front cross beam

Abstract

A front cross beam includes a main pipe configured to be disposed at a front cross of a vehicle in a transverse direction, and a matching portion formed at a lower end portion of the main pipe, a support pipe including a coupling portion matched with the matching portion of the main pipe, the support pipe being coupled to the main pipe to support the main pipe, and a connecting portion in contact with the matching portion and the coupling portion to form a support structure, wherein the connecting portion is disposed at the matching portion and the coupling portion, respectively, and has a support surface arranged in a direction in which the matching portion and the coupling portion are matched with each other. The front cross beam of the present application can achieve light weight, easy manufacturing and maintenance, and ensure rigidity.

Description

Technical Field

[0001] This invention relates to a front crossbeam that is lightweight, easy to manufacture and maintain, and ensures rigidity. Background Technology

[0002] The body of a vehicle typically consists of side frames and several crossbeams that connect the side frames laterally.

[0003] In the crossbeams, the front bulkhead crossbeam is a structure mounted laterally in the passenger compartment, behind the front bulkhead, to enhance the rigidity of the front of the vehicle body. The front bulkhead crossbeam supports the steering column and is designed to have sufficient rigidity to absorb vibrations transmitted from the steering column.

[0004] A support leg is attached to the lower part of the central section of the front bulkhead crossbeam to support the crossbeam. This support leg is used to transmit vibrations from the steering equipment to the lower part of the vehicle body.

[0005] Meanwhile, the support legs, side connectors, and various brackets that are attached to the front crossbeam are manufactured by stamping, extrusion, casting, etc., and then welded to the front crossbeam.

[0006] This increases the manufacturing process, adds weight due to the need for individual welding, and limits the ability to achieve reliable rigidity due to weld tearing.

[0007] The foregoing description of the background art is intended to help the reader better understand the present invention. This subject matter is not intended to constitute a declaration of abandonment of prior art known to those skilled in the art. Summary of the Invention

[0008] The present invention aims to provide a front crossbeam that is lightweight, easy to manufacture and maintain, and ensures rigidity.

[0009] The technical problems to be solved in this invention are not limited to those described above. Those skilled in the art should more clearly understand other problems not mentioned herein through the following description.

[0010] To achieve the above objectives, one embodiment of the present invention provides a front bulkhead crossbeam. The front bulkhead crossbeam includes: a main tube, laterally disposed at the front bulkhead of a vehicle, and having a mating portion formed at a lower portion of the main tube. The front bulkhead crossbeam further includes: a support tube, including a connecting portion that mates with the mating portion of the main tube, the support tube being configured to support the main tube when connected to the main tube. The front bulkhead crossbeam further includes: a connecting portion, providing a support structure when in contact with the mating portion and the connecting portion. The connecting portion may be disposed at the mating portion and the connecting portion respectively, and has a support surface arranged in a direction in which the mating portion and the connecting portion mate with each other.

[0011] In one embodiment, the main channel may include a first channel portion having a forward-projecting curved cross-sectional shape, and a second channel portion extending from the lower portion of the first channel portion into a rearward-projecting portion. A mating portion may be disposed at the lower end of the second channel portion.

[0012] In one embodiment, the cross-sectional shape of the joint of the support tube may include a front wall located in the central part and a side wall that bends backward from the end of the front wall.

[0013] In one embodiment, the connecting portion may include a first support end that extends from the mating portion and contacts both ends of the front wall of the connecting portion excluding the central portion, and contacts the side wall.

[0014] In one embodiment, the first support end may extend forward from the mating portion.

[0015] In one embodiment, the mating portion may include a rib that is connected to the upper surface of the first support end and supports the first support end.

[0016] In one embodiment, the connecting portion may include a second support end that extends from the central portion of the front wall of the connecting portion and contacts the mating portion.

[0017] In one embodiment, the second support end may extend rearward from the front wall of the joint.

[0018] In one embodiment, the cross-sectional shape of the support tube may include a front wall located at the center and a side wall that curves rearward from one end of the front wall. The lower portions of the front wall and the side wall may be closed to form or define a double flange for securing the front bulkhead crossbeam to the vehicle body.

[0019] In one embodiment, a reinforcing plate may be provided on the front or back of the joint between the mating part of the main tube and the support tube. The reinforcing plate may be fixed to the support tube by fasteners.

[0020] Meanwhile, according to another embodiment of the present invention, a front bulkhead crossbeam is provided. The front bulkhead crossbeam includes: a main tube, laterally disposed at the front bulkhead of the vehicle, and having a mating portion formed at a lower portion of the main tube. The front bulkhead crossbeam further includes: a support tube having a connecting portion that mates with the mating portion of the main tube. The support tube is configured to support the main tube when engaged with the main tube. The front bulkhead crossbeam further includes: a connecting portion, providing a support structure and contacting the mating portion and the connecting portion. The connecting portion may be configured to partially cover the mating portion and the connecting portion, and to join the mating portion and the connecting portion together.

[0021] In one embodiment, the main channel may include a first channel portion having a forward-curving cross-sectional shape, and a second channel portion extending from the lower portion of the first channel portion into a rearward-protruding section. A mating portion may be disposed at the lower end of the second channel portion.

[0022] In one embodiment, the connection may include: a first support portion disposed in front of the main tube and the support tube, and insertable or accommodated in a front recess formed by the rearward projection of the second channel portion; and a second support portion extending downward from the first support portion and contacting the front surface of the support tube.

[0023] In one embodiment, the first support portion of the connection may have a closed cross section, and a vertically extending reinforcing portion is formed in the first support portion.

[0024] In one embodiment, a first support portion of the connector is inserted into or accommodated in a second channel portion; a first fastener can pass through the first channel portion and be fixed to the first support portion; and a second fastener can pass through the second support portion and be fixed to the support tube.

[0025] According to an embodiment of the present invention, the front crossbeam, the main tube, and the support tube are joined together by a support structure formed by a connecting portion. This improves the rigidity of the connection, and the lightweight nature of the front crossbeam facilitates its manufacture and maintenance.

[0026] The effects of this invention are not limited to those described above. Those skilled in the art should more clearly understand other effects not mentioned herein through the following description. Attached Figure Description

[0027] Figure 1 This is a view showing the front crossbeam according to an embodiment of the present invention.

[0028] Figure 2 It is shown Figure 1 A view of the mating section of the main body of the front bulkhead crossbeam.

[0029] Figure 3 It is shown Figure 1 The diagram shows a cross-sectional view of the mating section of the main tube of the front crossbeam.

[0030] Figure 4 It is shown Figure 1 A view of the connection part of the front crossbeam shown.

[0031] Figure 5 It is shown Figure 1 A view of the joint of the support tubes of the front crossbeam shown.

[0032] Figure 6 It is shown Figure 1 The diagram shows a cross-sectional view of the joint of the front crossbeam support tube.

[0033] Figure 7 It is shown Figure 1 The view shown depicts the connection between the main pipe and the support pipe of the front crossbeam.

[0034] Figure 8This is a view showing the connection between the support tube and the vehicle body according to an embodiment of the present invention.

[0035] Figure 9 This is a view showing a reinforcing plate according to an embodiment of the present invention.

[0036] Figure 10 This is a view showing the front crossbeam according to another embodiment of the present invention.

[0037] Figure 11 It is shown Figure 10 The diagram shows the cross-sectional view of the main pipe, support pipe, and connecting parts of the front crossbeam.

[0038] Figure 12 It is shown Figure 10 The view shown depicts the combination of the main tube, support tube, and connecting parts of the front crossbeam. Detailed Implementation

[0039] In describing embodiments of the present invention, detailed descriptions of related technologies are omitted if it is determined that such descriptions would obscure the essential points of the invention. Furthermore, the accompanying drawings are intended only to facilitate understanding of the embodiments disclosed herein. Therefore, the technical concepts disclosed herein are not limited to the drawings. It should be understood that the disclosed embodiments include all modifications, equivalents, and substitutions included within the scope and technical concept of the invention. The following description is not intended to limit the invention to the precise forms disclosed or a particular field. Various alternative embodiments and modifications to the invention, whether explicit or implicit, are anticipated to be possible. Those skilled in the art will recognize that changes in form and detail can be made without departing from the scope of the invention.

[0040] This invention is described with reference to specific embodiments. However, those skilled in the art to which this invention pertains should understand that the various embodiments disclosed herein can be modified or implemented in various other ways without departing from the spirit and scope of the invention. Therefore, the following description should be considered exemplary and is intended to teach those skilled in the art how to make and use the various embodiments. It should be understood that the forms of the invention shown and described herein should be considered representative embodiments. Equivalent elements, materials, processes, or steps may be substituted for those shown and described herein. Expressions such as “comprising,” “including,” “employing,” “consisting of,” “having,” “is,” and variations thereof used to describe and claim the invention are intended to be interpreted in a non-exclusive manner, allowing for the presence of items, components, or elements not explicitly described. Furthermore, references to the singular should also be understood as references to the plural.

[0041] Furthermore, the various embodiments disclosed herein are for illustrative and explanatory purposes only and should not be construed as limiting the invention. All references to engagement (e.g., attachment, fixation, combination, connection, etc.) are used only to help the reader understand the invention and do not constitute any limitation, particularly regarding the location, orientation, or use of the elements and / or methods disclosed herein. Therefore, any reference to engagement should be interpreted broadly. Moreover, such conjunctions do not necessarily mean that two elements are directly connected to each other. Additionally, all numerical terms or expressions, such as, but not limited to, “first,” “second,” “third,” “primary,” “secondary,” “main,” or any other common and / or numerical terms, should also be considered merely as identifiers to help the reader understand the various elements, embodiments, variations, and / or modifications of the invention. Such terms or expressions do not create any limitation, and in particular do not limit the order or priority of any elements, embodiments, variations, and / or modifications. In other words, these expressions can be used to describe various elements, but these elements are not limited thereto. These expressions are only used to distinguish different elements.

[0042] The suffixes “module” and “part” used in the following description are added or used in combination solely for the convenience of writing the instruction manual. These suffixes themselves have no different meaning or function.

[0043] It should be understood that when an element is referred to as "joined" or "connected" to another element, it can be a direct join or connection, or it can be a connection through other intermediate elements. Conversely, it should be understood that when an element is referred to as "directly joined" or "directly connected" to another element, there are no intermediate elements. Furthermore, the terms "form," "shape," or "form" as used herein can refer to the definition, generation, creation, or otherwise production of a specified feature, characteristic, structure, etc., of an element. Similarly, "form" as used herein can refer to the manufacture or production of an element having specified features, characteristics, structure, etc., or it can mean that the element is provided, placed, arranged, or located in a specific position.

[0044] The disclosure herein may include any number or type of components in any construction described herein. Components may include any combination of the features described herein and may be arranged according to any of the various constructions described herein. The concepts of structure and arrangement of components, as well as their use and operation, in this invention apply not only to the specific embodiments discussed herein, but also to any number of embodiments and any combination thereof. Embodiments having various features and arrangements will be described below in conjunction with the accompanying drawings.

[0045] Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Identical or similar elements are referred to by the same reference numerals throughout the drawings, and repeated descriptions thereof are omitted. When a component, module, unit, part, component, element, device, etc., in the present invention is described as having a certain purpose or performing a certain operation or function, the component, module, unit, part, component, element, device, etc., should be considered as "constructed" to satisfy that purpose or perform that operation or function.

[0046] According to one embodiment of the present invention, such as Figure 1-7 As shown, the front bulkhead crossbeam may include: a main tube 100 (rod, beam, structure, etc.) configured to be arranged laterally in the front bulkhead of the vehicle, and having a mating portion 110 formed at a portion of its lower end; a support tube 200 (rod, beam, structure, etc.) including a connecting portion 210 that matches the mating portion 110 of the main tube 100, the support tube 200 supporting the main tube 100 when connected to the main tube 100; and a connecting portion 300 forming a support structure when in contact with the mating portion 110 and the connecting portion 210.

[0047] The main pipe 100 and the support pipe 200 can be made of steel or a composite material including carbon fiber or glass fiber, which is lighter than metal. Alternatively, aluminum can also be used in the main pipe 100 and the support pipe 200. A variety of materials can be used to ensure rigidity and reduce weight.

[0048] The main pipe 100 can be fixed to the side of the vehicle body B. The support pipe 200 can be connected to the main pipe 100, and also to the vehicle body B, and supports the main pipe 100.

[0049] The main tube 100 can be arranged laterally at the front of the vehicle and can include a matching part 110 to achieve connection with the support tube 200.

[0050] The support tube 200 may include a connecting portion 210, and the connecting portion 210 may be formed at the upper end of the support tube 200.

[0051] In other words, the mating part 110 is formed at the lower end of the main pipe 100, and the connecting part 210 is formed at the upper end of the support pipe 200. When the mating part 110 and the connecting part 210 come into contact with each other, the main pipe 100 and the support pipe 200 can be joined together. The mating part 110 and the connecting part 210 can be joined together by welding, bolting, riveting, or other methods.

[0052] In this invention, the mating portion 110 and the connecting portion 210 may include a connecting portion 300. The connecting portion 300 may be formed on each or one of the mating portion 110 and the connecting portion 210, and may include a support surface disposed or arranged in a direction that matches the mating portion 110 and the connecting portion 210 with each other.

[0053] In this invention, the connecting portion 300 may be formed at the mating portion 110 and the connecting portion 210 respectively, and may include or be composed of a support surface to provide additional support structure to the contact area of ​​the mating portion 110 and the connecting portion 210. This ensures support rigidity relative to the axial direction.

[0054] In describing the invention in detail, the main pipe 100 may include a first channel portion 120 having a cross-sectional shape that protrudes forward and bends, i.e., bends or protrudes forward; and may include a second channel portion 130 extending from or below the lower portion of the first channel portion 120 or arranged to protrude downward and having a cross-sectional shape that bends and protrudes backward, i.e., bends or protrudes in the opposite rearward direction. A mating portion 110 may be formed at the lower end of the second channel portion 130. In this case, the cross-section may be a side cross-section.

[0055] like Figure 2 and Figure 3 As shown, the main tube 100 may have an "S" shape, with its first channel portion 120 and second channel portion 130 protruding alternately in the front-rear direction. As described above, since the first channel portion 120 and the second channel portion 130 are curved in the front-rear direction, the main tube 100 can ensure overlap performance in the event of a frontal collision.

[0056] The front and rear curved shapes formed by the first channel section 120 and the second channel section 130 can be formed in opposite directions to each other. In addition, besides the first channel section 120 and the second channel section 130, another channel section can be provided. Each channel section can have a different shape depending on the required rigidity and the design of the vehicle body B.

[0057] A matching portion 110 may be formed at a second channel portion 130 located at the lower part of the main tube 100. The matching portion 110 provided at the lower end of the second channel portion 130 allows the connecting portion 210 of the support tube 200 to be connected to the matching portion 110. In other words, the matching portion 110 may be a part of the second channel portion 130 and has a shape that can be cut and formed according to the shape of the connecting portion 210 of the support tube 200.

[0058] The cross-sectional shape of the joint 210 of the support tube 200 may include a front wall 211 located in the central part and a side wall 212 that bends backward from one or both ends of the front wall 211. In this case, the cross-section may be the upper cross-section.

[0059] like Figure 5 As shown, the joint 210 of the support tube 200 can be in the shape of "[" (i.e., similar to "C" or "U"), and is composed of a front wall 211 and a side wall 212. The front wall 211 and the side wall 212 not only determine the shape of the joint 210, but also determine the overall shape of the support tube 200.

[0060] Therefore, since the front wall 211 and the side wall 212 provide a curved shape for the support tube 200, the support tube 200 can ensure overlap performance in the event of a frontal collision. In addition, since both the front wall 211 and the side wall 212 are in contact with the mating portion 110 of the main tube 100, a contact area is formed, thereby ensuring the contact rigidity of the support tube 200.

[0061] A connecting portion 210 is formed at the upper end of the support tube 200 to connect to the matching portion 110 of the main tube 100.

[0062] The connecting portion 300, which ensures that the main tube 100 and the support tube 200 are rigidly connected to each other, may include a first support end 310 and a second support end 320.

[0063] like Figures 2-4 As shown, the first support end 310 can extend from the matching part 110 to contact the two ends of the front wall 211 and the side wall 212 of the connecting part 210, but does not include the central part that overlaps with the two ends of the front wall 211.

[0064] At this time, the first support end 310 can extend forward from the matching part 110.

[0065] The first support end 310 extending forward from the mating portion 110 may be formed by the cutting portion or the forward extension portion of the mating portion 110.

[0066] For example, the portion that forms the first support end 310 corresponds to the central portion of the front wall 211 of the joint 210. The first support end 310 can form a support structure when it contacts both ends of the front wall 211 of the joint 210 and the side wall 212. Therefore, when the main pipe 100 and the support pipe 200 are joined together, excessive load concentration on the front wall 211 of the joint 210 of the support pipe 200 can be prevented, and longitudinal rigidity can be ensured by distributing the load.

[0067] Furthermore, the mating portion 110 may include one or more ribs 111 connected to or formed on the upper surface of the first support end 310 to support the first support end 310. The multiple ribs 111 may be arranged longitudinally along the main pipe 100. By connecting the second channel portion 130 to the first support end 310, the rigidity of the first support end 310 can be improved.

[0068] like Figures 5-7 As shown, the second support end 320 can extend from the central portion of the front wall 211 of the joint portion 210 to contact the mating portion 110.

[0069] At this time, the second support end 320 can extend rearward from the front wall 211 of the joint 210.

[0070] As described above, the second support end 320 extends rearward from the joint portion 210. A portion of the joint portion 210 can be folded rearward to form the second support end 320. In this case, the portion used for folding to form the second support end 320 can be the central portion of the front wall 211 of the joint portion 210. The second support end 320 contacts the lower end of the second channel portion 130 of the main pipe 100 to form a support structure. The second support end 320 can be configured to be divided into a plurality of second support ends.

[0071] Therefore, when the main pipe 100 and the support pipe 200 are joined together, the support pipe 200 can support the main pipe 100. The first support end 310 of the main pipe 100 contacts both ends of the front wall 211 and the side wall 212 of the joint 210 to form a support structure, and the second support end 320 of the support pipe 200 contacts the central portion of the front wall 211 of the main pipe 100 to form a support structure. This ensures a rigid support structure for the main pipe 100 and the support pipe 200. Furthermore, rigid fixation and vibration reduction functions can be achieved without separate components.

[0072] The cross-sectional shape of the support tube 200 includes a front wall 211 located in the center and side walls 212 that curve rearward from both ends or edges of the front wall 211. The lower part of the front wall 211 or the side wall 212 can be closed to form a double flange portion 220, so that the support tube 200 can be fixed to the vehicle body B through the double flange portion 220.

[0073] like Figure 8 As shown, when the front wall 211 and the side wall 212 converge, the lower part of the support tube 200 can form a double flange portion 220.

[0074] The flange 220 may be formed by modifying the lower portion of the front wall 211 to contact a side wall 212; alternatively, the lower portion of a side wall 212 may be modified to contact the front wall 211, such that the front wall and the side wall have the same surface. In another example, the two side walls 212 on both sides of the front wall 211 may be made to contact each other, and the width of the front wall 211 between them may be reduced to form a double flange 220.

[0075] Because the front wall 211 and the side walls 212 overlap to form a double-layer structure, the flange portion 220 is rigid. The portion attached to the vehicle body B consists only of the flange portion 220, allowing the support tube 200 to be fixed to the vehicle body B without separate components. The flange portion 220 can also be formed as a three-layer structure with the front wall 211 and a pair of side walls 212 overlapping each other, which can be flexibly applied according to its design.

[0076] Fastener A can pass through flange 220, allowing support tube 200 to be secured to vehicle body B. Fastener A can be configured to fasten components by bolting or riveting.

[0077] Furthermore, by changing the overlapping shape of the front wall 211 and the side wall 212, the flange portion 220 can form an additional overlapping structure. When the support tube 200 is fixed to the vehicle body B, the overlapping shape can be changed according to the required rigidity.

[0078] like Figure 9 As shown, the reinforcing plate 400 can be disposed on the front or rear surface of the mating portion 110 of the main pipe 100 and the joint portion 210 of the support pipe 200. The reinforcing plate 400 can be fixed to the support pipe 200 by fastener A. At this time, the fastener A can be a bolt or a rivet.

[0079] The reinforcing plate 400 may be provided on one or both of the front and rear surfaces of the main pipe 100 and the support pipe 200, and may be formed to cover the part where the main pipe 100 and the support pipe 200 are joined together.

[0080] The reinforcing plate 400 may be made of a rigid body and covers the joint between the main pipe 100 and the support pipe 200, thereby absorbing external impacts generated at the joint. The reinforcing plate 400 may be attached to the main pipe 100 and the support pipe 200 by fastener A to improve the joint rigidity of the main pipe 100 and the support pipe 200.

[0081] According to another embodiment of the present invention, such as Figures 10-12 As shown, the front bulkhead crossbeam may include: a main tube 100, which is laterally disposed at the front bulkhead of the vehicle and has a mating portion 110 formed at its lower end; a support tube 200, which includes a connecting portion 210 that mates with the mating portion 110 of the main tube 100 and supports the main tube 100 when connected to the main tube 100; and a connecting portion 300, which provides a support structure when in contact with the mating portion 110 and the connecting portion 210.

[0082] The main pipe 100 can be fixed to the side of the vehicle body B. The support pipe 200 can be connected to the main pipe 100, and also to the vehicle body B, and supports the main pipe 100.

[0083] The main pipe 100 is arranged laterally at the front of the vehicle and may include a matching part 110 for connection with the support pipe 200.

[0084] The support tube 200 may include a connecting portion 210, and the connecting portion 210 may be formed at the upper end of the support tube 200.

[0085] In other words, the mating part 110 is formed at the lower end of the main pipe 100, and the connecting part 210 is formed at the upper end of the support pipe 200. When the mating part 110 and the connecting part 210 come into contact with each other, the main pipe 100 and the support pipe 200 can be joined together. The mating part 110 and the connecting part 210 can be joined together by means of welding, bolting, or riveting.

[0086] In this invention, the mating portion 110 and the connecting portion 210 can be joined together by the connecting portion 300. The connecting portion 300 can be formed to cover the mating portion 110 and the connecting portion 210 and fasten the mating portion 110 and the connecting portion 210 together.

[0087] As described above, the connecting portion 300 can be formed to cover the contact portion of the mating portion 110 and the connecting portion 210, and can be fixed by simultaneously fastening it to the main pipe 100 and the support pipe 200. This ensures the rigidity of the connection and the axial support rigidity of the main pipe 100 and the support pipe 200.

[0088] Specifically, the main pipe 100 includes a first channel portion 120 having a forward-curving cross-sectional shape; and a second channel portion 130 extending from the lower portion of the first channel portion 120 and projecting rearward. A mating portion 110 may be formed at the lower end of the second channel portion 130.

[0089] Since the first channel portion 120 and the second channel portion 130 protrude alternately in the front-rear direction, the main tube 100 can be S-shaped. As described above, since the first channel portion 120 and the second channel portion 130 are curved in the front-rear direction, the main tube 100 can ensure overlap performance in the event of a frontal collision.

[0090] The matching part 110 may be formed at the second channel part 130 located at the lower part of the main tube 100. The matching part 110 provided at the lower end of the second channel part 130 allows the connecting part 210 of the support tube 200 to be connected to the matching part 110.

[0091] The connecting portion 300 may include a first support portion 330 (i.e., a protrusion) disposed in front of the main tube 100 and the support tube 200 and inserted into a front recess that is recessed due to the rearward protrusion of the second channel portion 130. The connecting portion 330 may also include a second support portion 340 that extends downward from the first support portion 330 to contact the front surface of the support tube 200.

[0092] As described above, the connecting portion 300 may include a first support portion 330 and a second support portion 340. The connecting portion 300 may be configured such that the first support portion 330 covers the main tube 100 and the second support portion 340 covers a portion of the support tube 200.

[0093] The connecting portion 300 is located at the front of the main pipe 100. The first support portion 330 can be inserted into the second channel portion 130 from the front space of the second channel portion 130. Therefore, the first support portion 330 can be formed to match the shape of the concave front portion formed when the second channel portion 130 protrudes rearward.

[0094] The second support portion 340 may be disposed in front of the support tube 200 and formed to cover a portion of the front surface of the support tube 200.

[0095] As described above, the connecting portion 300 can improve the connection rigidity between the mating portion 110 and the connecting portion 210, wherein the first support portion 330 is inserted into the second channel portion 130 and covers the mating portion 110, and the second support portion 340 covers the connecting portion 210 of the support tube 200. The connecting portion 300 can also protect the contact portion of the mating portion 110 and the connecting portion 210 from impact or vibration.

[0096] Furthermore, the first support portion 330 of the connecting portion 300 has a closed cross-section. The first support portion 330 may include a reinforcing portion 350, which extends vertically.

[0097] like Figure 11 As shown, the first support portion 330 of the connecting portion 300 has a closed cross-section by inserting the first support portion 330 into the protruding portion in the second channel portion 130 and the portion extending longitudinally from the second support portion 340. A reinforcing portion 350 is formed longitudinally inside the first support portion 330 to improve its rigidity. The number of reinforcing portions 350 can be varied depending on the required rigidity. Furthermore, the reinforcing members 350 can be formed not only in the longitudinal direction but also in a diagonal direction.

[0098] like Figure 12 As shown, the first support portion 330 is inserted into the second channel portion 130. The first fastener A1 passes through the first channel portion 120 and is fixed to the first support portion 330. The second fastener A2 passes through the second support portion 340. Therefore, the connecting portion 300 can be fixed to the support tube 200.

[0099] The first fastener A1 and the second fastener A2 can be bolts or rivets.

[0100] As described above, the first support portion 330 is inserted into the second channel portion 130 and covers the mating portion 110 of the main pipe 100. A first fastener A1 passes longitudinally through the first channel portion 120 to secure it to the first support portion 330. Therefore, the first support portion 330 of the connecting portion 300 can be fixed to the main pipe 100. Furthermore, the second support portion 340 covers the joining portion 210 of the support tube 200. A second fastener A2 passes laterally through the second support portion 340 to secure it to the support tube 200. Therefore, the second support portion 340 of the connecting portion 300 can be fixed to the support tube 200.

[0101] As described above, the connecting part 300 is fixed to the main pipe 100 and the support pipe 200 by the longitudinal fastening of the first fastener A1 and the lateral fastening of the second fastener A2. This maintains a rigid connection and ensures rigid support in both the axial and lateral directions.

[0102] According to the invention, the main tube and the support tube are joined together by a support structure formed by the connecting part in the front crossbeam. This improves the rigidity of the connection, and the lightweight nature of the front crossbeam facilitates its manufacture and maintenance.

[0103] While specific embodiments of the present invention have been provided, those skilled in the art will understand that the present invention can be modified and altered in various ways without departing from the scope of protection provided by the claims.

Claims

1. A front crossbeam, comprising: The main tube is configured to be arranged laterally at the front bulkhead of the vehicle, and a mating portion is formed at a portion of the lower end of the main tube; A support tube, including a mating portion that matches the mating portion of the main tube, the support tube being coupled to the main tube to support the main tube; as well as The connecting portion contacts the matching portion and the joining portion to form a support structure. The connecting portions are respectively disposed at the matching portion and the joint portion, and have a support surface arranged in a direction that matches the matching portion and the joint portion.

2. The front crossbeam according to claim 1, wherein, The main tube includes a first channel portion having a forward-protruding curved cross-sectional shape, and a second channel portion extending rearwardly from the lower portion of the first channel portion, wherein the matching portion is disposed at the lower end of the second channel portion.

3. The front crossbeam according to claim 1, wherein, The cross-sectional shape of the joint of the support tube includes a front wall located in the central part and a side wall that bends backward from the end of the front wall.

4. The front crossbeam according to claim 3, wherein, The connecting portion includes a first support end that extends from the mating portion to contact both ends of the front wall of the connecting portion (excluding the central portion) and to contact the side wall.

5. The front crossbeam according to claim 4, wherein, The first support end extends forward from the mating portion.

6. The front crossbeam according to claim 4, wherein, The matching part includes a rib that is connected to the upper surface of the first support end and supports the first support end.

7. The front crossbeam according to claim 3, wherein, The connecting portion includes a second support end that extends from the center of the front wall of the connecting portion to contact the mating portion.

8. The front crossbeam according to claim 7, wherein, The second support end extends rearward from the front wall of the joint.

9. The front crossbeam according to claim 1, wherein, The cross-sectional shape of the support tube includes a front wall located in the center and a side wall that bends rearward from the end of the front wall, wherein the lower part of the support tube is closed to form a double flange for securing the front bulkhead beam to the vehicle body.

10. The front crossbeam according to claim 1, wherein, A reinforcing plate is provided on the front or back of the mating part of the main tube and the joint of the support tube, and wherein the reinforcing plate is fixed to the support tube by fasteners.

11. A front crossbeam, comprising: The main tube is configured to be arranged laterally at the front bulkhead of the vehicle, and a mating portion is formed at a portion of the lower end of the main tube; A support tube, including a mating portion that matches the mating portion of the main tube, the support tube being coupled to the main tube to support the main tube; as well as The connecting portion contacts the matching portion and the joining portion to form a support structure. The connecting portion partially covers the matching portion and the joining portion, and joins the matching portion and the joining portion together.

12. The front crossbeam according to claim 11, wherein, The main tube includes a first channel portion having a forward-protruding curved cross-sectional shape, and a second channel portion extending rearwardly from the lower portion of the first channel portion, wherein the matching portion is disposed at the lower end of the second channel portion.

13. The front crossbeam according to claim 12, wherein, The connecting part includes: A first support portion is disposed in front of the main pipe and the support tube, and is inserted into a front recess formed by the rearward protrusion of the second channel portion; and The second support extends downward from the first support to contact the front surface of the support tube.

14. The front crossbeam according to claim 13, wherein, The first support portion of the connection has a closed cross section, and a vertically extending reinforcing portion is formed therein.

15. The front crossbeam according to claim 13, wherein: The first support portion of the connecting portion is accommodated in the second channel portion; The first fastener passes through the first channel portion and is fixed to the first support portion; and The second fastener passes through the second support portion and is fixed to the support tube.

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