Structure for concealing tracks exposed to the exterior of a sliding door vehicle

Abstract

The present invention relates to a structure for shielding a track exposed to the outside of a sliding door vehicle. The structure includes a track configured to be installed in a vehicle, a driving unit movably connected to the track, and a cover unit having one side connected to the driving unit and configured to be foldable and unfoldable. The cover unit is configured to move to open or close a space in which the track is placed.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2020-0085414, filed on July 10, 2020, with the Korean Intellectual Property Office, which is incorporated herein by reference. Technical Field

[0003] The present invention relates to a structure for shielding tracks exposed to the outside of a vehicle with sliding doors. Background Technology

[0004] Typically, a vehicle has a passenger compartment (of predetermined size) in which the driver or accompanying passenger can sit. The passenger compartment door is mounted on the vehicle body to open or close the passenger compartment.

[0005] The sliding passenger compartment opening / closing door includes a front sliding door and a rear sliding door. The front sliding door is installed at the front along the longitudinal direction of the vehicle, and the rear sliding door is installed at the rear along the longitudinal direction of the vehicle. The front and rear sliding doors are typically installed to move along tracks mounted on the vehicle body or door panels.

[0006] like Figure 1A As shown, referring to the structure of a vehicle equipped with a sliding door, a lower rail 20 is provided along the longitudinal direction of the vehicle body. A drive unit 30 is movably connected to the lower rail 20, and a lower arm 40 is rotatably connected to the drive unit 30 and the door 10. Therefore, when an external force is applied to the door 10, the drive unit 30 moves along the lower rail 20, thereby operating the door 10.

[0007] Meanwhile, the lower side beams 50 are installed on both sides of the lower part of the vehicle body. The lower side beams 50 define a closed cross-section and include an inner lower side beam plate, an outer lower side beam plate, reinforcing materials, etc. Figure 1B and Figure 1C As shown, when the door 10 is opened, the interior space 60 of the lower beam 50 is opened. Because of this, there is a possibility that foreign objects may enter from the outside.

[0008] To address this issue, Korean Utility Model Application Publication No. 97-21619 (Structure for Preventing Foreign Objects from Entering the Lower Side Beam of a Vehicle) discloses the following: A dust-preventing member fastened to the lower end of the vehicle door prevents foreign objects such as dust from entering the space formed in the upper part of the outer panel defining the lower side beam.

[0009] However, Korean Utility Model Application Publication No. 97-21619 discloses such a structure, which is applied to a swing-type opening / closing door in the opening / closing doors of a vehicle in the related art, but cannot be applied to vehicles equipped with sliding doors. SUMMARY

[0010] The present invention relates to a structure for shielding a rail exposed to the outside of a sliding door vehicle. A specific embodiment relates to a structure for shielding a rail, which closes an inner rocker panel space in which the rail is installed according to movement of a sliding door, thereby preventing foreign substances from entering the rocker panel.

[0011] Embodiments of the present invention provide a new structure capable of preventing foreign substances from entering an inner rocker panel space of a sliding door vehicle.

[0012] Embodiments of the present invention include a rail installed in a vehicle, a driving unit movably connected to the rail, and a cover unit having one side connected to the driving unit and configured to be foldable and unfoldable. In this case, the cover unit moves to open or close a space in which the rail is placed.

[0013] The rail is installed in an inner space of a rocker panel.

[0014] The structure can include a guide rail unit configured to guide an unfolding operation and a folding operation of the cover unit.

[0015] A guide path can be formed in the guide rail unit, and the cover unit can roll along the guide path.

[0016] A bracket that assists in the folding operation or the unfolding operation of the cover unit according to movement of the driving unit can be rotatably connected to the driving unit and the cover unit.

[0017] The cover unit can include cover parts connected at both sides by means of a coupler.

[0018] The cover parts can be rotatably connected at both sides of the coupler in a width direction.

[0019] Two connection parts can be rotatably connected to the coupler, and the cover parts can be fixedly connected to each of the connection parts.

[0020] The coupler can have a spring that exerts an elastic force when the cover parts are unfolded or folded.

[0021] The guide rail unit can include a first guide rail elongated in a direction of the rail, and a second guide rail branched from the first guide rail such that the second guide rail is disposed spaced apart from the first guide rail.

[0022] A branch groove can be formed at a branch point at which the first guide rail and the second guide rail are connected to each other.

[0023] The second guide rail can include an inclined portion branched from the first guide rail and formed to be inclined at a predetermined angle, and a parallel portion extending from the inclined portion and arranged to be parallel to the first guide rail.

[0024] The first roller can be connected to the first coupler located at one side of the cover portion such that the first roller is not inserted into the branch groove, and the second roller can be connected to the second coupler located at the other side of the cover portion such that the second roller is inserted into the branch groove.

[0025] According to the embodiment of the present application, the inner rocker panel space can be closed all the time when the door is moved, thereby preventing external foreign substances from entering the inner rocker panel space.

[0026] According to the embodiment of the present application, the structure of the cover unit includes a cover portion and a coupler, so that when some components of the cover unit are damaged, only the damaged parts can be replaced without replacing the entire cover unit, thereby simplifying the repair process. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1A is a schematic view showing a state in which a pair of sliding doors is operated. Figure 1B is a schematic view showing a state in which an inner rocker panel space is opened when a door is opened. Figure 1C is a cross-sectional view taken along the line A-A' in Figure 1B

[0028] Figure 2 is a schematic view showing a structure for shielding a rail exposed to the outside of a sliding door vehicle according to an exemplary embodiment of the present application.

[0029] Figure 3 is a schematic view showing a guide path of a guide rail unit according to an exemplary embodiment of the present application.

[0030] Figure 4 is a schematic view showing a cross-section of a coupler in a width direction according to an exemplary embodiment of the present application.

[0031] Figure 5 is a schematic view showing a cross-section of a coupler in a width direction according to another exemplary embodiment of the present application.

[0032] Figure 6A is a schematic view showing a first roller according to an exemplary embodiment of the present application. Figure 6B is a schematic view showing a second roller according to an exemplary embodiment of the present application.

[0033] Figures 7A to 7C is a schematic view showing a process in which a cover unit changes from a folded state to an unfolded state when moving along a guide rail unit.​

[0034] Figure 8 is a view showing that the structure for shielding a rail exposed to the outside of a sliding door vehicle shields a lower side beam according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0035] Hereinafter, exemplary embodiments of a structure for shielding a rail exposed to the outside of a sliding door vehicle according to the present application will be described in detail with reference to the accompanying drawings. In order to describe the present application in the best way, the terms or words used herein should not be interpreted as being limited to the general meanings or dictionary meanings, but should be interpreted in light of the concepts of the terms appropriately defined by the inventors based on the principles of the technical spirit of the present application.

[0036] Figure 2 is a view showing that the structure for shielding a rail exposed to the outside of a sliding door vehicle according to an exemplary embodiment of the present application.

[0037] Reference Figure 2 The structure for shielding a rail exposed to the outside of a sliding door vehicle according to an exemplary embodiment of the present application includes a lower rail 20, a driving unit 30, a guide rail unit having guide rails 110a, 110b, 120a, and 120b, and a cover unit 200.

[0038] In an inner space 60 of a lower side beam 50 formed in a sliding door vehicle, the lower rail 20 is installed in a longitudinal direction of a vehicle body. The driving unit 30 is movably connected to the lower rail 20. In this case, the driving unit 30 can have a roller (not shown), and the roller (not shown) can be rollably connected to the lower rail 20. One end of a lower arm 40 is rotatably connected to the driving unit 30, and the other end of the lower arm 40 is rotatably connected to a door 10. Thus, when an external force is applied to the door 10 in one direction, the driving unit 30 can move along the lower rail 20.

[0039] Also, the structures for shielding a lower side beam applied to a front door 10a and a rear door 10b are identical to each other in configuration, except that the directions of the structures for shielding a lower side beam are opposite to each other. Thus, in the present specification, a description will be focused on an arbitrary one door 10.

[0040] Figure 3 is a view showing a guide path of a guide rail unit according to an exemplary embodiment of the present application. Also, for convenience of description, Figure 3 Only the lower rail 20 and the guide rail unit including the first and second guide rails 110a, 110b, 120a, 120b are shown.

[0041] The guide rail units serve to guide movement of the covering unit 200, and include first guide rails 110a and 110b and second guide rails 120a and 120b.

[0042] The two first guide rails 110a and 110b are located at both sides of the covering unit 200 so as to face each other, and are elongated in the longitudinal direction of the lower rail 20. The first guide rails 110a and 110b each have two rails spaced apart from each other, and first guide paths 112a and 112b are formed between the two rails. The first guide rails 110a and 110b have branch grooves 114a and 114b through which the second guide rails 120a and 120b to be described below branch off from the first guide rails 110a and 110b.

[0043] The two second guide rails 120a and 120b are connected to the branch grooves 114a and 114b, and are located at both sides of the covering unit 200 so as to face each other. The second guide rails 120a and 120b include inclined portions 125a and 125b and parallel portions 126a and 126b. The inclined portions 125a and 125b are formed to be inclined at a predetermined angle from the branch grooves 114a and 114b toward the lower rail 20, respectively. The parallel portions 126a and 126b extend from the inclined portions 125a and 125b, and are formed to be parallel to the first guide rails 110a and 110b. The second guide rails 120a and 120b each have two rails spaced apart from each other, and second guide paths 122a and 122b are partially formed between the two rails.

[0044] Reference Figure 3 For convenience of description, the first guide paths 112a and 112b are represented by solid lines and are shown above the first guide rails 110a and 110b. For convenience of description, the second guide paths 122a and 122b are represented by dotted lines and are shown below the first and second guide rails 110a, 110b, 120a, 120b.

[0045] Figure 4 is a schematic view showing a cross section in a width direction of a coupler according to an exemplary embodiment of the present application.

[0046] The covering unit 200 includes a plurality of covering portions 210 and a plurality of couplers 320 so as to be folded or unfolded. The coupler 320 connects the covering portions 210 located at both sides. As Figure 4As shown, the connector 320 according to an exemplary embodiment of the present invention includes an approximately "T"-shaped body 321. However, the shape of the body 321 is not limited. A rotating pin 212 is fixedly connected to the spaces on both sides of the body 321, and a cover portion 210 is connected to the rotating pin 212. The cover portion 210 can rotate approximately 90 degrees about the rotating pin 212 within the spaces on both sides of the body 321. Figure 4 The covering unit 200 shown at the top side has an unfolded covering portion 210, while... Figure 4 The cover unit 200 shown at the bottom side has a folded cover portion 210.

[0047] Figure 5 This is a schematic diagram showing a cross-section of a connector along its width according to another exemplary embodiment of the present invention.

[0048] like Figure 5 As shown, according to another exemplary embodiment of the invention, the connector 320 has a configuration in which a first connecting portion 324a and a second connecting portion 324b are connected to each other by a central rotating pin 322. A cover portion 210 is fixedly connected to the first connecting portion 324a and the second connecting portion 324b, respectively. The first connecting portion 324a and the second connecting portion 324b can rotate approximately 90 degrees about the central rotating pin 322, and then interfere with each other. Figure 5 The covering unit 200 shown at the top side has an unfolded covering portion 210, while... Figure 5 The cover unit 200 shown at the bottom side has a folded cover portion 210.

[0049] A spring (not shown) may be provided on the rotating pin 212 or the central rotating pin 322. The spring (not shown) applies a spring force so that the cover portion 210 unfolds or folds smoothly. The direction of the spring force applied to the cover portion 210 is not limited. In an exemplary embodiment of the invention, the spring (not shown) is provided so that a spring force is applied when the cover portion 210 is unfolded, and the spring force is released when the cover portion 210 is folded.

[0050] Figure 6A This is a schematic diagram illustrating the first roller according to an exemplary embodiment of the present invention. Figure 6B It is the second roller according to an exemplary embodiment of the present invention.

[0051] Rollers including first rollers 350a and 350b and second rollers 360a and 360b are connected to both sides of the connector 320 in the longitudinal direction, and these rollers are movable along guide paths 112a, 112b, 122a, and 122b. According to an exemplary embodiment of the invention, two pairs of rollers are connected at both sides of the connector 320. However, there are no limitations on the location where the rollers are connected to the connector 320, nor on the number of rollers.

[0052] like Figure 6A As shown, the lengths of the first rollers 350a and 350b respectively prevent them from inserting into the branch grooves 114a and 114b. Therefore, the movement paths of the first rollers 350a and 350b along the first guide rails 110a and 110b are the first guide paths 112a and 112b (see...). Figure 3 ).like Figure 6B As shown, the lengths of the second rollers 360a and 360b are each shorter than those of the first rollers 350a and 350b, allowing the second rollers 360a and 360b to be inserted into the branch grooves 114a and 114b. Therefore, the movement paths of the second rollers 360a and 360b along the second guide rails 120a and 120b are the second guide paths 122a and 122b (see...). Figure 3 ).

[0053] Meanwhile, the criterion for distinguishing between the first rollers 350a and 350b and the second rollers 360a and 360b is whether the first rollers 350a and 350b and the second rollers 360a and 360b can be inserted into the branch grooves 114a and 114b. Therefore, in another exemplary embodiment of the present invention, the first rollers 350a and 350b may have a size or shape that cannot be inserted into the branch grooves 114a and 114b, while the second rollers 360a and 360b may have a size or shape that can be inserted into the branch grooves 114a and 114b.

[0054] For a cover portion 210, first rollers 350a and 350b are connected to a connector 320 located on one side of the cover portion 210, and second rollers 360a and 360b are connected to a connector 320 located on the other side of the cover portion 210. That is, the first rollers 350a and 350b and the second rollers 360a and 360b are alternately connected to the respective connectors 320. Therefore, the side of the cover portion 210 where the first rollers 350a and 350b are placed can be in one direction (based on...). Figure 4The other side of the cover portion 210, on which the second rollers 360a and 360b are placed, can move along the second guide paths 122a and 122b. In this case, when one side of the cover portion 210 moves in one direction along the second guide paths 122a and 122b, the cover unit 200 is folded, and when one side of the cover portion 210 moves in the other direction along the second guide paths 122a and 122b, the cover unit 200 is unfolded.

[0055] The foremost cover portion 210a (based on the downward direction) of the cover portions 210 closest to the lower arm 40 moves along the first guide paths 112a and 112b, and the other side of the cover portion 210, on which the second rollers 360a and 360b are placed, can move along the second guide paths 122a and 122b. In this case, when one side of the cover portion 210 moves in one direction along the second guide paths 122a and 122b, the cover unit 200 is folded, and when one side of the cover portion 210 moves in the other direction along the second guide paths 122a and 122b, the cover unit 200 is unfolded. Figures 7A to 7C The foremost cover portion 210a (based on the downward direction) of the cover portions 210 closest to the lower arm 40 moves along the first guide paths 112a and 112b, and the other side of the cover portion 210, on which the second rollers 360a and 360b are placed, can move along the second guide paths 122a and 122b. In this case, when one side of the cover portion 210 moves in one direction along the second guide paths 122a and 122b, the cover unit 200 is folded, and when one side of the cover portion 210 moves in the other direction along the second guide paths 122a and 122b, the cover unit 200 is unfolded. Figures 7A to 7C The foremost cover portion 210a (based on the downward direction) of the cover portions 210 closest to the lower arm 40 moves along the first guide paths 112a and 112b, and the other side of the cover portion 210, on which the second rollers 360a and 360b are placed, can move along the second guide paths 122a and 122b. In this case, when one side of the cover portion 210 moves in one direction along the second guide paths 122a and 122b, the cover unit 200 is folded, and when one side of the cover portion 210 moves in the other direction along the second guide paths 122a and 122b, the cover unit 200 is unfolded.

[0056] The connecting rollers 370a and 370b are provided in front of the foremost cover portion 210a so as to be able to move along the first guide paths 112a and 112b. The length or size of the connecting rollers 370a and 370b is the same as that of the first rollers 350a and 350b, so that the connecting rollers 370a and 370b cannot be inserted into the branch grooves 114a and 114b. The first brackets 410a and 410b are rotatably connected to the connecting rollers 370a and 370b and the rollers at one side of the foremost cover portion 210a. In addition, the second brackets 420a and 420b are rotatably connected to the connecting rollers 370a and 370b and the driving unit 30. Thus, when the driving unit 30 moves, the connecting rollers 370a and 370b move along the first guide paths 112a and 112b by means of the second brackets 420a and 420b, and the foremost cover portion 210a connected to the connecting rollers 370a and 370b by the first brackets 410a and 410b moves along the guide paths 112a, 112b, 122a, and 122b.

[0057] Figures 7A to 7C is a schematic view showing a process in which the cover unit changes from the folded state to the unfolded state while moving along the guide rail unit.

[0058] Hereinafter, a process for shielding a structure of a rail exposed to the outside of a sliding door vehicle according to an exemplary embodiment of the present application will be described with reference to the accompanying drawings. Figures 7A to 7C The process for operating the structure for shielding a rail exposed to the outside of a sliding door vehicle according to an exemplary embodiment of the present application will be described. Also, for convenience of description, Figures 7A to 7C Only a portion of the cover 210 and a portion of the coupler 320 are shown.

[0059] As shown in FIG. 10, when the driving unit 30 moves in one direction (the left direction based on the driving unit 30) while the cover unit 200 is in the folded state, the second rollers 360a and 360b on the foremost cover 210a move from the parallel portions 126a and 126b to the inclined portions 125a and 125b so that the foremost cover 210a is unfolded. In this case, the middle cover 210b and the rearmost cover 210c are in the folded state so that the first rollers 350a and 350b on the covers 210 are located on the first rails 110a and 110b, and the second rollers 360a and 360b are located on the parallel portions 126a and 126b. Figure 7A Figure 7A As shown in FIG. 11, when the driving unit 30 further moves in one direction from the state shown in FIG. 10, the second rollers 360a and 360b on the foremost cover 210a move along the inclined portions 125a and 125b to the branch grooves 114a and 114b so as to increase the degree of unfolding of the foremost cover 210a.

[0060] As shown in FIG. 12, when the driving unit 30 further moves in one direction from the state shown in FIG. 11, the second rollers 360a and 360b on the foremost cover 210a move out of the branch grooves 114a and 114b so that the foremost cover 210a is completely unfolded. In this case, when the driving unit 30 still moves in one direction, the foremost cover 210a moves in one direction by means of the second rollers 360a and 360b located on the first rails 110a and 110b. Figure 7B Figure 7A Thereafter, the second rollers 360a and 360b on the middle cover 210b connected to the first coupler 320a move from the parallel portions 126a and 126b to the inclined portions 125a and 125b so as to unfold the middle cover 210b. The process of unfolding the middle cover 210b is the same as that of the foremost cover 210a.

[0061] Thereafter, as shown in FIG. 14, when the rearmost cover 210c is completely unfolded, the operation of unfolding the cover unit 200 is completed.

[0062] Thereafter, as shown in FIG. 14, when the rearmost cover 210c is completely unfolded, the operation of unfolding the cover unit 200 is completed.

[0063] Thereafter, as shown in FIG. 14, when the rearmost cover 210c is completely unfolded, the operation of unfolding the cover unit 200 is completed. Figure 7C

[0064] ​​​Meanwhile, a process of operating the covering unit 200 from the unfolded state to the folded state is performed by reversely performing the above process.

[0065] Figures 7A to 7C Only a single intermediate covering portion 210b is shown, but a plurality of intermediate covering portions 210b can be provided to cover the interior space 60 of the lower sash 50.

[0066] Figure 8 is a view showing that the lower sash is covered by a structure for covering a rail exposed to the outside of a sliding door vehicle according to an exemplary embodiment of the present application.

[0067] As Figure 8 shown, the covering unit 200 is moved by the driving unit 30, so that the interior space 60 of the lower sash 50 can be covered, thereby preventing foreign substances from entering the lower sash 50 when the door 10 is opened.

[0068] The maintenance of the covering unit 200 is easy because only a failure component among the covering portion 210 and the coupler 320 constituting the covering unit 200 can be replaced.

[0069] Meanwhile, Figure 8 A configuration in which a single structure for covering a rail exposed to the outside of a sliding door vehicle is applied is shown, but the present application can also be applied to a vehicle equipped with a double-action sliding door. In this case, the covering structure applied to the double-action sliding door has the same configuration but is arranged in opposite directions.

[0070] The present application has been described with reference to limited exemplary embodiments and drawings, but the present application is not limited thereto. The described exemplary embodiments can be variously changed or modified by those skilled in the art to which the present application pertains within the technical spirit of the present application and within the scope equivalent to the appended claims.

Claims

1. A structure for shielding a track exposed to the outside of a sliding door vehicle, the structure comprising: a track configured to be installed in a vehicle; a driving unit movably connected to the track; a cover unit having one side connected to the driving unit and configured to be foldable and unfoldable, wherein the cover unit is configured to move to open or close a space in which the track is placed, and a guide rail unit configured to guide an unfolding operation and a folding operation of the cover unit, wherein the cover unit includes a plurality of cover portions and a plurality of couplers, the couplers connecting the cover portions located at both sides, the cover portions located at both sides of the couplers being rotatable about the couplers to be folded or unfolded; the guide rail unit includes a first guide rail located at both sides of the cover unit to face each other and having a branch groove, and a second guide rail branched from the first guide rail through the branch groove; a first roller is connected to the coupler located at a first side of the cover unit, and a second roller is connected to the coupler located at a second side of the cover unit, the first roller being formed not to be inserted into the branch groove and the second roller being formed to be inserted into the branch groove; when the cover unit is in a folded state, the first roller is located on the first guide rail and the second roller is located on the second guide rail, when the cover unit moves from the folded state to an unfolded state, the second roller moves out of the branch groove to move from the second guide rail onto the first guide rail, whereby the cover unit is straddled on the first guide rails facing each other.

2. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 1, wherein the track is configured to be installed in an inner space of a lower rocker.

3. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 1, wherein, a guide path is formed in the guide rail unit, the cover unit being configured to roll along the guide path.

4. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 1, further comprising a bracket rotatably connected to the driving unit and the covering unit, wherein, the bracket is configured to assist the folding operation and the unfolding operation of the cover unit according to the movement of the driving unit.

5. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 1, wherein, the cover portion is rotatably connected at both sides of the coupler in a width direction.

6. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 1, wherein two connection portions are rotatably connected to the coupler, the cover portion being fixedly connected to the connection portions.

7. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 1, wherein the coupler includes a spring configured to apply an elastic force when the cover unit is unfolded or folded. 8.A structure for shielding a track exposed to the outside of a sliding door vehicle, the structure comprising: a track configured to be installed in a vehicle; a driving unit movably connected to the track; a cover unit having one side connected to the driving unit and configured to be foldable and unfoldable, wherein the cover unit is configured to move to open or close a space in which the track is placed; and a guide rail unit configured to guide an unfolding operation and a folding operation of the cover unit, wherein the guide rail unit includes: a first guide rail elongated in a direction of the track, the first guide rail located at both sides of the cover unit to face each other and having a branch groove; and a second guide rail branched from the first guide rail through the branch groove, such that the second guide rail is arranged to be spaced apart from the first guide rail, wherein the covering unit includes a plurality of covering portions and a plurality of couplers, the couplers connecting the covering portions at both sides, the covering portions at both sides of the couplers being rotatable about the couplers to be folded or unfolded; a first roller is connected to the coupler at the first side of the covering unit, and a second roller is connected to the coupler at the second side of the covering unit, the first roller being formed not to be inserted into the branch groove and the second roller being formed to be inserted into the branch groove; when the covering unit is in the folded state, the first roller is located on the first guide rail and the second roller is located on the second guide rail, when the covering unit moves from the folded state to the unfolded state, the second roller moves out of the branch groove to move from the second guide rail onto the first guide rail, thereby the covering unit straddles the first guide rails facing each other.

9. The structure for shielding a track exposed to the outside of a sliding door vehicle according to claim 8, wherein the second guide rail includes: an inclined portion branched from the first guide rail and formed to be inclined at a predetermined angle; and a parallel portion extending from the inclined portion and arranged to be parallel to the first guide rail. 10.A vehicle, comprising: a vehicle body; a sliding door connected to the vehicle body; a rail installed in the vehicle body; a driving unit movably connected to the rail; a covering unit having one side connected to the driving unit and configured to be foldable and unfoldable, wherein the covering unit is configured to move to open or close a space in which the rail is placed, and a guide rail unit configured to guide an unfolding operation and a folding operation of the covering unit, wherein the covering unit includes a plurality of covering portions and a plurality of couplers, the couplers connecting the covering portions at both sides, the covering portions at both sides of the couplers being rotatable about the couplers to be folded or unfolded; the guide rail unit includes a first guide rail at both sides of the covering unit to face each other and having a branch groove, and a second guide rail branched from the first guide rail through the branch groove; a first roller is connected to the coupler at the first side of the covering unit, and a second roller is connected to the coupler at the second side of the covering unit, the first roller being formed not to be inserted into the branch groove and the second roller being formed to be inserted into the branch groove; when the covering unit is in the folded state, the first roller is located on the first guide rail and the second roller is located on the second guide rail, when the covering unit moves from the folded state to the unfolded state, the second roller moves out of the branch groove to move from the second guide rail onto the first guide rail, thereby the covering unit straddles the first guide rails facing each other.

11. The vehicle of claim 10, wherein, the rail is installed in an inner space of a lower rocker.

12. The vehicle of claim 10, wherein, a guide path is formed in the guide rail unit, the covering unit being configured to roll along the guide path.

13. The vehicle of claim 10, further comprising a carrier rotatably connected to the drive unit and a cover unit, wherein, the bracket is configured to assist the folding operation or the unfolding operation of the covering unit according to the movement of the driving unit. 14.The vehicle of claim 10, wherein: the covering portions are rotatably connected at both sides of the coupler in a width direction; two connection portions are rotatably connected to the coupler, and the covering unit is fixedly connected to each of the two connection portions.

15. The vehicle of claim 10, wherein: the coupler includes a spring configured to exert a spring force when the cover unit is unfolded or folded.

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