Vehicle body force transmission structure and vehicle

Abstract

The utility model provides a vehicle body force transmission structure and a vehicle. The vehicle body force transmission structure comprises first force transmission beams arranged on the inner side of a doorsill beam side by side and second force transmission beams with the rear ends connected with the front ends of the first force transmission beams. The rear end of the first force transmission beam extends towards the rear floor front cross beam, the second force transmission beam is gradually bent towards one side of the doorsill beam from back to front in the front-back direction of the whole vehicle, and the front end of the second force transmission beam is connected with the doorsill beam. According to the vehicle body force transmission structure, the first force transmission beam and the second force transmission beam are arranged on the inner side of the doorsill beam, the second force transmission beam is gradually bent towards one side of the doorsill beam from back to front and is connected with the doorsill beam, the supporting force of the doorsill beam in the X direction (the front-back direction of the whole vehicle) can be improved, and the structural stability of the doorsill beam can be improved; therefore, the situation that the doorsill beam is prone to deviating backwards under the small overlapping collision working condition is avoided, and the collision safety of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle parts technical field, especially a vehicle body force transmission structure, and the utility model relates to a vehicle with the vehicle body force transmission structure. BACKGROUND

[0002] When the vehicle collides, the force transmission structure of the vehicle body can disperse and transmit the collision force generated by the collision along the force transmission path from the collision point. The traditional vehicle body force transmission structure is mainly composed of a cross beam and a longitudinal beam. When the vehicle collides, especially in the small overlap collision condition, the rocker beam is easy to deviate backward, thereby affecting the collision safety of the vehicle. SUMMARY

[0003] Therefore, the utility model aims at providing a vehicle body force transmission structure to improve the force transmission performance and solve the problem that the rocker beam is easy to deviate backward in the small overlap collision.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A vehicle body force transmission structure comprises a first force transmission beam arranged side by side on the inner side of a rocker beam and a second force transmission beam connected to the front end of the first force transmission beam at the rear end.

[0006] The rear end of the first force transmission beam extends to the front rocker beam, the second force transmission beam gradually bends to one side of the rocker beam from the rear to the front along the front-rear direction of the vehicle, and the front end of the second force transmission beam is connected to the rocker beam.

[0007] Further, the first force transmission beam and the second force transmission beam are located above the front floor panel, and the vehicle body force transmission structure further comprises a third force transmission beam arranged side by side on the inner side of the rocker beam; the rear end of the third force transmission beam is connected to the front end of the first force transmission beam, and the front end of the third force transmission beam extends to the lower panel of the front wall panel.

[0008] Further, a front floor lower longitudinal beam is arranged below the front floor panel, and the first force transmission beam and the front floor lower longitudinal beam are arranged in correspondence with each other.

[0009] Further, a rear end of a front engine compartment longitudinal beam rear section is connected to the front end of the front floor lower longitudinal beam below the front wall panel lower panel, and the third force transmission beam and the front engine compartment longitudinal beam rear section are arranged in correspondence with each other.

[0010] Further, a seat cross beam is connected to the rocker beam at the end, the seat cross beam intersects with the first force transmission beam and is connected together.

[0011] Further, the seat cross beam comprises front seat cross beams and rear seat cross beams arranged at intervals front and back; the front seat cross beam is arranged close to the front end of the first force transmission beam.

[0012] Further, the first force transmission beam and the rocker beam are provided with a diagonal support beam, the diagonal support beam is arranged on the front side of the rear seat cross beam and close to the rear seat cross beam.

[0013] Further, the rear end of the first force transmission beam is connected with the rocker beam and the front cross beam of the rear floor through the front part of the rear floor longitudinal beam; the first force transmission beam, the second force transmission beam, the rocker beam and the front part of the rear floor longitudinal beam are connected to form a ring structure.

[0014] Further, the first force transmission beam and the second force transmission beam are integrally formed.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The vehicle body force transmission structure sets the first force transmission beam and the second force transmission beam on the inner side of the rocker beam, the second force transmission beam is gradually bent to one side of the rocker beam from back to front and connected with the rocker beam, which is beneficial to improve the support force of the rocker beam in the X direction (the front and back direction of the vehicle) and the structural stability of the rocker beam, thereby avoiding the rocker beam from being easily deviated backward in the small overlap collision condition and improving the collision safety of the vehicle.

[0017] Secondly, the third force transmission beam is arranged, which further enriches the transmission path of the collision force, so that the collision force can be dispersed and transmitted through the first force transmission beam, the second force transmission beam and the third force transmission beam, which is beneficial to improve the uniformity of the collision force dispersion. The first force transmission beam is arranged in correspondence with the front floor lower longitudinal beam, which can improve the structural strength of the two and the dispersion and transmission effect of the collision force. The third force transmission beam is arranged in correspondence with the front engine compartment rear longitudinal beam, which is beneficial to improve the strength and rigidity of the force transmission structure and the transmission effect of the collision force from front to back.

[0018] Furthermore, the seat cross beam intersects with the first force transmission beam, so that the collision force can be transmitted between the first force transmission beam and the seat cross beam, which is beneficial to increase the force transmission path, and the seat cross beam, the first force transmission beam and the rocker beam resist the influence of the collision force on the rocker beam in cooperation. The front seat cross beam is arranged close to the front end of the first force transmission beam, so that the front seat cross beam can be used as a cutoff beam for the collision force transmission of the second force transmission beam and the third force transmission beam, which is beneficial to improve the collision safety. The diagonal support beam is arranged close to the rear seat cross beam, which is also beneficial to improve the safety of side collision.

[0019] Further, the ring-like structure formed by the first transmission beam, the second transmission beam, the rocker beam and the front part of the rear floor longitudinal beam can evenly disperse the impact force to the peripheral components and has a good energy absorption effect, and can effectively improve the torsional stiffness of the vehicle body, thereby preventing the impact force from being concentrated on the rocker beam and preventing the rocker beam from being deviated due to excessive force.

[0020] In addition, another object of the present application is to provide a vehicle, wherein the vehicle is provided with the vehicle body force transmission structure as described above.

[0021] The vehicle body force transmission structure as described above can improve the collision safety of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the application, and are incorporated herein for explanation. The present application will also be described and explained with additional specificity and detail by the accompanying drawings:

[0023] Figure 1 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0024] Figure 2 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0025] Figure 3 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0026] Figure 4 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0027] Figure 5 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0028] Figure 6 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0029] Figure 7 Structure schematic diagram of the vehicle body force transmission structure in another view angle according to the first embodiment of the present application;

[0030] Figure 8The structure schematic view of the third transmission force beam in another view of the first transmission force beam, the second transmission force beam and the third transmission force beam in the first embodiment of the utility model;

[0031] Figure 9 The structure schematic view of the first transmission force beam and the second transmission force beam in the first embodiment of the utility model;

[0032] Figure 10 The structure schematic view of the third transmission force beam in the first embodiment of the utility model;

[0033] Figure 11 The structure schematic view of the inclined support beam in the first embodiment of the utility model;

[0034] Figure 12 The partial structure schematic view of the bottom of the vehicle body transmission force structure in the first embodiment of the utility model.

[0035] Mark explanation:

[0036] 1, the threshold beam; 2, the first transmission force beam; 3, the second transmission force beam; 4, rear floor front cross beam; 5, front floor panel; 6, the third transmission force beam; 7, front wall lower plate; 8, front floor lower longitudinal beam; 9, front seat cross beam; 10, rear seat cross beam; 11, inclined support beam; 12, rear floor longitudinal beam; 13, middle channel;

[0037] 100, annular structure;

[0038] 301, connecting portion; 302, first inclined surface;

[0039] 401, cross beam reinforcing plate;

[0040] 601, second inclined surface;

[0041] 701, front engine compartment longitudinal beam rear section; 702, extension channel. DETAILED DESCRIPTION

[0042] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0043] In the description of the utility model, it should be noted that the orientation words such as 'up, down, left, right, front, back' used in the embodiment are defined with the up-down direction, left-right direction and front-back direction of the automobile as the reference. Among them, the up-down direction of the automobile is also the height direction (Z direction) of the automobile, the front-back direction of the automobile is also the length direction (X direction) of the automobile, and the left-right direction of the automobile is also the width direction (Y direction) of the automobile. In addition, the terms 'first' and'second' are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] Moreover, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connector" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be internal communication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0045] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0046] Embodiment one

[0047] The embodiment relates to a vehicle body force transmission structure, which can improve force transmission performance by optimizing the structure and solve the problem that the rocker beam 1 is prone to shift backward in small overlap collision.

[0048] In terms of overall structure, the vehicle body force transmission structure comprises a first force transmission beam 2 arranged side by side on the inner side of the rocker beam 1 and a second force transmission beam 3 connected to the front end of the first force transmission beam 2. The rear end of the first force transmission beam 2 extends to the front floor cross beam 4, the second force transmission beam 3 gradually bends to one side of the rocker beam 1 from back to front along the front-rear direction of the vehicle, and the front end of the second force transmission beam 3 is connected to the rocker beam 1.

[0049] The vehicle body force transmission structure comprises a first force transmission beam 2 arranged side by side on the inner side of the rocker beam 1 and a second force transmission beam 3 connected to the front end of the first force transmission beam 2. The rear end of the first force transmission beam 2 extends to the front floor cross beam 4, the second force transmission beam 3 gradually bends to one side of the rocker beam 1 from back to front along the front-rear direction of the vehicle, and the front end of the second force transmission beam 3 is connected to the rocker beam 1.

[0050] Based on the overall introduction above, an exemplary structure of the vehicle body force transmission structure according to the embodiment is shown in Figures 1 to 4 The rocker beam 1 is arranged on the left and right sides of the front floor panel 5, the front side of the front floor panel 5 is connected to the rear side of the front wall lower panel 7, the middle part of the front floor panel 5 has a middle channel 13 extending along the front-rear direction of the vehicle, and the extension channel 702 extending from back to front along the front-rear direction of the vehicle is arranged on the front wall lower panel 7 corresponding to the middle channel 13. The extension channel 702 and the middle channel 13 are in communication along the front-rear direction of the vehicle, can cooperate with the rocker beam 1, and improve the effect of dispersing and transmitting the collision force from front to back.

[0051] In this embodiment, the first force transmission beam 2 and the second force transmission beam 3 are located between the sill beam 1 and the central channel 13 in the middle of the front floor panel 5, with the first force transmission beam 2 positioned close to the sill beam 1. This enhances the support effect on the sill beam 1, thereby helping to avoid problems such as displacement and tearing failure of the sill beam 1 during a collision. Considering that the vehicle body force transmission structure is symmetrically arranged on the left and right sides of the front floor panel 5, the following description focuses on one side of the vehicle body force transmission structure.

[0052] The threshold beam 1 is specifically located on the upper side of the front floor panel 5. To improve the performance of the first force transmission beam 2 and the second force transmission beam 3, in this embodiment, the first force transmission beam 2 and the second force transmission beam 3 are preferably located above the front floor panel 5. Figure 3 As shown, to reduce the amount of space occupied in the vehicle interior, the heights of the first force transmission beam 2 and the second force transmission beam 3 are both lower than that of the sill beam 1. Here, the cross-sections of the first force transmission beam 2 and the second force transmission beam 3 are both U-shaped, and a first cavity is formed between the two and the front floor panel 5. The first cavity helps to further improve the dispersion and transmission of collision forces.

[0053] In this embodiment, the front end of the second force transmission beam 3 is specifically connected to the sill beam 1 at the rear of the A-pillar, so as to promptly participate in the transmission of collision force when a small overlap collision occurs. Because the second force transmission beam 3 is curved, the distance between the second force transmission beam 3 and the sill beam 1 gradually decreases from back to front. To facilitate the connection between the second force transmission beam 3 and the sill beam 1, as follows... Figure 7 As shown, the height of the front end of the second force transmission beam 3 gradually increases along the direction close to the threshold beam 1, and the two sides of the front end of the second force transmission beam 3 are connected to the inner sidewall of the threshold beam 1.

[0054] To improve connection strength, such as Figure 9 As shown, the top surface of the front end of the second force transmission beam 3 is provided with a connecting portion 301 that overlaps the top wall of the sill beam 1, and the connecting portion 301 is connected to the top wall of the sill beam 1. In this way, the end face of the front end of the second force transmission beam 3 is connected to the sill beam 1 in the left-right direction of the vehicle, and the connecting portion 301 is connected to the sill beam 1 in the up-down direction of the vehicle, thereby improving the connection strength and reliability between the second force transmission beam 3 and the sill beam 1.

[0055] In practice, the first force transmission beam 2 and the second force transmission beam 3 are preferably integrally formed. This improves the connection strength between them, provides better resistance to deformation and force transmission, and also improves installation efficiency. Furthermore, the curved second force transmission beam 3 is connected to the sill beam 1, which increases the connection strength at the front of the vehicle body and prevents structural tearing failure after a collision.

[0056] like Figure 4As shown in FIG. 1, the vehicle body force transmission structure in the embodiment further comprises a front floor under longitudinal beam 8 arranged below the front floor panel 5, and the first force transmission beam 2 is arranged in correspondence with the front floor under longitudinal beam 8. In this way, the strength and rigidity of the two are improved, so that the impact force can be transmitted to the rear at the same time through the first force transmission beam 2 and the front floor under longitudinal beam 8.

[0057] It should be noted that the first force transmission beam 2 and the front floor under longitudinal beam 8 are arranged in correspondence with each other in the up-down direction of the vehicle. The projections of the two in the up-down direction of the vehicle at least partially overlap. A second cavity is formed between the front floor under longitudinal beam 8 and the front floor panel 5. Compared with the first cavity in the first force transmission beam 2, the second cavity is located below the front floor panel 5, and the first cavity and the second cavity are arranged in a stacked manner. This is also conducive to improving the buffering and transmission performance of the two to the impact force, and also conducive to improving the absorption effect of the impact energy.

[0058] As a preferred embodiment, as shown in FIG. 1, Figure 1 As shown in FIG. 1, the vehicle body force transmission structure in the embodiment further comprises a third force transmission beam 6 arranged side by side on the inner side of the rocker beam 1. The rear end of the third force transmission beam 6 is connected to the front end of the first force transmission beam 2, and the front end of the third force transmission beam 6 extends to the front wall lower panel 7. Here, by arranging the third force transmission beam 6, the transmission path of the impact force is further enriched, and in the front and side impact, the impact force can be dispersed and transmitted through the first force transmission beam 2, the second force transmission beam 3 and the third force transmission beam 6, which is conducive to improving the uniformity of the impact force dispersion.

[0059] In order to facilitate the connection of the third force transmission beam 6 and the first force transmission beam 2, as shown in FIG. 1, Figures 7 to 9 The front end of the first force transmission beam 2 has a first inclined surface 302 arranged in an inclined manner due to the connection with the curved second force transmission beam 3. The rear end of the third force transmission beam 6 has a second inclined surface 601 arranged in a matched manner with the first inclined surface 302, and the first force transmission beam 2 and the third force transmission beam 6 are connected through the first inclined surface 302 and the second inclined surface 601.

[0060] The arrangement of the first inclined surface 302 and the second inclined surface 601 is conducive to increasing the connection strength between the first force transmission beam 2 and the third force transmission beam 6, so that the two are not easy to separate. At the same time, the impact force has good force transmission continuity in the process of being transmitted to the first force transmission beam 2 through the third force transmission beam 6. In addition, a third cavity is formed between the third force transmission beam 6 and the front wall lower panel 7 and the front floor panel 5, which also improves the strength and force transmission effect of the third force transmission beam 6.

[0061] Referring to Figure 4 and Figure 6As shown, a rear section 701 of the front engine compartment longitudinal beam is located below the lower panel 7 of the front bulkhead, with its rear end connected to the front end of the longitudinal beam 8 under the front floor. The third force transmission beam 6 is vertically aligned with the rear section 701 of the front engine compartment longitudinal beam. This arrangement improves the structural strength and force transmission performance of the third force transmission beam 6 and the rear section 701 of the front engine compartment longitudinal beam. Specifically, the vertical alignment of the third force transmission beam 6 and the rear section 701 of the front engine compartment longitudinal beam means that their projections in the vertical direction of the vehicle at least partially overlap. Preferably, the rear section 701 of the front engine compartment longitudinal beam is integrally formed below the lower panel 7 of the front bulkhead to achieve higher structural strength and force transmission performance.

[0062] like Figure 1 , Figure 7 and Figure 8 As shown in the diagram, in this embodiment, the first force transmission beam 2, the second force transmission beam 3, and the third force transmission beam 6 are connected to form a "Y"-shaped force transmission structure, which helps to improve the safety performance of the front and middle parts of the vehicle body. In the event of a frontal collision, the impact force transmitted from the front can be distributed and transmitted to the sill beam 1 and the front floor under-longitudinal beam 8 through the "Y"-shaped force transmission structure, which helps to improve the uniformity of force transmission in the sill beam 1 and the front floor under-longitudinal beam 8.

[0063] In traditional solutions, the sill beam 1 is supported and transmitted in the Y-direction (left-right direction of the vehicle) only through the seat crossbeam. In this embodiment, because the second force transmission beam 3 in the "Y"-shaped force transmission structure is connected to the sill beam 1, it is also beneficial to improve the Y-direction support performance of the sill beam 1 compared to the traditional solution. In a side collision, the collision force can be transmitted along the curved second force transmission beam 3 to the first force transmission beam 2, the third force transmission beam 6, and the longitudinal beam 8 under the front floor, realizing multi-path force transmission, thereby improving side collision performance.

[0064] The vehicle body force transmission structure in this embodiment also includes a seat crossbeam whose end is connected to the sill beam 1. The seat crossbeam intersects with and is connected to the first force transmission beam 2. By intersecting the seat crossbeam with the first force transmission beam 2, the collision force can be transmitted between the first force transmission beam 2 and the seat crossbeam, which helps to increase the force transmission path. Furthermore, the seat crossbeam, the first force transmission beam 2, and the sill beam 1 cooperate with each other to resist the impact of the collision force on the sill beam 1.

[0065] Specifically, such as Figure 2 As shown, the seat crossbeam includes a front seat crossbeam 9 and a rear seat crossbeam 10 arranged at intervals. The front seat crossbeam 9 is positioned near the front end of the first force transmission beam 2. The connection point between the second force transmission beam 3 and the first force transmission beam 2 is located on the front side of the front seat crossbeam 9. By positioning the front seat crossbeam 9 near the front end of the first force transmission beam 2, the front seat crossbeam 9 can act as a stop beam for the collision force transmission between the second force transmission beam 3 and the third force transmission beam 6, which is beneficial for the dispersion and transmission of collision forces.

[0066] As a preferred embodiment, the front seat cross beam 9 and the rear seat cross beam 10 are arranged across the top of the first force transmission beam 2, intersecting the first force transmission beam 2 and being connected together. In this way, in the event of a side impact, the second force transmission beam 3 can also act as a side impact stopping beam, thereby improving the stability of the rocker beam 1. In particular, for vehicles carrying a battery pack, by improving the structural stability of the rocker beam 1, it is also possible to prevent the battery pack arranged between the two rocker beams 1 and the passenger compartment from being damaged by the impact force, thereby improving the safety performance of the vehicle.

[0067] As shown in Figure 3 , a triangular force transmission structure is formed between the second force transmission beam 3, the front portion of the rocker beam 1 and the end portion of the front seat cross beam 9. By taking advantage of the high structural stability of the triangular structure, the support effect on the rocker beam 1 is improved, and the rocker beam 1 has better structural stability. Furthermore, the front seat cross beam 9 and the rear seat cross beam 10 are both arranged to form a fourth cavity with the front floor panel 5, so as to improve the structural strength and force transmission performance of the two.

[0068] As a preferred embodiment, as shown in Figure 1 and Figure 11 , a diagonal support beam 11 is arranged between the first force transmission beam 2 and the rocker beam 1. The diagonal support beam 11 is arranged on the front side of the rear seat cross beam 10 and close to the rear seat cross beam 10. In this way, the diagonal support beam 11 can cooperate with the second force transmission beam 3 to further improve the Y-direction support effect on the rocker beam 1, thereby improving the structural strength and stability of the rocker beam 1. In addition, by arranging the diagonal support beam 11 close to the rear seat cross beam 10, i.e. close to the position of the B pillar, the safety of side impact is also improved, thereby improving the safety of the occupants in the vehicle.

[0069] In terms of specific structure, the bottom of the diagonal support beam 11 is connected to the front floor panel 5, the outer side of the diagonal support beam 11 is connected to the rocker beam 1, and the inner side of the diagonal support beam 11 is connected to the first force transmission beam 2. A fifth cavity is formed between the diagonal support beam 11, the front floor panel 5, the rocker beam 1 and the first force transmission beam 2, which is conducive to further improving the force transmission performance of the diagonal support beam 11. As shown in Figure 11 , the side walls on the front and rear sides of the diagonal support beam 11 are triangular, which can take advantage of the high stability of the triangular shape to further improve the stability of the diagonal support beam 11.

[0070] The second force transmission beam 3, the front seat cross beam 9, the rear seat cross beam 10, the diagonal support beam 11 and the rear floor front cross beam 4 in the embodiment cooperate to support the rocker beam 1, which also improves the connection strength between the rocker beam 1 and the surrounding components. Even if a collision occurs, the rocker beam 1 is less likely to fail due to displacement or tearing.

[0071] As a preferred embodiment, as shown in Figure 5 The rear end of the first transmission beam 2 is connected with the rocker beam 1 and the front cross beam 4 of the rear floor through the front part of the rear floor longitudinal beam 12. The first transmission beam 2, the second transmission beam 3, the rocker beam 1 and the front part of the rear floor longitudinal beam 12 are connected to form a ring structure 100. Here, the first transmission beam 2, the rocker beam 1 and the front cross beam 4 of the rear floor are connected together by means of the rear floor longitudinal beam 12, which is conducive to the transmission of the impact force among each other, thereby improving the transmission performance. At the same time, the ring structure 100 can uniformly disperse the impact force to the surrounding components, has a good energy absorption effect, and can effectively improve the torsional stiffness of the vehicle body, which is conducive to preventing the rocker beam 1 from being offset due to excessive force.

[0072] Specifically, as shown in Figure 3 and Figure 4 and Figure 12 The rear end of the first transmission beam 2 is spaced apart from the front cross beam 4 of the rear floor in the front-rear direction of the vehicle, the end of the front cross beam 4 of the rear floor is connected to the inner side of the rocker beam 1, the outer side of the front part of the rear floor longitudinal beam 12 is connected to the bottom of the rocker beam 1, and the inner side of the front part of the rear floor longitudinal beam 12 is connected to the bottom of the front cross beam 4 of the rear floor. Further, a cross beam reinforcement plate 401 extending in the left-right direction of the vehicle is arranged between the inner side of the rocker beam 1 and the side wall of the center tunnel 13, the rear side of the cross beam reinforcement plate 401 is connected to the front cross beam 4 of the rear floor, and the front side of the cross beam reinforcement plate 401 is connected to the front floor panel 5.

[0073] The rear end of the first transmission beam 2 specifically extends to the front side of the cross beam reinforcement plate 401 and is connected to the cross beam reinforcement plate 401. The front part of the rear floor longitudinal beam 12 is connected to the cross beam reinforcement plate 401 and is connected to the first transmission beam 2 through the cross beam reinforcement plate 401. The rear end of the first transmission beam 2 is specifically connected to the front part of the rear floor longitudinal beam 12 through the cross beam reinforcement plate 401 and is connected to the rocker beam 1 and the front cross beam 4 of the rear floor through the front part of the rear floor longitudinal beam 12. The cross beam reinforcement plate 401 not only further strengthens the connection strength between the first transmission beam 2, the rocker beam 1 and the front cross beam 4 of the rear floor, but also helps to improve the structural strength of the front cross beam 4 of the rear floor.

[0074] It can be understood that in other embodiments, the front part of the rear floor longitudinal beam 12 can also be directly connected to the rear end of the first transmission beam 2, at which time the cross beam reinforcement plate 401 is not needed, so that the ring structure 100 can also be formed and has good transmission performance.

[0075] In this embodiment, as shown in Figure 1As shown in the figure, the front floor lower panel 7, the front seat cross beam 9, the rear seat cross beam 10 and the rear floor front cross beam 4 can form four transverse (left-right direction of the whole vehicle) force transmission paths, the two rocker beams 1 and the center tunnel 13 form three longitudinal (front-rear direction of the whole vehicle) force transmission paths, and the two first force transmission beams 2, the second force transmission beam 3 and the third force transmission beam 6 form two "Y" shaped force transmission paths respectively. The transverse force transmission path, the longitudinal force transmission path and the "Y" shaped force transmission path are connected with each other to form a network-shaped force transmission path, so that the collision force can be transmitted and dispersed in the front-rear direction and the left-right direction of the whole vehicle, which not only helps to improve the force transmission performance, but also improves the strength and rigidity of the vehicle body and has good deformation resistance.

[0076] The vehicle body force transmission structure described in the embodiment can enrich the force transmission paths of the vehicle body force transmission structure by arranging the first force transmission beam 2 extending in the front-rear direction of the whole vehicle, the second force transmission beam 3 bent and connected with the rocker beam 1, and the third force transmission beam 6 connected with the first force transmission beam 2, and can improve the structural stability of the rocker beam 1 in various crash conditions, thereby improving the safety of the vehicle.

[0077] Embodiment Two

[0078] The embodiment relates to a vehicle provided with the vehicle body force transmission structure described above.

[0079] The vehicle described in the embodiment can improve the crash safety of the vehicle by arranging the vehicle body force transmission structure.

[0080] The above description is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A vehicle body force transmission structure, characterized in that: a first force transmission beam (2) is arranged side by side inside a rocker beam (1), and a second force transmission beam (3) is connected to a front end of the first force transmission beam (2); a rear end of the first force transmission beam (2) extends to a front floor cross beam (4), the second force transmission beam (3) gradually bends to a side of the rocker beam (1) from back to front along a front-rear direction of the vehicle, and a front end of the second force transmission beam (3) is connected to the rocker beam (1).

2. The vehicle body force transmission structure according to claim 1, characterized in that: the first force transmission beam (2) and the second force transmission beam (3) are arranged above a front floor panel (5), and a third force transmission beam (6) is arranged side by side inside the rocker beam (1); a rear end of the third force transmission beam (6) is connected to a front end of the first force transmission beam (2), and a front end of the third force transmission beam (6) extends to a lower panel (7) of a front bulkhead.

3. The vehicle body force transmission structure according to claim 2, characterized in that: a front floor lower longitudinal beam (8) is arranged below the front floor panel (5), and the first force transmission beam (2) is arranged in correspondence with the front floor lower longitudinal beam (8) in a vertical direction.

4. The vehicle body force transmission structure according to claim 3, characterized in that: a front engine compartment longitudinal beam rear section (701) is arranged below the lower panel (7) of the front bulkhead, a rear end of the front engine compartment longitudinal beam rear section (701) is connected to a front end of the front floor lower longitudinal beam (8), and the third force transmission beam (6) is arranged in correspondence with the front engine compartment longitudinal beam rear section (701) in the vertical direction.

5. The vehicle body force transmission structure according to claim 2, characterized in that: a seat cross beam is connected to the rocker beam (1); and the seat cross beam intersects and is connected to the first force transmission beam (2).

6. The vehicle body force transmission structure according to claim 5, characterized in that: the seat cross beam includes a front seat cross beam (9) and a rear seat cross beam (10) arranged in a front-rear direction; and the front seat cross beam (9) is arranged close to a front end of the first force transmission beam (2).

7. The vehicle body force transmission structure according to claim 6, characterized in that: an inclined support beam (11) is arranged between the first force transmission beam (2) and the rocker beam (1), and the inclined support beam (11) is arranged on a front side of the rear seat cross beam (10) and close to the rear seat cross beam (10).

8. The vehicle body force transmission structure according to claim 1, characterized in that: a front portion of a rear floor longitudinal beam (12) is connected to the rocker beam (1) and the front floor cross beam (4) through a rear end of the first force transmission beam (2); and the first force transmission beam (2), the second force transmission beam (3), the rocker beam (1), and the front portion of the rear floor longitudinal beam (12) form a ring structure (100).

9. The vehicle body force transmission structure according to any one of claims 1 to 8, characterized in that: the first force transmission beam (2) and the second force transmission beam (3) are integrally formed.

10. A vehicle, characterized in that: the vehicle is provided with the vehicle body force transmission structure according to any one of claims 1 to 9. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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