Automobile body frame structure and automobile

Abstract

The utility model provides an automobile body frame structure and an automobile. The automobile body frame structure comprises a doorsill beam, a seat cross beam and a stand column lap joint piece. The end part of the seat cross beam is connected with the inner side wall of the doorsill beam; the stand column lap joint piece comprises a lap joint body and a reinforcing part extending out of the edge of one side of the lap joint body, the lap joint body is in lap joint with the seat cross beam, and the reinforcing part is connected with the end of the seat cross beam and the inner side wall of the threshold beam. In the utility model, the reinforcing part and the inner side wall of the doorsill beam jointly form a barrier to ensure that the contact area of the seat cross beam and the inner side wall of the doorsill beam can be covered, and the line-surface connection between the seat cross beam and the doorsill beam is changed into surface-surface connection through the reinforcing part, so that the side strength of the doorsill beam can be obviously improved; and the threshold beam can be fully crushed to absorb energy, so that the failure risk is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body frame structures, in particular to a vehicle body frame structure and a car. Background Art

[0002] At present, in order to improve the safety performance of the battery pack and achieve the purpose of lightweight, the body frame structure often uses extruded aluminum seat crossbeams and extruded aluminum door sill beams. When a collision occurs, when the lateral impact is too large, the seat crossbeam and the door sill beam form a contact form similar to a line-surface (the cross section of the seat crossbeam is a line, and the inner side of the door sill beam is a surface), and the door sill beam is easily penetrated by the crossbeam, which fails to achieve the purpose of crushing and absorbing energy. Utility Model Content

[0003] The utility model provides a vehicle body frame structure and a vehicle, so as to solve the problem that a door sill beam in the existing vehicle body frame structure is easily penetrated by a cross beam.

[0004] A vehicle body frame structure includes a sill beam, a seat cross beam and a pillar lap member;

[0005] The end of the seat cross beam is connected to the inner side wall of the door sill beam;

[0006] The pillar lap joint comprises a lap body and a reinforcing portion extending from a side edge of the lap body, the lap body is lapped on the seat cross beam, and the reinforcing portion is connected to the end of the seat cross beam and the inner side wall of the door sill beam.

[0007] Preferably, the pillar bridging piece further comprises a first flange extending from both ends of the bridging body along the front-rear direction of the vehicle;

[0008] The first flange is overlapped on the door sill beam.

[0009] Preferably, a projection of the reinforcement portion along the left-right direction of the vehicle at least partially overlaps with a projection of the seat cross beam along the left-right direction of the vehicle.

[0010] Preferably, the vehicle body frame structure further includes reinforcing ribs;

[0011] The reinforcing rib is arranged in the door sill beam.

[0012] Preferably, the reinforcing ribs include at least one first reinforcing rib arranged along the left-right direction of the vehicle and at least one second reinforcing rib arranged along the up-down direction of the vehicle;

[0013] At least one of the first reinforcing ribs cooperates with at least one of the second reinforcing ribs to divide the inner space of the door sill beam to form at least four collision energy absorbing cavities.

[0014] Preferably, a projection of at least one of the first reinforcing ribs along the left-right direction of the vehicle is located within an overlapping region of projections of the seat cross beam and the reinforcing portion along the left-right direction of the vehicle.

[0015] Preferably, the vehicle body frame structure further comprises a seat mounting bracket, wherein the seat mounting bracket is mounted on an end portion of the seat cross beam and connected to the door sill beam.

[0016] Preferably, the seat mounting bracket comprises a bracket body, two support plates extending from both side edges of the bracket body in the up-down direction of the vehicle, a second flange extending from the lower side of each of the support plates in the front-rear direction of the vehicle, and a third flange extending from the outer side of each of the support plates in the front-rear direction of the vehicle;

[0017] The bracket body, the two support plates and the two second flanges are overlapped on the seat cross beam, and the third flange is overlapped on the reinforcement part.

[0018] Preferably, the cross-sectional area of ​​the seat mounting bracket along the front-rear direction of the vehicle gradually increases from inside to outside along the left-right direction of the vehicle.

[0019] A car comprises the vehicle body frame structure.

[0020] The vehicle body frame structure provided by the embodiment of the utility model includes a threshold beam, a seat cross beam and a column lap joint, the column lap joint includes a lap joint body and a reinforcement part, when installing, the end of the seat cross beam is connected to the inner side wall of the threshold beam, the lap joint body is overlapped on the seat cross beam, the reinforcement part is extended downward from one side edge of the lap joint body along the up and down direction of the vehicle, and is connected to the end of the seat cross beam and the inner side wall of the threshold beam; in this way, the reinforcement part and the inner side wall of the threshold beam are arranged to form a barrier together, ensuring that the contact area between the seat cross beam and the inner side wall of the threshold beam can be covered, the line-surface connection between the seat cross beam and the threshold beam is changed to surface-surface connection through the reinforcement part, the side strength of the threshold beam can be significantly improved, so that the seat cross beam is difficult to penetrate the threshold beam, the threshold beam can fully crush and absorb energy, and the failure risk is significantly reduced. In addition, since the column lap joint is a steel material with strong toughness and the threshold beam is an extruded aluminum profile with high strength, the two are superimposed together to further improve the support strength of the vehicle body frame structure.

[0021] When a side collision occurs, the sill beam transmits force in the left and right directions of the vehicle, squeezing the reinforcement of the pillar lap joint inward, and then the reinforcement squeezes the seat crossbeam. The reinforcement is arranged between the seat crossbeam and the sill beam, which can transform the traditional line-to-surface contact into surface-to-surface contact, effectively preventing the sill from being penetrated. In addition, since the pillar lap joint is made of high-strength steel sheet metal, it has high toughness and strength, which can further improve the supporting strength of the body frame structure. By optimizing the structure on the existing basis, the shortcomings of the aluminum profile sill beam, which has poor toughness and is easily penetrated by the seat crossbeam and fails in pillar collision conditions, are solved; without increasing costs, the safety of the battery pack is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is an isometric view of the vehicle body frame structure in one embodiment of the utility model;

[0024] Figure 2 is an isometric view of a threshold beam in one embodiment of the utility model;

[0025] Figure 3 It is a cross-sectional view of a threshold beam in one embodiment of the utility model.

[0026] Among them, 1. door sill beam; 2. seat cross beam; 3. column lap part; 31. lap body; 32. reinforcement part; 33. first flange; 4. reinforcing rib; 41. first reinforcing rib; 42. second reinforcing rib; 5. seat mounting bracket; 51. bracket body; 52. support plate; 53. second flange; 54. third flange. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The utility model embodiment provides a vehicle body frame structure, referring to Figure 1 and Figure 2 The vehicle body frame structure includes a door sill beam 1, a seat cross beam 2 and a pillar lap joint 3; the end of the seat cross beam 2 is connected to the inner wall of the door sill beam 1; the pillar lap joint 3 includes a lap joint body 31 and a reinforcement part 32 extending from a side edge of the lap joint body 31, the lap joint body 31 is lapped on the seat cross beam 2, and the reinforcement part 32 is connected to the end of the seat cross beam 2 and the inner wall of the door sill beam 1.

[0031] As an example, the vehicle body frame structure includes a sill beam 1, a seat cross beam 2 and a pillar lap joint 3, and the pillar lap joint 3 includes a lap joint body 31 and a reinforcement portion 32. During installation, the end of the seat cross beam 2 is connected to the inner wall of the sill beam 1, and the lap joint body 31 is overlapped on the seat cross beam 2. The reinforcement portion 32 extends downward from a side edge of the lap joint body 31 along the up and down direction of the vehicle, and is connected to the end of the seat cross beam 2 and the inner wall of the sill beam 1; the reinforcement portion 32 is arranged in this way to form a barrier together with the inner wall of the sill beam 1 to ensure that the contact area between the seat cross beam 2 and the inner wall of the sill beam 1 can be covered, and the line-to-surface connection between the seat cross beam 2 and the sill beam 1 is changed to a surface-to-surface connection through the reinforcement portion 32, and the side strength of the sill beam 1 can be significantly improved, so that the seat cross beam 2 is difficult to penetrate the sill beam 1, and the sill beam 1 can be fully crushed to absorb energy, and the risk of failure is significantly reduced. In addition, since the pillar lap part 3 is made of steel with high toughness and the door sill beam 1 is made of extruded aluminum with high strength, the two are stacked together to further improve the supporting strength of the body frame structure. The pillar lap part 3 can be a B-pillar lap part or a C-pillar lap part, and the corresponding seat cross beam 2 can be a front seat rear cross beam or a rear seat rear cross beam.

[0032] In this example, when a side collision occurs, the sill beam 1 transmits force in the left-right direction of the vehicle, squeezing the reinforcing portion 32 of the pillar lap joint 3 inward, and then the reinforcing portion 32 squeezes the seat cross beam 2. The reinforcing portion 32 is arranged between the seat cross beam 2 and the sill beam 1, which can transform the traditional line-to-surface contact into surface-to-surface contact, effectively preventing the sill from being penetrated. In addition, since the pillar lap joint 3 is a high-strength steel sheet metal part with high toughness and strength, the supporting strength of the vehicle body frame structure can be further improved. By optimizing the structure on the existing basis, the shortcomings of the aluminum profile sill beam 1, which has poor toughness and is easily penetrated and failed by the seat cross beam 2 in the pillar collision condition, are solved; and the cost is not increased.

[0033] In one embodiment, referring to Figure 1 and Figure 2 The pillar lap joint 3 further includes a first flange 33 extending from both ends of the lap joint body 31 along the front-rear direction of the vehicle; the first flange 33 is lapped on the door sill beam 1.

[0034] As an example, the pillar joint 3 also includes a first flange 33, which extends from both ends of the joint body 31 along the front-rear direction of the vehicle; the first flange 33 is overlapped on the sill beam 1, which can increase the overlap area between the pillar joint 3 and the sill beam 1, thereby enhancing the connection reliability between the pillar joint 3 and the sill beam 1.

[0035] In one embodiment, referring to Figure 1 and Figure 2 , the projection of the reinforcement portion 32 along the left-right direction of the vehicle at least partially overlaps with the projection of the seat cross beam 2 along the left-right direction of the vehicle.

[0036] As an example, the projection of the reinforcement part 32 along the left-right direction of the vehicle overlaps at least partially with the projection of the seat cross beam 2 along the left-right direction of the vehicle. In this way, the reinforcement part 32 and the inner side wall of the threshold beam 1 together form a barrier to ensure that the contact area between the seat cross beam 2 and the inner side wall of the threshold beam 1 can be covered. The line-surface connection between the seat cross beam 2 and the threshold beam 1 is changed to surface-surface connection through the reinforcement part 32. The side strength of the threshold beam 1 can be significantly improved, making it difficult for the seat cross beam 2 to penetrate the threshold beam 1. The threshold beam 1 can fully crush and absorb energy, and the risk of failure is significantly reduced. Among them, the best arrangement scheme is that the projection of the reinforcement part 32 along the left-right direction of the vehicle just completely covers the projection of the seat cross beam 2 along the left-right direction of the vehicle.

[0037] In one embodiment, referring to Figure 3 The vehicle body frame structure further includes a reinforcing rib 4 , which is arranged in the door sill beam 1 .

[0038] As an example, the vehicle body frame structure further includes a reinforcing rib 4 ; the reinforcing rib 4 is disposed in the sill beam 1 , so that the reinforcing rib 4 can improve the supporting strength of the sill beam 1 .

[0039] In one embodiment, referring to Figure 3 The reinforcing rib 4 includes at least one first reinforcing rib 41 arranged along the left-right direction of the vehicle and at least one second reinforcing rib 42 arranged along the up-down direction of the vehicle; at least one first reinforcing rib 41 and at least one second reinforcing rib 42 cooperate to divide the internal space of the sill beam 1 to form at least four collision energy absorption chambers.

[0040] As an example, the reinforcing rib 4 includes at least one first reinforcing rib 41 and at least one second reinforcing rib 42; the first reinforcing rib 41 is arranged along the left-right direction of the vehicle, and the second reinforcing rib 42 is arranged along the up-down direction of the vehicle; at least one first reinforcing rib 41 and at least one second reinforcing rib 42 cooperate to divide the internal space of the sill beam 1 to form at least four collision energy absorption cavities, which can absorb collision force, thereby effectively improving the supporting strength of the sill beam 1.

[0041] In one embodiment, referring to Figure 3 The projection of at least one first reinforcing rib 41 along the left-right direction of the vehicle is located in the overlapping area of ​​the projections of the seat cross beam 2 and the reinforcing portion 32 along the left-right direction of the vehicle.

[0042] As an example, the projection of at least one first reinforcing rib 41 along the left-right direction of the vehicle is located in the overlapping area of ​​the projections of the seat cross beam 2 and the reinforcement portion 32 along the left-right direction of the vehicle. Specifically, the distribution of the reinforcing ribs 4 in the sill beam 1 is changed, and the first reinforcing rib 41 in the sill beam 1 is set between the upper and lower boundaries of the seat cross beam 2. The first reinforcing rib 41 is opposite to the reinforcement portion 32 of the column lap joint 3, thereby further supporting the extruded surface of the sill beam 1, making it difficult for the seat cross beam 2 to penetrate the sill beam 1, and the sill beam 1 can be fully crushed to absorb energy.

[0043] In one embodiment, referring to Figure 1 The vehicle body frame structure further includes a seat mounting bracket 5 , which is mounted at the end of the seat cross beam 2 and connected to the door sill beam 1 .

[0044] As an example, the vehicle body frame structure further includes a seat mounting bracket 5, which is mounted at the end of the seat cross beam 2 and connected to the threshold beam 1. The seat mounting bracket 5 can play a supporting role and firmly mount the seat cross beam 2 on the threshold beam 1. For example, the CNCAP column collision position is roughly equivalent to the seat cross beam 2 along the left and right direction of the vehicle. When the column squeezes the threshold beam 1, the threshold beam 1 is stressed, causing the seat cross beam 2 to squeeze the threshold beam 1 synchronously. At this time, the seat mounting bracket 5 can play a supporting role.

[0045] In one embodiment, referring to Figure 1 The seat mounting bracket 5 includes a bracket body 51, two support plates 52 extending from both side edges of the bracket body 51 along the up-down direction of the vehicle, a second flange 53 extending from the lower side of each support plate 52 along the front-back direction of the vehicle, and a third flange 54 extending from one end of each support plate 52 along the front-back direction of the vehicle; the bracket body 51, the two support plates 52 and the two second flanges 53 are overlapped on the seat cross beam 2, and the third flange 54 is overlapped on the reinforcement part 32.

[0046] As an example, the seat mounting bracket 5 includes a bracket body 51, two support plates 52, a second flange 53 and a third flange 54; the bracket body 51 is a base, the two support plates 52 are respectively extended from the two side edges of the bracket body 51 along the up-down direction of the vehicle, and the two second flanges 53 are respectively extended from the lower side of each support plate 52 along the front-back direction of the vehicle. The bracket body 51, the two support plates 52 and the two second flanges 53 are overlapped on the seat cross beam 2, so that it is convenient to install the seat mounting bracket 5 on the seat cross beam 2. The third flange 54 extends from the outer side of each support plate 52 in a direction perpendicular to the support plate 52, and the third flange 54 is overlapped on the reinforcement part 32, so that the overlap area between the seat mounting bracket 5 and the door sill beam 1 can be increased, thereby improving the support strength, making it difficult for the seat cross beam 2 to penetrate the door sill beam 1, and the door sill beam 1 can be fully crushed to absorb energy.

[0047] In one embodiment, the cross-sectional area of ​​the seat mounting bracket 5 along the front-rear direction of the vehicle gradually increases from the inside to the outside along the left-right direction of the vehicle.

[0048] As an example, the cross-sectional area of ​​the seat mounting bracket 5 along the front-rear direction of the vehicle gradually expands from the inside to the outside along the left-right direction of the vehicle, which can expand the overlap area between the seat mounting bracket 5 and the threshold beam 1 and play a certain supporting role, making it difficult for the seat cross beam 2 to penetrate the threshold beam 1, and the threshold beam 1 can fully crush and absorb energy.

[0049] An embodiment of the utility model provides a car, comprising a vehicle body frame structure.

[0050] As an example, the vehicle body frame structure includes a sill beam 1, a seat cross beam 2 and a pillar lap joint 3, and the pillar lap joint 3 includes a lap joint body 31 and a reinforcement portion 32. During installation, the end of the seat cross beam 2 is connected to the inner wall of the sill beam 1, and the lap joint body 31 is overlapped on the seat cross beam 2. The reinforcement portion 32 extends downward from a side edge of the lap joint body 31 along the up and down direction of the vehicle, and is connected to the end of the seat cross beam 2 and the inner wall of the sill beam 1; the reinforcement portion 32 is arranged in this way to form a barrier together with the inner wall of the sill beam 1 to ensure that the contact area between the seat cross beam 2 and the inner wall of the sill beam 1 can be covered, and the line-to-surface connection between the seat cross beam 2 and the sill beam 1 is changed to a surface-to-surface connection through the reinforcement portion 32, and the side strength of the sill beam 1 can be significantly improved, so that the seat cross beam 2 is difficult to penetrate the sill beam 1, and the sill beam 1 can be fully crushed to absorb energy, and the risk of failure is significantly reduced. In addition, since the pillar lap part 3 is made of steel with high toughness and the door sill beam 1 is made of extruded aluminum with high strength, the two are stacked together to further improve the supporting strength of the body frame structure. The pillar lap part 3 can be a B-pillar lap part or a C-pillar lap part, and the corresponding seat cross beam 2 can be a front seat rear cross beam or a rear seat rear cross beam.

[0051] In this example, when a collision occurs, the sill beam 1 transmits force in the left-right direction of the vehicle, squeezing the reinforcing portion 32 of the pillar lap joint 3 inward, and then the reinforcing portion 32 squeezes the seat cross beam 2. The reinforcing portion 32 is arranged between the seat cross beam 2 and the sill beam 1, which can convert the traditional line-to-surface contact into surface-to-surface contact, effectively preventing the sill from being penetrated. In addition, since the pillar lap joint 3 is a high-strength steel sheet metal with high toughness and strength, the supporting strength of the vehicle body frame structure can be further improved. By optimizing the structure on the existing basis, the shortcomings of the aluminum profile sill beam 1, such as poor toughness and easy failure due to penetration by the seat cross beam 2 in the pillar collision condition, are solved; and the cost is not increased, and the safety of the battery pack is further improved.

[0052] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A vehicle body frame structure, characterized in that: Includes sill beams, seat crossbars and column laps; The end of the seat cross beam is connected to the inner side wall of the door sill beam; The pillar lap joint comprises a lap body and a reinforcing portion extending from a side edge of the lap body, the lap body is lapped on the seat cross beam, and the reinforcing portion is connected to the end of the seat cross beam and the inner side wall of the door sill beam.

2. The vehicle body frame structure according to claim 1, characterized in that: The column bridging piece further includes a first flange extending from both ends of the bridging body along the front-rear direction of the vehicle; The first flange is overlapped on the door sill beam.

3. The vehicle body frame structure according to claim 1, characterized in that: A projection of the reinforcement portion along the left-right direction of the vehicle at least partially overlaps with a projection of the seat cross beam along the left-right direction of the vehicle.

4. The vehicle body frame structure according to claim 1, characterized in that: The vehicle body frame structure also includes reinforcing ribs; The reinforcing rib is arranged in the door sill beam.

5. The vehicle body frame structure according to claim 4, characterized in that: The reinforcing ribs include at least one first reinforcing rib arranged along the left-right direction of the vehicle and at least one second reinforcing rib arranged along the up-down direction of the vehicle; At least one of the first reinforcing ribs cooperates with at least one of the second reinforcing ribs to divide the inner space of the door sill beam to form at least four collision energy absorbing cavities.

6. The vehicle body frame structure according to claim 5, characterized in that: The projection of at least one of the first reinforcing ribs along the left-right direction of the vehicle is located in an overlapping area of ​​the projections of the seat cross beam and the reinforcing portion along the left-right direction of the vehicle.

7. The vehicle body frame structure according to claim 1, characterized in that: The vehicle body frame structure further comprises a seat mounting bracket, which is mounted on an end of the seat cross beam and connected to the door sill beam.

8. The vehicle body frame structure according to claim 7, characterized in that: The seat mounting bracket includes a bracket body, two support plates extending from both sides of the bracket body in the up-down direction of the vehicle, a second flange extending from the lower side of each support plate in the front-rear direction of the vehicle, and a third flange extending from the outer side of each support plate in the front-rear direction of the vehicle; The bracket body, the two support plates and the two second flanges are overlapped on the seat cross beam, and the third flange is overlapped on the reinforcement part.

9. The vehicle body frame structure according to claim 8, characterized in that: The cross-sectional area of ​​the seat mounting bracket along the front-rear direction of the vehicle gradually increases from the inside to the outside along the left-right direction of the vehicle.

10. An automobile, characterized in that: The vehicle body frame structure comprises the vehicle body frame structure as described in any one of claims 1 to 9.

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