Door ramp structure and vehicle

Abstract

A door ramp structure according to an embodiment of the present application includes a ramp assembly disposed inside a sliding door configured to open or close a door opening in a vehicle body of a vehicle, in which the ramp assembly is configured to be selectively operated in conjunction with an operation of the sliding door, and in which the ramp assembly includes: a ramp panel disposed inside the sliding door; the inner surface of the sliding door is coupled and fixed to the inner surface of the sliding door or is separated from the inner surface of the sliding door; a moving device configured to be selectively coupled to or separated from a lower end of the ramp panel, and to rotate to rotate the ramp panel in a state in which the moving device is coupled to the lower end of the ramp panel; and a lead screw coupled to the moving device, and the lead screw is configured to rotate the moving device by rotation.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of Korean Patent Application No. 10-2023-0090891, filed on Jul. 13, 2023, which is incorporated herein by reference. Technical Field

[0003] The invention relates to a door ramp structure for a vehicle. Background Art

[0004] Generally, a vehicle has a passenger compartment of a predetermined size in which a driver or an accompanying passenger can sit, and a passenger compartment opening / closing door is mounted on a vehicle body to open or close the passenger compartment.

[0005] In the case of a passenger car, the passenger compartment opening and closing door includes a front door disposed at the front side in the length direction of the vehicle and a rear door disposed at the rear side in the length direction of the vehicle. The front door and the rear door are usually mounted on the vehicle body so as to be rotatable by hinges.

[0006] On the other hand, in the case of a van type vehicle that can accommodate multiple persons, the passenger compartment opening and closing door slides forward and backward in the longitudinal direction of the vehicle to open and close the passenger compartment.

[0007] In the case of a sliding passenger compartment door of a van, the passenger compartment door is configured to move rearward in the length direction of the vehicle to open the passenger compartment, and to move forward in the length direction of the vehicle to close the passenger compartment. Therefore, the sliding passenger compartment door has an advantage in that a space required for opening and closing the door is smaller than that required for opening and closing the door by a hinged type passenger compartment door applied to a passenger vehicle, and even if the space required for opening and closing the door is smaller, a door opening formed in the vehicle body can be fully opened.

[0008] The sliding door is equipped with an auxiliary entry and exit foot mat (ramp system) for disabled people. As the ramp system, an under-floor insertion type ramp system inserted into the floor of the vehicle and configured to protrude to the outside of the vehicle as needed, or an independent ramp system using an independent device accommodated in the trunk space of the vehicle is mainly used.

[0009] However, the underfloor insertion type ramp system requires excessive space at the lower end of the vehicle body, which results in disadvantages in space utilization. The independent type ramp system needs to be directly installed by the user, which causes inconvenience in storing and using the independent type ramp system. Summary of the invention

[0010] The present invention relates to a door ramp structure for a vehicle. Detailed description of the invention relates to a door ramp structure coupled to a door and configured to be selectively operated.

[0011] Embodiments of the present invention have been made in an effort to solve the problems in the prior art, and provide a door ramp structure that is detachably mounted on a sliding door of a vehicle and is configured to be selectively operated, thereby maximizing space utilization and reducing weight.

[0012] A door ramp structure for a vehicle according to one embodiment of the present invention is mounted on a sliding door configured to open or close a door opening formed in a vehicle body, and includes a ramp assembly mounted on an inner side of the door and configured to selectively operate when the door is operated. The ramp assembly includes: a ramp panel configured to operate to be coupled and fixed to or detached from an inner surface of the door; a moving device configured to selectively couple to or detach from a lower end of the ramp panel, and rotate to rotate the ramp panel when the moving device is coupled to the lower end of the ramp panel; and a lead screw coupled to the moving device and provided to rotate the moving device by rotation.

[0013] The ramp ring may be provided on the ramp panel, and the ramp ring may be coupled to or decoupled from a locking rod provided at a position corresponding to the door, so that the ramp panel is coupled to or decoupled from the door.

[0014] The ramp ring may include an opening formed in a length direction of the vehicle body, and the locking lever may include a protrusion protruding in the length direction of the vehicle body so that the protrusion is inserted into or released from the opening.

[0015] The moving device may be provided in the form of a rod extending in the length direction of the vehicle body and having a hollow portion therein.

[0016] A thread may be formed on an inner surface of the hollow portion of the moving device and coupled to a thread formed on an outer surface of the lead screw.

[0017] The coupling protrusion may be formed on an outer surface of the moving device, and when the moving device moves, the coupling protrusion is coupled to or disengaged from the lower end of the ramp panel in a convex / concave engagement manner.

[0018] The ramp panel and the moving device may be respectively provided as a pair of ramp panels and a pair of moving devices symmetrically provided at the front and rear sides of the vehicle body.

[0019] A pair of moving devices may have threads inclined in different directions along the length direction of the vehicle body.

[0020] By rotation of the lead screw, the ramp panel and the moving device can be moved toward or away from each other in the length direction of the vehicle body.

[0021] When the ends of a pair of ramp panels move toward each other as the lead screw rotates in one direction, the movement of the ramp panels can be stopped, and while the pair of ramp panels are in contact with each other, the pair of ramp panels can be rotated toward the outside of the vehicle body by continuing to rotate the lead screw in one direction.

[0022] A motor may be provided at an end of the lead screw, and the lead screw may be rotated by operation of the motor.

[0023] When the ramp ring is coupled to the locking rod, the coupling protrusion of the moving device and the ramp panel may be disengaged, and when the ramp ring is disengaged from the locking rod, the coupling protrusion of the moving device and the ramp panel may be coupled.

[0024] According to an embodiment of the present invention, a ramp structure detachably mounted on a sliding door of a vehicle is applied, which can easily secure a space at a lower end of a vehicle body and reduce cost and weight.

[0025] Furthermore, applying a ramp structure that is selectively operated to be used or not used depending on whether the occupant is a general person or a disabled person can significantly improve usability and enhance the convenience of the occupant. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 1 is a view showing a vehicle interior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is closed.

[0027] Figure 2A and Figure 2B 1 and 2 are views showing an exterior state and an interior state of a vehicle in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened.

[0028] Figure 3A and Figure 3B 1 is a view showing a vehicle exterior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened and a ramp panel is separated from the door and rotated.

[0029] Figure 4 is an exploded perspective view of a door ramp structure according to one embodiment of the present invention.

[0030] Figure 5 yes Figure 4 An enlarged view of portion “A” in FIG.

[0031] Figure 6 It is along Figure 5 A cross-sectional view taken along line “AA” in FIG.

[0032] Figure 7is a view of an interior vehicle portion showing a ramp panel of a door ramp structure according to one embodiment of the present invention.

[0033] Figure 8 yes Figure 7 An enlarged view of portion "B" in FIG.

[0034] Fig. 9 2 is a view showing a ramp assembly of a door ramp structure according to one embodiment of the present invention.

[0035] Fig.10 yes Fig. 9 An enlarged view of portion “C” in FIG.

[0036] Fig.11 It is along Fig.10 A cross-sectional view taken along line "BB" in FIG.

[0037] Fig.12 yes Fig. 9 An enlarged view of portion “D” in FIG.

[0038] Fig.13 It is along Fig.12 A cross-sectional view taken along line “CC” in FIG.

[0039] Fig.14A and Fig. 14B 1 is a view showing a state in which a door of a door ramp structure according to one embodiment of the present invention is coupled to a ramp panel.

[0040] Fig.15A and Fig. 15B is a view showing a state in which a ramp panel is separated from a moving device of a door ramp structure according to one embodiment of the present invention.

[0041] Fig.16 1 is a view showing a vehicle interior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened.

[0042] Fig.17 It is along Fig.16 A cross-sectional view taken along line “DD” in FIG.

[0043] 18A to 18C 1 is a view showing a state in which a ramp panel and a moving device are moved by operation of a lead screw of a door ramp structure according to one embodiment of the present invention.

[0044] Fig.19 1 is a view showing a vehicle exterior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened and a ramp panel is separated from the door.

[0045] Fig. 20A and Fig. 20B 1 is a view showing a state in which a ramp panel and a moving device are moved toward each other and rotated by a motor operation of the door ramp structure according to one embodiment of the present invention.

[0046] Fig.21 1 is a view showing a vehicle exterior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened and a ramp panel is separated from the door and rotated. DETAILED DESCRIPTION

[0047] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the embodiments. Embodiments of the present invention can be implemented in various ways and are not limited to the embodiments described herein.

[0048] Furthermore, constituent elements having the same configuration in several embodiments will be assigned the same reference numerals and described only in a representative embodiment, and only constituent elements different from those according to the representative embodiment will be described in other embodiments.

[0049] In addition, the drawings are schematic and are not drawn based on actual scale. For the purpose of clarity and convenience in the drawings, the relative sizes and proportional sizes of the components shown in the drawings are enlarged or reduced, and any size is illustrative and not restrictive. The same reference numerals refer to the same structures, elements or components shown in two or more drawings to show similar features. When a component is described as being positioned "above" or "on" another component, a component may be directly positioned "on" another component, and a component may also be positioned on another component with other components interposed therebetween.

[0050] The embodiments of the present invention are described in detail. As a result, various modifications of the drawings are expected. Therefore, the embodiments are not limited to the specific forms in the areas shown in the drawings, and include, for example, modifications to the forms by manufacturing processes.

[0051] Hereinafter, a door ramp structure for a vehicle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0052] Figure 1 is a view showing a vehicle interior state in which a sliding door equipped with a door ramp structure according to an embodiment of the present invention is closed, Figure 2A and Figure 2B 3A and 3B are views showing an exterior state and an interior state of a vehicle with a sliding door opened, equipped with a door ramp structure according to an embodiment of the present invention, and FIG. Figure 3B1 is a view showing a vehicle exterior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened and a ramp panel is separated from the door and rotated.

[0053] Reference Figures 1 to 3B , a door ramp structure for a vehicle according to one embodiment of the present invention is mounted on a sliding door 100 configured to open or close a door opening formed in a body 2 of the vehicle and includes a ramp assembly 200 mounted inside the door 100 .

[0054] The ramp assembly 200 may be mounted on the front and rear sliding doors 100 of the vehicle body 2, respectively, and may be selectively operated when the sliding door 100 moves forward and backward. Figure 1 As shown, when the sliding door 100 is closed, the ramp assembly 200 is fixedly coupled to the inner sides of the front and rear sliding doors 100, respectively. Figure 2A and Figure 2B As shown, when the sliding door 100 moves forward and backward, the ramp assembly 200 can be respectively and fixedly coupled to the inner sides of the front and rear sliding doors 100. Figure 3A and Figure 3B As shown, the ramp assembly 200 may be detached from the front and rear sliding doors 100 and rotated.

[0055] Reference Figure 3A and Figure 3B When the sliding door 100 moves forward and backward and opens, the ramp assembly 200 may be separated from the door 100 and move toward each other in a direction opposite to the forward and backward movement direction of the door 100. In a state where the ramp assemblies 200 are in contact with each other, the ramp assemblies 200 moving toward each other may rotate toward the outside of the vehicle. The rotating ramp assembly 200 may be used as a ramp for allowing an occupant to enter the vehicle.

[0056] Figure 4 is an exploded perspective view of a door ramp structure according to one embodiment of the present invention.

[0057] Reference Figure 4 , a door ramp structure according to one embodiment of the present invention may include a door 100 and a ramp assembly 200 installed inside the door 100. The lower end of the ramp assembly 200 may be connected to a floor member 4 defining a lateral side of a bottom portion of a vehicle body 2, and the ramp assembly may rotate around the floor member 4 in a direction perpendicular to the vehicle body.

[0058] Figure 5 yes Figure 4 An enlarged view of portion “A” in FIG.

[0059] like Figure 5As shown, the ramp assembly 200 is attached and coupled to the inner surface of the door 100. To this end, a plurality of locking rods 10 are provided on the inner surface of the door 100 and are provided on the entire inner surface of the door 100. In addition, a plurality of ramp rings 50 coupled to the locking rods 10 are provided on the inner surface of the ramp assembly 200 facing the door 100. The ramp rings 50 are provided at positions corresponding to the locking rods 10.

[0060] Figure 6 It is along Figure 5 A cross-sectional view taken along line “AA” in FIG.

[0061] like Figure 6 As shown, the locking rod 10 is installed inside the door 100 and protrudes toward the ramp assembly 200. The ramp ring 50 is installed on the surface of the ramp assembly 200 directed toward the door 100. The ramp ring 50 includes an opening formed in the length direction of the vehicle body 2. The locking rod 10 includes a protrusion protruding in the length direction of the vehicle body 2 so that the protrusion is inserted into or released from the opening.

[0062] Figure 5 1 is a view showing a rear sliding door 100 of a vehicle. Figure 6 As shown, the protrusion of the locking lever 10 protrudes toward the front side of the vehicle body 2, so that when the rear sliding door 100 moves backward, the protrusion of the locking lever 10 can be naturally retracted from the ramp ring 50. The protrusion of the locking lever 10 provided on the front sliding door 100 protrudes toward the rear side of the vehicle body, so that when the front sliding door 100 moves forward, the protrusion of the locking lever 10 can be naturally retracted from the ramp ring.

[0063] Figure 7 is a view of an interior vehicle portion showing a ramp panel of a door ramp structure according to one embodiment of the present invention, and Figure 8 yes Figure 7 An enlarged view of portion "B" in FIG.

[0064] like Figure 7 As shown, a plurality of locking bars 10 are installed inside a door 100 of a vehicle and protrude toward the inside of the vehicle. Figure 8 As shown, the protrusion of the locking lever 10 mounted on the rear sliding door 100 protrudes toward the front side of the vehicle body. The protrusion is formed in a cylindrical shape and is coupled and inserted into the opening of the ramp ring 50 of the ramp assembly 200.

[0065] Fig. 9 is a view showing a ramp assembly of a door ramp structure according to one embodiment of the present invention, Fig.10 yes Fig. 9 An enlarged view of part "C" in FIG. Fig.11 It is along Fig.10 A cross-sectional view taken along line "BB" in FIG. Fig.12yes Fig. 9 is an enlarged view of portion "D" in FIG. Fig.13 It is along Fig.12 A cross-sectional view taken along line “CC” in FIG.

[0066] refer to Fig. 9 , a ramp assembly 200 of a door ramp structure for a vehicle according to an embodiment of the present invention includes a ramp panel 40 , a moving device 70 , and a lead screw 60 .

[0067] The ramp panel 40 may be fixedly coupled to or detached from the inner surface of the door 100. The ramp panel 40 may be provided as a pair of ramp panels 40 symmetrically provided at the front and rear sides of the vehicle body 2. That is, the ramp panel 40 may be provided at positions corresponding to the front and rear sliding doors 100, respectively.

[0068] A plurality of ramp rings 50 may be provided on a surface of the ramp panel 40 facing the door 100. The ramp ring 50 is coupled to or detached from the locking rod 10 provided at a position corresponding to the door 100, so that the ramp panel 40 can be coupled to or detached from the door 100. Fig.10 and Fig.11 As shown, the ramp ring 50 may include an opening formed in the length direction of the vehicle body 2. The protrusion of the locking lever 10 may be inserted into the opening.

[0069] The moving device 70 is selectively coupled to or detached from the lower end of the ramp panel 40. When the moving device 70 rotates after the moving device 70 and the ramp panel 40 are coupled to each other, the ramp panel 40 can be rotated in a direction perpendicular to the length direction of the vehicle body 2. Fig.12 and Fig.13 As shown, the moving device 70 may be provided in the form of a rod extending in the length direction of the vehicle body 2 and having a hollow portion therein. The lead screw 60 may be inserted into the hollow portion so that the moving device 70 may rotate when the lead screw 60 rotates.

[0070] A coupling protrusion that is coupled to or separated from the lower end of the ramp panel 40 is formed on the outer surface of the moving device 70. The coupling protrusion may protrude in the length direction of the vehicle body 2, and the coupling protrusion may be inserted into an opening formed at the lower end of the ramp panel 40. The coupling protrusion may be provided as a plurality of coupling protrusions.

[0071] The moving device 70 is moved by the rotation of the lead screw 60, and the coupling protrusion is inserted into the opening of the ramp panel 40. Then, when the lead screw 60 continues to rotate, the moving device 70 can be further moved so that the ramp panel 40 can be moved in the length direction of the vehicle body 2. A pair of moving devices 70 and a pair of ramp panels 40 provided on the front door and the rear door 100 can move in opposite directions. When the ends of the moving device 70 contact each other as the moving device 70 moves toward each other, the movement of the ramp panel 40 stops. When the lead screw 60 rotates in unison in the same direction, the pair of ramp panels 40 rotate toward the outside of the vehicle body 2 in a state where the pair of ramp panels 40 contact each other, so that the pair of ramp panels 40 can be used as a ramp.

[0072] Fig.14A and Fig. 14B 1 is a view showing a state in which a door of a door ramp structure according to an embodiment of the present invention is coupled to a ramp panel.

[0073] Reference Fig.14A and Fig. 14B The locking rod 10 provided on the vehicle door 100 is coupled to the ramp ring 50 located at a corresponding position and provided on the ramp panel 40. The locking rod 10 includes a protrusion protruding in the length direction of the vehicle body 2, and the protrusion is inserted into an opening of the ramp ring 50 formed in the length direction of the vehicle body 2. Fig.14A is a view showing the rear sliding door 100. The protrusion of the locking lever 10 may protrude toward the front side of the vehicle body 2. When the rear sliding door 100 moves rearward and the ramp panel 40 is fixed to the moving device 70, the ramp ring 50 of the ramp panel 40 is released from the protrusion of the locking lever 10, so that the door 100 and the ramp panel 40 can be separated.

[0074] In a state where the ramp panel 40 is coupled to the ramp ring 50, the ramp panel 40 moves together with the door 100 in a state where the ramp panel 40 and the moving device 70 are separated, so that the ramp panel 40 does not function as a ramp. On the contrary, in a state where the ramp panel 40 is detached from the ramp ring 50, the moving device 70 is combined with the ramp panel 40, and the ramp panel 40 moves by the movement of the moving device 70. When the moving device 70 rotates by the continued rotation of the lead screw 60, the ramp panel 40 may also rotate and function as a ramp.

[0075] Fig.15A and Fig. 15B 1 is a view showing a state in which a moving device of a door ramp structure according to one embodiment of the present invention is separated from a ramp panel.

[0076] like Fig.15A and Fig. 15BAs shown, the moving device 70 is provided in the form of a rod extending in the length direction of the vehicle body 2 and having a hollow portion therein. The lead screw 60 is inserted into the moving device 70 along the length direction of the vehicle body 2. A thread is formed on the inner surface of the hollow portion of the moving device 70, and a thread is formed on the outer surface of the lead screw 60 so that these threads can be threadedly coupled to each other. Therefore, the moving device 70 can be moved in the length direction of the vehicle body by the rotation of the lead screw 60.

[0077] A coupling protrusion may be formed on an outer surface of the moving device 70 so as to be coupled to or detached from the lower end of the ramp panel 40 when the moving device 70 moves in a direction toward the vehicle body 2. The coupling protrusion may be coupled to the lower end of the ramp panel 40 in a male / female engagement manner.

[0078] In the case where the moving device 70 is separated from the ramp panel 40, the ramp panel 40 can move together with the door 100 in a state where the ramp panel 40 is coupled to the door 100. The lead screw 60 rotates in a state where the ramp panel 40 is coupled to the door 100, so that the moving device 70 is disengaged from the lower end of the ramp panel 40. In addition, when the door 100 moves toward the outside of the vehicle body 2, the lower end of the ramp panel 40 moves toward the outside of the moving device 70, that is, toward the door 100, and the ramp panel 40 and the moving device 70 are completely separated. Therefore, in this case, because the ramp panel 40 moves together with the door 100 in a state where the ramp panel 40 is attached to the door 100, the ramp panel 40 does not function as a ramp.

[0079] On the contrary, when the moving device 70 is connected to the lower end of the ramp panel 40, the ramp panel 40 can be moved by the movement of the moving device 70, and the moving device 70 can be rotated by the continued rotation of the lead screw 60, so that the ramp panel 40 can also rotate and serve as a ramp.

[0080] Fig.16 is a view showing a vehicle interior state in which a sliding door equipped with a door ramp structure according to an embodiment of the present invention is opened, and Fig.17 It is along Fig.16 A cross-sectional view taken along line “DD” in FIG.

[0081] like Fig.16 and Fig.17 As shown, a ramp panel 40 is attached to the inner side of the door 100, and the lower end of the ramp panel 40 is separated from the moving device 70. In this case, the ramp panel 40 is not used as a ramp, and in a state where the ramp panel 40 is attached and coupled to the door 100, the ramp panel 40 moves together with the door 100 by the movement of the door 100.

[0082] 18A to 18C1 is a view showing a state in which a lead screw of a door ramp structure according to one embodiment of the present invention is operated to move a ramp panel and a moving device.

[0083] Reference 18A to 18C , the lead screw 60 rotates first, and then the moving device 70 moves, so that the ramp panel 40 is used as a ramp. The ramp panel 40 and the moving device 70 can be configured as a pair of ramp panels 40 and a pair of moving devices 70 symmetrically arranged at the front and rear sides of the vehicle body 2, respectively. The pair of moving devices 70 can have threads inclined in different directions in the length direction of the vehicle body 2.

[0084] The ramp panel 40 and the moving device 70 can be moved toward each other in the length direction of the vehicle body 2 by the rotation of the lead screw 60. As the ramp panel 40 and the moving device 70 move toward each other, the coupling protrusion 72 of the moving device 70 is coupled to the lower end of the ramp panel 40, and the ends of a pair of ramp panels 40 contact each other, so that the moving device 70 does not move further.

[0085] Fig.19 is a view showing a vehicle exterior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened and a ramp panel is separated from the door, Fig. 20A and 20B is a view showing a state in which a ramp panel and a moving device are moved toward each other and rotated by a motor operation of a door ramp structure according to one embodiment of the present invention, and Fig.21 1 is a view showing a vehicle exterior state in which a sliding door equipped with a door ramp structure according to one embodiment of the present invention is opened and a ramp panel is separated from the door and rotated.

[0086] Reference Figures 19 to 21 , the ramp ring 50 of the ramp panel 40 is disengaged from the locking rod 10 of the door, and the moving device 70 and the lower end of the ramp panel 40 are coupled, so that the ramp panel 40 is used as a ramp. When the door 100 moves away from each other, as the pair of moving devices 70 and the pair of ramp panels 40 move toward each other by the rotation of the lead screw 60, the ends of the pair of ramp panels 40 contact each other. The rotation of the lead screw 60 may be performed by a motor 80 provided at the end of the lead screw 60. In a state where the pair of ramp panels 40 contact each other, the lead screw 60 continues to rotate by the operation of the motor 80, and the pair of ramp panels 40 rotate to the outside of the vehicle body 2. After the ramp panel 40 is fully rotated, the operation of the motor 80 may be stopped, and the passenger may enter the vehicle from the outside of the vehicle through the ramp panel 40.

[0087] Meanwhile, the laser radar may be installed on a side of the vehicle body 2, which is adjacent to the vehicle door 100 and allows passengers to enter the vehicle. The laser radar can detect whether the passenger is a general person or a disabled person. When it is detected that the passenger is a general person, the ramp assembly 200 of the embodiment of the present invention does not act as a ramp. That is, when the door 100 is opened in a state where the ramp ring 50 and the locking rod 10 are coupled and the moving device 70 and the ramp panel 40 are separated, the ramp panel 40 coupled to the door 100 opens together with the door 100 in a state where the ramp panel 40 is attached and coupled to the door 100. General passengers can enter the vehicle through the opened vehicle door 100.

[0088] When the laser radar detects that the passenger is a disabled person, the ramp assembly 200 of the embodiment of the present invention acts as a ramp. That is, the ramp ring 50 is separated from the locking rod 10, and the moving device 70 is coupled to the ramp panel 40. The lead screw 60 is rotated by the operation of the motor 80, and the pair of moving devices 70 and the pair of ramp panels 40 move toward each other so that the ends of the pair of moving devices 70 contact each other. At the same time, the pair of doors 100 are opened. In a state where the pair of ramp panels 40 contact each other, the pair of ramp panels 40 rotate to the outside of the vehicle body 2 by the continued rotation of the lead screw 60. After the ramp panel 40 is fully rotated to the extent that the ramp panel 40 contacts the ground outside the vehicle, the operation of the motor 80 can be stopped, and the disabled passenger can enter the vehicle by using the ramp panel 40.

[0089] As described above, according to the embodiment of the present invention, the ramp structure detachably mounted on the sliding door of the vehicle is applied, which can easily secure the space at the lower end of the vehicle body and reduce the cost and weight.

[0090] Furthermore, applying a ramp structure that is selectively operated so as to be used or not used depending on whether the occupant is a general person or a disabled person can significantly improve usability and enhance the convenience of the occupant.

[0091] Although exemplary embodiments of the present invention have been described, the embodiments of the present invention are not limited to the described embodiments. The embodiments of the present invention cover all variations that can be easily made by those skilled in the art from the described embodiments of the present invention and are considered equivalent to the embodiments of the present invention.

[0092] The following reference symbols may be used to describe various features of embodiments of the invention in conjunction with the drawings.

[0093] 2 Body

[0094] 4 Bottom plate components

[0095] 10 Locking lever

[0096] 40 Ramp Panel

[0097] 50 Ramp Ring

[0098] 60 lead screw

[0099] 70 mobile devices

[0100] 72 coupling protrusion

[0101] 80 motor

[0102] 100 doors

[0103] 200 Ramp Assembly.

Claims

1. A door ramp structure, comprising: A ramp assembly disposed inside a sliding door configured to open or close a door opening in a body of a vehicle, wherein the ramp assembly is configured to operate selectively in conjunction with operation of the sliding door, and wherein the ramp assembly comprises: a ramp panel configured to be operatively coupled and secured to or detached from an inner surface of the sliding door; a moving device configured to be selectively coupled to or detached from the lower end of the ramp panel and to rotate in a state where the moving device is coupled to the lower end of the ramp panel to turn the ramp panel; and A lead screw is coupled to the moving device, and the lead screw is configured to rotate the moving device by rotating.

2. The door ramp structure according to claim 1, further comprising: A locking rod, arranged at a position corresponding to the sliding door; as well as A ramp ring is disposed on the ramp panel, wherein the ramp ring is configured to be coupled to or decoupled from the locking rod so that the ramp panel is coupled to or decoupled from the sliding door.

3. The door ramp structure according to claim 2, wherein: The ramp ring includes an opening extending in the length direction of the vehicle body; as well as The locking lever includes a protrusion protruding in a length direction of the vehicle body, wherein the protrusion is configured to be inserted into or released from the opening in the ramp ring.

4. The door ramp structure according to claim 2, wherein: In a state where the ramp ring is coupled to the locking lever, the coupling protrusion of the moving device is separated from the ramp panel; as well as In a state in which the ramp ring is separated from the locking lever, the coupling protrusion of the moving device is coupled to the ramp panel.

5. The door ramp structure according to claim 1, wherein: The moving device includes a rod extending in a lengthwise direction of the vehicle body, the moving device having a hollow portion therein.

6. The door ramp structure according to claim 5, wherein: A thread is provided on an inner surface of the hollow portion of the moving device, and the thread is configured to be threadably engaged with a thread provided on an outer surface of the lead screw.

7. The door ramp structure according to claim 6, further comprising a coupling protrusion provided on an outer surface of the moving device, and the coupling protrusion is configured to be coupled to or detached from the lower end of the ramp panel in a convex / concave engagement manner in a state where the moving device is moved.

8. The door ramp structure of claim 1, further comprising a motor disposed at an end of the lead screw, wherein: The lead screw is configured to be rotated by operation of the motor.

9. A door ramp structure, comprising: A ramp assembly disposed inside sliding doors symmetrically disposed at the front and rear sides of a vehicle body, the sliding doors being configured to open or close a door opening in the vehicle body, wherein the ramp assembly is configured to operate selectively in conjunction with an operation of the sliding doors, and wherein the ramp assembly comprises: a pair of ramp panels configured to be operatively coupled and secured to or detached from an inner surface of the sliding door; a pair of moving devices configured to be selectively coupled to or detached from the lower end of the ramp panel and to rotate the ramp panel in a state where the moving devices are coupled to the lower end of the ramp panel; and A lead screw is coupled to the moving device, and the lead screw is configured to rotate the moving device by rotating.

10. The door ramp structure according to claim 9, wherein: The pair of moving devices include screw threads inclined in different directions in the length direction of the vehicle body.

11. The door ramp structure according to claim 10, wherein: The pair of ramp panels and the pair of moving devices are configured to move toward or away from each other, respectively, in the length direction of the vehicle body by rotation of the lead screw.

12. The door ramp structure according to claim 11, wherein: When the pair of ramp panels are moved toward each other by rotation of the lead screw in a first direction, the movement of the pair of ramp panels is stopped at a point where ends of the pair of ramp panels contact each other; and The pair of ramp panels is configured to rotate toward the outer side of the vehicle body by continued rotation of the lead screw in the first direction in a state in which the pair of ramp panels are in contact with each other.

13. A vehicle comprising: A vehicle body including a floor member defining a side portion of a bottom portion of the vehicle body, a door opening portion, and a sliding door configured to open or close the door opening portion; as well as a ramp assembly disposed inside the sliding door and having a lower end coupled to the base member, wherein the ramp assembly is configured to operate selectively in conjunction with operation of the sliding door, and wherein the ramp assembly comprises: a ramp panel configured to be operatively coupled and secured to or detached from an inner surface of the sliding door; a moving device configured to be selectively coupled to or detached from a lower end of the ramp panel and to rotate in a state where the moving device is coupled to the lower end of the ramp panel to turn the ramp panel; and A lead screw is coupled to the moving device, and the lead screw is configured to rotate the moving device by rotating.

14. The vehicle of claim 13, further comprising: A locking rod, arranged at a position corresponding to the sliding door; as well as A ramp ring is disposed on the ramp panel, wherein the ramp ring is configured to be coupled to or decoupled from the locking rod so that the ramp panel is coupled to or decoupled from the sliding door.

15. The vehicle of claim 14, wherein: The ramp ring includes an opening extending in the length direction of the vehicle body; as well as The locking lever includes a protrusion protruding in a length direction of the vehicle body, wherein the protrusion is configured to be inserted into or released from the opening in the ramp ring.

16. The vehicle of claim 14, wherein: In a state where the ramp ring is coupled to the locking lever, the coupling protrusion of the moving device is separated from the ramp panel; as well as In a state in which the ramp ring is separated from the locking lever, the coupling protrusion of the moving device is coupled to the ramp panel.

17. The vehicle of claim 13, wherein: The moving device includes a rod extending in a lengthwise direction of the vehicle body, the moving device having a hollow portion therein.

18. The vehicle of claim 17, wherein: A thread is provided on an inner surface of the hollow portion of the moving device, and the thread is configured to be threadably engaged with a thread provided on an outer surface of the lead screw.

19. The vehicle according to claim 18, further comprising a coupling protrusion provided on an outer surface of the moving device, and the coupling protrusion is configured to be coupled to or detached from the lower end of the ramp panel in a convex / concave engagement manner in a state where the moving device is moved.

20. The vehicle of claim 13, further comprising a motor disposed at an end of the lead screw, wherein: The lead screw is configured to be rotated by operation of the motor.

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