Ramp device for vehicle

Abstract

A ramp device for a vehicle includes a ramp frame inserted in a cross beam of a floor structure of a vehicle body in a vehicle width direction, in which the ramp frame is configured to project obliquely from a side end of the floor structure toward a road surface direction.

Description

[0001] Cross - reference to related applications

[0002] This application claims the benefit of Korean Patent Application No. 10 - 2023 - 0184117, filed on December 18, 2023, which is hereby incorporated by reference herein. Technical field

[0003] The present invention relates to a ramp device for a vehicle. Background art

[0004] Recently, the automotive industry is introducing a new concept for realizing a future mobility vision for a people - centered and vibrant future city. One of these future mobility solutions is a purpose - built vehicle (PBV), which is a purpose - based mode of transportation.

[0005] The PBV can be an example of an environmentally friendly mobility vehicle based on an electric vehicle (EV), and the PBV can provide various customized services for users while moving from a departure point to a destination in an unmanned autonomous driving mode.

[0006] The body of these PBVs can be configured into various shapes and sizes according to the usage of users. For example, the body of the PBV can be used as a hailing vehicle for transporting passengers or a delivery truck for transporting goods.

[0007] Meanwhile, hailing vehicles apply sliding doors on the side of the body to provide users with a spacious and convenient space for getting on and off the vehicle.

[0008] However, since these hailing vehicles construct the sliding door guide rail on the lower side member of the body, it is difficult to apply a reinforcing material to the lower side member, thus unable to ensure the side - pole collision safety of the vehicle.

[0009] In addition, hailing vehicles are applying a ramp device as a wheelchair boarding device for people with limited mobility. In one example, such a ramp device can be embedded in the floor of the vehicle. In addition, as another example, the ramp device can be stored in the trunk of the vehicle in a separate manner.

[0010] The information included in this background art section is provided to facilitate an understanding of the background of the embodiments of the present invention and may include matters unknown in the prior art. Summary of the invention

[0011] The present invention relates to a ramp device for a vehicle. The detailed description relates to a ramp device for a vehicle for people with limited mobility.

[0012] Embodiments of the present invention provide a ramp device for a vehicle, which can ensure lateral collision performance while strengthening the connection with the vehicle body and ensuring the strength of the ramp.

[0013] There is provided a ramp device for a vehicle mounted on a floor structure of a vehicle body. The ramp device according to an embodiment may include a ramp frame that is inserted into a cross beam of the floor structure in the vehicle width direction and may project obliquely from a side end of the floor structure toward a road surface.

[0014] The ramp frame may include: at least two transverse members slidably coupled to the cross beam in the vehicle width direction; and a longitudinal member connected to the transverse members in the longitudinal direction of the vehicle body to support a side end of the floor structure.

[0015] The transverse member may be provided in an inverted U-shaped cross-sectional shape with a closed top and an open bottom.

[0016] The transverse member may be slidably connected to an interior of an orbital housing connected to the cross beam in the vehicle width direction.

[0017] The orbital housing and the transverse member may be provided as a floor reinforcement unit of the floor structure.

[0018] The longitudinal member may be provided at a position corresponding to a door guide rail connected to a lower side beam of the floor structure and is provided as a side reinforcement unit of the floor structure.

[0019] The longitudinal member may include a closed cross section of a predetermined shape.

[0020] The ramp frame may further include a connection member that is mounted on an inner end of the transverse member inserted into the orbital housing and may be connected to a side end of the orbital housing.

[0021] The connection member may include: a spring fixed to at least one mounting portion formed at the inner end of the transverse member; and a ball plug elastically supported by the spring and inserted into a connection hole formed at the side end of the orbital housing.

[0022] The transverse member may be fixed to the side end of the orbital housing by the ball plug connected to the connection hole and may be rotatable relative to the ball plug toward the road surface.

[0023] The ramp device according to an embodiment may further include a ramp plate assembly that is received on the floor structure and hinged to a side end of the floor structure.

[0024] The ramp plate assembly may be folded and received between a pair of ribs formed in a floor panel of the floor structure.

[0025] The ramp plate assembly may include: a flip plate hinged to the side end of the rib by a first hinge pin; and a folding plate hinged to the flip plate by a second hinge pin and configured to fold together with or unfold from the flip plate.

[0026] A ramp device for a vehicle is provided. The vehicle body includes a chassis frame on which a battery is mounted, and a floor structure coupled to the chassis frame. The ramp device mounted on the floor structure according to an exemplary embodiment may include: a ramp frame inserted and connected between a floor panel connected to a lower side beam of the floor structure in the vehicle width direction and a cross beam connected to the floor panel; a ramp frame rotatably mounted to a side end of the floor structure in the direction of the road surface; and a ramp plate assembly foldable and storable on the floor panel, hinged to a side end of the floor panel, and configured to be deployable onto the ramp frame.

[0027] The ramp frame may include: at least two transverse members slidably connected to the inside of a track housing connected to the cross beam in the vehicle width direction; a longitudinal member connected to the transverse members in the front-rear direction of the vehicle body; and a connecting member mounted on an inner end of the transverse member inserted into the track housing and connected to a side end of the track housing.

[0028] The track housing and the transverse member may be provided as a floor strengthening unit of the floor structure.

[0029] The longitudinal member may be provided at a position corresponding to a door guide rail connected to the lower side beam and may be provided as a side strengthening unit of the floor structure.

[0030] The ramp plate assembly may include: a flip plate hinged to a side end of the floor panel; and a folding plate hinged to the flip plate and configured to fold or unfold with the flip plate.

[0031] The ramp device for a vehicle according to an embodiment of the present invention can ensure the side collision performance of the PBV, contribute to reducing the weight of the PBV, and achieve the thinning of the ramp plate and the reduction of the vehicle ride height.

[0032] In addition, the effects obtainable or expected from the embodiments of the present invention will be directly or implicitly disclosed in the detailed description of the embodiments of the present invention. That is, various effects expected according to the embodiments of the present invention will be disclosed in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Since these drawings are used for reference in describing the exemplary embodiments of the present invention, the technical idea of the embodiments of the present invention should not be construed as being limited to the drawings.

[0034] Figure 1 is an exploded perspective view showing the installation of the ramp device for a vehicle and the vehicle body according to an embodiment.

[0035] Figure 2 is a cross-sectional view showing a body mounting structure of a vehicle ramp device according to an embodiment.

[0036] Figure 3 is an exploded perspective view showing a vehicle ramp device according to an embodiment.

[0037] Figure 4 and Figure 5 is a cross-sectional view showing a mounting structure of a ramp frame applied to a vehicle ramp device according to an embodiment.

[0038] Figure 6 is an exploded perspective view showing a connecting member of a ramp frame applied to a vehicle ramp device according to an embodiment.

[0039] Figure 7 is a cross-sectional view showing a connecting member of a ramp frame applied to a vehicle ramp device according to an embodiment.

[0040] Figure 8 is an exploded perspective view showing a ramp plate assembly applied to a vehicle ramp device according to an embodiment.

[0041] Figures 9 to 11 is a cross-sectional view showing a ramp plate assembly applied to a vehicle ramp device according to an embodiment.

[0042] The following reference numerals may be combined with the drawings to illustrate various features of embodiments of the present invention.

[0043] 1: Body 2: Chassis frame

[0044] 3: Floor structure 4: Side structure

[0045] 5: Roof structure 6: Lower side beam

[0046] 7: Floor panel 8: Front door

[0047] 9: Sliding door 11: Battery

[0048] 13: Cross beam 15: Door guide rail

[0049] 17: Road surface 20: Ramp frame

[0050] 21: Lateral member 23: Longitudinal member

[0051] 25: Connecting member 27: Track housing

[0052] 27a: Enclosed section 28: Forming part

[0053] 29: Flange 31: Closed section

[0054] 33: Floor reinforcement unit 35: Side reinforcement unit

[0055] 37: Spring 39: Ball plug

[0056] 41: Mounting part 43: Connecting hole

[0057] 50: Ramp plate assembly 51: Rib

[0058] 53: Flip plate 55: Folding plate

[0059] 57: First hinge pin 59: Second hinge pin

[0060] 61: Hinge member 100: Ramp device

[0061] It should be understood that the above drawings are not necessarily drawn to scale, but rather present a somewhat simplified representation of various preferred features illustrating the basic principles of the embodiments of the present invention. For example, the specific design features of the embodiments of the present invention, including specific dimensions, orientations, positions, and shapes, will be determined in part by the particular intended use and the usage environment. Detailed embodiments

[0062] The embodiments of the present invention will be described in detail below with reference to the drawings, so that those of ordinary skill in the art to which the present invention pertains can easily implement the embodiments of the present invention. As those skilled in the art will recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0063] The terms used herein are only for describing specific exemplary embodiments and are not intended to limit the present disclosure. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise.

[0064] In addition, in the following detailed description, the names of the components are divided into first, second, etc. to distinguish them when the components are in a similar relationship, and the following description does not have to be limited to this order.

[0065] As used herein, the terms "comprising" and / or "including" indicate the presence of the specified features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or combinations thereof.

[0066] As used in this specification, the term "and / or" includes any one or all combinations of at least one of the related listed items.

[0067] In this specification, the term "connection" represents the physical relationship between two components. For example, where components are directly connected to each other by welding, self-piercing rivets (SPR), flow drill screws (FDS), structural adhesives, etc., or indirectly connected through one or more intermediate components.

[0068] As used herein, "vehicle", "vehicular", "automobile" or other similar terms as used herein generally refer to passenger cars, sports cars, sport utility vehicles (SUVs), buses, trucks and various commercial vehicles including passenger cars, hybrid vehicles, electric vehicles, hybrid electric vehicles, PBVs based on electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuels obtained from resources other than petroleum).

[0069] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0070] Figure 1 is an exploded perspective view showing the installation of a ramp device for a vehicle and a vehicle body according to an embodiment.

[0071] Referring to Figure 1 , a ramp device 100 for a vehicle according to an embodiment can be applied to, for example, the vehicle body 1 of a purpose-based mobile vehicle (special purpose vehicle: hereinafter referred to as "PBV").

[0072] The PBV can be used as a living module vehicle based on an electric vehicle, providing various services to occupants while moving from one place to a destination in an unmanned self-driving manner. The above-mentioned living module vehicle is generally referred to as a "robot taxi", "robot shuttle" or "online car-hailing service" by those of ordinary skill in the art.

[0073] The PBV can be manufactured in a single-box design with a spacious interior space. In addition, the PBV can also apply opposite-facing seats to the interior space. The vehicle body 1 of such a PBV can be manufactured in various shapes and sizes according to the type of customized service of the PBV.

[0074] In this specification, the "front-rear direction of the vehicle body" can be defined as the longitudinal direction of the vehicle body, the "vehicle width direction" can be defined as the left-right direction of the vehicle body, and the "up-down direction" can be defined as the height direction of the vehicle body.

[0075] In this specification, the "upper end", "upper part" or "upper surface" of a component represents the end, part or surface of the relatively upper component in the figure, and the "lower end", "lower part" or "lower surface" of a component represents the end, part or surface of the relatively lower component in the figure.

[0076] In addition, in this specification, the end of a component (e.g., one end or the other end, etc.) refers to the end of the component in any direction, and the end portion of a component (e.g., one end portion or the other end portion, etc.) refers to the portion of the component including the end.

[0077] The vehicle body 1 of the PBV includes a chassis frame 2, a floor structure 3, a side structure 4, and a roof structure 5.

[0078] In one example, the chassis frame 2 can be configured as a skateboard type. A person of ordinary skill in the art also refers to the chassis frame 2 as a "rolling chassis".

[0079] The floor structure 3 is connected to the chassis frame 2. The floor structure 3 includes lower side beams 6 respectively arranged on both sides in the vehicle width direction of the vehicle body 1, and a floor panel 7 connected to the lower side beams 6.

[0080] The side structure 4 is connected to both sides of the floor structure 3. The side structure 4 may include a front door 8 installed on one side in the vehicle width direction and a sliding door 9 installed on the other side in the vehicle width direction.

[0081] And, the roof structure 5 is connected to the upper part of the side structure 4.

[0082] Figure 2 is a cross-sectional view showing the body mounting structure of a vehicle ramp device according to an embodiment.

[0083] Refer to Figure 1 and Figure 2 , in the above-mentioned vehicle body 1, a battery 11 is installed on the chassis frame 2. In addition, the floor structure 3 includes a plurality of cross beams 13 connected to the lower part of the floor panel 7 along the vehicle width direction.

[0084] In the above-mentioned vehicle body 1, a door guide rail 15 that can be combined with the sliding door 9 is connected to the lower side beam 6.

[0085] The ramp device 100 according to the embodiment is configured to enable a wheelchair user with mobility difficulties to enter or leave the vehicle.

[0086] The ramp device 100 according to the embodiment can be installed in the floor structure 3 of the vehicle body 1.

[0087] The ramp device 100 according to the embodiment of the present invention provides a structure that can ensure the lateral collision performance while strengthening the connection with the vehicle body 1, ensuring the ramp strength, and reducing the vehicle step height.

[0088] Figure 3 is an exploded perspective view showing a vehicle ramp device according to an embodiment.

[0089] Refer to Figures 1 to 3, according to an embodiment, the ramp device 100 may include a ramp frame 20 and a ramp plate assembly 50.

[0090] Figure 4 and Figure 5 is a cross-sectional view showing the mounting structure of the ramp frame applied to a vehicle ramp device according to an embodiment.

[0091] Referring to Figures 1 to 5 , in an embodiment, the ramp frame 20 may be inserted into the cross beam 13 of the floor structure 3 in the vehicle width direction.

[0092] In addition, the ramp frame 20 may be inclined from the side end of the floor structure 3 toward the road surface 17.

[0093] That is, the ramp frame 20 may be inserted between the floor panel 7 and the cross beam 13 in the vehicle width direction. In addition, the ramp frame 20 may be rotatably mounted at the side end of the floor structure 3 toward the road surface 17.

[0094] The ramp frame 20 includes a plurality of transverse members 21, longitudinal members 23, and connecting members 25.

[0095] In an embodiment, at least two transverse members 21 may be provided. In the figure, two transverse members 21 are shown, but it is not limited thereto.

[0096] The transverse member 21 is slidably connected to the cross beam 13 in the vehicle width direction.

[0097] The transverse member 21 may be slidably disposed inside a track housing 27 connected to each cross beam 13 in the vehicle width direction. The track housing 27 includes a molding portion 28 and a flange 29.

[0098] In one example, the molding portion 28 may be formed in an inverted U-shaped cross-sectional shape. In addition, the flange 29 extends from each side of the molding portion 28 and is connected to the lower inner surface of the cross beam 13.

[0099] Therefore, a closed section 27a may be formed between the lower inner surface of the cross beam 13 and the molding portion 28.

[0100] The transverse member 21 may slide in the vehicle width direction along the molding portion 28 in the closed section 27a between the cross beam 13 and the molding portion 28.

[0101] The transverse member 21 may be set, for example, in an inverted U-shaped cross-sectional shape with a closed top and an open bottom.

[0102] In an embodiment, the longitudinal member 23 is connected to the transverse member 21 in the front-rear direction of the vehicle body to support the side end of the floor structure 3. The longitudinal member 23 is disposed at a position corresponding to the door guide rail 15.

[0103] The longitudinal member 23 may be configured, for example, as a tubular shape. The longitudinal member 23 includes a closed cross-section 31 of a predetermined shape.

[0104] Since the transverse member 21 is slidably connected to the track housing 27 that is connected to the cross beam 13 in the vehicle width direction as described above to form a closed section 27a, the track housing 27 and the transverse member 21 may be configured as a floor reinforcement unit 33 of the floor structure 3 (see Figure 2 and Figure 4 ).

[0105] In addition, the longitudinal member 23 is configured as a tubular shape having a closed cross-section 31 and is configured to support the side end of the floor structure 3, and thus may be configured as a side reinforcement unit 35 of the floor structure 3 (see Figure 2 ).

[0106] In an embodiment, the connecting member 25 is configured to fix the ramp frame 20 pulled out from the track housing 27 to the side end of the track housing 27.

[0107] In addition, the connecting member 25 is configured to rotate the ramp frame 20 pulled out from the track housing 27 from the side end of the track housing 27 toward the road surface 17.

[0108] The connecting member 25 is mounted at the inner end of the transverse member 21 inserted into the track housing 27 and can be connected to the side end of the track housing 27.

[0109] Figure 6 is an exploded perspective view showing a connecting member of a ramp frame applied to a vehicle ramp device according to an embodiment, and Figure 7 is a cross-sectional view showing a connecting member of a ramp frame applied to a vehicle ramp device according to an embodiment.

[0110] Referring to Figure 6 and Figure 7 , the connecting member 25 according to the embodiment may include a spring 37 and a ball plug 39.

[0111] The spring 37 is fixed to at least one mounting portion 41 formed at the inner end of the transverse member 21. In one example, the spring 37 may include a compression coil spring.

[0112] The ball plug 39 is provided in a spherical shape and is elastically supported by the spring 37 in at least one mounting portion 41.

[0113] When the transverse member 21 of the ramp frame 20 is pushed into the inside of the track housing 27 or pulled out from the inside, the ball plug 39 may move into the mounting portion 41 due to the inner surface of the track housing 27.

[0114] Moreover, when the lateral member 21 is pulled out from the inner side of the track housing 27 and the inner end of the lateral member 21 is positioned at the side end of the track housing 27, the ball plug 39 can be connected to the connection hole 43 formed at the side end of the track housing 27 by the elastic force of the spring 37.

[0115] The ball plug 39 protrudes from the mounting portion 41 by the elastic force of the spring 37 and can be inserted into the connection hole 43.

[0116] Therefore, when the ramp frame 20 is pulled out from the track housing 27, the lateral member 21 can be fixed to the side end of the track housing 27 by the ball plug 39 connected to the connection hole 43.

[0117] Moreover, in the case where the lateral member 21 is fixed to the side end of the track housing 27, the lateral member 21 can rotate relative to the ball plug 39 together with the longitudinal member 23 toward the road surface 17. Therefore, the ramp frame 20 can be arranged at the side end of the track housing 27 to be inclined toward the road surface 17.

[0118] Refer to Figures 1 to 3 , in the embodiment, the ramp plate assembly 50 extends from the side end of the track housing 27 to the ramp frame 20 arranged to be inclined toward the road surface 17, thereby forming an inclined surface on which a wheelchair can travel.

[0119] The ramp plate assembly 50 is folded and stored on the upper part of the floor structure 3, is hinged to the side end of the floor structure 3, and is arranged to be deployable onto the ramp frame 20.

[0120] The ramp plate assembly 50 can be folded and stored between a pair of ribs 51 formed on the floor panel 7 of the floor structure 3.

[0121] Figure 8 is an exploded perspective view showing a ramp plate assembly applied to a vehicle ramp device according to an embodiment.

[0122] Refer to Figure 8 , the ramp plate assembly 50 according to the embodiment includes a flipping plate 53 and a folding plate 55.

[0123] The flipping plate 53 can be arranged in the form of a thin plate, and the flipping plate 53 is hinged to the side end of the rib 51 by at least one first hinge pin 57 located at the side end of the floor panel 7.

[0124] In addition, the folding plate 55 can be arranged in the form of a thin plate. The folding plate 55 is hinged to the flipping plate 53 and is arranged to be foldable and deployable with the flipping plate 53.

[0125] The folding plate 55 is hinged to the flipping plate 53 by at least one second hinge pin 59 and can be folded or deployed from the flipping plate 53.

[0126] The flip plate 53 can be arranged on the transverse member 21 of the ramp frame 20 by rotating via at least one first hinge pin 57. In addition, the folding plate 55 can be arranged on the transverse member 21 by rotating via at least one second hinge pin 59.

[0127] In Figure 8 the figure, reference numeral 61 denotes a hinge member configured to hinge the flip plate 53 and the folding plate 55. These hinge members 61 are obvious to those skilled in the art, and thus detailed description thereof is omitted.

[0128] Figures 9 to 11 is a cross-sectional view showing a ramp plate assembly applied to a vehicle ramp device according to an embodiment.

[0129] Hereinafter, the operation of the ramp device 100 according to the embodiment configured as described above will be described in detail with reference to Figures 1 to 11 the figure.

[0130] In the embodiment, the transverse member 21 of the ramp frame 20 is inserted into the interior of the rail housing 27 connected to each cross beam 13 in the vehicle width direction.

[0131] The transverse member 21 is pushed along the forming portion 28 into the closed section 27a formed between the lower inner surface of the cross beam 13 and the forming portion 28 of the rail housing 27.

[0132] In addition, the longitudinal member 23 of the ramp frame 20 connects the transverse members 21 in the longitudinal direction of the vehicle body 1 and supports the side ends of the floor structure 3.

[0133] The longitudinal member 23 forms a closed cross-section 31 of a predetermined shape and is located at a position corresponding to the door guide 15.

[0134] In addition, in the embodiment, the flip plate 53 and the folding plate 55 of the ramp plate assembly 50 are stored between a pair of ribs 51 of the floor panel 7 in the folded state. Therefore, the ramp plate assembly 50 can be used as the floor surface of the floor panel 7.

[0135] In addition, the flip plate 53 is hinged to the side end of the rib 51 by the first hinge pin 57. In addition, the folding plate 55 is hinged to the flip plate 53 by the second hinge pin 59.

[0136] In this state, in order to allow a wheelchair for a person with limited mobility to enter and exit the vehicle, the user holds the longitudinal member 23 of the ramp frame 20 and pulls it outward in the vehicle width direction toward the side surface of the floor structure 3.

[0137] Then, the transverse member 21 is pulled out of the floor structure 3 along the rail housing 27 to the outside.

[0138] The spring 37 of the connecting member 25 is fixed to the mounting portion 41 formed at the inner end of the lateral member 21, and the ball plug 39 is elastically supported by the spring 37.

[0139] As described above, when the lateral member 21 is pulled out, the ball plug 39 is inserted into the mounting portion 41 by the inner surface of the track housing 27 and slides on the inner surface of the track housing 27.

[0140] Next, when the inner end of the above-described lateral member 21 is located at the side end of the track housing 27, the ball plug 39 is inserted into the connection hole 43 formed at the side end of the track housing 27. That is, the ball plug 39 protrudes from the mounting portion 41 by the elastic force of the spring 37 and is inserted into the connection hole 43.

[0141] Therefore, the lateral member 21 is fixed to the side end of the track housing 27 by the ball plug 39 connected to the connection hole 43.

[0142] In this state, the lateral member 21 can rotate relative to the ball plug 39 together with the longitudinal member 23 toward the road surface 17. Therefore, the ramp frame 20 can be arranged to incline toward the road surface 17 at the side end of the track housing 27.

[0143] In a state where the flap 53 of the ramp plate assembly 50 stored on the floor panel 7 overlaps the folding plate 55 (for example, in a folded state), the user can rotate it upward together with the folding plate 55 relative to the first hinge pin 57.

[0144] Then, the folding plate 55 rotates outward on the side of the floor structure 3 through the second hinge pin 59 and unfolds from the flap 53.

[0145] Therefore, the flap 53 and the folding plate 55 are placed on the lateral member 21 of the ramp frame 20, and an inclined surface is formed from the side end of the floor structure 3 toward the road surface 17 through the ramp frame 20.

[0146] Therefore, a wheelchair carrying a person with limited mobility can travel along the flap 53 and the folding plate 55 and can board and alight from the vehicle.

[0147] According to the embodiment of the ramp device 100 described so far, a closed section 27a is formed between the cross beam 13 and the track housing 27, and the lateral member 21 of the ramp frame 20 can slide along the closed section 27a.

[0148] Moreover, according to the embodiment of the ramp device 100, the longitudinal member 23 is provided in a tubular shape having a closed cross section 31 and is configured to support the side end of the floor structure 3.

[0149] Therefore, the track housing 27 and the lateral member 21 can be provided as the floor reinforcement unit 33 of the floor structure 3, and the longitudinal member 23 can be provided as the side reinforcement unit 35 of the floor structure 3.

[0150] In this way, the ramp device 100 according to the embodiment can strengthen the connectivity between the ramp frame 20 and the vehicle body 1 and ensure the strength of the floor structure 3.

[0151] Therefore, the ramp device 100 according to the embodiment can improve the side collision performance of the PBV and minimize the damage caused to the battery 11 by the side collision.

[0152] In addition, the ramp device 100 according to the embodiment can ensure the side collision performance of the PBV, thereby eliminating a separate reinforcing material mounted on the chassis frame.

[0153] Therefore, the ramp device 100 according to the embodiment can contribute to reducing the weight of the PBV.

[0154] In addition, since the ramp device 100 according to the embodiment can support the load applied to the ramp plate assembly 50 through the ramp frame 20, the ramp strength can be ensured, and the flip plate 53 and the folding plate 55 can be made thinner.

[0155] In addition, the ramp device 100 according to the embodiment can store the flip plate 53 and the folding plate 55, which are thin plates that can be folded and unfolded, on the floor panel 7, thereby enabling the ride height of the vehicle to be reduced.

[0156] Although the embodiments of the present invention have been described in conjunction with currently considered practical exemplary embodiments, it should be understood that the embodiments of the present invention are not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A ramp device for a vehicle, the ramp device comprising: A ramp frame is inserted into a cross member of a floor structure of a vehicle body in a vehicle width direction, wherein the ramp frame is configured to protrude obliquely from a side end of the floor structure toward a road surface direction.

2. The ramp device according to claim 1, wherein: The ramp frame comprises: a plurality of cross members slidably coupled to the cross member in a vehicle width direction; and A longitudinal member is connected to the cross member in the front-rear direction of the vehicle body and is configured to support a side end of the floor structure.

3. The ramp device according to claim 2, wherein: The cross member has an "inverted U" cross-sectional shape that is closed at the top and open at the bottom.

4. The ramp device according to claim 2, wherein: The cross member is slidably connected to an interior of a rail housing connected to the cross beam in a vehicle width direction.

5. The ramp device according to claim 4, wherein: The rail housing and the cross member comprise a floor reinforcement unit of the floor structure.

6. The ramp device according to claim 5, wherein: The longitudinal member is disposed at a position corresponding to a door rail connected to a rocker of the floor structure, and includes a side reinforcing unit of the floor structure.

7. The ramp device according to claim 6, wherein: The longitudinal member has a closed cross-section of a predetermined shape.

8. The ramp device according to claim 4, wherein: The ramp frame further includes a connecting member mounted on an inner end of the cross member inserted into the track housing and connectable to a side end of the track housing.

9. The ramp device according to claim 8, wherein: The connecting member comprises: a spring fixed to a mounting portion provided at an inner end of the cross member; and A ball plug is elastically supported by the spring and inserted into a connecting hole provided at a side end of the rail housing.

10. The ramp device according to claim 9, wherein: The cross member is fixed to a side end of the rail housing through a ball plug connected to the connection hole, and is rotatable in a road surface direction relative to the ball plug.

11. A ramp device for a vehicle, the ramp device comprising: a ramp frame inserted into a cross member of a floor structure of a vehicle body in a vehicle width direction, wherein the ramp frame is configured to protrude obliquely from a side end of the floor structure toward a road surface direction; and The ramp assembly is received on the floor structure and is hinged to the side ends of the floor structure.

12. The ramp device according to claim 11, wherein: The ramp assembly is folded and stored between pairs of ribs provided on the floor panel of the floor structure.

13. The ramp device according to claim 12, wherein: The ramp assembly comprises: a flip plate hinged to the side end of the rib via a first hinge pin; and The folding plate is hinged to the flip plate through a second hinge pin and is configured to be folded together with the flip plate or unfolded from the flip plate.

14. The ramp device according to claim 11, wherein: The vehicle body includes a chassis frame on which a battery can be mounted; The floor structure is coupled to the chassis frame; The ramp frame is inserted between a floor panel connected to a lower side member of the floor structure and a cross member connected to the floor panel in a vehicle width direction; The ramp frame is rotatably mounted to the side end of the floor structure in the direction of the road surface; and The ramp plate assembly can be folded and stored on the floor panel in a folded state, and can be unfolded onto the ramp frame in an unfolded state.

15. The ramp device according to claim 14, wherein: The ramp frame comprises: a plurality of cross members slidably connected to the interior of the rail housing connected to the cross beam in the vehicle width direction; a longitudinal member connected to the cross member in a front-rear direction of the vehicle body; and A connecting member is provided on an inner end of the cross member inserted into the rail housing and connected to a side end of the rail housing.

16. The ramp device according to claim 15, wherein: The track housing and the cross member are part of a floor reinforcement unit of the floor structure; and The longitudinal member is provided at a position corresponding to a door rail connected to the rocker, and is a part of a side reinforcing unit of the floor structure.

17. The ramp device according to claim 14, wherein: The ramp assembly comprises: a flip plate hinged to a side end of the floor panel; and The folding plate is hinged to the flip plate and is configured to be folded or unfolded with the flip plate.

18. A vehicle comprising: Body, including: A chassis frame that can accommodate batteries; and a floor structure coupled to the chassis frame, the floor structure comprising a rocker, a floor panel connected to the rocker, and a cross member connected to the floor panel; and A ramp device installed on the floor structure, the ramp device comprising: a ramp frame inserted between the floor panel connected to the lower side beam of the floor structure and a cross member connected to the floor panel in a vehicle width direction, wherein the ramp frame is rotatably mounted to a side end of the floor structure in a road surface direction; and A ramp plate assembly is hinged to a side end of the floor panel, wherein in a folded state, the ramp plate assembly is folded and stored on the floor panel, and in an unfolded state, the ramp plate assembly can be unfolded onto the ramp frame.

19. The vehicle of claim 18, wherein: The ramp frame comprises: a plurality of cross members slidably connected to the interior of the rail housing connected to the cross beam in the vehicle width direction; a longitudinal member connected to the cross member in a front-rear direction of the vehicle body; and a connecting member provided on an inner end of the cross member inserted into the track housing and connected to a side end of the track housing; and The ramp assembly comprises: a flip plate hinged to a side end of the floor panel; and The folding plate is hinged to the flip plate and is configured to be folded or unfolded with the flip plate.

20. The vehicle of claim 19, wherein: The track housing and the cross member are part of a floor reinforcement unit of the floor structure; and The longitudinal member is provided at a position corresponding to a door rail connected to the rocker, and is a part of a side reinforcing unit of the floor structure.

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