactly match the inner contour of the slide rail 1 and are constrained within the sliding channel of the slide rail 1, ensuring that the slide plate 2 can only move smoothly along the length direction of the slide rail 1. The middle convex part of the slide plate 2 extends out from the opening at the top of the slide rail 1 for fixed connection with the skeleton of the automotive seat.

[0038] To achieve smooth and low-resistance sliding, rollers 8 are installed at the bottom of the slide plate 2. To prevent the rollers from running off track and simplify the structure, the rollers 8 are rotatably fixed on the slide plate 2 through roller shafts 12. The designed lower arc surface 1-2 and inner top convex 1-3 of the slide rail 1 prevent the rollers from excessive deviation. This rolling friction replaces the traditional sliding friction, greatly reducing the movement resistance.

[0039] [[ID=1#7]]Clearance elimination and lubrication structure: To solve the problems of shaking and abnormal noise caused by clearance in traditional slide rail mechanisms, this embodiment sets up a top block 11. As Figure 6 shown, a top groove is opened on the upper surface of the slide plate 2, and the top block 11 is firmly installed in this top groove. To prevent the top block 11 from shifting and shaking, the top shape of the top block 11 matches the upper arc surface 1-1 of the slide rail 1, and the two always keep in contact and abut against each other. An adjustment gasket (not shown separately in the figure) is provided between the installation surface of the top groove of the slide plate 2 and the top block 11. By selecting gaskets of different thicknesses, the height of the top block 11 relative to the slide plate 2 can be precisely adjusted, thereby eliminating the assembly clearance in the up and down directions of the slide plate 2 within the slide rail 1 and achieving a "zero-shaking" tight fit effect.

[0040] To extend service life and maintain smooth sliding, the top surface of the top block 11 (i.e., the working surface in contact with the upper arc surface 1-1) is machined with multiple parallel oil grooves 11-1. Crucially, the extension direction of these oil grooves 11-1 is perpendicular to the length direction (i.e., the sliding direction) of the slide rail 1. This design effectively stores grease and forms a uniform lubricating oil film during sliding, continuously reducing friction between the top block 11 and the slide rail 1.

[0041] Drive system: This mechanism uses a motor drive. For example... Figure 2 and Figure 4 As shown, a lead screw 13 is fixedly mounted inside the slide rail 1 via lead screw fixing seats 17 at both ends, and remains parallel to the slide rail 1. The drive assembly 3 is an integrated module, which is mounted on the slide plate 2. The drive assembly 3 mainly includes a drive motor (which can be inserted and fixed in the slot 4-1 of the drive fixing sleeve 4), a gear reduction mechanism consisting of an input rotating shaft 3-1 and an intermediate rotating shaft 3-3, and a drive lead screw nut 3-2.

[0042] The drive motor is mounted on one side of the drive assembly. Its output torque is reduced and amplified by a gear set before being transmitted to the drive nut 3-2, causing it to rotate. Since the drive nut 3-2 is threadedly engaged with the stationary lead screw 13, the rotation of the drive nut 3-2 is converted into precise linear motion of the drive assembly 3 and the slide plate 2 fixed thereto along the axis of the lead screw 13, thereby realizing the electric adjustment of the seat position.

[0043] Dustproof System: To prevent dust, sand, and other foreign objects from entering the interior through the opening at the top of the slide rail 1 and damaging the moving parts, this mechanism is designed with a highly efficient dustproof assembly. This system includes two long strips of dust-proof cloth 7 and a double-opening, reverse-pull zipper 6 connecting them. The two dust-proof cloths 7 are laid flat on both sides of the opening at the top of the slide rail 1.

[0044] The outermost long edge of the dust cover 7 is sewn with multiple padlocks 16. For example... Figure 7 As shown in the enlarged view at point A, the locking mechanism is specifically designed as follows: on the top surface of the slide rail 1, a positioning groove 1-5 and a locking groove 1-6 are provided parallel to the slide rail. During installation, the lock head 16 on the dust cover 7 is placed into the positioning groove 1-5.

[0045] Locking mechanism and its working principle: The main body of the locking mechanism in this embodiment is an inverted L-shaped plate 15. Its vertical edge is inserted into the adjacent locking grooves 1-6, and its horizontal edge spans across the top of the positioning grooves 1-5. The design of this locking mechanism fully considers the actual stress state of the dust cover 7 and the convenience of disassembly operation. Its core principle can be summarized as the principle of force direction constraint.

[0046] Specifically, during normal use of the slide rail mechanism, the dust cover 7 mainly bears forces from two directions: one is the longitudinal tension along the length of the slide rail caused by the opening and closing of the zipper 6; the other is the vertical force generated by the tension of the fabric itself and slight vibrations. However, the fixed side of the dust cover 7 is embedded in the positioning groove 1-5 by the locking head 16, and the positioning groove 1-5 is a long strip-shaped groove extending along the slide rail direction, whose wall completely constrains the locking head 16 in the horizontal direction. This means that no matter how much longitudinal or lateral (perpendicular to the slide rail direction) tension the dust cover 7 bears, the locking head 16 is blocked by the side wall of the positioning groove 1-5 and cannot produce horizontal displacement. The only possible direction of movement for the locking head 16 is to disengage vertically upward from the positioning groove 1-5.

[0047] The inverted L-shaped plate 15 is designed specifically for this single disengagement path. When the inverted L-shaped plate 15 is in a natural falling state, its lateral edge covers the opening of the positioning groove 1-5, physically blocking the upward movement trajectory of the lock head 16. At this time, even if the dust cover 7 is subjected to an unexpected upward pulling force, the lock head 16 will be reliably blocked back by the lateral edge of the inverted L-shaped plate 15.

[0048] Conversely, for the inverted L-shaped plate 15 to disengage from the locking grooves 1-6, its only direction of movement is vertical upward lifting. However, in the normal installation state, the lateral edge of the inverted L-shaped plate 15 is located below the dust cover 7, which lies flat covering the top surface of the slide rail 1 and the top of the inverted L-shaped plate 15. In other words, the dust cover 7 itself constitutes a physical barrier to the upward movement of the inverted L-shaped plate 15. As long as the dust cover 7 is in the flat installation state, the inverted L-shaped plate 15 cannot be lifted upward.

[0049] The constraints in the two directions mentioned above together constitute a two-way interlocking mechanism: 1. If the lock head 16 wants to come out, it must move upward, but it is blocked by the lateral edge of the inverted L-shaped plate 15; 2. If the inverted L-shaped plate 15 wants to come out, it must also move upward, but it is blocked by the dust cover 7 laid on top.

[0050] The two components are mutually restrictive and locked together. As long as the dust cover 7 remains flat, the entire locking system is in a stable self-locking state, and will not loosen even if the vehicle experiences severe vibrations during operation.

[0051] Ease of disassembly: Another major advantage of this locking mechanism is its extremely simple disassembly operation. When it is necessary to clean or replace the dust cover 7, the operator first fully opens the double-opening reverse zipper 6, separating the two dust cover sheets 7. At this time, the movable side of the dust cover 7 is detached from the zipper 6, and the fabric is no longer taut, thus gaining upward lifting freedom. The operator only needs to lift the fixed side of the dust cover 7 upward. As the dust cover 7 is lifted, the lateral edge of the inverted L-shaped plate 15, which was originally pressed below it, loses its upward obstruction. At this time, the inverted L-shaped plate 15 can be lifted freely upward. The operator can then lift the lock head 16 and the dust cover 7, which will in turn drive the inverted L-shaped plate 15 upward. As its lateral edge completely opens the opening of the positioning groove 1-5, the upward release path of the lock head 16 is fully released, thus completing the disassembly of the dust cover 7.

[0052] The entire disassembly process requires no auxiliary tools and can be completed with just two simple actions: separating the zipper and lifting the dust cover. Installation is performed in the reverse order: first, place the lock head 16 into the positioning slots 1-5, then lower the inverted L-shaped plate 15, and finally lay the dust cover 7 flat and pull the zipper 6. The dust cover 7 will automatically press down on the inverted L-shaped plate 15, completing the self-locking process. This design cleverly incorporates the dust cover 7 itself as a component of the locking system, achieving an ideal user experience of self-locking upon installation and disassembly upon unlocking, significantly improving the convenience of user maintenance.

[0053] To further enhance the reliability of the locking mechanism, the top opening of the positioning groove 1-5 is not completely open, but rather has an inwardly extending retaining edge on its edge away from the inverted L-shaped plate 15. This retaining edge, together with the lateral edge of the inverted L-shaped plate 15, forms a nearly closed, enveloping limiting structure: the retaining edge restricts the lateral lifting of the lock head 16 from one side, while the inverted L-shaped plate 15 restricts the vertical disengagement of the lock head 16 from the other side and above. The lock head 16 is effectively "trapped" within the semi-enclosed space formed by the groove wall of the positioning groove 1-5, the retaining edge, and the lateral edge of the inverted L-shaped plate 15, further improving its vibration resistance and anti-disengagement capability.

[0054] The movable (inner) long side of the dust cover 7 is connected by a double-opening reverse-pull zipper 6. The two zipper pulls 6-1 are fixed to both ends of the slide plate 2 by L-shaped fixing plates 14. When the slide plate 2 moves, it drags the zipper pulls 6-1, thus opening or closing the zipper between the two dust cover sheets 7. This design ensures that the slide rail openings at both ends of the slide plate 2 are effectively covered by the dust cover 7, regardless of where the slide plate 2 moves, achieving dynamic dust prevention.

[0055] Installation structure: The entire slide rail mechanism is mounted to the car floor via adapter plate 9. For example... Figure 2 and Figure 9As shown, the adapter plate 9 is securely connected to the extension section on the side of the slide rail 1 via a bolt assembly. The bottom surface of the slide rail 1 has an upwardly protruding top protrusion 1-4, while the top surface of the adapter plate 9 has a correspondingly downwardly recessed bottom recess 9-1. When the two are assembled, the top protrusion 1-4 and the bottom recess 9-1 fit together, not only serving a positioning function but also forming a cavity, i.e., a storage space, between them. Finally, the fixing screws 10 used to fix the entire seat to the frame can pass through the adapter plate 9 and extend into this storage space to connect with the frame. This design allows the fastening points to be hidden, resulting in a cleaner appearance, while also increasing the stability and strength of the connection.

[0056] Example

[0057] Please refer to Figure 8 In this embodiment, only one positioning groove exists, and no separate locking groove is provided. The lock head 16 and the inverted L-shaped plate 15 are both accommodated in the positioning groove 1-5. The structure of other parts is exactly the same as in Embodiment 1 (see reference). Figure 1 And related descriptions, including the structure of the skateboard, drive components, etc.

[0058] Specifically, the positioning groove 1-5 is an elongated groove with an upward opening, extending along the length of the slide rail 1. The lock head 16 is located on the fixed side of the dust cover 7 and placed within the positioning groove 1-5. The inverted L-shaped plate 15 is an elongated structure, also placed within the positioning groove 1-5, and located inside the lock head 16 (i.e., on the side closer to the center line of the slide rail). The inverted L-shaped plate 15 reduces part of the opening of the positioning groove 1-5, and due to the action of the retaining edge, restricts the upward disengagement path of the lock head 16.

[0059] When the dust cover 7 is in the flat dust-covering state, the dust cover 7 extends outward from the positioning groove 1-5 and covers the top opening of the slide rail 1, while the dust cover 7 presses against the top of the inverted L-shaped plate 15.

[0060] The working principle of the locking mechanism in this embodiment is as follows: The lock cylinder 16 is placed within the positioning groove 1-5, and its upward release path is blocked by the retaining edge; the inverted L-shaped plate 15 is also placed within the positioning groove 1-5, and its upward release path is blocked by the dust-proof cloth 7. This forms a two-way interlock: the release of the lock cylinder 16 is blocked by the retaining edge, and the release of the inverted L-shaped plate 15 is blocked by the dust-proof cloth 7. The two restrict each other, and as long as the dust-proof cloth 7 remains flat, the entire locking system is in a stable self-locking state.

[0061] When it is necessary to remove the dust cover 7, the operator first pulls open the double-opening reverse zipper 6 to release the tension of the dust cover 7, and then lifts the fixed side of the dust cover 7 upwards to release the dust cover 7 from pressing against the inverted L-shaped plate 15. At this time, first use your fingers or tools to pull the inverted L-shaped plate 15 out of the positioning groove 1-5 so that the groove of the positioning groove 1-5 is fully open, and then lift the lock head 16 upwards to remove the fixed side of the dust cover 7 from the positioning groove 1-5. The installation is carried out in the reverse order: first put the lock head 16 into the positioning groove 1-5, then put the inverted L-shaped plate 15 into the positioning groove 1-5 and make it cover the lock head 16, and finally lay the dust cover 7 flat and pull the double-opening reverse zipper 6 to complete the self-locking.

[0062] Example

[0063] Please see Figure 9 and Figure 10 This embodiment provides another long slide rail mechanism for automotive seats. Its core components, working principle, and technical effects are exactly the same as those in Embodiment 1, including the "convex" shaped structure of the slide plate 2, the gap elimination mechanism between the top block 11 and the adjusting shim, the lubrication design with vertical oil grooves, the rolling support of the roller 8, the electric drive system composed of the lead screw 13 and the drive assembly 3, and the high-efficiency dustproof system composed of the double-opening reverse pull zipper 6, the dust cover 7, and the inverted L-shaped plate locking mechanism.

[0064] The only difference between this embodiment and Embodiment 1 is the connection position between the slide rail 1 and the adapter plate 9.

[0065] In Example 3, as Figure 9 and Figure 10 As clearly shown, the end of the slide rail 1 (i.e., one end along its length) is widened or extended to form an end extension. Correspondingly, the adapter plate 9 is connected and fixed to this end extension of the slide rail 1 via a bolt assembly. The top protrusion 1-4 on the bottom surface of the slide rail 1 and the bottom recess 9-1 on the top surface of the adapter plate 9 cooperate to form a concealed screw placement space. A support block 18 is provided at the end of the placement space to strengthen the support of the top protrusion of the slide rail and the bottom recess of the adapter plate.

[0066] The advantage of this design is that by shifting the main mounting connection points from the side to the end of the slide rail, the space on the side of the slide rail can be maximized. This is especially important for some models with compact interior layouts, as it provides valuable lateral arrangement and operating space for motors, wiring harnesses, heating and ventilation ducts, or other mechanisms under the seats, improving the flexibility and modularity of the overall vehicle layout. Users can flexibly choose either Embodiment 1 (side connection) or Embodiment 3 (end connection) slide rail configuration according to the platform requirements and installation environment of different vehicle models.

[0067] In summary, this invention, through innovative structural design, comprehensively solves key technical problems such as clearance control, long-term lubrication, smooth rolling, efficient dust prevention, and flexible installation of the slide rail mechanism, providing a high-performance, highly reliable, and easy-to-maintain automotive seat adjustment solution.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A long slide rail mechanism for a car seat, comprising a slide rail (1) and a slide plate (2), the slide plate (2) being constrained in the slide rail (1) and the two being in sliding fit; characterized in that, It also includes a top block (11); the top block (11) is located on the sliding plate (2); the cross section of the sliding rail (1) is a semi-enclosed structure, and the top block (11) and the sliding plate (2) are located in the area enclosed by the sliding rail (1), wherein the top block (11) abuts against the inner top surface of the sliding rail (1); An adjusting gasket is arranged between the sliding plate (2) and the top block (11).

2. The long slide rail mechanism for an automobile seat according to claim 1, wherein The outer surface of the top block (11) is provided with a plurality of parallel oil grooves (11-1), and the plane of each oil groove (11-1) is perpendicular to the extension direction of the sliding rail (1).

3. The long slide rail mechanism for an automobile seat according to claim 1, wherein The top of the sliding rail (1) has an opening; the sliding plate (2) is in a convex shape structure, and its two sides are constrained in the sliding rail (1) and are matched with the inner contour of the sliding rail (1), and the middle part of the sliding plate (2) is exposed from the opening of the sliding rail (1); The sliding plate (2) is also provided with a roller (8), and the roller (8) rolls on the inner bottom surface of the sliding rail (1).

4. The long slide rail mechanism for an automobile seat according to claim 3, wherein The inner contour of the sliding rail (1) has an upper arc surface (1-1), an inner top convex (1-3) and a lower arc surface (1-2); Wherein the top block (11) abuts against the upper arc surface (1-1), the end of the inner top convex (1-3) is located outside the top of the roller (8), and the lower arc surface (1-2) is located outside the bottom of the roller (8).

5. The long slide rail mechanism for an automobile seat according to claim 1, wherein It also includes an adapter plate (9), which is connected to the bottom of the sliding rail (1); the sliding rail (1) is provided with an extension section, and the adapter plate (9) is connected with the extension section through a bolt assembly.

6. The long slide rail mechanism for an automobile seat according to claim 5, wherein The bottom surface of the sliding rail (1) is provided with a top convex (1-4), and the top surface of the adapter plate (9) is provided with a bottom concave (9-1); the top convex (1-4) and the bottom concave (9-1) oppositely form a reserved space for mounting a fixing screw (10), wherein the fixing screw (10) is used to realize the fixed connection between the adapter plate (9) and the vehicle frame.

7. The long slide rail mechanism for an automobile seat according to claim 1, wherein It also includes a lead screw (13) and a driving assembly (3), wherein the two ends of the lead screw (13) are fixed in the sliding rail (1) and are parallel to the sliding rail (1); the driving assembly (3) is installed on the sliding plate (2), and the driving nut (3-2) in the driving assembly (3) is threadedly connected with the lead screw (13).

8. The long slide rail mechanism for an automobile seat according to claim 3, wherein The opening position of the sliding rail (1) is provided with a dustproof assembly, and the dustproof assembly includes a double-opening reverse pull zipper (6) and two dust cover cloths (7); the two dust cover cloths (7) are connected through the double-opening reverse pull zipper (6), and the two pull heads (6-1) of the double-opening reverse pull zipper (6) are respectively connected to the two ends of the sliding plate (2); The dust cover cloth (7) is connected to the upper surface of the sliding rail (1) through a locking structure.

9. The long slide rail mechanism for an automobile seat according to claim 8, wherein The locking mechanism includes an inverted L-shaped plate (15) and a locking groove (1-6) provided at the top of the sliding rail (1); The fixed side of the dust cover cloth (7) is provided with a lock head (16); the lock head (16) is located in the positioning groove (1-5) at the top of the sliding rail (1), and the inverted L-shaped plate (15) is located at the positioning groove (1-5), and part of it is horizontally above the lock head (16) to prevent the lock head (16) from coming out; The inverted L-shaped plate (15) has the freedom to move up and down in the groove.

10. The long slide rail mechanism for an automobile seat according to claim 9, wherein The positioning slot (1-5) is further provided with a locking slot on one side, wherein the locking slot (1-6) and the positioning slot (1-5) are parallel to each other, and the locking slot (1-6) is located on the inner side of the corresponding positioning slot (1-5); The vertical part of the inverted L-shaped plate (15) is arranged in the locking slot (1-6), and the horizontal part is located above the positioning slot (1-5) and shields part of the slot of the positioning slot (1-5); The dustproof cloth (7) extends from the positioning slot (1-5) towards the double-opening reverse zipper (6) and is located at the top of the inverted L-shaped plate (15); The positioning slot (1-5) is further provided with a blocking edge towards the inverted L-shaped plate (15) on the side away from the inverted L-shaped plate (15) at the top of the positioning slot (1-5); and the opening width left at the top of the positioning slot (1-5) is greater than the width of the lock head (16).

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