Independently drive-controlled slide rail and seat slide rail assembly

Abstract

The utility model discloses an independent drive control's slide rail, including lower slide rail and the upper slide rail of sliding connection in lower slide rail, the lower slide rail is rotationally installed with screw rod, the upper slide rail fixedly connected with nut cover, the nut cover is screwed on the screw rod, lower slide rail one end end portion fixed mounting has installation component, and the installation component is used for fixed mounting drive motor, and drive motor output and screw rod end portion transmission connection. The utility model discloses still a kind of seat slide rail assembly, it includes two symmetrical independent drive type slide rails, two the upper slide rail top for fixedly connected seat framework, and two drive motor synchronous drive. The utility model has the beneficial effects that: significantly reduce operating noise, improve the ride comfort.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat component technology, specifically to an independently driven and controlled slide rail and a seat slide rail assembly. Background Technology

[0002] In the structural design of car seats, the seat rail plays a crucial role. As a key component for seat adjustment, it directly affects the seat's functionality and the comfort of passengers. Currently, car seat rails are widely used in various automotive products. The common traditional structure involves a single motor between two rails, which drives a synchronizing mechanism to move the two rails synchronously, enabling functions such as fore-and-aft seat adjustment. This traditional design satisfies basic seat adjustment needs to a certain extent, and due to its relatively simple structure, it has been widely used in past car seat designs.

[0003] However, with the continuous development of automotive technology and the increasing demands of users for a better driving experience, the traditional single-motor-driven two-rail structure has gradually shown its shortcomings. Because a single motor needs to drive two rails and connected components such as the seat simultaneously, it bears a tremendous load. Under high load conditions, the motor is prone to generating significant noise due to increased friction and vibration between components, directly affecting the comfort of passengers. Utility Model Content

[0004] In view of this, the present invention provides an independently driven and controlled slide rail and a seat slide rail assembly, which has low noise under motor load.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A slide rail with independent drive control includes a lower slide rail and an upper slide rail slidably connected within the lower slide rail. A screw is rotatably mounted within the lower slide rail, and a nut sleeve is fixedly connected to the upper slide rail. The nut sleeve is threaded onto the screw. An installation assembly is fixedly mounted at one end of the lower slide rail. The installation assembly is used to fix a drive motor, and the output end of the drive motor is drively connected to the end of the screw.

[0007] By adopting the above structure and employing an independent drive design, each slide rail is equipped with a separate drive motor directly connected to the screw drive, avoiding the high load problem of traditional single-motor drive of dual slide rails. The reduced load on individual motors leads to decreased friction and vibration during operation, effectively reducing noise and improving sound quality.

[0008] Preferably, the mounting assembly includes a support base and a mounting bracket. The support base includes a base, with raised portions extending upwards from both sides of one end. The raised portions have lugs extending outwards along their length, and these lugs are fixedly connected to both sides of the lower slide rail end. This structure provides stable support for the drive motor and increases the overall structural rigidity of the mounting assembly.

[0009] Preferably, the mounting bracket includes a base and two upright plates on both sides of one end of the base. The base is supported on a base support, and the end of the base away from the upright plates is fixedly connected to a support seat by bolts. One upright plate has a protrusion extending outward along the width direction of the mounting bracket, and the protrusion is fixed to the inner side of the raised portion of the base support by bolts. A pad is provided between the upright plate on the other side and the corresponding raised portion, and bolts are passed through the raised portion and the pad in sequence before being locked and fixed to the upright plate. This structure compensates for tolerances and facilitates assembly.

[0010] Preferably, the mounting bracket further includes an end plate connecting the two side uprights. The end plate has an opening in the middle and a groove on its inner side adapted to the drive motor. The end of the base away from the end plate has an upwardly extending locking platform. The top of the base has an arc-shaped structure. The drive motor is supported on the top of the base, with its front and rear ends respectively locked into the groove and the locking platform. This structure provides stable support, making the motor installation and positioning more precise and secure, avoiding shaking and displacement during motor operation, and reducing noise caused by vibration.

[0011] Preferably, the top of the lower slide rail is bent inward at both ends in the width direction to form two mounting parts. These two mounting parts form mounting cavities with the left and right sides of the lower slide rail, respectively. Two mounting parts extend outward along the length of the mounting bracket from the outer side of the end plate, and each mounting part extends into one of the two mounting cavities. The outer side of each mounting part is provided with a raised rib, which abuts against the inner wall of the mounting cavity. This structure eliminates horizontal installation gaps, resulting in a tighter connection between the mounting bracket and the lower slide rail, more precise positioning, enhanced overall connection rigidity, reduced relative sway, and effectively reduced structural vibration noise during slide rail operation.

[0012] Preferably, the tops of the two mounting portions abut against the inner wall of the assembly cavity; a first clamping portion extends outward along the length of the mounting bracket from the outer side of the end plate, and a second clamping portion extends outward from the end of the bottom support near the raised portion, forming a clamping gap between the first and second clamping portions for clamping and fixing the bottom of the lower slide rail. This structure eliminates the mounting gap in the height direction, and the clamping gap clamps and fixes the bottom of the lower slide rail, further strengthening the connection strength and integrity between the mounting assembly and the lower slide rail, reducing vibration and displacement during operation, and thus reducing noise.

[0013] Preferably, the output end of the drive motor is connected to a transmission shaft, which is connected to a lead screw via a spring coupling. This structure compensates for installation errors and axial displacement during operation, ensuring coaxiality between the transmission shaft and the lead screw.

[0014] Preferably, the upper slide rail has symmetrical connecting parts on both sides, with each connecting part corresponding to one of the two assembly cavities. A slider is provided between the connecting part and the assembly cavity, and the slider is fixedly connected to the connecting part. The outer side and bottom of the slider are provided with sliding ridges that slide against the assembly cavity. This structure ensures a stable connection between the slider and the upper slide rail, and the sliding ridges reduce the contact area between the slider and the assembly cavity, thus reducing sliding friction resistance and noise.

[0015] Preferably, the slider has mounting notches at both ends of its top, and spring sheets are installed in each mounting notch;

[0016] The mounting notch has inwardly extending elastic support seats on both sides. Slots are located above the elastic support seats. Both ends of the spring plate are supported on the elastic support seats and inserted into the slots on either side. The middle of the spring plate has an upwardly convex arch shape, with the top of the arch supporting the top of the assembly cavity. Using this structure, the arched support of the spring plate compensates for the gaps in the slide rails, suppressing vibration and noise during sliding. The elastic support seats and slots define the position of the spring plate, preventing displacement and failure, continuously ensuring a tight fit between the slide rails, and optimizing the quietness and structural stability during seat adjustment.

[0017] This utility model also provides a seat slide rail assembly, the purpose of which is to solve the problem of high operating noise of current car seat slide rails and improve the comfort of riding.

[0018] To achieve the above objectives, the technical solution of this utility model is as follows:

[0019] A seat slide rail assembly includes two sets of independently driven slide rails arranged in parallel. The tops of the two upper slide rails are used to fix and connect to the seat frame. Two drive motors can synchronously drive the corresponding upper slide rails to slide. This structure, with synchronous drive from two motors, significantly reduces operating noise and improves passenger comfort.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Through an independent drive design, each slide rail is equipped with a separate drive motor, directly connected to the screw drive. This significantly reduces the load on individual motors, increases their service life, and reduces friction and vibration during operation, thereby reducing noise at its source and effectively solving the core problem of high noise in traditional structures. Simultaneously, the motor is fixed to the end of the slide rail via mounting components, allowing the entire slide rail and its drive motor to be recessed and mounted below the vehicle floor surface, contributing to a clean and aesthetically pleasing interior.

[0022] 2. The mounting part of the end plate extends into the lower rail assembly cavity and the protruding rib abuts against the cavity wall. At the same time, the top of the mounting part abuts against the inner wall of the assembly cavity, and the first clamping part and the second clamping part clamp the bottom of the lower rail, respectively eliminating the installation gap in the horizontal and vertical directions, realizing precise positioning and firm fixation of the motor, and further reducing vibration and noise.

[0023] 3. A spring coupling is installed between the drive shaft at the output end of the drive motor and the screw. Its elastic structure can effectively buffer the vibration and impact during motor operation and reduce vibration noise; at the same time, it can compensate for the installation coaxiality error between the motor and the screw and the axial displacement during operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a single slide rail.

[0025] Figure 2 This is a structural diagram of the front side of the mounting bracket 62;

[0026] Figure 3 A schematic diagram of the structure on the back side of mounting bracket 62;

[0027] Figure 4 A schematic diagram illustrating the assembly relationship between the support base 61 and the mounting bracket 62;

[0028] Figure 5 A schematic diagram illustrating the clamping gap a;

[0029] Figure 6 A sectional view showing the mating relationship between the mounting bracket 62 and the assembly cavity 1a;

[0030] Figure 7 To show the cross-sectional view of slider 9;

[0031] Figure 8 A cross-sectional view showing the mounting method of the spring plate 10;

[0032] Figure 9 A sectional view showing the installation method of screw 3 and nut sleeve 4;

[0033] Figure 10 This is a schematic diagram of the slide rail assembly. Detailed Implementation

[0034] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0035] like Figure 1 As shown, an independently driven and controlled slide rail includes a lower slide rail 1 and an upper slide rail 2 slidably connected within the lower slide rail 1. The lower slide rail 1 is used to fixally connect to the vehicle chassis. The top of the upper slide rail 2 is provided with a frame plate 21 extending along its length. Connecting nuts 22 are provided at both ends of the top of the frame plate 21. The upper slide rail 2 can be fixedly connected to the car seat via the connecting nuts 22. A screw rod 3 is rotatably installed inside the lower slide rail 1. A nut sleeve 4 is fixedly connected to the upper slide rail 2, and the nut sleeve 4 is threaded onto the screw rod 3. An installation assembly 6 is fixedly installed at one end of the lower slide rail 1. A drive motor 5 is fixedly installed inside the installation assembly 6, and the output end of the drive motor 5 is connected to the end of the screw rod 3 for transmission. In this embodiment, by adopting an independently driven design, each slide rail is equipped with a separate drive motor 5 directly connected to the screw rod 3 for transmission, avoiding the high load problem of traditional single-motor driven dual slide rails. The load on a single motor is reduced, friction and vibration during operation are reduced, effectively reducing noise and improving sound quality. Meanwhile, the drive motor 5 is fixed to the end of the lower slide rail 1 by the mounting component 6, which can realize the entire slide rail and its drive motor 5 being recessed and mounted under the vehicle floor surface, which helps to ensure the cleanliness and aesthetics of the vehicle interior.

[0036] like Figure 9 As shown, specifically, support brackets 12 are fixedly installed at both ends inside the lower slide rail 1. Each support bracket 12 has a mounting hole 12a, and a self-lubricating bushing 13 is press-fitted into the mounting hole 12a. The two ends of the screw 3 are rotatably supported on the support bracket 12 through the self-lubricating bushing 13. The self-lubricating bushing 13 can reduce the rotational resistance and wear of the screw 3, improve the transmission efficiency of the screw 3, and reduce the noise generated by friction. A bearing seat 14 is fixedly installed inside the upper slide rail 2. The bearing seat 14 has downwardly extending side support sections 14a at both ends. The side support sections 14a are provided with screw through holes 14b. The nut sleeve 4 is secured between the two sets of side support sections 14a by a rubber pad 15. The screw 3 passes through the two screw through holes 14b and the nut sleeve 4.

[0037] like Figure 4 and Figure 5 As shown, the mounting assembly 6 includes a support base 61 and a mounting bracket 62. The support base 61 includes a base 611. One end of the base 611 has two sides extending upward to form a raised portion 612. The raised portion 612 has ears 613 extending outward along the length direction. The two ears 613 are fixedly connected to the two sides of the end of the lower slide rail 1.

[0038] like Figure 2 and Figure 4As shown, the mounting bracket 62 includes a base 621 and upright plates 622 formed on both sides of one end of the base 621. The base 621 is supported on the base support 611. The end of the base 621 away from the upright plate 622 is fixedly connected to the support base 61 by bolts. One upright plate 622 has a protrusion 622a extending outward along the width direction of the mounting bracket 622. The protrusion 622a is fixed to the inner side of the raised part 612 of the base support 611 by bolts. A pad 622b is provided between the other upright plate 622 and the corresponding raised part 612. The pad 622b is locked and fixed to the upright plate 622 by bolts passing through the raised part 612 and the pad 622b in sequence. This design is because in mass production, the dimensions of various stamped parts and castings may have slight deviations. If both sides are connected by rigid protrusions 622a, these small errors may accumulate and forcibly tighten or press against the mounting bracket 62 and the support base 61, generating assembly stress. The design of spacer 622b allows for adjustments to the dimensions of spacer 622b to accommodate these tolerances during final tightening of the bolts, ensuring proper installation.

[0039] like Figure 3 and Figure 4 As shown, the mounting bracket 62 also includes an end plate 623 connected between the two upright plates 622. The end plate 623 has an opening in the middle and a groove 623a adapted to the drive motor 5 on its inner side. The base 621 has an upwardly extending locking platform 624 at one end away from the end plate 623. The top of the base 621 has an arc-shaped structure. The drive motor 5 is supported on the top of the base 621, and its front and rear ends are respectively locked in the groove 623a and the locking platform 624. The installation and positioning of the drive motor 5 are accurate and the fixation is firm, which avoids shaking and displacement of the motor during operation and reduces noise caused by vibration.

[0040] like Figure 2 and Figure 6 As shown, the top of the lower slide rail 1 is bent inward at both ends in the width direction to form two assembly parts 11, making the middle of the top of the lower slide rail 1 open. The two assembly parts 11 form assembly cavities 1a between the left and right sides of the lower slide rail 1, respectively. The two assembly cavities 1a are symmetrically arranged and extend along the length direction of the lower slide rail 1. The assembly cavities 1a are open at the lower end inside the lower slide rail 1. There are two mounting parts 623b extending outward along the length direction of the mounting bracket 62 on the outer side of the end plate 623. The two mounting parts 623b extend into the two assembly cavities 1a respectively. The outer side of the mounting parts 623b is provided with a protruding rib 623c, which abuts against the inner wall of the assembly cavity 1a.

[0041] like Figure 5 and Figure 6As shown, the tops of the two mounting portions 623b abut against the inner wall of the assembly cavity 1a; two first clamping portions 623d extend outward along the length of the mounting bracket 62 on the outer side of the end plate 623. The first clamping portions 623d avoid the opening in the middle of the end plate 623 and are symmetrically arranged on both sides of the opening. A second clamping portion 611a extends outward from the end of the bottom support 611 near the raised portion 612. The second clamping portion 611a is located between the two first clamping portions 623d. A clamping gap a is formed between the bottom of the two first clamping portions 623d and the top of the second clamping portion 611a for clamping and fixing the bottom of the lower slide rail 1. The upper ends of the two first clamping portions 623d extend outward along the width of the mounting bracket 62, and each end is provided with a protruding rib 623c that abuts against the inner wall of the assembly cavity 1a.

[0042] like Figure 6 As shown, in this embodiment, the mounting portion 623b of the end plate 623 extends into the assembly cavity 1a of the lower slide rail 1 and the protruding rib 623c abuts against the cavity wall. At the same time, the top of the mounting portion 623b abuts against the inner wall of the assembly cavity 1a, and the first clamping portion 623d and the second clamping portion 611a clamp the bottom of the lower slide rail 1, thereby eliminating the installation gaps in the horizontal and vertical directions, realizing the precise positioning and firm fixation of the drive motor 5, and further reducing vibration and noise.

[0043] like Figure 1 As shown, the output end of the drive motor 5 is connected to a transmission shaft 7, and the transmission shaft 7 is connected to the screw 3 through a spring coupling 8. The spring coupling 8 includes a left connecting seat 81, a right connecting seat 82, and an elastic body 83 connecting the left connecting seat 81 and the right connecting seat 82. The elastic body 83 can effectively buffer the vibration and impact during motor operation and reduce vibration noise; at the same time, it can compensate for the installation coaxiality error between the drive motor 5 and the screw 3 and the axial displacement during operation.

[0044] like Figure 7 and Figure 8 As shown, the upper slide rail 2 has symmetrical connecting parts 2a on both sides. The two connecting parts 2a are located in the two assembly cavities 1a respectively. A slider 9 is provided between the connecting part 2a and the assembly cavity 1a. The inner side of the slider 9 has a mounting groove 9e that is fastened to the connecting part 2a. The top two ends of the connecting part 2a in the length direction have inwardly inclined guide slopes 2a1, and the inner end of the guide slope 2a1 is connected to a groove 2a2. The inner side of the mounting groove 9e of the slider 9 has a protrusion 9f that cooperates with the groove 2a2. The guide slope 2a1 fits against the groove wall of the mounting groove 9e. The groove 2a2 and the protrusion 9f cooperate to fix the slider 9 to the connecting part 2a.

[0045] like Figure 7 and Figure 8As shown, the slider 9 has sliding edges 9a on its outer side and bottom that slide against the assembly cavity 1a. The top of the slider 9 has mounting notches 9b at both ends, each containing a spring plate 10. Elastic support seats 9c extend inward from the side walls of the mounting notches 9b, and slots 9d are located above the elastic support seats 9c. Both ends of the spring plate 10 are supported on the elastic support seats 9c and inserted into the slots 9d on both sides. The middle of the spring plate 10 has an upward-convex arch shape, with the top of the arch supporting the top of the assembly cavity 1a. This elastic support structure of the spring plate 10 provides elastic preload to the top of the assembly cavity 1a, effectively eliminating the dynamic gap generated during the sliding process between the upper slide rail 2 and the lower slide rail 1, and suppressing vibration and noise during sliding. The elastic support seats 9c and slots 9d limit the position of the spring plate 10, preventing displacement and failure, continuously ensuring a tight fit between the slide rails, and optimizing the quietness and structural stability during seat adjustment.

[0046] like Figure 10 As shown, a seat slide rail assembly includes two sets of independently driven slide rails arranged in parallel. The tops of the two upper slide rails 2 are used to fix and connect to the seat frame. Two drive motors 5 can synchronously drive the corresponding upper slide rails 2 to slide. Specifically, the two drive motors 5 drive the corresponding screws 3 to rotate, which, under the transmission of the nut sleeves 4, drives the two sets of upper slide rails 2 to move synchronously back and forth, thereby realizing the fore-and-aft adjustment of the car seat. This design can significantly reduce operating noise and improve riding comfort.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A slide rail with independent drive control, comprising a lower slide rail (1) and an upper slide rail (2) slidably connected within the lower slide rail (1), characterized in that: A screw (3) is rotatably installed inside the lower slide rail (1), and a nut sleeve (4) is fixedly connected to the upper slide rail (2). The nut sleeve (4) is threaded onto the screw (3). An installation component (6) is fixedly installed at one end of the lower slide rail (1). The installation component (6) is used to fix the drive motor (5). The output end of the drive motor (5) is connected to the end of the screw (3) for transmission.

2. The slide rail with independent drive control according to claim 1, characterized in that: The mounting assembly (6) includes a support base (61) and a mounting bracket (62). The support base (61) includes a base (611). The base (611) has raised portions (612) extending upward on both sides at one end. The raised portions (612) have lugs (613) extending outward along the length direction. The lugs (613) on both sides are fixedly connected to the ends of the sliding rail (1).

3. The slide rail with independent drive control according to claim 2, characterized in that: The mounting bracket (62) includes a base (621) and upright plates (622) on both sides of one end of the base (621). The base (621) is supported on the base (611). The end of the base (621) away from the upright plate (622) is fixedly connected to the support base (61) by bolts. One side of the upright plate (622) has a protrusion (622a) extending outward along the width direction of the mounting bracket (62). The protrusion (622a) is fixed to the inner side of the raised part (612) of the base (611) by bolts. A pad (622b) is provided between the upright plate (622) on the other side and the corresponding heightening part (612). After the bolt passes through the heightening part (612) and the pad (622b) in sequence, it is locked and fixed to the upright plate (622).

4. The slide rail with independent drive control according to claim 3, characterized in that: The mounting bracket (62) also includes an end plate (623) connecting the two side uprights (622). The end plate (623) has an opening in the middle and a groove (623a) adapted to the drive motor (5) is provided on the inner side. The base (621) has an upwardly extending locking platform (624) at one end away from the end plate (623). The top of the base (621) has an arc-shaped structure. The drive motor (5) is supported on the top of the base (621) and the front and rear ends are respectively locked in the groove (623a) and the locking platform (624).

5. A slide rail with independent drive control according to claim 4, characterized in that: The top width direction of the lower slide rail (1) is bent inward at both ends to form two assembly parts (11). The two assembly parts (11) form assembly cavities (1a) between the left and right sides of the lower slide rail (1). The outer side of the end plate (623) extends outward along the length direction of the mounting bracket (62) to have two mounting parts (623b). The two mounting parts (623b) extend into the two assembly cavities (1a) respectively. The outer side of the mounting part (623b) is provided with a rib (623c). The rib (623c) abuts against the inner wall of the assembly cavity (1a).

6. The slide rail with independent drive control according to claim 5, characterized in that: The tops of the two mounting portions (623b) abut against the inner wall of the assembly cavity (1a); the outer side of the end plate (623) extends outward along the length direction of the mounting bracket (62) with a first clamping portion (623d), and the bottom support (611) extends outward near the end of the raised portion (612) with a second clamping portion (611a), and a clamping gap (a) is formed between the first clamping portion (623d) and the second clamping portion (611a) for clamping and fixing the bottom of the lower slide rail (1).

7. A slide rail with independent drive control according to claim 1, characterized in that: The output end of the drive motor (5) is connected to a transmission shaft (7), and the transmission shaft (7) is connected to a screw (3) through a spring coupling (8).

8. A slide rail with independent drive control according to claim 5, characterized in that: The upper slide rail (2) is symmetrically provided with connecting parts (2a) on both sides. The two connecting parts (2a) are located in the two assembly cavities (1a) respectively. A slider (9) is provided between the connecting part (2a) and the assembly cavity (1a). The slider (9) is fixedly connected to the connecting part (2a). The outer side and bottom of the slider (9) are provided with sliding edges (9a) that slide against the assembly cavity (1a).

9. A slide rail with independent drive control according to claim 8, characterized in that: The slider (9) has mounting notches (9b) at both ends of its top, and spring sheets (10) are installed in each mounting notch (9b). The side walls of the mounting notch (9b) extend inward to form elastic support seats (9c). The elastic support seats (9c) are provided with slots (9d) above them. Both ends of the spring sheet (10) are supported on the elastic support seats (9c) and inserted into the slots (9d) on both sides respectively. The middle part of the spring sheet (10) has an upward convex arc shape, and the top of the arc shape is supported on the top of the assembly cavity (1a).

10. A seat slide rail assembly, characterized in that: It includes two sets of independently driven and controlled slide rails as described in any one of claims 1-9, the two sets of independently driven and controlled slide rails are arranged in parallel, the top of the two upper slide rails (2) are used to fix and connect the seat frame, and the two drive motors (5) are able to synchronously drive the corresponding upper slide rails (2) to slide.

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