Electric sliding rail system and automobile

Abstract

The utility model provides an electric sliding rail system and an automobile. The electric sliding rail system comprises a lower sliding rail assembly, an upper sliding rail assembly and a transmission system. The upper sliding rail assembly is connected with the lower sliding rail assembly in a sliding mode. The transmission system comprises a lead screw, a gear box and a motor, the lead screw is fixedly connected to the lower sliding rail assembly, the gear box is fixedly connected to the upper sliding rail assembly and provided with a transmission gear, the motor directly or indirectly drives the transmission gear, the lead screw can be inserted into the gear box, and the motor drives the lead screw to rotate. And the screw rod is in transmission fit with the transmission gear. According to the electric sliding rail system, spiral transmission of the lead screw and the transmission gear is adopted, the lead screw is fixed to the lower sliding rail assembly, the transmission gear is fixed to the upper sliding rail assembly, it is guaranteed that the upper sliding rail assembly can slide along the lower sliding rail assembly, stepless adjustment is achieved, and the electric sliding rail system can stop and walk immediately.

Description

Technical Field

[0001] This application relates to the field of automotive technology, specifically to an electric sliding rail system and an automobile. Background Technology

[0002] With the rapid development of the automotive industry, passengers have higher requirements for interior space, comfort, and convenience. To achieve more scenario modes, there is a need for long-distance sliding of small-sized components such as car armrests. One related technical solution for achieving armrest sliding adopts an integrated lower rail solution to meet this need. In this solution, a motor drives a pulley cable to move the rail, thereby driving the armrest to slide back and forth. However, the drive mechanism occupies a large space, and the adjustment in this way is stepped, which limits the precision. Utility Model Content

[0003] The purpose of this application is to provide an electric slide rail system and an automobile, wherein the transmission system of the electric slide rail system adopts a lead screw gearbox transmission, which can achieve stepless adjustment and high adjustment accuracy.

[0004] To solve the above-mentioned technical problems, this application provides an electric slide rail system, which includes a lower slide rail assembly, an upper slide rail assembly, and a transmission system; the upper slide rail assembly is slidably connected to the lower slide rail assembly.

[0005] The transmission system includes a lead screw, a gearbox, and a motor. The lead screw is fixedly connected to the lower slide rail assembly, and the gearbox is fixedly connected to the upper slide rail assembly. The gearbox has a transmission gear, and the motor directly or indirectly drives the transmission gear. The lead screw can be inserted into the gearbox, and the lead screw and the transmission gear are in a transmission engagement.

[0006] Optionally, the electric slide rail system further includes a power supply harness assembly;

[0007] The lower rail assembly has a first cavity and a second cavity that are independent of each other; the power supply harness assembly is located in the first cavity, and the transmission system is located in the second cavity.

[0008] Optionally, the upper slide rail assembly includes an upper upper slide rail portion and an upper lower slide rail portion, wherein the upper upper slide rail portion is located above the lower slide rail assembly;

[0009] The lower part of the upper slide rail includes a first insertion part and a second insertion part. The first insertion part can be inserted into the first cavity, and the second insertion part can be inserted into the second cavity. The first insertion part and the second insertion part are supported on the lower slide rail assembly by a first roller assembly and a second roller assembly.

[0010] Optionally, the second plug-in portion includes a top plug-in plate and at least two opposing side plug-in plates, with a slot formed between the top plug-in plate and the side plug-in plates; the second plug-in portion is provided with a gearbox fixing seat, which is located in the slot.

[0011] Optionally, the gearbox mounting base has a mounting cavity, and the gearbox is fixed in the mounting cavity.

[0012] Optionally, the gearbox is provided with a cooperating helical gear and a worm gear, the helical gear and the worm gear are connected in one or more stages of transmission, the lead screw is inserted into the helical gear, the helical gear is the transmission gear, and the motor drives the worm gear to indirectly drive the transmission gear.

[0013] Optionally, the upper slide rail assembly further includes a Y-direction gap elimination component and a Z-direction gap elimination component; the first insertion part and the second insertion part are each provided with the Y-direction gap elimination component and the Z-direction gap elimination component between them and the lower slide rail assembly;

[0014] The Y-axis backlash elimination assembly includes a backlash elimination bearing, a backlash elimination bearing shaft, and a backlash elimination bracket. The backlash elimination bearing is inserted into the backlash elimination bearing shaft, and the backlash elimination bearing shaft is fixedly connected to the backlash elimination bracket. The upper surface of the backlash elimination bracket is in contact with the lower surface of the top insertion plate. The side of the backlash elimination bearing is in contact with the inner surface of the side of the lower slide rail assembly.

[0015] The Z-axis gap elimination component is snapped into the top plug plate, and the upper surface of the Z-axis gap elimination component is in contact with the inner surface of the top of the lower slide rail assembly.

[0016] Optionally, the power supply harness assembly includes a harness and a cable chain, the cable chain having a cable chain cavity and a guide groove, the harness being inserted into the guide groove;

[0017] A boss is provided in the first cavity, and the boss passes through the cable chain cavity; one end of the power supply harness assembly is connected to the boss, and the other end is connected to the upper slide rail assembly.

[0018] Optionally, the lower slide rail assembly includes a lower slide rail body, the lower slide rail body having a first cavity and a second cavity, the top of the lower slide rail body having a first opening corresponding to the first cavity and a second opening corresponding to the second cavity, the first insertion part passing through the first opening, and the second insertion part passing through the second opening;

[0019] The lower rail assembly also includes a first trim strip and a second trim strip, the first trim strip covering the first opening and the second trim strip covering the second opening.

[0020] This application also provides an automobile, the automobile including an armrest box and an electric sliding rail system, the electric sliding rail system being any of the electric sliding rail systems described above; the lower sliding rail assembly is mounted on the floor of the automobile, and the armrest box is connected to the upper sliding rail assembly.

[0021] In this application, the electric slide rail system includes an upper slide rail assembly, a lower slide rail assembly, and a transmission system. The upper and lower slide rail assemblies are slidably connected. Unlike conventional motor-driven systems, the transmission system uses a helical drive to ensure adjustment precision. The transmission system includes a gearbox, a lead screw, and a motor. The lead screw is inserted into the gearbox and helically engages with the transmission gears within the gearbox. The motor directly or indirectly drives the transmission gears in the gearbox, converting the rotation of the transmission gears into linear motion of the gearbox on the lead screw. The gearbox is fixed to the upper slide rail assembly, and the lead screw is fixed to the lower slide rail assembly, thus achieving stepless sliding of the upper slide rail assembly relative to the lower slide rail assembly, allowing for immediate stopping and starting.

[0022] The automobile provided in this application includes the aforementioned electric sliding rail system and has the same technical effects as the electric sliding rail system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an electric slide rail system in one embodiment of this application;

[0024] Figure 2 for Figure 1 Exploded view of the electric sliding rail system;

[0025] Figure 3 for Figure 1 The front view, or cross-sectional view, of the middle sliding rail assembly;

[0026] Figure 4 for Figure 1 The front view, also known as the sectional view, of the upper and middle slide rail assembly;

[0027] Figure 5 for Figure 1 Exploded view of the upper and middle slide rail assembly;

[0028] Figure 6 for Figure 1 Exploded view of the intermediate gearbox assembly;

[0029] Figure 7 for Figure 1 Assembly front view of the electric slide rail system;

[0030] Figure 8 for Figure 1 Exploded view of the transmission system;

[0031] Figure 9 for Figure 1 A sectional view of the transmission system;

[0032] Figure 10 for Figure 1 Exploded view of the power supply harness assembly.

[0033] The annotations in the attached figures are explained as follows:

[0034] 1- Lower slide rail assembly; 1a- First cavity; 1b- Second cavity; 11- Lower slide rail body; 11a- First opening; 11b- Second opening; 12- Boss; 13- Trim strip; 131- First trim strip; 132- Second trim strip; 14- Dividing wall;

[0035] 2-Upper slide rail assembly; 21-Upper part of upper slide rail; 22-Lower part of upper slide rail; 221-First insertion part; 222-Second insertion part; 2221-Top insertion plate; 2222-Side insertion plate; 222a-Gutter; 2223-Gearbox mounting base; 2223a-Mounting cavity; 23-Roller assembly; 231-First roller assembly; 232-Second roller assembly; 24-Y-direction clearance elimination assembly; 241-Clearance elimination bearing; 242-Clearance elimination bearing shaft; 243-Clearance elimination bracket; 25-Z-direction clearance elimination assembly; 26-First strip; 27-Second strip;

[0036] 3-Transmission system; 31-Gearbox; 31a-Sinking groove; 311-Transmission gear; 312-Worm gear; 313-Gearbox top cover; 314-Gearbox bottom cover; 315-Retaining ring; 316-Bearing; 317-Protective sleeve; 32-Lead screw; 321-Lead screw support; 33-Motor; 34-Tensioner pin;

[0037] 4-Power supply harness assembly; 41-Wire harness; 42-Drag chain; 42a-Guide groove; 421-Hook. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the embodiments of this application, the terms "first" and "second" are mainly used to distinguish the same or similar features, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0040] In this embodiment, the Y and Z directions are as follows: Figure 7 As shown, the Y direction is the left-right direction of the electric sliding rail system, and the Z direction is the up-down direction of the electric sliding rail system. The Y direction is usually also the left-right direction of the car, and the Z direction is the up-down direction of the car.

[0041] Please refer to Figures 1 to 2 , Figure 1This is a schematic diagram of the structure of an electric slide rail system in one embodiment of this application; Figure 2 for Figure 1 Exploded view of the electric sliding rail system.

[0042] like Figure 1 , 2 As shown, the electric slide rail system used in this embodiment includes a lower slide rail assembly 1, an upper slide rail assembly 2, and a transmission system 3. The upper slide rail assembly 2 and the lower slide rail assembly 1 are slidably connected, specifically, they move along the X direction, which is perpendicular to the Y and Z directions. When applied to an automobile, the upper slide rail assembly 2 and the lower slide rail assembly 1 can slide relative to the front-rear direction of the vehicle. The transmission system 3 includes a lead screw 32, a gearbox 31, and a motor 33. The lead screw 32 is fixedly connected to the lower slide rail assembly 1, and the gearbox 31 is fixedly connected to the upper slide rail assembly 2. The gearbox 31 contains a transmission gear 311. The motor 33 directly or indirectly drives the transmission gear 311. The lead screw 32 can be inserted into the gearbox 31, and the lead screw 32 and the transmission gear 311 are in a transmission engagement.

[0043] Specifically, the motor 33 provides power for the transmission of various components in the gearbox 31. The gearbox 31 contains at least one transmission gear 311, and may also contain other gears that mesh with it. The lead screw 32 can be inserted into the gearbox 31, meaning it can mesh with the transmission gear 311 to achieve helical transmission. When the motor 33 is turned on, it directly or indirectly drives the transmission gear 311 to rotate. Since the lead screw 32 is threaded into the transmission gear 311, and the rotational motion of the transmission gear 311 is converted into linear motion of the gearbox 31 along the lead screw 32, the gearbox 31 is fixed. The gearbox 31 is fixed to the upper slide rail assembly 2, and the lead screw 32 is fixed to the lower slide rail assembly 1, allowing for relative sliding of the upper slide rail assembly 2 along the lower slide rail assembly 1.

[0044] In this embodiment, a helical transmission method is used to slide the upper slide rail assembly 2. Specifically, the screw 32 and the transmission gear 311 achieve stepless adjustment through helical transmission. Compared with the adjustment method of motor-driven cable in the prior art, the adjustment method in this embodiment has higher adjustment accuracy. Moreover, the upper slide rail assembly 2 has sufficient installation space for the motor 33, facilitating its placement. Simultaneously, the movement of the upper slide rail assembly 2 is achieved by the motor 33 driving the transmission gear 311 and the screw 32 within the gearbox 31, resulting in higher transmission efficiency. The motor 33 can be arranged vertically or horizontally.

[0045] Please continue to refer to this. Figure 3 , Figure 3 for Figure 1 The front view of the middle sliding rail assembly 1, i.e., a schematic diagram from the X-direction perspective.

[0046] Depend on Figure 2 As can be seen, the electric slide rail system in this embodiment also includes a power supply harness assembly 4. Figure 3 It can be seen that the lower slide rail assembly 1 has a first cavity 1a and a second cavity 1b that are independent of each other. The power supply harness assembly 4 is located in the first cavity 1a, and the transmission system 3 is located in the second cavity 1b. That is, the lower slide rail assembly 1 used in this embodiment is an integral two-cavity structure, which may include a housing and a partition wall 14 that divides the inner cavity of the housing into the first cavity 1a and the second cavity 1b. The housing and the partition wall 14 can be a whole, or they can be achieved by welding or integral molding. The lower slide rail assembly 1 with an integral two-cavity structure can not only minimize the space occupied by the lower slide rail assembly 1 and improve the space utilization rate, but also separate the power supply harness assembly 4 and the transmission system 3. Specifically, the power supply harness assembly 4 is arranged in the first cavity 1a, and the transmission system 3 is arranged in the second cavity 1b, thereby ensuring that the transmission system 3 will not interfere with the power supply harness assembly 4, and the power supply harness assembly 4 does not need to be set outside the slide rail, making operation more convenient.

[0047] Please refer to Figures 4 to 5 , Figure 4 for Figure 1 A front view of the upper and middle slide rail assembly 2, i.e., a schematic diagram from the X-direction perspective; Figure 5 for Figure 1 Exploded view of the upper and middle slide rail assembly 2.

[0048] The upper slide rail assembly 2 includes an upper slide rail portion 21 and an upper slide rail portion 22, with the upper slide rail portion 21 located above the lower slide rail assembly 1. The lower slide rail portion 22 includes a first insertion portion 221 and a second insertion portion 222. The first insertion portion 221 can be inserted into a first cavity 1a, and the second insertion portion 222 can be inserted into a second cavity 1b. The first insertion portion 221 and the second insertion portion 222 are supported on the lower slide rail assembly 1 by a first roller assembly 231 and a second roller assembly 232. The first roller assembly 231 and the second roller assembly 232 allow the first insertion portion 221 and the second insertion portion 222 to move more smoothly relative to the lower slide rail assembly 1. In detail, the upper slide rail assembly 21 is divided into an upper slide rail portion 21 and an upper slide rail portion 22. The upper slide rail portion 21 can be configured as follows: Figure 4 The U-shaped groove structure allows small components such as the armrest box to be easily fixed to the upper part 21 of the upper slide rail. The lower part 22 of the upper slide rail is inserted into the lower slide rail assembly 1 to achieve a sliding connection between the upper slide rail assembly 2 and the lower slide rail assembly 1, ensuring that the upper slide rail assembly 2 can reciprocate along the lower slide rail assembly 1. Moreover, the lower slide rail assembly 1 includes plug-in parts that are inserted into two different cavities, making the support and sliding more stable and reliable.

[0049] Furthermore, the first roller assembly 231 and the second roller assembly 232 have the same structure and can be collectively referred to as roller assembly 23. Each roller assembly 23 includes a roller bearing, a roller bearing shaft, and a retaining ring. The first roller assembly 231 and the second roller assembly 232 can be connected to the first insertion part 221 and the second insertion part 222 respectively and are secured by retaining rings. The lowest point of the roller bearing roller surface is in contact with the inner surface of the lower side of the lower slide rail assembly 1, that is, in contact with the bottom wall corresponding to the first cavity 1a and the second cavity 1b. In other words, the roller assembly 23 is supported by the lower slide rail assembly 1. The roller assembly 23 reduces friction and ensures smoother sliding of the upper slide rail assembly 2 relative to the lower slide rail assembly 1.

[0050] In this embodiment, the second insertion portion 222 (shown in) Figure 4 , 5 The system includes a top connector plate 2221 and at least two opposing side connector plates 2222. A slot 222a is formed between the top connector plate 2221 and the side connector plates 2222. The second connector portion 222 is inverted U-shaped. Similarly, the first connector portion 221 can also be configured in this way or other similar structures that meet the requirements. The slot 222a in the second connector portion 222 facilitates the arrangement of the transmission system 3 in the second cavity 1b, maximizing the use of the space in the second cavity 1b. Correspondingly, the slot 222a in the first connector portion 221 facilitates the arrangement of the power supply harness assembly 4. As mentioned earlier, the gearbox 31 is fixed to the upper slide rail assembly 2, specifically by providing a gearbox mounting base 2223 in the second connector portion 222. To save space, the gearbox mounting base 2223 is located in the slot 222a.

[0051] Please refer to Figure 5 and combined Figure 6 understand, Figure 6 for Figure 1 Exploded view of the assembly of the intermediate gearbox 31.

[0052] from Figure 5 As can be seen, the gearbox mounting base 2223 has a mounting cavity 2223a, in which the gearbox 31 is fixedly installed. The mounting cavity 2223a not only ensures that the gearbox 31 is at least partially embedded in the internal space of the slot 222a, thus saving space, but also provides support and protection for the gearbox 31 because the mounting cavity 2223a is enclosed on all sides.

[0053] In this embodiment, the gearbox mounting base 2223 has a circular hole, and the outer wall of the gearbox 31 has a countersunk groove 31a corresponding to the circular hole of the gearbox mounting base 2223. The gearbox 31 and the gearbox mounting base 2223 are connected by a tension pin 34. The tension pin 34 can pass through the irregular hole of the gearbox mounting base 2223 and enter the countersunk groove 31a on the outer wall of the gearbox 31 to prevent the gearbox 31 from falling off. Obviously, setting the countersunk groove 31a and the irregular hole, as well as using the tension pin 34, are only one specific way to achieve the fixed connection between the gearbox 31 and the gearbox mounting base 2223. Other connection methods such as plug-in or interference fit can also be used, which will not be described in detail here.

[0054] Please continue to refer to this. Figure 7 , Figure 7 for Figure 1 Front view of the electric slide rail system.

[0055] Combination Figure 3 Understanding that the lower slide rail assembly 1 includes a lower slide rail body 11, which has a first cavity 1a and a second cavity 1b. To ensure that the upper slide rail 21 protrudes from the lower slide rail assembly 1 for connection with the armrest box, the lower slide rail body 11 should have openings to allow passage of the first elongated strip 26 and the second elongated strip 27. That is, the top of the lower slide rail body 11 has a first opening 11a corresponding to the first cavity 1a and a second opening 11b corresponding to the second cavity 1b. It can be seen that both the first opening 11a and the second opening 11b are elongated openings extending along the X-direction. Figure 4 The upper part 21 of the upper slide rail is connected to the first opening 11a and the first insertion part 221 by a first long strip 26 extending along the X direction, passing through the first opening 11a and the first insertion part 221, and is connected to the second opening 11b and the second insertion part 222 by another second long strip 27 extending along the X direction. The width of the first opening 11a or the second opening 11b in the Y direction is greater than the thickness of the long strip in the Y direction, so that the long strip is located in the first opening 11a or the second opening 11b and does not interfere with the sliding. By setting the long strip to connect the corresponding insertion part, the width of the first opening 11a or the second opening 11b can be minimized, so that the first cavity 1a and the second cavity 1b are substantially closed, reducing the amount of impurities falling into the cavity.

[0056] Although the widths of the first opening 11a and the second opening 11b are controlled, they will be exposed after insertion. This embodiment can further cover the gaps caused by the existence of the openings. Figure 2 , 7As shown, the lower slide rail assembly 1 also includes a first trim strip 131 and a second trim strip 132. The first trim strip 131 is used to cover the first opening 11a, and the second trim strip 132 covers the second opening 11b. The first trim strip 131 and the second trim strip 132 also have openings extending in the X direction, but their width in the Y direction is approximately equal to the thickness of the first strip 26 and the second strip 27 in the Y direction. The first trim strip 131 and the second trim strip 132 can be made of soft materials, such as rubber, so that they can be fitted with the first strip 26 or the second strip 27 with zero contact or slight interference, thereby ensuring a sealing effect without hindering the sliding of the insertion part.

[0057] Specifically, a groove can be provided on the lower slide rail body 11, and protrusions corresponding to the groove can be provided on the first trim strip 131 and the second trim strip 132 to achieve a plug-in fit, ensuring a tighter fixation and coverage. Obviously, in addition to plugging, other connection methods, such as screw fixing, can also be used. Figure 7 It can also be seen that the upper surface of the lower slide rail body 11 is provided with a recessed groove, and the first trim strip 131 and the second trim strip 132 can be embedded in the recessed groove. In this way, after the first trim strip 131 and the second trim strip 132 are embedded in the recessed groove, the upper surface of the lower slide rail assembly is flush.

[0058] Please refer to Figures 8 to 9 , Figure 8 for Figure 1 Exploded view of the central transmission system 3; Figure 9 for Figure 1 Cross-sectional view of the transmission system 3.

[0059] As mentioned earlier, a transmission gear 311 is disposed inside the gearbox 31. Further, by... Figure 8 It is known that the transmission gear 311 is specifically a helical gear. The gearbox 31 contains a cooperating helical gear and a worm gear 312. The transmission gear 311 is perpendicular to the worm gear 312. The transmission gear 311 has an internal threaded hole, and the lead screw 32 is inserted into the matching internal threaded hole of the transmission gear 311. The output shaft of the motor 33 is inserted into the worm gear 312 to indirectly drive the transmission gear 311. The lead screw 32 is fixed relative to the lower slide rail assembly 1. Therefore, when the transmission gear 311 rotates, it does not rotate at a stationary position, but simultaneously rotates forward or backward along the lead screw 32. That is, the lead screw 32 converts the circumferential rotational motion of the transmission gear 311 into axial linear motion. The lead screw 32 is fixed to the lower slide rail assembly 1 via the lead screw support 321, and the gearbox 31 is fixed to the upper slide rail assembly 2 via the gearbox mounting base 2223. This allows the upper slide rail assembly 2 to slide along the lower slide rail assembly 1.

[0060] In this embodiment, the gearbox 31 is provided with a helical gear as a transmission gear 311 and a worm gear 312 that cooperates with it, which can convert the power output of the motor 33 set in the upper slide rail assembly 2 from the vertical direction to the horizontal direction, thereby saving space in the X direction and facilitating the arrangement.

[0061] Continue to refer to Figure 8 In this embodiment, the gearbox 31 also includes a gearbox upper cover 313 and a gearbox lower cover 314. The gearbox upper cover 313 and gearbox lower cover 314 are joined together in the vertical direction to form a cavity. The transmission gear 311, worm gear 312, and other components can be housed within this cavity, and the lead screw 32 can pass through it. The gearbox upper cover 313 and gearbox lower cover 314 protect the components within the gearbox 31 and are integrated in one location for easy maintenance and replacement. Bearings 316 and retaining rings 315 are respectively provided at both ends of the axial direction of the transmission gear 311. The bearings 316 and retaining rings 315 ensure smoother movement of the gearbox 31 relative to the lead screw 32 and also serve a positioning function. Furthermore, the gearbox 31 may also have a protective sleeve 317, which also serves to protect the gearbox 31.

[0062] Let's look again. Figure 4 , Figure 5 as well as Figure 7 In this embodiment, the upper slide rail assembly 2 also includes a Y-direction gap-eliminating component 24 and a Z-direction gap-eliminating component 25 (wherein the Y and Z directions are already...). Figure 7 (As shown in the diagram). A Y-direction gap-eliminating assembly 24 and a Z-direction gap-eliminating assembly 25 are provided between the first insertion part 221 and the second insertion part 222 and the lower slide rail assembly 1. (See diagram). Figure 4 As shown, the Y-direction backlash elimination assembly 24 includes a backlash elimination bearing 241, a backlash elimination bearing shaft 242, and a backlash elimination bracket 243. The backlash elimination bearing shaft 241 is inserted into the backlash elimination bearing shaft 242, and the backlash elimination bearing shaft 242 is fixedly connected to the backlash elimination bracket 243. The connection method includes, but is not limited to, riveting. The backlash elimination bracket 243 is a bent bracket, and its upper surface is in contact with the lower surface of the top insertion plate 2221. The backlash elimination bracket 243 and the top insertion plate 2221 can be fixedly connected. The side of the backlash elimination bearing 242 is in contact with the inner surface of the side of the lower slide rail assembly 1, thereby achieving the limitation in the Y direction and ensuring that the upper slide rail assembly 2 will not deviate in the Y direction. After the upper slide rail assembly 2 is installed, the Y-direction backlash can be eliminated. At the same time, the backlash elimination bearing 241 ensures that the Y-direction backlash elimination assembly 24 can reciprocate along the side of the lower slide rail assembly 1, and also makes the movement smoother. After the clearance-free bearing 241 is assembled with the insertion part of the upper slide rail assembly 2, it is installed into the lower slide rail assembly 1.

[0063] The Z-direction gap elimination component 25 and the top plug plate 2221 are engaged. The top plug plate 2221 can be provided with a slot. The Z-direction gap elimination component 25 has a certain deformation capability to be engaged in the slot. After the Z-direction gap elimination component 25 is installed on the top plug plate 2221, its top protrudes. The upper surface of the Z-direction gap elimination component 25 is in contact with the inner surface of the top of the upper slide rail assembly 1, thereby achieving the limit of the Z direction and ensuring that the upper slide rail assembly 2 will not deviate in the Z direction. The Z-direction gap can be eliminated after the upper slide rail assembly 2 is installed.

[0064] Please continue to refer to this. Figure 10 , Figure 10 for Figure 1 Exploded view of the power supply harness assembly 4.

[0065] The electric slide rail system in this embodiment also includes a power supply harness assembly. Specifically, the power supply harness assembly 4 may include a harness 41 and a cable chain 42. The cable chain 42 has a cable chain cavity 42a extending along its length and a guide groove 42a. The harness 41 can pass into the cable chain cavity, thus constraining and guiding its movement. Correspondingly, a boss 12 (shown in the figure) is provided in the first cavity 1a. Figure 3 The boss 12 can pass through the guide groove 42a to guide and limit the drag chain 42. One end of the power supply harness assembly 4 is also provided with a hook 421. Specifically, one end of the drag chain 42 has a hook that can hook onto the partition wall 14. Both the partition wall 14 and the hook 421 are provided with corresponding connection holes, so that one end of the power supply harness assembly 4 can be connected and fixed to the lower slide rail assembly 1. The other end of the power supply harness assembly 4 is connected to the upper slide rail assembly 2. The power supply harness assembly 4 is also connected to the wiring harness of the vehicle body, thereby realizing the power supply to the electric slide rail system.

[0066] The electric sliding rail system in this embodiment is applicable to automobiles, which include an armrest box. Since the armrest box needs to be movable, the electric sliding rail system of this embodiment can be used. The lower sliding rail assembly 1 is installed on the floor of the automobile, and the armrest box is connected to the upper sliding rail assembly 2. Automobiles including the electric sliding rail system of the above embodiment also have the same technical effects as those in the above embodiments, and will not be described again.

[0067] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An electric slide rail system, characterized in that, It includes a lower slide rail assembly (1), an upper slide rail assembly (2), and a transmission system (3); the upper slide rail assembly (2) is slidably connected to the lower slide rail assembly (1); The transmission system (3) includes a lead screw (32), a gearbox (31), and a motor (33). The lead screw (32) is fixedly connected to the lower slide rail assembly (1), and the gearbox (31) is fixedly connected to the upper slide rail assembly (2). The gearbox (31) has a transmission gear (311). The motor (33) directly or indirectly drives the transmission gear (311). The lead screw (32) can be inserted into the gearbox (31), and the lead screw (32) and the transmission gear (311) are in transmission cooperation. The electric slide rail system also includes a power supply harness assembly (4). The lower rail assembly (1) has a first cavity (1a) and a second cavity (1b) that are independent of each other; the power supply harness assembly (4) is located in the first cavity (1a), and the transmission system (3) is located in the second cavity (1b).

2. The electric slide rail system according to claim 1, characterized in that, The upper slide rail assembly (2) includes an upper slide rail upper part (21) and an upper slide rail lower part (22), wherein the upper slide rail upper part (21) is located above the lower slide rail assembly (1); The lower part (22) of the upper slide rail includes a first insertion part (221) and a second insertion part (222). The first insertion part (221) can be inserted into the first cavity (1a), and the second insertion part (222) can be inserted into the second cavity (1b). The first insertion part (221) and the second insertion part (222) are supported on the lower slide rail assembly (1) by the first roller assembly (231) and the second roller assembly (232).

3. The electric slide rail system according to claim 2, characterized in that, The second plug-in portion (222) includes a top plug-in plate (2221) and at least two opposing side plug-in plates (2222), with a slot (222a) formed between the top plug-in plate (2221) and the side plug-in plates (2222); the second plug-in portion (222) is provided with a gearbox mounting base (2223), which is located in the slot (222a).

4. The electric slide rail system according to claim 3, characterized in that, The gearbox mounting base (2223) has a mounting cavity (2223a), and the gearbox (31) is fixed in the mounting cavity (2223a).

5. The electric slide rail system according to any one of claims 1-4, characterized in that, The gearbox (31) is equipped with a matching helical gear and a worm (312). The helical gear and the worm (312) are connected in one or more stages of transmission. The lead screw (32) is inserted into the helical gear, which is the transmission gear (311). The motor (33) drives the worm (312) to indirectly drive the transmission gear (311).

6. The electric slide rail system according to claim 3 or 4, characterized in that, The upper slide rail assembly (2) further includes a Y-direction gap elimination component (24) and a Z-direction gap elimination component (25); the first plug-in part (221) and the second plug-in part (222) are each provided with the Y-direction gap elimination component (24) and the Z-direction gap elimination component (25) between them and the lower slide rail assembly (1). The Y-axis backlash elimination assembly (24) includes a backlash elimination bearing (241), a backlash elimination bearing shaft (242), and a backlash elimination bracket (243). The backlash elimination bearing (241) is inserted into the backlash elimination bearing shaft (242), and the backlash elimination bearing shaft (242) is fixedly connected to the backlash elimination bracket (243). The upper surface of the backlash elimination bracket (243) is in contact with the lower surface of the top plug plate (2221). The side of the backlash elimination bearing (241) is in contact with the inner surface of the side of the lower slide rail assembly (1). The Z-direction gap elimination component (25) is snapped into the top plug plate (2221), and the upper surface of the Z-direction gap elimination component (25) is in contact with the inner surface of the top of the lower slide rail assembly (1).

7. The electric slide rail system according to any one of claims 1-4, characterized in that, The power supply harness assembly (4) includes a harness (41) and a cable chain (42), the cable chain (42) having a cable chain cavity and a guide groove (42a), and the harness (41) passing through the cable chain cavity; A boss (12) is provided in the first cavity (1a), and the boss (12) passes through the guide groove (42a); one end of the power supply harness assembly (4) is connected to the boss (12), and the other end is connected to the upper slide rail assembly (2).

8. The electric slide rail system according to claim 2, characterized in that, The lower rail assembly (1) includes a lower rail body (11), the lower rail body (11) having a first cavity (1a) and a second cavity (1b), the top of the lower rail body (11) having a first opening (11a) corresponding to the first cavity (1a) and a second opening (11b) corresponding to the second cavity (1b), the first plug-in part (221) passing through the first opening (11a), and the second plug-in part (222) passing through the second opening (11b). The lower rail assembly (1) further includes a first trim strip (131) and a second trim strip (132), the first trim strip (131) covering the first opening (11a) and the second trim strip (132) covering the second opening (11b).

9. A car, characterized in that, The system includes an armrest box and an electric slide rail system, wherein the electric slide rail system is the electric slide rail system according to any one of claims 1-8; the lower slide rail assembly (1) is installed on the floor of the vehicle, and the armrest box is connected to the upper slide rail assembly (2).

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