Force transmission structure and vehicle

Abstract

The invention provides a force transmission structure and a vehicle. The force transmission structure comprises a first force transmission piece and a second force transmission piece, a first cavity is formed in the second force transmission piece, and a first reinforcing piece is arranged in the first cavity; the first force transmission piece is connected with the second force transmission piece; and the projection of the first force transmission piece in the first direction is at least partially overlapped with the projection of the first reinforcing piece in the first direction. According to the force transmission structure, the force transmission effect can be improved.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and in particular relates to a force transmission structure and a vehicle. Background Art

[0002] In the prior art, multiple parts usually achieve force transmission through physical contact with each other, but multiple parts result in a large number of parts, low structural strength performance, and poor force transmission effect. For example, in the prior art, a vehicle includes multiple structures such as a longitudinal beam, a vehicle passenger compartment panel, a cross beam, and multiple parts for transmitting force. When the longitudinal beam is hit, the collision force transmission effect from the longitudinal beam to the panel is poor, the collision force transmission stability is poor, and the protection for the occupants in the vehicle is poor. Summary of the invention

[0003] The purpose of the present invention is to provide a new technical solution for a force transmission structure, which can at least solve the technical problem of poor collision force transmission effect in the prior art.

[0004] The present invention also provides a vehicle, which comprises the above-mentioned force transmission structure.

[0005] The present invention provides a force transmission structure, including: a first force transmission member; a second force transmission member, wherein a first cavity is arranged in the second force transmission member, and a first reinforcement member is arranged in the first cavity; the first force transmission member is connected to the second force transmission member; and a projection of the first force transmission member in the first direction at least partially overlaps with a projection of the first reinforcement member in the first direction.

[0006] Optionally, the first reinforcement occupies more than half of the volume of the first cavity.

[0007] Optionally, the first force transmission member is made of a first material, and the second force transmission member is made of a second material.

[0008] Optionally, the first reinforcement member is connected to a side wall of the first cavity close to the first force transmission member.

[0009] Optionally, the force transmission structure further includes: a cavity reinforcement member, wherein the cavity reinforcement member is disposed in the first cavity and connected to the first force transmission member.

[0010] Optionally, the cavity reinforcement member is connected to the first reinforcement member.

[0011] Optionally, the first reinforcement at least partially wraps the cavity reinforcement.

[0012] Optionally, the cavity reinforcement is connected to a side wall of the first cavity close to the first force transmission member.

[0013] Optionally, the force transmission structure further includes: a connecting member, and the first force transmission member is connected to the second force transmission member through the connecting member.

[0014] Optionally, the connecting member includes: a second force transmitting member connecting portion, the second force transmitting member connecting portion is suitable for connecting to the second force transmitting member; the first force transmitting member is provided with a connecting member connecting portion, the connecting member connecting portion is suitable for connecting to the connecting member; wherein the cross-sectional area of ​​the second force transmitting member connecting portion is larger than the cross-sectional area of ​​the connecting member connecting portion.

[0015] Optionally, the connecting member also includes: a first force transmitting member connecting portion, the first force transmitting member connecting portion is connected to the second force transmitting member connecting portion, the first force transmitting member connecting portion is suitable for connecting to the connecting member connecting portion, wherein the cross-sectional area of ​​at least part of the second force transmitting member connecting portion is larger than the cross-sectional area of ​​at least part of the first force transmitting member connecting portion.

[0016] Optionally, one end of the connecting member close to the first force transmitting member has an open groove, so that the connecting member and the first force transmitting member are nested and connected.

[0017] Optionally, the connecting piece is an integrally formed structure.

[0018] Optionally, the first material is a metal material, and the second material is a carbon fiber material.

[0019] Optionally, the first force transmission member and the connecting member are an integrally formed structure.

[0020] Optionally, the density of the second force transmission member is smaller than the density of the first force transmission member.

[0021] Optionally, the strength of the second force transmitting member is greater than the strength of the first force transmitting member.

[0022] Optionally, the strength of the first reinforcement member is smaller than the strength of the first force transmission member, and the strength of the first reinforcement member is smaller than the strength of the second force transmission member.

[0023] Optionally, the density of the first reinforcement member is smaller than the density of the first force transmission member, and the density of the first reinforcement member is smaller than the density of the second force transmission member.

[0024] Optionally, the first force transmission member is a longitudinal beam, and / or the second force transmission member is a passenger compartment enclosure.

[0025] Optionally, the force transmission structure further includes: a threshold beam, wherein the threshold beam is connected to the second force transmission member so as to transmit the force to the threshold beam through the first cavity.

[0026] Optionally, the force transmission structure further includes: an A-pillar, wherein the A-pillar is connected to the second force transmission member so as to transmit force to the A-pillar through the first cavity.

[0027] Optionally, the second force transmission member further has a second cavity therein, so as to transmit the force to the A-pillar through the second cavity, and in the second direction, at least a portion of the first cavity is spaced apart from at least a portion of the second cavity.

[0028] Optionally, in the second direction, at least a portion of the second cavity is disposed on an upper side of the first cavity.

[0029] Optionally, the force transmission structure further includes: a connecting member, through which the first force transmission member is connected to the second force transmission member; and a second reinforcement member, through which the second reinforcement member is connected to the connecting member, and the second reinforcement member and the second force transmission member cooperate to form a cavity.

[0030] Optionally, the second reinforcement member is connected to the connecting member through the first reinforcement member.

[0031] Optionally, a projection of the second reinforcement member in the first direction at least partially overlaps with a projection of the connecting member in the first direction.

[0032] Optionally, a projection of the second reinforcement member in the first direction at least partially overlaps with a projection of the first force transmitting member in the first direction.

[0033] Optionally, the force transmission structure further includes: an A-pillar, the A-pillar is connected to the second reinforcement, and the A-pillar is arranged on a side of the second reinforcement away from the passenger compartment space.

[0034] Optionally, the force transmission structure further includes: a cross beam extending along a third direction, and the cross beam is connected to the second reinforcement member.

[0035] Optionally, the force transmission structure further includes: an A-pillar, wherein the A-pillar is connected to the crossbeam.

[0036] Optionally, the force transmission structure further includes: a central channel, wherein the central channel is connected to the crossbeam.

[0037] Optionally, the second force transmission member further has a third cavity therein, and the third cavity extends along a third direction.

[0038] Optionally, the force transmission structure further includes: a third reinforcement member, and the third reinforcement member is arranged in the third cavity.

[0039] Optionally, the second force transmission member is a front panel, and the front panel includes: a front panel reinforcement plate and a front panel lower plate, and the front panel reinforcement plate and the front panel lower plate enclose the first cavity.

[0040] Optionally, the second force transmission member is a dash panel, and the dash panel includes: a dash reinforcement plate and a dash lower plate, and the dash reinforcement plate and the dash lower plate form the third cavity.

[0041] Optionally, the second force transmission member is a front panel, and the front panel includes: a front panel reinforcement plate, a front panel lower plate and a front panel upper plate, and the front panel reinforcement plate, the front panel lower plate and the front panel upper plate form the second cavity.

[0042] Optionally, at least one of the front dash upper plate, the front dash reinforcement plate and the front dash lower plate is an integrally formed structure.

[0043] Optionally, the second force transmission member is a front panel, and the front panel includes: a front panel reinforcement plate, and the front panel reinforcement plate is connected to the cross beam.

[0044] The present invention also provides a vehicle, comprising any of the above-mentioned force transmission structures.

[0045] The force transmission structure according to the present invention includes a first force transmission member and a second force transmission member. When the force is transmitted to the second force transmission member through the first force transmission member, since the first reinforcement member can support and strengthen the second force transmission member, the area and strength of the second force transmission member can be designed to be larger, so that the second force transmission member can not only integrate more structures and functions, but also facilitate the dispersion and transmission of the force from the first force transmission member to more positions and more directions. In addition, by arranging the first reinforcement member in the first cavity, the first reinforcement member and the first cavity can better transmit the force. It can be seen that the force transmission structure of the present invention can improve the force transmission effect.

[0046] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0048] Figure 1 is a schematic diagram of a partial structure of a vehicle at an angle according to an embodiment of the present invention;

[0049] Figure 2 is a partial structural schematic diagram of a vehicle at one angle according to another embodiment provided by the present invention;

[0050] Figure 3 is a schematic diagram of a partial structure of a vehicle according to an embodiment of the present invention from another angle;

[0051] Figure 4 is a schematic structural diagram of a connecting member of a vehicle according to an embodiment of the present invention;

[0052] Figure 5 is a schematic diagram of a partial structure of a vehicle according to an embodiment of the present invention from another angle;

[0053] Figure 6 is a partial cross-sectional schematic diagram of a connecting piece according to an embodiment of the present invention;

[0054] Figure 7 is a partial cross-sectional view at one angle of a vehicle according to an embodiment of the present invention;

[0055] Figure 8 is a schematic diagram of a partial structure of a vehicle according to an embodiment of the present invention from another angle;

[0056] Fig. 9 is a partial cross-sectional view from another angle of a vehicle according to an embodiment of the present invention;

[0057] Fig.10 is a schematic diagram of installing a reinforcement member of a vehicle according to an embodiment of the present invention;

[0058] Fig.11 is a partial cross-sectional view of a vehicle according to an embodiment of the present invention;

[0059] Fig.12 is a partial cross-sectional view from another angle of a vehicle according to an embodiment of the present invention;

[0060] Fig.13 is a schematic diagram of a floor and a central channel of a vehicle according to an embodiment of the present invention;

[0061] Fig.14 is a schematic diagram of a partial structure of a vehicle according to an embodiment provided by the present invention;

[0062] Fig.15 is a partial schematic diagram of a vehicle according to an embodiment of the present invention;

[0063] Fig.16 is a schematic diagram of a first cavity, a second cavity and a third cavity of a vehicle according to an embodiment of the present invention;

[0064] Fig.17 is a schematic diagram of a second cavity and a third cavity of a vehicle according to an embodiment of the present invention;

[0065] Fig.18is a partial cross-sectional view of a vehicle according to an embodiment of the present invention.

[0066] Reference numerals:

[0067] Vehicle 1;

[0068] Sill beam 13;

[0069] A first force transmission member 141; a connecting member connecting portion 141a;

[0070] The second force transmission member 202; the first profile surface 202a of the front wall plate; the second profile surface 202b of the front wall plate;

[0071] First cavity 202L3; second cavity 202L2; third cavity 202L1;

[0072] Connecting member 203; second force transmission member connecting portion 203a; first force transmission member connecting portion 203b;

[0073] A second reinforcement member 204;

[0074] The front longitudinal beam rear support plate overlaps the third direction 204a; the front longitudinal beam rear support plate first overlaps the first direction 204b; the front longitudinal beam rear support plate second overlaps the first direction 204c; the front longitudinal beam rear support plate first overlaps the second direction 204d; the battery pack front mounting beam first overlap 204e; the battery pack front mounting beam second overlap 204f; the front longitudinal beam rear support plate second overlap 204g; the longitudinal beam rear support plate side surface 204h; the longitudinal beam rear support plate top surface 204i;

[0075] Beam 205;

[0076] Cavity reinforcement 206;

[0077] A third reinforcement member 207;

[0078] A first reinforcement member 208;

[0079] A pillar 209;

[0080] A front wall reinforcement plate 210;

[0081] A front lower panel 211;

[0082] The first floor profile 211a; the second floor profile 211b;

[0083] Front wall upper panel 212;

[0084] Central channel 213. DETAILED DESCRIPTION

[0085] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0086] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0087] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0088] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0089] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0090] The force transmission structure according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0091] like Figures 1 to 18 As shown, the force transmission structure according to the embodiment of the present invention includes a first force transmission member 141 and a second force transmission member 202 .

[0092] Specifically, a first cavity 202L3 is provided in the second force transmission member 202, a first reinforcement member 208 is provided in the first cavity 202L3, the first force transmission member 141 is connected to the second force transmission member 202; and the projection of the first force transmission member 141 in the first direction at least partially overlaps with the projection of the first reinforcement member 208 in the first direction.

[0093] In other words, the force transmission structure of the embodiment of the present invention is mainly composed of a first force transmission member 141 and a second force transmission member 202. The force transmission structure of the embodiment of the present invention can be used for but not limited to vehicles. Among them, the first force transmission member 141 is directly or indirectly connected to the second force transmission member 202. The second force transmission member 202 can have a first cavity 202L3. For example, the second force transmission member 202 can define the first cavity 202L3 by forming a thin plate structure. The provision of the first cavity 202L3 is conducive to better force transmission. A first reinforcement member 208 can be installed in the first cavity 202L3, and at least a part of the first cavity 202L3 can be filled by the first reinforcement member 208. The first reinforcement member 208 can be an expansion material, and the first reinforcement member 208 can have a reinforcement effect. For example, the first reinforcement member 208 can be a foaming material with a certain hardness, that is, the first reinforcement member 208 is a hard foaming material, such as PMI (polymethacrylimide foam) material. It should be noted that filling the first reinforcement 208 in the first cavity 202L3 is conducive to treating the first cavity 202L3 as an integral beam and increasing the overall stiffness of the beam. For example, when the force transmission structure of this embodiment is used in the automotive field, by filling the first reinforcement 208 in the first cavity 202L3, the two sides of the formed beam are not easy to collapse inward due to the force, but are conducive to transmitting to the C-pillars on the left and right sides.

[0094] Among them, the projection of the first force transmission member 141 in the first direction at least overlaps with the projection of the first reinforcement member 208 in the first direction. It should be noted that, in the embodiment of the present invention, the projection of a certain structural member in the first direction refers to the projection formed on the plane perpendicular to the light extending along the first direction through the structural member. For example, the first direction is the horizontal direction, the projection of the first force transmission member 141 in the horizontal direction is the first projection area located on the vertical plane, the projection of the second force transmission member 202 in the horizontal direction is the second projection area located on the vertical plane, and the first projection area and the second projection area at least partially overlap.

[0095] It can be seen that when the force is transmitted to the second force transmission member 202 through the first force transmission member 141, since the first reinforcement member 208 can support and strengthen the second force transmission member 202, the area of ​​the second force transmission member 202 can be designed to be larger, so that the second force transmission member 202 can not only integrate more structures and functions, but also facilitate the dispersion and transmission of the force from the first force transmission member 141 to more positions and more directions. In addition, by arranging the first reinforcement member 208 in the first cavity 202L3, the first reinforcement member 208 and the first cavity 202L3 can better transmit the force. It can be seen that the force transmission structure according to the embodiment of the present invention can improve the force transmission effect.

[0096] Optionally, the first reinforcement member 208 fills at least one-half of the area in the first cavity 202L3, for example, fills two-thirds of the first cavity 202L3, which can effectively ensure the first reinforcement member 208 to strengthen the second force transmission member 202. When the first reinforcement member 208 fills the first cavity 202L3, the second force transmission member 202 and the first reinforcement member 208 are tightly combined and can be used as a force-bearing whole.

[0097] According to one embodiment of the present invention, the first force transmission member 141 is a first material, and the second force transmission member 202 is a second material. It can be seen that the first material and the second material are different, and for force transmission between different materials, the first cavity 202L3 can better transmit force. In addition, different materials make the first force transmission member 141 and the second force transmission member 202 have different advantages. For example, by using a first material with greater strength to prepare the first force transmission member 14, it is beneficial to improve the impact resistance effect; by using a second material with other functions to prepare the second force transmission member 202, such as using carbon fiber to prepare the second force transmission member 202, the second force transmission member 202 can have advantages such as lightweight.

[0098] In some specific embodiments of the present invention, the first reinforcement member 208 is connected to the side wall of the first cavity 202L3 close to the first force transmission member 141. In other words, the portion of the inner wall of the first cavity 202L3 that is closer to the first force transmission member 141 can be directly connected to the first reinforcement member 208, which, on the one hand, increases the overlapping area of ​​the projections of the first reinforcement member 208 and the first force transmission member 141 in the first direction, and on the other hand, shortens the force transmission path between the first force transmission member 141 and the first reinforcement member 208. In this embodiment, the first reinforcement member 208 is connected to the side wall of the first cavity 202L3 close to the first force transmission member 141, which can better transmit force to the first reinforcement member 208.

[0099] According to one embodiment of the present invention, Figure 2 As shown, the force transmission structure further includes a cavity reinforcement member 206, which is disposed in the first cavity 202L3 and connected to the first force transmission member 141. The cavity reinforcement member 206 cooperates with the first reinforcement member 208 to better disperse the force to the first cavity 202L3. For example, the cavity reinforcement member 206 has a greater structural strength and a harder hardness. In this embodiment, by using the cavity reinforcement member 206, better force transmission can be achieved.

[0100] In some specific embodiments of the present invention, the cavity reinforcement member 206 is connected to the first reinforcement member 208 , that is, the cavity reinforcement member 206 and the first reinforcement member 208 can interact with each other and transmit force to each other.

[0101] According to one embodiment of the present invention, the first reinforcement member 208 at least partially wraps the cavity reinforcement member 206. For example, the first reinforcement member 208 covers a portion of the outer surface of the cavity reinforcement member 206, or covers the entire outer surface of the cavity reinforcement member 206. In this embodiment, by using the first reinforcement member 208 to at least partially wrap the cavity reinforcement member 206, the force transmission efficiency and the overall stability of the force transmission structure can be improved.

[0102] In some specific embodiments of the present invention, the cavity reinforcement 206 is connected to the side wall of the first cavity 202L3 close to the first force transmission member 141, that is, the portion of the inner wall of the first cavity 202L3 closer to the first force transmission member 141 can be directly connected to the cavity reinforcement 206 to facilitate better force transmission.

[0103] According to an embodiment of the present invention, the force transmission structure further includes a connecting member 203, and the first force transmission member 141 is connected to the second force transmission member 202 through the connecting member 203, that is, the first force transmission member 141 can be indirectly connected to the second force transmission member 202 through the connecting member 203. For example, the first force transmission member 141 extends roughly along the first direction, the connecting member 203 is installed at the end of the first force transmission member 141 in the first direction, and the second force transmission member 202 is connected to the connecting member 203, which not only allows the root structure of the first force transmission member 141 to be taken over by the second force transmission member 202; and the use of the connecting member 203 reduces the difficulty of installing the first force transmission member 141 and the second force transmission member 202.

[0104] Optionally, the connecting member 203 is a casting, such as an aluminum casting, which has high strength.

[0105] In some specific embodiments of the present invention, the connector 203 includes a second force transmission member connecting portion 203a, which is suitable for connecting to the second force transmission member 202; the first force transmission member 141 is provided with a connector connecting portion 141a, which is suitable for connecting to the connector 203. The cross-sectional area of ​​the second force transmission member connecting portion 203a is larger than the cross-sectional area of ​​the connector connecting portion 141a, which is convenient for installing the connector 203 at the end of the second force transmission member 202 and for better force transmission. The cross-sectional area of ​​the second force transmission member connecting portion 203a here refers to the plane obtained by cutting the second force transmission member connecting portion 203a along a plane perpendicular to the extension direction. For example, the second force transmission member connecting portion 203a extends in the horizontal direction, and the cross-sectional area of ​​the second force transmission member connecting portion 203a is the plane obtained by cutting the second force transmission member connecting portion 203a through a vertical plane. The cross-sectional area of ​​the connector connecting portion 141a is also obtained in the above manner, which will not be repeated here.

[0106] According to an embodiment of the present invention, the connecting member 203 further includes a first force - transmitting member connecting portion 203b connected to the second force - transmitting member connecting portion 203a. The first force - transmitting member connecting portion 203b is adapted to be connected to the connecting member connecting portion 141a. Wherein, the cross - sectional area of at least part of the second force - transmitting member connecting portion 203a is larger than the cross - section of at least part of the first force - transmitting member connecting portion 203b, which not only facilitates the assembly of the first force - transmitting member 141 and the connecting member 203, but also facilitates the transmission of the collision force from the first direction. In addition, by making the cross - sectional area of at least part of the second force - transmitting member connecting portion 203a larger than the cross - section of at least part of the first force - transmitting member connecting portion 203b, it is beneficial to disperse and transmit the collision force received by the first force - transmitting member 141 to the root region of the first force - transmitting member 141 and the second force - transmitting member 202.

[0107] Optionally, the cross - section of the connecting member 203 has a plurality of chambers. For example, the cross - section of the connecting member 203 is in the shape of a Chinese character 'Ri' (日), which is convenient for energy absorption through collapse.

[0108] Optionally, one end of the connecting member 203 close to the first force - transmitting member 141 has an open groove body, so that the connecting member 203 and the first force - transmitting member 141 are nested and connected, improving the assembly efficiency and being able to limit the degrees of freedom of the connecting member 203 and the first force - transmitting member 141, for example, limiting the degrees of freedom other than the first direction.

[0109] Optionally, the first force - transmitting member 141 is nested outside one end of the connecting member 203, which is convenient for the stable, firm and rapid assembly of the first force - transmitting member 141 and the connecting member 203. In addition, one end of the connecting member 203 can also be nested outside the first force - transmitting member 141, which can be designed according to the structural requirements and has strong flexibility.

[0110] According to an embodiment of the present invention, the connecting member 203 is an integrally formed structure, which is convenient for processing and manufacturing, and improves the stability of the force - transmitting process, avoiding the decomposition of the structure during the force - transmitting process.

[0111] In some specific embodiments of the present invention, the first material is a metal material, and the second material is a carbon fiber material. In this embodiment, on the one hand, since the first material is a metal material and has a large strength, even if the first force transmission member 141 prepared by the first material is subjected to a collision force, the first force transmission member 141 is not easy to deform. On the other hand, by using carbon fiber material to prepare the second force transmission member 202, it is convenient to design a larger area of ​​the second force transmission member 202 and integrate more structures and functions. For example, the front panel and the crossbeam in the prior art are independent structures, and the two are connected by a separate force transmission structure. However, the front panel prepared by the carbon fiber material can integrate the crossbeam and the force transmission structure, that is, the front panel, the crossbeam and the force transmission structure between the two in the prior art are integrated into one structure, that is, integrated into the second force transmission member 202. Combined with the structural strength and stiffness of the carbon fiber material, it can be seen that in this embodiment, the second force transmission member 202 is prepared by the carbon fiber material, so that the second force transmission member 202 is not only highly integrated, but also has higher structural strength and stiffness. It should be noted that when using carbon fiber materials as parts covering the entire outer side of the carbon cabin, the carbon fiber materials need to have sufficient strength and hardness, and be scratch-resistant, etc. Therefore, in the embodiment of the present invention, at least the first reinforcement 208 can effectively support the second force transmission member 202 made of carbon fiber, which is not only conducive to using a large-area second force transmission member 202, reducing the wall thickness and density of the second force transmission member 202, and achieving lightweight; but also conducive to the carbon fiber covering the outer side of the entire carbon cabin, and having sufficient strength and hardness and scratch resistance.

[0112] In addition, the second force transmission member 202 made of carbon fiber material is conducive to its high integration, and high integration is conducive to solving the problems of reduced strength at the overlap of parts and excessive uneven strength of the assembly structure caused by the splicing of different parts. At the same time, high integration can also greatly reduce the development of parts, molds, and fixture data and the splicing and welding production operation time.

[0113] According to one embodiment of the present invention, the first force transmission member 141 and the connecting member 203 are an integrally formed structure, that is, the first force transmission member 141 and the connecting member 203 can be integrated into one, which not only improves the integration but also is beneficial to the force transmission stability and efficiency.

[0114] In some specific embodiments of the present invention, the density of the second force transmission member 202 is less than the density of the first force transmission member 141, which is conducive to designing the second force transmission member 202 to have a larger area and thinner wall thickness, thereby improving the degree of integration and lightweight effect. For example, the second force transmission member 202 is prepared using carbon fiber, which has the advantages of large area, thin wall thickness, low density, and lightweight.

[0115] According to an embodiment of the present invention, the strength of the second force transmission member 202 is greater than the strength of the first force transmission member 141, which is conducive to balancing the performance of the second force transmission member 202, such as area, weight and strength. The strength here refers to tensile strength. For example, the tensile strength of the second force transmission member 202 made of carbon fiber is greater than that of the first force transmission member 141 made of metal material.

[0116] In some specific embodiments of the present invention, the strength of the first reinforcement 208 is less than the strength of the first force transmission member 141, and the strength of the first reinforcement 208 is less than the strength of the second force transmission member 202. In other words, the strength of the first reinforcement 208 is less than the strength of the first force transmission member 141 and the strength of the second force transmission member 202, which facilitates the first reinforcement 208 to fill more areas of the first cavity 202L3 and is beneficial to force transmission.

[0117] According to one embodiment of the present invention, the density of the first reinforcement member 208 is less than the density of the first force transmission member 141, and the density of the first reinforcement member 208 is less than the density of the second force transmission member 202. In other words, the density of the first reinforcement member 208 is less than the density of the first force transmission member 141 and the density of the second force transmission member 202, which is conducive to the first reinforcement member 208 covering a larger area and achieving lightweight.

[0118] Optionally, the projection of the connecting member 203 in the first direction at least partially overlaps with the projection of the first cavity 202L3 in the first direction, and the projection of the first force transmission member 141 in the first direction at least partially overlaps with the projection of the first cavity 202L3 in the first direction, so that the first force transmission member 141 can transmit the force to the first cavity 202L3 through the connecting member 203, and then transmit it to other positions through the first cavity 202L3. For example, when the force transmission structure is applied to the vehicle 1, the first direction can be the front-to-back direction of the vehicle 1. At this time, the projection of the connecting member 203 in the front-to-back direction of the vehicle 1 at least partially overlaps with the projection of the first cavity 202L3 in the front-to-back direction of the vehicle 1, and the projection of the first force transmission member 141 in the front-to-back direction of the vehicle 1 at least partially overlaps with the projection of the first cavity 202L3 in the front-to-back direction of the vehicle 1, which can effectively transmit the collision force from the front of the vehicle 1 to the connecting member 203 through the first force transmission member 141.

[0119] Optionally, the projection of the first reinforcement 208 in the first direction at least partially overlaps with the projection of the connecting member 203 in the first direction, and the projection of the first reinforcement 208 in the first direction at least partially overlaps with the projection of the connecting member 203 in the first direction, so as to facilitate the connecting member 203 to transmit the force to the first reinforcement 208 and to the first cavity 202L3.

[0120] The present invention further provides a vehicle 1, which includes the force transmission structure of any of the above embodiments. Since the above force transmission structure has the function of facilitating the transmission of force, the vehicle 1 of the embodiment of the present invention also has the same function, which will not be elaborated here.

[0121] The vehicle 1 may have a front-to-back direction, a left-to-right direction, and a height direction. The front-to-back direction refers to the direction from the front to the rear of the vehicle, i.e., the length direction of the vehicle 1; the left-to-right direction refers to the width direction of the vehicle. Optionally, in the embodiment of the present invention, the first direction is the front-to-back direction, the second direction is the height direction, and the third direction is the left-to-right direction.

[0122] Optionally, the first force transmission member 141 is a longitudinal beam, and / or the second force transmission member 202 is a passenger compartment panel, such as a front panel or a rear panel. For example, when the first force transmission member 141 is a longitudinal beam, it is beneficial to transmit the collision force received by the longitudinal beam to other positions, and when the second force transmission member 202 is a front panel, it is beneficial to improve the integration of the front panel. Similarly, the integration of the rear panel can also be improved, which will not be described in detail here.

[0123] Optionally, the second force transmission member 202 is made of carbon fiber material, so that the second force transmission member 202 can be designed to have a larger area, so that the second force transmission member 202 can be combined with multiple structures. For example, the second force transmission member 202 can be combined with the first component in the prior art, so that a certain area on the second force transmission member 202 can have the function of the first component, and another part on the second force transmission member 202 can play the role of a force transmission structure. For the sake of convenience, the part corresponding to the first area on the second force transmission member 202 can be used as the first component, and the part corresponding to the second area on the second force transmission member 202 can be used as a force transmission structure. When transmitting the force, the force can be transmitted to the area on the second force transmission member 202 that has the function of the first component. For example, when the longitudinal beam is hit, the longitudinal beam can pass the collision force through the part corresponding to the second area on the front panel, and then transmit it to the part corresponding to the first area on the front panel, so as to realize the transmission of the collision force received by the longitudinal beam to the first component.

[0124] It should be noted that, in the conventional technology, the force transmission structure and the first component are independent structures, and the two are connected by a separate force transmission structure. In the embodiment of the present invention, the first component and the force transmission structure are integrated into one structure, such as a front panel, which integrates the first component and the force transmission structure. The front panel is not only highly integrated, but also has higher structural strength and rigidity. In addition, the front panel can also serve as a component structure of the vehicle 1.

[0125] That is to say, by using the second force transmission member 202 made of carbon fiber material, the first component and the force transmission structure can be integrated on the second force transmission member 202 at the same time, for example, the first component and the force transmission structure can be integrated on a front panel at the same time. Thus, by adopting a highly integrated structure, the number of parts can be reduced while the structural strength performance can be improved.

[0126] It can be seen that the second force transmission member 202 of the embodiment of the present invention is highly integrated, and high integration is conducive to solving the problems of reduced strength at the overlap of parts and excessive uneven strength of the assembly structure caused by the splicing of different parts. At the same time, high integration can also greatly reduce the development of parts, molds, and fixture data and the splicing and welding production operation time.

[0127] Optionally, the first force transmission member 141 is a longitudinal beam, and is a front longitudinal beam, the first component is a cross beam of the vehicle 1, the front longitudinal beam extends substantially along the first direction, and the first area can extend along the third direction. In other words, the longitudinal beam is the front longitudinal beam, and the portion of the front panel corresponding to the first area can serve as a cross beam. The front longitudinal beam can extend substantially along the first direction, and the cross beam can extend substantially along the third direction.

[0128] In this embodiment, by limiting the portion of the front panel corresponding to the first area as the cross beam, not only can the cross beam be integrated into the front panel, but it is also beneficial to realize the transmission of the collision force from the first direction to the third direction.

[0129] Optionally, the number of the first regions is two, the two first regions are spaced apart and distributed along the second direction, the first component corresponding to one first region is the first crossbeam, and the first component corresponding to the other first region is the second crossbeam. That is to say, the number of the crossbeams corresponding to the first region is two, the two crossbeams are divided into the first crossbeam and the second crossbeam, and the first crossbeam and the second crossbeam are spaced apart and distributed along the second direction. Optionally, the two first regions, the front longitudinal beam and the front panel cooperate to form a Y-shaped structure, which is convenient for dispersing and transmitting the collision force from the front. Among them, the first force transmission member 141 and the Y-shaped structure can play the role of bearing the rear load and crushing energy absorption. For example, the first force transmission member 141 adopts a metal longitudinal beam, and the metal longitudinal beam and the Y-shaped structure can play the role of bearing the rear load, etc. In addition, the first reinforcement member 208 can be filled behind the part corresponding to the first region on the front panel, which is conducive to making the first region as a beam, enhancing the overall stiffness of the beam, so that the two sides of the beam are not easy to collapse inward due to the force, but are transmitted to the C-pillars on the left and right sides. In addition, a second reinforcement 204 may be provided behind the portion of the front panel corresponding to the first area, and the second reinforcement 204 may play a supporting role, thereby expanding the contact surface between the rear metal structure and the second reinforcement 204. It can be seen that the first reinforcement 208 and the second reinforcement 204 may play a role in dispersing stress, and the Y-shaped structure evenly distributes the force transmitted by the second force transmission member 202 on the second reinforcement 204, which can effectively prevent cracks near the second reinforcement 204.

[0130] In this embodiment, the dash panel integrates the first cross beam, the second cross beam, the force transmission structure between the longitudinal beam and the first cross beam, and the force transmission structure between the longitudinal beam and the second cross beam in the traditional structure.

[0131] Optionally, any two of the first direction, the third direction and the second direction are perpendicular to each other, for example, the first direction is the X direction, the second direction is the Z direction, and the third direction is the Y direction.

[0132] Optionally, the vehicle further includes an A-pillar 209 or a central channel 213, wherein the portion of the front panel serving as the first cross beam is connected to the A-pillar 209 or the central channel 213. In other words, the collision force can be transmitted to the A-pillar 209 or the central channel 213 through the portion of the front panel serving as the first cross beam.

[0133] Optionally, the dash panel also has a third area, and the portion of the dash panel corresponding to the third area serves as a longitudinal beam connecting plate, and nearby components can be connected through the longitudinal beam connecting plate to transfer the collision force of the longitudinal beam to more structures.

[0134] Optionally, the dash panel also has a fourth area, and the portion of the dash panel corresponding to the fourth area serves as a dust cover, so that the dash panel also has a dustproof function.

[0135] Optionally, when the front panel has the first area, the second area and the third area, etc. at the same time, the No. 1 crossbeam, the No. 2 crossbeam, the inner and outer rear connecting plates of the longitudinal beam, the dust cover and other parts that were originally conventionally designed at the root of the longitudinal beam in the prior art can be integrated into one part, that is, integrated into the second force transmission member 202, to achieve high integration.

[0136] Alternatively, if Figure 1 As shown, the front longitudinal beam extends along the first direction, and the front panel is installed at the end of the front longitudinal beam in the first direction. In other words, a front panel can be designed at the end of the front longitudinal beam in the first direction as a connecting structure between the longitudinal beam and the first component, etc., and at the same time as the first component, etc. Optionally, the front panels are installed at both ends of the longitudinal beam. In this embodiment, when the longitudinal beam is the front longitudinal beam, the structure at the root of the front longitudinal beam can be undertaken by a highly integrated second force transmission member 202.

[0137] Optionally, the vehicle 1 further comprises a sill beam 13, which is connected to the second force transmission member 202 to transmit the force to the sill beam 13 through the second cavity 202L2; wherein the second force transmission member is a front panel. That is, the second cavity 202L2 is connected to the sill beam 13 of the vehicle 1.

[0138] Optionally, the vehicle 1 includes an A-pillar 209 , and the A-pillar 209 is connected to the second force transmission member 202 to transmit the force to the A-pillar 209 through the first cavity 202L3 , that is, the first cavity 202L3 is connected to the A-pillar 209 .

[0139] It should be noted that the second cavity 202L2 extends to the sill beam 13 or the A-pillar 209 , which is conducive to force transmission. It can also be defined as the second cavity 202L2 is connected to the A-pillar 209 or the sill beam 13 .

[0140] Optionally, the second force transmission member 202 further has a second cavity 202L2 therein, so as to transmit the force to the A-pillar 209 through the second cavity 202L2, that is, the second cavity 202L2 is connected to the A-pillar 209. In the height direction of the vehicle 1, at least part of the first cavity 202L3 and at least part of the second cavity 202L2 are spaced apart, so as to facilitate the transmission of the force to more directions and positions in the space.

[0141] Optionally, when the force transmission structure is applied to the vehicle 1 and the force transmission structure includes a connecting member 203, the first force transmission member 141 may be a longitudinal beam, and the second force transmission member 202 may be a front panel. The connecting member 203 is respectively connected to the end of the longitudinal beam in the first direction and the front panel, so that the longitudinal beam is connected to the front panel. In other words, the longitudinal beam can be connected to the front panel through the connecting member 203. For example, the connecting member 203 is installed at the end of the longitudinal beam in the first direction, that is, the front panel is integrated at the root of the longitudinal beam, and the root of the longitudinal beam can be connected to the front panel through the connecting member 203.

[0142] Alternatively, if Figure 4 As shown, the first force transmission member connecting portion 203b or the second force transmission member connecting portion 203a is provided with a groove, for example, the side of the connecting member 203 close to the longitudinal beam or the front panel has an open groove, so that the connecting member 203 is nested and connected with the longitudinal beam or the front panel.

[0143] Optionally, the first force transmission member connection part 203b and the second force transmission member connection part 203a are respectively provided with a groove body, for example, the end of the connection member 203 close to the longitudinal beam and the end close to the front panel are respectively provided with a groove body. For example, the front and rear of the connection member 203 are provided with a bowl-shaped groove body, which is convenient for the connection between the connection member 203 and the longitudinal beam, or the connection between the connection member 203 and the front panel. Specifically, when the nested connection is performed, the connection member 203 can be inserted into the longitudinal beam, or the longitudinal beam can be inserted into the connection member 203, or the connection member 203 can be inserted into the front panel, or the front panel can be inserted into the connection member 203 according to the needs.

[0144] Optionally, the connector 203 includes a body and a fastening structure, and the body has an open groove on one side close to the longitudinal beam or the front panel. When a part of the longitudinal beam or the front panel is plugged into the receiving space, the receiving space can not only play a role of receiving, but also play a role of accommodating the fastening structure. When a part of the connector 203 is plugged into the longitudinal beam or the front panel, the receiving space can play a role of accommodating the fastening structure. The fastening structure can connect and fix the connector 203 and the longitudinal beam, or connect and fix the connector 203 and the front panel. Optionally, the fastening structure includes bolts and nuts for easy installation.

[0145] Optionally, the groove of the connecting member 203 close to the longitudinal beam has a first radial dimension, and the groove of the connecting member 203 close to the front panel has a second radial dimension, and the first radial dimension is smaller than the second radial dimension. For example, the front and rear of the connecting member 203 both have bowl-shaped structures, and the size of the bowl-shaped structure at the rear can be larger than the size of the bowl-shaped structure at the front, so that the collision force of the longitudinal beam can be dispersed and transmitted to the root area of ​​the longitudinal beam and the front panel.

[0146] Optionally, the longitudinal beam is nested outside a portion of the connecting member 203, that is, nested outside the first force transmission member connecting portion 203b. In other words, the longitudinal beam has a cavity inside, a portion of the connecting member 203 extends into the cavity and can be connected to the longitudinal beam through a fastening structure.

[0147] Optionally, the connecting member 203 is nested on the outside of a part of the front panel, that is, the second force transmission member connecting portion 203a is sleeved on the outside of a part of the front panel. In other words, the connecting member 203 has a receiving space on one side close to the front panel, and a part of the front panel extends into the receiving space and can be connected to the connecting member 203 through a fastening structure. For example, the connecting member 203 is provided with a bowl-shaped structure on the front and rear sides.

[0148] Optionally, the dash panel also has a fifth area, and the portion of the dash panel corresponding to the fifth area serves as a dash lower plate 211, which is beneficial for transmitting the collision force of the longitudinal beam to the structure near the dash panel.

[0149] Optionally, in the third direction, at least a portion of the second cavity 202L2 is disposed on the upper side of the first cavity 202L3 to facilitate transmission of force in multiple directions.

[0150] Optionally, the force transmission structure further includes: a connecting member 203, through which the first force transmission member 141 is connected to the second force transmission member 202. The vehicle 1 further includes a second reinforcing member 204, which is connected to the connecting member 203, and the second reinforcing member 204 cooperates with the second force transmission member 202 to form a cavity, which can not only further improve the strength, but also facilitate the transmission of the force.

[0151] Alternatively, if Figure 8 As shown, the vehicle 1 also includes an A-pillar 209 or a door sill, and the vehicle 1 also includes a second reinforcement member 204. For example, the second reinforcement member 204 can be used as a reinforcement support plate. Among them, the A-pillar 209 or the door sill is located on one side of the front panel in the third direction, and the reinforcement support plate can cooperate with the front panel to form a cavity, and the cavity extends along the third direction. For example, a reinforcement support plate is designed along the profile of avoiding the tire envelope at the root of the longitudinal beam and the inner side of the front panel and behind the connecting member 203, and forms a cavity structure with the front panel along the cross section of the third direction, which is conducive to guiding the collision of the root of the longitudinal beam to the A-pillar 209 or the door sill, and preventing the root of the longitudinal beam from failing. In addition, when the second reinforcement 204 is made of metal material, it is helpful to ensure the supporting effect, and can also expand the contact area between the metal structure behind the second reinforcement 204 and the second reinforcement 204, which has the effect of dispersing stress. The force transmitted by the first force transmission member 141 directly or indirectly to the second force transmission member 204 at the rear is evenly distributed on the second reinforcement 204, which can effectively prevent the second reinforcement 204 from cracking.

[0152] Optionally, the second reinforcement member 204 is connected to the connecting member 203 through the first reinforcement member 208 to facilitate force transmission, for example, along Fig.18 The force is transmitted in the direction indicated by the arrow.

[0153] Optionally, the projection of the second reinforcement member 204 in the first direction at least partially overlaps with the projection of the connecting member 203 in the first direction, which can improve the force transmission efficiency.

[0154] Optionally, the projection of the second reinforcement member 204 in the first direction at least partially overlaps with the projection of the first force transmission member 141 in the first direction, which can improve the force transmission efficiency.

[0155] Optionally, the force transmission structure further includes an A-pillar 209, which is connected to the second reinforcement 204. The A-pillar 209 is disposed on a side of the second reinforcement 204 away from the passenger compartment space to facilitate force transmission and reduce the amount of front collision intrusion into the passenger compartment.

[0156] Optionally, the vehicle 1 further includes a cross beam 205, which extends in the left-right direction of the vehicle 1 and is connected to the second reinforcement 204. The cross beam 205 can be used as a front mounting beam for the battery pack.

[0157] Optionally, the vehicle 1 further includes an A-pillar 209 , which is connected to the cross beam 205 to facilitate the transmission of force.

[0158] Optionally, the vehicle 1 further includes a central channel 213, which is connected to the cross beam 205. The force of a front collision can be transmitted to the A-pillars 209 on both sides and the central channel 213 through the second reinforcement 204 and the cross beam 205 respectively.

[0159] Optionally, the second force transmission member 202 further has a third cavity 202L1 therein, and the third cavity 202L1 extends substantially along the left-right direction of the vehicle 1 to facilitate transmission of force in the left-right direction.

[0160] Optionally, the vehicle 1 further includes a third reinforcement 207, which is disposed in the third cavity 202L1 to increase the strength while transmitting the force.

[0161] Optionally, the second force transmission member 202 includes a front enclosure reinforcement plate 210 and a front enclosure lower plate 211 , and the front enclosure reinforcement plate 210 and the front enclosure lower plate enclose a first cavity 202L3 .

[0162] Optionally, the second force transmission member 202 includes a dash reinforcing plate 210 and a dash lower plate 211 , and the dash reinforcing plate 210 and the dash lower plate 211 form a third cavity 202L1 .

[0163] Optionally, the second force transmission member 202 includes a dash reinforcing plate 210 , a dash lower plate 211 and a dash upper plate 212 , and the dash reinforcing plate 210 , the dash lower plate 211 and the dash upper plate 212 form a second cavity 202L2 .

[0164] Optionally, at least one of the front enclosure upper plate 212, the front enclosure reinforcement plate 210 and the front enclosure lower plate 211 is an integrally formed structure, which is not only convenient for processing and production but also convenient for force transmission.

[0165] Optionally, the second force transmission member 202 includes a front wall reinforcement plate 210 , and the front wall reinforcement plate 210 is connected to the cross beam 205 .

[0166] Alternatively, if Figure 8 As shown, the vehicle 1 further includes an A-pillar 209 or a door sill, and the dash panel further includes a dash lower panel 211, at least a portion of which can be used as a floor. Optionally, the floor is a carbon fiber floor. Optionally, the front portion of the dash panel that serves as the floor can cooperate with other portions of the dash panel to form a closed cavity structure. Wherein, the A-pillar 209 or the door sill can be located on one side of the dash panel in the third direction, and the portion of the dash panel that serves as the floor can cooperate with other portions of the dash panel to form at least one of the second cavity 202L2, the first cavity 202L3, and the third cavity 202L1. Wherein, the second cavity 202L2 can extend toward the end of the longitudinal beam in the first direction and the position of the A-pillar 209, respectively, the first cavity 202L3 can extend toward the position of the longitudinal beam and the door sill, respectively, and the third cavity 202L1 can correspond to the first crossbeam.

[0167] When the dash panel may include a dash lower panel 211, the second cavity 202L2 may be used as a dash upper cavity, and a dash upper cavity connecting the root of the dash and the upper end of the A-pillar 209 may be designed at the root of the front longitudinal beam. The first cavity 202L3 may be used as a longitudinal beam threshold connection cavity, and the third cavity 202L1 may be used as a first cross beam cavity.

[0168] Optionally, the cavity on the front wall, the cavity connecting the longitudinal beam threshold and the cavity of the first cross beam together form a trident-like cavity structure, that is, the second cavity 202L2, the first cavity 202L3 and the third cavity 202L1 cooperate to form a trident-shaped cavity to form a trident-like cavity structure, and the force can be along the Fig.16 This structure can improve the structural rigidity of the front part, disperse the impact force from the front collision of the longitudinal beam, and effectively prevent the longitudinal beam from tipping over when a collision occurs.

[0169] Optionally, the third cavity 202L1 is filled with a third reinforcement member 207, and the third reinforcement member 207 may be a hard foam material member. Figure 8 and Fig.11As shown, a first crossbeam cavity is formed after the front bulkhead and the floor are buckled. The first crossbeam cavity is filled with PMI reinforced plastic foam, and this reinforced foam can disperse and transfer the force to prefabricate the deformation of the cavity. When the first crossbeam is connected to the central tunnel 213, the PMI reinforced plastic foam can transfer part of the collision force from the longitudinal beam to the central tunnel 213 and prefabricate the bending deformation of the first crossbeam cavity, reducing the collision intrusion amount of the occupant. That is to say, by adopting the scheme of the cavity reinforced filling foam structure, part of the longitudinal beam collision force can be transferred to the central tunnel 213.

[0170] Optionally, the cross-section of the longitudinal beam has a plurality of cavities. For example, the cross-section of the longitudinal beam is a "day"-shaped cross-section. It should be noted that the structure of the front longitudinal beam is not limited to the "day"-shaped profile cross-section, and other forms of cross-sections are also applicable. At the same time, the closed roll-formed front longitudinal beam is also applicable to the present invention. Optionally, a rigid foaming material part is also filled at the root of the longitudinal beam, that is, a first reinforcing member 208 is filled.

[0171] The following will specifically describe the cooperation of the longitudinal beam with a "day"-shaped cross-section, the front bulkhead, the connecting member 203, etc.

[0172] As Figure 4 and Figure 6 shown, the connecting member 203 is arranged in a bidirectional bowl-shaped structure, and the bowl-shaped structure faces the front and rear directions. The front bowl-shaped structure is also designed in a "day"-shaped structure, and a threaded structure fastening structure is designed on each outer side wall of the "day"-shaped structure. The front bowl-shaped structure of the connecting member 203 is in the form of being embedded in the inner side of the front longitudinal beam to承接 the front longitudinal beam, and is fastened by bolts on the outer side wall to ensure the smooth and effective structure.

[0173] In addition, the bowl-shaped structure at the rear of the connecting member 203承接 the front bulkhead and is fastened to the front bulkhead by bolts. The rear bowl-shaped structure presents a flared outward shape. In addition, reinforcing ribs can be arranged in the left, right, and lower bowl-shaped opening areas. The upper rear part of the connecting member 203 can be directly connected to the cavity structure of the front bulkhead, so that the collision force transmitted from the longitudinal beam is dispersed in multiple directions of up, down, left, and right through the connecting member 203. Through the design of the bowl-shaped structure, the transmission of the longitudinal beam collision force is effectively dispersed.

[0174] Optionally, as Figure 8 、 Fig. 9 and Fig.10 shown, a second reinforcing member 204 is arranged on the inner side of the front bulkhead and at the lower rear part of the connecting member 203. When designing the second reinforcing member 204, the profile of the tire envelope is avoided, and the cavity cross-section shape is designed.

[0175] Optionally, as Fig.10As shown, the second reinforcement member 204 serves as the rear support plate of the front longitudinal beam. The rear support plate of the front longitudinal beam has at least one of a third-direction lap joint surface 204a of the rear support plate of the front longitudinal beam, a first-direction first lap joint surface 204b of the rear support plate of the front longitudinal beam, a first-direction second lap joint surface 204c of the rear support plate of the front longitudinal beam, a second-direction first lap joint surface 204d of the rear support plate of the front longitudinal beam, a first lap joint surface 204e of the front mounting beam of the battery pack, a second lap joint surface 204f of the front mounting beam of the battery pack, a second-direction second lap joint surface 204g of the rear support plate of the front longitudinal beam, a side surface 204h of the rear support plate of the longitudinal beam, and a top surface 204i of the rear support plate of the longitudinal beam.

[0176] Optionally, the third-direction lap joint surface 204a of the rear support plate of the front longitudinal beam is located in the region directly behind the middle rib of the "day" - shaped cavity of the connecting member 203, and it forms a cavity structure with the front panel in the front - rear direction.

[0177] Optionally, the first-direction first lap joint surface 204b of the rear support plate of the front longitudinal beam is designed to avoid the tire envelope surface, and this flange is connected to the front panel surface in the first direction.

[0178] Optionally, the first-direction second lap joint surface 204c of the rear support plate of the front longitudinal beam is connected to the front panel surface in the first direction, and is simultaneously connected to the A - pillar 209 and the sill area.

[0179] Optionally, the second-direction first lap joint surface 204d of the rear support plate of the front longitudinal beam is connected to the bottom surface of the front panel up and down. Meanwhile, a front mounting beam of the battery pack is arranged inside the left - right first - direction cavity formed after the connection of the second-direction first lap joint surface 204d. The first lap joint surface 204e of the front mounting beam of the battery pack is connected to the rear side surface of the front mounting beam of the battery pack, and the second lap joint surface 204f of the front mounting beam of the battery pack is connected to the top surface of the front mounting beam of the battery pack.

[0180] Optionally, the second-direction second lap joint surface 204g of the rear support plate of the front longitudinal beam and the front panel jointly form a sealing plane for the opening of the steering dust cover.

[0181] Optionally, the side surface 204h of the rear support plate of the longitudinal beam is respectively connected to the top surface 204i of the rear support plate of the longitudinal beam and the second-direction second lap joint surface 204g of the rear support plate of the front longitudinal beam. The first-direction first lap joint surface 204b of the rear support plate of the front longitudinal beam, the top surface 204i of the rear support plate of the longitudinal beam, and the side surface 204h of the rear support plate of the longitudinal beam jointly form a third - direction cavity cross - section with the front panel.

[0182] By adopting the above - mentioned second reinforcement member 204 and its structural design with the front panel, it is beneficial to effectively guide the force at the root of the longitudinal beam in the backward and downward directions to the A - pillar 209 and the sill cavity structure. In addition, part of the collision force can be transmitted to the battery pack through the front mounting beam of the battery pack, achieving the purpose of dispersing the collision force.

[0183] The connection relationship between the front panel and the floor of the present invention will be described in detail below in conjunction with specific embodiments.

[0184] like Fig.11 As shown, the dash panel and the front area of ​​the floor are interlocked to form a cavity structure extending upward from the root of the longitudinal beam and bending to the A-pillar 209, and the cavity structure is filled with PMI reinforced plastic foam, that is, the first reinforcement 208 is arranged on the inner side of the dash panel, in front of the rear support plate of the front longitudinal beam, and is also arranged directly behind the connecting member 203, echoing the bowl-shaped structure at the rear of the connecting member 203, and extending upward to the height of the shock absorber bracket.

[0185] like Figure 6 , Figure 7 As shown, the connecting piece 203 and the above-mentioned cavity are designed with a third-directional overlap surface and a screw connection structure. The force transmitted from the front longitudinal beam is transmitted to the hard foam material piece through the bowl-shaped connecting piece 203, and is transmitted backward and downward to the rear support plate 204 of the front longitudinal beam through the hard foam material piece, and then transmitted to the lower part of the A-pillar 209 and the door sill, and upward to the above-mentioned cavity structure, and then transmitted to the upper and middle part of the A-pillar 209. The hard foam material piece can enhance the strength and rigidity of the cavity, disperse the transmitted force, and suppress the deformation of the upper and lower annular cavities near the root of the longitudinal beam, effectively disperse the collision force value, and suppress the front longitudinal beam from rolling over.

[0186] like Fig.15 As shown, the floor has a first floor profile 211a and a second floor profile 211b, and the dash panel has a first dash panel profile 202a and a second dash panel profile 202b. The dash panel and the front area of ​​the floor are buckled to form a plurality of cavity structures, wherein the first floor profile 211a, the second floor profile 211b, the first dash panel profile 202a and the second dash panel profile 202b are enclosed, and the cavity is filled with PMI reinforced plastic foam, i.e., a hard foam material, which can be connected to the central channel 213 through the first floor profile 211a and the second floor profile 211b. During a frontal collision, in addition to the force transmission path described above, the collision force is transmitted to the No. 1 cross beam cavity structure in the first direction through the front longitudinal beam and the connecting piece 203. The hard foam material can enhance the structural strength and rigidity of the cavity, thereby dispersing the force transmission and inhibiting the deformation of the No. 1 cross beam cavity. At the same time, the collision force can be transmitted to the central channel 213, thereby reducing the front collision intrusion of the passenger compartment.

[0187] like Fig.15 As shown, the lower part of the central channel 213 is also connected to the front mounting beam of the battery pack, and the front mounting beam of the battery pack is connected to the battery pack. The battery pack is a high-rigidity component, and the central channel 213 is tightly connected to the front of the battery pack, which greatly suppresses the rollover instability of the central channel 213 when it bears the collision force, and reduces the front collision intrusion of the passenger compartment.

[0188] In some specific embodiments of the present invention, the front panel is a carbon fiber structural member, which has advantages such as light weight and is conducive to integrating multiple structures in the prior art, such as an integrated crossbeam, a dust hood, etc.

[0189] In summary, the vehicle 1 according to the embodiment of the present invention includes a force transmission structure, the first force transmission member 141 may include a longitudinal beam, and the second force transmission member 202 may include a front panel or a rear panel. By adopting a highly integrated front panel or rear panel structure, the number of parts can be reduced while improving the structural strength performance. In other words, the present invention also provides a vehicle 1, which includes the force transmission structure of any of the above embodiments. Since the force transmission structure has the above advantages, the vehicle 1 of the present invention also has the above advantages, which will not be elaborated here. The vehicle 1 may be a new energy sports car, etc.

[0190] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A force transmission structure, characterized in that: include: The first force transmission member; a second force transmission member, wherein a first cavity is disposed in the second force transmission member, and a first reinforcement member is disposed in the first cavity; The first force transmission member is connected to the second force transmission member; and a projection of the first force transmission member in the first direction at least partially overlaps with a projection of the first reinforcement member in the first direction.

2. The force transmission structure according to claim 1, characterized in that: The first reinforcement member occupies more than half of the volume of the first cavity.

3. The force transmission structure according to claim 1, characterized in that: The first force transmission member is made of a first material, and the second force transmission member is made of a second material.

4. The force transmission structure according to claim 1, characterized in that: The first reinforcement member is connected to a side wall of the first cavity close to the first force transmission member.

5. The force transmission structure according to claim 1, characterized in that: Also includes: A cavity reinforcement member, wherein the cavity reinforcement member is disposed in the first cavity and connected to the first force transmission member.

6. The force transmission structure according to claim 5, characterized in that: The cavity reinforcement member is connected to the first reinforcement member.

7. The force transmission structure according to claim 6, characterized in that: The first reinforcement member at least partially wraps the cavity reinforcement member.

8. The force transmission structure according to claim 5, characterized in that: The cavity reinforcement member is connected to a side wall of the first cavity on a side close to the first force transmission member.

9. The force transmission structure according to claim 1, characterized in that: Also includes: A connecting member, wherein the first force transmission member is connected to the second force transmission member through the connecting member.

10. The force transmission structure according to claim 9, characterized in that: The connecting piece comprises: A second force transmission member connecting portion, wherein the second force transmission member connecting portion (203a) is suitable for connecting to the second force transmission member; The first force transmission member is provided with a connecting member connecting portion, and the connecting member connecting portion is suitable for connecting with the connecting member; Wherein, the cross-sectional area of ​​the connecting portion of the second force transmission member is larger than the cross-sectional area of ​​the connecting portion of the connecting member.

11. The force transmission structure according to claim 10, characterized in that: The connecting piece also includes: A first force transmission member connecting portion, wherein the first force transmission member connecting portion is connected to the second force transmission member connecting portion, and the first force transmission member connecting portion is suitable for connecting to the connecting member connecting portion, wherein the cross-sectional area of ​​at least part of the second force transmission member connecting portion is larger than the cross-sectional area of ​​at least part of the first force transmission member connecting portion.

12. The force transmission structure according to claim 9, characterized in that: One end of the connecting member close to the first force transmission member has an open groove body so that the connecting member and the first force transmission member are nested and connected.

13. The force transmission structure according to claim 9, characterized in that: The connecting piece is an integrally formed structure.

14. The force transmission structure according to claim 3, characterized in that: The first material is a metal material, and the second material is a carbon fiber material.

15. The force transmission structure according to claim 9, characterized in that: The first force transmission member and the connecting member are an integrally formed structure.

16. The force transmission structure according to claim 1, characterized in that: The density of the second force transmission member is smaller than the density of the first force transmission member.

17. The force transmission structure according to claim 1, characterized in that: The strength of the second force transmission member is greater than the strength of the first force transmission member.

18. The force transmission structure according to claim 1, characterized in that: The strength of the first reinforcement member is smaller than the strength of the first force transmission member, and the strength of the first reinforcement member is smaller than the strength of the second force transmission member.

19. The force transmission structure according to claim 1, characterized in that: The density of the first reinforcement member is smaller than the density of the first force transmission member, and the density of the first reinforcement member is smaller than the density of the second force transmission member.

20. The force transmission structure according to any one of claims 1 to 19, characterized in that: The first force transmission member is a longitudinal beam; And / or the second force transmission member is a passenger compartment enclosure.

21. The force transmission structure according to claim 20, characterized in that: Also includes: A threshold beam is connected to the second force transmission member to transmit a force to the threshold beam through the first cavity.

22. The force transmission structure according to claim 20, characterized in that: Also includes: An A-pillar is connected to the second force transmission member so as to transmit a force to the A-pillar through the first cavity.

23. The force transmission structure according to claim 22, characterized in that: The second force transmission member further has a second cavity therein, so as to transmit the force to the A-pillar through the second cavity. In the second direction, at least a portion of the first cavity is spaced apart from at least a portion of the second cavity.

24. The force transmission structure according to claim 23, characterized in that: In the second direction, at least a portion of the second cavity is disposed on an upper side of the first cavity.

25. The force transmission structure according to claim 20, characterized in that: The force transmission structure also includes: A connecting member, through which the first force transmission member is connected to the second force transmission member; A second reinforcement member is connected to the connecting member, and the second reinforcement member cooperates with the second force transmission member to form a cavity.

26. The force transmission structure according to claim 25, characterized in that: The second reinforcement member is connected to the connecting member through the first reinforcement member.

27. The force transmission structure according to claim 25, characterized in that: A projection of the second reinforcing member in the first direction at least partially overlaps with a projection of the connecting member in the first direction.

28. The force transmission structure according to claim 25, characterized in that: The projection of the second reinforcement member in the first direction at least partially overlaps with the projection of the first force transmission member in the first direction.

29. The force transmission structure according to claim 25, characterized in that: Also includes: An A-pillar is connected to the second reinforcement, and the A-pillar is arranged on a side of the second reinforcement away from the passenger compartment.

30. The force transmission structure according to claim 25, characterized in that: Also includes: A cross beam extends along a third direction and is connected to the second reinforcement member.

31. The force transmission structure according to claim 30, characterized in that: Also includes: An A-pillar is connected to the cross beam.

32. The force transmission structure according to claim 30, characterized in that: Also includes: A central channel is connected to the cross beam.

33. The force transmission structure according to claim 20, characterized in that: The second force transmission member further has a third cavity therein, and the third cavity extends along a third direction.

34. The force transmission structure according to claim 33, characterized in that: Also includes: A third reinforcement member is disposed in the third cavity.

35. The force transmission structure according to claim 20, characterized in that: The second force transmission member is a front panel, and the front panel includes: A front wall reinforcement plate and a front wall lower plate, wherein the front wall reinforcement plate and the front wall lower plate enclose the first cavity.

36. The force transmission structure according to claim 33, characterized in that: The second force transmission member is a front panel, and the front panel includes: A dash reinforcing plate and a dash lower plate, wherein the dash reinforcing plate and the dash lower plate form the third cavity.

37. The force transmission structure according to claim 23, characterized in that: The second force transmission member is a front panel, and the front panel includes: A cowl reinforcement plate, a cowl lower plate and a cowl upper plate, wherein the cowl reinforcement plate, the cowl lower plate and the cowl upper plate form the second cavity.

38. The force transmission structure according to claim 37, characterized in that: At least one of the dash upper plate, the dash reinforcement plate and the dash lower plate is an integrally formed structure.

39. The force transmission structure according to claim 30, characterized in that: The second force transmission member is a front panel, and the front panel includes: A front wall reinforcement plate is connected to the cross beam.

40. A vehicle, characterized in that: Comprising the force transmission structure described in any one of claims 1-39.

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