Passenger compartment reinforcing structure based on small offset collision safety and automobile
By adding a closed cavity structure made of high-strength material to the passenger compartment area of the front of the car, the problem of lower limb injury to passengers under small offset collisions is solved, and the safety protection of the passenger compartment is achieved.
Patent Information
- Application Number
- CN202423118635.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Under the 25% small offset crash test condition, the vehicle chassis wheels are subjected to severe compression and deflection, causing deformation of the vehicle body structural components in the lower limb area of the occupants, which fails to effectively protect the safety of passengers.
A reinforced structure is added to the passenger compartment area of the front of the car, including components such as the hinge pillar inner panel, front floor, front longitudinal beam of the floor, and short crossbeam of the front floor. High-strength materials such as hot-formed steel and ultra-high-strength steel are used to form a closed cavity to distribute the impact force.
It improves the overall strength of the passenger compartment structure, effectively protects the lower limbs of passengers during a collision, and enhances the safety performance of the vehicle.
Smart Images
Figure CN223835692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive reinforcement structures, and more specifically, to a passenger compartment reinforcement structure and an automobile based on small offset collision safety. Background Technology
[0002] With the emergence of various complex traffic accident scenarios, automotive safety regulations and standards are being updated more frequently, and the corresponding collision safety evaluation (such as small offset crash test) conditions are becoming increasingly stringent.
[0003] The primary purpose of the small overlap frontal crash test is to evaluate a vehicle's safety performance under extreme collision conditions. Because the small overlap frontal crash simulates a collision between a vehicle and an indeformable object, this test places higher demands on the design of the vehicle's passenger compartment protection, body structure, and airbags. Through this test, a better understanding of a vehicle's performance in specific collision scenarios can be obtained, thus helping consumers make safer decisions when choosing a vehicle. The 25% small overlap frontal crash test is the most stringent of these tests.
[0004] Under the 25% small offset crash test condition, the wheels of the existing vehicle chassis will be subjected to severe compression and deflection, thus impacting the passenger compartment. The body structure corresponding to the lower limb area of the passenger will be deformed by the impact, resulting in injury to the lower limbs of the passenger and failing to adequately protect the safety of the passenger. Utility Model Content
[0005] The purpose of this invention is to provide a passenger compartment reinforcement structure and automobile based on small offset collision safety, which can effectively increase the structural strength of automobile parts corresponding to the lower limb area of the passenger, fully protect the safety of passengers when the automobile is in a collision, and improve the safety performance of the automobile.
[0006] The embodiments of this utility model are implemented as follows:
[0007] In a first aspect, an embodiment of this application provides a passenger compartment reinforcement structure based on small offset collision safety, applied to the front compartment of a vehicle. The vehicle includes two front wheel assemblies symmetrically arranged on the left and right sides. The reinforcement structure is provided at least twice, corresponding to the two front wheel assemblies respectively. Each reinforcement structure includes a hinge pillar inner plate, a front floor, a front floor longitudinal beam, and a front floor short crossbeam. The hinge pillar inner plate is vertically arranged and located inside the corresponding front wheel assembly. The front floor is horizontally arranged and one side of it is connected to the bottom of the inner side of the hinge pillar inner plate. The front floor longitudinal beam is located on the top of the front floor away from the hinge pillar inner plate, and both ends of the front floor longitudinal beam extend in the front-rear direction. The front floor short crossbeam is located on the top of the front floor and both ends of it extend in the left-right direction. Both ends of the front floor short crossbeam are also connected to the hinge pillar inner plate and the front floor longitudinal beam respectively.
[0008] In a possible implementation, each of the reinforcing structures further includes a front baffle and a front floor support beam. The front baffle is vertically arranged and one side of it is connected to the inner side of the hinge column inner plate. The bottom end of the front baffle is connected to the top surface of the front floor. The two ends of the front floor support beam extend in the left-right direction and are disposed on the top surface of the front floor. One side of the front floor support beam is connected to the front baffle, and one end of the front floor support beam is also connected to the inner side of the bottom of the hinge column inner plate.
[0009] In a possible implementation, each of the reinforcing structures further includes a front baffle beam, with both ends of each front baffle beam extending in a left-right direction, and each front baffle mounted on the corresponding front baffle beam.
[0010] In a possible implementation, each reinforcing structure further includes a front longitudinal beam, with both ends of each front longitudinal beam extending in the front-rear direction and connected to the corresponding front baffle beam.
[0011] In a possible implementation, each of the front wheel assemblies includes a wheel, a lower front control arm, and a lower rear control arm; each of the hinge pillar inner plates is located inside the corresponding wheel; and the two ends of the lower front control arm and the lower rear control arm are respectively connected to the corresponding wheel and the front fender crossbeam.
[0012] In a possible implementation, each of the front baffle beams is made of hot-formed steel.
[0013] In a possible implementation, each of the reinforcing structures further includes a diagonal brace, each of the diagonal braces being located above the corresponding front baffle and connected to the inner side of the corresponding hinge column inner plate.
[0014] In a possible implementation, each of the front baffles and the diagonal bracing beams is made of ultra-high strength steel.
[0015] Secondly, an automobile according to an embodiment of this application includes two front wheel assemblies symmetrically arranged on the left and right sides and a reinforcing structure of any of the above embodiments; at least one of the reinforcing structures is provided at each of the front wheel assemblies.
[0016] In possible implementations, the vehicle is an electric vehicle, a gasoline-powered vehicle, or a range-extended vehicle.
[0017] The beneficial effects of this utility model embodiment are as follows: The front vehicle compartment can be divided into a driver's compartment and a passenger compartment. Each compartment has at least one reinforcing structure to strengthen the corresponding structure of the passenger's feet, thereby fully protecting the safety of the driver and passenger in the event of a collision. Taking the reinforcing structure in the passenger compartment as an example, the hinge pillar inner plate is vertically installed inside the corresponding front wheel assembly, and the front floor is horizontally positioned as a footrest for the passenger. The two ends of the front longitudinal beam of the floor extend in the front-rear direction, and the front floor short crossbeam is installed on the top surface of the front floor with its two ends extending in the left-right direction. The two ends of the front floor short crossbeam are also connected to the corresponding hinge pillar inner plate and the front longitudinal beam of the floor. The front floor short crossbeam, together with the front floor, hinge pillar inner plate, and front longitudinal beam of the floor, forms a first closed cavity, thereby enhancing the regional strength of this area, effectively distributing the impact force in the later stages of the collision, protecting the structural integrity of the passenger compartment, and thus improving the safety of the lower limbs of the occupants in a collision. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is an isometric view of a passenger compartment reinforcement structure based on small offset collision safety according to an embodiment of the present invention;
[0020] Figure 2 This is a top view of a passenger compartment reinforcement structure based on small offset collision safety according to an embodiment of the present invention;
[0021] Figure 3 This is a bottom view of a passenger compartment reinforcement structure based on small offset collision safety according to an embodiment of the present invention;
[0022] Figure 4 This is a rear view of a passenger compartment reinforcement structure based on small offset collision safety according to an embodiment of the present invention.
[0023] Icons: 1. Front longitudinal beam; 2. Front wheel assembly; 3. Front fender crossbeam; 4. Front floor support beam; 5. Front floor short crossbeam; 6. Front fender; 7. Diagonal brace beam; 8. Hinge pillar inner plate; 9. Front floor; 10. Floor front longitudinal beam; 11. Lower front control arm; 12. Lower rear control arm; 13. First enclosed cavity; 14. Second enclosed cavity. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] In the 25% small offset crash test under the China Insurance Automotive Safety Index (C-IASI) and the US Institute for Highway Safety (IIHS) crash regulations, the front longitudinal beam 1, due to its position, is unable to distribute the impact force under this crash condition. After the front wheel assembly 2 is subjected to a strong impact, it is squeezed backward, dragging the lower front control arm 11 and the lower rear control arm 12. When the drag force reaches a certain level, it will cause the lower front control arm 11 and the lower rear control arm 12 to break and fail. At this time, the wheel will deflect and thus impact the front fender beam 3, the front fender 6, the diagonal brace beam 7, the hinge pillar inner plate 8, and the front floor 9, causing the passenger compartment structure corresponding to the lower limb area of the occupant to be crushed and deformed, resulting in injury to the occupant.
[0031] Based on the above, this application upgrades the material of the front baffle beam 3 to hot-formed steel, and the materials of the front baffle 6 and diagonal brace beam 7 to ultra-high-strength steel. It also increases the strength of the enclosed cavity area formed by the front floor support beam 4, the front baffle 6, the hinge pillar inner plate 8, and the front floor 9. Simultaneously, it increases the strength of the enclosed cavity area formed by the front floor short crossbeam 5, the hinge pillar inner plate 8, the front floor 9, and the floor front longitudinal beam 10. By increasing material strength and adding two cavity structures in the occupant's foot area, the impact force in the later stages of a collision is effectively distributed, protecting the structural integrity of the occupant compartment and thus improving the safety of the occupant's lower limbs during a collision.
[0032] First Embodiment
[0033] like Figures 1 to 4 As shown in the figure, an embodiment of the present application discloses a passenger compartment reinforcement structure based on small offset collision safety, applied to the front compartment of a car. The car includes two front wheel assemblies 2 symmetrically arranged on the left and right sides. The reinforcement structure is provided at least twice and is respectively provided for the two front wheel assemblies 2. Each reinforcement structure includes a hinge pillar inner plate 8, a front floor 9, a front floor longitudinal beam 10, and a front floor short crossbeam 5. The hinge pillar inner plate 8 is vertically arranged and located inside the corresponding front wheel assembly 2. The front floor 9 is horizontally arranged and one side of it is connected to the bottom of the inner side of the hinge pillar inner plate 8. The front floor longitudinal beam 10 is located on the top side of the front floor 9 away from the hinge pillar inner plate 8, and both ends of the front floor longitudinal beam 10 extend in the front-rear direction. The front floor short crossbeam 5 is located on the top of the front floor 9 and both ends of it extend in the left-right direction. Both ends of the front floor short crossbeam 5 are also connected to the hinge pillar inner plate 8 and the front floor longitudinal beam 10, respectively.
[0034] In conjunction with the above embodiments, the front vehicle compartment can be divided into a driver's compartment and a passenger compartment. Each compartment has at least one reinforcing structure to strengthen the corresponding foot structure, thereby fully protecting the safety of the driver and passenger in the event of a collision. Taking the reinforcing structure in the passenger compartment as an example, the hinge pillar inner plate 8 is vertically positioned inside the corresponding front wheel assembly 2, the front floor 9 is horizontally positioned as a footrest for the passenger, the two ends of the floor front longitudinal beam 10 extend in the front-rear direction, and the front floor short crossbeam 5 is installed on the top surface of the front floor 9 with its two ends extending in the left-right direction. The two ends of the front floor short crossbeam 5 are also connected to the corresponding hinge pillar inner plate 8 and the floor front longitudinal beam 10. The front floor short crossbeam 5, together with the front floor 9, hinge pillar inner plate 8, and floor front longitudinal beam 10, forms a first closed cavity 11, thereby enhancing the regional strength, effectively distributing the impact force in the later stages of the collision, protecting the structural integrity of the passenger compartment, and thus improving the safety of the lower limbs of the occupants in a collision.
[0035] The passenger compartment reinforcement structure based on small offset collision safety in this application embodiment includes a front baffle 6 and a front floor support beam 4 at each reinforcement structure. The front baffle is vertically arranged and one side of it is connected to the inner side of the hinge column inner plate 8. The bottom end of the front baffle 6 is connected to the top surface of the front floor 9. The two ends of the front floor support beam 4 extend in the left and right direction and are arranged on the top surface of the front floor 9. One side of the front floor support beam 4 is connected to the front baffle 6, and one end of the front floor support beam 4 is also connected to the inner side of the bottom of the hinge column inner plate 8.
[0036] In conjunction with the above embodiments, the front floor support beam 4 forms a second closed cavity 12 with the front baffle 6, the hinge column inner plate 8 and the front floor 9, which further enhances the strength of this area, effectively distributes the impact force in the later stage of the collision, protects the structural integrity of the passenger compartment, and thus improves the safety protection of the lower limbs of the occupants in the collision.
[0037] The passenger compartment reinforcement structure based on small offset collision safety in this application embodiment includes a front baffle beam 3 at each reinforcement structure. Each front baffle beam 3 extends from both ends in the left-right direction, and each front baffle 6 is mounted on the corresponding front baffle beam 3. Each reinforcement structure also includes a front longitudinal beam 1, with both ends extending from both ends in the front-rear direction and the root of the front longitudinal beam 1 overlapping the front baffle beam 3.
[0038] The passenger compartment reinforcement structure based on small offset collision safety in this application embodiment includes a wheel, a lower front control arm 11 and a lower rear control arm 12 in each front wheel assembly; the inner plate 8 of each hinge pillar is located inside the corresponding wheel; the two ends of the lower front control arm 11 and the lower rear control arm 12 are respectively connected to the corresponding wheel and the front baffle beam 3.
[0039] In the above embodiment, after the front wheel assembly 2 is subjected to a strong impact, it is squeezed backward, simultaneously dragging the lower front control arm 11 and the lower rear control arm 12. When the dragging force reaches a certain level, the lower front control arm 11 and the lower rear control arm 12 will break and fail. At this time, the wheel will deflect, thereby impacting the front fender crossbeam 3, the front fender 6, the diagonal brace beam 7, the hinge pillar inner plate 8, and the front floor 9. This increases the strength of the enclosed cavity formed by the front floor support beam 4, the front fender 6, the hinge pillar inner plate 8, and the front floor 9, and also increases the strength of the enclosed cavity formed by the front floor short crossbeam 5, the hinge pillar inner plate 8, the front floor 9, and the floor front longitudinal beam 10. By increasing the material strength and adding two cavity structures in the occupant's foot area, the impact force in the later stages of the collision is effectively distributed, protecting the structural integrity of the occupant compartment, and thus improving the safety protection of the occupant's lower limbs in a collision.
[0040] The passenger compartment reinforcement structure based on small offset collision safety in this application embodiment includes a diagonal brace beam 7 in each reinforcement structure. Each diagonal brace beam 7 is located above the corresponding front baffle 6 and is connected to the inner side of the corresponding hinge pillar inner plate 8.
[0041] In conjunction with the above embodiments, the main function of the diagonal bracing beam 7 is to increase the stability and load-bearing capacity of the vehicle, ensuring driving safety under complex road conditions. It is installed in various key parts of the vehicle, such as the front and rear longitudinal beams, and the A, B, and C pillars. The front longitudinal beams, located at the front of the vehicle, absorb collision energy through crushing and bending deformation, protecting the passenger compartment. The A, B, and C pillars are located between the windshield and the front door, the front door and the rear door, and the rear door and the rear windshield, respectively, and they play a role in preventing structural deformation of the vehicle during a collision.
[0042] The passenger compartment reinforcement structure based on small offset collision safety in this application embodiment uses ultra-high strength steel for each front baffle 6 and diagonal brace beam 7, a type of alloy steel used to manufacture structural components that withstand high stress. Each front baffle crossbeam 3 is made of hot-formed steel with a yield strength of up to 1000 MPa, capable of withstanding pressures exceeding 10 tons per square centimeter. Using this material in the vehicle body increases the load-bearing capacity by 30% with almost no change in vehicle weight, bringing the vehicle's rigidity to a new level. The use of high-strength materials for the front baffle 6, diagonal brace beam 7, and front baffle crossbeam 3, along with the addition of two cavity structures in the occupant's foot area, effectively distributes the impact force in the later stages of a collision, protecting the structural integrity of the passenger compartment and thus improving the safety of the occupant's lower limbs during a collision.
[0043] Second Embodiment
[0044] Based on the same inventive concept, the implementation principle of a car in this application is the same as or similar to the passenger compartment reinforcement structure based on small offset collision safety in this application. The specific implementation of a car in this application can refer to the passenger compartment reinforcement structure based on small offset collision safety in any of the above embodiments, and the repeated parts will not be described again.
[0045] An automobile according to an embodiment of this application includes two front wheel assemblies 2 symmetrically arranged on the left and right sides and a reinforcing structure of any of the above embodiments; at least one reinforcing structure is provided at each front wheel assembly.
[0046] In conjunction with the above embodiments, the material of the front baffle beam 3 is upgraded to hot-formed steel, and the materials of the front baffle 6 and the diagonal brace beam 7 are upgraded to ultra-high-strength steel. This increases the strength of the enclosed cavity reinforcement area formed by the front floor support beam 4, the front baffle 6, the hinge pillar inner plate 8, and the front floor 9. Simultaneously, it increases the strength of the enclosed cavity reinforcement area formed by the front floor short crossbeam 5, the hinge pillar inner plate 8, the front floor 9, and the floor front longitudinal beam 10. By increasing material strength and adding two cavity structures in the occupant's foot area, the impact force in the later stages of a collision is effectively distributed, protecting the structural integrity of the occupant compartment and thus improving the safety of the occupant's lower limbs during a collision.
[0047] The vehicle in this application embodiment is an electric vehicle, a gasoline vehicle, or a range-extended vehicle. An electric vehicle is a vehicle powered by electrical energy, a gasoline vehicle is a vehicle powered by fossil fuels, and a range-extended vehicle is a vehicle whose kinetic energy is a combination of electrical energy and fossil fuels.
[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A passenger compartment reinforcement structure based on small offset collision safety, characterized in that, The invention pertains to the front compartment of an automobile, which includes two front wheel assemblies symmetrically arranged on the left and right sides. The reinforcing structure is provided at least twice, corresponding to each of the two front wheel assemblies. Each reinforcing structure includes a hinge pillar inner plate, a front floor, a front floor longitudinal beam, and a front floor short crossbeam. The hinge pillar inner plate is vertically positioned and located inside the corresponding front wheel assembly. The front floor is horizontally positioned, with one side connected to the bottom of the inner side of the hinge pillar inner plate. The front floor longitudinal beam is located on the top of the front floor, away from the hinge pillar inner plate, and its two ends extend in the front-rear direction. The front floor short crossbeam is located on the top of the front floor, with its two ends extending in the left-right direction, and its two ends are connected to the hinge pillar inner plate and the front floor longitudinal beam, respectively.
2. The passenger compartment reinforcement structure based on small offset collision safety according to claim 1, characterized in that, Each of the aforementioned reinforcing structures further includes a front baffle and a front floor support beam. The front baffle is vertically arranged and one side of it is connected to the inner side of the hinge column inner plate. The bottom end of the front baffle is connected to the top surface of the front floor. The two ends of the front floor support beam extend in the left-right direction and are disposed on the top surface of the front floor. One side of the front floor support beam is connected to the front baffle, and one end of the front floor support beam is also connected to the inner side of the bottom of the hinge column inner plate.
3. The passenger compartment reinforcement structure based on small offset collision safety according to claim 2, characterized in that, Each of the reinforcing structures also includes a front baffle beam, with both ends of each front baffle beam extending in the left-right direction, and each front baffle mounted on the corresponding front baffle beam.
4. The passenger compartment reinforcement structure based on small offset collision safety according to claim 3, characterized in that, Each reinforcing structure also includes a front longitudinal beam, with both ends of each front longitudinal beam extending in the front-rear direction and connected to the corresponding front baffle beam.
5. The passenger compartment reinforcement structure based on small offset collision safety according to claim 3, characterized in that, Each of the aforementioned front wheel assemblies includes a wheel, a lower front control arm, and a lower rear control arm; each of the aforementioned hinge pillar inner plates is located inside the corresponding wheel; the two ends of the lower front control arm and the lower rear control arm are respectively connected to the corresponding wheel and the front fender crossbeam.
6. The passenger compartment reinforcement structure based on small offset collision safety according to claim 3, characterized in that, Each of the aforementioned front baffle beams is made of hot-formed steel.
7. The passenger compartment reinforcement structure based on small offset collision safety according to claim 2, characterized in that, Each of the reinforcing structures further includes a diagonal brace, each of the diagonal braces being located above the corresponding front baffle and connected to the inner side of the corresponding hinge column inner plate.
8. The passenger compartment reinforcement structure based on small offset collision safety according to claim 7, characterized in that, Each of the front baffles and the diagonal bracing beams is made of ultra-high strength steel.
9. A car, characterized in that, It includes two front wheel assemblies symmetrically arranged on the left and right sides and a passenger compartment reinforcement structure based on small offset collision safety as described in any one of claims 1 to 8; at least one of the reinforcement structures is provided at each of the front wheel assemblies.
10. The automobile according to claim 9, characterized in that, The vehicle in question is an electric vehicle, a gasoline-powered vehicle, or a range-extended vehicle.