CN219838610U

CN219838610U - Lower automobile body that security is high and car thereof

Info

Publication number: CN219838610U
Application number: CN202223511911.XU
Authority: CN
Inventors: 安超群
Original assignee: Human Horizons Shandong Technology Co Ltd
Current assignee: Human Horizons Shandong Technology Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-10-17
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of automobiles and discloses a lower automobile body with high safety and an automobile thereof. According to the lower vehicle body with high safety and the vehicle with the lower vehicle body, the main energy absorption box extends outwards, and the main energy absorption box is connected with the front cabin boundary beam, so that the main energy absorption box can be overlapped with the collision barrier by a certain amount, more efficient energy absorption and vehicle transverse deflection can be generated in the small-offset collision process, and the safety performance of the vehicle small-offset collision is improved.

Description

Lower automobile body that security is high and car thereof

Technical Field

The utility model relates to the technical field of automobiles, in particular to a lower automobile body with high safety and an automobile with the lower automobile body.

Background

Automotive crash safety relates to many aspects of vehicles including body structure, roof and door strength, window glass, steering systems, interior trim, seat belts, seats, head rests, airbags, and the like, and can be categorized into two general categories, body safety structure and occupant protection systems. The body structure of a motor vehicle employs a series of anti-collision members in order to minimize deformation of the passenger compartment during a collision, and to protect the occupants from injury as much as possible. Other safety components of automobiles also employ structures and materials that are advantageous for protecting occupants as much as possible. The existing energy-absorbing box can play a certain role in absorbing energy during a frontal collision, but cannot play a role well during a small offset collision.

Disclosure of Invention

The purpose of the utility model is that: the lower vehicle body and the vehicle with high safety are provided, the main energy absorption box extends outwards, and the main energy absorption box is connected with the front cabin boundary beam, so that the main energy absorption box can be overlapped with the collision barrier by a certain amount, more efficient energy absorption and vehicle transverse deflection can be generated in the small-offset collision process, and the safety performance of the vehicle small-offset collision is improved.

In order to achieve the above purpose, the utility model provides a lower vehicle body with high safety, which comprises a vehicle frame, wherein the vehicle frame is provided with an anti-collision cross beam, two longitudinal beams and a front cabin side beam, main energy absorption boxes are respectively connected between the front ends of the two longitudinal beams and the anti-collision cross beam, the rear ends of the two longitudinal beams are respectively connected with a hinge post, the main energy absorption boxes extend outwards and are connected with the front ends of the front cabin side beam, and the rear ends of the front cabin side beam are connected with the hinge posts.

Preferably, the two sides of the frame are respectively provided with a threshold, the rear ends of the longitudinal beams are connected with the thresholds on the same side, and the longitudinal beams on the same side, the hinge columns and the thresholds are connected to form a left force transmission path.

As a preferable scheme, the frame is provided with a frame beam and a floor beam, two ends of the floor beam are respectively connected with the doorsills on two sides, the two longitudinal beams are connected through the frame beam, the floor beam is connected with a middle channel, the front end of the middle channel extends forwards to be connected with the frame beam, and the longitudinal beams, the frame beam, the middle channel and the floor beam are connected to form a middle force transmission path.

Preferably, the frame is connected with a battery pack, the rear end of the longitudinal beam extends downwards to form a battery connecting part, the battery connecting part is connected with the battery pack, and the longitudinal beam is connected with the battery pack to form a lower force transmission path.

Preferably, the battery pack is located at the lower part between the two doorsills, and transverse ribs are arranged in the doorsills, wherein the arrangement number of the transverse ribs at the upper part is larger than that of the transverse ribs at the lower part in the doorsills.

Preferably, longitudinal ribs are provided in the door sill, wherein the number of the longitudinal ribs on the outer side is greater than the number of the longitudinal ribs on the inner side in the door sill.

As a preferred scheme, the battery pack comprises a battery frame, two sides and the bottom surface of the battery frame are respectively provided with a rib distribution cavity, and a plurality of frame reinforcing ribs are arranged in the rib distribution cavities at intervals.

Preferably, the battery pack includes an upper cover that leaks between the two sills to form a vehicle body floor.

As a preferable scheme, the longitudinal beam is connected with a front shock absorber, and a bending deformation opening is formed between the rear end of the longitudinal beam and the front shock absorber.

An automobile comprises the lower automobile body with high safety.

Compared with the prior art, the lower vehicle body with high safety and the vehicle with the lower vehicle body have the beneficial effects that: the front cabin arrangement space is formed by enclosing the anti-collision cross beam, the two longitudinal beams and the cross beam, the anti-collision cross beam is connected with the front ends of the longitudinal beams through the main energy absorption boxes, and when an automobile encounters a front collision, the energy generated by the front collision can be absorbed to a certain extent. The main energy-absorbing box is widened outside the main energy-absorbing box and is connected with the front cabin side beam, so that the main energy-absorbing box can be overlapped with the collision barrier by a certain amount in small offset collision of the vehicle, more efficient energy absorption and lateral vehicle offset can be generated in the small offset collision process, and the small offset collision safety performance of the vehicle is improved.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a top view of the overall structure of an embodiment of the present utility model.

Fig. 3 is a schematic view of the overall structure of a frame according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of the left, middle and lower force transfer paths of an embodiment of the utility model.

Fig. 5 is a schematic diagram of the force transmission path in an embodiment of the utility model.

Fig. 6 is a schematic structural view of a threshold according to an embodiment of the present utility model.

Fig. 7 is a schematic diagram of the structure of fig. 6A-A according to an embodiment of the present utility model.

Fig. 8 is a schematic view showing a connection structure of a hinge pillar, a threshold and a side member according to an embodiment of the present utility model.

In the figure:

10. a frame; 11. an anti-collision cross beam; 12. a longitudinal beam; 13. a battery connection part; 14. front cabin side beams; 15. a main energy absorption box; 16. a hinge post; 17. a frame cross member; 18. a floor cross beam; 19. a middle channel; 20. a front shock absorber; 21. bending the deformation opening;

30. a left force transfer path; 31. a medium force transmission path; 32. a lower force transfer path;

40. a threshold; 41. transverse ribs; 42. longitudinal ribs;

50. a battery pack; 51. a battery frame; 52. a rib distribution cavity; 53. frame reinforcing ribs; 54. and (5) an upper cover.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "connected," "fixed," and the like are used in the present utility model in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; the mechanical connection can be realized, and the welding connection can be realized; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 8, a lower vehicle body with high safety in a preferred embodiment of the present utility model includes a vehicle frame 10, wherein the vehicle frame 10 is provided with an anti-collision cross beam 11, two longitudinal beams 12 and a front cabin side beam 14, main energy-absorbing boxes 15 are respectively connected between the front ends of the two longitudinal beams 12 and the anti-collision cross beam 11, the rear ends of the two longitudinal beams 12 are respectively connected with hinge columns 16, the main energy-absorbing boxes 15 extend outwards to be connected with the front ends of the front cabin side beam 14, and the rear ends of the front cabin side beam 14 are connected with the hinge columns 16.

An automobile comprises a lower automobile body with high safety.

According to the lower vehicle body with high safety and the automobile, the anti-collision cross beam 11, the two longitudinal beams 12 and the cross beam are enclosed to form a front cabin arrangement space, the anti-collision cross beam 11 is connected with the front ends of the longitudinal beams 12 through the main energy absorption boxes 15, and when the automobile encounters a frontal collision, the energy generated by the frontal collision can be absorbed to a certain extent. The main energy-absorbing box 15 is widened on the outer side and is connected with the front cabin side beam 14, so that the main energy-absorbing box 15 can be overlapped with the collision barrier by a certain amount in small offset collision of the vehicle, more efficient energy absorption and lateral vehicle offset can be generated in the small offset collision process, and the small offset collision safety performance of the vehicle is improved.

Further, as shown in fig. 3 to 4, the two sides of the frame 10 are respectively provided with a threshold 40, the rear ends of the longitudinal beams 12 are connected with the threshold 40 on the same side, the longitudinal beams 12, the hinge columns 16 on the same side are connected with the threshold 40 to form a left force transmission path 30, and the root parts of the longitudinal beams 12 directly extend and overlap the threshold 40 and the hinge columns 16, so that force transmission is more direct and efficient.

As one example, the lower end of the hinge pillar 16 is connected to the front end of the rocker 40.

Further, as shown in fig. 3 to 4, the frame 10 is provided with a frame 10 beam and a floor beam 18, both ends of the floor beam 18 are respectively connected with side sills 40 on both sides, the two side sills 12 are connected through the frame 10 beam, the floor beam 18 is connected with a middle channel 19, the front end of the middle channel 19 extends forward to be connected with the frame 10 beam, and the side sills 12, the frame 10 beam, the middle channel 19 and the floor beam 18 are connected to form a middle force transmission path 31. The root parts of the two longitudinal beams 12 are directly connected with two ends of a cross beam of the frame 10, the rear end of the middle channel 19 is directly overlapped with the floor cross beam 18, the front end of the middle channel 19 climbs upwards and is overlapped with the cross beam of the frame 10, the middle channel 19 directly supports the cross beam of the frame 10, the cross beam of the frame 10 moves backwards in collision is prevented, and the passenger cabin is maintained stable.

As one example, the rear portions of the two side members 12 are connected by the cross member of the frame 10.

Further, as shown in fig. 3 to 5, the frame 10 is connected with a battery pack 50, the rear end of the side member 12 extends downward to form a battery connecting portion 13, the battery connecting portion 13 is connected with the battery pack 50, and the side member 12 and the battery pack 50 are connected to form a lower force transmission path 32. The cavity at the root of the longitudinal beam 12 expands towards the vehicle bottom, the longitudinal beam 12 is connected with the battery pack 50 through bolts, the root of the longitudinal beam 12 is supported by the structure of the battery pack 50, and the root of the longitudinal beam 12 and the passenger cabin are maintained to be stable in structure in the collision process.

As an example, as shown in fig. 4 to 5, the rear end of the side member 12 extends downward to the vehicle body to form a battery connection cavity, the battery connection portion 13 is located at the edge of the battery connection cavity, the battery pack 50 is located at least partially in the battery connection cavity, and the battery connection portion 13 is connected to the battery pack 50 by bolts.

Further, as shown in fig. 6 to 7, the battery pack 50 is located at the lower portion between the two sills 40, and the lateral ribs 41 are provided in the sills 40, wherein the number of the upper lateral ribs 41 is greater than the number of the lower lateral ribs 41 in the sills 40. The left and right door sills 40 are aluminum alloy extruded parts, the arrangement of ribs inside the cavity of the door sills 40 is generally strong and weak, and the upper strong and weak and the lower weak refer to that the arrangement of the transverse ribs 41 inside the cavity of the door sills 40 is dense and sparse. The cells are typically offset from the lower and inner sides of the beam section of the threshold 40, as seen from the cell placement. The number of the transverse ribs 41 arranged at the upper part in the threshold 40 is larger than the number of the transverse ribs 41 arranged at the lower part of the threshold 40, so that the lateral collision force is transmitted from the threshold 40 to the cross beam between the threshold 40 more, the number of the transverse ribs 41 arranged at the lower part of the threshold 40 is smaller than the number of the transverse ribs 41 arranged at the upper part of the threshold 40, even if a part of collision force is transmitted from the lower part of the section of the threshold 40 to the frame of the battery pack 50, the relatively weak structure can be fully collapsed, the load transmission is reduced, meanwhile, the material accumulation on the side face of the frame of the battery pack 50 is less, and the extrusion to the frame of the battery pack 50 is further lightened.

As one example, the length and width of the transverse ribs 41 are respectively corresponding to the threshold 40, so as to improve the overall protection of the battery pack 50.

Further, as shown in fig. 6 to 7, the longitudinal ribs 42 are provided in the door sill 40, wherein in the door sill 40, the number of the outer longitudinal ribs 42 is greater than the number of the inner longitudinal ribs 42, so that the supporting strength of the door sill 40 is characterized by being strong on the outer side and weak on the inner side. The outer side is strong and the inner side is weak, and the arrangement of the longitudinal ribs 42 in the cavity of the threshold 40 is dense on the outer side and sparse on the inner side. The number of the outer longitudinal ribs 42 is greater than the number of the inner longitudinal ribs 42, that is, the outer longitudinal ribs are strong, so that the crush force of the outer portion of the beam section of the rocker 40 can be increased as much as possible in the early stage of the side collision, and the large crush force can absorb more collision energy in the same crush space. The number of the inner longitudinal ribs 42 is smaller than the number of the outer longitudinal ribs 42, that is, the inner longitudinal ribs are weak, so that on one hand, in the later stage of a side collision, collision force can be reduced to be directly transmitted to the frame of the battery pack 50, and on the other hand, the relatively sparse longitudinal ribs 42 can also reduce extrusion of material accumulation to the frame of the battery pack 50. The lower part of the cross section of the rocker 40, seen in the transverse force transmission path of the entire rocker 40, is able to release more space, allowing the upper part of the cross section of the rocker 40 to continue more to transmit load and absorb crash energy.

As one example, the length and height of the longitudinal ribs 42 are respectively corresponding to the threshold 40, so as to improve the overall protection of the battery pack 50.

Further, as shown in fig. 7, the battery pack 50 includes a battery frame 51, two sides and bottom of the battery frame 51 are respectively provided with a rib distribution cavity 52, and a plurality of frame reinforcing ribs 53 are arranged in the rib distribution cavity 52 at intervals. The battery 50 comprises a battery core, the battery core is placed in a battery frame 51, and the battery frame 51 protects the battery core. The frame of the battery pack 50 is also an aluminum alloy extrusion piece, and the frame reinforcing ribs 53 in the battery frame 51 are arranged, so that the section of the battery pack can be efficiently collapsed and absorb energy when in side collision under the condition of meeting the self structural strength of the battery pack 50, and the extrusion of the frame to an internal battery cell is reduced.

As one example, the frame reinforcing ribs 53 on both sides of the rib distribution chamber 52 extend in the lateral direction and are arranged at intervals in the vertical direction. The frame reinforcing ribs 53 at the bottom of the battery frame 51 extend in the vertical direction and are arranged at intervals in the lateral direction.

Further, as shown in fig. 6 to 7, the battery pack 50 includes an upper cover 54, and the upper cover 54 leaks between the two side sills 40 to form a vehicle body floor. The body floor of the frame 10 is eliminated. When the battery pack 50 is assembled with the vehicle body, the upper cover 54 of the battery pack 50 can become the vehicle body floor, the arrangement space between the upper cover 54 of the battery pack 50 and the vehicle body floor is fully utilized, and the arrangement height of the battery cells is increased, so that the electric quantity of the battery pack 50 and the driving range of the vehicle can be improved.

Further, as shown in fig. 8, the side member 12 is connected to a front damper 20, and a bending deformation opening 21 is provided between the rear end of the side member 12 and the front damper 20. At the overlap joint of the front shock absorber 20 seat and the longitudinal beam 12, there is a hollow design, namely a bending deformation opening 21. The bending deformation opening 21 can effectively reduce the collision acceleration of the front full-width collision and improve the collision safety of passengers in the vehicle. Because the bending deformation opening 21 allows the side member 12 to bend and deform at the bending deformation opening 21 during a full-width frontal collision of the vehicle, the dynamic crushing space of the collision is increased.

In summary, the embodiment of the utility model provides a lower vehicle body with high safety and a vehicle with the lower vehicle body, an anti-collision cross beam 11, two longitudinal beams 12 and cross beams are enclosed to form a front cabin arrangement space, the anti-collision cross beam 11 is connected with the front ends of the longitudinal beams 12 through a main energy absorption box 15, and when the vehicle encounters a frontal collision, the energy generated by the frontal collision can be absorbed to a certain extent. The main energy-absorbing box 15 is widened on the outer side and is connected with the front cabin side beam 14, so that the main energy-absorbing box 15 can be overlapped with the collision barrier by a certain amount in small offset collision of the vehicle, more efficient energy absorption and lateral vehicle offset can be generated in the small offset collision process, and the small offset collision safety performance of the vehicle is improved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. The utility model provides a lower automobile body that security is high which characterized in that: the anti-collision device comprises a frame, wherein the frame is provided with an anti-collision cross beam, two longitudinal beams and a front cabin side beam, main energy absorption boxes are respectively connected between the front ends of the two longitudinal beams and the anti-collision cross beam, the rear ends of the two longitudinal beams are respectively connected with hinge posts, the main energy absorption boxes extend outwards and are connected with the front ends of the front cabin side beam, and the rear ends of the front cabin side beam are connected with the hinge posts;

the rear ends of the longitudinal beams are connected with the doorsills positioned on the same side, and the longitudinal beams positioned on the same side, the hinge columns and the doorsills are connected to form a left force transmission path;

the frame is provided with a frame beam and a floor beam, two ends of the floor beam are respectively connected with the doorsills on two sides, the two longitudinal beams are connected through the frame beam, the floor beam is connected with a middle passage, the front end of the middle passage extends forwards to be connected with the frame beam, and the longitudinal beams, the frame beam, the middle passage and the floor beam are connected to form a middle force transmission path.

2. The high safety lower vehicle body according to claim 1, wherein: the frame is connected with a battery pack, the rear end of the longitudinal beam downwards extends to form a battery connecting part, the battery connecting part is connected with the battery pack, and the longitudinal beam is connected with the battery pack to form a lower force transmission path.

3. The high safety lower vehicle body according to claim 2, wherein: the battery pack is located at the lower part between the two doorsills, and transverse ribs are arranged in the doorsills, wherein the arrangement number of the transverse ribs at the upper part is larger than that of the transverse ribs at the lower part in the doorsills.

4. A lower car body with high safety according to claim 3, characterized in that: longitudinal ribs are arranged in the threshold, wherein the arrangement number of the longitudinal ribs on the outer side is larger than that of the longitudinal ribs on the inner side in the threshold.

5. The high safety lower vehicle body according to claim 2, wherein: the battery pack comprises a battery frame, two sides and the bottom surface of the battery frame are respectively provided with a rib distribution cavity, and a plurality of frame reinforcing ribs are arranged in the rib distribution cavities at intervals.

6. The high safety lower vehicle body according to claim 2, wherein: the battery pack comprises an upper cover, and the upper cover leaks between the two doorsills to form a vehicle body floor.

7. The high safety lower vehicle body according to claim 1, wherein: the longitudinal beam is connected with a front shock absorber, and a bending deformation opening is formed between the rear end of the longitudinal beam and the front shock absorber.

8. An automobile, characterized in that: a lower car body comprising the high-safety lower car body according to any one of claims 1 to 7.