Seat rail for a vehicle

Abstract

A seat rail for a vehicle includes a rail gap cover and a gap cover, wherein the rail gap cover is combined with a moving rail, and the gap cover is combined with the rail gap cover to close a gap between a fixed rail and the moving rail regardless of movement of the moving rail, thereby being able to prevent foreign substances from entering the fixed rail.

Description

Technical Field

[0001] This disclosure relates to a seat rail for a vehicle. Background Technology

[0002] The statements in this section provide only background information in relation to this disclosure, and such background information may not constitute prior art.

[0003] Typically, car seats are installed so that they can slide back and forth on seat rails.

[0004] The basic structure of the seat rail consists of a fixed rail and a movable rail. The fixed rail extends in the front-to-back direction of the vehicle and is fixed to the floor panel. The movable rail is combined with the fixed rail to move back and forth along the fixed rail, and the movable rail is combined with the seat in the vehicle.

[0005] Because the moving guide rail is moved by a motor, the seat connected to it is called a powered seat or electric seat. For powered seats, several gears (pinion gears, rack and pinion gears, etc.) can be installed on the fixed guide rail to move the moving guide rail.

[0006] The fixed guide rail has a slit-like gap in the front-to-back direction, into which the movable guide rail is inserted and moves back and forth along the fixed guide rail. We have discovered a drawback: foreign objects can enter the fixed guide rail through the gap between the fixed and movable guide rails, causing damage to the seat guide rail.

[0007] Even if the gaps in the fixed guide rails are covered by carpet covering the floor panels in the vehicle, there still needs to be a slit-like gap in the carpet in the front-to-back direction for the moving guide rails to move. Therefore, the problem of foreign objects entering the fixed guide rails through the gaps in the carpet still exists.

[0008] In particular, we found that because the seat rails used in the second or third row of seats in sport utility vehicles (SUVs) or multi-purpose vehicles (MPVs) are longer than those in ordinary cars, and the gap between the fixed and moving rails in the longer rails is longer compared to ordinary seat rails, there is a corresponding increase in the amount of foreign matter entering the fixed rails.

[0009] The above descriptions provided as related technologies of this disclosure are only for the purpose of helping to understand the background of this disclosure, and these descriptions should not be construed as being included in related technologies known to those skilled in the art. Summary of the Invention

[0010] This disclosure provides a seat rail for vehicles that can prevent or stop foreign objects from entering the fixed rail by closing the gap between the fixed rail and the movable rail, thereby improving durability and commercial value.

[0011] In one embodiment of this disclosure, a seat rail for a vehicle includes: a fixed rail having a rail slot extending along the longitudinal direction of the fixed rail; a movable rail having a lower end inserted through the rail slot into the fixed rail and movable back and forth along the rail slot; a guide bracket coupled to cover the fixed rail and having a bracket slot extending along the longitudinal direction of the guide bracket and connected to the rail slot; a rail gap cover coupled to the movable rail, the rail gap cover being fitted in the rail slot and the bracket slot and movable with the movable rail; and a gap cover coupled to the rail gap cover and movable with the movable rail and the rail gap cover, the gap cover being supported by the guide bracket to keep the bracket slot closed during movement. The rail gap cover may include a left cover and a right cover, the left cover and the right cover being coupled to each other on the left and right sides to cover the lower portion of the movable rail.

[0012] The guide bracket may include a left bracket and a right bracket, which are combined to cover the outer side of the fixed guide rail except for the guide rail gap, and the upward-opening bracket gap is formed by assembling the left bracket and the right bracket.

[0013] The front and rear ends of the guide bracket may have several inwardly protruding bracket bosses, and the bracket bosses may contact the front and rear ends of the fixed guide rail located inside the guide bracket, thereby fixing the position of the fixed guide rail in the longitudinal direction of the vehicle.

[0014] The guide bracket may have a guide groove connected in the shape of an elliptical track, and the guide rail gap cover and the slot cover may be inserted into the guide groove to be able to move along the guide groove.

[0015] The guide bracket may have an elliptical track-shaped guide groove, which may include: an upper groove that extends straight along the longitudinal direction of the guide bracket and is formed at the upper portion of the guide bracket where the bracket slot is formed; a lower groove that is formed below the upper groove and parallel to the upper groove; and a connecting groove that is arc-shaped and includes a front connecting groove connecting the front end of the upper groove and the front end of the lower groove, and a rear connecting groove connecting the rear end of the upper groove and the rear end of the lower groove.

[0016] The guide rail gap cover can be disposed in the upper groove, so that the guide rail gap cover can move back and forth only along the upper groove.

[0017] The slit cover can be configured to be guided into all three of the upper groove, the lower groove, and the connecting groove, such that the slit cover can move along the guide groove, which is in the shape of a guide rail.

[0018] A plurality of flange holes formed through the left and right sides of the guide bracket can be spaced apart from each other in the longitudinal direction of the guide bracket, and the guide rail flange of the fixed guide rail can be positioned to the outside through the flange holes.

[0019] The guide bracket may have guide grooves connected in the shape of an elliptical track, and guide protrusions inserted into the guide grooves and moving along the guide grooves may protrude laterally from the left and right sides of the guide rail gap cover.

[0020] Left and right protruding cover flanges can be formed at the lower end of the guide rail gap cover, and the cover flanges can contact the bottom of the guide rail gap and restrict the guide rail gap cover from moving upward.

[0021] Both ends of the slit cover can be fixed to connecting portions that protrude from the front and rear of the guide rail gap cover in the front-rear direction, thereby connecting the guide rail gap cover and the slit cover into an elliptical track shape.

[0022] Wiring holes can be formed at the guide rail gap cover to allow wiring for electronic components connected to the seat to pass through.

[0023] The gap cover may include: multiple upper covers, each upper cover consisting of a curved portion and several components including the curved portion, the multiple upper covers being arranged in series, protruding through the support gap and covering the support gap; multiple cover rubber components, the multiple cover rubber components being connected to the rear side of the multiple upper covers and connecting the multiple upper covers; and cover hinge portions, the multiple cover hinge portions being connected to the multiple cover rubber components and protruding to the left and right, wherein the two ends of the multiple upper covers connected in series by the multiple cover rubber components can be respectively connected to the front end and the rear end of the guide rail gap cover, thereby connecting the guide rail gap cover and the gap cover into an elliptical track shape.

[0024] A guide groove, connected in the shape of an elliptical track, can be formed in the guide bracket, and the left and right ends of the cover hinge can be inserted into the guide groove and can move along the guide groove.

[0025] The top cover can be made of a rigid injection molding material.

[0026] The guide rail gap cover can be configured to cover the left and right gaps between the movable guide rail and the bracket gap, and the gap cover can be configured to cover the fixed guide rail and the bracket gap.

[0027] According to the disclosed seat rail, the rail gap cover, which is coupled to the movable rail, is inserted into the bracket gap of the guide bracket and the rail gap of the fixed rail. Specifically, regardless of how the movable rail moves, the gap cover coupled to the rail gap cover keeps the gap of the bracket gap closed, thereby allowing the gap between the fixed rail and the movable rail to be closed and removed through the rail gap cover and the gap cover. Therefore, foreign objects can be fundamentally prevented from entering the fixed rail, thus improving durability and commercial value.

[0028] Furthermore, even if the guide bracket is covered by a carpet, the gaps in the carpet can be sealed by the guide rail gap cover and the slit cover, thus preventing foreign objects from entering the fixed guide rail.

[0029] Further applicability will become apparent from the description provided herein. It should be understood that the descriptions and specific examples are intended for illustrative purposes only and are not intended to limit the scope of this disclosure. Attached Figure Description

[0030] To better understand this disclosure, it will now be described with reference to the accompanying drawings, which are given by way of example in various forms, in which:

[0031] Figure 1 This is an exploded perspective view of a seat rail for a vehicle according to one form of this disclosure;

[0032] Figure 2 It shows Figure 1 A view of the combined states;

[0033] Figure 3 yes Figure 2 Cross-sectional view.

[0034] Figure 4 It shows a plan view of the seat rails covered with carpet;

[0035] Figure 5 This is a view showing the fixed guide rail separated from the guide bracket;

[0036] Figure 6 It shows Figure 5 A view of the combined states;

[0037] Figure 7 This is a view showing the fixed guide rail being fixed to the bracket boss;

[0038] Figure 8 This is an exploded perspective view of the movable guide rail and the guide rail clearance cover;

[0039] Figure 9A , Figure 9B and Figure 10 This is a view showing the guide rail gap cover and the slot cover; and

[0040] Figure 11 This is a view showing the slot cover installed in the guide groove of the guide bracket.

[0041] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way. Detailed Implementation

[0042] The following description is exemplary in nature only and is not intended to limit this disclosure, its application, or its use. It should be understood that throughout the drawings, corresponding reference numerals indicate the same or similar parts and features.

[0043] In the following description, the description of the structure or function of the exemplary form based on the concept of this disclosure is intended to describe the exemplary form, and therefore it should be understood that this disclosure may be implemented in various ways, and is not limited to the exemplary form.

[0044] The exemplary forms described herein can be varied in various ways and shapes, and it should be understood that the exemplary forms according to the concept of this disclosure are not limited to the forms described below with reference to the accompanying drawings, but all modifications, equivalents and alternatives are included within the scope and spirit of this disclosure.

[0045] It should be understood that although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, the first element discussed below may be referred to as the second element without departing from the teachings of this disclosure. Similarly, the second element may also be referred to as the first element.

[0046] It should be understood that when a component is referred to as "connected to" or "attached to" another component, it can be directly connected to or directly attached to the other component, or connected to or attached to the other component in the presence of other components between the two components. On the other hand, it should be understood that when a component is referred to as "directly connected to" or "directly attached to" another component, this component can be connected to or attached to the other component without any other components between the two components. Furthermore, the terms used herein to describe the relationship between components, namely "between," "directly located between," "adjacent," or "directly adjacent," should be interpreted in the same manner as above.

[0047] The terminology used in this disclosure is for describing specific exemplary forms only and is not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form. It should be further understood that the terms "comprising" or "having" as used herein mean that the stated feature, reference numeral, step, operation, component, part, or combination thereof is present, but do not exclude the presence or addition of one or more other features, reference numerals, steps, operations, components, parts, or combinations thereof.

[0048] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It must be understood that dictionary definitions of terms have the same meaning in the relevant technical context and should not be ideally or overly formally defined unless the context explicitly specifies otherwise.

[0049] The control unit (controller) of an exemplary form according to this disclosure may be implemented using a non-volatile memory (not shown) and a processor (not shown), the non-volatile memory being configured to store algorithms for controlling the operation of various components of the vehicle or data relating to software commands for executing the algorithms, and the processor being configured to use the data stored in the memory to perform operations described below. The memory and processor may be separate chips. Alternatively, the memory and processor may be integrated into a single chip. The processor may be implemented as one or more processors.

[0050] The following will describe in detail, with reference to the accompanying drawings, an exemplary form of a seat rail for a vehicle according to the present disclosure.

[0051] In some forms of this disclosure, such as Figures 1 to 11 As shown, a seat rail for a vehicle includes: a fixed rail 100 having a rail slot 110 extending along the longitudinal direction of the fixed rail; a movable rail 200 having a lower end inserted into the fixed rail 100 through the rail slot 110 and movable back and forth along the rail slot 110; and a guide bracket 300 connected to cover the fixed rail 100 and having an extension along the longitudinal direction of the guide bracket and connected to the rail slot. 110 includes a bracket gap 310; a guide rail gap cover 400, which is coupled to the movable guide rail 200 and fitted in the guide rail gap 110 and the bracket gap 310, and the guide rail gap cover moves with the movable guide rail 200; and a gap cover 500, which is coupled to the guide rail gap cover 400 to move with the movable guide rail 200 and the guide rail gap cover 400, and the gap cover is supported by a guide bracket 300 to keep the bracket gap 310 closed during movement.

[0052] The fixed guide rail 100 is fixed to the floor panel in the front-rear direction of the vehicle.

[0053] A guide rail slot 110 with an upward opening and extending in the longitudinal direction of the fixed guide rail 100 is formed therein, and the lower end of the movable guide rail 200 is inserted into the fixed guide rail 100 through the guide rail slot 110. The upper end of the movable guide rail 200 protrudes upward from the fixed guide rail 100 to connect to a seat located in the vehicle.

[0054] The guide bracket 300 includes a left bracket 320 and a right bracket 330. The left bracket 320 and the right bracket 330 are joined together on the left and right sides of the fixed guide rail 100 to cover the fixed guide rail 100.

[0055] The left bracket 320 and the right bracket 330 can be joined together by bolts or threaded parts.

[0056] When the left bracket 320 and the right bracket 330 are joined together to cover the fixed guide rail 100, they cover all parts of the fixed guide rail 100 except for the guide rail gap 110.

[0057] When the left bracket 320 and the right bracket 330 are combined to cover the fixed guide rail 100, an upward-opening bracket gap 310 is formed at the guide bracket 300, and the guide rail gap 110 of the fixed guide rail 100 is located below the bracket gap 310, so that the bracket gap 310 and the guide rail gap 110 are connected vertically.

[0058] Several bracket bosses 340 protruding inward are formed at the front and rear ends of the guide bracket 300, and these bracket bosses contact the front and rear ends of the fixed guide rail 100 positioned inside the guide bracket 300, thereby enabling the fixed guide rail 100 to be fixed in the front-back direction.

[0059] An elliptical track-shaped guide groove 350 is formed in the guide bracket 300, and a guide rail gap cover 400 that is coupled with the movable guide rail 200 and a slot cover 500 that is coupled with the guide rail gap cover 400 are inserted into the guide groove 350 so that they can move along the guide groove 350.

[0060] The guide groove 350 includes an upper groove 351, a lower groove 352, and a connecting groove 353. The upper groove extends vertically in the upper portion of the forming support gap 310 of the guide bracket 300. The lower groove is formed below the upper groove 351 and parallel to it. The connecting groove is arc-shaped to connect the front and rear ends of the upper groove 351 and the lower groove 352. In one embodiment, the connecting groove 353 includes a front connecting groove connecting the front ends of the upper groove and the lower groove, and a rear connecting groove connecting the rear ends of the upper groove and the lower groove.

[0061] The guide groove 350 of the guide bracket 300 continuously forms an elliptical track shape through the connection of the upper groove 351, the lower groove 352 and the two connecting grooves 353.

[0062] The guide rail gap cover 400 is installed so that it is guided only in the upper groove 351 of the guide groove 350, so that the guide rail gap cover moves only back and forth along the upper groove 351.

[0063] That is, since the guide rail gap cover 400 is formed in a straight line, the guide rail gap cover can only move along the upper groove 351 and cannot move to the connecting groove 353 and the lower groove 352 of the guide groove 350.

[0064] On the other hand, the slit cover 500, which is combined with the guide rail gap cover 400, is installed so that it can be guided into the upper groove 351, lower groove 352 and connecting groove 353 of the guide groove 350, so that when the moving guide rail 200 and the guide rail gap cover 400 move along the upper groove 351 of the guide groove 350, the slit cover 500 can move along the track-shaped guide groove 350.

[0065] A plurality of flange holes 360 formed through the left and right sides of the guide bracket 300 are spaced apart from each other in the longitudinal direction of the guide bracket 300, and the guide rail flange 120 of the fixing guide rail 100 is positioned outward through the flange holes 360. The guide rail flange 120, which protrudes outward from the fixing guide rail 100 through the flange holes 360, can be fixed to the floor panel.

[0066] The guide rail clearance cover 400 includes a left cover 410 and a right cover 420. The left cover 410 and the right cover 420 are joined together on the left and right sides to cover the lower portion of the movable guide rail 200.

[0067] The left cover 410 and the right cover 420 can be joined together by bolts or threaded fittings.

[0068] When the left cover 410 and the right cover 420 are joined together, a plurality of cover protrusions 430 formed on the guide rail gap cover 400 pass through the lower part of the movable guide rail 200, thereby allowing the movable guide rail 200 and the guide rail gap cover 400 to be joined together.

[0069] Laterally protruding guide protrusions 440 are formed on the left and right sides of the guide rail clearance cover 400. The guide protrusions 440 are inserted into the guide grooves 350 of the guide bracket 300 to move along the guide grooves 350.

[0070] The guide protrusion 440 of the guide rail clearance cover 400 is installed to be guided only in the upper groove 351 of the guide groove 350, so it moves only forward and backward along the upper groove 351.

[0071] Left and right protruding cover flanges 450 are formed at the lower end of the guide rail gap cover 400. The cover flanges 450 contact the bottom of the guide rail gap 110 that fixes the guide rail 100, thereby restricting the upward movement of the guide rail gap cover 400.

[0072] When the guide rail gap cover 400 is inserted into both the bracket gap 310 and the guide rail gap 110, as Figure 3 As shown, the guide protrusion 440 of the guide rail gap cover 400 is inserted into the upper groove 351 of the guide groove 350 of the guide bracket 300, and the cover flange 450 of the guide rail gap cover 400 passes through the guide rail gap 110 and then contacts the bottom of the guide rail gap 110.

[0073] Connecting portions 460 protruding in the front and rear directions are formed on the front and rear portions of the guide rail gap cover 400, and both ends of the gap cover 500 are fixed to the connecting portions 460. Therefore, the guide rail gap cover 400 and the gap cover 500 can be connected to form an elliptical track shape.

[0074] A wiring hole 470 can be formed at the guide rail gap cover 400 to allow wiring of electronic components connected to the seat to pass through.

[0075] The slit cover 500 includes: a plurality of upper covers 510, which are composed of a curved portion and several components including the curved portion, the upper covers being arranged in series, exposed through the support slit 310 and covering the support slit 310; a plurality of cover rubber parts 520, which are connected to the rear side of the upper covers 510 and connect the plurality of upper covers 510; and a plurality of cover hinges 530, which are connected to the cover rubber parts 520 and protrude to the left and right.

[0076] Each top cover 510 can be formed into a rectangular shape.

[0077] Multiple top covers 510 connected in series by cover rubber parts 520 are respectively connected at both ends to the connecting parts 460 located at the front and rear ends of the guide rail gap cover 400, so that the guide rail gap cover 400 and the gap cover 500 can be connected to form an elliptical track shape.

[0078] Both ends of the cover hinge 530 are inserted into the guide groove 350 of the guide bracket 300 to move along the guide groove 350.

[0079] When the moving guide rail 200 and the guide rail gap cover 400 move along the upper groove 351 of the guide groove 350, the cover hinge portion 530 of the gap cover 500 can move along the entire guide groove 350 that forms the shape of the track.

[0080] That is, the hinge 530 of the slit cover 500 can move along the elliptical track through the upper groove 351, lower groove 352 and connecting groove 353 of the guide groove 350.

[0081] According to this disclosure, one form of the cover 510 is made of a rigid injection-molded material to ensure strength, but is not limited thereto, and may be made of a soft rubber material if needed.

[0082] According to another form of the present disclosure, the guide rail gap cover 400 is configured to cover the left and right gaps between the movable guide rail 200 and the bracket gap 310, and the gap cover 500 is configured to cover the fixed guide rail 100 and the bracket gap 310.

[0083] As described above, according to the seat rail of this disclosure, a rail gap cover 400, which engages with the movable rail 200, is inserted into the bracket slot 310 of the guide bracket 300 and the rail slot 110 of the fixed rail. In particular, regardless of how the movable rail 200 moves, a slot cover 500, which engages with the rail gap cover 400, keeps the bracket slot 310 closed, thereby closing and removing the gap between the fixed rail 100 and the movable rail 200 through the rail gap cover 400 and the slot cover 500. Therefore, foreign objects can be prevented or avoided from entering the fixed rail 100, thus improving durability and commercial value.

[0084] In addition, such as Figure 4 As shown, even if the guide bracket 300 is covered by the carpet 700, the gaps in the carpet 700 can be sealed by the guide rail gap cover 400 and the gap cover 500, thus preventing foreign matter from entering the fixed guide rail 100.

[0085] Although this disclosure has been described with reference to the exemplary form shown in the accompanying drawings, it will be apparent to those skilled in the art that this disclosure may be changed and modified in various ways without departing from its scope.

Claims

1.A seat rail for a vehicle, comprising: a fixed rail having a rail gap elongated along a longitudinal direction of the fixed rail; a moving rail having a lower end configured to be inserted into the fixed rail through the rail gap, the moving rail being configured to move forward and backward along the rail gap; a guide bracket coupled to cover the fixed rail and having a bracket gap elongated along a longitudinal direction of the guide bracket and connected to the rail gap; a rail gap cover combined with the moving rail and fitted in the rail gap and the bracket gap, and the rail gap cover being configured to move with the moving rail; and a gap cover combined with the rail gap cover and configured to move with the moving rail and the rail gap cover, and the gap cover being supported by the guide bracket to keep the bracket gap closed while moving; wherein the rail gap cover includes a left cover and a right cover combined with each other at left and right sides to cover a lower portion of the moving rail. 2.The seat rail of claim 1, wherein the guide bracket includes a left bracket and a right bracket combined to cover outer sides of the fixed rail other than the rail gap, and the bracket gap opened upward is formed by assembly of the left bracket and the right bracket. 3.The seat rail of claim 1, wherein a plurality of bracket bosses protruding inward are formed at front and rear ends of the guide bracket, and the bracket bosses contact front and rear ends of the fixed rail located inside the guide bracket, thereby fixing a position of the fixed rail in a front and rear direction of the vehicle. 4.The seat rail of claim 1, wherein a guide groove connected in an elliptical track shape is formed in the guide bracket, and the rail gap cover and the gap cover are inserted into the guide groove and configured to move along the guide groove. 5.The seat rail of claim 1, wherein a guide groove formed in an elliptical track shape is formed in the guide bracket, and the guide groove includes: an upper groove straightly elongated along a longitudinal direction of the guide bracket and formed at an upper portion of the guide bracket where the bracket gap is formed, a lower groove formed in parallel with the upper groove below the upper groove, and a connection groove formed in an arc shape and including a front connection groove connecting a front end of the upper groove and a front end of the lower groove and a rear connection groove connecting a rear end of the upper groove and a rear end of the lower groove. 6.The seat rail of claim 5, wherein the rail gap cover is disposed in the upper groove such that the rail gap cover moves forward and backward along only the upper groove. 7.The seat rail of claim 5, wherein the gap cover is disposed to be guided into all three of the upper groove, the lower groove, and the connection groove such that the gap cover moves along the guide groove in an elliptical track shape. ​ 8.The seat rail according to claim 1, wherein flange holes are formed through left and right sides of the guide bracket, the flange holes are spaced apart from each other in a longitudinal direction of the guide bracket, and rail flanges of the fixed rail are positioned to the outside through the flange holes. 9.The seat rail according to claim 1, wherein a guide groove in an elliptical track shape is formed in the guide bracket, and a guide protrusion inserted into the guide groove and configured to move along the guide groove protrudes laterally from left and right sides of the rail gap cover. 10.The seat rail according to claim 1, wherein: a cover flange is formed at a lower end of the rail gap cover, and the cover flange is in contact with a bottom of the rail gap and limits upward movement of the rail gap cover. 11.The seat rail according to claim 1, wherein a first end of the gap cover is fixed to a coupling portion protruding from a front of the rail gap cover, a second end of the gap cover is fixed to a coupling portion protruding from a rear of the rail gap cover, whereby the rail gap cover and the gap cover are connected in an elliptical track shape. 12.The seat rail according to claim 1, wherein a wiring hole is formed at the rail gap cover to pass a wiring connected to an electronic component of a seat. 13.The seat rail according to claim 1, wherein the gap cover comprises: a plurality of upper covers consisting of a plurality of pieces including a curved portion, the plurality of upper covers being arranged in series, exposed through the bracket gap, and covering the bracket gap; a plurality of cover rubbers coupled to a rear side of the plurality of upper covers and connecting the plurality of upper covers; and a plurality of cover hinges coupled to the plurality of cover rubbers and protruding left and right, wherein both ends of the plurality of upper covers connected in series by the plurality of cover rubbers are coupled to a front end and a rear end of the rail gap cover, respectively, thereby connecting the rail gap cover and the gap cover in an elliptical track shape. 14.The seat rail according to claim 13, wherein a guide groove in an elliptical track shape is formed in the guide bracket, and left and right ends of the cover hinge are inserted into the guide groove and move along the guide groove. 15.The seat rail according to claim 13, wherein the upper cover is made of a hard injection molding material. 16.The seat rail according to claim 1, wherein the rail gap cover is configured to cover left and right gaps between the moving rail and the bracket gap, and the gap cover is configured to cover the fixed rail and the bracket gap. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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