VEHICLE BODY
Patent Information
- Application Number
- DE102024107900
- Authority / Receiving Office
- DE · DE
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-10-10
- Filing Date
- 2024-03-20
- Publication Date
- 2025-04-10
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
1. Technical FieldThe present disclosure relates to a vehicle body having a space formed behind a first row of seats of a vehicle and configured to be integrally separable and replaceable.2. BackgroundWith the increasing interest in the environment, people have recently become increasingly interested in an electric vehicle having an electric motor as a drive source.Such an electric vehicle can offer a large interior space resembling a living room by using the flat floor which is one of the features of the electric vehicle. For example, in the case of an autonomous vehicle, a special vehicle (PDV), and a three-row-of-seats vehicle, various types of bed seats are proposed that allow a passenger to comfortably rest and sleep while driving in a vehicle. Particularly, in view of an increasing independent recreational culture, there is also an increasing demand for a vehicle configured that a passenger can enjoy camping or traveling while sleeping in the vehicle.Recently, in order to realize a large interior space and to reliably manufacture a practical vehicle, research and development (F&E) has been actively conducted on a type of vehicle consisting of a cabin part corresponding to a front part of a vehicle having a first row of seats, the cabin part being fixed to a lower frame of the vehicle, and a variable part corresponding to a rear part of the first row of seats, i.e., a rear part of the vehicle, the variable part being detachable from the lower frame of the vehicle.Accordingly, since the variable part is provided so as to be detachable from the lower frame, it is necessary that the cabin part and the variable part be reliably fixed to each other. In the prior art, the cabin part and the variable part are connected to one another by mechanical fixing. However, in the case of mechanical fixation, additional work is required in the replacement of the variable part to assemble or disassemble the cabin part and the variable part. Accordingly, there is a problem that durability deteriorates due to frequent assembly and disassembly.The information disclosed in this Background of the Disclosure section is merely for enhancement of understanding of the general background of the disclosure and should not be taken as an acknowledgement or suggestion that this information forms the related art already known to those skilled in the art.OVERVIEWTherefore, the present disclosure has been made in view of the above problems, and it is an object of the present disclosure to provide a vehicle body having a space formed behind a first row of seats of a vehicle and configured to be integrally separable and replaceable.The objects of the present disclosure are not limited to the above-mentioned objects, and other technical objects not mentioned herein will be clearly understood by those skilled in the art to which the present disclosure pertains from the detailed description of the embodiments.According to the present disclosure, the above and other objects can be achieved by providing a vehicle body including a floor frame configured to allow driving parts of a vehicle and wheels thereof to be mounted thereon, a fixed inner part mounted on and fixed to the floor frame, a replaceable inner part having a lower portion detachably mounted on the floor frame, and a side detachably mounted on the fixed inner part, the replaceable inner part being replaceable depending on a use purpose of the vehicle, and a magnetic module provided between the replaceable inner part and the floor frame or between the replaceable inner part and the fixed inner part and configured to selectively apply a fastening force to the replaceable inner part according to a current flow flowing through a coil.The magnet module may include a permanent magnet and the coil, and an external object in contact with the magnet module and the permanent magnet may selectively generate a magnetic field according to the current flow through the coil, whereby the magnet module and the external object may be selectively fixed to each other or separated from each other.The magnet module may be accommodated in one of the replaceable inner part and the bottom frame, and the other serving as an external object may be fixed to or separated from the magnet module.The magnet module may be accommodated in one of the replaceable inner part and the fixed inner part, and the other part serving as an external object may be fixed to or separated from the magnetic module.The plurality of magnet modules may be provided to be spaced apart from each other along an edge of the bottom frame, the fixed inner part, or the replaceable inner part.The interchangeable inner member may slide and move when the lower portion of the interchangeable inner member is loaded onto an upper portion of the floor frame from a loading point to a seating point located forward of the loading point, and the lower portion of the interchangeable inner member and the floor frame may be secured together at the seating point by the magnet module.The bottom frame may include a first guide pin formed to protrude upward therefrom, the interchangeable inner member may include an elongated hole provided at its lower portion, wherein the elongated hole may be disposed in a region corresponding to a point at which the first guide pin is provided, the first guide pin may be inserted into the elongated hole when the lower portion of the interchangeable inner member is loaded on the bottom frame, the inserted first guide pin may move along the elongated hole when the interchangeable inner member moves, and a movement of the interchangeable inner member may be prevented when the first guide pin is caught at a rear end of the elongated hole.The interchangeable inner member may include a fixed block provided at its lower portion, the bottom frame may include a fixed block guide provided in an area corresponding to a point at which the fixed block is provided, and the fixed block may be loaded on the fixed block guide and move from the loading point to the seating point by sliding along the fixed block guide.The fixed block guide may have a moving space defined therein configured to allow the fixed block to slide and be moved therein, the magnet module may be provided at a lower part of the moving space, and the magnet module may be fixed to the fixed block moving toward the seating point to fix the fixed block.The fixed block guide may have a side magnet module provided on a side thereof and spaced a predetermined distance from the fixed block guide, and the side magnet module may be inserted into the fixed block in a width direction of the vehicle when the fixed block is fixed to the seating point by the magnet module, thereby further fixing the fixed block.The fixed block guide and the side magnet module may be provided at the upper portion of the floor frame, the interchangeable inner member may have a recessed portion provided at its lower portion and shaped to be recessed inward to cover the fixed block guide and the side magnet module, and the recessed portion may have a reinforcing bracket provided at its inner surface.The side magnet module may include a mounting part including a permanent magnet and a coil, and a second guide pin formed to extend from one side of the mounting part in the width direction of the vehicle, the fixed block may have a first through hole formed to penetrate opposite sides thereof, and the second guide pin of the side magnet module may be inserted into the first through hole of the fixed block to further fix the fixed block.The fixed block guide may include a second through hole formed on one side of opposite sides thereof, the side magnet module is disposed on the one side, an end of the second guide pin of the side magnet module may be disposed in the second through hole, and the first through hole and the second through hole may be aligned on a same line when the fixed block moves to the seating point such that the second guide pin may be inserted into the first through hole.The attachment may move, when the first through hole and the second through hole are aligned on the same line, by the magnetic force of the permanent magnet to contact the one side of the fixed block guide, and the permanent magnet of the attachment may selectively generate a magnetic field corresponding to a current flow flowing through the coil, whereby the fixed block guide and the attachment may be selectively fixed to each other or separated from each other.The one side on which the second through hole of the fixed block guide is formed may have a guide plate provided thereon, one end of the guide plate may be connected to the one side and configured to cover the second guide pin of the side magnet module, and the second guide pin may move along the guide plate to be inserted into the first through hole.The one side of the interchangeable inner member may move toward a pillar member of the fixed inner member when the lower part of the interchangeable inner member slides and moves from the loading point to the seating point.The magnet module may be provided in either one of the one side of the interchangeable inner part and the column member of the fixed inner part, wherein a seat part may be provided in the other side and configured to allow the magnet module to be seated thereon, and the magnet module may be seated on the seat part when the one side of the interchangeable inner part moves toward the column member of the fixed inner part, whereby the one side of the interchangeable inner part may be fixed to the column member of the fixed inner part.The magnetic module may include a protrusion formed at an end thereof, the end may be seated on the seat part, the seat part may include an insertion hole formed therein configured to allow the protrusion to be inserted therein, and the protrusion to be inserted into the insertion hole when the one side of the interchangeable inner part is mounted on the pillar member of the fixed inner part, thereby fixing a seating position of the magnetic module.The vehicle body may also include a controller connected to the magnet module and configured to determine whether the magnet module is fixed between the interchangeable inner member and the floor frame or between the interchangeable inner member and the fixed inner member.The magnet module may include a magnetic flux sensor, the magnetic flux sensor may measure a magnitude and a direction of the magnetic flux flowing through the magnet module according to the current flowing through the coil, and the controller may be connected to the magnetic flux sensor and determine whether the magnet module is fixed based on the information measured by the magnetic flux sensor.BRIEF DESCRIPTION OF THE DRAWING FIGURESThe above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawing figures, in which: FIG. 1 is a view showing a configuration of a vehicle body according to an embodiment of the present disclosure; FIG. 2 is a perspective view showing a magnetic module provided in the vehicle body according to the embodiment of the present disclosure;FIGS. 3 and 4 are views showing attachment and detachment by the magnet module according to the embodiment of the present disclosure; FIG. 5 is a view showing a floor frame of the vehicle body according to the embodiment of the present disclosure in plan view; FIG. 6 is a cross-sectional view taken along line I-I in FIG. 5 ; FIG. 7 is an enlarged view of a part "A" in FIG. 6 ; FIG. 8 is a cross-sectional view taken along line II-II in FIG. 7 ; FIGS. 9A and 9B are cross-sectional views taken along the line III-III in FIG. 7 ; FIG. 10 is a cross-sectional view taken along line IV-IV in FIG. 5 ; FIG. 11 is a view showing, as viewed from behind, a fixed inner part of the vehicle body according to the embodiment of the present disclosure; FIG. 12 is a cross-sectional view taken along line V-V in FIG. 11 ; FIG. 13 is a cross-sectional view taken along line VI-VI in FIG. 11 ; and FIG. 14 is a flowchart showing an assembling process of a replaceable inner part according to the embodiment of the present disclosure.DETAILED DESCRIPTIONWhen it is determined in the description of the embodiments disclosed herein that a detailed description of publicly known techniques to which the disclosure relates might obscure the gist of the present disclosure, the detailed description is omitted. Further, it should be noted that the accompanying drawing figures are merely set forth to easily describe the embodiments disclosed in this specification, and therefore, the technical idea disclosed in this specification is not limited by the accompanying drawing figures. Further, it should be noted that the accompanying drawing figures include all modifications, equivalents, and substitutes that fall within the spirit and technical scope of the present disclosure.In the present disclosure, terms such as "first" and / or "second" may be used to describe various components, but the components are not limited by these terms. The terms are used only to distinguish one component from other components.When a component is referred to as being "connected" or "joined" to another component, the one component may be directly connected or joined to the other component, but it is understood that other components may be present therebetween. On the other hand, when a component is referred to as being "directly with" or "in direct contact with" another component, it is to be understood that there are no other components therebetween.In this specification, a term in the singular also includes the plural, unless the context clearly indicates otherwise.Terms such as "comprising" and "having" in this specification are intended to refer to the presence of stated features, numbers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more features, numbers, steps, operations, components, parts, or combinations thereof.To control various functions, a controller may include a communication device configured to communicate with another controller or sensor, a memory configured to store an operating system, a logical command, and input / output information, and one or more processors configured to perform the determinations, calculations, and the like necessary to control a corresponding function.Hereinafter, the present disclosure will be described in detail by preferred embodiments with reference to the accompanying drawing figures. Wherever possible, the same reference numbers will be used in the drawing figures to refer to the same or like parts, and redundant descriptions will be omitted.First, a vehicle body according to an embodiment of the present disclosure will be described with reference to FIG. 1.FIG. 1 is a view showing a configuration of the vehicle body according to the embodiment of the present disclosure.Referring to FIG. 1, the vehicle body according to the embodiment of the present disclosure may include a floor frame 100, a fixed inner 200, and a replaceable inner 300.As illustrated in FIG. 1, the floor frame 100 may be provided with vehicle driving parts (not illustrated) and wheels. The fixed inner member 200 may be mounted on and fixed to the floor frame 100. Also, the replaceable inner member 300 has a lower portion detachably fixed to the bottom frame 100. Here, one side of the interchangeable inner member 300 may be detachably attached to the fixed inner member 200 such that the interchangeable inner member 300 is interchangeable depending on the intended use of a vehicle.In the prior art, a mechanical fastening method is used in separating the replaceable inner part 300 from the bottom frame 100 or in mounting thereon. However, in the case of the mechanical fastening method, additional labor is required when the assembly is performed to separate the interchangeable inner 300 from the floor frame 100 or to attach the interchangeable inner 300 thereto. In addition, since the mounting parts are frequently separated or attached, there is a problem that the durability of the mounting parts deteriorates.To solve this problem, the vehicle body of the present disclosure may further include a magnet module 400. The magnet module 400 may be provided between the interchangeable inner part 300 and the bottom frame 100, or between the interchangeable inner part 300 and the fixed inner part 200. Here, the fixing force may be applied to the replaceable inner part 300 in a targeted manner depending on a current flowing through a coil. The magnet module 400 will be described in detail with reference to FIGS. 2 to 4.FIG. 2 is a perspective view showing the magnet module provided in the vehicle body according to the embodiment of the present disclosure, and FIGS. 3 and 4 are views showing the attachment and detachment by the magnet module according to the embodiment of the present disclosure.First, the magnet module 400 according to the embodiment of the present disclosure (see FIG. 2 ) may include permanent magnets 410 and 420 and a coil 430. A plurality of permanent magnets 410 and 420 may be provided, which may be formed of, for example, a square magnet 410 and a circular magnet 420. Current may be applied to the coil 430 of the magnet module 400. When current is applied thereto, an external object in contact with the magnet module 400 and the permanent magnets 410 and 420 selectively generates a magnetic field depending on a current flowing through the coil 430, whereby the magnet module 400 and the external object can be selectively fixed to each other or separated from each other.For example, the magnet module 400 may be accommodated in one of the interchangeable inner part 300 and the bottom frame 100, and the other serving as an external object may be attached to or detached from the magnet module 400. In addition, the magnet module 400 may be provided in one of the replaceable inner part 300 and the fixed inner part 200, and the other serving as an external object may be fixed to or separated from the magnet module 400. The detailed attachment and detachment of the magnet module 400 will be described with reference to FIGS. 3 and 4.FIG. 3 is a view showing the magnet module 400 in a state of being fixed to an external object (e.g., the floor frame 100 or the fixed inner member 200). Referring to FIG. 3, the square magnet 410 of the magnet module 400 may be provided with fixed magnetic poles, and the circular magnet (round magnet) 420 may be rotatably provided. When the magnet module 400 is fixed to the external object (the bottom frame 100 or the fixed inner member 200), a magnetic field is generated in the magnet module 400 due to the current applied to the coil 430. Accordingly, the round magnet 420 can be rotated such that the same magnetic poles of the round magnet 420 and the square magnet 410 are opposed to each other.As shown in FIG. 3, a magnetic path can be generated in the magnet module 400 by the arrangement of the magnetic poles of the square magnet 410 and the round magnet 420. The magnetic path enables reliable attachment of the magnet module 400 to the external object (the floor frame 100 or the fixed inner member 200) by strong contact with the external object.FIG. 4 is a view showing the magnet module 400 in a state separated from the external object (the floor frame 100 or the fixed inner member 200). When the magnet module 400 is separated from the external object (the bottom frame 100 or the fixed inner member 200), the round magnet 420 may be rotated by changing the current applied to the coil 430 (see FIG. 4 ). In this case, the round magnet 420 can be rotated in such a way that the different magnetic poles of the round magnet 420 and of the square magnet 410 are located opposite one another.As illustrated in FIG. 4, a magnetic path can be generated in the magnet module 400 by the magnetic pole arrangement of the square magnet 410 and the round magnet 420. The fastening force applied from the magnet module 400 to the external object (the bottom frame 100 or the fixed inner member 200) can be canceled by the generated magnetic path. Accordingly, the magnet module 400 can be separated from the external object (the floor frame 100 or the fixed inner member 200).Meanwhile, as illustrated in FIG. 2, the vehicle body may include a controller 500 connected to the magnet module 400 and configured to determine whether the magnet module 400 is fixed between the interchangeable inner 300 and the floor frame 100, or between the interchangeable inner 300 and the fixed inner 200. When a plurality of magnet modules 400 are provided, a plurality of controllers 500 corresponding to the number of magnet modules 400 may be provided, or the controller 500 may be provided as a single unit connected to a plurality of magnet modules.As illustrated in FIG. 2, the magnet module 400 may include a magnetic flux sensor 440 configured to measure the magnitude and direction of the magnetic flux flowing through the magnet module 400 according to the current flowing through the coil 430. The controller 500 may be connected to the magnetic flux sensor 440 and determine whether the magnetic module 400 is fixed based on the information measured by the magnetic flux sensor 440.Next, the attachment (mounting) of the interchangeable inner member 300 will be described with reference to FIGS. 5 to 13 in accordance with the above-described configuration.First, an assembly process between the interchangeable inner 300 and the bottom frame 100 will be described with reference to FIGS. 5 to 10.FIG. 5 is a plan view showing the floor frame of the vehicle body according to the embodiment of the present disclosure.First, referring to FIG. 5, the interchangeable inner 300 may be mounted on the floor frame 100. In particular, the lower part of the interchangeable inner part 300 may be fixed on the upper part of the floor frame 100. In this case, a plurality of magnet modules 400 may be provided spaced apart from each other along the edge of the interchangeable inner part 300 or the edge of the floor frame 100.When the lower part of the interchangeable inner 300 is loaded on the upper part of the floor frame 100, the interchangeable inner 300 slides and moves from a loading point to a seating point located in front of the loading point, and the lower part of the interchangeable inner 300 and the floor frame 100 can be fixed to the seating point by the magnet module 400. This operation will be described with reference to Figs. 6 to 10.FIG. 6 is a cross-sectional view taken along line I-I in FIG. 5, FIG. 7 is an enlarged view of part "A" in FIG. 6, FIG. 8 is a cross-sectional view taken along line II-II in FIG. 7, FIGS. 9A and 9B are cross-sectional views taken along line III-III in FIG. 7, and FIG. 10 is a cross-sectional view taken along line IV-IV in FIG. 5.Referring to FIG. 6, the floor frame 100 may be provided with a first guide pin 110 formed to protrude upward therefrom, and the interchangeable inner 300 may be provided with an elongated hole (not shown) formed at its lower portion and located in a range corresponding to a location where the first guide pin 110 is provided. When the lower part of the interchangeable inner part 300 is loaded on the bottom frame 100, the first guide pin 110 can be inserted into the elongated hole. When the replaceable inner part 300 moves, the inserted first guide pin 110 can move along the elongated hole. As the replaceable inner 300 moves, the first guide pin 110 may be captured at the rear end of the slot, thereby preventing movement of the replaceable inner 300.Moreover, the replaceable inner member 300 may include a fixed block 310 provided at its lower portion. Specifically, the floor frame 100 may include a fixed block guide 120 provided at its upper part and located in an area corresponding to a point where the fixed block 310 is provided. For example, when the lower part of the interchangeable inner part 300 is loaded onto the upper part of the floor frame 100, the fixed block 310 may be loaded onto the guide of the fixed block 120.When the interchangeable inner 300 moves from the loading point at which the lower part of the interchangeable inner 300 is loaded on the upper part of the floor frame 100 to the seating point, the fixed block 310 may move by sliding along the guide of the fixed block 120 (see FIG. 7 ). In this way, the replaceable inner part 300 can slide and move. For example, a clearance may be provided in the guide of the fixed block 120 to allow the fixed block 310 to move in the guide of the fixed block 120, and an inclined surface may be formed in the clearance. Accordingly, the fixed block 310 can slide and move along the inclined surface formed on the guide of the fixed block 120 due to the gravity.As illustrated in FIG. 8, the magnet module 400 may be attached to the lower part of the inclined surface of the fixed block guide 120. The magnet module 400 may be fixed to the fixed block 310 that slides along the inclined surface and moves to the seating point. In this case, the magnet module 400 is fixed to the fixed block 310, and the interchangeable inner 300 may be attached to the floor frame 100. Since the mounting of the magnet module 400 has been described in detail with reference to FIGS. 3 and 4, no further details will be given here.In addition, when the fixed block 310 is fixed by the magnet module 400, the fixed block 310 may be fixed by a side magnet module 600. For example, the side magnet module 600 may be inserted into the fixed block 310 in the width direction of the vehicle, whereby the fixed block 310 may be additionally fixed. The above-described fixing operation will be described with reference to FIGS. 9A and 9B.Referring to FIGS. 9A and 9B, the side magnet module 600 may be provided on the fixed block guide 120 side and disposed at a predetermined distance from the fixed block guide 120. The lateral magnet module 600 may include a mounting portion 610 and a second guide pin 620. The attachment part 610 may include permanent magnets and a coil. For example, the fixing part 610 has the same configuration as the magnet module 400 and can perform the same function. However, this configuration is only an example and is not necessarily limited thereto.In addition, the second guide pin 620 may extend from the side of the fixing part 610 in the vehicle width direction. The second guide pin 620 may be inserted into the fixed block 310 to fix the fixed block 310. To this end, the fixed block 310 may include a first through hole TH 1 formed to penetrate the opposite sides of the fixed block 310.Moreover, a second through hole TH 2 may be formed on one side of the opposite sides of the fixed block guide 120, and the side magnet module 600 is disposed on the one side of the fixed block guide 120. Referring to FIG. 9A, one end of the second guide pin 620 of the side magnet module 600 may be disposed at the second through hole TH 2, that is, the second guide pin 620 may be disposed at the second through hole TH 2 without being inserted into the fixed block 310 until the fixed block 310 is fixed.Subsequently, when the fixed block 310 is fixed by the magnet module 400 provided at the lower part of the fixed block guide 120 as shown in FIG. 9B, the second guide pin 620 of the side magnet module 600 may be inserted into the first through hole TH 1 of the fixed block 310. When the fixed block 310 is fixed by the magnet module 400, the first through hole TH 1 of the fixed block 310 and the second through hole TH 2 of the fixed block guide 120 may be aligned on the same line, thereby forming a passage through which the second guide pin 620 may move. Accordingly, the end of the second guide pin 620 can be inserted into the fixed block 310 by moving it from the second through hole TH 2 to the first through hole TH 1.When the first through hole TH 1 and the second through hole TH 2 are aligned on the same line, the fixing part 610 of the side magnet module 600 may move toward the fixed block guide 120 by the magnetic force of the permanent magnets included in the fixing part 610, thereby contacting the fixed block guide 120 side. In addition, the permanent magnets of the fixing part 610 selectively generate a magnetic field according to a current flow through the coil included in the fixing part 610, whereby the fixed block guide 120 and the fixing part 610 can be selectively fixed to each other or separated from each other.In addition, as illustrated in FIGS. 9A and 9B, a guide plate P may be provided on the fixed block guide 120 side in which the second through hole TH 2 is formed on the side. One end of the guide plate P can be connected to the fixed block guide side 120 in which the second through hole TH 2 is formed, thereby covering the second guide pin 620 of the side magnet module 600. Accordingly, the second guide pin 620 may move along the guide plate P to be inserted into the first through hole TH 1 of the fixed block 310.As shown in FIG. 9B, a spring S may be connected to the end of the second guide pin 620. When the fixing part 610 moves to the fixed block guide 120 side and is fixed to the fixed block guide 120, the spring S may be expanded and generate an elastic force. However, at this time, the fastening force between the fastening part 610 and the fixed block guide 120 is stronger than the elastic force that allows the spring S to return to its original shape, whereby the fastening part 610 can be held in contact with the fixed block guide 120. When the fastening force between the fastening part 610 and the guide of the fixed block 120 disappears, the spring S can move the second guide pin 620 of the side magnet module 600 rearward by utilizing the elastic force that allows the spring S to return to its original shape. As a result, a coupling state between the side magnet module 600 and the fixed block 310 can be released.As illustrated in FIG. 10, the fixed block guide 120 and the side magnet module 600 may be attached to the upper part of the floor frame 100. Accordingly, interference may occur when the replaceable inner 300 is loaded onto the floor frame 100. To solve this problem, the interchangeable inner 300 has a recessed portion 320 formed at its lower part and configured to cover the guide of the fixed block 120 and the side magnet module 600. Moreover, the fixed block 310 is provided in the recessed portion 320, whereby it is possible to perform coupling between the fixed block 310 and the guide of the fixed block 120 or the fixed block 310 and the side magnet module 600 in the recessed portion 320. Therefore, it is necessary to secure sufficient rigidity and strength of the recessed portion 320. For this purpose, a reinforcing bracket 330 may be provided on the inner surface of the recessed portion 320 formed to be recessed inward. The rigidity and strength of the recessed portion 320 can be secured by the reinforcing bracket 330.When the interchangeable inner part 300 is mounted on the floor frame 100, the magnet module 400 and the side magnet module 600 may also allow the interchangeable inner part 300 and the floor frame 100 to be fixed to each other at an adjacent point of a location where the fixed inner part 200 of the floor frame 100 is mounted, at a rear point of the floor frame 100, and at an intermediate point between the adjacent point and the rear point (see FIG. 5 ). For example, when the interchangeable inner part 300 is seated on the bottom frame 100, the magnet module 400 and the side magnet module 600 provided at the adjacent point may first fix the bottom frame 100 and the interchangeable inner part 300. Thereafter, the magnet module 400 and the side magnet module 600 provided at the rear point may fix the bottom frame 100 and the interchangeable inner 300. When the magnet module 400 and the side magnet module 600 are fixed at the adjacent point and the rear point, the magnet module 400 and the side magnet module 600 may fix the bottom frame 100 and the interchangeable inner 300 at the intermediate point between the adjacent point and the rear point. However, it should be understood that this is an example and the present disclosure is not necessarily limited thereto. For example, it is possible to change the order of the points at which the bottom frame 100 and the interchangeable inner member 300 are fixed to each other. According to the order of the adjacent point, the rear point, and the intermediate point, the magnet module 400 may first fix the bottom frame 100 and the interchangeable inner member 300, and then the side magnet module 600 may additionally fix the bottom frame 100 and the interchangeable inner member 300.The installation between the replaceable inner part 300 and the fixed inner part 200 will be described below with reference to FIGS. 11 to 13.FIG. 11 is a view showing, as viewed from behind, the fixed inner part of the vehicle body according to the embodiment of the present disclosure.First, the replaceable inner part 300 may be fixed to the fixed inner part 200 (see FIG. 11 ). In particular, one side of the replaceable inner part 300 may be attached to at least one pillar member of the fixed inner part 200. In this case, a plurality of magnetic modules 400 may be provided spaced apart from each other along the edge of the replaceable inner part 300 or the edge of the fixed inner part 200.When the lower part of the interchangeable inner part 300 is loaded on the upper part of the floor frame 100, and then the interchangeable inner part 300 moves by sliding from the loading point to the seating point, one side of the interchangeable inner part 300 moves toward the fixed inner part 200 to contact it, and one side of the interchangeable inner part 300 and the fixed inner part 200 can be fixed to each other by the magnet module 400. This fastening operation will be described with reference to FIGS. 12 and 13.Referring to FIGS. 12 and 13, the magnet module 400 may be provided in one side of the interchangeable inner part 300 or in a pillar member 210 of the fixed inner part 200, and the other side may have a seat part provided therein and configured to allow the magnet module 400 to be seated thereon. In the following description, for example, it is assumed that the magnet module 400 is mounted in one side of the interchangeable inner part 300 and a seat part 220 is provided in the pillar member 210 of the fixed inner part 200.When the interchangeable inner part 300 is mounted on the bottom frame 100 and moves by sliding the bottom frame 100, one side of the interchangeable inner part 300 may move toward the pillar member 210 of the fixed inner part 200. Since the magnet module 400 is mounted on one side of the interchangeable inner part 300, one side of the interchangeable inner part 300 moving toward the column member 210 may contact the column member 210 through the magnet module 400. Subsequently, the interchangeable inner 300 may selectively apply a fastening force to the pillar member 210 according to a current flowing through the coil 430 of the magnet module 400. Since this operation has been described above with reference to FIGS. 3 and 4, a description thereof will be omitted.Moreover, the magnet module 400 may include a protrusion 450 formed at an end of the module, the end being seated on the receiving part 220. The receiving part 220 may include an insertion hole IH configured to allow the protrusion 450 to be inserted therein. According to this configuration, when one side of the interchangeable inner part 300 moves toward the pillar member 210 of the fixed inner part 200, the protrusion 450 may move along the seat part 220 to be inserted into the insertion hole IH, and the seating position of the magnet module 400 may be fixed when the protrusion 450 is inserted into the insertion hole IH.When the interchangeable inner 300 is mounted on the fixed inner 200, the magnet module 400 allows the interchangeable inner 300 and the fixed inner 200 to be fixed to each other at a lower point of the pillar member 210 of the fixed inner 200, at an upper point thereof, and at an intermediate point between the lower point and the upper point (see FIG. 11 ). For example, when the interchangeable inner part 300 is seated on the fixed inner part 200, the magnet module 400 provided at the lower point may first fix the fixed inner part 200 and the interchangeable inner part 300. Thereafter, the upper point magnet module 400 may fix the fixed inner member 200 and the replaceable inner member 300. When the magnet module 400 is attached at the upper and lower points, the magnet module 400 may attach the fixed inner member 200 and the replaceable inner member 300 at the intermediate point between the upper point and the lower point. However, it should be understood that this method is an example, and the present disclosure is not necessarily limited thereto. For example, it is possible to change the order of attachment of the fixed inner part 200 and the interchangeable inner part 300.Next, the mounting operation of the interchangeable inner 300 according to the present embodiment will be described with reference to FIG. 14. In FIG. 14, for example, it is assumed that control logic is executed in the above-described control device 500.FIG. 14 is a flowchart showing the assembling process of the interchangeable inner part according to the embodiment of the present disclosure.Referring to FIG. 14, when the interchangeable core 300 is loaded and seated (Yes in S 1401), the controller 500 may allow current to be applied to the magnet module 400 disposed between the fixed core 200 and the interchangeable core 300. (S1402). After the magnet module is energized, the controller 500 may determine whether the magnet module 400 is fixed using the magnetic flux sensor 440 of the magnet module 400 (S 1403). When the magnet module 400 is fixed (Yes in S 1403), the controller 500 may allow power to be applied to the magnet module 400 between the bottom frame 100 and the interchangeable inner 300 (S 1404).After the application of current, the controller 500 may determine whether the magnet module 400 is fixed using the magnetic flux sensor 440 of the magnet module 400 (S 1405). When the magnet module 400 is fixed (Yes in S 1405), the controller 500 may determine whether the side magnet module 600 is fixed by applying current to the side magnet module 600 (S 1406). When the attachment of the side magnet module 600 is completed (Yes in S 1406), the controller 500 may determine that the interchangeable inner part 300 is normally connected to the bottom frame 100 and the fixed inner part 200 (S 1407).On the other hand, when the magnet module 400 is not fixed (No in S 1403, No in S 1405, and No in S 1406), the controller 500 may determine that there is a problem with the coupling therebetween, and output an error message (S 1408). Thereafter, based on the failure message (S 1409), the controller 500 may check a portion where the magnet module 400 or the side magnet module 600 is not fixed. The controller 500 may supply power to the magnet module 400 or the side magnet module 600 located in the inspected section again (S 141). After the power supply is again conducted, the controller 500 determines whether the magnet module 400 or the side magnet module 600 is fixed (S 1411). When the magnet module 400 or the side magnet module 600 is fixed (Yes in S 1411), the controller 500 may determine that the interchangeable inner part 300 is normally coupled to the bottom frame 100 and the fixed inner part 200 (S 1407).FIG. 14 shows that step S 1404 is performed after step S 1402, but it goes without saying that this method is an example and the present disclosure is not necessarily limited thereto. For example, step S 1404 may be performed first and then step S 1402 may be performed.According to the above description, a replaceable inner part of a vehicle body of the present disclosure is easily separable and replaceable by a magnet module.Moreover, the deformation of the vehicle body at a mounting location can be minimized by the magnet module.Moreover, in the present disclosure, a mounting structure using not only the magnet module but also a plurality of guide pins is used, whereby it is possible to secure the fastening force of the interchangeable inner member and minimize the mounting tolerance.As is apparent from the above description, the present disclosure provides a vehicle body having a magnetic module configured to allow a replaceable inner part to be easily separated and replaced.In addition, the magnet module is used to minimize deformation of the vehicle body at a mounting point.Moreover, in the present disclosure, a mounting structure using a plurality of guide pins and the magnet module is used, whereby it is possible to secure the fastening force of the interchangeable inner member and minimize the mounting tolerance.The effects of the present disclosure are not limited to the above-mentioned effects, and other non-mentioned effects will be clearly understood by those skilled in the art from the detailed description of the embodiments.Although the preferred embodiments of the present disclosure have been disclosed for illustrative purposes, those skilled in the art will appreciate that various changes, additions and substitutions are possible, without departing from the scope and spirit of the disclosure as disclosed in the appended claims.The present disclosure is implementable as computer readable code on a medium on which a program is recorded. A computer readable medium includes all types of recording devices that store data that can be read by a computer system. Examples of the computer readable media include a hard disk drive (HDD), a solid state drive (SSD), a silicon disk drive (SSD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like. Accordingly, the above detailed description should not be interpreted in any way in a limiting sense and should be considered descriptive. The scope of the present disclosure should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present disclosure are included in the scope of the present disclosure.
Claims
A vehicle body, comprising: a floor frame configured to allow driving parts of a vehicle and wheels of the vehicle to be mounted on the floor frame; a fixed inner part mounted and fixed to the floor frame; a replaceable inner part having a lower portion detachably mounted on the floor frame and having a side detachably mounted on the fixed inner part, the replaceable inner part being replaceable depending on a use of the vehicle; and a magnet module disposed between the replaceable inner part and the floor frame or between the replaceable inner part and the fixed inner part, the magnet module configured to selectively apply a fastening force to the replaceable inner part according to a current flow flowing through a coil.The vehicle body according to claim 1, wherein the magnet module includes a permanent magnet and the coil, and an external object in contact with the magnet module and the permanent magnet generates a magnetic field according to the current flow through the coil, whereby the magnet module and the external object are fixable to each other or separable from each other.The vehicle body according to claim 2, wherein the magnet module is positioned in one of the interchangeable inner member and the floor frame, and the other of the interchangeable inner member and the floor frame serving as an external object is fixed to the magnet module or separated from the magnet module.The vehicle body according to claim 2, wherein the magnet module is disposed in one of the interchangeable inner part and the fixed inner part, and the other of the interchangeable inner part and the fixed inner part serving as an outer object is fixed to the magnet module or separated from the magnet module.Vehicle body according to claim 1, characterized in that a plurality of magnet modules are provided, which are spaced apart from each other along an edge of the floor frame, the fixed inner part or the replaceable inner part.The vehicle body of claim 1, wherein the interchangeable inner slides and moves from a loading point to a seating point located forward of the loading point in response to the lower portion of the interchangeable inner being loaded onto an upper portion of the floor frame, and the lower portion of the interchangeable inner and the floor frame are secured together at the seating point by the magnet module.The vehicle body according to claim 6, wherein the floor frame includes a first guide pin protruding upward from the floor frame, the interchangeable inner member includes an elongated hole provided at the lower portion of the interchangeable inner member, the elongated hole being disposed in a region corresponding to a point with the first guide pin, the first guide pin is inserted into the elongated hole when the lower portion of the interchangeable inner member is loaded on the floor frame, the inserted first guide pin moves along the elongated hole when the interchangeable inner member moves, and movement of the interchangeable inner member is prevented when the first guide pin is caught at a rear end of the elongated hole.The vehicle body according to claim 6, wherein the interchangeable inner member includes a fixed block provided at the lower portion, the floor frame includes a fixed block guide provided in an area corresponding to a point with the fixed block, and the fixed block is loaded on the fixed block guide and moves from the loading point to the seating point by sliding along the fixed block guide.The vehicle body according to claim 8, wherein the fixed block guide has a moving space defined therein, configured to allow the fixed block to be displaceable and movable within the moving space, wherein the magnet module is provided at a lower portion of the moving space, and the magnet module is fixed to the fixed block moving to the seating point to fix the fixed block.The vehicle body according to claim 9, wherein the fixed block guide includes a side magnet module provided on a side of the fixed block guide and disposed at a predetermined distance from the fixed block guide, and the side magnet module is inserted into the fixed block in a width direction of the vehicle when the fixed block is fixed by the magnet module at the seating point, thereby further fixing the fixed block.The vehicle body according to claim 10, wherein the fixed block guide and the side magnet module are provided at the upper portion of the floor frame, the interchangeable inner member has a recessed portion provided at the lower portion and recessed inward to cover the fixed block guide and the side magnet module, and the recessed portion has a reinforcing bracket provided at an inner surface.The vehicle body according to claim 10, wherein the side magnet module includes a fixing part including a permanent magnet and a coil, and a second guide pin extending from one side of the fixing part in the width direction of the vehicle, the fixed block has a first through hole formed to penetrate opposite sides, and the second guide pin of the side magnet module is inserted into the first through hole of the fixed block to further fix the fixed block.The vehicle body according to claim 12, wherein the fixed block guide includes a second through hole formed on one side of the opposite sides, the side magnet module is disposed on the one side, an end of the second guide pin of the side magnet module is disposed in the second through hole, and the first through hole and the second through hole are aligned on a same line when the fixed block moves to the seating point to allow the second guide pin to be inserted into the first through hole.The vehicle body according to claim 13, wherein when the first through hole and the second through hole are aligned on the same line, the attachment moves to contact the one side of the fixed block guide by the magnetic force of the permanent magnet, and the permanent magnet of the attachment generates a magnetic field corresponding to a current flow flowing through the coil, whereby the fixed block guide and the attachment can be fastened to or separated from each other.The vehicle body according to claim 13, wherein the one side having the second through hole of the fixed block guide includes a guide plate, one end of the guide plate is connected to the one side and configured to cover the second guide pin of the side magnet module, and the second guide pin moves along the guide plate to be inserted into the first through hole.The vehicle body according to claim 6, wherein the one side of the interchangeable inner member moves toward a pillar member of the fixed inner member when the lower portion of the interchangeable inner member slides and moves from the loading point to the seating point.The vehicle body according to claim 16, wherein the magnet module is positioned in one of the one side of the interchangeable inner part and the column member of the fixed inner part, wherein the other of the interchangeable inner part and the column member has a seat part configured to allow the magnet module to be seated thereon, and wherein the magnet module is seated on the seat part when the one side of the interchangeable inner part moves toward the column member of the fixed inner part, whereby the one side of the interchangeable inner part can be fixed to the column member of the fixed inner part.The vehicle body according to claim 17, wherein the magnet module has a protrusion formed at one end, the end being seated on the seat part, the seat part has an insertion hole configured to allow the protrusion to be inserted therein, and the protrusion is inserted into the insertion hole when the one side of the interchangeable inner part is mounted on the pillar member of the fixed inner part, thereby fixing a seating position of the magnet module.The vehicle body of claim 1, further comprising a controller connected to the magnet module and configured to determine whether the magnet module is fixed between the interchangeable inner part and the floor frame or between the interchangeable inner part and the fixed inner part.The vehicle body according to claim 19, wherein the magnetic module includes a magnetic flux sensor, the magnetic flux sensor is configured to measure a magnitude and a direction of the magnetic flux flowing through the magnetic module according to the flux of the current flowing through the coil, and the controller is connected to the magnetic flux sensor and configured to determine whether the magnetic module is fixed based on information measured by the magnetic flux sensor.