Automobile floor beam frame, integrated structure and vehicle
By designing the automobile floor beam frame with reinforcement plates and spot welded connections, the problem of insufficient overall stiffness of the existing automobile floor assembly is solved, the energy absorption effect and overall stiffness during side column collisions are improved, the safety performance of the vehicle is enhanced, and the safety performance of the vehicle is reduced. Battery short circuit and fire risk.
Patent Information
- Application Number
- CN202420287243.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-07
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-02-07
AI Technical Summary
The overall stiffness of the existing automobile floor assembly is insufficient, the side collision energy absorption space is small, and the car body is prone to deformation. Especially when side columns collide, it may cause deformation of the power battery module and internal short circuit, increasing the risk of fire.
A car floor beam frame is designed, including the left front beam and the right front beam along the length of the vehicle body. The first cross beam, the second cross beam and the third cross beam are arranged vertically in sequence, and are reinforced by spot welding connection. The plate enhances structural stiffness. The edge beam reinforcement plate is arranged horizontally between the left front beam, the right front beam and the front longitudinal beam. The left reinforcement plate, the middle reinforcement plate and the second cross beam are bonded and spot welded to enhance the lateral and overall stiffness.
It improves the energy absorption effect and overall stiffness of the vehicle when side columns collide, and the structure is not easy to deform, enhances the lateral rigidity and overall collision energy absorption capacity of the vehicle, and reduces the risk of battery short circuit and fire.
Smart Images
Figure CN222247407U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile design, in particular to an automobile floor beam frame, an integrated structure and a vehicle. Background Art
[0002] With the rapid development of my country's automobile industry and the substantial increase in the number of cars owned, vehicle traffic safety has also become an important public safety issue. During the production and design process of automobiles, their safety performance needs to be tested, such as vehicle collision tests. Common vehicle collision conditions mainly include head-on collision, side collision, rollover, rear-end collision and pedestrian collision, among which side collision can be called side pole collision. Side pole collision simulates the scene of vehicle skidding and hitting objects such as large trees, telephone poles, and signpost poles. Side collision accounts for about 28% and the mortality rate is as high as 34%. The important reason is that the obstacle is extremely rigid, the collision contact area is small, and the collision energy absorption space on the side of the vehicle is small, which can easily cause large local intrusion on the side of the vehicle and large deformation of the body, thereby causing serious injuries to the occupants in the vehicle.
[0003] The existing automobile floor assembly has insufficient overall rigidity, small side collision energy absorption space, and is easily deformed in a collision. In addition, for extended-range and pure electric models, since the power battery module is arranged under the floor, a side column collision may cause the power battery module to deform and the battery diaphragm to be torn, resulting in an internal short circuit, which is also prone to fire due to leakage of flammable electrolytes.
[0004] Therefore, it is urgent to design a vehicle floor beam frame, an integrated structure and a vehicle to solve the above problems. Utility Model Content
[0005] The purpose of the embodiments of the utility model is to provide an automobile floor beam frame, an integrated structure and a vehicle, which solves the problems of insufficient overall rigidity of the existing vehicle floor assembly, small side collision energy absorption space, and easy deformation of the vehicle body during collision.
[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a vehicle floor beam frame, including a left front side beam and a right front side beam arranged along the length direction of the vehicle body, a first cross beam, a second cross beam and a third cross beam are vertically arranged in sequence between the two side beams, and a front longitudinal beam and a rear longitudinal beam connected to each other at the end are arranged between the first cross beam, the second cross beam and the third cross beam, and also includes:
[0007] Side beam reinforcement plates, which are respectively connected between the left front side beam and the front longitudinal beam and between the right front side beam and the front longitudinal beam by spot welding to strengthen the side impact stiffness of the side beam;
[0008] The left reinforcing plate, the middle reinforcing plate and the right reinforcing plate are respectively attached to the left part, the middle part and the right part of the second cross beam to strengthen the overall rigidity of the second cross beam.
[0009] Optionally, the left reinforcing plate is fitted to three surfaces of the second cross beam and connected as a whole by spot welding.
[0010] Optionally, the middle reinforcing plate is fitted with two vertical surfaces of the second cross beam and connected into a whole by spot welding.
[0011] Optionally, the right reinforcing plate is fitted to three sides of the second cross beam and connected as a whole by spot welding.
[0012] Optionally, after the middle reinforcing plate is installed by bonding and spot welding, a hollow space is maintained between the middle reinforcing plate and the second cross beam.
[0013] Optionally, the places where the left front side beam, the right front side beam, the first cross beam, the second cross beam, the third cross beam, the front longitudinal beam and the rear longitudinal beam are connected to each other are fixedly connected by spot welding.
[0014] Optionally, the front longitudinal beam and the rear longitudinal beam are respectively arranged parallel to the left front side beam and the right front side beam.
[0015] Optionally, the automobile floor beam frame also includes a left front sill beam reinforcement plate, which is connected between the left front side beam and the front longitudinal beam and is located beside the side beam reinforcement plate to enhance the side impact rigidity.
[0016] An automobile floor beam frame integrated structure comprises the above-mentioned automobile floor beam frame.
[0017] A vehicle comprises the above-mentioned automobile floor beam frame.
[0018] The utility model application has the following advantages or beneficial effects:
[0019] 1. The side beam reinforcement plate is transversely arranged between the left front side beam, the right front side beam and the front longitudinal beam to enhance the lateral rigidity, enhance the supporting force, have a strong collision energy absorption effect, and the structure is not easy to deform.
[0020] 2. The left reinforcing plate and the right reinforcing plate respectively strengthen the rigidity of both sides of the second beam. After the middle reinforcing plate is installed by bonding and spot welding, it remains hollow between the second beam, thereby strengthening the rigidity of the middle part of the second beam and the overall rigidity of the second beam, and achieving a good overall collision energy absorption effect.
[0021] 3. The places where the left front side beam, the right front side beam, the first cross beam, the second cross beam, the third cross beam, the front longitudinal beam and the rear longitudinal beam are connected to each other are fixed by spot welding, the structure is stable and reliable, the processing technology is simple, and the integrity is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of an existing automobile floor beam frame;
[0023] Figure 2 It is a structural schematic diagram of a second cross beam of an existing automobile floor beam frame;
[0024] Figure 3 A schematic diagram of the structure of a vehicle floor beam frame provided by an embodiment of the utility model;
[0025] Figure 4 A schematic structural diagram of a second crossbeam of a vehicle floor beam frame provided by an embodiment of the utility model;
[0026] Figure 5 A top view of a second cross beam of a vehicle floor beam frame provided by an embodiment of the utility model;
[0027] Figure 6 An AA cross-sectional view of an automobile floor beam frame provided in an embodiment of the utility model;
[0028] Figure 7 A BB cross-sectional view of a vehicle floor beam frame provided by an embodiment of the utility model;
[0029] Figure 8 This is a CC cross-sectional view of an automobile floor beam frame provided in an embodiment of the utility model.
[0030] Among them: 1. Left front side beam; 2. Front longitudinal beam; 3. First cross beam; 4. Right front side beam; 5. Rear longitudinal beam; 6. Second cross beam; 7. Third cross beam; 8. Side beam reinforcement plate; 9. Left front door sill beam reinforcement plate; 10. Left reinforcement plate; 11. Middle reinforcement plate; 12. Right reinforcement plate. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] The side column collision is a car safety test that is familiar to many car consumers. It mainly simulates the degree of protection of the car for the driver and battery pack when the vehicle loses control in daily life and hits the roadside lamp poles and large trees from the side. This test is particularly important for electric vehicles, because the power batteries of electric vehicles are arranged at the bottom of the car body, and the collision point is closer to the battery pack, so the battery is subjected to greater impact and extrusion force, which is equivalent to directly "cutting" the battery pack with a rigid column. It can be said to be the test that best reflects the electrical safety of the vehicle after a collision. The side column collision simulates a traffic accident such as a car skidding out of control and crashing into a tree trunk or a telephone pole. Because it is a column that hits, the impact force on the local area of the vehicle is too large, which is easy to cause large deformation. In severe cases, the vehicle will even be cut in half. The existing car floor assembly has insufficient overall rigidity, small collision energy absorption space on the side, and the body is easily deformed during collision, and the safety of the people on the vehicle cannot be guaranteed.
[0033] The existing automobile floor beam frame structure is as shown in the attached Figure 1 As shown, it includes a left front side beam 1 and a right front side beam 4 arranged along the length direction of the vehicle body, the left front side beam 1 and the right front side beam 4 are arranged parallel to each other, a first cross beam 3, a second cross beam 6 and a third cross beam 7 are arranged vertically between the two side beams in sequence, a front longitudinal beam 2 and a rear longitudinal beam 5 connected to each other at the end are arranged between the three cross beams, the front longitudinal beam 2 and the rear longitudinal beam 5 are respectively perpendicular to the first cross beam 3, the second cross beam 6 and the third cross beam 7, the front longitudinal beam 2 and the rear longitudinal beam 5 are respectively arranged parallel to the left front side beam 1 and the right front side beam 4, when the side column collision test is performed, the left front side beam 1 and the right front side beam 4 are first subjected to the vertical impact force, due to their simple structure and general rigidity, when impacted, the energy absorption effect is poor, the supporting force is poor, and it is easy to deform, and the second cross beam 6 in the middle plays a key role in the supporting force of the left front side beam 1 and the right front side beam 4 (as shown in the attached figure). Figure 1 and attached Figure 2 As shown), the existing second cross beam 6 adopts a single sheet metal structure with average rigidity, which is difficult to support the left front side beam 1 and the right front side beam 4 and is easily deformed, resulting in low vehicle safety performance.
[0034] Therefore, it is urgent to design a vehicle floor beam frame, an integrated structure and a vehicle to solve the above problems.
[0035] As attached Figure 1 -Attached Figure 8As shown, the embodiment of the utility model provides an automobile floor beam frame, an integrated structure and a vehicle, which can solve the problems of insufficient overall rigidity of the existing vehicle floor assembly, small side collision energy absorption space, and easy deformation of the vehicle body collision. The automobile floor beam frame includes a left front side beam 1 and a right front side beam 4 arranged along the length direction of the vehicle body. The left front side beam 1 and the right front side beam 4 are arranged parallel to each other. A first cross beam 3, a second cross beam 6 and a third cross beam 7 are vertically arranged between the two side beams in sequence. A front longitudinal beam 2 and a rear longitudinal beam 5 connected to each other are arranged between the first cross beam 3, the second cross beam 6 and the third cross beam 7. The front longitudinal beam 2 and the rear longitudinal beam 5 are respectively perpendicular to the first cross beam 3, the second cross beam 6 and the third cross beam 7. The front longitudinal beam 2 and the rear longitudinal beam 5 are respectively perpendicular to the first cross beam 3, the second cross beam 6 and the third cross beam 7. The front longitudinal beam 2 and the rear longitudinal beam 5 are respectively arranged parallel to the left front side beam 1 and the right front side beam 4 (as shown in the attached figure). Figure 3 As shown in the figure, the places where the left front side beam 1, the right front side beam 4, the first cross beam 3, the second cross beam 6, the third cross beam 7, the front longitudinal beam 2 and the rear longitudinal beam 5 are connected to each other are fixed by spot welding, the structure is stable and reliable, the processing technology is simple, and the integrity is good.
[0036] Side beam reinforcement plate 8, the side beam reinforcement plate 8 is connected to the left front side beam 1 and the front longitudinal beam 2 and the right front side beam 4 and the front longitudinal beam 2 respectively by spot welding. Two side beam reinforcement plates 8 are provided to strengthen the side impact stiffness of the left front side beam 1 and the right front side beam 4. During the side column collision test, the side beam reinforcement plate 8 is transversely arranged between the left front side beam 1, the right front side beam 4 and the front longitudinal beam 2 to strengthen the lateral stiffness, strengthen the supporting force, have a strong collision energy absorption effect, and the structure is not easy to deform.
[0037] The middle reinforcing plate 11 and the right reinforcing plate 12 are respectively attached to the left, middle and right parts of the second cross beam 6, the left reinforcing plate 10 is attached to three sides of the second cross beam 6, the middle reinforcing plate 11 is attached to two vertical sides of the second cross beam 6, and the right reinforcing plate 12 is attached to three sides of the second cross beam 6 (as shown in the attached figure). Figure 4 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 and attached Figure 8 As shown in the figure, they are all connected as a whole by spot welding, which is easy to process and forms a complete whole. During the side column collision test, the second cross beam 6 is arranged in the middle of the floor beam frame, and the left reinforcing plate 10 and the right reinforcing plate 12 respectively strengthen the rigidity of both sides of the second cross beam 6. After the middle reinforcing plate 11 is fitted and spot welded, it remains hollow between the second cross beam 6, strengthens the rigidity of the middle part of the second cross beam 6, strengthens the overall rigidity of the second cross beam 6, and has a good overall collision energy absorption effect.
[0038] The side column hits the floor beam frame structure and further comprises a left front sill beam reinforcement plate 9, which is connected between the left front side beam 1 and the front longitudinal beam 2 and is located beside the side beam reinforcement plate 8 (as shown in the attached figure). Figure 3As shown), when the side pillar hits, the left front sill beam reinforcement plate 9 and the side beam reinforcement plate 8 are vertically arranged between the side beam and the longitudinal beam to enhance the side collision rigidity.
[0039] In the utility model application, the side beam reinforcement plate 8 is transversely arranged between the left front side beam 1, the right front side beam 4 and the front longitudinal beam 2, so as to strengthen the lateral rigidity, strengthen the supporting force, have a strong collision energy absorption effect, and the structure is not easy to deform. In addition, the left reinforcement plate 10 and the right reinforcement plate 12 respectively strengthen the rigidity of both sides of the second cross beam 6. After the middle reinforcement plate 11 is installed by spot welding, it remains hollow between the second cross beam 6, strengthens the rigidity of the middle part of the second cross beam 6, strengthens the overall rigidity of the second cross beam 6, and has a good overall collision energy absorption effect.
[0040] An automobile floor beam frame integrated structure comprises the above-mentioned automobile floor beam frame.
[0041] The integrated structure of the automobile floor beam frame has strong side impact rigidity and good overall collision energy absorption effect.
[0042] A vehicle comprises the above-mentioned automobile floor beam frame.
[0043] In the side pole impact test, the vehicle has strong rigidity, good support and is not easy to deform.
[0044] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A floor beam frame for an automobile, comprising a left front side beam and a right front side beam arranged along the length direction of the automobile body, a first cross beam, a second cross beam and a third cross beam arranged vertically in sequence between the two side beams, a front longitudinal beam and a rear longitudinal beam connected to each other at the end thereof are arranged between the first cross beam, the second cross beam and the third cross beam, characterized in that: Also includes: Side beam reinforcement plates, which are respectively connected between the left front side beam and the front longitudinal beam and between the right front side beam and the front longitudinal beam by spot welding to strengthen the side impact stiffness of the side beam; The left reinforcing plate, the middle reinforcing plate and the right reinforcing plate are respectively attached to the left part, the middle part and the right part of the second cross beam to strengthen the overall rigidity of the second cross beam.
2. The automobile floor beam frame according to claim 1, characterized in that: The left reinforcing plate is fitted with three surfaces of the second cross beam and connected into a whole by spot welding.
3. The automobile floor beam frame according to claim 2, characterized in that: The middle reinforcing plate is fitted with two vertical surfaces of the second cross beam and connected into a whole through spot welding.
4. The automobile floor beam frame according to claim 3, characterized in that: The right reinforcing plate is fitted on three sides of the second cross beam and connected into a whole by spot welding.
5. The automobile floor beam frame according to claim 4, characterized in that: After the middle reinforcing plate is installed by bonding and spot welding, a hollow space is maintained between the middle reinforcing plate and the second cross beam.
6. The automobile floor beam frame according to claim 1, characterized in that: The places where the left front side beam, the right front side beam, the first cross beam, the second cross beam, the third cross beam, the front longitudinal beam and the rear longitudinal beam are connected to each other are fixedly connected by spot welding.
7. The automobile floor beam frame according to claim 6, characterized in that: The front longitudinal beam and the rear longitudinal beam are respectively arranged in parallel with the left front side beam and the right front side beam.
8. The automobile floor beam frame according to claim 1, characterized in that: The automobile floor beam frame also includes a left front sill beam reinforcement plate, which is connected between the left front side beam and the front longitudinal beam, is located beside the side beam reinforcement plate, and strengthens the side impact rigidity.
9. An integrated structure of automobile floor beams, characterized in that: The invention comprises the automobile floor beam frame as described in any one of claims 1 to 8.
10. A vehicle, characterized in that: The invention comprises the automobile floor beam frame as described in any one of claims 1 to 8.