Vehicle front longitudinal beam frame structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a vehicle front longitudinal beam frame structure and a vehicle, and aims to solve the problems that the front end layout of an existing tiny vehicle type or a vehicle type with a small front overhang distance is compact, sufficient energy absorption of a front end force transmission structure is not facilitated, deformation is controlled to be stable, and secondary braking safety is affected. In order to achieve the purpose, the vehicle front longitudinal beam frame structure comprises a front longitudinal beam which extends in the length direction of a vehicle; the front cabin side edge beam extends in the length direction of the vehicle; a front side frame connecting plate arranged along the width direction of the vehicle; two ends of the front wheel cover are connected with the front longitudinal beam and the front cabin side edge beam; the two ends of the front side frame connecting plate are connected with the front longitudinal beam and the forecabin side edge beam, the forecabin side edge beam extends forwards in the direction of the front end of the vehicle so that the forecabin side front arrangement area can be defined by the forecabin side edge beam, the front side frame connecting plate, the front end of the front longitudinal beam and the front wheel cover together, and the forecabin side front arrangement space of the vehicle is enlarged. And the energy absorption effect of the force transmission structure and the safety performance of the vehicle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and specifically provides a vehicle front longitudinal beam frame structure and a vehicle. Background Art

[0002] As consumers' expectations for automobile crashworthiness and personal safety grow, industry regulations are becoming more and more stringent in terms of vehicle safety, and the performance requirements for vehicle platforms in terms of collision safety are also becoming higher and higher. However, performance improvements are usually accompanied by increased maintenance and insurance costs, which in turn harms the interests of consumers. In particular, the development of micro-cars often presents technical features such as compact layout, small car models and large tires, which limits the room for improvement in collision performance.

[0003] In the design of the traditional front cabin of the vehicle body, the side beam of the front cabin usually adopts an integrated welded structure, which embraces the upper cross beam of the water tank to the front inner side and is welded to the water tank column, or bends and extends forward and downward and is welded to the laterally extended energy absorption box. Both forms limit the front layout space of the front cabin to varying degrees. In addition, due to the bending characteristics of the side beam of the front cabin, it generally corresponds to the "slippage" strategy of small offset collision (that is, the vehicle reduces the direct collision with the barrier by swaying), requiring a large front overhang distance so that there is time for the vehicle to sway, which brings challenges to the initial size definition of vehicle model development. There are also independent headlight frame bolted assembly, but due to the limitation of the headlight shape, it usually only solves the headlight layout and assembly requirements, and has limited contribution to collision damage and maintainability. Therefore, it has become a technical problem to be solved in this field to propose a front longitudinal beam frame structure suitable for micro-cars or cars with a small front overhang distance, which is friendly to the front end layout, conducive to the full energy absorption of the front end force transmission structure, stable control of deformation and secondary braking safety (ensuring that the vehicle will not lose power).

[0004] In view of this, the art needs a new vehicle front longitudinal beam frame structure and a vehicle to solve the existing problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the front end layout of existing micro-cars or cars with small front overhang is compact, which is not conducive to sufficient energy absorption of the front end force transmission structure, stable deformation control and affects the safety of secondary braking.

[0006] In a first aspect, the utility model provides a front longitudinal beam frame structure of a vehicle, the front longitudinal beam frame structure comprising: a front longitudinal beam extending along the length direction of the vehicle; a front cabin side beam extending along the length direction of the vehicle; a front side frame connecting plate arranged along the width direction of the vehicle; a front wheel cover, one end of the front wheel cover being connected to the front longitudinal beam, and the other end being connected to the front cabin side beam; one end of the front side frame connecting plate being connected to the front longitudinal beam, and the other end being connected to the front cabin side beam, the front cabin side beam extending forward toward the front end of the vehicle so as to enclose a front cabin side front layout area together with the front side frame connecting plate, the front end of the front longitudinal beam and the front wheel cover, so as to increase the front cabin side front layout space of the vehicle.

[0007] In a specific embodiment of the front longitudinal beam frame structure of the above vehicle, a radiator column is provided on the front longitudinal beam, and the front side frame connecting plate is detachably connected to the front cabin side beam and the radiator column by screwing.

[0008] In a specific implementation of the above-mentioned vehicle front longitudinal beam frame structure, the front cabin side beams and / or the water tank pillars are configured as closed cavity structures.

[0009] In a specific embodiment of the front longitudinal beam frame structure of the vehicle, the front frame connecting plate is in the shape of a straight plate, and a reinforcing rib is arranged on the front frame connecting plate, and the reinforcing rib is arranged to protrude in the length direction of the vehicle.

[0010] In a specific embodiment of the front longitudinal beam frame structure of the vehicle, the front side frame connecting plate is in the form of a straight plate, and a first flange is provided on the front side frame connecting plate, and the first flange faces the length direction of the vehicle.

[0011] In a specific embodiment of the front longitudinal beam frame structure of the above-mentioned vehicle, second flanges are provided at the mounting surfaces of the two ends of the front side frame connecting plate and the radiator column and the front cabin side beam, and mounting holes are provided on the second flanges. Screw points for mounting the front side frame connecting plate are provided on the outer side of the radiator column and the inner side of the front cabin side beam; the front side frame connecting plate can be inserted into the horizontal space enclosed by the radiator column and the front cabin side beam, and the connection with the radiator column and the front cabin side beam is achieved through the second flanges at its two ends.

[0012] In a specific embodiment of the front longitudinal beam frame structure of the vehicle, a lateral box-type structure is provided at the front end of the front longitudinal beam.

[0013] In a specific embodiment of the above-mentioned vehicle front longitudinal beam frame structure, the left and right parts of the front frame connecting plate are respectively provided with mounting points or brackets for mounting functional parts such as headlights, fuse boxes or expansion kettles, and fixing points for fastening wiring harnesses.

[0014] In a specific implementation of the above vehicle front longitudinal beam frame structure, the direction of the bracket for mounting the fuse box is adjustable to achieve displacement guidance of the fuse box.

[0015] The utility model also provides a vehicle, the vehicle comprising the vehicle front longitudinal beam frame structure described in any one of the above technical solutions.

[0016] Under the condition of adopting the above technical scheme, the utility model sets the front cabin side beam to extend toward the front end of the vehicle along the length direction of the vehicle, and sets the front side frame connecting plate connected with the front longitudinal beam of the vehicle and the front cabin side beam to extend along the width direction of the vehicle. Compared with the form of embracing the front cabin side beam to the front inner side and bending forward and downward in the prior art, the area enclosed by the front cabin side beam and the front longitudinal beam in the prior art has a relatively sharp and narrow shape near the front end of the vehicle, while the front cabin side front arrangement area enclosed by the front end of the front cabin side beam, the front end of the front longitudinal beam, the front side frame connecting plate and the front wheel cover of the utility model has a sharp and narrow shape near the front end of the vehicle. The area at the end is approximately square in shape, which makes the front layout space on the front cabin side of the vehicle larger. While ensuring that the front cabin side beams absorb more fully, it can also control the deformation trend of the front cabin side beams, achieve crush consistency with the front longitudinal beams, improve the damage and maintainability of low-speed collisions, and ensure the deformation stability and sufficient energy absorption of the force transmission structure. In addition, when the front end of the vehicle encounters a small offset collision, the larger front layout space on the front cabin side can also ensure that the fuse box is not functionally damaged, thereby solving the problem that the existing micro-car models or models with a small front overhang distance have a compact front layout, which is not conducive to the full energy absorption of the front end force transmission structure, controlling deformation stability and affecting the secondary braking safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a form of existing vehicle front longitudinal beam frame structure;

[0019] Figure 2 It is another form of the existing vehicle front longitudinal beam frame structure;

[0020] Figure 3 It is an axial view of the vehicle front longitudinal beam frame structure of the utility model;

[0021] Figure 4 It is the axial view and side view of the front side frame connecting plate after being assembled with the front cabin side beam and water tank column;

[0022] Figure 5It is a top view of the front longitudinal beam frame structure of the vehicle of the present invention, wherein the direction of the arrow is the form direction of the vehicle (i.e., the length direction of the vehicle);

[0023] Figure 6 These are the front and side views of the front side frame connecting plate.

[0024] List of reference numerals:

[0025] 1-vehicle front longitudinal beam frame structure; 11-front longitudinal beam; 12-front cabin side beam; 13-front side frame connecting plate; 131-reinforcement rib; 132-first flange; 133-second flange; 134-bolt; 14-water tank column; 15-front wheel cover; 16-front cabin side front layout area; 17-lateral box-type structure. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0027] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] First, the existing vehicle front longitudinal beam frame structure 1 is described. Figure 1 , Figure 2As shown, in the traditional front cabin design, the front cabin side beam 12 usually adopts an integrated welded structure, embraces the upper cross beam of the water tank to the front inner side, and is welded to the water tank column 14, or bends and extends forward and downward, and is welded to the laterally extended energy absorption box. Both forms restrict the front end layout space to varying degrees, and due to the bending characteristics of the front cabin side beam 12, it generally corresponds to a small bias "slip" strategy (that is, the vehicle reduces direct collision with the barrier by swaying), requiring a large front overhang distance so that there is time for the vehicle to sway, and micro-car models often present technical characteristics such as compact layout and small car models with large tires, so this brings challenges to the initial size definition of micro-car models. There are also independent headlight frame bolted assembly, but limited by the shape of the headlight, it usually only solves the headlight layout and assembly requirements, and has limited contribution to collision damage and maintainability. Therefore, it becomes a technical problem to be solved urgently in this field to propose a front longitudinal beam frame structure 1 which is suitable for micro-cars or cars with a small front overhang, is friendly to the front-end layout, is conducive to the full energy absorption of the front-end force transmission structure, controls deformation stability and secondary braking safety, and the following implementation methods are proposed based on this.

[0030] like Figure 3-Figure 6 As shown, in order to solve the problem that the front end layout of existing micro-cars or cars with small front overhang is compact, which is not conducive to the sufficient energy absorption of the front force transmission structure, the stable control of deformation and the safety of secondary braking, the front longitudinal beam frame structure 1 of the vehicle of the utility model comprises: a front longitudinal beam 11, which extends along the length direction of the vehicle, and a water tank column 14 is arranged on the front longitudinal beam 11; a front cabin side beam 12, which is in the shape of a straight plate and extends along the length direction of the vehicle; a front side frame connecting plate 13, which is arranged along the width direction of the vehicle; one end of the front side frame connecting plate 13 is connected to the front side frame 13; The water tank column 14 on the front longitudinal beam 11 is detachably connected by bolting 134, and the other end is detachably connected to the front cabin side beam 12 by bolting. The front longitudinal beam frame structure 1 also includes a front wheel cover 15, one end of which is connected to the front longitudinal beam 11, and the other end is connected to the front cabin side beam 12. The front cabin side beam 12 extends forward in the direction of the front end of the vehicle so that the front side frame connecting plate 13 and the front end of the front longitudinal beam 11, the front end of the front cabin side beam 12 and the front wheel cover 15 together enclose a front cabin side front layout area 16 to increase the front cabin layout space of the vehicle. The left and right parts of the front side frame connecting plate 13 are also respectively provided with mounting points or brackets for mounting functional parts such as vehicle headlights, fuse boxes or expansion kettles, and fixing points for fixing wiring harnesses (not shown in the figure).

[0031] When the above-mentioned embodiment is adopted, during the installation of the front longitudinal beam frame structure 1 of the utility model, the front side frame connecting plate 13 is first installed on the front cabin side beam 12 and the water tank column 14 by screwing or other common detachable methods, so that the front longitudinal beam 11, the front side frame connecting plate 13, the front cabin side beam 12 and the front wheel cover 15 together form a front cabin side front layout area 16, and then the vehicle's headlights, fuse box or expansion kettle and wiring harness can be arranged in the front cabin side front layout area 16. Since the front side frame connecting plate 13 is provided with mounting points, brackets and fixing points, the vehicle's headlights, fuse box or expansion kettle can be installed on the front side frame connecting plate 13 through the mounting points, and the wiring harness can be installed on the front side frame connecting plate 13 through the bracket. When the front end of the vehicle is hit, the impact force will be transmitted from the radiator column 14 and the front longitudinal beam 11 to the front cabin side beam 12 through the front side frame connecting plate 13, and then transmitted rearward to the A-pillar structure of the vehicle through the front longitudinal beam 11 and the front cabin side beam 12.

[0032] The advantage of the above-mentioned arrangement is that the utility model sets the front cabin side beam 12 to extend along the length direction of the vehicle toward the front end of the vehicle, and sets the front side frame connecting plate 13 connected to the front longitudinal beam 11 and the front cabin side beam 12 of the vehicle along the width direction of the vehicle. Compared with the form of embracing the front cabin side beam 12 to the front inner side and bending forward and downward in the prior art, the area surrounded by the front cabin side beam 12 and the front longitudinal beam 11 in the prior art is sharp and narrow near the front end of the vehicle, while the front cabin side front arrangement area 16 of the utility model, which is jointly surrounded by the front end of the front cabin side beam 12, the front end of the front longitudinal beam 11, the front side frame connecting plate 13 and the front wheel cover 15, is approximately square in shape near the front end of the vehicle, so that the step difference L between the front cabin side beam 12 and the water tank column 14 along the length direction of the vehicle is reduced, thereby making the front cabin arrangement space of the vehicle larger, thereby solving the problem that the front end layout of the existing micro-type or small front overhang distance vehicle is compact, which is not conducive to the full energy absorption of the front end force transmission structure, the control of deformation stability and the impact on the secondary braking safety. In addition, by setting the front side frame connecting plate 13 and the front cabin side beam 12 and the water tank column 14 in a detachable form, rapid disassembly and replacement can be achieved under the condition of avoiding welding process, which greatly improves the convenience of repairing the front end of the vehicle body damaged by collision, especially low-speed collision, and protects the interests of users during use. In addition, by the front cabin side beam 12 extending forward in a full straight line with a specified inclination angle and connecting with the front side frame connecting plate 13, it can ensure that the front cabin side beam 12 absorbs energy more fully, and the deformation trend of the front cabin side beam 12 is controlled, so as to achieve the collapse consistency with the front longitudinal beam 11, improve the intrusion amount of the front wall and A-pillar, and improve the safety factor of the driver and passengers. In addition, through the structure of the water tank column 14, the connection point height of the front side frame connecting plate 13 can be adjusted as needed, or the water tank column 14 can be cancelled under extreme conditions, so that the front longitudinal beam 11 directly provides the installation of the front side frame connecting plate 13, and these changes are all within the protection scope of the present utility model.

[0033] The main embodiments of the present invention have been introduced above, and some preferred embodiments of the present invention will be introduced next.

[0034] like Figure 3 As shown, in a possible implementation, the front cabin side beam 12 and / or the water tank pillar 14 are configured as a closed cavity structure.

[0035] The advantage of the above-mentioned setting method is that the front cabin side beam 12 and the radiator column 14 are set as a closed cavity structure, so that while transmitting force, the closed cavity structure can more effectively absorb the impact energy. At the same time, this cavity channel can also make the front cabin side beam 12 and the radiator column 14 lightweight, thereby reducing the weight of the vehicle front longitudinal beam frame structure 1.

[0036] like Figure 6 As shown, in a possible embodiment, a reinforcing rib 131 is provided on the front side frame connecting plate 13, and the reinforcing rib 131 is protruded in the length direction of the vehicle. At the same time, a first flange 132 is also provided on the front side frame connecting plate 13, and the first flange 132 is folded in the length direction of the vehicle. In addition, the direction of the bracket for installing the fuse box can be adjusted to achieve displacement guidance of the fuse box.

[0037] The advantage of the above embodiment is that: as can be seen from the above, the front side frame connecting plate 13 plays an important role in transmitting the impact force when the front end of the vehicle is hit. Therefore, in this embodiment, by providing a reinforcing rib 131 protruding in the length direction of the vehicle and a flange on the front side frame connecting plate 13, the resistance strength of the front side frame connecting plate 13 when it is hit is enhanced, thereby further ensuring the structural strength of the front longitudinal beam frame structure 1. When the vehicle is involved in a low-speed collision, the front frame connecting plate 13 can hinder the backward intrusion of the headlights, effectively protecting the fuse box, high-voltage wiring harness, etc. arranged in this area from functional damage; and in the event of a head-on collision at a high speed, the front frame connecting plate 13 can be moved forward to resist the crushing of the headlights and delay the intrusion of the headlights. At the same time, the direction of the bracket for installing the fuse box is adjustable. For example, the direction of the bracket can be set to be obliquely backward and the fuse box can be installed on the bracket along the oblique backward direction. When the fuse box is squeezed, it can be ensured that the fuse box has a certain oblique backward movement space to alleviate the impact force caused by the squeezing. Therefore, the front frame connecting plate 13 combined with the displacement guide design of the fuse box arranged in this area protects the fuse box body from functional damage, thereby avoiding the loss of secondary braking function caused by failure of the fuse box, thereby ensuring braking safety. In addition, regarding secondary braking safety, those skilled in the art can understand that, in a low-speed collision, the front frame connecting plate 13 protects against the rearward movement of the vehicle headlights, thereby protecting the fuse box from structural damage. In a high-speed collision, the front frame connecting plate 13 plays a certain degree of protection. Combined with the displacement guiding effect of the bracket on the fuse box, it can protect the fuse box from functional damage (i.e., there will be no power outage), thereby ensuring that secondary braking is effective after a collision occurs.

[0038] like Figure 4 , Figure 6As shown, in a possible embodiment, second flanges 133 are provided at both ends of the front side frame connecting plate 13 at the mounting surfaces of the water tank column 14 and the front cabin side beam 12, and screw connection points for installing the front side frame connecting plate 13 are provided on the outer side of the water tank column 14 and the inner side of the front cabin side beam 12. The front side frame connecting plate 13 can be inserted into the horizontal space surrounded by the water tank column 14 and the front cabin side beam 12, and mounting holes are provided on the second flanges 133. The installation connection of the front side frame connecting plate 13 on the water tank column 14 and the front cabin side beam 12 is realized through the second flanges 133 at both ends of the front side frame connecting plate 13.

[0039] When the above-mentioned embodiment is adopted, in the process of installing the front side frame connecting plate 13 to the water tank column 14 and the front cabin side beam 12, the front side frame connecting plate 13 is first inserted into the horizontal space surrounded by the water tank column 14 and the front cabin side beam 12, and the mounting holes on the second flange 133 are matched with the screw connection points on the water tank column 14 and the front cabin side beam 12, and then the front side frame connecting plate 13 can be installed and connected on the water tank column 14 and the front cabin side beam 12 by screw connection, thereby realizing rapid disassembly and replacement under the condition of avoiding welding process.

[0040] like Figure 5 As shown, in a possible implementation manner, a lateral box-type structure 17 is provided at the front end of the front longitudinal beam 11, and the front longitudinal beam 11 and the lateral box-type structure 17 are connected to a front anti-collision beam (not shown in the figure).

[0041] The advantage of the above embodiment is that by providing a lateral box-type structure 17 at the front end of the front longitudinal beam 11, the force points during a small offset collision of the vehicle are increased. When the front end of the vehicle is subjected to a small offset collision, part of the load will be transferred to the front longitudinal beam 11 along the lateral box-type structure 17, so that the impact force can be transferred to the front longitudinal beam 11, thereby ultimately improving the intrusion amount of the A-pillar and the front surround.

[0042] It should be noted that the above-mentioned implementation mode is only used to illustrate the principle of the utility model, and is not intended to limit the protection scope of the utility model. Without departing from the principle of the utility model, those skilled in the art can adjust the above-mentioned structure so that the utility model can be applied to more specific application scenarios.

[0043] In addition, the utility model also provides a vehicle, which has the vehicle front longitudinal beam frame structure 1 in any of the above embodiments.

[0044] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A vehicle front longitudinal beam frame structure, characterized in that: The front longitudinal beam frame structure comprises: a front longitudinal beam extending along the length direction of the vehicle; A front cabin side beam extending along the length direction of the vehicle; A front side frame connecting plate, arranged along the width direction of the vehicle; A front wheel cover, one end of which is connected to the front longitudinal beam, and the other end of which is connected to the front cabin side beam; One end of the front side frame connecting plate is connected to the front longitudinal beam, and the other end is connected to the front cabin side beam. The front cabin side beam extends forward toward the front end of the vehicle so as to enclose a front cabin front layout area together with the front side frame connecting plate, the front longitudinal beam and the front wheel cover to increase the front cabin front layout space of the vehicle.

2. The vehicle front longitudinal beam frame structure according to claim 1, characterized in that: The front longitudinal beam is provided with a water tank column, and the front side frame connecting plate is detachably connected to the front cabin side beam and the water tank column by means of screw connection.

3. The vehicle front longitudinal beam frame structure according to claim 2, characterized in that: The front cabin side beam and / or the water tank column are configured as a closed cavity structure.

4. The vehicle front longitudinal beam frame structure according to claim 1, characterized in that: The front side frame connecting plate is in the shape of a straight plate, and a reinforcing rib is arranged on the front side frame connecting plate, and the reinforcing rib is arranged to protrude in the length direction of the vehicle.

5. The vehicle front longitudinal beam frame structure according to claim 1, characterized in that: The front side frame connecting plate is in the form of a straight plate, and a first flange is arranged on the front side frame connecting plate, and the first flange faces the length direction of the vehicle.

6. The vehicle front longitudinal beam frame structure according to claim 2, characterized in that: Second flanges are provided at both ends of the front side frame connecting plate and the mounting surfaces of the water tank column and the front cabin side beam, and mounting holes are provided on the second flanges. Screw connection points for mounting the front side frame connecting plate are provided on the outer side of the water tank column and the inner side of the front cabin side beam; the front side frame connecting plate can be inserted into the horizontal space surrounded by the water tank column and the front cabin side beam, and the connection with the water tank column and the front cabin side beam is achieved through the second flanges at both ends thereof.

7. The vehicle front longitudinal beam frame structure according to claim 1, characterized in that: The front end of the front longitudinal beam is provided with a lateral box-type structure.

8. The vehicle front longitudinal beam frame structure according to claim 1, characterized in that: The left and right parts of the front frame connecting plate are respectively provided with mounting points or brackets for mounting headlights, fuse boxes or expansion kettles, and fixing points for fastening wiring harnesses.

9. The vehicle front longitudinal beam frame structure according to claim 8, characterized in that: The direction of the bracket for mounting the fuse box is adjustable to achieve displacement guidance of the fuse box.

10. A vehicle, characterized in that: The vehicle comprises the vehicle front longitudinal beam frame structure according to any one of claims 1-9.

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