Protective structure for longitudinal beam Y-direction stress protection and longitudinal beam assembly with protective structure

Abstract

The invention relates to the field of vehicle bodies, in particular to a protection structure for longitudinal beam Y-direction stress protection and a longitudinal beam assembly with the protection structure. The interior of the longitudinal beam body is hollow; the vertical section of the longitudinal beam body is in a square shape. The device is characterized by comprising a supporting block, and an adhesive layer is arranged on the supporting block; the protection structure is arranged in the longitudinal beam; through cooperative use of the supporting blocks and the adhesive layers, internal support can be provided for the longitudinal beams, and Y-direction stress of the longitudinal beams is resisted; besides, the protective structure disclosed by the invention has the function of a basic longitudinal beam reinforcer, the protective structure disclosed by the invention does not need a welding process, and the bonding glue layer can bond the supporting block and the longitudinal beam body into a whole after high-temperature foaming; and better Y-direction supporting force can be provided for the longitudinal beam.

Description

Technical Field

[0001] The present invention relates to the field of vehicle bodies, and more specifically, to a protection structure for longitudinal beam Y-direction force protection and a longitudinal beam assembly having the protection structure. Background Art

[0002] The frame assembly is an important load-bearing component in an automobile and is also the main force-bearing component during a collision. Therefore, the rigidity strength of the frame assembly occupies an important position in the vehicle body.

[0003] When an automobile is subjected to a frontal collision, the front longitudinal beam of the frame is directly stressed and is most likely to be bent or deformed.

[0004] According to the CAE analysis report, the bending deformation of the front longitudinal beam body is most obvious at the arc position after the front section of the frame is collided.

[0005] In addition, for some longitudinal beam assemblies, due to other components or specific positions inside the longitudinal beam body, it is difficult to arrange traditional sheet metal reinforcement parts in local areas of the longitudinal beam or it is difficult to weld when arranging traditional sheet metal reinforcement parts.

[0006] The existing patent 201920247463.6 - A front section frame reinforcement structure and an automobile does not clearly disclose the technical content for solving the above technical problems.

[0007] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing longitudinal beam reinforcement structure. Summary of the Invention

[0008] The purpose of the present invention is to provide a longitudinal beam reinforcement structure that can be connected to the longitudinal beam body without welding.

[0009] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0010] A protection structure for longitudinal beam Y-direction force protection, the longitudinal beam includes a longitudinal beam body; the longitudinal beam body is hollow inside; the vertical cross-section of the longitudinal beam body is in a square shape; characterized in that it includes a support block, and the support block is provided with an adhesive layer; the protection structure is arranged inside the longitudinal beam.

[0011] The support block includes a block body, and the block body is provided with a positioning mechanism; the positioning mechanism includes a positioning buckle arranged on the block body.

[0012] The positioning mechanism includes at least two spaced-apart positioning buckles, and the support block is inserted on the longitudinal beam body through the positioning mechanism.

[0013] The block body is provided with an embedding mechanism; the embedding mechanism includes an embedding groove arranged on the block body.

[0014] The side of the block that fits against the inner side wall of the longitudinal beam body is provided with a plurality of embedded grooves; the side of the block that fits against the inner side wall of the longitudinal beam body is serrated.

[0015] The block is provided with a weight-reducing groove; the weight-reducing groove is a sunken groove; a liquid discharge hole is provided at the bottom of the weight-reducing groove.

[0016] The bonding adhesive layer includes a lateral bonding adhesive layer, an upper bonding adhesive layer, and a lower bonding adhesive layer; the lateral bonding adhesive layer is arranged between the block and the inner side wall of the longitudinal beam body; the layer thicknesses of the upper bonding adhesive layer and the lower bonding adhesive layer are different.

[0017] The block is also provided with a liquid discharge channel.

[0018] A longitudinal beam assembly includes a longitudinal beam, and the longitudinal beam includes a longitudinal beam body; the longitudinal beam body includes a lower longitudinal beam and a longitudinal beam upper plate; the vertical cross-section of the lower longitudinal beam is inverted U-shaped; the longitudinal beam upper plate and the lower longitudinal beam form a structure with a vertical cross-section in the shape of a rectangle; a reinforcing inner plate is provided inside the longitudinal beam body; a bottom reinforcing plate is also provided between the reinforcing inner plate and the longitudinal beam body; the protection structure is provided inside the longitudinal beam body.

[0019] The protection structure is arranged at the corner of the longitudinal beam body.

[0020] The advantages of the present invention are as follows:

[0021] The present invention discloses a protection structure for longitudinal beam Y-direction force protection and a longitudinal beam assembly having the protection structure.

[0022] Through the combined use of the support block and the bonding adhesive layer, the present invention can provide internal support for the longitudinal beam and resist the Y-direction force of the longitudinal beam; in addition, the protection structure disclosed in the present invention, in addition to having the function of a basic longitudinal beam reinforcement member, does not require a welding process, and the bonding adhesive layer can bond the support block and the longitudinal beam body into one body after high-temperature foaming; it can provide better Y-direction support force for the longitudinal beam. Brief Description of the Drawings

[0023] The following briefly describes the content expressed in each drawing of the specification of the present invention and the marks in the drawings:

[0024] Figure 1 It is a perspective view of the first perspective of the present invention.

[0025] Figure 2 It is a top view of the present invention.

[0026] Figure 3 It is a perspective view of the second perspective of the present invention.

[0027] Figure 4 It is a perspective view of the third perspective of the present invention.

[0028] Figure 5 This is a schematic structural view of the longitudinal beam assembly in the present invention.

[0029] Figure 6 This is a schematic structural view of the first embodiment after the connection between the longitudinal beam body and the protection structure in the present invention.

[0030] Figure 7 This is a schematic structural view of the second embodiment after the connection between the longitudinal beam body and the protection structure in the present invention.

[0031] Figure 8 is Figure 7 A cross-sectional view along A-A.

[0032] Figure 9 This is a schematic structural view of the third embodiment after the connection between the longitudinal beam body and the protection structure in the present invention.

[0033] Figure 10 is Figure 7 A cross-sectional view along B-B.

[0034] The markings in the above figures are all:

[0035] 1. Protection structure, 11. Support block, 12. Adhesive layer, 2. Embedding mechanism, 3. Positioning buckle, 4. Weight reduction trough, 5. Drainage channel, 6. Longitudinal beam. Detailed implementation manners

[0036] The following further elaborates on the specific implementation manners of the present invention by describing the optimal embodiments with reference to the accompanying drawings.

[0037] A protection structure 1 for protecting the longitudinal beam against Y-direction forces, the longitudinal beam 6 includes a longitudinal beam body 6-1; the longitudinal beam body 6-1 is hollow inside; the vertical cross-section of the longitudinal beam body 6-1 is in a square shape and includes a support block 11, and an adhesive layer 12 is provided on the support block 11; the protection structure 1 is arranged inside the longitudinal beam 6; through the combined use of the support block 11 and the adhesive layer 12 in the present invention, internal support can be provided for the longitudinal beam 6 to resist the Y-direction forces on the longitudinal beam; in addition, in addition to having the function of the basic longitudinal beam 6 reinforcement member, the protection structure 1 disclosed in the present invention does not require a welding process, and the adhesive layer 12 can bond the support block 11 and the longitudinal beam body 6-1 into one body after high-temperature foaming; it can provide better Y-direction support force for the longitudinal beam 6.

[0038] The protection structure 1 disclosed in the present invention is mainly applicable inside the longitudinal beam 6, and the deformation resistance of the longitudinal beam 6 is enhanced through the cooperation of the support block 11 and the adhesive layer 12.

[0039] The longitudinal beam body 6-1 disclosed in the present invention is the main structure of the longitudinal beam 6. In the present invention, the longitudinal beam body 6-1 is hollow inside, and its vertical cross-section is in the shape of a "mouth", which is a typical structural design of the longitudinal beam 6, facilitating weight reduction while maintaining a certain structural strength.

[0040] Meanwhile, in order to ensure the structural strength of the longitudinal beam 6, during actual design, a reinforcing inner plate 63 is generally provided inside the longitudinal beam body 6-1; a bottom reinforcing plate 64 is also provided between the reinforcing inner plate 63 and the longitudinal beam body 6-1.

[0041] The support block 11 is the core component of the protection structure 1, and an adhesive layer 12 is provided thereon.

[0042] The shape and size of the support block 11 can be designed according to the internal space of the longitudinal beam body 6-1 to ensure that it can closely fit the inner wall of the longitudinal beam body 6-1.

[0043] Adhesive layer 12: The adhesive layer 12 is provided on the support block 11 for bonding the support block 11 and the longitudinal beam body 6-1 into one body; meanwhile, in the present invention, it is required that the adhesive layer 12 has the characteristic of high-temperature foaming, and can foam and expand under high-temperature conditions to enhance the bonding strength between the support block 11 and the longitudinal beam body 6-1.

[0044] In the present invention, the protection structure 1 is arranged inside the longitudinal beam body 6-1, provides internal support through the support block 11, and resists the longitudinal beam's Y-direction force; this internal support method can effectively enhance the anti-deformation ability of the longitudinal beam 6, especially when subjected to lateral external forces.

[0045] The protection structure 1 does not require a welding process, avoiding the process complexity and cost increase caused by welding; at the same time, it avoids the interference problem between the longitudinal beam 6 and adjacent components during welding at the corners.

[0046] It can also avoid the problem that local areas of the traditional longitudinal beam 6 cannot be welded.

[0047] In addition, in the present invention, after the adhesive layer 12 undergoes high-temperature foaming, it can firmly bond the support block 11 and the longitudinal beam body 6-1 together to form an integral structure; through the cooperation of the support block 11 and the adhesive layer 12, the protection structure 1 can provide better Y-direction support force for the longitudinal beam 6.

[0048] The above design not only enhances the anti-deformation ability of the longitudinal beam 6, but also improves the stability and reliability of the overall structure.

[0049] The combined use of the support block 11 and the adhesive layer 12 significantly improves the anti-deformation ability of the longitudinal beam 6 when subjected to Y-direction force.

[0050] The protection structure 1 does not require a welding process, simplifies the production process, and reduces the production cost.

[0051] The high-temperature foaming property of the bonding adhesive layer 12 further enhances the bonding strength between the support block 11 and the longitudinal beam body 6-1, ensuring the stability of the structure.

[0052] The design of the protective structure 1 is applicable to various longitudinal beam 6 structures, having good versatility and adaptability.

[0053] Furthermore, in the present invention, the support block 11 includes a block body 111, and a positioning mechanism is provided on the block body 111; the positioning mechanism includes a positioning buckle 3 provided on the block body 111; in the present invention, the block body 111 is the main structure of the support block 11, playing a good role in support and protection, and a positioning buckle 3 is provided on the block body 111, mainly to achieve the stable and precise placement of the protective structure 1 within the longitudinal beam 6.

[0054] Because after the protective structure 1 of the present invention is assembled into the longitudinal beam 6, the bonding adhesive layer 12 is not directly foamed at high temperature; therefore, through the setting of the positioning mechanism in the present invention, the movement of the protective structure 1 within the longitudinal beam 6 can be avoided; at the same time, it is convenient to achieve the high-temperature foaming of the bonding adhesive layer 12; to avoid the offset of the protective structure 1 after foaming.

[0055] In the present invention, the support block 11 includes a block body 111, and a positioning mechanism is provided on the block body 111.

[0056] The main function of the positioning mechanism is to accurately fix the support block 11 at a predetermined position inside the longitudinal beam body 6-1.

[0057] The positioning buckle 3 can adopt an existing buckle structure or can be integrally injection molded with the block body 111.

[0058] In the present invention, the positioning buckle 3 plays a guiding and fixing role during the installation process.

[0059] When the support block 11 is inserted into the longitudinal beam body 6-1, the positioning buckle 3 can guide the support block 11 to the correct position and be fixed on the longitudinal beam body 6-1 through an elastic clamping mechanism after reaching; it can achieve fast and stable positioning.

[0060] The design of the positioning buckle 3 makes the installation process of the support block 11 simpler and faster, reducing the complexity of manual operation.

[0061] Furthermore, in the present invention, the positioning mechanism includes at least two spaced-apart positioning buckles 3, and the support block 11 is inserted and connected to the longitudinal beam body 6-1 through the positioning mechanism; the two spaced-apart positioning buckles 3 play a good role in mutual limiting and calibration, avoiding the rotation and offset of the protective structure 1 within the longitudinal beam body 6-1; at the same time, it also plays a good role in calibration and limitation, avoiding the misinstallation of the protective structure 1.

[0062] Furthermore, in the present invention, an embedding mechanism 2 is embedded in the block 111; the embedding mechanism 2 includes an embedding groove 21 provided on the block 111; the setting of the embedding mechanism 2 in the present invention mainly facilitates the placement of the bonding adhesive layer 12 on the block 111; the main function of the embedding groove 21 in the present invention is to provide a stable and reliable placement position for the bonding adhesive layer 12, ensuring that the bonding adhesive layer 12 can firmly adhere to the block 111; at the same time, the embedding groove 21 also plays a good role in reducing material and weight.

[0063] In addition, in the present invention, the design of the embedding groove 21 provides a defined space for the bonding adhesive layer 12, preventing the bonding adhesive layer 12 from shifting on the support block 11. This is particularly important during the high-temperature foaming process because the bonding adhesive is usually liquid or semi-liquid before foaming and is prone to flow.

[0064] Through the embedding groove 21, the bonding adhesive layer 12 can be accurately positioned at a specific position on the support block 11, ensuring that the contact area between it and the inner wall of the longitudinal beam body 6-1 is maximized, thereby improving the bonding strength.

[0065] The shape and size of the embedding groove 21 can be optimized according to the characteristics of the bonding adhesive layer 12 to match the shape of the bonding adhesive layer 12.

[0066] This can ensure that the bonding adhesive layer 12 can expand uniformly during the foaming process, filling the gap between the support block 11 and the longitudinal beam body 6-1 to form a tight integral structure.

[0067] In actual design, the embedding groove 21 can be designed as a groove body structure with an isosceles trapezoid horizontal projection, which makes the outer opening of the embedding groove 21 larger than the inner opening, so as to realize the restraint and fixation of the embedding groove 21 on the bonding adhesive layer 12.

[0068] The embedding groove 21 can also increase the contact area between the bonding adhesive layer 12 and the support block 11, further enhancing the bonding effect and improving the overall stability of the protective structure 1.

[0069] The design of the embedding mechanism 2 makes the installation process of the bonding adhesive layer 12 simpler and faster; in actual operation, the operator only needs to put the bonding adhesive layer 12 into the embedding groove 21 to complete the placement of the bonding adhesive layer 12, without complex positioning and fixing operations; this design reduces the assembly time and the complexity of manual operations, improves production efficiency, and reduces production costs.

[0070] The design of the embedding mechanism 2 can effectively avoid the problem of poor bonding caused by the position shift of the bonding adhesive layer 12 during the high-temperature foaming process.

[0071] Through the limiting effect of the embedded sink 21, the bonding adhesive layer 12 can always be maintained in a predetermined position, ensuring the stability and reliability of the protection structure 1 inside the longitudinal beam 6.

[0072] The embedded sink 21 is usually arranged on the side surface where the support block 11 is in contact with the inner side wall of the longitudinal beam body 6-1.

[0073] Its shape and size can be optimized according to the internal structure of the longitudinal beam body 6-1 and the characteristics of the bonding adhesive layer 12 to ensure that the bonding adhesive layer 12 can be evenly distributed and firmly attached.

[0074] The depth and width of the embedded sink 21 should be adjusted according to the thickness of the bonding adhesive layer 12 and the volume expansion rate after foaming to ensure that the bonding adhesive layer 12 can completely fill the sink and closely fit the inner wall of the longitudinal beam body 6-1 after foaming.

[0075] According to the size of the support block 11 and the structure of the longitudinal beam body 6-1, multiple embedded sinks 21 can be designed and distributed at different positions of the support block 11.

[0076] This can further enhance the fixing effect of the bonding adhesive layer 12 and improve the overall stability of the protection structure 1; for example, embedded sinks 21 can be arranged on the upper and lower sides or around the support block 11 respectively to form an all-round fixing system for the bonding adhesive layer 12.

[0077] The embedding mechanism 2 enhances the bonding strength between the support block 11 and the longitudinal beam body 6-1 by ensuring the even distribution and firm attachment of the bonding adhesive layer 12.

[0078] This enables the protection structure 1 to better resist the force in the Y direction inside the longitudinal beam 6 and significantly improves the anti-deformation ability of the longitudinal beam 6.

[0079] The embedding mechanism 2 ensures the stability and reliability of the protection structure 1 inside the longitudinal beam 6 by preventing the position deviation of the bonding adhesive layer 12 during the high-temperature foaming process.

[0080] Furthermore, in the present invention, a plurality of embedded sinks 21 are provided on the side surface of the block 111 that is in contact with the inner side wall of the longitudinal beam body 6-1; the side surface of the block 111 that is in contact with the inner side wall of the longitudinal beam body 6-1 is serrated; a plurality of embedded sinks 21 are provided on the side surface of the block 111 that is in contact with the inner side wall of the longitudinal beam body 6-1.

[0081] This multi-point distribution design can ensure the even distribution of the bonding adhesive layer 12 at different positions, thereby improving the bonding strength between the entire support block 11 and the longitudinal beam body 6-1.

[0082] Multiple embedded grooves 21 can provide multiple bonding points, making the support block 11 more stable inside the longitudinal beam body 6-1 and reducing structural looseness or deformation caused by insufficient local bonding.

[0083] When the longitudinal beam 6 is subjected to Y-direction force, the multiple embedded grooves 21 can disperse the force and avoid stress concentration, thus better resisting deformation.

[0084] The serrated structure can optimize the stress distribution, making the stress more evenly distributed on the contact surface between the block 111 and the longitudinal beam body 6-1, avoiding local stress concentration, and thus improving the anti-deformation ability of the entire protection structure 1; the serrated structure is formed due to the design of the multiple embedded grooves 21, and the serrated structure can effectively prevent the support block 11 from sliding or displacing inside the longitudinal beam 6, especially during the high-temperature foaming process, ensuring the uniform distribution and firm adhesion of the adhesive layer 12, and further improving the stability and safety of the entire protection structure 1.

[0085] Furthermore, in the present invention, a weight-reducing groove 4 is provided on the block 111; the weight-reducing groove 4 is a sunk groove; a liquid discharge hole 41 is provided at the bottom of the weight-reducing groove 4; the weight-reducing groove 4 is essentially for the purpose of weight reduction, reducing the overall weight of the protection structure 1 and the subsequent vehicle body weight.

[0086] In the present invention, the main function of the liquid discharge hole 41 is to discharge the liquid in the weight-reducing groove 4 and prevent the liquid from accumulating in the weight-reducing groove 4.

[0087] Furthermore, in the present invention, the adhesive layer 12 includes a lateral adhesive layer 12, an upper adhesive layer 123, and a lower adhesive layer 121; the lateral adhesive layer 12 is arranged between the block 111 and the inner side wall of the longitudinal beam body 6-1; the layer thicknesses of the upper adhesive layer 123 and the lower adhesive layer 121 are different; in the present invention, the adhesive layer mainly plays a connecting role.

[0088] The lateral adhesive layer 12 is arranged between the block 111 and the inner side wall of the longitudinal beam body 6-1, and its main function is to enhance lateral stability: through the adhesive force of the adhesive layer 12, the lateral stability between the block 111 and the inner wall of the longitudinal beam 6 is enhanced, preventing lateral displacement when subjected to Y-direction force.

[0089] The lateral adhesive layer 12 can effectively disperse stress and avoid local stress concentration, thus improving the anti-deformation ability of the entire structure.

[0090] In the present invention, the upper adhesive layer 123 is arranged above the block 111, and the lower adhesive layer 121 is arranged below the block 111. Here, the orientation is based on the vehicle being placed on a horizontal plane; the block 111 is arranged horizontally.

[0091] In the present invention, the layer thicknesses of the upper bonding adhesive layer 123 and the lower bonding adhesive layer 121 are different, and the upper and lower bonding adhesive layers 121 face different stress environments; the upper bonding adhesive layer can better restrain the block 111 so that it is inside the longitudinal beam body 6-1; prevent the lower part of the block 111 from detaching from the connected reinforcing inner plate 63.

[0092] Furthermore, in the present invention, a drainage channel 5 is also provided on the block 111; in actual use, after the longitudinal beam 6 is made into a white vehicle body, subsequent processes need to enter the painting process; the drainage channel 5 can be used to discharge the painting liquid on the block 111, and also facilitate the painting liquid to pass through the drainage channel 5 and enter other components inside the longitudinal beam 6 to achieve the painting operation of other components.

[0093] A longitudinal beam assembly, comprising a longitudinal beam 6, the longitudinal beam 6 including a longitudinal beam body 6-1; the longitudinal beam body 6-1 including a lower longitudinal beam 61 and a longitudinal beam upper plate 62; the lower longitudinal beam 61 having an inverted U-shaped vertical cross-section; the longitudinal beam upper plate 62 and the lower longitudinal beam 61 forming a structure with a rectangular vertical cross-section; a reinforcing inner plate 63 is provided inside the longitudinal beam body 6-1; a bottom reinforcing plate 64 is further provided between the reinforcing inner plate 63 and the longitudinal beam body 6-1; a protection structure 1 is provided inside the longitudinal beam body 6-1; based on the above design, the present invention can improve the strength and anti-deformation ability of the longitudinal beam 6, and at the same time enhance its safety in extreme situations such as collisions through the internal protection structure 1.

[0094] In the present invention, the lower longitudinal beam 61 has an inverted U-shaped vertical cross-section and is the main load-bearing component of the longitudinal beam 6, providing the basic support for the structure.

[0095] The longitudinal beam upper plate 62 and the lower longitudinal beam 61 are combined to form a structure with a rectangular vertical cross-section.

[0096] This design not only ensures the strength of the longitudinal beam 6 but also reduces the weight.

[0097] Reinforcing inner plate 63: It is provided inside the longitudinal beam body 6-1 and is used to enhance the rigidity of the longitudinal beam 6 and prevent deformation when subjected to external forces.

[0098] The bottom reinforcing plate 64 is located between the reinforcing inner plate 63 and the longitudinal beam body 6-1, further enhancing the bottom structural strength of the longitudinal beam 6 and improving its anti-deformation ability.

[0099] Support block 11: The core component of the protection structure 1 is used to provide additional support inside the longitudinal beam 6.

[0100] Bonding adhesive layer 12: It includes a lateral bonding adhesive layer 12, an upper bonding adhesive layer 123 and a lower bonding adhesive layer 121, and is used to firmly bond the support block 11 inside the longitudinal beam body 6-1.

[0101] The adhesive layers 12 of different layers can be designed with different thicknesses according to the force requirements to optimize the structural performance.

[0102] By strengthening the design of the inner plate 63 and the bottom reinforcing plate 64, the rigidity of the longitudinal beam 6 is significantly improved, so that it can better resist deformation when subjected to external forces.

[0103] The support blocks 11 and the adhesive layer 12 in the protective structure 1 further enhance the internal support capability of the longitudinal beam 6, especially when subjected to force in the Y direction.

[0104] The U-shaped cross-section design of the longitudinal beam 6 reduces weight while ensuring strength, which is in line with the design trend of lightweight automobiles.

[0105] The multi-layer design of the adhesive layer 12 can be optimized according to the force requirements of different parts, thereby improving the overall performance of the structure.

[0106] The design of the protective structure 1 can provide additional protection in extreme situations such as collisions, reduce the deformation of the longitudinal beam 6, and thus protect the safety of people in the vehicle.

[0107] The design of the adhesive layer 12 of the protective structure 1 avoids complicated welding processes, reduces production costs, and improves production efficiency.

[0108] In addition, due to the arrangement of the bottom reinforcement plate 64, it is difficult to arrange traditional sheet metal reinforcements in the area above the bottom reinforcement plate 64 of the longitudinal beam 6 in the present invention; because the vertical cross-section of the bottom reinforcement plate 64 in the present invention is in the shape of an inverted "X"; this allows a certain hollow space to exist between the bottom reinforcement plate 64 and the reinforced inner plate 63, and the bottom reinforcement plate 64 and the reinforced inner plate 63 are also connected by welding. Based on such an arrangement, when traditional reinforcements are arranged in the secondary area, they cannot be welded again; therefore, traditional sheet metal reinforcements cannot be arranged.

[0109] Furthermore, in the present invention, the protective structure 1 is arranged at the corner of the longitudinal beam body 6 - 1 ; the corner of the longitudinal beam 6 is usually a stress concentration area.

[0110] During vehicle driving, especially when impacted by collision or uneven road surface, stress concentration is likely to occur at the corners, causing structural deformation or damage.

[0111] By arranging the protective structure 1 at the corner, the stress can be effectively dispersed and stress concentration can be avoided, thereby improving the deformation resistance and structural stability of the longitudinal beam 6.

[0112] The protective structure 1 at the corner can provide additional support for the longitudinal beam 6, thereby enhancing its anti-deformation capability when subjected to lateral (Y-direction) force.

[0113] The support block 11 and the adhesive layer 12 in the protection structure 1 can evenly disperse the force at the corner to other parts of the longitudinal beam 6, ensuring the structural stability of the entire longitudinal beam 6.

[0114] In a frontal collision or a side collision, the corner of the longitudinal beam 6 is a key stress point.

[0115] The protection structure 1 can effectively absorb and disperse the collision energy, reducing the harm to the vehicle occupants during a collision.

[0116] Through the high-temperature foaming characteristic of the adhesive layer 12, the protection structure 1 can better absorb the collision energy and improve the safety of the vehicle.

[0117] In the present invention, the protection structure 1 is arranged above the bottom reinforcement plate 64.

[0118] The bottom reinforcement plate 64 itself already provides additional support for the longitudinal beam 6. Arranging the protection structure 1 above it can further enhance the anti-deformation ability of the longitudinal beam 6.

[0119] This design can effectively disperse the stress and avoid stress concentration, thereby improving the stability of the longitudinal beam 6 when subjected to lateral and longitudinal forces.

[0120] The protection structure 1 can absorb and disperse the impact energy, reducing the direct impact on the longitudinal beam 6, thereby improving the safety of the vehicle.

[0121] During a collision, the protection structure 1 can effectively protect the longitudinal beam 6 from serious damage and reduce the potential harm to the vehicle occupants.

[0122] At the same time, due to the existence of the bottom reinforcement plate 64, only the protection structure 1 can be realized at this part of the longitudinal beam 6; traditional sheet metal reinforcement parts cannot be used normally.

[0123] Specifically:

[0124] The present invention discloses a longitudinal beam assembly, which mainly includes a longitudinal beam 6. The longitudinal beam 6 includes a longitudinal beam body 6-1; the longitudinal beam body 6-1 includes a lower longitudinal beam 61 and a longitudinal beam upper plate 62; the vertical section of the lower longitudinal beam 61 is in an inverted U shape; the longitudinal beam upper plate 62 and the lower longitudinal beam 61 form a structure with a vertical section in an O shape; a reinforcement inner plate 63 is arranged inside the longitudinal beam body 6-1; a bottom reinforcement plate 64 is also arranged between the reinforcement inner plate 63 and the longitudinal beam body 6-1; the protection structure 1 is arranged inside the longitudinal beam body 6-1.

[0125] In the frontal collision test of the protection structure 1 disclosed in the present invention, a support structure can be added to the position where the front section of the longitudinal beam 6 is bent and deformed more significantly. The adhesive on the support block 11 firmly adheres the support block 11 to the surrounding sheet metal parts after high-temperature foaming to withstand the Y-direction force.

[0126] While the ordinary sheet metal reinforcement process cannot perform welding at specific positions of the longitudinal beam 6, the protection structure 1 disclosed in the present invention can directly snap into the inside of the longitudinal beam body 6-1 to replace the traditional sheet metal reinforcement, which not only meets the production process but also meets the Y-direction force during the frontal collision.

[0127] The innovation of the present invention lies in effectively solving the problems that the front section assembly longitudinal beam 6 of the vehicle frame is bent and deformed when the vehicle body is subjected to a frontal collision, and the ordinary sheet metal reinforcement structure cannot perform welding due to process reasons.

[0128] The advantages of the present invention are conducive to the platformization of the product structure. The protection structure 1 can be made common for vehicles of the same platform. Each vehicle model only needs to add corresponding reinforcement parts in the longitudinal beam 6; this protection structure 1 does not need to modify the structure and materials of the longitudinal beam 6, minimizing the modification range of related matching parts to the greatest extent.

[0129] Specific implementation effects:

[0130] Enhance the anti-deformation ability: During a frontal collision, the front section longitudinal beam 6 of the vehicle frame is the main force-bearing component and is prone to bending deformation.

[0131] This protection structure 1 is firmly adhered to the surrounding steel plate parts by the adhesive after high-temperature foaming, can effectively resist the Y-direction force, reduce the bending deformation of the longitudinal beam 6, thereby better protecting the safety of the vehicle occupants during the collision process and reducing the risk of personnel injury caused by excessive deformation of the vehicle frame.

[0132] Optimize the collision energy absorption: A reasonable structural design helps to optimize the transmission and absorption of collision energy.

[0133] The addition of the protection structure 1 can change the distribution path of the collision force, enabling the collision energy to be more evenly dispersed to other parts of the vehicle frame, avoiding local stress concentration, and further enhancing the overall safety of the vehicle during a collision.

[0134] Production process advantages

[0135] Simplify the production process: The traditional sheet metal reinforcement process cannot perform welding in some cases, while the protection structure 1 can be directly snapped onto the front section of the longitudinal beam 6, without complex welding processes, simplifying the production process, reducing the production difficulty and cost, and improving the production efficiency.

[0136] Easy to assemble: The snap-fit method of the protection structure 1 makes its assembly process more convenient. The operator can quickly and accurately install it at the designated position on the front section of the longitudinal beam 6, reducing the assembly time and labor cost. At the same time, it is also beneficial to improve the consistency of the assembly quality.

[0137] Product platformization and versatility

[0138] Beneficial for platform design: The protection structure 1 can be made common for vehicles of the same platform. For each vehicle model, it only needs to add a frontal collision reinforcement for the longitudinal beam 6 in the front section of the longitudinal beam 6.

[0139] This means that automobile manufacturers can share this component among multiple vehicle models, reducing the types and quantities of components, lowering the costs of R & D, procurement, and inventory management, and improving production efficiency and economic benefits.

[0140] Improve product compatibility:

[0141] Due to the universality of the protection structure 1, when different vehicle models conduct frontal collision safety design, it is easier to adopt this protection structure 1 without significantly modifying the structure and materials of the longitudinal beam 6. This improves the flexibility and compatibility of product design, which is beneficial for automobile manufacturers to quickly launch new vehicle models or upgrade and improve existing vehicle models.

[0142] Structure and cost optimization

[0143] No need to modify the structure and materials of the longitudinal beam 6: Using the protection structure 1 does not require changing the structure and materials of the longitudinal beam 6 itself, minimizing the scope of modification of related mating parts.

[0144] This can not only avoid the complex design and verification work caused by modifying the structure of the longitudinal beam 6, but also reduce the additional costs brought about by material changes or structural optimization. At the same time, it is also beneficial to maintain the overall performance and quality stability of the vehicle.

[0145] Reduce material costs: Compared with traditional sheet metal reinforcement parts, under the premise of meeting safety performance requirements, the protection structure 1 may achieve the same or better reinforcement effect with less materials.

[0146] This helps to reduce the material usage, thereby reducing material costs, enabling automobile manufacturers to effectively control costs on the basis of ensuring product quality and safety.

[0147] The protection structure 1 breaks through the limitations of traditional sheet metal reinforcement parts, enabling designers to more flexibly design the frame structure and better balance the requirements of vehicle safety, lightweight, cost control, etc.

[0148] The protection structure 1 effectively solves the problems of the bending deformation of the longitudinal beam 6 of the front frame assembly when the vehicle body is subjected to a frontal collision and the inability to implement welding in the process of ordinary sheet metal reinforcement parts.

[0149] This innovation not only provides a practical technical solution for the automotive industry, but also may inspire more technological innovations and improvements, promoting the continuous development of the automotive structure design field.

[0150] Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner. As long as various non-substantial improvements are made by adopting the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A protective structure for protecting a longitudinal beam from Y-direction forces, the longitudinal beam comprising a longitudinal beam body; the longitudinal beam body is hollow inside; the longitudinal beam body has a vertical cross-section in a square shape; characterized in that: It comprises a support block, on which a bonding adhesive layer is provided; and the protective structure is arranged in the longitudinal beam.

2. A protective structure for protecting a longitudinal beam from Y-direction forces according to claim 1, characterized in that: The support block comprises a block body, on which a positioning mechanism is arranged; the positioning mechanism comprises a positioning buckle arranged on the block body.

3. A protective structure for protecting a longitudinal beam from Y-direction forces according to claim 2, characterized in that: The positioning mechanism comprises at least two positioning buckles which are spaced apart from each other, and the support block is plugged into the longitudinal beam body through the positioning mechanism.

4. A protective structure for protecting a longitudinal beam from Y-direction forces according to claim 2, characterized in that: The block is provided with an embedded mechanism; the embedded mechanism comprises an embedded sink arranged on the block.

5. The protective structure for protecting the longitudinal beam from Y-direction forces according to claim 2, characterized in that: A plurality of embedded grooves are arranged on the side surface of the block body that is in contact with the inner side wall of the longitudinal beam body; and the side surface of the block body that is in contact with the inner side wall of the longitudinal beam body is in a sawtooth shape.

6. The protective structure for protecting the longitudinal beam from Y-direction forces according to claim 2, characterized in that: The block is provided with a weight-reducing trough; the weight-reducing trough is a sink; and a drainage hole is provided at the bottom of the weight-reducing trough.

7. The protective structure for protecting a longitudinal beam from Y-direction forces according to claim 1, characterized in that: The bonding layer includes a lateral bonding layer, an upper bonding layer and a lower bonding layer; the lateral bonding layer is arranged between the block and the inner wall of the longitudinal beam body; the upper bonding layer and the lower bonding layer have different layer thicknesses.

8. The protective structure for protecting the longitudinal beam from Y-direction forces according to claim 1, characterized in that: The block is also provided with a drainage channel.

9. A longitudinal beam assembly, characterized in that: It includes a longitudinal beam, which includes a longitudinal beam body; the longitudinal beam body includes a lower longitudinal beam and a longitudinal beam upper plate; the lower longitudinal beam has an inverted U-shaped vertical section; the longitudinal beam upper plate and the lower longitudinal beam form a U-shaped structure in vertical section; a reinforced inner plate is provided in the longitudinal beam body; a bottom reinforced plate is also provided between the reinforced inner plate and the longitudinal beam body; the longitudinal beam body is provided with a protective structure as described in any one of claims 1 to 7.

10. A longitudinal beam assembly according to claim 9, characterized in that: The protective structure is arranged at the corner of the longitudinal beam body.

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