Vehicle front force transmission structure beneficial to collision energy absorption

Abstract

The invention discloses a vehicle front force transfer structure beneficial to collision energy absorption, comprising: a connecting bracket having a first connecting portion and a second connecting portion distributed up and down along the height direction, the first connecting portion being connected below the second connecting portion, and the first connecting portion defining a first connecting surface and a second connecting surface opposite to each other along the length direction; the energy absorption box is fixedly connected to the first connecting surface; the front end of the front longitudinal beam is fixedly connected to the second connecting face, and the front longitudinal beam corresponds to the energy absorption box in the length direction. The front end of the shotgun beam is fixedly connected with the second connecting part, and the shotgun beam is correspondingly arranged above the front longitudinal beam in the height direction. The energy absorption box, the front longitudinal beam and the shotgun beam are connected into a whole through the connecting support, and the strength of the connecting area of the energy absorption box can be effectively improved; meanwhile, the front longitudinal beam and the shotgun beam are correspondingly arranged in the height direction and can fully deform without mutual interference, the energy absorption effect is good, deformation of the passenger compartment can be effectively reduced, and safety of passengers is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle structures, and in particular to a vehicle front force transmission structure that is beneficial to collision energy absorption. Background Art

[0002] When a vehicle collides head-on with an object, the deformation of the vehicle's primary front load-bearing structure is necessary to fully absorb the energy generated by the collision, providing maximum protection for the vehicle's occupants. Currently, the primary deformable energy-absorbing component at the front of a vehicle is the crash box. The crash box area (including the crash box body and its connections) serves as a critical force transmission node and requires sufficient collapse and deformation to absorb energy in the early stages of a collision.

[0003] However, the related technology simply connects the energy box between the anti-collision beam and the front longitudinal beam to ensure an integral connection. The energy box has no force-transmitting connection with other components, such as the shotgun beam (the longitudinal beam on the outside of the front engine compartment used to mount the front fenders). This causes the energy box connection area to deform too quickly in the early stages of a vehicle collision, preventing the energy box from fully collapsing and significantly reducing its energy absorption effectiveness. In this case, the longitudinal impact force of the collision, without being effectively mitigated, will be directly applied to the passenger compartment through the chassis and longitudinal beams, causing the passenger compartment to deform and intrude upon and compress the occupants' living space, endangering their lives. Summary of the Invention

[0004] In view of the above problems, an embodiment of the present invention provides a vehicle front force transmission structure that is conducive to collision energy absorption, which can simultaneously transmit the collision impact force in the longitudinal direction of the vehicle body to the front longitudinal beam and shotgun beam, effectively improving the collision energy absorption effect of the front cabin.

[0005] According to one aspect of an embodiment of the present invention, a vehicle front force transmission structure that is conducive to collision energy absorption is provided, including: a connecting bracket, having a first connecting portion and a second connecting portion distributed up and down along the height direction, wherein the first connecting portion is connected to the bottom of the second connecting portion, and the first connecting portion defines a first connecting surface and a second connecting surface opposite to each other along the length direction; an energy absorption box, fixedly connected to the first connecting surface; a front longitudinal beam, the front end of the front longitudinal beam is fixedly connected to the second connecting surface and corresponds to the energy absorption box along the length direction; and a shotgun beam, the front end of the shotgun beam is fixedly connected to the second connecting portion and is correspondingly arranged above the front longitudinal beam along the height direction.

[0006] In an exemplary embodiment of the present invention, the connecting bracket also includes: a first connecting plate, which is perpendicular to the second connecting surface and extends along the height direction; a second connecting plate, which is perpendicular to the second connecting surface and is spaced apart in parallel with the first connecting plate along the width direction; wherein, the front end of the front longitudinal beam is open, and the longitudinal beam inner plate of the open end of the front longitudinal beam is abutted against the plate surface of the first connecting plate and is fixedly connected to the first connecting plate; the longitudinal beam outer plate of the open end of the front longitudinal beam is abutted against the plate surface of the second connecting plate and is fixedly connected to the second connecting plate.

[0007] In an exemplary embodiment of the present invention, a plurality of first reinforcing ribs are provided between the first connecting plate and the second connecting plate, and the plurality of first reinforcing ribs are arranged at intervals along the height direction.

[0008] In an exemplary embodiment of the present invention, the front force transmission structure of the vehicle also includes: a first support member, which is obliquely supported between the first connecting portion and the front longitudinal beam; wherein the first end of the first support member is connected to the second connecting surface, and the second end of the first support member is connected to the longitudinal beam outer plate of the front longitudinal beam.

[0009] In an exemplary embodiment of the present invention, the second connecting surface is further provided with a plurality of second reinforcing ribs and a third reinforcing rib, and the plurality of second reinforcing ribs and the third reinforcing ribs are cross-connected to each other to form a grid-shaped reinforcing rib portion; wherein, one side of the reinforcing rib portion is connected to the side of the second connecting plate away from the first connecting plate, and the first end of the first support member is connected to the reinforcing rib portion.

[0010] In an exemplary embodiment of the present invention, the interior of the reinforcing rib portion has a grid-shaped accommodating space, and a connecting column is constructed in the accommodating space. One end of the connecting column is connected to the second connecting surface along the length direction, and the other end is fixedly connected to the first end of the first support member.

[0011] In an exemplary embodiment of the present invention, the connecting bracket also includes: a third connecting plate, which is perpendicularly arranged on the side of the second connecting portion away from the energy absorption box along the length direction; the front end of the shotgun beam is open, the front end surface of the open end of the shotgun beam abuts against the second connecting portion, and the lower end surface of the open end of the shotgun beam is abutted against the upper plate surface of the third connecting plate and is fixedly connected to the third connecting plate.

[0012] In an exemplary embodiment of the present invention, the force transmission structure at the front of the vehicle also includes: a second support member, which is obliquely supported between the second connecting portion and the shotgun beam; wherein, one end of the second support member abuts against the second connecting portion, and the lower end surface of the second support member used to abut against one end of the second connecting portion is abutted against the upper plate surface of the third connecting plate and fixedly connected to the third connecting plate; the other end of the second support member is connected to the outer side wall of the shotgun beam.

[0013] In an exemplary embodiment of the present invention, the second support member is used to abut one end of the second connecting portion and extend along the width direction to form a covering surface, the covering surface covers the open end of the shotgun beam, and the front end surface of the open end of the shotgun beam is abutted and fixedly connected to the second connecting portion through the covering surface.

[0014] In an exemplary embodiment of the present invention, a plurality of fourth reinforcing ribs are provided on a side of the second connecting portion away from the shotgun beam along the length direction, and the plurality of fourth reinforcing ribs are arranged to cross each other.

[0015] The present invention connects the energy absorption box, the front longitudinal beam, and the shotgun beam into a whole through a connecting bracket, which can effectively increase the node strength of the energy absorption box connection area, making the energy absorption box collapse more thoroughly and the energy absorption effect more sufficient. At the same time, the front longitudinal beam corresponds to the energy absorption box in the length direction, while the front longitudinal beam corresponds to the shotgun beam in the height direction, which can make the front longitudinal beam and the shotgun beam form two independent force transmission paths extending along the longitudinal direction of the vehicle body. The strong rigidity of the front longitudinal beam is used to withstand the greater collision energy, and the shotgun beam is used to share the smaller collision energy. At this time, under a 100% frontal collision condition, the collision impact force in the longitudinal direction of the vehicle body can be transmitted to the front longitudinal beam and the shotgun beam at the same time, so that the energy absorption space of the two as force transmission paths will not produce space occupation due to the order of deformation, nor will they interfere with each other in the lateral direction of the vehicle body, resulting in insufficient deformation, effectively reducing the possibility of deformation and intrusion of the passenger compartment.

[0016] The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to more clearly understand the technical means of the embodiments of the present invention, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a vehicle front force transmission structure according to an embodiment of the present invention is shown; Figure 2 A schematic diagram showing the connection between the connecting bracket and the energy absorption box according to an embodiment of the present invention is shown; Figure 3 A schematic diagram showing the connection between the connecting bracket and the front longitudinal beam according to an embodiment of the present invention is shown; Figure 4 A schematic structural diagram of a connecting bracket according to an embodiment of the present invention is shown; Figure 5 A schematic diagram showing the connection between the connecting bracket and the longitudinal beam inner plate according to an embodiment of the present invention is shown; Figure 6 A schematic diagram showing the connection between the connecting bracket and the longitudinal beam outer plate according to an embodiment of the present invention is shown; Figure 7 The schematic diagram of the connection between the connecting bracket and the shotgun beam according to the embodiment of the present invention is shown. Figure 1 ; Figure 8 A schematic diagram showing the connection between the connecting bracket and the second support member according to an embodiment of the present invention is shown; Figure 9 The schematic diagram of the connection between the connecting bracket and the shotgun beam according to the embodiment of the present invention is shown. Figure 2 .

[0019] Description of Figure Numbers: 1-connecting bracket, 11-first connecting part, 111-first connecting surface, 112-second connecting surface, 12-second connecting part, 13-first connecting plate, 14-second connecting plate, 15-first reinforcing rib, 16-reinforcing rib part, 161-second reinforcing rib, 162-third reinforcing rib, 163-connecting column, 17-third connecting plate, 171-support plate, 18-fourth reinforcing rib, 19-rib structure, 2-energy absorption box, 21-flange plate, 3-front longitudinal beam, 31-longitudinal beam inner plate, 32-longitudinal beam outer plate, 4-shotgun beam, 5-first support member, 51-first end, 52-second end, 6- second support member, 61- covering surface, x-length direction, y-width direction, z-height direction.

[0020] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0022] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, it will be appreciated by those skilled in the art that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and are not to be construed as limiting the present invention.

[0024] In addition, the directions or positional relationships indicated by “front”, “back”, “left”, “right”, “up” and “down” mentioned in the embodiments of the present invention are based on the directions or positional relationships shown in the accompanying drawings; the x direction is the length direction, wherein the direction pointed by the arrow is “front”, and vice versa is “back”; the y direction is the width direction, wherein the direction pointed by the arrow is “left”, and vice versa is “right”; the z direction is the height direction, wherein the direction pointed by the arrow is “up”, and vice versa is “down”. The “inside” and “outside” mentioned in the embodiments of the present application are defined based on the outline of the corresponding components. It can be understood that the above-mentioned directions or positional relationships are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0025] like Figure 1 As shown, this embodiment provides a vehicle front force transmission structure that is conducive to collision energy absorption, including a connecting bracket 1, an energy absorbing box 2, a front longitudinal beam 3 and a shotgun beam 4; the connecting bracket 1 has a first connecting portion 11 and a second connecting portion 12 distributed up and down along the height direction z, the first connecting portion 11 is connected to the bottom of the second connecting portion 12, and the first connecting portion 11 is defined by a first connecting surface 111 and a second connecting surface 112 opposite to each other along the length direction x; the energy absorbing box 2 and the front longitudinal beam 3 are connected to the first connecting portion 11, wherein the energy absorbing box 2 is fixedly connected to the first connecting surface 111, and the front end of the front longitudinal beam 3 is fixedly connected to the second connecting surface 112, and corresponds to the energy absorbing box 2 along the length direction x; the shotgun beam 4 is located on the same side of the connecting bracket 1 as the front longitudinal beam 3 along the length direction x, and is arranged above the front longitudinal beam 3 along the height direction z, and the front end of the shotgun beam 4 is fixedly connected to the second connecting portion 12.

[0026] In this way, the energy box 2, front longitudinal beam 3, and shotgun beam 4 can be connected into a single unit via the connecting bracket 1, effectively increasing the strength of the connection area of the energy box 2. At the same time, the front longitudinal beam 3 corresponds to the energy box 2 in the length direction x, while the front longitudinal beam 3 and shotgun beam 4 correspond in the height direction z. This allows the front longitudinal beam 3 and shotgun beam 4 to form two independent force transmission paths extending along the longitudinal direction of the vehicle body, i.e., the length direction x. The strong rigidity of the front longitudinal beam 3 is used to withstand the greater collision energy, while the shotgun beam 4 is used to share the smaller collision energy. At this point, in a 100% frontal collision condition, the longitudinal impact force of the vehicle body can be transmitted simultaneously to the front longitudinal beam 3 and shotgun beam 4. The energy absorption space of the two force transmission paths will not be occupied due to the order of deformation, nor will they interfere with each other in the transverse direction of the vehicle body, i.e., the width direction y, resulting in insufficient deformation. This effectively reduces the possibility of deformation and intrusion into the passenger compartment.

[0027] Specifically, if Figure 1 and Figure 2 As shown, the connecting bracket 1 can be an integrally formed cast aluminum part with a certain structural strength and light weight, and the first connecting portion 11 and the second connecting portion 12 are two components of the connecting bracket 1 connected vertically along the height direction z. The front end of the energy absorption box 2 is used to connect to the anti-collision beam, and the rear end of the energy absorption box 2 is attached to the first connecting surface 111 of the first connecting portion 11 through a flange plate 21. Bolt connection holes are correspondingly opened on the circumference of the flange plate 21 and the first connecting surface 111. In this way, the flange plate 21 and the first connecting surface 111 are connected by a bolt assembly, thereby achieving a fixed connection between the energy absorption box 2 and the first connecting portion 11. The front longitudinal beam 3 and the shotgun beam 4 are located on the side where the second connecting surface 112 is located, and the shotgun beam 4 is located above the front longitudinal beam 3. The fixed connection method between the front end of the front longitudinal beam 3 and the second connecting surface 112 includes but is not limited to setting a flange at the front end of the front longitudinal beam 3 and connecting its flange to the second connecting surface 112 by a bolt assembly to achieve fixation. It is understood that in other embodiments, the front end of the front longitudinal beam 3 can also be fixed to the second connecting surface 112 by welding. Similarly, the front end of the shotgun beam 4 and the second connecting portion 12 can also be fixed by providing a flange and connecting them by bolts or by welding.

[0028] In this way, the front longitudinal beam 3, shotgun beam 4, and crash box 2 are connected into a single integral structure, creating a continuous force transmission path. This helps the crash box 2 fully collapse and achieves better energy absorption. Furthermore, the front longitudinal beam 3 and shotgun beam 4 correspond in height direction z and have independent force transmission paths, allowing them to fully deform without interfering with each other, resulting in better energy absorption. This reduces deformation of the passenger compartment and improves occupant safety.

[0029] In some embodiments, as Figures 3 to 6 As shown, the connecting bracket 1 further includes a first connecting plate 13 and a second connecting plate 14, wherein the first connecting plate 13 is perpendicular to the second connecting surface 112 and extends along the height direction z; the second connecting plate 14 is perpendicular to the second connecting surface 112 and extends along the height direction z, and is spaced apart from the first connecting plate 13 in the width direction y; the front end of the front longitudinal beam 3 is open, and the longitudinal beam inner plate 31 at the open end of the front longitudinal beam 3 abuts against the plate surface of the first connecting plate 13 and is fixedly connected to the first connecting plate 13; the longitudinal beam outer plate 32 at the open end of the front longitudinal beam 3 abuts against the plate surface of the second connecting plate 14 and is fixedly connected to the second connecting plate 14. It is understood that the fixing method of the longitudinal beam inner plate 31 and the first connecting plate 13, and the longitudinal beam outer plate 32 and the second connecting plate 14, includes but is not limited to bolting. Through the above arrangement, the front end of the front longitudinal beam 3 can be stably and effectively fixed on the first connecting portion 11. At the same time, the front end of the front longitudinal beam 3 can be arranged in an open shape toward the second connecting surface 112, so that the force transmission path is continuous and the force transmission effect is improved.

[0030] Specifically, if Figures 3 to 6 As shown, the front longitudinal beam 3 includes a longitudinal beam inner plate 31 and a longitudinal beam outer plate 32. The longitudinal beam inner plate 31 and the longitudinal beam outer plate 32 are connected together along the width direction y, forming a cavity between the longitudinal beam inner plate 31 and the longitudinal beam outer plate 32. The cavity extends along the length direction x to the front end of the front longitudinal beam 3, forming an opening. The first connecting plate 13 and the second connecting plate 14 can be arranged on the second connecting surface 112 of the first connecting portion 11 by integral casting. The longitudinal beam inner plate 31 and the first connecting plate 13 have two bolt connection holes, respectively, and the longitudinal beam outer plate 32 and the second connecting plate 14 have four bolt connection holes. The longitudinal beam inner plate 31 and the longitudinal beam outer plate 32 of the front longitudinal beam 3 are respectively placed against the plate surfaces of the first connecting plate 13 and the second connecting plate 14, and the longitudinal beam inner plate 31 and the first connecting plate 13, as well as the longitudinal beam outer plate 32 and the second connecting plate 14, are fixedly connected by bolt assemblies. This not only conveniently and quickly achieves a stable connection between the front longitudinal beam 3 and the first connecting portion 11, but also maintains the continuity of the force transmission path in the longitudinal direction x, thereby achieving a better force transmission effect. At the same time, after the front end of the front longitudinal beam 3 is opened and arranged toward the second connecting surface 112, the longitudinal beam inner plate 31 and the longitudinal beam outer plate 32 can deform along the width direction y under a 100% frontal collision condition without causing deformation interference with the shotgun beam 4 above. As a result, the front longitudinal beam 3 and the shotgun beam 4 can fully deform along their respective force transmission paths without interfering with each other, thereby achieving a better energy absorption effect.

[0031] Furthermore, if Figure 4As shown, a rib structure 19 is further provided at the connection point where the first connecting plate 13 is fixedly connected to the longitudinal beam inner plate 31. This rib structure 19 extends from the connection point to the second connecting surface 112 of the first connecting portion 11. The provision of the rib structure 19 further enhances the structural strength of the connection point and improves the stability of the connection between the longitudinal beam inner plate 31 and the first connecting plate 13. Similarly, a rib structure 19 is also provided at the connection point where the second connecting plate 14 is fixedly connected to the longitudinal beam outer plate 32. The provision is identical to that of the rib structure 19 of the first connecting plate 13, and will not be further described here.

[0032] In some embodiments, as Figure 4 As shown, a plurality of first reinforcing ribs 15 are provided between the first connecting plate 13 and the second connecting plate 14. The plurality of first reinforcing ribs 15 are spaced apart along the height direction z. The provision of the first reinforcing ribs 15 connects the first connecting plate 13 and the second connecting plate 14 in the width direction y, thereby improving the structural strength of the first connecting plate 13 and the second connecting plate 14. Furthermore, the first reinforcing ribs 15 transmit force between the first connecting plate 13 and the second connecting plate 14, ensuring uniform force on the first connecting plate 13 and the second connecting plate 14.

[0033] Specifically, if Figure 4 As shown, the first reinforcing rib 15 can be integrally cast and arranged on the second connecting surface 112 of the first connecting portion 11. The first reinforcing rib 15 extends along the width direction y, and its ends along the width direction y are respectively connected to the opposing surfaces of the first connecting plate 13 and the second connecting plate 14. In this way, the first reinforcing rib 15 can further share the load distributed along the length direction x, thereby improving the structural stability of the first connecting plate 13 and the second connecting plate 14.

[0034] Under the 25% offset collision condition, the collision overlap area between the collision object and the vehicle is too small to effectively absorb the energy generated by the collision. Figure 1 and Figure 3 As shown, the vehicle's front force transmission structure also includes a first support member 5, which is supported obliquely between the first connecting portion 11 and the front longitudinal beam 3. The first end 51 of the first support member 5 is connected to the second connecting surface 112, and the second end 52 of the first support member 5 is connected to the longitudinal beam outer plate 32 of the front longitudinal beam 3. This strengthens the structural strength of the outer side of the front longitudinal beam 3 (based on the vehicle body contour) through the first support member 5, optimizing the force transmission path outside the front end of the front longitudinal beam 3.

[0035] Based on the setting of the first support member 5, the collision energy generated under the 25% offset collision condition can be effectively transmitted to the outer side surface of the front end of the front longitudinal beam 3 through the first support member 5, so that the front end of the front longitudinal beam 3 is bent toward the inside of the vehicle body, realizing deformation and energy absorption in the transverse direction of the vehicle body, that is, the width direction y, and transmitting the collision energy to the non-collision side along the width direction y through other structures inside the front cabin, such as the engine or subframe, thereby reducing the collision impact force in the longitudinal direction of the vehicle body, that is, the length direction x, thereby reducing the possibility of deformation and intrusion of the passenger compartment.

[0036] Specifically, if Figure 3 As shown, the first support member 5 in this embodiment is triangular and has a circumferential flange formed on its first end 51. Bolt holes are formed in the flange and corresponding to the second connecting surface 112. The flange and the second connecting surface 112 are connected by a bolt assembly, thereby achieving a fixed connection between the first support member 5 and the first connecting portion 11. The second end 52 of the first support member 5 is also circumferentially formed with a flange. The flange of the second end 52 is welded to the longitudinal beam outer plate 32 of the front longitudinal beam 3 to achieve a fixed connection between the first support member 5 and the front longitudinal beam 3. At this time, the first support member 5 is obliquely supported on the first connecting portion 11 and the outer side of the front longitudinal beam 3, effectively transferring collision energy between the first connecting portion 11 and the front longitudinal beam 3. Preferably, the cross-section of the first support member 5 is groove-shaped, forming a cavity inside the first support member 5, which ensures that the collision impact force is transmitted while facilitating deformation and energy absorption.

[0037] It can be understood that since the first support member 5 is arranged on the outside of the front end of the front longitudinal beam 3, in order to meet the dimensional installation requirements of the first end 51 of the first support member 5 and the front end of the front longitudinal beam 3 in the width direction y, the width dimension of the first connecting portion 11 can be further widened. At the same time, the dimension of the energy absorption box 2 in the width direction y can also be further widened to be adapted to the width dimension of the first connecting portion 11, thereby further increasing the energy absorption and force transmission effect of the vehicle's front force transmission structure in the connection area of the energy absorption box 2.

[0038] In some embodiments, as Figure 3 and Figure 4As shown, the second connecting surface 112 is further provided with a plurality of second reinforcing ribs 161 and third reinforcing ribs 162. The plurality of second reinforcing ribs 161 and third reinforcing ribs 162 are cross-connected to form a grid-like reinforcing rib portion 16. One side of the reinforcing rib portion 16 is connected to the side of the second connecting plate 14 away from the first connecting plate 13, and the first end 51 of the first support member 5 is connected to the reinforcing rib portion 16. The provision of the second reinforcing ribs 161 and third reinforcing ribs 162 can further improve the structural strength of the first connecting portion 11 while ensuring the lightweight of the connecting bracket 1, allowing the energy absorption box 2 to be fully collapsed and the collision impact force to be effectively transmitted, thereby achieving a better energy absorption effect. At the same time, the reinforcing rib portion 16 is connected to the second connecting plate 14, which can further improve the structural strength of the second connecting plate 14 and ensure the stability of the connection between the second connecting plate 14 and the longitudinal beam outer plate 32 of the front longitudinal beam 3.

[0039] Specifically, if Figure 4 As shown, the second reinforcing ribs 161 and the third reinforcing ribs 162 can be arranged on the second connecting surface 112 of the first connecting portion 11 by means of integral casting, wherein the second reinforcing ribs 161 extend along the height direction z, and the third reinforcing ribs 162 extend along the width direction y to be connected to the second connecting plate 14. On the one hand, they can cross-connect with the second reinforcing ribs 161 to form a grid-like reinforcing rib portion 16, and on the other hand, they can connect the reinforcing rib portion 16 and the second connecting plate 14 as a whole, thereby improving the structural strength of the second connecting plate 14.

[0040] It should be understood that the embodiments described above with reference to the accompanying drawings are exemplary and intended to explain the arrangement of the second reinforcing ribs 161 and the third reinforcing ribs 162, and should not be construed as limiting the present application. In other embodiments, the second reinforcing ribs 161 and the third reinforcing ribs 162 may also be arranged in an oblique, cross-shaped arrangement, and the arrangement can be selected based on specific needs, which will not be further described here.

[0041] In some embodiments, as Figure 4 As shown, the interior of the reinforcing rib portion 16 has a grid-shaped accommodating space, and a connecting column 163 is constructed in the accommodating space. One end of the connecting column 163 is connected to the second connecting surface 112 along the length direction x, and the other end is fixedly connected to the first end 51 of the first support member 5. The connecting column 163 can ensure a firm connection between the first support member 5 and the first connecting portion 11, so that the collision impact force can be effectively transmitted.

[0042] Specifically, if Figure 4As shown, the connecting column 163 can be arranged on the second connecting surface 112 of the first connecting part 11 by an integral casting method. In this embodiment, there are four connecting columns 163, and the four connecting columns 163 are evenly distributed circumferentially corresponding to the first end 51 of the first support member 5; wherein, the first end 51 of the first support member 5 and the end of the connecting column 163 for connecting to the first end 51 are correspondingly provided with bolt connection holes, and the first end 51 and the connecting column 163 are connected by a bolt assembly, thereby realizing a fixed connection between the first support member 5 and the first connecting part 11.

[0043] Furthermore, if Figure 4 As shown, the connecting column 163 can be arranged against the second reinforcing rib 161 and / or the third reinforcing rib 162 , so that the structural strength of the connecting column 163 can be improved by relying on the reinforcing rib portion 16 .

[0044] Furthermore, if Figure 4 As shown, the connecting column 163 can be set at the intersection of the second reinforcing rib 161 and the third reinforcing rib 162, which can further improve the structural strength of the connecting column 163 and thus ensure the connection stability between the connecting column 163 and the first support member 5.

[0045] In some embodiments, as Figures 7 to 9 As shown, the connecting bracket 1 also includes a third connecting plate 17, which is perpendicularly arranged on the side of the second connecting portion 12 away from the energy absorption box 2 along the length direction x and extends along the width direction y; the front end of the shotgun beam 4 is open, and the front end surface of the open end of the shotgun beam 4 abuts against the second connecting portion 12, and the lower end surface of the open end of the shotgun beam 4 abuts against the upper plate surface of the third connecting plate 17 and is fixedly connected to the third connecting plate 17. Through the above arrangement, the front end of the shotgun beam 4 can be stably and effectively fixed to the second connecting portion 12. At the same time, the front end of the shotgun beam 4 can be open and arranged along the length direction x toward the second connecting portion 12, so that the force transmission path is continuous and the force transmission effect is improved.

[0046] Specifically, if Figures 7 to 9As shown, the cross-section of the shotgun beam 4 is a closed square groove, with a cavity formed within it. This cavity extends along the length direction x to the front end of the shotgun beam 4, forming an opening, which facilitates axial collapse to achieve energy absorption. The third connecting plate 17 can be integrally cast and arranged on the second connecting portion 12, extending along the width direction y. The front end surface of the open end of the shotgun beam 4 is abutted against the second connecting portion 12. At this time, the lower end surface of the open end of the shotgun beam 4 can abut against the upper plate surface of the third connecting plate 17. The lower end surface of the open end of the shotgun beam 4 and the third connecting plate 17 are provided with at least one bolt connection hole, and the upper end surface of the open end of the shotgun beam 4 is provided with at least one through hole. A bolt assembly is inserted through the through hole into the open end of the shotgun beam 4 to bolt the lower end surface of the shotgun beam 4 to the third connecting plate 17. This conveniently and quickly achieves a stable connection between the shotgun beam 4 and the third connecting plate 17, while maintaining a continuous force transmission path along the length direction x.

[0047] It is understood that the embodiments described above with reference to the accompanying drawings are exemplary and intended to explain the connection method between the shotgun beam 4 and the second connecting portion 12, and should not be construed as limiting the present application. In other embodiments, the front end surface of the shotgun beam 4 can also be closed or flanged, and fixedly connected to the second connecting portion 12 by welding or bolting to further improve the connection stability between the shotgun beam 4 and the second connecting portion 12. The selection and arrangement can be made according to specific needs, and will not be further described here.

[0048] Furthermore, if Figure 8 As shown, at least one end of the third connecting plate 17 in the width direction y can be extended upward or downward along the height direction z to form a support plate 171, thereby improving the structural strength of the third connecting plate 17.

[0049] Furthermore, if Figure 4 As shown, the second reinforcing rib 161 of the reinforcing rib portion 16 can also be extended along the height direction z to the lower plate surface of the third connecting plate 17 to connect thereto, so that the reinforcing rib portion 16 and the third connecting plate 17 are connected as a whole, thereby improving the structural strength of the third connecting plate 17.

[0050] In some embodiments, as Figure 1 、 Figures 7 to 9As shown, the vehicle's front force transmission structure also includes a second support member 6, which is supported obliquely between the second connecting portion 12 and the shotgun beam 4. One end of the second support member 6 abuts the second connecting portion 12, and the lower end surface of the second support member 6, which is used to abut the second connecting portion 12, rests on the upper surface of the third connecting plate 17 and is fixedly connected to the third connecting plate 17. The other end of the second support member 6 is connected to the outer wall of the shotgun beam 4. This strengthens the structural strength of the outer side of the shotgun beam 4 (based on the vehicle body contour) through the second support member 6, and optimizes the force transmission path outside the front end of the shotgun beam 4.

[0051] Based on the setting of the second support member 6, the collision energy generated under the 25% offset collision condition can be effectively transferred to the outer side surface of the front end of the shotgun beam 4 through the second support member 6, so that the front end of the shotgun beam 4 is bent toward the inside of the vehicle body, realizing deformation and energy absorption in the transverse direction of the vehicle body, that is, the width direction y, and transferring the collision energy to the non-collision side along the width direction y through other structures inside the front cabin, such as the engine or subframe, thereby reducing the collision impact force in the longitudinal direction of the vehicle body, that is, the length direction x, thereby reducing the possibility of deformation and intrusion of the passenger compartment.

[0052] Specifically, if Figure 9 As shown, the second support member 6 in this embodiment is in the shape of a triangular oblique support, and its cross section is groove-shaped, so as to form a cavity inside the second support member 6, which can facilitate deformation and energy absorption while ensuring that the collision impact force is transmitted. The front end of the second support member 6 is abutted against the second connecting portion 12. At this time, the second support member 6 is used to abut the lower end surface of one end of the second connecting portion 12 against the upper plate surface of the third connecting plate 17, and the lower end surface of the second support member 6 and the third connecting plate 17 are correspondingly provided with at least one bolt connection hole, and the upper end surface of the second support member 6 is correspondingly provided with at least one through hole. The bolt assembly is extended from the through hole into the interior of the second support member 6 to bolt the lower end surface of the second support member 6 to the third connecting plate 17, that is, to achieve a fixed connection between the second support member 6 and the third connecting plate 17; the second support member 6 is used to connect the shotgun beam 4 at one end thereof. A flange is formed, and the flange is welded to the outer side wall of the shotgun beam 4, that is, to achieve a fixed connection between the second support member 6 and the shotgun beam 4. At this time, the second support member 6 is obliquely supported on the second connecting portion 12 and the outer side of the shotgun beam 4, so that the collision energy can be effectively transferred between the second connecting portion 12 and the shotgun beam 4.

[0053] Furthermore, if Figure 4As shown, the connection point where the third connecting plate 17 is fixedly connected to the lower end face of the shotgun beam 4 is further provided with a rib structure 19, which extends from the connection point to the second connecting portion 12. The provision of the rib structure 19 can further improve the structural strength of the connection point and improve the connection stability between the shotgun beam 4 and the third connecting plate 17. Similarly, the connection point where the third connecting plate 17 is fixedly connected to the lower end face of the second support member 6 is also provided with a rib structure 19, and the provision method is the same as the rib structure 19 at the fixed connection point between the shotgun beam 4 and the third connecting plate 17, and will not be repeated here.

[0054] It can be understood that, based on the aforementioned embodiment, the second support member 6 can cooperate with the first support member 5. In this way, when responding to a 25% offset collision condition, the front longitudinal beam 3 and the shotgun beam 4 can provide sufficient lateral thrust to transfer the vehicle to the non-collision side, thereby greatly reducing the possibility of deformation and intrusion of the passenger compartment.

[0055] In some embodiments, as Figure 8 and Figure 9 As shown, one end of the second support member 6 is used to abut the second connecting portion 12 and extends along the width direction y to form a covering surface 61. The covering surface 61 covers the open end of the shotgun beam 4. The front end surface of the open end of the shotgun beam 4 abuts and is fixedly connected to the second connecting portion 12 through the covering surface 61. The provision of the covering surface 61 can further improve the connection stability between the shotgun beam 4 and the second connecting portion 12, and maintain the continuity of the force transmission path in the length direction x.

[0056] Specifically, if Figure 8 and Figure 9 As shown, the covering surface 61 covers the front end surface of the open end of the shotgun beam 4 and is fixedly connected to the circumference of the open end of the shotgun beam 4 by welding, thereby effectively fixing the shotgun beam 4. Four bolt connection holes are opened in the covering surface 61 and the second connecting portion 12 respectively. The covering surface 61 and the second connecting portion 12 are connected by the bolt assembly, thereby achieving a stable connection between the shotgun beam 4 and the second connecting portion 12.

[0057] In some embodiments, as Figure 7 As shown, a plurality of fourth reinforcing ribs 18 are provided on the side of the second connecting portion 12 away from the shotgun beam 4 along the length direction x. The plurality of fourth reinforcing ribs 18 are arranged to cross each other, which can further improve the structural strength of the second connecting portion 12 and effectively transmit the collision impact force.

[0058] Specifically, if Figure 7As shown, the fourth reinforcing ribs 18 can be arranged on the second connecting portion 12 by integral casting, wherein a plurality of fourth reinforcing ribs 18 are arranged in an oblique and cross-shaped manner to interconnect to form a grid-like structure, thereby significantly improving the structural strength of the second connecting portion 12. It is understood that in other embodiments, the fourth reinforcing ribs 18 can also be arranged in a cross-shaped manner in the horizontal and vertical directions, and the arrangement can be selected according to specific needs, which will not be repeated here.

[0059] It is understood that the above embodiments and the accompanying drawings of the present invention only illustrate the case where the vehicle front force transmission structure is located on the left side of the vehicle. In other embodiments, the present invention can be installed on the left side of the vehicle or on the right side of the vehicle at the same time. The vehicle front force transmission structure on the right side of the vehicle and the vehicle front force transmission structure on the left side of the vehicle are symmetrically arranged in the transverse direction of the vehicle body, that is, the width direction y. When the vehicle front force transmission structure of the present invention is implemented on the right side of the vehicle to cope with a 25% offset collision, the right front longitudinal beam 3 can bend toward the inside of the vehicle body and transfer the collision energy to the left side of the vehicle body along the width direction y through other structures inside the front cabin, thereby reducing the collision impact force in the longitudinal direction of the vehicle body, that is, the length direction x, and reducing the deformation and intrusion possibility of the passenger compartment. When the vehicle front force transmission structure of the present invention is used to cope with a 100% frontal collision condition, the collision impact force in the longitudinal direction of the vehicle body can be transmitted to the front longitudinal beams 3 and shotgun beams 4 on both sides at the same time, reasonably sharing and fully absorbing the collision impact force, effectively improving the collision safety performance of the vehicle, thereby reducing the deformation of the passenger compartment and benefiting the safety of the occupants.

[0060] It should be understood that, in the present invention, unless otherwise expressly specified or limited, terms such as "assembly" and "connection" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined. And the terms "some embodiments" and "exemplarily" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0062] The illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0063] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. A person skilled in the art may modify, replace and vary the above embodiments within the scope of the present invention. Therefore, any changes or modifications made in accordance with the claims and description of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A vehicle front force transmission structure that is beneficial to collision energy absorption, characterized in that: include: A connecting bracket having a first connecting portion and a second connecting portion distributed vertically, wherein the first connecting portion is connected below the second connecting portion, and the first connecting portion defines a first connecting surface and a second connecting surface opposite to each other in the length direction; an energy absorption box, fixedly connected to the first connecting surface; a front longitudinal beam, the front end of which is fixedly connected to the second connecting surface and corresponds to the crash box along the length direction; and A shotgun beam, the front end of which is fixedly connected to the second connecting portion, and is correspondingly arranged above the front longitudinal beam along the height direction.

2. The vehicle front force transmission structure according to claim 1, characterized in that: The connecting bracket further includes: A first connecting plate is perpendicular to the second connecting surface and extends in a height direction; The second connecting plate is perpendicular to the second connecting surface and is arranged parallel to and spaced apart from the first connecting plate in the width direction; wherein, The front end of the front longitudinal beam is open, and the longitudinal beam inner plate of the open end of the front longitudinal beam is in contact with the plate surface of the first connecting plate and is fixedly connected to the first connecting plate; the longitudinal beam outer plate of the open end of the front longitudinal beam is in contact with the plate surface of the second connecting plate and is fixedly connected to the second connecting plate.

3. The vehicle front force transmission structure according to claim 2, characterized in that: A plurality of first reinforcing ribs are provided between the first connecting plate and the second connecting plate, and the plurality of first reinforcing ribs are arranged at intervals along the height direction.

4. The vehicle front force transmission structure according to claim 2, characterized in that: The vehicle front force transmission structure further includes: The first support member is obliquely supported between the first connecting portion and the front longitudinal beam; wherein the first end of the first support member is connected to the second connecting surface, and the second end of the first support member is connected to the longitudinal beam outer plate of the front longitudinal beam.

5. The vehicle front force transmission structure according to claim 4, characterized in that: The second connecting surface is also provided with a plurality of second reinforcing ribs and third reinforcing ribs, and the plurality of second reinforcing ribs and third reinforcing ribs are cross-connected to each other to form a grid-shaped reinforcing rib portion; wherein, one side of the reinforcing rib portion is connected to the side of the second connecting plate away from the first connecting plate, and the first end of the first support member is connected to the reinforcing rib portion.

6. The vehicle front force transmission structure according to claim 5, characterized in that: The interior of the reinforcing rib portion has a grid-shaped accommodating space, and a connecting column is constructed in the accommodating space. One end of the connecting column is connected to the second connecting surface along the length direction, and the other end is fixedly connected to the first end of the first support member.

7. The vehicle front force transmission structure according to any one of claims 1 to 6, characterized in that: The connecting bracket further includes: a third connecting plate, the third connecting plate being perpendicularly arranged on a side of the second connecting portion away from the energy absorbing box along the length direction; The front end of the shotgun beam is open, the front end surface of the open end of the shotgun beam abuts against the second connecting portion, and the lower end surface of the open end of the shotgun beam abuts against the upper plate surface of the third connecting plate and is fixedly connected to the third connecting plate.

8. The vehicle front force transmission structure according to claim 7, characterized in that: The vehicle front force transmission structure further includes: A second support member is obliquely supported between the second connecting portion and the shotgun beam; wherein one end of the second support member abuts against the second connecting portion, and the lower end surface of the second support member used to abut against one end of the second connecting portion is abutted against the upper plate surface of the third connecting plate and fixedly connected to the third connecting plate; the other end of the second support member is connected to the outer wall of the shotgun beam.

9. The vehicle front force transmission structure according to claim 8, characterized in that: The second support member is used to abut one end of the second connecting portion and extends along the width direction to form a covering surface, which covers the open end of the shotgun beam. The front end surface of the open end of the shotgun beam abuts and is fixedly connected to the second connecting portion through the covering surface.

10. The vehicle front force transmission structure according to claim 7, characterized in that: A plurality of fourth reinforcing ribs are provided on a side of the second connecting portion away from the shotgun beam along the length direction, and the plurality of fourth reinforcing ribs are arranged to cross each other.

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