Vehicle with ramp device

Abstract

The present invention relates to a vehicle with a ramp device, and particularly, a vehicle with a ramp device for assisting wheelchair boarding and deboarding, and a vehicle according to an embodiment can include a floor panel coupled to a pair of side beams spaced apart from each other, a battery module coupled to the pair of side beams and disposed below the floor panel, a ramp device located on the floor panel and coupled to at least the side beams, and a plurality of seat rails disposed on the ramp device and coupled to the ramp device.

Description

Technical Field

[0001] The present invention relates to a vehicle having a ramp device for assisting wheelchairs in getting in and out of the vehicle. Background Technology

[0002] For example, buses or wheelchair-accessible vehicles for the disabled include ramp devices to assist wheelchair users in getting on and off the vehicle. The ramp device has a platform housed in the vehicle body, configured to extend from the vehicle body to the ground manually by the user or automatically by a motor, thereby tilting at a certain angle relative to the ground.

[0003] On the other hand, vehicles that use electric motors as a power source, such as hybrid electric vehicles or pure electric vehicles, use high-voltage batteries as the energy source to drive the motors, and battery modules, including multiple battery cells, are mounted on the bottom of the vehicle body. In this case, if a wheelchair ramp is mounted on the vehicle, it will interfere with the layout of the battery modules because the ramp is mainly mounted on the bottom of the vehicle, making it unusable.

[0004] To address this issue, mounting the ramp above the vehicle's floor panel would increase the step height, making it inconvenient for passengers to get in and out. Furthermore, the increased height of the ramp above the ground would make it difficult to meet regulatory standards for platform tilt (e.g., 7.1°), and would create an excessive step difference between the platform and the vehicle floor. Summary of the Invention

[0005] The purpose of this invention is to provide a vehicle that can be equipped with a ramp device without interfering with the layout of the battery module.

[0006] Another object of the present invention is to provide a vehicle that can enhance the rigidity of the vehicle body and provide support for side impacts.

[0007] Another object of the present invention is to provide a vehicle in which the tilt of the platform meets the regulatory standards without increasing the height of the steps, and in which the convenience of passengers getting on and off the vehicle is maintained and / or improved.

[0008] A vehicle based on an embodiment of the present invention may include: a floor panel coupled to a pair of side beams spaced apart from each other; a battery module coupled to the pair of side beams and disposed below the floor panel; a ramp device located on the floor panel and coupled to at least the side beams; and a plurality of seat rails disposed on and coupled to the ramp device.

[0009] The aforementioned base plate panel includes a recessed portion formed downwards, and at least one of the pair of side beams has a recessed portion formed on its upper surface in its middle portion, and the aforementioned ramp device can be placed in the aforementioned recessed portion.

[0010] The aforementioned recess may have a depth that is the same as the height of the outer casing of the aforementioned ramp device.

[0011] The aforementioned base plate panel may include a first flat surface that serves as the floor surface of the aforementioned recess and a second flat surface that serves as the upper surface other than the aforementioned recess. The upper surface of the aforementioned ramp device may be located at the same height from the ground as the aforementioned second flat surface.

[0012] The aforementioned multiple seat rails can span the aforementioned ramp device and extend along the length of the vehicle. The aforementioned seat rails can have connecting brackets on both outer sides, which are connected to the aforementioned ramp device through the connecting brackets.

[0013] The aforementioned ramp device may include: a housing; a plurality of reinforcing rails attached to the upper surface of the housing; and a plurality of connecting rails attached to the upper surface of the housing on both sides of the reinforcing rails.

[0014] The aforementioned seat rails can be arranged parallel to the aforementioned reinforcing rails on the upper surface of the aforementioned housing, and have connecting brackets on both outer sides. The aforementioned connecting brackets can be inserted into the aforementioned connecting rails and are bolted to the aforementioned housing together with the aforementioned connecting rails. The aforementioned multiple seat rails, the aforementioned multiple reinforcing rails, and the aforementioned multiple connecting rails can be arranged in a grid pattern.

[0015] The vehicle may include a pair of first crossbeams that connect the pair of side beams and are attached to the lower surface of the floor panel. The recess may be located between the pair of first crossbeams. The reinforcing rail is configured such that its ends protrude from the housing on both sides of the housing and are attached to the first crossbeams on both sides.

[0016] The side wall of the aforementioned housing may have an assembly bracket with bolt holes, and multiple partitions with bolt holes may be spaced apart from each other on the aforementioned first crossbeam. The aforementioned reinforcing rail, the aforementioned assembly bracket, and the aforementioned partitions may be bolted together to the aforementioned base plate panel.

[0017] The aforementioned housing may have an upper housing, a lower housing, and a guide rail formed from extruded material. The guide rail, the side wall of the upper housing, and the side wall of the lower housing may be bolted together to the aforementioned mounting bracket.

[0018] The vehicle may also include at least one reinforcing crossbeam located in the recess on the floor panel, with its two ends respectively attached to the side beams.

[0019] The aforementioned ramp device may include a housing and at least one channel portion formed on the lower surface of the housing to accommodate the aforementioned reinforcing beam.

[0020] An adhesive can be applied to the aforementioned channel portion, thereby connecting the aforementioned reinforcing beam to the aforementioned channel portion.

[0021] The aforementioned channel portion may include at least one insertion hole and a nut portion welded to the position corresponding to the insertion hole, with bolts passing through the battery module and the reinforcing beam fastened to the nut portion.

[0022] A vehicle based on another embodiment of the present invention may include: a battery module coupled to a pair of side beams; a ramp device located on the battery module and coupled to at least the side beams; and a plurality of seat rails disposed on and coupled to the ramp device.

[0023] The vehicle may include a pair of first crossbeams that connect the pair of side beams and are attached to the upper surface of the battery module, the ramp device being located between the pair of first crossbeams, and the reinforcing rail being configured such that its ends protrude from the housing on both sides of the housing and are attached to the first crossbeams on both sides.

[0024] The side wall of the aforementioned housing may have an assembly bracket with bolt holes, and multiple partitions with bolt holes may be spaced apart from each other on the aforementioned first crossbeam. The aforementioned reinforcing rail, the aforementioned assembly bracket, and the aforementioned partitions may be bolted together.

[0025] The vehicle may also include at least one reinforcing crossbeam disposed on the ramp device and with its two ends respectively connected to the side beams. The ramp device may include at least one channel portion formed on the lower surface of the housing to accommodate the reinforcing crossbeam.

[0026] According to embodiments of the present invention, it is possible to achieve the effect of setting up a ramp device without interfering with the layout of the battery module.

[0027] Furthermore, according to embodiments of the present invention, it has the effect of strengthening the rigidity of the vehicle body and providing support for side impacts.

[0028] Furthermore, according to embodiments of the present invention, the platform tilt angle can meet regulatory standards without increasing the step height, and the convenience of passengers getting on and off the vehicle can be maintained and / or improved. Attached Figure Description

[0029] Figure 1This is a perspective view showing the main parts of a vehicle based on a first embodiment of the present invention.

[0030] Figure 2 yes Figure 1 Side view.

[0031] Figure 3 Is Figure 1 The perspective view shown omits the ramp and seat rails.

[0032] Figure 4 It is to intercept Figure 3 The three-dimensional view and enlarged cross-sectional view shown in part A of the diagram.

[0033] Figure 5 Viewed from below Figure 1 A three-dimensional image.

[0034] Figure 6 From Figure 5 A 3D view showing the battery without its component.

[0035] Figure 7 yes Figure 6 The cross-sectional view of line B-B' in the diagram.

[0036] Figure 8 This is a diagram showing the working status of the ramp device.

[0037] Figure 9 It shows a perspective view of the ramp device and seat rails.

[0038] Figure 10 It shows Figure 1 Enlarged cross-sectional view of part C.

[0039] Figure 11 yes Figure 1 The cross-sectional view of line D-D' in the diagram.

[0040] Figure 12 Viewed from below Figure 9 A three-dimensional image.

[0041] Figure 13 The main parts of a vehicle based on a second embodiment of the present invention are shown, which are related to Figure 11 The corresponding cross-sectional view. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the exemplary accompanying drawings. It should be noted that when assigning reference numerals to components in the various drawings, the same reference numerals are used as much as possible for the same components, even if they are shown in different drawings.

[0043] In this specification, "vehicle" refers to any means of transport that moves people, animals, goods, or other objects from a point of origin to a destination. Such vehicles are not limited to those that travel on roads or tracks.

[0044] For ease of explanation, this invention will be described using a vehicle with a battery-powered motor (such as a hybrid electric vehicle or a pure electric vehicle) as an example, but the invention is not necessarily limited to this.

[0045] Furthermore, in describing the components of embodiments of the present invention, terms such as "first" and "second" are used. These terms are only used to distinguish different components and do not limit the order, size, position, or importance of the components.

[0046] In this manual, the terms related to direction, such as "up", "down", "upper part", "lower part", "left and right", "inner side", "outer side", "front", and "rear", are defined based on the vehicle or body.

[0047] Figure 1 This is a perspective view showing the main parts of a vehicle based on an embodiment of the present invention. Figure 2 yes Figure 1 Side view. Figure 3 Is Figure 1 The perspective view shown omits the ramp and seat rails. Figure 4 It is to intercept Figure 3 The three-dimensional view and enlarged cross-sectional view shown in part A of the diagram.

[0048] like Figures 1 to 4 As shown, a vehicle based on the first embodiment of the present invention can include a floor panel 10, a battery module 60, a ramp device 50, and a plurality of seat rails 70.

[0049] First, the vehicle can include a body, which can be manufactured in various shapes and sizes. The body's skeletal structure can consist of a pair of side beams 20 extending along the length direction (X) of the vehicle and forming the sides of the body, and a plurality of crossbeams 31, 32 extending along the width direction (Y) of the vehicle and connecting with the side beams.

[0050] A pair of side beams 20 can be respectively configured on the left and right sides of the bottom of the vehicle body, and the pair of side beams can be spaced apart from each other in the width direction (Y) of the vehicle. These side beams can form the shape of the side of the vehicle, and at the same time play a role in protecting the passenger space in the event of a side collision.

[0051] At least one of the pair of side beams 20 may have a recess 21 formed in its middle portion, with its upper surface lower than the surrounding area. The recess may be located below a vehicle door (not shown). The space formed by the recess may be used to accommodate the platform 52 of the ramp device 50 (see reference). Figure 8 ) Entering, exiting, and moving.

[0052] The side beam 20 may include an inner side beam plate 22, an outer side beam reinforcing member 23, and an outer side beam plate 24.

[0053] The inner side beam plate 22 can be attached to one side of the outer side beam reinforcement 23. The outer side beam reinforcement can be attached to the inner side beam plate to form a closed section. By forming a closed section, the rigidity of the side beam can be strengthened, thereby absorbing the collision load in the event of a side collision of the vehicle.

[0054] The outer plate 24 of the side beam can be attached to the other side of the outer reinforcement 23 of the side beam.

[0055] The side beam 20 can be joined together at its lower or upper end by triple welding of the inner side beam plate 22, the outer side beam reinforcement 23, and the outer side beam plate 24.

[0056] In addition, the upper or lower end of the side beam 20 is sealed by a seal (not shown) along the length direction (X) of the vehicle.

[0057] In a vehicle based on a first embodiment of the present invention, each side beam 20 may further include a reinforcing side beam 25 connected to the inner side beam plate 22, a side beam extension 26 between the inner side beam plate and the reinforcing side beam, and an inclined panel 27 surrounding the reinforcing side beam.

[0058] The reinforcing side beam 25 can be made of, for example, aluminum or aluminum alloy, through extrusion molding. The interior of the reinforcing side beam can be configured as a partition structure with multiple closed sections. The multiple closed sections can supplement the reinforcing side beam's own supporting rigidity and enable the reinforcing side beam to directly bear and resist the impact in the event of a side collision with the vehicle.

[0059] The reinforcing side beam 25 can be connected to the inner surface of the inner side beam plate 22 in the width direction (Y) of the vehicle, i.e. the opposite side surface of the outer side beam reinforcement 23, via the side beam extension 26.

[0060] This reinforced side beam 25 can enhance the rigidity of the side beam 20, which has a reduced cross-sectional size in the vertical direction (i.e., the height direction (Z) of the vehicle) due to the recess 21. In addition, the reinforced side beam supports the deformation of the inner side beam plate 22 in the width direction (Y) of the vehicle during a side collision, and can absorb the collision load while deforming together with the inner side beam plate.

[0061] The reinforced side beam 25 can not only cope with the lateral impact energy acting on the side beam 20, but also ensure rigidity against impact energy acting in the longitudinal direction (X) of the vehicle.

[0062] By constructing and configuring the reinforced side beam 25 as described above, the intrusion of the side beam 20 into the vehicle interior can be minimized in the event of a side collision, thereby giving the vehicle the advantage of maximizing the safety of the occupants.

[0063] In a vehicle based on the first embodiment of the present invention, the reinforcing side beam 25 of the side beam 20 can be connected to the floor panel 10, the reinforcing crossbeam 40 and the ramp device 50 by bolts.

[0064] As described above, in order to integrate the reinforcing side beam 25 with the base plate panel 10, the reinforcing crossbeam 40 and the ramp device 50, the reinforcing side beam can have a pipe nut 29.

[0065] A through hole 28 can be formed on the upper surface of the reinforcing side beam 25 for the insertion and welding of the tube nut 29, but it is not necessarily limited to this; the reinforcing side beam can also be integrally formed with the tube nut.

[0066] The tube nut 29 is a component used to fasten the base plate panel 10, the reinforcing crossbeam 40, and the ramp device 50 together to the reinforcing side beam 25 via bolts 9. This tube nut is located on the reinforcing side beam and can be configured to protrude from the upper surface of the reinforcing side beam. A hollow threaded hole can be formed in the tube nut along its length.

[0067] The tube nut 29 can penetrate the base plate panel 10 and reach the inner surface of the mounting part 41 provided on the reinforcing beam 40. Then, the bolt 9 inserted inside the ramp device 50 can sequentially penetrate the lower housing 51b of the ramp device, the mounting part of the reinforcing beam, and the base plate panel to be inserted and fastened to the tube nut.

[0068] At this time, a tool hole 55 is formed on the upper surface of the upper housing 51a of the outer shell 51 constituting the ramp device 50, which allows a tool to be inserted to tighten the bolt 9.

[0069] The side beam extension 26 can be formed from a sheet metal having an inverted L-shaped curved cross-section. The lower end of the side beam extension can be joined to the inner side beam plate 22 by welding, such as spot welding.

[0070] Here, since the reinforcing side beam 25 made of extruded material is made of a different material than the inner plate 22 of the side beam or the side beam extension 26, they cannot be directly connected to each other by means of spot welding or other joining methods.

[0071] Therefore, the reinforcing side beam 25 is joined to the side beam extension 26, for example, by a dissimilar joining component 8 such as a flow drill screw (FDS), thereby enabling the reinforcing side beam to be substantially connected to the inner side beam plate 22 and the side beam 20.

[0072] Furthermore, the upper end of the side beam extension 26, which is bent and horizontally formed, can be joined to the lower surface of the base plate panel 10 by welding methods such as spot welding.

[0073] The inclined panel 27 can partially surround the reinforcing side beam 25 in the width direction (Y) of the vehicle while connecting the side beam 20 and the floor panel 10.

[0074] The upper end of the inclined panel 27, which is bent horizontally, can be joined to the lower surface of the base panel 10 by welding, such as spot welding; the lower end of the inclined panel, which is bent vertically, can be joined to the outer side of the inner panel 22 of the side beam by welding, such as spot welding.

[0075] In addition, an adhesive is applied to the outer surface of the inclined surface of the reinforcing side beam 25 so that the inclined panel 27 can be joined to the reinforcing side beam.

[0076] As described above, the side beam extension 26 and the inclined panel 27 can form an additional side beam located inside the vehicle's width direction (Y) further than the side beam 20.

[0077] Therefore, the side beam 20 can be combined with the floor panel 10 and installed on the vehicle body by reinforcing the side beam 25, the side beam extension 26 and the inclined panel 27.

[0078] The floor panel 10 can be positioned between a pair of side beams 20. The floor panel can divide the passenger space where passengers sit.

[0079] Specifically, at least the left and right edges of the base plate panel 10 can be joined to the side beam extensions 26 of each side beam 20 by means of welding, for example, so that the base plate panel 10 can be joined to the side beams.

[0080] Figure 5 Viewed from below Figure 1 3D image, Figure 6 Is Figure 5 The 3D diagram shown omits the battery. Figure 7 yes Figure 6 The cross-sectional view of line B-B' in the diagram.

[0081] Reference Figures 5 to 7 In a vehicle based on the first embodiment of the present invention, the floor panel 10 may include a recessed portion 11 formed downwardly.

[0082] The base plate panel 10 with the recessed portion 11 can be made of a metal material such as steel, and can be formed by means of forming or bending, roll forming or a combination thereof using a press.

[0083] The recess 11 can have a generally U-shaped or inverted trapezoidal cross-sectional shape. With this recess, the bottom panel 10 can be formed to have a stepped difference along the length direction (X) of the vehicle.

[0084] For ease of explanation, the floor surface of the recess 11 is referred to as the first flat surface 12, and the upper surface of the base plate panel 10 excluding the recess is referred to as the second flat surface 14. Since the base plate panel has a shape with a two-stage stepped difference, it can have one first flat surface and a pair of second flat surfaces.

[0085] The recess 11 can have a depth that is the same as or deeper than the recess 21 formed on the side beam 20. In addition, the recess can have a depth that is the same as the height of the housing 51 of the ramp device 50.

[0086] Thus, the ramp device 50 can be stably installed in the recess 11, and will not be disturbed or hindered during the operation of the ramp device.

[0087] Furthermore, since the ramp device 50 is located within the recess 11, its position is lower than in the prior art, thus enabling the platform's inclination to meet regulatory standards without increasing the step height. Therefore, the vehicle based on the first embodiment of the present invention can maintain and / or improve passenger ease of boarding and alighting.

[0088] The battery module 60 can be configured in the middle of the vehicle's length direction (X) and the lower part of its height direction (Z). Therefore, a battery space S for mounting the battery module can be provided in the vehicle body.

[0089] For example, battery module 60 may include: one or more rechargeable battery cells (not shown), a battery housing 61 that houses the battery cells, and a cover 62 that covers the upper part of the battery housing. Since the structure of battery modules is well known, a detailed description of the structure of battery modules is omitted in this specification, and the battery module is described and illustrated as a single component.

[0090] A base plate panel 10 can be installed above the battery space S. In other words, the battery module 60 can be mounted to a pair of side beams 20 positioned below the base plate panel.

[0091] Specifically, for example, side flanges 63 are provided on both sides of the battery housing 61, and each side flange is connected to the lower surface of the inner plate 22 of the corresponding side beam 20 by bolts or the like, so that the battery module 60 can be installed on a pair of side beams.

[0092] like Figure 6 and Figure 7As shown, multiple crossbeams 31, 32 can be joined to the side of the side beam 20 (e.g., the inclined surface of the inclined panel 27) and the lower surface of the floor panel 10, spaced apart from each other from the front end to the rear end of the vehicle body.

[0093] The multiple crossbeams can include a pair of first crossbeams 31 and a pair of second crossbeams 32, distinguished by their engagement with or position with the ramp device 50.

[0094] The first crossbeam 31 can be arranged adjacent to the ramp device so that the ramp device 50 can be connected to it. The second crossbeam 32 can be spaced outward from the ramp device and the first crossbeam along the length direction (X) of the vehicle and arranged parallel to the first crossbeam.

[0095] Multiple crossbeams 31 and 32 can be formed by components made of a single sheet metal or by joining two or more sheet metals in their length direction, i.e., the width direction (Y) of the vehicle. The component made of a single sheet metal may have a cross-sectional shape with an open section formed by bending or rolling. However, it is not necessarily limited to this; the crossbeams may also be tubular components with internal cavities and a polygonal cross-sectional shape of quadrilaterals or more.

[0096] For example, the first crossbeam 31 can have an approximately L-shaped open section, and the second crossbeam 32 can have an approximately U-shaped open section.

[0097] Optionally, first flange surfaces can be formed at both ends of the crossbeams 31 and 32 in the length direction, i.e., at both ends in the width direction (Y) of the vehicle. Each first flange surface can be inclined to correspond to the inclined surface of the inclined panel 27 of the side beam 20. The first flange surfaces can be joined to the outer surface of the inclined surface of the inclined panel by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0098] Furthermore, a second flange surface for attaching the crossbeams 31 and 32 to the base plate panel 10 can be formed on the edges extending along the length direction. The second flange surface can be attached to the lower surface of the base plate panel by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0099] As described above, the multiple crossbeams 31 and 32, due to their curved cross-sectional shape, can enhance the rigidity of the vehicle body in the face of collision loads applied along the length of the crossbeams.

[0100] Furthermore, the reinforcing side beams 25 of the pair of side beams 20 and the pair of second crossbeams 32 connecting these reinforcing side beams can form a quadrilateral frame structure. A pair of first crossbeams 31 are arranged within the quadrilateral frame structure, thereby further strengthening the frame structure.

[0101] This quadrilateral frame structure increases the rigidity of the vehicle body and acts as a load path to transfer collision loads during a collision, thus mitigating impact and reducing vehicle body deformation.

[0102] The vehicle body also includes a plurality of inner side beams 33 extending along the length direction (X) of the vehicle between a pair of side beams 20 to connect the first crossbeam 31 and the second crossbeam 32.

[0103] The multiple inner beams 33 can be formed from a single plate having a cross-sectional shape, for example, an open section formed by bending or curling, but are not necessarily limited to this. For example, each inner beam can have a generally U-shaped open section.

[0104] For example, taking the ramp device 50 as a reference, a pair of inner beams 33 can be located on one side of the ramp device, and another pair of inner beams 33 can be located on the other side of the ramp device.

[0105] The inner beam 33 located on one side of the ramp device 50 and the inner beam 33 located on the other side of the ramp device can be aligned along the length direction (X) of the vehicle, but are not connected to each other. In other words, the ramp device 50 can be located between multiple inner beams aligned along the length direction of the vehicle.

[0106] In the event of a side collision, the collision load transmitted to the crossbeams 31 and 32 is transferred to the corresponding inner beam 33, which is mechanically connected to the crossbeams, and can be distributed along the inner beam in the vehicle's length direction (X). Therefore, the inner beam can increase the durability and rigidity of the vehicle body, thereby minimizing the deformation of the vehicle body during a side collision.

[0107] For example, when the vehicle can be distinguished by defining one side of the length direction (X) as the front and the other side of the length direction as the rear, the vehicle body can include a pair of front side beams 1 extending from the second crossbeam 32 on one side and a pair of rear side beams 2 extending from the second crossbeam on the other side.

[0108] At this time, the inner side beam 33 on one side can be aligned and connected with the front side beam 1 along the length direction (X) of the vehicle, and the inner side beam 33 on the other side can be aligned and connected with the rear side beam 2 along the length direction of the vehicle.

[0109] Optionally, a first flange surface can be formed at one end of the inner beam 33 along its length direction (i.e., the length direction (X) of the vehicle). The first flange surface can be joined to the lower surface of the first crossbeam 31 by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0110] Furthermore, a second flange surface for attaching the inner side beam to the bottom panel 10 can be formed on the edge of the inner side beam 33 extending along the length direction (i.e., the length direction (X) of the vehicle). The second flange surface can be attached to the lower surface of the bottom panel by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0111] When the vehicle body includes multiple inner side beams 33, the second crossbeam 32 among the multiple crossbeams can include a central portion 32a and a pair of segmented portions 32b spaced apart on both sides in the length direction of the central portion.

[0112] First flange surfaces can be formed at both ends of the middle section 32a along its length (i.e., the width direction (Y) of the vehicle). Each first flange surface can be joined to the lower surface of the inner beam 33 by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0113] Furthermore, a second flange surface for joining the middle portion to the base plate panel 10 can be formed on the edge extending along the length direction (i.e., the width direction (Y) of the vehicle) of the middle portion 32a. The second flange surface can be joined to the lower surface of the base plate panel by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0114] First flange surfaces can be formed at both ends of each segment 32b in the length direction (i.e., the width direction (Y) of the vehicle). The first flange surface on one side can be joined to the inclined surface of the inclined panel 27 of the side beam 20 by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide, and the first flange surface on the other side can be joined to the lower surface of the inner side beam 33 by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0115] Similarly, a second flange surface for attaching the segment to the base plate panel 10 can be formed on the edge of each segment 32b extending along the length direction (i.e., the width direction (Y) of the vehicle). The second flange surface can be attached to the lower surface of the base plate panel by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0116] The base plate panel 10 can be placed above the first crossbeam 31, the second crossbeam 32, and the inner beam 33, and can be joined to the first crossbeam, the second crossbeam, and the inner beam by welding and / or bolts. In this case, the recessed portion can be located between a pair of first crossbeams 31.

[0117] The vehicle based on the first embodiment of the present invention may also include at least one reinforcing crossbeam 40 disposed on the floor panel 10, and its two ends respectively joined to the side beams 20.

[0118] The reinforcing crossbeam can extend across the floor panel along the width direction (Y) of the vehicle on a first flat surface 12 within the recess 11 of the floor panel. In other words, the reinforcing crossbeam can be arranged parallel to the first crossbeams on the floor panel between a pair of first crossbeams 31.

[0119] The reinforcing beam 40 can be formed from a single sheet metal having a cross-sectional shape with an open section formed by bending or rolling. However, it is not necessarily limited to this; the reinforcing beam can also be a tubular component with an internal cavity and a polygonal cross-sectional shape of more than four sides.

[0120] For example, the reinforcing beam 40 can have an approximately inverted U-shaped open section.

[0121] Optionally, a flange surface for attaching the reinforcing beam 40 to the base plate panel 10 can be formed on the edge extending along the length direction (i.e., the width direction (Y) of the vehicle). Thus, the reinforcing beam can have a cap-shaped cross-section. The flange surface can be attached to the upper surface of the base plate panel by welding methods such as spot welding, laser welding, or arc welding using carbon dioxide.

[0122] Additionally, mounting portions 41 with bolt holes can be provided at both ends of the reinforcing crossbeam 40 along its length (i.e., the width direction (Y) of the vehicle). Through these mounting portions, the ramp device 50 can be attached to the reinforcing side beam 25 of the side beam 20.

[0123] For example, the assembly part 41 can be formed to have a different cross-sectional shape and / or a different material than the reinforcing beam 40. The assembly part can be formed separately and then joined to the reinforcing beam by, for example, welding, but is not necessarily limited to this.

[0124] As described above, the bolt 9 inserted inside the ramp device 50 passes through the mounting part 41 of the reinforcing crossbeam 40 and is inserted into and fastened to the tube nut 29 of the reinforcing side beam 25 provided on the side beam 20, so that the reinforcing crossbeam can be combined with the base plate panel 10 on the side beam, and the ramp device can be stably installed.

[0125] In summary, the reinforcing beam 40 is welded to the base plate panel 10 and bolted to the side beam 20. Therefore, by configuring at least one reinforcing beam 40 within the aforementioned quadrilateral frame structure, the frame structure can be further strengthened.

[0126] As described above, the reinforced quadrilateral frame structure can increase the rigidity of the vehicle body and act as a load path to transfer collision loads when the vehicle is involved in a collision, so as to cope with the collision and reduce the amount of deformation of the vehicle body.

[0127] Therefore, in a vehicle based on the first embodiment of the present invention, the ramp device 50 can be attached to the floor panel 10 via the mounting part 41 of the reinforcing crossbeam 40, and connected and fixed to the vehicle body, i.e., a pair of reinforcing side beams 25.

[0128] Furthermore, a reinforcing rib 42 extending along the length direction of the reinforcing beam 40 (i.e., the width direction (Y) of the vehicle) can be formed on the upper surface of the reinforcing beam 40. The reinforcing rib can be formed as a recessed channel or as a protruding protrusion.

[0129] The depth or height of the reinforcing rib 42, in other words, the depth of the channel or the height of the protrusion, can be changed, and the depth of the channel can become shallower or the height of the protrusion can become lower as it moves toward the end of the reinforcing beam 40.

[0130] Thus, the middle part of the reinforcing beam 40 can have an approximately M-shaped cross-section, while at its two ends, the upper surface gradually becomes flat, thus presenting a simple hat-shaped cross-section.

[0131] By having a curved cross-sectional shape as described above and having reinforcing ribs 42, the reinforcing beam 40 can enhance the body rigidity in response to collision loads applied from the length direction of the reinforcing beam (i.e., the width direction (Y) of the vehicle).

[0132] When a side collision occurs on the vehicle, the reinforcing beam 40 is able to function as a component supporting the collision load together with multiple beams 31 and 32 when the collision load applied to the side beam 20 is transferred to the reinforcing beam 40.

[0133] Therefore, strengthening the crossbeam can further improve safety in side collisions, thereby minimizing the deformation of the vehicle body, ramp device 50 and battery module 60 in the event of a side collision, and thus protecting the ramp device and battery module.

[0134] Figure 8 This is a diagram showing the working status of the ramp device. Figure 9 It shows a perspective view of the ramp device and seat rails. Figure 10 It shows Figure 1 Enlarged cross-sectional view of part C. Figure 11 yes Figure 1 The cross-sectional view of line D-D' in the diagram. Figure 12 Viewed from below Figure 9 A three-dimensional image.

[0135] Reference Figures 8 to 12 The ramp device 50 may include a housing 51, a platform 52 movable between a storage position inside the housing and an unfolded position outside the housing, and a drive unit 53 disposed in the housing and applying driving force to the platform. The drive unit may include a motor and a reducer, etc.

[0136] Additionally, the ramp device 50 may also include a power transmission mechanism (not shown) located between the drive unit 53 and the platform 52 to transmit the driving force of the drive unit to the platform. As a power transmission mechanism, for example, a mechanism with a pair of sprockets and a chain, or a mechanism with gears and a screw, can be used, but it is not necessarily limited to these.

[0137] The ramp device 50 configured as described above can be installed in the recess 11 of the base plate panel 10 and fixedly attached to the base plate panel. When the driving force of the drive unit 53 is transmitted to the platform 52 through the power transmission mechanism, the platform is pulled out from the housing 51 and one end contacts the ground, thus placing it in the unfolded position. Subsequently, when the drive unit operates in the reverse direction, the platform can retract into the housing and be placed in the storage position.

[0138] For ease of explanation, a more detailed description of the structure and operation of the ramp device 50 will be omitted in this manual. Instead, the main focus will be on the connection between the ramp device and the vehicle body.

[0139] The outer casing 51 can accommodate components of the ramp device, such as the platform 52 and the drive unit 53. For this purpose, the outer casing can have an upper casing 51a and a lower casing 51b.

[0140] The housing 51 may include: a plurality of reinforcing rails 57 which are coupled to the upper surface of the upper housing 51a; and a plurality of connecting rails 58 which are coupled to the upper surface of the upper housing on both sides of each reinforcing rail.

[0141] While the reinforcing rail 57 can be formed from a single sheet metal having a cross-sectional shape with an opening formed by bending or rolling, it is not necessarily limited to this. Additionally, the reinforcing rail can have a generally inverted hat-shaped opening cross-section.

[0142] Furthermore, the reinforcing rail 57 can have a length longer than the width direction (i.e., the length direction (X) of the vehicle) of the housing 51. Thus, the reinforcing rail can extend across the housing, and the ends of the reinforcing rail can protrude from the housing into the length direction of the vehicle on both sides of the housing.

[0143] This reinforcing rail 57 can be attached to the upper surface of the upper housing 51a by welding methods such as spot welding.

[0144] The connecting rail 58 can be formed from a single sheet metal having a cross-sectional shape with an opening formed by bending or rolling, but is not necessarily limited to this. For example, the connecting rail can have a generally U-shaped opening cross-section.

[0145] Multiple connecting rails 58 can be arranged symmetrically on both sides of the reinforcing rail 57, with each reinforcing rail as a reference. Furthermore, a connecting rail corresponding to one reinforcing rail can be spaced apart from a connecting rail corresponding to another reinforcing rail by a predetermined interval. Seat guide rails 70 can then be arranged in the space between these connecting rails.

[0146] To determine the engagement position, the connecting rail 58 can first be bolted to the upper surface of the upper housing 51a, and then joined to the upper surface of the upper housing by welding methods such as spot welding.

[0147] The plurality of reinforcing rails 57 can include at least one pair, in other words, at least two reinforcing rails. Although an example of using three reinforcing rails is shown in the accompanying drawings, the number of reinforcing rails is not necessarily limited to this. The ends of each reinforcing rail along its length direction (i.e., the length direction (X) of the vehicle) can be bolted to the first crossbeam 31.

[0148] Therefore, mounting brackets 59 with inverted L-shaped curved cross-sections and bolt holes can be welded to the two side walls of the upper housing 51a. In addition, bolt holes can be formed at both ends of the reinforcing rail 57 in the longitudinal direction (i.e., the longitudinal direction (X) of the vehicle).

[0149] Furthermore, the first crossbeam 31 can have multiple bulkheads 39 spaced apart from each other to strengthen the connection of the rails 57. Each bulkhead can have bolt holes. At least two bulkheads can be provided on the first crossbeam 31 at positions corresponding to the inner beam 33.

[0150] like Figure 10 and Figure 11 As shown, the bolt 9 inserted from the inner surface of the reinforcing rail 57 can pass through the reinforcing rail, the mounting bracket 59, the base plate panel 10, and the partition 39 of the first crossbeam 31 and be fastened to the nut 7.

[0151] For example, as described above, in the case where the vehicle body includes a pair of front side beams 1 and a pair of rear side beams 2, at least two reinforcing rails 57 are respectively connected to the inner side beams 33 on both sides that are arranged in a straight line along the length direction (X) of the vehicle and spaced apart from each other, thereby aligning with the front and rear side beams between a pair of first crossbeams 31 and being able to connect the front and rear side beams.

[0152] Thus, multiple reinforcing rails 57 connect the load paths between the front side beam 1 and the rear side beam 2, which are disconnected due to the recess 11 of the floor panel 10 and the ramp device 50, thereby dispersing and transmitting the collision load and reducing the amount of deformation of the vehicle body when a collision occurs.

[0153] Therefore, in a vehicle based on the first embodiment of the present invention, the ramp device 50 can be coupled to the floor panel 10 by means of the reinforcing rail 57 and the mounting bracket 59 fixed to the upper housing 51a of the housing 51, and can be connected and fixed to the vehicle body, that is, connected and fixed to a pair of first crossbeams 31 and a plurality of inner side beams 33.

[0154] Additionally, the ramp device 50 can be equipped with guide rails 51c for moving the platform 52 inside the housing 51. The guide rails can be made of aluminum or aluminum alloy by extrusion molding.

[0155] The guide rail 51c can be bolted to the side wall of the upper housing 51a and the side wall of the lower housing 51b of the outer shell 51 constituting the ramp device 50 and attached to the mounting bracket 59.

[0156] This guide rail 51c can enhance the rigidity of the ramp device 50 and, when a vehicle collision occurs, support the outer shell 51 to deform in the vehicle length direction (X), while deforming together with the outer shell to absorb the collision load.

[0157] Above the housing 51 of the ramp device 50, in other words, on the upper surface of the upper housing 51a, in addition to a plurality of reinforcing rails 57, a plurality of seat rails 70 for mounting vehicle seats may be provided, which are arranged across the housing of the ramp device and extend along the length direction (X) of the vehicle.

[0158] While the seat rail 70 can be formed from a single sheet metal having a cross-sectional shape with an opening formed by bending or rolling, it is not necessarily limited to this. The seat rail can have a generally U-shaped opening cross-section.

[0159] In addition, the seat rail 70 can have a length longer than the width direction (i.e., the length direction (X) of the vehicle) of the housing 51, and can have a length longer than the length of the reinforcing rail.

[0160] Thus, the seat rail 70 can extend across the ramp device 50, a pair of first crossbeams 31, a pair of second crossbeams 32, and the base plate panel 10.

[0161] This seat rail 70 can be bolted to the upper surface of the upper housing 51a. For this purpose, connecting brackets 71 with L-shaped curved cross-sections and bolt holes are welded to the outer sides of both sides of the seat rail by means of welding such as spot welding.

[0162] When the ramp device 50 is placed in the recess 11 of the base plate panel 10, the upper surface of the upper housing 51a and the second flat surface 14 of the base plate panel 10 can be located on the same plane at the same height from the ground.

[0163] Next, multiple seat rails 70 can be respectively located on the upper surface of the upper housing 51a in the space between the multiple connecting rails 58, or can be arranged parallel to the reinforcing rail 57 with the connecting rails in between. Each seat rail can be bolted to the upper surface of the upper housing via a connecting bracket 71.

[0164] At this time, the connecting bracket 71 can be inserted into the connecting rail 58, so that it can be bolted together with the connecting rail to the upper surface of the upper housing 51a.

[0165] Multiple seat rails 70, together with multiple reinforcing rails 57 and multiple connecting rails 58, are arranged in a grid pattern on the upper surface of the upper housing 51a of the housing 51 constituting the ramp device 50. This allows the ramp device to be securely fixed to the base plate panel 10 and compensates for the durability and rigidity of the vehicle body, which is disadvantaged due to the downward arrangement of the ramp device. This enables the collision load to be distributed and the deformation of the vehicle body to be minimized in the event of a side collision.

[0166] Furthermore, the housing 51 may include at least one channel portion 56 formed on the lower surface of the lower housing 51b to accommodate the reinforcing beam 40.

[0167] The lower housing 51b having the channel section 56 can be made of a metal material such as steel, and can be formed by means of forming or bending, roll forming or a combination thereof using a press.

[0168] The channel portion 56 can have a generally inverted U-shaped cross-sectional shape. This channel portion can protrude from the lower housing 51b into the interior of the outer housing 51.

[0169] The channel portion 56 can have a depth at least the same as the height of the reinforcing beam 40. In addition, an adhesive is applied to the horizontal outer surface of the channel portion 56, so that the reinforcing beam 40 can be joined to the channel portion.

[0170] Here, in the horizontal flat surface of the channel portion protruding into the interior of the housing 51, the surface exposed to the outside of the housing is called the outer surface of the channel portion, and the surface located inside the housing is called the inner surface of the channel portion.

[0171] Within the channel portion of the lower housing 51b of the outer casing 51 constituting the ramp device 50, a reinforcing crossbeam 40 disposed on the first flat surface 12 of the base plate panel 10 is accommodated, so that the ramp device can not only be stably placed in the recess 11, but also the outer surface of the channel portion 56 engages with the reinforcing crossbeam 40, thereby preventing the ramp device from moving along the length direction (X) of the vehicle.

[0172] Optionally, the channel portion 56 may include at least one insertion hole 56a and a nut portion 56b welded to the upper surface of the channel portion at a position corresponding to the insertion hole. Bolts 9 passing through the battery module 60 and the reinforcing beam 40 can be inserted and tightened in this insertion hole and the welded nut portion.

[0173] Thus, in the event of a side collision with the vehicle, the collision load transmitted to the battery module 60 can be transmitted to multiple reinforcing rails 57 mechanically coupled to the ramp device and dispersed in the length direction (X) or width direction (Y) of the vehicle.

[0174] Figure 13 The main parts of a vehicle based on a second embodiment of the present invention are shown, which are related to Figure 11 The corresponding cross-sectional view.

[0175] like Figure 13 As shown, a vehicle based on the second embodiment of the present invention can include a battery module 60, a ramp device 50, and a plurality of seat rails 70.

[0176] Figure 13 The second embodiment of the present invention shown differs only in that the bottom panel 10 is omitted; the remaining components are the same. Figures 1 to 12 The components shown in the first embodiment are the same. Therefore, when describing the vehicle based on the second embodiment of the present invention, the same reference numerals are used for the same components as those in the vehicle of the first embodiment, and detailed descriptions of their structure and function are omitted.

[0177] Reference Figure 13 According to the second embodiment of the present invention, a vehicle can include a battery module 60 disposed in the middle of the vehicle's length direction (X) and lower in the height direction (Z). A battery space (S) for mounting the battery module can be provided in the vehicle body.

[0178] For example, in vehicles that use an electric motor as a power source, such as hybrid electric vehicles or pure electric vehicles, the battery module 60 includes a large number of battery cells, which increases the size of the vehicle because it needs to supply a large amount of electricity to the motor for a long time.

[0179] In addition, the cover 62 covering the upper part of the battery housing 61 that houses the battery cells is flat and has a fairly large area, so it can replace the bottom panel 10.

[0180] Therefore, in a vehicle based on the second embodiment of the present invention, the floor panel 10 can be omitted, and multiple components can be disposed on the cover 62 of the battery module 60.

[0181] The battery module 60 can be mounted on a pair of side beams 20. Specifically, for example, side flanges 63 are provided on both sides of the battery housing 61, and each side flange is connected to the lower surface of the inner plate 22 of the corresponding side beam 20 by bolts or the like, so that the battery module 60 can be mounted on a pair of side beams.

[0182] Therefore, the cover 62 of the battery module 60 can be set to be lower than the upper surface of the recess 21 of the side beam 20.

[0183] Multiple crossbeams, namely a pair of first crossbeams 31 and a pair of second crossbeams 32, can be joined to the side of the side beam 20 (e.g., the inclined surface of the inclined panel 27) and the upper surface of the cover 62 of the battery module 60, spaced apart from each other from the front end to the rear end of the vehicle body.

[0184] The crossbeams 31 and 32 can be welded to the upper surface of the cover 62, but are not necessarily limited to this.

[0185] Additionally, a plurality of inner beams 33 extending in the length direction (X) of the vehicle and connecting the first crossbeam 31 to the second crossbeam 32 can be welded to the upper surface of the cover 62, but are not necessarily limited to this.

[0186] At least one reinforcing crossbeam 40 can be disposed on the cover 62 of the battery module 60, and its two ends can be respectively coupled to the side beams 20. The reinforcing crossbeam can be disposed on the cover parallel to the first crossbeams between a pair of first crossbeams 31.

[0187] The reinforcing crossbeam can be welded to the upper surface of the cover 62, but is not necessarily limited to this. Additionally, mounting portions 41 with bolt holes can be provided at both ends of the reinforcing crossbeam 40 along its length (i.e., the width direction (Y) of the vehicle). Through these mounting portions, the ramp device 50 can be attached to the reinforcing side beams 25 of the side beams 20.

[0188] As described above, the bolt 9 inserted inside the ramp device 50 passes through the mounting part 41 of the reinforcing crossbeam 40 and is inserted into and fastened to the tube nut 29 of the reinforcing side beam 25 provided on the side beam 20, thereby strengthening the connection between the crossbeam and the side beam and enabling the stable installation of the ramp device.

[0189] Furthermore, a reinforcing rib 42 extending along the length direction of the reinforcing beam 40 (i.e., the width direction (Y) of the vehicle) can be formed on the upper surface of the reinforcing beam 40. The reinforcing rib can be formed as a recessed channel or as a protruding protrusion.

[0190] Thus, the middle part of the reinforcing beam 40 can have an approximately M-shaped cross-section, while at its two ends, the upper surface gradually becomes flat and can present a simple hat-shaped cross-section.

[0191] The ramp device 50 is located on the cover 62 of the battery module 60 and can be connected and fixed to the vehicle body, i.e., a pair of reinforcing side beams 25, via the mounting part 41 of the reinforcing crossbeam 40.

[0192] Furthermore, the ramp device 50 can be connected and fixed to the vehicle body, namely a pair of first crossbeams 31 and multiple inner side beams 33, via the reinforcing rails 57 and mounting brackets 59 fixed to the upper housing 51a of the outer casing 51.

[0193] Bolts 9 inserted from the inner surface of reinforcing rail 57 can pass through reinforcing rail, mounting bracket 59 and partition 39 of first crossbeam 31 and be fastened to nuts.

[0194] Additionally, the ramp device 50 can be equipped with guide rails 51c for moving the platform 52 inside the housing 51. The guide rails are formed of extruded material and are bolted together with the side walls of the upper housing 51a and the lower housing 51b of the housing 51 constituting the ramp device 50 to the mounting bracket 59.

[0195] Above the housing 51 of the ramp device 50, in other words, on the upper surface of the upper housing 51a, in addition to the plurality of reinforcing rails 57, a plurality of seat rails 70 for mounting vehicle seats may also be provided (see reference). Figure 1 ), which spans the housing of the ramp device and extends along the length direction (X) of the vehicle.

[0196] The seat rail 70 can extend across the ramp device 50, a pair of first crossbeams 31 and a pair of second crossbeams 32.

[0197] This seat rail 70 can be bolted to the upper surface of the upper housing 51a of the outer casing 51 that constitutes the ramp device 50.

[0198] Furthermore, the housing 51 may include at least one channel portion 56 formed on the lower surface of the lower housing 51b to accommodate the reinforcing beam 40.

[0199] Within the channel portion of the lower housing 51b of the outer casing 51 constituting the ramp device 50, a reinforcing crossbeam 40 disposed on the cover 62 of the battery module 60 is accommodated and engaged, thereby not only enabling the ramp device to be securely mounted on the cover, but also preventing the ramp device from moving along the length direction (X) of the vehicle.

[0200] Optionally, the channel portion 56 may include at least one insertion hole 56a and a nut portion 56b welded to the upper surface of the channel portion at a position corresponding to the insertion hole. A bolt 9 passing through the battery module 60 can be inserted into and tightened into the insertion hole and the welded nut portion.

[0201] As described above, according to embodiments of the present invention, it is possible to achieve the effect of setting up a ramp device without interfering with the layout of the battery module.

[0202] Furthermore, according to embodiments of the present invention, it has the effect of strengthening the rigidity of the vehicle body and providing support for side impacts.

[0203] Furthermore, according to embodiments of the present invention, the platform tilt angle can meet regulatory standards without increasing the step height, and the platform tilt angle can maintain and / or improve passenger boarding and alighting convenience.

[0204] The above description is merely an exemplary description of the technical concept of the present invention. Those skilled in the art can make various modifications and variations without departing from the essential characteristics of the present invention.

[0205] For example, the embodiments described above and illustrated in this invention can be combined with each other, and each embodiment can selectively adopt or replace some components of other embodiments as needed.

[0206] Therefore, the embodiments disclosed in this invention are intended to illustrate technical ideas, not to limit them, and any interpretation based on these embodiments should not constitute a limitation on the scope of the technical ideas of this invention. The scope of protection of this invention should be interpreted according to the claims, and all technical ideas within their equivalents should be interpreted as being included within the scope of the claims of this invention.

Claims

1. A vehicle comprising: The base plate panel is joined to a pair of spaced-apart side beams; The battery module is integrated with the pair of side beams and is disposed below the bottom panel. A ramp device, which is located on the base plate panel and is at least connected to the side beam; as well as Multiple seat rails are configured on and connected to the ramp device.

2. The vehicle according to claim 1, wherein, The bottom panel includes a recessed portion formed by a downward indentation. At least one of the pair of side beams has a recessed portion formed on its upper surface in its middle section. The ramp device is placed inside the recess.

3. The vehicle according to claim 2, wherein, The recess has a depth that is the same as the height of the outer casing of the ramp device.

4. The vehicle according to claim 2, wherein, The base plate panel includes a first flat surface that serves as the floor surface of the recessed portion and a second flat surface that serves as the upper surface outside the recessed portion. The upper surface of the ramp device is at the same height as the second flat surface from the ground.

5. The vehicle according to claim 2, wherein, The plurality of seat rails span the ramp assembly and extend along the length of the vehicle. The seat rail has connecting brackets on both outer sides, which are connected to the ramp device.

6. The vehicle according to claim 2, wherein, The ramp device includes: shell; Multiple reinforcing rails are attached to the upper surface of the housing; and Multiple connecting rails are attached to the upper surface of the housing on both sides of the reinforcing rail.

7. The vehicle according to claim 6, wherein, The seat rail is arranged parallel to the reinforcing rail on the upper surface of the housing, separated by the connecting rail, and has connecting brackets on its outer sides. The connecting bracket is inserted into the connecting rail and, together with the connecting rail, is bolted to the housing. The plurality of seat rails, the plurality of reinforcing rails, and the plurality of connecting rails are arranged in a grid pattern.

8. The vehicle according to claim 6, wherein, The vehicle includes a pair of first crossbeams that connect the pair of side beams and are coupled to the lower surface of the floor panel. The recessed portion is located between the pair of first crossbeams. The reinforcing rail is configured such that its ends protrude from the housing on both sides of the housing, and the ends on both sides are coupled to the first crossbeam.

9. The vehicle according to claim 8, wherein, The side wall of the housing has a mounting bracket with bolt holes. Multiple partitions with bolt holes are spaced apart from each other on the first crossbeam. The reinforcing rail, the mounting bracket, and the partition are bolted together to the base plate panel.

10. The vehicle according to claim 9, wherein, The outer casing has an upper casing, a lower casing, and guide rails formed from extruded material. The guide rail, together with the side wall of the upper housing and the side wall of the lower housing, is bolted to the mounting bracket.

11. The vehicle according to claim 2, wherein, The vehicle also includes at least one reinforcing crossbeam located within the recess on the floor panel, with its two ends respectively attached to the side beams.

12. The vehicle according to claim 11, wherein, The ramp device includes a housing and at least one channel portion formed on the lower surface of the housing to accommodate the reinforcing beam.

13. The vehicle according to claim 12, wherein, The channel portion is coated with an adhesive, thereby connecting the reinforcing beam to the channel portion.

14. The vehicle according to claim 12, wherein, The channel portion includes at least one insertion hole and a nut portion welded to a position corresponding to the insertion hole. Bolts passing through the battery module and the reinforcing beam are fastened to the nut portion.

15. A vehicle comprising: The battery module is integrated with a pair of side beams; A ramp device, located on the battery module and at least connected to the side beam; as well as Multiple seat rails are configured on and connected to the ramp device.

16. The vehicle according to claim 15, wherein, The ramp device includes: shell; Multiple reinforcing rails are attached to the upper surface of the housing; and Multiple connecting rails are attached to the upper surface of the housing on both sides of the reinforcing rail.

17. The vehicle according to claim 16, wherein, The seat rail is arranged parallel to the reinforcing rail on the upper surface of the housing, separated by the connecting rail, and has connecting brackets on its outer sides. The connecting bracket is inserted into the connecting rail and is bolted together with the connecting rail to the outer casing.

18. The vehicle according to claim 16, wherein, The vehicle includes a pair of first crossbeams that connect the pair of side beams and are coupled to the upper surface of the battery module. The ramp device is located between the pair of first crossbeams. The reinforcing rail is configured such that its ends protrude from the housing on both sides of the housing, and the ends on both sides are coupled to the first crossbeam.

19. The vehicle according to claim 18, wherein, The side wall of the housing has a mounting bracket with bolt holes. Multiple partitions with bolt holes are spaced apart from each other on the first crossbeam. The reinforcing rail, the mounting bracket, and the partition are bolted together.

20. The vehicle according to claim 16, wherein, The vehicle also includes at least one reinforcing crossbeam disposed on the ramp device, with its two ends respectively connected to the side beams. The ramp device includes at least one channel portion formed on the lower surface of the housing to accommodate the reinforcing beam.

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