Front wall lower cross beam and vehicle

Abstract

The utility model discloses a front wall lower cross beam and a vehicle, and belongs to the technical field of automobiles, a beam main body, a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece of the front wall lower cross beam are of an integrated structure, that is to say, the components are of an integrated structure formed through integrated machining, and therefore the front wall lower cross beam has the high integration degree; in this way, the number of parts can be reduced, the cost for systematic design and assembly of all independent parts is reduced, and the difficulty of vehicle design is reduced. The number of parts is reduced, so that the weight of the cross beam is reduced, the weight of the whole vehicle is reduced, energy consumption and emission of harmful substances are reduced, the power performance of the whole vehicle is improved, and the endurance mileage is increased. And the number of parts is reduced, logistics management is facilitated, and the machining and manufacturing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobiles, and particularly relates to a front wall lower cross beam and a vehicle. BACKGROUND

[0002] The front wall lower cross beam is generally located between the engine compartment and the passenger compartment of the whole vehicle and below the front wall panel. For a traditional vehicle body, in order to ensure the structural requirements of this area, the stamping parts of this part of structure need to be systematically designed, which makes this part of structure more complex and leads to a higher cost. CONTENT OF THE UTILITY MODEL

[0003] In view of the above shortcomings of the prior art, the purpose of the embodiments of the present application is to provide a front wall lower cross beam to solve the technical problem that the structure of this part of the vehicle body is currently more complex, and another purpose of the embodiments of the present application is to provide a vehicle.

[0004] To achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0005] In a first aspect, the embodiments of the present application provide a front wall lower cross beam, comprising:

[0006] a beam main body, arranged to extend in a first direction;

[0007] a first connecting piece, arranged in the first direction of the beam main body, used to connect an A-pillar inner panel of a vehicle;

[0008] a second connecting piece, arranged in a second direction of the beam main body, used to connect a front longitudinal beam of the vehicle;

[0009] a third connecting piece, arranged in a third direction of the beam main body, used to connect a front wall panel of the vehicle;

[0010] a fourth connecting piece, arranged in the third direction of the beam main body and located on a side of the beam main body opposite to the second connecting piece, used to connect a front floor panel of the vehicle;

[0011] The beam main body, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are an integral structure, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In some embodiments, the front wall lower cross beam further comprises a reinforcing piece, and the reinforcing piece comprises:

[0013] a first reinforcing structure, at least partially arranged in the second direction of the beam main body and connecting the second connecting piece and the beam main body;

[0014] a second reinforcing structure, at least partially arranged on a side of the beam main body opposite to the first reinforcing structure;

[0015] At least part of the first reinforcing structure and at least part of the second reinforcing structure are positionally corresponding in the second direction.

[0016] In some embodiments, the reinforcing member is an integral structure with the beam body, the first connecting member, the second connecting member, the third connecting member, and the fourth connecting member.

[0017] In some embodiments, the second connecting member is connected with the first connecting member.

[0018] In some embodiments, the second connecting member comprises:

[0019] A first connecting structure extending from the beam body in the second direction, the first connecting structure being configured to connect a longitudinal inner panel of the front longitudinal beam;

[0020] A second connecting structure disposed between the first connecting structure and the first connecting member, and connected with the first connecting structure, the beam body, and the first connecting member respectively, the second connecting structure being configured to connect a longitudinal outer panel of the front longitudinal beam.

[0021] In some embodiments, the first connecting structure comprises a first end distanced from the beam body in the second direction, and the second connecting structure extends from the first end to the first connecting member.

[0022] In some embodiments, the second connecting structure comprises:

[0023] A first joint surface extending from the first end along a direction oblique to the second direction;

[0024] A second joint surface disposed between the first joint surface and the first connecting member, the second joint surface extending in a direction oblique to the second direction, and having an included angle with the first joint surface;

[0025] The first joint surface and the second joint surface are configured to be attached to the longitudinal outer panel respectively.

[0026] In some embodiments, the second connecting structure further comprises:

[0027] A third joint surface disposed between the first end and the first connecting member, the third joint surface being configured to be attached to the longitudinal outer panel;

[0028] The third joint surface and the first joint surface are arranged in the third direction, and / or the third joint surface and the second joint surface are arranged in the third direction.

[0029] In some embodiments, the third connecting piece comprises a fourth joint surface, which is arranged towards a side away from the second connecting piece and is used for being attached to the front floor panel, and a minimum dimension L1 of the fourth joint surface in the third direction is greater than or equal to 23 mm.

[0030] In some embodiments, the fourth connecting piece comprises a fifth joint surface, which is used for being attached to the front floor panel, and a minimum dimension L2 of the fifth joint surface in the second direction is greater than or equal to 23 mm.

[0031] In a second aspect, a vehicle is provided, which comprises the front undercross beam according to any one of the above embodiments.

[0032] One of the above technical solutions has the following advantages or beneficial effects:

[0033] The front undercross beam according to the embodiments of the present application comprises: a beam main body, which is arranged to extend in a first direction; a first connecting piece, which is arranged in the first direction of the beam main body and is used for connecting an A-pillar inner panel of a vehicle; a second connecting piece, which is arranged in a second direction of the beam main body and is used for connecting a front longitudinal beam of the vehicle; a third connecting piece, which is arranged in a third direction of the beam main body and is used for connecting a front wall panel of the vehicle; and a fourth connecting piece, which is arranged in the third direction of the beam main body and is located on a side of the beam main body away from the second connecting piece, and is used for connecting a front floor panel of the vehicle; the beam main body, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are an integral structure, and the first direction, the second direction and the third direction are perpendicular to each other. In the present application, the beam main body, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece of the front undercross beam are an integral structure, that is, these components are integrally formed as a whole structure, so that the front undercross beam has a high degree of integration, which can reduce the number of parts, reduce the cost of systematic design and assembly of each independent part, and reduce the complexity of vehicle design. Reducing the number of parts helps to reduce the weight of the cross beam, thereby promoting the weight reduction of the whole vehicle, helping to reduce energy consumption and harmful substance emissions, improving the power performance of the whole vehicle, and improving the cruising range. Reducing the number of parts also helps to manage logistics and improve manufacturing efficiency.

[0034] The vehicle according to the embodiments of the present application can comprise all the technical features and technical effects of the above-mentioned front undercross beam, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0036] Figure 1 A schematic diagram of the connection structure between the lower front crossbeam and the vehicle body structure provided in this embodiment of the application;

[0037] Figure 2 A schematic diagram showing the position of the lower front crossbeam on a vehicle, as provided in an embodiment of this application.

[0038] Figure 3 A three-dimensional structural diagram of the lower front crossbeam provided in an embodiment of this application;

[0039] Figure 4 A three-dimensional structural schematic diagram of the lower front crossbeam provided in an embodiment of this application from another perspective;

[0040] Figure 5 A top view of the lower front crossbeam provided in an embodiment of this application;

[0041] Figure 6 For along Figure 5 Schematic diagram of the cross-sectional structure along line AA;

[0042] Figure 7 A side view of the lower front crossbeam provided in an embodiment of this application;

[0043] Figure 8 A bottom view of the lower front crossbeam provided in an embodiment of this application;

[0044] Figure 9 This is a front view structural diagram of the lower front crossbeam provided in an embodiment of this application;

[0045] Figure 10 For along Figure 9 Schematic diagram of the cross-sectional structure of the middle BB line;

[0046] Figure 11 A schematic diagram of the connection structure between the lower front crossbeam and the inner plate of the longitudinal beam provided in an embodiment of this application;

[0047] Figure 12 This is a schematic diagram of the second connecting structure in the lower front crossbeam provided in an embodiment of this application;

[0048] Figure 13 A schematic diagram of the connection structure between the lower front crossbeam and the outer plate of the longitudinal beam provided in an embodiment of this application;

[0049] Figure 14 A top view schematic diagram of the connection structure between the lower front crossbeam and the outer plate of the longitudinal beam provided in an embodiment of this application;

[0050] Figure 15 A schematic diagram of the connection structure between the lower front crossbeam and the front bulkhead panel provided in an embodiment of this application;

[0051] Figure 16 A schematic view of a fourth connecting piece in the front undercross beam provided by the embodiment of the present application is shown in FIG. 1C.

[0052] 100-front undercross beam; 110-beam body; 120-first connecting piece; 130-second connecting piece; 131-first connecting structure; 1311-first end; 132-second connecting structure; 1321-first joint surface; 1322-second joint surface; 1323-third joint surface; 140-third connecting piece; 141-fourth joint surface; 150-fourth connecting piece; 151-fifth joint surface; 160-stiffener; 161-first stiffening structure; 162-second stiffening structure; 200-A pillar inner panel; 300-front longitudinal beam; 310-longitudinal beam inner panel; 320-longitudinal beam outer panel; 400-front cross beam; 500-rocker beam; 600-front floor; Y-first direction; X-second direction; Z-third direction. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] In the description of the present application, it should be understood that the terms "length", "width", "height", "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The meaning of "a plurality of" is two or more, at least one of which can be one, two or more, unless otherwise explicitly specified. The terms "mounting", "connecting", "connecting" should be interpreted broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. The terms "first", "second" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features.

[0055] In the description of the present application, the first direction, the second direction and the third direction are introduced for more clearly describing the shape and / or configuration of each component in the front lower cross beam, and the connecting relationship and / or relative position relationship between components. In the drawings, the arrow marked Y indicates the first direction Y, which is the extending direction of the beam body 110 in the front lower cross beam 100, and is also the arrangement direction of the beam body 110 and the first connecting piece 120. When the front lower cross beam 100 is assembled in the vehicle, the first direction Y corresponds to the width direction of the vehicle. In the drawings, the arrow marked X indicates the second direction X, which is perpendicular to the first direction Y, and is the arrangement direction of the beam body 110 and the first connecting piece 120. In the vehicle, the second direction X corresponds to the front-rear direction of the vehicle. In the drawings, the arrow marked Z indicates the third direction Z, which is perpendicular to the first direction Y and the second direction X, and is the arrangement direction of the beam body 110 and the third connecting piece 140. In the vehicle, the third direction Z corresponds to the up-down direction of the vehicle. Among them, taking the vehicle driver as a reference, the first direction Y corresponds to the left-right direction of the driver, the second direction X corresponds to the front-rear direction of the driver, and the third direction Z corresponds to the up-down direction of the driver.

[0056] As an introduction to the present application, the front lower cross beam is introduced. The front lower cross beam is located between the engine compartment (i.e. the front compartment) and the passenger compartment of the vehicle body, and is located below the front wall. For the conventional vehicle body, the front lower cross beam usually needs 15 to 30 stamping parts, which need to be designed systematically, connected by welding method to form a body structure to ensure the structural requirements of this area. This structure of multiple stamping parts causes complex structure and high cost, which is not conducive to the lightweight of the vehicle body and the logistics management. If the vehicle body is produced in the way of full-engine-compartment integrated die casting, although the crash performance can be guaranteed, the overall structure of the vehicle body is large, which needs to be produced on the corresponding production line, which is not easy to produce, resulting in a substantial increase in cost.

[0057] Therefore, the embodiment of the present application provides a front lower cross beam 100, which adopts an integrated structure, which on the one hand reduces the number of parts, reduces the cost and processing difficulty, and is conducive to promoting the lightweight of the vehicle body; on the other hand, the front lower cross beam 100 with integrated structure and other sheet metal parts can be connected to form the vehicle body structure, which can reduce the cost and guarantee the crash performance.

[0058] Please refer to Figure 1 and Figure 2The front lower cross beam 100 of the embodiment of the present application is arranged at the front part of the passenger compartment of the vehicle body and below the front apron 400. On the one hand, the front lower cross beam 100 can be used to separate the space of the passenger compartment and the front engine compartment, and on the other hand, the front lower cross beam 100 can be used to connect the A-pillar inner panel 200, the front longitudinal beam 300, the front apron 400, the front floor 600 and other structures of the vehicle, so as to guarantee the structural strength of the vehicle.

[0059] The A-pillar inner panel 200 refers to the panel or member inside the A-pillar of the vehicle, that is, the internal upright column on both sides of the front part of the vehicle, which connects the roof and the bottom of the vehicle body and plays a role in supporting and protecting the structure of the vehicle. The front longitudinal beam 300 refers to a longitudinal structural beam located in the front engine compartment of the vehicle, which is connected with the front lower cross beam 100 to form the framework structure of the front engine compartment, and is used to increase the stiffness and carrying capacity of the vehicle. At the same time, the front longitudinal beam 300 also bears part of the function of absorbing collision energy to protect the vehicle occupants and the engine. The front apron 400 is located at the front part of the passenger compartment and is used to separate the space of the passenger compartment and the front engine compartment and to reduce the risk of the front engine compartment components invading the passenger compartment. The front floor 600 is the lower floor of the passenger compartment and is used to bear the passengers, seats and the like.

[0060] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 9 and Figure 10 The front lower cross beam 100 of the embodiment of the present application comprises a beam body 110, a first connecting piece 120, a second connecting piece 130, a third connecting piece 140 and a fourth connecting piece 150. The beam body 110, the first connecting piece 120, the second connecting piece 130, the third connecting piece 140 and the fourth connecting piece 150 are an integral structure, that is, these structures are integrally formed. Specifically, the front lower cross beam 100 can be integrally formed by aluminum die casting process using materials such as C611-F.

[0061] By setting the beam body 110, the first connecting piece 120, the second connecting piece 130, the third connecting piece 140 and the fourth connecting piece 150 as an integral structure, the integration degree of the front lower cross beam 100 is improved, so that the number of parts is reduced, the cost of systematic design and assembly of each independent part is reduced, and the complexity of the vehicle structure is reduced. Moreover, it is also beneficial to reduce the weight of the vehicle, help to reduce energy consumption and harmful substance emission, improve the power performance of the whole vehicle and improve the cruising range. In addition, the reduction of parts helps to manage logistics and improve the efficiency of processing and manufacturing.

[0062] The beam body 110 is the main structure of the front lower cross beam 100, which extends along the first direction Y. The first connecting piece 120, the second connecting piece 130, the third connecting piece 140 and the fourth connecting piece 150 are connecting structures arranged on the beam body 110. Among them, the first connecting piece 120 is arranged on the beam body 110 in the first direction Y, used for connecting the A-pillar inner panel 200 of the vehicle; the second connecting piece 130 is arranged on the beam body 110 in the second direction X, used for connecting the front longitudinal beam 300 of the vehicle; the third connecting piece 140 is arranged on the beam body 110 in the third direction Z, used for connecting the front wall panel 400 of the vehicle; the fourth connecting piece 150 is arranged on the beam body 110 in the third direction Z, and is located on the side of the beam body 110 away from the second connecting piece 130, used for connecting the front floor 600 of the vehicle. Specifically, the first connecting piece 120 is arranged on both sides of the beam body 110 in the first direction Y, used for connecting the A-pillar inner panel 200 on both sides of the vehicle; the second connecting piece 130 is arranged on the front side of the beam body 110 in the second direction X, used for connecting the front longitudinal beam 300 of the vehicle; the third connecting piece 140 is arranged on the upper side of the beam body 110 in the third direction Z, used for connecting the front wall panel 400 of the vehicle; the fourth connecting piece 150 is arranged on the lower side of the beam body 110 in the third direction Z, and is located on the side of the beam body 110 away from the second connecting piece 130, used for connecting the front floor 600 of the vehicle.

[0063] By arranging the first connecting piece 120, the second connecting piece 130, the third connecting piece 140 and the fourth connecting piece 150 at different positions of the beam body 110, these connecting structures can be respectively connected with the corresponding sheet metal parts, improving the convenience of assembling the front lower cross beam 100 to the vehicle, reducing the cost and ensuring the crash performance.

[0064] Among them, the number of first connecting pieces 120 can be two, and the two first connecting pieces 120 are used to connect the A-pillar inner panel 200 on the left and right sides of the vehicle respectively. The number of second connecting pieces 130 can also be two, and the two second connecting pieces 130 are arranged on the front side of the beam body 110, spaced apart along the first direction Y, used for connecting the two front longitudinal beams 300 of the front engine compartment of the vehicle respectively.

[0065] Please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In some embodiments, the front lower cross beam 100 further comprises a reinforcing piece 160 for reinforcing the structural strength of the front lower cross beam 100. The reinforcing piece 160 comprises a first reinforcing structure 161 and a second reinforcing structure 162, wherein at least part of the first reinforcing structure 161 is arranged on the beam body 110 in the second direction X and connects the second connecting piece 130 and the beam body 110. As Figure 4As shown, the first reinforcing structure 161 is arranged on the front side of the beam body 110 and is located on the outer side of the beam body 110 away from the passenger compartment, which can be arranged on the front side of the beam body 110 and connected to the second connecting piece 130 and the beam body 110 to reinforce the structure of the two; it can also be partially arranged on the front side of the beam body 110 and partially arranged on the two sides of the beam body 110, thereby connecting the beam body 110 and the first connecting piece 120 and ensuring the overall structural strength. At least part of the second reinforcing structure 162 is arranged on the side of the beam body 110 opposite to the first reinforcing structure 161, that is, the second reinforcing structure 162 is arranged on the inner side of the beam body 110 close to the passenger compartment. As shown, Figure 3 As shown, the second reinforcing structure 162 can connect the beam body 110, the first connecting piece 120, the third connecting piece 140 and other structures to further ensure the overall structural strength. In this embodiment, as shown, Figure 6 As shown, at least part of the first reinforcing structure 161 and at least part of the second reinforcing structure 162 are positionally corresponding in the second direction X. That is, among the first reinforcing structure 161 and the second reinforcing structure 162 arranged on the two sides of the beam body 110, part of the reinforcing ribs are arranged in alignment in the second direction X and are positionally corresponding. Thus, good force transmission can be achieved, the force can be shared, the force transmission path of the vehicle body collision can be better met, and the structural strength and dynamic stiffness of the overall component can be further improved.

[0066] In some embodiments, the reinforcing piece 160 is an integral structure with the beam body 110, the first connecting piece 120, the second connecting piece 130, the third connecting piece 140 and the fourth connecting piece 150. That is, the reinforcing piece 160, the beam body 110, the first connecting piece 120, the second connecting piece 130, the third connecting piece 140 and the fourth connecting piece 150 are made by integral molding, so that the first reinforcing structure 161 and the second reinforcing structure 162 are connected as an integral whole, share the force and improve the overall structural strength.

[0067] Please refer to Figure 7 In some embodiments, the reinforcing piece 160 adopts a plurality of reinforcing ribs arranged in a "honeycomb" manner to balance the multidimensional energy transmission requirements in the collision.

[0068] Please refer to Figure 5 and Figure 8In some embodiments, the second connecting piece 130 is connected with the first connecting piece 120. Specifically, the second connecting piece 130 is located at the side of the first connecting piece 120 close to the beam body 110, that is, the second connecting piece 130 is located at the inner side of the first connecting piece 120 and is connected with the first connecting piece 120. Thus, the collision force received by the front longitudinal beam 300 is first transmitted to the second connecting piece 130 and then transmitted to the first connecting piece 120 and the beam body 110 via the second connecting piece 130, which is beneficial to force dispersion and improves the impact resistance of the front undercross beam 100.

[0069] Please refer to Figure 5 、 Figure 11 、 Figure 12 and Figure 13 In some embodiments, the second connecting piece 130 includes a first connecting structure 131 and a second connecting structure 132. The first connecting structure 131 extends from the beam body 110 along the second direction X and extends to the front side of the beam body 110, and the first connecting structure 131 is used to connect the longitudinal beam inner plate 310 of the front longitudinal beam 300. The second connecting structure 132 is arranged between the first connecting structure 131 and the first connecting piece 120 and is connected with the first connecting structure 131, the beam body 110 and the first connecting piece 120 respectively, and the second connecting structure 132 is used to connect the longitudinal beam outer plate 320 of the front longitudinal beam 300. By arranging the second connecting piece 130 to include the first connecting structure 131 and the second connecting structure 132, the connection with the longitudinal beam inner plate 310 and the longitudinal beam outer plate 320 can be realized respectively, and the force transmission and stress dispersion can be realized respectively. Moreover, the first connecting structure 131 extends along the second direction X, which can support and transmit force to the longitudinal beam inner plate 310 in the second direction X, and the second connecting structure 132 is arranged between the first connecting structure 131 and the first connecting piece 120, which can disperse and conduct the collision force of the longitudinal beam outer plate 320 to both sides, ensuring the connection and integration between the front longitudinal beam 300 and the front undercross beam 100, and being more beneficial to the collapse and energy absorption of the front longitudinal beam 300, which provides a good play space for the structural design of the front longitudinal beam 300.

[0070] Please refer to Figure 11 In some embodiments, the longitudinal beam inner plate 310 can be connected with the first connecting structure 131 by bolts, which reduces the assembly difficulty and cost and facilitates the adjustment of the body size tolerance.

[0071] Please refer to Figure 5In some embodiments, the first connecting structure 131 includes a first end 1311 away from the beam body 110 in the second direction X, and the second connecting structure 132 extends from the first end 1311 to the first connecting piece 120. That is, the first end 1311 is the frontmost end of the first connecting structure 131, and the second connecting structure 132 extends obliquely from the first end 1311 to the first connecting piece 120. This helps to further improve the conduction of force between the front longitudinal beam 300 and the second connecting piece 130, and to disperse the force of the front longitudinal beam 300 more to the sides of the vehicle, which is conducive to the energy absorption of the front longitudinal beam 300.

[0072] Please refer to Figure 12 , Figure 13 and Figure 14 Optionally, the longitudinal beam outer plate 320 can be connected to the second connecting structure 132 in a self-piercing riveting (SPR) manner. In some embodiments, the second connecting structure 132 includes a first joint surface 1321 and a second joint surface 1322. The first joint surface 1321 extends from the first end 1311 in a direction oblique to the second direction X. The second joint surface 1322 is arranged on the side of the first joint surface 1321 close to the first connecting piece 120, that is, the second joint surface 1322 is arranged between the first joint surface 1321 and the first connecting piece 120. The second joint surface 1322 extends in a direction oblique to the second direction X and forms an included angle with the first joint surface 1321. The first joint surface 1321 and the second joint surface 1322 are used to respectively attach to the longitudinal beam outer plate 320. That is, the first joint surface 1321 and the second joint surface 1322 are oblique to different degrees and form an included angle therebetween, so that when the longitudinal beam outer plate 320 is subjected to a collision impact force in the second direction X, the force can be changed twice at the first joint surface 1321 and the second joint surface 1322 during conduction, which not only helps to disperse and conduct the force, but also helps to deform the longitudinal beam outer plate 320, thereby improving the energy absorption effect of the front longitudinal beam 300.

[0073] Please refer to Figure 13The second connecting structure 132 further comprises a third bonding surface 1323, which is arranged between the first end 1311 and the first connecting piece 120, and is used to be attached to the longitudinal beam outer plate 320. The third bonding surface 1323 and the first bonding surface 1321 are arranged in the third direction Z, and / or the third bonding surface 1323 and the second bonding surface 1322 are arranged in the third direction Z. Optionally, the first bonding surface 1321 and the second bonding surface 1322 are located on the upper side of the first connecting structure 131 in the third direction Z. The third bonding surface 1323 is located on the lower side of the first connecting structure 131 in the third direction Z and is arranged between the first end 1311 and the first connecting piece 120, and is used to be attached to the longitudinal beam outer plate 320. By arranging the third bonding surface 1323, the connection and attachment of the longitudinal beam outer plate 320 and the second connecting structure 132 are further improved, the dispersion degree of force conduction between the longitudinal beam outer plate 320 and the second connecting structure 132 is promoted, and the force conduction performance is improved.

[0074] Please refer to Figure 14 In some embodiments, the longitudinal beam outer plate 320 and the first bonding surface 1321, the second bonding surface 1322, and the third bonding surface 1323 are connected in a substantially triangular structure (see Figure 14 the shape at the second connecting structure 132 in the top view structure), which can further improve the force conduction.

[0075] Optionally, the minimum size of the first bonding surface 1321, the second bonding surface 1322, and the third bonding surface 1323 in the third direction Z is greater than or equal to 23 mm, which reduces the connection difficulty and further improves the overall connection and attachment.

[0076] Please refer to Figure 15 In some embodiments, the third connecting piece 140 comprises a fourth bonding surface 141, which is arranged towards the side away from the second connecting piece 130 and is used to be attached to the front wall plate 400. The minimum size L1 of the fourth bonding surface 141 in the third direction Z is greater than or equal to 23 mm. That is, the third connecting piece 140 is provided with a flat fourth bonding surface 141. By arranging the size L1 of the fourth bonding surface 141 to be greater than or equal to 23 mm, the gluing is facilitated, the connection strength of the third connecting piece 140 and the front wall plate 400 is improved, and the assembly difficulty is reduced.

[0077] Please refer to Figure 16In some embodiments, the fourth connecting piece 150 comprises a fifth joint surface 151, the fifth joint surface 151 is used to be attached to the front floor, and the minimum size L2 of the fifth joint surface 151 in the second direction X is greater than or equal to 23 mm. That is, the fourth connecting piece 150 is provided with a flat fifth joint surface 151, and by setting the size L2 of the fifth joint surface 151 to be greater than or equal to 23 mm, the gluing is facilitated, the connection strength of the fourth connecting piece 150 and the front floor 600 is improved, and the assembly difficulty is reduced.

[0078] Please refer again to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the first connecting piece 120 is also used to connect the rocker beam 500. Optionally, the first connecting piece 120 is connected with the A-pillar inner panel 200 and connects the rocker beam 500 located on the outer side through the A-pillar inner panel 200.

[0079] Correspondingly, the application also provides a vehicle, which can be an oil vehicle or a new energy vehicle, and the vehicle comprises the front lower cross beam 100 according to any one of the above embodiments. Therefore, the vehicle can comprise all the technical features and technical effects of the above-mentioned front lower cross beam 100, which will not be described here.

[0080] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0081] The above describes the front lower cross beam 100 and the vehicle provided by the embodiments of the application in detail, and the principles and implementation manners of the application are described by using specific examples. The above embodiment descriptions are only used to help understand the technical solutions and core ideas of the application; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A front undercross beam, characterized in that, The front undercross beam comprises: a beam body extending along a first direction; a first connecting member arranged on the beam body along the first direction and used for connecting an A-pillar inner panel of a vehicle; a second connecting member arranged on the beam body along a second direction and used for connecting a front longitudinal beam of the vehicle; a third connecting member arranged on the beam body along a third direction and used for connecting a front apron of the vehicle; a fourth connecting member arranged on the beam body along the third direction and located on a side of the beam body opposite to the second connecting member, and used for connecting a front floor of the vehicle; the beam body, the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are an integral structure, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The front undercross beam according to claim 1, characterized in that The front undercross beam further comprises a reinforcing member, and the reinforcing member comprises: a first reinforcing structure arranged at least partially on the beam body along the second direction and connecting the second connecting member and the beam body; a second reinforcing structure arranged at least partially on a side of the beam body opposite to the first reinforcing structure; at least a part of the first reinforcing structure and at least a part of the second reinforcing structure are positionally corresponding in the second direction.

3. The front undercross beam according to claim 2, characterized in that The reinforcing member, the beam body, the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are an integral structure.

4. The lower dash cross-car beam of claim 1, wherein, The second connecting member is connected with the first connecting member.

5. The front undercross beam according to any one of claims 1 to 4, characterized in that The second connecting member comprises: a first connecting structure extending from the beam body along the second direction, and used for connecting a longitudinal beam inner panel of the front longitudinal beam; a second connecting structure arranged between the first connecting structure and the first connecting member and connected with the first connecting structure, the beam body and the first connecting member respectively, and used for connecting a longitudinal beam outer panel of the front longitudinal beam.

6. The front undercross beam according to claim 5, characterized in that The first connecting structure comprises a first end away from the beam body in the second direction, and the second connecting structure extends from the first end to the first connecting member.

7. The front lower cross beam according to claim 6, characterized in that The second connecting structure comprises: a first joint surface extending from the first end along a direction oblique to the second direction; a second joint surface arranged between the first joint surface and the first connecting member, and extending in a direction oblique to the second direction and having an included angle with the first joint surface; the first joint surface and the second joint surface are used for being attached to the longitudinal beam outer panel respectively.

8. The front lower cross beam according to claim 7, characterized in that The second connecting structure further comprises: a third joint surface arranged between the first end and the first connecting member, and used for being attached to the longitudinal beam outer panel; the third joint surface and the first joint surface are arranged in the third direction, and / or the third joint surface and the second joint surface are arranged in the third direction.

9. The crosstube of claim 1, wherein The third connecting member comprises a fourth joint surface arranged on a side away from the second connecting member and used for being attached to the front apron, and a minimum dimension L1 of the fourth joint surface in the third direction is greater than or equal to 23 mm.

10. The crosstube of claim 1, wherein The fourth connecting member includes a fifth joint surface for being attached to the front floor, the minimum dimension L2 of the fifth joint surface in the second direction being greater than or equal to 23 mm.

11. A vehicle characterized by comprising: The front lower cross beam includes the fourth connecting member as described in any one of claims 1 to 10.

Images