Door and vehicle having the same

Abstract

The present invention relates to a vehicle door and a vehicle having the same. The vehicle can include a first side beam including a downwardly recessed recess, a second side beam spaced apart from the first side beam, a floor panel located between and coupled to the first and second side beams, a battery located below the floor panel, a ramp device located on the recess of the first side beam, and a vehicle door supported by a lower arm assembly coupled to the first side beam. The vehicle door can include a door panel, an upper arm assembly coupled to an upper portion of the door panel and including an upper slider and configured to support the upper portion of the door panel, and a lower arm assembly coupled to a lower portion of the door panel and configured to support the lower portion of the door panel.

Description

Technical Field

[0001] This invention relates to vehicle doors and vehicles having them. Background Technology

[0002] For example, buses or wheelchair-accessible vehicles may include ramps to assist wheelchair users in getting on and off the bus. The ramps are equipped with a platform housed within the vehicle body, configured to extend from the vehicle body to the ground at an angle relative to the ground, either manually by the user or automatically by a motor.

[0003] On the other hand, vehicles powered by electric motors (such as hybrid or electric vehicles) use high-voltage batteries as the energy source for their motors and have battery modules comprising multiple battery cells installed at the bottom of the vehicle. In this case, installing a wheelchair ramp on the vehicle would interfere with the layout of the battery modules, as the ramp is primarily located at the bottom of the vehicle, thus making it unsuitable.

[0004] To avoid this problem, if the ramp is installed on the vehicle's floor panel, the step height will increase, making it inconvenient for passengers to get on and off the vehicle. In addition, because the ramp is higher than the ground, the platform's tilt angle is difficult to meet the specified tilt angle (e.g., 7.1°), and there is also the disadvantage of an excessive step height difference between the platform and the vehicle's floor panel.

[0005] Furthermore, for example, if the door is a sliding door, space constraints can cause interference between the door rails and the ramp mechanism, preventing the platform from being pulled out. Alternatively, if the door is a swing door, the length and shape of the door arm will be limited, resulting in insufficient door opening. To address this issue, for example, to increase the opening range, if the arm length and / or shape are made larger, there is a problem of arm interference with the vehicle body. Summary of the Invention

[0006] The present invention relates to a door and a vehicle having the door, which can be operated in a complex manner without interfering with a ramp device for assisting wheelchair access.

[0007] Embodiments of the present invention may provide a door that can be installed without interfering with the layout of the battery module, the operation of the ramp device, or the vehicle body, and a vehicle having the door.

[0008] Embodiments of the present invention may provide a vehicle equipped with doors that ensure an opening range, thereby maintaining and / or improving the convenience of passenger boarding and alighting, and also equipped with a ramp device that allows the platform to tilt at a specified angle without increasing the step height.

[0009] According to an embodiment of the invention, the vehicle may include: a floor panel coupled to a pair of spaced-apart side beams and having a downwardly recessed recess; a battery module located below the floor panel; a ramp device located on the recess; and a door supported by a lower arm assembly coupled to the side beams.

[0010] The vehicle may also include multiple seat rails, which are mounted on and integrated into the ramp device.

[0011] An internal floor can be installed on multiple seat rails or at the same height as the upper surface of the seat rails.

[0012] The ramp device may include: a housing; a plurality of reinforcing guide rails coupled to the upper surface of the housing; and a plurality of connecting guide rails coupled to the upper surface of the housing on both sides of the reinforcing guide rails.

[0013] The seat guide rail can be set on the upper surface of the housing, parallel to the reinforcing guide rail with the connecting guide rail positioned between it, and connecting brackets can be provided on both sides. The connecting brackets can be inserted into the connecting guide rail and screwed together with the connecting guide rail to the housing.

[0014] The vehicle may include a pair of crossbeams attached to the lower surface of the floor panel and connecting to a pair of side beams. A recess may be located between the pair of crossbeams, with a depth equal to the height of the ramp assembly housing. Reinforcing rails may have ends projecting from the housing on both sides, and these ends may be attached to the crossbeams.

[0015] The side beam may include: an inner plate of the side beam; and a reinforcing side member that is connected to one side of the inner plate of the side beam.

[0016] The lower arm assembly can be mounted on the upper surface of the inner plate of the side beam.

[0017] The side beam may have a recessed portion formed by lowering the upper surface of the longitudinal center of the side beam. The lower arm assembly may be coupled to a mounting portion provided on the upper surface of the inner plate of the side beam at a location away from the recessed portion.

[0018] The door may include: a door panel; an upper arm assembly mounted on the upper side of the vehicle and supporting the upper part of the door panel; and a lower arm assembly attached to a side beam and supporting the lower part of the door panel.

[0019] The door panel can contact the side beam, and the contact point between the side beam and the door panel can be located at a lower position than the ramp device or floor panel.

[0020] According to an embodiment of the present invention, a vehicle door may include: a door panel; an upper arm assembly supporting an upper portion of the door panel; and a lower arm assembly supporting a lower portion of the door panel. The upper arm assembly may include: an upper support rail fixed to the upper portion of the door panel; an upper slider slidably mounted on the upper support rail; and a first upper arm and a second upper arm, each having one end connected to the vehicle body and the other end rotatably connected to the upper slider.

[0021] The upper arm assembly may further include: an upper support member, which is coupled to the upper side of the vehicle body and has a first hinge hole and a second hinge hole, one end of the first upper arm being rotatably connected to the first hinge hole, and one end of the second upper arm being rotatably connected to the second hinge hole; and a drive unit mounted on the upper support member, which is connected to the first upper arm and rotates the first upper arm.

[0022] The first upper arm may also include a hub fixed to one end and rotatably connected to a first hinge hole via a spool pin inserted into the hub and fixed to the upper support.

[0023] The outer circumferential surface of the hub may include a sector gear having multiple teeth thereon, and the drive unit may include a motor and a gear. The sector gear may mesh with the gear, allowing the first upper arm to rotate around the bobbin pin.

[0024] The upper slider may have a first hinge portion and a second hinge portion, the first hinge portion and the second hinge portion being spaced apart from each other by a set, selected or predetermined distance, the other end of the first upper arm may be rotatably connected to the first hinge portion, and the other end of the second upper arm may be rotatably connected to the second hinge portion.

[0025] The upper arm assembly may include an opening line and a closing line, which apply a driving force to allow the upper slider to slide.

[0026] One end of the opening line and one end of the closing line can be fixed by being hooked onto the thread pin. The other end of the opening line can be fixed to the first fixing protrusion of the upper support guide rail, which is adjacent to the second hinge part. The other end of the closing line can be fixed to the second fixing protrusion of the upper support guide rail, which is adjacent to the first hinge part.

[0027] The lower arm assembly may include: a lower support member mounted on a side beam of the vehicle body and having a plurality of hinge holes; a lower main arm, one end of which is hinged to the lower part of a door panel; a T-shaped bracket having a column and a pair of wings formed at one end of the column, the other end of which is coupled to the other end of the lower main arm; a first lower arm, one end of which is rotatably connected to the lower support member and the other end of which is hinged to one of the pair of wings; and a second lower sub-arm, one end of which is rotatably connected to the lower support member and the other end of which is hinged to the other of the pair of wings.

[0028] The lower arm assembly may also include: a lower support rail fixed to the lower part of the door panel; and a lower slider slidably mounted on the lower support rail and rotatably connected at one end of the lower main arm to the lower slider. Attached Figure Description

[0029] The above and other aspects, features, and advantages of exemplary embodiments of the present invention will become clearer from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a perspective view showing the doors and body of a vehicle according to an embodiment of the present invention;

[0031] Figure 2 It is shown Figure 1 A perspective view of the lower part of the car body;

[0032] Figure 3 yes Figure 2 Side view;

[0033] Figure 4 From Figure 2 Perspective views of the ramp and seat rails are omitted;

[0034] Figure 5 It is along Figure 3 The cross-sectional view taken along line A-A' shows the closed state of the vehicle door according to an embodiment of the present invention;

[0035] Figure 6 It is along Figure 3 The cross-sectional view taken along line B-B' shows the deployed state of the ramp device according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram showing the operating state of the ramp device according to an embodiment of the present invention;

[0037] Figure 8 This is a perspective view showing the ramp device and seat rail according to an embodiment of the present invention;

[0038] Figure 9 It is along Figure 2 A cross-sectional view taken from the C-C' line;

[0039] Figure 10 This is a perspective view showing the upper arm assembly of a car door according to an embodiment of the present invention;

[0040] Figure 11 yes Figure 10 An exploded perspective view of the upper arm assembly shown;

[0041] Figure 12This is a schematic diagram illustrating the arrangement and operation of the wires in the upper arm assembly according to an embodiment of the present invention;

[0042] Figure 13 This is a schematic diagram illustrating the operation of the upper arm assembly according to an embodiment of the present invention;

[0043] Figure 14 This is a perspective view showing the lower arm assembly of a door according to an embodiment of the present invention;

[0044] Figure 15 yes Figure 14 An exploded perspective view of the lower arm assembly shown; and

[0045] Figure 16 This is a schematic diagram illustrating the operation of the lower arm assembly according to an embodiment of the present invention. Detailed Implementation

[0046] In the following, exemplary embodiments of the invention will be described in detail with reference to the exemplary accompanying drawings. When adding reference numerals to components in the various drawings, the same reference numerals will be used as much as possible, even if the same component is shown in different drawings.

[0047] Vehicles can refer to all types of vehicles that transport objects (such as people, animals, or objects) from a point of origin to a point of destination. Such vehicles are not necessarily limited to those that travel on roads or tracks.

[0048] In this specification, for ease of explanation, exemplary embodiments of the invention are described using vehicles with motors that receive power from batteries (such as hybrid vehicles or electric vehicles) as examples, but the invention is not necessarily limited thereto.

[0049] In this specification, terms such as “first” and “second” may be used to describe various components, but the order, size, position or importance of these components are not necessarily limited by terms such as “first” and “second”, and these adjectives may be used to name components only for the purpose of distinguishing one component from another.

[0050] In this manual, the terms “up,” “below,” “upward,” “downward,” “upper part,” “lower part,” “left / right,” “inner,” “outer,” “front,” “rear,” “forward,” “rear,” etc., may be used relative to the direction of the vehicle or body.

[0051] Figure 1 This is a perspective view showing the doors and body of a vehicle according to an embodiment of the present invention. Figure 2 It is shown Figure 1 A perspective view of the lower part of the car body. Figure 3 yes Figure 2 Side view. Figure 4 From Figure 2 Perspective views of the ramp and seat rails are omitted. Figure 5 It is along Figure 3 A cross-sectional view taken from the A-A' line. Figure 6 It is along Figure 3 A cross-sectional view taken from the B-B' line.

[0052] like Figures 1 to 6 As shown, a vehicle according to an embodiment of the present invention may include a floor panel 10, a battery module 40, a ramp device 50, and a door 60, any one, any combination of, or all of which may be multiple, or may include multiple components thereof.

[0053] A vehicle may include a body, and the body can be manufactured in various shapes and sizes. For example, the body can be formed into an approximately rectangular, hexahedral, or front-to-back symmetrical shape.

[0054] The vehicle body includes pillars 3 that are installed from the four corners (when viewed from above) and extend along the height direction respectively, and side walls or windows may be provided between the pillars 3.

[0055] A boarding gate may be formed on at least one of the left and right sides of the vehicle body, and at least one door 60 may be installed on the boarding gate. Figure 1 The image shows a pair of doors symmetrically arranged in a boarding gate on one side, but the invention is not necessarily limited to this.

[0056] The lower frame structure of the vehicle body may consist of a pair of side beams 20 extending along the longitudinal direction (X) of the vehicle and forming the side of the vehicle body, and a plurality of cross beams 30 extending along the width direction (Y) of the vehicle and connecting to the two side beams.

[0057] A pair of side beams 20 may be provided on the left and right sides of the lower part of the vehicle body, and the pair of side beams may be spaced apart from each other along the vehicle width direction (Y). These side beams 20 can protect the passenger space in the event of a side collision, while also shaping the appearance of the vehicle side.

[0058] At least one of the pair of side beams 20 may have a recess 21 in the longitudinal middle portion of the side beam (e.g., along the vehicle longitudinal direction (X)), the upper surface of which is formed lower than the surrounding area. This recess may be positioned to correspond to a vehicle door 60. The space created by this recess can be used for the platform 52 of the ramp device 50 (see...). Figure 7 ( ) to enter, exit and move.

[0059] The side beam 20 may include an inner plate 22, an outer reinforcing member 23, and an outer plate 24.

[0060] The inner side beam 22 can be joined to one side of the outer side beam reinforcement 23. The outer side beam reinforcement 23 can be joined to the inner side beam 22 to form a closed section. By forming a closed section, the rigidity of the side beam 20 can be increased, thereby attenuating the collision load in the event of a lateral collision.

[0061] The outer plate 24 of the side beam can be joined to the other side of the outer reinforcement 23 of the side beam.

[0062] The side beam 20 can be joined together by welding the inner plate 22, the outer reinforcement 23 and the outer plate 24 of the side beam in three layers at its lower end and / or upper end.

[0063] The upper or lower end of the side beam 20 can be treated with a sealing machine (not shown) along the longitudinal direction (X) of the vehicle to form a seal.

[0064] Optionally, such as Figure 5 As shown, a sealing member 29 (referred to as a weatherstripping) may be installed on the outer surface of the outer panel 24 of the side beam 20 at either the upper or lower end. The sealing member 29 can block noise, wind, dust, rainwater, etc., from entering from outside the vehicle. This sealing member can form a contact point (CP) that contacts the door 60.

[0065] In a vehicle according to an embodiment of the present invention, each side beam 20 may further include a reinforcing side member 25 connected to the inner side beam plate 22, a side beam extension 26 between the inner side beam plate 22 and the reinforcing side member 25, and an inclined panel 27 adjacent to the reinforcing side member 25.

[0066] The reinforcing side member 25 can be formed by extrusion using materials such as aluminum or aluminum alloys. The reinforcing side member 25 may have a partition structure inside to have multiple closed sections. Multiple closed sections can improve the reinforcing side member's own supporting rigidity and enable the reinforcing side member to directly receive and withstand impact forces when the vehicle is subjected to a side impact.

[0067] The reinforcing side member 25 can be connected via the side beam extension 26 to the inner surface of the side beam inner plate 22 in the vehicle width direction (Y), for example, its surface opposite to the outer side beam reinforcement 23.

[0068] The reinforcing side member 25 can enhance the rigidity of the side beam 20, and the cross-sectional size of the side beam 20 in the vertical direction (e.g., the vehicle height direction (Z)) can be reduced due to the recess 21. When the vehicle is subjected to a side impact, the reinforcing side member can support the deformation of the inner plate 22 of the side beam inward in the vehicle width direction (Y), while absorbing the impact load by deforming together with the inner plate 22 of the side beam.

[0069] The reinforced side member 25 not only ensures rigidity against lateral impact energy acting on the side beam 20, but also ensures rigidity against longitudinal (X) impact energy acting on the vehicle.

[0070] By constructing and arranging the reinforced side member 25 in this way, the amount of inward induction of the side beam 20 can be minimized when the vehicle is involved in a side collision, thus giving the vehicle the advantage of being able to safely protect passengers.

[0071] The reinforcing side member 25 of the side beam 20 can be screwed to the floor panel 10, ramp device 50, etc.

[0072] To integrate the reinforcing side member 25 with the floor panel 10, ramp device 50, etc., the reinforcing side member can be configured as a pipe nut (not shown). Then, bolts inserted into the ramp device 50 can sequentially pass through the lower housing 51b of the ramp device (see...). Figure 6 ), floor panels, etc., and insert and tighten them into the tube nuts.

[0073] A tool hole 54 can be formed in the upper surface of the upper housing 51a of the housing 51 that constitutes the ramp device 50, and a tool can be inserted into the tool hole 54 to tighten the bolt.

[0074] The side beam extension 26 can be constructed from a plate having a cross-sectional shape that is bent into an inverted L-shape. The lower end of the side beam extension can be joined to the inner side beam plate 22 by welding, such as spot welding.

[0075] The reinforcing side member 25 may be formed of an extruded material and may be formed of a different material than the inner plate 22 of the side beam or the extension 26 of the side beam, so they may not be able to be directly connected to each other by a joint such as spot welding.

[0076] Therefore, the reinforcing side member 25 can be joined to the side beam extension 26 by a heterogeneous joining member (such as a flow drill screw (FDS) or the like), thereby substantially connecting to the side beam inner plate 22 and the side beam 20.

[0077] The upper end of the side beam extension 26 can be bent and formed horizontally, and can be welded to the lower surface of the floor panel 10 by spot welding or the like.

[0078] The inclined panel 27 can partially surround the reinforcing side member 25 from the inside in the vehicle width direction (Y) while connecting the side beam 20 and the floor panel 10.

[0079] The upper end of the inclined panel 27 can be formed horizontally by folding and can be joined to the lower surface of the floor panel 10 by welding such as spot welding, and the lower end of the inclined panel 27 can be formed vertically by folding and can be joined to the outer side of the inner panel 22 of the side beam by welding such as spot welding.

[0080] An adhesive can be applied to the outer surface of the inclined surface provided on the reinforcing side member 25 so that the inclined panel 27 and the reinforcing side member 25 can be joined.

[0081] The side beam extension 26 and the inclined panel 27 can form an additional side beam located further inward than the side beam 20 in the vehicle width direction (Y).

[0082] Therefore, the side beam 20 can be integrated into the floor panel 10 and mounted on the vehicle body via the reinforcing side member 25, the side beam extension 26 and the inclined panel 27.

[0083] The floor panel 10 can be installed between a pair of side beams 20. The floor panel can separate the passenger space for passengers to ride in the vehicle.

[0084] Specifically, the floor panel 10 can be joined to the side beam by, for example, welding at least the left and right edges of the floor panel to the side beam extension 26 of the corresponding side beam 20.

[0085] The floor panel 10 may include a recess 11 formed by downward indentation. The floor panel 10 having the recess 11 may be made of a metal material such as steel, and may be formed by pressing, bending, rolling, and combinations thereof.

[0086] The cross-sectional shape of the recess 11 can be approximately U-shaped or inverted trapezoidal. Through this recess, the floor panel 10 can be formed in two steps along the vehicle's longitudinal direction (X). Therefore, the floor panel 10 can have a bottom surface of the recess 11 and an upper surface 14 other than the recess.

[0087] The depth of the recess 11 can be equal to or greater than the depth of the recess 21 formed on the side beam 20. The depth of the recess can be equal to the height of the housing 51 of the ramp device 50.

[0088] Therefore, the ramp device 50 can be stably located within the recess 11, so that it will not be disturbed or obstructed during the operation of the ramp device.

[0089] Since the ramp device 50 can be located within the recess 11 and its position is lower than before, the platform's inclination can meet the specified inclination without increasing the step height. Therefore, the vehicle according to this embodiment can maintain and / or improve the convenience of passenger boarding and alighting.

[0090] The battery module 40 can be disposed in the middle of the vehicle's longitudinal (X) direction and the lower part of its height (Z) direction. A battery space (S) can be provided within the vehicle body for mounting the battery module.

[0091] For example, battery module 40 may include one or more battery cells capable of charging and discharging, a battery case 41 for housing the battery cells, and a cover 42 covering the upper part of the battery case. Since the construction of battery modules is well known, a detailed description of the battery module structure is omitted in this specification, and the battery module is described and illustrated as a single component (for simplicity).

[0092] A floor panel 10 may be installed above the battery space S. Specifically, the battery module 40 may be mounted on a pair of side beams 20 to be positioned below the floor panel.

[0093] Specifically, for example, side flanges 43 can be provided on both sides of the battery box 41, and each side flange can be connected to the lower surface of the inner plate 22 of the corresponding side beam 20 by means of bolts or the like, so that the battery module 40 can be installed on a pair of side beams.

[0094] Multiple crossbeams 30 may be joined along the vehicle longitudinal direction (X) 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 at intervals between them. A pair of crossbeams 30 may be positioned adjacent to the ramp device, such that the ramp device 50 may be joined thereto.

[0095] The multiple crossbeams 30 can each be formed as a component consisting of a single plate having a bent or curved cross-sectional shape, for example, having an open cross-section, or as a component formed by joining two or more plates in their longitudinal direction (e.g., in the vehicle width direction (Y)). However, the invention is not necessarily limited to this; the crossbeams can also be configured as tubular components with hollow portions, having a cross-sectional shape of a polygon with four or more corners.

[0096] Optionally, first flange surfaces may be formed at both ends of the crossbeam 30 in the longitudinal direction (e.g., at both ends in the vehicle width direction (Y)). Each first flange surface may be inclined in a manner corresponding to the inclined surface of the inclined panel 27 of the side beam 20. The first flange surfaces may be joined to the outer surface of the inclined surface of the inclined panel by welding (such as spot welding, laser welding, or arc welding using carbon dioxide).

[0097] A second flange can be formed on the edge extending longitudinally along the crossbeam 30 to connect the crossbeam to the floor panel 10. The second flange can be joined to the lower surface of the floor panel by welding (such as spot welding, laser welding, or arc welding using carbon dioxide).

[0098] Multiple crossbeams 30 can increase the body rigidity against collision loads that intrude longitudinally along the crossbeams due to the cross-sectional shape of the folded crossbeams.

[0099] When a side collision occurs, the collision load transmitted to the crossbeam 30 is transferred to the side beam 20, which is mechanically connected to the crossbeam, and can be distributed along the side beam in the longitudinal direction (X) of the vehicle.

[0100] The floor panel 10 can be installed on the crossbeams 30 and joined to each crossbeam by welding and / or screwing. The recess 11 can be located between an adjacent pair of crossbeams.

[0101] Optionally, the vehicle may also include at least one reinforcing crossbeam 31 disposed on the floor panel 10, extending along the vehicle width direction (Y), with its ends respectively connected to the side beams 20. By arranging the reinforcing crossbeam in this way, the rigidity of the side beams, whose cross-sectional size in the vertical direction can be reduced due to the recess 21, can be improved.

[0102] Figure 7 This is an operational state diagram of the ramp device according to an embodiment of the present invention. Figure 8 This is a perspective view showing a ramp device and seat rail according to an embodiment of the present invention. Figure 9 It is along Figure 2 A cross-sectional view taken from the C-C' line.

[0103] refer to Figure 7 and Figure 8 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 ramp drive unit 53 that can be installed inside the housing and can apply driving force to the platform. The ramp drive unit may include a motor, a reducer, etc.

[0104] The ramp device 50 may also include a power transmission mechanism (not shown) located between the ramp drive unit 53 and the platform 52, which can transmit the driving force of the ramp drive unit to the platform. As a power transmission mechanism, a mechanism with a pair of sprockets and a chain, or a mechanism with gears and a lead screw, may be used, but it is not necessarily limited to these.

[0105] The ramp device 50 constructed in this manner can be installed in the recess 11 of the floor panel 10 and fixedly attached to the floor panel. When the driving force of the ramp drive unit 53 is transmitted to the platform 52 via the power transmission mechanism, the platform can be pulled out from the housing 51 and placed in the unfolded position, with one end contacting the ground. Subsequently, when the ramp drive unit is operated in the reverse direction, the platform can be retracted into the housing and placed in the storage position.

[0106] For ease of explanation, a more detailed description of the structure and operation of the ramp device 50 will be omitted in this specification. Instead, the focus will be on describing the connection between the ramp device and the vehicle body.

[0107] The housing 51 can accommodate components of the ramp device, such as platform 52, ramp drive unit 53, etc. The housing 51 may be equipped with an upper housing 51a and a lower housing 51b (see, for example, [reference needed]). Figure 6 ).

[0108] The housing 51 may include: a plurality of reinforcing guide rails 57 which are coupled to the upper surface of the upper housing 51a; and a plurality of connecting guide rails 58 which are coupled to the upper surface of the upper housing on both sides of the reinforcing guide rails 57.

[0109] The reinforcing guide rail 57 can be made from a single plate, which may have, for example, a cross-sectional shape that is bent or flexed to have an open cross-section, but is not necessarily limited to this. For example, the reinforcing guide rail may have an open cross-section with an approximately inverted hat shape.

[0110] The length of the reinforcing guide rail 57 can be greater than the length of the housing 51 in the width direction (e.g., the longitudinal direction (X) of the vehicle). Therefore, the reinforcing guide rail can extend through the housing, and the ends of the reinforcing guide rail can protrude from the housing along the longitudinal direction of the vehicle on both sides of the housing.

[0111] The reinforcing guide rail 57 can be joined to the upper surface of the upper housing 51a by welding (such as spot welding).

[0112] The connecting rail 58 may be constructed from a single plate, which may have, for example, a cross-sectional shape that is bent or flexed to have an open cross-section, but is not necessarily limited to this. For example, the connecting rail may have an open cross-section with an approximately U-shaped form.

[0113] Multiple connecting rails 58 may be symmetrically arranged on both sides of a reinforcing rail 57 relative to a corresponding reinforcing rail. A connecting rail corresponding to one reinforcing rail may be spaced apart from the connecting rail corresponding to another reinforcing rail by a set, selected, or predetermined distance. A seat rail 55 may be located within the space between these connecting rails.

[0114] The connecting guide rail 58 can first be screwed to the upper surface of the upper housing 51a to determine the engagement position, and then it can be joined to the upper surface of the upper housing by welding such as spot welding.

[0115] The multiple reinforcing guide rails 57 may include at least one pair, for example, at least two reinforcing guide rails. The example shown in the figure uses three reinforcing guide rails, but the number of reinforcing guide rails is not necessarily limited to this. The longitudinal (e.g., vehicle longitudinal (X)) ends of each reinforcing guide rail may be screwed to the crossbeam 30.

[0116] Mounting brackets 59, each having an inverted L-shaped cross-section and bolt holes formed therein, can be welded to the two side walls of the upper housing 51a. The bolt holes can be formed in the longitudinal (e.g., vehicle longitudinal (X)) end of the reinforcing guide rail 57.

[0117] These multiple reinforced guide rails 57 can connect the load paths between the front member 1 and the rear member 2, which are disconnected by the recess 11 of the floor panel 10 and the ramp device 50, thereby dispersing and transferring the collision load and reducing the deformation of the vehicle body during a collision.

[0118] Therefore, in the vehicle according to the embodiment, the ramp device 50 can be combined with the floor panel 10 and connected and fixed to the vehicle body (e.g., a pair of crossbeams 30) via the reinforcing guide rail 57 and mounting bracket 59 fixed to the upper housing 51a of the housing 51.

[0119] Above the housing 51 of the ramp device 50, for example on the upper surface of the upper housing 51a, a plurality of reinforcing guide rails 57 and a plurality of seat guide rails 55 for mounting vehicle seats may be configured to pass through the housing of the ramp device and extend along the longitudinal direction (X) of the vehicle.

[0120] The seat rail 55 can be constructed from a single plate, which may have, for example, a bent or flexed cross-sectional shape with an open cross-section, but is not necessarily limited to this. The seat rail may have an approximately U-shaped open cross-section.

[0121] The length of the seat rail 55 may be longer than the width length of the housing 51 (e.g., the longitudinal (X) length of the vehicle) and may be longer than the length of the reinforcing rail 55.

[0122] Therefore, the seat rail 55 can extend through the ramp device 50, multiple crossbeams 30 and floor panel 10.

[0123] The seat rail 55 can be screwed to the upper surface of the upper housing 51a. For this purpose, a connecting bracket 56 having an L-shaped cross-section and bolt holes therein can be welded to the two sides of the seat rail by means of welding such as spot welding.

[0124] When the ramp device 50 is installed in the recess 11 of the floor panel 10, the upper surface of the upper housing 51a and the upper surface 14 of the floor panel 10 can be set on the same plane at the same height from the ground.

[0125] Subsequently, multiple seat rails 55 can be positioned on the upper surface of the upper housing 51a, respectively, within the space between the connecting rails 58, or positioned parallel to the reinforcing rail 57 with the connecting rails positioned between them. Each seat rail can be screwed to the upper surface of the upper housing via a connecting bracket 56.

[0126] The connecting bracket 56 can be inserted into the connecting guide rail 58 and screwed together with the connecting guide rail onto the upper surface of the upper housing 51a.

[0127] Multiple seat rails 55, 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 forming the ramp device 50. Therefore, the ramp device can be securely fixed to the floor panel 10 and the vehicle body durability and rigidity weakened due to the downward arrangement of the ramp device can be strengthened, so that the collision load can be distributed in the event of a side collision and the deformation of the vehicle body can be minimized.

[0128] The housing 51 may include at least one channel (not shown) formed on the lower surface of the lower housing 51b and accommodating the reinforcing beam 31.

[0129] refer to Figure 9 In the vehicle according to the embodiment, the ramp device 50 may be located on the floor panel 10, a plurality of seat rails 55 may be located on the ramp device, and an interior floor 5 (e.g., a carpet surface) may be provided on the plurality of seat rails 55 or at the same height as the upper surface of the seat rails.

[0130] Refer again Figure 1 As mentioned above, door 60 can be installed on the vehicle body's entry port.

[0131] According to the embodiment, the door 60 may include: a door panel 61; an upper arm assembly 70, which is coupled to the upper side of the entry opening in the vehicle body and supports the upper part of the door panel, so that the door panel can open and close the entry opening; and a lower arm assembly 80, which is coupled to the side beam 20 and supports the lower part of the door panel, so that the door panel can open and close the entry opening.

[0132] The door panel 61 can be configured to correspond to the entry opening of the vehicle body and can be movably and rotatably mounted relative to the vehicle body. Thus, the door panel can close or open the entry opening.

[0133] Figure 10 This is a perspective view showing the upper arm assembly of a car door according to an embodiment of the present invention. Figure 11 yes Figure 10 An exploded perspective view of the upper arm assembly shown. Figure 12 This is a schematic diagram illustrating the arrangement and operation of the wires in the upper arm assembly according to an embodiment of the present invention. Figure 13 This is a schematic diagram illustrating the operation of the upper arm assembly according to an embodiment of the present invention;

[0134] The upper arm assembly 70 may include an upper support 71, a first upper arm 72, a second upper arm 73, and a door drive unit 63.

[0135] The upper support 71 can be formed as a bracket with multiple hinge holes 71a and 71b. The figure shows an example of an upper support consisting of a pair of plates, but it is not necessarily limited to this.

[0136] The upper support 71 can be attached to the upper side of the access hatch in the vehicle body. Specifically, for example, the upper support 71 can be mounted on the roof side (not shown) above a pair of door support pillars 4 that separate the vehicle body from the access hatch, connected along the longitudinal direction (X) of the vehicle, but is not necessarily limited to this.

[0137] One end of the first upper arm 72 may have a fixed hub 72a and be rotatably connected to a first hinge hole 71a of the upper support member 71 via a spool pin 72b inserted through the fixed hub 72a. The other end of the first upper arm may be hinged to the upper part of the door panel 61. The first upper arm 72 may have a so-called gooseneck-shaped bend to maximize the opening amount of the door 60. The spool pin 72b may be fixedly attached to the upper support member 71.

[0138] One end of the second upper arm 73 can be rotatably hinged to the second hinge hole 71b of the upper support 71, and the other end of the second upper arm 73 can be hinged to the upper part of the door panel 61. The second upper arm 73 can have a straight shape, but is not necessarily limited to this.

[0139] The first upper arm 72 and the second upper arm 73 may be positioned such that they are spaced apart from each other by a set, selected, or predetermined distance along the longitudinal direction of the upper support 71 (e.g., the longitudinal direction (X) of the vehicle). The second upper arm 73 may be displaced from its native location according to the rotation and movement of the first upper arm 72, and may share the load of the vehicle door panel 61 with the first upper arm 72 to enhance structural stability.

[0140] The door drive unit 63 may include a motor 64, gears 65, etc., and may be coupled to the first upper arm 72 to rotate the first upper arm 72. A motor capable of both forward and reverse rotation may be used as the motor 64, and its rotation direction, rotation speed, etc., may be determined according to a control signal from a control unit (not shown). The door drive unit 63 may be mounted on the upper support member 71.

[0141] For example, a sector gear 74 with multiple teeth may be formed or integrally assembled on one side of the outer peripheral surface of the hub 72a fixed to one end of the first upper arm 72. Since the sector gear 74 meshes with the gear 65 that constitutes the door drive unit 63, the first upper arm 72 can rotate around the bobbin pin 72b by the driving force generated from the motor 64 according to the rotation of the gear 65 and the sector gear 74.

[0142] Optionally, the upper arm assembly 70 may also include an upper support rail 75 fixed to the upper part of the door panel 61, and an upper slider 76 slidably mounted on the upper support rail 75.

[0143] The upper support rail 75 may have an open cross-sectional shape that is approximately laterally positioned in a U-shape. The hollow portion inside the upper support rail 75 may extend along the longitudinal direction of the upper support rail (e.g., the longitudinal direction (X) of the vehicle) to form a path for the upper slider 76 to slide.

[0144] The upper slider 76 can be inserted into the hollow part of the upper support rail 75 and can slide back and forth along the longitudinal direction of the upper support rail (e.g., the longitudinal direction (X) of the vehicle).

[0145] The upper slider 76 may include a plurality of hinge portions 76a and 76b spaced apart from each other at a set, selected, or predetermined distance along the longitudinal direction of the upper slider (e.g., the longitudinal direction (X) of the vehicle). The other end of the first upper arm 72 may be rotatably hinged to the first hinge portion 76a of the upper slider 76, and the other end of the second upper arm 73 may be rotatably hinged to the second hinge portion 76b of the upper slider 76.

[0146] Therefore, the door panel 61 can rotate together with the first upper arm 72 and the second upper arm 73 by the driving force transmitted to the first upper arm 72, and can move relative to the first upper arm 72 and the second upper arm 73 along the vehicle longitudinal direction (X) by the upper support rail 75 and the upper slider 76.

[0147] The upper arm assembly 70 may include an opening line 77 and a closing line 78, which apply a driving force to allow the upper slider 76 to slide. Fixed protrusions 75a and 75b may be respectively disposed at both ends of the upper support guide 75 along the longitudinal direction of the upper support guide 75.

[0148] One end of the opening line 77 and one end of the closing line 78 can be hooked and secured together by a bobbin pin 72b located on one end of the first upper arm 72 and fixedly connected to the upper support member 71. This hooking and securing can be achieved by forming an insertion hole in the bobbin pin and inserting one end of each line into the insertion hole.

[0149] The opening wire 77 and the closing wire 78 can be configured to be wound around the bobbin 72b in opposite directions. For example, the opening wire 77 can be wound counterclockwise around the bobbin 72b, and the closing wire 78 can be wound clockwise around the bobbin 72b.

[0150] The opening line 77 extends from the spool pin 72b along the first upper arm 72, passes through the first hinge portion 76a and the second hinge portion 76b of the upper slider 76 in sequence, and then its other end can be fixed to the first fixing protrusion 75a of the upper support guide rail 75 adjacent to the second hinge portion.

[0151] The closing line 78 extends from the spool pin 72b along the first upper arm 72 and is wound around the hinge pin in the first hinge portion 76a of the upper slider 76. Its other end can be fixed to the second fixing protrusion 75b of the upper support guide rail 75 adjacent to the first hinge portion.

[0152] For example, when the door 60 is closed, the motor 64 of the door drive unit 63 rotates to cause the first upper arm 72 to rotate in one direction. The opening wire 77, one end of which is fixed to the spool pin 72b, winds around the spool pin as the first upper arm rotates. The tension generated by the opening wire can be applied, in the amount of the winding length, to the first fixing protrusion 75a of the upper support guide rail 75 adjacent to the second hinge portion 76b of the upper slider 76.

[0153] As the first upper arm 72 rotates, the closed wire 78, one end of which is fixed to the spool pin 72b, disengages from the spool pin, thereby releasing the tension generated by the closed wire.

[0154] Therefore, the upper support rail 75 can move relative to the upper slider in the direction from the second hinge portion 76b to the first hinge portion 76a of the upper slider 76. Therefore, the door panel 61 fixed to the upper support rail 75 can move relative to the first upper arm 72 and the second upper arm 73 along the vehicle longitudinal direction (X), and the opening amount of the door can be increased by the linear movement of the door panel.

[0155] Conversely, when the door 60 is opened and the motor 64 of the door drive unit 63 rotates in the opposite direction to cause the first upper arm 72 to rotate in the opposite direction, the closed wire 78, one end of which is fixed to the spool pin 72b, winds around the spool pin as the first upper arm rotates. The tension generated by the closed wire can be applied, by the length of the winding, to the second fixed protrusion 75b of the upper support guide rail 75 adjacent to the first hinge portion 76a of the upper slider 76.

[0156] As the first upper arm 72 rotates, the opening line 77, which is fixed at one end to the spool pin 72b, disengages from the spool pin, thereby releasing the tension generated by the opening line.

[0157] Therefore, the upper support rail 75 can move relative to the upper slider in the direction from the first hinge portion 76a to the second hinge portion 76b of the upper slider 76. Therefore, the door panel 61 fixed to the upper support rail 75 can move relative to the first upper arm 72 and the second upper arm 73 along the vehicle longitudinal direction (X).

[0158] Optionally, each of the open wire 77 and the closed wire 78 can be inserted into and penetrate the protective tube 79. Specifically, the protective tube may partially surround the open wire or the closed wire.

[0159] The protective tube 79 can be a tubular component made of flexible material, which can protect the opening wire 77 and the closing wire 78 respectively, and guide the movement paths of the opening wire and the closing wire. Due to the protective tube, the opening wire and the closing wire will not deviate far from their original positions and can move relative to each other within the protective tube.

[0160] One end of the protective tube 79 of the opening line 77 is fixed to a fixing clip 79a installed in the first upper arm 72 adjacent to the spool pin 72b, and the other end is fixed to a fixing clip 79b installed in the upper slider 76 adjacent to the second hinge portion 76b. Therefore, both ends of the protective tube of the opening line can be fixed, and the opening line can move back and forth relative to each other within the protective tube.

[0161] One end of the protective tube 79 of the closed wire 78 is fixed to a fixing clip 79a installed in the first upper arm 72 adjacent to the spool pin 72b, and the other end is fixed to a fixing clip 79c installed in the upper slider 76 adjacent to the end of the first hinge portion 76a. Therefore, both ends of the protective tube of the closed wire can be fixed, and the closed wire can move back and forth relative to each other within the protective tube.

[0162] Thus, the door 60 according to the embodiment has the advantage of being able to rotate and linearly move the door panel 61 via a single door drive unit 63. Therefore, the door 60 according to the embodiment can simultaneously swing and slide, thereby achieving a combined behavior.

[0163] Figure 14 This is a perspective view showing the lower arm assembly of a door according to an embodiment of the present invention. Figure 15 yes Figure 14 An exploded perspective view of the lower arm assembly shown. Figure 16 This is a schematic diagram illustrating the operation of the lower arm assembly according to an embodiment of the present invention.

[0164] The lower arm assembly 80 may include a lower support 81, a lower main arm 82, a T-shaped bracket 83, a first lower arm 84, and a second lower sub-arm 85. Therefore, the lower arm assembly 80 may include a five-segment linkage mechanism.

[0165] The lower support member 81 can be formed as a bracket with multiple hinge holes 81a and 81b. In the example shown in the figure, the lower support member is configured to have a quadrilateral cross-sectional shape from a pair of plates, such as an upper plate and a lower plate bent into an approximately U-shape, but the shape of the lower support member is not necessarily limited to this.

[0166] The lower support member 81 can be attached to the underside of the access hatch in the vehicle body. Specifically, for example, the lower support member can be mounted to the mounting portion 28 by means of screws, which is welded to the upper surface of the inner side beam plate 22 that constitutes the side beam 20 of the vehicle body. Therefore, the lower arm assembly can be attached to the side beam.

[0167] In this way, by positioning and attaching the lower support 81 and the lower arm assembly 80 to the side beam 20, the contact point (CP) between the vehicle body and the door panel 61 can be lower than before. Specifically, the contact point (CP) between the side beam and the door panel can be lower than the position of the ramp device 50 or the floor panel 10.

[0168] Therefore, the following advantages can be obtained: the space required for installing and opening / closing the door 60 can be ensured, while interference between the ramp device 50 deployment platform 52 and the door can be prevented.

[0169] The lower support member 81 can be located in the side beam 20 at a position offset from the recess 21 along the longitudinal direction (X) of the vehicle body. In this way, the lower support member 81 and the lower arm assembly 80 are arranged and integrated outside the recess of the side beam and the recess of the floor panel 10, thereby obtaining the advantage of preventing interference between the deployment platform 52 of the ramp device 50 and the lower arm assembly.

[0170] One end of the lower main arm 82 can be hinged to the lower part of the door panel 61. The lower main arm can have a straight shape, but is not necessarily limited to this.

[0171] The T-shaped bracket 83 may include a column 83a and a pair of wings 83b formed by extending from one end of the column. Hinge holes 83c may be formed at the free ends of each wing. In the T-shaped bracket, the other end of the column may be fixedly attached to the other end of the lower main arm 82. An example of the T-shaped bracket being screwed to the other end of the lower main arm is shown in the figure, but the invention is not limited thereto.

[0172] The first lower arm 84 and the second lower sub-arm 85 may have a shape that bends symmetrically in opposite directions. The first lower arm and the second lower sub-arm may be configured to cross each other and be spaced apart from each other along the vehicle height direction (Z) at the lower support 81.

[0173] For example, one end of the first lower arm 84 may have a fixed tubular hinge shaft 84a and may be rotatably connected to the lower support 81 via a hinge pin 84b inserted through the hinge shaft. The other end of the first lower arm may be hinged to a hinge hole 83c of a wing 83b on one side of the T-shaped bracket 83.

[0174] One end of the second lower arm 85 may have a fixed tubular hinge shaft 85a and be rotatably connected to the lower support 81 via a hinge pin 85b inserted through the hinge shaft. The other end of the second lower arm may be hinged to a hinge hole 83c of another wing 83b on the other side of the T-shaped bracket 83.

[0175] If hinge pins 84b and 85b are configured as bolts, the hinge pins can rotatably connect the lower arms 84 and 85 to the lower support 81, while also serving to connect the upper and lower plates of the lower support.

[0176] Therefore, in the lower support member 81, the first lower arm 84 and the second lower sub-arm 85 can be spaced apart from each other by a set, selected, or predetermined distance along the longitudinal direction of the lower support member 81 (e.g., the vehicle longitudinal direction (X)), and intersect each other while being spaced apart from each other in the vehicle height direction (Z). The lower sub-arms can be moved subordinately according to the rotation and movement of the lower main arm 82, and the trajectory of the door panel 61 can be controlled.

[0177] The driving force for the lower main arm 82, T-shaped bracket 83, first lower arm 84, and second lower sub-arm 85 can be generated by the door drive unit 63 and provided to the lower main arm 82 via the door panel 61. As the lower main arm, which is hinged to the door panel, rotates, the first lower arm and the second lower sub-arm can rotate together with the T-shaped bracket around their respective hinge pins 84b and 85b.

[0178] Optionally, the lower arm assembly 80 may include a sliding mechanism in addition to the five-link mechanism. For this purpose, the lower arm assembly may also include a lower support rail 87 fixed to the lower part of the door panel 61 and a lower slider 88 slidably mounted on the lower support rail.

[0179] The lower support rail 87 may have an open cross-sectional shape that is approximately laterally positioned in a U-shape. The hollow portion inside the lower support rail may extend longitudinally (e.g., longitudinal direction (X) of the vehicle) to form the path for the sliding of the lower slider 88.

[0180] The lower slider 88 can be inserted into the hollow part of the lower support guide rail 87 and can slide back and forth along the longitudinal direction of the lower support guide rail (e.g., the longitudinal direction (X) of the vehicle).

[0181] The lower slider 88 may have a hinge portion 88a, and one end of the lower main arm 82 may be rotatably hinged to the hinge portion of the lower slider.

[0182] Therefore, the door panel 61 can rotate the lower main arm 82 by the driving force transmitted from the door drive unit 63 and the upper arm assembly 70, and can move relative to the lower main arm in the longitudinal direction (X) of the vehicle by the lower support guide rail 87 and the lower slider 88.

[0183] Thus, the door 60 according to the embodiment has the advantage of being able to rotate and linearly move the door panel 61 via a single door drive unit 63. Therefore, the door according to the embodiment can achieve a combined behavior by simultaneously swinging and sliding, and the sliding distance of the door panel 61 can be used to increase the opening amount of the door.

[0184] When the vehicle door 60 is opened by sliding while swinging, sufficient space is provided for the platform 52 of the ramp device 50 to be pulled out from the housing 51, so that the platform can be positioned in the unfolded position without interfering with the door panel 61 or the lower arm assembly 80.

[0185] As described above, according to embodiments of the present invention, doors can be installed without interfering with the layout of the battery module, the operation of the ramp device, or the vehicle body.

[0186] According to an embodiment of the present invention, in conjunction with a ramp device that allows the platform to maintain a specified inclination without increasing the step height, the doors can be operated in a complex manner to ensure the opening amount, thereby maintaining and / or improving the convenience of passengers getting on and off the vehicle.

[0187] Several exemplary embodiments have been disclosed herein. It will be understood that various features from different exemplary embodiments can be combined in embodiments of the present invention.

[0188] Although exemplary embodiments have been described and illustrated above, those skilled in the art will understand that modifications and variations may be made without departing from the scope of the invention as defined by the claims and their equivalents.

Claims

1. A vehicle comprising: First side beam; The second side beam is spaced apart from the first side beam; A floor panel between the first side beam and the second side beam, the floor panel being coupled to the first side beam and the second side beam, the floor panel including a downwardly recessed recess; The battery is located below the floor panel; A ramp device located on the recess of the floor panel; as well as The door is supported by a lower arm assembly attached to the first side beam.

2. The vehicle according to claim 1, wherein, Also includes: Seat rails are provided on and attached to the ramp device.

3. The vehicle according to claim 2, wherein, It also includes: an internal floor, which is disposed on the seat rail or at the same height as the upper surface of the seat rail.

4. The vehicle according to claim 2, wherein, The ramp device includes: case; Multiple reinforcing guide 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 rails.

5. The vehicle according to claim 4, wherein, The seat guide rail is disposed on the upper surface of the housing, parallel to the reinforcing guide rail, with the connecting guide rail positioned between them. The seat rail includes connecting brackets on both sides. The connecting bracket is inserted into the connecting guide rail and screwed together with the connecting guide rail to the housing.

6. The vehicle according to claim 5, wherein, It also includes: a pair of crossbeams that are attached to the lower surface of the floor panel and connect the first side beam and the second side beam. The recess is located between the pair of crossbeams and has the same depth as the height of the housing of the ramp device. The reinforcing guide rail has ends that protrude from the housing on both sides, and the ends on both sides are connected to the crossbeam.

7. The vehicle according to claim 1, wherein, The first side beam includes: Side beam inner plate; and A reinforcing side member is attached to the first side of the inner plate of the side beam.

8. The vehicle according to claim 7, wherein, The lower arm assembly is disposed on the upper surface of the inner plate of the side beam.

9. The vehicle according to claim 8, wherein, The first side beam includes a recess at its longitudinal midpoint, the recess being lower than at least a portion of the floor panel. It also includes: a mounting portion disposed on and attached to the upper surface of the first side beam of the inner plate of the side beam at a position away from the recess, such that the lower arm assembly is engaged with the mounting portion.

10. The vehicle according to claim 1, wherein, The vehicle door includes: Door panel; An upper arm assembly, which is mounted on the upper side of the vehicle and supports the upper part of the door panel; and The lower arm assembly is attached to the first side beam and supports the lower part of the door panel.

11. The vehicle according to claim 10, wherein, The door panel is configured to contact the first side beam, such that the contact point between the first side beam and the door panel is located at a lower position than the ramp device or the floor panel.

12. A vehicle door, comprising: Door panel; An upper arm assembly, which is attached to the upper part of the door panel and is configured to support the upper part of the door panel. The upper arm assembly includes: An upper support rail is fixed to the upper part of the door panel; An upper slider is slidably mounted on the upper support guide rail; First upper arm; and The second upper arm, each of the first and second upper arms having a first end configured to be connected to the vehicle body and a second end rotatably connected to the upper slider; and The lower arm assembly is attached to the lower part of the door panel and is configured to support the lower part of the door panel.

13. The vehicle door according to claim 12, wherein, The upper arm assembly also includes: An upper support member, which is attached to the upper side of the vehicle body and has a first hinge hole and a second hinge hole, wherein the first end of the first upper arm is rotatably connected to the first hinge hole, and the first end of the second upper arm is rotatably connected to the second hinge hole; and A drive unit, which is mounted on the upper support, is connected to the first upper arm and is configured to rotate the first upper arm.

14. The vehicle door according to claim 13, wherein, The first upper arm also includes a hub fixed to the first end of the first upper arm, and the hub is rotatably connected to the first hinge hole via a spool pin inserted into the hub and fixed to the upper support.

15. The vehicle door according to claim 14, wherein, The outer peripheral surface of the hub includes a sector gear, which has teeth thereon. The drive unit includes a motor and gears. The sector gear meshes with the gear, such that the first upper arm is configured to rotate about the bobbin pin.

16. The vehicle door according to claim 14, wherein, The upper slider includes a first hinge portion and a second hinge portion spaced apart from each other by a first distance. The second end of the first upper arm is rotatably connected to the first hinge portion. The second end of the second upper arm is rotatably connected to the second hinge portion.

17. The vehicle door according to claim 16, wherein, The upper arm assembly includes an opening line and a closing line, which are configured to apply a driving force so that the upper slider can slide.

18. The vehicle door according to claim 17, wherein, The first opening end of the opening line and the first closing end of the closing line are configured to be fixed by being hooked onto the spool pin. The second opening line end of the opening line is fixed to the first fixing protrusion of the upper support guide rail, and the first fixing protrusion is adjacent to the second hinge portion. The second end of the closed line is fixed to the second fixed protrusion of the upper support guide rail, and the second fixed protrusion is adjacent to the first hinge portion.

19. The vehicle door according to claim 12, wherein, The lower arm assembly includes: The lower support member is configured to be mounted on the side beam of the vehicle body and has multiple hinge holes; The lower main arm has a first lower main arm end that is hinged to the lower part of the door panel; A T-shaped bracket has a column and a pair of wings formed on a first column end of the column, the second column end of the column being connected to a second lower main arm end of the lower main arm; The first lower arm has a first lower arm end rotatably connected to the lower support and a second lower arm end hinged to one of the pair of wings; and The second lower arm has a first-second lower arm end that is rotatably connected to the lower support and a second-second lower arm end that is hinged to the other of the pair of wings.

20. The vehicle door according to claim 19, wherein, The lower arm assembly also includes: A lower support rail, which is fixed to the lower part of the door panel; and The lower slider is slidably mounted on the lower support guide rail, and the first lower main arm end of the lower main arm is rotatably connected to the lower slider.

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