Shank cross beam assembly and vehicle

Abstract

The utility model provides a shank cross beam assembly and a vehicle, and relates to the technical field of vehicle manufacturing. The shank cross beam assembly comprises a cross beam, an energy absorption box assembly, a first rotating mechanism and a second rotating mechanism, the energy absorption box assembly is rotationally connected with the cross beam and used for being connected with an auxiliary frame, the first rotating mechanism is fixedly connected with the cross beam, the second rotating mechanism is fixedly connected with the energy absorption box assembly, and the second rotating mechanism is rotationally connected with the first rotating mechanism; rotating shafts of the second rotating mechanism and the first rotating mechanism are consistent with the extending direction of the cross beam and used for driving the cross beam to rotate relative to the auxiliary frame. The shank cross beam assembly and the vehicle meet the structure, so that the relative position between the cross beam and the auxiliary frame can be changed, the situation that other structures in front engine rooms of different vehicle types interfere with the shank cross beam assembly or cannot meet the test requirement is avoided, the research and development period of the whole vehicle is shortened, and the cost of the whole vehicle is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle manufacturing, and in particular to a calf cross beam assembly and a vehicle. Background Art

[0002] During a frontal collision of a car, the front crossbeam of the car plays a major role in protecting pedestrians and reducing vehicle damage. The calf crossbeam assembly is used to protect pedestrians' calves from collisions, reduce injuries to pedestrians' calves caused by vehicle collisions, and better prevent pedestrians' calves from being rolled under the car. The calf crossbeam assembly usually includes a calf crossbeam, a reinforcement, and an energy absorption box assembly. A reinforcement is connected between the calf crossbeam and the energy absorption box assembly, so that the calf crossbeam assembly can not only collapse to produce an energy absorption reaction, but also support the pedestrian's calf to prevent the pedestrian from being rolled under the car. However, the calf crossbeam assembly cannot be adjusted. When borrowed from the same platform model, layout interference and failure to meet pedestrian protection requirements will occur. The structure of the calf crossbeam assembly needs to be redesigned or the shape adjusted, which will extend the development cycle and increase the cost of the vehicle. Utility Model Content

[0003] The purpose of the present application is to provide a calf cross beam assembly and a vehicle, which solves the problem that the calf cross beam assembly cannot be applied to a variety of vehicle models.

[0004] To achieve the purpose of this application, this application provides the following technical solutions:

[0005] In the first aspect, the present application provides a calf crossbeam assembly, which is used to connect with a subframe for pedestrian protection, and includes: a crossbeam; an energy absorption box assembly, which is rotatably connected to the crossbeam, and the energy absorption box assembly is used to connect to the subframe; a first rotating mechanism, which is fixedly connected to the crossbeam; a second rotating mechanism, which is fixedly connected to the energy absorption box assembly, and the second rotating mechanism is rotatably connected to the first rotating mechanism, and the rotating shafts of the second rotating mechanism and the first rotating mechanism are consistent with the extension direction of the crossbeam, and are used to drive the crossbeam to rotate relative to the subframe. The crossbeam rotates relative to the subframe, so that when different models are replaced, the calf crossbeam assembly is applicable to more models, avoiding interference between other structures in the front cabin of different models and the calf crossbeam assembly, and also avoiding the calf crossbeam assembly failing to meet the test requirements when applied to different models, which is conducive to reducing the research and development cycle of the whole vehicle and reducing the cost of the whole vehicle.

[0006] In one embodiment, the energy absorption box assembly includes an energy absorption box and a connecting bracket, one end of the energy absorption box is connected to the cross beam, and the other end is slidably connected to the connecting bracket along a first direction to adjust the total length of the energy absorption box assembly in the first direction, and the end of the connecting bracket away from the energy absorption box is used to connect to the subframe. The total length of the energy absorption box assembly in the first direction can be used to adjust the distance between the cross beam and the subframe in the first direction, and the lower leg cross beam assembly is controlled not to interfere with other structures in the front cabin.

[0007] In one embodiment, the energy absorption box has an energy absorption cavity, the energy absorption cavity has an opening at one end facing the connecting bracket, one end of the connecting bracket extends into the energy absorption cavity through the opening, and the connecting bracket is detachably connected to the energy absorption box. The extension amount of the connecting bracket into the energy absorption cavity is controlled, thereby controlling the total length of the energy absorption box assembly in the first direction.

[0008] In one embodiment, the energy absorption box is provided with a waist hole, the waist hole penetrates the energy absorption box in a direction perpendicular to the first direction, the waist hole extends along the first direction, and the connecting bracket and the waist hole are detachably connected. After adjusting the extension amount of the connecting bracket into the energy absorption cavity, the connecting bracket and the energy absorption box can be fixed with bolts.

[0009] In one embodiment, the connecting bracket includes a first bracket, a second bracket, a third rotating mechanism and a fourth rotating mechanism, the first bracket and the energy absorption box are detachably connected, the third rotating mechanism and the first bracket are fixedly connected, the fourth rotating mechanism and the second bracket are fixedly connected, the third rotating mechanism and the fourth rotating mechanism are rotatably connected, and the second bracket is used to connect to the sub-frame. The first bracket and the second bracket can rotate relative to each other, so that the first bracket drives the energy absorption box to rotate relative to the sub-frame.

[0010] In one embodiment, the third rotating mechanism is provided with a first positioning portion, and the first bracket is provided with a first positioning groove at one end facing the third rotating mechanism. The first positioning portion and the first positioning groove are snap-fitted to simplify the installation process of the third rotating mechanism and the first bracket.

[0011] In one embodiment, the third rotating mechanism includes an outer hinge, the fourth rotating mechanism includes an inner hinge, and the third rotating mechanism and the fourth rotating mechanism are hinged.

[0012] In one embodiment, the beam includes a beam body and a reinforcement portion, the reinforcement portion is connected to the end of the beam body, the reinforcement portion and the beam body are fixedly connected, the reinforcement portion and the energy absorption box assembly are rotatably connected, the extension direction of the reinforcement portion is consistent with the extension direction of the beam body, the beam is provided with a first arc-shaped hole, and the reinforcement portion is provided with a second arc-shaped hole, the first arc-shaped hole and the second arc-shaped hole are connected and relatively arranged, which is beneficial for the beam body and the reinforcement portion to be docked and fixed when the beam rotates, and after aligning the first arc-shaped hole and the second arc-shaped hole, the beam body and the reinforcement portion are fixedly connected using bolts.

[0013] In one embodiment, the reinforcement portion is provided with an installation groove, the first rotating mechanism is accommodated in the installation groove, the installation groove is provided with a first positioning port, the first rotating mechanism is provided with a second positioning port on a surface facing the reinforcement portion, and the calf cross beam assembly also includes a positioning plate, one end of the positioning plate is clamped with the first positioning port, and the other end is clamped with the second positioning port, which is conducive to simplifying the installation process of the first rotating mechanism and the reinforcement portion.

[0014] In one embodiment, the second rotating mechanism is provided with a third positioning hole, and the energy absorption box assembly is provided with a protrusion at one end facing the second rotating mechanism. The protrusion is snap-fitted with the third positioning hole, which helps to simplify the installation process of the second rotating mechanism and the energy absorption box assembly.

[0015] In a second aspect, the present application further provides a vehicle, comprising a subframe and a calf cross beam assembly as described in any one of the embodiments of the first aspect, wherein an energy absorption box assembly of the calf cross beam assembly is connected to the subframe.

[0016] The calf crossbeam assembly provided in the present application includes a crossbeam and an energy absorption box assembly. The energy absorption box assembly and the crossbeam are rotatably connected. The energy absorption box assembly is used to connect the subframe, so that after a pedestrian contacts the crossbeam, the crossbeam transmits the impact force to the energy absorption box assembly, and the energy absorption box assembly deforms to achieve energy absorption and collapse, thereby reducing the impact force on the pedestrian.

[0017] The calf cross beam assembly also includes a first rotating mechanism and a second rotating mechanism, the first rotating mechanism is fixedly connected to the cross beam, the second rotating mechanism is fixedly connected to the energy absorption box assembly, the second rotating mechanism is rotatably connected to the first rotating mechanism, and the rotating shafts of the second rotating mechanism and the first rotating mechanism are consistent with the extension direction of the cross beam, which is used to drive the cross beam to rotate relative to the subframe. By making the cross beam rotate relative to the subframe, when changing different vehicle models, the rotation parameters of the first rotating mechanism and the second rotating mechanism are controlled, and the calf cross beam assembly can be applied to more vehicle models, avoiding interference between other structures in the front cabin of different vehicle models and the calf cross beam assembly, and also avoiding the calf cross beam assembly from failing to meet the test requirements when applied to different vehicle models, which is conducive to reducing the research and development cycle of the whole vehicle and reducing the cost of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic structural diagram of a calf cross member assembly and a subframe in one embodiment;

[0020] Figure 2 is an exploded view of a first rotating mechanism, a second rotating mechanism and a positioning piece in one embodiment;

[0021] Figure 3 is a schematic structural diagram of an energy absorption box according to an implementation mode;

[0022] Figure 4 is a schematic structural diagram of an energy absorption box assembly and a second rotating mechanism in one embodiment;

[0023] Figure 5 is a schematic structural diagram of a connecting bracket in one embodiment;

[0024] Figure 6 is a schematic structural diagram of a first bracket in one embodiment;

[0025] Figure 7 is an exploded view of a third rotating mechanism and a fourth rotating mechanism in one embodiment;

[0026] Figure 8 is a schematic structural diagram of a third rotating mechanism and a fourth rotating mechanism in an implementation manner;

[0027] Fig. 9 is a schematic structural diagram of a second bracket in one embodiment;

[0028] Fig.10 is a schematic structural diagram of a beam body according to an embodiment;

[0029] Fig.11 is a structural schematic diagram of a reinforcement portion of an implementation method;

[0030] Fig.12 The present invention is a schematic structural diagram of a reinforcement part, a first rotating mechanism and a positioning piece according to an embodiment.

[0031] Description of reference numerals:

[0032] 10-crossbeam, 11-crossbeam body, 111-first arc-shaped hole, 112-beam body portion, 113-beam body extension structure, 114-flange, 12-reinforcement portion, 121-second arc-shaped hole, 122-installation groove, 123-first positioning port;

[0033] 20-energy absorption box assembly, 21-energy absorption box, 211-energy absorption cavity, 212-protrusion, 213-opening, 214-waist hole, 22-connecting bracket, 221-first bracket, 222-first positioning groove, 223-second bracket, 224-second positioning portion, 225-connecting hole;

[0034] 31-first rotating mechanism, 311-second positioning port, 32-second rotating mechanism, 321-third positioning port;

[0035] 41 - third rotating mechanism, 411 - connecting portion, 412 - first positioning portion, 42 - fourth rotating mechanism, 421 - second positioning groove; 50 - positioning sheet, 60 - sub-frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] It should be understood that the term "and / or" used in this article is only a description of the same field of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] 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 indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0044] The present application embodiment provides a calf cross beam assembly, which is used to connect with the subframe 60 for pedestrian protection; wherein the calf cross beam assembly is suitable for being installed on the front side of the subframe 60 to protect pedestrians on the road during driving. Figure 1 , Figure 4 , Fig.10 and Fig.12 The lower leg cross beam assembly includes a cross beam 10 and an energy absorption box assembly 20, which are rotatably connected to the cross beam 10. The energy absorption box assembly 20 is used to connect the subframe 60, wherein at least part of the energy absorption box assembly 20 can be constructed as a hollow box-shaped structure so that the energy absorption box assembly 20 can be compressed and deformed to achieve the function of energy absorption and collapse. When a pedestrian collides with a vehicle, after the pedestrian contacts the cross beam 10, the cross beam 10 transmits the impact force to the energy absorption box assembly 20, and the energy absorption box assembly 20 is deformed to achieve energy absorption and collapse, thereby reducing the impact force on the pedestrian.

[0045] See also Figure 2 , Figure 4 and Fig.12 The calf cross beam assembly also includes a first rotating mechanism 31 and a second rotating mechanism 32. The first rotating mechanism 31 is fixedly connected to the cross beam 10, the second rotating mechanism 32 is fixedly connected to the energy absorption box assembly 20, the second rotating mechanism 32 is rotatably connected to the first rotating mechanism 31, and the rotating shafts of the second rotating mechanism 32 and the first rotating mechanism 31 are consistent with the extension direction of the cross beam 10, and are used to drive the cross beam 10 to rotate relative to the subframe 60. By rotating the cross beam 10 relative to the subframe 60, the relative position between the cross beam 10 and the subframe 60 can be changed, so that when changing different vehicle models, the rotation parameters of the first rotating mechanism 31 and the second rotating mechanism 32 are controlled, and the calf cross beam assembly can be applied to more vehicle models, avoiding interference between other structures in the front cabin of different vehicle models and the calf cross beam assembly, and also avoiding the calf cross beam assembly from failing to meet the test requirements when applied to different vehicle models, which is conducive to reducing the research and development cycle of the whole vehicle and reducing the cost of the whole vehicle.

[0046] Optional, see Figure 2 , the first rotating mechanism 31 can be an inner hinge, and the second rotating mechanism 32 can be an outer hinge. In the direction of the rotation axis of the first rotating mechanism 31 and the second rotating mechanism 32, the first rotating mechanism 31 and the second rotating mechanism 32 each have a central hinge hole and a plurality of adjustment holes evenly distributed around the hinge hole. After the first rotating mechanism 31 and the second rotating mechanism 32 are aligned through the hinge hole at the center, the hinge holes are connected by a latch. At this time, the first rotating mechanism 31 and the second rotating mechanism 32 can be relatively rotated. After the first rotating mechanism 31 and the second rotating mechanism 32 rotate a certain angle around the hinge hole at the center, the adjustment holes of the first rotating mechanism 31 and the second rotating mechanism 32 are aligned, and the adjustment holes are connected by a latch to fix the angle.

[0047] The calf cross beam assembly provided in the present application includes a cross beam 10 and an energy absorption box assembly 20. The energy absorption box assembly 20 and the cross beam 10 are rotatably connected. The energy absorption box assembly 20 is used to connect to the subframe 60, so that after a pedestrian contacts the cross beam 10, the cross beam 10 transmits the impact force to the energy absorption box assembly 20, and the energy absorption box assembly 20 is deformed to achieve energy absorption and collapse, thereby reducing the impact force on the pedestrian.

[0048] By making the calf cross beam assembly also include the first rotating mechanism 31 and the second rotating mechanism 32, the first rotating mechanism 31 is fixedly connected to the cross beam 10, the second rotating mechanism 32 is fixedly connected to the energy absorption box assembly 20, the second rotating mechanism 32 is rotatably connected to the first rotating mechanism 31, and the rotation axes of the second rotating mechanism 32 and the first rotating mechanism 31 are consistent with the extension direction of the cross beam 10, and are used to drive the cross beam 10 to rotate relative to the subframe 60. By making the cross beam 10 rotate relative to the subframe 60, when changing different vehicle models, the rotation parameters of the first rotating mechanism 31 and the second rotating mechanism 32 are controlled, so that the calf cross beam assembly can be applied to more vehicle models, avoiding interference between other structures in the front cabin of different vehicle models and the calf cross beam assembly, and also avoiding the calf cross beam assembly failing to meet the test requirements when applied to different vehicle models, which is conducive to reducing the research and development cycle of the whole vehicle and reducing the cost of the whole vehicle.

[0049] In one implementation, see Figure 1 , Figure 3 , Figure 4 and Figure 5 The energy absorption box assembly 20 includes an energy absorption box 21 and a connecting bracket 22. One end of the energy absorption box 21 is connected to the crossbeam 10, and the other end is slidably connected to the connecting bracket 22 along a first direction to adjust the total length of the energy absorption box assembly 20 in the first direction. The end of the connecting bracket 22 away from the energy absorption box 21 is used to connect to the subframe 60. The first direction is parallel to Figure 1 The distance between the cross beam 10 and the sub-frame 60 in the first direction can be adjusted by the total length of the energy absorbing box assembly 20 in the first direction.

[0050] By making the energy absorption box 21 slidably connected to the connecting bracket 22, adjusting the distance between the cross beam 10 and the sub-frame 60 in the first direction, and controlling the rotation parameters of the first rotating mechanism 31 and the second rotating mechanism 32, the cross beam 10 can be moved relative to the sub-frame 60. Figure 1 When the calf cross beam assembly is used on different models, it can be controlled not to interfere with other structures in the front cabin, and the calf cross beam assembly can be controlled to meet the test requirements, thereby reducing the vehicle development cycle and vehicle cost.

[0051] In one implementation, see Figure 3 , Figure 4 and Figure 5 The energy absorbing box 21 has an energy absorbing cavity 211, and one end of the energy absorbing cavity 211 facing the connecting bracket 22 has an opening 213. One end of the connecting bracket 22 extends into the energy absorbing cavity 211 through the opening 213, and the connecting bracket 22 is detachably connected to the energy absorbing box 21. That is, by extending the connecting bracket 22 into the energy absorbing cavity 211, the connecting bracket 22 and the energy absorbing box 21 are slidably connected, so that the extension amount of the connecting bracket 22 into the energy absorbing cavity 211 is controlled, thereby controlling the total length of the energy absorbing box assembly 20 in the first direction.

[0052] Optionally, the energy absorption box 21 is composed of an upper and lower part, both of which have a flange 114 structure. The energy absorption box 21 is formed by aligning and splicing the flange 114 structures of the upper and lower parts and then welding them, so that the energy absorption box 21 is a box-like structure with a hollow interior.

[0053] Optional, see Figure 3 , Figure 4 and Figure 5 The energy absorbing box 21 is provided with a waist hole 214, which penetrates the energy absorbing box 21 in a direction perpendicular to the first direction, and the waist hole 214 extends in the first direction. The waist hole 214 is arranged on a side of the energy absorbing box 21 close to the connecting bracket 22, and the connecting bracket 22 and the waist hole 214 are detachably connected. A connecting hole 225 is provided at the front of the front end of the connecting bracket 22, and the connecting hole 225 penetrates the connecting bracket 22 in a direction perpendicular to the first direction. When the front end of the connecting bracket 22 extends into the opening 213 of the energy absorbing box 21, the connecting hole 225 and the waist hole 214 are connected, and within a certain distance range of sliding of the connecting bracket 22 and the energy absorbing box 21 in the first direction, the connecting hole 225 and the waist hole 214 are always connected. After adjusting the extension amount of the connecting bracket 22 into the energy absorbing cavity 211, the connecting hole 225 and the waist hole 214 can be fixed with bolts to make the connecting bracket 22 and the energy absorbing box 21 fixedly connected.

[0054] In one implementation, see Figure 6 , Figure 7 , Figure 8 and Fig. 9 The connecting bracket 22 includes a first bracket 221, a second bracket 223, a third rotating mechanism 41 and a fourth rotating mechanism 42. The first bracket 221 and the energy absorbing box 21 are detachably connected, that is, the first bracket 221 and the energy absorbing box 21 are slidably connected. After adjusting the extension amount of the first bracket 221 into the energy absorbing cavity 211, the first bracket 221 and the energy absorbing box 21 are connected.

[0055] The third rotating mechanism 41 is fixedly connected to the first bracket 221, the fourth rotating mechanism 42 is fixedly connected to the second bracket 223, the third rotating mechanism 41 is rotatably connected to the fourth rotating mechanism 42, and the second bracket 223 is used to connect to the sub-frame 60, so that the first bracket 221 and the second bracket 223 can rotate relative to each other, so that the first bracket 221 drives the energy absorption box 21 to rotate relative to the sub-frame 60.

[0056] The third rotating mechanism 41, the fourth rotating mechanism 42, the first rotating mechanism 31 and the second rotating mechanism 32 work together to enable the energy absorption box 21 and the cross beam 10 to rotate respectively relative to the subframe 60, so that when the calf cross beam assembly is used on different vehicle models, interference between other structures in the front cabin and the energy absorption box 21 or the cross beam 10 is avoided. At the same time, the adjustable range of the energy absorption box 21 and the cross beam 10 is expanded, which is further beneficial for the calf cross beam assembly to meet the test requirements, thereby helping to reduce the research and development cycle of the whole vehicle and reduce the cost of the whole vehicle.

[0057] In one implementation, see Figure 6 and Figure 7 The third rotating mechanism 41 is provided with a first positioning portion 412, and the first bracket 221 is provided with a first positioning groove 222 at one end facing the third rotating mechanism 41. The first positioning portion 412 and the first positioning groove 222 are engaged, which is conducive to simplifying the installation process of the third rotating mechanism 41 and the first bracket 221. After the third rotating mechanism 41 and the first bracket 221 are positioned and connected, the first positioning portion 412 and the first positioning groove 222 can be welded and fixed. Optionally, the third rotating mechanism 41 includes a connecting portion 411, and the first positioning portion 412 is arranged on the connecting portion 411. When the third rotating mechanism 41 and the first bracket 221 are connected, the connecting portion 411 and the first bracket 221 are first positioned and connected, so that the third rotating mechanism 41 and the first bracket 221 are positioned and connected.

[0058] Similarly, the fourth rotating mechanism 42 is provided with a second positioning groove 421, and the second bracket 223 is provided with a second positioning portion 224. The second positioning portion 224 and the second positioning groove 421 are engaged with each other, which is conducive to simplifying the installation process of the fourth rotating mechanism 42 and the second bracket 223. After the fourth rotating mechanism 42 and the second bracket 223 are positioned and connected, the second positioning portion 224 and the second positioning groove 421 can be welded and fixed.

[0059] Optionally, the third rotating mechanism 41 includes an external hinge, the fourth rotating mechanism 42 includes an internal hinge, and the third rotating mechanism 41 and the fourth rotating mechanism 42 are hinged. In the direction of the rotation axis of the third rotating mechanism 41 and the fourth rotating mechanism 42, the third rotating mechanism 41 and the fourth rotating mechanism 42 each have a central hinge hole and a plurality of adjustment holes evenly distributed around the hinge hole. After the third rotating mechanism 41 and the fourth rotating mechanism 42 are aligned through the hinge hole at the center, the hinge holes are connected by a latch. At this time, the third rotating mechanism 41 and the fourth rotating mechanism 42 can be relatively rotated. After the third rotating mechanism 41 and the fourth rotating mechanism 42 rotate a certain angle around the hinge hole at the center, the adjustment holes of the third rotating mechanism 41 and the fourth rotating mechanism 42 are aligned, and the adjustment holes are connected by a latch to fix the angle.

[0060] Optionally, the connecting portion 411 and the outer hinge may not be an integrated structure, and a connecting groove may be provided on the outer hinge, and the connecting portion 411 and the connecting groove are clamped together. After the connecting portion 411 and the outer hinge are positioned and connected, the connecting portion 411 and the connecting groove may be welded and fixed. In this case, the components on the calf cross beam assembly are modularly connected, and when some components fail due to fatigue, only specific components may be replaced, which is conducive to reducing maintenance costs.

[0061] In one implementation, see Figure 1 , Fig.10 and Fig.11 The cross beam 10 includes a cross beam body 11 and a reinforcement part 12. The reinforcement part 12 is connected to the end of the cross beam body 11. The reinforcement part 12 is fixedly connected to the cross beam body 11. There are at least two reinforcement parts 12, and at least two reinforcement parts 12 are respectively located at both ends of the cross beam body 11. The reinforcement part 12 improves the bending resistance of the cross beam 10 and improves the structural strength. The reinforcement part 12 cooperates with the cross beam body 11 to achieve greater impact force collapse absorption and enhance the protection of pedestrians.

[0062] The reinforcement part 12 and the energy absorption box assembly 20 are rotatably connected, and the extension direction of the reinforcement part 12 is consistent with the extension direction of the beam body 11. The beam 10 is provided with a first arc hole 111, and the reinforcement part 12 is provided with a second arc hole 121. The first arc hole 111 and the second arc hole 121 are connected and arranged relatively, which is beneficial for the beam body 11 and the reinforcement part 12 to be docked and fixed when the beam 10 rotates. After aligning the first arc hole 111 and the second arc hole 121, the beam body 11 and the reinforcement part 12 are fixedly connected with bolts.

[0063] During the actual installation process, the reinforcement portion 12 is inclined toward the rear of the vehicle body relative to the cross beam body 11, so that the reinforcement plate can provide certain protection to pedestrians on the left and right sides of the vehicle body, thereby ensuring the safety of pedestrians walking sideways.

[0064] Optionally, the cross beam body 11 is composed of a beam body portion 112 and a beam body extension structure 113. The beam body portion 112 and the beam body extension structure 113 are stamped integrally, and a flange 114 is left at the connection between the beam body portion 112 and the beam body extension structure 113, which is conducive to improving the strength of the cross beam body 11, so that the cross beam body 11 can support the calves of pedestrians, prevent pedestrians from being rolled under the vehicle, and better protect pedestrians.

[0065] In one implementation, see Figure 2 , Fig.11 and Fig.12 The reinforcement part 12 is provided with a mounting groove 122, the first rotating mechanism 31 is accommodated in the mounting groove 122, the mounting groove 122 is provided with a first positioning hole 123, the surface of the first rotating mechanism 31 facing the reinforcement part 12 is provided with a second positioning hole 311, and the calf cross beam assembly also includes a positioning piece 50, one end of the positioning piece 50 is engaged with the first positioning hole 123, and the other end is engaged with the second positioning hole 311. The first rotating mechanism 31 is fixedly connected to the reinforcement part 12 through the positioning piece 50, and the positioning piece 50 is respectively positioned with the first rotating mechanism 31 and the reinforcement part 12, which is conducive to simplifying the installation process of the first rotating mechanism 31 and the reinforcement part 12. After the first rotating mechanism 31, the positioning piece 50 and the reinforcement part 12 are positioned and connected, the three can be welded and fixed.

[0066] Optionally, the reinforcement part 12 includes a connecting plate and an extension plate, which are integrally formed and then bent after stamping. Before stamping, the mounting groove 122 is first punched out, and after forming, the corresponding second arc hole 121 and the first positioning opening 123 are punched out. The connecting plate of the reinforcement part 12 is aligned and fixedly connected with the crossbeam body 11 through the second arc hole 121, and the first positioning opening 123 is used to position and place the positioning sheet 50 and the first rotating mechanism 31, and can be welded and fixed after positioning.

[0067] Optional, see Figure 2 , Figure 3 and Figure 4 The second rotating mechanism 32 is provided with a third positioning hole 321, and the end of the energy absorbing box assembly 20 facing the second rotating mechanism 32 is provided with a protrusion 212, and the protrusion 212 and the third positioning hole 321 are engaged, which is conducive to simplifying the installation process of the second rotating mechanism 32 and the energy absorbing box assembly 20. After the second rotating mechanism 32 and the energy absorbing box assembly 20 are positioned and connected, the protrusion 212 and the third positioning hole 321 can be welded and fixed.

[0068] This application also provides a vehicle, see Figure 1 , including a subframe 60 and the calf cross beam assembly described in any one of the implementation schemes of the first aspect, and the energy absorption box assembly 20 of the calf cross beam assembly is connected to the subframe 60.

[0069] It can be understood that the vehicle in this embodiment has the calf cross beam assembly in the above-mentioned embodiment. Therefore, the vehicle in this embodiment has all the technical effects of the calf cross beam assembly in the above-mentioned embodiment. Since the technical effects of the calf cross beam assembly have been fully explained in the above-mentioned embodiment, they will not be repeated here.

[0070] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example" or "specific example" etc. means 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 application. In this specification, the schematic representations 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 one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0071] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A calf crossbeam assembly, used to connect with a subframe for pedestrian protection, characterized in that: include: beam; An energy absorption box assembly is rotatably connected to the crossbeam, and the energy absorption box assembly is used to connect to the subframe; A first rotating mechanism, fixedly connected to the crossbeam; The second rotating mechanism is fixedly connected to the energy absorption box assembly, the second rotating mechanism is rotationally connected to the first rotating mechanism, and the rotating axes of the second rotating mechanism and the first rotating mechanism are consistent with the extension direction of the crossbeam, so as to drive the crossbeam to rotate relative to the sub-frame.

2. The calf cross beam assembly according to claim 1, characterized in that: The energy absorption box assembly includes an energy absorption box and a connecting bracket. One end of the energy absorption box is connected to the crossbeam, and the other end is slidably connected to the connecting bracket along a first direction to adjust the total length of the energy absorption box assembly in the first direction. The end of the connecting bracket facing away from the energy absorption box is used to connect to the subframe.

3. The calf cross beam assembly according to claim 2, characterized in that: The energy absorption box has an energy absorption cavity, and one end of the energy absorption cavity facing the connecting bracket has an opening. One end of the connecting bracket extends into the energy absorption cavity through the opening, and the connecting bracket is detachably connected to the energy absorption box.

4. The calf cross beam assembly according to claim 3, characterized in that: The energy absorbing box is provided with a waist hole, the waist hole penetrates the energy absorbing box along a direction perpendicular to the first direction, the waist hole extends along the first direction, and the connecting bracket and the waist hole are detachably connected.

5. The calf cross beam assembly according to any one of claims 2 to 4, characterized in that: The connecting bracket includes a first bracket, a second bracket, a third rotating mechanism and a fourth rotating mechanism. The first bracket and the energy absorption box are detachably connected, the third rotating mechanism and the first bracket are fixedly connected, the fourth rotating mechanism and the second bracket are fixedly connected, the third rotating mechanism and the fourth rotating mechanism are rotatably connected, and the second bracket is used to be connected to the subframe.

6. The calf cross beam assembly according to claim 5, characterized in that: The third rotating mechanism is provided with a first positioning portion, and one end of the first bracket facing the third rotating mechanism is provided with a first positioning groove, and the first positioning portion is engaged with the first positioning groove.

7. The calf cross beam assembly according to claim 6, characterized in that: The third rotating mechanism includes an outer hinge, the fourth rotating mechanism includes an inner hinge, and the third rotating mechanism and the fourth rotating mechanism are hinged.

8. The calf cross beam assembly according to any one of claims 1 to 4, characterized in that: The crossbeam includes a crossbeam body and a reinforcement portion, wherein the reinforcement portion is connected to the end of the crossbeam body, the reinforcement portion and the crossbeam body are fixedly connected, the reinforcement portion and the energy absorption box assembly are rotatably connected, the extension direction of the reinforcement portion is consistent with the extension direction of the crossbeam body, the crossbeam is provided with a first arc-shaped hole, the reinforcement portion is provided with a second arc-shaped hole, and the first arc-shaped hole and the second arc-shaped hole are connected and arranged opposite to each other.

9. The calf cross beam assembly according to claim 8, characterized in that: The reinforcement portion is provided with an installation groove, the first rotating mechanism is accommodated in the installation groove, the installation groove is provided with a first positioning port, the surface of the first rotating mechanism facing the reinforcement portion is provided with a second positioning port, the calf cross beam assembly also includes a positioning plate, one end of the positioning plate is clamped with the first positioning port, and the other end is clamped with the second positioning port.

10. The calf cross beam assembly according to claim 9, characterized in that: The second rotating mechanism is provided with a third positioning opening, and the energy absorbing box assembly is provided with a protrusion at one end facing the second rotating mechanism, and the protrusion is engaged with the third positioning opening.

11. A vehicle, characterized in that: It comprises a subframe and the calf cross beam assembly as claimed in any one of claims 1 to 10, wherein the energy absorption box component of the calf cross beam assembly is connected to the subframe.

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