The present disclosure relates to a vehicle front compartment structure and a vehicle.
In the related art, compared with a front compartment structure of a conventional vehicle, a front compartment structure of a pure electric vehicle has two prominent problems in terms of safety. First, the pure electric vehicle is more afraid of a small-angle collision, for example, a 25% small-offset collision, because both an occupant and a battery module need to be protected after the collision. Longitudinal beams of a front compartment of the conventional vehicle are usually arranged as two parallel beam structures that extend in an X direction, and there is a large spacing between the two parallel beam structures. However, the pure electric vehicle usually uses a low profile tire because of a modeling trend. In this case, a spacing between root regions of the longitudinal beams is narrowed. This greatly impacts backward force transmission (to door sills and A-pillars of the vehicle) of the longitudinal beams. In addition, a rear end of an energy-absorbing box is directly connected to the longitudinal beam, an outer side of the longitudinal beam is vacant without additional force transmission structural member, and an upper side beam is lap-jointed behind a front vacant region of the longitudinal beam.
Second, the front compartment structure of the pure electric vehicle lacks natural physical defense. A conventional fuel vehicle usually uses a front-engine and front-wheel-drive design. When the conventional fuel vehicle encounters a frontal load, an engine, a water tank, a powertrain suspension structure, and the like that are arranged inside the front compartment may be used for resisting, to absorb some collision energy in a critical moment. However, an existing pure electric vehicle usually uses a rear-wheel-drive design in which there is a large empty space inside a front compartment, and tends to use a front storage compartment design. This structure loses natural physical defense compared with the conventional vehicle.
Embodiments of the present disclosure provide improved technical solutions of a vehicle front compartment structure and a vehicle.
According to a first aspect of the present disclosure, a vehicle front compartment structure is provided, which includes: a front anti-collision beam; a front longitudinal beam; an upper side beam; and an energy-absorbing box, a side of the energy-absorbing box being connected to the front anti-collision beam, and the front longitudinal beam and the upper side beam being separately connected to another side of the energy-absorbing box; a first force transmission structure being formed through the front anti-collision beam, the energy-absorbing box, and the upper side beam; and a second force transmission structure being formed through the front anti-collision beam, the energy-absorbing box, and the front longitudinal beam.
According to a second aspect of the present disclosure, a vehicle is provided, which includes the vehicle front compartment structure according to the foregoing embodiment.
Other features and advantages of the present disclosure will become apparent from the following detailed description of example embodiments of the present disclosure with reference to the accompanying drawings.
The accompanying drawings are incorporated into this specification and constitute a part of this specification, show embodiments of the present disclosure, and are used together with description thereof to describe the principle of the present disclosure.
Various example embodiments of the present disclosure are now described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specified, opposite arrangements, numerical expressions, and numerical values of components and steps described in the disclosure do not limit the scope of the present disclosure.
The following description of at least one example embodiment is merely illustrative, and in no way constitute any limitation on the present disclosure and application or use thereof.
In examples shown and discussed herein, any specific value should be construed as merely an example and not as a limitation.
It should be noted that: similar reference numerals and letters represent similar items in the accompanying drawings below. Therefore, once an item is defined in one accompanying drawing, the item does not need to be further discussed in subsequent accompanying drawings.
The following specifically describes, with reference to the accompanying drawings, a vehicle front compartment structure 100 according to an embodiment of the present disclosure.
As shown in
Specifically, a side of the energy-absorbing box 40 is connected to the front anti-collision beam 10, and each front longitudinal beam 20 and each upper side beam 30 are separately connected to another side of the energy-absorbing box 40. A first force transmission structure is formed through the front anti-collision beam 10, the energy-absorbing box 40, and the upper side beam 30. A second force transmission structure is formed through the front anti-collision beam 10, the energy-absorbing box 40, and the front longitudinal beam 20.
In other words, refer to
As shown in
In the following embodiments of the present disclosure, the Y direction may be understood as a width direction of the vehicle or a length direction of a first connecting rod 52, an X direction may be understood as a length direction of the front longitudinal beam 20 or a length direction of the vehicle, and a Z direction may be understood as a height direction of the vehicle. The first force transmission path of the present disclosure can effectively cope with the small-offset collision and ensure collision force transmission during the collision. The second force transmission path can serve as a main force transmission path, to undertake collision force transmission of the vehicle during the frontal collision and the small-offset collision.
Therefore, in the vehicle front compartment structure 100 according to this embodiment of the present disclosure, the width of the energy-absorbing box 40 is increased, and both the upper side beam 30 and the front longitudinal beam 20 are connected to the energy-absorbing box 40, to enlarge the overlap area between the energy-absorbing box 40 on the front anti-collision beam 10 and the collision barrier, so that the first force transmission structure that has the top force transmission path and the second force transmission structure that has the bottom force transmission path are formed while the energy-absorbing box 40 absorbs collision energy. Therefore, the collision force is dispersedly transmitted, the requirements of the vehicle during the collisions such as the frontal collision and the small-offset collision are met, the collision resistance of the vehicle is improved, and vehicle safety is improved.
According to an embodiment of the present disclosure, in a first direction, widths of cross sections of ends that are of the front longitudinal beam 20 and the upper side beam 30 and that face the front anti-collision beam 10 are less than or equal to a width of a cross section of the energy-absorbing box 40; and a bottom surface of the end that is of the upper side beam 30 and that faces the front anti-collision beam 10 is flush with a bottom surface of the energy-absorbing box 40.
That is, as shown in
In the present disclosure, the upper side beam 30 extends toward the A-pillar, and the upper side beam 30 is connected to the A-pillar, to form the force transmission channel between the upper side beam 30 and the A-pillar 72, so that an impact force is transmitted to the A-pillar 72 through the first force transmission structure. Therefore, the collision resistance of the vehicle is improved, and vehicle safety is improved.
According to an embodiment of the present disclosure, the upper side beam 30 includes: a support plate 51, where the support plate 51 is arranged on a side that is of the front longitudinal beam 20 and that faces the upper side beam 30, and the support plate 51 is arranged between the energy-absorbing box 40 and the upper side beam 30, to transmit the impact force to the upper side beam 30.
In other words, refer to
According to an embodiment of the present disclosure, the upper side beam 30 further includes: a first beam body 31 and a second beam body 32, where the first beam body 31 is arranged above the second beam body 32, the first beam body 31 and the second beam body 32 fit with each other to define an energy-absorbing cavity, and the second beam body 32 is connected to the energy-absorbing box 40 through the support plate 51.
That is, as shown in
In some specific implementations of the present disclosure, the vehicle front compartment structure 100 further includes: a wheel housing 60, the wheel housing 60 being separately connected to the front longitudinal beam 20 and the upper side beam 30, the wheel housing 60 being located between the front longitudinal beam 20 and the upper side beam 30, and the first force transmission structure being formed through the front anti-collision beam 10, the energy-absorbing box 40, the upper side beam 30, and the wheel housing 60, to transmit the impact force to the A-pillar 72. Each wheel housing 60 is provided with a first flange 61 and a second flange 62, the first flange 61 is connected to the front longitudinal beam 20, and the second flange 62 is connected to the second beam body 32. A shock absorption cavity 63 is defined between the first flange 61 and the front longitudinal beam 20, and a shock absorption cavity 63 is defined between the second flange 62 and the upper side beam 30.
In other words, as shown in
The first force transmission structure is formed through the front anti-collision beam 10, the energy-absorbing box 40, the upper side beam 30, and the wheel housing 60. An upper section (the first beam body 31) of the upper side beam 30 covers the support plate 51 and the lower section (the second beam body 32) of the upper side beam 30 in the Z direction (the height direction of the vehicle), and forms a cavity together with the support plate 51, the second beam body 32, and the wheel housing 60, and the cavity serves as a small-offset collision force transmission path, to transmit, to the A-pillar 72, the collision force transmitted from the front anti-collision beam 10.
Optionally, refer to
In some specific implementations of the present disclosure, two front longitudinal beams 20 extend in a direction toward the front anti-collision beam 10, and a width distance between the two front longitudinal beams 20 gradually increases to form a splayed structure. The vehicle front compartment structure 100 further includes: a first connecting rod 52 and a second connecting rod 53, the first connecting rod 52 being arranged between the two front longitudinal beams 20, the second connecting rod 53 being arranged between the two wheel housings 60, the first connecting rod 52 being close to the front anti-collision beam 10 relative to the second connecting rod 53, the first connecting rod 52, the two front longitudinal beams 20, and the second connecting rod 53 enclosing a first closed loop, and the second connecting rod 53, the two front longitudinal beams 20, and a cowl panel 71 enclosing a second closed loop. The vehicle front compartment structure 100 further includes: a third connecting rod 54, the third connecting rod 54 being separately connected to the front longitudinal beam 20 and the cowl panel 71, and the second connecting rod 53, the two wheel housings 60, and the third connecting rod 54 enclosing the second closed loop.
That is, refer to
In a conventional structure, the front sections of the two front longitudinal beams 20 are arranged in parallel. In an arrangement manner of the front longitudinal beams 20 in the related art, the front anti-collision beam 10 connected to the front section of the front longitudinal beam 20 absorbs energy at a boundary line of a small-offset collision barrier, and the energy-absorbing box 40 is directly opposite to a rounded corner of the barrier. In the new structure of the present disclosure, the tail parts of the two front longitudinal beams 20 need to avoid the tires 74, and the front end of each front longitudinal beam 20 is 3° to 5° outward relative to the tail part to form the splayed structure (shown as dashed lines in
As shown in
The vehicle front compartment structure 100 further includes the third connecting rod 54. The third connecting rod 54 is arranged at the end that is of the front longitudinal beam 20 and that is far away from the front anti-collision beam 10. The third connecting rod 54 is connected to the cowl panel 71. A shape of the third connecting rod 54 corresponds to a curved shape of the cowl panel 71. Two ends of the third connecting rod 54 are respectively lap-jointed with the two wheel housings 60, and a middle section of the third connecting rod 54 is lap-jointed with the cowl panel 71. The second connecting rod 53, the two wheel housings 60, and the third connecting rod 54 enclose the second closed loop. The design in which the wheel housing 60 obtained through aluminum casting is straddled on the front longitudinal beam 20 and there are two closed loops is conducive to improving dynamic stiffness of an installation point of a front shock absorber and dynamic stiffness of a vehicle body, and improving vehicle handling.
In a vehicle collision force transmission process of the present disclosure, as shown in
In the present disclosure, the force transmission paths of the front compartment of the vehicle are redesigned, to add a force transmission path to the pure electric vehicle for an offset collision, and a key structure on the path is designed and optimized in detail. In addition, a trend and a span of the front longitudinal beam 20 are rearranged, and an associated structure and a connection relationship between the energy-absorbing box 40 on the front anti-collision beam 10 and the upper side beam 30 are optimized. Based on this, related structures such as the upper side beam 30, the wheel housing 60, the first connecting rod 52, the second connecting rod 53, and the third connecting rod 54 are optimized and designed to improve the collision resistance of the front anti-collision beam 10. In addition, structures such as the upper side beam 30 and the front longitudinal beam 20 fit with each other to form a cavity with a closed cross section, to form two closed loops and two force transmission paths. Therefore, transmission, decomposition, and resistant capabilities for the impact force are improved, structural stiffness during shock absorber installation is improved, driving quality of the vehicle is improved, the vehicle is actively guided to slide to a Y-direction side during the collision, and vehicle and occupant safety is ensured.
In the present disclosure, there is no specific limitation on materials, cross-sectional shapes, connection manners, and the like of the structures such as the front longitudinal beam 20, the upper side beam 30, the first connecting rod 52, the second connecting rod 53, the third connecting rod 54, and the wheel housing 60 in the vehicle front compartment structure 100, and any design that can meet collision requirements of the present disclosure shall fall within the protection scope of the present disclosure.
Certainly, another structure and another operation principle in the vehicle front compartment structure 100 can be understood and implemented by a person skilled in the art. Details are not described in detail in the present disclosure.
In conclusion, in the vehicle front compartment structure 100 according to this embodiment of the present disclosure, the width of the energy-absorbing box 40 is increased, and both the upper side beam 30 and the front longitudinal beam 20 are connected to the energy-absorbing box 40, to enlarge the overlap area between the energy-absorbing box 40 on the front anti-collision beam 10 and the collision barrier, so that the first force transmission structure that has the top force transmission path and the second force transmission structure that has the bottom force transmission path are formed while the energy-absorbing box 40 absorbs collision energy. Therefore, the collision force is dispersedly transmitted, the requirements of the vehicle during the collisions such as the frontal collision and the small-offset collision are met, the collision resistance of the vehicle is improved, and vehicle safety is improved.
An embodiment of the present disclosure further provides a vehicle, which includes the vehicle front compartment structure 100 in the foregoing embodiment. The vehicle in the present disclosure may be an electric vehicle, a fuel vehicle, or another type of hybrid vehicle. Because the vehicle front compartment structure 100 according to the embodiments of the present disclosure has the foregoing technical effects, the vehicle according to the embodiments of the present disclosure should also have the corresponding technical effects. To be specific, the vehicle in the present disclosure uses the vehicle front compartment structure 100, to enlarge the overlap area between the energy-absorbing box 40 on the front anti-collision beam 10 and the collision barrier, so that the first force transmission structure that has the top force transmission path and the second force transmission structure that has the bottom force transmission path are formed while the energy-absorbing box 40 absorbs collision energy. Therefore, the collision force is dispersedly transmitted, the requirements of the vehicle during the collisions such as the frontal collision and the small-offset collision are met, the collision resistance of the vehicle is improved, and vehicle safety is improved.
Although some specific embodiments of the present disclosure have been described in detail by way of examples, a person skilled in the art should understand that the foregoing examples are only for description and are not intended to limit the scope of the present disclosure. A person skilled in the art should understand that modifications may be made to the foregoing embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is limited by the appended claims.
Number | Date | Country | Kind |
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202111676082.8 | Dec 2021 | CN | national |
The present application is a continuation application of PCT application No. PCT/CN2022/142834, filed on Dec. 28, 2022, which claims priority to Chinese Patent Application No. 202111676082.8, filed on Dec. 31, 2021, and entitled “VEHICLE FRONT COMPARTMENT STRUCTURE AND VEHICLE”. The entire content of all of the above-referenced applications is incorporated herein by reference.
Number | Date | Country | |
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Parent | PCT/CN2022/142834 | Dec 2022 | WO |
Child | 18622939 | US |