Electric sliding rail dustproof device for automobile
By incorporating dustproof grooves and pre-tightening mechanisms into the electric sliding rails in the car cabin, the problem of foreign objects and dust entering the rails is solved, achieving both sealing and improved aesthetics.
Patent Information
- Application Number
- CN202511810925.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-02-24
AI Technical Summary
The sliding grooves of existing electric sliding rails in car cabins are prone to allowing foreign objects and dust to enter, leading to problems such as obstructed sliding, increased noise, and difficulty in removal.
A dustproof device for an electric sliding rail in automobiles has been designed. By setting dustproof strip grooves on both sides of the lower rail and using a dustproof strip pre-tightening mechanism and guide wheel system, the dustproof strip is made to be taut and fit tightly against the lower rail, sealing the sliding groove and preventing foreign objects and dust from entering.
It effectively prevents foreign objects and dust from entering the slide rail, reduces noise, and improves the ease of use and aesthetics of the slide rail.
Smart Images
Figure CN121552923A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of automotive electric slide rails, specifically relating to a dustproof device for automotive electric slide rails. Background Technology
[0002] With the increasing prevalence of electric and intelligent vehicles, more and more cars are integrating more functions, such as refrigerators, into the passenger side dashboard. However, fixed dashboards often fail to adequately serve all passengers, especially in large SUVs and MPVs. Rear passengers often need to unbuckle their seatbelts and lean forward to use them, which is extremely inconvenient and even poses safety risks. Therefore, more and more cars are incorporating sliding dashboards to better serve both front and rear passengers.
[0003] Currently, most electric sliding rails for car cabins have open, wide sliding grooves to enable the sliding function. As a result, foreign objects, dust, and other debris can easily fall into the sliding rail, causing problems such as obstructed sliding, increased noise, and difficulty in removal. Summary of the Invention
[0004] The purpose of this invention is to provide a dustproof device for electric sliding rails in automobiles, which aims to prevent foreign objects and dust from falling into the lower rail through a dustproof strip.
[0005] This invention is mainly achieved through the following technical solutions: An electric sliding rail dustproof device for automobiles includes an upper rail, a lower rail, a dustproof strip, and a guide bracket. The upper rail is slidably mounted on both sides of the top of the lower rail, and a first pre-tensioning mechanism and a second pre-tensioning mechanism are respectively provided at the front and rear ends of the lower rail. A guide bracket is provided on the inner side of the upper rail, and dustproof strip grooves are provided on both sides of the lower rail along the length direction. The two ends of the dustproof strip rotatably pass through the guide bracket and through the dustproof strip groove, and are connected to the first pre-tensioning mechanism and the second pre-tensioning mechanism to keep the dustproof strip in a taut state and in close contact with the dustproof strip groove of the lower rail.
[0006] To better realize the present invention, the guide bracket is further provided with a lower guide wheel and an upper guide wheel rotatably arranged from the outside to the inside at both ends, and the dustproof strip passes through the upper guide wheel and the lower guide wheel at both ends, respectively. The transmission surface of the upper guide wheel is provided with a limit groove corresponding to the dustproof strip.
[0007] To better realize the present invention, the first pre-tensioning mechanism further includes a dustproof strip front pressure plate, a dustproof strip front gasket, a dustproof strip pre-tensioning bracket and a dustproof strip pre-tensioning spring. The front end of the lower rail is detachably provided with a dustproof strip pre-tensioning bracket. One end of the dustproof strip is fixedly clamped between the dustproof strip front pressure plate and the dustproof strip front gasket, and the dustproof strip front pressure plate is connected to the dustproof strip pre-tensioning bracket through the dustproof strip pre-tensioning spring.
[0008] To better realize the present invention, the dustproof strip pre-tightening bracket is further provided with a pre-tightening platform and a support. The pre-tightening platform is connected to the dustproof strip pre-tightening spring, and the support is connected to the lower rail through a pre-tightening bolt. The support is provided with a round hole corresponding to the pre-tightening bolt.
[0009] To better realize the present invention, the two sides of the dustproof strip pretension bracket are respectively hinged to the lower rail through pretension bracket pins. The dustproof strip pretension bracket is provided with mounting holes, and bolts pass through the mounting holes and are connected to the lower rail for locking the dustproof strip pretension bracket and the lower rail.
[0010] To better realize the present invention, the second pre-tightening mechanism further includes a dustproof strip rear pressure plate, a dustproof strip rear gasket, and a dustproof strip mounting bracket. The dustproof strip mounting bracket is detachably provided at the rear end of the lower rail. The other end of the dustproof strip is fixedly clamped between the dustproof strip rear pressure plate and the dustproof strip rear gasket, and the dustproof strip rear pressure plate is connected to the dustproof strip mounting bracket.
[0011] To better realize the present invention, the tops of the first pre-tightening mechanism and the second pre-tightening mechanism are respectively snapped with a front cover plate and a rear cover plate.
[0012] To better realize the present invention, a guide slope is further provided at the bottom of the dustproof strip groove.
[0013] The beneficial effects of this invention are as follows: This invention uses a dustproof strip to seal the sliding groove of the electric slide rail, preventing foreign objects and dust from falling in. Specifically, the dustproof strip is tilted downwards and held in a stretched state by a pre-tension spring, ensuring it adheres tightly to the dustproof groove on the lower rail. Furthermore, this invention utilizes a special surface treatment to give the electric slide rail a uniform color and gloss, enhancing its aesthetic appeal. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the electric sliding rail dustproof device for automobiles according to the present invention; Figure 2 A schematic diagram showing the connection structure between the front dustproof strip and the lower rail, and the dustproof strip pre-tightening bracket; Figure 3A schematic diagram showing the connection structure between the dustproof strip at the rear end, the lower rail, and the dustproof strip mounting bracket; Figure 4 This is a schematic diagram of the connection structure between the dustproof strip at the rear and the pressure plate behind the dustproof strip; Figure 5 This is a schematic diagram of the connection structure between the front dustproof strip and the front pressure plate of the dustproof strip; Figure 6 This is a schematic diagram of the upper guide wheel and the lower guide wheel; Figure 7 This is a schematic diagram of the connection structure between the dustproof strip and the guide bracket; Figure 8 A schematic diagram showing the connection structure between the guide bracket and the upper and lower guide wheels; Figure 9 A schematic diagram of the structure for installing the dustproof strip bracket; Figure 10 A schematic diagram of the connection structure between the dustproof strip and the dustproof strip pretensioner bracket; Figure 11 This is a schematic diagram of the lower rail structure; Figure 12 This is a schematic diagram of the cross-sectional mechanism of the lower rail; Figure 13 A schematic diagram of the structure of the dustproof strip pretensioner bracket; Figure 14 This is a schematic diagram of the connection structure between the dustproof strip pretensioner bracket and the pretensioner bracket pin.
[0015] Wherein: 1-lower rail, 101-guide slope, 102-dustproof strip groove, 103-pre-tightening threaded hole, 2-upper rail, 3-rear cover plate, 4-front cover plate, 5-dustproof strip, 6-guide bracket, 7-upper guide wheel, 701-upper limit surface, 702-limit groove, 8-lower guide wheel, 801-lower limit surface, 9-lower guide wheel pin, 10-upper guide wheel pin, 11-dustproof strip front pressure plate, 1101-connecting hole. 12-Front gasket of dustproof strip, 13-Rear pressure plate of dustproof strip, 14-Rear gasket of dustproof strip, 15-Pre-tension spring of dustproof strip, 16-Pre-tension bracket of dustproof strip, 1601-Pre-tension mounting platform, 1602-Mounting hole, 1603-Round hole, 17-Dustproof strip mounting bracket, 1701-Mounting platform, 18-Pre-tension bolt, 1801-Pre-tension thread, 1802-Boss, 1803-Cylindrical surface, 20-Pre-tension bracket pin. Detailed Implementation
[0016] Example 1: A dustproof device for electric sliding rails in automobiles, such as Figure 1As shown, the system includes an upper rail 2, a lower rail 1, a dustproof strip 5, and a guide bracket 6. The upper rail 2 is slidably mounted on both sides of the top of the lower rail 1, and a dustproof strip pre-tensioning bracket 16 and a dustproof strip mounting bracket 17 are respectively mounted on the front and rear ends of the lower rail 1. The guide bracket 6 is mounted on the inner side of the upper rail 2, and dustproof strip grooves 102 are respectively provided on both sides of the lower rail 1 along the length direction. The two ends of the dustproof strip 5 rotate through the guide bracket 6 and through the dustproof strip grooves 102, and are connected to the dustproof strip pre-tensioning bracket 16 and the dustproof strip mounting bracket 17, so as to keep the dustproof strip 5 in a taut state and in close contact with the dustproof strip grooves 102 of the lower rail 1.
[0017] Specifically, the lower rail 1 is made of aluminum alloy, which is formed by extrusion and machined to form special features; the upper rail 2 is made of aluminum alloy, which is formed by extrusion and machined to form special features; the dustproof strip 5 is made of stainless steel, and its surface appearance features such as color and gloss are formed by vacuum coating and other methods.
[0018] Preferably, such as Figure 2 and Figure 11 As shown, the lower rail 1 includes a guide slope 101, a dustproof strip groove 102, and a pre-tightening threaded hole 103. The bottom of the dustproof strip groove 102 is provided with a guide slope 101, and the front end face of the lower rail 1 is detachably connected to the dustproof strip pre-tightening bracket 16 through the pre-tightening threaded hole 103.
[0019] Preferably, the dustproof strip 5 has through holes formed at both ends for connecting the dustproof strip pre-tensioning bracket 16 and the dustproof strip mounting bracket 17. Specifically, the front pressure plate 11 of the dustproof strip has a connecting hole 1101; one end of the dustproof strip 5 is riveted to the front pressure plate 11 and the front gasket 12 of the dustproof strip by rivets; the other end is riveted to the rear pressure plate 13 and the rear gasket 14 of the dustproof strip. The front pressure plate 11 of the dustproof strip is connected to the dustproof strip pre-tensioning bracket 16 through the dustproof strip pre-tensioning spring 15, and the rear pressure plate 13 of the dustproof strip is connected to the dustproof strip mounting bracket 17.
[0020] Preferably, such as Figures 6-8 as well as Figure 12 As shown, the upper guide wheel 7 has an upper limit surface 701 and a limit groove 702; the lower guide wheel 8 has a lower limit surface 801; the upper guide wheel 7 is assembled to the guide bracket 6 through the upper guide wheel pin 10, and is axially positioned with the guide bracket 6 through the upper limit surface 701; the lower guide wheel 8 is assembled to the guide bracket 6 through the lower guide wheel pin 9, and is axially positioned with the guide bracket 6 through the lower limit surface 801; the guide bracket 6 is connected to the upper rail 2 by bolts.
[0021] The dustproof strip 5 passes sequentially through the lower guide wheel 8, the upper guide wheel 7, the upper guide wheel 7, and the lower guide wheel 8, and is limited in the Y direction by the upper limit surface 701 of the upper guide wheel 7; the dustproof strip 5 is placed in the dustproof strip groove 102 of the lower rail 1. Specifically, the guide bracket 6 and the lower guide wheel 8 mounted on the guide bracket 6 will press the dustproof strip 5 onto the dustproof strip groove 102 of the lower rail 1; the upper guide wheel 7 mounted on the guide bracket 6 will raise the dustproof strip 5 to avoid the components on the upper rail 2; the upper limit surface 701 on the guide wheel will limit the dustproof strip 5 to the center line of the dustproof strip groove 102.
[0022] Preferably, such as Figure 2 , Figure 3 , Figures 9-11 as well as Figure 13 and Figure 14 As shown, the dustproof strip pre-tightening bracket 16 has a pre-tightening platform, a waist-shaped hole and a support. The support has a round hole, and the center point of the pre-tightening platform is on the extension surface of the guide slope 101 of the lower rail 1.
[0023] The dustproof strip mounting bracket 17 has a mounting platform 1701, and the center point of the platform is on the extension surface of the guide slope 101 of the lower rail 1. The rear end of the dustproof strip 5 is connected to the mounting platform 1701 on the dustproof strip mounting bracket 17 through the dustproof strip rear pressure plate 13, and the dustproof strip mounting bracket 17 is connected to the lower rail 1 by bolts.
[0024] One end of the dustproof strip pre-tension spring 15 is hung on the connecting hole 1101 of the dustproof strip front pressure plate 11; the front end of the dustproof strip 5 is hung on the pre-tensioning bracket 16 of the dustproof strip pre-tension spring 15 through the dustproof strip pre-tension spring 15, and the dustproof strip pre-tension spring 15 is in a stretched state after installation. After assembly, the dustproof strip 5 is in contact with the dustproof strip groove 102 of the lower rail 1 under the limiting of the upper guide wheel 7, the lower guide wheel 8, the lower rail 1, and the dustproof strip pre-tension spring 15. Specifically, at both ends of the lower rail 1, the dustproof strip 5 is tilted downwards, and under the action of the dustproof strip pre-tension spring 15, the dustproof strip 5 is in a taut state, so that it can be in contact with the dustproof strip groove 102 of the lower rail 1.
[0025] Preferably, the dustproof strip pre-tightening bracket 16 is connected to the lower rail 1 via a pre-tightening bolt 18. Preferably, the pre-tightening bolt 18 has a pre-tightening thread 1801, a boss 1802, and a cylindrical surface 1803. The pre-tightening bolt 18 passes through a circular hole and connects to the pre-tightening threaded hole 103 on the lower rail 1. The pre-tightening bolt 18 is screwed into the pre-tightening threaded hole 103 on the lower rail 1 via the pre-tightening thread 1801, and the other end is in contact with the circular hole on the dustproof strip pre-tightening bracket 16 via the cylindrical surface 1803, and can rotate freely.
[0026] Preferably, such as Figure 13 and Figure 14As shown, during installation, the dustproof strip pretension bracket 16 and the lower rail 1 are hinged together by the pretension bracket pin 20. Then, the dustproof strip pretension bracket 16 is rotated upward around the pretension bracket pin 20. Then, the dustproof strip pretension spring 15 is hung on the mounting platform of the dustproof strip pretension bracket 16. Finally, the bolt is passed through the through hole of the dustproof strip pretension bracket 16 and screwed into the threaded hole of the lower rail 1. After the bolt is fully tightened, the dustproof strip pretension spring 15 is in a stretched state, thus achieving the pretensioning of the dustproof strip 5.
[0027] Preferably, the front cover plate 4 and the rear cover plate 3 are connected to the dustproof strip pre-tightening bracket 16 and the dustproof strip mounting bracket 17 by clips to achieve a sealing and aesthetic effect on both ends of the lower rail 1.
[0028] During assembly, the rear end of the dustproof strip 5 is first attached to the mounting bracket 1701 of the dustproof strip mounting bracket 17; the pre-tightening bolt 18 is fully screwed into the pre-tightening screw hole of the lower rail 1, and then the dustproof strip pre-tightening bracket 16 is placed on the lower rail 1, with its round hole aligning with the cylindrical surface 1803 of the pre-tightening bolt 18 along the axis. Then, a bolt is passed through the oblong hole of the dustproof strip pre-tightening bracket 16 and screwed into the threaded hole of the lower rail 1, leaving half a turn untightened. After attaching the front end of the dustproof strip 5 to the pre-tightening bracket 16, the pre-tightening bolt 18 is tightened in the loosening direction using a tool until the dustproof strip pre-tightening bracket 16 is pushed by the protrusion 1802 of the pre-tightening bolt 18 until the oblong hole is blocked by the bolt. At this time, the dustproof strip pre-tightening spring 15 is in a stretched state, and the dustproof strip 5 is in a taut state.
[0029] During use, this invention ensures that the sliding groove of the lower rail 1 remains completely sealed even when the upper rail 2 is not in use, preventing foreign objects and dust from falling in, through the bending and deformation of the dustproof strip 5. Secondly, the rotation of the upper guide wheel 7 and lower guide wheel 8 prevents sliding friction between the dustproof strip 5 and the upper and lower guide wheels 7 and 8, ensuring minimal noise and wear on the surface treatment of the dustproof strip 5. Furthermore, a PVD process can be used to create a surface treatment layer on the dustproof strip 5 with the same color and gloss as the lower rail 1, achieving a seamless visual effect and enhancing the overall aesthetics of the slide rail assembly.
[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.
Claims
1. A dustproof device for an electric sliding rail in automobiles, characterized in that, The system includes an upper rail (2), a lower rail (1), a dustproof strip (5), and a guide bracket (6). The upper rail (2) is slidably provided on both sides of the top of the lower rail (1), and the front and rear ends of the lower rail (1) are respectively provided with a first pre-tightening mechanism and a second pre-tightening mechanism. The guide bracket (6) is provided on the inner side of the upper rail (2), and the dustproof strip grooves (102) are provided on both sides of the lower rail (1) along the length direction. The two ends of the dustproof strip (5) rotate through the guide bracket (6) and through the dustproof strip grooves (102) respectively, and are connected to the first pre-tightening mechanism and the second pre-tightening mechanism to keep the dustproof strip (5) in a taut state and in contact with the dustproof strip grooves (102) of the lower rail (1).
2. The dustproof device for an electric sliding rail in an automobile according to claim 1, characterized in that, The guide bracket (6) has a lower guide wheel (8) and an upper guide wheel (7) arranged in sequence from the outside to the inside at both ends. The dustproof strip (5) passes through the upper guide wheel (7) and the lower guide wheel (8) at both ends. The transmission surface of the upper guide wheel (7) is provided with a limit groove (702) corresponding to the dustproof strip (5).
3. The dustproof device for an electric sliding rail in an automobile according to claim 1, characterized in that, The first pre-tightening mechanism includes a dustproof strip front pressure plate (11), a dustproof strip front gasket (12), a dustproof strip pre-tightening bracket (16), and a dustproof strip pre-tightening spring (15). The front end of the lower rail (1) is detachably provided with a dustproof strip pre-tightening bracket (16). One end of the dustproof strip (5) is fixedly clamped between the dustproof strip front pressure plate (11) and the dustproof strip front gasket (12), and the dustproof strip front pressure plate (11) is connected to the dustproof strip pre-tightening bracket (16) through the dustproof strip pre-tightening spring (15).
4. The dustproof device for an electric sliding rail in an automobile according to claim 3, characterized in that, The dustproof strip pre-tightening bracket (16) is provided with a pre-tightening platform and a support. The pre-tightening platform is connected to the dustproof strip pre-tightening spring (15). The support is connected to the lower rail (1) through a pre-tightening bolt (18). The support is provided with a round hole corresponding to the pre-tightening bolt (18).
5. A dustproof device for an electric sliding rail in an automobile according to claim 3 or 4, characterized in that, The dustproof strip pretension bracket (16) is hinged to the lower rail (1) on both sides by pretension bracket pins (20). The dustproof strip pretension bracket (16) is provided with mounting holes. Bolts pass through the mounting holes and are connected to the lower rail (1) to lock the dustproof strip pretension bracket (16) and the lower rail (1).
6. The dustproof device for an electric sliding rail in an automobile according to claim 1, characterized in that, The second pre-tightening mechanism includes a dustproof strip rear pressure plate (13), a dustproof strip rear gasket (14), and a dustproof strip mounting bracket (17). The rear end of the lower rail (1) is detachably provided with a dustproof strip mounting bracket (17). The other end of the dustproof strip (5) is fixedly clamped between the dustproof strip rear pressure plate (13) and the dustproof strip rear gasket (14), and the dustproof strip rear pressure plate (13) is connected to the dustproof strip mounting bracket (17).
7. The dustproof device for an electric sliding rail in an automobile according to claim 1, characterized in that, The top of the first pre-tightening mechanism and the second pre-tightening mechanism are respectively snapped with a front cover plate (4) and a rear cover plate (3).
8. The dustproof device for an electric sliding rail in an automobile according to claim 1, characterized in that, The bottom of the dustproof strip groove (102) is provided with a guide slope (101).